Pipeline anti-freezing system, control method and computer storage medium

Abstract

The invention discloses a pipeline anti-freezing system, a control method and a computer storage medium, and relates to the technical field of pipeline anti-freezing, the system comprises a first control assembly and a second control assembly, the first control assembly is installed on one side of a pipeline, and the second control assembly is installed on the other side of the pipeline; the first control assembly comprises a first temperature sensor, a first electromagnetic valve, a first water flow sensor, a first pressure sensor, a first pressure release valve and a first water / gas compressor which are communicated in sequence; the second control assembly is installed on the other side of the pipeline and comprises a second pressure release valve, a second water flow sensor, a second electromagnetic valve, a second temperature sensor, a second pressure sensor and a second water / gas compressor which are sequentially communicated in the water flow direction, wherein the second water / gas compressor is communicated between the second electromagnetic valve and the second temperature sensor through a branch pipeline. The invention further provides a pipeline anti-freezing control method, through combined application of the water / gas compressor, the electromagnetic valve and the sensor, the pipeline generates reciprocating water flow, and water consumption is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply pipelines, and more particularly to a pipeline antifreeze system, a control method and a computer storage medium. Background Art

[0002] At present, in the design of building pipelines, most water supply, drainage, and fire protection pipe sections are inevitably exposed to the air above the surface or pass through the permafrost. When winter comes and the temperature drops sharply, when the building does not use water, the water in the pipes outdoors and in the permafrost will freeze when it is not flowing, and the water pipes are prone to freezing and cracking.

[0003] Common existing anti-freezing measures for pipes include deep soil burial, insulation wrapping, electric heating cables, and pipe venting. However, excessive soil cover is costly and inconvenient for maintenance; electric heating cables consume a lot of electricity and are uneconomical. Furthermore, during freezing weather, people often turn on the tap to keep water flowing in pipes to prevent them from freezing.

[0004] Chinese utility model patent publication number CN215173228U discloses a pipe antifreeze device comprising first, second, and third pipes, an electric valve disposed between the first and second pipes, a faucet disposed at the outlet of the third pipe, and a check valve disposed on a side wall of each of the faucet and the second pipe. A temperature sensing mechanism is also disposed adjacent to the electric valve, and the electric valve and temperature sensing mechanism are electrically connected to a control mechanism. When the temperature falls below a set value, the control mechanism controls the electric valve to drain water from the faucet, the second pipe, and the third pipe, allowing air to enter the check valve to assist in drainage. When the temperature falls below the set value, the pipes and faucet are automatically drained, effectively protecting the pipes and faucets from freezing.

[0005] However, in the above technical solutions, there are problems of water consumption and waste of water resources by automatically draining the water in pipes and faucets. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a pipeline antifreeze system, a control method and a computer storage medium to solve the technical problem of water consumption in existing pipeline antifreeze devices for achieving pipeline antifreeze.

[0007] To achieve the above objectives, the first objective of the present invention is to provide a pipeline antifreeze system installed on a pipeline, comprising: a first control assembly installed on one side of the pipeline, the first control assembly comprising a first temperature sensor, a first solenoid valve, a first water flow sensor, a first pressure sensor, a first pressure relief valve, and a first water / air compressor connected between the first solenoid valve and the first water flow sensor via a branch pipeline, which are sequentially connected along the water flow direction; A second control component is installed on the other side of the pipeline. The second control component includes a second pressure relief valve, a second water flow sensor, a second solenoid valve, a second temperature sensor, a second pressure sensor, and a second water / air compressor connected in sequence along the water flow direction and between the second solenoid valve and the second temperature sensor through a branch pipeline.

[0008] Preferably, it also includes: a controller, electrically connected to the first control component and the second control component respectively; An alarm is electrically connected to the first pressure sensor, the second pressure sensor and the controller respectively.

[0009] Preferably, it also includes: a first manual service valve connected between the first end of the pipeline and the first control assembly; A second manual service valve is connected between the second end of the pipeline and the second control assembly.

[0010] Preferably, the inner diameters of the pipes are equal or the inner diameter of the end portions of the pipes is smaller than the inner diameter of the middle portion.

[0011] A second object of the present invention is to provide a pipeline antifreeze control method, which is applied to the above-mentioned pipeline antifreeze system. The pipeline antifreeze control method includes: When it is detected that the water temperature in any one of the first control component and the second control component is lower than the set temperature t0 and the flow rate in the first control component and the second control component is less than the set flow rate υ0, the pipeline antifreeze system starts working.

[0012] Preferably, the pipeline antifreeze control method specifically includes the steps of: Step S1: The pipeline antifreeze system automatically closes the first solenoid valve and the second solenoid valve in the first control component and the second control component; Step S2: The first water / gas compressor compresses the liquid. After the water pressure conduction time Δt1, the liquid area in the second water / gas compressor expands, generating a water flow from the first end to the second end on the pipeline; Step S3: The second water / air compressor compresses the liquid. After the water pressure conduction time Δt2, the liquid area in the first water / air compressor expands, generating a water flow from the second end to the first end of the pipeline; Step S4: Repeat step S2 and step S3 alternately; Step S5: When the second pressure sensor detects a pressure drop greater than ΔP or the water temperatures measured by the first temperature sensor and the second temperature sensor are both higher than t1, the first water / gas compressor and the second water / gas compressor stop running, and the first solenoid valve and the second solenoid valve are opened.

[0013] Preferably, it also includes: When the pressure on the pipeline is greater than the set pressure relief pressure P on the first pressure relief valve and the second pressure relief valve n When the pressure is released, the first pressure relief valve and the second pressure relief valve automatically open to relieve pressure.

[0014] Preferably, it also includes: When the first pressure sensor P1 is greater than the maximum allowable pressure of the system P X When the first water / gas compressor and the second water / gas compressor stop running, a fault alarm is issued through the alarm.

[0015] Preferably, the maximum allowable pressure of the system P x Greater than the set relief pressure P n .

[0016] A third object of the present invention is to provide a computer storage medium storing a computer program, wherein the computer program implements the steps of the above-described method when executed by a processor.

[0017] Compared with the prior art, the present invention has the following advantages and effects: 1. The pipeline antifreeze system of the present invention is installed on the pipeline and includes a first control component and a second control component, wherein the first control component is installed on one side of the pipeline and the second control component is installed on the other side of the pipeline. The first control component includes a first temperature sensor, a first solenoid valve, a first water flow sensor, a first pressure sensor, a first pressure relief valve, and a first water / air compressor, which are connected in sequence along the water flow direction. The first water / air compressor is connected between the first solenoid valve and the first water flow sensor via a branch pipe. The first temperature sensor is used to monitor the temperature of the fluid in the pipeline in real time. When the temperature drops to a set threshold, it triggers subsequent antifreeze operations; the first water flow sensor is used to monitor parameters such as the current water flow speed to understand whether the water flow status in the pipeline is normal; and the first pressure sensor is used to detect the pressure condition of the pipeline on that side to determine whether the pipeline is operating at normal pressure. When temperature and other parameters are monitored to meet antifreeze conditions, the first solenoid valve opens or closes according to control logic, controlling the flow of water and regulating the flow within the pipeline. The first pressure relief valve opens to relieve pressure when pipeline pressure is too high, preventing pipeline rupture and other failures caused by excessive pressure. The first water / air compressor, when needed, applies pressure to the water within the pipeline or introduces compressed gas to disturb the water flow and promote circulation, preventing the water from freezing due to stagnant temperatures. Alternatively, the compressed gas flow removes heat and prevents freezing. The second solenoid valve opens or closes according to the same control logic to control the water flow on that side. The second pressure relief valve opens to relieve pressure when the pressure within the pipeline exceeds a safe range. The second water / air compressor, connected via a branch pipe between the second solenoid valve and the second temperature sensor, functions similarly to the first water / air compressor when antifreeze is needed, pressurizing the fluid within the pipeline or introducing gas, working in conjunction with the first control component to prevent the entire pipeline from freezing. Therefore, by installing multiple sensors (temperature, water flow, and pressure) on both sides of the pipeline, accurate, real-time data on operating status parameters at different locations can be obtained. If the temperature drops below a critical point that could cause the pipeline to freeze, or if abnormalities in water flow or pressure occur, the various control components can react quickly, preventing freezing damage to the pipeline due to delayed parameter monitoring and providing timely anti-freeze protection.

[0018] 2. This pipeline antifreeze system utilizes a combination of solenoid valves, pressure relief valves, and water / air compressors to flexibly regulate the flow and pressure within the pipeline. The water / air compressors circulate water within the pipeline, preventing prolonged stagnant water from freezing and clogging the pipeline due to low temperatures. When pipeline pressure becomes excessive, the pressure relief valves immediately release pressure, preventing damage to the pipeline caused by pressure issues while also ensuring that water flows under the appropriate pressure. The combination of the water / air compressors, valves, and sensors creates a reciprocating flow in the pipeline without water consumption, effectively preventing pipeline frostbite.

[0019] 3. The pipeline antifreeze system can assist passive antifreeze measures such as deep burial and pipeline insulation, which can effectively improve the overall antifreeze level of the pipeline system. Compared with electric heating tapes, it can effectively save electricity consumption. The system has the advantages of simple structure, high reliability and energy saving. It can be widely used for auxiliary antifreeze of long-distance outdoor water supply pipes and regional outdoor fire water supply pipes in cold areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the pipeline antifreeze system in an embodiment of the present invention; Figure 2 Schematic diagram of the control structure of the pipeline antifreeze system in an embodiment of the present invention; Figure 3 Schematic diagram of the pipeline antifreeze control method in an embodiment of the present invention.

