Anti-freezing pipeline capable of emptying pipeline accumulated water through air pressure

Abstract

The invention belongs to the technical field of anti-freezing pipelines, and particularly relates to an anti-freezing pipeline for emptying pipeline accumulated water through air pressure, which comprises a branch pipe, a water supply pipe and an inflating mechanism, the branch pipe is communicated with the water supply pipe, an air inlet pipe is arranged on the branch pipe close to the surface layer, a one-way valve is mounted in the air inlet pipe, and the inflating mechanism comprises an air pump and a connecting pipe. The air pump is connected with the air inlet pipe through a connecting pipe, a liquid level collecting module is installed at the position, below the frozen soil layer, of the branch pipe, starting of the air pump is controlled by the control module, and a water and air isolation structure is further arranged at the position, close to the liquid level collecting module, in the branch pipe. According to the system, the freezing risk monitoring time zone and the lowest liquid level are set through the control module, the air pump is automatically started at night for inflation and drainage, the liquid level in the branch pipe is reduced to be below the frozen soil layer, pipeline freezing is avoided from the source, and the anti-freezing effect is achieved; and the installation and the maintenance are very convenient.

Description

Technical Field

[0001] The invention relates to the technical field of antifreeze pipes, in particular to an antifreeze pipe capable of emptying accumulated water in the pipe by air pressure. Background Art

[0002] In cold regions, accumulated water in pipes easily freezes during winter, causing them to expand and rupture. This not only wastes water resources but also creates high repair costs and inconvenience for users. Existing methods for antifreezing pipes often use methods such as wrapping with insulation materials, electric heating, and mechanical drainage. However, insulation materials age easily, decreasing their effectiveness year by year. Electric heating consumes a lot of energy and still poses the risk of freezing pipes in extremely low temperatures. Mechanical drainage requires the installation of a mechanical valve below the permafrost layer, which presents significant installation and subsequent maintenance challenges. Therefore, a new antifreeze pipe design has been proposed that uses air pressure to drain accumulated water. Summary of the Invention

[0003] Based on the technical problems existing in the prior art, the present invention proposes an antifreeze pipe that uses air pressure to empty the water accumulated in the pipe.

[0004] The present invention proposes an antifreeze pipe for emptying water accumulated in the pipe by air pressure, comprising a branch pipe, a water supply pipe and an air charging mechanism, wherein the branch pipe is connected to the water supply pipe, an air intake pipe is provided on the branch pipe at a position close to the ground surface, a one-way valve is installed in the air intake pipe, the air charging mechanism comprises an air pump and a connecting pipe, the air pump is connected to the air intake pipe through the connecting pipe, and a liquid level acquisition module is installed on the branch pipe at a position below the frozen soil layer, the start of the air pump is controlled by the control module, and a water and air isolation structure is further provided in the branch pipe near the liquid level acquisition module; the household pipeline is connected to the branch pipe, and the freezing risk monitoring time zone T can be set in advance on the control module. z (time interval, such as night time) and minimum liquid level L min In this way, during the night period, the air pump will start to inflate the branch pipe through the connecting pipe, so that the water in the branch pipe will be discharged to the water supply pipe until the liquid level in the branch pipe reaches the lowest level. At this time, the liquid level is below the permafrost layer. In this way, the accumulated water in the branch pipe can be drained to prevent the pipe from freezing at night. The one-way valve in the air inlet pipe can prevent the air in the branch pipe from escaping.

[0005] Preferably, the water and gas isolation structure includes a cylindrical cylinder, which is fixedly connected to a fixed ring inside the branch pipe, and circular openings are respectively opened at the top and bottom of the cylindrical cylinder, and a valve core with a through hole is provided between the two circular openings, and the valve core is rotatably connected to the cylindrical cylinder through a pair of shaft columns, and gears are fixedly sleeved on the two shaft columns, and the gears are meshed and connected with a rack, and the two ends of the rack pass through the cylindrical cylinder respectively, and circular plates are respectively provided at the upper and lower parts of the cylindrical cylinder, and the circular plates are fixedly connected to the ends of the rack, and an elastic connection is formed between the circular plate and the cylindrical cylinder; the cylindrical cylinder is set at the lowest liquid level, and under normal conditions, the valve core is in a horizontal direction, and the through hole and the circular opening are oriented vertically. At this time, the valve core is in a closed state. When the user turns on the faucet to release water, the circular plate below the cylinder will move upward due to water pressure until it fits with the bottom of the cylinder. The circular plate will drive the valve core to rotate around the shaft column through the rack meshing gear until the through hole and the circular mouth coincide. At this time, the valve core is in an open state. Similarly, when the inflation mechanism is inflated, the upper circular plate will move downward due to air pressure, causing the valve core to open. When the liquid level reaches the cylinder, the inflation mechanism stops inflating, and the pressure above and below the cylinder will reach equilibrium. At this time, the circular plate will drive the valve core to return to a closed state under the action of elastic force, thereby isolating the air and water above and below.

[0006] Preferably, a pair of positioning posts passing through the circular plate are fixed on the top of the cylindrical tube, and a spring is provided on the positioning posts. The two ends of the spring are fixedly connected to the cylindrical tube and the positioning posts respectively; the elastic force of the spring can reset the valve core and keep it in the closed state.

[0007] Preferably, the water and air isolation structure includes a conical diaphragm, which is made of elastic material and fixedly connected to a fixed ring inside the branch pipe. A small hole is provided at the tip of the conical diaphragm; the conical diaphragm is set at the lowest liquid level. When the user turns on the faucet to release water, the conical diaphragm will expand upward due to the water pressure, and the small hole will expand, so that the conical diaphragm is in an open state. When the inflation mechanism is inflated, the conical diaphragm will expand downward due to the air pressure, and the small hole will also expand, so that the conical diaphragm is in an open state. When the liquid level reaches the conical diaphragm, the inflation mechanism stops inflating, and the pressure above and below the conical diaphragm will reach equilibrium. At this time, the conical diaphragm will return to its original shape under the action of elasticity, and the small hole will close, thereby isolating the air and water above and below.

[0008] Preferably, it also includes: a pressure acquisition module, installed on the connecting pipe, for monitoring the inflation pressure in real time, and generating an air pressure fluctuation coefficient through the control module; a liquid level acquisition module for monitoring the liquid level height in the branch pipe in real time, and generating a liquid level maintenance coefficient through the control module; the control module conducts a comprehensive analysis of the generated liquid level maintenance coefficient and air pressure fluctuation coefficient, generates an evaluation coefficient, determines whether the inflation mechanism needs to increase the inflation intensity, compares the evaluation coefficient with a pre-set evaluation coefficient reference threshold, and controls the working state of the inflation mechanism according to the comparison result.

[0009] Preferably, the output and input of the liquid level acquisition module and the output and input of the pressure acquisition module are electrically connected to the input and output of the control module respectively, and the output of the control module is electrically connected to the input of the air pump.

[0010] Preferably, the control module controls the working state of the inflation mechanism according to the comparison result in the following steps:

[0011] Real-time detection: The pressure acquisition module collects the inflation pressure; the liquid level acquisition module collects the liquid level height in the branch pipe;

[0012] Coefficient calculation: The control module calculates the liquid level maintenance coefficient, air pressure fluctuation coefficient and evaluation coefficient F pg ;

[0013] Dynamic adjustment: If F pg <F op :Maintain the current inflation parameters; if F pg ≥F op : Increase inflation pressure and inflation time, F op is the reference threshold.

[0014] Preferably, the generation logic of the liquid level maintenance coefficient is:

[0015] S1. Use the liquid level acquisition module to obtain the actual liquid level height in the branch pipe at different times within T time when the inflation mechanism inflates the branch pipe, and calibrate the actual liquid level height obtained at the mth time within T time as L m ,m=1, 2, 3, 4, ..., t, m is a positive integer;

[0016] S2. Calculate the liquid level maintenance coefficient. The calculation expression is:

[0017]

[0018] Where t is the number of sampling times within time T.

[0019] Preferably, the generation logic of the air pressure fluctuation coefficient is:

[0020] S1. Obtain the actual inflation pressure of the inflation mechanism at different times during the T time when the inflation mechanism inflates the branch pipe through the pressure acquisition module, and calibrate the actual inflation pressure obtained at the mth time during the T time as P. n ,n=1, 2, 3, 4, ..., k, n is a positive integer;

[0021] S2. Calculate the air pressure fluctuation coefficient. The calculation expression is:

[0022]

[0023] Where, is the average air pressure within T time; t is the number of sampling times within T time.

[0024] Preferably, the control module performs a formula analysis according to the formula:

[0025]

[0026] Where r1 and r2 are the preset weight coefficients of pressure and residual density, r1+r2=1.

[0027] Compared with the prior art, the present invention provides an antifreeze pipe that uses air pressure to empty the pipe of accumulated water, which has the following beneficial effects:

[0028] 1. An antifreeze pipe that uses air pressure to empty the pipe of water. The freezing risk monitoring time zone and the minimum liquid level are set through the control module. The air pump is automatically started at night to inflate and drain water, lowering the liquid level in the branch pipe to below the permafrost layer, thus preventing the pipe from freezing at the root and achieving an antifreeze effect. The inflation mechanism can be installed above the ground, which is very convenient in terms of installation and maintenance.

[0029] 2. An antifreeze pipe that uses air pressure to empty the accumulated water in the pipe. The designed water and air isolation structure, whether it is a cylindrical tube-valve core structure or a conical diaphragm structure, can automatically open or close according to the changes in water pressure and air pressure, ensuring smooth passage during normal water use and drainage of the pipe. After drainage is completed, it effectively isolates air and water to prevent gas leakage and residual water freezing.

[0030] 3. An antifreeze pipe that uses air pressure to drain water from the pipe. The additional pressure acquisition module and liquid level acquisition module cooperate with the control module to monitor the inflation pressure and liquid level in real time. By calculating the liquid level maintenance coefficient and air pressure fluctuation coefficient and generating an evaluation coefficient, it can dynamically adjust the working state of the inflation mechanism and accurately control the inflation intensity and duration. While ensuring the drainage effect, it can achieve energy saving and consumption reduction, and improve the stability and reliability of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a schematic diagram of the overall structure of an antifreeze pipe proposed by the present invention that uses air pressure to empty the pipe of water;

[0032] Figure 2 This is a schematic diagram of the back structure of a branch pipe of an antifreeze pipe proposed by the present invention for emptying water accumulated in the pipe by air pressure;

[0033] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0034] Figure 4 This is a schematic diagram of the state changes of the conical diaphragm of the antifreeze pipe proposed by the present invention, which is used to empty the pipe water by air pressure, when the branch pipe is flowing with water and after the water is turned off;

[0035] Figure 5 This is a schematic diagram of the state changes of a conical diaphragm of an antifreeze pipe proposed by the present invention for evacuating water accumulated in the pipe by air pressure when the branch pipe is inflated and after the air is stopped;

[0036] Figure 6 This is a system block diagram of an antifreeze pipeline proposed by the present invention that uses air pressure to empty the pipeline of water.

[0037] In the figure: 1. Branch pipe; 2. Water supply pipe; 3. Air pump; 4. Air inlet pipe; 5. Connecting pipe; 6. Liquid level acquisition module; 7. Fixed ring; 8. Cylindrical barrel; 9. Round mouth; 10. Valve core; 11. Through hole; 12. Shaft column; 13. Gear; 14. Rack; 15. Round plate; 16. Positioning column; 17. Spring; 18. Conical diaphragm; 19. Pressure acquisition module. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] Reference Figures 1-6An antifreeze pipe for evacuating water accumulated in the pipe by air pressure comprises a branch pipe 1, a water supply pipe 2 and an air charging mechanism. The branch pipe 1 is connected to the water supply pipe 2. An air intake pipe 4 is provided on the branch pipe 1 near the surface. A one-way valve is installed in the air intake pipe 4. The air charging mechanism comprises an air pump 3 and a connecting pipe 5. The air pump 3 is connected to the air intake pipe 4 via the connecting pipe 5. A liquid level acquisition module 6 is installed on the branch pipe 1 below the frozen soil layer. The activation of the air pump 3 is controlled by a control module. A water and air isolation structure is also provided in the branch pipe 1 near the liquid level acquisition module 6.

[0041] When in use, the household pipe is connected to the branch pipe 1, and the freezing risk monitoring time zone T can be set in advance on the control module. z (time interval, such as night time) and minimum liquid level L min In this way, during the night period, the air pump 3 will start to inflate the branch pipe 1 through the connecting pipe 5, so that the water in the branch pipe 1 is discharged to the water supply pipe 2 until the liquid level in the branch pipe 1 reaches the lowest level. At this time, the liquid level is below the frozen soil layer. In this way, the accumulated water in the branch pipe 1 can be drained to prevent the pipe from freezing at night. The one-way valve in the air inlet pipe 4 can prevent the air in the branch pipe 1 from escaping.

[0042] In Example 1, the water and gas isolation structure includes a cylindrical tube 8, which is fixedly connected to the fixing ring 7 inside the branch pipe 1. Circular openings 9 are respectively opened at the top and bottom of the cylindrical tube 8. A valve core 10 with a through hole 11 is provided between the two circular openings 9. The valve core 10 is rotatably connected to the cylindrical tube 8 via a pair of shaft columns 12. Gears 13 are fixedly sleeved on the two shaft columns 12. The gears 13 are meshed with racks 14. The two ends of the rack 14 pass through the cylindrical tube 8 respectively. Circular plates 15 are respectively provided at the upper and lower parts of the cylindrical tube 8. The circular plates 15 are fixedly connected to the ends of the rack 14. An elastic connection is formed between the circular plates 15 and the cylindrical tube 8.

[0043] When in use, the cylindrical tube 8 is set at the lowest liquid level. Under normal circumstances, the valve core 10 is in a horizontal direction, and the through hole 11 and the circular mouth 9 are directed vertically. At this time, the valve core 10 is in a closed state. When the user turns on the faucet to release water, the circular plate 15 below the cylindrical tube 8 will move upward due to water pressure until it fits with the bottom of the cylindrical tube 8. The circular plate 15 will engage the gear 13 through the rack 14 to drive the valve core 10 to rotate around the shaft column 12 until the through hole 11 and the circular mouth 9 coincide with each other. At this time, the valve core 10 is in an open state. Similarly, when the inflation mechanism is inflated, the upper circular plate 15 will move downward due to air pressure, causing the valve core 10 to open. When the liquid level reaches the cylindrical tube 8, the inflation mechanism stops inflating, and the pressure above and below the cylindrical tube 8 will reach equilibrium. At this time, the circular plate 15 will drive the valve core 10 to return to the closed state under the action of elastic force, thereby isolating the air and water above and below.

[0044] A pair of positioning posts 16 passing through the circular plate 15 are fixed on the top of the cylindrical tube 8. A spring 17 is sleeved on the positioning posts 16. The two ends of the spring 17 are fixedly connected to the cylindrical tube 8 and the positioning posts 16 respectively.

[0045] When in use, the valve core 10 can be reset and kept in the closed state by the elastic force of the spring 17 .

[0046] In Example 2, the water and gas isolation structure includes a conical shield 18, which is made of elastic material and is fixedly connected to the fixing ring 7 inside the branch pipe 1. A small hole is opened at the tip of the conical shield 18;

[0047] When in use, the conical shield 18 is set at the lowest liquid level, such as Figure 4 As shown, when the user turns on the faucet to release water, the conical shield 18 will expand upward due to the water pressure, and the small hole will expand, so that the conical shield 18 is in an open state. Figure 5 As shown, when the inflation mechanism is inflated, the conical diaphragm 18 will expand downward due to the air pressure, and the small holes will also expand, so that the conical diaphragm 18 is in an open state. When the liquid level reaches the conical diaphragm 18, the inflation mechanism stops inflating, and the pressure above and below the conical diaphragm 18 will reach equilibrium. At this time, the conical diaphragm 18 will return to its original shape under the action of elasticity, and the small holes will close, thereby isolating the air and water above and below.

[0048] In another embodiment, an antifreeze pipe for evacuating accumulated water from the pipe by air pressure further comprises:

[0049] The pressure acquisition module 19 is installed on the connecting pipe 5 and is used to monitor the inflation pressure in real time and generate the pressure fluctuation coefficient through the control module;

[0050] The liquid level acquisition module 6 is used to monitor the liquid level in the branch pipe 1 in real time and generate a liquid level maintenance coefficient through the control module;

[0051] It should be noted that the liquid level acquisition module 6 can be a liquid level sensor or other equipment capable of monitoring the liquid level height in the branch pipe 1 in real time, the pressure acquisition module 19 can be a pressure sensor or other equipment capable of monitoring the inflation pressure in real time, and the control module is an embedded controller (such as the STM32 series), which is installed above the ground surface and integrates a data fusion algorithm. Therefore, the liquid level acquisition module 6, the pressure acquisition module 19 and the control module are not specifically limited here and can be selected according to actual needs;

[0052] When in use, the control module conducts a comprehensive analysis of the generated liquid level maintenance coefficient and air pressure fluctuation coefficient to generate an evaluation coefficient, determines whether the inflation mechanism needs to increase the inflation intensity, compares the evaluation coefficient with the pre-set evaluation coefficient reference threshold, and controls the working state of the inflation mechanism according to the comparison result.

[0053] Among them, the output end and input end of the liquid level acquisition module 6 and the output end and input end of the pressure acquisition module 19 are electrically connected to the input end and output end of the control module respectively, and the output end of the control module is electrically connected to the input end of the air pump 3.

[0054] In another embodiment, through the cooperation of the liquid level acquisition module 6, the pressure acquisition module 19 and the control module, the control module comprehensively analyzes the generated liquid level maintenance coefficient and the air pressure fluctuation coefficient to generate an evaluation coefficient, determines whether the inflation mechanism needs to increase the inflation intensity, compares the evaluation coefficient with a preset evaluation coefficient reference threshold, and controls the working state of the inflation mechanism according to the comparison result. The specific execution steps are as follows:

[0055] Real-time detection: the pressure acquisition module 19 acquires the inflation pressure; the liquid level acquisition module 6 acquires the liquid level height in the branch pipe 1;

[0056] Coefficient calculation:

[0057] Calculate the liquid level maintenance coefficient:

[0058] The liquid level maintenance coefficient indicates the efficiency of draining residual liquid from the pipeline and reflects the effectiveness of the antifreeze system during pressurization. Its function is to monitor whether the liquid water in the pipeline is effectively drained out of the frozen ground. Lower values indicate greater residual water content and a greater risk of freezing, requiring increased aeration.

[0059] The generation logic of the liquid level maintenance coefficient is:

[0060] S1. The actual liquid level height in the branch pipe 1 at different times during the T time when the inflation mechanism inflates the branch pipe 1 is obtained through the liquid level acquisition module 6. The actual liquid level height obtained at the mth time during the T time is calibrated as L m ,m=1, 2, 3, 4, ..., t, m is a positive integer;

[0061] S2. Calculate the liquid level maintenance coefficient. The calculation expression is:

[0062]

[0063] Where t is the number of sampling times within time T.

[0064] Calculate the pressure fluctuation coefficient:

[0065] The pressure fluctuation coefficient represents changes in internal pipe resistance and reflects structural anomalies (such as ice, blockage, or wall attachments). It detects real-time changes in pipe resistance. A larger value indicates a possible phase change (water to ice) or mechanical blockage within the pipe, necessitating increased inflation.

[0066] The generation logic of the air pressure fluctuation coefficient is:

[0067] S1. The pressure acquisition module 19 is used to obtain the actual inflation pressure of the inflation mechanism at different times during the T time when the inflation mechanism inflates the branch pipe 1. The actual inflation pressure obtained at the mth time during the T time is calibrated as P. n ,n=1, 2, 3, 4, ..., k, n is a positive integer;

[0068] S2. Calculate the air pressure fluctuation coefficient. The calculation expression is:

[0069]

[0070] Where, is the average air pressure within T time; t is the number of sampling times within T time.

[0071] Calculate the evaluation coefficient F pg :

[0072] The control module is used to analyze the liquid level maintenance coefficient and the air pressure fluctuation coefficient in a formula according to the formula:

[0073]

[0074] Where r1 and r2 are the preset weight coefficients of pressure and residual density, r1+r2=1.

[0075] Dynamic adjustment: If F pg <F op :Maintain the current inflation parameters; if F pg ≥F op :Increase the inflation pressure by increasing the power of the air pump 3 and at the same time increase the inflation time set by the system, F op is the reference threshold.

[0076] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An antifreeze pipe for emptying water accumulated in the pipe by air pressure, comprising a branch pipe (1), a water supply pipe (2) and an air filling mechanism, characterized in that: The branch pipe (1) is connected to the water supply pipe (2), and an air intake pipe (4) is provided on the branch pipe (1) at a position close to the ground surface. A one-way valve is installed in the air intake pipe (4). The inflation mechanism comprises an air pump (3) and a connecting pipe (5). The air pump (3) is connected to the air intake pipe (4) via the connecting pipe (5). A liquid level acquisition module (6) is installed on the branch pipe (1) at a position below the frozen soil layer. The start-up of the air pump (3) is controlled by the control module. A water and air isolation structure is also provided in the branch pipe (1) at a position close to the liquid level acquisition module (6).

