Anti-freezing solution spraying system based on distributed network structure

Abstract

The utility model belongs to the technical field of anti-freezing solution spraying, solves the problems that an existing anti-freezing solution spraying system is single in structure, poor in reliability and incapable of meeting various spraying task requirements, and provides an anti-freezing solution spraying system based on a distributed network structure. Comprising a plurality of spraying stations, and more than one spraying device is arranged on each spraying station; the anti-freezing solution station is connected with the anti-freezing solution pipeline; the control system controls the anti-freezing solution station to provide anti-freezing solution for the spraying station to complete the spraying task; the control system comprises a plurality of spraying device PLC controllers, an anti-freezing solution pump station PLC controller, a network switch, an upper computer monitoring station and an engineer station. According to the anti-freezing solution spraying system, a distributed network control structure is adopted, the reliability of the system is improved, the requirement for simultaneous spraying during multiple spraying tasks can be met, and decentralized control, centralized management and flexible and convenient operation are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of antifreeze spraying, and in particular relates to an antifreeze spraying system based on a distributed network structure. Background Art

[0002] The coal loading station in the double-track loading mode uses multiple spraying stations to spray antifreeze. Each spraying station is equipped with two spraying positions, which are controlled by the spraying system to complete the antifreeze spraying task. The existing antifreeze spraying system generally uses a set of PLC controllers to realize the centralized control of multiple spraying stations and all equipment of the antifreeze liquid station. In this system control mode, once the PLC controller fails or is damaged, the entire spraying system will not work, the spraying reliability is poor, and the control risk is high.

[0003] In addition, according to production needs, when multiple spraying stations work at the same time, the spraying pressure and flow requirements of each spraying station are also different. The existing antifreeze spraying system cannot meet the process requirements of multiple spraying stations and has poor spraying flexibility.

[0004] Therefore, it is necessary to develop a spraying system with strong reliability and capable of meeting the requirements of various spraying tasks. Each spraying station can operate independently or multiple stations can work in parallel, with on-site operation and centralized control operation functions. Summary of the invention

[0005] The utility model provides an antifreeze spraying system based on a distributed network structure to solve the problems that the existing antifreeze spraying system has a single structure, poor reliability and cannot meet the requirements of various spraying tasks.

[0006] The utility model adopts the following technical scheme: an antifreeze spraying system based on a distributed network structure, comprising:

[0007] A plurality of spraying stations, each of which is provided with more than one spraying device;

[0008] an antifreeze station, the antifreeze station being connected to the antifreeze pipeline to provide antifreeze to the spraying station;

[0009] A control system, the control system comprising:

[0010] A plurality of spraying device PLC controllers, wherein the spraying device PLC controllers control the spraying devices to spray;

[0011] An antifreeze pump station PLC controller, wherein the antifreeze pump station PLC controller controls the antifreeze station to deliver antifreeze to different spraying devices according to a preset priority level;

[0012] A network switch, the network switch receiving information from a spray device PLC controller and an antifreeze pump station PLC controller;

[0013] A host computer monitoring station, which receives information from the network switch, monitors the spray device PLC controller and the antifreeze pump station PLC controller, and issues an alarm when an error occurs;

[0014] The engineer station outputs control instructions according to the information received by the network switch to control the monitoring spray device PLC controller and the antifreeze pump station PLC controller.

[0015] Furthermore, the spraying device comprises:

[0016] Mechanical system, the mechanical system is controlled by the spraying station PLC controller to complete the antifreeze spraying task;

[0017] The electrical system collects cabin and mechanical system information and transmits it to the control system.

[0018] Furthermore, the mechanical system comprises:

[0019] A column, wherein a lifting cylinder for adjusting the height of the column is provided on the column, and the lifting cylinder is controlled by a PLC controller of the spraying device;

[0020] A rotating arm, which is arranged on the top of the column and driven by a rotating motor to rotate around the column, and the rotating motor is controlled by a spraying device PLC controller;

[0021] The nozzle is arranged at the end of the rotating arm to spray the train. The nozzle is controlled by a solenoid valve, and the solenoid valve is controlled by a PLC controller of the spraying device.

[0022] Furthermore, the electrical system comprises:

[0023] The rear detection electric eye is used to obtain the position information of the carriage;

[0024] The front detection electric eye is used to obtain the front position information of the vehicle;

[0025] Speed ​​radar, used to obtain the driving information of the carriage;

[0026] The spraying device PLC controller receives the information collected by the electrical system, transmits it to the network switch, and then controls the mechanical system to complete the spraying task according to the instructions of the engineering station.

[0027] Furthermore, the rear-end detection electric eye and the front-end detection electric eye are both beam-type photoelectric sensors installed on the inspection platform. The rear-end detection electric eye and the front-end detection electric eye are located on both sides of the rotating arm (4), and each pair of electric eyes is 200 to 400 mm away from the center of the column.

[0028] Furthermore, the antifreeze station is provided with an antifreeze tank, the antifreeze tank is connected to an antifreeze pipeline, and an antifreeze pump is arranged on the antifreeze pipeline.

[0029] Furthermore, the spraying station, the antifreeze station and the control system use the S7 communication protocol to exchange information and data.

[0030] Furthermore, an anti-collision device is provided on the rotating arm.

[0031] Furthermore, the engineer station is provided with a remote module, which transmits instructions to the spray device PLC controller, the antifreeze pump station PLC controller and the host computer monitoring station through wireless communication.

[0032] Furthermore, OPC communication interfaces are provided between the host computer monitoring station and the engineer station and the spraying device PLC controller and the antifreeze liquid pump station PLC controller.

[0033] Compared with the prior art, the beneficial effects of the utility model are:

[0034] 1. Adopting a distributed network control structure, in accordance with the principles of decentralized control, centralized management, flexibility and convenience, by setting up multiple spraying device PLC controllers and antifreeze pump station PLC controllers, each spraying device can work alone or in parallel, solving the problem of the existing antifreeze spraying system with a single structure. Once the controller fails or is damaged, the entire spraying system will not work and have poor reliability;

[0035] 2. The control systems are interconnected through standard industrial Ethernet protocols or special communication protocols to complete functions such as operation, control, two-way data transmission, and data management, thereby reducing the impact of control system failures and improving system reliability and flexibility;

[0036] 3. A remote module is installed at the engineer station, which transmits instructions to the spraying device PLC controller, antifreeze pump station PLC controller and host computer monitoring station through wireless communication to achieve remote online monitoring, modification and debugging of programs, greatly improving work efficiency and convenience;

[0037] 4. A first-in-first-out queue (FIFO) + priority control strategy is adopted to meet the simultaneous loading at multiple stations. When the spraying process adjustment requirements (pressure, flow) of each spraying device are different, the antifreeze pump station PLC controller can respond to the requirements of multiple spraying devices at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the structure of the antifreeze spraying system based on a distributed network structure of the utility model;

[0039] Figure 2This is a schematic diagram of the structure of the control system of the utility model;

[0040] Figure 3 It is a schematic diagram of the mechanical system structure of the utility model;

[0041] Figure 4 It is a schematic diagram of the electrical system structure of the utility model;

[0042] Figure 5 It is a schematic diagram of the pressure and flow demand adjustment of the spraying device of the utility model;

[0043] In the figure: 1. Spraying station; 2. Antifreeze pipeline; 3. Column; 4. Rotating arm; 5. Rotating motor; 6. Spray head; 7. Rear detection electric eye; 8. Front detection electric eye; 9. Speed ​​radar; 10. Antifreeze tank 11. Antifreeze pump. DETAILED DESCRIPTION

[0044] The present invention will be further described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The technical scheme described in the present invention or the technical personnel in the field can design similar technical schemes inspired by the technical scheme of the present invention to achieve the above technical effects, which all fall within the protection scope of the present invention.