[0021] Description of reference numerals: 1- first control component; 11-first water / gas compressor; 12-first temperature sensor; 13-first solenoid valve; 14-first water flow sensor; 15-first pressure sensor; 16-first pressure relief valve; 2-First manual inspection valve; 3- Second control component; 31 - second water / gas compressor; 32 - second pressure relief valve; 33 - second water flow sensor; 34 - second solenoid valve; 35 - second temperature sensor; 36 - second pressure sensor; 4-Second manual inspection valve; 5-pipeline; 51-first end; 52-second end; 6-Controller; 7-Alarm. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal connections between two components; and they may refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] See also Figure 1-2 As shown, an embodiment of the present invention provides a pipeline antifreeze system, which is installed on a pipeline 5 and includes a first control component 1 and a second control component 3, wherein: The first control assembly 1 is installed on one side of the pipe 5. It includes a first temperature sensor 12, a first solenoid valve 13, a first water flow sensor 14, a first pressure sensor 15 (denoted by P1 in the accompanying diagram), a first pressure relief valve 16, and a first water / air compressor 11, all connected in sequence along the water flow direction. The first water / air compressor 11 is connected between the first solenoid valve 13 and the first water flow sensor 14 via a branch pipe. The first temperature sensor 12, installed on one side of the pipe 5, monitors the temperature of the fluid within the pipe 5 in real time. When the temperature drops below a set threshold, it triggers subsequent antifreeze operations. The first water flow sensor 14 monitors parameters such as the current water flow rate to determine whether the water flow within the pipe 5 is normal. The first pressure sensor 15 (P1) detects the pressure on that side of the pipe 5 to determine whether the pipe is operating at normal pressure.

[0024] The second control assembly 3 is installed on the other side of the pipe 5. It includes a second pressure relief valve 32, a second water flow sensor 33, a second solenoid valve 34, a second temperature sensor 35, a second pressure sensor 36, and a second water / air compressor 31, all connected in sequence along the water flow direction. The second water / air compressor 31 is connected between the second solenoid valve 34 and the second temperature sensor 35 via a branch pipe. The second temperature sensor 35 is installed on the other side of the pipe 5 to monitor the fluid temperature on the other side and initiate the corresponding process once the temperature falls below a preset value. The second water flow sensor 33 is used to monitor the water flow on that side, and the second pressure sensor 36 is used to detect the pressure in the pipe on that side.

[0025] Specifically in this embodiment, when it is monitored that parameters such as temperature have reached the antifreeze condition, the first solenoid valve 13 will open or close according to the control logic to control the on and off of the water flow to adjust the water flow state in the pipe 5. For example, when the temperature is low and the water flow may freeze, the opening and closing of the first solenoid valve 13 can be controlled to promote water circulation or change the water flow path. The first pressure relief valve 16 can be opened to relieve pressure when the pipeline pressure is too high to prevent failures such as pipeline rupture caused by excessive pressure. The first water / gas compressor 11 is connected between the first solenoid valve 13 and the first water flow sensor 14 through a branch pipe. When necessary, it can apply pressure to the water in the pipe 5 or introduce compressed gas to achieve disturbance of the water flow in the pipe 5, promote circulation flow, prevent water from freezing due to stagnation at low temperatures, or remove heat through the flow of compressed gas to prevent water from freezing.

[0026] The second solenoid valve 34 opens and closes according to the same control logic, controlling the water flow on that side. The second pressure relief valve 32 opens to relieve pressure when the pressure in pipeline 5 exceeds a safe range. The second water / gas compressor 31 is connected to the second solenoid valve 34 and the second temperature sensor 35 via a branch pipe. When antifreeze is required, it functions similarly to the first water / gas compressor 11, pressurizing the fluid in pipeline 5 or introducing gas, working in conjunction with the first control assembly 1 to prevent the entire pipeline from freezing.

[0027] Therefore, by installing multiple sensors (for temperature, water flow, and pressure) on both sides of pipe 5, accurate, real-time data on operating status parameters at different locations on pipe 5 can be obtained. If the temperature drops below a critical value that could cause pipe 5 to freeze, or if abnormalities in water flow or pressure occur, the various control components can react quickly, preventing pipe damage caused by delayed parameter monitoring and providing timely antifreeze protection.

