Static expansive agent hole sealing device and hole sealing method
A technology of static expansion agent and hole sealing device, which is used in sealing/isolation, earth-moving drilling, wellbore/well components, etc. Improve the quality of the hole sealing, the effect is obvious
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[0020] A static expansion agent sealing device, which includes a bolt 2, a sealing material 1 is fixed on the bolt head of the bolt 2, an expansion sleeve 3 is sleeved on the screw rod of the bolt 2, and the expansion sleeve 3 is fixed by a hex nut 5.
[0021] The length of the expansion sleeve 3 is 0.3-1 meter; when the length is less than 0.3, when the expansion sleeve 3 is expanded by rotating and squeezing the hexagonal nut, the required force will be very large; it is easy to cause the hexagonal nut 5 to slip or be damaged. If the length is too large, after the expansion sleeve 3 is extruded and deformed to seal the hole, due to too little sealing surface, the force of sealing the hole may not be enough, resulting in spray holes.
[0022] The number of the expansion sleeve 3 is at least one section; one end of the first expansion sleeve 3 is fixed on the bolt head of the bolt 2; the other end is fixed by a hex nut 5; each section of the second to the last expansion sleeve ...
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