CN202372319U - Gas sealing experimental device - Google Patents
Gas sealing experimental device Download PDFInfo
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- CN202372319U CN202372319U CN2011203841890U CN201120384189U CN202372319U CN 202372319 U CN202372319 U CN 202372319U CN 2011203841890 U CN2011203841890 U CN 2011203841890U CN 201120384189 U CN201120384189 U CN 201120384189U CN 202372319 U CN202372319 U CN 202372319U
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- 238000007789 sealing Methods 0.000 title claims abstract description 63
- 238000002474 experimental method Methods 0.000 claims abstract description 65
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 125000006850 spacer group Chemical group 0.000 claims description 44
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 58
- 238000000034 method Methods 0.000 abstract description 19
- 238000005259 measurement Methods 0.000 abstract description 18
- 239000000463 material Substances 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses an gas sealing experimental device, which includes a seal chamber, a drive system, a gas supply loop and a test system, and is characterized in that the seal chamber is vertically fixed on a bracket through screws; the drive system includes a motor, a coupler, a bearing box and a rotating shaft, wherein the motor is fixed on the bracket through screws and connected with the rotating shaft through the coupler, and the bearing box is arranged on the coupler through the rotating shaft; the gas supply loop includes a compressor, a pneumatic tube and a pressure regulating valve; and the test system includes an eddy current transducer, a moving ring locating piece, a flow meter and a pressure transducer. The gas sealing experimental device can be used for online measuring the end face gas leakage rate and gas film thickness of the end face seal of various gases; the method for measuring the gas leakage rate is simple and easy to operate and has good dynamic response; the measurement of the gas film thickness is free from influences by the material quality and end face width of the seal ring as well as the slope grade of the seal ring surface; and the rotating speed and the pressure can be adjusted during the experiment process.
Description
Technical field
The utility model relates to gas end surface mechanical sealing experimental technique field, is specifically related to be used to detect the end face released gas rate of all kinds of gas face seals and the sealing experiment device of air-film thickness.
Background technology
Mechanical seal is the main means that prevent that the rotary type fluid machine axle head from leaking; Wherein dry gas face seals is owing to have that low in energy consumption, mission life is long, leakage rate is little even outstanding advantage such as zero leakage; Application in industries such as petrochemical industry, rock gases is more and more wider; Be the preferred forms of rotary type fluid machine shaft end seals such as large-scale compressor and special media pump, on agitated reactor, use also more and more widely.
Widespread use along with dry gas seals; Form unified dry gas seals optimal design criterion and just seem particularly important; But up to the present still there is not open source literature to systematically discuss the unified design theory and the method for dry gas seals; This has not only formed the blind area of dry gas seals design theory, and is unfavorable for the exploitation of dry gas seals new product, has hindered the development and the application of dry gas seals to a certain extent.Under the incomplete situation of design theory, performance study and the product development of carrying out dry gas seals through the method for experiment are highly effective approach, and the optimization of this checking to theoretical study results, hermetically-sealed construction and the lab scale of product are significant.
Slip and end face air-film thickness are two important parameters of reflection dry gas sealing property.The measurement of dry gas seals slip at present is that the stationary ring side that is employed in the experiment sealing increases the method that cavity is used to collect gas leakage and then measurement gas flow basically; When using this measuring method measurement gas slip; Gas will be full of the cavity of collecting gas leakage earlier; Flowmeter just can measure then, and the measurement to leakage rate just has the regular hour to postpone like this, the measurement of slip unloading phase of the influence sealing.
