Device and method for preventing water conveying pipeline from freezing

Abstract

According to the device and method for preventing the water conveying pipeline from freezing, a mounting frame is arranged in the water conveying pipeline, a driving motor coaxial with the water conveying pipeline is mounted on the mounting frame, a paddle assembly is arranged on the driving motor, and when the interior of the water conveying pipeline may be frozen due to the air temperature, the driving motor drives the paddle assembly to rotate; therefore, water spirally flows in the water conveying pipeline, water at different temperatures is mixed, and freezing caused by continuous reduction of the temperature of water close to the wall surface of the water conveying pipeline is prevented. After the water flow is stable, water which is influenced by centrifugal force, has higher density and is above the freezing point temperature is in contact with the wall surface of the water conveying pipeline, exchanges heat with the outside of the water conveying pipeline, and returns to the center of the water conveying pipeline after the temperature is reduced. Moreover, the water spirally flows in the water conveying pipeline, so that the water flow speed can be increased, the growth of ice crystals is inhibited, more friction heat can be generated, the water temperature is increased to a certain extent, and the purpose of preventing the water conveying pipeline from being frozen is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-freezing of water pipelines, and specifically, to a device and method for preventing water pipelines from freezing. Background Art

[0002] In cold winters, especially in high-latitude regions or mountainous areas, a sudden drop in temperature often poses severe challenges to various infrastructures, and the problem of water pipeline icing is particularly prominent. As an important part of urban water supply systems and farmland irrigation systems, the stable operation of water pipelines is directly related to the convenience of residents' daily lives, the continuity of agricultural production, and the economic stability of the entire society. Given the serious consequences brought about by water pipeline icing, it is particularly urgent to take effective measures to prevent pipeline icing. Summary of the Invention

[0003] The present invention provides a device and method for preventing water pipelines from freezing, which makes improvements to solve the problem that water pipelines are prone to icing and blockage in cold environments in the prior art, and can prevent water pipelines from freezing.

[0004] To achieve the above object, in a first aspect, the present invention provides a device for preventing water pipelines from freezing, comprising:

[0005] A mounting frame that abuts against the inner wall of the water pipeline;

[0006] A driving motor that is mounted on the mounting frame and is coaxially arranged with the water pipeline;

[0007] A blade assembly that includes a blade base and blades. The blade base is connected to the driving motor and is arranged on the side of the driving motor facing the water outlet end of the water pipeline. The root of the blade is rotatably connected to the blade base, and the axis direction of the blade forms an acute angle or a right angle with the axial direction of the driving motor;

[0008] A control terminal that is electrically connected to the driving motor;

[0009] A sensor group, the sensor group is signal-connected to the control terminal; the sensor group includes a temperature sensor and a flow sensor, the temperature sensor is arranged outside the water conveyance pipeline; the flow sensor is arranged inside the water conveyance pipeline. When the air temperature may cause the water in the water conveyance pipeline to freeze, the drive motor drives the blade assembly to rotate, so that the water flows in a spiral shape in the water conveyance pipeline, mixing the water with a lower temperature near the pipe wall of the water conveyance pipe and the water with a higher temperature near the center of the water conveyance pipe, preventing the water temperature near the pipe wall of the water conveyance pipe from continuing to decrease and causing freezing. After the water flow is relatively stable, affected by the centrifugal force, the water with a greater density and above the freezing point temperature contacts the wall of the water conveyance pipeline, exchanges heat with the outside of the water conveyance pipeline, and returns to the center of the water conveyance pipeline after the temperature drops. On the other hand, the spiral flow of the water in the water conveyance pipeline can increase the water flow velocity, thereby inhibiting the growth of ice crystals. In addition, it is beneficial to generate more frictional heat and increase the water temperature to a certain extent, so as to achieve the purpose of preventing the water conveyance pipeline from freezing.

[0010] As an alternative technical solution, it further includes a covering layer, the covering layer includes a heat insulation layer, a reflective layer and a heating layer, the heating layer is wrapped around the outer periphery of the water conveyance pipeline, the heat insulation layer is wrapped around the outer periphery of the heating layer, and the control terminal is electrically connected to the heating layer; the reflective layer is arranged between the heating layer and the heat insulation layer. When the air temperature further decreases, causing the drive motor and the blade assembly to be insufficient to prevent freezing, the control terminal can control the heating layer to heat the water conveyance pipeline, increase the water temperature inside the water conveyance pipeline, and thus reduce the possibility of freezing inside the water conveyance pipeline.

[0011] As an alternative technical solution, the covering layer further includes a heat storage layer, the heat storage layer is arranged between the heat insulation layer and the heating layer, or between the heating layer and the water conveyance pipeline. The heat storage layer can absorb heat when the air temperature is higher than the freezing temperature and when the heating layer releases heat, and release heat when the air temperature decreases and the heating layer stops heating, so as to increase the water temperature inside the water conveyance pipeline, reduce the possibility of freezing inside the water conveyance pipeline, and is beneficial to reducing the operation time of the heating layer, thereby reducing energy consumption and the operation cost of the device for preventing the water conveyance pipeline from freezing.

[0012] As an alternative technical solution, mounting holes are provided on the outer wall of the water conveyance pipeline; the device for preventing the water conveyance pipeline from freezing further includes heat conduction columns, which are inserted through the mounting holes and extend from the outside of the water conveyance pipeline to the inside of the water conveyance pipeline, and the heating layer is connected to the heat conduction columns. When the water flow in the water conveyance pipeline flows through the heat conduction columns, affected by the heat conduction columns, a turbulent flow will be formed, further destroying the ice crystal formation conditions and inhibiting the growth of ice crystals. At the same time, the turbulent flow of the water is also beneficial to improving the heat exchange efficiency. When the heating layer releases heat, after the heat is conducted to the heat conduction columns, the temperature of the water flow will be increased more quickly, so as to achieve the effect of preventing freezing. In addition, under relatively extreme conditions, when the paddle assembly and the covering layer cannot prevent the water in the water conveyance pipeline from freezing, ice crystals will start to form on the inner wall surface of the water conveyance pipeline and gradually develop into a ring-shaped ice layer coaxial with the water conveyance pipeline. At the same time, the volume expands. Due to the limitation of the inner wall of the water conveyance pipeline, the ring-shaped ice layer will be extruded radially along the water conveyance pipeline and the inner wall of the water conveyance pipeline. Due to the influence of the heat conduction columns, there will be holes around the heat conduction columns on the ring-shaped ice layer, and these holes will cause stress concentration at this place on the ring-shaped ice layer, making the ring-shaped ice layer more likely to break during the growth and expansion process, thereby reducing the expansion force on the water conveyance pipeline, or even directly falling off from the inner wall of the water conveyance pipeline, and further reducing the risk of the water conveyance pipeline being burst by the ring-shaped ice layer.

[0013] As an alternative technical solution, a flange is provided at one end of the mounting hole facing the outside of the water conveyance pipeline;

[0014] The heat conduction column includes a heat conduction part and a sealing part. The heat conduction part is matched with the mounting hole; the sealing part is connected to the heat conduction column. A sealing groove is provided on one side of the sealing part facing the part where the heat conduction part is matched with the mounting hole, and the sealing groove is matched with the flange. The diameter of the mating ring surface of the sealing groove and the flange is greater than 3 / 4 of the wall thickness of the sealing part along the radial direction of the mounting hole. When the heating layer does not release heat, the temperature of the heat conduction column is mainly affected by the temperature of the water flow in the water conveyance pipeline. At this time, the sealing part and the flange form a relatively tight fit, so as to seal the mounting hole; when the heating layer releases heat, the temperature of the heat conduction column rises. At this time, for the sealing part, the outward expansion of the sealing groove wall material dominates, the diameter of the mating ring surface of the sealing groove and the flange increases, and the tightness of the fit between the sealing part and the flange decreases. At the same time, the diameter of the heat conduction part increases due to the increase in the temperature of the heat conduction column, and the tightness of the fit with the mounting hole increases, so as to achieve the sealing of the mounting hole.

[0015] As an alternative technical solution, a drainage channel is provided on the heat conduction column, and the drainage channel communicates one end of the heat conduction column located inside the water conveyance pipeline with the other end located outside the water conveyance pipeline; a sealing plug is detachably provided at the end of the drainage channel located outside the water conveyance pipeline. In the event of an extreme situation where the device for preventing ice formation in the water conveyance pipeline fails to achieve the purpose of preventing ice formation and the water conveyance pipeline is completely blocked by ice, the heat conduction column can be heated by the heating layer to partially melt the ice layer, and the water in the water conveyance pipeline can be partially discharged through the drainage channel, leaving a cavity near the heat conduction column. At this time, low-pressure steam, hot brine, etc. can be injected into the cavity through the drainage channel to increase the area of simultaneous ice melting and obtain a means of melting ice from the middle and inside of the ice layer, thereby accelerating the ice melting speed, promoting the splitting of large ice blocks, shortening the time for dredging the water conveyance pipeline, and reducing losses. Further, when the cavities near two adjacent heat conduction columns are connected, one of the drainage channels located in different heat conduction columns serves as the injection end and the other serves as the discharge end, so that low-pressure steam or hot brine can be continuously injected into the cavity and form a cycle, which is beneficial to further accelerating the ice melting speed.

[0016] As an alternative technical solution, it further includes a first coil, which is arranged outside the water conveyance pipeline and corresponding to the blade, and the first coil is signal-connected to the control terminal; the blade includes a magnetic part, and the magnetic part is used to make the blade rotate relative to the blade base under the action of the first coil. The first coil can control the opening angle of the blade according to the water flow velocity in the water conveyance pipeline and the rotation speed of the drive motor, so as to balance the reduction of the water flow resistance in the water conveyance pipeline and the increase in the ability to drive the water flow in the anti-icing device of the present invention.

[0017] In a second aspect, the present invention also discloses a method for preventing ice formation in a water conveyance pipeline, which is applied to the anti-icing device in any of the above technical solutions, and includes:

[0018] The control terminal obtains temperature data through the sensor group and the first flow rate data in the water conveyance pipeline under the temperature data, and judges the ice formation risk;

[0019] The control terminal controls the rotation of the blade assembly;

[0020] The control terminal obtains the second flow rate data in the water conveyance pipeline after the rotation of the blade assembly through the flow sensor, and adjusts the rotation speed of the blade assembly according to the second flow rate data.

[0021] As an alternative technical solution, the device for preventing freezing of water conveyance pipelines further includes a covering layer, which includes a heat insulation layer and a heating layer. The heating layer is wrapped around the outer periphery of the water conveyance pipeline, and the heat insulation layer is wrapped around the outer periphery of the heating layer. The control terminal is electrically connected to the heating layer;

[0022] The method for preventing freezing of water conveyance pipelines further includes:

[0023] According to the temperature data and the first flow rate data, the control terminal predicts the freezing risk and classifies the freezing risk into a first-level risk, a second-level risk, and a third-level risk;

[0024] The control terminal obtains the classification of the freezing risk. In the case of the first-level risk, passive anti-freezing is only relied on the covering layer; in the case of the second-level risk, the heating layer is started at a power 50% lower than the rated power, and the paddle blade assembly rotates intermittently; in the case of the third-level risk, the heating layer is started at a power higher than or equal to 50%, and the paddle blade assembly rotates continuously. This technical solution forms a hierarchical response strategy based on environmental data, which is beneficial to reducing energy consumption.

[0025] As an alternative technical solution, it further includes:

[0026] The control terminal obtains the temperature prediction data of the weather station and pre-judges the freezing risk;

[0027] The heating layer is started to pre-heat the water conveyance pipeline.

[0028] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0029] For the device and method for preventing freezing of water conveyance pipelines of the present invention, by arranging a mounting frame inside the water conveyance pipeline, a driving motor coaxially arranged with the water conveyance pipeline is installed on the mounting frame, and a paddle blade assembly is arranged on the driving motor. When the temperature may cause the water inside the water conveyance pipeline to freeze, the driving motor drives the paddle blade assembly to rotate, so that the water flows in a spiral shape in the water conveyance pipeline, mixing water at different temperatures, and preventing the temperature of the water near the pipe wall of the water conveyance pipeline from continuing to decrease and causing freezing. After the water flow is relatively stable, affected by the centrifugal force, the water with a greater density and above the freezing point temperature contacts the pipe wall of the water conveyance pipeline, exchanges heat with the outside of the water conveyance pipeline, and then returns to the center of the water conveyance pipeline after the temperature drops. Moreover, the water flowing in a spiral shape in the water conveyance pipeline can increase the water flow rate, thereby inhibiting the growth of ice crystals. In addition, it is beneficial to generate more frictional heat and increase the water temperature to a certain extent, so as to achieve the purpose of preventing the water conveyance pipeline from freezing. Description of the Drawings

[0030] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of the present invention, and do not limit the embodiments of the present invention;

[0031] Figure 1 It is a schematic diagram of the open state of the blades of the device for preventing the water conveyance pipeline from freezing in an embodiment of the present invention;

[0032] Figure 2 is Figure 1 a schematic diagram of the retracted state of the blades of the device for preventing the water conveyance pipeline from freezing in;

[0033] Figure 3 In another embodiment of the present invention, it is a schematic diagram of the device for preventing the water conveyance pipeline from freezing;

[0034] Figure 4 is Figure 3 a partial enlarged view of the l area in;

[0035] Figure 5 It is a flowchart of the method for preventing the water conveyance pipeline from freezing in an embodiment of the present invention.

[0036] Description of the reference numerals:

[0037] Water conveyance pipeline - 100; Flange - 101;

[0038] Mounting frame - 1; Driving motor - 2; Blade assembly - 3; Blade - 31; Blade base - 32; First coil - 4; Control terminal - 5;

[0039] Coating layer - 6; Heat insulation layer - 61; Reflective layer - 62; Heating layer - 63; Heat storage layer - 64;

[0040] Thermal conduction column - 7; Sealing part - 71; Thermal conduction part - 72; Drainage channel - 73; Sealing plug - 74. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the present invention, terms such as "inner" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0043] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the terms "install", "set", "provided with", "connect", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components, or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components, or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0046] Embodiment 1

[0047] This embodiment provides an anti-icing device for a water conveyance pipeline, which includes a mounting frame 1, a driving motor 2, a blade assembly 3, a control terminal 5, and a sensor group. The mounting frame 1 abuts against the inner wall of the water conveyance pipeline 100. The driving motor 2 is installed on the mounting frame 1 and is coaxially arranged with the water conveyance pipeline 100. The blade assembly 3 includes a blade base 32 and blades 31. The blade base 32 is connected to the driving motor 2 and is arranged on the side of the driving motor 2 facing the water outlet end of the water conveyance pipeline 100. The root of the blade 31 is rotatably connected to the blade base 32 and the axis direction forms an acute angle or a right angle with the axis of the driving motor 2. The control terminal 5 is electrically connected to the driving motor 2. The sensor group is signal-connected to the control terminal 5; the sensor group includes a temperature sensor and a flow sensor. The temperature sensor is arranged outside the water conveyance pipeline 100; the flow sensor is arranged inside the water conveyance pipeline 100.

[0048] When the temperature may cause the water in the water conveyance pipeline 100 to freeze, the driving motor 2 drives the blade assembly 3 to rotate, so that the water flows in a spiral shape in the water conveyance pipeline 100, mixing the water near the wall surface of the water conveyance pipeline 100 with a lower temperature and the water near the center of the water conveyance pipeline 100 with a higher temperature, preventing the water near the wall surface of the water conveyance pipeline 100 from continuing to cool down and freeze. After the water flow becomes relatively stable, affected by the centrifugal force, the denser water above the freezing point contacts the wall surface of the water conveyance pipeline 100 and exchanges heat with the outside of the water conveyance pipeline 100, and then returns to the center of the water conveyance pipeline 100 after the temperature drops. On the other hand, the spiral flow of water in the water conveyance pipeline 100 can increase the water flow velocity, thereby inhibiting the growth of ice crystals. In addition, it is beneficial to generate more frictional heat and increase the water temperature to a certain extent, so as to achieve the purpose of preventing the water conveyance pipeline from freezing.

[0049] Embodiment 2

[0050] On the basis of Embodiment 1, it further includes a covering layer 6. The covering layer 6 includes a heat insulation layer 61, a reflective layer 62 and a heating layer 63. The heating layer 63 is wrapped around the outer periphery of the water conveyance pipeline 100, the heat insulation layer 61 is wrapped around the outer periphery of the heating layer 63, and the control terminal 5 is electrically connected to the heating layer 63; the reflective layer 62 is arranged between the heating layer 63 and the heat insulation layer 61. When the temperature drops further and the driving motor 2 and the blade assembly 3 are insufficient to prevent freezing, the control terminal 5 can control the heating layer 63 to heat the water conveyance pipeline 100, increase the water temperature in the water conveyance pipeline 100, and thus reduce the possibility of freezing in the water conveyance pipeline 100.

[0051] As an optional technical solution, the covering layer 6 further includes a heat storage layer 64. The heat storage layer 64 is arranged between the heat insulation layer 61 and the heating layer 63, or between the heating layer 63 and the water conveyance pipeline 100. The heat storage layer 64 can absorb heat when the temperature is higher than the freezing temperature and when the heating layer 63 releases heat, and release heat when the temperature drops and the heating layer 63 stops heating, so as to increase the water temperature in the water conveyance pipeline 100 and reduce the possibility of freezing in the water conveyance pipeline 100, which is beneficial to reducing the operation time of the heating layer 63, thereby reducing energy consumption and the operation cost of the device for preventing the water conveyance pipeline from freezing.

[0052] Preferably, the heat storage method of the heat storage layer 64 is phase change heat storage.

[0053] As an alternative technical solution, the outer wall of the water conveyance pipeline 100 is provided with mounting holes; the device for preventing the water conveyance pipeline from freezing further includes heat conduction columns 7, which are inserted through the mounting holes and extend from the outside of the water conveyance pipeline 100 to the inside of the water conveyance pipeline 100, and the heating layer 63 is connected to the heat conduction columns 7. When the water flow in the water conveyance pipeline 100 flows through the heat conduction columns 7, affected by the heat conduction columns 7, a turbulent flow will be formed, further destroying the ice crystal formation conditions and inhibiting the growth of ice crystals. At the same time, the turbulent flow of the water is also beneficial to improving the heat exchange efficiency between the water flow and the heat conduction columns 7. When the heating layer 63 releases heat, after the heat is conducted to the heat conduction columns 7, the temperature of the water flow will be increased more quickly, so as to achieve the effect of preventing freezing. In addition, under relatively extreme conditions, when the paddle assembly 3 and the covering layer 6 cannot prevent the water conveyance pipeline 100 from freezing, ice crystals will start to form on the inner wall surface of the water conveyance pipeline 100 and gradually develop into a ring-shaped ice layer coaxial with the water conveyance pipeline 100, and at the same time, the volume expands. Due to the limitation of the inner wall of the water conveyance pipeline 100, the ring-shaped ice layer squeezes against the inner wall of the water conveyance pipeline 100 along the radial direction of the water conveyance pipeline 100. Due to the influence of the heat conduction columns 7, there will be holes around the heat conduction columns 7 on the ring-shaped ice layer. These holes will cause stress concentration at this place on the ring-shaped ice layer, making the ring-shaped ice layer more likely to break during the growth and expansion process, thereby reducing the expansion force on the water conveyance pipeline 100, or even directly falling off from the inner wall of the water conveyance pipeline 100, and further reducing the risk of the water conveyance pipeline 100 being burst by the ring-shaped ice layer.

[0054] Preferably, the number of the mounting holes and the heat conduction columns 7 is multiple. The multiple mounting holes are arranged at intervals on the outer wall of the water conveyance pipeline 100, and each mounting hole is provided with a heat conduction column 7.

[0055] Exemplarily, the material of the heat conduction columns 7 can be copper or other metal materials with excellent heat conduction performance.

[0056] As an alternative technical solution, a flange 101 is provided at one end of the mounting hole facing the outside of the water delivery pipe 100. The heat conducting column 7 includes a heat conducting portion 72 and a sealing portion 71. The heat conducting portion 72 is fitted with the mounting hole; the sealing portion 71 is connected to the heat conducting column 7. A sealing groove is provided on one side of the sealing portion 71 facing the mating portion of the heat conducting portion 72 and the mounting hole. The sealing groove cooperates with the flange 101, and the diameter of the annular surface where the sealing groove cooperates with the flange 101 is greater than 3 / 4 of the wall thickness of the sealing portion 71 in the radial direction of the mounting hole. When the heating layer 63 does not release heat, the temperature of the heat conducting column 7 is mainly affected by the temperature of the water flow in the water delivery pipe 100, and the temperature of the heat conducting column 7 is at a relatively low level. At this time, the sealing portion 71 and the flange 101 form a relatively tight fit, thereby sealing the mounting hole; when the heating layer 63 releases heat, the temperature of the heat conducting column 7 rises. At this time, for the sealing portion 71, the outward expansion of the material of the sealing groove wall surface dominates, the diameter of the annular surface where the sealing groove cooperates with the flange 101 increases, and the tightness of the fit between the sealing portion 71 and the flange 101 decreases. At the same time, the diameter of the heat conducting portion 72 increases due to the rise in the temperature of the heat conducting column 7, and the tightness of the fit with the mounting hole increases, thereby achieving the sealing of the mounting hole.

[0057] Exemplarily, at 25°C, the fit between the sealing groove and the flange 101 can be a thread fit, a transition fit, or an interference fit with an interference amount less than 0.05 mm; the fit between the heat conducting portion 72 and the mounting hole can be a transition fit or a clearance fit with a clearance value less than 0.05 mm.

[0058] As an alternative technical solution, a drainage channel 73 is provided on the heat conducting column 7. The drainage channel 73 connects one end of the heat conducting column 7 located inside the water delivery pipe 100 to the end located outside the water delivery pipe 100; a sealing plug 74 is detachably provided at the end of the drainage channel 73 located outside the water delivery pipe 100. In the event of an extreme situation where the ice prevention device for the water delivery pipe fails to achieve the purpose of preventing ice formation and the water delivery pipe 100 is completely blocked by ice, the heat conducting column 7 can be heated by the heating layer 63 to partially melt the ice layer. The ice layer is partially discharged through the drainage channel 73, leaving a cavity near the heat conducting column 7. At this time, low-pressure steam, hot brine, etc. can be injected into the cavity through the drainage channel 73 to increase the area of simultaneous ice melting and obtain a means of melting ice starting from the middle and inside of the ice layer, thereby accelerating the ice melting speed, promoting the splitting of large ice blocks, shortening the time for dredging the water delivery pipe 100, and reducing losses. Further, when the cavities near two adjacent heat conducting columns 7 are connected, one of the drainage channels 73 of different heat conducting columns 7 serves as the injection end and the other serves as the discharge end, so that low-pressure steam or hot brine can be continuously injected into the cavity and form a cycle, which is beneficial to further accelerating the ice melting speed.

[0059] Optionally, at least two rows of water channels 73 are provided on the same heat conducting column 7. After the ice layer partially melts and leaves a cavity, one of the two rows of water channels 73 on the same heat conducting column 7 can be used as the injection end and the other as the discharge end, so that low-pressure steam or hot brine can be continuously injected into the cavity around the single heat conducting column 7 to form a cycle, which is beneficial to further accelerating the ice melting speed.

[0060] As an alternative technical solution, it further includes a first coil 4. The first coil 4 is arranged outside the water conveyance pipeline 100 and corresponding to the blade 31, and the first coil 4 is signal-connected to the control terminal 5; the blade 31 includes a magnetic part, and the magnetic part is used to make the blade 31 rotate relative to the blade base 32 under the action of the first coil 4. The first coil 4 can control the opening angle of the blade 31 according to the water flow velocity in the water conveyance pipeline 100 and the rotation speed of the driving motor 2, so as to balance the reduction of the water flow resistance in the water conveyance pipeline 100 and the increase of the ability to drive the water flow in the anti-icing device of the water conveyance pipeline of the present invention.

[0061] Optionally, it further includes a second coil. The second coil can be integrated into the first coil 4. The second coil continuously releases "ultra-fine vibration waves", that is, electromagnetic energy waves, and propagates downstream along the direction of the water flow. Water is used as the medium for transmitting and storing this vibration wave, so that the water in every corner of the pipe network can carry the vibration wave energy. At the moment of acting on the pipeline, it is continuously and constantly released and transmitted into the water through the pipe wall, so as to realize the functions of scale removal and prevention, corrosion prevention, and sterilization and algaecide.

[0062] Embodiment III

[0063] This embodiment also discloses a method for preventing ice formation in a water conveyance pipeline, which is applied to the anti-icing device for a water conveyance pipeline in Embodiment I or Embodiment II, and includes:

[0064] S10: The control terminal 5 obtains the air temperature data through the sensor group, as well as the first flow rate data in the water conveyance pipeline 100 under the air temperature data, and judges the ice formation risk;

[0065] S20: The control terminal 5 controls the rotation of the blade assembly 3;

[0066] S30: The control terminal obtains the second flow rate data in the water conveyance pipeline 100 after the rotation of the blade assembly 3 through the flow sensor, and adjusts the rotation speed of the blade assembly 3 according to the second flow rate data.

[0067] As an alternative technical solution, the anti-icing device for a water conveyance pipeline further includes a covering layer 6. The covering layer 6 includes a heat insulation layer 61 and a heating layer 63. The heating layer 63 is wrapped around the outer periphery of the water conveyance pipeline 100, and the heat insulation layer 61 is wrapped around the outer periphery of the heating layer 63. The control terminal 5 is electrically connected to the heating layer 63;

[0068] The method for preventing ice formation in a water conveyance pipeline further includes:

[0069] S11: According to the temperature data and the first flow rate data, the control terminal 5 predicts the icing risk and classifies the icing risk into a first-level risk, a second-level risk, and a third-level risk;

[0070] Exemplarily, the judgment criterion for the first-level risk can be: the temperature is higher than 0°C; the judgment criterion for the second-level risk is: the temperature is higher than -5°C and lower than or equal to 0°C, and the first flow rate data drops by less than 10% compared to 25°C; the judgment criterion for the third-level risk is: the temperature is lower than or equal to -5°C, and the first flow rate data drops by less than 20% compared to 25°C. In practice, the judgment criteria for the first-level risk, the second-level risk, and the third-level risk should be set according to specific requirements, and this embodiment does not limit it here.

[0071] S21: The control terminal 5 obtains the icing risk classification. In the case of the first-level risk, only rely on the covering layer 6 for passive anti-freezing; in the case of the second-level risk, the heating layer 63 starts with a power 50% lower than the rated power, and the blade assembly 3 rotates intermittently; in the case of the third-level risk, the heating layer 63 starts with a power higher than or equal to 50%, and the blade assembly 3 rotates continuously. This technical solution forms a hierarchical response strategy based on environmental data, which is beneficial to reducing energy consumption.

[0072] As an alternative technical solution, it further includes:

[0073] S40: The control terminal 5 obtains the temperature prediction data of the weather station and pre-judges the icing risk;

[0074] S50: The heating layer 63 starts to pre-heat the water delivery pipeline 100.

[0075] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. An anti-icing device for a water conveyance pipeline, comprising a water conveyance pipeline, characterized in that, It further includes: A mounting bracket which abuts against the inner wall of the water conveyance pipeline; A driving motor which is mounted on the mounting bracket and is coaxially arranged with the water conveyance pipeline; A blade assembly which includes a blade base and blades. The blade base is connected to the driving motor and is arranged on the side of the driving motor facing the water outlet end of the water conveyance pipeline. The root of the blade is rotatably connected to the blade base and the axis direction of the rotation shaft forms an acute angle or a right angle with the axial direction of the driving motor; A control terminal which is electrically connected to the driving motor; A sensor group which is signal-connected to the control terminal; the sensor group includes a temperature sensor and a flow sensor. The temperature sensor is arranged on the outer side of the water conveyance pipeline; the flow sensor is arranged inside the water conveyance pipeline.

