最新毕业设计-直动式液压往复泵设计说明书

毕业设计-直动式液压往复泵设计说明书

The Design of Hydraulically-actuated Reciprocating Pump Abstract: This graduation project is to the hydraulically-actuated reciprocating pump design.

The

reciprocating pump is draws support the piston/plunger in fluid cylinder work cavity reciprocal motion, causes the work cavity volume to have the periodic variation toachieve the transportation liquid the goal.

It

is the equipment transforms the mechanical energy as the fluid pressure energy.

This

kind pumps the current capacity is only decided by the work cavity volume change value and in the unit time change number of times, and in theoretically has nothing to do with the delivery pressure.

Hydraulic

reciprocating pump is driven by variable pumps and pressure liquid.

In

oil drilling, oil field injection of chemical agents hydraulically-actuated reciprocating pump play an irreplaceable role.

However,

the conventional single-acting piston triplex reciprocating pump too

bulky, difficult to maintain, and has a high flow inequality.

It

has less function to be used for current industrial development.

This

design through completes to the known data analysis aswell as the reference correlation data, this hydraulically-actuated reciprocating pump is the three-cylinder single-acting pump, mainly partially is composed by the fluid body and the Hydraulic cylinder.

Through

its pump tube, valve and other parts and complete machine for specific analysis and calculation, has completed this design task.

Key

word: Hydraulically-actuated reciprocating pump；Pump valve；Plunger；design 前言往复泵是工业生产中的重要设备，已有100多年的历史。在石油钻采领域，往复泵主要用于钻井泵，注水泵，压裂泵等。目前在石油钻机上广泛应用的是机动往复泵，即使用柴油机或电机通过皮带，经减速器减速后带动曲柄连杆机构及活塞运动，实现吸液和排液。

由于机动往复泵设备笨重，维修难度高，国外在20世纪80年代末开始研制液压往复泵，在结构上打破了往复泵的传统模式。其结构简单，维修方便，具有很高的经济效益。

本次毕业设计通过查阅相关资料和老师及同学的指导与帮助，完

成了直动式液压往复泵泵筒、泵阀、机架等零部件及整机的设计。本设计是以现在油田使用的三联单作用往复泵为基础，进行技术创新与改造，使其能够满足更高的性能需求。其中最大的改造是对驱动系统的改造，采用进口液压钻井设备上的驱动系统，其使用了一种可控的多缸连续往复换向阀。

由于学识和经验不足，设计中肯定会存在很多错误与不足，恳请批评指正。

王廷晖2011年5月目录1 绪论1 1.1

往复泵的结构和工作原理1

1.2

往复泵的特点3

1.3

往复泵的分类4

1.4

液压往复泵5

1.5

往复泵的应用于发展5

2 液压往复泵总体方案设计8 2.1

液压往复泵的工作原理8

2.2

往复泵整体结构设计11

2.3

液压泵的选择11

2.4

液力端结构形式的选择11

2.5

动力端和液力端的链接设计13

2.6

功能原理分析13

3 往复泵主要结构参数的选择与确定1

4 3.1 往复泵容积效率的选择14

3.2

柱塞平均速度的选择15

3.3

每分钟往复次数和行程长度的选定16

3.4

柱塞直径的确定16

3.5

程径比的选择17

3.6

泵动力端活塞直径确定17

3.7

吸入和排出管内径、的选取17

4