Motion analysis of conjugate side about opposed biconical cone screw high-pressure seawater hydraulic pump

Author(s):  
Zheng Gang ◽  
Cao Xiuxia ◽  
Wang Xinhua ◽  
Sun Shuwen
1975 ◽  
Author(s):  
D. A. Chirichella ◽  
R. W. Jack ◽  
E. A. Baniak

Mechanika ◽  
2011 ◽  
Vol 17 (5) ◽  
Author(s):  
Xinhua Wang ◽  
Xiuxia Cao ◽  
Gang Zheng ◽  
Shuwen Sun ◽  
Zhijie Li

2013 ◽  
Vol 440 ◽  
pp. 222-227
Author(s):  
Bao Ping Cai ◽  
Yong Hong Liu ◽  
Yan Ting Zhang ◽  
Jiang Tao Ma ◽  
Yun Wei Zhang ◽  
...  

A test system for subsea tree equipment is developed for tree function testing after repair. The test system mainly consists of hydraulic unit and electric unit. The hydraulic unit is developed by revamping an old hydraulic power unit, which consist of six components, including reservoir, flush/fill pump circuit, high pressure hydraulic pump circuits, accumulator group, hydraulic supply circuits and fluid return circuit. The electric unit for subsea tree is developed by using NI Compact DAQ system, In order to control the hydraulic unit and acquire the pressure signals easily. The test procedures for flowloops, valve, and hydrostatic hydraulic pressure cycling are proposed based on the factory acceptance testing of subsea tree. A test for a repaired subsea tree is performed by using the developed test system. The results show that the repaired subsea tree is good enough after repair, and verify that the developed test system works well.


2021 ◽  
Author(s):  
Weidong Zhou ◽  
Luopeng Li ◽  
Zizhen Wang ◽  
Xianbo Lei ◽  
Weidong Zhang ◽  
...  

2012 ◽  
Vol 197 ◽  
pp. 174-178 ◽  
Author(s):  
Xin Hua Wang ◽  
Xiu Xia Cao ◽  
Shu Wen Sun ◽  
Yan Gao

The main components of the opposed biconinal cone screw high-pressure seawater hydraulic pump is the rubber bush and metal cone screw, and the interaction of the bush and cone screw is one of the main factors affecting the novel pump performance. The deformation and stress of the bush and cone screw under the initial interference is analyzed by the nonlinear finite element analysis. The analysis shows that: under the effect of the initial interference, large displacement is present to the radial surface of the cone screw, and the displacement of the radial surface mainly affects the displacement vector sum of the cone screw, and the deformation decreases gradually from the middle to the ends of the cone screw, while the cone screw is bending; the deformation in three direction of the bush is close to each other, but the location of the maximum displacement in each direction is different; with the shrink range increasing, the deformation of the cone screw and bush increases, but the deformation of the cone screw is much smaller than that of bush, so the deformation of the bush mainly affects the seal between the cone screw and bush, and the shrink range between the cone screw and bush decreases because of the deformation of the bush. Over the role of the interference force, the maximum von mises stress of the cone screw is an order larger than that of bush, and the maximum von mises stress both increases with the shrink range increasing; although shrink range is different, the location of the maximum von mises about the cone screw and bush is the same.


2022 ◽  
Vol 8 ◽  
pp. 1339-1349
Author(s):  
Weidong Zhou ◽  
Luopeng Li ◽  
Zizhen Wang ◽  
Xianbo Lei ◽  
Weidong Zhang ◽  
...  

2013 ◽  
Vol 310 ◽  
pp. 287-293 ◽  
Author(s):  
Xin Hua Wang ◽  
Zhi Ben Gong ◽  
Li Wei Wang ◽  
Shun Wen Sun ◽  
Gang Zheng

The rotor and stator were major components of the opposed biconinal cone screw high pressure seawater hydraulic pump, which precision of design and manufacture was particularly high, and the combining status between the stator and rotor has a significant impact on the performance of the new type pump, so the related research on above problems are carried out. In order to satisfy the demands of design efficiency and manufacture decision, a fast and simple way was presented to model 3D cone screw and bushing. Three-dimensional space Cartesian coordinates of cone screw and bushing profile with MATLAB programming were obtained according to the cone screw and bushing surface equation and the design parameters,3D curves of cone screw and bushing with MATLAB were rendered, and the feature point space coordinates were imported to Pro/Engineer so as to build cone screw and bushing solid model. Finally, making virtual assembly and checking interference on the screw and the bushing were necessary. The proposed method can make the complex 3D modeling more accurate, feasible and efficient.


Author(s):  
Alissa Montzka ◽  
Nathan Epstein ◽  
Michael Rannow ◽  
Thomas R. Chase ◽  
Perry Y. Li

Abstract This work describes an efficient means to adjust the power level of an axial piston hydraulic pump/motor. Conventionally, the displacement of a piston pump is varied by changing the stroke length of each piston. Since the losses do not decrease proportionally to the displacement, the efficiency is low at low displacements. Here, with partial-stroke piston pressurization (PSPP), displacement is varied by changing the portion of the piston stroke over which the piston is subjected to high pressure. Since leakage and friction losses drop as the displacement is decreased, higher efficiency is achieved at low displacements with PSPP. While other systems have implemented PSPP with electric or cam-actuated valves, the pump described in this paper is unique in implementing PSPP by way of a simple, robust hydro-mechanical valve system. Experimental testing of a prototype PSPP pump/motor shows that the full load efficiency is maintained even at low displacements.


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