CN201348550Y - Ground isolating device of sensor - Google Patents
Ground isolating device of sensor Download PDFInfo
- Publication number
- CN201348550Y CN201348550Y CNU2008201006679U CN200820100667U CN201348550Y CN 201348550 Y CN201348550 Y CN 201348550Y CN U2008201006679 U CNU2008201006679 U CN U2008201006679U CN 200820100667 U CN200820100667 U CN 200820100667U CN 201348550 Y CN201348550 Y CN 201348550Y
- Authority
- CN
- China
- Prior art keywords
- sensor
- insulating ceramics
- ring
- ceramics ring
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a ground isolating device of a sensor, which comprises glass, a metal ring and a membrane seat, and is characterized in that a lug boss is arranged on the inner circle of an insulating ceramic ring, and the diameter of a through hole which is radially arranged on the insulating ceramic ring is 1mm to 1.5mm; the two end surfaces of the lug boss of the insulating ceramic ring are positioned on the membrane seat, and the metal ring and the membrane seat are respectively positioned above and below the insulating ceramic ring; and the insulating ceramic ring, the glass, the metal ring and the membrane seat are sealed. The insulating ceramic ring is sealed in the membrane seat of the sensor, so that the sensor is isolated from the ground, thereby improving the anti-jamming performance of the sensor and ensuring the normal work of the sensor.
Description
Technical field
The utility model relates to a kind of sensor, particularly a kind of spacer assembly over the ground of sensor.
Background technology
Pressure/differential pressure sensor is widely used in various field, as medicine equipment, Industry Control, pressure control, Aero-Space etc.Wherein the pressure/differential pressure sensor of metal capacitance principle work is widely used in the pressure detection of various media, because media environment is at the scene of Iron and Steel Production, environment measuring etc. mostly, working environment more complicated, abominable, easily produce stronger Electromagnetic Interference, because the induction of signal end of present Pressure and Difference Pressure Transmitter and shell are not isolated, make sensor directly be connected with the earth, sensor is subjected to the interference of electromagnetic signal and cisco unity malfunction often in work.
Summary of the invention
The purpose of this utility model provides a kind of spacer assembly over the ground of sensor, in the sensor film seat, sensor and ground is isolated insulating ceramics ring seal knot, improves the sensor insulativity, guarantees the operate as normal of sensor.
The technical solution of the utility model is: the spacer assembly over the ground of sensor, comprise glass, becket and film seat, it is characterized in that: the interior circle of insulating ceramics ring is provided with boss, the diameter of the through hole that the insulating ceramics ring is disposed radially is 1～1.5mm, insulating ceramics ring boss both ends of the surface are positioned the film seat, becket and film seat lay respectively at the upper and lower of insulating ceramics ring, insulating ceramics ring and glass, becket and film seat sealed knot.
The both ends of the surface edge of described insulating ceramics ring is a circular arc.
Adopt technical solutions of the utility model, the insulating ceramics ring becomes integral body by glass and film seat high temperature sintering.The insulating ceramics ring is isolated into two sections with the film seat of sensor, utilizes the high strength and the insulativity of pottery, makes between the induction of signal end of sensor and shell to isolate, and isolates purpose over the ground to reach inductor.Adopt the sensor of device preparation described in the utility model to isolate over the ground,, still have the ability of stronger anti-electromagnetic interference signal, guarantee the operate as normal of sensor even in complex operating environment.
Insulating ceramics ring described in the utility model is easy to processing and forming, and pottery has high-insulativity, high strength, has affinity with the same expansion coefficient glass, is easy to sealed knot.
Description of drawings
Fig. 1 is the structural representation of insulating ceramics ring;
Fig. 2 is a kind of embodiment of the present utility model.
Embodiment
Referring to Fig. 1 and Fig. 2, be provided with boss at the interior circle of insulating ceramics ring 2, boss both ends of the surface seam accurately is positioned metal film seat 1, in order to guarantee that ceramic ring is smooth with the coplane that the metal film seat is connected, is beneficial to the glass sealed knot.Insulating ceramics ring boss both ends of the surface are positioned the film seat, and becket and film seat lay respectively at the upper and lower of insulating ceramics ring, insulating ceramics ring and glass, becket and film seat sealed knot.The insulating ceramics ring is disposed radially a through hole 5, and is working properly to guarantee two pole plates of capacitance type sensor.The diameter of described through hole is 1～1.5mm, present embodiment insulating ceramics ring through-hole diameter is 1.1mm, the extension line of a utmost point of sensor capacitance pole plate passes described through hole and draws, both can fixation of sensor capacitor plate extension line, can guarantee again that the pole plate extension line does not need to add to the isolation of another pole plate again and isolate pottery.
The both ends of the surface edge of described insulating ceramics ring is circular-arc, makes ceramic ring and glass sealed knot face smooth, smooth, is the fillet smooth connection between ceramic plane and the glass.
Referring to Fig. 2, in the sintering anchor clamps of packing into behind film seat 1, ceramic ring 2, becket 3, glass 4 cleaning, dryings, heat fused glass in the gas shield stove, cooling cooling again, glass is one with ceramic ring, becket sealed knot.
In order to guarantee ceramic ring and glass sealed knot effect, the ceramic ring of use should have affinity with glass, and promptly the expansion coefficient of ceramic ring and glass is approaching, and both expansion coefficient differ should be less than 0.5.
Claims (2)
1. the spacer assembly over the ground of a sensor, comprise glass, becket and film seat, it is characterized in that: the interior circle of insulating ceramics ring is provided with boss, the diameter of the through hole that the insulating ceramics ring is disposed radially is 1～1.5mm, insulating ceramics ring boss both ends of the surface are positioned the film seat, becket and film seat lay respectively at the upper and lower of insulating ceramics ring, insulating ceramics ring and glass, becket and film seat sealed knot.
2. the spacer assembly over the ground of sensor according to claim 1, it is characterized in that: the both ends of the surface edge of described insulating ceramics ring is a circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201006679U CN201348550Y (en) | 2008-11-24 | 2008-11-24 | Ground isolating device of sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201006679U CN201348550Y (en) | 2008-11-24 | 2008-11-24 | Ground isolating device of sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348550Y true CN201348550Y (en) | 2009-11-18 |
Family
ID=41368016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201006679U Expired - Fee Related CN201348550Y (en) | 2008-11-24 | 2008-11-24 | Ground isolating device of sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348550Y (en) |
-
2008
- 2008-11-24 CN CNU2008201006679U patent/CN201348550Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2717276A3 (en) | Magnet apparatus | |
| CN202177405U (en) | Electromagnetic flowmeter sensor | |
| CN101738286B (en) | Ground isolating device for pressure/differential pressure sensor | |
| CN203037405U (en) | Floated differential capacitance sensor | |
| CN201891983U (en) | Detachable composite ceramic protective sleeve for tubular waste heat boiler | |
| CN201348550Y (en) | Ground isolating device of sensor | |
| CN104260114A (en) | Glove box body and production method thereof | |
| CN202042625U (en) | Connecting sleeve of water-cooling contact tube | |
| CN201378090Y (en) | Ground isolation device for sensor | |
| CN207715049U (en) | A kind of door for vacuum chamber sealing structure | |
| CN202990999U (en) | Thermal insulation connecting hoop of pipe column of heat-isolated oil pipe | |
| CN203411077U (en) | Glass substrate conveying roller with seal for vacuum coating production line | |
| CN203056491U (en) | Through-wall protection tube | |
| CN203837866U (en) | Multi-seal type pressure sensor | |
| CN203707036U (en) | Direct current contactor ceramic sealing improvement structure | |
| CN103344380A (en) | Anti-freezing ceramic pressure sensor packaging piece | |
| CN208059954U (en) | A kind of electromagnetic flowmeter | |
| CN201982669U (en) | Rotating shaft sectional magnetic fluid sealing device | |
| CN202453136U (en) | Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule | |
| CN105547569A (en) | High-temperature absolute pressure sensor | |
| CN205228705U (en) | Miniaturized differential pressure transmitter | |
| CN205154045U (en) | Cavity heat -preservation sleeve | |
| CN204903081U (en) | Vacuum sensor device | |
| CN103759096A (en) | Vacuum heat-insulated pipe | |
| CN203518655U (en) | Novel glass lining cup set type condenser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20101124 |