CN201955283U - Closed instrument filled with gas or liquid - Google Patents
Closed instrument filled with gas or liquid Download PDFInfo
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- CN201955283U CN201955283U CN2010206830624U CN201020683062U CN201955283U CN 201955283 U CN201955283 U CN 201955283U CN 2010206830624 U CN2010206830624 U CN 2010206830624U CN 201020683062 U CN201020683062 U CN 201020683062U CN 201955283 U CN201955283 U CN 201955283U
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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 open end of the instrument casing, the observation window is arranged in an inner cavity of the instrument cover, and the seal part is arranged between the observation window and the instrument casing. An annular edge is arranged at the open end of the instrument casing so that the upper surface of the annular edge is parallel to the lower end face of the observation window and in contact with the seal part. The seal part is arranged between the instrument casing and the observation window through a limit mechanism so that compression of the seal part is controlled. The smaller arc seal face is modified into a large planar seal contact face so that sealing performance of the casing is better. The seal part is arranged between the instrument casing and the observation window through the limit mechanism, so that sealing compression of the seal part can be controlled effectively, service life of the seal part is prolonged greatly, and sealing performance of the seal part is improved. More importantly, the instrument (or relay) can be filled with anti-vibration oil or gas, so that 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 the instrument that a kind of hermetic type is filled with gas or liquid.
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 at present; 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.And of paramount importance be this seal approach, the seal compression of its seal can not get better controlled, if seal compression is big, on the one hand, may cause rubber seal that compression set takes place when mounted; On the other hand, make rubber seal produce bigger equivalent Von Mises stress, thereby cause the inefficacy of rubber seal material, lower its serviceable life greatly, and cause gas leakage or leakage of oil; When if instead decrement is too small, just is easy to produce and leaks.So housing gas leakage or leakage of oil problem usually can take place in this density meter or density monitor, bring error, more bring loss to the user, also can influence normal use when serious.
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.
The 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 described watchcase, the openend of described watchcase is provided with a ring edge, so that the upper surface on described ring edge forms sealing surface parallel with the lower surface of described view window and that contact with described seal.Wherein, described seal is located between described view window and the described watchcase by position-limit mechanism, and described table lid is installed on described view window, seal on the described watchcase successively.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism is the groove that the upper surface on the ring edge of described watchcase is provided with, and described seal is placed in this groove, so that the upper surface on the ring edge of described watchcase is controlled the decrement of described seal.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism is that the upper surface on the ring edge of described watchcase is provided with a high outside and low outside or outer low and inner high step surface, described seal is placed on the inner ring surface of this step surface or on the outer ring surface, so that the upper surface on the ring edge of described watchcase is controlled the decrement of described seal.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism is the locating part of setting up between the lower surface of the upper surface on the ring edge of described watchcase and described view window, a centre or a side at this locating part are provided with described seal, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the groove that described locating part is provided with on the lower surface relative with described watchcase is placed described seal, so that the decrement of described seal is controlled in the lower surface of described locating part in this groove.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, the groove that described locating part is provided with on the upper surface relative with described view window is placed described seal, so that the decrement of described seal is controlled in the upper surface of described locating part in this groove.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described locating part is being provided with a groove respectively on the lower surface relative with described watchcase and on the upper surface relative with described view window, in this two groove, place described seal respectively, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism is the locating part of setting up in the inner chamber of described seal, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism is for being provided with a high outside and low outside or outer low and inner high step surface on the described view window lower surface relative with described watchcase, placing described seal on the inner ring surface of this step surface or on the outer ring surface, so that the decrement of described seal is controlled in the lower surface of described view window.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, described position-limit mechanism for described view window with the relative lower surface of described watchcase on the groove that is provided with, in this groove, place described seal, so that the decrement of described seal is controlled in the lower surface of described view window.
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, also adopting seal simultaneously is to be located between watchcase and the view window by a position-limit mechanism, the seal compression of seal is controlled effectively, make its seal compression reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property.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
Below, with embodiment the utility model is further described in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the instrument that is filled with gas or liquid of prior art;
Fig. 2 is filled with the structural representation of the instrument of gas or liquid for 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;
Fig. 6 is the structural representation of the 4th kind of embodiment of instrument of the present utility model;
Fig. 7 is the structural representation of the 5th kind of embodiment of instrument of the present utility model;
Fig. 8 is the structural representation of the 6th kind of embodiment of instrument of the present utility model;
Fig. 9 is the structural representation of the 7th kind of embodiment of instrument of the present utility model;
Figure 10 is the structural representation of the 8th kind of embodiment of instrument of the present utility model;
Figure 11 is the structural representation of the 9th kind of 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, the openend of watchcase 1 is provided with a ring along 10, so that ring forms sealing surface parallel with the lower surface of view window 4 and that contact with seal 3 along 10 upper surface, the snap ring 20 that the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and the ring that view window 4, seal 3 is installed on watchcase 1 along on 10 the upper surface.The sealing that the openend of watchcase 1 has changed on the little cambered surface of taking in the prior art by such processing changes flat seal into, can improve its sealing property greatly like this; Seal 3 is to be located between watchcase 1 and the view window 4 by a position-limit mechanism, can control the decrement of seal 3, makes its seal compression reach predetermined target, prolongs the serviceable life of sealing greatly, improves sealing property.
What Fig. 3 showed is the structure of first kind of position-limit mechanism, this position-limit mechanism is a watchcase 1 at the ring relative with view window 4 along being provided with a groove on 10 the upper surface, seal 3 just is placed in this groove, the ring of watchcase 1 can be controlled the decrement of seal 4 well along 10 upper surface, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 3, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, and reaches good sealing effectiveness, can seal gas or oil sealing.
What Fig. 4 showed is the structure of second kind of position-limit mechanism, this position-limit mechanism is for being provided with a high outside and low outside or outer low and inner high step surface at the ring of watchcase 1 upper surface along 10, place seal 3 on the inner ring surface of this step surface or on the outer ring surface, so that the ring of watchcase is controlled the decrement of seal 3 along 10 upper surface, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 3, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
What Fig. 5 showed is the structure of the third position-limit mechanism, this position-limit mechanism be set up the ring of watchcase 1 along 10 upper surface and two locating parts 51 between the lower surface of view window 4,52, at this two locating part 51,52 centre is provided with seal 3, so that this two locating part 51, the decrement of 52 upper and lower end face control seal 3, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 3, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
Fig. 6 and Fig. 7 show is the 4th and the structure of the 5th kind of position-limit mechanism, this position-limit mechanism be set up the ring of watchcase 1 along 10 upper surface and the locating part 5 between the lower surface of view window 4, the outside and inboard at this locating part 5 are provided with seal 3, so that the decrement of the upper and lower end face of this locating part 5 control seal 3, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 3, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
What Fig. 8 showed is the structure of the 6th kind of position-limit mechanism, this position-limit mechanism be set up the ring of watchcase 1 along 10 upper surface and the locating part 5 between the lower surface of view window 4, and this locating part 5 is being respectively equipped with a groove on the lower surface relative with watchcase 1 and on the upper surface relative with view window 4, in this two groove, place a seal 31 respectively, 32, so that the decrement of the upper and lower end face of this locating part 5 control seal 3, make seal 31,32 seal compression reaches predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 31, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 31,32 compress, reach good sealing effectiveness, can seal gas or oil sealing.
Certainly, locating part 5 can be only be provided with a groove on the lower surface relative with watchcase 1, place seal 3 in this groove, so that the decrement of the lower surface of this locating part 5 control seal 3; Perhaps only on the upper surface relative, a groove is set, in this groove, places seal 3, so that the decrement of the upper surface of this locating part 5 control seal 3 with view window 4.
What Fig. 9 showed is the structure of the 7th kind of position-limit mechanism, this position-limit mechanism is the locating part of setting up in the inner chamber of seal 35, so that the decrement of the upper and lower end face of locating part 5 control seal 3, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on the seal 3, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
What Figure 10 showed is the structure of the 8th kind of position-limit mechanism, this position-limit mechanism is for being provided with a high outside and low outside step surface on the relative lower surface of view window 4 and the upper surface 10 on the ring edge of watchcase 1, on the inner ring surface of this step surface, place seal 3, so that the decrement of the lower surface of view window 4 control seal 3, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on together with seal 3 on the upper surface 10 on ring edge of watchcase 1, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
What Figure 11 showed is the structure of the 9th kind of position-limit mechanism, the groove of this position-limit mechanism on the lower surface relative, being provided with the upper surface 10 on the ring edge of watchcase 1 at view window 4, in this groove, place seal 3, so that the decrement of the lower surface of view window 4 control seal 3, make the seal compression of seal 3 reach predetermined target, prolong the serviceable life of seal greatly, improve sealing property, view window 4 is placed on together with seal 3 on the upper surface 10 on ring edge of watchcase 1, and then table covered 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends be fastened on ring along 10 lower surface and view window 4, seal 3 compresses, reach good sealing effectiveness, can seal gas or oil sealing.
