35results about How to "Wide heating range" patented technology

A method of manufacturing a fused silica crucible by heating and melting a vitreous silica powder compact shaped into a mold using arc discharge of electrodes arranged around a rotation shaft of the mold, includes the steps of: arranging the electrodes in a ring shape, and setting a ratio W/R of a horizontal distance W between the electrode front end and the surface of the vitreous silica powder compact to a vitreous silica powder compact opening radius R, for at least a predetermined time during arc heating, to be in the range of 0.002 to 0.98.

The invention relates to a half-variable-radius circular arc framework-type preheating device. The half-variable-radius circular arc framework-type preheating device comprises preheating device tracks and roller frame tracks which are respectively arranged in parallel; the preheating device tracks are provided with an equilibrium bogie; the lower part of the equilibrium bogie is in contact with the preheating device tracks through installing equilibrium bogie walking wheels; the equilibrium bogie is provided with a preheating device installation frame; the upper part of the preheating device installation frame is provided with a preheating device; the preheating device consists of a heating device and a variable diameter device; the variable diameter device consists of at least two columns of variable diameter plates; each column of variable diameter plates are composed of a plurality of arc plates; adjacent arc plates are connected movably through pin shafts; two adjacent variable diameter plates are connected through connecting rods, and the connecting rods between two columns of variable diameter plates are uniformly provided with heating devices; the roller frame tracks are provided with walking roller frames; the walking roller frames consist of rotary mechanisms and conveying mechanisms; the rotary mechanisms are arranged in conveying supports of the conveying mechanisms. The half-variable-radius circular arc framework-type preheating device provided by the invention can be suitable for the weld preheating working procedure of cylinder bodies with different pipe diameters and different wall thicknesses, and also has the advantages of being wide in heating range, low in use cost, accurate in temperature control, capable of automatically correcting preheating temperature, convenient and safe to operate, and the like.

The invention provides a compound-typed first class absorption heat pump and belongs to the technical field of waste heat utilization and heat pump/refrigeration. The invention aims at the shortcomingof the single class heat pump and provides a compound integrated type machine set mainly consisting of a first class generator, a second class generator, a first class condenser, a second class condenser, a first class absorber, a second class absorber, an evaporator, a throttle, a solution pump and other basic components. A first class heat pump procedure with high performance index and a low temperature heat supply section consists of the first class generator, the first class condenser, the throttle, the evaporator, the solution pump and the first class absorber; the second class generator, the second class condenser, the throttle, the solution pump and the absorber form a second class heat pump procedure with a high temperature heat supply section and low performance index with the help of the first class procedure; wherein, the second class condenser is communicated with the first class condenser through the throttle and the first class generator is communicated with the second class absorber through a refrigerant evaporation channel; the heat pump can fully take use of the waste heat and has higher energy-saving benefit when in the high temperature heat supply in a wide temperature range; the waste heat refrigeration can make use of driven heat deeply.

Disclosed in the invention is an electric meter box comprising a main square body including a box body and an upper cover, an electric meter seat, and indefinite square vertical plates. The electric meter seat arranged in the box body has a quasi-square-frame type structure with electric meters around an electric meter; the electric meter seat fixed at the bottom surface of the electric meter box vertically includes a main body having an integrated structure formed by two square horizontal plates and one square vertical plate. The indefinite square vertical plates are clamped into one pair of opposite clamp grooves detachably. Damping gaskets are arranged at the surfaces, approaching the electric meters, of the vertical plates and the indefinite square vertical plates and include sponges and spring layers bound to the sponges successively towards the direction approaching the electric meters. According to the invention, electric meters in the electric meter box can be fixed; and the vibration or inclination of the electric meters can be reduced and thus metering errors of the electric meters can be reduced.

The electromagnetic heater with the protection mechanism for the oil well comprises a shell, limiting openings are formed in the two ends of the shell, a bottom plate is fixedly connected to the bottom of the shell, a mounting frame is fixedly connected to the top of the shell, and an air cylinder is fixedly mounted on the inner wall of the top of the mounting frame; the bottom end of an output shaft of the air cylinder penetrates through the top of the shell and is fixedly connected with a lifting plate, the lifting plate is located in the shell, the bottom of the lifting plate is fixedly connected with a transmission rod, the bottom end of the transmission rod is fixedly connected with a heating cover, an electromagnetic heating mechanism is arranged in the heating cover, and a protection mechanism is arranged at the top of the shell. The device has the characteristics of reasonable structural design, good protection effect, wide heating range, high efficiency, good stability and the like.

The invention discloses a method for combined co-mining of deep coal bed gas and coal by using multi-mode microwave radiation. Firstly, a microwave control system is arranged on the ground of a coal-bed gas well, and then a radiating antenna is arranged at a target perforation layer; starting a microwave source, radiating the coal seam in a high-power and short-time mode to enable the coal seam to generate and extend cracks, and improving the permeability of the coal seam; then the microwave radiation mode is adjusted to be low-power and long-time, the temperature of the coal bed is increased to the coal bed gas desorption temperature through the microwave heating technology, a production well is opened, and coal bed gas is exploited; and finally, radiating the coal seam for a long time by adopting medium power to enable the temperature of the coal seam to rise to the coal pyrolysis temperature, and exploiting tar and pyrolysis gas generated by underground coal pyrolysis. According to the method, the mode of microwave radiation is adjusted, the three effects of rock breaking and permeation increasing, coal bed gas mining and coal pyrolysis are achieved in the same well, the purpose of co-mining of deep coal bed gas and coal is achieved, and a feasible thought is provided for green and efficient conversion of deep coal.

The invention discloses an infrared ray generating net. A burning device comprising at least one burner, a supporting assembly, an infrared ray reflecting plate and the infrared ray generating net; the at least one burner is provided with a fire outlet; the infrared ray generating net is arranged on the supporting assembly and is heated by flame generated from the fire outlets to generate infraredrays; the supporting assembly includes a rear shield, the infrared ray reflecting plate is disposed between the rear shield and the infrared ray reflecting plate, and the infrared ray reflecting plate reflects the infrared rays incident on the infrared ray generating net; and an infrared ray heat source is generated to effectively increase the heating intensity and achieve the purpose of uniformheating.

The present invention relates to the preparation of film, especially film on the substrate of belt metal material. The present invention makes current flow through the metal substrate directly for heating, the film prepared in the said method has excellent performance and high homogeneity. The present invention has the advantages of easy use, easy processing, low cost, high temperature homogeneity, wide heating width, simple operation and good repeatability.

The invention relates to a method for testing chemical components of an in-situ TiB2 ceramic particle reinforced aluminum alloy. The method comprises the following steps: (A) dissolved sample preparation: (A1) dissolving an in-situ TiB2 ceramic particle reinforced aluminum alloy material by using a nitrate acid mixed solution with the ratio of HNO3 to HCl being 2: 3-2: 7; (A2) heating the solution obtained in the step (A1) to fully dissolve the material; and (A3) fixing the volume of the solution obtained in the step (A2) to obtain a to-be-detected dissolved sample, and (B) sample dissolution test.

The invention discloses a rotary heating device which comprises a base, a shell, a fan, a heating pipe and a power connection assembly. Two side-by-side wire clamping grooves are formed between the upper side and the lower side of the interior of the shell and one side in the horizontal direction in a penetrating mode, heating pipes are movably clamped between the upper ends and the lower ends of the wire clamping grooves in a linear array mode, the front row of heating pipes and the rear row of heating pipes are arranged in a staggered mode, a pull cover is vertically and movably installed at the upper end of the shell, and a spring is fixed between the pull cover and the shell. The device has the beneficial effects that firstly, the heating pipe is electrified and heated to heat air blown out by the fan, the heat supply function is achieved, the shell is rotated through the rotating power unit, and the shell can continuously rotate by 360 degrees and does not need to swing back and forth, so that the heating range is wider, the surrounding environment is heated more uniformly, and heat concentration is avoided; and the device is easier to disassemble and assemble, and more convenient to assemble or overhaul.