[0028] The combination of a solenoid valve, a pressure relief valve, and a water / air compressor allows for flexible regulation of the water flow and pressure within pipe 5. For example, the water / air compressor encourages water circulation within pipe 5, preventing prolonged stagnant water from freezing and clogging the pipe due to low temperatures. When pipe pressure becomes excessive, the pressure relief valve promptly releases pressure, preventing damage to the pipe caused by pressure issues. It also allows water to flow at an appropriate pressure, facilitating the implementation of anti-freeze measures.

[0029] It should be noted that a water / air compressor (W / A) is a device used to compress gas or liquid. There are two types of water / air compressors (W / A): positive displacement water / air compressors and velocity water / air compressors. Positive displacement water / gas compressors are further classified into piston compressors and screw compressors according to different types of compressors. The specific working principles are as follows: A piston compressor is the most common type of positive displacement compressor. It primarily consists of a cylinder, piston, intake valve, and exhaust valve. During operation, the motor rotates the crankshaft, which, through the connecting rod, causes the piston to reciprocate linearly within the cylinder.

[0030] When the piston moves from the top dead center to the bottom dead center of the cylinder, the volume inside the cylinder gradually increases and the pressure decreases. When it drops below the intake pressure, the intake valve opens, allowing gas or liquid (in the case of partial liquid compression) to be drawn into the cylinder. When the piston moves from the bottom dead center to the top dead center, the volume inside the cylinder gradually decreases, and the gas or liquid is compressed. When the pressure inside the cylinder rises above the exhaust pressure, the exhaust valve opens, allowing the compressed gas to be discharged from the cylinder.

[0031] For example, in an air compressor, through multiple reciprocating motions of the piston, the air is gradually compressed from a low-pressure state to a higher pressure, such as from normal pressure to about 0.8MPa, for use in pneumatic tools, pneumatic control systems, etc.

[0032] A screw compressor consists primarily of a pair of intermeshing male and female rotors. These rotors are mounted within a casing, maintaining a certain gap between the rotors and between the rotors and the casing. As the rotors rotate, gas enters the volume between the rotor teeth from the intake chamber. As the rotors rotate, the volume between the teeth gradually decreases, compressing the gas. Simultaneously, lubricating oil is sprayed into the compression chamber, providing cooling, lubrication, and sealing. After mixing with the gas, the lubricating oil is separated in the exhaust chamber, the gas is discharged, and the lubricating oil is recovered and recycled.

[0033] Taking the screw air compressor as an example, it can continuously provide compressed air and has the advantages of smooth operation and high efficiency. It is often used in large-scale gas consumption in industrial production.

[0034] A sliding vane compressor primarily consists of a cylindrical cylinder, an eccentrically mounted rotor within the cylinder, and sliding vanes mounted within rotor slots. The rotor has several radial slots along its axis, allowing the vanes to slide freely within these slots. As the rotor rotates, the vanes press against the inner wall of the cylinder under the influence of centrifugal force. Each revolution of the rotor causes the vanes to slide back and forth within the cylinder. In the suction zone, the volume between the teeth gradually increases, drawing in gas; in the compression zone, the volume between the teeth gradually decreases, compressing gas; and in the exhaust zone, gas is discharged.

[0035] The vane compressor has a compact structure and small size, and is suitable for small gas compression applications, such as small air compressors used in dental equipment, small pneumatic tools, etc.

[0036] Speed type water / gas compressors are further divided into centrifugal compressors and axial flow compressors according to different types of compressors. The specific working principles are as follows: A centrifugal compressor consists primarily of a rotor, stator, and diffuser. The rotor has multiple impellers, while the stator has guide vanes and a diffuser. When a prime mover (such as an electric motor) spins the rotor at high speed, gas enters the impellers and, propelled by the impeller blades, acquires high velocity and pressure energy. The gas then flows through the diffuser, where its velocity is reduced and most of the velocity energy is converted into pressure energy, further increasing the gas pressure.

[0037] For example, in large-scale chemical production, centrifugal compressors are used to transport and compress large amounts of gas, such as ethylene gas compression in ethylene production. They can continuously process large amounts of gas and have advantages such as large flow rate and reliable operation.

[0038] Axial-flow compressors consist of a rotor and a stator. The rotor has multiple rotor blades, while the stator has stator blades. Gas enters the rotor blades axially, where they increase its kinetic energy and velocity. The gas then flows through the stator blades, which convert some of the kinetic energy into pressure energy while redirecting the flow. This process is repeated, gradually compressing the gas. Axial-flow compressors are primarily used in large gas turbines, aircraft engines, and other equipment to compress large quantities of air or other gases to provide sufficient oxygen for combustion and other processes.

[0039] For further information, see Figure 1 As shown, the pipeline antifreeze system also includes a controller 6 and an alarm 7, wherein: The controller 6 is electrically connected to the first control assembly 1 and the second control assembly 3 respectively; the alarm 7 is electrically connected to the first pressure sensor 15 (P1), the second pressure sensor 36 and the controller 6 respectively.

