CN105042144A - Sealing protection system and method for closed device - Google Patents
Sealing protection system and method for closed device Download PDFInfo
- Publication number
- CN105042144A CN105042144A CN201510523761.XA CN201510523761A CN105042144A CN 105042144 A CN105042144 A CN 105042144A CN 201510523761 A CN201510523761 A CN 201510523761A CN 105042144 A CN105042144 A CN 105042144A
- Authority
- CN
- China
- Prior art keywords
- type device
- closed
- respiratory hag
- main body
- spiracle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
Abstract
The invention discloses a sealing protection system for a closed device. The system comprises a breathing hole formed in a shell of the closed device and a breathing bag made from airtight materials. The interior of the closed device and the outside are communicated through the breathing hole. The breathing bag further comprises a ventilation hole and a breathing bag body. The ventilation hole is connected with the breathing hole in a sealing manner. According to the system, due to the fact that the breathing bag is arranged in the closed device, the balance of pressure inside and outside the closed device is kept through exhaling and inhaling of the breathing bag. The sealing performance of the closed device is effectively guaranteed, and therefore the service life of elements in the closed device is prolonged. The invention further discloses a sealing protection method for the closed device.
Description
Technical field
The present invention relates to field of sealing technology, particularly a kind of seal protection system and method for closed-type device.
Background technique
At present, the device containing precision electronic element mostly is closed-type device, in order to avoid precision electronic element in device lost efficacy owing to being subject to the interference of such undesirable element such as moisture in extraneous such as air or dust.In order to assurance device good seal, need various encapsulation process, as stamped sealer at seam crossing or line place.But, after device energising work, or due to element heating itself, or owing to producing frictional heat etc. in work, enclosed space can produce a large amount of heat, makes device internal gas expand, cause enclosed space to there is a draught head with extraneous, be easy to destroy its sealing.After the sealing of this device is destroyed, during work, produce heat, discharge internal gas, when sucking the impurity such as the moisture in air after cooling down, forming a respiratory, if things go on like this can affect the working life of inner member.In order to overcome this type of defect, the rubber ring of eardrum formula is now commercially adopted to be arranged on the shell of locking device, solve above-mentioned said problem of expanding with heat and contract with cold, but there is drawback in eardrum formula, eardrum formula application area is limited on the one hand, on the other hand when after seal arrangement heating, the volume expanded out needs certain pressure to extrapolation eardrum rubber, seal arrangement is inner still exists pressure difference with the external world, this pressure difference can still can exist destructive to hermetic unit, as sealer comes unstuck, eardrum rubber comes off, and using effect is very undesirable.
The present invention devises a kind of seal protection system and method for closed-type device; this system and method is by arranging respiratory hag in closed-type device inside; utilize the expiration of respiratory hag and air-breathing to maintain the balance of closed-type device inside and ambient pressure; effectively ensure that the sealability of closed-type device, thus extend the working life of closed-type device inner member.
Summary of the invention
In order to overcome in prior art existing defect, the invention provides that a kind of structure is simple, the seal protection system and method for closed-type device of reliable performance.
A kind of seal protection system and method for closed-type device of the present invention is achieved through the following technical solutions:
For a seal protection system for closed-type device, comprise:
Spiracle, it is arranged on the shell of described closed-type device, and the inside of described closed-type device is connected with the external world;
The respiratory hag be made up of gas impermeable material, it comprises ventilating hole and respiratory hag main body, and described ventilating hole and the described spiracle of wherein said respiratory hag are tightly connected.
Further, in described closed-type device, the region of contiguous described spiracle has the space for holding described respiratory hag main body.
Further, in size and the described closed-type device of described respiratory hag main body, the expansivity of the size in described space of contiguous described spiracle, the size of described closed-type device and its internal gas is relevant; The material of described respiratory hag is relevant to the working environment residing for it.
Further, described respiratory hag main body is positioned at the described space of the contiguous described spiracle of described closed-type device, and along with the change of the temperature of described closed-type device inside, described respiratory hag main body comprises following two kinds of processes:
Exhalation process, when the temperature of described closed-type device inside raises, its internal gas expands, and air pressure inside, higher than the external world, causes the gas in described respiratory hag main body to be discharged to the external world by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance;
Breathing process, when the temperature of described closed-type device inside reduces, its internal gas shrinks, and air pressure inside, lower than the external world, causes ambient atmos to flow into described respiratory hag body interior by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance.
Further, the change of the temperature of described closed-type device inside is caused by inner member operational heat or exterior temperature change.
