A method for detecting pipe burst position in tailings pipeline transportation system

Abstract

The present invention discloses a method for detecting a pipe burst position in a tailings pipe transportation system, comprising a diaphragm pump, wherein a tailings pipe is connected to a discharge port of the diaphragm pump, wherein the tailings pipe is formed by connecting multiple sections of pipes according to the terrain, and a pressure transmitter is provided on the diaphragm pump for displaying slurry pressure. The method comprises the following steps: S1, when the tailings pipe transportation system is operating normally, at least one sampling point is preset on each section of the pipe, the slurry pressure at the sampling point and the pipe length and terrain height difference relative to the discharge port of the diaphragm pump are confirmed, and a pressure query table is generated; S2, when a pipe burst occurs in the tailings pipe transportation system, the slurry pressure displayed by the pressure transmitter is the pressure at the pipe burst location, and a pipe burst point close to the pipe burst location is queried from the pressure query table according to the slurry pressure currently displayed by the pressure transmitter to determine the pipe length and terrain height difference at the pipe burst location, thereby facilitating maintenance personnel to quickly locate and repair the pipe, greatly shortening the repair cycle and reducing maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of mining pipeline detection, and in particular to a method for detecting a pipe burst position in a tailings pipeline transportation system. Background Art

[0002] Tailings pipeline systems are commonly used in mining to transport slurry. Due to the presence of solid particles in the slurry, the high-speed flow of the slurry in the tailings pipes, and friction with the pipe walls, these pipes are prone to bursts. If bursts are not detected and addressed promptly, they can easily lead to land pollution and other problems. Therefore, during production, maintenance personnel are required to conduct regular, routed inspections of the tailings pipelines, placing significant pressure on production. To address this, burst detection equipment is often added to tailings pipeline systems to replace maintenance personnel inspections and reduce production pressure.

[0003] However, existing tailings pipe burst detection equipment installs multiple pressure sensors in sections along the pipeline, transmitting the sensor's detection signals to a central control room. The central control room monitors the feedback data from each pressure sensor in real time and determines whether any abnormalities are present. Maintenance personnel are then notified of any abnormal feedback from pressure sensors for inspection and maintenance. However, since tailings pipes are typically deployed outdoors and consist of multiple sections connected to the terrain, operating and maintaining the pressure sensors on the pipelines is inconvenient. Furthermore, multiple pressure transmitters must be installed throughout the tailings pipes, significantly increasing costs.

[0004] Therefore, how to provide a detection method that facilitates maintenance personnel to quickly locate and repair pipelines and reduce maintenance costs is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a method for detecting pipe burst positions in tailings pipe transportation systems that facilitates maintenance personnel to quickly locate and repair pipelines and reduces maintenance costs.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A method for detecting pipe burst locations in a tailings pipe system includes a diaphragm pump, a tailings pipe connected to the diaphragm pump outlet, the tailings pipe being formed by multiple pipe sections butted together according to the terrain, and a pressure transmitter provided on the diaphragm pump near one end of the tailings pipe for displaying slurry pressure P. The method includes the following steps:

[0008] S1. Under normal operation of the tailings pipeline system, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point, the pipeline length relative to the diaphragm pump outlet, and the terrain height difference, and generate a pressure query table;

[0009] S2. When a pipe bursts in the tailings pipe system, the slurry pressure P displayed by the pressure transmitter is the pressure at the burst point. Based on the slurry pressure P currently displayed by the pressure transmitter, the pressure query table is used to query the nearest burst point to determine the burst location.

[0010] Furthermore, in step S1, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point and the pipeline length relative to the diaphragm pump outlet and the terrain height difference, specifically including:

[0011] Preset at least one sampling point on each section of the pipeline, and obtain the pipeline length L and terrain height difference H between the sampling point and the diaphragm pump outlet;

[0012] Obtain the slurry density ρ and pipeline resistance loss ΔP value, through the formula Calculate the slurry pressure P at the sampling point.

[0013] Furthermore, the pipeline resistance loss ΔP value is obtained, specifically including:

[0014] Under normal operation of the tailings pipeline system, according to the actual slurry pressure P at the tailings pipe outlet, the pipeline length L and the terrain height difference H, the slurry pressure is calculated by the formula Obtained by reverse deduction.

[0015] Furthermore, the pipeline length L and the terrain height difference H are respectively measured by one or more of an optical level, a total station, and an optical theodolite.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention presets at least one sampling point on each section of the tailings pipe, confirms the slurry pressure P at the sampling point, the pipe length relative to the diaphragm pump outlet, and the terrain height difference, and generates a pressure query table. When a pipe bursts at a certain point in the pipe, the pressure value currently displayed by the pressure transmitter installed at the diaphragm pump outlet is the slurry pressure at the burst point. The pressure query table then searches for the burst point close to it to determine the pipe length L and the terrain height difference H at the burst location, thereby facilitating maintenance personnel to quickly locate and repair the pipe, greatly shortening the repair cycle.