[0045] This embodiment provides an antifreeze liquid spraying system based on a distributed network structure, such as Figure 1-2 As shown, including:

[0046] A plurality of spraying stations 1, each of which is provided with more than one spraying device;

[0047] an antifreeze station, the antifreeze station being connected to the antifreeze pipeline 2 to provide antifreeze to the spraying station 1;

[0048] A control system, the control system comprising:

[0049] A plurality of spraying device PLC controllers, wherein the spraying device PLC controllers control the spraying devices to spray;

[0050] An antifreeze pump station PLC controller, wherein the antifreeze pump station PLC controller controls the antifreeze station to deliver antifreeze to different spraying devices according to a preset priority level;

[0051] A network switch, the network switch receiving information from a spray device PLC controller and an antifreeze pump station PLC controller;

[0052] A host computer monitoring station, which receives information from the network switch, monitors the spray device PLC controller and the antifreeze pump station PLC controller, and issues an alarm when an error occurs;

[0053] The engineer station outputs control instructions according to the information received by the network switch to control the monitoring spray device PLC controller and the antifreeze pump station PLC controller.

[0054] The engineer station is responsible for the writing, modification, and debugging of the system control program, and can also perform system operation, monitoring, and alarm functions; the spray device PLC controller, antifreeze pump station PLC controller, host computer monitoring station, and engineer station are respectively connected to the network switch to complete operation, control, two-way data transmission, data management, and other functions.

[0055] The host computer monitoring station and engineer station both use mature, reliable and stable industrial computers dedicated to industrial sites to meet the requirements of industrial site environments. Standard, open and compatible OPC communication interfaces are reserved between the host computer monitoring station, engineer station and the spraying device PLC controller and antifreeze pump station PLC controller to facilitate secondary development in the later stage.

[0056] The network switch is a high-speed, high-reliability industrial network switch that achieves interconnection through standard industrial Ethernet protocols or dedicated communication protocols, reducing the impact of control system failures and improving system reliability and flexibility.

[0057] Each spraying device can work independently or in parallel. Each spraying station and the antifreeze station use a reliable, mature, dedicated, high-speed communication method (S7 communication protocol) for two-way data exchange to achieve information transmission, avoiding the disadvantages of conventional hard wiring signal transmission between the spraying device PLC controller and the antifreeze pump station PLC controller, which is complex, cumbersome and costly.

[0058] Program development engineers use industrial communication remote modules with wireless communication functions at the engineer station, and use wireless connection methods such as 5G, WiFi, and cloud platforms. Through module-specific software, they can realize remote online monitoring, modification, and debugging of programs with each spray device PLC controller, antifreeze pump station PLC controller, engineer station, and host computer monitoring station, greatly improving work efficiency and convenience.

[0059] In some embodiments, the spraying device comprises:

[0060] A mechanical system, wherein the mechanical system is controlled by a PLC controller of a spraying station to complete the antifreeze spraying task;

[0061] The electrical system collects cabin and mechanical system information and transmits it to the control system.

[0062] like Figure 3 As shown, the mechanical system includes:

[0063] A column 3, wherein a lifting cylinder for adjusting the height of the column 3 is provided on the column 3, and the lifting cylinder is controlled by a PLC controller of the spraying device;

[0064] The rotating arm 4 is arranged on the top of the column 3. The height of the column 3 is adjusted by controlling the lifting cylinder according to different vehicle models, thereby adjusting the spraying height of the rotating arm 4. The rotating arm 4 is driven by a rotating motor 5 and rotates around the column 3. The angle can accurately meet 360° rotation. The rotating motor 5 is controlled by the spraying device PLC controller; the rotating arm 4 is provided with an anti-collision device, which can be quickly lifted when the rotating arm 4 collides with the train compartment;

[0065] A spray head 6, which is arranged at the end of the rotating arm 4 to spray the train, and the spray head 6 is controlled by a solenoid valve, and the solenoid valve is controlled by a spray device PLC controller;

[0066] like Figure 4 As shown, the electrical system includes:

[0067] The rear detection electric eye 7 is used to obtain the position information of the carriage;

[0068] The vehicle head detection electric eye 8 is used to obtain the vehicle head position information;

[0069] Speed ​​radar 9, used to obtain the driving information of the carriage;

[0070] The rear detection electric eye 7 and the front detection electric eye 8 are both photoelectric sensors installed on the maintenance platform, which are responsible for detecting the position of the carriage and the front of the car, and are used to obtain the position information of the carriage and the front of the car. When a carriage passes the rear detection electric eye 7 and the front detection electric eye 8, a signal to open the solenoid valve is issued, and the nozzle 6 performs the antifreeze spraying task; when the two carriages are detected in the neutral position, the rear detection electric eye 7 sends a signal to close the solenoid valve, and the PLC controller of the spraying device controls the solenoid valve to close the nozzle 6 and stop spraying. The two pairs of electric eyes are located on both sides of the rotating arm 4, and each pair of electric eyes is 200 to 400 mm away from the center of the column 3. By adjusting the installation position of the electric eye and the rotating arm 4, the spraying angle of the nozzle 6 can be controlled to avoid spraying outside the carriage or spraying inadequately.

[0071] The speed radar 9 collects the train speed signal for obtaining the carriage travel information; once the train stops or reverses due to waiting for coal during loading, the speed radar 9 sends a stop spraying signal to the spraying device PLC controller, which sends a signal to close the solenoid valve.

[0072] The spraying device PLC controller receives the information collected by the electrical system, transmits it to the network switch, and then controls the mechanical system to complete the spraying task according to the instructions of the engineering station.

[0073] In some embodiments, Figure 1 and Figure 4 As shown, the antifreeze station is provided with an antifreeze tank 10 , which is connected to the antifreeze pipeline 2 to provide antifreeze for the spraying station 1 ; an antifreeze pump 11 is provided on the antifreeze pipeline 2 .

[0074] According to the antifreeze spraying requirements of the railway department, the pressure and flow of the antifreeze spraying at the work site must be dynamically adjusted according to the moisture content of the coal type and the ambient temperature to ensure that the vehicle does not freeze. The operator selects the preset antifreeze pressure, spraying volume and other working parameters on the upper computer control interface according to the type of vehicle being loaded, the moisture content of the coal type, and the ambient temperature along the loading and unloading site. The antifreeze spraying pressure and spraying volume are linearly proportional to the moisture content of the coal type and the ambient temperature, and can be adjusted manually according to actual conditions. The requirements for railway antifreeze vehicle spraying of the antifreeze spraying system are shown in Table 1 below (unit KG / T)

[0075] Table 1 Antifreeze spraying system Railway antifreeze vehicle spraying requirements

[0076]

[0077] When there are multiple stations loading at the same time, the spraying process adjustment requirements (pressure, flow) of each spraying device are different. The spraying device PLC controller adopts the first-in first-out queue (FIFO) + priority control strategy to meet the process requirements of multiple spraying devices spraying at the same time. Figure 5 As shown, the operator pre-assigns priorities to the spraying devices according to the process requirements, from high to low 1-n. When the antifreeze pump station PLC controller receives adjustment instructions for multiple spraying devices, it first compares the priorities of each spraying device, and stores the adjustment instruction data of the spraying device in the storage area data table set in the internal memory of the antifreeze pump station PLC controller CPU according to the priority. The data in the data table uses the first-in-first-out (FIFO) control strategy to send the first stored data in the data table to the pressure and flow control adjustment unit in the antifreeze pump station PLC controller, and the adjustment requirements of multiple spraying devices are executed in sequence. If the priority settings of each spraying device are the same, the antifreeze pump station PLC controller will output to the pressure and flow adjustment unit according to the preset fixed setting value.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An antifreeze spraying system based on a distributed network structure, characterized in that: include: A plurality of spraying stations (1), each of the spraying stations (1) being provided with more than one spraying device; an antifreeze station, the antifreeze station being connected to the antifreeze pipeline (2) and providing antifreeze to the spraying station (1); A control system, the control system comprising: A plurality of spraying device PLC controllers, wherein the spraying device PLC controllers control the spraying devices to spray; An antifreeze pump station PLC controller, wherein the antifreeze pump station PLC controller controls the antifreeze station to deliver antifreeze to different spraying devices according to a preset priority level; A network switch, the network switch receiving information from a spray device PLC controller and an antifreeze pump station PLC controller; A host computer monitoring station, which receives information from the network switch, monitors the spray device PLC controller and the antifreeze pump station PLC controller, and issues an alarm when an error occurs; The engineer station outputs control instructions according to the information received by the network switch to control the monitoring spray device PLC controller and the antifreeze pump station PLC controller.

