CN203837866U - Multi-seal type pressure sensor - Google Patents
Multi-seal type pressure sensor Download PDFInfo
- Publication number
- CN203837866U CN203837866U CN201420253801.4U CN201420253801U CN203837866U CN 203837866 U CN203837866 U CN 203837866U CN 201420253801 U CN201420253801 U CN 201420253801U CN 203837866 U CN203837866 U CN 203837866U
- Authority
- CN
- China
- Prior art keywords
- pressure
- ceramic diaphragm
- pressure interface
- seal
- thick
- 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
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a multi-seal type pressure sensor. The multi-seal type pressure sensor comprises a pressure interface (1), a ceramic diaphragm (6), a thick-film resistor and a socket connector housing (3) with a circuit output therein; the thick-film resistor is printed on a back face of the ceramic diaphragm (6) and is connected to form a Wheatstone bridge; and the multi-seal type pressure sensor is characterized in that the ceramic diaphragm (6) is fixed to an inner chamber of the pressure interface (1) through a nylon stop collar (2) and a hole-type stop collar (4), two seal rings (5) are installed in the pressure interface (1) and on a front face of the ceramic diaphragm (6), and a third seal ring (7) is disposed between an upper part of the pressure interface (1) and the socket connector housing (3). Through arrangement of the multiple seal rings, the seal effect of a pressure controller is greatly improved, and a chip main body of the pressure controller is protected well.
Description
Technical field
The utility model relates to a kind of for the pressure controlled electronic pressure controller of convertible frequency air-conditioner, specifically, relates to a kind of many closed types pressure transducer.
Background technology
In order to adapt to the development of refrigeration industry; many refrigeration enterprise has all adopted converter technique; in order to solve converter technique, need to adopt electronic signal formula pressure protect controller; this pressure transducer is transformed into voltage or the such electronic signal of electric current by the mechanical signal of pressure; electronic signal passes to electronic equipment, and then in Computer display force value.But there is the undesirable shortcoming of sealing effectiveness in existing electronic pressure transmitter, easily causes chip circuit fault.
Summary of the invention
The purpose of this utility model is to provide a kind of many closed types pressure transducer of good seal performance.
The technical scheme that realizes the utility model object is: a kind of many closed types pressure transducer, comprise pressure interface, ceramic diaphragm, thick-film resistor and in have the output connector shell of circuit, thick-film resistor is printed on the back side of ceramic diaphragm, and connect into a Wheatstone bridge, ceramic diaphragm is fixed on the inner chamber of pressure interface by nylon back-up ring and pass back-up ring, pressure interface is inner is provided with two seals circle with the front of ceramic diaphragm, is provided with the 3rd O-ring seal between pressure interface top and connector housings.
Further, described pressure interface is pipe thread rapid-acting coupling made in Great Britain or copper pipe welded structure.
Adopted after technique scheme, the utlity model has following beneficial effect:
1, pressure interface is inner is provided with two seals circle with the front of ceramic diaphragm; between pressure interface top and connector housings, be provided with the 3rd O-ring seal; by the setting of multiple-sealed circle, greatly improve the sealing effectiveness of pressure controller, protected better the chip body of pressure controller.
2, erosion-resisting ceramic pressure sensor does not have the transmission of liquid, pressure acts directly on the front surface of ceramic diaphragm, make diaphragm produce small deformation, thick-film resistor is printed on the back side of ceramic diaphragm, connect into a Wheatstone bridge (closing bridge), due to the piezoresistive effect of voltage dependent resistor (VDR), the voltage signal that can make electric bridge produce a highly linear being directly proportional to pressure, also be directly proportional to driving voltage.Pottery be a kind of generally acknowledged high resiliency, anticorrosive, resistance to wear, the material of shock resistance and vibration.The operating temperature range that the thermal stability property of pottery and its thick-film resistor can make it is up to-40～135 ℃, and has high precision, the high stability of measurement.
