Overload and overpressure protection device of ultrahigh pressure plunger pump

Abstract

The invention provides an overload and overpressure protection device of an ultrahigh pressure plunger pump. The overload and overpressure protection device comprises a connector, a rupture disk, a pressing head, a protection cover and a sealing ring, wherein outer threads are arranged at the upper end and the lower end of the outer circumference of the connector; a first through hole is formed inthe center of the connector in the axis direction; the lower surface of the rupture disk covers and presses the upper end face of the connector; the pressing head is of a round pipe structure; the lower end of the pressing head is tightly pressed on the outer edge of the upper surface of the rupture disk; the protection cover is in threaded connection to the top of the connector; the upper end ofthe pressing head is in tight pressing contact with the top of the inner side of the protection cover; the protection cover is fixed to the top of the protection cover; a gap is formed between the inner side face of the protection cover and the outer side face of the protection cover; a round groove is formed in the center of the top of the inner side of the protection cover; a plurality of second through holes are formed in the outer circumference of the upper side part of the protection cover in the circumferential direction; an annular groove is formed in the middle of the lower end face of the connector; and the sealing ring is embedded in the annular groove in a matched manner. The overload and overpressure protection device is scientific in design, easy to mount, simple in structure, large in pressure bearing and wide in overpressure range.

Description

technical field [0001] The invention relates to the technical field of ultra-high pressure plunger pumps, in particular to an overload and overpressure protection device for ultra-high pressure plunger pumps. Background technique [0002] At present, in the field of ultra-high pressure plunger pump technology, the overload and overpressure protection of the pump is mainly achieved by using a safety valve with a spring or air pressure adjustment, or using a pressure sensor for electrical control protection. The safety valve generally bears low pressure, and needs to be adjusted to a certain pressure in advance to play a protective role. The electrical control protection usually has a complicated structure. [0003] In order to solve the above existing problems, people have been seeking an ideal technical solution. Contents of the invention [0004] The object of the present invention is to provide an overload and overpressure protection device for an ultrahigh pressure plu...

AI Technical Summary

Problems solved by technology

The safety valve generally bears a small pressure, and needs to be adjusted to a certain pressure in advance to play a protective role. The electrical control protection usually has a complicated structure.

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