CN109030346B - Device and method for measuring adhesion force of AM-AA gel and long-distance pipeline - Google Patents
Device and method for measuring adhesion force of AM-AA gel and long-distance pipeline Download PDFInfo
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- CN109030346B CN109030346B CN201810833779.3A CN201810833779A CN109030346B CN 109030346 B CN109030346 B CN 109030346B CN 201810833779 A CN201810833779 A CN 201810833779A CN 109030346 B CN109030346 B CN 109030346B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention relates to the technical field of force measurement, in particular to a device and a method for measuring the adhesion force of AM-AA gel and a long-distance pipeline. The method aims to solve the problem that ionic bonds generated by chemical reaction between colloid and a metal matrix are damaged during sampling in the existing method for testing the bonding strength between the colloid and the metal matrix. The technical scheme adopted by the invention comprises a tension and pressure test assembly and a force measuring cup assembly, wherein the force measuring cup assembly comprises a force measuring cup and a force measuring rod, the force measuring cup comprises a barrel-shaped cup body, an upper end cover with a hole in the middle and a lower end cover, and the upper end cover is detachably connected with the cup body; the lower end cover is detachably connected with the cup body, and connecting holes are uniformly distributed on the peripheral end surface of the lower end cover; a positioning groove is formed in the center of the inner side of the lower end cover, and the diameter of a middle hole of the upper end cover is larger than that of the force measuring rod; the force measuring cup is fixed on the lower part of the bracket, the upper end of the force measuring rod is connected with the tension meter, the lower part of the force measuring cup penetrates through the upper end cover, and the lower end of the force measuring rod is embedded in the positioning groove.
Description
Technical Field
The invention relates to the technical field of force measurement, in particular to a device and a method for measuring the adhesion force of AM-AA gel and a long-distance pipeline.
Background
With the continuous progress and development of material science, the acrylic Acid (AM) -acrylamide (AA) gel has the characteristics of high strength, high elasticity and the like, can generate chemical adsorption with metal and has a degradable function, can realize quick, safe, practical and economic pipeline plugging by applying the acrylic acid-acrylamide gel to the quick plugging and rush repair technology of the petroleum and natural gas pipeline, and has wide application prospect and research value. In order to enable the gel to bear the required pressure and meet the plugging requirement, the requirement that the gel has high strength and the polymer does not slide macroscopically in the pressure bearing process is met. On the premise that the gel body meets the shear strength, whether the gel can meet the pressure-bearing requirement depends on the adhesion between the gel and the pipeline. Therefore, the method for accurately measuring the adhesive force between the gel and the pipeline wall has very important significance for further application of the gel plugging technology.
In the test method for testing the bonding strength between the colloid and the metal matrix according to the current national standard in China, a single-layer lap joint test piece formed by thin metal sheets is widely applied. The device used for realizing the method is a combination of a tensile testing machine and a sample to be tested, wherein the sample adopts a mode of bonding a colloid to be tested between two metal sheets, and a tensile force is applied to the direction of a main shaft of the sample by the tensile testing machine to test the shear stress of a single lap joint bonding part of a rigid material. Therefore, a new method for measuring the adhesion force between the acrylic acid-acrylamide colloid and the long-distance pipeline needs to be invented to meet the use requirement.
Disclosure of Invention
The invention provides a device and a method for measuring the adhesion force of AM-AA gel and a long-distance pipeline, and aims to solve the problem that ionic bonds generated by chemical reaction between the gel and a metal matrix are damaged during sampling in the conventional test method for testing the bonding strength between the gel and the metal matrix.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: a device for measuring the adhesion force of AM-AA gel and a long-distance pipeline is characterized in that: comprises a tension and pressure test component and a force measuring cup component,
the force measuring cup assembly comprises a force measuring cup and a force measuring rod, wherein the force measuring cup consists of a barrel-shaped cup body, an upper end cover with a hole in the middle and a lower end cover, and the upper end cover is detachably connected with the cup body; the lower end cover is detachably connected with the cup body, and connecting holes are uniformly distributed on the peripheral end surface of the lower end cover; a positioning groove is formed in the center of the inner side of the lower end cover, and the diameter of a middle hole of the upper end cover is larger than that of the force measuring rod;
the force measuring cup is fixed on the lower part of the bracket, the upper end of the force measuring rod is connected with the tension meter, the lower part of the force measuring cup penetrates through the upper end cover, and the lower end of the force measuring rod is embedded in the positioning groove.
The lower part of the support is fixedly provided with a base, a force measuring cup is arranged on the base, a connecting hole in the lower end cover of the force measuring cup is a threaded hole, and the force measuring cup is connected with the base through the threaded hole.
The lower end cover is provided with a positioning ring, and the lower end of the cup body is arranged in the positioning ring.
A force measuring method of a device for measuring the adhesion force of AM-AA gel and a long-distance pipeline is characterized in that: the force measuring method comprises the following steps: the stepping motor rotates to drive the ball screw sliding table to act, the screw rod converts the rotation of the stepping motor into linear motion of the sliding table, and the tension meter fixed on the sliding table also vertically moves along with the motion of the sliding table;
filling the prepared glue solution into the force measuring cup, inserting the force measuring rod into the force measuring cup, and standing for completely reacting the glue solution; after the reaction is completed, connecting the force measuring rod with a tension meter;
under the control of a stepping motor, the tension meter moves upwards at a constant speed, the force measuring rod moves upwards along with the tension meter, and the data measured by the tension meter is the overall adhesion force of the force measuring rod; comparing the measured data with the surface area of the force measuring bar, calculating the obtained data to be an adhesion coefficient f, wherein the adhesion coefficient can be used as an evaluation index of the magnitude of the adhesion force, and a method for measuring the adhesion coefficient is used as an adhesion force characterization method;
in the formula FMeasuringFor the dynamometer measurement data, D is the dynamometer bar diameter and L is the gel injection height.
Compared with the prior art, the invention has the following advantages:
1. because the gel belongs to a high molecular polymer and has a certain polymerization reaction time, the force measuring cup assembly provided by the invention can provide an ideal place for gel polymerization reaction;
2. in the prior art, when sample preparation is carried out, glue to be detected is subjected toThe characteristics of the body are not changed, but in the sampling process of the acrylamide-acrylic acid system gel, the sampling of the prior art can destroy the ionic bonds between the gel and the metal wall, wherein the ionic bonds are generated by the slow chemical reaction between H ^ and Fe of the pipeline wall and the ionized H ^ ionized by the acrylic acid dissolved in water,
neutralization of acrylic acid with NaOH, CH2＝CH-COOH+NaOH＝CH2＝CH-COONa+H2And O. The ionic bond formation mechanism is the transfer and exchange of electrons between anions and cations, and the gel contains the product generated in chemical reaction
And CH2＝CH-COO-So that an ionic bond can be formed between the gel and the metal pipe, wherein
Can be associated with two CH2＝CH-COO-And (4) combining. The force measuring cup assembly provided by the invention solves the problem of measurement failure caused by the damage of ionic bonds.
Drawings
FIG. 1 is a schematic structural view of a force measuring device for measuring adhesion between an acrylic acid-acrylamide colloid and a long-distance pipeline;
FIG. 2 is a schematic view of the structure of an auxiliary force measuring device for measuring the adhesion force between an acrylic acid-acrylamide colloid and a long-distance pipeline;
fig. 3 is a sectional view taken along the line a-a of fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A device for measuring the adhesion force of AM-AA gel and a long-distance pipeline (see figures 2 and 3) comprises a tension and pressure test assembly and a force measuring cup assembly, wherein the force measuring cup assembly comprises a force measuring cup and a force measuring rod 204, the force measuring cup comprises a barrel-shaped cup body 202, an upper end cover 203 with a hole in the middle and a lower end cover 201, and the upper end cover 203 is detachably connected with the cup body 202; the lower end cover 201 is detachably connected with the cup body 202 by threads, and connecting holes 206 are uniformly distributed on the peripheral end surface of the lower end cover 201; a positioning groove 205 is formed in the center of the inner side of the lower end cover 201, and the diameter of a middle hole of the upper end cover 203 is larger than that of the force measuring rod 204;
the force measuring cup is fixed on the lower part of the bracket 106, the upper end of the force measuring rod 204 is connected with the tension meter 102, the lower part of the force measuring rod penetrates through the upper end cover 203, and the lower end of the force measuring rod is embedded in the positioning groove 205.
A positioning ring is integrally arranged on the lower end cover 201, and the lower end of the cup body 202 is arranged in the positioning ring.
The lower part of the bracket 106 is fixedly provided with a base 104, the base 10 is provided with a force measuring cup, a connecting hole 206 on the lower end cover 201 of the force measuring cup is a threaded hole, and the force measuring cup is connected with the base through the threaded hole.
When the force measuring method (see figure 1) for the device and the method for measuring the adhesion force of the AM-AA gel and the long-distance pipeline is used, a stepping motor 101 rotates, the stepping motor 101 drives a ball screw sliding table 103 to act, a screw rod converts the rotation of the stepping motor 101 into the linear motion of the sliding table, and a tension meter 102 fixed on the sliding table vertically moves along with the motion of the sliding table.
Filling the prepared glue solution into the force measuring cup 202, inserting the force measuring rod 204 into the force measuring cup, and standing for completely reacting the glue solution; after the reaction is complete, the force rod 204 is connected to the tension meter 102.