Further, described seal protection system is applicable to, when described closed-type device immerses in liquid, keep the balance between described closed-type device ambient pressure and internal pressure.
For a sealing protection method for closed-type device, it is characterized in that, comprise:
The shell of described closed-type device arranges spiracle, the inside of described closed-type device is connected with the external world;
The respiratory hag be made up of gas impermeable material is connected to described spiracle, and described respiratory hag comprises ventilating hole and respiratory hag main body, and more specifically, described ventilating hole and the described spiracle of wherein said respiratory hag are tightly connected.
Further, in described closed-type device, the region of contiguous described spiracle has the space for holding described respiratory hag main body.
Further, in size and the described closed-type device of described respiratory hag main body, the expansivity of the size in described space of contiguous described spiracle, the size of described closed-type device and its internal gas is relevant; The material of described respiratory hag is relevant to the working environment residing for it.
Further, described respiratory hag main body is positioned at the described space of the contiguous described spiracle of described closed-type device, and along with the change of the temperature of described closed-type device inside, described respiratory hag main body comprises following two kinds of processes:
Exhalation process, when the temperature of described closed-type device inside raises, its internal gas expands, and air pressure inside, higher than the external world, causes the gas in described respiratory hag main body to be discharged to the external world by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance;
Breathing process, when the temperature of described closed-type device inside reduces, its internal gas shrinks, and air pressure inside, lower than the external world, causes ambient atmos to flow into described respiratory hag body interior by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance.
Owing to adopting above technological scheme, the present invention compared with prior art tool has the following advantages:
1. seal protection system architecture is simple, can effectively utilize the expiration of respiratory hag and air-breathing to maintain the balance of the inner and ambient pressure of closed-type device, guarantee that inside and outside closed-type device, fully pressure-free is poor, avoid inner and outer air pressure/hydraulic difference to the damage of sealability.
2. respiratory hag is positioned at closed-type device inside, is the Appropriate application of internal volume, both without the need to taking space outerpace, also not fragile.
3. seal protection system is not only applicable to general environment, even if closed-type device is soaked in water, and the balance that still can keep between closed-type device ambient pressure and internal pressure by the respiration of respiratory hag.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the seal protection system for closed-type device of the present invention;
Fig. 2 A is the schematic diagram of the exhalation process for the seal protecting device in built-in motor;
Fig. 2 B is the partial enlarged drawing of the exhalation process of seal protecting device shown in Fig. 2 A;
Fig. 3 A is the schematic diagram of the breathing process for the seal protecting device in built-in motor;
Fig. 3 B is the partial enlarged drawing of the breathing process of seal protecting device shown in Fig. 3 A.
Description of reference numerals
100 spiracles, 200 respiratory hags, 201 vents, 202 respiratory hag main bodys, 300 closed-type devices, 301 closed-type device shells, 400 inner members.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the structural representation according to the seal protection system for closed-type device of the present invention, and as shown in the figure, seal protection system comprises the spiracle 100 be arranged on the shell 301 of closed-type device, and the respiratory hag 200 be made up of gas impermeable material.Wherein, the inside of closed-type device 300 is connected with the external world by spiracle 100.Respiratory hag 200 comprises vent 201 and respiratory hag main body 202 further, and vent 201 and spiracle 100 are tightly connected.In one embodiment of the invention, the respiratory hag main body 202 of respiratory hag 200 is arranged in the space of the contiguous spiracle 100 in closed-type device inside, and the gas of respiratory hag 200 inside is communicated with ambient air by vent 201.Due to closed-type device 300, the inner member 400 of---controller of such as electric bicycle---mostly is accurate electronic component, these electronic components when the work of energising often the temperature of self can raise, and make the temperature of its surrounding atmosphere increase.Along with the change of the temperature of closed-type device 300 inside, respiratory hag main body 202 comprises following two kinds of processes: (1) exhalation process, when the temperature of closed-type device 300 inside raises, its internal gas expands, air pressure inside is higher than the external world, the gas in respiratory hag main body 202 is caused to be discharged to the external world by ventilating hole 201, until closed-type device 300 inner and outer air pressure reaches balance; (2) breathing process, when the temperature of closed-type device 300 inside reduces, its internal gas shrinks, and air pressure inside is lower than the external world, ambient atmos is caused to flow into respiratory hag main body 202 by ventilating hole 201 inner, until closed-type device 300 inner and outer air pressure reaches balance.
