Siphon automatic air exhausting and water supplementing device adapting to unmanned remote control liquid level and using method

Abstract

The invention discloses a siphon automatic air extracting and water supplementing device adapting to unmanned remote control liquid level and a using method, and belongs to the field of water conservancy. The device comprises a siphon located between a water supply target and a water source, an automatic air extracting device is arranged at the top of the siphon, and an automatic water supplementing valve is installed at the tail end of the siphon; a water level sensor is arranged in the water supply target, the water level sensor is in signal connection with the signal receiving and transmitting control device, and the signal receiving and transmitting control device is connected with the automatic air extractor. According to the siphon automatic air exhausting and water supplementing device suitable for unmanned remote control of the liquid level and the using method, the vacuum degree condition of the siphon can be monitored in real time, and automatic air exhausting can be achieved; after the water level drops, the main valve is controlled by the floating ball switch to open the water inlet, water is injected into a pool according to the siphon principle, water is automatically supplemented, and the automatic siphon valve has the advantages of being good in water stopping and sealing effect, long in service life, convenient to install and maintain, stable and reliable in long-term multiple siphoning and the like.

Description

Technical Field

[0001] The invention relates to a siphon automatic air extraction and water replenishing device suitable for unattended remote liquid level control and a use method thereof, belonging to the field of water conservancy. Background Art

[0002] Long-distance water transfer projects often connect their water sources and target water supply through siphons. The target water supply can be used for water diversion, irrigation, firefighting, landscaping, and domestic needs. To maintain a stable water supply level over the long term, siphons located far from urban areas and villages require unmanned, remote, and precise control over the opening and closing of the siphons.

[0003] Currently, water level maintenance relies primarily on a series of devices and measures, including large water pumps and siphon pipes that require constant human intervention. However, large water pumps require an uninterrupted power supply, making them prone to failure and reliability uncertain. Siphon pipes that require constant human intervention consume manpower and result in inaccurate water level control. Frequent opening and closing of valves can easily lead to air accumulation in the siphon pipe hump, significantly reducing the reliability and efficiency of repeated siphoning.

[0004] An automatic siphon vacuum pump for liquid level monitoring consists of a vacuum gauge and a vacuum pump, which monitor the vacuum level of the siphon tube hump in real time and automatically pump air when the vacuum threshold is exceeded. A float valve, consisting of a curved arm and a float, can be used to automatically control the liquid level in a water tower or tank. A liquid level regulator, consisting of a threaded adjustment rod and an electric motor, controls the height of the float, thereby controlling the liquid level, by rotating the rod based on the water level information from the water level sensor. This system offers unattended, remote control, flexibility, durability, high liquid level control accuracy, water level immunity from water pressure, tight opening and closing, and reliable and efficient multiple siphoning. A siphon tube is a curved pipe used to create the siphoning effect.

[0005] Chinese Patent Authorization Announcement No. CN204302818 discloses a water level maintenance method, including a main water tank and a secondary water tank, wherein a water pipe is provided between the main water tank and the secondary water tank, wherein one end of the water pipe is provided in the main water tank, and the other end of the water pipe is connected to the secondary water tank, and the end of the water pipe located in the main water tank is connected to a water level control assembly, and the end of the water pipe connected to the secondary water tank is connected to a water pump provided at the bottom of the secondary water tank through a water pipe. The automatic water level maintenance device is automatically controlled by a PLC, and the liquid level difference and the coordinated work of an electromagnet are used to control the lifting and lowering of the piston block, thereby realizing the opening and closing of the water pipe, thereby realizing two-way control of the water level. This patent uses a water pump to replenish the water body. The repair and maintenance of the water pump not only consumes manpower and financial resources, but also the height of the water supply level cannot be freely adjusted, which makes water level monitoring unable to be guaranteed in the long term, and requires someone to supervise and cannot be remotely controlled. Therefore, it is necessary to develop a more energy-saving, stable and reliable device and method. Summary of the Invention

[0006] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a siphon automatic air extraction and water replenishment device and a method of use that are suitable for unattended remote control of liquid levels. The device has a simple design, is easy to operate, is energy-saving and environmentally friendly, and is stable and reliable, providing a reliable structure for daily monitoring and maintenance of water levels.

[0007] Technical solution: In order to solve the above technical problems, the present invention provides a siphon automatic air extraction and water replenishment device suitable for unattended remote control of liquid level, including a siphon tube located between the water supply target and the water source, an automatic air extraction device is provided on the top of the siphon tube, an automatic water replenishment valve is installed at the end of the siphon tube, a water level sensor is provided in the water supply target, the water level sensor is connected to the signal receiving and sending control device, and the signal receiving and sending control device is connected to the automatic air extraction device.

[0008] Preferably, the automatic water replenishment valve includes a valve body, one end of the valve body is connected to the siphon tube, a first lever is provided in the valve body, the end of the first lever is connected to the second lever through a first connecting rod (wherein the first connecting rod can rotate 360 ​​degrees at its two end fixed points), both ends of the first connecting rod are hingedly connected, the second lever is hingedly mounted on the water tank, the second lever is connected to the float through the second connecting rod, a water passage is provided in the valve body, the first lever is hinged on the valve body, the front end of the valve body is located on the water passage, the up and down movement of the float drives the second lever to rotate, and the second lever drives the first lever to rotate through the first connecting rod, thereby opening or closing the water passage.

[0009] Preferably, a valve core silicone is installed at the front end of the first lever.

[0010] As a preference, the automatic air extraction device includes a vacuum pump, and a vacuum gauge is installed in the siphon. When the vacuum degree exceeds a threshold, the vacuum pump automatically starts to extract air. P vacuum =− ρgH +Δ P loss , r is the density of water, g is the acceleration due to gravity, H is the siphon installation height, Δ P loss is the pipeline friction loss pressure value (negative value). P vacuum >− ρgH +Δ P loss When , start the vacuum pump; P vacuum ≤− ρgH +Δ P loss , automatically shut down.

[0011] Preferably, it also includes a liquid level regulator, which consists of an adjusting threaded rod and an electric motor. One end of the adjusting threaded rod is connected to the second connecting rod, the second connecting rod is connected to the float, and the other end is connected to the motor, wherein the motor is embedded and fixed inside the second lever, and the water level is measured by a water level sensor. The signal receiving and sending control device controls the precision transmission machine to rotate the threaded rod according to remote instructions to adjust the float position, thereby realizing the control of the water replenishment level.

[0012] As a preference, the maximum installation height of the automatic air extraction device is , is the vacuum height at the top of the siphon, which is generally between 6 and 8 m; v is the flow velocity in the siphon.

[0013] Preferably, the signal receiving and transmitting control device is installed on the solar battery, and the signal receiving and transmitting control device is connected to the automatic air extraction device and the liquid level regulator. The signal receiving and transmitting control device is composed of a signal receiver, a transmitter, and a control system. It receives water level and vacuum degree information and sends it remotely to the engineering management room, and controls the opening and closing of the vacuum pump of the automatic air extraction device and the motor of the liquid level regulator through the control system.

[0014] A method for using a siphon automatic air extraction and water replenishment device suitable for unattended remote liquid level control, specifically comprising the following steps: Step 1: Install the device correctly according to the device installation requirements; Step 2: Remotely set the target water level based on water supply requirements; Step 3: The remote control signal receiving and sending control device starts the siphon, when the vacuum meter P vacuum >− ρgH +Δ P loss , the vacuum pump is started by the signal receiving and controlling device. P vacuum ≤− ρgH +Δ P loss , the vacuum pump automatically shuts down; Step 4: When the water level drops, the main valve is driven by the float to push down the second lever, and the second lever then pulls down the first lever through the first link to open the water inlet and use the siphon principle to fill the pool with water, thus achieving automatic water replenishment; Step 5: When the water level reaches the set height, the main valve lifts the second lever through the float, and the second lever then lifts the first lever through the first connecting rod. The silicone valve core at the end of the first lever seals the water inlet port, controlling the closure of the water inlet and stopping the water supply; Step 6: When the target water level needs to be adjusted, the liquid level height is set remotely. When the target water level is adjusted upward, the signal receiving and sending control device starts the two motors, which rotate the two threaded rods in the forward direction. The threaded rods adjust the height of the connecting rod upward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed. When the target water level is adjusted downward, the signal receiving and sending control device starts the two motors, which rotate the two threaded rods in the reverse direction. The threaded rods adjust the height of the connecting rod downward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed. According to the application of Bernoulli equation in the siphon principle, the water flow rate of the device can be calculated: (1) Where: Dh The head difference between the water source and the water replenishment target; g is the local head loss coefficient of siphon transposition; l is the head loss coefficient along the siphon tube transposition.

[0015] According to the application of Bernoulli's equation in the siphon principle, the maximum installation height of the pipe top of the device can be calculated: (2) Where: It is the vacuum height at the top of the siphon tube, which is generally between 6 and 8 meters; v is the flow rate in the siphon.

[0016] Beneficial Effects: The present invention provides a siphon automatic air extraction and water replenishment device and method for use that allows for unattended remote liquid level control. The device achieves the following beneficial effects: It can monitor the vacuum level of the siphon tube in real time and automatically pump air. When the water level drops, the main valve, controlled by a float switch, opens the water inlet, allowing water to be automatically replenished into the pool using the siphon principle. The device has excellent water-stop sealing, a long service life, easy installation and maintenance, and stable and reliable siphoning over long periods of time. It can monitor the water supply level in real time, enabling precise, unattended remote liquid level control without being affected by water pressure. The float valve can be installed at any position, depending on the pool height and available space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram illustrating the relative positions of the components of this device; Figure 2 This is a detailed diagram of the valve structure of this device.

[0018] The meaning of the accompanying figures: 1-filter; 2-valve body; 3-valve core silicone; 4-first lever; 5-first connecting rod; 6-second lever; 7-motor; 8-threaded rod; 9-second connecting rod; 10-float; 11-siphon; 13-automatic air extraction device; 14-solar battery; 15-liquid level regulator; 16-automatic water replenishment valve. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 to Figure 2 As shown, the operating principle of this embodiment is to monitor and extract the vacuum level of the siphon hump through an automatic vacuum device. The movement of the float on the water surface drives the lever to rotate, thereby automatically opening and closing the valve. A water level sensor monitors the liquid level in real time, and the level regulator rotates a threaded rod to adjust the float height to achieve liquid level control. Signal transmission and control of the device are handled by a signal transmission and control device, and the device's energy is provided by a solar battery. The siphon device needs to be installed at a certain height between the water replenishment target and the water source.

[0021] Please see the attached Figure 1 Place one end of the outlet at the water supply target, one end of the water inlet at the water source, and the float above the liquid level of the water supply target. Install the automatic air extraction device at the highest point (hump) of the siphon. If the pipeline is long (e.g., over 100 meters), add an air extraction interface in the middle. Install the automatic water supply valve at the outlet, connect the liquid level regulator to the float and automatic water supply valve, and install the water level sensor at the bottom of the water supply target. Install the signal receiving and control transducer in a safe and reliable location that is dry, close to the water supply target, and free from animal and environmental interference. Install the dedicated solar cell in a location that is directly exposed to sunlight, unobstructed, and close to the signal receiving and control device.

[0022] An automatic air extraction device is used for vacuum monitoring and air extraction processing of the siphon hump; a float automatic water replenishment valve is used to control the automatic opening and closing of the siphon tube; the siphon tube is used to achieve automatic replenishment of water; a liquid level regulator is used to control the water supply level; a water level sensor is used to monitor the liquid level of the water supply target; a signal receiving and sending control device is used for signal transmission and remote control of the device; and a solar battery is used to generate the power required by the device.

[0023] Stainless steel die-casting technology ensures a precise fit between each lever and component, preventing corrosion, loosening, or jamming, ensuring the long-term stable operation of the ball valve. The first lever is L-shaped, and the second lever is T-shaped. Furthermore, the stainless steel component design allows the ball valve to operate in high-humidity environments without chemical corrosion, ensuring pure and healthy drinking water.

[0024] Figure 2The high-strength sealing silicone shown in the figure ensures a secure and reliable sealing mechanism under high water pressure and repeated opening and closing. It also includes a pump tube for siphoning water, and sealant for sealing the joints at the equipment. The motor rotates a vertical threaded rod (on which a float moves up and down) to adjust the water supply level to meet varying water demands. The motor has an IP68 waterproof rating, making it resistant to long-term immersion. The power cord uses a waterproof cable.

[0025] The vacuum gauge of this device adopts a miniaturized piezoresistive vacuum gauge, which is embedded and the measurement data is integrated into the signal receiving and transmitting control device. The range is -0.1 ~ 0 MPa, and the allowable error (full scale) is ±1%. The vacuum pump adopts a variable frequency screw pump, and the speed is adjusted according to the vacuum load. The control device integrates the vacuum gauge signal to control the self-start (set the vacuum threshold) P vacuum >− ρgH +Δ P loss , automatically turned on; P vacuum ≤− ρgH +Δ P loss , automatically shuts off), and uses two pumps in parallel (one active, one backup) to prevent siphon interruption due to a single pump failure. The pumping rate is determined by the siphon model. The water level sensor is a pressure sensor with a range of 0 to 50m and an accuracy of 1mm.

[0026] This device uses solar batteries to power the water level sensor, vacuum meter, sensor signal remote receiver, vacuum device, precision transmission machine and its control system. It is equipped with high-performance solar panels and uses lead-carbon batteries to adapt to high-altitude cold areas (-30℃). The battery capacity ensures 24-hour continuous power supply and 1 spare battery is available.

[0027] This device should be installed at a certain height between the water source and the water supply target to meet the maximum negative pressure of the siphon pipe; to ensure that the vacuum environment is not destroyed, the water inlet and outlet should be placed below the water surface; generally, the vacuum height at the top of the siphon pipe is limited to 6-8m.

[0028] The present invention provides an operation procedure of a siphon automatic air extraction and water replenishment device suitable for unattended remote liquid level control, which specifically includes the following steps: Step 1: Install the device correctly according to the device installation requirements.

[0029] Step 2: Remotely set the target water level (water level height) based on water supply requirements.

[0030] Step 3: The remote control signal receiving and sending control device starts the siphon, when the vacuum meter P vacuum >− ρgH +Δ P loss , the vacuum pump is started by the signal receiving and controlling device. P vacuum ≤− ρgH +Δ P loss , the vacuum pump automatically shuts down.

[0031] Step 4: When the water level drops, the main valve is driven by the float 10 to drive the second connecting rod 9 to press down the second lever (6, T-shaped). The second lever (6, T-shaped) pulls down the first lever (4, L-shaped) through the first connecting rod 5 to open the water inlet and use the siphon principle to fill water into the pool, realizing automatic water replenishment.

[0032] Step 5: When the water level reaches the set height, the main valve lifts the second lever (6, T-shaped) through the second connecting rod 9 of the float, and the second lever then lifts the first lever (4, L-shaped) through the first connecting rod 5. The valve core silicone 3 seals the water inlet port, controlling the closure of the water inlet to stop water supply.

[0033] Step 6: When the target water level needs to be adjusted, the liquid level height is set remotely. When the target water level is adjusted upward, the signal receiving and sending control device starts the two motors 7, and the motor 7 rotates the two threaded rods 8 in the forward direction. The threaded rods 8 adjust the height of the second connecting rod 9 upward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed. When the target water level is adjusted downward, the signal receiving and sending control device starts the two motors 7, and the motor 7 rotates the two threaded rods 8 in the reverse direction. The threaded rods 8 adjust the height of the second connecting rod 9 downward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed.

[0034] According to the application of Bernoulli equation in the siphon principle, the water flow rate of the device can be calculated: (1) Where: Dh is the head difference between the water source and the water replenishment target; ζ is the local head loss coefficient of the siphon transposition; l is the head loss coefficient along the siphon tube transposition.

[0035] According to the application of Bernoulli equation in the siphon principle, the maximum installation height of the pipe top of the device can be calculated: (2) Where: It is the vacuum height at the top of the siphon tube, which is generally between 6 and 8 meters; v is the flow rate in the siphon.

[0036] Under normal circumstances, when no damage occurs, the height of the second connecting rod 9 can be adjusted by the motor 7 (moving up and down on the vertical threaded rod 8) to meet different water demand requirements; error compensation or device repair work can be performed through the first lever and the second lever.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A siphon automatic air extraction and water replenishment device suitable for unattended remote control of liquid level, characterized by: It includes a siphon tube located between the water supply target and the water source, an automatic air pumping device is provided at the top of the siphon tube, an automatic water replenishment valve is installed at the end of the siphon tube, a water level sensor is provided in the water supply target, the water level sensor is connected to the signal receiving and sending control device, and the signal receiving and sending control device is connected to the automatic air pumping device.

2. The siphon automatic air extraction and water replenishing device suitable for unattended remote control of liquid level according to claim 1 is characterized in that: The automatic water replenishment valve includes a valve body, one end of which is connected to the siphon tube, a first lever is provided in the valve body, the end of the first lever is connected to the second lever through a first connecting rod, the second lever is hingedly mounted on the water tank, the second lever is connected to the float through a second connecting rod, a water passage is provided in the valve body, the first lever is hinged on the valve body, the front end of the valve body is located on the water passage, the second lever is driven to rotate by the up and down movement of the float, and the second lever drives the first lever to rotate through the first connecting rod, thereby opening or closing the water passage.

