CN103969004B - High-low temperature environment dustproof sealing ring sealing performance testing device and testing method - Google Patents
High-low temperature environment dustproof sealing ring sealing performance testing device and testing method Download PDFInfo
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- CN103969004B CN103969004B CN201410200147.5A CN201410200147A CN103969004B CN 103969004 B CN103969004 B CN 103969004B CN 201410200147 A CN201410200147 A CN 201410200147A CN 103969004 B CN103969004 B CN 103969004B
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Abstract
The invention provides a high-low temperature environment dustproof sealing ring sealing performance testing device which comprises a high-low temperature box and a testing mechanism arranged in the high-low temperature box, and the testing mechanism comprises a mounting support, a driving mechanism, a sealing ring mounting shaft, a tested sealing ring and a collector. The tested sealing ring is arranged at the bottom of the mounting support in a penetrating mode, the lunar dust environment is simulated in a dust burying mode, the sealing ring mounting shaft penetrating in the tested sealing ring is powered by the driving mechanism, and the sealing ring mounting shaft is made to rotate relative to the sealing ring. The invention further provides a high-low temperature testing method. The device is adopted, the testing mechanism is arranged in the high-low temperature box, the temperature of the simulated lunar surface environment is set, the driving mechanism is started to rotate for certain circles and then is stopped, the collector is dismounted, the amount of dust passing through the collector is detected through a magnifying lens, the diameter of the collector is estimated, and whether the collector meets index requirements or not is determined. According to the device and method, testing and detecting are integrally designed, the high-low temperature testing environment meeting the practical environment is set, and the sealing performance of the sealing ring can be judged visually and accurately.
Description
Technical field
The present invention relates to the verification technique of dust-proof seal ring sealing property, particularly to a kind of high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing.
Background technology
In moonscape, daytime moon high temperature can reach 150 ° of c, and moonlit night low temperature reaches -180 ° of c, and the temperature difference is very big, and lunar dust static electrification.Month surface detector in the course of the work, if detector exposes mechanism outside and movable joint does not take effective dust prevention, can increase moving component friction, reduce transmission efficiency, can lead to mechanism blockage when serious inside lunar dust access mechanism.Seal approach therefore must be taken to prevent inside lunar dust access mechanism, thus eliminating the impact to mechanism for the lunar dust.
The examination of small-sized dust-proof seal ring sealing property being applied under high and low temperature environment and checking are related to that can sealing ring normally use.The test of dust-proof seal ring sealing property is essentially confined under normal temperature environment at present.Under 330 degree of big temperature difference environment, the test of anti-dust performance did not also occur.Application No. 201110320877.5, patent name is in the patent of " rotary shaft lip seal anti-drying dust experimental technique ", disclose a kind of sealing member Dustproof experiment method, its drive mechanism drives sealing ring rotation, blade is simultaneously driven to rotate the dust in the grey dust hood of agitation, finally the dust between detection sealing ring lip draws the sealing property of sealing ring.This patent has the disadvantage in that first, because lunar dust and floor-dust have larger difference, the dust motor pattern that the environment such as terrestrial gravitation, air cause is also different, the effect that the dust that driving blade rotates in the grey dust hood of agitation is unable to reach the airborne dust of dust on the moon, dust suspends is it is impossible to examine lunar surface dust-proof effect；Second, above-mentioned patent judges sealing by the quantity testing sealing lip part dust, even if there is a small amount of dust between sealing lip, nor affect on dust-proof effect, do not affect the normal operation of mechanism, because powder dust particle is thinner on the moon, penetrance is higher, under lunar environment, dust control technology means are more difficult to, so the test effect of above-mentioned patent is not good；3rd, if surveying dust between lip, easily bringing external dust, the even dust in experimental provision in the unloading process of sealing ring into, easily causing secondary pollution.
