CN116008124A - Full-automatic funnel viscosity and rheological property measuring instrument and testing method - Google Patents
Full-automatic funnel viscosity and rheological property measuring instrument and testing method Download PDFInfo
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- CN116008124A CN116008124A CN202111235770.0A CN202111235770A CN116008124A CN 116008124 A CN116008124 A CN 116008124A CN 202111235770 A CN202111235770 A CN 202111235770A CN 116008124 A CN116008124 A CN 116008124A
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Abstract
The invention relates to the technical field of viscosity and rheological property measuring devices and testing methods, in particular to a full-automatic funnel viscosity and rheological property measuring device and a testing method, wherein the full-automatic funnel viscosity and rheological property measuring device comprises a viscosity testing mechanism, a rheological property testing mechanism and a bearing bracket; the viscosity testing mechanism comprises a conical funnel and a slurry tank, wherein a grouting pipe is communicated with the upper part of the conical funnel, and an outlet at the bottom of the conical funnel is fixed in the slurry tank. The measuring instrument integrates the viscosity testing mechanism and the rheological testing mechanism, has the functions of viscosity testing and rheological testing, has compact structure and functions, is convenient to carry, can realize the conventional performance repeated testing of full-automatic drilling fluid, has repeated operation consistency, greatly saves personnel cost, lightens personnel labor intensity, controls the running state of the whole measuring instrument through the singlechip, realizes automatic measurement, and has strong popularization and application values.
Description
Technical Field
The invention relates to the technical field of viscosity and rheological property measuring devices and testing methods, in particular to a full-automatic funnel viscosity and rheological property measuring device and a testing method.
Background
Viscosity is a physical quantity for measuring viscosity of fluid, and measurement of viscosity plays an important role in many fields, and different viscosity measurement methods and instruments are applicable in different fields, and different viscosity measurement methods and different measurement instruments are adopted in different viscosity measurement methods.
Fluid rheology and viscosity measurements are one way to study the behavior of a substance fluid property. The method is a directly available fluid property, and product research and development personnel can do prediction evaluation of product phenomena and behaviors according to the fluid property and obtain rheological data and product behavior relation.
The fluid rheological property and viscosity measuring instrument is a measuring instrument for measuring rheological properties of various fluids, including measuring rheological property curves of Newtonian fluids, apparent viscosities of non-Newtonian fluids, pseudoplastic fluids, plastic fluids, expansion fluids and other non-Newtonian liquids.
At present, a plurality of instruments for measuring viscosity in China exist, and the traditional measuring methods of the viscosity and rheological property of the drilling fluid funnel are to respectively use a densimeter, a funnel viscometer, a six-speed rotary viscometer and other instruments for measurement, so that the testing links are complex in multiple processes, the types of the testing instruments are multiple, the functions are dispersed and the carrying is difficult, the requirements of acquisition of a large amount of performance data of the drilling fluid cannot be met, and the automation and informatization development of the drilling fluid technical service industry are restricted.
Disclosure of Invention
The invention provides a full-automatic funnel viscosity and rheological property measuring instrument and a testing method, which overcome the defects of the prior art and can effectively solve the problems of dispersion and difficult carrying of the functions of the prior viscosity and rheological property measuring instrument; the viscosity test module and the rheological test module are integrated into a whole, so that the device is convenient to carry, the conventional performance repeated test of the full-automatic drilling fluid can be realized, the personnel cost is greatly saved, and the labor intensity of personnel is reduced.
One of the technical schemes of the invention is realized by the following measures: a full-automatic funnel viscosity and rheological property measuring instrument comprises a viscosity testing mechanism, a rheological property testing mechanism and a bearing bracket; the viscosity testing mechanism comprises a conical funnel and a slurry tank, a grouting pipe is communicated with the upper part of the conical funnel, the outlet at the bottom of the conical funnel is fixed in the slurry tank, a high liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel reaches a liquid level upper limit set value and a low liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel descends to a liquid level lower limit set value are respectively arranged on the conical funnel, and a funnel plugging mechanism capable of plugging the outlet at the bottom of the conical funnel is fixedly arranged at the outlet at the bottom of the conical funnel; the rheological test mechanism comprises an inner cylinder, a lower rotary cylinder, a rheological test module, a vertical movement driving mechanism capable of driving the lower rotary cylinder to move up and down and a rotation driving mechanism capable of driving the lower rotary cylinder to rotate, an inner cylinder shaft is fixed on the inner cylinder, the upper part of the inner cylinder shaft is fixedly connected with a bearing bracket through a deformation piece, the rheological test module is fixed on the deformation piece, one end of the rotation driving mechanism is connected with the lower rotary cylinder, a working hole is formed in the top of a mud tank, the lower rotary cylinder can vertically penetrate through the working hole, the lower rotary cylinder is located outside the inner cylinder, and a gap is reserved between the lower rotary cylinder and the inner cylinder.
The following are further optimizations and/or improvements to one of the above-described inventive solutions:
above-mentioned funnel shutoff mechanism includes funnel taper plug, taper plug pole and can drive the push rod actuating mechanism that the taper plug pole left and right sides moved, and the taper plug pole is the L type, is provided with taper pole operation slot hole at the mud pit top in the toper funnel outside, and the taper plug pole is the slope form and stretches into the mud pit from taper pole operation slot hole, and the short section of L type taper plug pole and funnel taper plug bottom fixed connection, and the funnel taper plug is installed in toper funnel bottom export, and push rod actuating mechanism includes push rod driving motor, and push rod driving motor's power take off end and the long section fixed connection of L type taper plug pole.
The vertical movement driving mechanism comprises a through type screw rod stepping motor, a pair of sliding rails and a supporting frame, wherein the left end of the supporting frame is fixedly connected with the lower rotary drum, the pair of sliding rails are respectively fixed on the front side and the rear side of the bearing support, ball nuts of the through type screw rod stepping motor are fixedly connected with the supporting frame, the upper end of the ball screw rod of the through type screw rod stepping motor is fixedly connected with the bearing support, and sliding blocks corresponding to the sliding rails are respectively arranged on the front side and the rear side of the supporting frame.
Limiting blocks or limit switches are respectively arranged on the upper side and the lower side of the sliding rail.
The rotation driving mechanism comprises a stepping motor and a transmission mechanism, wherein the stepping motor is fixed on the support frame, and the power output end of the stepping motor is connected with the power input end of the transmission mechanism.
The driving mechanism comprises a driving belt wheel, a driven belt wheel and a driving belt, wherein the driving belt wheel is arranged at the power output end of the stepping motor, the driven belt wheel is fixed on the outer side of the lower rotary drum, and the driving belt wheel is connected with the driven belt wheel through the driving belt.
The rheological property testing module comprises a strain gauge, and the deformation piece adopts a spring steel sheet.
The brush and the flushing pipe. At least one flushing pipe is communicated with the top of the conical funnel, and the water outlet of the flushing pipe is tangential to the inner wall surface of the conical funnel.
The brush is fixedly arranged on the inner cylinder shaft above the inner cylinder through a bearing, and at least one outer cylinder flushing pipe capable of flushing the inner wall of the outer cylinder is circumferentially distributed on the outer side of the upper part of the brush.
The above-mentioned mixer. An electric stirrer and a slurry tank liquid level electrode are arranged on the slurry tank; a liquid outlet is arranged at the lower part of the mud tank.
The high liquid level monitoring module is a high electrode for monitoring high liquid level; the low liquid level monitoring module is a low electrode for monitoring low liquid level.
The single chip microcomputer is electrically connected with the control end of the through type screw rod stepping motor, the control end of the electric stirrer, the push rod driving motor, the slurry tank liquid level electrode, the high-level electrode and the low-level electrode respectively.
The second technical scheme of the invention is realized by the following measures: a testing method of full-automatic funnel viscosity and rheological property measuring instrument includes funnel viscosity measurement and rheological property measurement; funnel viscosity measurements were made as follows:
filling slurry into a conical funnel through a grouting pipe, measuring the liquid level of the slurry in the conical funnel by using a high-level electrode and a low-level electrode, determining whether the slurry reaches an upper limit set value of the liquid level by using the high-level electrode, judging that the liquid level reaches the upper limit set value of the liquid level when the conductivity of the high-level electrode is changed severely, driving a conical plug rod by using a push rod to move rightwards, enabling the conical plug rod to drive a funnel conical plug to open, starting to flow out the slurry in the conical funnel after the funnel conical plug is opened, starting to time when the slurry in the conical funnel starts to flow out, and determining whether the required amount of slurry flows out of the conical funnel by judging the conductivity of the low-level electrode during the process; when the conductivity of the low-level electrode changes drastically, the liquid level is low enough to meet the condition of the required outflow, at the moment, stopping timing and recording the time, and calculating the funnel viscosity of the slurry according to the recorded time;
the rheology measurements were performed as follows: all the slurry in the conical hopper is leaked into the slurry tank, the rotary drum is driven by the through screw rod stepping motor to descend to the testing position in the slurry tank, the stepping motor drives the lower rotary drum to rotate at six different speeds, gaps between the lower rotary drum and the middle inner drum are filled with the slurry, the lower rotary drum can drive the slurry to rotate when rotating, the slurry can drive the inner drum to rotate and deviate due to the viscosity of the slurry, so that the spring steel sheet is bent and deformed, the resistance value of the strain gauge adhered to the spring steel sheet is changed and converted into a moment deflection value, and the rheological numerical value measurement is completed.
