Power distribution control cabinet framework and skid-mounted refueling PLC control system

Abstract

The utility model discloses a power distribution control cabinet framework and a skid-mounted refueling PLC control system. Comprising an explosion-proof control cabinet body, a PLC control module arranged in the explosion-proof control cabinet body, an explosion-proof control button arranged on the outer wall of the explosion-proof control cabinet body, a scram button, a liquid crystal display screen, an explosion-proof control switch, an explosion-proof indicating lamp, an explosion-proof touch pad mouse and an explosion-proof audible and visual alarm, wherein the explosion-proof touch pad mouse and the explosion-proof audible and visual alarm are arranged on the outer side portion of the explosion-proof control cabinet body. The explosion-proof control button, the scram button, the explosion-proof control switch, the liquid crystal display screen, the explosion-proof indicating lamp, the explosion-proof touch pad mouse and the explosion-proof audible and visual alarm are respectively connected with the PLC control module through circuits. The technical problem of low automation degree of a skid-mounted control system architecture in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of skid-mounted refueling automation, and in particular to a power distribution control cabinet architecture and a skid-mounted refueling PLC control system. Background Art

[0002] Fuel supply security at general aviation airports is a crucial support and prerequisite for the stable operation of general aviation. Currently, general aviation airports use fuel in a wide range of locations, with small volumes, diverse types, and strong seasonality, making it difficult to fully develop a fuel supply security system.

[0003] As a new type of mobile refueling equipment, skid-mounted refueling systems (hereinafter referred to as skid-mounted systems) are playing an increasingly important role in aviation fuel supply support. They primarily consist of a series of equipment, including oil storage tanks, filter separators, oil pumps for receiving and dispatching, flow meters, refueling dispensers, and power distribution cabinets, fulfilling three major functions: receiving and dispatching, storage, and refueling. Currently, to meet different operational requirements and installation environments, skid-mounted systems can be categorized by storage medium into gasoline (diesel) skids, gas (CNG / LNG / LPG) skids, and aviation fuel (kerosene / aviation gasoline) skids. Based on their functional configuration, they can be divided into oil depot-type, gas station-type, and simple-type systems.

[0004] For each of the above-mentioned skid-mounted vehicles, the control equipment in their operation and control architecture is all powered by a power distribution cabinet, and the actuators are all powered by the power distribution cabinet. The monitoring equipment display terminal is usually installed in the central control room or for local display. However, there is generally no PLC automatic and interlocking control between the monitoring equipment itself and the power distribution cabinet. As a result, these types of skid-mounted vehicles still have at least the following disadvantages compared to traditional tank / pipeline fueling trucks at airports:

[0005] 1) During skid-mounted operations, the labor intensity of operators is high;

[0006] The skid-mounted valves are manually opened or closed. Operators must manually open or close different pipeline valves during oil receiving / shipping, tank emptying, and oil return operations according to the current workflow. Many valves need to be opened or closed, and most main pipeline valves are flat gate valves. This makes valve opening and closing during switching workflows cumbersome, time-consuming, and labor-intensive. After the operation is completed, operators must manually close all open valves in accordance with skid-mounted safety management requirements, further increasing operational difficulty.

[0007] 2) The power distribution cabinet only has the power supply function, and does not have PLC automatic and interlocking control with monitoring equipment and actuators;

[0008] Currently, the power distribution cabinet within the skid-mounted system is only responsible for providing power to electrical equipment such as the oil pump, return oil pump, explosion-proof lights / fans, and electric heating. The specific functions of these electrical equipment are still manually controlled by operators based on operational needs and environmental conditions. Furthermore, because the power distribution cabinet lacks PLC automatic and interlocking control with monitoring equipment and actuators, the skid-mounted system cannot implement automatic control functions such as one-touch oil delivery, quantitative oil delivery, interlocking of static grounding alarms with oil delivery, and automatic heating at low temperatures. This limited functionality increases safety risks associated with skid-mounted operations and prevents automation and simplification of operational processes.

[0009] 3) The integration level of the skid-mounted control system architecture is not high;

[0010] The current skid-mounted control system architecture consists of a combustible gas alarm system, a mezzanine leakage alarm system, a liquid level meter system, etc. Each system has different functions, and the display terminals of the combustible gas alarm system, the mezzanine leakage alarm system, and the liquid level meter system need to be installed separately in the central control room. At the same time, each display terminal needs to be separately connected to the corresponding detector or sensor inside the skid through a signal line. As a result, when laying the skid-mounted signal cables, a large number of pre-buried lines are required, which greatly increases the construction difficulty and engineering workload. Utility Model Content

[0011] To this end, the present invention provides a power distribution control cabinet architecture and a skid-mounted refueling PLC control system to solve the above-mentioned technical problems existing in the prior art regarding the skid-mounted control system architecture.

[0012] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0013] A power distribution control cabinet architecture, comprising:

[0014] Explosion-proof control cabinet, PLC control module, explosion-proof control button, emergency stop button, LCD display, explosion-proof control switch, explosion-proof indicator light, explosion-proof touch panel mouse and explosion-proof sound and light alarm;

[0015] The PLC control module is fixedly mounted inside the explosion-proof control cabinet;

[0016] The explosion-proof control button, the emergency stop button, the liquid crystal display, the explosion-proof control switch and the explosion-proof indicator light are respectively fixedly mounted on the outer wall of the explosion-proof control cabinet;

[0017] The explosion-proof control button, the emergency stop button, and the explosion-proof control switch are respectively connected to the control input end of the PLC control module through a circuit, and the liquid crystal display and the explosion-proof indicator light are respectively connected to the control output end of the PLC control module through a circuit;

[0018] The explosion-proof touchpad mouse and the explosion-proof sound and light alarm are respectively extended and fixedly assembled on the outer side of the explosion-proof control cabinet, and the explosion-proof touchpad mouse is connected to the control input end of the PLC control module inside the explosion-proof control cabinet through an isolation seal and an explosion-proof winding pipe through a circuit, and the explosion-proof sound and light alarm is connected to the control output end of the PLC control module inside the explosion-proof control cabinet through an isolation seal and an explosion-proof winding pipe through a circuit.

[0019] On the basis of the above technical solution, the present invention is further described as follows:

[0020] As a further solution of the present invention,

[0021] The explosion-proof control switches include power supply line explosion-proof control switches, surge protector explosion-proof control switches, and oil pump, explosion-proof fan, explosion-proof lamp, and heating wire loop explosion-proof control switches;

[0022] The outer wall of the explosion-proof control cabinet is also equipped with a power supply inlet terminal, a monitoring equipment wiring port, an actuator wiring port and a remote signal line wiring port. The PLC control module is connected to the external power supply through the real-time power supply inlet terminal. At the same time, the real-time monitoring equipment wiring port, the real-time actuator wiring port and the real-time remote signal line wiring port are used to connect the PLC control module to the monitoring equipment, the actuator and the remote signal line through the isolation seal, the explosion-proof winding pipe and the galvanized steel pipe.

[0023] A skid-mounted refueling PLC control system includes the above-mentioned power distribution control cabinet architecture.

[0024] As a further solution of the present invention,

[0025] The monitoring equipment includes a level meter for the oil storage tank, a pressure sensor for the oil storage tank, a pipeline pressure sensor, a sandwich leakage sensor, a level alarm for the quality inspection tank, a flow meter, an ambient temperature sensor, an oil and gas concentration detector, and an electrostatic grounding alarm;

[0026] The oil receiving / dispatching pipeline valves, tank dumping pipeline valves, and oil return pipeline valves in the actuator are all configured as electronically controlled pipeline valves;

[0027] The explosion-proof indicator light includes a green indicator light for indicating the start status of each function and a red indicator light for indicating the shutdown status of each function; the explosion-proof control button includes a start control button for controlling the start of each function and a stop control button for controlling the stop of each function.

[0028] As a further solution of the present invention,

[0029] The skid-mounted refueling PLC control system also includes a basic oil receiving / issuing function component and a quantitative oil receiving / issuing function component;

[0030] The basic oil receiving / discharging functional component includes an electrically controlled oil receiving / discharging pipeline valve and an electrically controlled oil receiving / discharging pump connected thereto, wherein the electrically controlled oil receiving / discharging pipeline valve and the electrically controlled oil receiving / discharging pump are respectively connected to the control output end of the PLC control module via an electrical circuit;

[0031] The quantitative oil receiving / discharging functional component includes the basic oil receiving / discharging functional component and a flow meter. The flow meter is connected to the oil receiving / discharging pipeline valve in the basic oil receiving / discharging functional component, and the flow meter is connected to the control input end of the PLC control module through a circuit.

[0032] As a further solution of the present invention,

[0033] The skid-mounted refueling PLC control system also includes a tank dumping function component and an oil return function component;

[0034] The tank emptying function component includes the electrically controlled oil receiving / discharging pump and a tank emptying pipeline valve connected thereto. The tank emptying pipeline valve is connected to the control output end of the PLC control module via an electrical circuit. The tank emptying function is turned on and off by the PLC control module in conjunction with the control button, thereby completing the electrically controlled opening and closing of the valve and the pump body based on the opening and closing actions of the control button.

[0035] The oil return function component includes a quality inspection tank liquid level alarm, which is connected to the PLC control module through a circuit. When the oil at the bottom of the oil storage tank is discharged into the quality inspection tank, the liquid level alarm is installed in the quality inspection tank, and the liquid level alarm is used to monitor the internal liquid level of the quality inspection tank in real time, and to issue an audible and visual alarm when the liquid level is high or low. The oil return function component also includes a return oil pipeline valve and a return oil pump. The return oil pipeline valve and the return oil pump are respectively connected to the control output end of the PLC control module through a circuit, so that when the oil discharged into the quality inspection tank flows back to the oil storage tank through the filter separator, the return oil pipeline valve is installed in the pipeline between the quality inspection tank and the filter separator, thereby completing the electric control opening and closing of the valve and the pump body through the PLC control module and the control button.

[0036] As a further solution of the present invention,

[0037] The skid-mounted refueling PLC control system also includes a high / low liquid level pump stop interlock control function component, an electrostatic grounding alarm and oil receiving / sending operation interlock function component, and an oil and gas concentration monitoring and ventilation operation interlock function component;

[0038] The high / low liquid level pump stop interlock control function component includes the basic oil receiving / sending function component, a liquid level meter, an explosion-proof sound and light alarm installed in the explosion-proof control cabinet, and a central control room sound and light alarm. The liquid level meter is installed inside the oil storage tank, and the liquid level meter is connected to the control input end of the PLC control module through a circuit. The explosion-proof sound and light alarm and the central control room sound and light alarm are respectively connected to the control output end of the PLC control module through a circuit.

[0039] The electrostatic grounding alarm and oil receiving / dispensing operation interlocking functional component includes the basic oil receiving / dispensing functional component, an electrostatic grounding alarm, an explosion-proof sound and light alarm installed in the explosion-proof control cabinet, and an sound and light alarm in the central control room. During each oil receiving / dispensing operation, the electrostatic clamp attached to the electrostatic grounding alarm is connected to the oil tanker, tanker truck, or general aviation aircraft, and the electrostatic grounding alarm is connected to the control input end of the PLC control module via an electrical circuit.

[0040] The oil and gas concentration monitoring and ventilation operation interlocking functional component includes an oil and gas concentration detector and an explosion-proof fan; the oil and gas concentration detector is connected to the control input end of the PLC control module through a circuit, and the explosion-proof fan is connected to the control output end of the PLC control module through a circuit.

[0041] As a further solution of the present invention,

[0042] The skid-mounted refueling PLC control system also includes a low-temperature automatic heating function component, an oil tank interlayer leakage automatic alarm function component, and an overpressure monitoring automatic alarm function component;

[0043] The low-temperature automatic heating functional component includes an ambient temperature sensor and a heating cable. The temperature sensor is connected to the control input end of the PLC control module via a circuit. The heating cable is installed on the skid-mounted sewage pipeline and is connected to the control output end of the PLC control module via a circuit. The skid-mounted ambient temperature is monitored in real time by the ambient temperature sensor.

[0044] The oil tank interlayer leakage automatic alarm function component includes an interlayer leakage sensor, which is installed in the inner and outer tank interlayers of the double-layer oil tank, and the interlayer leakage sensor is connected to the control input end of the PLC control module through an electrical circuit;

[0045] The overpressure monitoring automatic alarm function component includes an oil tank pressure sensor for monitoring the internal pressure of the oil tank and a pipeline pressure sensor for monitoring the pressure of the skid-mounted pipeline. The two sets of pipeline pressure sensors are respectively connected to the control input end of the PLC control module through a circuit;

[0046] As a further solution of the present invention,

[0047] The skid-mounted refueling PLC control system also includes a skid-mounted operating parameter processing functional component;

[0048] The skid-mounted operating parameter processing functional component is used for collecting, displaying, alarming and transmitting skid-mounted operating parameters. It includes a monitoring device, an LCD display, a signal line and an optical fiber component that are connected to the PLC control module through a circuit. The skid-mounted operating parameters are collected in real time through the monitoring device.

[0049] As a further solution of the present invention,

[0050] The skid-mounted refueling PLC control system also includes an emergency stop function component;

[0051] The emergency stop function component includes an emergency stop button arranged between the power supply output terminal and the PLC control module. By operating the emergency stop button, the power supply of the entire skid can be directly cut off.

[0052] The utility model has the following beneficial effects:

[0053] 1. This architecture integrates the skid-mounted power distribution function, PLC automatic and interlocking control function, and operating parameter collection, display, alarm, and transmission functions into the explosion-proof control cabinet body 1, thereby automating, simplifying, and securing the skid-mounted operation process. This ensures the automatic control function and automatic emergency stop function of the skid-mounted production operation, significantly reducing the labor intensity of operators and improving the safety of skid-mounted operation. It also effectively enhances the integration level of the skid-mounted control system, reduces the number of pre-buried signal lines, construction difficulty, and engineering workload, and improves the skid-mounted production safety management level and the operating efficiency of operators.

[0054] 2. The skid-mounted refueling device can effectively realize real-time monitoring of skid-mounted operating parameters, including liquid level, pressure, flow rate and other parameters, as well as alarm signals such as interlayer leakage, combustible gas concentration, and static grounding. It can also issue audible and visual alarms in a timely manner based on the monitoring situation, thus realizing fully automatic, all-day and all-weather monitoring of skid-mounted operation and improving the safety management level of skid-mounted equipment.

[0055] 3. The skid-mounted refueling device can effectively realize the automation, simplification and safety of skid-mounted operations; it can realize automatic control functions and emergency stop functions such as one-touch oil collection / discharge, quantitative oil collection / discharge, high / low liquid level pump stop interlocking control, static grounding alarm and oil collection / discharge operation interlocking, oil and gas concentration monitoring and ventilation operation interlocking, low-temperature automatic heating operation, overpressure monitoring automatic alarm, etc., which significantly reduces the labor intensity of operators and avoids safety accidents such as leakage, evaporation, and explosion caused by weather changes and human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the implementation methods or the description of the prior art. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0057] Figure 1 This is a front view structural diagram of the power distribution control cabinet architecture provided by an embodiment of the utility model.

[0058] Figure 2 A side structural diagram of the power distribution control cabinet architecture provided by an embodiment of the utility model.

[0059] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0060] Explosion-proof control cabinet 1; explosion-proof control button 2; emergency stop button 3; LCD display 4;

[0061] Explosion-proof control switch 5: power supply line explosion-proof control switch 51; surge protector explosion-proof control switch 52; oil pump, explosion-proof fan, explosion-proof lamp, heating cable loop explosion-proof control switch 53;

[0062] Explosion-proof indicator light 6; explosion-proof touchpad mouse 7; explosion-proof sound and light alarm 8;

[0063] Power supply input terminal 9; wiring port 10. DETAILED DESCRIPTION

[0064] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0065] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0066] like Figures 1 to 2 As shown, the embodiment of the present invention provides a power distribution control cabinet architecture, including an explosion-proof control cabinet body 1, a PLC control module, a power distribution function component, an explosion-proof control button 2, an emergency stop button 3, a liquid crystal display 4, an explosion-proof control switch 5, an explosion-proof indicator light 6, an explosion-proof touchpad mouse 7 and an explosion-proof sound and light alarm 8, which is used to integrate the skid-mounted power distribution function, PLC automatic and interlocking control function, and operation parameter processing function into the explosion-proof control cabinet body 1, thereby realizing the automation, simplification and safety of the skid-mounted operation process, ensuring the automatic control function and automatic emergency stop function of the skid-mounted production operation, significantly reducing the labor intensity of the operators, and improving the safety of the skid-mounted operation. At the same time, it can effectively improve the integration level of the skid-mounted control system, reduce the number of pre-buried signal lines, the difficulty of construction and the amount of engineering work, and significantly improve the skid-mounted production safety management level and the operating efficiency of the operators. The specific settings are as follows:

[0067] Please refer to Figure 1 The PLC control module is fixedly assembled inside the explosion-proof control cabinet body 1; the explosion-proof control button 2, the emergency stop button 3, the LCD display 4, the explosion-proof control switch 5 and the explosion-proof indicator light 6 are respectively fixedly assembled on the outer wall of the explosion-proof control cabinet body 1; wherein, the explosion-proof control button 2 and the emergency stop button 3 are respectively connected to the control input end of the PLC control module through a circuit, and the explosion-proof control switch 5 includes but is not limited to the power supply line explosion-proof control switch 51 and the surge protector explosion-proof control switch 52 and the oil pump, explosion-proof fan, explosion-proof lamp, and heating wire loop explosion-proof control switch 53, and the LCD display 4 and the explosion-proof indicator light 6 are respectively connected to the control output end of the PLC control module through a circuit, so as to realize automated integrated monitoring control and real-time display, thereby improving the automation level of the overall architecture.

[0068] The power distribution function components are installed inside the explosion-proof control cabinet body 1, and the power distribution function components include but are not limited to fuses, circuit breakers, AC contactors, thermal relays, surge protectors, and leakage circuit breakers respectively connected to the PLC control modules through circuits, so as to effectively complete the established power distribution functions and monitoring and control functions based on the explosion-proof control cabinet body 1 through the power distribution function components.

[0069] The explosion-proof touchpad mouse 7 and the explosion-proof sound and light alarm 8 are respectively extended and fixedly assembled on the outer side of the explosion-proof control cabinet body 1, and the explosion-proof touchpad mouse 7 is connected to the control input end of the PLC control module inside the explosion-proof control cabinet body 1 through an isolation seal and an explosion-proof winding pipe through a circuit, and the explosion-proof sound and light alarm 8 is connected to the control output end of the PLC control module inside the explosion-proof control cabinet body 1 through an isolation seal and an explosion-proof winding pipe through a circuit.

[0070] Please continue to refer to Figure 1 The outer wall of the explosion-proof control cabinet body 1 is also equipped with a power supply inlet terminal, a monitoring equipment wiring port, an actuator wiring port and a remote signal line wiring port, so as to connect the PLC control module to the external power supply through the power supply inlet terminal. At the same time, the monitoring equipment wiring port, the actuator wiring port and the remote signal line wiring port can be used to connect the PLC control module to the monitoring equipment, the actuator and the remote signal line through the isolation seal, the explosion-proof winding pipe and the galvanized steel pipe respectively.

[0071] The present invention also provides a skid-mounted refueling PLC control system including the above-mentioned power distribution control cabinet architecture. The skid-mounted refueling PLC control system also includes a basic oil receiving / issuing function component, a quantitative oil receiving / issuing function component, a tank emptying function component, an oil return function component, a high / low liquid level pump stop interlocking control function component, an electrostatic grounding alarm and oil receiving / issuing operation interlocking function component, an oil and gas concentration monitoring and ventilation operation interlocking function component, a low-temperature automatic heating function component, an interlayer leakage automatic alarm function component, an overpressure monitoring automatic alarm function component, a skid-mounted operation parameter processing function component, and an emergency stop function component. The above-mentioned components are coordinated to realize automatic real-time monitoring of skid-mounted operation parameters, thereby improving the skid-mounted safety management level and further realizing the automation, simplification, and safety of skid-mounted operations. The specific settings are as follows:

[0072] The monitoring equipment includes an oil tank level meter, an oil tank pressure sensor, a pipeline pressure sensor, an interlayer leakage sensor, a quality inspection tank level alarm, a flow meter, an ambient temperature sensor, an oil and gas concentration detector, and an electrostatic grounding alarm; at the same time, the oil receiving / sending pipeline valves, the tank emptying pipeline valves, and the oil return pipeline valves in the actuator are all set to be electronically controlled.

[0073] The explosion-proof indicator light 6 includes a green indicator light for indicating the start status of each function and a red indicator light for indicating the shutdown status of each function; the explosion-proof control button 2 includes a start control button for controlling the start of each function and a stop control button for controlling the stop of each function.

[0074] The basic oil receiving / discharging function component includes an electrically controlled oil receiving / discharging pipeline valve and an electrically controlled oil receiving / discharging pump, each of which is connected to the control output end of the PLC control module via an electrical circuit, so as to activate and deactivate the oil receiving / discharging function in conjunction with a control button of the PLC control module, thereby realizing electrically controlled automatic opening and closing of the valve and pump body.

[0075] The quantitative oil receiving / dispensing function component includes the basic oil receiving / dispensing function component and a flow meter. The flow meter is connected to the oil receiving / dispensing pipeline valve in the basic oil receiving / dispensing function component, and the flow meter is connected to the control input end of the PLC control module via a circuit. It is used to start and close the quantitative oil receiving / dispensing function through the control button of the PLC control module, and to quantitatively input the oil receiving / dispensing amount through the explosion-proof touch panel mouse 7. In this way, the valve and pump body are automatically opened and closed electrically based on real-time monitoring by the flow meter.

[0076] The tank pouring function component includes the electronically controlled oil receiving / discharging pump and the tank pouring pipeline valve connected to it. The tank pouring pipeline valve is connected to the control output end of the PLC control module through a circuit, so as to cooperate with the control button to start and close the tank pouring function through the PLC control module, and then complete the electronically controlled opening and closing of the valve and pump body based on the opening and closing actions of the control button.

[0077] The oil return function component includes a quality inspection tank liquid level alarm, which is connected to the PLC control module through a circuit. When the oil at the bottom of the oil storage tank is discharged into the quality inspection tank, the liquid level alarm is installed in the quality inspection tank, and the liquid level alarm is used to monitor the internal liquid level of the quality inspection tank in real time, and to issue an audible and visual alarm when the liquid level is high or low; the oil return function component also includes a return oil pipeline valve and a return oil pump. The return oil pipeline valve and the return oil pump are respectively connected to the control output end of the PLC control module through a circuit. When the oil discharged into the quality inspection tank flows back to the oil storage tank through the filter separator, the return oil pipeline valve is installed in the pipeline between the quality inspection tank and the filter separator, thereby completing the electric control opening and closing of the valve and the pump body through the PLC control module and the control button.

[0078] The high / low liquid level pump stop interlock control function component includes the basic oil receiving / discharging function component, a liquid level meter, an explosion-proof sound and light alarm 8 installed in the explosion-proof control cabinet body 1, and a central control room sound and light alarm. The liquid level meter is installed inside the oil storage tank, and the liquid level meter is connected to the control input end of the PLC control module through a circuit. The explosion-proof sound and light alarm 8 and the central control room sound and light alarm are respectively connected to the control output end of the PLC control module through a circuit. During the oil receiving / discharging operation and tank emptying operation, when the liquid level meter monitors the oil level in the oil storage tank in real time and reaches the high / low liquid level alarm value, the PLC control module outputs a control instruction to the sound and light alarm to simultaneously issue a sound and light alarm at the skid-mounted site and the central control room. At the same time, the PLC control module sends an automatic shutdown instruction to the basic oil receiving / discharging function component, thereby realizing automatic control and avoiding safety accidents such as oil tank overflow and emptying.

[0079] The electrostatic grounding alarm and oil receiving / dispensing operation interlocking functional component includes the basic oil receiving / dispensing functional component, an electrostatic grounding alarm, an explosion-proof sound and light alarm 8 installed in the explosion-proof control cabinet body 1, and an sound and light alarm in the central control room. During each oil receiving / dispensing operation, the electrostatic clamp attached to the electrostatic grounding alarm is connected to the oil tanker, tanker truck or general aviation aircraft, and the electrostatic grounding alarm is connected to the control input end of the PLC control module through a circuit, so as to monitor the connection status of the electrostatic clamp in real time through the electrostatic grounding alarm. It can timely detect the detachment of the electrostatic clamp during the operation, and the PLC control module outputs a control instruction to the sound and light alarm to simultaneously issue an sound and light alarm at the skid-mounted site and in the central control room. At the same time, the PLC control module issues an automatic shutdown instruction to the basic oil receiving / dispensing functional component, thereby realizing overall automated control, effectively preventing safety accidents such as static fires caused by excessive electrostatic voltage difference between the skid-mounted device and the oil tanker, tanker truck or general aviation aircraft, and improving operation safety.

[0080] The oil and gas concentration monitoring and ventilation operation interlocking functional components include an oil and gas concentration detector and an explosion-proof fan. The oil and gas concentration detector is connected to the control input end of the PLC control module via a circuit, and the explosion-proof fan is connected to the control output end of the PLC control module via a circuit, so as to monitor the combustible gas concentration in the skid-mounted site environment in real time through the oil and gas concentration detector; when an oil escape, bubble, drip or leak accident occurs in the skid, the oil and gas concentration detector will detect the oil vapor dispersed in the air, and then the PLC control module will output a control instruction to the sound and light alarm to simultaneously issue an sound and light alarm at the skid-mounted site and the central control room. At the same time, the PLC control module will issue a start-up instruction to the explosion-proof fan to accelerate the air circulation in the skid-mounted site area to avoid safety accidents such as poisoning of personnel, fire and explosion.

[0081] The low-temperature automatic heating functional component includes an ambient temperature sensor and a heating wire. The temperature sensor is connected to the control input end of the PLC control module via a circuit. The heating wire is installed in the skid-mounted sewage pipeline, and the heating wire is connected to the control output end of the PLC control module via a circuit. It is used to monitor the skid-mounted ambient temperature in real time through the ambient temperature sensor. When the skid-mounted ambient temperature is lower than the warning value, the PLC control module supplies power to the heating wire, so that the heating wire is powered to heat the sewage pipeline and automatically heats and insulates it to prevent water accumulation in the pipeline from freezing due to low temperature and blocking the pipeline, thereby affecting the skid-mounted production operation. When the skid-mounted ambient temperature is higher than the warning value, the PLC control module stops supplying power to the heating wire.

[0082] The interlayer leakage automatic alarm function component includes an interlayer leakage sensor, which is installed in the interlayer of the inner and outer tanks of the double-layer oil storage tank, and the interlayer leakage sensor is connected to the control input end of the PLC control module through a circuit; when the inner tank of the oil storage tank leaks, the oil will leak into the interlayer of the inner and outer tanks of the oil storage tank, and the interlayer leakage sensor will detect the oil vapor in the interlayer, and then the PLC control module will output a control instruction to the sound and light alarm, and the sound and light alarm will be issued simultaneously at the skid-mounted site and the central control room, prompting the operating personnel to check the integrity of the tank wall of the oil storage tank in time and take safety measures as soon as possible to prevent safety accidents such as oil leakage.

[0083] The overpressure monitoring automatic alarm function component includes an oil tank pressure sensor for monitoring the internal pressure of the oil tank and a pipeline pressure sensor for monitoring the pressure of the skid-mounted pipeline. The two groups of pipeline pressure sensors are respectively connected to the control input ends of the PLC control module through circuits, so as to monitor the pressure of the skid-mounted oil tank and its pipeline in real time through the two groups of pressure sensors. When the monitored values ​​of the skid-mounted oil tank and / or skid-mounted pipeline are higher than the warning values, the PLC control module outputs a control instruction to the sound and light alarm device, which simultaneously sends out sound and light alarms at the skid-mounted site and the central control room, prompting operators to check pipeline pressure relief safety valves, fire-arresting breathing valves and other equipment to prevent safety accidents such as equipment damage and oil leakage caused by overpressure.

[0084] The skid-mounted operating parameter processing functional component is used for collecting, displaying, alarming and transmitting skid-mounted operating parameters. It includes a monitoring device, a liquid crystal display 4, a signal line and an optical fiber component connected to the PLC control module via a circuit. The skid-mounted operating parameters are collected in real time by the monitoring device and presented to on-site operators via the liquid crystal display 4 to facilitate the safe management of the skid. At the same time, the above parameters are transmitted to the central control room via a 485 signal line or an optical fiber component, thereby realizing fully automatic, all-day and all-weather monitoring of the skid-mounted operation status, especially when there is no one on site at night or in severe weather such as heavy rain.

[0085] The emergency stop function component includes an emergency stop button arranged on the output side of the power supply. When a sudden safety accident occurs during the production operation of the skid, the emergency stop button can be operated to quickly cut off the power supply of the entire skid and forcibly stop the current production operation, thereby avoiding the occurrence of a safety accident.

[0086] The control application method of the skid-mounted refueling PLC control system specifically includes the following steps:

[0087] The power supply is supplied to the monitoring equipment and actuators in the skid through the power distribution control cabinet structure, and the skid-mounted operating parameters are collected and displayed, and then transmitted to the central control room through 485 signal lines or optical fiber components;

[0088] The operator activates the corresponding control button according to the needs of the production operation, the indicator light comes on, and one or more actuators are automatically started and stopped at the same time by electronic control to complete different operation processes;

[0089] During skid-mounted operation, when a monitored parameter exceeds the pre-set warning value of the PLC control module, the PLC control module outputs a control instruction to sound and light alarms on site and in the central control room, and activates one or more actuators according to the automatic and interlocking control programs preset by the PLC control module to eliminate the impact and hazards caused by the parameter change; specific monitored parameters include but are not limited to the liquid level and pressure of the oil in the oil storage tank, leakage of the oil storage tank interlayer, the liquid level of the quality inspection tank, the pressure and flow of the pipeline, the on-site ambient temperature, the oil and gas concentration and the anti-static grounding signal, so as to achieve architecture automation, simplification and safety.

[0090] More specific operation procedures include:

[0091] S1: receiving / sending oil operations;

[0092] S101: One-touch oil receiving / discharging function: When the operator presses the start control button, the green indicator light comes on, the electronically controlled oil receiving / discharging pipeline valve automatically opens, and the oil receiving / discharging pump starts, marking the beginning of the oil receiving / discharging operation. When the operation is complete, the operator presses the stop control button, the red indicator light comes on, the oil receiving / discharging pump stops, and the electronically controlled oil receiving / discharging pipeline valve automatically closes.

[0093] S102: Quantitative oil receiving / discharging function: First, determine the oil receiving / discharging quantity required for this operation and input this value into the PLC control module using the explosion-proof touchpad mouse 7. Then, press the start control button, the green indicator light illuminates, the electronically controlled oil receiving / discharging pipeline valve automatically opens, the oil receiving / discharging pump starts, and the oil receiving / discharging operation begins. The PLC control module monitors the oil receiving / discharging quantity in real time using a flow meter. When the preset value is reached, the oil receiving / discharging pump stops, the red indicator light illuminates, and the electronically controlled oil receiving / discharging pipeline valve automatically closes.

[0094] S2: Tank emptying operation: The operator presses the start control button, the green indicator light comes on, the tank emptying pipeline valve opens automatically, and then the receiving / discharging oil pump starts, and the tank emptying operation begins; when the operation is completed, the stop control button is pressed, the receiving / discharging oil pump stops, the red indicator light comes on, and the tank emptying pipeline valve closes automatically;

[0095] S3: Draining and returning oil: When the operator performs drainage and oil quality inspection every day, the oil at the bottom of the oil storage tank must be discharged to a closed-circuit sampler or quality inspection tank;

[0096] The liquid level in the quality inspection tank is monitored in real time by the liquid level alarm. When the monitoring reaches the high liquid level, the liquid level alarm automatically emits an audible and visual alarm to prompt the operator to stop the sediment discharge and quality inspection operations;

[0097] When performing the oil return operation, the operator presses the start control button, the green indicator light comes on, the oil return pipeline valve from the quality inspection tank to the filter separator opens automatically, the oil return pump starts, and the oil is filtered by the filter separator and then flows back to the oil storage tank; when the oil in the quality inspection tank is completely pumped out, the stop control button is pressed, the oil return pump stops running, the red indicator light comes on, and the oil return pipeline valve closes automatically;

[0098] S4: High / low level pump stop interlock control: The liquid level information of the oil product in the oil storage tank is read through the liquid level meter. During the oil receiving / dispatching operation and tank emptying operation, when the liquid level meter monitors the oil product level in the oil storage tank in real time and reaches the high / low level alarm value, the PLC control module outputs a control command to the sound and light alarm, which sounds the sound and light alarm simultaneously at the skid-mounted site and in the central control room. At the same time, the PLC control module sends an automatic shutdown command to the basic oil receiving / dispatching functional component, thereby realizing automated control and avoiding safety accidents such as oil tank overflow and emptying.

[0099] S5: Interlocking the electrostatic grounding alarm with oil receiving / dispensing operations: During skid-mounted oil receiving / dispensing operations, the electrostatic clamps of the electrostatic grounding alarm are connected to the oil tanker, tanker truck, or general aviation aircraft to achieve equipotential bonding. The electrostatic grounding alarm monitors the connection status of the electrostatic clamp in real time, allowing for timely detection of any detachment of the electrostatic clamp during operation. The PLC control module then outputs control instructions to the sound and light alarm, which simultaneously sounds an alarm at the skid-mounted site and in the central control room. Simultaneously, the PLC control module issues an automatic shutdown instruction to the basic oil receiving / dispensing functional components, thereby achieving overall automated control and effectively preventing safety accidents such as static fires caused by excessive electrostatic voltage differences between the skid-mounted system and the oil tanker, tanker truck, or general aviation aircraft.

[0100] S6: Oil and gas concentration monitoring and ventilation operation linkage: The oil and gas concentration detector monitors the combustible gas concentration in the skid-mounted environment in real time. When an oil leak occurs, the oil and gas concentration detector detects the oil vapor in the air. The PLC control module then outputs control instructions to the sound and light alarm, which sounds sound and light alarms at the skid-mounted site and in the central control room simultaneously. At the same time, the PLC control module controls the activation of explosion-proof fans to accelerate air circulation in the skid-mounted area, avoiding poisoning, fire, and explosion accidents.

[0101] S7: Low-temperature automatic heating operation: The skid-mounted ambient temperature is monitored in real time through an ambient temperature sensor. When the skid-mounted ambient temperature is lower than the warning value, the PLC control module supplies power to the heating cable, which is then powered to heat the sewage pipeline for automatic heating and insulation. This prevents water accumulation in the pipeline from freezing and blocking the pipeline, which could affect skid-mounted production operations. When the skid-mounted ambient temperature is higher than the warning value, the PLC control module stops supplying power to the heating cable.

[0102] S8: Automatic interlayer leakage alarm: The interlayer leakage sensor of the oil tank monitors the integrity of the tank wall in real time. When the interlayer leakage sensor detects oil vapor in the interlayer, the PLC control module outputs a control command to the sound and light alarm, which sounds the sound and light alarm simultaneously at the skid-mounted site and in the central control room, prompting operators to promptly check the integrity of the tank wall and take safety measures as soon as possible to prevent safety accidents such as oil leakage.

[0103] S9: Automatic overpressure monitoring alarm: The oil tank pressure sensor and pipeline pressure sensor respectively monitor the internal pressure of the skid-mounted oil tank and its pipeline in real time. When the monitored values ​​of the skid-mounted oil tank and / or skid-mounted pipeline are higher than the warning value, the PLC control module outputs a control instruction to the sound and light alarm, which sounds the sound and light alarm at the skid installation site and the central control room simultaneously, prompting operators to check the pipeline pressure relief safety valve, fire-arresting breathing valve and other equipment to prevent safety accidents such as equipment damage and oil leakage caused by overpressure;

[0104] S10: Collection, display, alarm, and transmission of skid-mounted operating parameters: Skid-mounted operating parameters are collected in real time through monitoring equipment and presented to on-site operators via LCD screen 4, facilitating skid-mounted safety management. These parameters are also transmitted to the central control room via 485 signal lines or optical fiber components, enabling fully automatic, all-day, all-weather monitoring of skid-mounted operation, especially during nighttime, rainstorms, and other unoccupied conditions.

[0105] S11: Emergency stop function: When a safety accident occurs during the production operation of the skid, the emergency stop button can be operated to quickly cut off the power supply of the entire skid, forcibly stopping the current production operation, thereby avoiding the occurrence of safety accidents and significantly improving the safety of the overall control application.

[0106] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A power distribution control cabinet architecture, characterized in that: include: Explosion-proof control cabinet, PLC control module, explosion-proof control button, emergency stop button, LCD display, explosion-proof control switch, explosion-proof indicator light, explosion-proof touch panel mouse and explosion-proof sound and light alarm; The PLC control module is fixedly mounted inside the explosion-proof control cabinet; The explosion-proof control button, the emergency stop button, the liquid crystal display, the explosion-proof control switch and the explosion-proof indicator light are respectively fixedly mounted on the outer wall of the explosion-proof control cabinet; The explosion-proof control button, the emergency stop button, and the explosion-proof control switch are respectively connected to the control input end of the PLC control module through a circuit, and the liquid crystal display and the explosion-proof indicator light are respectively connected to the control output end of the PLC control module through a circuit; The explosion-proof touchpad mouse and the explosion-proof sound and light alarm are respectively extended and fixedly assembled on the outer side of the explosion-proof control cabinet, and the explosion-proof touchpad mouse is connected to the control input end of the PLC control module inside the explosion-proof control cabinet through an isolation seal and an explosion-proof winding pipe through a circuit, and the explosion-proof sound and light alarm is connected to the control output end of the PLC control module inside the explosion-proof control cabinet through an isolation seal and an explosion-proof winding pipe through a circuit.

2. The power distribution control cabinet architecture according to claim 1, characterized in that: The explosion-proof control switches include power supply line explosion-proof control switches, surge protector explosion-proof control switches, and oil pump, explosion-proof fan, explosion-proof lamp, and heating wire loop explosion-proof control switches; The outer wall of the explosion-proof control cabinet is also equipped with a power supply inlet terminal, a monitoring equipment wiring port, an actuator wiring port and a remote signal line wiring port. The PLC control module is connected to the external power supply through the real-time power supply inlet terminal. At the same time, the real-time monitoring equipment wiring port, the real-time actuator wiring port and the real-time remote signal line wiring port are used to connect the PLC control module to the monitoring equipment, the actuator and the remote signal line through the isolation seal, the explosion-proof winding pipe and the galvanized steel pipe.

3. A skid-mounted refueling PLC control system, characterized in that: It includes the power distribution control cabinet architecture as described in claim 2.

4. The skid-mounted refueling PLC control system according to claim 3 is characterized in that: The monitoring equipment includes a level meter for the oil storage tank, a pressure sensor for the oil storage tank, a pipeline pressure sensor, a sandwich leakage sensor, a level alarm for the quality inspection tank, a flow meter, an ambient temperature sensor, an oil and gas concentration detector, and an electrostatic grounding alarm; The oil receiving / dispatching pipeline valves, tank dumping pipeline valves, and oil return pipeline valves in the actuator are all configured as electronically controlled pipeline valves; The explosion-proof indicator light includes a green indicator light for indicating the start status of each function and a red indicator light for indicating the shutdown status of each function; the explosion-proof control button includes a start control button for controlling the start of each function and a stop control button for controlling the stop of each function.

