CN2421637Y

CN2421637Y - Tester for core hydration strength

Info

Publication number: CN2421637Y
Application number: CN 00222673
Authority: CN
Inventors: 侯勤立; 梁大川; 崔茂荣
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2000-03-30
Filing date: 2000-03-30
Publication date: 2001-02-28
Anticipated expiration: 2010-03-30

Abstract

The utility model relates to an instrument for testing core intensity change in the process of hydration, which is composed of an electronic scale, a core sample cup, a probe, a micrometer head, a transmission rod, a transmission belt, a synchronous pulley, a low speed synchromotor and a miniature printer. The utility model is characterized in that the low speed synchromotor is connected with the synchronous pulley, the transmission rod is driven by the transmission belt and the transmission rod rotates to drive the micrometer head to rotate and move downwards. The probe moves downwards at a constant speed and contacts a core, and the load can be reflected by the electronic scale. Different parameters are printed by the miniature printer, and curves are drawn by the miniature printer. Along with the change of the depth and the strength of penetrating samples, consequently, the intensity of the core in different horizons can be analyzed in the process of hydration.

Description

Rock core aquation intensity measuring device

The utility model relates to a kind of evaluation appts of rock core in the hydration process Strength Changes that be used for measuring, rock core aquation intensity measuring device when belonging to appraisal drilling liquid stabilizing borehole.

Domestic this class evaluation method and evaluation means of not setting up does not as yet also have a kind of rock core of measuring in hydration process, the testing tool of all kinds of different hydrated sheath rock core Strength Changes at present.Abroad, the penetrometer of the automatic mensuration rock hardness of people such as U.S. AJRitter design, be that to go into the rock core degree of depth by the constant speed pin that the probe cone divides with 0.5mm/ be 0.3 centimetre, be recorded in the size that shows power on the Libra, go out the hardness of rock core by Computer Processing.It is to adopt lever principle that its pin is gone into mode, rotates the lifting arm of force by the motor constant speed and realizes what pin was gone into.Its major defect is that what to write down on Libra is the size of power, must just can draw the hardness of rock core by computing; Because be to promote the arm of force to realize that pin goes into, the accuracy of data is relatively poor.

The purpose of this utility model is to provide a kind of instrument of measuring rock core Strength Changes in hydration process, being used for analyzing in the reduction degree of drilling process shale aquation intensity and the ability of drilling fluid inhibition shale aquation, is the tester of the novel evaluation method of appraisal drilling liquid stabilizing borehole.

Groundwork principle of the present utility model is to adopt the rotation of low speed synchromotor constant speed to drive the synchronous pulley rotation, and taking by synchrodrive drives another synchronous pulley that sliding shaft sleeve is housed rotation.Have sleeve gear on the plane trundle is housed, when trundle with have sliding tray cam slide when engagement cover, promptly drive the drive link rotation that is installed with lateral pin in the middle of the slip cap of sliding tray.Drive link connects with the milscale head, and to bottom offset, the downward pin of probe that promotes to be equipped with pressure spring is again gone into when drive link rotates.The core sample cup horizontal that is equipped with through after the aquation is placed on the electronics Libra that LOAD CELLS is housed, and when the probe that moves down when constant speed contacted with the sample of storing, the electronics Libra promptly reflected load.Pin is gone into load and is converted electric signal output to by LOAD CELLS, becomes digital signal by the D/A analog to digital conversion, demonstrates impulsive load by the circuit display board; While mini-printer curve plotting.What this curve x direction of principal axis was represented is the equivalent depth (it is the function of time and motor speed) of sample, what the y direction of principal axis was represented is the intensity of sample, along with differing needles is gone into the degree of depth and the Strength Changes of sample, thereby analyze rock core in hydration process, the intensity of different layers position.

The utility model is by the following technical solutions: rock core aquation intensity measuring device mainly is made up of electronics Libra (LOAD CELLS) 1, core sample cup 2, probe 3, milscale head 5, drive link 6, driving-belt 7, synchronous pulley 8, low speed synchromotor 9 and mini-printer 12.Its technical characterictic is: low speed synchromotor 9 connects with synchronous pulley 8, drive drive link 6 rotations by driving-belt 7, drive link 6 is connected with milscale head 5, and drive link 6 rotation promptly drives 5 rotations of milscale head to bottom offset, and the probe 3 downward pins that promote to be equipped with pressure spring 4 are gone into; Rock core after the aquation is put into core sample cup 2 and is flat on the electronics Libra 1 that LOAD CELLS is housed, the electronics Libra reflected load when the probe that moves down when constant speed 3 contacted with core sample, load converts electric signal output to by LOAD CELLS, is transferred to mini-printer 12 and prints curve plotting.

The utlity model has following useful effect: when (1) contacts with core sample owing to the employing probe, by electronics Libra reflection load, convert electric signal output to by LOAD CELLS again, the gained data are more accurate; (2) the load electric signal becomes digital signal by the D/A analog to digital conversion, demonstrate impulsive load by the circuit display board, the electric signal of analog quantity is transferred to the processing of mini-printer process single-chip microcomputer and prints different parameters and printing curve plotting, the intensity that can directly read sample simultaneously; (3) mini-printer is printed the curve of drawing out, and can analyze rock core in hydration process, the intensity of different layers position.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a general structure synoptic diagram of the present utility model.Among the figure: 1. electronics Libra (LOAD CELLS), 2. core sample cup, 3. probe, 4. pressure spring, 5. milscale head, 6. drive link, 7. driving-belt, 8. synchronous pulley, 9. low speed synchromotor, 10. lifting column, 11. lift adjustment turn-knobs.

The utility model is mainly used in measures the Strength Changes of rock core in hydration process.The rock core that is equipped with through after the aquation is put into core sample cup 2, and horizontal is placed on the electronics Libra 1 that LOAD CELLS is housed.Energized, low speed synchromotor 9 rotates, and constant speed drives synchronous pulley 8 rotations.Drive another synchronous pulley that sliding shaft sleeve is housed rotation by driving-belt 7, a trundle is equipped with on the plane on sliding shaft sleeve, when trundle when having the cam slide cover engagement of sliding tray, promptly drive and be installed with 6 rotations of groove pin drive link in the middle of the chute cover.When drive link 6 rotation promptly drives 5 rotations of milscale head to bottom offset, the probe 3 downward pins that promote to be equipped with pressure spring 4 are gone into.When the probe 3 that moves down when constant speed contacted with the core sample of putting, the electronics Libra promptly reflected load.Go into different depth and different loads reflects by electronics Libra 1 and milscale head 5 according to pin.Needle penetration is read by the scale of milscale head; Load changes electric signal output into by LOAD CELLS.The D/A analog to digital conversion of leading up to becomes digital signal, demonstrates impulsive load by the circuit display board; The electric signal of another road analog quantity is transferred to mini-printer 12 simultaneously, handles through single-chip microcomputer and prints different parameters and print curve plotting.Along with differing needles is gone into the degree of depth and the Strength Changes of sample, thereby analyze the intensity of rock core different layers position in hydration process.

Claims

1. rock core aquation intensity measuring device, mainly form by electronics Libra (1), core sample cup (2), probe (3), milscale head (5), drive link (6), driving-belt (7), synchronous pulley (8), low speed synchromotor (9), mini-printer (12), it is characterized in that: low speed synchromotor (9) connects with synchronous pulley (8), drives drive link (6) by driving-belt (7); Drive link (6) is connected with milscale head (5), and drive link (6) rotation promptly drives milscale head (5) rotation to bottom offset; The probe that constant speed moves down (3) contacts with rock core in the core sample cup (2), and electronics Libra (1) promptly reflects load, and load is transferred to mini-printer (12) and prints different parameters and print curve plotting.