[0040] Specifically in this embodiment, the controller 6 issues corresponding control instructions to the solenoid valves, pressure relief valves, water / air compressors and other actuators in the first control component 1 and the second control component 3 based on the pre-set antifreeze control logic and the received sensor data.

[0041] For example, when it is detected that the temperature of the pipeline on one side is too low, the water flow speed slows down, and the pressure changes abnormally, the controller 6 will make a comprehensive judgment and instruct the solenoid valve on that side to open or close to control the water flow path; at the same time, it will reasonably adjust the switch state of the pressure relief valve to stabilize the pipeline pressure, and control the operation of the water / gas compressor to promote water circulation or introduce gas, etc., to implement anti-freeze measures.

[0042] If the pressure data collected by first pressure sensor 15 (P1) or second pressure sensor 36 exceeds the normal range and the degree of excess reaches the triggering condition of alarm 7, alarm 7 will receive the corresponding signal and immediately activate the alarm function. At the same time, if other parameters of pipeline 5 are abnormal and controller 6 analyzes and determines that there may be an emergency situation such as a serious risk of freezing, controller 6 will also send a signal to alarm 7, causing it to issue an alarm reminder and notify relevant personnel to take timely measures.

[0043] As a result, the controller 6 realizes centralized management and unified scheduling of multiple control components on both sides of the pipeline 5. It can accurately control the operating status of equipment such as solenoid valves, pressure relief valves and water / air compressors based on real-time monitoring data at different positions of the pipeline 5, making anti-freezing measures more scientific, reasonable and targeted, and improving the intelligence level and control accuracy of the entire pipeline anti-freezing system; the alarm 7 is connected to the pressure sensor and the controller 6, and can issue an alarm in time when an emergency such as abnormal pressure in the pipeline 5 occurs, reminding the staff to respond quickly, effectively avoiding safety accidents such as rupture and leakage caused by excessive or low pipeline pressure, and further ensuring the safe and stable operation of the pipeline system.

[0044] For further information, see Figure 1 As shown, the pipeline antifreeze system also includes a first manual inspection valve 2 and a second manual inspection valve 4, wherein: The first manual service valve 2 is connected between the first end 51 of the pipeline 5 and the first control assembly 1 ; the second manual service valve 4 is connected between the second end 52 of the pipeline 5 and the second control assembly 3 .

[0045] Therefore, when the pipeline antifreeze system is operating normally, the first manual inspection valve 2 and the second manual inspection valve 4 are in the open state, and the medium in the pipeline can pass through these valves smoothly and flow to the respectively connected control components (the first control component 1 and the second control component 3), and then pass through a series of subsequent monitoring and control equipment to ensure the normal antifreeze operation of the pipeline system.

[0046] When maintenance is required on the pipeline system or its control components, the manual service valves on the corresponding sides can be closed. For example, to inspect the first control component 1, the first manual service valve 2 is closed first. This cuts off the passage between the first end 51 of the pipeline 5 and the first control component 1, preventing the medium in the pipeline from flowing into the first control component 1. This makes it easier for workers to repair the component and the corresponding parts of the pipeline, replace parts, and other operations, while also avoiding safety hazards such as medium leakage during the maintenance process.

[0047] For further information, see Figure 1 As shown, the inner diameters of the pipes 5 are equal or the inner diameters of the ends of the pipes 5 are smaller than the inner diameter of the middle section.

[0048] When the inner diameters of pipes 5 are equal, the medium (e.g., water, gas, etc.) flowing within the pipes maintains a relatively uniform and stable flow state. Parameters such as the velocity and flow rate of the fluid within the pipes can be easily calculated and predicted using conventional fluid mechanics principles. This allows the first and second control components 1 and 3 to monitor and control the fluid within the pipes based on relatively stable flow parameters, ensuring the smooth implementation of antifreeze measures.

[0049] If the inner diameter of the ends of pipe 5 is smaller than that of the middle section, that is, pipe 5 is in a "large in the middle and small at the ends" state, the flow rate of the medium will vary when flowing into and out of the middle section of pipe 5. When the inner diameter of the ends is smaller, the flow rate is relatively faster. When the medium flows into the area with a larger inner diameter in the middle section, the flow rate will be correspondingly slower. This inner diameter change affects the flow state of the fluid in pipe 5, and in turn affects the data collected by monitoring equipment such as water flow sensors and pressure sensors in the pipeline antifreeze system.

