A device and method for measuring spatial displacement matrix in a non-continuous medium

Abstract

The present invention belongs to the technical field of flow characteristic measurement, and provides a device and method for measuring spatial displacement matrix in a discontinuous medium, including: a model box, which defines a cavity for accommodating a working medium, and an opening is provided on one side of the model box. When the working medium is displaced, the working medium moves from the cavity along the direction of the opening; a transfer block is arranged in the cavity, and has a fixed end and a movable end relative to the model box, respectively, and when the working medium moves along the direction of the opening, the movable end can rotate relative to the fixed end; a first measuring instrument is used to obtain an angle signal generated when the transfer block rotates; a second measuring instrument is used to obtain an acceleration signal generated when the transfer block rotates; wherein, a plurality of transfer blocks are provided, and the plurality of transfer blocks are evenly distributed in an array on the cross-sectional end of the cavity. The present invention can effectively measure the spatial displacement of a discontinuous medium, and improve the effect of the measurement test.

Description

Technical Field

[0001] The invention belongs to the technical field of flow characteristic measurement, and in particular relates to a device and method for measuring spatial displacement matrix in a discontinuous medium. Background Art

[0002] The liquefaction characteristics of soil are a hot topic in soil dynamics. With the continuous action of dynamic loads such as earthquakes and explosions, the pressure in the soil continues to increase, causing the original "soil skeleton" to lose its force, which in turn causes the soil to produce fluid motion characteristics. Analyzing soil flow from the perspective of fluid mechanics can not only explore the mechanical response mechanism of liquefied soil to a limited extent, but also help to conduct engineering research on rock and soil blasting, earthquakes, etc. Therefore, a spatial displacement measurement device in a discontinuous medium is urgently needed to meet the above-mentioned demand for measuring the flow motion characteristics of soil. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for measuring spatial displacement matrix in a discontinuous medium to solve the above-mentioned problems, which can effectively measure the spatial displacement of the discontinuous medium and improve the effect of the measurement test.

[0004] To achieve the above object, the present invention provides the following solution: a device for measuring spatial displacement matrix in a discontinuous medium, comprising:

[0005] The model box has a cavity defined inside for accommodating the working medium, and one side of the model box is provided with an opening. When the working medium is displaced, the working medium moves from the cavity along the direction of the opening;

[0006] A transfer block is arranged in the cavity and has a fixed end and a movable end relative to the model box, and when the working medium moves along the opening direction, the movable end can rotate relative to the fixed end;

[0007] A first measuring instrument, used for acquiring an angle signal generated when the transfer block rotates;

[0008] A second measuring instrument is used to obtain an acceleration signal generated when the transfer block rotates;

[0009] There are a plurality of transfer blocks, which are evenly distributed in an array on the cut surface end of the cavity.

[0010] Preferably, it also includes:

[0011] A signal storage device is arranged on the transmission block and is used for storing the angle signal and the acceleration signal.

[0012] Preferably, the diameter of the transfer block gradually decreases from the bottom end to the top end, and when the working medium moves along the opening direction, the bottom end of the transfer block rotates around the top end thereof.

[0013] Preferably, it also includes:

[0014] Limiting ropes, the number of which is the same as and corresponds to the transfer blocks, and the limiting ropes are arranged in the cavity and fixed relative to the model box;

[0015] Wherein, the top end of the transfer block is rotatably fixed on the limiting rope, and the bottom end of the transfer block has a tendency to move downward in the vertical direction.

[0016] Preferably, the transfer block is a conical structure, the tip of the transfer block extends in the vertical direction and is provided with a through hole, the limiting rope is passed through the through hole, and when the transfer block rotates, the transfer block can rotate in a direction perpendicular to the axis of the limiting rope.

[0017] Preferably, positioning holes are respectively provided on opposite sides of the inner wall of the model cavity away from the opening, and the two positioning holes are located on the same axis, and the two ends of the limiting rope respectively pass through the two positioning holes and are fixed to the model box.

[0018] Preferably, a receiving cavity is provided in the transfer block, and the receiving cavity is used to receive the first measuring instrument, the second measuring instrument and the signal storage instrument.

[0019] Preferably, it also includes:

[0020] A partition is fixed in the middle of the accommodating chamber and is used to separate the accommodating chamber into a first cavity and a second cavity. The first measuring instrument, the second measuring instrument and the signal storage instrument are all located in the first cavity and fixed to the partition. A counterweight block is fixed to the inner wall of the bottom end of the second cavity.

