A test pipe section and device for testing and optimizing filling slurry operation parameters

Abstract

The present invention relates to a test pipe section and device for testing and optimizing the operating parameters of filling slurry, wherein a test block is installed in the test pipe section, and the test pipe section is arranged in series in the test pipeline. The beneficial effects of the present invention are: 1. The system structure of the present invention is simple, the components are easy to process, the installation and connection are convenient, and the connection method is variable. 2. By adjusting the strength of the test block, the operating parameters of the filling slurry can be tested in a relatively short time and compared and optimized. 3. The test pipe section can be installed in different parts of the annular test pipeline, and the actual slurry movement state can be tested to obtain reliable operating parameters, which effectively guides the design of mine filling projects.

Description

Technical Field

[0001] The invention relates to a filling slurry operation parameter testing device, which is used for testing the performance parameters of the filling slurry, including mass concentration, flow velocity, particle level, pipeline pressure and sedimentation characteristics, and is a testing device for optimizing parameters by comparing test data. Background Art

[0002] In the design process of mine filling system, the impact of the parameters of filling slurry during operation on the pipeline is one of the factors that must be considered. Choosing appropriate operating parameters can effectively reduce the accident rate of filling pipelines and extend the service life of pipelines.

[0003] The existing testing devices for filling slurry parameters are basically single-factor small-scale test devices, and the test process cannot be truly consistent with the movement state of the slurry in the pipeline, especially the pressure of the slurry in the pipeline cannot be taken into account as an influencing factor. This causes the obtained data to be distorted and cannot be applied to the design of mine filling systems.

[0004] Although there are theoretical formulas and empirical formulas derived from other mines as aids in mine filling project design, the scope of application of these formulas is narrow and the calculation errors between them are large, so their engineering application value is not high. When conducting specific mine filling project design, targeted experimental research is still the best choice to determine the operating parameters of the filling slurry. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a test pipe section and a device for testing and optimizing the operating parameters of filling slurry.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a test pipe section for testing and optimizing the operating parameters of filling slurry, comprising a test tube and a test block, wherein the inner side wall of the test tube is fixedly connected to a test block installation chamber, and the test block is detachably installed in the test block installation chamber, and one end of the test block installation chamber has a test block inlet, and the test tube has a feed port and a discharge port, and the test block installation chamber is also fixedly connected to outlet baffles on both sides of one end facing the discharge port.

[0007] The beneficial effects of the present invention are as follows: the test tube of the present invention can test the situation where the filling slurry causes the test block to lose mass. The structure of the test block installation chamber is simple, the test block is easy to install, easy to manufacture, and the experimental cost is low. The test block inlet is not only used to load or remove the test block, but also facilitates the test block and the slurry in the test tube to fully contact, and the experimental effect is good. The area between the two outlet baffles is used to collect the settled particles generated after the filling slurry passes through the test block. After sampling, a laser particle size analyzer is used to perform particle size analysis. The more coarse particles there are, the more likely it is that the filling slurry under this parameter will be easily deposited inside the pipeline.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Further, the other end of the test block installation chamber has an opening.

[0010] The beneficial effect of adopting the above further solution is that the opening helps the test block and the slurry in the test tube to fully contact each other.

[0011] Further, the test block installation chamber includes two side baffles, two end baffles and an inner baffle, the side baffles and the end baffles are arranged at intervals and connected end to end in sequence, the side baffles and the end baffles are both fixedly connected to the inner side walls of the test tube, the two ends of the inner baffle are respectively fixedly connected to the two side baffles, the length of the inner baffle is smaller than the length of the side baffle, the test block entrance is formed between one end of the inner baffle and the end baffle, the opening is formed between the other end of the inner baffle and the other end baffle, and the two outlet baffles are respectively arranged coplanar with the two side baffles and fixedly connected.

[0012] The beneficial effects of adopting the above further solution are: the test block installation chamber has a simple structure, is easy to manufacture, has a low cost, and the test block can be quickly disassembled and assembled.

[0013] Furthermore, the end baffle is in the shape of an arc plate, and the inner baffle and the side baffle are both in the shape of a rectangular plate.

[0014] The beneficial effect of adopting the above further solution is that the end baffle is in the shape of an arc plate, so that both ends of the test block can also contact the slurry, the test block can fully contact the slurry, and the experimental effect is more obvious.

[0015] Furthermore, the test block is in the shape of a block with a fan-shaped ring cross section, a side wall of the test block facing the inner wall of the test tube is an arc surface, and a side wall of the test block away from the inner wall of the test tube is a plane.

[0016] The beneficial effects of adopting the above further solution are: the test block has a simple structure, is easy to install in the test block installation room, and is easy to manufacture and shape.

[0017] The present invention also relates to a device for testing and optimizing the operating parameters of the filling slurry, including the test pipe section for testing and optimizing the operating parameters of the filling slurry.

[0018] Furthermore, it also includes an annular test pipeline, the test pipe section is arranged in series in the test pipeline, pressure gauges are respectively arranged on the test pipelines at both ends of the test pipe section, and an electromagnetic flowmeter is arranged on the test pipeline.

[0019] The beneficial effect of adopting the above further solution is that the pressure gauge records the pressure loss when the filling slurry flows through the test pipeline.

[0020] Furthermore, the test pipeline is provided with a filling slurry preparation device and a pump, and the test pipeline is provided with a discharge port and a gate valve in sequence along the pumping direction.

[0021] The beneficial effect of adopting the above further solution is that after the experiment, the gate valve can be closed to stop the flow of the slurry, and the slurry in the pipeline can be discharged through the discharge port.

[0022] Furthermore, the filling slurry preparation device is a stirring barrel, and the stirring barrel is fixedly connected to a stirrer for stirring the material in the stirring barrel.

[0023] The beneficial effect of adopting the above further scheme is that the stirring barrel is used to store and prepare the slurry, and the slurry is stirred to ensure that the slurry is uniform.

[0024] Furthermore, the test pipeline has a vertical pipe section arranged vertically, and the inner diameter of the test pipeline is the same as that of the test pipe.

[0025] The beneficial effect of adopting the above further solution is that the filling pipeline usually has a vertical pipeline, and a vertical pipe section is provided in the test pipeline to better simulate the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the test pipe section of the present invention;

[0027] Figure 2 It is a right side view of the test pipe section of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the test block of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the device for testing and optimizing the operating parameters of the filling slurry according to the present invention.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Inner baffle, 2. End baffle, 3. Side baffle, 4. Test tube, 5. Test block inlet, 6. Test block, 7. Pump, 8. Discharge port, 9. Gate valve, 10. Mixing barrel, 11. Mixer, 12 Vertical pipe section, 13. Pressure gauge, 14. Outlet baffle, 15. Electromagnetic flowmeter. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1-3 As shown, the present invention relates to a test pipe section for testing and optimizing the operating parameters of filling slurry, including a test tube 4 and a test block 6, wherein the inner wall of the test tube 4 is fixedly connected with a test block installation chamber, and the test block 6 is detachably installed in the test block installation chamber, and one end of the test block installation chamber is provided with a test block inlet 5, and the test tube 4 has a feed port and a discharge port, and the test block installation chamber is also fixedly connected with outlet baffles 14 on both sides of one end facing the discharge port.

[0034] Specifically, Figure 1 As shown, the outlet baffle 14 is in the shape of a triangular plate, and its two right-angled sides are respectively fixedly connected to the inner wall of the test tube 4 and the two sides of the test block installation chamber, and the outlet baffle 14 is parallel to the slurry flow direction.

[0035] As a further solution of this embodiment, the other end of the test block installation chamber has an opening.