Under the control of the stepping motor 101, the tension meter 102 moves upwards at a constant speed, the force measuring rod 204 moves upwards along with the movement, and the data measured by the tension meter 102 is the overall adhesion force of the force measuring rod 204; comparing the measured data with the surface area of the force measuring rod 204, calculating the obtained data to be an adhesion coefficient f, wherein the adhesion coefficient can be used as an evaluation index of the magnitude of the adhesion force, and a method for measuring the adhesion coefficient is used as an adhesion force representation method;
in the formula FMeasuringFor the dynamometer measurement data, D is the dynamometer bar diameter and L is the gel injection height.
The invention effectively measures the adhesion force between the acrylic acid-acrylamide gel and the long-distance pipeline, effectively solves the problem that the ionic bond between the colloid and the metal matrix is damaged during sampling in the traditional test method for testing the bonding strength between the colloid and the metal matrix, and plays a role in promoting the application of the gel plugging technology to the rapid pipeline plugging technology.
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments. It is obvious to those skilled in the art that various modifications and variations can be made within the scope of the claims and the technical scope of the present invention.
Claims (1)
1. A force measuring method of a device for measuring the adhesion force of AM-AA gel and a long-distance pipeline is characterized in that:
the device comprises a tension-pressure test assembly and a force measuring cup assembly, wherein the force measuring cup assembly comprises a force measuring cup and a force measuring rod (204), the force measuring cup comprises a barrel-shaped cup body (202), an upper end cover (203) with a hole in the middle and a lower end cover (201), and the upper end cover (203) is detachably connected with the cup body (202); the lower end cover (201) is detachably connected with the cup body (202), and connecting holes (206) are uniformly distributed on the peripheral end surface of the lower end cover (201); a positioning groove (205) is formed in the center of the inner side of the lower end cover (201), and the diameter of a middle hole of the upper end cover (203) is larger than that of the force measuring rod (204);
the force measuring cup is fixed on the lower part of the bracket (106), the upper end of the force measuring rod (204) is connected with the tension meter (102), the lower part of the force measuring rod is penetrated through the upper end cover (203), and the lower end of the force measuring rod is embedded in the positioning groove (205);
the lower part of the bracket (106) is fixedly provided with a base (104), the base (104) is provided with a force measuring cup, a connecting hole (206) on a lower end cover (201) of the force measuring cup is a threaded hole, and the force measuring cup is connected with the base through the threaded hole;
a positioning ring is arranged on the lower end cover (201), and the lower end of the cup body (202) is arranged in the positioning ring;
the force measuring method comprises the following steps: the stepping motor (101) rotates to drive the ball screw sliding table (103) to act, the screw rod converts the rotation of the stepping motor (101) into the linear motion of the sliding table, and the tension meter (102) fixed on the sliding table vertically moves along with the motion of the sliding table;
filling the prepared glue solution into the force measuring cup, inserting the force measuring rod (204) into the force measuring cup, and standing for completely reacting the glue solution; after the reaction is completed, connecting the force measuring rod (204) with the tension meter (102);
under the control of the stepping motor (101), the tension meter (102) moves upwards at a constant speed, the force measuring rod (204) moves upwards along with the uniform speed, and data measured by the tension meter (102) is the magnitude of the overall adhesion force of the force measuring rod (204); comparing the measured data with the surface area of the force measuring rod (204), calculating the obtained data to be an adhesion coefficient f, wherein the adhesion coefficient can be used as an evaluation index of the magnitude of the adhesion force, and a method for measuring the adhesion coefficient is used as an adhesion force characterization method;
in the formula FMeasuringThe data measured for the tensile gauge, D is the force measuring bar diameter, and L is the gel injection height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810833779.3A CN109030346B (en) | 2018-07-26 | 2018-07-26 | Device and method for measuring adhesion force of AM-AA gel and long-distance pipeline |
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| CN201810833779.3A CN109030346B (en) | 2018-07-26 | 2018-07-26 | Device and method for measuring adhesion force of AM-AA gel and long-distance pipeline |
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| CN109030346B true CN109030346B (en) | 2021-12-07 |
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| CN102494994A (en) * | 2011-11-11 | 2012-06-13 | 中国科学院寒区旱区环境与工程研究所 | Instrument for measuring soil adherence force |
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2018
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02195228A (en) * | 1989-01-25 | 1990-08-01 | Japan Tobacco Inc | Adhesive-strength measuring apparatus |
| CN101226088A (en) * | 2007-11-13 | 2008-07-23 | 山东省建筑科学研究院 | Multifunctional digital display dynamometer |
| CN102419302A (en) * | 2010-09-27 | 2012-04-18 | 复旦大学 | Multi-functional emplastrum tester |
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| CN102539319A (en) * | 2011-12-27 | 2012-07-04 | 河海大学 | Device and method for directly testing bonding performance of concrete and reinforcing steel bar under action of reciprocating load |
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