All-glass vacuum straight-through solar heat collecting tube

The utility model discloses an all-glass vacuum straight-through solar heat collecting tube, and relates to the field of solar heat collection. According to the all-glass vacuum straight-through solar heat collecting tube, the reinforced vacuum glass heat collecting tube comprises the outer glass tube, the inner glass tube, the vacuum interlayer, the polypropylene fiber yarn, the absorbing coating and the oleophobic coating, so that the overall strength of glass can be improved through the polypropylene fiber yarn when the all-glass vacuum straight-through solar heat collecting tube is used; and meanwhile, external dust adsorption can be reduced, the maintenance frequency can be reduced, the arranged rubber protection ring comprises an outer heat-resisting rubber ring, an inner heat-resisting rubber ring, a buffering air bag and an anti-skid coating, during use, the solar heat collecting pipe can be protected during installation, and the service life of the solar heat collecting pipe can be prolonged. And mea