CN201378090Y - Ground isolation device for sensor - Google Patents
Ground isolation device for sensor Download PDFInfo
- Publication number
- CN201378090Y CN201378090Y CN200920126438U CN200920126438U CN201378090Y CN 201378090 Y CN201378090 Y CN 201378090Y CN 200920126438 U CN200920126438 U CN 200920126438U CN 200920126438 U CN200920126438 U CN 200920126438U CN 201378090 Y CN201378090 Y CN 201378090Y
- Authority
- CN
- China
- Prior art keywords
- sensor
- ring
- insulating ceramics
- insulating ceramic
- ceramics ring
- 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 - Lifetime
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Abstract
The utility model relates to a ground isolation device for a sensor. The device comprises glass, a metal ring and a die base, and is characterized in that a boss is arranged on an inner circle of an insulating ceramic ring, a through hole with a diameter ranging from 1mm to 1.5mm is disposed on the insulating ceramic ring along a radial direction, two end faces of the boss of the insulating ceramic ring are positioned on the die base, the metal ring and the base are respectively placed above and under the insulating ceramic ring, and the insulating ceramic ring is sealed with the glass, the metal ring and the die base. By sealing the insulating ceramic ring in the die base of the sensor, the sensor is isolated from the ground, thereby improving anti-interference performance of the sensor and guaranteeing normal work of the sensor.
Description
Technical field
The utility model relates to a kind of sensor, particularly the 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 insulating ceramics ring is disposed radially the through hole that diameter 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 insulating ceramics ring is disposed radially the through hole that diameter 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 |
|---|---|---|---|
| CN200920126438U CN201378090Y (en) | 2009-02-25 | 2009-02-25 | Ground isolation device for sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126438U CN201378090Y (en) | 2009-02-25 | 2009-02-25 | Ground isolation device for sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378090Y true CN201378090Y (en) | 2010-01-06 |
Family
ID=41518207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920126438U Expired - Lifetime CN201378090Y (en) | 2009-02-25 | 2009-02-25 | Ground isolation device for sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378090Y (en) |
-
2009
- 2009-02-25 CN CN200920126438U patent/CN201378090Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING CHUANYI INSTRUMENT FACTORY NO.17 CO., LT Free format text: FORMER OWNER: CHONGQING SICHUAN INSTRUMENT COMPLEX CO., LTD. Effective date: 20120515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120515 Address after: 400700, Longfeng village, No. 7, Beibei District, Chongqing Patentee after: Chongqing Chuanyi 17 Factory Co., Ltd. Address before: 400700 Beibei District People's village, No. 1, Chongqing Patentee before: Chongqing Sichuan Instrument Complex Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING SICHUAN INSTRUMENT COMPLEX CO., LTD. Free format text: FORMER OWNER: CHONGQING CHUANYI 17TH FACTORY Effective date: 20141204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141204 Address after: 400700 Beibei District People's village, No. 1, Chongqing Patentee after: Chongqing Sichuan Instrument Complex Co., Ltd. Address before: 400700, Longfeng village, No. 7, Beibei District, Chongqing Patentee before: Chongqing Chuanyi 17 Factory Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |
|
| CX01 | Expiry of patent term |