4results about How to "Improve airtight performance" patented technology

The invention provides a module truss rib concrete self-heat-preservation wallboard, and relates to the technical field of building wallboards, the module truss rib concrete self-heat-preservation wallboard comprises an inner acanthus, an outer acanthus, diagonal web member ribs and a heat preservation material layer, and inner chord ribs are longitudinally arranged in the inner acanthus; outer chord ribs are longitudinally arranged in the outer acanthus; the diagonal web member rib sequentially bypasses the inner chord rib and the outer chord rib from top to bottom in an S shape and is fixed, an inner ring-shaped structure and an outer ring-shaped structure are respectively formed between the bent part and the inner chord rib and between the bent part and the outer chord rib, and an inner horizontal rib and an outer horizontal rib are respectively fixed in the inner ring-shaped structure and the outer ring-shaped structure; a cavity between the inner acanthus and the outer acanthus is filled with the thermal insulation material layer; the thermal insulation material layer is arranged between the inner acanthus and the outer acanthus in a foaming mode, the air tightness and the integrity are higher, and the problems that construction is tedious due to the fact that a traditional wall body is used for external thermal insulation, an external thermal insulation structure is prone to falling off, and safety accidents occur are solved; and the compression resistance and shear resistance of the self-heat-preservation wallboard can be improved, and the bearing capacity of the self-heat-preservation wallboard is greatly improved.

The invention relates to a discarded well plugging device and belongs to the field of petroleum well completion, the discarded well plugging device comprises a discarded well and further comprises a plugging body for plugging the discarded well, the plugging body comprises a plugging column, the outer wall of the plugging column is sequentially provided with a packing block, an anchoring block and plugging alloy along the vertical center line of the plugging column, and the plugging column is connected with a heating structure for melting the plugging alloy. The sealing column is made of molten sealing alloy, the molten sealing alloy makes contact with the sealing block to form a sealing layer, the sealing block comprises a metal cone and an expansion rubber plug arranged on the sealing column in a sleeving mode, the metal cone making contact with the sealing body is arranged on the expansion rubber plug in a sleeving mode, and the end of the expansion rubber plug penetrates through the metal cone and extends outwards. The method is simple in construction, low in operation cost, high in airtight sealing effect, stable, reliable and resistant to corrosion.

The present invention relates to a high-efficiency pyrolysis gasification furnace system for domestic waste, and belongs to the technical field of domestic waste incineration treatment equipment. The pyrolysis gasification furnace system includes a feed bin, a double-roller feeding device, an upper flue, an upper cover, a furnace cover seat, a furnace body, a grate assembly, a grate transmission device, a rotating platform, a furnace body transmission device, a furnace body support seat, a bottom support seat, a primary air supply duct, a slag discharge device, and a concrete water tank. The high-efficiency pyrolysis gasification furnace system for domestic waste of the present invention has a novel structure, efficient and environmentally friendly operation, and is suitable for high-efficiency and environmentally friendly small-scale waste treatment projects in small counties and towns in developed areas at home and abroad, with a treatment scale of 50 to 500 tons of domestic waste per day, and is easy to promote and apply.

This utility model discloses a fully sealed surface-mount tantalum capacitor, comprising a shell, a core, and a cover plate. One side of the shell is connected to the cover plate. A positive and negative lead are provided on the outer wall of the shell. The core is disposed inside the shell and connected to the inner wall of the shell through a conductive layer. An anode wire is provided on the core, with one end connected to a lead wire. The lead wire passes through the cover plate and connects to the positive lead. This capacitor employs a metal shell encapsulation structure, improving the capacitor's hermeticity and enabling it to maintain good performance even in harsh environments such as high temperature and high humidity. The connection point between the tantalum wire lead wire and the anode wire is flattened to increase the contact area and enhance welding strength. Furthermore, the welding point is located inside the metal shell, increasing the reliability of the connection. The metal shell is covered with a first insulating layer, followed by a third and fourth insulating layers, providing double-layer insulation protection and improving reliability.