The following is a further optimization and/or improvement of the second technical scheme of the invention:
after the viscosity measurement and the rheological measurement are finished, cleaning the equipment: the liquid outlet of the slurry tank is opened, after the tested slurry is discharged, the stepping motor drives the lower rotary drum to continuously rotate, the through screw rod stepping motor is started to drive the lower rotary drum to ascend, the inner drum and the brush are in a static state, meanwhile, an outer drum flushing pipe above the brush starts to spray water, the lower rotary drum ascends to a cleaning position, the lower rotary drum is opposite to the brush, the brush is rinsed by clean water, the brush cleans the inner wall of the lower rotary drum, and the remained slurry flows into the slurry tank;
meanwhile, clean water is injected into the conical funnel through the flushing pipe, the clean water starts to clean along the inner wall of the conical funnel, the conical plug of the funnel is in a normally open state, the inflow clean water directly flows into the mud tank, when the clean water in the mud tank reaches a certain liquid level, an electric stirrer on the mud tank starts to stir, and the stirred clean water can clean an inner barrel left in the mud tank; and discharging the cleaning waste liquid from a liquid outlet of the slurry tank, and ending the cleaning work after the cleaning waste liquid is emptied.
The measuring instrument integrates the viscosity testing mechanism and the rheological testing mechanism, has the functions of viscosity testing and rheological testing, has compact structure and functions, is convenient to carry, can realize the conventional performance repeated testing of full-automatic drilling fluid, has repeated operation consistency, greatly saves personnel cost, lightens personnel labor intensity, controls the running state of the whole measuring instrument through the singlechip, realizes automatic measurement, and has strong popularization and application values.
Drawings
Fig. 1 is a schematic diagram of the front view structure of the full-automatic funnel viscosity and rheological property measuring instrument.
Fig. 2 is an enlarged partial cross-sectional schematic view of fig. 1.
Fig. 3 is a schematic perspective view of the full-automatic funnel viscosity and rheology measuring instrument of the invention.
The codes in the drawings are respectively: 1 is a bearing bracket, 2 is a conical funnel, 3 is a slurry tank, 4 is a grouting pipe, 5 is an inner cylinder, 6 is a lower rotary cylinder, 7 is an inner cylinder shaft, 8 is a funnel conical plug, 9 is a conical plug rod, 10 is a conical rod operation long hole, 11 is a through screw rod stepping motor, 12 is a sliding rail, 13 is a supporting frame, 14 is a sliding block, 15 is a stepping motor, 16 is a driven pulley, 17 is a driving belt, 18 is a spring steel sheet, 19 is a flushing pipe, 20 is an outer cylinder flushing pipe, 21 is a brush, 22 is an electric stirrer, 23 is a high-position electrode, 24 is a low-position electrode, 25 is a ball nut, and 26 is a ball screw.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described below with reference to examples:
example 1: as shown in fig. 1 to 3, the full-automatic funnel viscosity and rheological property measuring instrument comprises a viscosity testing mechanism, a rheological property testing mechanism and a bearing bracket 1; the viscosity testing mechanism comprises a conical funnel 2 and a slurry tank 3, wherein a grouting pipe 4 is communicated with the upper part of the conical funnel 2, the bottom outlet of the conical funnel 2 is fixed in the slurry tank 3, a high liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel 2 reaches a liquid level upper limit set value and a low liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel 2 falls to a liquid level lower limit set value are respectively arranged on the conical funnel 2, and a funnel plugging mechanism capable of plugging the bottom outlet of the conical funnel is fixedly arranged at the bottom outlet of the conical funnel 2; the rheological test mechanism comprises an inner cylinder 5, a lower rotary cylinder 6, a rheological test module, a vertical movement driving mechanism capable of driving the lower rotary cylinder 6 to move up and down and a rotation driving mechanism capable of driving the lower rotary cylinder 6 to rotate, an inner cylinder shaft 7 is fixed on the inner cylinder 5, the upper portion of the inner cylinder shaft 7 is fixedly connected with a bearing bracket 1 through a deformation piece, the rheological test module is fixed on the deformation piece, one end of the rotation driving mechanism is connected with the lower rotary cylinder 6, a working hole is formed in the top of a mud tank 3, the lower rotary cylinder 6 can vertically penetrate through the working hole, the lower rotary cylinder 6 is located outside the inner cylinder 5, and a gap is reserved between the lower rotary cylinder 6 and the inner cylinder 5.
