Novel micro-gap extrusion cement paste penetration experiment device

Abstract

The utility model discloses a novel micro-gap extrusion cement slurry penetration experiment device which comprises an experiment table, a U-shaped support is welded to the top end of the experiment table, an organic glass flat plate is installed on the inner side of the U-shaped support, and filter paper is arranged below the organic glass flat plate. An organic glass plate with a groove is arranged below the filter paper, a first supporting pin and a second supporting pin are welded to the inner side of the U-shaped support, and the first supporting pin is sleeved with the two ends of the organic glass plate and the two ends of the filter paper. By arranging the extrusion mechanism, cement paste can be extruded in a driving mode, so that more labor is saved, meanwhile, the extrusion rate of the cement paste is conveniently and accurately controlled, the cement paste can be automatically sucked, and an experiment is conveniently carried out; the measuring scale is arranged below the organic glass plate with the groove, so that the permeation condition can be accurately known, the permeation condition is quantified, the experimental result is more accurate, and the experimental efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of squeezed cement slurry penetration experiments, in particular to a novel micro-gap squeezed cement slurry penetration experiment device. Background Art

[0002] The utility model patent with publication number CN204851218U discloses a micro-gap squeezed cement slurry penetration experimental device, including a plastic hose, a syringe, an organic glass plate, an injection point, filter paper, a micro-gap penetration channel, and an organic glass plate with grooves. The organic glass plate with grooves is placed horizontally on a test bench, filter paper is placed on the upper surface of the organic glass plate with grooves, the micro-gap penetration channel is placed on the filter paper, and the organic glass plate is placed on the upper part of the micro-gap penetration channel. The organic glass plate is fixed to the organic glass plate with grooves by a caliper, and an injection point is provided on the organic glass plate, and the injection point is connected to the syringe through a plastic hose.

[0003] The technical solution of the above patent has the following deficiencies:

[0004] The injector is manually operated, and the rate of the base cement slurry is difficult to control, and it is not easy to achieve the level of uniform slurry extrusion, which interferes with the test results;

[0005] Observing the penetration situation with the human eye is not a precise enough method, which leads to deviation in the accuracy of the test. Utility Model Content

[0006] In view of the problems existing in the existing novel micro-gap squeeze cement slurry penetration experimental device, the utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a new type of micro-gap squeezed cement slurry penetration test device, which solves the problem that the syringe is manually operated, the rate of the basic cement slurry is difficult to control, and it is not easy to achieve the degree of uniform extrusion of the slurry, thereby interfering with the test results; the penetration situation is observed by human eyes, and this manual observation method is not accurate enough, resulting in the problem of deviation in the accuracy of the test.

[0008] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] A novel micro-gap squeezed cement slurry penetration experimental device comprises an experimental table, a U-shaped bracket is welded on the top of the experimental table, an organic glass plate is installed inside the U-shaped bracket, filter paper is arranged below the organic glass plate; an organic glass plate with a groove is arranged below the filter paper.

[0010] Preferably, a first supporting pin and a second supporting pin are welded inside the U-shaped bracket, and both ends of the organic glass plate and the filter paper are sleeved on the first supporting pin;

[0011] The two ends of the organic glass plate are respectively sleeved on the second supporting pins.

[0012] Preferably, a weighing scale is provided below the organic glass plate, and the weighing scale is arranged on the experimental table.

[0013] Preferably, a cement slurry extrusion mechanism is installed on the U-shaped bracket;

[0014] The cement slurry extrusion mechanism includes an injection cylinder, the inner wall of the injection cylinder is slidably connected to a piston, the top end of the piston is detachably connected to a driving rod, the top end of the driving rod is detachably connected to a traction rod, and an electric push rod is detachably installed between the traction rod and the top end of the injection cylinder.

[0015] Preferably, a first supporting connection seat is fixedly mounted on the top of the piston, a driving rod is inserted into the inner wall of the first supporting connection seat, and the first supporting connection seat and the driving rod are fixed by bolts;

[0016] A second supporting connection seat is fixedly mounted on the bottom end of the traction rod, a driving rod is inserted into the inner wall of the second supporting connection seat, and the driving rod and the second supporting connection seat are fixed by bolts.

[0017] Preferably, third support and connection seats are fixedly installed on both sides of the bottom end of the traction rod, the inner wall of the third support and connection seat is plugged with the electric push rod, and the third support and connection seat and the electric push rod are fixed by bolts;

[0018] Fourth support and connection seats are fixedly installed on both sides of the top of the injection cylinder, and an electric push rod is inserted into the inner wall of the fourth support and connection seat. The fourth support and connection seat and the electric push rod are fixed by bolts.

[0019] Preferably, a discharge interface is provided at the bottom end of the injection barrel, and two outlets are provided on the discharge interface, one of the outlets is connected to the material barrel through a conduit, and the conduit extends into the inner cavity of the material barrel.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] By setting up the extrusion mechanism, the cement slurry can be extruded in a driving manner, which is not only more labor-saving, but also convenient for accurately controlling the extrusion rate of the cement slurry, and can automatically suck in the cement slurry, which is convenient for the experiment;

[0022] By setting a weighing scale under the organic glass plate with grooves, the penetration situation can be accurately known and quantified, so that the experimental results are more accurate and the experimental efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure provided by the utility model;

[0024] Figure 2 The utility model provides Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 A schematic diagram of a second supporting connection base provided by the utility model;

[0026] Figure 4 The utility model provides a schematic diagram of an organic glass plate, filter paper, and an organic glass plate with grooves.

[0027] In the figure: a laboratory bench 1, a U-shaped bracket 2, a material barrel 3, a conduit 4, a weighing scale 5, a plexiglass plate with grooves 6, a groove 61, a filter paper 7, a micro-gap permeation channel 71, a plexiglass plate 8, an injection point 81, a syringe 9, a piston 10, a first support connecting seat 11, a fourth support connecting seat 12, an electric push rod 13, a driving rod 14, a third support connecting seat 15, a second support connecting seat 16, a traction rod 17, a first support pin 18, and a second support pin 19. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] The utility model provides a new type of micro-gap squeeze cement slurry penetration experimental device, please refer to Figure 1-4 , including a test bench 1, a U-shaped bracket 2 is welded on the top of the test bench 1, a plexiglass plate 8 is installed on the inner side of the U-shaped bracket 2, an injection point 81 is arranged on the plexiglass plate 8, a filter paper 7 is arranged below the plexiglass plate 8, and a micro-gap penetration channel 71 is arranged on the filter paper 7; a plexiglass plate 6 with a groove is arranged below the filter paper 7, and a groove 61 is arranged on the plexiglass plate 6, so that the cement slurry passing through the filter paper 7 will enter the groove 61, and a weighing scale 5 is arranged below the plexiglass plate 6, and the weighing scale 5 is set on the test bench 1 so that the weighing scale 5 weighs the plexiglass plate 6, so that the penetration situation can be accurately understood, and if the readings of the weighing scale 5 are recorded multiple times within a period of time, the penetration situation during this period of time can be known.

[0030] A first supporting pin 18 and a second supporting pin 19 are welded to the inner side of the U-shaped bracket 2, and both ends of the organic glass plate 8 and the filter paper 7 are sleeved on the first supporting pin 18;

[0031] The two ends of the grooved organic glass plate 6 are respectively sleeved on the second supporting pin 19. A through hole is opened on the organic glass plate 6 for the second supporting pin 19 to pass through, and the diameter of the second supporting pin 19 is smaller than the hole diameter. The second supporting pin 19 does not bear the weight of the organic glass plate 6, thereby ensuring the accuracy of the reading of the measuring scale 5.

[0032] A cement slurry extrusion mechanism is installed on the U-shaped bracket 2; the cement slurry extrusion mechanism includes an injection cylinder 9, a discharge interface is provided at the bottom end of the injection cylinder 9, two outlets are provided on the discharge interface, valves are installed on the two outlets, one of the outlets is connected to the material barrel 3 through a conduit 4, the material barrel 3 is filled with configured cement slurry, the piston moves upward, so that the cement slurry in the material barrel 3 can be drawn into the injection cylinder 9 through the conduit 4, the conduit 4 extends into the inner cavity of the material barrel 3, the inner wall of the injection cylinder 9 is slidably connected to the piston 10, and the top end of the piston 10 is detachably connected to the drive rod 14, specifically, a first support connection seat 11 is fixedly installed on the top end of the piston 10, the drive rod 14 is inserted into the inner wall of the first support connection seat 11, the first support connection seat 11 and the drive rod 14 are fixed by bolts, and the top end of the drive rod 14 is detachably connected to the traction rod 17, specifically, a second support connection seat 16 is fixedly installed on the bottom end of the traction rod 17, the drive rod 14 is inserted into the inner wall of the second support connection seat 16, and the drive rod 14 is fixed to the second support connection seat 16 by bolts;

[0033] An electric push rod 13 is detachably installed between the traction rod 17 and the top of the injection cylinder 9. Specifically, third support and connecting seats 15 are fixedly installed on both sides of the bottom end of the traction rod 17, the electric push rod 13 is inserted into the inner wall of the third support and connecting seat 15, and the third support and connecting seat 15 and the electric push rod 13 are fixed by bolts; fourth support and connecting seats 12 are fixedly installed on both sides of the top of the injection cylinder 9, the electric push rod 13 is inserted into the inner wall of the fourth support and connecting seat 12, and the fourth support and connecting seat 12 and the electric push rod 13 are fixed by bolts; the contraction of the electric push rod 13 is used to drive the piston 10 to move up and down, thereby realizing the extrusion and extraction of cement slurry.

[0034] During actual use, the electric push rod 13 contracts and drives the piston 10 to descend, and the cement slurry is injected at the injection point 81 at a flow rate of 5 ml / min to observe the penetration of the cement slurry; and the penetrated cement slurry enters the groove 61, thereby causing the reading of the metering scale 5 to increase, so that the penetration situation can be specifically obtained.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel micro-gap squeezed cement slurry penetration test device, comprising a test bench (1), a U-shaped bracket (2) welded to the top of the test bench (1), characterized in that: An organic glass plate (8) is installed inside the U-shaped bracket (2), and filter paper (7) is provided below the organic glass plate (8); an organic glass plate (6) with a groove is provided below the filter paper (7); A weighing scale (5) is provided below the organic glass plate (6), and the weighing scale (5) is arranged on the experimental table (1); A cement slurry extrusion mechanism is installed on the U-shaped bracket (2); The cement slurry extrusion mechanism comprises an injection cylinder (9), the inner wall of the injection cylinder (9) is slidably connected to a piston (10), the top end of the piston (10) is detachably connected to a driving rod (14), the top end of the driving rod (14) is detachably connected to a traction rod (17), and an electric push rod (13) is detachably mounted between the traction rod (17) and the top end of the injection cylinder (9).

2. The novel micro-gap squeezed cement slurry penetration experimental device according to claim 1 is characterized in that: A first supporting pin (18) and a second supporting pin (19) are welded to the inner side of the U-shaped bracket (2), and both ends of the organic glass plate (8) and the filter paper (7) are sleeved on the first supporting pin (18); Both ends of the organic glass plate (6) are respectively sleeved on the second supporting pins (19).

3. The novel micro-gap squeeze cement slurry penetration experimental device according to claim 1 is characterized in that: A first supporting connection seat (11) is fixedly mounted on the top end of the piston (10); a driving rod (14) is inserted into the inner wall of the first supporting connection seat (11); and the first supporting connection seat (11) and the driving rod (14) are fixed by bolts; A second support connection seat (16) is fixedly mounted on the bottom end of the traction rod (17); a driving rod (14) is inserted into the inner wall of the second support connection seat (16); and the driving rod (14) and the second support connection seat (16) are fixed by bolts.

4. The novel micro-gap squeezed cement slurry penetration experimental device according to claim 1 or 3 is characterized in that: A third support connection seat (15) is fixedly mounted on both sides of the bottom end of the traction rod (17); the inner wall of the third support connection seat (15) is plugged into the electric push rod (13); and the third support connection seat (15) and the electric push rod (13) are fixed by bolts; A fourth support connection seat (12) is fixedly mounted on both sides of the top end of the injection cylinder (9), an electric push rod (13) is inserted into the inner wall of the fourth support connection seat (12), and the fourth support connection seat (12) and the electric push rod (13) are fixed by bolts.

5. The novel micro-gap squeeze cement slurry penetration experimental device according to claim 1 is characterized in that: The bottom end of the injection barrel (9) is provided with a discharge interface, and the discharge interface is provided with two outlets, one of the outlets is connected to the material barrel (3) via a conduit (4), and the conduit (4) extends into the inner cavity of the material barrel (3).

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