Novel plunger pump fluid end assembly structure

• Main Authors: CUI WENPING, CUI HAIPING, LIU WEICHEN, JIAN BAOGUO
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2020
• Subjects: BLASTING; CYLINDERS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PISTONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a novel plunger pump fluid end assembly structure which comprises a valve box structure assembly, a suction gland and a suction gland connected with the suction gland. Thesuction gland is connected with the valve box structure assembly through the suction packing sealing assembly and has the advantages that an O-shaped ring or D-shaped ring sealing mode in the prior art is replaced by the suction packing sealing assembly between the suction gland and the valve box, and a groove used for filling the O-shaped ring or the D-shaped ring does not need to be formed in the suction gland or the valve box; the sealing performance is good; on the premise of working under high pressure, large displacement and continuous working conditions, compared with an O-shaped ring or a D-shaped ring, the suction packing sealing assembly seals the suction gland in actual use, and the sealing requirements for higher and higher pressure and fluid scouring at present can be better met; the abrasion of the s