CN201955282U - Closed instrument filled with gas or liquid - Google Patents
Closed instrument filled with gas or liquid Download PDFInfo
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- CN201955282U CN201955282U CN201020683061XU CN201020683061U CN201955282U CN 201955282 U CN201955282 U CN 201955282U CN 201020683061X U CN201020683061X U CN 201020683061XU CN 201020683061 U CN201020683061 U CN 201020683061U CN 201955282 U CN201955282 U CN 201955282U
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- watchcase
- instrument
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- gas
- openend
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Abstract
The utility model discloses a closed instrument filled with gas or liquid, which comprises an instrument casing, an instrument cover, an observation window and a seal part. The instrument cover covers an end opening of the instrument casing, the observation window is positioned in an inner cavity of the instrument casing, and the seal part is arranged between the observation window and the instrument casing. A seal face parallel to an inner end face of the observation window and in hermetical contact with the same is arranged at an open end of the instrument casing, the width of the seal face is three to twelve times of the wall thickness of the instrument casing when the inner diameter of the instrument casing is smaller than or equal to 75mm, and the width of the seal face is four to fifteen times of the wall thickness of the instrument casing when the inner diameter of the instrument casing is larger than 75mm. The smaller arc seal face of the instrument in the prior art is modified into a large planar seal contact face in the technical scheme, so that the sealing performance of the casing is better, and more importantly, the instrument (or relay) can be filled with anti-vibration oil or gas, and thereby application range of products is widened.
Description
Technical field
The utility model relates to sulfur hexafluoride density table or the pointer density monitor on a kind of sulfur hexafluoride electric product, relates in particular to a kind of instrument that is filled with gas or liquid of hermetic type.
Background technology
At industrial circle, in routine duties, in other field, all using the instrument of housing topping up miscellaneous (as vibrationproof oil) or inflation (as sulfur hexafluoride gas, nitrogen) in a large number, promoted the development of human progress and civilization.As the shock type oil dumped pressure gauge of department's widespread uses such as electric power, chemical industry, metallurgy, water supply, as instrument such as the absolute pressure type sulfur hexafluoride density table of widespread use in the electric system, oil-filled type electro connecting pressure gauge and oil-filled type sulfur hexafluoride gas density relays.These instrument are all being brought into play enormous function in post separately, have promoted the fast development of human society.Interior gas or the liquid that can not of housing that how to guarantee these instrument leaks, and guarantees the reliable and secure operation of its system, become people's vital task and one of work.Because the performance quality of these instrument directly has influence on the reliable and secure operation of its related system.Be installed on these on-the-spot instrument, gas or the liquid generation leakage problem in its housing often appears in after date during through one section.From practical operation situation, these instrument leakage of oils or gas leak phenomenon are very general, and the safety that has a strong impact on system is with reliable, simultaneously as changing the expensive again funds of these instrument.Because the junction block on these instrument and the sealing of housing are owing to be to take to seal on cambered surface, its sealing effectiveness is bad, and leakage of oil or gas leakage problem usually can take place; Because the view window on these instrument also is to seal on little cambered surface, its sealing effectiveness is bad, and leakage of oil or gas leakage problem usually can take place.
The sulfur hexafluoride electric product has been widely used in power department at present, and industrial and mining enterprises have promoted the fast development of power industry.The reliable and secure operation that guarantees the sulfur hexafluoride electric product has become one of vital task of power department.The arc-extinguishing medium of sulfur hexafluoride electric product and insulating medium are sulfur hexafluoride gas, can not leak gas, if leak gas, just can not guarantee the reliable and secure operation of sulfur hexafluoride electric product.So the sulfur hexafluoride density value of monitoring sulfur hexafluoride electric product is very necessary.Be used for now monitoring the pointer density monitor that sulfur hexafluoride density generally adopts a kind of machinery, have when gas leakage takes place the sulfur hexafluoride electric product and can report to the police and blocking function, also have the performance of on-the-spot display density value.The density monitor contact that uses mainly adopts electric contact type and microswitch type at present; electric contact type density monitor generally all will fill the silicone oil that antivibration is used; and vibrating special occasion at some, the density monitor of microswitch type also needs to fill vibrationproof oil; and at present in the world the density monitor of these oil-filled or inflations because the sealing of its junction block, view window and housing all is to take to go up in cambered surface (or little cambered surface) to seal; its sealing effectiveness is bad; leakage of oil or gas leakage problem usually can take place; bring error, bring loss to the user.Also can influence normal use when serious.And these inflations in the market or oil-filled density monitor comprise that watchcase 1, table cover 2, seal 3 and view window 4 (see figure 1)s.Because the sealing surface of the relative view window 4 of openend of watchcase 1 is cambered surface or facet; seal 3 is placed on the facet or displacement easily on the cambered surface; and do not have the effect of sealing; therefore leakage of oil or gas leakage problem usually can take place; bring error; more bring loss, also can influence normal use when serious to the user.