3, pressure interface adopts pipe thread rapid-acting coupling made in Great Britain or copper pipe welded structure, easy to use, flexible for installation, without special installation, fixes.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of many closed types of the utility model pressure controller.
In figure, 1, pressure interface, 2, nylon back-up ring, 3, shell, 4, pass back-up ring, 5, O-ring seal, 6, ceramic diaphragm, the 7, the 3rd O-ring seal.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below,
As shown in Figure 1, a kind of many closed types pressure transducer, comprise pressure interface 1, ceramic diaphragm 6, thick-film resistor and in have the output connector shell 3 of circuit, thick-film resistor is printed on the back side of ceramic diaphragm 6, and connect into a Wheatstone bridge, ceramic diaphragm 6 is fixed on the inner chamber of pressure interface 1 by nylon back-up ring 2 and pass back-up ring 4, pressure interface 1 is inner is provided with two seals circle 5 with the front of ceramic diaphragm 6, is provided with the 3rd O-ring seal 7 between pressure interface 1 top and connector housings 3.
As shown in Figure 1, described pressure interface 1 is pipe thread rapid-acting coupling made in Great Britain or copper pipe welded structure.Adopt this structure not only easy to use flexible for installation, and without special fixing.
Principle of work of the present utility model is as follows: shell is connected with pressure system, pressure acts directly on the front surface of ceramic diaphragm, make diaphragm produce small deformation, thick-film resistor is printed on the back side of ceramic diaphragm, connect into a Wheatstone bridge (closing bridge), due to the piezoresistive effect of voltage dependent resistor (VDR), the voltage signal that makes electric bridge produce a highly linear being directly proportional to pressure, also be directly proportional to driving voltage.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. closed type pressure transducer more than a kind, comprise pressure interface (1), ceramic diaphragm (6), thick-film resistor and in have the output connector shell (3) of circuit, thick-film resistor is printed on the back side of ceramic diaphragm (6), and connect into a Wheatstone bridge, it is characterized in that: ceramic diaphragm (6) is fixed on the inner chamber of pressure interface (1) by nylon back-up ring (2) and pass back-up ring (4), pressure interface (1) is inner is provided with two seals circle (5) with the front of ceramic diaphragm (6), between pressure interface (1) top and connector housings (3), be provided with the 3rd O-ring seal (7).
2. many closed types pressure transducer according to claim 1, is characterized in that: described pressure interface (1) is pipe thread rapid-acting coupling made in Great Britain or copper pipe welded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253801.4U CN203837866U (en) | 2014-05-16 | 2014-05-16 | Multi-seal type pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253801.4U CN203837866U (en) | 2014-05-16 | 2014-05-16 | Multi-seal type pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837866U true CN203837866U (en) | 2014-09-17 |
Family
ID=51515691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420253801.4U Expired - Lifetime CN203837866U (en) | 2014-05-16 | 2014-05-16 | Multi-seal type pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203837866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316255A (en) * | 2014-10-14 | 2015-01-28 | 秦川机床集团宝鸡仪表有限公司 | Loading limit protection device of pressure sensor |
| CN107687915A (en) * | 2016-08-03 | 2018-02-13 | 麦克罗特尔电子技术股份公司 | The piezoresistive pressure sensor of calibrating resistor provided with biasing |
-
2014
- 2014-05-16 CN CN201420253801.4U patent/CN203837866U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316255A (en) * | 2014-10-14 | 2015-01-28 | 秦川机床集团宝鸡仪表有限公司 | Loading limit protection device of pressure sensor |
| CN107687915A (en) * | 2016-08-03 | 2018-02-13 | 麦克罗特尔电子技术股份公司 | The piezoresistive pressure sensor of calibrating resistor provided with biasing |
| CN107687915B (en) * | 2016-08-03 | 2021-11-23 | 科莱特微电股份公司 | Piezoresistive pressure sensor provided with an offset calibration resistor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |