Solution to deformation of coal mine drainage pipeline due to siphon effect

Abstract

The application discloses a kind of coal mine drainage pipeline deformation solutions due to siphon effect, it is related to coal mine drainage technical field, this coal mine drainage pipeline deformation solutions due to siphon effect, the application aims at when siphon effect appears in drainage system, internal pipe can communicate with external environment, realize the consistency of pressure in and outside pipe, avoid the problem of being pressed flat due to the fact that the pressure in pipe is lower than the pressure outside pipe occurs, further improve the safety factor of drainage system;Using reinforced pipeline structure, installing bending compensation device, designing exhaust device, increasing support and fixing point, optimizing pipeline layout and regular maintenance and detection and other methods, it can effectively solve the problem of coal mine drainage pipeline deformation due to siphon effect, improve the drainage efficiency and safety of coal mine, the device structure is simple, design is ingenious, can be good to solve the problem of pipe deformation caused by siphon effect of drainage system, improve the safe operation quality of drainage system, it is worth promoting application.

Description

Technical Field

[0001] This invention relates to the field of coal mine drainage technology, specifically a solution to the deformation of coal mine drainage pipelines due to the siphon effect. Background Technology

[0002] The siphon effect refers to the phenomenon where liquid rises spontaneously in a pipe due to a pressure difference. It is a natural phenomenon, primarily based on the difference between the negative pressure inside the pipe and atmospheric pressure. Specifically, when one section of a pipe is drained or partially drained, a negative pressure is created within the pipe. When the water level at the other end of the pipe is sufficiently high, atmospheric pressure causes the liquid to rise until equilibrium is restored or it reaches a higher height. Currently, the siphon effect is severely impacting the normal operation of drainage pipelines in coal mines.

[0003] Currently, φ315mm PE pipes are commonly used for drainage in mines. Due to the elevation difference in the roadways, after drainage at higher drainage points is completed, the φ315mm PE pipes are frequently flattened due to the siphon effect of the drainage system. Over time, this leads to problems such as pipe breaks and pipe joint detachment, which seriously affects the safe operation of the mine drainage system.

[0004] Therefore, the present invention provides a solution to the deformation of coal mine drainage pipelines due to the siphon effect to solve the above-mentioned problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a solution to the deformation of coal mine drainage pipes due to the siphon effect. This solution addresses the problem that PE drainage pipes in mines, affected by the elevation difference in roadways, frequently become flattened due to the siphon effect after drainage at high-level drainage points, easily leading to pipe breaks and weld detachment, which seriously affects the safe operation of the mine drainage system.

[0006] To achieve the above objectives, the present invention provides a solution to the deformation of coal mine drainage pipes due to the siphon effect, specifically including the following steps:

[0007] Step 1: Analyze the pipeline system: First, conduct a comprehensive analysis and evaluation of the coal mine drainage pipeline;

[0008] Step 2: Select appropriate materials: Based on the characteristics of the piping system and the operating environment, select materials with matching properties to enhance the strength and pressure resistance of the pipeline;

[0009] Step 3: Design bending compensation devices: Design and install bending compensation devices at pipe bends and locations with elevation differences to reduce stress concentration caused by pipe deformation and prevent further deformation.

[0010] Step 4: Design an exhaust system: When the drainage system experiences a siphon effect, the inside of the drainage pipe can communicate with the external environment to ensure that the pressure inside and outside the pipe is consistent, thus avoiding the problem of the pipe being flattened due to the pressure inside the pipe being lower than the pressure outside the pipe.

[0011] Step 5: Add supports and fixing points: Based on the actual situation of the pipeline system, add supports and fixing points at bends, height changes, and width changes to distribute stress and reduce the risk of deformation and rupture caused by pipeline deformation.

[0012] Step Six: Optimize Pipeline Layout: When designing drainage pipelines, optimize the pipeline layout, avoid or reduce bends and changes in elevation to reduce the siphon effect and the risk of pipeline deformation.

[0013] Step 7: Regular maintenance and inspection: Conduct regular maintenance and inspection of the coal mine drainage pipelines.

[0014] Furthermore, in step one, the analysis and evaluation of the project includes understanding the structural characteristics of the piping system, drainage conditions, and existing problems.

[0015] Furthermore, in step two, the material with matching properties is either fiberglass or polyethylene.

[0016] Furthermore, in step seven, the maintenance and inspection items for coal mine drainage pipelines include cleaning the pipelines and checking the stability of supports and fixing devices, in order to promptly detect and repair pipeline deformation and damage problems.

[0017] Furthermore, in step four, the venting device includes a three-way pipe, a butterfly valve, and a check valve. The three-way pipe is fixedly connected to the drainage pipe, and the butterfly valve and check valve are respectively fixedly connected to the two drainage pipes of the three-way pipe. When the pipe is sucked flat, the butterfly valve of the device is opened, and the air outside the pipe enters the drainage pipe through the one-way check valve. When the pressure inside and outside the drainage pipe is the same, the check valve automatically closes to prevent the water from flowing out of the drainage pipe. At the same time, when the check valve malfunctions, the butterfly valve is operated to close or vent the drainage pipe.

[0018] Furthermore, the check valve includes a valve cover, a rocker arm, a valve body, and a valve disc.

[0019] Furthermore, the check valve is a butterfly check valve.

[0020] Furthermore, the butterfly valve is a butterfly gate valve.

[0021] Beneficial effects

[0022] This invention provides a solution to the deformation of coal mine drainage pipes due to the siphon effect. Compared with the prior art, it has the following advantages:

[0023] 1. A solution to the deformation of coal mine drainage pipelines due to the siphon effect, comprising the following steps: Step 1, analyzing the pipeline system; Step 2, selecting appropriate materials; Step 3, designing a bending compensation device; Step 4, designing an exhaust device; Step 5, adding supports and fixing points; Step 6, optimizing the pipeline layout; and Step 7, regular maintenance and inspection. This solution addresses the problem that, due to the elevation difference in the mine roadway, PE drainage pipes frequently become flattened due to the siphon effect after drainage at higher drainage points, easily leading to pipe breaks and weld detachment, seriously affecting the safe operation of the mine drainage system.

[0024] 2. A solution to the deformation of coal mine drainage pipelines due to the siphon effect. This invention allows for timely detection and repair of pipeline problems through regular maintenance and inspection, ensuring drainage efficiency and safety. The aim is to ensure that when a siphon effect occurs in the drainage system, the pipeline interior can communicate with the external environment, achieving consistent pressure inside and outside the pipe and preventing the pipeline from being flattened due to lower internal pressure than external pressure. Secondly, when the pipeline is flattened, opening the butterfly valve allows external air to enter the pipe through a one-way check valve. When the internal and external pressures are equal, the check valve automatically closes, preventing water outflow. Furthermore, in case of check valve failure, the butterfly valve can be operated to seal or vent the pipeline, further improving the safety factor of the drainage system. Moreover, by strengthening the pipeline structure, installing bending compensation devices, designing venting devices, increasing support and fixing points, optimizing pipeline layout, and conducting regular maintenance and inspection, the problem of deformation of coal mine drainage pipelines due to the siphon effect can be effectively solved, improving the drainage efficiency and safety of coal mines.

[0025] 3. A solution to the deformation of coal mine drainage pipelines due to the siphon effect. This invention solves the problem of pipeline deformation caused by the siphon effect in the drainage system, and improves the safe operation quality of the drainage system. The device has a simple structure and ingenious design, and can effectively solve the problem of pipeline deformation caused by the siphon effect in the drainage system, thereby improving the safe operation quality of the drainage system. It is worthy of widespread application. Attached Figure Description

[0026] Figure 1 This is a flowchart of the method of the present invention;

[0027] Figure 2 This is a schematic diagram of the exhaust device structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the check valve structure of the present invention.

[0029] In the diagram: 1. Three-way pipe; 2. Butterfly valve; 3. Check valve; 31. Valve cover; 32. Rocker arm; 33. Valve disc; 34. Valve body. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1-3 This invention provides two technical solutions: a method for solving the deformation of coal mine drainage pipes due to the siphon effect, specifically including the following embodiments:

[0032] Example 1: A solution to the deformation of coal mine drainage pipes due to the siphon effect, specifically including the following steps:

[0033] Step 1: Analyze the pipeline system: First, conduct a comprehensive analysis and evaluation of the coal mine drainage pipeline;

[0034] Step 2: Select appropriate materials: Based on the characteristics of the piping system and the operating environment, select materials with matching properties to enhance the strength and pressure resistance of the pipeline;

[0035] Step 3: Design bending compensation devices: Design and install bending compensation devices at pipe bends and locations with elevation differences to reduce stress concentration caused by pipe deformation and prevent further deformation.

[0036] Step 4: Design an exhaust system: When the drainage system experiences a siphon effect, the inside of the drainage pipe can communicate with the external environment to ensure that the pressure inside and outside the pipe is consistent, thus avoiding the problem of the pipe being flattened due to the pressure inside the pipe being lower than the pressure outside the pipe.

[0037] Step 5: Add supports and fixing points: Based on the actual situation of the pipeline system, add supports and fixing points at bends, height changes, and width changes to distribute stress and reduce the risk of deformation and rupture caused by pipeline deformation.

[0038] Step Six: Optimize Pipeline Layout: When designing drainage pipelines, optimize the pipeline layout, avoid or reduce bends and changes in elevation to reduce the siphon effect and the risk of pipeline deformation.

[0039] Step 7: Regular maintenance and inspection: Conduct regular maintenance and inspection of the coal mine drainage pipelines.

[0040] The process involves seven steps: Step 1, analyzing the pipeline system; Step 2, selecting appropriate materials; Step 3, designing a bend compensation device; Step 4, designing an exhaust device; Step 5, adding supports and fixing points; Step 6, optimizing the pipeline layout; and Step 7, regular maintenance and inspection. This addresses the problem of PE drainage pipes in mines frequently being flattened due to the siphon effect after drainage at higher drainage points, caused by the elevation difference in the roadway. This can easily lead to pipe breaks and weld detachment, seriously affecting the safe operation of the mine drainage system. This invention enables timely detection and repair of pipeline problems through regular maintenance and inspection, ensuring drainage efficiency and safety. It aims to prevent pipeline deformation caused by siphon effects when the drainage system experiences a siphon effect, ensuring internal and external pressure consistency and avoiding pipe flattening due to lower internal pressure. Secondly, when the pipeline is flattened, opening butterfly valve 2 allows external air to enter through one-way check valve 3. When the internal and external pressures are equal, check valve 3 automatically closes, preventing water outflow. Furthermore, if check valve 3 malfunctions, butterfly valve 2 can be used to seal or vent the pipeline, further enhancing the safety of the drainage system. Moreover, by strengthening the pipeline structure, installing bending compensation devices, designing venting devices, increasing support and fixing points, optimizing pipeline layout, and conducting regular maintenance and inspection, the problem of siphon effect deformation in coal mine drainage pipelines can be effectively solved, improving drainage efficiency and safety in coal mines. This invention solves the problem of pipe deformation caused by the siphon effect in drainage systems, improving the safe operation of drainage systems. The device has a simple structure and ingenious design, and can effectively solve the problem of pipe deformation caused by the siphon effect in drainage systems, thus improving the safe operation of drainage systems. It is worthy of widespread application.

[0041] In this embodiment of the invention, step one involves analyzing and evaluating the project, including understanding the structural characteristics of the pipeline system, drainage conditions, and existing problems.

[0042] In this embodiment of the invention, in step two, the material with matching properties is either fiberglass or polyethylene.

[0043] In this embodiment of the invention, step seven, the maintenance and inspection items for coal mine drainage pipelines include cleaning the pipelines and checking the stability of the supports and fixing devices, in order to promptly detect and repair pipeline deformation and damage problems.

[0044] In this embodiment of the invention, in step four, the exhaust device includes a three-way pipe 1, a butterfly valve 2, and a check valve 3. The three-way pipe 1 is fixedly connected to the drainage pipe, and the butterfly valve 2 and the check valve 3 are respectively fixedly connected to the two drainage pipes of the three-way pipe 1. When the pipe is sucked flat, the butterfly valve 2 of the device is opened, and the air outside the pipe enters the drainage pipe through the one-way check valve 3. When the pressure inside and outside the drainage pipe is the same, the check valve 3 automatically closes to prevent the water from flowing out of the drainage pipe. At the same time, when the check valve 3 malfunctions, the butterfly valve 2 is operated to seal or exhaust the drainage pipe.

