Anti-backflushing protection system for pipeline high-pressure cleaning vehicle

Abstract

The utility model discloses an anti-back-flushing protection system for a pipeline high-pressure cleaning vehicle. The anti-back-flushing protection system comprises an anti-back-flushing safety grid and an intelligent protection device. A sensor mounting position for mounting a detection sensor is arranged on the anti-recoil safety grid; the intelligent protection device comprises a control module, a key module, a display module, a detection sensor, a sensor input module, a relay output module, a switching value input module and a power module, the modules are electrically connected, and the detection sensor is installed at a sensor installation position of the anti-recoil safety grid. And the control module performs coordinated control on detection and interlocking protection of the high-pressure water gun. The anti-backflushing safety grid is improved on the basis of a traditional anti-backflushing safety grid and is matched with a highly-integrated intelligent terminal device, operation safety protection of the pipeline high-pressure cleaning vehicle is achieved, personal injury caused by backflushing of a high-pressure water gun is prevented in a mechanical and electrical matching mode, and the purposes of eliminating potential safety hazards and protecting safety of operators are achieved. Good popularization and application values are realized.

Description

Technical Field

[0001] This utility model relates to the field of safe operation technology of pipeline high-pressure cleaning truck, and in particular to an anti-backflow protection system for pipeline high-pressure cleaning truck. Background Technology

[0002] High-pressure cleaning trucks are widely used for powerful cleaning of urban roads, including curbs, guardrails, traffic cones, and billboards. They can also flush sewers and provide cooling and dust suppression in summer. When operating high-pressure cleaning trucks, anti-backflow protection devices need to be added to manhole covers to ensure the safety of operators. Existing anti-backflow protection devices are all mechanical and lack intelligent detection and interlocking functions. Therefore, it is necessary to research and design a safer and more intelligent protection structure system to improve the safety of high-pressure water flushing operations. Summary of the Invention

[0003] This utility model addresses the above-mentioned problems by providing an anti-backflow protection system for high-pressure pipeline cleaning vehicles. The technical solution of this utility model is as follows:

[0004] A backflush protection system for a pipeline high-pressure cleaning vehicle includes a backflush safety grid and an intelligent protection device. The backflush safety grid is used to insert a high-pressure water gun and form backflush protection for the high-pressure water gun. The intelligent protection device is used to connect to the electrical control system of the pipeline high-pressure cleaning vehicle to form interlock protection for the high-pressure water gun.

[0005] The anti-backflow safety grid is provided with a sensor mounting position for installing a detection sensor. The detection sensor detects the insertion of the high-pressure water gun and converts it into an electrical signal that is fed back to the intelligent protection device.

[0006] The intelligent protection device includes a control module, a button module, a display module, a detection sensor, a sensor input module, a relay output module, a switch input module, and a power supply module. The modules are electrically connected. The detection sensor is installed at the sensor mounting position of the anti-backlash safety grid. The control module coordinates and controls the detection and interlocking protection of the high-pressure water gun.

[0007] As a further explanation of this utility model, the intelligent protection device is connected in series with the flushing switch circuit of the pipeline high-pressure cleaning vehicle through the switch contacts of the relay output module to control the pressurization and flushing of the high-pressure water gun.

[0008] Furthermore, the detection sensor is a ranging sensor, the sensor mounting position is located below the cover plate of the anti-recoil safety grid, and the sensor input module is a high-precision A / D converter that converts the input voltage of the ranging sensor into distance information.

[0009] Furthermore, the relay output module and the digital input module are provided with expansion interfaces for functional expansion.

[0010] Furthermore, the anti-recoil safety grid is equipped with a magnetic door switch for checking whether the anti-recoil safety grid is locked in place, and the magnetic door switch is connected through the expansion interface of the switch input module.

[0011] Furthermore, the expansion interface of the relay output module is connected in series with the electrical control system of the pipeline high-pressure cleaning vehicle for emergency stop control.

[0012] Furthermore, the power module includes a 24V DC power supply unit and a power conversion circuit unit, wherein the 24V DC power supply is introduced by the electrical control system of the pipeline high-pressure cleaning vehicle, and the power conversion circuit converts the 24V power supply into 5V and 3.3V to power other modules of the intelligent protection device.

[0013] Furthermore, it also includes a Bluetooth module as a backup communication interface. The control module uses a microcontroller with a Bluetooth interface as the main control chip and communicates wirelessly with the smart terminal through the Bluetooth module.