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 (10)
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 described watchcase, the openend of described watchcase is provided with a ring edge, so that the upper surface on described ring edge forms sealing surface parallel with the lower surface of described view window and that contact with described seal, it is characterized in that, described seal is located between described view window and the described watchcase by position-limit mechanism, and described table lid is installed on described view window, seal on the described watchcase successively.
2. the instrument that is filled with gas or liquid of hermetic type according to claim 1, it is characterized in that, described position-limit mechanism is the groove that the upper surface on the ring edge of described watchcase is provided with, described seal is placed in this groove, so that the upper surface on the ring edge of described watchcase is controlled the decrement of described seal.
3. the instrument that is filled with gas or liquid of hermetic type according to claim 1, it is characterized in that, described position-limit mechanism is that the upper surface on the ring edge of described watchcase is provided with a high outside and low outside or outer low and inner high step surface, described seal is placed on the inner ring surface of this step surface or on the outer ring surface, so that the upper surface on the ring edge of described watchcase is controlled the decrement of described seal.
4. the instrument that is filled with gas or liquid of hermetic type according to claim 1, it is characterized in that, described position-limit mechanism is the locating part of setting up between the lower surface of the upper surface on the ring edge of described watchcase and described view window, a centre or a side at this locating part are provided with described seal, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
5. the instrument that is filled with gas or liquid of hermetic type according to claim 4, it is characterized in that, the groove that described locating part is provided with on the lower surface relative with described watchcase, in this groove, place described seal, so that the decrement of described seal is controlled in the lower surface of described locating part.
6. the instrument that is filled with gas or liquid of hermetic type according to claim 4, it is characterized in that, the groove that described locating part is provided with on the upper surface relative with described view window, in this groove, place described seal, so that the decrement of described seal is controlled in the upper surface of described locating part.
7. the instrument that is filled with gas or liquid of hermetic type according to claim 4, it is characterized in that, described locating part is being provided with a groove respectively on the lower surface relative with described watchcase and on the upper surface relative with described view window, in this two groove, place described seal respectively, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
8. the instrument that is filled with gas or liquid of hermetic type according to claim 1 is characterized in that, described position-limit mechanism is the locating part of setting up in the inner chamber of described seal, so that the decrement of described seal is controlled in the upper and lower end face of described locating part.
9. the instrument that is filled with gas or liquid of hermetic type according to claim 1, it is characterized in that, described position-limit mechanism is for being provided with a high outside and low outside or outer low and inner high step surface on the described view window lower surface relative with described watchcase, placing described seal on the inner ring surface of this step surface or on the outer ring surface, so that the decrement of described seal is controlled in the lower surface of described view window.
10. the instrument that is filled with gas or liquid of hermetic type according to claim 1, it is characterized in that, described position-limit mechanism for described view window with the relative lower surface of described watchcase on the groove that is provided with, in this groove, place described seal, so that the decrement of described seal is controlled in the lower surface of described view window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206830624U CN201955283U (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 |
|---|---|---|---|
| CN2010206830624U CN201955283U (en) | 2010-12-27 | 2010-12-27 | Closed instrument filled with gas or liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955283U true CN201955283U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206830624U Expired - Fee Related CN201955283U (en) | 2010-12-27 | 2010-12-27 | Closed instrument filled with gas or liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN201955283U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539281A (en) * | 2010-12-27 | 2012-07-04 | 上海乐研电气科技有限公司 | Closed meter filled with gases or liquids |
| CN103471639A (en) * | 2010-12-27 | 2013-12-25 | 上海乐研电气科技有限公司 | Limit mechanism used for closed type instrument filled with gas or liquid |
| CN103528921A (en) * | 2010-12-27 | 2014-01-22 | 上海乐研电气科技有限公司 | Spacing mechanism used for enclosed instrument filled with gas or liquid |
-
2010
- 2010-12-27 CN CN2010206830624U patent/CN201955283U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539281A (en) * | 2010-12-27 | 2012-07-04 | 上海乐研电气科技有限公司 | Closed meter filled with gases or liquids |
| CN103471639A (en) * | 2010-12-27 | 2013-12-25 | 上海乐研电气科技有限公司 | Limit mechanism used for closed type instrument filled with gas or liquid |
| CN103528921A (en) * | 2010-12-27 | 2014-01-22 | 上海乐研电气科技有限公司 | Spacing mechanism used for enclosed instrument filled with gas or liquid |
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| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161216 Address after: 201802 Shanghai City, Jiading District Nanxiang Town, Yun 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20191227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |