Anti-freezing system for water delivery open channel

Abstract

The utility model discloses a water delivery open channel anti-freezing system which is characterized by comprising a turbulent flow control device and a temperature detection module which are installed in a water channel, the turbulent flow control device comprises an impeller which is arranged in the upstream flowing direction, the lower end of the impeller is immersed below the water surface, and a rotating shaft of the impeller is connected with a main shaft through a belt mechanism. The main shaft is connected with a turbulence control motor, the temperature detection module is connected with the control center, and the control center is connected with the turbulence control motor. Water flow energy can be collected when the water temperature is high, turbulent fluctuation is generated when the water temperature is low, freezing prevention is achieved, water conveying efficiency reduction caused by water freezing is avoided, and water flow conveying stability and reliability of a water conveying open channel can be better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water delivery channels, in particular to an open water delivery channel antifreeze system. Background Art

[0002] An open channel is a water channel with a free water surface (all points on the water surface are affected by atmospheric pressure). According to its formation, it can be generally divided into natural open channels and artificial open channels. In my country's South-to-North Water Diversion Project, a large number of open channels were built for water transportation.

[0003] The South-to-North Water Diversion Project is mainly aimed at solving the problem of water shortage in northern my country, especially in the Huanghuaihai Basin. The project is divided into three routes: east, middle and west. It is expected to divert billions of cubic meters of water annually. The project passes through multiple provinces from south to north, involving hundreds of millions of people in the planning area. Due to the long transportation route of the South-to-North Water Diversion Project, some areas along the water diversion channel will have a large temperature difference between day and night. The temperature can reach more than 20 degrees during the day, but the temperature often drops below zero at night, causing the water in the channel to freeze, affecting water transportation.

[0004] Therefore, it is necessary for those skilled in the art to design a technology that can better prevent freezing of open water channels, so as to better ensure the smooth implementation of water delivery projects. Utility Model Content

[0005] In view of the above-mentioned deficiencies, the technical problem to be solved by the present invention is: how to provide an open channel antifreeze system for water delivery that can effectively achieve water body antifreeze and ensure water delivery efficiency.

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

[0007] A water supply open channel antifreeze system is characterized in that it includes a turbulence control device and a temperature detection module installed in the water channel, the turbulence control device includes an impeller arranged along the upstream flow direction and with the lower end immersed below the water surface, the rotating shaft of the impeller is connected to a main shaft through a belt mechanism, the main shaft is connected to a turbulence control motor, the temperature detection module is connected to a control center, and the control center is connected to the turbulence control motor.

[0008] In this way, when the temperature detection module detects that the water temperature is lower than the set temperature (freezing temperature), the control center controls the turbulence control motor to drive the impeller to rotate, thereby creating turbulence, which can effectively prevent the water surface from freezing.

[0009] Furthermore, the belt mechanism is connected to the middle position of the main shaft, one end of the main shaft is connected to the turbulence motor through the first clutch, the other end of the main shaft is connected to a generator through the second clutch, the engine output end is connected to a battery, and the battery is connected to the turbulence motor.

[0010] In this way, the two clutches can be switched. When the water flow temperature in the canal is higher than the freezing temperature during the day, the generator is controlled to be turned on and the turbulence control motor is controlled to be turned off. At this time, the water flow drives the impeller to rotate and drives the generator to generate electricity. The electrical energy is stored in the battery. When the water flow temperature in the canal is lower than the freezing temperature at night, the generator is controlled to be turned off and the turbulence control motor is turned on to drive the impeller to rotate actively, create turbulence, and prevent the water from freezing. In this way, water energy can be collected and utilized when the water temperature is high without consuming additional energy, making the device more practical.

[0011] Furthermore, the first clutch and the second clutch are both electronically controlled clutches and are connected to the control center, so that automatic control can be easily achieved.

[0012] Furthermore, the main shaft, turbulence motor and generator are all installed above the impeller and fixed on a mounting frame, and the lower end of the mounting frame is fixed on the bank of the conveying open channel. In this way, the installation and fixing of the device are convenient.

[0013] Furthermore, the turbulence control device also includes an impeller float, which is floated on the water surface of the conveying open channel, and the rotating shaft of the impeller is rotatably mounted on the impeller float.

[0014] In this way, when the water level changes, the impeller can float up and down following the impeller float, ensuring that the draft depth of the impeller remains unchanged and ensuring the stability of its operation.

[0015] Furthermore, the belt mechanism includes a lower pulley installed on the rotating shaft of the impeller, an upper pulley on the main shaft located directly above the lower pulley, and an intermediate pulley located obliquely above the lower pulley. The lower pulley and the intermediate pulley are respectively installed at both ends of a lever, and the middle position of the lever is installed on a fulcrum rotating shaft through a slide groove. The fulcrum rotating shaft is fixed on the mounting frame, and the lower pulley, the intermediate pulley and the upper pulley are sleeved with belts to form a triangle.

[0016] In this way, when the impeller floats upward with the impeller float, the lever can be used to drive the intermediate pulley to move to the far end to ensure that the belt is in a tensioned state, so that the automatic floating adjustment of the impeller will not affect the stability of the device.

[0017] Furthermore, a positioning rod with a non-circular cross section is fixed upwardly on the impeller float, and a positioning sleeve with a matching cross-sectional shape is slidably mounted on the positioning rod. The positioning sleeve is relatively fixed to the bank of the water delivery open channel through a cross bar.

[0018] In this way, the impeller float can be positioned in the horizontal direction, thereby better ensuring the stability and reliability of the overall operation of the device.

[0019] Furthermore, a roller is arranged between the inner surface of the positioning sleeve and the positioning rod, so that the rolling friction can better realize the up-and-down sliding fit.

[0020] Furthermore, a plurality of openings are distributed on the blades of the impeller, and the edges of the openings are serrated. When the blades are located at the bottom, the upstream side of the openings is covered with an elastic baffle, one end of the elastic baffle is fixed on the side of the blade, and the other end is movably arranged.

[0021] In this way, when the impeller is subjected to hydraulic impact for power generation, the water flow impacts the elastic baffle to cover the opening, so that the blades are not affected by the force. When the impeller actively rotates to create turbulence, the blades actively rotate forward, so that the elastic baffle is flushed open by the water reaction force, revealing the serrated opening, which can better create turbulence and better prevent water from freezing.

[0022] Furthermore, the temperature detection module includes a detection shell floating on the water surface, a groove is provided on the upper surface of the detection shell, an elastic airbag is provided in the groove, a piston is horizontally provided above the elastic airbag, a piston rod is extended upward on the outer upper side of the piston, a brush head is horizontally provided on the upper end of the piston rod, the outer end of the brush head can be brushed up and down to cooperate with a vertically arranged conductive strip, one end of the conductive strip and one end of the brush head form a variable resistor and are connected to the temperature detection circuit, and the temperature detection circuit is connected to the control center; phase change gas is provided in the elastic airbag.

[0023] In this way, when the water flow temperature is lower than the freezing temperature, the phase change gas condenses from gas phase change to liquid, and the volume is reduced, driving the brush head to slide on the conductive strip, changing the resistance of the variable resistor, and then relying on the temperature detection circuit to detect the temperature. Further, the corresponding control operation of the turbulence control device is completed according to the temperature. Therefore, the temperature detection module has the advantages of being able to realize real-time temperature monitoring feedback, sensitive and reliable response, simple structure, and convenient implementation. In the specific implementation, the temperature detection circuit is the existing technology, that is, it can convert the resistance change of the variable resistor into an electrical signal, which is not described in detail here.

[0024] Furthermore, a first phase change gas and a second phase change gas are mixed in the elastic airbag, the phase change temperature of the first phase change gas is 0-5°C, and the phase change temperature of the second phase change gas is -10-0°C.

[0025] In this way, the control temperature of the turbulence control device can be adjusted within a temperature range by controlling the ratio of the two phase change gases, and the temperature can be adjusted as needed.

[0026] Furthermore, a positioning hole is vertically penetrated on the detection housing and can be slidably mounted on a positioning pile up and down, so that the positioning of the temperature detection module can be better achieved.

[0027] In summary, the utility model can collect water flow energy when the water temperature is high, and create turbulence to achieve anti-freezing when the water temperature is low, thereby avoiding the reduction of water delivery efficiency due to water freezing, and can better ensure the stability and reliability of water flow delivery in the open water channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0029] Figure 2 for Figure 1 An enlarged schematic diagram of the separate portion A in FIG.

[0030] Figure 3 for Figure 1 Side view of the individual belt unit sections. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with specific implementation methods.

[0032] Preferred implementation: A water delivery open channel antifreeze system is implemented, see Figure 1-Figure 3 , including a turbulence control device and a temperature detection module installed in the water channel, the turbulence control device includes an impeller 1 arranged along the upstream flow direction and with the lower end immersed below the water surface, the rotating shaft of the impeller 1 is connected to a main shaft 2 through a belt mechanism, the main shaft 2 is connected to a turbulence control motor 3, the temperature detection module is connected to a control center (not shown in the figure), and the control center is connected to the turbulence control motor 3.

[0033] In this way, when the temperature detection module detects that the water temperature is lower than the set temperature (freezing temperature), the control center controls the turbulence control motor to work, drives the impeller to rotate, and then creates turbulence, which can effectively prevent the water surface from freezing. Therefore, this device can monitor the water flow temperature, and when it is about to freeze, it relies on the motor to drive the impeller to rotate, forcibly creating a turbulent flow state in the water flow, increasing the hydraulic activity, better preventing the water body from freezing, and better ensuring the hydraulic transmission effect of the water channel.

[0034] Among them, the belt mechanism is connected to the middle position of the main shaft 2, one end of the main shaft 2 is connected to the turbulence motor 3 through the first clutch 4, the other end of the main shaft is connected to a generator 6 through the second clutch 5, the engine output end is connected to a battery (not shown in the figure), and the battery is connected to the turbulence motor.

[0035] In this way, the two clutches can be switched. When the water flow temperature in the canal is higher than the freezing temperature during the day, the generator is controlled to be turned on and the turbulence control motor is controlled to be turned off. At this time, the water flow drives the impeller to rotate and drives the generator to generate electricity. The electrical energy is stored in the battery. When the water flow temperature in the canal is lower than the freezing temperature at night, the generator is controlled to be turned off and the turbulence control motor is turned on to drive the impeller to rotate actively, create turbulence, and prevent the water from freezing. In this way, water energy can be collected and utilized when the water temperature is high without consuming additional energy, making the device more practical.

[0036] Wherein, the first clutch 4 and the second clutch 5 are both electronically controlled clutches and are connected to the control center, so as to facilitate automatic control.

[0037] The main shaft 2, the turbulence motor 3 and the generator 6 are all installed above the impeller 1 and fixed on a mounting frame 7, and the lower end of the mounting frame 7 is fixed on the bank of the conveying open channel. In this way, the installation and fixing of the device are convenient.

[0038] The turbulence control device further comprises an impeller float 8 , which is floated on the water surface of the conveying open channel, and the rotating shaft of the impeller 1 is rotatably mounted on the impeller float 8 .

[0039] In this way, when the water level changes, the impeller can float up and down following the impeller float, ensuring that the draft depth of the impeller remains unchanged and ensuring the stability of its operation.

[0040] Among them, the belt mechanism includes a lower pulley 9 installed on the rotating shaft of the impeller 1, an upper pulley 10 located on the main shaft 2 just above the lower pulley, and an intermediate pulley 11 located obliquely above the lower pulley. The lower pulley 9 and the intermediate pulley 11 are respectively installed at the two ends of a lever 12, and the middle position of the lever 12 is installed on a fulcrum shaft 13 through a slide groove. The fulcrum shaft 13 is fixed on the mounting frame 7, and the lower pulley 9, the intermediate pulley 11 and the upper pulley 10 are sleeved with a belt 14 to form a triangle.

[0041] In this way, when the impeller floats upward with the impeller float, the lever can be used to drive the intermediate pulley to move to the far end to ensure that the belt is in a tensioned state, so that the automatic floating adjustment of the impeller will not affect the stability of the device.

[0042] Among them, a positioning rod 15 with a non-circular cross section is fixed upwardly arranged on the impeller float 8, and a positioning sleeve 16 with a matching cross-sectional shape is slidably mounted on the positioning rod 15. The positioning sleeve 16 is relatively fixed to the bank of the water delivery open channel through a cross bar.

[0043] In this way, the impeller float can be positioned in the horizontal direction, thereby better ensuring the stability and reliability of the overall operation of the device.

[0044] Wherein, rollers are arranged between the inner surface of the positioning sleeve 16 and the positioning rod. In this way, rolling friction can better realize up and down sliding cooperation.

[0045] Among them, a plurality of openings 17 are distributed on the blades of the impeller 1, and the edges of the openings are serrated. When the blades are located at the bottom, the upstream side of the openings is covered with an elastic baffle 18, one end of which is fixed on the side of the blade and the other end is movably arranged.

[0046] In this way, when the impeller is subjected to hydraulic impact for power generation, the water flow impacts the elastic baffle to cover the opening, so that the blades are not affected by the force. When the impeller actively rotates to create turbulence, the blades actively rotate forward, so that the elastic baffle is flushed open by the water reaction force, revealing the serrated opening, which can better create turbulence and better prevent water from freezing.

[0047] The temperature detection module includes a detection shell 19 floating on the water surface, a groove is provided on the upper surface of the detection shell 19, an elastic airbag 20 is provided in the groove, a piston is horizontally provided above the elastic airbag, a piston rod 21 is extended upward from the outer upper part of the piston, a brush head 22 is horizontally provided at the upper end of the piston rod 21, the outer end of the brush head 22 can be brushed up and down to cooperate with a vertically arranged conductive strip 23, one end of the conductive strip 23 and one end of the brush head 22 form a variable resistor and are connected to the temperature detection circuit (not shown in the figure), and the temperature detection circuit is connected to the control center; phase change gas is provided in the elastic airbag 20.

[0048] In this way, when the water flow temperature is lower than the freezing temperature, the phase change gas condenses from gas phase change to liquid, and the volume is reduced, driving the brush head to slide on the conductive strip, changing the resistance of the variable resistor, and then relying on the temperature detection circuit to detect the temperature. Further, the corresponding control operation of the turbulence control device is completed according to the temperature. Therefore, the temperature detection module has the advantages of being able to realize real-time temperature monitoring feedback, sensitive and reliable response, simple structure, and convenient implementation. In the specific implementation, the temperature detection circuit is the existing technology, that is, it can convert the resistance change of the variable resistor into an electrical signal, which is not described in detail here.

[0049] The elastic airbag 20 contains a mixture of a first phase change gas and a second phase change gas. The phase change temperature of the first phase change gas is 0-5°C, and the phase change temperature of the second phase change gas is -10-0°C.

[0050] In this way, the control temperature of the turbulence control device can be adjusted within a temperature range by controlling the ratio of the two phase change gases, and the temperature can be adjusted as needed.

[0051] The detection housing 19 is vertically penetrated with a positioning hole and can be slidably mounted on a positioning post 24. In this way, the positioning of the temperature detection module can be better achieved.

Claims

1. A water delivery open channel antifreeze system, characterized in that: It includes a turbulence control device and a temperature detection module installed in a water channel. The turbulence control device includes an impeller arranged along the upstream flow direction and with the lower end immersed below the water surface. The rotating shaft of the impeller is connected to a main shaft through a belt mechanism, and the main shaft is connected to a turbulence control motor. The temperature detection module is connected to a control center, and the control center is connected to the turbulence control motor.

2. The open channel antifreeze system for water delivery according to claim 1, characterized in that: The belt mechanism is connected to the middle position of the main shaft, one end of the main shaft is connected to the turbulence motor through the first clutch, the other end of the main shaft is connected to a generator through the second clutch, the engine output end is connected to a battery, and the battery is connected to the turbulence motor.

3. The open channel antifreeze system for water delivery as claimed in claim 2, characterized in that: The first clutch and the second clutch are both electronically controlled clutches and are connected to the control center.

4. The open channel antifreeze system for water delivery as claimed in claim 2, characterized in that: The main shaft, turbulence motor and generator are all installed above the impeller and fixed on a mounting frame, and the lower end of the mounting frame is fixed on the bank of the conveying open channel.

5. The open channel antifreeze system for water delivery as claimed in claim 4, characterized in that: The turbulence control device also includes an impeller float, which is floated on the water surface of the conveying open channel, and the rotating shaft of the impeller is rotatably installed and connected to the impeller float.

6. The open channel antifreeze system for water delivery as claimed in claim 5, characterized in that: The belt mechanism includes a lower pulley installed on the rotating shaft of the impeller, an upper pulley on the main shaft directly above the lower pulley, and an intermediate pulley located obliquely above the lower pulley. The lower pulley and the intermediate pulley are respectively installed at both ends of a lever, and the middle position of the lever is installed on a fulcrum rotating shaft through a slide groove. The fulcrum rotating shaft is fixed on the mounting frame, and belts are sleeved on the lower pulley, the intermediate pulley and the upper pulley to form a triangle.

7. The open channel antifreeze system for water delivery as claimed in claim 6, characterized in that: A positioning rod with a non-circular cross section is fixed upwardly on the impeller float, and a positioning sleeve with a matching cross section shape is slidably mounted on the positioning rod, and the positioning sleeve is relatively fixed to the bank of the water delivery open channel through a cross bar; A roller is arranged between the inner surface of the positioning sleeve and the positioning rod.

8. The open channel antifreeze system for water delivery as claimed in claim 5, characterized in that: The impeller blades are provided with a plurality of openings, the edges of the openings are serrated, and when the blades are located at the bottom, the upstream side of the openings is covered with an elastic baffle, one end of the elastic baffle is fixed on the side of the blade, and the other end is movably provided.

9. The open channel antifreeze system for water delivery as claimed in claim 5, characterized in that: The temperature detection module includes a detection shell floating on the water surface, with a groove on the upper surface of the detection shell, an elastic airbag in the groove, a piston horizontally arranged above the elastic airbag, a piston rod extending upward from the outer upper part of the piston, a brush head horizontally arranged on the upper end of the piston rod, the outer end of the brush head can be moved up and down to match a vertically arranged conductive strip, one end of the conductive strip and one end of the brush head form a variable resistor and are connected to the temperature detection circuit, and the temperature detection circuit is connected to the control center; phase change gas is arranged in the elastic airbag.

10. The open channel antifreeze system for water delivery according to claim 9, characterized in that: The elastic airbag contains a first phase-change gas and a second phase-change gas, wherein the phase-change temperature of the first phase-change gas is 0-5°C, and the phase-change temperature of the second phase-change gas is -10-0°C; The detection housing is vertically penetrated with a positioning hole and can be slidably sleeved on a positioning pile up and down.

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