2 results about "Rise over thermal" patented technology

The utility model relates to ring net case technical field, concretely is a primary and secondary fusion ring net case, including box, the inside wall of one side of box is provided with adjusting assembly respectively, the beneficial effect of the device is: through the airtight cylinder of internal air pressure is lower than normal temperature air pressure is located in the box, when the summer or the high temperature of equipment work produces in the box interior, the gas in airtight cylinder expands with temperature rise, makes the cover plate and sealing washer separate, and then lets the box carry out air cooling circulation through the air outlet groove and air inlet groove, carries out the cooling to the box interior, when the environment temperature reduces in autumn and winter season, the box interior temperature also reduces along with it, makes the gas in airtight cylinder unable to expand, and under the action of negative pressure, makes the cover plate adhere on sealing washer, thereby carries out the heat preservation to the box interior, to avoid the rust and short circuit condition caused by condensation phenomenon, and the structure does not need power supply, and then reduces the energy consumption, and simultaneously, simple structure, the production cost is low.

The invention discloses a fire-resistant flame-retardant communication cable, which relates to the technical field of communication cables and comprises a conductor arranged in the center of a cable axis and provided with a wire, an insulating layer arranged on the outer side of the conductor, and a combined fire-resistant layer composed of three fire-resistant layers, interlamellar spacing exists among the three fire-resistant layers, and the interlamellar spacing is reduced after the temperature of the cable rises. A first guide groove is formed in the outer side of the combined refractory layer, the isolation layer is arranged on the outer side of the combined refractory layer, a second guide groove is formed in the inner side of the isolation layer, the second guide groove corresponds to the first guide groove, an expansion unit is arranged in the expansion cavity, and the expansion unit expands after being heated to a first temperature; the expansion units are arranged in the fireproof layer and the isolation layer, the leakage prevention unit is unlocked along with temperature rise in a fire disaster, the expansion units are heated to rapidly expand to form a fireproof plug, a gap between cable layers and an axial channel are tightly plugged, and the effect of accurately preventing flame from spreading in the axial direction of the cable is achieved.