2. The antifreeze liquid spraying system based on a distributed network structure according to claim 1, characterized in that: The spraying device comprises: Mechanical system, the mechanical system is controlled by the spraying station PLC controller to complete the antifreeze spraying task; The electrical system collects cabin and mechanical system information and transmits it to the control system.

3. The antifreeze spraying system based on a distributed network structure according to claim 2, characterized in that: The mechanical system comprises: A column (3), wherein the column (3) is provided with a lifting cylinder for adjusting the height of the column (3), and the lifting cylinder is controlled by a PLC controller of the spraying device; A rotating arm (4), wherein the rotating arm (4) is arranged on the top of the column (3), the rotating arm (4) is driven by a rotating motor (5) to rotate around the column (3), and the rotating motor (5) is controlled by a spraying device PLC controller; A spray head (6) is arranged at the end of the rotating arm (4) to spray the train, and the spray head (6) is controlled by a solenoid valve, and the solenoid valve is controlled by a PLC controller of the spray device.

4. The antifreeze liquid spraying system based on a distributed network structure according to claim 3 is characterized in that: The electrical system comprises: The rear detection electric eye (7) is used to obtain the position information of the carriage; A vehicle head detection electric eye (8) is used to obtain vehicle head position information; A speed radar (9) for obtaining the driving information of the carriage; The spraying device PLC controller receives the information collected by the electrical system, transmits it to the network switch, and then controls the mechanical system to complete the spraying task according to the instructions of the engineering station.

5. The antifreeze liquid spraying system based on a distributed network structure according to claim 4 is characterized in that: The rear-end detection electric eye (7) and the front-end detection electric eye (8) are both beam-type photoelectric sensors installed on the maintenance platform. The rear-end detection electric eye (7) and the front-end detection electric eye (8) are located on both sides of the rotating arm (4), and each pair of electric eyes is 200 to 400 mm away from the center of the column (3).

6. The antifreeze liquid spraying system based on a distributed network structure according to claim 1, characterized in that: The antifreeze station is provided with an antifreeze tank (10), the antifreeze tank (10) is connected to an antifreeze pipeline (2), and an antifreeze pump (11) is provided on the antifreeze pipeline (2).

7. The antifreeze liquid spraying system based on a distributed network structure according to claim 1, characterized in that: The spraying station (1), the antifreeze liquid station and the control system use the S7 communication protocol to exchange information and data.

8. The antifreeze liquid spraying system based on a distributed network structure according to claim 3 is characterized in that: The rotating arm (4) is provided with an anti-collision device.

9. The antifreeze liquid spraying system based on a distributed network structure according to claim 1, characterized in that: The engineer station is provided with a remote module, which transmits instructions to the spraying device PLC controller, the antifreeze pump station PLC controller and the host computer monitoring station through wireless communication.

10. The antifreeze liquid spraying system based on a distributed network structure according to claim 1, characterized in that: OPC communication interfaces are provided between the host computer monitoring station and the engineer station and the spraying device PLC controller and the antifreeze liquid pump station PLC controller.

Images