5. The skid-mounted refueling PLC control system according to claim 4 is characterized in that: The skid-mounted refueling PLC control system also includes a basic oil receiving / issuing function component and a quantitative oil receiving / issuing function component; The basic oil receiving / discharging functional component includes an electrically controlled oil receiving / discharging pipeline valve and an electrically controlled oil receiving / discharging pump connected thereto, wherein the electrically controlled oil receiving / discharging pipeline valve and the electrically controlled oil receiving / discharging pump are respectively connected to the control output end of the PLC control module via an electrical circuit; The quantitative oil receiving / discharging functional component includes the basic oil receiving / discharging functional component and a flow meter. The flow meter is connected to the oil receiving / discharging pipeline valve in the basic oil receiving / discharging functional component, and the flow meter is connected to the control input end of the PLC control module through a circuit.

6. The skid-mounted refueling PLC control system according to claim 5 is characterized in that: The skid-mounted refueling PLC control system also includes a tank dumping function component and an oil return function component; The tank emptying function component includes the electrically controlled oil receiving / discharging pump and a tank emptying pipeline valve connected thereto. The tank emptying pipeline valve is connected to the control output end of the PLC control module via an electrical circuit. The tank emptying function is turned on and off by the PLC control module in conjunction with the control button, thereby completing the electrically controlled opening and closing of the valve and the pump body based on the opening and closing actions of the control button. The oil return function component includes a quality inspection tank liquid level alarm, which is connected to the PLC control module through a circuit. When the oil at the bottom of the oil storage tank is discharged into the quality inspection tank, the liquid level alarm is installed in the quality inspection tank, and the liquid level alarm is used to monitor the internal liquid level of the quality inspection tank in real time, and to issue an audible and visual alarm when the liquid level is high or low. The oil return function component also includes a return oil pipeline valve and a return oil pump. The return oil pipeline valve and the return oil pump are respectively connected to the control output end of the PLC control module through a circuit, so that when the oil discharged into the quality inspection tank flows back to the oil storage tank through the filter separator, the return oil pipeline valve is installed in the pipeline between the quality inspection tank and the filter separator, thereby completing the electric control opening and closing of the valve and the pump body through the PLC control module and the control button.

7. The skid-mounted refueling PLC control system according to claim 6 is characterized in that: The skid-mounted refueling PLC control system also includes a high / low liquid level pump stop interlock control function component, an electrostatic grounding alarm and oil receiving / sending operation interlock function component, and an oil and gas concentration monitoring and ventilation operation interlock function component; The high / low liquid level pump stop interlock control function component includes the basic oil receiving / sending function component, a liquid level meter, an explosion-proof sound and light alarm installed in the explosion-proof control cabinet, and a central control room sound and light alarm. The liquid level meter is installed inside the oil storage tank, and the liquid level meter is connected to the control input end of the PLC control module through a circuit. The explosion-proof sound and light alarm and the central control room sound and light alarm are respectively connected to the control output end of the PLC control module through a circuit. The electrostatic grounding alarm and oil receiving / dispensing operation interlocking functional component includes the basic oil receiving / dispensing functional component, an electrostatic grounding alarm, an explosion-proof sound and light alarm installed in the explosion-proof control cabinet, and an sound and light alarm in the central control room. During each oil receiving / dispensing operation, the electrostatic clamp attached to the electrostatic grounding alarm is connected to the oil tanker, tanker truck, or general aviation aircraft, and the electrostatic grounding alarm is connected to the control input end of the PLC control module via an electrical circuit. The oil and gas concentration monitoring and ventilation operation interlocking functional component includes an oil and gas concentration detector and an explosion-proof fan; the oil and gas concentration detector is connected to the control input end of the PLC control module through a circuit, and the explosion-proof fan is connected to the control output end of the PLC control module through a circuit.

8. The skid-mounted refueling PLC control system according to claim 7 is characterized in that: The skid-mounted refueling PLC control system also includes a low-temperature automatic heating function component, an oil tank interlayer leakage automatic alarm function component, and an overpressure monitoring automatic alarm function component; The low-temperature automatic heating functional component includes an ambient temperature sensor and a heating cable. The temperature sensor is connected to the control input end of the PLC control module via a circuit. The heating cable is installed on the skid-mounted sewage pipeline and is connected to the control output end of the PLC control module via a circuit. The skid-mounted ambient temperature is monitored in real time by the ambient temperature sensor. The oil tank interlayer leakage automatic alarm function component includes an interlayer leakage sensor, which is installed in the inner and outer tank interlayers of the double-layer oil tank, and the interlayer leakage sensor is connected to the control input end of the PLC control module through an electrical circuit; The overpressure monitoring automatic alarm function component includes an oil tank pressure sensor for monitoring the internal pressure of the oil tank and a pipeline pressure sensor for monitoring the pressure of the skid-mounted pipeline. The two groups of pipeline pressure sensors are respectively connected to the control input ends of the PLC control module through circuits.

9. The skid-mounted refueling PLC control system according to claim 8, characterized in that: The skid-mounted refueling PLC control system also includes a skid-mounted operating parameter processing functional component; The skid-mounted operating parameter processing functional component is used for collecting, displaying, alarming and transmitting skid-mounted operating parameters. It includes a monitoring device, an LCD display, a signal line and an optical fiber component that are connected to the PLC control module through a circuit. The skid-mounted operating parameters are collected in real time through the monitoring device.

10. The skid-mounted refueling PLC control system according to claim 9, characterized in that: The skid-mounted refueling PLC control system also includes an emergency stop function component; The emergency stop function component includes an emergency stop button arranged between the power supply output terminal and the PLC control module. By operating the emergency stop button, the power supply of the entire skid can be directly cut off.

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