2. The anti-icing device for a water conveyance pipeline according to claim 1, wherein, It further includes a covering layer which includes a heat insulation layer, a reflection layer and a heating layer. The heating layer is wrapped around the outer periphery of the water conveyance pipeline, the heat insulation layer is wrapped around the outer periphery of the heating layer, and the control terminal is electrically connected to the heating layer; the reflection layer is arranged between the heating layer and the heat insulation layer.

3. The anti-icing device for a water conveyance pipeline according to claim 2, wherein, The covering layer further includes a heat storage layer which is arranged between the reflection layer and the heating layer, or between the heating layer and the water conveyance pipeline.

4. A device for preventing water pipelines from freezing according to claim 2, characterized in that, An installation hole is formed in the outer wall of the water conveyance pipeline; the device for preventing the water conveyance pipeline from freezing further includes a heat conduction column which penetrates through the installation hole and extends from the outer side of the water conveyance pipeline to the inside of the water conveyance pipeline, and the heating layer is connected to the heat conduction column.

5. The anti-icing device for a water conveyance pipeline according to claim 4, wherein, A flange is provided at one end of the installation hole facing the outer side of the water conveyance pipeline; The heat conduction column includes a heat conduction part and a sealing part. The heat conduction part is matched with the installation hole; the sealing part is connected to the heat conduction column. A sealing groove is provided on one side of the sealing part facing the matching part of the heat conduction part and the installation hole, and the sealing groove is matched with the flange. The diameter of the ring surface where the sealing groove is matched with the flange is greater than 3 / 4 of the wall thickness of the sealing part along the radial direction of the installation hole.

6. The anti-icing device for a water conveyance pipeline according to claim 5, characterized in that, A drainage channel is provided on the heat conduction column, and the drainage channel communicates the end of the heat conduction column inside the water conveyance pipeline with the end outside the water conveyance pipeline; a sealing plug is detachably provided at the end of the drainage channel located outside the water conveyance pipeline.

7. The anti-icing device for a water conveyance pipeline according to claim 1, characterized in that, It further includes a first coil which is arranged on the outer side of the water conveyance pipeline and corresponds to the blades, and the first coil is signal-connected to the control terminal; the blade includes a magnetic part which is used to make the blade rotate relative to the blade base under the action of the first coil.

8. A method for preventing water pipelines from freezing, characterized in that, Applied to the device for preventing the water conveyance pipeline from freezing according to any one of claims 1-7, it includes: The control terminal obtains the air temperature data through the sensor group and the first flow data in the water conveyance pipeline under the air temperature data, and judges the freezing risk; The control terminal controls the blade assembly to rotate; The control terminal obtains the second flow data in the water conveyance pipeline after the blade assembly rotates through the flow sensor, and adjusts the rotation speed of the blade assembly according to the second flow data.

9. The method for preventing water pipelines from freezing according to claim 8, characterized in that, The device for preventing the water conveyance pipeline from freezing further includes a covering layer, which includes a heat insulation layer and a heating layer. The heating layer is wrapped around the outer periphery of the water conveyance pipeline, and the heat insulation layer is wrapped around the outer periphery of the heating layer. The control terminal is electrically connected to the heating layer; The method for preventing the water conveyance pipeline from freezing further includes: According to the temperature data and the first flow rate data, the control terminal predicts the freezing risk and classifies the freezing risk into a first-level risk, a second-level risk, and a third-level risk; The control terminal obtains the classification of the freezing risk. In the case of the first-level risk, passive anti-freezing is carried out only relying on the covering layer; in the case of the second-level risk, the heating layer is started with a power 50% lower than the rated power, and the blade assembly rotates intermittently; in the case of the third-level risk, the heating layer is started with a power higher than or equal to 50%, and the blade assembly rotates continuously.

10. A method for preventing water pipelines from freezing according to claim 9, characterized in that, It further includes: The control terminal obtains the predicted temperature data of the weather station and pre-judges the freezing risk; The heating layer is started to pre-heat the water conveyance pipeline.

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