[New patent introduction] A high-pressure transmitter

Today, I will introduce a national invention authorized patent-a high-pressure transmitter. The patent was applied for by Anhui Hehe Automation Technology Co., Ltd., and the authorization was announced on December 22, 2017.

Content description

The invention relates to the technical field of liquid level detection, in particular to a high-pressure transmitter.

Background of the invention

In the production equipment of fiber, rubber, plastic and other products, it is usually necessary to use a pressure transmitter to measure the pressure of the viscous fluid, including differential pressure, absolute pressure and surface pressure, so as to monitor and control the parameters of the production process. Control to keep it within the scope of safe production. In the manufacturing process of the current pressure transmitter, the sealing performance is poor, the structural connection is poor, and the pressure diaphragm can withstand a low pressure value. When the full scale is reached, the pressure transmitter will be destroyed. The maintenance and calibration cost is expensive, and it seriously affects the production of fiber, rubber, plastic and other products.

Summary of the invention

The purpose of the present invention is to provide a high-pressure transmitter to solve the above-mentioned background art problems.

In order to achieve the above objectives, the present invention provides the following technical solutions: a high-pressure transmitter, including a stainless steel housing, a pressure diaphragm, a pressure sensing probe, a pressure sensitive element, a pressure tap and a digital display, the front end of the stainless steel housing is installed with The front cover is fixed by the fixing screws, the front end of the stainless steel housing is equipped with a digital display, and the digital display is connected to the chipset. The back end of the stainless steel housing is welded with a back cover through the laser cold welding process; the bottom of the stainless steel housing is equipped with a chipset and chipset. The bottom end is connected to the alloy aviation plug, the alloy aviation plug is connected to the electronic circuit board, and the electronic circuit board is installed in the pressure tapping connector; the bottom end of the electronic circuit board is connected to the pressure-sensitive element, which is embedded in the pressure diaphragm, and the pressure-sensitive element is embedded in the pressure diaphragm. A pressure-sensitive probe is installed at the bottom end of the pressure-taking connector, a pressure-inducing hole is arranged inside the pressure-sensitive probe, the bottom end of the pressure-sensitive probe is connected with a threaded rod, and a pressure-sensitive elastic element is arranged inside the bottom of the threaded rod.

There is a glass window in the middle of the front cover. An input adjustment key is installed on the circuit between the chipset and the digital display. The input adjustment key is installed on the top of the stainless steel housing, and the input adjustment key plastic cover is arranged above the input adjustment key. The upper end of the pressure tapping joint is fixed at the middle of the bottom end of the stainless steel shell by a locking screw, and a sealing ring is arranged between the stainless steel shell and the pressure tapping joint. A cable interface is provided on the upper side of the stainless steel shell. A nameplate label is riveted on the bottom side of the stainless steel housing. The upper end of the pressure-taking joint and the middle of the bottom end of the stainless steel shell are welded by a laser cold welding process. A measuring element cover plate is installed on the front side of the bottom end of the stainless steel housing, and a measuring element is installed on the stainless steel housing in the measuring element cover plate. The pressure-taking joint and the pressure-sensitive probe are welded by a laser cold welding process, and the pressure diaphragm in the pressure-taking joint is a thickened diaphragm made of stainless steel or tantalum.

Compared with the prior art, the beneficial effects of the present invention are: a high-pressure transmitter with compact structure, welded by laser cold welding process, good sealing performance, stable and reliable connection, and pressure-sensitive probe to measure the pressure and level of viscous fluid For measurement, the pressure-sensitive elastic element and the pressure hole realize a wide range of pressure sensing and solve the problem of scaling and clogging inside the threaded rod and the pressure-sensitive probe. It is easy to clean and hygienic. The thickened diaphragm made of stainless steel or tantalum can be used Withstand four times the pressure to achieve high pressure measurement.

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