Today, I will introduce a national invention authorized patent-an explosion-proof wireless pressure transmitter. The patent was applied for by Chengdu Zhongshan Technology Co., Ltd., and the authorization was announced on March 8, 2017.
Content descriptionThe utility model relates to the field of pressure transmitters, in particular to an explosion-proof wireless pressure transmitter.
Background of the inventionDuring the use of pressure transmitters, its safety is very important, especially in the environment of measuring dangerous media, the safety performance of the instrument must be paid attention to. In the design of pressure transmitters, the design of its wiring and electronic component circuits is the key focus of explosion-proof design. The existing explosion-proof wireless pressure transmitter uses a modular design for the signal processing module and the wiring and electronic circuits are arranged in separate gas chambers. However, the wiring and electronic circuits are arranged in separate air chambers. In different air chambers, the air chamber has a sealing problem due to the wiring arrangement.
Summary of the inventionIn order to solve the above technical problems, the utility model provides an explosion-proof wireless pressure transmitter, which has a high safety sealing coefficient.
The technical solution adopted by the utility model to solve the above problems is: an explosion-proof wireless pressure transmitter, including a pressure sensor and a signal processing module for processing the output signal of the pressure sensor, and the signal processing module includes a signal conversion unit and a signal The 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. The same side walls of the first air chamber and the second air chamber are provided with There is a perforation, a conductive connecting strip is arranged in the perforation, an insulating sealing layer is arranged between the connecting strip and the hole wall of the perforation, and both ends of the connecting strip are respectively connected to the signal conversion unit and the signal measurement output unit through wires , 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, namely, perforation is made on the same side wall of the first air chamber and the second air chamber, and connecting strips are arranged in the perforations, and the signal conversion unit and signal measurement output are realized by the connecting strips. For the signal connection of the unit, the connecting strip is made of wire material, and the side wall is generally made of metal material. The insulating sealing layer separates the connecting strip from the perforated hole wall, which not only enhances the air tightness between the air chambers, but also avoids the side walls. The electrical conductivity of the wall affects the signal between the signal conversion unit and the signal measurement output unit.
The signal conversion unit and the signal measurement output unit are respectively connected to the connection bar through the telecommunications connection. The connection method is generally electric welding. The two ends of the connection bar should not be located in the perforation. If the two ends of the connection bar are located in the perforation, connect the wiring and When connecting the strip, the solder tends to damage the insulating and sealing layer, thereby destroying the insulating and sealing performance of the insulating and sealing layer. With this structure, although the thickness of the insulating and sealing layer is set to be large enough to avoid damage, the thickness of the insulating and sealing layer is too thick At this time, although the insulation will not be affected, but the thickness is too thick and the sealing is too poor, so the two ends of the connecting strip are respectively located in the first air chamber and the second air chamber, which is also convenient for welding the wires.
Preferably, in order to facilitate the welding of the wires, both ends of the connecting strip are provided with grooves, and the wires are clamped in the grooves. The connecting strip is a copper strip. Both sides of the same side wall of the first air chamber and the second air chamber are provided with wiring fixing members.
In summary, the beneficial effects of the present utility model are: in the present utility model, the first air chamber and the second air chamber are perforated on the same side wall, and connecting strips are arranged in the perforations, and the connecting strips are used to realize the signal conversion unit and signal measurement output. The signal connection of the unit has a high safety sealing factor.
Active Matrix Oled,Oled Display Module Active Matrix,Active Matrix Organic Light Emitting Diode,Oled Lcd Display Modules
ESEN Optoelectronics Technology Co., Ltd, , https://www.esenoptoelectronics.com