CN203396650U

CN203396650U - Confining pressure chamber of rock creep tester

Info

Publication number: CN203396650U
Application number: CN201320440114.9U
Authority: CN
Inventors: 谷春华; 尹廷林; 迟成芳; 陈南; 王伟
Original assignee: CHANGCHUN RESEARCH INSTITUTE FOR MECHANICAL SCIENCE Co Ltd
Current assignee: CHANGCHUN RESEARCH INSTITUTE FOR MECHANICAL SCIENCE Co Ltd
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2014-01-15
Anticipated expiration: 2023-07-24

Abstract

The utility model relates to a confining pressure chamber of a rock creep tester, belonging to the field of material test equipment. A force sensor is fixedly connected with a host frame through a pull rod and a locking nut, a lifting ring is connected with the host frame through a thread, a protective door is fixedly connected with the host frame through a bolt, a main shaft oil cylinder is arranged in the host frame, a displacement sensor is arranged below the main shaft oil cylinder through a thread, a pressing platform is arranged on a confining pressure chamber base, a porous water pipe is arranged on a bulb pressure rod, and a confining pressure boosting system and a water pressure boosting system are arranged on the confining pressure chamber base through a high-pressure oil pipe. The confining pressure chamber has the advantages that the structure is novel, the precision is unchangeable when a detection axial load is loaded by adopting a method that diameters of the bulb pressure rod and a test sample are equal; the confining pressure chamber is locked in a manner that the confining pressure chamber body is connected with the base through a bearing valve, and is conveniently and rapidly installed; a method that the heating rod is planted in the confining pressure chamber is adopted, the temperature rise speed is high, and the temperature is stable; and axial and radial deformation changes are directly and accurately measured.

Description

The confined pressure chamber of creep of rock test instrument

Technical field

The utility model belongs to material test apparatus field, refers in particular to a kind of confined pressure chamber of detecting and measuring the testing machine of rock sample.

Background technology

The development of rock mechanics is to be accompanied by the development of testing machine and independent with the mechanics of materials gradually all the time, and development, grows up and ripe.In early days, the test of rock mechanics adopts common Material Testing Machine completely, afterwards, the discovery of implosion test machine principle and the birth of implosion test machine, the development of confined pressure three-axis tester, the development of the development of true triaxial test machine, High Temperature High Pressure three-axis tester, and a large amount of correlation test researchs of thereupon carrying out, the characteristic many rarely known by the people that has disclosed rock, rock mass, has promoted the development of rock mechanics subject greatly, becomes there being the new branch of science of material impact in national economy.Along with the mankind are to the developing rapidly of deep resource energy development engineering, in the urgent need to understanding the characteristic of deep rock mass.The ，You Yong balance cylinder, confined pressure chamber of creep of rock test instrument in the past, but while there will be detection axial load in equilibrium process, precision is inadequate; Confined pressure chamber adopts bolt to fix while sealing, convenient not when handling sample; High-pressure medium was heated to adopt in the external heating in confined pressure chamber more, the heat time is long in the past, and temperature control is inaccurate.

Summary of the invention

The utility model provides a kind of confined pressure chamber of creep of rock test instrument, to solve, adopted balance cylinder in the past, while there will be detection axial load in equilibrium process, precision is inadequate, convenient not when handling sample, high-pressure medium is heated to adopt in the external heating in confined pressure chamber more, heat time is long, the problem that temperature control is inaccurate.

The technical solution of the utility model is: power sensor is fixedly connected with main machine frame with set nut by pull bar, hoisting ring is fixedly connected with main machine frame, protective door is fixedly connected with main machine frame by bolt, main shaft oil cylinder is landed in main machine frame, centering spindle is connected with screw with main shaft oil cylinder, displacement transducer screw thread is arranged on main shaft oil cylinder below, oil pipe is connected with main shaft oil cylinder below hydraulic fluid port, main machine frame is fixedly connected with leg by screw, platen is threaded with power sensor lower end, travelling car is landed on supporting track, supporting track is fixedly connected with main machine frame by screw, confined pressure chamber base is landed on travelling car, bottom platen is landed on the base of confined pressure chamber, hole water pipe is arranged on bulb depression bar, there is hole seepage pad bottom platen upper end, there is hole seepage pad bulb depression bar lower end, heat-shrink tube is sleeved on pore water seepage pad, bulb, on the outside surface of bottom platen with diameter, at heat-shrink tube outside surface, Axial extensometer and radial extensometer are installed, heating rod is inserted on upper body, confined pressure chamber, air release is arranged on upper body, confined pressure chamber, between upper body, confined pressure chamber and confined pressure chamber base, there is O-ring seal, upper body, confined pressure chamber and confined pressure chamber base are hung stressed joint by carrying lobe, anti-knocking over and the outside socket of carrying lobe, electric block is arranged on bracing frame, bracing frame is fixedly connected with the upper surface of main machine frame by bolt, confined pressure pressure charging system and hydraulic pressure pressure charging system are all arranged on the base of confined pressure chamber by high-pressure oil pipe.

The utility model has the advantage of: novel structure, the method that has adopted bulb depression bar to equate with specimen finish, guarantees that precision was constant when loading detection axial load; The locking of confined pressure chamber has adopted carrying lobe that confined pressure chamber body and pedestal are hung to the form connecting, quick and easy for installation; Adopted heating rod to implant the method in the body of confined pressure chamber, the close medium of heating rod, quick heating, temperature stabilization; Adopt Axial extensometer and circumference extensometer directly to accurately measure axially and radial deformation variation.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the A-A cut-open view of Fig. 1;

Fig. 3 is the B-B cut-open view of Fig. 2;

In figure, set nut 1, hoisting ring 2, pull bar 3, protective door 4, main machine frame 5, power sensor 6, air release 7, platen 8, hole water pipe 9, bulb depression bar 10, upper body, confined pressure chamber 11, heat-shrink tube 12, pore water seepage pad 13, bottom platen 14, O-ring seal 15, confined pressure chamber base 16, travelling car 17, main shaft oil cylinder 18, centering spindle 19, displacement transducer 20, leg 21, oil pipe 22, supporting track 23, anti-knocking over 24, carrying lobe 25, electric block 26, bracing frame 27, heating rod 28, Axial extensometer 29, radial extensometer 30, confined pressure pressure charging system 31, hydraulic pressure pressure charging system 32, rock sample 33.

Embodiment

Power sensor 6 is fixedly connected with main machine frame 5 with set nut 1 by pull bar 3, hoisting ring 2 is fixedly connected with main machine frame 5, protective door 4 is fixedly connected with main machine frame 5 by bolt, main shaft oil cylinder 18 is landed in main machine frame 5, centering spindle 19 is connected with main shaft oil cylinder 18 use screws, displacement transducer 20 screw threads are arranged on main shaft oil cylinder 18 belows, oil pipe 22 is connected with main shaft oil cylinder 18 below hydraulic fluid ports, main machine frame 5 is fixedly connected with leg 21 by screw, platen 8 is threaded with power sensor 6 lower ends, travelling car 17 is landed on supporting track 23, supporting track 23 is fixedly connected with main machine frame 5 by screw, confined pressure chamber base 16 is landed on travelling car 17, bottom platen 14 is landed on confined pressure chamber base 16, hole water pipe 9 is arranged on bulb depression bar 10, there is hole seepage pad 13 bottom platen 14 upper ends, there is hole seepage pad 13 bulb depression bar 10 lower ends, heat-shrink tube 12 is sleeved on pore water seepage pad 13, bulb 10, on the outside surface of bottom platen 14 with diameter, at heat-shrink tube 12 outside surfaces, Axial extensometer 29 and radial extensometer 30 are installed, heating rod 28 is inserted on upper body, confined pressure chamber 11, air release 7 is arranged on upper body, confined pressure chamber 11, between upper body, confined pressure chamber 11 and confined pressure chamber base 16, there is O-ring seal 15, upper body, confined pressure chamber 11 hangs stressed joint with confined pressure chamber base 16 by carrying lobe 25, anti-knocking over 24 and the 25 outside sockets of carrying lobe, electric block 26 is arranged on bracing frame 27, bracing frame 27 is fixedly connected with the upper surface of main machine frame 5 by bolt, confined pressure pressure charging system 31 and hydraulic pressure pressure charging system 32 are all arranged on confined pressure chamber base 16 by high-pressure oil pipe.

The course of work of the present utility model:

After sample is installed by figure, dolly and confining pressure device are pushed into testing position, first controlling main shaft oil cylinder applies axle pressure and reaches certain desired value, carrying out confining force stablizes constant, control again confined pressure pressure charging system and rush full pressure medium in confined pressure system, after being full of medium, heat up, carry out temperature control, by confined pressure pressure charging system, to confined pressure, partly pour pressure afterwards, meet the requirements of confined pressure force value, keep force value to stablize constant, the rock sample 33 up and down upper pore water seepage pad of each pad is placed on bottom platen, finally with hydraulic pressure pressure charging system to rock sample 33 inside be set up and under carry out space seepage and suppress, remain on certain force value.

Claims

1. the confined pressure chamber of a creep of rock test instrument, it is characterized in that: power sensor is fixedly connected with main machine frame with set nut by pull bar, hoisting ring is fixedly connected with main machine frame, protective door is fixedly connected with main machine frame by bolt, main shaft oil cylinder is landed in main machine frame, centering spindle is connected with screw with main shaft oil cylinder, displacement transducer screw thread is arranged on main shaft oil cylinder below, oil pipe is connected with main shaft oil cylinder below hydraulic fluid port, main machine frame is fixedly connected with leg by screw, platen is threaded with power sensor lower end, travelling car is landed on supporting track, supporting track is fixedly connected with main machine frame by screw, confined pressure chamber base is landed on travelling car, bottom platen is landed on the base of confined pressure chamber, hole water pipe is arranged on bulb depression bar, there is hole seepage pad bottom platen upper end, there is hole seepage pad bulb depression bar lower end, heat-shrink tube is sleeved on pore water seepage pad, bulb, on the outside surface of bottom platen with diameter, at heat-shrink tube outside surface, Axial extensometer and radial extensometer are installed, heating rod is inserted on upper body, confined pressure chamber, air release is arranged on upper body, confined pressure chamber, between upper body, confined pressure chamber and confined pressure chamber base, there is O-ring seal, upper body, confined pressure chamber and confined pressure chamber base are hung stressed joint by carrying lobe, anti-knocking over and the outside socket of carrying lobe, electric block is arranged on bracing frame, bracing frame is fixedly connected with the upper surface of main machine frame by bolt, confined pressure pressure charging system and hydraulic pressure pressure charging system are all arranged on the base of confined pressure chamber by high-pressure oil pipe.