[0018] 2. The present invention only uses the pressure transmitter provided at the diaphragm pump outlet to monitor the slurry pressure in real time, thus avoiding the installation of multiple pressure transmitters on the tailings pipe and greatly reducing costs.

[0019] 3. It avoids the operation and maintenance work of multiple pressure transmitters themselves, and at the same time avoids problems such as false alarms and non-alarms caused by faults.

[0020] 4. The burst pipe location is detected by slurry pressure. The detection principle is simple and reliable, and there is no interference with the detection signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solutions and advantages of the invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

[0022] Figure 1 Schematic diagram of pressure detection of the first embodiment of the tailings pipeline transportation system of the present invention;

[0023] Figure 2 for Figure 1 Diagram of the dismantling of the pipe burst point in the tailings pipe;

[0024] Figure 3 Schematic diagram of pressure detection of the tailings pipeline transportation system according to the second embodiment of the present invention;

[0025] Figure 4 for Figure 3 Diagram of the dismantling point of the tailings pipe burst.

[0026] In the figure: 1. Diaphragm pump; 2. Tailings pipe; 3. Pressure transmitter; 4. Tailings pond; 5. Electric motor. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the tailings pipe transportation system of the present invention includes a diaphragm pump 1, a tailings pipe 2 is connected to the outlet of the diaphragm pump, the tailings pipe is formed by multiple sections of pipes connected according to the terrain, and a tailings pond 4 is provided at the outlet of the tailings pipe for settling the slurry; a pressure transmitter 3 is provided on the diaphragm pump near one end of the tailings pipe for displaying the slurry pressure P, and the diaphragm pump is provided with a driving force through an electric motor 5.

[0029] This embodiment provides a method for detecting a pipe burst position in a tailings pipe transportation system, comprising the following steps:

[0030] S1. Under normal operation of the tailings pipeline system, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point, the pipeline length relative to the diaphragm pump outlet, and the terrain height difference, and generate a pressure query table;

[0031] S2. When a pipe bursts in the tailings pipe system, the slurry pressure P displayed by the pressure transmitter is the pressure at the burst point. Based on the slurry pressure P currently displayed by the pressure transmitter, the pressure query table is used to query the nearest burst point to determine the burst location.

[0032] In this embodiment, the normal situation refers to the situation where the slurry flows normally in the tailings pipe and the tailings pipe does not burst (the actual slurry pressure P at the tailings pipe outlet does not change significantly).

[0033] The present invention presets at least one sampling point on each section of the tailings pipe, confirms the slurry pressure P at the sampling point, the pipe length relative to the diaphragm pump outlet, and the terrain elevation difference, and generates a pressure query table. When a pipe bursts at a certain point in the pipe, due to the presence of solid particles in the slurry, the burst opening will expand in a short period of time, causing most of the slurry to flow out of the burst opening. At this time, the pressure value currently displayed by the pressure transmitter installed at the diaphragm pump outlet is the slurry pressure at the burst point. The pressure query table is then searched for a burst point close to the burst point to determine the pipe length L and terrain elevation difference H at the burst position, thereby facilitating maintenance personnel to quickly locate and repair the pipe, greatly shortening the repair cycle. At the same time, the slurry pressure is monitored in real time using the pressure transmitter provided at the diaphragm pump outlet, avoiding the need to install multiple pressure transmitters on the tailings pipe and greatly reducing costs.

[0034] In the specific implementation, in step S1, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point and the pipeline length relative to the diaphragm pump outlet and the terrain height difference, specifically including:

[0035] Preset at least one sampling point on each section of the pipeline, and obtain the pipeline length L and terrain height difference H between the sampling point and the diaphragm pump outlet;

[0036] Obtain the slurry density ρ and pipeline resistance loss ΔP value, through the formula Calculate the slurry pressure P at the sampling point.

[0037] The pressure at the diaphragm pump outlet is only related to the slurry pressure formed at the pipeline outlet, and the slurry pressure P is related to the pipeline length L, the natural height difference H and the pipeline resistance loss ΔP. ​​When the physical and chemical parameters of the transported slurry and the layout of the pipeline are constant, the slurry density ρ and the pipeline resistance loss ΔP are constant values. In this way, when a pipe bursts, the pipeline length L and the terrain height difference H corresponding to the pipe burst can be determined based on the slurry pressure P currently displayed by the pressure transmitter to determine the location of the pipe burst.

[0038] In this embodiment, obtaining the pipeline resistance loss ΔP value specifically includes:

[0039] Under normal operation of the tailings pipeline system, according to the actual slurry pressure P at the tailings pipe outlet, the pipeline length L and the terrain height difference H, the slurry pressure is calculated by the formula Obtained by reverse deduction.

[0040] The pipeline resistance loss value can be derived from preliminary experiments on slurry composition, but these values ​​can differ from actual operation. To minimize this discrepancy and ensure accuracy when calculating the slurry pressure P at the sampling point, the present invention uses the existing data on pipeline length, terrain elevation, slurry density, and actual outlet slurry pressure to reversely calculate the actual pipeline resistance loss value using a slurry pressure calculation formula. The slurry pressure P at the sampling point is then calculated to improve data accuracy.