[0050] For example, changes in flow rate will cause fluctuations in the water flow rate signal detected by the water flow sensor, and the pressure sensor will also detect changes in pressure due to changes in the fluid flow state. These changing data will be fed back to the controller 6, and the controller 6 will make corresponding adjustments to the actuators in the first control component 1 and the second control component 3 according to the preset control logic to ensure the normal implementation of the pipeline antifreeze function.

[0051] Another preferred embodiment of the present invention further provides a pipeline antifreeze control method, which is applied to the above-mentioned pipeline antifreeze system. The pipeline antifreeze control method includes: When it is detected that the water temperature in any one of the first control component 1 and the second control component 3 is lower than the set temperature t0, and the flow rate in the first control component 1 and the second control component 3 is less than the set flow rate υ0, the pipeline antifreeze system starts working.

[0052] This control method considers two key factors, water temperature and flow rate, to activate antifreeze measures. The system activates only when both the water temperature and flow rate fall below set points. This precisely targets freezing-prone conditions and avoids unnecessary activation of the antifreeze system. This saves energy and resources while effectively preventing pipe cracking due to low temperatures, ensuring safe operation.

[0053] It is important to note that the thresholds for setting temperature t0 and flow rate υ0 can be flexibly adjusted and optimized based on the actual operating conditions of the pipeline, the characteristics of the conveying medium, and local climatic conditions. This allows the pipeline antifreeze system to better adapt to various complex operating environments, meet the needs of different users, and improve the system's versatility and adjustability.

[0054] See also Figure 3 As shown, in another preferred embodiment of the present invention, the pipeline antifreeze control method specifically includes the steps of: Step S1: the pipeline antifreeze system automatically closes the first solenoid valve 13 and the second solenoid valve 34 in the first control component 1 and the second control component 3.

[0055] During this step, the pipeline antifreeze system can automatically close the first solenoid valve 13 and the second solenoid valve 34 in the first control component 1 and the second control component 3. At this time, the water flow in the pipeline 5 is temporarily blocked, preparing for the subsequent operation of generating water flow through the water / air compressor.

[0056] Step S2 : The first water / air compressor 11 compresses the liquid. After the water pressure conduction time Δt1 , the liquid area in the second water / air compressor 31 expands, generating a water flow from the first end 51 to the second end 52 on the pipeline 5 .

[0057] In this step, the first water / gas compressor 11 starts to compress the liquid in the pipe 5. After the water pressure conduction time Δt1, the liquid in the second water / gas compressor 31 will expand due to the water pressure transmission. This expansion effect causes the pipe 5 to form a first end 51 (also known as the attached Figure 1 A end in the middle) to the second end 52 (also known as the attached Figure 1 The water flowing at the B end in the pipe 5 causes the liquid in the pipe 5 to flow in one direction.

[0058] Step S3 : The second water / air compressor 31 compresses the liquid. After the water pressure conduction time Δt2, the liquid area in the first water / air compressor 11 expands, generating a water flow from the second end 52 to the first end 51 on the pipeline 5 .

[0059] In this step, the second water / gas compressor 31 begins to compress the liquid. After the water pressure conduction time Δt2, the liquid area in the first water / gas compressor 11 expands. At this time, water flow is generated from the second end 52 to the first end 51 in the pipeline 5, achieving a reversal of the water flow direction.

[0060] Step S4: Repeat step S2 and step S3 alternately; In this step, by repeatedly and alternately executing step S2 and step S3, the water flow in the pipe 5 is made to continuously flow forward and reverse within a control cycle, and the liquid in the pipe 5 is always in a dynamic circulation state during this process.

[0061] By alternating steps S2 and S3, the liquid in pipe 5 continues to circulate. Since the liquid is not easily frozen during the flow process, the risk of the pipe being frozen is greatly reduced, effectively preventing the pipe from cracking due to low temperatures, and ensuring the normal operation and service life of the pipe.

[0062] Step S5: When the second pressure sensor 36 detects a pressure drop greater than ΔP or the water temperatures measured by the first temperature sensor 12 and the second temperature sensor 35 are both higher than t1, the first water / gas compressor 11 and the second water / gas compressor 31 stop running, and the first solenoid valve 13 and the second solenoid valve 34 are opened.

[0063] In this step, when the second pressure sensor 36 detects a pressure drop greater than ΔP or the water temperatures measured by the first temperature sensor 12 and the second temperature sensor 35 are both higher than t1, the first water / gas compressor 11 and the second water / gas compressor 31 stop running, and the first solenoid valve 13 and the second solenoid valve 34 are reopened to restore the normal water flow state of the pipeline 5.

[0064] This method can accurately control the start and stop of antifreeze measures according to the actual operating conditions and temperature conditions of pipeline 5, avoid unnecessary energy waste, and ensure that the pipeline can normally transport the medium when antifreeze is not required.

