CN102539281A - Closed meter filled with gases or liquids - Google Patents
Closed meter filled with gases or liquids Download PDFInfo
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- CN102539281A CN102539281A CN2010106079926A CN201010607992A CN102539281A CN 102539281 A CN102539281 A CN 102539281A CN 2010106079926 A CN2010106079926 A CN 2010106079926A CN 201010607992 A CN201010607992 A CN 201010607992A CN 102539281 A CN102539281 A CN 102539281A
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Abstract
The invention discloses a closed meter filled with gases or liquids. The closed meter comprises a meter shell, a meter cover, an observation window and a seal element, wherein the meter cover is covered on the opening end of the meter shell; the observation window is positioned in the inner cavity of the meter cover; the seal element is arranged between the observation window and the meter shell; the opening end of the meter shell is provided with an annular edge, and the upper surface of the annular edge is parallel to the lower end surface of the observation window and is in contact with the seal element; the seal element is arranged between the meter shell and the observation window through a spacing mechanism so as to control the amount of compression of the seal element. Through changing a smaller arc-shaped seal surface into a large plane-shaped seal contact surface, the seal performance of the shell is better, the seal element is arranged between the meter shell and the observation window through the spacing mechanism so that the seal compression amount of the seal element is controlled effectively, the service life of the seal element is prolonged greatly, and the seal performance is improved; and more importantly, the meter (or a relay) can be filled with anti-vibration oil, and also can be filled with gases, thus the production application range is expanded.
Description
Technical field
The present invention relates to sulfur hexafluoride density table or pointer density monitor on a kind of sulfur hexafluoride electric product, relate 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 (like vibrationproof oil) or inflation (like sulfur hexafluoride gas, nitrogen) in a large number, promoted the development of human progress with civilization.Like the shock type oil dumped pressure gauge of department's widespread uses such as electric power, chemical industry, metallurgy, water supply, like 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 on cambered surface, to seal, 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 on little cambered surface, to seal, 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 at present mainly adopts electric contact type and microswitch type; Electric contact type density monitor generally all will fill the silicone oil that antivibration is used; And the density monitor of microswitch type also need fill vibrationproof oil in the special occasion of some vibration; And at present the density monitor of these oil-filled or inflations is 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 in the world, and its sealing effectiveness is bad, and 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, and 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, possibly 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 present invention 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 said watchcase; The openend of said watchcase is provided with a ring edge, so that the upper surface on said ring edge forms sealing surface parallel with the lower surface of said view window and that contact with said seal.Wherein, said seal is located between said view window and the said watchcase through position-limit mechanism, and said table lid is installed on said view window, seal on the said watchcase successively.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said position-limit mechanism is the groove that the upper surface on the ring edge of said watchcase is provided with, and said seal is placed in this groove, so that the upper surface on the ring edge of said watchcase is controlled the decrement of said seal.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said position-limit mechanism is provided with a high outside and low outside or outer low and inner high step surface for the upper surface on the ring edge of said watchcase; Said 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 said watchcase is controlled the decrement of said seal.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said position-limit mechanism is the locating part of setting up between the lower surface of the upper surface on the ring edge of said watchcase and said view window; A centre or a side at this locating part are provided with said seal, so that the decrement of said seal is controlled in the upper and lower end face of said locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, The groove that said locating part is provided with on the lower surface relative with said watchcase is placed said seal, so that the decrement of said seal is controlled in the lower surface of said locating part in this groove.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, The groove that said locating part is provided with on the upper surface relative with said view window is placed said seal, so that the decrement of said seal is controlled in the upper surface of said locating part in this groove.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said locating part is being provided with a groove respectively on the lower surface relative with said watchcase and on the upper surface relative with said view window; In this two groove, place said seal respectively, so that the decrement of said seal is controlled in the upper and lower end face of said locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type, wherein, said position-limit mechanism is the locating part of setting up in the inner chamber of said seal, so that the decrement of said seal is controlled in the upper and lower end face of said locating part.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said position-limit mechanism is for being provided with a high outside and low outside or outer low and inner high step surface on the said view window lower surface relative with said watchcase; Placing said seal on the inner ring surface of this step surface or on the outer ring surface, so that the decrement of said seal is controlled in the lower surface of said view window.
The instrument that is filled with gas or liquid of above-mentioned hermetic type; Wherein, Said position-limit mechanism for said view window with the relative lower surface of said watchcase on the groove that is provided with, in this groove, place said seal, so that the decrement of said seal is controlled in the lower surface of said view window.
The technical scheme of the instrument that is filled with gas or liquid of hermetic type of the present invention; Through 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 through a position-limit mechanism, and the seal compression of seal is controlled effectively, and makes its seal compression reach expected objective; 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 invention comprises various sulfur hexafluoride gas density tables, sulfur hexafluoride gas density relay and sulfur hexafluoride gas mixture density monitor.
Description of drawings
Below, in conjunction with accompanying drawing and embodiment the present invention is further described:
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 invention;
Fig. 3 is the structural representation of first kind of embodiment of instrument of the present invention;
Fig. 4 is the structural representation of second kind of embodiment of instrument of the present invention;
Fig. 5 is the structural representation of the third embodiment of instrument of the present invention;
Fig. 6 is the structural representation of the 4th kind of embodiment of instrument of the present invention;
Fig. 7 is the structural representation of the 5th kind of embodiment of instrument of the present invention;
Fig. 8 is the structural representation of the 6th kind of embodiment of instrument of the present invention;
Fig. 9 is the structural representation of the 7th kind of embodiment of instrument of the present invention;
Figure 10 is the structural representation of the 8th kind of embodiment of instrument of the present invention;
Figure 11 is the structural representation of the 9th kind of embodiment of instrument of the present invention.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the present invention is further described:
See also Fig. 2; It is the instrument that is filled with gas or liquid that hermetic type of the present invention is explained in representative 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, the variation of its density value have been arranged; 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 keeping watch on 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 is fastened on the lower surface on ring edge 10 and view window 4, seal 3 is installed on ring edge 10 the upper surface of watchcase 1.The sealing that the openend of watchcase 1 has changed on the little cambered surface of taking in the prior art through 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 through a position-limit mechanism, can control the decrement of seal 3, makes its seal compression reach expected objective, prolongs the serviceable life of sealing greatly, improves sealing property.
What Fig. 3 showed is the structure of first kind of position-limit mechanism, and 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, and seal 3 just is placed in this groove; The upper surface on the ring edge 10 of watchcase 1 can be controlled the decrement of seal 4 well, makes the seal compression of seal 3 reach expected objective, prolongs the serviceable life of seal greatly; Improve sealing property; Be placed on view window 4 on the seal 3, and then cover table 2 and be fixed on the watchcase 1, the snap ring 20 that so just can the utilization table covers 2 lower ends is fastened on the lower surface on ring edge 10 and compresses view window 4, seal 3; Reach 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 placed seal 3 for a high outside and low outside or outer low and inner high step surface is set at the ring of watchcase 1 upper surface along 10 on the inner ring surface of this step surface or on the outer ring surface, so that the decrement of the upper surface control seal 3 of the ring of watchcase along 10; Make the seal compression of seal 3 reach expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 on the seal 3; And then cover table 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 compress view window 4, seal 3, 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 is two locating parts of setting up between the lower surface of the ring of watchcase 1 upper surface along 10 and view window 4 51,52, in the centre of this two locating part 51,52 seal 3 is set, so that the decrement of seal 3 is controlled in the upper and lower end face of this two locating part 51,52; Make the seal compression of seal 3 reach expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 on the seal 3; And then cover table 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 compress view window 4, seal 3, 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 is the locating part of setting up between the lower surface of the ring of watchcase 1 upper surface along 10 and view window 45, in the outside and the inboard of this locating part 5 seal 3 is set, so that the decrement of seal 3 is controlled in the upper and lower end face of this locating part 5; Make the seal compression of seal 3 reach expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 on the seal 3; And then cover table 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 compress view window 4, seal 3, 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 is the locating part of setting up between the lower surface of the ring of watchcase 1 upper surface and the view window 4 along 10 5; And this locating part 5 is placed a seal 31,32 respectively, so that the decrement of the upper and lower end face of this locating part 5 control seal 3 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; Make the seal compression of seal 31,32 reach expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 on the seal 31; And then cover table 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 compress view window 4, seal 31,32, 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, in this groove, place seal 3, 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, and 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 expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 on the seal 3; And then cover table 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 compress view window 4, seal 3, 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 on the relative lower surface of the upper surface 10 on the ring edge of view window 4 and watchcase 1, a high outside and low outside step surface to be set, and on the inner ring surface of this step surface, places 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 expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 together with seal 3 on the upper surface 10 on ring edge of watchcase 1; And then cover table 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 compress view window 4, seal 3, 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 for being provided with on the lower surface relative with the upper surface on the ring edge of watchcase 1 10 at view window 4 placed seal 3, so that the decrement of the lower surface of view window 4 control seal 3 in this groove; Make the seal compression of seal 3 reach expected objective; Prolong the serviceable life of seal greatly, improve sealing property, be placed on view window 4 together with seal 3 on the upper surface 10 on ring edge of watchcase 1; And then cover table 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 compress view window 4, seal 3, 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 explaining of the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, and all will drop in claims scope of the present invention 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 said watchcase; The openend of said watchcase is provided with a ring edge; So that the upper surface on said ring edge forms sealing surface parallel with the lower surface of said view window and that contact with said seal; It is characterized in that said seal is located between said view window and the said watchcase through position-limit mechanism, said table lid is installed on said view window, seal on the said watchcase successively.
2. the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said position-limit mechanism is the groove that the upper surface on the ring edge of said watchcase is provided with; Said seal is placed in this groove, so that the upper surface on the ring edge of said watchcase is controlled the decrement of said seal.
3. the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said position-limit mechanism is provided with a high outside and low outside or outer low and inner high step surface for the upper surface on the ring edge of said watchcase; Said 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 said watchcase is controlled the decrement of said seal.
4. the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said position-limit mechanism is the locating part of setting up between the lower surface of the upper surface on the ring edge of said watchcase and said view window; A centre or a side at this locating part are provided with said seal, so that the decrement of said seal is controlled in the upper and lower end face of said 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 said locating part is provided with on the lower surface relative with said watchcase; In this groove, place said seal, so that the decrement of said seal is controlled in the lower surface of said 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 said locating part is provided with on the upper surface relative with said view window; In this groove, place said seal, so that the decrement of said seal is controlled in the upper surface of said locating part.
7. the instrument that is filled with gas or liquid of hermetic type according to claim 4; It is characterized in that; Said locating part is being provided with a groove respectively on the lower surface relative with said watchcase and on the upper surface relative with said view window; In this two groove, place said seal respectively, so that the decrement of said seal is controlled in the upper and lower end face of said locating part.
8. the instrument that is filled with gas or liquid of hermetic type according to claim 1 is characterized in that, said position-limit mechanism is the locating part of setting up in the inner chamber of said seal, so that the decrement of said seal is controlled in the upper and lower end face of said locating part.
9. the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said position-limit mechanism is for being provided with a high outside and low outside or outer low and inner high step surface on the said view window lower surface relative with said watchcase; Placing said seal on the inner ring surface of this step surface or on the outer ring surface, so that the decrement of said seal is controlled in the lower surface of said view window.
10. the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said position-limit mechanism for said view window with the relative lower surface of said watchcase on the groove that is provided with; In this groove, place said seal, so that the decrement of said seal is controlled in the lower surface of said view window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106079926A CN102539281A (en) | 2010-12-27 | 2010-12-27 | Closed meter filled with gases or liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106079926A CN102539281A (en) | 2010-12-27 | 2010-12-27 | Closed meter filled with gases or liquids |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104669918A Division CN103471639A (en) | 2010-12-27 | 2010-12-27 | Limit mechanism used for closed type instrument filled with gas or liquid |
| CN201310466965.5A Division CN103528921A (en) | 2010-12-27 | 2010-12-27 | Spacing mechanism used for enclosed instrument filled with gas or liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102539281A true CN102539281A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106079926A Pending CN102539281A (en) | 2010-12-27 | 2010-12-27 | Closed meter filled with gases or liquids |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102539281A (en) |
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| CN201663776U (en) * | 2010-03-04 | 2010-12-01 | 上海乐研电气科技有限公司 | Closed-type instrument filled with gas or liquid |
| CN201955283U (en) * | 2010-12-27 | 2011-08-31 | 上海乐研电气科技有限公司 | Closed instrument filled with gas or liquid |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5280926A (en) * | 1992-07-14 | 1994-01-25 | Texas Instruments Incorporated | Seal apparatus for pressure responsive electrical switch |
| CN2609138Y (en) * | 2003-03-07 | 2004-03-31 | 特变电工衡阳变压器有限公司 | Flangeseal structure for oil-immersed type transformer or reactor |
| CN2699283Y (en) * | 2004-05-31 | 2005-05-11 | 大连天盛仪表有限公司 | Double spring tube type hex-fluridizing controller |
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| CN201293160Y (en) * | 2008-10-08 | 2009-08-19 | 书元机械企业(昆山)有限公司 | Seal ring for pipe fitting sealing connection |
| CN201335710Y (en) * | 2009-01-22 | 2009-10-28 | 成都千嘉科技有限公司 | Improved far-passing wet-type water meter |
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Application publication date: 20120704 |