[0014] Furthermore, it also includes an alarm module, which is an audible and visual alarm module, including LED indicator lights and a buzzer, to provide an audible and visual alarm reminder when the detection signal of the detection sensor is abnormal.

[0015] The beneficial effects of this utility model are:

[0016] This invention improves upon existing traditional anti-backflow safety grids by incorporating a highly integrated intelligent terminal device that includes control, touch, display, serial port, network, storage, and power modules. This device provides operational safety protection for high-pressure pipeline cleaning vehicles, featuring intelligent detection and interlocking protection functions. Through a combination of mechanical and electrical methods, it prevents personal injury caused by high-pressure water jet backflow, eliminating safety hazards and protecting workers. It has significant potential for widespread application. The intelligent protection device is compact, highly integrated, and the terminal is characterized by low cost, high flexibility, and ease of operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the anti-backflow protection system for a high-pressure pipeline cleaning vehicle, as described in this utility model embodiment.

[0018] Figure 2 This is a schematic diagram of the relay output module circuit of an embodiment of the present invention;

[0019] Figure 3This is a schematic diagram of the anti-recoil safety grid structure of an embodiment of the present invention.

[0020] Attached labels: 1. Anti-backlash safety grid; 2. High-pressure water gun; 3. Distance sensor. Detailed Implementation

[0021] Example:

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] See appendix Figure 1-3 The diagram illustrates an anti-backflow protection system for a high-pressure pipeline cleaning vehicle, comprising an anti-backflow safety grid 1 and an intelligent protection device. The anti-backflow safety grid 1 is used to insert a high-pressure water gun 2 and form anti-backflow protection for the high-pressure water gun 2. The intelligent protection device is used to connect to the electrical control system of the high-pressure pipeline cleaning vehicle to form interlock protection for the high-pressure water gun 2. The anti-backflow safety grid 1 is provided with a sensor mounting position for installing a detection sensor. The detection sensor detects the insertion status of the high-pressure water gun 2 and converts it into an electrical signal, which is fed back to the intelligent protection device. The intelligent protection device includes a control module, a button module, a display module, a detection sensor, a sensor input module, a relay output module, a switch input module, and a power supply module. The modules are electrically connected. The detection sensor is installed at the sensor mounting position of the anti-backflow safety grid 1, and the control module coordinates and controls the detection and interlock protection of the high-pressure water gun 2.

[0025] The anti-backflow protection system for the pipeline high-pressure cleaning truck in this embodiment is mainly used for the operational safety protection of the pipeline high-pressure cleaning truck. It can be divided into two main parts: a mechanical part and an intelligent protection device. The mechanical part is almost identical in structure to the traditional anti-backflow safety grid 1, the only difference being the addition of sensor mounting positions on the anti-backflow safety grid 1. The mechanical part and the ranging sensor 3 are mechanically connected, and the ranging sensor 3 is connected to the sensor input module of the intelligent protection device via a cable. All modules of the intelligent protection device are electrically connected, with the control module at its core, coordinating all modules to achieve intelligent detection of the high-pressure water gun 2, and controlling the electrically controlled pressurization circuit of the cleaning truck through the relay output module to achieve interlocking protection.

[0026] In this embodiment, the detection sensor is a distance sensor 3, which is installed below the cover plate of the anti-backlash safety grid 1. The sensor input module is a high-precision A / D converter that converts the input voltage of the distance sensor 3 into distance information, which is then displayed on a 4-digit 8-segment display. In actual operation, the anti-backlash safety grid 1 with the distance sensor 3 is connected to the distance sensor 3 interface of the intelligent protection device via a wired connection. The control module CH571R detects the distance in real time and displays it on the 4-digit 8-segment display. The intelligent protection device is installed on the control panel of the cleaning truck and is powered by 24V DC from the cleaning truck's electronic control system. When the operator performs the flushing operation, following the work procedure, the anti-backlash safety grid 1 and the high-pressure water gun nozzle are placed, and the flushing switch is turned on to begin the operation. If the nozzle is not inserted properly before the flushing switch is turned on or is accidentally dislodged during operation, the relay output of the intelligent protection device will switch to the off state, disconnecting the flushing relay circuit of the cleaning truck's electronic control system, thereby ensuring operational safety.

[0027] like Figure 2 As shown, in this embodiment, CH571R controls a 5V relay via GPIO. The switches KF1's contacts 1 and 2 are fed into the flushing switch circuit of the cleaning vehicle's electronic control system, thereby controlling the pressurized water flow. CH571R controls the opening and closing of KF1 based on sensor status and control logic. When KF1 is closed, the cleaning vehicle can normally pressurize and flush; when it is open, it is in a protection state, and the cause can be troubleshooted based on the status prompts of the intelligent protection device.