[0065] During the antifreeze process, the forward and reverse circulation of water and the change in water pressure help maintain the pressure balance in the pipeline 5, reduce safety hazards such as pipeline rupture caused by excessive or insufficient local pressure, and improve the stability of the pipeline system operation.

[0066] In addition, this control method can flexibly adjust parameters such as water pressure conduction time Δt1, Δt2, temperature threshold t1, and pressure drop threshold ΔP according to different pipeline lengths, inner diameters, materials, etc., to adapt to various complex pipeline systems and operating environments, and has strong versatility and operability.

[0067] In another preferred embodiment of the present invention, the pipeline antifreeze control method further includes: when the pressure on the pipeline 5 is greater than the set pressure relief pressure P on the first pressure relief valve 16 and the second pressure relief valve 32, n When the pressure is released, the first pressure relief valve 16 and the second pressure relief valve 32 are automatically opened to relieve pressure.

[0068] Therefore, during the operation of the pipeline antifreeze system, the first pressure sensor 15 (P1) in the first control component 1 and the second pressure sensor 36 in the second control component 3 will continuously monitor the pressure in the pipeline 5. When the pressure in the pipeline 5 rises and reaches the set pressure relief threshold P n , the system will determine that the current pipeline 5 is in an abnormal state of excessive pressure.

[0069] Once the pressure is greater than the set relief pressure P n Under the condition of the first pressure relief valve 16 and the second pressure relief valve 32, the first pressure relief valve 16 and the second pressure relief valve 32 will automatically open. At this time, the high-pressure fluid in the pipeline 5 is released to the corresponding pressure relief pipeline or safe area through the pressure relief valve, thereby quickly reducing the pressure in the pipeline 5 and restoring the pipeline pressure to a safe range.

[0070] In another preferred embodiment of the present invention, the pipeline antifreeze control method further includes: when the first pressure sensor 15 (P1) is greater than the maximum allowable pressure of the system P XWhen the first water / gas compressor 11 and the second water / gas compressor 31 stop running, a fault alarm is issued through the alarm device 7.

[0071] When the pressure in the pipe 5 rises abnormally and exceeds the maximum allowable pressure P x When the compressor stops working, the first water / gas compressor 11 and the second water / gas compressor 31 stop running in time, avoiding equipment damage caused by the compressor continuing to work in a high-pressure environment, such as motor overload, rupture of internal components of the compressor due to excessive pressure, etc., thereby extending the service life of the equipment.

[0072] Excessive pressure can cause pipeline 5 and related components to exceed their limits, leading to serious accidents such as rupture and leakage. By stopping the water / gas compressor, further pressure increases are prevented. At the same time, the alarm 7 promptly sounds an alarm, allowing relevant personnel to quickly take emergency measures, such as shutting down the system and performing emergency repairs, effectively preventing the occurrence and escalation of the accident and ensuring the safe operation of the entire system.

[0073] The fault alarm issued by the alarm 7 can promptly notify maintenance personnel that there is a problem of excessive pressure in the pipeline system, so that maintenance personnel can quickly locate the fault point, that is, what is the cause of the pressure excess, such as pipeline blockage, pressure relief valve failure, etc., and then quickly take targeted repair measures to reduce system downtime and failure losses.

[0074] In another preferred embodiment of the present invention, the maximum allowable pressure of the system P x Greater than the set relief pressure P n .

[0075] During the pressure rise process, when the pipeline pressure reaches the set pressure relief pressure P n When the pressure relief valve is triggered, the maximum allowable pressure of the system P x As a stricter upper pressure limit, it may only be reached in special circumstances such as when the pressure relief valve may fail.

[0076] When the pipeline pressure exceeds the set pressure relief pressure P n When the pressure is released, the first pressure relief valve 16 and the second pressure relief valve 32 automatically open to release pressure and reduce the pressure in the pipeline. If the pipeline pressure continues to rise due to a pressure relief valve failure or other abnormal factors, until it reaches the maximum allowable pressure of the system P x When the system stops the operation of the first water / gas compressor 11 and the second water / gas compressor 31, the system will immediately stop the operation of the first water / gas compressor 11 and the second water / gas compressor 31, and send out a fault alarm through the alarm 7 to remind relevant personnel to deal with it in time.

[0077] Another embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned method are implemented.

[0078] The steps of the method are encoded into a computer program and stored in a computer storage medium. When the pipeline antifreeze control function needs to be executed, the computer system (e.g., the controller 6 of the pipeline antifreeze system) loads the computer program from the storage medium into the memory. The computer program loaded into the memory is executed by the processor, which reads the instructions one by one and performs corresponding operations based on the instructions, thereby implementing the various steps of the pipeline antifreeze control method, such as monitoring sensor data, controlling the operation of the solenoid valve and the water / air compressor, determining pressure and temperature conditions to start or stop antifreeze measures, and triggering an alarm when necessary.