[0036] As a further scheme of this embodiment, the test block installation chamber includes two side baffles 3, two end baffles 2 and an inner baffle 1, the side baffles 3 and the end baffles 2 are arranged at intervals and connected end to end in sequence, the side baffles 3 and the end baffles 2 are fixedly connected to the inner wall of the test tube 4, the two ends of the inner baffle 1 are respectively fixedly connected to the two side baffles 3, the length of the inner baffle 1 is less than the length of the side baffle 3, the test block entrance 5 is formed between one end of the inner baffle 1 and the end baffle 2, the opening is formed between the other end of the inner baffle 1 and the other end baffle 2, and the two outlet baffles 14 are respectively arranged coplanar with the two side baffles 3 and fixedly connected.

[0037] As a further solution of this embodiment, the end baffle 2 is in the shape of an arc plate, and the inner baffle 1 and the side baffle 3 are both in the shape of a rectangular plate.

[0038] Specifically, the height of the end baffle 2 is smaller than the height of the side baffle 3 , so that both ends of the test block 6 can contact with the slurry.

[0039] As a further solution of this embodiment, Figure 3 As shown, the test block 6 is a block with a fan-shaped ring cross section, one side wall of the test block 6 facing the inner side wall of the test tube 4 is an arc surface, and one side wall of the test block 6 away from the inner side wall of the test tube 4 is a plane.

[0040] Specifically, Figure 2 In the direction shown, the bottom surface of the test block 6 is an arc surface, the top surface of the test block 6 is a plane, and the left and right side surfaces are inclined surfaces. In this way, there is a gap between the two side walls of the test block 6 and the two side walls of the test block installation chamber, making it easier to place the test block 6 into the test block installation chamber.

[0041] Specifically, Figure 1 As shown, the inner baffle 1 is arranged close to the end baffle 2 on one side. Figure 1 In the figure, the inner baffle 1 is arranged close to the end baffle 2 on the left side and its two ends are respectively fixedly connected to the two side baffles 3. The test block entrance is formed between the inner baffle 1 and the end baffle 2 on the right side. When the test block 6 is put in, the test block 6 is tilted toward the lower left, and its left end first enters the test block installation chamber from the test block entrance 5, and then the test block 6 is pushed to the left and the tilt angle is gradually reduced until the test block 6 is completely installed in the test block installation chamber.

[0042] The present invention also relates to a device for testing and optimizing the operating parameters of a filling slurry, such as Figure 4 As shown, it includes the test pipe section for testing and optimizing the operating parameters of the filling slurry. Specifically, the test pipe section is arranged horizontally. Figure 4 It only indicates the connection relationship between the components, but not the placement direction of the test pipe section.

[0043] As a further solution of this embodiment, it also includes an annular test pipeline, the test pipe section is arranged in series in the test pipeline, pressure gauges 13 are respectively arranged on the test pipelines at both ends of the test pipe section, and an electromagnetic flowmeter 15 is arranged on the test pipeline.

[0044] As a further solution of this embodiment, the test pipeline is provided with a filling slurry preparation device and a pump 7, and the test pipeline is provided with a discharge port 8 and a gate valve 9 in sequence along the pumping direction.

[0045] Specifically, the filling slurry preparation device, the pump 7, the discharge port 8 and the gate valve 9 are connected by pipelines to form a circulation loop.

[0046] As a further solution of this embodiment, the filling slurry preparation device is a stirring barrel 10 , and the stirring barrel 10 is fixedly connected to a stirrer 11 for stirring the material in the stirring barrel 10 .

[0047] As a further solution of this embodiment, the test pipeline has a vertical pipe section 12 arranged vertically, and the inner diameter of the test pipeline is the same as that of the test pipe 4.

[0048] Specifically, in order to ensure the accuracy of the test result, the test pipe section is installed as far away from the vertical pipe section 12 as possible.