The measuring instrument integrates the viscosity testing mechanism and the rheological testing mechanism, has the functions of viscosity testing and rheological testing, has compact structure and function, is convenient to carry, can realize the repeated testing of the conventional performance of the full-automatic drilling fluid, has repeated operation consistency, greatly saves personnel cost, lightens the labor intensity of personnel, and has strong popularization and application values.
The following are further optimizations and/or improvements to the fully automated funnel viscosity and rheology meter described above:
as shown in fig. 1 to 3, the funnel plugging mechanism comprises a funnel taper plug 8, a taper plug rod 9 and a push rod driving mechanism capable of driving the taper plug rod 9 to move left and right, the taper plug rod 9 is of an L shape, a taper rod operation long hole 10 is formed in the top of a mud tank 3 outside the taper funnel 2, the taper plug rod 9 extends into the mud tank 3 from the taper rod operation long hole 10 in an inclined shape, a short section of the L-shaped taper plug rod 9 is fixedly connected with the bottom end of the funnel taper plug 8, the funnel taper plug 8 is mounted at the bottom outlet of the taper funnel 2, the push rod driving mechanism comprises a push rod driving motor, and a power output end of the push rod driving motor is fixedly connected with a long section of the L-shaped taper plug rod 9.
The length of the taper rod operation long hole 10 is determined according to whether the funnel taper plug 8 can open and close the bottom outlet of the taper funnel 2, namely, the left end of the taper rod operation long hole 10 is the stroke end point of the funnel taper plug 8 for closing the bottom outlet of the taper funnel 2, and the right end of the taper rod operation long hole 10 is the stroke end point of the funnel taper plug 8 for opening the bottom outlet of the taper funnel 2. When the push rod driving motor pushes the long section of the L-shaped taper plug rod 9 leftwards to the left end of the taper rod operation long hole 10, the funnel taper plug 8 seals the outlet at the bottom of the taper funnel 2; when the push rod driving motor pushes the long section of the L-shaped taper plug rod 9 to the right end of the taper rod operation long hole 10, the funnel taper plug 8 opens the outlet at the bottom of the taper funnel 2.
As shown in fig. 1 and 3, the vertical movement driving mechanism includes a through screw stepping motor 11, a pair of slide rails 12 and a supporting frame 13, wherein the left end of the supporting frame 13 is fixedly connected with the lower rotary drum 6, the pair of slide rails 12 are respectively fixed on the front side and the rear side of the bearing bracket 1, a ball nut 25 of the through screw stepping motor 11 is fixedly connected with the supporting frame 13, the upper end of a ball screw 26 of the through screw stepping motor 11 is fixedly connected with the bearing bracket 1, and the front side and the rear side of the supporting frame 13 are respectively provided with a sliding block 14 corresponding to the slide rails 12.
The through screw stepping motor 11 is started, the ball nut 25 of the through screw stepping motor 11 moves up and down on the ball screw 26, the sliding block 14 is driven to slide up and down on the sliding rail 12 through the supporting frame 13, and the whole supporting frame 13 moves up and down, so that the lower rotary drum 6 moves up and down. For example, the through screw stepping motor 11 is controlled to rotate forward, the lower drum 6 moves upward, and conversely, the lower drum 6 moves downward. Thereby achieving the purpose of driving the lower drum 6 to move vertically.
The through-type screw stepping motor 11 is a conventionally known and commonly used motor for linear motion.
Limiting blocks or limit switches are respectively arranged on the upper side and the lower side of the sliding rail 12 according to requirements.
The limiting block or limit switch is used for limiting the end point of the sliding up and down of the sliding block 14.
As shown in fig. 1 and 3, the rotation driving mechanism comprises a stepping motor 15 and a transmission mechanism, wherein the stepping motor 15 is fixed on the supporting frame 13, and the power output end of the stepping motor 15 is connected with the power input end of the transmission mechanism.
The stepping motor 15 is started to drive the transmission mechanism, and the lower rotary drum 6 is driven to rotate through the transmission mechanism.
As shown in fig. 1 and 3, the transmission mechanism comprises a driving pulley, a driven pulley 16 and a driving belt 17, wherein the driving pulley is arranged on the power output end of the stepping motor 15, the driven pulley 16 is fixed on the outer side of the lower rotary drum 6, and the driving pulley and the driven pulley 16 are connected through the driving belt 17.
The driving belt wheel drives the driven belt wheel 16 to rotate through the driving belt 17, so that the lower rotary drum 6 is driven to rotate.
As shown in fig. 1, the rheology test module includes a strain gage, with the deformation member being a spring steel sheet 18.
The gap between the lower rotary drum 6 and the inner drum 5 is filled with slurry to be measured, the lower rotary drum 6 can drive the slurry to rotate when rotating, the slurry can drive the inner drum 5 to rotate and deviate due to the viscosity of the slurry, so that the spring steel sheet 18 is bent and deformed, the resistance value of a strain gauge adhered to the spring steel sheet 18 can be changed, and the rheological value of the slurry is calculated through the resistance value change of the strain gauge.
As shown in fig. 1, at least one flushing pipe 19 is communicated with the top of the conical funnel 2, and the water outlet of the flushing pipe 19 is tangential to the inner wall surface of the conical funnel 2.
When the slurry in the conical funnel 2 needs to be cleaned, water is injected through the flushing pipe 19, the conical funnel 2 is cleaned, and the tangential arrangement of the water outlet of the flushing pipe 19 can fully flush the inner wall of the conical funnel 2.
As shown in fig. 1 and 3, the brush is fixedly installed on the inner cylinder shaft 7 above the inner cylinder 5 through a bearing, and at least one outer cylinder flushing pipe 20 capable of flushing the inner wall of the outer cylinder is circumferentially distributed on the outer side of the upper part of the brush.
When the lower drum 6 is moved up to the brush, the lower drum 6 is rotated, and the inner wall of the lower drum 6 is brushed by the brush. And can assist the brush in brushing the lower drum 6 by injecting water into the outer drum flushing pipe 20. The brush tool can adopt a brush 21.
An electric stirrer 22 and a slurry tank liquid level electrode are arranged on the slurry tank 3 according to the need; a liquid outlet is arranged at the lower part of the mud tank 3.
When the mud tank 3 is cleaned, the electric stirrer 22 is started, and the stirred clean water liquid cleans the inner cylinder 5 left in the mud tank 3. The cleaning liquid is discharged through the liquid outlet.
The high liquid level monitoring module adopts a high electrode 23 for monitoring the high liquid level according to the requirement; the low level monitoring module employs a low level electrode 24 for low level.
The high-level electrode 23 and the low-level electrode 24 can be liquid level electrodes.
The singlechip is respectively and electrically connected with the control end of the through screw stepping motor 11, the control end of the stepping motor 15, the control end of the electric stirrer 22, the push rod driving motor, the liquid level electrode of the slurry tank 3, the high-level electrode 23 and the low-level electrode 24 according to the requirements.
The liquid level electrode, the high-level electrode 23 and the low-level electrode 24 of the slurry tank 3 transmit the monitored liquid level information to the singlechip; the control end of the through screw rod stepping motor 11, the control end of the stepping motor 15, the control end of the electric mixer 22 and the push rod driving motor are controlled to work through the singlechip. The running state of the whole measuring instrument is controlled by the singlechip, so that automatic measurement is realized.
Example 2: as shown in fig. 1 to 3, the testing method of the full-automatic funnel viscosity and rheological property measuring instrument comprises funnel viscosity measurement and rheological property measurement; funnel viscosity measurements were made as follows:
filling slurry into the conical funnel 2 through the grouting pipe 4, measuring the liquid level of the slurry in the conical funnel 2 by the high-level electrode 23 and the low-level electrode 24, measuring whether the slurry reaches the upper limit set value of the liquid level by the high-level electrode 23, judging that the liquid level reaches the upper limit set value of the liquid level when the conductivity of the high-level electrode 23 is changed drastically, driving the conical plug rod 9 to move right by the push rod driving motor, enabling the conical plug rod 9 to drive the funnel conical plug 8 to open, starting to flow out the slurry in the conical funnel 2 after the funnel conical plug 8 is opened, starting timing while starting to flow out the slurry in the conical funnel 2, and judging whether the slurry flows out of the conical funnel 2 by the required amount through judging the conductivity of the low-level electrode 24 during the period; when the conductivity of the low-level electrode 24 is changed drastically, the liquid level is lowered to meet the condition of the required outflow, at this time, the timing is stopped and the time taken is recorded, and the funnel viscosity of the slurry is calculated according to the recorded time;
the rheology measurements were performed as follows: all the slurry in the conical hopper 2 is leaked into the slurry tank 3, the rotary drum 6 is driven by the through screw stepping motor 11 to descend to the testing position in the slurry tank 3, the rotary drum 6 is driven by the stepping motor 15 to start rotating at six different speeds, gaps between the rotary drum 6 and the middle inner drum 5 are filled with the slurry, the rotary drum 6 can drive the slurry to rotate when rotating, the slurry can drive the inner drum 5 to rotate and deviate due to the viscosity of the slurry, so that the spring steel sheet 18 is bent and deformed, the resistance of a strain gauge stuck on the spring steel sheet 18 is changed and converted into a moment deflection value, and the rheological numerical measurement is completed.
After the viscosity measurement and the rheological measurement are finished, cleaning the equipment: the liquid outlet of the slurry tank 3 is opened, after the tested slurry is discharged, the stepping motor 15 drives the lower rotary drum 6 to continuously rotate, the through screw stepping motor 11 is started to drive the lower rotary drum 6 to ascend, the inner drum 5 and the brush are in a static state, meanwhile, the outer drum washing pipe 20 above the brush starts to spray water, the lower rotary drum 6 ascends to a cleaning position, the lower rotary drum is opposite to the brush, the brush is rinsed by clean water, the brush cleans the inner wall of the lower rotary drum 6, and the remained slurry flows into the slurry tank 3;
meanwhile, clean water is injected into the conical funnel 2 through the water injecting pipe 19, the clean water starts to clean along the inner wall of the conical funnel 2, the funnel conical plug 8 is in a normally open state, the inflow clean water directly flows into the mud tank 3, when the clean water in the mud tank 3 reaches a certain liquid level, the electric stirrer 22 on the mud tank 3 starts to stir, and the stirred clean water liquid can clean the inner cylinder 5 left in the mud tank 3; the cleaning waste liquid is discharged from the liquid outlet of the slurry tank 3, and the cleaning work is finished after the cleaning waste liquid is emptied.
Example 3: as shown in fig. 1 to 3, the testing method of the full-automatic funnel viscosity and rheological property measuring instrument comprises funnel viscosity measurement and rheological property measurement; funnel viscosity measurements were made as follows:
filling slurry into the conical funnel 2 through the grouting pipe 4, measuring the liquid level of the slurry in the conical funnel 2 by the high-level electrode 23 and the low-level electrode 24, measuring whether the slurry reaches the upper limit set value (1500 ml) of the liquid level by the high-level electrode 23, judging that the liquid level reaches the upper limit set value (1500 ml) of the liquid level when the conductivity of the high-level electrode 23 is changed severely, driving the conical plug rod 9 to move right by the push rod driving motor, enabling the conical plug rod 9 to drive the conical plug 8 of the funnel to open, starting to flow out the slurry in the conical funnel 2 after the conical plug 8 is opened, starting to time when the slurry in the conical funnel 2 starts to flow out, and judging whether 946ml of slurry flows out of the conical funnel 2 by judging the conductivity of the low-level electrode 24 during the time; when the conductivity of the low-level electrode 24 is changed drastically, the liquid level is low enough to meet the condition of 946ml flowing out, at the moment, the timing is stopped, the time is recorded, and the funnel viscosity of the slurry is calculated according to the recorded time;
the rheology measurements were performed as follows: the 1500ml slurry in the conical hopper 2 is completely discharged into the slurry tank 3, the rotary drum 6 is driven by the through screw stepping motor 11 to descend to a testing position in the slurry tank 3, the rotary drum 6 is driven by the stepping motor 15 to start rotating at six different speeds (3 rpm, 6rpm, 100rpm, 200rpm, 300rpm and 600 rpm), a gap of about 1.8 mm exists between the rotary drum 6 and the middle inner drum 5 (slurry can be filled in the gap), the rotary drum 6 can drive the slurry to rotate when rotating, the slurry can drive the inner drum 5 to rotate and deviate due to the viscosity of the slurry, so that the spring steel sheet 18 is bent and deformed, the resistance value of a strain gauge adhered on the spring steel sheet 18 is changed, the resistance value change result is analyzed and output, the torque deflection value is converted, and the numerical measurement is completed.
After the viscosity measurement and the rheological measurement are finished, cleaning the equipment:
after the tested slurry is discharged, the stepping motor 15 drives the lower rotary drum 6 to continuously rotate at the speed of 6rpm, the through screw rod stepping motor 11 is started to drive the lower rotary drum to ascend, the inner drum 5 and the hairbrush 21 are in a static state, meanwhile, 4 outer drum flushing pipes 20 above the hairbrush 21 start to spray water, the lower rotary drum 6 ascends to a cleaning position, at the moment, the lower rotary drum 6 is opposite to the bristle part of the hairbrush 21, the hairbrush 21 is leached by clean water, the inner wall of the lower rotary drum 6 is cleaned by the hairbrush 21, and the remained slurry flows into the slurry tank 3;
meanwhile, clean water starts to be injected into the conical funnel 2 through the water injecting pipe 19, the clean water can start to be spirally cleaned along the inner wall of the conical funnel 2 in a spiral mode, the funnel conical plug 8 is in a normally open state, the inflow clean water directly flows into the mud tank 3, when the clean water in the mud tank 3 reaches a certain liquid level, the electric stirrer 22 on the mud tank 3 starts to stir at a high speed, and the stirred clean water can clean the inner cylinder 5 left in the mud tank 3; the electric stirrer 22 can stir the clean water at the frequency of twice direction conversion per minute to fully wash the inner cylinder 5, after one minute, the washing waste liquid is discharged from the liquid outlet of the slurry tank 3, after evacuation, the above action can be repeated again for three times, the washing is finished, the funnel taper plug 8 and the water outlet of the slurry tank 3 are in an open state, the through screw rod stepping motor 11 and the working parts such as the lower rotary cylinder are positioned at the washing position, and the next test is waited after drying.
The measuring instrument integrates the viscosity testing mechanism and the rheological testing mechanism, has the functions of viscosity testing and rheological testing, has compact structure and functions, is convenient to carry, can realize the conventional performance repeated testing of full-automatic drilling fluid, has repeated operation consistency, greatly saves personnel cost, lightens personnel labor intensity, controls the running state of the whole measuring instrument through the singlechip, realizes automatic measurement, and has strong popularization and application values.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (10)
1. A full-automatic funnel viscosity and rheological property measuring instrument is characterized by comprising a viscosity testing mechanism, a rheological property testing mechanism and a bearing bracket; the viscosity testing mechanism comprises a conical funnel and a slurry tank, a grouting pipe is communicated with the upper part of the conical funnel, the outlet at the bottom of the conical funnel is fixed in the slurry tank, a high liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel reaches a liquid level upper limit set value and a low liquid level monitoring module capable of monitoring that the slurry liquid level of the conical funnel descends to a liquid level lower limit set value are respectively arranged on the conical funnel, and a funnel plugging mechanism capable of plugging the outlet at the bottom of the conical funnel is fixedly arranged at the outlet at the bottom of the conical funnel; the rheological test mechanism comprises an inner cylinder, a lower rotary cylinder, a rheological test module, a vertical movement driving mechanism capable of driving the lower rotary cylinder to move up and down and a rotation driving mechanism capable of driving the lower rotary cylinder to rotate, an inner cylinder shaft is fixed on the inner cylinder, the upper part of the inner cylinder shaft is fixedly connected with a bearing bracket through a deformation piece, the rheological test module is fixed on the deformation piece, one end of the rotation driving mechanism is connected with the lower rotary cylinder, a working hole is formed in the top of a mud tank, the lower rotary cylinder can vertically penetrate through the working hole, the lower rotary cylinder is located outside the inner cylinder, and a gap is reserved between the lower rotary cylinder and the inner cylinder.
2. The full-automatic funnel viscosity and rheological property measuring instrument according to claim 1, wherein the funnel plugging mechanism comprises a funnel taper plug, a taper plug rod and a push rod driving mechanism capable of driving the taper plug rod to move left and right, the taper plug rod is L-shaped, a taper rod operation long hole is formed in the top of a mud tank on the outer side of the taper funnel, the taper plug rod extends into the mud tank from the taper rod operation long hole in an inclined mode, a short section of the L-shaped taper plug rod is fixedly connected with the bottom end of the funnel taper plug, the funnel taper plug is arranged at an outlet at the bottom of the taper funnel, the push rod driving mechanism comprises a push rod driving motor, and a power output end of the push rod driving motor is fixedly connected with a long section of the L-shaped taper plug rod.
3. The full-automatic funnel viscosity and rheological property measuring instrument according to claim 1 or 2, wherein the vertical movement driving mechanism comprises a through type screw rod stepping motor, a pair of sliding rails and a supporting frame, the left end of the supporting frame is fixedly connected with the lower rotary drum, the pair of sliding rails are respectively fixed on the front side and the rear side of the bearing bracket, a ball nut of the through type screw rod stepping motor is fixedly connected with the supporting frame, the upper end of the ball screw rod of the through type screw rod stepping motor is fixedly connected with the bearing bracket, and sliding blocks corresponding to the sliding rails are respectively arranged on the front side and the rear side of the supporting frame.
4. The full-automatic funnel viscosity and rheological property measuring instrument according to claim 1 or 2, wherein the rotation driving mechanism comprises a stepping motor and a transmission mechanism, the stepping motor is fixed on the supporting frame, and a power output end of the stepping motor is connected with a power input end of the transmission mechanism.
5. The full-automatic funnel viscosity and rheology meter according to claim 3, wherein the rotation driving mechanism comprises a stepping motor and a transmission mechanism, the stepping motor is fixed on the support frame, and a power output end of the stepping motor is connected with a power input end of the transmission mechanism.
6. The full-automatic funnel viscosity and rheological property measuring instrument according to claim 4 or 5, wherein the transmission mechanism comprises a driving belt wheel, a driven belt wheel and a transmission belt, the driving belt wheel is arranged on the power output end of the stepping motor, the driven belt wheel is fixed on the outer side of the lower rotary drum, and the driving belt wheel and the driven belt wheel are connected through the transmission belt; or/and, at least one flushing pipe is communicated with the top of the conical funnel, and the water outlet of the flushing pipe is tangential to the inner wall surface of the conical funnel; or/and the brush is fixedly arranged on the inner cylinder shaft above the inner cylinder through a bearing, and at least one outer cylinder flushing pipe capable of flushing the inner wall of the outer cylinder is circumferentially distributed on the outer side of the upper part of the brush.
7. The full-automatic funnel viscosity and rheology measuring instrument according to any one of claims 1 to 6, wherein the rheology measuring module comprises a strain gauge, and the deformation member is a spring steel sheet; an electric stirrer and a slurry tank liquid level electrode are arranged on the slurry tank, and a liquid outlet is arranged at the lower part of the slurry tank; the high liquid level monitoring module is a high-level electrode for monitoring high liquid level, and the low liquid level monitoring module is a low-level electrode for monitoring low liquid level.
8. The full-automatic funnel viscosity and rheology meter according to claim 7, wherein the single chip microcomputer is electrically connected with a control end of a through screw stepping motor, a control end of a stepping motor, a control end of an electric mixer, a push rod driving motor, a slurry tank liquid level electrode, a high level electrode and a low level electrode, respectively.
9. A method of testing a fully automatic funnel viscosity and rheology meter according to claim 8 comprising funnel viscosity measurement and rheology measurement; funnel viscosity measurements were made as follows:
filling slurry into a conical funnel through a grouting pipe, measuring the liquid level of the slurry in the conical funnel by using a high-level electrode and a low-level electrode, determining whether the slurry reaches an upper limit set value of the liquid level by using the high-level electrode, judging that the liquid level reaches the upper limit set value of the liquid level when the conductivity of the high-level electrode is changed severely, driving a conical plug rod by using a push rod to move rightwards, enabling the conical plug rod to drive a funnel conical plug to open, starting to flow out the slurry in the conical funnel after the funnel conical plug is opened, starting to time when the slurry in the conical funnel starts to flow out, and determining whether the required amount of slurry flows out of the conical funnel by judging the conductivity of the low-level electrode during the process; when the conductivity of the low-level electrode changes drastically, the liquid level is low enough to meet the condition of the required outflow, at the moment, stopping timing and recording the time, and calculating the funnel viscosity of the slurry according to the recorded time;
the rheology measurements were performed as follows: all the slurry in the conical hopper is leaked into the slurry tank, the rotary drum is driven by the through screw rod stepping motor to descend to the testing position in the slurry tank, the stepping motor drives the lower rotary drum to rotate at six different speeds, gaps between the lower rotary drum and the middle inner drum are filled with the slurry, the lower rotary drum can drive the slurry to rotate when rotating, the slurry can drive the inner drum to rotate and deviate due to the viscosity of the slurry, so that the spring steel sheet is bent and deformed, the resistance value of the strain gauge adhered to the spring steel sheet is changed and converted into a moment deflection value, and the rheological numerical value measurement is completed.
10. The method according to claim 9, wherein after the viscosity measurement and the rheological measurement are completed, the device is cleaned: the liquid outlet of the slurry tank is opened, after the tested slurry is discharged, the stepping motor drives the lower rotary drum to continuously rotate, the through screw rod stepping motor is started to drive the lower rotary drum to ascend, the inner drum and the brush are in a static state, meanwhile, an outer drum flushing pipe above the brush starts to spray water, the lower rotary drum ascends to a cleaning position, the lower rotary drum is opposite to the brush, the brush is rinsed by clean water, the brush cleans the inner wall of the lower rotary drum, and the remained slurry flows into the slurry tank;
meanwhile, clean water is injected into the conical funnel through the flushing pipe, the clean water starts to clean along the inner wall of the conical funnel, the conical plug of the funnel is in a normally open state, the inflow clean water directly flows into the mud tank, when the clean water in the mud tank reaches a certain liquid level, an electric stirrer on the mud tank starts to stir, and the stirred clean water can clean an inner barrel left in the mud tank; and discharging the cleaning waste liquid from a liquid outlet of the slurry tank, and ending the cleaning work after the cleaning waste liquid is emptied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235770.0A CN116008124A (en) | 2021-10-22 | 2021-10-22 | Full-automatic funnel viscosity and rheological property measuring instrument and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235770.0A CN116008124A (en) | 2021-10-22 | 2021-10-22 | Full-automatic funnel viscosity and rheological property measuring instrument and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116008124A true CN116008124A (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111235770.0A Pending CN116008124A (en) | 2021-10-22 | 2021-10-22 | Full-automatic funnel viscosity and rheological property measuring instrument and testing method |
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| Country | Link |
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| CN (1) | CN116008124A (en) |
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2021
- 2021-10-22 CN CN202111235770.0A patent/CN116008124A/en active Pending
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