CN104749038A

CN104749038A - Rock mechanics three-axis testing high-pressure kettle

Info

Publication number: CN104749038A
Application number: CN201310738050.5A
Authority: CN
Inventors: 韩巧荣; 李宪文; 马旭; 古永红; 丁勇; 刘建安; 周少伟; 赵倩云; 李小玲; 李雪原; 郝瑞芬; 刘晓瑞; 叶亮
Original assignee: China Petroleum and Natural Gas Co Ltd
Current assignee: China Petroleum and Natural Gas Co Ltd
Priority date: 2013-12-26
Filing date: 2013-12-26
Publication date: 2015-07-01

Abstract

The invention discloses a rock mechanics three-axis testing high-pressure kettle, is designed for solving the problems of high machining cost, relatively large size and the like of equipment. A kettle body of the high-pressure kettle is arranged in a three-axis rack; a kettle cover with a central piston hole is connected and arranged at the top end of the kettle body, and a bearing base sealed by an annular sealing ring is connected to the bottom end of the kettle body; an axial loading piston sealed by an annular sealing ring is arranged in the kettle body, and a balance communication tube for communicating an upper space and a lower space of the piston is arranged on the sidewall of the kettle body; a piston rod on the upper part of the axial loading piston penetrates through the central piston hole in the kettle cover and sealed by the annular sealing ring, and the top end of the piston rod is connected with the top surface of the three-axis rack. The high-pressure kettle realizes the pressure self-balance by the balance communication tube arranged on the kettle body, and thus the pressure born by the three-axis rack is reduced, an application of the three-axis rack can be relatively economic, relatively simple and relatively convenient, and relatively safe, the manufacturing cost spent on the high-pressure kettle is greatly saved, and a three-axis compression experiment is facilitated.

Description

Rock mechanics three axle testing high voltage still

Technical field

The present invention relates to a kind of rock mechanics three axle testing high voltage still, belong to test facility technical field.

Background technology

Conventional rock mechanics three axle testing high voltage still carries out rock sample loading experiment by upper and lower flexible bearing base.In the process loading confined pressure, the upward pressure produced because of confined pressure is all applied in three axle frames, so the frame only possessing enough powerful drag could balance this pressure.Therefore, the manufacture scale of high strength frame is inevitable comparatively large, and put inconvenience, processing cost is also higher.

Summary of the invention

The object of the present invention is to provide a kind of rock mechanics three axle testing high voltage still, to solve the problems such as the high and volume of equipment processing cost is larger.

Concrete technology contents of the present invention is as follows:

This autoclave kettle is located in three axle frames; Kettle top is connected with the kettle cover in center piston hole, and bottom connects the bearing base sealed by grommet type seals; Be provided with the axis sealed by grommet type seals in kettle and load piston, kettle sidewall is provided with the balance communicating pipe being communicated with piston upper and lower space; The piston rod axially loading upper piston area passes center piston hole on kettle cover, that sealed by grommet type seals, and piston rod top connects three axle frame end faces.

This autoclave realizes pressure self-balancing by the balance communicating pipe be located on kettle, thus the pressure that three axle frames carry can be alleviated, make the application of three axle frames more economically, easy and safety, significantly can save the manufacturing cost of autoclave, facilitate triaxial compression test.

Accompanying drawing explanation

Fig. 1 is traditional rock mechanics three axle testing high voltage still structural representation.

Fig. 2 is rock mechanics three axle testing high voltage still structural representation.

Embodiment

Embodiment:

With reference to Fig. 2, embodiments of the invention are further illustrated:

This autoclave mainly comprises three axle frames 1, pin 2, kettle cover 3, axially loads piston 4, kettle 5, grommet type seals 6, rock sample 7, bearing base 8 and balance communicating pipe 9;

Kettle 5 is located in three axle frames 1; Kettle 5 top is connected with the kettle cover 3 in center piston hole by pin 2, and bottom connects the bearing base 8 sealed by grommet type seals 6; Be provided with the axis sealed by grommet type seals 6 in kettle 5 and load piston 4, kettle 5 sidewall is provided with the balance communicating pipe 9 being communicated with piston upper and lower space; The piston rod axially loading piston 4 top passes center piston hole on kettle cover 3, that sealed by grommet type seals 6, and piston rod top connects three axle frame 1 end faces.

During test, be placed on by rock sample 7 and axially load between piston 4 and bearing base 8, move down piston and load, meanwhile, be filled with highly pressurised liquid and carry out confined pressure loading in kettle 5, now, piston realizes the self-equilibrating of its upper and lower pressure communicating pipe 9 by balance.

Claims

1. a rock mechanics three axle testing high voltage still, is characterized in that:

This autoclave kettle (5) is located in three axle frames (1); Kettle (5) top is connected with the kettle cover (3) in center piston hole, and bottom connects the bearing base (8) sealed by grommet type seals (6); Be provided with the axis sealed by grommet type seals (6) in kettle (5) and load piston (4), kettle (5) sidewall is provided with the balance communicating pipe (9) being communicated with piston upper and lower space; The piston rod axially loading piston (4) top passes center piston hole on kettle cover (3), that sealed by grommet type seals (6), and piston rod top connects three axle frame (1) end faces.