Automatic drainage system of high-speed medial strip cable well

Abstract

An automatic drainage system of a high-speed medial strip cable well comprises a water level collecting circuit, a controller and a water pump driving circuit. The water level acquisition circuit is located in the cable well; the signal output end of the water level collecting circuit is connected with the signal input end of the controller, the signal output end of the controller is connected with the water pump driving circuit, and the water pump driving circuit drives a water pump to work. A spraying unit is connected to the water pump and comprises a first spraying head and a second spraying head, and the first spraying head and the second spraying head are arranged in the vertical direction. The utility model discloses an automatic drainage system for a high-speed medial strip cable well, when the water level in the cable well is too high, a water pump can automatically pump water in the cable well and pump the pumped water to a green belt or above the green belt according to conditions, the use is convenient, the maintenance difficulty of workers on the high-speed cable well is reduced, and the maintenance efficiency is improved. Meanwhile, the controller is high in working stability, accurate in data collection and not prone to being interfered by external signals.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-speed central median cable wells, and particularly relates to an automatic drainage system for high-speed central median cable wells. Background Art

[0002] There are many cable wells in the central median of expressways. Due to rain and snow, water may seep into the cable wells, resulting in water accumulation. When the water accumulation is too deep, it will affect the normal operation of the cables in the cable wells. In the light case, it will affect their service life, and in the serious case, it will affect their insulation.

[0003] In the prior art, there are certain monitoring means for the liquid level in the cable well. When the monitored liquid level is relatively high, an alarm signal will be sent, and then the staff will handle it. The patent document with the authorization announcement number: CN220528239U discloses an edge IoT agent device applied to a cable well, which includes an edge computing module, a wireless data acquisition module, a security encryption module and a communication module. By using an environmental acquisition device and a temperature partial discharge sensor, it can detect the water immersion, water level, smoke and toxic, harmful, inflammable and explosive gas data of the cable well, and at the same time can detect the temperature and partial discharge data of the cable intermediate joint. The detected data is transmitted to the edge computing module through the wireless data acquisition module for edge computing. At the same time, a security encryption module and a communication module are set, and the edge computing results of the cable well environment and the temperature and partial discharge data of the cable intermediate joint can be uploaded to the management information area of the power internal network, so as to realize the acquisition of the cable intermediate joint partial discharge data while collecting environmental data, and send the data to the main station of the management information area after processing, greatly relieving the computing pressure of the main station and facilitating large-scale popularization and application.

[0004] This device can detect the water level condition of the cable well and transmit this information to the main station of the management information area. The acquisition of this information can greatly reduce the intensity of manual detection. However, when the water level is extremely high, workers still need to pump water manually. When pumping water, workers will bring a generator, a water pump and road administration traffic control, and place signs on the road. The generator generates electricity, and the water pump works to pump the water in the cable well. If there are too many vehicles on the road, there will be safety hazards for personnel to work on the lane; in addition, manual pumping is also time-consuming and laborious. Content of the Utility Model

[0005] The utility model aims to provide an automatic drainage system for high-speed central median cable wells with a simple structure and good use effect.

[0006] To solve the above technical problems, the present utility model provides the following technical solution: A high-speed median cable well automatic drainage system, comprising a water level acquisition circuit, a controller, and a water pump drive circuit; the water level acquisition circuit is located inside the cable well; the signal output end of the water level acquisition circuit is connected to the signal input end of the controller, the signal output end of the controller is connected to the water pump drive circuit, and the water pump drive circuit drives the operation of the water pump; a spraying unit is connected to the water pump, and the spraying unit includes a first nozzle and a second nozzle, the first nozzle faces the green belt, and the second nozzle faces away from the green belt.

[0007] A pipeline is connected to the water outlet of the water pump, and the pipeline is fixed on the manhole cover; the pipeline is made of rigid PVC; both ends of the pipeline are connected with ferrule joints.