Current vortex sensor owing to highly sensitive, can realize that non-electricity touches the measurement that advantages such as measurement are widely used in air-film thickness in the air seal experimental provision.Because the effective object of current vortex sensor must be a metallic conductor; This just big limitations the measurement of nonmetallic materials seal face air-film thickness; The area of measured surface should be greater than 1.83 times of current vortex sensor diameter simultaneously, and its use also is restricted when sealing ring is narrower.The installation method of at present common current vortex sensor is on stationary ring, to punch; Current vortex sensor is contained in the hole; Influence the end face duty if get through Kong Zehui, if the blind hole of beating then seal ring material between current vortex sensor and rotating ring end face will shadow influence the sensitivity of sensor greatly.In addition because there is certain circumferential waviness in sealing surface; This installation method can make the result of measurement include circumferential waviness; The end face air-film thickness is that micron order and surfaceness are the same order of magnitude, and morphology is greater than roughness, so measurement result exists than mistake.
Summary of the invention
For overcoming the above-mentioned deficiency of the measuring equipment that has hermetic seal slip and air-film thickness now; Reduce because the improper economic loss that causes of design, but the utility model provides that the measuring method of end face released gas rate and air-film thickness, released gas rate of all kinds of gas face seals of a kind of on-line measurement is simple, dynamic response good, the measurement of air-film thickness does not receive the sealing ring material, the air seal experimental provision of the influence of end face width and sealing ring ground roll degree.
The technical scheme that the utility model adopted is:
A kind of air seal experimental provision; Comprise annular seal space, drive system, air feed loop and test macro; It is characterized in that: said annular seal space vertically is fixed on the support through screw, and said annular seal space comprises experiment sealing that is positioned at annular seal space top and the auxiliary seal that is positioned at the annular seal space bottom, and experiment sealing rotating ring and auxiliary seal rotating ring are installed on the rotating seat; Rotating seat is fixed on the axle sleeve through holding screw; Said experiment stationary seal ring links to each other with end cap through pin, and end cap links together through screw and annular seal space, and said auxiliary seal stationary ring links to each other with annular seal space through pin; Said annular seal space is provided with air intake opening and gas outlet, on the said annular seal space protective cover is installed; Said drive system comprises motor, shaft coupling, bearing housing, rotating shaft, and on support, said motor links to each other through described shaft coupling with said rotating shaft said motor through screw retention, and said bearing housing is arranged on the shaft coupling top through rotating shaft; Said air feed loop comprises compressor, pneumatic tube, pressure regulator valve, and said compressor links to each other with the air intake opening of annular seal space through pneumatic tube, and said pneumatic tube is provided with said pressure regulator valve; Described test macro comprises current vortex sensor, rotating ring spacer, flowmeter and pressure transducer; Said current vortex sensor and flowmeter all are installed on the said experiment stationary seal ring; Said rotating ring spacer is installed on the experiment sealing rotating ring, and said pressure transducer links to each other with said annular seal space.
Further, the described test macro of the utility model also comprises computing machine, and said computing machine links to each other with motor in the said drive system.
On the stationary seal ring of the said experiment sealing of the utility model stationary ring spacer and following stationary ring spacer are housed; The said stationary ring spacer of going up links to each other through screw with following stationary ring spacer; Be fixed together with the experiment stationary seal ring, the said stationary ring spacer of going up is provided with pneumatic joint, and an end of said pneumatic tube is connected on the pneumatic joint; The other end links to each other with flowmeter, and said rotating ring spacer and said experiment sealing rotating ring stick together through bonding agent.
There is protruding weir, location in the said rotating ring spacer of the utility model outside, locatees and circumferentially is evenly distributed with a plurality of damping holes on the protruding weir, and said damping hole is a through hole.
A kind of measuring method of air seal experimental provision is characterized in that: said method is carried out according to following steps:
(1) film thickness measuring method: the initial position of adjusting current vortex sensor before the experiment earlier; Experiment sealing rotating ring leaves experiment stationary seal ring certain distance in the experimentation; This moment, current vortex sensor can record the location variation of rotating ring spacer, tested stationary seal ring so and tested the location variation that the air-film thickness that seals between the rotating ring is the rotating ring spacer;
(2) slip measuring method: when the experiment stationary seal ring is separated with experiment sealing rotating ring; Sealing medium gas is leaked to inner radius by outer radius along the slit between experiment stationary seal ring and the experiment sealing rotating ring; Because there is the sealing of O RunddichtringO in the gap between last stationary ring spacer and the experiment stationary seal ring; So the gas that leaks only leaks along pneumatic joint and pneumatic tube; Pneumatic tube links to each other with flowmeter again, and the gas flow that records of flowmeter is the end face released gas rate between experiment stationary seal ring and the experiment sealing rotating ring so.
Further, the described auxiliary seal stationary ring of the utility model is the butt-end packing that a kind of hole slot combines.
The described auxiliary seal stationary ring of the utility model outer radius is processed with wicker leaf shape micropore endless belt, and inner radius is processed with helicla flute-circular hole endless belt.
All through being transferred to computing machine after data acquisition and the conversion, gaseous tension numerical value all can show the signal that the described current vortex sensor of the utility model, flowmeter, pressure transducer record on computers in air-film thickness, end face released gas rate and the annular seal space.
The principle of work of the utility model is: annular seal space, bearing housing and motor pass through screw retention on support; Motor drives the rotating shaft rotation through shaft coupling; Rotating speed of motor can be passed through computer regulated or manual adjustments, and rotating shaft leans on a pair of taper roll bearing in the bearing housing to support.Two cover sealings are housed in the annular seal space: a cover is the auxiliary seal that is positioned at the annular seal space bottom, is mainly used in the gas that prevents in the annular seal space and leaks; Another set of is the experiment sealing, except that being used for sealing gas, also as the test specimen of testing, the sealing property parameter that seal face air-film thickness of measuring in the experiment and released gas rate are sealing.Compressor provides the gas of certain pressure in annular seal space through the air intake opening of annular seal space; Gaseous tension is through the control of the pressure regulator valve on the manual adjustments pneumatic circuit; A pressure transducer also is housed on the annular seal space, and the gaseous tension in the annular seal space can show on computers in real time.During experiment; The rotating ring that rotating seat can drive experiment sealing and auxiliary seal rotates with rotating shaft; Between end face gas film pressure effect lower seal rotating ring end face and stationary ring end face, can separate certain distance; This distance is the air-film thickness between seal face; Air-film thickness between experiment sealing rotating ring and stationary ring can be recorded by the current vortex sensor that is fixed on the stationary ring spacer, and the effective object of current vortex sensor is the rotating ring spacer that sticks on the experiment sealing rotating ring, through the air-film thickness between the location variation reflection experiment seal face of rotating ring spacer.The gas that leaks through the experiment seal face flows into pneumatic tube through the pneumatic joint that is installed on the stationary ring spacer, and pneumatic tube links to each other with flowmeter, and the flow that records is the end face released gas rate.The data that current vortex sensor and flowmeter record can show through conversion on computers in real time.
There is protruding weir, location in the said rotating ring spacer of the utility model outside, locatees to be center, the center of circle on the protruding weir and to be evenly distributed with a plurality of damping holes, and damping hole is a through hole.Locate the location of protruding weir when being used to locate the rotating ring spacer and being bonded on the experiment sealing rotating ring.In the experiment measuring process; Because the sealing function of rotating ring O type circle forms a seal air cavity between rotating ring spacer and the axle sleeve, intracavity gas can only flow through the damping through hole on the rotating ring spacer; Thereby constitute a damping shock absorption device; Weaken the axial vibration of testing the sealing rotating ring when axle sleeve rotates, keep the stability of air-film thickness between experiment sealing rotating ring and stationary ring, the stably measured of realization blanket gas film thickness.
