CN202549314U - Observation window for closed meter filled with gas or liquid - Google Patents
Observation window for closed meter filled with gas or liquid Download PDFInfo
- Publication number
- CN202549314U CN202549314U CN2012201471022U CN201220147102U CN202549314U CN 202549314 U CN202549314 U CN 202549314U CN 2012201471022 U CN2012201471022 U CN 2012201471022U CN 201220147102 U CN201220147102 U CN 201220147102U CN 202549314 U CN202549314 U CN 202549314U
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- edge
- view window
- watchcase
- gas
- meter
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Abstract
The utility model discloses an observation window for a closed meter filled with gas or liquid. The meter case, a meter cover and a seal ring, the open end of the meter case is outwardly turned to form an edge, the meter cover comprises a meter ring, a sleeve and a snap ring, the sleeve is connected with the lower end surface of the edge of the meter ring, the snap ring is connected with the lower end of the sleeve, the inner diameter of the sleeve is matched with the outer diameter of the edge of the meter case, the seal ring is arranged on the upper surface of the edge of the meter case, the observation window is arranged on the upper surface of the edge of the meter case through the seal ring, and the meter cover sequentially presses the observation window and the seal ring on the upper surface of the edge of the meter case. The observation window is characterized in that the observation window is a piece of flat glass, and the lower end surface of the observation window, which is opposite to the upper surface of the edge of the meter case, is provided with an annular groove for holding the seal ring, so that the compression of the seal ring can be controlled by the lower end surface of the observation window. The observation window can greatly enhance the sealing property of the meter.
Description
Technical field
The utility model relates to a kind of view window of instrument, relates in particular to a kind of view window that hermetic type is filled with the instrument of gas or liquid that is used for.
Background technology
The sulfur hexafluoride electric product has been widely used in power department, industrial and mining enterprises at present.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.
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 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, possibly cause on the one hand rubber seal compression to take place when mounted and permanent strain; Make rubber seal produce bigger equivalent Von Mises stress on the other hand, 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 view window that is used for the 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 view window that is used for the instrument that is filled with gas or liquid of hermetic type; Said instrument comprises watchcase, table lid and O-ring seal; The openend of said watchcase is turnover one edge outwards; Said table lid comprises that sleeve and that a table ring, is connected the lower surface, edge of table ring is connected the clasp of sleeve lower end, and the edge external diameter of the internal diameter of sleeve and watchcase is adaptive, and said O-ring seal is located at the edge upper surface of watchcase; Said view window is located at the edge upper surface of said watchcase through said O-ring seal; Said table lid is withheld the upper surface at the edge of said watchcase with said view window and O-ring seal successively, and wherein, said view window is a sheet glass; Be provided with on the relative lower surface of the edge upper surface of this view window and said watchcase one can hold said O-ring seal annular groove so that the decrement of said O-ring seal is controlled in the lower surface of said view window.
The view window of the above-mentioned instrument that is filled with gas or liquid that is used for hermetic type; Wherein, Said view window is the adaptive circular sheet glass of internal diameter of the sleeve of a diameter and said table lid, and the adaptive boss of internal diameter of the table ring of a diameter and said table lid is set in the upper surface of this view window.
The view window of the above-mentioned instrument that is filled with gas or liquid that is used for hermetic type, wherein, the edge of said view window is provided with two circular arc cutaway at least.
The technical scheme of the view window of the instrument that is filled with gas or liquid that is used for hermetic type of the utility model; Through view window with the relative lower surface of watchcase on a groove is set, so that seal is located in the groove of view window, the decrement of seal is controlled effectively; Can prolong the serviceable life of seal widely; Improve sealing property, this instrument of what is more important (or relay) can be filled vibrationproof oil, also can inflate body; Improve the quality of products greatly, enlarge the product range of application.
Explanation in addition, the instrument that is filled with gas or liquid of hermetic type comprises various sulfur hexafluoride gas density tables, sulfur hexafluoride gas density relay and sulfur hexafluoride gas mixture density monitor.View window is watch glass again.
Description of drawings
Fig. 1 is the structural representation of the instrument that is filled with gas or liquid of prior art;
Fig. 2 a is the structural representation of first kind of embodiment of the view window of the utility model;
Fig. 2 b is that the A-A of Fig. 2 a is to view;
Fig. 3 a is the structural representation of second kind of embodiment of the view window of the utility model;
Fig. 3 b is that the B-B of Fig. 3 a is to view;
Fig. 4 is the scheme of installation of the view window of the utility model.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the utility model is further described:
It is the instrument that is filled with gas or liquid that the hermetic type of mentioning in the utility model is explained in representative that the applicant intends with a kind of follow-on absolute pressure type density meter; The principle of work 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.
See also Fig. 2 a and Fig. 2 b and combine to consult Fig. 4, the instrument that is filled with gas or liquid of hermetic type comprises that watchcase 1, table covers 2, O-ring seal 3 and view window 4, and wherein, the openend of watchcase 1 outwards turns down an edge 10; Table cover 2 and is connected the clasp 23 that sleeve 22 and that table encircles 21 lower surface, edge is connected sleeve 22 lower ends by a table ring 21, and constitutes, and the external diameter at the edge 10 of the internal diameter of sleeve 22 and watchcase 1 is adaptive; O-ring seal 3 is located at edge 10 upper surfaces of watchcase 1.
First kind of view window 4 that is used for the instrument that is filled with gas or liquid of hermetic type of the utility model is the adaptive circular sheet glass of internal diameter of the sleeve 22 of a diameter and table lid; Be provided with on view window 4 lower surface relative with edge 10 upper surfaces of watchcase 1 one can hold O-ring seal 3 annular groove 42; The upper surface of this view window 4 is provided with the adaptive boss 41 of internal diameter that a diameter and table cover 2 table ring 21; This view window 4 is located at edge 10 upper surfaces of watchcase 1 through being embedded in O-ring seal 3 in its annular groove 42; Table covers 2 and utilizes its clasp 23 to be fastened on the edge lower surface of watchcase 1 and successively view window 4 and O-ring seal 3 are pressed on the edge upper surface of watchcase 1; So that the decrement of the lower surface of view window 4 control O-ring seal 3 reaches good sealing effectiveness, can seal gas or oil sealing.
See also Fig. 3 a and Fig. 3 b again and combine to consult Fig. 4; The edge of view window 4 that second kind of the utility model is used for the instrument that is filled with gas or liquid of hermetic type is provided with two sections circular arc cutaway 40 at least; The edge 10 of watchcase 1 also is provided with two corresponding circular arc cutaway of the circular arc cutaway with view window 4 simultaneously; And the inner headed face that table cover the clasp 23 on 2 be provided with two respectively with view window 4 on the arc notch of two circular arc cutaway, 40 complementations; Table cover arc notch on 2 with after arc notch on view window 4 and the watchcase 1 cooperates, and makes the clasp of showing to cover on 2 23 be fastened on the edge lower surface of watchcase 1 and successively view window 4 and O-ring seal 3 is pressed on edge 10 upper surfaces of watchcase 1.
Those of ordinary skill in the art will be appreciated that; Above embodiment and principle explanation only are used for explaining the utility model; And be not the qualification that is used as the utility model; As long as in the connotation scope of the utility model, and all will drop in claims scope of the utility model variation, the modification of the above embodiment.
Claims (3)
1. view window that is used for the instrument that is filled with gas or liquid of hermetic type; Said instrument comprises watchcase, table lid and O-ring seal; The openend of said watchcase is turnover one edge outwards; Said table lid comprises that sleeve and that a table ring, is connected the lower surface, edge of table ring is connected the clasp of sleeve lower end, and the edge external diameter of the internal diameter of sleeve and watchcase is adaptive, and said O-ring seal is located at the edge upper surface of watchcase; Said view window is located at the edge upper surface of said watchcase through said O-ring seal; Said table lid is withheld the upper surface at the edge of said watchcase with said view window and O-ring seal successively, it is characterized in that said view window is a sheet glass; Be provided with on the relative lower surface of the edge upper surface of this view window and said watchcase one can hold said O-ring seal annular groove so that the decrement of said O-ring seal is controlled in the lower surface of said view window.
2. the view window that is used for the instrument that is filled with gas or liquid of hermetic type according to claim 1; It is characterized in that; Said view window is the adaptive circular sheet glass of internal diameter of the sleeve of a diameter and said table lid, and the adaptive boss of internal diameter of the table ring of a diameter and said table lid is set in the upper surface of this view window.
3. the view window that is used for the instrument that is filled with gas or liquid of hermetic type according to claim 1 and 2 is characterized in that the edge of said view window is provided with two circular arc cutaway at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201471022U CN202549314U (en) | 2012-04-10 | 2012-04-10 | Observation window for closed meter filled with gas or liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201471022U CN202549314U (en) | 2012-04-10 | 2012-04-10 | Observation window for closed meter filled with gas or liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549314U true CN202549314U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201471022U Expired - Fee Related CN202549314U (en) | 2012-04-10 | 2012-04-10 | Observation window for closed meter filled with gas or liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112078266A (en) * | 2020-09-16 | 2020-12-15 | 台州星星光电科技有限公司 | Processing method for surface integral black of 3D surface cover |
-
2012
- 2012-04-10 CN CN2012201471022U patent/CN202549314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112078266A (en) * | 2020-09-16 | 2020-12-15 | 台州星星光电科技有限公司 | Processing method for surface integral black of 3D surface cover |
| CN112078266B (en) * | 2020-09-16 | 2022-05-06 | 台州星星光电科技有限公司 | Processing method for surface integral black of 3D surface cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161228 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. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20200410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |