Support device of medium pressure guiding pipe of suspension type sensor
A support device and sensor technology, applied in the field of sensors, can solve the problems of sintering and complex installation process, and achieve the effects of high insulation, simple production process and convenient installation
Inactive Publication Date: 2010-06-16
CHONGQING CHUANYI AUTOMATION
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Problems solved by technology
At present, the suspended metal capacitive pressure / differential pressure sensor uses a D-shaped metal tube to connect to the external ground. In order to achieve ground isolation, the D-shaped metal tube must be fixed in a sintering fixture and a ceramic gasket before sintering. Fixed to achieve suspension, and then separated from the metal coating layer by the ceramic cap, the sintering and installation process is complicated
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[0012] see Figure 1-Figure 3 . The glass 1 is closely connected with the membrane base 5, and the membrane base is provided with a central hole (not shown), and the open ceramic cup 2 with the central hole is placed on the membrane base and the glass body, and a U-shaped opening is arranged on the wall of the ceramic cup , The opening width is 4-4.5mm to ensure the fluidity of the glass during sintering. There are two symmetrical U-shaped openings on the wall of the ceramic cup, which can quickly introduce and fill the inner cavity with molten glass. The central hole of the open ceramic cup communicates with the medium in the sensor, and one end of the metal tube with a bent part passes through the ceramic gasket and enters the central hole of the open ceramic cup to form a supporting sensor assembly, and put the supporting sensor assembly into the central hole of the sensor and the membrane The seat is sealed.
[0013] The diameter of the central hole of the ceramic cup i...
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Abstract
The invention relates to a support device of a medium pressure guiding pipe of a suspension type sensor. A glass body is tightly attached onto a membrane seat on which a central hole is arranged. The support device is characterized in that an opening ceramic cup with a central hole is put on the membrane seat and the glass body, the central hole of the opening ceramic cup is communicated with a medium in the sensor, and one end of a metal pipe with a bent part passes through a ceramic gasket and enters the central hole of the opening ceramic cup to form a sensor supporting assembly which is put in the membrane seat to be sealed with the membrane seat. By adopting the support device, the metal pipe of the sensor can be supported and fixed, and meanwhile, a metal coating membrane layer can also be isolated; and the support device has the advantages of simple production technology and convenient installation.
Description
technical field [0001] The invention belongs to the field of sensors, in particular to a support device for a medium pressure introduction pipe of a suspension sensor. Background technique [0002] Pressure / differential pressure sensors are widely used in various fields, such as medical equipment, industrial control, pressure control, aerospace, etc. Among them, pressure / differential pressure sensors that work on the principle of metal capacitance are widely used for pressure detection of various media. At present, the suspended metal capacitive pressure / differential pressure sensor uses a D-shaped metal tube to connect to the external ground. In order to achieve ground isolation, the D-shaped metal tube must be fixed in a sintering fixture and a ceramic gasket before sintering. It is fixed to achieve suspension, and then separated from the metal coating layer by a ceramic cap, and its sintering and installation processes are complicated. Invention content: [0003] The p...
Claims
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IPC IPC(8): G01L19/00
Inventor 聂绍忠
Owner CHONGQING CHUANYI AUTOMATION