3. The siphon automatic air extraction and water replenishing device adapted for unattended remote liquid level control according to claim 2 is characterized in that: A valve core silicone is installed at the front end of the first lever.

4. The siphon automatic air extraction and water replenishing device adapted for unattended remote liquid level control according to claim 2 is characterized in that: The automatic air extraction device includes a vacuum pump, and a vacuum meter is installed in the siphon. When the vacuum degree exceeds the threshold, the vacuum pump automatically starts to extract air. P vacuum =− ρgH +Δ P loss , ρ is the density of water, g is the acceleration due to gravity, H is the siphon installation height, Δ P loss is the pipeline friction loss pressure value, which is a negative value. P vacuum >− ρgH +Δ P loss When , start the vacuum pump; P vacuum =− ρgH +Δ P loss , automatically shut down.

5. The siphon automatic air extraction and water replenishing device adapted for unattended remote liquid level control according to claim 1 is characterized in that: It also includes a liquid level regulator, which consists of an adjusting threaded rod and an electric motor. One end of the adjusting threaded rod is connected to the second connecting rod, the second connecting rod is connected to the float, and the other end is connected to the motor, wherein the motor is embedded and fixed inside the second lever, and the water level is measured by a water level sensor. The signal receiving and sending control device controls the precision transmission machine to rotate the threaded rod according to remote instructions to adjust the float position, thereby realizing the control of the water replenishment level.

6. The siphon automatic air extraction and water replenishing device adapted for unattended remote liquid level control according to claim 1 is characterized in that: The maximum installation height of the automatic exhaust device , is the maximum installation height, in m; The vacuum height at the top of the siphon tube is between 6 and 8 meters. p is the atmospheric pressure, is the density of water, 9800N / m 3 ; v is the flow velocity in the siphon, λ is the head loss coefficient along the siphon tube transposition; L is the pipe length, in m; d is the pipe diameter, in m; ζ is the local head loss coefficient of siphon transposition; g is the acceleration due to gravity.

7. The siphon automatic air extraction and water replenishing device adapted for unattended remote liquid level control according to claim 1 is characterized in that: The signal receiving and transmitting control device is installed on the solar battery and is connected to the automatic air extraction device and the liquid level regulator. The signal receiving and transmitting control device is composed of a signal receiver, a transmitter, and a control system. It receives water level and vacuum degree information and sends it remotely to the engineering management room. The control system controls the opening and closing of the vacuum pump of the automatic air extraction device and the motor of the liquid level regulator.

8. A method for using the siphon automatic air extraction and water replenishment device adapted for unattended remote liquid level control according to any one of claims 1 to 7, comprising the following steps: Step 1: Install the device correctly according to the device installation requirements; Step 2: Remotely set the target water level based on water supply requirements; Step 3: The remote control signal receiving and sending control device starts the siphon, when the vacuum meter P vacuum >− ρgH +Δ P loss , the vacuum pump is started by the signal receiving and controlling device. P vacuum ≤− ρgH +Δ P loss , the vacuum pump automatically shuts down; Step 4: When the water level drops, the main valve is driven by the float to drive the second connecting rod, pressing down the second lever. The second lever then pulls down the first lever through the first connecting rod to open the water inlet and use the siphon principle to fill the pool with water, thus achieving automatic water replenishment. Step 5: When the water level reaches the set height, the main valve's float lifts the second lever, which in turn lifts the first lever. The silicone valve core at the end of the first lever seals the water inlet port, controlling the closing of the water inlet and stopping the water supply. Step 6: When the target water supply level needs to be adjusted, the liquid level height is set remotely. When the target water supply level is increased, the signal receiving and sending control device starts the motor, and the motor rotates the two threaded rods in the forward direction. The threaded rods adjust the height of the connecting rod upward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed. When the target water supply level is lowered, the signal receiving and sending control device starts the motor, and the motor rotates the two threaded rods in the reverse direction. The threaded rods adjust the height of the connecting rod downward, and the liquid level is measured in real time by the water level sensor. When the liquid level reaches the set liquid level value, the motor stops rotating, and the liquid level adjustment is completed.

Images