32results about How to "Meet different design requirements" patented technology

This invention discloses method and specific apparatus for producing fireproof glass. The apparatus comprises: an upper stage plate, a furnace, a cooling wind grating and a lower stage plate. A baffle is set between the heating furnace and the cooling wind grating. The method comprises: (1) spray-coating a cesium / potassium salt solution onto glass at normal temperature; (2) naturally wind-drying the spray-coated glass at normal temperature, placing in a 680-725 deg.C tempering furnace, rapidly heating, cooling, circulating the glass between the heating furnace and the cooling wind grating by a roll so that the heating and cooling temperature is uniform, and unloading to obtain fireproof glass. The cesium / potassium salt solution comprises: cesium salt 0.8-1.2%, potassium salt 38-41%, acetone 40-45%, formic acid 8-13%, and Swiss-78 6-8%. The fireproof glass has such advantages as high heat resistance, low specific gravity, high light permeability, no yellowing, and no air bubbles.

The invention is a thin wall mold shell component, comprising top plate, side walls and bottom plate, which compose a cavity and characterized in that the bottom plate is provided with at least a boss module protruded from it, at least a pair of opposite side walls is provided with at least a pair of opposite connection parts, which transversely extend from the top plate, and at least a pair of opposite connection parts is in the same line. It is applied to hollow building covers, house covers, walls, foundation slabs and hollow bridge beams of cast-in-site reinforced concrete or prestressed reinforced concrete, especially beamless building covers.

The invention discloses a method for forming a long-dimension diaphragm sleeve of a pulse engine. According to the structural characteristics and functional characteristics of the product, the method determines the thickness of the heat-insulating layer and the fiber composite layer, and prepares the casting mold and metal connecting parts for forming the sleeve. Then prepare the joint that contains the metal connector, install the joint on the forming mandrel, carry out manual patching with heat-insulating material on the forming mandrel surface that does not wrap joint, then wind fiber dry yarn on the surface of the manual patching layer; vulcanization obtains The bottom layer of the thermal insulation layer; the carbon fiber is fully soaked in the epoxy resin glue, and the carbon fiber is wet-wound on the surface of the carbon fiber cloth to obtain a fiber composite layer, and the thermal insulation material is continued to be manually pasted on the surface of the composite layer, and the long dimension of the pulse engine is obtained by vulcanization Bulkhead sleeve. The invention is suitable for forming the partition sleeve reinforced by resin-based composite material, the main structure of which is non-metallic material, the total weight of the product is small, and it is beneficial to reduce the negative mass of the engine casing.

The invention provides a door body for a refrigerator and the refrigerator with the same. The door body comprises a body, a pre-buried box and a circuit board assembly, wherein the pre-buried box is arranged in the body in a direction which forms a preset angle with the vertical direction; the pre-buried box is communicated with the upper surface of the body so as to form a faucet with the upper surface; the lower end part of the pre-buried box is connected with the right surface of the body; the circuit board assembly is matched with the pre-buried box; and the circuit board assembly is inserted into the pre-buried box through the faucet. According to the door body, the position of the pre-buried box is more firm; and the circuit board assembly is displayed closer to one side of the doorbody, so that the display is more attractive; according to the refrigerator, the position of the display circuit board of the door body can be regulated as required through the position of the presetpre-buried box, so that the display position on the refrigerator is more flexible in design and the selection of a user is more diverse; in addition, the display position of the refrigerator is more fixed, so that dislocation between the display position and a transparent hollowed window of the door body is avoided.

The invention discloses a cold upsetting forming method for a power supply pin. The cold upsetting forming method for the power supply pin includes the following steps that first, a blank is cut out; second, a power supply pin body is necked and preformed; third, a pin fixing disk is preformed; and fourth, the power supply pin is integrally formed. The cold upsetting forming method is simple in process, high-speed and automatic production is realized, production efficiency is high, the material utilization rate is increased, and the strength is improved.

The invention discloses a multi-mode switching method of a switching power supply and the switching power supply. The multi-mode switching method of the switching power supply is characterized in that a mode selecting pin is additionally arranged on the switching power supply to receive an externally input mode selecting signal; a control module for controlling a switching tube to be connected and disconnected is used for limiting the type of an output modulating signal according to the mode selecting signal, so as to limit the working mode of the switching power supply. According to the multi-mode switching method of the switching power supply and the switching power supply, the mode of adding external input voltage is adopted to control the switching power supply to be selectively switched under the supported various working modes, and after the working mode is selected, the switching power supply is forcible to be worked under such mode without being influenced by the change of load current; therefore, the generality of the switching power supply is improved, one switching power supply can work under various modes, and as a result, different design requirements of different systems can be met; in addition, the working mode of the switching power supply cannot change along with the load current in some special application place, and therefore, the special application demands of some places can be met.

The invention discloses a circuit of a self-bias low-voltage operational transconductance amplifier with adjustable loop gain and a loop gain control method. The self-bias low-voltage operational transconductance amplifier adopts a self-bias operational transconductance amplifier to provide a two-stage operational transconductance amplifier with a direct current bias, and provide the operational transconductance amplifier circuit with a partial positive feedback mechanism, thereby getting higher gain superior to a traditional operational amplifier; and the circuit gain thereof is controlled at the same time by adjusting the dimension proportion of a tail current tube of a differential input stage, thereby ensuring the stability and obtaining the optimized performance of the operational amplifier.

The invention is a thin wall mold shell component, comprising top plate, side walls, and bottom plate, which compose a cavity, and characterized in that at least a side wall is provided with at least a connection part, and the other opposite side wall is also provided with at least a connection part. It is applied to hollow building covers, house covers, walls, foundation slabs and hollow bridge beams of cast-in-site reinforced concrete or prestressed reinforced concrete, especially beamless building covers.