[0008] The water level acquisition circuit includes a static pressure liquid level gauge and a signal processing circuit, the signal output end of the static pressure liquid level gauge is connected to the signal input end of the signal processing circuit, and the signal processing circuit outputs a signal to the signal input end of the controller.

[0009] The signal processing circuit includes a first diode, a second diode, an integrated operational amplifier, an optocoupler, a Schmitt inverter, and a voltage stabilizing tube; the first diode and the second diode are connected in parallel at the signal output end of the static pressure liquid level gauge. At the same time, the static pressure liquid level gauge is connected to the inverting input end of the integrated operational amplifier, the non-inverting input end of the integrated operational amplifier is grounded, the inverting input end of the integrated operational amplifier is connected to the output end of the integrated operational amplifier through a first resistor, the output end of the integrated operational amplifier is connected to the input end of the Schmitt inverter through the optocoupler, the input end of the Schmitt inverter is connected to the negative electrode of the voltage stabilizing tube, and the positive electrode of the voltage stabilizing tube is grounded; the output end of the Schmitt inverter is connected to the signal input end of the controller.

[0010] The spraying unit includes a connecting pipe, and the connecting pipe is connected to the ferrule joint at the upper end of the pipeline. An outlet pipe is connected to the water outlet of the water pump, and the outlet pipe is connected to the ferrule joint at the lower end of the pipeline.

[0011] The spraying unit includes a bracket, and a horizontally arranged first mounting rod is provided on the bracket. The connecting pipe is fixed on the first mounting rod, and the first mounting rod is fixed on the guardrail.

[0012] The upper part of the connecting pipe is connected with a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are respectively connected to the first nozzle and the second nozzle; a first solenoid valve and a second solenoid valve are respectively connected to the first branch pipe and the second branch pipe; the controller outputs a signal to control the operation of the first solenoid valve and the second solenoid valve.

[0013] A wireless transmission module is connected to the controller.

[0014] An intermediate pipe is connected to the connecting pipe, an irrigation pipe is connected to the intermediate pipe, and irrigation holes are evenly distributed on the irrigation pipe.

[0015] It also includes a control box, on which a solar panel is connected. A storage battery is provided inside the control box, and the solar panel charges the storage battery. The controller is also located inside the control box, and the storage battery powers the static pressure level gauge, the water pump, the controller, and the wireless transmission module.

[0016] Through the above technical solutions, the technical effects of the present utility model are as follows: Beneficial effects: 1. When the water level in the cable well is too high, the water pump of the present utility model can automatically pump the water in the cable well. According to the situation, the pumped water is pumped into the green belt or above the green belt, which is convenient to use, reduces the difficulty of maintenance of the high-speed cable well by the staff. At the same time, the single-chip microcomputer in it has high working stability, accurate data acquisition, and is not easily interfered by external signals; 2. The set signal processing circuit works stably, can avoid the impact of signals on the single-chip microcomputer, the single-chip microcomputer has a long service life and stable performance, and can effectively avoid external interference; 3. The set first solenoid valve and second solenoid valve can spray water to the outside according to needs, with high flexibility. After spraying in the green belt for a certain time, it sprays towards the upper part of the green belt. When the water sprays towards the upper part of the green belt, on the one hand, it can wash the leaves, and on the other hand, it can greatly reduce the amount of water flowing back into the cable well, thereby discharging the accumulated water in the cable well, with good use effect, and can also water the green belt; 4. The set first mounting rod can achieve the stability of the connecting pipe, and is convenient to fix. Description of the Drawings

[0017] Figure 1 It is the principle block diagram of the present utility model;

[0018] Figure 2 It is the circuit schematic diagram of the present utility model;

[0019] Figure 3 It is the structural schematic diagram of the present utility model. Detailed Embodiments

[0020] Embodiment 1, a high-speed central isolation belt cable well automatic drainage system, as Figures 1 to 3 shown, includes a water level acquisition circuit 9, a controller, and a water pump drive circuit; the water level acquisition circuit 9 is located inside the cable well 1; the water level acquisition circuit 9 is used to acquire the water level signal inside the cable well 1, and transmit the acquired water level signal to the controller. The controller outputs a signal according to the received water level signal to control the operation of the water pump drive circuit, and the water pump drive circuit drives the operation of the water pump 2; thus, when the water level in the cable well 1 exceeds the set value, the water pump 2 operates to pump out the water in it, avoiding excessive water from affecting the operation of the cables in the cable well 1.