[0049] The present invention also relates to a test method for testing and optimizing the operating parameters of the filling slurry in the pipeline, which can effectively simulate the real movement state of the filling slurry, test various operating parameters of the filling slurry in a short time and optimize them. By fixing a self-made test block inside the test pipe section, and connecting the test pipe section with the annular test pipeline, by changing the operating parameters of the filling slurry, recording the parameter data of the filling slurry within a certain period of time, the mass loss of the slurry to the test block 6 under different operating parameters is obtained, and five parameters of mass concentration, particle grading, flow velocity, pipeline pressure and sedimentation characteristics are analyzed.

[0050] like Figure 4 As shown, a test method for testing the influencing factors of filling slurry on pipeline wear adopts the device for testing and optimizing the operating parameters of filling slurry.

[0051] The two ends of the test pipe section can be connected to the parts that need to be tested in the annular test pipeline through welding flanges. Pressure gauges 13 are installed near the two ends of the test pipe section to record and analyze the pressure loss when the filling slurry flows through the test pipe section. The greater the pressure loss, the greater the running resistance of the filling slurry in the pipeline under this parameter. An electromagnetic flowmeter 15 is also installed on the test pipeline.

[0052] The test block installation chamber is provided with an outlet baffle at one end facing the discharge port, which is used to collect the settled particles generated after the filling slurry passes through the test block 6. After sampling, the particle size analysis is performed using a laser particle size analyzer. The higher the content of coarse particles, the more likely the filling slurry under this parameter is to accumulate inside the pipeline.

[0053] The diameter of the test pipe section is consistent with the size of the annular test pipe.

[0054] The two ends of the test pipe section can be connected to the test in an annular manner by welding different joints, and the installation position of the test pipe section in the test pipeline can be changed according to the test requirements.

[0055] The test block 6 is made by a mold and installed in the test pipeline. The mass loss before and after the test is compared and recorded. In the process of making the test block 6, the influence of errors on the strength of the test block 6 needs to be avoided as much as possible. The test method is as follows:

[0056] 1. The test block is generally composed of cementitious materials, coarse aggregate and fine aggregate. In this embodiment, the test block is specifically made of cement, fly ash and fine sand. The test block can also be made of other cementitious materials, coarse aggregate and fine aggregate. According to the particle size distribution law, hardness and specific test time required of the tailings sample, cement, fly ash and fine sand are used as raw materials, and the cement content is adjusted to make test blocks with different proportions to test the law of their strength development with age.

[0057] 2. According to the above-mentioned cement addition amount, test blocks are made in batches. Since the strength growth of cement gradually becomes slow with the increase of age, the curing time of the test blocks should be taken in the range where the strength growth is slow.

[0058] 3. In order to obtain more accurate test results and reduce the impact of errors, the test blocks need to be numbered during the production process. According to the specific test time of the test, the production time between each two adjacent numbered test blocks is separated by a certain time span. This time span is equal to the specific test time. This can ensure that each test block has experienced the same development age during the test and reduce the impact of the test block development age on the strength. Taking the test time of a test block of 8 hours as an example, in order to reduce the impact of strength changes caused by cement hydration, the production time interval of each test block can be 8 hours to ensure that each test block has experienced the same development age during the test. After production is completed, it needs to enter the cement curing box for curing under standard conditions.

[0059] 3. Before testing, take the test block out of the curing room and put it into an oven to dry at high temperature. After ensuring that the test block has completely lost moisture, weigh it and record the data, and then install the test block in the test pipeline.

[0060] 4. Carry out the test. After the test, remove the test block, wash it, put it into the oven for high-temperature drying, weigh it, and record the data.

[0061] The test block needs to be thoroughly dried before and after the test to reduce the mass error caused by moisture in the test block. The mass change before and after the test block is analyzed in combination with the recorded flow rate, pressure data, and the proportion concentration and particle size distribution of the filling slurry. The greater the mass loss of the test block, the greater the impact of the filling slurry on the pipeline under this parameter, and the shorter the service life of the filled pipeline.

