46results about How to "Strong on-site operability" patented technology

The invention discloses a cold and hot alternating test device and method for a converter valve cooling system and belongs to the field of a converter valve cooling system. The device includes a watersupply system, a main circulation system and an air compressor. The water supply system includes a hot water tank and a cold water tank which are connected in parallel. Water outlets of the hot watertank and the cold water tank are respectively connected to a water inlet of the main circulation system through a make-up pump and an electric valve. The main circulation system comprises a main circulation pump, a main filter, a third electric valve, a fourth electric valve and a degassing buffer tank which are sequentially connected by a pipeline. A converter valve to be tested is connected between a water outlet of the third electric valve and a water inlet of the fourth electric valve. An air inlet of the air compressor is connected to the water outlet of the third electric valve througha first electromagnetic valve and is connected to an air outlet of the degassing buffer tank through a first check valve. An outlet of the main filter is respectively connected to water inlets of thehot water tank and the cold water tank through an electric valve. The cold and hot alternating test device and method of the invention has the advantages of simple structure, high degree of automation, safety and reliability and high operation efficiency.

The invention relates to gas-phase and solid-phase flow particle online kinetic characteristic analysis technology, aiming at providing a method and a device which are used for the online measurement of intraductal gas-phase and solid-phase flow particle two-dimensional velocity field and particle size distribution. The device comprises a laser which is a low-power continuous laser of an emittingsheet laser; the laser is movably arranged on a guideway surrounding a pipeline to be measured, the plane of the guideway is vertical to the axial lead of the pipeline to be measured; a CCD camera isalso movably arranged on the guideway, with the lens direction vertical to the direction of the plane of the sheet laser; and the measured position of the pipeline is installed with a transparent glass window. The technology has low cost, compact measuring system and strong field operability, and can carry out online real-time measurement on particle field two-dimensional speed, particle size distribution and particle concentration to different sectional flow fields in the pipeline.

The invention provides an automatic recognizing method and system for UAV aerial survey control points. The method comprises the following steps: manufacturing a portable and recyclable two-dimensional code control point device; recording a mapping relation of ground control point coordinate information and the two-dimensional code control point device into a record sheet; recognizing an image ofthe two-dimensional code control point device in each aerial survey picture through an image processing platform; then recognizing two-dimensional code recognizing code graphic in the image of each two-dimensional code control point device to obtain the device number; searching the record sheet through the image processing platform in order to obtain the ground control point coordinate informationcorresponding to the recognized device number, thus finishing the automatic recognizing process of the UAV aerial survey control points. The method and the system have the advantages that the structure is simple; the field operability is high; the operation is convenient; the two-dimensional code control point device is recyclable; the ground control point coordinates can be easily and automatically recognized in the aerial survey picture processing progress. Therefore, the aerial survey process is simplified, and as a result, the aerial survey picture processing efficiency is improved; the adaptability is high.

The invention belongs to the technical field of foundation engineering, and relates to a preparation method of an end part port sealing precast concrete expanding head tubular pile. Through changing aconnecting mode of an expanding head and a concrete pipe pile, the requirement of the end part port sealing precast concrete expanding head tubular pile for improving the bearing capacity in a mechanical aspect can be met, then the sedimentation of a pile body can be reduced, and the influence of high temperature and residual stress caused by welding can be avoided; and meanwhile, an installationprocess of an end part sensor is improved, a spoke sensor is installed at a pile end of the end part port sealing precast concrete tubular pile, the pile end resistance in a pile sinking process canbe measured; and the friction resistance of a pile side can be calculated according to a pile pressing force, and the change rule of a soil layer in the pile sinking process can be deduced through thepile end resistance and the pile side friction. The preparation method of the end part port sealing precast concrete expanding head tubular pile is simple, convenient to test, simple and convenient to install, high in mechanical degree and strong in field operability, pre-splicing is not needed, and the method is suitable for on-site installation in a piling process.

The invention discloses a fallable type in-hole instrument positioning and embedding device which comprises a mounting plate, hard edges and a monitoring instrument. The device is characterized in that the position of the monitoring instrument fixed on the mounting plate is fixed on the hard edges, the hard edges are adhered to the periphery of the mounting plate through water soluble UV adhesives, the bottoms of the hard edges contacts with the bottom of a hole, the position of the mounting plate is adjusted according to needs, the four hard edges are carried to place the position-adjusted monitoring instrument into a drilled hole, a space for a grouting pipe is reserved, and the drilled hole is filled by grout to complete embedding. The device is simple in structure, convenient to operate, free of complex mounting and operations, accurate in positioning, unlimited by severe external environments, especially suitable for mounting the monitoring instrument in a narrow space, good in mounting effect and simple to operate, difficulty of monitoring instrument embedding on a built project is solved to a great extent, and the monitoring instrument can be mounted fast, efficiently and conveniently.