Explosion proof vacuum glass tube solar water heater

The utility model discloses an explosion-proof vacuum glass tube solar water heater, wherein an expansible drape is arranged at the upper end portion of a heat-receiving apparatus4 of the solar water heater, and a digging rope guide-holder3 is arranged at the lower end portion of the heat-receiving apparatus4.A digging rope2 connected to the end portion of the expansible drape apparatus is deposed through a hole of the digging rope guide-holder3. People can at any time adjust the expansible drape to covering upon the surface of the vacuum tube according to the outdoor dynamics of the solar light or the changing weather, thereby effectively preventing the chilling-shrink explosion of the vacuum glass tube receiving the lower-temperature running water inside the tube when overheated temperature produced resulting from the sunlight in the vacuum glass tube, or owing to the repeated heating of the stored water in the vacuum glass tube, the later formed scale crust on the surface of the tube wall influences the thermal efficiency of the absorption of the solar energy. The utility model can be further used to shelter from the sand wind or the hailstone simultaneously and improves the heat efficiency and prolongs the service life.