Summary of the invention
The utility model is intended to solve the problems of the technologies described above, and a kind of instrument that is filled with gas or liquid of hermetic type is provided.It can improve the sealing property of the housing of instrument greatly, reliably plays huge effect for ensureing its security of system.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of instrument that is filled with gas or liquid of hermetic type, comprise watchcase, cover the openend of watchcase table lid, the view window in the table cover cavity, be located at the seal between view window and the watchcase.Wherein: the openend of described watchcase is provided with the sealing surface of an and sealing contact parallel with the inner face of described view window, and when the internal diameter of described watchcase during smaller or equal to 75 millimeters, the width of described sealing surface is that three times of wall thickness of described watchcase are to twelvefold; When the internal diameter of described watchcase during greater than 75 millimeters, the width of described sealing surface is four times to 15 times of wall thickness of described watchcase.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the openend of described watchcase is provided with a ring edge, and described sealing surface is the upper surface on this ring edge.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the openend of the described watchcase sealing transition spare that is tightly connected, described sealing surface is the upper surface of sealing transition piece.
The another kind of technical scheme that realizes above-mentioned purpose is: a kind of instrument that is filled with gas or liquid of hermetic type, comprise watchcase, cover the openend of watchcase table lid, the view window in the table cover cavity, the support member between view window and the watchcase, be located between support member and the view window on seal and be located at support member and watchcase between lower seal.Wherein: the openend of described watchcase is provided with the sealing surface of an and sealing contact parallel with the lower surface of described support member, and when the internal diameter of described watchcase during smaller or equal to 75 millimeters, the width of described sealing surface is that three times of wall thickness of described watchcase are to twelvefold; When the internal diameter of described watchcase during greater than 75 millimeters, the width of described sealing surface is four times to 15 times of wall thickness of described watchcase.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the openend of described watchcase is provided with a ring edge, and described sealing surface is the upper surface on this ring edge, and the width of the upper surface on the upper and lower end face of described support member and described ring edge is corresponding.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the openend of the described watchcase sealing transition spare that is tightly connected, described sealing surface is the upper surface of sealing transition piece, the width of the upper and lower end face of described support member and the upper surface of described sealing transition spare is corresponding.
The technical scheme of the instrument that is filled with gas or liquid of hermetic type of the present utility model, by being big plane sealing contact surface to less circular-arc sealing surface, make its housing seal performance better, leakage or the gas leakage and the infiltration phenomenon of vibrationproof oil can not take place, can improve sealing property like this.This instrument of what is more important (or relay) can be filled vibrationproof oil, also can inflate body, improves the quality of products greatly, enlarges the product range of application.
Explanation in addition, the instrument that is filled with gas or liquid of hermetic type of the present utility model comprises various sulfur hexafluoride gas density tables, sulfur hexafluoride gas density relay and sulfur hexafluoride gas mixture density monitor.
Description of drawings
Fig. 1 is the structural representation of the instrument that is filled with gas or liquid of prior art;
Fig. 2 is the structural representation of the instrument that is filled with gas or liquid of hermetic type of the present utility model;
Fig. 3 is the structural representation of first kind of embodiment of instrument of the present utility model;
Fig. 4 is the structural representation of second kind of embodiment of instrument of the present utility model;
Fig. 5 is the structural representation of the third embodiment of instrument of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:
See also Fig. 2, it is the instrument that is filled with gas or liquid that representative illustrates hermetic type of the present utility model that the applicant intends with a kind of follow-on absolute pressure type density meter, the action principle of this density meter is based on the flexible member Bourdon tube, utilize temperature compensating element that the pressure and temperature that changes is revised, the variation of reaction sulfur hexafluoride gas density.Promptly under the pressure effect of measured medium sulfur hexafluoride gas, because the effect of temperature compensating element has been arranged, the variation of its density value, force value also changes accordingly, force the end of Bourdon tube to produce corresponding elastic deformation-displacement,, pass to movement by means of temperature compensating element and connecting link, movement passes to pointer again, then tested sulfur hexafluoride gas density value is indicated on index dial.Reach the sulfur hexafluoride gas density in the equipment such as supervision and control electric switch, make the electrical equipment trouble free service.
