US 12,258,848 B2
Low-pressure liquid inlet manifold and fracturing apparatus
Rikui Zhang, Shandong (CN); Haiping Cui, Shandong (CN); Tianqiang Di, Shandong (CN); and Peng Zhang, Shandong (CN)
Assigned to Yantai Jereh Petroleum Equipment & Technologies Co., Ltd., Yantai (CN)
Filed by YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Shandong (CN)
Filed on Jan. 10, 2022, as Appl. No. 17/572,443.
Claims priority of application No. 202110080048.8 (CN), filed on Jan. 21, 2021; application No. 202110859620.0 (CN), filed on Jul. 28, 2021; and application No. 202121733037.7 (CN), filed on Jul. 28, 2021.
Prior Publication US 2022/0228469 A1, Jul. 21, 2022
Int. Cl. E21B 43/26 (2006.01); F15B 1/02 (2006.01); F04B 11/00 (2006.01)
CPC E21B 43/2607 (2020.05) [F04B 11/0008 (2013.01); F15B 2201/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A low-pressure liquid inlet manifold, comprising:
a main liquid inlet pipe, comprising a first end and a second end that are arranged opposite to each other in an extension direction of the main liquid inlet pipe;
N liquid feeding pipes, arranged in sequence along a direction from the first end to the second end, wherein each of the N liquid feeding pipes comprises a third end and a fourth end that are arranged opposite to each other in an extension direction of the each of the N liquid feeding pipes, the third end is communicated with the main liquid inlet pipe, and the fourth end is configured to provide low-pressure liquid to a plunger pump; and
at least one auxiliary accumulator, the at least one auxiliary accumulator being connected with the main liquid inlet pipe and arranged corresponding to at least one of the N liquid feeding pipes, an orthographic projection of the auxiliary accumulator on an axis of the main liquid inlet pipe overlapping with an orthographic projection of a corresponding liquid feeding pipe on the axis, and N being a positive integer greater than or equal to 2,
wherein each of the at least one auxiliary accumulator comprises:
a top plate in contact with fluid in the main liquid inlet pipe and configured to move along a movement direction; and
a pressure applying portion located on a side of the top plate away from the main liquid inlet pipe, and configured to apply energy storage pressure to the top plate.