[0028] In a preferred embodiment, the relay output module and the digital input module are provided with expansion interfaces for functional expansion. Both the digital input and relay output interfaces have reserved expansion interfaces. The digital input is used to support the detection of other digital quantities besides pressurization (e.g., a magnetic door switch for detecting whether the grid is locked in place; the anti-backlash safety grid 1 is equipped with a magnetic door switch for detecting whether the anti-backlash safety grid 1 is locked in place, and the magnetic door switch is connected through the expansion interface of the digital input module). The relay output is used to support emergency stop and other control operations, and is connected in series with the electrical control system of the pipeline high-pressure cleaning vehicle through the expansion interface of the relay output module for emergency stop control.

[0029] In this embodiment, the power module includes a 24V DC power supply unit and a power conversion circuit unit. The 24V DC power supply is introduced by the electrical control system of the pipeline high-pressure cleaning vehicle. The power conversion circuit converts the 24V power supply into 5V and 3.3V to power other modules of the intelligent protection device.

[0030] In this embodiment, a Bluetooth module is also included as a backup communication interface. The control module uses a microcontroller with a Bluetooth interface as the main control chip and communicates wirelessly with the smart terminal through the Bluetooth module. In special circumstances, it supports wireless remote control via Bluetooth using a mobile phone, thereby realizing actions such as pressurization and emergency stop.

[0031] In this embodiment, an alarm module is also included. Specifically, the alarm module adopts an audible and visual alarm, which includes an LED indicator and a buzzer. When the detection signal of the detection sensor is abnormal, an audible and visual alarm is triggered.

[0032] The above description only illustrates preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. In short, all changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A backflush protection system for a pipeline high-pressure cleaning vehicle, characterized in that: It includes an anti-backflow safety grid and an intelligent protection device. The anti-backflow safety grid is used to insert a high-pressure water gun and form an anti-backflow protection for the high-pressure water gun. The intelligent protection device is used to connect to the electrical control system of the pipeline high-pressure cleaning vehicle to form an interlock protection for the high-pressure water gun. The anti-backflow safety grid is provided with a sensor mounting position for installing a detection sensor. The detection sensor detects the insertion of the high-pressure water gun and converts it into an electrical signal that is fed back to the intelligent protection device. The intelligent protection device includes a control module, a button module, a display module, a detection sensor, a sensor input module, a relay output module, a switch input module, and a power supply module. The modules are electrically connected. The detection sensor is installed at the sensor mounting position of the anti-backlash safety grid. The control module coordinates and controls the detection and interlocking protection of the high-pressure water gun.

2. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: The intelligent protection device is connected in series with the flushing switch circuit of the pipeline high-pressure cleaning vehicle through the switch contacts of the relay output module to control the pressurization and flushing of the high-pressure water gun.

3. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: The detection sensor is a distance sensor, and the sensor mounting position is located below the cover plate of the anti-recoil safety grid. The sensor input module is a high-precision A / D converter that converts the input voltage of the distance sensor into distance information.

4. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: The relay output module and the digital input module are equipped with expansion interfaces for functional expansion.

5. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 4, characterized in that: The anti-recoil safety grid is equipped with a magnetic door switch for checking whether the anti-recoil safety grid is locked in place. The magnetic door switch is connected through the expansion interface of the switch input module.

6. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 4, characterized in that: The extension interface of the relay output module is connected in series with the electrical control system of the pipeline high-pressure cleaning vehicle for emergency stop control.

7. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: The power module includes a 24V DC power supply unit and a power conversion circuit unit. The 24V DC power supply is introduced by the electrical control system of the pipeline high-pressure cleaning vehicle. The power conversion circuit converts the 24V power supply into 5V and 3.3V to power other modules of the intelligent protection device.

8. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: It also includes a Bluetooth module as a backup communication interface. The control module uses a microcontroller with a Bluetooth interface as the main control chip and communicates wirelessly with the smart terminal through the Bluetooth module.

9. The anti-backflow protection system for pipeline high-pressure cleaning vehicles according to claim 1, characterized in that: It also includes an alarm module, which is an audible and visual alarm module, including LED indicator lights and a buzzer, which provides an audible and visual alarm reminder when the detection signal of the detection sensor is abnormal.

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