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High-pressure-impact-prevention and antifreezing device of transmitter diaphragm

A technology of antifreeze device and transmitter, which is applied in the direction of measuring device, measuring fluid pressure, instruments, etc., can solve the problems of affecting the safe operation of the process, measuring display bad spots, and measuring diaphragm damage, etc., and achieves ingenious and compact structural design, and Ingenious, the effect of ensuring stable operation

Active Publication Date: 2018-06-12
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, instrument measurement transmitters are widely used in production process measurement systems. It is a signal conversion instrument that converts physical quantities such as pressure, flow, liquid level, etc. into electricity and sends them to the control system. From the perspective of application performance, pressure The transmitter is often due to sudden changes in working conditions, or the meter installed at the outlet of the water pump or oil pump. At the moment when the pump suddenly starts, the medium pressure suddenly rises beyond the measurement range of the transmitter, which can easily lead to damage to the measuring diaphragm. Dead pixels are displayed on the DCS screen, seriously affecting the safe operation of the entire process
In extremely cold weather, when the measuring pipeline of the pressure transmitter installed outdoors is at sub-zero temperature, the fault phenomenon of diaphragm freezing will also occur, which directly leads to the failure of the measurement display.

Method used

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  • High-pressure-impact-prevention and antifreezing device of transmitter diaphragm
  • High-pressure-impact-prevention and antifreezing device of transmitter diaphragm
  • High-pressure-impact-prevention and antifreezing device of transmitter diaphragm

Examples

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Embodiment 1

[0021] How it works: see figure 1 ,Such as figure 2 As shown, the anti-shock component 33 and the anti-freeze component 32 are sequentially installed on the measuring pipeline of the transmitter.

[0022] Such as figure 1 As shown, the measuring medium pipeline is connected to the pressure guide pipe joint 1, and the transmitter interface 17 is connected to the transmitter thread. 9.5 kg action, a little lower than the upper line of the transmitter's range, in order to protect the transmitter's measuring diaphragm, and close the normal measuring channel in time) under normal pressure measurement, that is, when the pressure of the measured medium is within the measuring range of the transmitter, at this time The pressure of the medium to be measured is not enough to overcome the stretching force of the anti-compression spring. The medium passes through the measuring pipeline 29 in the anti-shock device, then through the V-shaped cavity inside the S-shaped medium circulatio...

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PUM

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Abstract

The invention relates to a high-pressure-impact-prevention and antifreezing device of a transmitter diaphragm. The device comprises an antifreezing component and an impact prevention component. The antifreezing component and the impact prevention component are connected through a connection pipe and a joint. The impact prevention component comprises an impact prevention device shell, a guiding pressing pipeline, a guiding pressing casing pipe, a thrust conversion mechanism, a high and low pressure switching mechanism and a position detection mechanism, wherein the guiding pressing pipeline, the guiding pressing casing pipe, the thrust conversion mechanism, the high and low pressure switching mechanism and the position detection mechanism are arranged in the shell. The guiding pressing pipeline is arranged in the guiding pressing casing pipe. The upper portion of the thrust conversion mechanism is connected to the position detection mechanism, and a lower portion is connected to the high and low pressure switching mechanism. The structure of the device is simple and operation is convenient. The cut-off effect of a pipeline can be normally measured when there is high pressure and thesafety of the transmitter diaphragm is guaranteed.

Description

technical field [0001] The invention relates to a device, in particular to a high pressure impact and antifreeze device for a diaphragm of a transmitter, which belongs to the technical field of mechanical and electrical instrument control devices. Background technique [0002] At present, instrument measurement transmitters are widely used in production process measurement systems. It is a signal conversion instrument that converts physical quantities such as pressure, flow, liquid level, etc. into electricity and sends them to the control system. From the perspective of application performance, pressure The transmitter is often due to sudden changes in working conditions, or the meter installed at the outlet of the water pump or oil pump. At the moment when the pump suddenly starts, the medium pressure suddenly rises beyond the measurement range of the transmitter, which can easily lead to damage to the measuring diaphragm. The dead pixels are displayed on the DCS screen, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/06
CPCG01L19/0618
Inventor 成涛陆洪波卞祖亮
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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