Content of the invention
For understanding the problems referred to above present invention also offers a kind of high/low temperature dust-proof seal ring sealing property testing equipment, including a mechanism for testing, described mechanism for testing further includes:
Mounting bracket, internal is in a rectangle accommodation space；
Drive mechanism, is arranged on the top of mounting bracket, and the lower end of described drive mechanism is provided with a sealing ring installation axle, and described drive mechanism provides power so that it is rotated for described sealing ring installation axle；The lower end of described sealing ring installation axle passes the bottom of described mounting bracket；
Tested sealing ring, is located on the bottom of described mounting bracket, and the outer radius portion of described tested sealing ring and described frame bottom interference fit, and by a fixed plate compression；Described tested sealing ring is set in described sealing ring installation axle, and described sealing ring installation axle rotates with respect to described tested sealing ring；Lower end in the accommodation space of described mounting bracket forms one and buries dirt space, and for placing dust, and the upper end of described tested sealing ring is embedded in described dust；
Catcher, is arranged on the lateral surface of described mounting bracket bottom, and described catcher covers the bottom of described sealing ring installation axle and the lower surface of described tested sealing ring.
It is preferred that described high/low temperature dust-proof seal ring sealing property testing equipment also includes a high-low temperature chamber, described mechanism for testing is placed in described high-low temperature chamber, and described high-low temperature chamber is used for simulating lunar surface environment temperature.
It is preferred that being provided with a first through hole at the position relative with described sealing ring installation axle of described mounting bracket bottom, the lower end of described sealing ring installation axle passes through described first through hole, and described tested sealing ring is arranged on the medial wall of described first through hole；
It is preferred that being provided with described fixed plate on the inner side end of described mounting bracket bottom, described fixed plate is pressed on the upper surface of described tested sealing ring；Second through hole is provided with described fixed plate, described sealing ring installation axle passes through has gap between described second through hole, and described second through hole and described sealing ring installation axle.
Preferably, described catcher is arranged in the end face outside of described mounting bracket bottom, it is provided with a groove at the position relative with described tested sealing ring in the end face outside of described catcher, and the notch of described groove is pressed on the outer ledge of described tested sealing ring lower surface.
Present invention also offers a kind of high/low temperature dust-proof seal ring sealing property method of testing, using high/low temperature dust-proof seal ring sealing property testing equipment as above, comprise the following steps:
Step one: described tested sealing ring is installed between described sealing ring installation axle and described mounting bracket bottom, and installs described catcher under a clean environment；
Step 2: put into dust into the accommodation space inside described mounting bracket, and make dust cover described tested sealing ring；
Step 3: start described drive mechanism, make described sealing ring installation axle quit work with respect to after described tested sealing ring operating regulation revolution；
Step 4: described catcher is disassembled, with amplifying quantity and the diameter of the dust on catcher described in sem observation, the quantity of the dust of acquisition and diameter is contrasted with standard value.
It is preferred that before described catcher is installed, being cleared up to described catcher and checked.
Preferably, described high/low temperature dust-proof seal ring sealing property testing equipment also includes a high-low temperature chamber, before starting described drive mechanism, described mechanism for testing is placed in described high-low temperature chamber, and described high-low temperature chamber is entered with trip temperature and set to simulate lunar surface environment temperature.
It is preferred that after described drive mechanism quits work, described catcher under dismantling under clean environment.
The present invention is due to using above technical scheme, being allowed to compared with prior art, have the following advantages that and good effect:
1) present invention provides high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing, add the tight sealing property examining sealing ring, to be applied to the investigation of sealing ring dust-proof effect under lunar surface environment by the way of dust imbedded by sealing ring；
2) present invention provides high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing, judge dust-proof effect by the quantity and diameter of dust on catcher, have the characteristics that the intuitive and accurate sealing property judging sealing ring；
3) present invention provides high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing, mount and dismount catcher, it is to avoid the secondary pollution of catcher, thus ensure that the accuracy of test result under clean environment.
4) present invention provides high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing, introduce high-low temperature chamber so that the present invention is applied to the test of the sealing ring of small-sized dust-proof seal ring under high and low temperature environment.
Brief description
In conjunction with accompanying drawing, by detailed description below, the above-mentioned and other feature and advantage of the present invention can be more clearly understood that, wherein:
Fig. 1 is the structural representation of mechanism for testing of the present invention；
Fig. 2 is the installation partial schematic diagram of the tested sealing ring of the present invention；
Fig. 3 is temperature test programme diagram of the present invention.
Symbol description:
1- mounting bracket
2- drive mechanism
3- sealing ring installation axle
The tested sealing ring of 4-
5- catcher
51- groove
6- mounting bracket bottom
61- groove part
7- fixed plate
8- buries dirt space
9- high-low temperature chamber.
Specific embodiment
Referring to the accompanying drawing of the embodiment of the present invention, the present invention is described in more detail.However, the present invention can realize in many different forms, and the embodiment that should not be construed as by herein proposing is limited.On the contrary, proposing these embodiments is to reach abundant and complete disclosure, and makes those skilled in the art understand the scope of the present invention completely.In these accompanying drawings, for clarity, may be exaggerated size and the relative size in layer and region.
Test for lunar surface small-sized polyfluortetraethyledust dust sealing ring high and low temperature environment seal performance energy, the invention provides a kind of high and low temperature environment dust-proof seal ring sealing property testing equipment and method of testing, by obtain tested sealing ring and sealing ring installation axle between in motor process dust amount of leakage, carry out obtaining the sealing property of tested sealing ring with the contrast of standard value.
With reference to Fig. 1, the invention provides a kind of high and low temperature environment dust-proof seal ring sealing property testing equipment, including a mechanism for testing, this mechanism for testing is made up of mounting bracket 1, drive mechanism 2, sealing ring installation axle 3, tested sealing ring 4 and catcher 5.Specifically, mounting bracket 1 is rectangular-shaped in one, and it is internally formed a coffin.The upper end of drive mechanism 2 is installed in the inside top of mounting bracket 1, and the lower end of drive mechanism 2 is connected with a sealing ring installation axle 3, and the lower end of sealing ring installation axle 3 passes through the bottom of mounting bracket 1, and drive mechanism 2 provides power so that it is rotated for sealing ring installation axle；Wherein, sealing ring installation axle 3 is replaceable axle, can process specific sealing ring installation axle 3, apply in experiments of sealing performance according to the different model of tested sealing ring 4, different size, and the material of real work axis.
In the present embodiment, tested sealing ring 4 is arranged on the bottom of mounting bracket 1.Frame bottom 6 is a detachable installing plate, and mounting bracket bottom 6 is installed in mounting bracket 1 by modes such as screws；Mounting bracket bottom 6 is provided with a first through hole with the corresponding position of sealing ring installation axle 3, and tested sealing ring 4 is located in first through hole, and the lateral wall of tested sealing ring 4 is against the medial wall of described first through hole；Wherein, as shown in Figure 2, it is designed with a bossing at the upper end-face edge of tested sealing ring 4, it is provided with the groove part 61 matching with bossing at the upper end-face edge of first through hole, when tested sealing ring 4 is installed in first through hole, bossing just snaps in groove part 61, plays the connection strengthened between tested sealing ring 4 and mounting bracket bottom 6.Sealing ring installation axle 3 is located in the interior of tested sealing ring 4；Sealing ring installation axle 3 rotates with respect to tested sealing ring 4 in the presence of drive mechanism 2.
One fixed plate 7 is additionally provided with the inner side end of mounting bracket bottom 6, the centre position of fixed plate 7 is provided with the second through hole, sealing ring installation axle 3 passes through the second through hole of fixed plate 7；Fixed plate 7 is installed on the inner side end of mounting bracket bottom 6 by modes such as screws, and first through hole and the second through hole are coaxially disposed, the edge of the second through hole be just pressed in tested sealing ring 4 upper surface by antermarginal position, and ensure to leave gap between the medial wall of the second through hole and sealing ring installation axle 3；Fixed plate 7 is mainly used in tested sealing ring 4 is further fixed, and improves test effect.Formed between the top of mounting bracket bottom 6 and mounting bracket 1 and bury dirt space 8, burying the dust adding in dirt space 8 for test, and make dust cover mounting bracket bottom 6, fixed plate 7, tested sealing ring 4 and sealing ring installation axle 3.Because lunar dust and floor-dust have larger difference, the dust motor pattern that the environment such as terrestrial gravitation, air cause is also different, if as the effect that agitation dust is unable to reach the airborne dust of dust on the moon, dust suspends rotated using driving blade in prior art, lunar surface dust-proof effect cannot be examined, the present invention adds tight examination sealing property by the way of sealing ring embedment dust, improve the effect of performance test, and be suitable for use in the performance test of the sealing ring under lunar surface environment.
In the present embodiment, catcher 5 is arranged in the end face outside of mounting bracket bottom 6.Specifically, catcher 5 end face relative with mounting bracket bottom 6 is provided with a groove 51；Catcher 5 is installed on mounting bracket bottom 6 by modes such as screws, the bottom of sealing ring installation axle 3 is located in groove 51, the slot-open-section of groove 51 is pressed on the outer ledge of tested sealing ring 4 lower surface, and leave gap between the medial wall of groove 51 and sealing ring installation axle 3, in order to leak, between the tested sealing ring 4 of catcher 5 collecting tank and sealing ring installation axle, the dust getting off.
In the present embodiment, this high and low temperature environment dust-proof seal ring sealing property testing equipment also includes a high-low temperature chamber 9, for simulating various high and low temperature environments.Specifically, the mechanism for testing being provided with tested sealing ring 4 is put in high-low temperature chamber 9, and fix a temperature sensor in mounting bracket bottom high-low temperature resistant adhesive tape (such as 3m92 Kapton adhesive tape), for detecting ambient temperature.According to the actual temperature environment situation of lunar surface, high-low temperature chamber 9 is set so as to internal simulation forms lunar surface environment temperature.Now, drive mechanism 2 is selected to the drive mechanism of high-low temperature resistant, in process of the test, whole mechanism for testing is put in high-low temperature chamber 9, rotation during the sealing ring performance test of tested sealing ring 4 needs to be provided by drive mechanism, and therefore drive mechanism needs to have adaptive capacity to environment and the ability to work under high and low temperature environment in itself.Present invention introduces high-low temperature chamber 9 is so as to be applied to the sealing ring performance test of small-sized dust-proof seal ring under high and low temperature environment.
Present invention also offers a kind of high/low temperature dust-proof seal ring sealing property method of testing, sealing property test is carried out using device as above, comprises the steps:
Step one: tested sealing ring 4 is installed between sealing ring installation axle 3 and mounting bracket bottom 6, and installs catcher 5 under a clean environment.
Specifically, tested sealing ring 4 is installed on mounting bracket bottom 6 prime minister, and by fixed plate 7, tested sealing ring 4 is further fixed, and the mounting bracket bottom 6 being provided with tested sealing ring 4 is installed in mounting bracket 1 by screw.Then, under a clean environment catcher 5 is installed on mounting bracket bottom 6, is installed under a clean environment, be to prevent the dust in the external world from entering in catcher, affecting result of the test.In addition, suitable cleaning and maintenance can be carried out before catcher 5 is installed, in order to avoid the judgement of impact result of the test.
Step 2: put into dust into the accommodation space of mounting bracket 1 inner side, and make dust cover tested sealing ring 4.
Specifically, the dust being used for testing is added to be buried in dirt space between mounting bracket bottom 6 upside and mounting bracket 1, and ensure that tested sealing ring 4 is embedded under dust, plus sternly examine sealing property, improve the effect of performance test, and be suitable for use in the performance test of the sealing ring under lunar surface environment.During adding dust, note avoiding polluteing catcher 5, in case the judgement of impact result of the test.
In the present embodiment, after mechanism for testing sets, whole mechanism for testing is put in high-low temperature chamber, in high-low temperature chamber, form a controlled high and low temperature environment.Then, high-low temperature chamber is entered with trip temperature set, high and low temperature environment change curve can be set to high-low temperature chamber according to actual condition, test temperature programme diagram for example as shown in Figure 3, in figure is provided with room temperature point, low temperature point a, low temperature point b, high temperature dot c etc., carry out sealing ring operating in the temperature spot setting, test sealing property, wherein heating, cooling speed general control is in 3 ° of c/min.In the present embodiment, it is primarily directed to moonscape high and low temperature environment set, certainly carry out certain adjustment also dependent on concrete condition, be not restricted herein.
Step 3: start drive mechanism 2, quit work after making the relatively tested sealing ring 4 operating regulation revolution of sealing ring installation axle 3.
The revolution that wherein sealing ring installation axle 3 operates, can be configured as the case may be, not be restricted herein.
Step 4: catcher 5 is disassembled, with amplifying quantity and the diameter of the dust on sem observation catcher 5, the quantity of the dust of acquisition and diameter is contrasted with standard value.
Specifically, first mechanism for testing is taken out from high-low temperature chamber, then under a clean environment catcher 5 is disassembled from mounting bracket base 6, to prevent catcher from receiving secondary pollution, the judgement of impact result of the test.After catcher 5 disassembles, by magnifier, the dust on catcher 5 is observed, the quantity of dust on catcher 5 is detected, and estimate its diameter；Again the quantity of the dust of acquisition and diameter are contrasted with standard required value, thus judging the sealing property of tested sealing ring.
In sum, the invention provides a kind of high/low temperature dust-proof seal ring sealing property testing equipment, including high-low temperature chamber and the mechanism for testing setting within it, it is provided with inside mechanism for testing and bury dirt space, mounting bracket, drive mechanism, tested sealing ring and catcher, drive mechanism is arranged in mounting bracket, and its lower end is provided with a sealing ring installation axle；Tested sealing ring is located on the bottom of mounting bracket, and the lower end of sealing ring installation axle passes through tested sealing ring to the outside of mounting bracket, buries and loads dust in dirt space and cover the upper end of tested sealing ring；Catcher is arranged on the lateral surface of mounting bracket bottom, covers the bottom of sealing ring installation axle and the lower surface of tested sealing ring.Present invention also offers a kind of high/low temperature dust-proof seal ring sealing property method of testing, using device as above, first the mechanism for testing being provided with tested sealing ring is placed in high-low temperature chamber, trip temperature of going forward side by side sets simulation lunar surface environment temperature, start after drive mechanism rotates certain revolution and stop, pulling down catcher, detected on catcher by the dust quantity of sealing ring with magnifier, and estimate its diameter, see whether meet index request.Present invention test detection integrated design, has and the actual high/low temperature test environment being consistent, and can the intuitive and accurate sealing property judging sealing ring.
Those skilled in the art should be understood that the present invention can be implemented without departing from the spirit or scope of the present invention with other concrete forms many.Although having been described for embodiments of the invention it should be understood that the present invention should not be limited to these embodiments, those skilled in the art can change and modifications as made within spirit and scope of the invention that appended claims define.
Claims (9)
1. it is characterised in that including a mechanism for testing, described mechanism for testing further includes a kind of high/low temperature dust-proof seal ring sealing property testing equipment:
Mounting bracket, internal is in a rectangle accommodation space；
Drive mechanism, is arranged on the top of mounting bracket, and the lower end of described drive mechanism is provided with a sealing ring installation axle, and described drive mechanism provides power so that it is rotated for described sealing ring installation axle；The lower end of described sealing ring installation axle passes the bottom of described mounting bracket；
Tested sealing ring, is located on the bottom of described mounting bracket, and the outer radius portion of described tested sealing ring and described frame bottom interference fit, and by a fixed plate compression；Described tested sealing ring is set in described sealing ring installation axle, and described sealing ring installation axle rotates with respect to described tested sealing ring；Lower end in the accommodation space of described mounting bracket forms one and buries dirt space, and for placing dust, and the upper end of described tested sealing ring is embedded in described dust；
Catcher, is arranged on the lateral surface of described mounting bracket bottom, and described catcher covers the bottom of described sealing ring installation axle and the lower surface of described tested sealing ring.
2. high/low temperature dust-proof seal ring sealing property testing equipment as claimed in claim 1, it is characterized in that, described high/low temperature dust-proof seal ring sealing property testing equipment also includes a high-low temperature chamber, described mechanism for testing is placed in described high-low temperature chamber, and described high-low temperature chamber is used for simulating lunar surface environment temperature.
3. high/low temperature dust-proof seal ring sealing property testing equipment as claimed in claim 1 or 2, it is characterized in that, described mounting bracket bottom is provided with a first through hole at the position relative with described sealing ring installation axle, the lower end of described sealing ring installation axle passes through described first through hole, and described tested sealing ring is arranged on the medial wall of described first through hole.
