45results about How to "Ensure site safety" patented technology

The invention discloses an assembly type building pipeline supporting and lifting frame system installation method based on a BIM. The installation method includes the steps that supporting and lifting frame design and stress analysis are conducted, the supporting and lifting frame connecting and fixing manner is determined, and a supporting and lifting frame design drawing is obtained; the drawing is guided into BIM software, and three-dimensional modeling is conducted; adjustment optimization is conducted on supporting and lifting frame arrangement, arrangement design, stress calculation and product model selecting of supporting and lifting frames are completed; part drawings and assembling drawings of all assemblies are generated, and factory production of the assemblies is achieved accordingly; measuring paying-off of the supporting and lifting frame system is conducted on the spot, and structure punching operation is conducted accordingly; and the supporting and lifting frames are formed through assembling, and installation is completed. By means of the assembly type building pipeline supporting and lifting frame system installation method based on the BIM, energy can be obviously saved, steel is saved, air pollution, noise pollution and light pollution brought by field feeding, cutting, welding, drilling and the like are avoided during installation, the manufacturing cost is reduced, meanwhile, the field safety of a constructor is ensured, and the work intensity of a laborer is effectively lowered.

The invention discloses a roadway surrounding rock stress monitoring device based on fiber bragg grating sensing. Grooves are symmetrically carved in a metal rod along the axial center, an FBG set is fixedly installed inside each groove, FBGs serve as sensitive elements, when roadway surrounding rock is deformed, the stress of the surrounding rock will be changed, therefore, force is generated through the metal rod, surface micro-deformation is generated, the grating distances of the FBGs attached to the metal rod are changed along with the metal rod, the center reflection wavelength of the FBGs can be caused to generate drifting, wavelength signals are demodulated into electrical signals through an FBG interrogator, and the stress situations of different sites can be obtained. The roadway surrounding rock stress monitoring device has the advantages that installation is easily achieved, and the roadway surrounding rock stress monitoring device is suitable for wide popularization; power is not required to be supplied to the working face end, and site safety is guaranteed; all-optical measurement and fiber transmission are adopted, and influences of electromagnetic interference are effectively avoided; the temperature error is compensated, and the accuracy is improved; the surrounding rock stress monitoring results can be timely and accurately provided, and guidance on site production and scientific research is facilitated.

The invention relates to a surrounding rock stress on-line monitoring system and method based on a fiber bragg grating borehole stress meter. A plurality of measurement points are arranged on a surrounding rock, the fiber bragg grating borehole stress meter is installed in a surrounding rock wall drill hole, an optical fiber connector is connected with an optical fiber, and the optical fiber is connected to a mining optical cable, is then directly connected to the ground, and is connected with a fiber bragg grating modulator; an optical signal is modulated to a digital signal by the fiber bragg grating modulator, the digital signal is transmitted to a computer, is monitored in real time and is analyzed and processed, and a surrounding rock axial stress and transverse stress analyzing and processing method is provided under the temperature compensation condition according to grating stress characteristics. The surrounding rock stress on-line monitoring system and method have the advantages that equipment is easy to install, long in service life and suitable for popularization and use; power supply is not needed underground, electrical signals and electronic devices do not exist, and therefore the field is safe; because all-optical measurement and optical fiber transmission are adopted, monitoring precision is greatly improved, and effect of electromagnetic interference can be effectively avoided under complex and poor environment; surrounding rock stress monitoring results can be provided in time and guiding of field production and scientific research work is facilitated.

The invention provides a supplementary combustion chamber of a supercritical pressure gas-liquid fuel generator, and relates to oil extraction equipment in an oil field. The supplementary combustion chamber is characterized by comprising a pre-combustion chamber (6), a secondary combustion chamber (10) and a vaporizing chamber (14). A spouting mode of fuel of the supplementary combustion chamber is as follows: the pre-combustion chamber (6) only sprays part of the fuel and full air for oxygen-enriched combustion; the remaining fuel is sprayed into the secondary combustion chamber (10) from a supplementary combustion inspirator and completely combusted with oxygen-enriched gas from the pre-combustion chamber in the secondary combustion chamber (10). By the combustion chamber, simultaneous combustion of gas fuel and liquid fuel is realized, and heat transfer deterioration is prevented due to various cooling modes.

The present invention relates to a substation intelligent inspection system and method. The system includes: a master station server and a plurality of inspection clients; wherein, the master station server is used to provide inspection task information for the plurality of inspection clients; The plurality of inspection clients are used to obtain the inspection task information from the master station server in a wireless manner, and execute inspection tasks for power transformation equipment according to the inspection task information. The invention can realize standardized customization of substation inspection tasks, visualized execution of inspection content, trace query of inspection results, further improves the inspection quality of substations, ensures on-site safety, improves work efficiency and reduces labor intensity at the same time.

The invention relates to an Internet of Things dynamic monitoring and early warning method of a major hazard source under a coal mine and belongs to a dynamic monitoring and early warning method under a coal mine. A monitoring and early warning system comprises an underground sensing platform, an underground early warning control platform, an overground and underground network platform and an overground monitoring management platform; the underground sensing platform acquires major hazard source information through a monitoring device consisting of an optical fiber grating sensor; the overground and underground network platform transmits data; the overground monitoring management platform provides an application for analysis processing and provides a result to all parties for use after receiving the data; and the underground early warning control platform controls underground linkage equipment and a device according to a received instruction. The method is constructed based on Internet of Things; dynamic monitoring and early warning of the major hazard source under the coal mine are realized by adopting an optical fiber grating sensing technology; the monitoring result is more accurate; the interference resistance is high; a site is safe; a signal transmission distance is extended greatly; the signal transmission speed is increased greatly; a platform and a foundation are provided for cross-discipline analysis of the major hazard source; and requirements of different aspects on dynamic management can be met.