CN203837866U - Multi-seal type pressure sensor - Google Patents

Multi-seal type pressure sensor Download PDF

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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
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CN
China
Prior art keywords
pressure
ceramic diaphragm
pressure interface
seal
thick
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Active
Application number
CN201420253801.4U
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Chinese (zh)
Inventor
栾柳阳
姚琴斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU MATCH-WELL PRESSURE CONTROL TECHNOLOGY Co Ltd
Original Assignee
CHANGZHOU MATCH-WELL PRESSURE CONTROL TECHNOLOGY Co Ltd
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Priority to CN201420253801.4U priority Critical patent/CN203837866U/en
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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

Many closed types pressure transducer
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.
CN201420253801.4U 2014-05-16 2014-05-16 Multi-seal type pressure sensor Active CN203837866U (en)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420253801.4U Active 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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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