Combined type sealing structure of differential pressure transducer
A sealing structure and sensor technology, applied in the sealing of the engine, the pressure difference measurement between multiple valves, instruments, etc., can solve the problems of easy deformation of the adjustment pad, oil leakage, poor sealing, etc., to avoid installation interference, The effect of reducing thickness and good support effect
Pending Publication Date: 2021-10-01
AECC HUNAN AVIATION POWERPLANT RES INST
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[0004] The disadvantage of the prior art is that the added adjusting pad is easily deformed after installation and use, resulting in poor sealing and oil leakage
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] refer to Figure 1-3 As shown, the preferred embodiment of the present invention provides a combined sealing structure of a differential pressure sensor, including a mounting ring 100, a back-up ring 111 and an O-ring 112, and an internal thread 101 is provided on the inside of the mounting ring 100. There is a groove 102 arranged coaxially with the mounting ring 100 in the axial direction. The groove 102 is an annular structure. The diameter of the gro...
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The invention discloses a combined type sealing structure of a differential pressure transducer, and relates to the technical field of mechanical sealing. The combined type sealing structure of the differential pressure transducer comprises a transducer shell body, an oil supply end, a mounting ring, a check ring and an O-shaped sealing ring, the inner side of the mounting ring is provided with an internal thread, one end of the mounting ring is provided with a groove coaxially arranged with the mounting ring, the groove is of an annular structure, the diameter of the groove is smaller than the outer diameter of the mounting ring, the cross section of the check ring is in a circular ring shape, the longitudinal section of the check ring is in a rectangular shape, the check ring is installed in the groove, and the outer diameter of the O-shaped sealing ring is slightly smaller than that of the check ring. In the prior art, adjusting pads of different specifications are additionally arranged at the oil supply end, the installation angle of the transducer is adjusted, so that the installation interference problem of an oil return pipeline and a cable is avoided, but due to the fact that the adjusting pads are easy to deform, sealing between the adjusting pads and the transducer shell body is unreliable and oil leaks. According to the combined type sealing structure of the differential pressure transducer, the installation ring and the check ring are designed, so that the problem of sealing of the oil supply end of the transducer is well solved, and meanwhile, the problem of installation interference between the oil return pipeline and the cable can further be avoided.
Description
technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a combined sealing structure of a differential pressure sensor. Background technique [0002] The differential pressure sensor of the engine lubricating oil senses the pressure at both ends of the oil supply and oil return at the same time, and is transformed by the internal core, and the electrical connector outputs a differential pressure electrical signal. The oil supply end of the sensor is installed to the engine accessory casing through threads, the oil return end is connected to the lubricating oil return line through a pipeline, and the electrical connector is connected to the engine cable. After the sensor is assembled, the oil return line may interfere with the cable. [0003] The existing sensor seals the oil supply end with a rubber ring, and adjusts the installation angle of the oil return pipeline and the cable by adding an adjustment pad at the oil supply ...
Claims
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IPC IPC(8): F16J15/10G01L13/06G01L19/00
CPCF16J15/104G01L19/00G01L13/06Y02T10/40
Inventor 黎中浩黄波季江华
Owner AECC HUNAN AVIATION POWERPLANT RES INST