US 11,873,706 B2
Fluid separating device
Junhong Chen, Sichuan (CN); Shufei Liu, Sichuan (CN); Shice Su, Sichuan (CN); Hansen Liu, Sichuan (CN); and Xiangmeike Liu, Sichuan (CN)
Assigned to CHENGDU BISON TECHNOLOGY CO., LTD., Chengdu (CN)
Appl. No. 16/643,533
Filed by CHENGDU BISON TECHNOLOGY CO., LTD., Sichuan (CN)
PCT Filed Sep. 5, 2018, PCT No. PCT/CN2018/104241
§ 371(c)(1), (2) Date Feb. 29, 2020,
PCT Pub. No. WO2019/047872, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. 201710794280.1 (CN), filed on Sep. 6, 2017.
Prior Publication US 2020/0190956 A1, Jun. 18, 2020
Int. Cl. E21B 43/38 (2006.01)
CPC E21B 43/38 (2013.01) 13 Claims
OG exemplary drawing
 
1. A fluid separating device, comprising:
a cylinder;
a plurality of separators disposed around the cylinder;
a first elastic piece, disposed between one of the separators and the cylinder, and applying a first elastic force to the separator outward in a radial direction of the cylinder;
a mandrel, passing through the cylinder axially and configured to reciprocate between an expanded position and a contracted position in an axial direction of the cylinder;
an elastic energy storage device, slidably passing through the cylinder along the radial direction of the cylinder, the elastic energy storage device having one end connected to the mandrel and another end connected to the separator, the elastic energy storage device being configured to apply a third elastic force to the mandrel in a direction from the contracted position to the expanded position;
a first locking structure disposed on the cylinder; and
a second locking structure disposed on the mandrel;
wherein, when the mandrel moves toward the contracted position, the elastic energy storage device is compressed and drives the separator to move inward along the radial direction of the cylinder; and when the mandrel is in the contracted position, the first locking structure and the second locking structure are detachably fitted to each other to maintain the mandrel in the contracted position,
wherein the elastic energy storage device comprises a guiding post and an energy storage spring; the guiding post can slidably penetrate the cylinder along the radial direction of the cylinder; one end of the guiding post is connected to the separator, another end of the guiding post is connected to one end of the energy storage spring; and another end of the energy storage spring is connected to the mandrel.