[0021] Among them, the water level acquisition circuit 9 includes a static pressure level gauge J1 and a signal processing circuit. The signal output end of the static pressure level gauge J1 is connected to the signal input end of the signal processing circuit, and the signal processing circuit outputs a signal to the signal input end of the controller.

[0022] To ensure the use of the static pressure type liquid level gauge J1, an installation plate 8 is provided. The static pressure type liquid level gauge J1 is installed on the installation plate 8, and then it can be put into the cable well. In this embodiment, the static pressure type liquid level gauge J1 is a commercially available product, and its output is an analog signal.

[0023] The signal processing circuit includes a first diode D1, a second diode D2, an integrated operational amplifier U2, an optocoupler U4, a Schmitt inverter U5, and a voltage regulator diode D3. The positive electrode of the first diode D1 and the negative electrode of the second diode D2 are connected to the signal output end of the static pressure type liquid level gauge J1, and the negative electrode of the first diode D1 and the positive electrode of the second diode D2 are grounded.

[0024] A first resistor R1 is connected to the signal output end of the static pressure type liquid level gauge J1. The first end of the first resistor R1 is connected to the output end of the static pressure type liquid level gauge J1, and the first end of the second resistor R2 is also grounded through a first capacitor C1. At the same time, the second end of the second resistor R2 is connected to the inverting input end of the integrated operational amplifier U2, and the inverting input end of the integrated operational amplifier U2 is also connected to the output end of the integrated operational amplifier U2 through the first resistor R1. In addition, the non-inverting input end of the integrated operational amplifier U2 is grounded through a third resistor. The output end of the integrated operational amplifier U2 is connected to an analog-to-digital conversion chip U3 (model AD7888). The signal output end of the analog-to-digital conversion chip U3 is connected to the input end of the Schmitt inverter U5 through the optocoupler U4. The input end of the Schmitt inverter U5 is connected to the negative electrode of the voltage regulator diode D3, and the positive electrode of the voltage regulator diode D3 is grounded. The output end of the Schmitt inverter U5 is connected to the signal input end of the controller.

[0025] The static pressure type liquid level gauge J1 outputs an analog signal to the signal processing circuit. The first diode D1 and the second diode D2 clamp the voltage signal within ±0.7V to prevent damage to the circuit by excessive input signals. The integrated operational amplifier U2 is used to amplify the voltage signal. After the amplified signal is converted into a digital signal, it is sent to the optocoupler U4. The optocoupler U4 isolates the analog signal and the digital signal, increasing the anti-interference ability. The Schmitt inverter U5 is used to remove the glitch signal and the hump interference phenomenon, and the processed signal is sent to the controller.

[0026] In this embodiment, because the water level acquisition circuit is in a harsh application environment and there are many interference signals, it is necessary to add a signal processing circuit to reduce the influence of external signals on the collected signal and protect the subsequent controller at the same time.

[0027] The controller used in this embodiment is a single-chip microcomputer of model stm32f103c8t6. The output end of the Schmitt inverter U5 is connected to the signal input end of the single-chip microcomputer.

[0028] The water pump drive circuit is used to drive the operation of the water pump 2. The water pump 2 is located in the cable well 1, and the water in the cable well 1 can be pumped out through the water pump 2. Among them, the signal output terminal of the single-chip microcomputer is connected to the water pump drive circuit.

[0029] The water pump 2 used in this embodiment is a DC submersible pump 2, which is manufactured by Foshan LiHai Electric Appliance Co., Ltd., with the model: LHD238, the head is 25 - 150m, and the flow rate is 50 - 200L / h.

