An ultra-high voltage resistant sputtering film pressure transmitter and its manufacturing method
A technology of sputtering thin film and ultra-high voltage, which is applied in the direction of measuring fluid pressure, instruments, force/torque/power measuring instruments, etc. Improve the connection strength and sealing, improve the ability to withstand voltage, and reduce the effect of high voltage shock
Active Publication Date: 2022-06-24
NINGBO CRRC TIMES TRANSDUCER TECH CO LTD
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Problems solved by technology
The principle of the sputtering thin film pressure core is to coat the surface of the stainless steel core. Due to the limitation of the structure and process, it is very difficult to increase the withstand voltage limit.
If you want to greatly improve its withstand voltage performance, it will inevitably affect its measurement accuracy, make it lose the advantages of high measurement accuracy, and affect the overall stability and reliability of the product.
This problem is also the main reason and technical bottleneck of sputtering thin film pressure transmitters that cannot be widely applied.
[0003] The pressure core of the existing product is directly welded to the head of the shell, which is susceptible to great stress, and the thread pre-tightening force during installation is likely to affect the measurement accuracy of the pressure core. The stress cannot be released during long-term use, resulting in pressure signal drift and stable denaturation of the product. Difference
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[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the invention is not limited to these embodiments.
[0036] like Figure 1-2 As shown, an ultra-high voltage resistant sputtering thin film pressure transmitter includes:
[0037] The joint 100, the joint 100 is mainly used to protect its internal components and to install the pressure transmitter on other components.
[0038] The sintered base 200, the sintered base 200 is installed in the joint 100, and a buffer is provided between the bottom surface of the sintered base 200 and the joint 100, in the case of violent movement, there will be a small amount of microscopic formation between the sintered base 200 and the joint 100. The relative displacement of the sintered base 200 and the joint 100 is avoided, the installation stress is avoided to be transmitted to the pressure core 500, and the tensile st...
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The invention discloses an ultra-high voltage resistant sputtering thin-film pressure transmitter and a manufacturing method, which solves the problems in the prior art that the insulation withstand voltage of the pressure transmitter is generally not high and the welding of the pressure core is easy to generate stress, which leads to poor product stability. Question, this ultra-high voltage resistant sputtering film pressure transmitter includes joints, sintered bases, welding seats, pressure cores and circuit boards, and an insulating seat is set between the welding seat and the sintered base. The insulating seat includes ceramics Ring and sintered glass, use ceramic ring and sintered glass to insulate and seal the welding seat, so as to improve the overall withstand voltage capability of the transmitter without affecting the measurement accuracy of the pressure core, and between the sintered base and the joint O-shaped rubber rings are arranged between them. Using O-shaped rubber rings can not only provide shock absorption performance for the sintered base, but also eliminate the stress effect on the pressure core during installation, so as to ensure the measurement accuracy of the pressure core.
Description
technical field [0001] The invention relates to the technical field of pressure transmitters, in particular to an ultra-high voltage resistant sputtering thin film pressure transmitter and a manufacturing method. Background technique [0002] The insulation withstand voltage of the existing sputtering film core pressure transmitter is generally not high, about 300VAC. The principle of the sputtering thin film pressure core is to coat the surface of the stainless steel core. Due to the limitation of the structure and process, it is very difficult to increase the withstand voltage limit. If you want to greatly improve its withstand voltage performance, it will inevitably affect its measurement accuracy, make it lose the advantages of high measurement accuracy, and affect the overall stability and reliability of the product. This problem is also the main reason and technical bottleneck that the sputtering film pressure transmitter cannot be widely used. [0003] The pressure ...
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IPC IPC(8): G01L19/00G01L5/00
CPCG01L19/00G01L5/00
Inventor 张燕亮张曙坚金波张林伟
Owner NINGBO CRRC TIMES TRANSDUCER TECH CO LTD