This density meter comprises watchcase 1, cover the openend of watchcase 1 table lid 2, build view window 4 in 2 inner chambers, be located at the seal 3 between view window 4 and the watchcase 1 at table.Wherein, watchcase 1 seals, and the openend of watchcase 1 is provided with the sealing surface of an and sealing contact parallel with the lower surface of view window 4.The radially indentation earlier of the shell wall of the nearly openend of watchcase 1, axially be bent upwards again, last radial expansion, make this extension constitute a ring along 10, certainly this ring also can be made of the direct radial expansion flange of nearly openend shell wall of watchcase 1 along 10, or weld an annulus at the openend of watchcase 1 and constitute, sealing surface is the upper surface of this ring along 10, and the width of sealing face is that four times of wall thickness of watchcase 1 are to twelvefold.The lower surface of the ring that the snap ring 20 that the utilization table covers 2 lower ends is stuck in watchcase 1 along 10, the ring that view window 4, seal 3 can be pressed on watchcase 1 upper surface along 10.The openend of watchcase 1 changes the sealing on the little cambered surface of taking in the prior art into big flat seal by such processing, can improve sealing property greatly like this, can seal gas or oil sealing, and reaches good sealing effectiveness.
See also Fig. 3, the utility model is filled with second kind of embodiment of instrument of gas or liquid, this density meter comprises watchcase 1, cover the openend of watchcase 1 table lid 2, build view window 4 in 2 inner chambers, be located at the seal 3 between view window 4 and the watchcase 1 at table.Wherein, watchcase 1 seals, and the openend of watchcase 1 is provided with the sealing surface of an and sealing contact parallel with the lower surface of view window 4.The openend of watchcase 1 (as welding) the sealing transition spare 5 that is tightly connected, sealing surface is the upper surface of sealing transition piece 5, and the width of the upper surface of sealing transition spare 5 is that four times of wall thickness of watchcase 1 are to twelvefold.The outside surface of sealing transition spare 5 bottoms is provided with a flange 50, the snap ring 20 that the utilization table covers 2 lower ends is stuck in the bottom of flange 50, view window 4, seal 3 can be pressed on the upper surface of sealing transition spare 5, by above processing, change the sealing on the little cambered surface of taking in the prior art into big flat seal, can improve its sealing property greatly like this, can seal gas or oil sealing, and reach good sealing effectiveness.
See also Fig. 4, the third embodiment of the instrument that is filled with gas or liquid of hermetic type of the present utility model (a kind of relay), comprise watchcase 1, cover the openend of watchcase 1 table lid 2, table cover view window 4 in 2 inner chambers, the support member 7 between view window 4 and the watchcase 1, be located between support member 7 and the view window 4 on seal 3 and be located at support member 7 and watchcase 1 between lower seal 6, wherein, watchcase 1 seals, and the openend of watchcase 1 is provided with the sealing surface of an and sealing contact parallel with the lower surface of view window 4.The radially indentation earlier of the shell wall of the nearly openend of watchcase 1, axially be bent upwards again, last radial expansion, make this extension constitute a ring along 10, certainly this ring also can be made of the direct radial expansion flange of nearly openend shell wall of watchcase 1 along 10, or weld an annulus at the openend of watchcase 1 and constitute, sealing surface is the upper surface of this ring along 10, and the width of sealing face is that four times of wall thickness of watchcase 1 are to twelvefold.The lower surface of the ring that the snap ring 20 that the utilization table covers 2 lower ends is stuck in watchcase 1 along 10 can be with view window 4, lower seal 3, support member 7 and go up ring that seal 6 be pressed on watchcase 1 upper surface along 10.The openend of watchcase 1 changes the sealing on the little cambered surface of taking in the prior art into big flat seal by such processing, can improve sealing property greatly like this, can seal gas or oil sealing, and reaches good sealing effectiveness.
