2results about How to "Data error is small" patented technology

This invention discloses a concrete strength testing device and its usage method, comprising: a rebound hammer body and a rebound hammer rod; the rebound hammer rod is disposed on the rebound hammer body; further comprising: a rebound hammer replacement component disposed on the rebound hammer rod, a movable component disposed on the rebound hammer rod, a reset component disposed on the movable component, a support component disposed on the movable component, a fixing component disposed on the support component, an installation component disposed on the rebound hammer body, and an ultrasonic transducer component disposed on the installation component. This invention relates to the field of concrete strength testing, ensuring that the measuring point positions and contact coupling conditions of rebound and ultrasonic testing are highly consistent, minimizing data errors caused by measuring point position deviations and surface condition differences. The structure is relatively simple and easy to use.

This invention discloses a method for locating natural gas leak sources in salt cavern gas storage well sites, comprising the following steps: 1) Deployment of point-type laser methane detectors within key monitoring areas. 2) Monitoring of unknown areas outside the key monitoring areas. 3) Leak source inversion and location: When the concentration value of leaked natural gas in a salt cavern gas storage well site, as monitored by the point-type laser methane detector, reaches a predetermined threshold, the leak source needs to be located promptly. The specific process is as follows: Step 1) Establishing a leak diffusion model; Step 2) Establishing an objective function F; Step 3) Locating the leak point. The leak source location method of this invention has high accuracy and cost-effectiveness, can efficiently obtain concentration interpolation with smaller errors, and solves the problem of insufficient full-coverage monitoring of salt cavern gas storage well sites.