Pressure transmitter

A transmitter and pressure technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problems of low insulation resistance and electric strength of products, failure to meet requirements, complex structure, etc., achieve simple structure, improve stability and Effect of improving reliability and EMC performance

Active Publication Date: 2013-11-27
SHANGHAI JUNLE REFRIGERATION CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this connection packaging structure has high cost, complex structure and large volume
In addition, subject to EMC requirements, the shell is generally connected to the shell through a capacitor inside, resulting in low insulation resistance and electrical strength of the product, which is only suitable for general use occasions, and is far below the standard in industries such as air conditioning and refrigeration. Require

Method used

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Embodiment Construction

[0035] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0036] see figure 1 , which shows a cross-sectional view of the pressure transmitter in this example. It can be seen from the figure that the pressure transmitter is mainly composed of a joint part 1, a rectangular ring 2, a housing 3, a sensitive element 4, an insulating diaphragm 5, a sealing ring 6, a cable 7, a metal shield 8, an insulating gasket 9, a circuit Board 10, electrical insert 11 and epoxy resin 12.

[0037] In this pressure transmitter, the joint part 1 and the electrical plug-in 11 are respectively placed on the casing 3 to constitute the main structure of the entire pressure transmitter, and the electrical components such as the sensitive element 4 and the circuit board 10 are placed through the corresponding sealing and isola...

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Abstract

The invention discloses a pressure transmitter. A contactor component of a packaging structure of the pressure transmitter is connected with a boiler or a pressure container or a pressure pipeline to provide a pressure source for a sensitive element. According to the pressure transmitter, an inner metal shielding case structure is adopted to shield a circuit board, EMC performance is increased, and insulation resistance and electric strength of products are greatly improved; meanwhile, a split type riveting connection structure is adopted to package the contactor component and an outer shell, the outer shell and an electric plug-in are connected through a riveting connection mode, and a corresponding seal ring, the sensitive element and the circuit board are installed in a shell body. According to the pressure transmitter, due to the fact that the simple package structure is adopted, the structure is simple, processing adjustment is convenient to achieve, and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a refrigeration equipment technology, in particular to a pressure transmitter. Background technique [0002] At present, pressure transmitter packages based on sensitive components such as ceramic sensors or diffused silicon pressure sensors mainly adopt an integrated structure. A screw is used to press the sensitive component on the lower side of the inner cavity, and O is used between the sensitive component and the inner cavity. The inner cavity is connected to the boiler, pressure vessel or pressure pipeline through an interface; the other end transmits the conditioned and amplified signal through the connector; between the connector and the package shell, silicone or ring is used. Oxygen and other methods are connected and sealed. However, this connection packaging structure has high cost, complicated structure and large volume. In addition, subject to EMC requirements, the shell is generally connected to the shell throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00
Inventor 冯志军补灵杰叶国兴
Owner SHANGHAI JUNLE REFRIGERATION CONTROL
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