[0041] Furthermore, the pipeline length L and the terrain height difference H are measured by one or more of an optical level, a total station, and an optical theodolite, respectively, which facilitates operation and ensures accurate data measurement.

[0042] To facilitate understanding, the present invention is further described below with reference to two embodiments.

[0043] Example 1:

[0044] See also Figure 1 and Figure 2 The present invention saves multiple pressure transmitters on the basis of the existing tailings pipe system burst detection equipment, reduces costs, and also facilitates maintenance personnel to quickly locate and repair the pipeline. Specifically, it includes a diaphragm pump 1, and a tailings pipe 2 is connected to the outlet of the diaphragm pump. The tailings pipe is formed by connecting multiple sections of pipes according to the pure uphill terrain (i.e. Figure 1 The tailings pipe outlet is equipped with a tailings pond 4 for settling slurry. A pressure transmitter 3 is installed on the diaphragm pump 1 near one end of the tailings pipe to display the slurry pressure P. The diaphragm pump is driven by an electric motor 5. During the specific test, at least one sampling point is preset on each section of the tailings pipe. For example, a sampling point is preset on the AB section of the pipe. The pipe length L and the terrain height difference H relative to the diaphragm pump outlet are obtained. The slurry density ρ and the pipe resistance loss ΔP are obtained. The formula Calculate the slurry pressure P at the sampling point; when the burst point 1 is in the AB section of the pipeline, the burst mouth will expand in a short period of time due to the presence of solid particles in the slurry, causing most of the slurry to flow out of the burst mouth. At this time, the pressure value currently displayed by the pressure transmitter installed at the outlet of the diaphragm pump is the slurry pressure at the burst point; then query the pressure query table for the burst point 1 close to it to determine the pipe length L1 and the terrain height difference H1 at the burst position, so that maintenance personnel can quickly locate and repair the pipeline, greatly shortening the repair cycle. In this embodiment, the tailings pipe is formed by connecting multiple sections of pipes based on a pure uphill terrain. As the terrain height difference H and the pipe length L increase, the slurry pressure P at each sampling point corresponds to a unique pipe length L and terrain height difference H, which can quickly locate the burst mouth.

[0045] Example 2:

[0046] See also Figure 3 and Figure 4 The second embodiment is based on the first embodiment, only the tailings pipe laying terrain is different, the tailings pipe is formed by multiple sections of pipes connected according to the uphill and downhill terrain (i.e. Figure 3 When confirming the slurry pressure at the preset sampling points on each section of the pipeline (from point O to point F), there may be isobaric points. For example, in the pipeline section CD, as the terrain height difference H decreases from point C to point D and the pipeline length L increases, the slurry pressure P value corresponds to multiple terrain height differences H and pipeline lengths L, which can also help to quickly locate the burst port.

[0047] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described with reference to its preferred embodiments, those skilled in the art will appreciate that various modifications may be made thereto in form and detail. Any obvious modifications derived from the technical solutions of the present invention remain within the scope of protection of the present invention.

Claims

1. A method for detecting pipe bursts in a tailings pipe system, comprising a diaphragm pump, a tailings pipe connected to the discharge port of the diaphragm pump, the tailings pipe being formed by connecting multiple pipe sections according to the terrain, and a pressure transmitter provided on the diaphragm pump near one end of the tailings pipe for displaying the slurry pressure P, characterized in that: The method for detecting the burst pipe position comprises the following steps: S1. Under normal operation of the tailings pipeline system, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point, the pipeline length relative to the diaphragm pump outlet, and the terrain height difference, and generate a pressure query table; S2. When a pipe bursts in the tailings pipe system, the slurry pressure P displayed by the pressure transmitter is the pressure at the burst point. Based on the slurry pressure P currently displayed by the pressure transmitter, the pressure query table is used to find the nearest burst point to determine the burst location. In step S1, at least one sampling point is preset on each section of the pipeline to confirm the slurry pressure P at the sampling point and the pipeline length relative to the diaphragm pump outlet and the terrain height difference, specifically including: Preset at least one sampling point on each section of the pipeline, and obtain the pipeline length L and terrain height difference H between the sampling point and the diaphragm pump outlet; Obtain the slurry density ρ and pipeline resistance loss △P value, through the formula Calculate the slurry pressure P at the sampling point.

2. The method for detecting pipe burst position in a tailings pipeline system according to claim 1, characterized in that: Obtain the pipeline resistance loss △P value, including: Under normal operation of the tailings pipeline system, according to the actual slurry pressure P at the tailings pipe outlet, the pipeline length L and the terrain height difference H, the slurry pressure is calculated by the formula Obtained by reverse deduction.

3. The method for detecting pipe burst position in a tailings pipeline system according to claim 2, characterized in that: The pipeline length L and the terrain height difference H are measured by one or more of an optical level, a total station, and an optical theodolite.

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