[0030] The water pump drive circuit includes a contactor, a first relay K1, a first triode Q1, and a third diode D4; the normally open contact of the contactor is connected in series in the power supply circuit of the water pump 2, and the coil of the contactor is connected between the normally open contact of the first relay K and the power supply. The signal output terminal of the single-chip microcomputer U1 is connected to the base of the first triode Q1, and the collector of the first triode Q1 is connected to the DC power supply through the coil of the first relay K1; at the same time, the collector of the first triode Q1 is connected to the positive pole of the third diode D4, and the negative pole of the third diode D4 is connected to the DC power supply. When the single-chip microcomputer U1 outputs a high level, the first triode Q1 conducts, the coil of the first relay K1 is energized, the normally open contact of the first relay K1 closes, the coil of the contactor is energized, and the normally open contact of the contactor closes, so that the water pump 2 is energized and the water pump 2 operates to pump out the water in the cable well 1.

[0031] A water outlet pipe 3 is connected to the outlet of the water pump 2, and a pipe 4 is connected to the end of the water outlet pipe 3. The pipe 4 passes through the manhole cover of the cable well 1 and is fixed on the manhole cover of the cable well 1. The material of the pipe 4 is rigid PVC; joints 5 are connected to both ends of the pipe 4, which is convenient for connecting with the water outlet pipe and the connecting pipe. In this embodiment, the joint 5 is a ferrule joint. Of course, a union joint or other joints can also be used for connection. The joints used are commercially available products. Using the joint 5 for connection and disassembly is fast and does not affect the maintenance of the equipment in the cable well.

[0032] The spraying unit further includes a bracket, and a horizontally arranged first mounting rod 15 is provided on the bracket, and the first mounting rod 15 can be fixed on the guardrails on both sides of the highway green belt.

[0033] A first branch pipe 11 and a second branch pipe 12 are connected to the connecting pipe 10. The first branch pipe 11 and the second branch pipe 12 are arranged vertically. The first branch pipe 11 is located below the second branch pipe 12. A first spray head 13 is connected to the first branch pipe 11; a second spray head 14 is connected to the second branch pipe 12. Among them, the first spray head 13 is arranged facing the green belt; the second spray head 14 is arranged facing above the green belt. When the second spray head 14 sprays atomized water, a part of it will be evaporated, and the other part will flow down along the leaves to the green belt, thereby reducing the amount of water flowing back into the cable well.

[0034] During implementation, in order to avoid affecting passing vehicles, the first nozzle 13 and the second nozzle 14 are selected as atomizing nozzles, so that the water pumped out by the water pump 2 is atomized and sprayed out through the first nozzle 13 and the second nozzle 14.

[0035] Among them, a first solenoid valve and a second solenoid valve are respectively connected to the first branch pipe 11 and the second branch pipe 12; the single-chip microcomputer U1 outputs signals to control the operation of the first solenoid valve and the second solenoid valve.

[0036] The single-chip microcomputer U1 outputs signals to the first solenoid valve and the second solenoid valve, so as to control the operation of the first solenoid valve and the second solenoid valve. When the first solenoid valve is opened, water can enter the first nozzle 13 through the first branch pipe 11 and then be sprayed out through the first nozzle 13; when the second solenoid valve is opened, water can enter the second nozzle 14 through the second branch pipe 12 and be sprayed out through the second nozzle 14.

[0037] To achieve the control of the operation of the first solenoid valve and the second solenoid valve, two solenoid valve drive circuits are connected to the signal output end of the single-chip microcomputer, and the two solenoid valve drive circuits respectively drive the operation of the first solenoid valve and the second solenoid valve. The solenoid valve drive circuit includes a second triode Q2, a fourth diode D5, and a second relay K2; the signal output end of the single-chip microcomputer is connected to the base of the second triode Q2. The collector of the second triode Q2 is connected to the DC power supply through the coil of the second relay K2. The collector of the second triode Q2 is also connected to the positive electrode of the fourth diode D5, and the negative electrode of the fourth diode D5 is grounded; the emitter of the second triode Q2 is grounded. At the same time, the normally open contact of the second relay K2 is connected to the power supply circuit of the solenoid valve coil. When the single-chip microcomputer outputs a high level, the second triode Q2 conducts, the coil of the second relay K2 is energized, and the normally open contact of the second relay K2 closes, so that the coil of the solenoid valve is energized and the corresponding solenoid valve opens, so that water can flow through; when the single-chip microcomputer outputs a low level, the corresponding solenoid valve closes, so that water cannot flow through.