In order to realize above-mentioned functions, the size of respiratory hag main body 202 should be relevant to the expansivity of the size in space of spiracle 201 contiguous in closed-type device 300, the size of closed-type device 300 and its internal gas.More specifically, the volume differences that accounting temperature changes the internal gas that can cause in certain limit (excursion of inner member 400 operating temperature) is carried out according to the size of closed-type device 300 and the expansivity of internal gas, the size of respiratory hag main body 202 should not be less than this volume differences, to guarantee to offset air pressure inside to change the gas volume caused poor by protecting the expiration of respiratory hag 202 and air-breathing.And the size in the space of contiguous spiracle 201 should not be less than the size of respiratory hag main body 202 in closed-type device 300, to guarantee to hold respiratory hag main body 202.When closed-type device 300 is in particular job environment, the submersible machine of such as underwater operation, the size of respiratory hag main body 202 also should consider the change of the external pressure caused by diving depth difference.In addition, the material manufacturing respiratory hag 200 is also relevant to the working environment residing for closed-type device 300.Such as, when closed-type device 300 works in acidity/akaline liquid, respiratory hag 200 needs and this acidity/akaline liquid Long contact time, in order to ensure the working life of respiratory hag 200, acid resistance/alkali-resistant material should be used to make.According to the difference of working environment, the material manufacturing respiratory hag 200 can also have the characteristics such as high temperature resistant, corrosion-resistant.
Fig. 2 A-Fig. 3 B is respectively the exhalation process of the seal protecting device of built-in motor inside and the schematic diagram of breathing process and its partial enlarged drawing.In figure, closed-type device 300 is the built-in motor adopting oil sealing in electric bicycle, and its inside comprises the inner member 400 that numerous precision element such as electric machine controller, rotor, planetary gear speed reducing mechanism is formed.As seen in figs. 2a-2b, inner member 400 generates a large amount of heat after energising work, the pressure difference that the hot air slowing down internal expansion by the exhalation process of respiratory hag 200 causes; As shown in figs 3 a and 3b, when temperature components after inner member 400 power-off reduces, the pressure difference that the cool air slowing down internal contraction by the breathing process of respiratory hag 200 again causes, thus the destruction greatly reducing that built-in motor external and internal pressure difference causes its oil sealing.
The present invention utilizes the expiration of respiratory hag and air-breathing to maintain the balance of closed-type device inside and ambient pressure, is not destroyed to protect the sealability of closed-type device.Sealing protective system is applicable to protect the closed-type device sealed based on various sealing principle, such as seal ring sealing, water seal, oil sealing etc.The Environmental Conditions of closed-type device is also not limited only in air; namely; when this closed-type device is immersed in liquid; seal protection system still can guarantee the seal that can not cause destroying this closed-type device because of the imbalance of external and internal pressure; such as, the present invention can be used for generally using under enclosed environment oil-cooled motor, be applicable to submersible machine under water, special machines etc. that underground coal mine uses.Alternatively, respiratory hag also can be arranged at the outside suitable position of closed-type device.The shell of described closed-type device is also not limited only to the housing of closed-type device, but all surfaces with extraneous contact of general reference closed-type device, such as, Sealing as seal ring.
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1., for a seal protection system for closed-type device, it is characterized in that, comprise:
Spiracle, it is arranged on the shell of described closed-type device, and the inside of described closed-type device is connected with the external world;
The respiratory hag be made up of gas impermeable material, it comprises ventilating hole and respiratory hag main body, and described ventilating hole and the described spiracle of wherein said respiratory hag are tightly connected.
2. the seal protection system for closed-type device according to claim 1, is characterized in that, in described closed-type device, the region of contiguous described spiracle has the space for holding described respiratory hag main body.
3. the seal protection system for closed-type device according to claim 2, it is characterized in that, the size of described respiratory hag main body is relevant to the expansivity of the size in described space of described spiracle contiguous in described closed-type device, the size of described closed-type device and its internal gas; The material of described respiratory hag is relevant to the working environment residing for it.
4. the seal protection system for closed-type device according to claim 2; it is characterized in that; described respiratory hag main body is positioned at the described space of the contiguous described spiracle of described closed-type device; along with the change of the temperature of described closed-type device inside, described respiratory hag main body comprises following two kinds of processes:
Exhalation process, when the temperature of described closed-type device inside raises, its internal gas expands, and air pressure inside, higher than the external world, causes the gas in described respiratory hag main body to be discharged to the external world by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance;
Breathing process, when the temperature of described closed-type device inside reduces, its internal gas shrinks, and air pressure inside, lower than the external world, causes ambient atmos to flow into described respiratory hag body interior by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance.
