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Anti-breakage differential pressure transmitter

A differential pressure transmitter and transmitter technology, used in instruments, measuring fluid pressure, pressure difference measurement between multiple valves, etc., can solve problems such as wear and tear of connecting lines, improve service life and improve sealing , the effect of easy threading

Inactive Publication Date: 2019-12-20
XIAN HUAHENG INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the connecting wire of the differential pressure transmitter on the market and the wiring hole of the junction box are generally rigidly connected, and the friction between the connecting wire and the junction box will cause the wear of the connecting wire, so it is necessary to improve its design

Method used

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Embodiment approach

[0023] As a preferred embodiment of the present invention, the cable fixing plate 3 , the connecting pipe 4 and the inner pipe 3 are arranged concentrically.

[0024] As a preferred embodiment of the present invention, the sealing ring 9 is made of silicone material, and is vulcanized as one piece with the inner tube 6 .

[0025] As a preferred embodiment of the present invention, the inner tube 6 is made of soft rubber material, and is integrated with the fixing plate 3 .

[0026] As a preferred embodiment of the present invention, the front end of the sealing ring 9 is an inclined plane, and the angle of the inclined plane is 30-45 degrees.

[0027] As a preferred embodiment of the present invention, the number of the spring columns 8 is four, and they are symmetrically arranged in pairs on the outer surface of the inner tube 6 at equal intervals.

[0028] When this anti-break differential pressure transmitter is used, a cable fixing plate is arranged on the rear side of th...

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Abstract

The invention provides an anti-breakage differential pressure transmitter. The anti-breakage differential pressure transmitter comprises a transmitter body, a terminal box and a cable fixing plate, wherein the terminal box is fixedly connected at the upper end of the transmitter body, the cable fixing plate is connected at the rear of the transmitter body through a fixing bolt, and a wiring tube is fixed at rear of the fixing plate. When the anti-breakage differential pressure transmitter is in use, the cable fixing plate is arranged at rear of the terminal box, a connecting tube is arranged at rear of the cable fixing plate 3, and the connecting tube is internally provided with an inner tube connected through a spring column. According to the design, a connecting line penetrates a wire cavity in the inner tube, and is not squeezed hardly when swinging due to existence of the spring column 8, so that the connecting line is protected and is prolonged in service life; a sealing ring is arranged at the front inside the inner tube, therefore, the terminal box and the exterior are further sealed; and the front end of the sealing ring is an oblique side, facilitating threading.

Description

technical field [0001] The invention relates to the technical field of transmitters, in particular to an anti-breakage differential pressure transmitter. Background technique [0002] The differential pressure transmitter is a transmitter that measures the pressure difference between the two ends of the transmitter, and outputs a standard signal (such as 4~20mA, 0~5V). Differential pressure transmitters are different from ordinary pressure transmitters in that they all have two pressure ports. Differential pressure transmitters are generally divided into positive pressure terminals and negative pressure terminals. The pressure at the end should be greater than the pressure at the negative pressure section to be measured. [0003] At present, the connecting wires of differential pressure transmitters on the market and the wiring holes of the junction box are generally rigidly connected. The friction between the connecting wire and the junction box will cause the wear of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00G01L13/00
CPCG01L13/00G01L19/0061
Inventor 刘亚青
Owner XIAN HUAHENG INSTR CO LTD
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