Ultra-high voltage sputtering-resistant film pressure transmitter and manufacturing method thereof
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. It can solve problems such as stress can not be released, loss of measurement accuracy, pressure signal drift, etc., to improve withstand voltage The ability to reduce the effect of high voltage shock
Active Publication Date: 2021-02-26
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 in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the invention is not limited to these embodiments.
[0036] Such as Figure 1-2 As shown, an ultra-high voltage resistant sputtering film pressure transmitter includes:
[0037] The joint 100, the joint 100 is mainly used to protect its internal components, and is used to install the pressure transmitter to other components.
[0038] Sintered base 200, the sintered base 200 is installed in the joint 100, and there is a buffer between the bottom surface of the sintered base 200 and the joint 100, in the case of violent movement, there will be a small gap between the sintered base 200 and the joint 100 The relative displacement of the sintered base 200 avoids the direct collision between the joint 100, avoids the transfer of installation stress to the pressure core 500, and eliminate...
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The invention discloses an ultra-high voltage sputtering-resistant film pressure transmitter and a manufacturing method thereof, and solves the problems that in the prior art, the insulation voltage resistance of a pressure transmitter is generally not high, and the product stability is poor due to the fact that stress is easily generated during welding of a pressure core body. The ultra-high voltage sputtering-resistant film pressure transmitter comprises a connector, a sintering base, a welding seat, a pressure core body and a circuit board, an insulating seat is arranged between the weldingseat and the sintering base, the insulating seat comprises a ceramic ring and sintering glass, and the welding seat is insulated and sealed by utilizing the ceramic ring and the sintering glass. Therefore, the overall voltage withstanding capability of the transmitter is improved, and the measurement accuracy of the pressure core body is not affected. An O-shaped rubber ring is arranged between the sintering base and the connector, the O-shaped rubber ring can be used for providing the shock absorption performance for the sintering base, the stress influence on the pressure core body during installation can be eliminated, and the measurement precision of the pressure core body is guaranteed.
Description
technical field [0001] The invention relates to the technical field of pressure transmitters, in particular to an ultra-high voltage resistant sputtering film pressure transmitter and a manufacturing method. Background technique [0002] The insulation withstand voltage of existing sputtered film core pressure transmitters is generally not high, around 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 of sputtering film pressure transmitters that cannot be widely applied. [0003] The pressure core ...
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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