CN202453136U - Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule - Google Patents
Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule Download PDFInfo
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- CN202453136U CN202453136U CN2012200665374U CN201220066537U CN202453136U CN 202453136 U CN202453136 U CN 202453136U CN 2012200665374 U CN2012200665374 U CN 2012200665374U CN 201220066537 U CN201220066537 U CN 201220066537U CN 202453136 U CN202453136 U CN 202453136U
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- diaphragm capsule
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Abstract
The utility model discloses a novel capacitance pole plate suspension structure of a differential metal capacitance diaphragm capsule and belongs to a structure of the differential metal capacitance diaphragm capsule applicable to a series of pressure sensor of industrial automatic products. An isolating diaphragm and a protection ring are arranged at the lower end of a metal base, the inner surface of the metal base is connected with a metal pressure guide pipe, the other end of the metal pressure guide pipe is connected with a ceramic ring and a ceramic cap in a metal semi-cup body, metal oil filling pipes are arranged at the inner upper end of glass inside the metal semi-cup body, and silicon oil is filled in inner cavities of the metal oil filling pipes. The novel capacitance pole plate suspension structure of the differential metal capacitance diaphragm capsule has the advantages that the problems of low anti-interference, low measuring accuracy and low stability of the conventional differential pressure transmitter are solved, an electric signal isolating function is realized, and when measured pressure is applied to the isolating diaphragm of the differential capacitance diaphragm capsule, the pressure is transferred to two sides of a central metal diaphragm in a liquid pressure transfer mode through the silicon oil in diaphragm capsule cavities, so the working principle of the differential capacitance diaphragm capsule is unchanged, and the anti-interference capacity and stability of a capacitive differential pressure transmitter are greatly improved.
Description
Technical field
The utility model relates to the structure of the differential metal capacitance bellows that uses in the pressure transducer series of industrial automation product, a kind of specifically central metal diaphragm of differential metal capacitance bellows and electric conductor film pole plate suspension structure.
Background technology
Existing metal capacitance differential pressure transmitter mainly is delivered to the central metal diaphragm by isolation diaphragm, silicone oil, metal connecting pipe with the variation of external pressure; Make the central metal diaphragm produce certain displacement; Like this central metal diaphragm with it the electric capacity between the electric conductor film pole plate of both sides change; Because the variation of external pressure can convert the electric capacitance change between metallic membrane and electric conductor film pole plate into; The separately guide wire of changes in capacitance amount through between central metal diaphragm and electric conductor film pole plate linked the current signal of the standard that converts into again on the electronic circuit; What will specify here is existing metal capacitance differential pressure transmitter aufbauprinciple, makes central metal diaphragm and transmitter use the ground wire of mounting points or connects together greatly all the time, and therefore on-the-spot interference electric signal is easy to make the electric capacity between the electric conductor film pole plate of central metal diaphragm and both sides to change; Cause differential pressure transmitter anti-interference, measuring accuracy and stability are all relatively poor.
Summary of the invention
In order to overcome the defective of prior art, the purpose of the utility model is that central metal diaphragm and electric conductor film pole plate suspension structure a kind of simple in structure, easy to make, safe in utilization, a kind of differential metal capacitance bellows reliably will be provided.
The utility model solves the technical scheme that its technical matters adopted: the novel capacitor plate suspension structure of a kind of differential metal capacitance bellows; It is characterized in that: a metal base is arranged; The lower end of metal base is provided with isolation diaphragm and protective ring; The inner face of metal base is connected with the metal connecting pipe that curves 90 degree; The lower end of metal connecting pipe is fixed in the metal base, and the other end of metal connecting pipe and the metal half cup body that is arranged on the metal base center are with glass and pass the ceramic ring that is fixed on metal half cup body center and the inner glass that is provided with of metal half cup body and the ceramic cap that is fixed in the middle of the glass is connected; The upper end is provided with the metal oil filler pipe in the inner glass of metal half cup body, and glass the inner also is provided with electric conductor film, protective insulating film and central metal diaphragm successively; Be provided with silicone oil in the middle of isolation diaphragm, metal connecting pipe, metal oil filler pipe, ceramic cap, the central metal diaphragm.
The ceramic cap of the utility model, ceramic ring; Be integral with metal half cup body, metal connecting pipe, glass sintering; Its objective is to make between pedestal, metal connecting pipe and the metal half cup body to reach insulation, and make between pedestal, metal connecting pipe and the electric conductor film and reach insulation.
Described metal oil filler pipe is integral with metal half cup body, glass sintering, its objective is to make between metal oil filler pipe and the metal half cup body to reach insulation, is that the passage of filling silicone oil is again to connect the guide line as the electric conductor film with the electric conductor symphysis simultaneously.
The utility model is to utilize existing known technology that glass and half cup body and ceramic ring, metal oil filler pipe, metal connecting pipe, ceramic cap are sintered into one, and grinds a cancave cambered surface to the glass in the metal half cup body, the metal oil filler pipe in the glass, ceramic cap through grinding then.Then plating the electric conductor film at cancave cambered surface fuses electric conductor film and metal oil filler pipe and plates protective insulating film at last.
The utility model utilization welding is welded into one isolation diaphragm, protective ring, metal base, metal connecting pipe.Be welded into one the metal half cup body on the circumference of central metal diaphragm and both sides.Introducing silicone oil through the metal oil filler pipe on both sides again makes silicone oil be full of whole room through the metal connecting pipe.
During work when external pressure is applied to isolation diaphragm; Pass to the central metal diaphragm to pressure through silicone oil; The central metal diaphragm will produce certain displacement; Therefore the electric capacity that is made up of the electric conductor film on central metal diaphragm and its both sides will change, and electric capacitance change offers circuit through central metal diaphragm extension line and electric conductor film via the oil filler pipe extension line.The variation of final external pressure converts capacitance variation into.Be converted into the output signal of standard again through circuit.