[0021] A method for measuring a spatial displacement matrix in a discontinuous medium, according to any one of the above-mentioned devices for measuring a spatial displacement matrix in a discontinuous medium, comprises the following steps:

[0022] The opening is sealed and the working fluid is filled into the cavity until the cavity is full;

[0023] Open the opening so that the working fluid flows from the cavity to the opening;

[0024] During the flow of the working fluid, the working fluid contacts the transfer block, driving the transfer block to rotate around the limit rope.

[0025] Acquiring, by means of a first measuring instrument, an angle signal generated when the transfer block rotates;

[0026] Acquiring an acceleration signal generated when the transfer block rotates by means of a second measuring instrument;

[0027] A signal storage device is used to store the angle signal and acceleration signal acquired during the flow of the working fluid;

[0028] When the working fluid stops flowing, the information stored in the signal storage device is collected and the fluid movement characteristics are studied.

[0029] Preferably, when collecting the information stored in the signal storage device, the angle signal and the acceleration signal obtained when the working fluid is filled into the cavity are screened out.

[0030] Compared with the prior art, the present invention has the following advantages and technical effects:

[0031] The present invention provides a cavity in the model box so as to accommodate the working fluid in the cavity, and opens an opening on one side of the model box, and utilizes the fluidity of the working fluid to move along the direction of the opening to simulate soil flow, and during the flow of the working fluid, the transfer block arranged in the cavity can form a motion state in which the movable end rotates relative to the fixed end, so that the transfer block feeds back the flow characteristics of the working fluid; and the angle change generated when the transfer block rotates is measured by the first measuring instrument to obtain the angle signal, and the acceleration change generated when the transfer block rotates is measured by the second measuring instrument to obtain the acceleration signal, thereby realizing the response to the displacement data of the working fluid flow in the cavity and meeting the experimental measurement of the spatial displacement in the non-continuous medium. In addition, since a plurality of transfer blocks are arranged in the cavity, and the plurality of transfer blocks are evenly distributed in an array on the cross-sectional end of the cavity, the angle signal and acceleration signal data of each transfer block are obtained in combination with the first measuring instrument and the second measuring instrument, so that the accuracy of the measurement result of the overall measuring device is improved, and the improvement of the measurement test effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0033] Figure 1 It is a structural schematic diagram of the overall device;

[0034] Figure 2 is the array distribution diagram of the transfer block;

[0035] Figure 3 It is a structural cross-sectional view of the transfer block;

[0036] Figure 4 It is a position relationship diagram when multiple transfer blocks are arranged on the limit rope;

[0037] Among them, 1. model box; 2. transfer block; 3. first measuring instrument; 4. second measuring instrument; 5. signal storage instrument; 6. limit rope; 7. positioning hole; 8. partition; 9. counterweight block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example: Refer to Figure 1-Figure 4 , a spatial displacement matrix measuring device in a discontinuous medium, comprising,

[0041] The model box 1 defines a cavity for accommodating the working medium. An opening is provided on one side of the model box 1. When the working medium is displaced, the working medium moves from the cavity along the direction of the opening.

[0042] The transfer block 2 is arranged in the cavity and has a fixed end and a movable end relative to the model box 1. When the working medium moves along the opening direction, the movable end can rotate relative to the fixed end.

[0043] A first measuring instrument 3 is used to obtain an angle signal generated when the transfer block 2 rotates;

[0044] The second measuring instrument 4 is used to obtain the acceleration signal generated when the transfer block 2 rotates;

[0045] There are a plurality of transmission blocks 2, which are evenly distributed in an array on the cut surface end of the cavity.

[0046] The present invention provides a cavity in the model box 1, so as to use the cavity to accommodate the working fluid, and opens an opening on one side of the model box 1, and uses the fluidity of the working fluid to move along the direction of the opening to simulate the flow of soil, and during the flow of the working fluid, the transfer block 2 arranged in the cavity can form a motion state in which the movable end rotates relative to the fixed end, so that the transfer block 2 feeds back the flow characteristics of the working fluid, and the angle change generated when the transfer block 2 rotates is measured by the first measuring instrument 3 to obtain the angle signal, and the acceleration change generated when the transfer block 2 rotates is measured by the second measuring instrument 4 to obtain the acceleration signal, so as to realize the response to the displacement data of the working fluid flow in the cavity and meet the experimental measurement of the spatial displacement in the non-continuous medium. In addition, since a plurality of transfer blocks 2 are arranged in the cavity, and the plurality of transfer blocks 2 are evenly distributed in an array on the cross-sectional end of the cavity, the angle signal and acceleration signal data of each transfer block 2 are obtained in combination with the first measuring instrument 3 and the second measuring instrument 4, so that the accuracy of the measurement result of the overall measuring device is improved, and the measurement test effect is improved.

[0047] Furthermore, it also includes:

[0048] The signal storage device 5 is arranged on the transmission block 2 and is used for storing angle signals and acceleration signals.

[0049] In the present technical solution, a signal storage device 5 is also provided on the transmission block 2, and the angle signal and the acceleration signal are stored in the signal storage device 5, thereby reducing the interference to the flow of the working fluid caused by the need to record and obtain the signal at all times during the flow of the working fluid. At the same time, it also effectively avoids the situation where the signal transmission of the first measuring instrument 3 and the second measuring instrument 4 is affected due to the working fluid blocking them, which ultimately leads to a reduction in the authenticity of the measurement results, thereby making the test results of the overall measuring device accurate and efficient.

[0050] Specifically, the first measuring instrument 3 can adopt common ones, such as capacitive encoders, magnetoresistive angle sensors, etc., and the second measuring instrument 4 can adopt common ones, such as piezoelectric acceleration sensors, capacitive acceleration sensors, etc. By equipping the signal storage device 5 with a signal transceiver, a communication connection with the first measuring instrument 3 and the second measuring instrument 4 is formed, thereby realizing the storage and collection of the acquired signals.

[0051] Furthermore, the diameter of the transfer block 2 gradually decreases from the bottom end to the top end, and when the working medium moves along the opening direction, the bottom end of the transfer block 2 rotates around the top end thereof.

[0052] By utilizing the structural characteristics of the transfer block 2 itself, when the working fluid passes through the transfer block 2, the resistance generated by the working fluid acting on the bottom end of the transfer block 2 is greater than the resistance generated by the working fluid acting on the top end of the transfer block 2, thereby achieving the goal of driving the bottom end of the transfer block 2 to rotate around the top end through the working fluid. Correspondingly, the top end of the transfer block 2 is the fixed end relative to the model box 1, and the bottom end is the movable end relative to the model box 1.

[0053] Furthermore, it also includes:

[0054] The limiting ropes 6 are the same in number and correspond one to one with the transmission blocks 2, and the limiting ropes 6 are erected in the cavity and fixed relative to the model box 1;

[0055] The top end of the transmission block 2 is rotatably fixed on the limiting rope 6, and the bottom end of the transmission block 2 has a tendency to move downward in the vertical direction.

[0056] By setting up a limit rope 6 in the cavity, and the limit rope 6 corresponds to the number of transfer blocks 2 one by one, the top of the transfer block 2 is rotatably fixed on the limit rope 6. In the present technical solution, combined with the continuous increase in the diameter of the bottom end of the transfer block 2, the deadweight of the structure increases accordingly, so that under the action of gravity, the transfer block 2 maintains a downward movement trend in the vertical direction, so that before the working fluid flows, the several transfer blocks 2 buried in the working fluid can maintain the same direction, so that after the transfer blocks 2 are driven to rotate during the flow of the working fluid, the angle signal and acceleration signal of the transfer blocks 2 are measured respectively at this time, which can guarantee the accuracy of the measurement results to a limited extent, so that the several transfer blocks 2 are located in the initial position before the test.

[0057] Furthermore, the transmission block 2 is a conical structure, the tip of the transmission block 2 extends in the vertical direction and is provided with a through hole, and the limiting rope 6 is passed through the through hole. When the transmission block 2 rotates, the transmission block 2 can rotate in a direction perpendicular to the axis of the limiting rope 6.

[0058] In the present technical solution, the transfer block 2 is set as a conical structure, and the tip of the transfer block 2 is rotatably connected to the limiting rope 6, while the bottom end of the transfer block 2 is vertically downward due to the action of gravity, and the diameter of the structure gradually decreases from bottom to top. The through hole and the limiting rope 6 cooperate to limit the transfer block 2, so that under the push of the working fluid, the transfer block 2 rotates along the axis of the vertical limiting rope 6 and toward the opening, thereby realizing a mechanical simulation response to the soil flow.

[0059] Furthermore, it can be understood that clips (not shown in the figure) can be fixed on both sides of the transfer block 2 on the limiting rope 6, and the clips can be used to limit the transfer block 2 so that the transfer block 2 can be rotatably fixed relative to the limiting rope 6.

[0060] In one embodiment of the present technical solution, the transfer block 2 can change the distance between the transfer block 2 and the inner wall of the adjacent cavity by adjusting the clamping position of the clamp, thereby increasing the data information measured at different positions in the cavity and improving the research value.

[0061] In another embodiment of the present technical solution, the transfer block 2 is arranged on the limiting rope 6 and is located in the middle of the cavity, so that the distance between the transfer block 2 and the inner walls of the cavity on both sides is the same. When the working fluid in the cavity flows, it can move toward the opening in the direction of central symmetry relative to the transfer block 2, and the forces on both sides of the transfer block 2 produce a balancing effect on each other, thereby ensuring the accuracy of the feedback of the transfer block 2 on the working fluid thrust and improving the measurement effect.

[0062] In another embodiment of the present technical solution, referring to Figure 4 , a plurality of transfer blocks 2 may be passed through the limit rope 6, and the plurality of transfer blocks 2 on the same limit rope 6 are symmetrically and evenly spaced along the center of the cavity, so that when the working fluid flows, the plurality of transfer blocks 2 on the same limit rope 6 can simultaneously measure the fluid properties at different positions in the cavity, and by comparing the signals obtained from the plurality of transfer blocks 2 on the same limit rope 6, spatial displacement measurements of the working fluid flow properties caused by the different distances between the transfer blocks 2 and the inner wall of the cavity can be performed, thereby forming a plurality of signal measurement points distributed in an array in the overall inner space, further enhancing the effect of the spatial displacement measurement test.

[0063] Furthermore, positioning holes 7 are respectively provided on opposite sides of the inner wall of the model cavity away from the opening, and the two positioning holes 7 are located on the same axis. Both ends of the limiting rope 6 respectively pass through the two positioning holes 7 and are fixed to the model box 1 .

[0064] The limiting rope 6 can be a common steel wire rope. Specifically, the limiting rope 6 can be installed in the cavity and fixed to the positioning hole 7 by welding, tightening bolts, etc.

[0065] Furthermore, a receiving cavity is provided in the transmission block 2 , and the receiving cavity is used to receive the first measuring instrument 3 , the second measuring instrument 4 and the signal storage instrument 5 .

[0066] Furthermore, it also includes:

[0067] The partition 8 is fixed in the middle of the accommodating chamber to separate the accommodating chamber into a first cavity and a second cavity. The first measuring instrument 3, the second measuring instrument 4 and the signal storage instrument 5 are all located in the first cavity and fixed to the partition 8. A counterweight 9 is fixed to the inner wall of the bottom end of the second cavity.

[0068] By fixing the partition 8 in the accommodating chamber and dividing the accommodating chamber into a first cavity and a second cavity, the first measuring instrument 3, the second measuring instrument 4 and the signal storage instrument 5 are covered by the transfer block 2, thereby preventing the working fluid in the cavity from damaging the equipment, and correspondingly, the signal storage instrument 5 in the accommodating chamber can also avoid interference caused by the working fluid in acquiring signals from the first measuring instrument 3 and the second measuring instrument 4, thereby ensuring the validity of the acquired signal data and improving the measurement effect.

[0069] A method for measuring a spatial displacement matrix in a non-continuous medium, according to any of the above-mentioned devices for measuring a spatial displacement matrix in a non-continuous medium, comprises the following steps:

[0070] The opening is sealed and the working fluid is filled into the cavity until the cavity is full;

[0071] Open the opening so that the working fluid flows from the cavity to the opening;

[0072] During the flow of the working medium, the working medium contacts the transfer block 2, driving the transfer block 2 to generate a rotation angle around the limit rope 6;

[0073] Acquire the angle signal generated when the transfer block 2 rotates by the first measuring instrument 3;

[0074] The acceleration signal generated when the transfer block 2 rotates is obtained by the second measuring instrument 4;

[0075] The signal storage device 5 is used to store the angle signal and the acceleration signal acquired during the working fluid flow process;

[0076] When the working fluid stops flowing, the information stored in the signal storage device 5 is collected and the fluid motion characteristics are studied.

[0077] Furthermore, when collecting the information stored in the signal storage device 5, the angle signal and the acceleration signal obtained when the working medium is filled into the cavity are screened out.

[0078] In the technical scheme, the opening is blocked during the process of filling the working fluid into the cavity. When measuring, the opening is opened, and the working fluid can contact the transfer block 2 when flowing along the opening direction, thereby driving the transfer block 2 to rotate around the limiting rope 6. During the process, the first measuring instrument 3 and the second measuring instrument 4 fixedly connected to the partition 8 can measure the angle signal and acceleration signal generated when the transfer block 2 rotates, and the signal storage device 5 is used to continuously collect and record the acquired signals when the flow of the working fluid does not stop. After the flow of the working fluid stops, data is collected for several transfer blocks 2 arranged in the cavity. By collecting the data information recorded in the signal storage device 5 and filtering out the signals recorded when filling the working fluid, the accuracy of the internal spatial displacement measurement is guaranteed, the spatial displacement of the working fluid is efficiently measured, and the effect of improving the measurement test of the overall device is achieved.