Auxiliary seal is wear-resistant, the zero leakage mechanical end face seal that a kind of hole slot combines in the utility model; Stationary ring end face outer radius is processed with " wicker leaf shape " micropore endless belt; " wicker leaf shape " micropore group comprise radially air supply trough and the air supply trough left and right sides distribute directional microporous, micropore has three row at least on radial direction; Inner radius is processed with " helicla flute-circular hole " endless belt, is distributed with the circular micropore of some on the sealing weir between the helicla flute.No matter turning axle is rotated in the forward or retrograde rotation; " wicker leaf shape " micropore endless belt can make the fluid film that forms continous-stable between the dynamic and static ring sealing end face; And the load-bearing capacity of fluid film and rigidity are bigger, and when the two-way rotation of experiment sealing needs, auxiliary seal also can meet the demands like this.Inner radius helicla flute vergence direction is opposite with outer radius micropore vergence direction; Not only can increase dynamic pressure effect; And the realization downstream fluid is along the pumping upstream of helicla flute vergence direction; Realize zero leakage, so just can prevent that the auxiliary seal slip is excessive in the experimentation to cause the decline of annular seal space internal pressure or do not reach predetermined pressure.End face is boundary lubrication or mixed lubrication unloading phase of simultaneously owing to air seal; Seal face is prone to produce abrasive particle; And the circular micropore on the inclination micropore of outer radius and the inner radius spiral groove seal weir can receive particulate between end face further to improve the wearing quality of seal face; Make that start and stop are effective, wear-resistant under the sealing low pressure condition, can satisfy the demand of sealing experiment platform frequent starting.
Because gas leakage directly gets into the pneumatic tube that links to each other with flowmeter in the utility model, has saved the cavity that is used to collect gas leakage, the measurement of slip is shorter time delay, and dynamic response is better.The effective object of current vortex sensor is a metal rotating ring spacer, and so no matter whether the sealing ring material is metal, all can be recorded the air-film thickness of seal face by current vortex sensor; Simultaneously; In rotary course, the surface characteristics at rotating ring end face each point place is not quite similar to the influence of film thickness measuring, has the influence that the sealing ring end face centre of gyration does not receive morphology only; The measurement result at this some place can be represented the end face average film thickness; Active position by current vortex sensor in the utility model is the center of rotating ring spacer, the rotation center of rotating ring just, and the measurement result of thickness can not receive the influence of sealing surface waviness so.
The beneficial effect of the utility model is:
1. but the end face released gas rate and the air-film thickness of all kinds of gas face seals of on-line measurement;
2. pressure and rotating speed adjustable can be measured the sealing property of the gas face seals under different sealing pressure and the rotating speed;
3. the measuring method of released gas rate is simple, dynamic response good;
4. the measurement of air-film thickness does not receive the influence of sealing ring material, end face width and sealing ring ground roll degree, and is applied widely, measuring accuracy is high.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model air seal experimental provision.
Fig. 2 is the measuring principle figure of the utility model air seal experimental provision.
Fig. 3 is the rotating ring spacer structural representation of the utility model air seal experimental provision.
Fig. 4 is the auxiliary seal stationary ring end face structure synoptic diagram of the utility model air seal experimental provision.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; The air seal experimental provision of the utility model; Comprise annular seal space 11, drive system, air feed loop and test macro, characteristics are that said annular seal space 11 vertically is fixed on the support 12 through screw, and said annular seal space 11 comprises experiment sealing that is positioned at annular seal space top and the auxiliary seal that is positioned at the annular seal space bottom; Experiment sealing rotating ring 6 is installed on the rotating seat 8 with auxiliary seal rotating ring 9; Rotating seat 8 is fixed on the axle sleeve 7 through holding screw, between experiment sealing rotating ring 6 and the axle sleeve 7 O RunddichtringO 32 is installed, and experiment stationary seal ring 5 links to each other with end cap 3 through pinning; End cap 3 links together through screw and annular seal space 11; Said auxiliary seal stationary ring 10 links together through pin and annular seal space 11, and air intake opening 23 and gas outlet 4 are arranged on the said annular seal space 11, on the said annular seal space 11 protective cover 2 is installed; Said drive system comprises motor 16, shaft coupling 15, bearing housing 13, rotating shaft 14; Said motor 16 passes through screw retention on support 12; Said motor 16 links to each other through described shaft coupling 15 with said rotating shaft 14, and said bearing housing 13 is arranged on shaft coupling 15 tops through rotating shaft 14; Said air feed loop comprises compressor 19, pneumatic tube 17, pressure regulator valve 18,22, and said compressor 19 links to each other with the air intake opening 23 of annular seal space 11 through pneumatic tube 17, and said pneumatic tube 17 is provided with said pressure regulator valve 18,22; Described test macro comprises current vortex sensor 25, flowmeter 1 and pressure transducer 21, and said current vortex sensor 25 all is installed on the said experiment stationary seal ring 5 with flowmeter 1, and said pressure transducer 21 links to each other with said annular seal space 11.