[0038] The working process is as follows: The hydrostatic level gauge J1 in the cable well 1 collects the liquid level signal in the cable well 1, and transmits the collected liquid level signal into the signal processing circuit. After signal processing, it is transmitted to the single-chip microcomputer. The single-chip microcomputer compares it with the set value. When it exceeds the set value, the single-chip microcomputer outputs a signal to the water pump drive circuit. At the same time, it outputs a signal to the solenoid valve drive circuit connected to the first solenoid valve, so that the water pump 2 works. The pumped water enters the first sprinkler 13 and sprays onto the green belt. After working for a period of time, if the liquid level signal still exceeds the set value, the single-chip microcomputer outputs a signal to the solenoid valve drive circuit connected to the second solenoid valve, so that the water pumped by the water pump 2 is sprayed onto the upper part of the green belt through the second sprinkler 14. The atomized water above the green belt, part of it will be evaporated by the air, and the other part will fall on the leaves. On the one hand, it can wash the leaves, and on the other hand, it can also reduce the amount of water flowing back into the cable well. The first sprinkler 13 and the second sprinkler 14 work together to pump out the water in the cable well 1 so that it is lower than the set value.

[0039] Embodiment 2. The difference between this embodiment and Embodiment 1 is that: A wireless transmission module is connected to the single-chip microcomputer U1. The selected wireless transmission module is a GPRS module, and the model is SIM508. Among them, the connection method between the GPRS module and the single-chip microcomputer is a mature existing technology, which will not be elaborated in this embodiment.

[0040] Through the wireless transmission module, the water level information in the cable well 1 can be transmitted out and received by the staff. When the water level in the cable well 1 cannot drop for a long time, the staff needs to go to the site for processing.

[0041] Embodiment 3. The difference between this embodiment and Embodiment 1 is that: An intermediate pipe is further connected to the connecting pipe 10, and an irrigation pipe 6 is connected to the intermediate pipe. The irrigation pipe 6 is distributed on the ground of the green belt. At the same time, irrigation holes 7 are evenly distributed on the irrigation pipe 6.

[0042] The water pumped out of the cable well 1 by the water pump 2 enters the irrigation pipe 6 and flows into the ground of the green belt through the irrigation holes 7 on the irrigation pipe 6.

[0043] In order to control the operation of the irrigation pipe 6, a third solenoid valve is provided at the front end of the irrigation pipe 6, and the single-chip microcomputer U1 outputs a signal to control the operation of the third solenoid valve.

[0044] When the green belt is relatively dry, the hydrostatic level gauge J1 collects the liquid level signal in the cable well 1. When there is water in the cable well 1, the single-chip microcomputer U1 outputs a signal to drive the water pump 2 and the third solenoid valve to work, so as to pump the water into the irrigation pipe 6 and flow into the green belt through the irrigation holes 7, realizing the irrigation of the green belt.

[0045] Embodiment 4. The difference between this embodiment and Embodiment 1 is that: the controller is installed inside the control box, and a solar panel is connected to the control box. At the same time, a storage battery is provided inside the control box, and the solar panel supplies power to the storage battery, the water pump 2, the single-chip microcomputer U1, and the static pressure liquid level gauge J1. Among them, the solar panel absorbs light energy, converts the absorbed light energy into electrical energy, and stores it in the storage battery, which is a mature existing technology, and this embodiment will not introduce this part in detail.