2. The antifreeze pipe for draining water from the pipe by air pressure according to claim 1, characterized in that: The water and gas isolation structure comprises a cylindrical barrel (8), which is fixedly connected to a fixing ring (7) inside the branch pipe (1), and a circular opening (9) is respectively provided at the top and bottom of the cylindrical barrel (8). A valve core (10) having a through hole (11) is provided between the two circular openings (9). The valve core (10) is rotatably connected to the cylindrical barrel (8) via a pair of shaft columns (12). Gears (13) are respectively fixedly sleeved on the two shaft columns (12). The gears (13) are meshedly connected to a rack (14). The two ends of the rack (14) respectively pass through the cylindrical barrel (8). Circular plates (15) are respectively provided at the upper and lower parts of the cylindrical barrel (8). The circular plates (15) are fixedly connected to the ends of the rack (14). An elastic connection is formed between the circular plates (15) and the cylindrical barrel (8).

3. The antifreeze pipe for draining water from the pipe by air pressure according to claim 2, characterized in that: A pair of positioning posts (16) passing through the circular plate (15) are fixed to the top of the cylindrical tube (8); a spring (17) is sleeved on the positioning posts (16); and two ends of the spring (17) are fixedly connected to the cylindrical tube (8) and the positioning posts (16), respectively.

4. The antifreeze pipe for draining water from the pipe by air pressure according to claim 1, characterized in that: The water and gas isolation structure comprises a conical partition cover (18), which is made of elastic material and fixedly connected to a fixing ring (7) inside the branch pipe (1). A small hole is provided at the tip of the conical partition cover (18).

5. The antifreeze pipe for draining water from the pipe by air pressure according to claim 1, characterized in that: Also includes: A pressure acquisition module (19), mounted on the connecting pipe (5), is used to monitor the inflation pressure in real time and generate a pressure fluctuation coefficient through the control module; The liquid level acquisition module (6) is used to monitor the liquid level height in the branch pipe (1) in real time and generate a liquid level maintenance coefficient through the control module; The control module performs a comprehensive analysis on the generated liquid level maintenance coefficient and air pressure fluctuation coefficient to generate an evaluation coefficient, which is compared with a preset evaluation coefficient reference threshold, and the working state of the inflation mechanism is controlled according to the comparison result.

6. The antifreeze pipe for draining water from the pipe by air pressure according to claim 5, characterized in that: The output end and input end of the liquid level acquisition module (6) and the output end and input end of the pressure acquisition module (19) are electrically connected to the input end and output end of the control module respectively, and the output end of the control module is electrically connected to the input end of the air pump (3).

7. The antifreeze pipe for draining water from the pipe by air pressure according to claim 5, characterized in that: The control module controls the working state of the inflation mechanism according to the comparison result in the following steps: Real-time detection: the pressure acquisition module (19) acquires the inflation pressure; the liquid level acquisition module (6) acquires the liquid level height in the branch pipe (1); Coefficient calculation: The control module calculates the liquid level maintenance coefficient, air pressure fluctuation coefficient and evaluation coefficient F pg ; Dynamic adjustment: If F pg <F op :Maintain the current inflation parameters; if F pg ≥F op : Increase inflation pressure and inflation time, F op is the reference threshold.

8. The antifreeze pipe for draining water from the pipe by air pressure according to claim 5, characterized in that: The generation logic of the liquid level maintenance coefficient is: S1. The actual liquid level height in the branch pipe (1) at different times during a time T when the inflation mechanism inflates the branch pipe (1) is obtained through the liquid level acquisition module (6). The actual liquid level height obtained at the mth time during the time T is calibrated as L m ,m=1, 2, 3, 4, ..., t, m is a positive integer; S2. Calculate the liquid level maintenance coefficient. The calculation expression is: Where t is the number of sampling times within time T.

9. The antifreeze pipe for draining water from the pipe by air pressure according to claim 8, characterized in that: The generation logic of the air pressure fluctuation coefficient is: S1. Obtain the actual inflation pressure of the inflation mechanism at different times within a time T when the inflation mechanism inflates the branch pipe (1) through the pressure acquisition module (19), and calibrate the actual inflation pressure obtained at the mth time within the time T as P n ,n=1, 2, 3, 4, ..., k, n is a positive integer; S2. Calculate the air pressure fluctuation coefficient. The calculation expression is: Where, is the average air pressure during time T; t is the number of samples within time T.

10. The antifreeze pipe for draining water from the pipe by air pressure according to claim 9, characterized in that: Through the control module, a formula analysis is performed according to the formula: Where r1 and r2 are the preset weight coefficients of pressure and residual density, r1+r2=1.

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