Further, the described test macro of the utility model also comprises computing machine 20, and said computing machine 20 links to each other with motor 16 in the said drive system.
Further, there is the protruding weir 31a in location in the said rotating ring spacer of the utility model 31 outsides, locate and circumferentially are evenly distributed with a plurality of damping hole 31b on the protruding weir, and damping hole 31b is a through hole.
A kind of measuring method of air seal experimental provision, characteristics are that said method is carried out according to following steps:
(1) film thickness measuring method: the initial position of adjusting current vortex sensor 26 before the experiment earlier; Experiment sealing rotating ring 6 leaves experiment stationary seal ring 5 certain distances in the experimentation; Because rotating ring spacer 31 is adhesively fixed with experiment sealing rotating ring 6; This moment, current vortex sensor 26 can record the location variation of rotating ring spacer 31, tested stationary seal ring 5 so and tested the location variation that the air-film thickness that seals between the rotating ring 6 is rotating ring spacer 31.
(2) slip measuring method: when experiment stationary seal ring 5 is separated with experiment sealing rotating ring 6; Sealing medium gas is leaked to inner radius by outer radius along the slit between experiment stationary seal ring 5 and the experiment sealing rotating ring 6; Because there are 29 sealings of O RunddichtringO in the gap between last stationary ring spacer 28 and the experiment stationary seal ring 5; So gas only leaks along pneumatic joint 25 and pneumatic tube 24; Pneumatic tube 24 links to each other with flowmeter 1 again, and the gas flow that records of flowmeter 1 is the end face released gas rate between experiment stationary seal ring 5 and the experiment sealing rotating ring 6 so.
Further, the described auxiliary seal stationary ring 10 of the utility model is butt-end packings that a kind of hole slot combines.
Described auxiliary seal stationary ring 10 outer radius of the utility model are processed with wicker leaf shape micropore endless belt 10a, and inner radius is processed with helicla flute-circular hole endless belt 10b.
All through being transferred to computing machine 20 after data acquisition and the conversion, gaseous tension numerical value all can show on computing machine 20 signal that current vortex sensor 26, flowmeter 1, pressure transducer 21 record in real time in end face air-film thickness, end face released gas rate and the annular seal space that records in the feasible experiment.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; Should not being regarded as of the protection domain of the utility model only limits to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (4)
1. air seal experimental provision; Comprise annular seal space, drive system, air feed loop and test macro; It is characterized in that: said annular seal space vertically is fixed on the support through screw, and said annular seal space comprises experiment sealing that is positioned at annular seal space top and the auxiliary seal that is positioned at the annular seal space bottom, and experiment sealing rotating ring and auxiliary seal rotating ring are installed on the rotating seat; Rotating seat is fixed on the axle sleeve through holding screw; Said experiment stationary seal ring links to each other with end cap through pin, and end cap links together through screw and annular seal space, and said auxiliary seal stationary ring links to each other with annular seal space through pin; Said annular seal space is provided with air intake opening and gas outlet, on the said annular seal space protective cover is installed; Said drive system comprises motor, shaft coupling, bearing housing, rotating shaft, and on support, said motor links to each other through described shaft coupling with said rotating shaft said motor through screw retention, and said bearing housing is arranged on the shaft coupling top through rotating shaft; Said air feed loop comprises compressor, pneumatic tube, pressure regulator valve, and said compressor links to each other with the air intake opening of annular seal space through pneumatic tube, and said pneumatic tube is provided with said pressure regulator valve; Described test macro comprises current vortex sensor, rotating ring spacer, flowmeter and pressure transducer; Said current vortex sensor and flowmeter all are installed on the said experiment stationary seal ring; Said rotating ring spacer is installed on the experiment sealing rotating ring, and said pressure transducer links to each other with said annular seal space.
2. air seal experimental provision according to claim 1 is characterized in that: described test macro also comprises computing machine, and said computing machine links to each other with motor in the said drive system.
3. air seal experimental provision according to claim 1; It is characterized in that: on the stationary seal ring of said experiment sealing stationary ring spacer and following stationary ring spacer are housed; The said stationary ring spacer of going up links to each other through screw with following stationary ring spacer; Be fixed together with the experiment stationary seal ring, the said stationary ring spacer of going up is provided with pneumatic joint, and an end of said pneumatic tube is connected on the pneumatic joint; The other end links to each other with flowmeter, and said rotating ring spacer and said experiment sealing rotating ring stick together through bonding agent.
4. air seal experimental provision according to claim 1 is characterized in that: there is protruding weir, location in the said rotating ring spacer outside, locatees and circumferentially is evenly distributed with a plurality of damping holes on the protruding weir, and said damping hole is a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203841890U CN202372319U (en) | 2011-10-11 | 2011-10-11 | Gas sealing experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203841890U CN202372319U (en) | 2011-10-11 | 2011-10-11 | Gas sealing experimental device |
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| Publication Number | Publication Date |
|---|---|
| CN202372319U true CN202372319U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203841890U Expired - Lifetime CN202372319U (en) | 2011-10-11 | 2011-10-11 | Gas sealing experimental device |
Country Status (1)
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| CN (1) | CN202372319U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507103A (en) * | 2011-10-11 | 2012-06-20 | 浙江工业大学 | Gas sealing experimental device and method |
| CN104062084A (en) * | 2014-07-03 | 2014-09-24 | 哈尔滨工程大学 | Test bench for comparison of working conditions of seal ring |
| CN105606319A (en) * | 2016-03-29 | 2016-05-25 | 三峡大学 | Test device and method for detecting sealing performance of waterproof strip of power cable |
| CN107631840A (en) * | 2017-09-22 | 2018-01-26 | 中国地质大学（北京） | A kind of labyrinth seal experimental provision with eccentric adjustment function |
| CN112924109A (en) * | 2021-03-11 | 2021-06-08 | 尤萍 | Chemical reaction kettle with leakage emergency treatment function and emergency treatment method |
-
2011
- 2011-10-11 CN CN2011203841890U patent/CN202372319U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507103A (en) * | 2011-10-11 | 2012-06-20 | 浙江工业大学 | Gas sealing experimental device and method |
| CN102507103B (en) * | 2011-10-11 | 2013-12-04 | 浙江工业大学 | Gas sealing experimental device and method |
| CN104062084A (en) * | 2014-07-03 | 2014-09-24 | 哈尔滨工程大学 | Test bench for comparison of working conditions of seal ring |
| CN105606319A (en) * | 2016-03-29 | 2016-05-25 | 三峡大学 | Test device and method for detecting sealing performance of waterproof strip of power cable |
| CN107631840A (en) * | 2017-09-22 | 2018-01-26 | 中国地质大学（北京） | A kind of labyrinth seal experimental provision with eccentric adjustment function |
| CN112924109A (en) * | 2021-03-11 | 2021-06-08 | 尤萍 | Chemical reaction kettle with leakage emergency treatment function and emergency treatment method |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120808 Effective date of abandoning: 20131204 |
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| AV01 | Patent right actively abandoned |
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