CN207947216U - A kind of gas density watch shell - Google Patents
A kind of gas density watch shell Download PDFInfo
- Publication number
- CN207947216U CN207947216U CN201820047456.7U CN201820047456U CN207947216U CN 207947216 U CN207947216 U CN 207947216U CN 201820047456 U CN201820047456 U CN 201820047456U CN 207947216 U CN207947216 U CN 207947216U
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- China
- Prior art keywords
- watchcase
- gas density
- observation window
- watch shell
- cover
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Abstract
The utility model discloses a kind of gas density watch shells, which is characterized in that the shell includes watchcase, cover and observation window；The watchcase includes bottom wall and side wall, and the bottom wall and side wall, which surround an one end, has the cylindrical shape of opening；The top of the side wall has to the ring edge of the watchcase inner recess；The ring is along with the folding face contacted with the observation window；The cover is covered in the open end of the watchcase；The observation window is located in the inner cavity of the cover.The utility model greatly improves the sealing performance of gas density watch shell, can effectively prevent because of employee's misoperation so that cover, which is not tightened, leads to poor sealing, to generate oil leak or gas leakage situation.
Description
Technical field
The utility model is related to the Density Detection technical fields of high-voltage electrical equipment, more particularly to kind of a gas density watchcase
Body.
Background technology
In industrial circle, routine work field and other fields, miscellaneous shell filling liquid is all largely used (such as
Vibrationproof oil) or inflation (such as sulfur hexafluoride gas, nitrogen, air) instrument, such as electric power, chemical industry, metallurgy, water supply department be extensive
The shock type oil dumped pressure gauge of application, such as widely applied absolute pressure type sulfur hexafluoride density table, oil-filled type in electric system
The instrument such as electro connecting pressure gauge and oil-filled type sulfur hexafluoride gas density relay.These instrument all play in respective post huge
Big effect promotes the fast development of human society.Because the performance quality of these instrument directly influences its related system
Reliable and secure operation, therefore how to ensure that gas or liquid in the shell of these instrument will not leak, ensure that it is
It unites reliable and secure operation, it has also become one of the vital task of people and work.Previous these instrument for being installed on scene, by one
Leakage problem occurs for the gas or liquid often occurred after section period in its shell.From the point of view of practical operation situation, due to these instrument
The sealing of junction block and shell on table is to be sealed in cambered surface, therefore its sealing effect is bad, and oil leak or leakage can usually occur
Gas problem causes instrument oil leak or gas leak phenomenon very universal, seriously affects the safety of system and reliable, and replace these instrument
Table will also spend many funds.
Particularly with the sulfur hexafluoride electric product being had been widely used at present in power department and industrial and mining enterprises, sulfur hexafluoride
The arc-extinguishing medium and dielectric of electric product is sulfur hexafluoride gas, and gas leakage cannot occur, if gas leakage occurs, cannot be ensured
The reliable and secure operation of sulfur hexafluoride electric product.So the lfur hexafluoride density value of monitoring sulfur hexafluoride electric product is very must
It wants.It is currently used to monitoring sulfur hexafluoride density and generally uses a kind of pointer type density relay of machinery, have when lithium
Sulphur electric product occurs to alarm when gas leakage and blocking function, also scene show the performance of density value.It is used at present close
Spending relay tip mainly uses electric contact type and microswitch type, electric contact type density monitor that will generally fill antivibration
Silicone oil, and the density monitor of microswitch type is also required to fill vibrationproof oil in some special occasions of vibration.At present in the world this
A little oil-filled or inflation density monitor due to the sealing of its junction block, observation window and shell is taken in cambered surface (or small arc
Face) on seal, sealing effect is bad, oil leak or leakage problem can usually occur, therefore can bring error, and damage is brought to user
It loses, normal use can be also influenced when serious.Therefore, the sealing performance of existing sulfur hexafluoride gas density meter shell how is improved,
The technical issues of being this field urgent need to resolve.
Invention content
The purpose of this utility model is to provide a kind of gas density watch shell, to improve the sealing of gas density watch shell
Performance effectively avoids oil leak or the generation of gas leak phenomenon.
To achieve the above object, the utility model provides following scheme：
A kind of gas density watch shell, the shell include watchcase, cover and observation window；The watchcase includes bottom wall and side
Wall, the bottom wall and side wall, which surround an one end, has the cylindrical shape of opening；The top of the side wall has to the table
The ring edge of shell inner recess；The ring is along with the folding face contacted with the observation window；Fluted, institute is set on the observation window
It states and places sealing ring in groove；The cover is covered in the open end of the watchcase；The observation window is located at the interior of the cover
In chamber.
