Double-layer oil discharging handhole well
A hand-hole well, double-layer technology, applied in the field of hand-hole wells, can solve the problems of metal parts erosion, damage, oil infiltration into the soil, etc., and achieve the effect of easy replacement and maintenance, and high sealing reliability.
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[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0041] Example: such as Figure 1-16 As shown, a double-layer oil unloading handhole well includes an oil unloading valve 100, an anti-overflow cylinder 50, a support seat 60 and a protective cylinder 70. The support base 60 is provided with an upper end joint 61 and a lower end connected to each other. Joint 62, the lower end of the oil unloading valve 100 is inserted into the upper end joint 61, the upper end of the oil unloading valve is fixedly connected to the plug 40, t...
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