Anti-damage self-expanding rubber combined sleeve and use method thereof

The invention relates to an anti-damage self-expanding rubber combined sleeve and a using method thereof.The combined sleeve comprises a sleeve body, a self-expanding rubber layer and a soluble cover body which are of a cylindrical structure, and the sleeve body is fixedly sleeved with the self-expanding rubber layer which can absorb fluid to expand; the cover body is fixedly arranged outside the self-expansion rubber layer in a sleeving mode and can be dissolved in fluid. The anti-damage self-expanding rubber combined sleeve has the beneficial effects that the structure is simple, the design is reasonable, the integrity of the self-expanding rubber is kept when the combined sleeve is put down, the rubber is prevented from being damaged by foreign objects, the self-expanding rubber cannot expand in advance, finally, the function of the self-expanding rubber combined sleeve is completely exerted, and the service life of the self-expanding rubber combined sleeve is prolonged. The problem of deformation of the c