US 12,345,172 B2
Fracturing device, engine and exhaust apparatus thereof
Xiaolei Ji, Shandong (CN); Junlong Du, Shandong (CN); Rikui Zhang, 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 Jul. 5, 2023, as Appl. No. 18/347,346.
Application 18/347,346 is a continuation in part of application No. 17/900,348, filed on Aug. 31, 2022.
Application 17/900,348 is a continuation of application No. PCT/CN2021/074180, filed on Jan. 28, 2021.
Claims priority of application No. 202022891295.X (CN), filed on Dec. 2, 2020; and application No. 202211199070.5 (CN), filed on Sep. 29, 2022.
Prior Publication US 2023/0374916 A1, Nov. 23, 2023
Int. Cl. F01N 13/08 (2010.01); F01D 25/30 (2006.01); F02C 7/24 (2006.01); E21B 43/26 (2006.01)
CPC F01D 25/30 (2013.01) [E21B 43/2607 (2020.05)] 12 Claims
OG exemplary drawing
 
1. An exhaust apparatus of an engine, the engine being provided with a first exhaust outlet, wherein the exhaust apparatus comprises an exhaust muffler, a shroud plate and a cover plate, wherein:
the exhaust muffler is provided at the first exhaust outlet, and the exhaust muffler is provided with a second exhaust outlet, the shroud plate is provided at the second exhaust outlet, and the shroud plate is movably connected to the exhaust muffler, the shroud plate is movable between a first position and a second position relative to the exhaust muffler, and the cover plate is rotationally connected to the exhaust muffler to close or open the second exhaust outlet; and
when the shroud plate moves to the first position relative to the exhaust muffler and the cover plate opens the second exhaust outlet, the shroud plate and the cover plate forming a heightening tube, the heightening tube communicating with the second exhaust outlet, and an upper port of the heightening tube being positionally higher than the second exhaust outlet.