[0079] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0080] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A spatial displacement matrix measuring device in a discontinuous medium, characterized in that: include, The model box (1) defines a cavity for accommodating a working medium inside, and an opening is provided on one side of the model box (1). When displacement of the working medium occurs, the working medium moves from the cavity in the direction of the opening; A transfer block (2) is arranged in the cavity and has a fixed end and a movable end relative to the model box (1), and when the working medium moves along the opening direction, the movable end can rotate relative to the fixed end; A first measuring instrument (3) is used to obtain an angle signal generated when the transfer block (2) rotates; A second measuring instrument (4) is used to obtain an acceleration signal generated when the transfer block (2) rotates; There are a plurality of the transmission blocks (2), and the plurality of the transmission blocks (2) are evenly distributed in an array on the cut surface end of the cavity; Also includes: Limiting ropes (6), the number of which is the same as and corresponds to the transfer blocks (2), and the limiting ropes (6) are installed in the cavity and fixed relative to the model box (1); The top end of the transfer block (2) is rotatably fixed on the limiting rope (6), and the bottom end of the transfer block (2) has a tendency to move downward in a vertical direction.

2. The device for measuring spatial displacement matrix in a discontinuous medium according to claim 1, characterized in that: Also includes: A signal storage device (5) is arranged on the transmission block (2) and is used to store the angle signal and the acceleration signal.

3. The device for measuring spatial displacement matrix in a non-continuous medium according to claim 1, characterized in that: The diameter of the transfer block (2) gradually decreases from the bottom end to the top end, and when the working medium moves along the opening direction, the bottom end of the transfer block (2) rotates around the top end thereof.

4. The device for measuring spatial displacement matrix in a non-continuous medium according to claim 1, characterized in that: The transmission block (2) is a conical structure, the tip of the transmission block (2) extends in the vertical direction and is provided with a through hole, the limiting rope (6) is passed through the through hole, and when the transmission block (2) rotates, the transmission block (2) can rotate in a direction perpendicular to the axis of the limiting rope (6).

5. The device for measuring spatial displacement matrix in a non-continuous medium according to claim 1, characterized in that: Positioning holes (7) are respectively provided on opposite sides of the inner wall of the model cavity away from the opening, and the two positioning holes (7) are located on the same axis. The two ends of the limiting rope (6) respectively pass through the two positioning holes (7) and are fixed to the model box (1).

6. The device for measuring spatial displacement matrix in a non-continuous medium according to claim 2, characterized in that: The transmission block (2) is provided with a receiving cavity, and the receiving cavity is used to receive the first measuring instrument (3), the second measuring instrument (4) and the signal storage instrument (5).

7. The device for measuring spatial displacement matrix in a non-continuous medium according to claim 6, characterized in that: Also includes: A partition (8) is fixedly connected in the middle of the accommodating cavity and is used to separate the accommodating cavity into a first cavity and a second cavity. The first measuring instrument (3), the second measuring instrument (4) and the signal storage instrument (5) are all located in the first cavity and are fixedly connected to the partition (8); a counterweight block (9) is fixedly connected to the inner wall of the bottom end of the second cavity.

8. A method for measuring a spatial displacement matrix in a non-continuous medium, according to the device for measuring a spatial displacement matrix in a non-continuous medium according to any one of claims 1 to 4, characterized in that: The following steps are involved: The opening is sealed and the working fluid is filled into the cavity until the cavity is full; Open the opening so that the working fluid flows from the cavity to the opening; During the flow of the working fluid, the working fluid is in contact with the transfer block (2), thereby driving the transfer block (2) to generate a rotation angle around the limiting rope (6); Acquiring an angle signal generated when the transfer block (2) rotates by means of a first measuring instrument (3); Acquiring an acceleration signal generated when the transfer block (2) rotates by means of a second measuring instrument (4); A signal storage device (5) is used to store the angle signal and the acceleration signal acquired during the flow of the working fluid; When the working fluid stops flowing, the information stored in the signal storage device (5) is collected and the fluid motion characteristics are studied.

9. The method for measuring spatial displacement matrix in a non-continuous medium according to claim 8, characterized in that: When collecting the information stored in the signal storage device (5), the angle signal and the acceleration signal obtained when the working medium is filled into the cavity are screened out.

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