2results about How to "Reduce streaming" patented technology

The application relates to a heat exchanger which comprises a first header section, a second header section and a plurality of heat exchange pipes, the first header section comprises a first piece, a second piece and a sealing piece, the first piece is provided with a first protrusion on the side facing the second piece, the second piece is provided with a first groove on the side facing the first piece, the sealing piece comprises a first sealing section, the length direction of the first sealing section at least partially extends along the length direction of the first groove; when the first piece, the second piece and the sealing piece are in a connected state, the first sealing section is at least partially located in the first groove, the first protrusion abuts against the first sealing section, the first sealing section is deformed and relatively seals the gap between the first protrusion and the first groove; the first piece and the second piece are provided with a first cavity and a second cavity, the first cavity and the second cavity are respectively located on the two sides of the first protrusion, the plurality of heat exchange pipes respectively communicate the first cavity with the pipe cavity of the second header section and the second cavity with the pipe cavity of the second header section; the heat exchanger has better sealing performance between the front row and the rear row.

The utility model provides a kind of self-preheating gas heating preheating furnace, including furnace body, transmission component, several circulation components and several heating devices;The furnace body has furnace cavity inside, the transmission component is installed in the furnace cavity, workpiece is transmitted by the transmission component and passes through the furnace cavity, the furnace cavity is divided into several sections along workpiece transmission direction, each the section is combined with the circulation component and several heating devices;The circulation component and several heating devices are arranged at the top of the transmission component, and several heating devices are arranged at the bottom of the transmission component;The heating device is self-preheating gas heating device.The self-preheating gas heating preheating furnace is divided into sections, and the furnace gas series flow is reduced, the temperature control precision and stability are better;The self-preheating gas heating preheating furnace uses self-preheating heating device, is energy-efficient, the energy utilization rate is higher, and energy consumption is lower.