2results about How to "Avoid deflation" patented technology

The invention relates to a portable standard gas supply device and method. The portable standard gas supply device comprises a gas source, a pressure reducing valve, a high-pressure stop valve, a pressure stabilizing chamber, a micrometering valve, a gas distribution chamber, an absolute pressure sensor, a first capacitance film gauge, a second capacitance film gauge, a Pirani vacuum gauge, a first high-vacuum angle valve, a second high-vacuum angle valve and a vacuumizing system. According to the portable standard gas supply device and method, through reasonable design, the device and the pipeline have the functions of heating, gas extraction and purification, replacement, portability and the like, the gas purity is guaranteed from the source, pollution of residual gas or organic matter is reduced, measurement errors caused by unreasonable design are reduced, and the measurement accuracy is improved. The accuracy of the prepared standard gas pressure and components is ensured to the maximum extent; the gas distribution precision is improved, the uncertainty of the gas distribution concentration is reduced, the requirement of field dynamic gas distribution can be met, and the method is simple, feasible and easy to operate.

This utility model relates to the field of tire technology, and more particularly to an outer protective structure for an all-steel radial tire. It includes a bead wire, a cord layer sleeved around the bead wire, an airtight layer bonded inside the cord layer, a steel wire layer bonded to the outer wall of the cord layer, a radial main body at the connection between the steel wire layer and the cord layer, a belt layer bonded to the outer wall of the steel wire layer, a tire shoulder bonded to the outer wall of the belt layer, a tire crown bonded to the outer wall of the tire shoulder, a protective sleeve on the inner wall of the tire crown, and tread blocks on the outer wall of the tire crown. This utility model features a mesh-like protective sleeve, which improves the structural strength of the tire crown and prevents punctures that could cause tire deflation. Two sets of tread blocks provide protection for the tire crown, and "V"-shaped grooves improve the tire's grip and allow for timely drainage of accumulated water.