[0079] During execution, the processor communicates and controls the system's various hardware components (such as sensors, solenoid valves, water / air compressors, and alarms) through input / output (I / O) interfaces. Based on program logic, the processor reads sensor values, sends control signals to actuators, and receives feedback to ensure accurate and timely control.

[0080] Computer programs typically execute monitoring and control logic in a loop to continuously monitor and manage the piping system for freeze protection. During each loop, the processor reevaluates the current sensor data and system status, making appropriate control decisions based on pre-set conditions and logic, and executing appropriate actions to ensure the piping system remains freeze-protected.

[0081] Although the present invention is disclosed as above, the scope of protection disclosed by the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A pipeline antifreeze system, installed on a pipeline (5), characterized in that: include: A first control assembly (1) is installed on one side of the pipeline (5), the first control assembly (1) comprising a first temperature sensor (12), a first solenoid valve (13), a first water flow sensor (14), a first pressure sensor (15), a first pressure relief valve (16), and a first water / air compressor (11) connected between the first solenoid valve (13) and the first water flow sensor (14) via a branch pipeline. A second control assembly (3) is installed on the other side of the pipeline (5), and the second control assembly (3) includes a second pressure relief valve (32), a second water flow sensor (33), a second solenoid valve (34), a second temperature sensor (35), a second pressure sensor (36) which are sequentially connected along the water flow direction, and a second water / air compressor (31) which is connected between the second solenoid valve (34) and the second temperature sensor (35) through a branch pipeline.

2. The pipeline antifreeze system according to claim 1, characterized in that: Also includes: A controller (6) electrically connected to the first control component (1) and the second control component (3); The alarm (7) is electrically connected to the first pressure sensor (15), the second pressure sensor (36) and the controller (6), respectively.

3. The pipeline antifreeze system according to claim 1, characterized in that: Also includes: a first manual service valve (2) connected between the first end (51) of the pipeline (5) and the first control assembly (1); A second manual inspection valve (4) is connected between the second end (52) of the pipeline (5) and the second control assembly (3).

4. The pipeline antifreeze system according to claim 1, characterized in that: The inner diameters of the pipes (5) are equal, or the inner diameters of the ends of the pipes (5) are smaller than the inner diameter of the middle section.

5. A pipeline antifreeze control method, characterized in that: Applicable to the pipeline antifreeze system according to any one of claims 1 to 4, the pipeline antifreeze control method comprises: When it is detected that the water temperature in any one of the first control component (1) and the second control component (3) is lower than the set temperature t0 and the flow rate in the first control component (1) and the second control component (3) is lower than the set flow rate υ0, the pipeline antifreeze system starts to work.

6. The pipeline antifreeze control method according to claim 5, characterized in that: The pipeline antifreeze control method specifically comprises the following steps: Step S1: The pipeline antifreeze system automatically closes the first solenoid valve (13) and the second solenoid valve (34) in the first control component (1) and the second control component (3); Step S2: The first water / gas compressor (11) compresses the liquid. After the water pressure conduction time Δt1, the liquid area in the second water / gas compressor (31) expands, generating a water flow from the first end (51) to the second end (52) on the pipeline (5); Step S3: The second water / gas compressor (31) compresses the liquid. After the water pressure conduction time Δt2, the liquid area in the first water / gas compressor (11) expands, generating a water flow from the second end (52) to the first end (51) on the pipeline (5); Step S4: Repeat step S2 and step S3 alternately; Step S5: When the second pressure sensor (36) detects that the pressure drop is greater than ΔP or the water temperatures measured by the first temperature sensor (12) and the second temperature sensor (35) are both higher than t1, the first water / gas compressor (11) and the second water / gas compressor (31) stop running, and the first solenoid valve (13) and the second solenoid valve (34) are opened.

7. The pipeline antifreeze control method according to claim 5, characterized in that: Also includes: When the pressure on the pipeline (5) is greater than the set pressure relief pressure P on the first pressure relief valve (16) and the second pressure relief valve (32), n When the pressure is released, the first pressure relief valve (16) and the second pressure relief valve (32) automatically open to relieve pressure.

8. The pipeline antifreeze control method according to claim 6, characterized in that: Also includes: When the first pressure sensor (15) is greater than the maximum allowable pressure of the system P x When the first water / gas compressor (11) and the second water / gas compressor (31) stop running, a fault alarm is issued through the alarm device (7).

9. The pipeline antifreeze control method according to claim 8, characterized in that: The maximum allowable pressure of the system P x Greater than the set relief pressure P n .

10. A computer storage medium storing a computer program, wherein: When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 9 are implemented.

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