Optionally, fluted, placement sealing ring in the groove is set on the observation window.
Optionally, the radical length of the folding face is more than or equal to 3mm.
Optionally, the surface roughness of the folding face is less than default roughness threshold value.
Optionally, the upper surface and lower face of the observation window are both provided with groove.
Optionally, sealing gland screw and sealing element are additionally provided on the watchcase, the sealing gland screw passes through the sealing element
It is fixed on the watchcase.
Optionally, the section on the ring edge is ladder structure of right angle.
Optionally, it is radially extended on the peripheral surface of the folding face and is distributed several arc chimbs.
Optionally, it is arranged on the lower face of the observation window fluted.
According to specific embodiment provided by the utility model, the utility model discloses following technique effects：By institute
A ring edge to the watchcase inner recess is arranged in the side wall top for stating watchcase, make the ring along tool there are one with it is described
The folding face of observation window parallel contact makes the sealing surface that a radial direction is formed between the watchcase and the observation window, as long as in this way
The cover is screwed on, so that it may to ensure housing seal, the flat seal that is used different from traditional gas density meter, it is necessary to
Cover compression just can ensure that sealing.Therefore the utility model greatly improves the sealing performance of gas density watch shell, can
It effectively prevent because of employee's misoperation, caused poor sealing is not tightened or compressed to cover, to the oil leak or gas leakage generated
The case where.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without having to pay creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for gas density watch shell that the utility model embodiment provides；
Fig. 2 is the diagrammatic cross-section for the watchcase that the utility model embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The purpose of this utility model is to provide a kind of gas density watch shell, to improve the sealing of gas density watch shell
Performance effectively avoids oil leak or the generation of gas leak phenomenon.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
As shown in Figure 1, the shell is cylindrical shape, including watchcase 101, cover 102 and observation window 103.The table
Shell 101 includes bottom wall 201 and side wall 202, and the bottom wall 201 and side wall 202, which surround an one end, has the cylindrical of opening
Shape (as shown in Figure 2).The top of the side wall 202 has the ring to 101 inner recess of the watchcase along 203；The ring is along 203
With the folding face 203A contacted with 103 lower face of the observation window；The lower face setting fluted 104 of the observation window 103, institute
It states and places sealing ring 105 in groove 104；The cover 102 is covered in the open end of the watchcase 101；The observation window 103
In the inner cavity of the cover 102.
202 top of the side wall of the watchcase 101 has the ring to 101 inner recess of the watchcase along 203.The ring
Section along 203 is the ladder structure of right angle of similar recess.The ring has flat with the lower face of the observation window 103 along 203
Capable folding face 203A.Radical length L >=3mm of the folding face 203A.The lower face of the folding face 203A and the observation window 103
It is in contact, is formed the sealing surface of a radial direction >=3mm.It forms between the observation window 103 and the watchcase 101
Radial seal, as long as this ensures that the cover 102 is screwed on, so that it may to ensure that watchcase seals.And existing gas
The flat seal that density meter uses, it is necessary to which cover compression just can ensure that sealing.If employee's misoperation, is not twisted well
Tightly, it there is the possibility of gas leakage.Therefore the gas density watch shell provided by the utility model, it is real along 203 by the ring
Existing radial seal between the observation window 103 and the watchcase 101 greatly improves the leakproofness of gas density watch shell
Can, it can effectively prevent because of employee's misoperation, cover does not tighten or without poor sealing caused by compressing, to generate leakage
The case where oil or gas leakage.
Also, the folding face 203A makes the inner peripheral surface of the folding face 203A (be contacted with the observation window by machining
One side) surface roughness be less than default roughness threshold value, form the good sealing surface of finish of a radial direction >=3mm.
Further improve the sealing performance of air density meter watchcase.The ring along 203 peripheral surface (folding face and the observation window
Discontiguous one side) on radially extend be distributed several arc chimbs.
Fluted 104 are arranged on the observation window, sealing ring 105 is placed in groove 104.The cover 102 is by the sight
Examine window 103, the sealing ring 105 is installed on the fastening ring of the watchcase 101 along 203.The ring along 203 the folding face
203A is by forming reliable sealing between the sealing ring 105 and the observation window 103.Existing air density meter generally use
The seal compression of flat seal measure, sealing element cannot control well, if seal compression is big, on the one hand,
It may cause rubber seal that compression set occurs when mounted；On the other hand so that rubber seal generates larger
Equivalent von mises stress greatly reduces its service life to cause the failure of rubber seal material, and cause gas leakage or
Oil leak；If instead decrement is too small, just it is easy to will produce leakage.And the groove 104 of the utility model setting can make
The seal compression of the sealing ring 105 is controlled effectively, and the decrement of sealing ring 105 is made to reach scheduled desired value,
So as to greatly prolong the service life of sealing ring 105, the sealing performance of shell is further improved.
Sealing gland screw 106 is additionally provided on the watchcase 101, the sealing gland screw 106 is fixed on institute by sealing element 107
It states on watchcase 101.The sealing gland screw 106 and the sealing element 107 can not only play the role of better seal, can also protect
It is atmospheric pressure (generally standard atmospheric pressure) to demonstrate,prove the air pressure that the enclosure interior is sealed.If without the sealing gland screw 106,
The air pressure of the enclosure interior is subject to extruding, and watchcase air pressure inside is caused not to be inconsistent with local standard atmospheric pressure, so as to cause
The accuracy of the gas density value of measurement.
Therefore, the shell of the air density meter provided by the utility model has excellent sealing performance, to both may be used
With fill vibrationproof oil, can also inflatable body, expand the application range of air density meter.Watchcase described in the utility model can be applied
In various air density meters or density monitor, including various pressure gauges (such as sulfur hexafluoride gas pressure gauge), sulfur hexafluoride
Air density meter, sulfur hexafluoride gas density relay and sulfur hexafluoride gas mixture density monitor, density of nitrogen relay
Deng.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
Specific case used herein is expounded the principles of the present invention and embodiment, above example
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, according to the thought of the utility model, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of gas density watch shell, which is characterized in that the shell includes watchcase, cover and observation window；The watchcase packet
Bottom wall and side wall are included, the bottom wall and side wall, which surround an one end, has the cylindrical shape of opening；The top of the side wall has
The ring edge of the oriented watchcase inner recess；The ring is along with the folding face contacted with the observation window；The cover is covered in
The open end of the watchcase；The observation window is located in the inner cavity of the cover.
2. a kind of gas density watch shell according to claim 1, which is characterized in that be provided on the observation window recessed
Slot, the groove is interior to place sealing ring.
3. a kind of gas density watch shell according to claim 1, which is characterized in that the radical length of the folding face is more than
Equal to 3mm.
4. a kind of gas density watch shell according to claim 1, which is characterized in that the surface roughness of the folding face is small
In default roughness threshold value.
5. a kind of gas density watch shell according to claim 2, which is characterized in that the upper surface of the observation window and
Lower face is both provided with groove.
6. a kind of gas density watch shell according to claim 1, which is characterized in that be additionally provided with sealing gland on the watchcase
Screw and sealing element, the sealing gland screw are fixed on by the sealing element on the watchcase.
7. a kind of gas density watch shell according to claim 1, which is characterized in that the section on the ring edge is right angle ladder
Shape structure.
8. a kind of gas density watch shell according to claim 1, which is characterized in that radial on the peripheral surface of the folding face
Extend and is distributed several arc chimbs.
9. a kind of gas density watch shell according to claim 2, which is characterized in that set on the lower face of the observation window
It is equipped with groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820047456.7U CN207947216U (en) | 2018-01-12 | 2018-01-12 | A kind of gas density watch shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820047456.7U CN207947216U (en) | 2018-01-12 | 2018-01-12 | A kind of gas density watch shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207947216U true CN207947216U (en) | 2018-10-09 |
Family
ID=63701680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820047456.7U Active CN207947216U (en) | 2018-01-12 | 2018-01-12 | A kind of gas density watch shell |
Country Status (1)
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| CN (1) | CN207947216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037042A (en) * | 2018-01-12 | 2018-05-15 | 上海乐研电气有限公司 | A kind of air density meter |
| CN110459430A (en) * | 2019-09-03 | 2019-11-15 | 上海卓电电气有限公司 | A kind of gas density relay |
-
2018
- 2018-01-12 CN CN201820047456.7U patent/CN207947216U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037042A (en) * | 2018-01-12 | 2018-05-15 | 上海乐研电气有限公司 | A kind of air density meter |
| CN108037042B (en) * | 2018-01-12 | 2024-04-09 | 上海乐研电气有限公司 | Gas density meter |
| CN110459430A (en) * | 2019-09-03 | 2019-11-15 | 上海卓电电气有限公司 | A kind of gas density relay |
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