4. it is characterised in that being provided with described fixed plate on the inner side end of described mounting bracket bottom, described fixed plate is pressed on the upper surface of described tested sealing ring high/low temperature dust-proof seal ring sealing property testing equipment as claimed in claim 3；Second through hole is provided with described fixed plate, described sealing ring installation axle passes through has gap between described second through hole, and described second through hole and described sealing ring installation axle.
5. high/low temperature dust-proof seal ring sealing property testing equipment as claimed in claim 3, it is characterized in that, described catcher is arranged in the end face outside of described mounting bracket bottom, it is provided with a groove at the position relative with described tested sealing ring in the end face outside of described catcher, and the notch of described groove is pressed on the outer ledge of described tested sealing ring lower surface.
6. a kind of high/low temperature dust-proof seal ring sealing property method of testing, it is characterised in that adopting high/low temperature dust-proof seal ring sealing property testing equipment as claimed in claim 1, comprises the following steps:
Step one: described tested sealing ring is installed between described sealing ring installation axle and described mounting bracket bottom, and installs described catcher under a clean environment；
Step 2: put into dust into the accommodation space inside described mounting bracket, and make dust cover described tested sealing ring；
Step 3: start described drive mechanism, make described sealing ring installation axle quit work with respect to after described tested sealing ring operating regulation revolution；
Step 4: described catcher is disassembled, with amplifying quantity and the diameter of the dust on catcher described in sem observation, the quantity of the dust of acquisition and diameter is contrasted with standard value.
7. high/low temperature dust-proof seal ring sealing property method of testing as claimed in claim 6 is it is characterised in that before described catcher is installed, being cleared up to described catcher and checked.
8. high/low temperature dust-proof seal ring sealing property method of testing as claimed in claim 6, it is characterized in that, described high/low temperature dust-proof seal ring sealing property testing equipment also includes a high-low temperature chamber, before starting described drive mechanism, described mechanism for testing is placed in described high-low temperature chamber, and described high-low temperature chamber is entered with trip temperature and set to simulate lunar surface environment temperature.
9. high/low temperature dust-proof seal ring sealing property method of testing as claimed in claim 6 is it is characterised in that after described drive mechanism quits work, described catcher under dismantling under clean environment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410200147.5A CN103969004B (en) | 2014-05-13 | 2014-05-13 | High-low temperature environment dustproof sealing ring sealing performance testing device and testing method |
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| CN201410200147.5A CN103969004B (en) | 2014-05-13 | 2014-05-13 | High-low temperature environment dustproof sealing ring sealing performance testing device and testing method |
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| CN103969004B true CN103969004B (en) | 2017-01-18 |
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| CN104655417B (en) * | 2015-02-27 | 2017-05-24 | 哈尔滨工业大学 | Device for testing high and low temperature performance of certain indexing mechanism of space station |
| CN105004518B (en) * | 2015-07-22 | 2018-03-06 | 徐丹 | A kind of axle sealing ring equipment for testing service life |
| CN108073192A (en) * | 2017-12-06 | 2018-05-25 | 上海华力微电子有限公司 | A kind of intelligent gas hood based on high/low-temperature impact system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS54124788A (en) * | 1978-03-20 | 1979-09-27 | Toyota Motor Co Ltd | Device for measuring degree of sealing of dust cover for ball joint |
| US6276194B1 (en) * | 1999-06-01 | 2001-08-21 | Federal-Mogul World Wide, Inc. | Apparatus and method for testing the effectiveness of dynamic seals in a dust-laden operating environment |
| CN2881588Y (en) * | 2005-12-27 | 2007-03-21 | 比亚迪股份有限公司 | Dust prevention testing instrument |
| CN102288366B (en) * | 2011-05-13 | 2013-06-26 | 青岛开世密封工业有限公司 | Shell-rotation tester for muddy water resistance of sealing ring and testing method thereof |
| CN202195918U (en) * | 2011-08-22 | 2012-04-18 | 青岛开世密封工业有限公司 | Dust test device of lip-shaped sealing ring |
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