[0062] The beneficial effects of the present invention are:

[0063] 1. The system of the present invention has a simple structure, convenient component processing, convenient installation and connection, and variable connection methods.

[0064] 2. By adjusting the strength of the test block, the operating parameters of the filling slurry can be tested in a shorter time and compared and optimized.

[0065] 3. The test pipe section can be installed at different parts of the annular test pipeline to test the actual slurry movement state, obtain reliable operating parameters, and effectively guide the design of mine filling projects.

[0066] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test pipe section for testing and optimizing the operating parameters of a filling slurry, characterized in that: The invention comprises a test tube (4) and a test block (6), wherein the inner side wall of the test tube (4) is fixedly connected to a test block installation chamber, the test block (6) is detachably installed in the test block installation chamber, one end of the test block installation chamber is provided with a test block inlet (5), the test tube (4) has a feed inlet and a discharge outlet, and both sides of the test block installation chamber facing the discharge outlet are respectively fixedly connected to outlet baffles (14); The other end of the test block installation chamber has an opening; The test block installation chamber comprises two side baffles (3), two end baffles (2) and an inner baffle (1); the side baffles (3) and the end baffles (2) are arranged at intervals and connected end to end in sequence; the side baffles (3) and the end baffles (2) are both fixedly connected to the inner side wall of the test tube (4); the two ends of the inner baffle (1) are respectively fixedly connected to the two side baffles (3); the length of the inner baffle (1) is shorter than the length of the side baffles (3); the test block entrance (5) is formed between one end of the inner baffle (1) and one of the end baffles (2); the opening is formed between the other end of the inner baffle (1) and the other end baffle (2); and the two outlet baffles (14) are respectively arranged coplanarly with the two side baffles (3) and fixedly connected; The outlet baffle (14) is in the shape of a triangular plate, and its two right-angled sides are respectively fixedly connected to the inner wall of the test tube (4) and the two sides of the test block installation chamber, and the outlet baffle (14) is parallel to the slurry flow direction; The end baffle (2) is in the shape of an arc-shaped plate, and the inner baffle (1) and the side baffle (3) are both in the shape of a rectangular plate; The height of the end baffle (2) is smaller than the height of the side baffle (3); The test block (6) is in the shape of a block with a fan-shaped ring cross section, a side wall of the test block (6) facing the inner side wall of the test tube (4) is an arc surface, and a side wall of the test block (6) away from the inner side wall of the test tube (4) is a plane; The test block (6) is composed of cementitious material, coarse aggregate and fine aggregate.

2. A device for testing and optimizing the operating parameters of a filling slurry, characterized in that: It includes the test pipe section for testing and optimizing the operating parameters of the filling slurry as described in claim 1.

3. A device for testing and optimizing filling slurry operating parameters according to claim 2, characterized in that: It also comprises an annular test pipeline, wherein the test pipe section is arranged in series in the test pipeline, pressure gauges (13) are respectively arranged on the test pipelines at both ends of the test pipe section, and an electromagnetic flowmeter (15) is arranged on the test pipeline.

4. A device for testing and optimizing filling slurry operating parameters according to claim 3, characterized in that: The test pipeline is provided with a filling slurry preparation device and a pump (7), and the test pipeline is provided with a discharge port (8) and a gate valve (9) in sequence along the pumping direction.

5. A device for testing and optimizing filling slurry operating parameters according to claim 4, characterized in that: The filling slurry preparation device is a stirring barrel (10), and the stirring barrel (10) is fixedly connected to a stirrer (11) for stirring the material in the stirring barrel (10).

6. A device for testing and optimizing filling slurry operating parameters according to claim 3, characterized in that: The test pipeline has a vertical pipe section (12) arranged vertically, and the inner diameter of the test pipeline is the same as that of the test pipe (4).

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