[0046] The utility model discloses an automatic drainage system for a high-speed central divider cable well. When the water level in the cable well is too high, the water pump can automatically extract the water in the cable well and pump the extracted water into the green belt, which is convenient to use and reduces the difficulty of maintenance of the high-speed cable well by the staff. At the same time, the single-chip microcomputer therein has high working stability, accurate data acquisition, and is not easily interfered by external signals.

Claims

1. An automatic drainage system for a high-speed median cable trench, characterized in that: It includes a water level acquisition circuit, a controller and a water pump drive circuit; the water level acquisition circuit is located in the cable well; the signal output end of the water level acquisition circuit is connected to the signal input end of the controller, the signal output end of the controller is connected to the water pump drive circuit, and the water pump drive circuit drives the operation of the water pump; a spraying unit is connected to the water pump, the spraying unit includes a first nozzle and a second nozzle, the first nozzle and the second nozzle are arranged vertically, the water level acquisition circuit includes a static pressure liquid level gauge and a signal processing circuit, the signal output end of the static pressure liquid level gauge is connected to the signal input end of the signal processing circuit, and the signal processing circuit outputs a signal to the signal input end of the controller; The signal processing circuit includes a first diode, a second diode, an integrated operational amplifier, an optocoupler, a Schmitt inverter and a voltage stabilizing tube; the first diode and the second diode are connected in parallel at the signal output end of the static pressure liquid level gauge. At the same time, the static pressure liquid level gauge is connected to the inverting input end of the integrated operational amplifier, the non-inverting input end of the integrated operational amplifier is grounded, the inverting input end of the integrated operational amplifier is connected to the output end of the integrated operational amplifier through a first resistor, the output end of the integrated operational amplifier is connected to the input end of the Schmitt inverter through an optocoupler, the input end of the Schmitt inverter is connected to the negative pole of the voltage stabilizing tube, and the positive pole of the voltage stabilizing tube is grounded; the output end of the Schmitt inverter is connected to the signal input end of the controller.

2. The automatic drainage system for the high-speed median cable trench according to claim 1, characterized in that: A pipeline is connected to the water outlet of the water pump, and the pipeline is fixed on the manhole cover; the pipeline is made of rigid PVC; both ends of the pipeline are connected with ferrule joints.

3. The automatic drainage system for a high-speed median cable trench according to claim 2, characterized in that: The spraying unit includes a connecting pipe, the connecting pipe is connected to the ferrule joint at the upper end of the pipeline, a water outlet pipe is connected to the water outlet of the water pump, and the water outlet pipe is connected to the ferrule joint at the lower end of the pipeline.

4. The automatic drainage system for high-speed median cable ducts according to claim 3, wherein: The spraying unit includes a bracket, a horizontally arranged first mounting rod is provided on the bracket, the connecting pipe is fixed on the first mounting rod, and the first mounting rod is fixed on the guardrail.

5. The automatic drainage system for the high-speed median cable trench according to claim 4, characterized in that: The upper part of the connecting pipe is connected with a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are respectively connected to the first nozzle and the second nozzle; a first solenoid valve and a second solenoid valve are respectively connected to the first branch pipe and the second branch pipe; the controller outputs a signal to control the operation of the first solenoid valve and the second solenoid valve.

6. The automatic drainage system for the high-speed median cable trench according to claim 5, characterized in that: A wireless transmission module is connected to the controller.

7. The automatic drainage system for the high-speed median cable trench according to claim 5, characterized in that: An intermediate pipe is connected to the connecting pipe, an irrigation pipe is connected to the intermediate pipe, and irrigation holes are evenly distributed on the irrigation pipe.

8. The automatic drainage system for the high-speed median cable trench according to claim 5, wherein: It also includes a control box, a solar panel is connected to the control box, a storage battery is provided in the control box, and the solar panel charges the storage battery; the controller is also located in the control box, and the storage battery supplies power to the static pressure liquid level gauge, the water pump, the controller and the wireless transmission module.

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