5. the seal protection system for closed-type device according to claim 4, is characterized in that, the change of the temperature of described closed-type device inside is caused by inner member operational heat or exterior temperature change.
6. the seal protection system for closed-type device according to claim 2; it is characterized in that; described seal protection system is applicable to, when described closed-type device immerses in liquid, keep the balance between described closed-type device ambient pressure and internal pressure.
7. for a sealing protection method for closed-type device, it is characterized in that, comprise:
The shell of described closed-type device arranges spiracle, the inside of described closed-type device is connected with the external world;
The respiratory hag be made up of gas impermeable material is connected to described spiracle, and described respiratory hag comprises ventilating hole and respiratory hag main body, and more specifically, described ventilating hole and the described spiracle of wherein said respiratory hag are tightly connected.
8. the seal protection system for closed-type device according to claim 7, is characterized in that, in described closed-type device, the region of contiguous described spiracle has the space for holding described respiratory hag main body.
9. the seal protection system for closed-type device according to claim 8, it is characterized in that, the size of described respiratory hag main body is relevant to the expansivity of the size in described space of described spiracle contiguous in described closed-type device, the size of described closed-type device and its internal gas; The material of described respiratory hag is relevant to the working environment residing for it.
10. the seal protection system for closed-type device according to claim 8; it is characterized in that; described respiratory hag main body is positioned at the described space of the contiguous described spiracle of described closed-type device; along with the change of the temperature of described closed-type device inside, described respiratory hag main body comprises following two kinds of processes:
Exhalation process, when the temperature of described closed-type device inside raises, its internal gas expands, and air pressure inside, higher than the external world, causes the gas in described respiratory hag main body to be discharged to the external world by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance;
Breathing process, when the temperature of described closed-type device inside reduces, its internal gas shrinks, and air pressure inside, lower than the external world, causes ambient atmos to flow into described respiratory hag body interior by described ventilating hole, until described closed-type device inner and outer air pressure reaches balance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523761.XA CN105042144A (en) | 2015-08-25 | 2015-08-25 | Sealing protection system and method for closed device |
| PCT/CN2016/096686 WO2017032323A1 (en) | 2015-08-25 | 2016-08-25 | Sealing protection system and method for sealed apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523761.XA CN105042144A (en) | 2015-08-25 | 2015-08-25 | Sealing protection system and method for closed device |
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| Publication Number | Publication Date |
|---|---|
| CN105042144A true CN105042144A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523761.XA Pending CN105042144A (en) | 2015-08-25 | 2015-08-25 | Sealing protection system and method for closed device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105042144A (en) |
| WO (1) | WO2017032323A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332968A (en) * | 2015-11-26 | 2016-02-17 | 上海量能实业有限公司 | Air pressure balancing device for electric push rod |
| CN107176259A (en) * | 2017-07-10 | 2017-09-19 | 太仓市荣驰电机有限公司 | A kind of mounted in medium of bicycle motor shaft passes drive system |
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| CN202468933U (en) * | 2012-02-28 | 2012-10-03 | 青岛港（集团）有限公司 | Closed ventilator for reduction box |
| CN203178824U (en) * | 2013-02-25 | 2013-09-04 | 长缆电工科技股份有限公司 | Device for compensating for changes of gas pressure in sealed container, and pressure equalizing device |
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- 2015-08-25 CN CN201510523761.XA patent/CN105042144A/en active Pending
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2016
- 2016-08-25 WO PCT/CN2016/096686 patent/WO2017032323A1/en active Application Filing
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| JP2000069631A (en) * | 1998-08-19 | 2000-03-03 | Toshiba Corp | Gas-insulated electrical apparatus |
| CN2523724Y (en) * | 2001-12-07 | 2002-12-04 | 陈振有 | Volume varier for rigid sealed container |
| CN204012271U (en) * | 2014-06-28 | 2014-12-10 | 赣州天目领航科技有限公司 | The moistureproof regulator cubicle of a kind of air pressure balanced-type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332968A (en) * | 2015-11-26 | 2016-02-17 | 上海量能实业有限公司 | Air pressure balancing device for electric push rod |
| CN107176259A (en) * | 2017-07-10 | 2017-09-19 | 太仓市荣驰电机有限公司 | A kind of mounted in medium of bicycle motor shaft passes drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017032323A1 (en) | 2017-03-02 |
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Application publication date: 20151111 |