See also Fig. 5, the 4th kind of embodiment of the instrument that is filled with gas or liquid of hermetic type of the present utility model (a kind of relay), comprise watchcase 1, cover the openend of watchcase 1 table lid 2, table cover view window 4 in 2 inner chambers, the support member 7 between view window 4 and the watchcase 1, be located between support member 7 and the view window 4 on seal 3 and be located at support member 7 and watchcase 1 between lower seal 6, wherein, watchcase 1 seals, and the openend of watchcase 1 is provided with the sealing surface of an and sealing contact parallel with the lower surface of support member 7.The openend of watchcase 1 (as welding) the sealing transition spare 5 that is tightly connected, sealing surface is the upper surface of sealing transition piece 5, and the width of the upper surface of sealing transition spare 5 is that four times of wall thickness of watchcase 1 are to twelvefold.The outside surface of sealing transition spare 5 bottoms is provided with a flange 50, the snap ring 20 that the utilization table covers 2 lower ends is fastened on the bottom of flange 50, view window 4, last seal 6, support member 7 and lower seal 3 can be pressed on the upper surface of sealing transition spare 5, reach good sealing effectiveness, can seal gas or oil sealing.By above processing, change the sealing on the little cambered surface of taking in the prior art into big flat seal, can improve sealing property greatly like this, can seal gas or oil sealing, and reach good sealing effectiveness.
Those of ordinary skill in the art will be appreciated that, above embodiment and principle explanation only be used for illustrating of the present utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, and all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. the instrument that is filled with gas or liquid of a hermetic type, comprise watchcase, cover the openend of watchcase table lid, the view window in the table cover cavity, be located at the seal between view window and the watchcase, it is characterized in that, the openend of described watchcase is provided with the sealing surface of an and sealing contact parallel with the inner face of described view window, when the internal diameter of described watchcase during smaller or equal to 75 millimeters, the width of described sealing surface is that three times of wall thickness of described watchcase are to twelvefold; When the internal diameter of described watchcase during greater than 75 millimeters, the width of described sealing surface is four times to 15 times of wall thickness of described watchcase.
2. the instrument that is filled with gas or liquid of hermetic type according to claim 1 is characterized in that, the openend of described watchcase is provided with a ring edge, and described sealing surface is the upper surface on this ring edge.
3. the instrument that is filled with gas or liquid of hermetic type according to claim 1 is characterized in that, the openend of the described watchcase sealing transition spare that is tightly connected, and described sealing surface is the upper surface of sealing transition piece.
4. the instrument that is filled with gas or liquid of a hermetic type, comprise watchcase, cover the table lid of the openend of watchcase, be arranged in the view window of table cover cavity, support member between view window and watchcase, be located at the last seal between support member and the view window and be located at support member and watchcase between lower seal, it is characterized in that, the openend of described watchcase is provided with the sealing surface of an and sealing contact parallel with the lower surface of described support member, when the internal diameter of described watchcase during smaller or equal to 75 millimeters, the width of described sealing surface is that three times of wall thickness of described watchcase are to twelvefold; When the internal diameter of described watchcase during greater than 75 millimeters, the width of described sealing surface is four times to 15 times of wall thickness of described watchcase.
5. the instrument that is filled with gas or liquid of hermetic type according to claim 4, it is characterized in that, the openend of described watchcase is provided with a ring edge, and described sealing surface is the upper surface on this ring edge, and the width of the upper surface on the upper and lower end face of described support member and described ring edge is corresponding.
6. the instrument that is filled with gas or liquid of hermetic type according to claim 4, it is characterized in that, the openend of the described watchcase sealing transition spare that is tightly connected, described sealing surface is the upper surface of sealing transition piece, and the width of the upper and lower end face of described support member and the upper surface of described sealing transition spare is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020683061XU CN201955282U (en) | 2010-12-27 | 2010-12-27 | Closed instrument filled with gas or liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020683061XU CN201955282U (en) | 2010-12-27 | 2010-12-27 | Closed instrument filled with gas or liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955282U true CN201955282U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020683061XU Expired - Fee Related CN201955282U (en) | 2010-12-27 | 2010-12-27 | Closed instrument filled with gas or liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201955282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257033A (en) * | 2015-06-19 | 2016-12-28 | 镇江耀华密封电器有限公司 | A kind of electromotor sealing cushion for cover |
-
2010
- 2010-12-27 CN CN201020683061XU patent/CN201955282U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257033A (en) * | 2015-06-19 | 2016-12-28 | 镇江耀华密封电器有限公司 | A kind of electromotor sealing cushion for cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161221 Address after: Shanghai City, Jiading District Nanxiang Town lies north road 1755 Lane 21, B zone four Patentee after: Shanghai joy Electric Co., Ltd. Address before: Qingpu District of Shanghai city Shen brick road building 201802 new No. 221 Building 1 B zone 1 room 123 Patentee before: Shanghai Roye Electronic Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20181227 |