30results about How to "Convenient and Accurate Monitoring" patented technology

Lubricant escape passages are formed in the threads used to connect one tubular body to another. The passages conduct trapped thread lubricant out of the threaded area to prevent the creation of high lubricant pressure that may damage or cause improper make up of the threaded connection. The passages may be grooves in the crests of the thread teeth and / or may be corner bevels on the thread teeth. In a conductor pipe or other pipe assembly using axially spaced internal and external seals at each axial end of the threaded area, the escape passages form a helical flow path through the engaged thread area. The external seal prevents the entry of corrosive fluids into the threaded area and the internal seal prevents leakage through the threaded area from within the conductor pipe. When the lubricant pressure increases excessively during assembly or impact loading of the connection, the lubricant escapes past the seals to prevent connection damage. When used with a wedge or other metal-to-metal thread engaging designs, the escape passages may be interrupted at some point intermediate their helical path to provide a pressure seal at the point of interruption. Relieving trapped lubricant from a wedge thread connection permits consistent final makeup positions that ensure optimal pressure sealing.

The embodiment of the present invention discloses a bushing strain monitoring method and system based on axially arranging optical fibers, which includes: S1, along the axial direction of the bushing to be measured, laying distributed optical fiber sensors on the surface of the bushing to obtain all The optical fiber strain data collected when the casing is loaded; S2, converting the optical fiber strain data obtained by the distributed optical fiber sensor into strain; S3, based on the preset casing strain monitoring model, calculating the corresponding load data. The present invention detects real-time optical fiber strain through a distributed optical fiber sensor; at the same time, records the applied axial tensile load value and radial bending load value, and obtains the load data corresponding to the output value of the distributed optical fiber sensor based on the casing strain monitoring model , the casing strain monitoring model can express the corresponding relationship between the sensor output value and the casing load (axial and radial). The invention can conveniently and accurately monitor the deformation and load of the casing.