[0045] In this embodiment of the invention, the check valve 3 includes a valve cover 31, a rocker arm 32, a valve body 34, and a valve disc 33.

[0046] In this embodiment of the invention, the check valve 3 is a butterfly check valve.

[0047] In this embodiment of the invention, butterfly valve 2 is a butterfly gate valve.

[0048] Example 2: The main difference between this example and the first technical solution is that, taking the 4107 return route as an example, three drainage pipelines are laid. The pipeline outside the No. 2 water tank at mileage 800m will frequently experience flattening. A total of 135 drainage pipelines are installed in one route, and a total of 405 pipelines are installed in three routes. The unit price of φ315mm PE pipe is 2300 yuan / pipe. A total of 6 of these exhaust devices are installed in the three pipelines. The unit price of the device is about 1508 yuan, which realizes cost saving and consumption reduction.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solution to the deformation of coal mine drainage pipes due to the siphon effect, characterized in that: Specifically, the following steps are included: Step 1: Analyze the pipeline system: First, conduct a comprehensive analysis and evaluation of the coal mine drainage pipeline; Step 2: Select appropriate materials: Based on the characteristics of the piping system and the operating environment, select materials with matching properties to enhance the strength and pressure resistance of the pipeline; Step 3: Design bending compensation devices: Design and install bending compensation devices at pipe bends and locations with elevation differences to reduce stress concentration caused by pipe deformation and prevent further deformation. Step 4: Design an exhaust system: When the drainage system experiences a siphon effect, the inside of the drainage pipe can communicate with the external environment to ensure that the pressure inside and outside the pipe is consistent, thus avoiding the problem of the pipe being flattened due to the pressure inside the pipe being lower than the pressure outside the pipe. Step 5: Add supports and fixing points: Based on the actual situation of the pipeline system, add supports and fixing points at bends, height changes, and width changes to distribute stress and reduce the risk of deformation and rupture caused by pipeline deformation. Step Six: Optimize Pipeline Layout: When designing drainage pipelines, optimize the pipeline layout, avoid or reduce bends and changes in elevation to reduce the siphon effect and the risk of pipeline deformation. Step 7: Regular maintenance and inspection: Conduct regular maintenance and inspection of the coal mine drainage pipelines; In step four, the exhaust device includes a three-way pipe (1), a butterfly valve (2), and a check valve (3). The three-way pipe (1) is fixedly connected to the drainage pipe. The butterfly valve (2) and the check valve (3) are fixedly connected to the two drainage pipes of the three-way pipe (1). When the pipe is sucked flat, the butterfly valve (2) of the device is opened, and the air outside the pipe enters the drainage pipe through the one-way check valve (3). When the pressure inside and outside the drainage pipe is the same, the check valve (3) automatically closes to prevent the water from flowing out of the drainage pipe. At the same time, when the check valve (3) malfunctions, the butterfly valve (2) is operated to close or exhaust the drainage pipe.

2. The solution to the deformation of coal mine drainage pipelines due to siphon effect according to claim 1, characterized in that: In step one, the analysis and evaluation of the project includes understanding the structural characteristics of the piping system, drainage conditions, and existing problems.

3. The solution to the deformation of coal mine drainage pipelines due to the siphon effect according to claim 1, characterized in that: In step two, the material with matching properties is either fiberglass or polyethylene.

4. The solution to the deformation of coal mine drainage pipelines due to siphon effect according to claim 1, characterized in that: In step seven, the maintenance and inspection of coal mine drainage pipelines includes cleaning the pipelines and checking the stability of supports and fixing devices, in order to promptly detect and repair pipeline deformation and damage problems.

5. The solution to the deformation of coal mine drainage pipelines due to the siphon effect according to claim 1, characterized in that: The check valve (3) includes a valve cover (31), a rocker arm (32), a valve body (34), and a valve disc (33).

6. The solution to the deformation of coal mine drainage pipelines due to the siphon effect according to claim 1, characterized in that: The check valve (3) is a butterfly check valve.

7. The solution to the deformation of coal mine drainage pipelines due to siphon effect according to claim 1, characterized in that: The butterfly valve (2) is a butterfly gate valve.

Images