Heat transfer device of heat-pipe solar heat collector

The invention discloses a heat transfer device of a heat-pipe solar heat collector. The heat transfer device is characterized in that: a branch heat pipe part of which the lower end is enclosed and the upper end is open is arranged in a vacuum glass pipe; the upper end of a branch heat pipe is connected with a through hole on an outer casing; the axis of the branch heat pipe is vertical to that of the outer casing; an inner pipe of which the two ends extend out of the outer casing are arranged in the outer casing; the two ends of the outer casing are fixed on the inner pipe; a jacket between the outer casing and the inner pipe and the branch heat pipe form a sealed cavity; the sealed cavity is vacuumized and filled with a heat transfer working medium; the vacuum glass tube, a heat pipe and the inner pipe form a heat transfer unit; and a pipe rack formed by the heat transfer unit is the heat transfer device of the heat-pipe solar heat collector. The heat transfer device has a novel structure ...

Method for cleaning casting defect of plasma arc air gouging

The invention discloses a casting drawback processing method using plasma arc air gouging. The quality of gouging surface is sufficiently guaranteed and the productivity is improved, at the same time, the welding repair quality of the casting drawback is efficiently guaranteed. During the casting drawback processing method using plasma arc air gouging, the casting is connected with the anode of power; the electrode of the plasma arc air gouging gun is connected with the cathode of power; the casting drawback is cleaned with the plasma arc air gouging. The electric arc temperature is about 23000 to 31000 centigrade produced by the plasma arc air gouging gun. The invention is very suitable for the casting drawback cleaning of steel casting part of E level before welding.

Intelligent networking management platform for fire emergency communication

The invention discloses an intelligent networking management platform for fire emergency communication, which relates to the technical field of fire wired and wireless voice communication. The intelligent networking management platform comprises a wireless channel access controller, a wireless user access controller, a serial port communication server, a voice switching server and a control management server, wherein the front end of the wireless channel access controller is connected with a various wireless channel machines or terminals, and the backend of the wireless channel access controller is in tandem with the serial port communication server and the voice switching server by a standard RS232 interface and a three-wire system audio interface to realize the wireless voice communication network access and control of a system. The intelligent networking management platform for the fire emergency communication configures parameters by manual operations or a reading plan in on fire-fighting ...

Alterant containing aluminum-magnesium alloy rare-earth phase, its production and use

In-building person positioning system and positioning method thereof based on inertial sensor

The invention discloses an in-building person positioning system and a positioning method thereof based on an inertial sensor. The system comprises a gesture position sensor and an embedded arithmetic processor, wherein the gesture position sensor is placed at an external side of a shank near an ankle joint, and is used for acquiring ankle joint motion inertial data and a three-dimensional electromagnetic compass signal; the embedded arithmetic processor is used for processing data of the gesture position sensor, calculating motion state, motion distance and motion direction and outputting the positioning result; and the embedded arithmetic processor is connected with the gesture position sensor through a USB or a RS-232 interface. With the in-building person positioning system and the positioning method thereof based on the inertial sensor, positioning sensors are not needed to be mounted in the buildings in advance, and the system for positioning the person in the building can be implemented ...

Traditional Chinese medicine pill for treating mazopathy

Disclosed is a Chinese medicinal pill for treating mastosis, which is prepared from licorice root 12-17g, dandehon herb 50-60g, astragalus root 12-17g, saffron 15-20g, pangolin scales 10-15g, spatholobus stem 12-17g, radix scrophulariae 12-17g and notoginseng 12-15g through steps of grinding into medicinal powder, and mixing 500g of the medicinal powder with 0. 4-0. 6g of bee honey to obtain the pills for oral administration.

Intelligent image identification based remote monitoring transmission system of operating conditions of fire alarm controller

The invention relates to an intelligent image identification based remote monitoring transmission system of the operating conditions of a fire alarm controller, comprising a small-size camera, a light source compensator, an image acquisition module, an embedded type operation processing module and a GPRS (General Packet Radio Service) communication module. The invention solves the problems that the fire alarm controller is difficult to analyze a communication protocol and realize interconnection, intercommunication and centralized remote monitoring, has the advantages of simple structure, easy and convenient operation, stability, reliability and low cost without any changing the installing and using mode of the traditional fire alarm controller or connecting in a wiring way, and does not relate to steal technical secrets of a manufacture factory of the fire alarm controller compared with a protocol identification and analysis method; and in addition, the intelligent image identification ...

Medicinal wine for treating hemorrhoids

A medicinal wine for treating pile, venereal disease and dermatopathy is prepared from giant typhonium fruit and grain spirit through immersing for 6-8 days and filtering.