The beneficial effect of the utility model is: it is anti-interference that the utility model has solved existing differential pressure transmitter; Measuring accuracy and all relatively poor problem of stability; Utilize insulating material the sensing element central metal diaphragm of metal capacitance differential pressure transmitter and the metal shell of electric conductor film pole plate and capacitance differential pressure cell to be isolated suspension structure like pottery, glass etc.; Played the isolation action of electric signals, when on the isolation diaphragm that is affacted the differential capacitor bellows by measuring pressure respectively, through the silicone oil in the bellows chamber; Be delivered to central metal diaphragm both sides with liquid pressure transmission form, both kept the constant of differential capacitor bellows principle of work.Therefore, the utility model has solved sensing element and the metal shell of capacitance differential pressure cell and the problem that the earth need be isolated suspension of capacitance differential pressure cell, has improved the antijamming capability and the stability of capacitance differential pressure cell greatly.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 is the topology view of the utility model full section.
Fig. 2 is the A-A zoomed-in view of the utility model Fig. 1.
Among the figure: 1,3 metal oil filler pipe extension lines, 2,4 metal oil filler pipes, 5,18 metal half cup bodies, 6,19 glass; 7,20 ceramic caps, 8,21 ceramic rings, 9,22 metal connecting pipes, 10 metal bases; 11,12,16,23,24,25,29 circumferential welds, 13,26 silicone oil, 14,27 isolation diaphragms, 15,28 protective rings; 17 central metal diaphragm extension lines, 30 central metal diaphragms, 31,34 plating electric conductor films, 32,33 plating protective insulating films.
Embodiment
Embodiment 1:
A metal base 10 is arranged; The lower end of metal base 10 is provided with isolation diaphragm 14 (27) and protective ring 15 (28); The inner face of metal base 10 is connected with the metal connecting pipe 9 (22) that curves 90 degree; The lower end of metal connecting pipe 9 (22) is fixed in the metal base 10, and the other end of metal connecting pipe 9 (22) passes the ceramic ring 8 (21) that is fixed on metal half cup body 5 (18) centers and metal half cup body 5 (18) the inner glass 6 (19) that are provided with and the ceramic caps 7 (21) that are fixed in the middle of the glass 6 (19) are connected; The upper end is provided with metal oil filler pipe 2 (4) in metal half cup body 5 (18) the inner glass 6 (19), and glass 6 (19) the inners also are provided with electric conductor film 31 (34), protective insulating film 32 (33) and central metal diaphragm 30 successively; Be provided with silicone oil 13 (26) in the middle of isolation diaphragm 14 (27), metal connecting pipe 9 (22), metal oil filler pipe 2 (4), ceramic cap 7 (21), the central metal diaphragm 30.
Claims (2)
1. capacitor plate suspension structure that differential metal capacitance bellows is novel; It is characterized in that: a metal base is arranged; The lower end of metal base is provided with isolation diaphragm and protective ring; The inner face of metal base is connected with the metal connecting pipe that curves 90 degree; The lower end of metal connecting pipe is fixed in the metal base, and the other end of metal connecting pipe and the metal half cup body that is arranged on the metal base center are with glass and pass the ceramic ring that is fixed on metal half cup body center and the inner glass that is provided with of metal half cup body and the ceramic cap that is fixed in the middle of the glass is connected; The upper end is provided with the metal oil filler pipe in the inner glass of metal half cup body, and glass the inner also is provided with electric conductor film, protective insulating film and central metal diaphragm successively; Be provided with silicone oil in the middle of isolation diaphragm, metal connecting pipe, metal oil filler pipe, ceramic cap, the central metal diaphragm.
2. according to claim 1 novel capacitor plate suspension structure of differential metal capacitance bellows, it is characterized in that: described ceramic cap, ceramic ring are integral with metal half cup body, metal connecting pipe, glass sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200665374U CN202453136U (en) | 2012-02-22 | 2012-02-22 | Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200665374U CN202453136U (en) | 2012-02-22 | 2012-02-22 | Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453136U true CN202453136U (en) | 2012-09-26 |
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ID=46868991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200665374U Withdrawn - After Issue CN202453136U (en) | 2012-02-22 | 2012-02-22 | Novel capacitance pole plate suspension structure of differential metal capacitance diaphragm capsule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453136U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292947A (en) * | 2012-02-22 | 2013-09-11 | 福建上润精密仪器有限公司 | Novel capacitance plate suspension structure of differential motion metal capacitance diaphragm capsule |
| CN110553763A (en) * | 2019-09-10 | 2019-12-10 | 广州敏华仪器仪表有限公司 | Coplanar suspension type full-isolation sensor |
-
2012
- 2012-02-22 CN CN2012200665374U patent/CN202453136U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292947A (en) * | 2012-02-22 | 2013-09-11 | 福建上润精密仪器有限公司 | Novel capacitance plate suspension structure of differential motion metal capacitance diaphragm capsule |
| CN103292947B (en) * | 2012-02-22 | 2016-02-03 | 福建上润精密仪器有限公司 | A kind of capacitor plate suspension structure of differential metal capacitance membrane box |
| CN110553763A (en) * | 2019-09-10 | 2019-12-10 | 广州敏华仪器仪表有限公司 | Coplanar suspension type full-isolation sensor |
| CN110553763B (en) * | 2019-09-10 | 2021-03-19 | 广州敏华仪器仪表有限公司 | Coplanar suspension type full-isolation sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120926 Effective date of abandoning: 20160203 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |