Household Electrical Appliances gree , https://www.greegroups.com
Description
The utility model relates to the field of pressure transmitters, in particular to an explosion-proof type wireless pressure transmitter.
Background of the invention
The safety of the pressure transmitter is very important during its use. Especially in the environment where the dangerous medium is measured, the safety performance of the instrument must be paid attention to. In the design of pressure transmitters, the design of wiring and electronic component wiring is the focus of explosion-proof design. The method of the conventional explosion-proof wireless pressure transmitter, which solve the above problem is to use signal processing module and a modular design and wiring electronic circuit disposed in separate gas chamber, however, the wiring to the electronic circuit provided In different air chambers, there is a sealing problem in the air chamber due to the arrangement of the wiring.
Summary of the invention
In order to solve the above technical problems, the utility model provides an explosion-proof wireless pressure transmitter with high safety sealing coefficient.
The technical solution adopted by the utility model to solve the above problems is: an explosion-proof wireless pressure transmitter comprising a pressure sensor and a signal processing module for processing a pressure sensor output signal, the signal processing module comprising a signal conversion unit and a signal a measurement output unit, the signal conversion unit and the signal measurement output unit are respectively located in two adjacent first air chambers and second air chambers, and the first air chamber and the second air chamber are provided with the same side wall There is a perforation, an electrically conductive connecting strip is disposed in the perforation, an insulating sealing layer is disposed between the connecting strip and the perforated hole wall, and two ends of the connecting strip are respectively connected to the signal conversion unit and the signal measuring output unit through the wiring The two ends of the connecting strip are respectively located in the first air chamber and the second air chamber. The utility model is improved on the basis of the prior art, that is, the same side wall of the first air chamber and the second air chamber is perforated, a connecting strip is arranged in the perforation, and the signal conversion unit and the signal measurement output are realized by the connecting strip. The signal connection of the unit, the connecting strip is the wire material, and the side wall is generally made of a metal material, and the insulating sealing layer separates the connecting strip from the perforated hole wall, thereby enhancing the sealing between the air chamber and avoiding the side. The effect of the conductivity of the wall on the signal between the signal conversion unit and the signal measurement output unit. 
Figure is a schematic view of the structure of the utility model
The signal conversion unit and the signal measurement output unit respectively realize the telecommunication connection through the connection and the connection bar, and the connection method generally adopts the electric welding method, and the two ends of the connection bar should not be located in the perforation, if both ends of the connection bar are located in the perforation, the electric connection connection is When the connecting strip is used, the solder is liable to damage the insulating sealing layer, thereby damaging the insulating sealing performance of the insulating sealing layer. With this structure, although the thickness of the insulating sealing layer is set large enough to avoid damage, the thickness of the insulating sealing layer is too thick. At the same time, although the insulation is not affected, the thickness is too thick and the sealing property is too poor. Therefore, the two ends of the connecting strip are respectively located in the first air chamber and the second air chamber, and the welding of the wiring is also facilitated.
Preferably, in order to facilitate the welding of the wires, both ends of the connecting strip are provided with grooves, and the wires are caught in the grooves. The connecting strip is a copper strip. A wiring fixing member is disposed on both sides of the same sidewall of the first air chamber and the second air chamber.
In summary, the utility model has the beneficial effects that the utility model has perforated the same side wall of the first air chamber and the second air chamber, and provides a connecting strip in the perforation, and realizes the signal conversion unit and the signal measurement output by using the connecting strip. The signal connection of the unit has a high safety sealing factor.
Explosion-proof wireless pressure transmitter
There is no limit to creativity, and the instrument is invented. Today we introduce a national invention patent for authorization - an explosion-proof wireless pressure transmitter. The patent was filed by Chengdu Zhongshan Technology Co., Ltd. and was authorized to be announced on March 8, 2017.