Split type oiling machine

Abstract

A split type oiling machine comprises an oiling machine body and a metering box, and the oiling machine body is used for controlling and executing oiling operation; the metering box is placed in an oil tank area of a gas station, the distance between the metering box and the oiling machine body is 5-100 m, and the metering box is connected with the oiling machine body through an oil conveying pipe and a communication cable. The communication cable comprises a sheath, an outer shielding layer, an inner shielding layer, two inner shielding sleeves and two twisted pairs, one twisted pair is used for communication, the other twisted pair is used for power supply, the two twisted pairs are located in the two inner shielding sleeves respectively, the two inner shielding sleeves are wrapped in the inner shielding layer, and the outer shielding layer is arranged in the sheath. And the inner shielding layer, the outer shielding layer and the sheath are sequentially arranged from inside to outside. The metering box is placed in an oil tank area, space is effectively utilized, health damage and explosion danger to personnel near the oiling machine can be avoided, the high-shielding communication cable is adopted, stable signal transmission can be guaranteed, and the metering box belongs to the technical field of oiling machines.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel dispensers, in particular to a split-type fuel dispenser. Background Art

[0002] Fuel dispensers are a common sight at gas stations, primarily used to refuel vehicles such as cars. They typically consist of a metering tank, a fuel nozzle, an operating panel, a display, and a controller. The metering device measures and controls the amount of fuel dispensed, enabling quantitative refueling.

[0003] Currently, fuel dispensers are generally placed on refueling islands and cannot be installed remotely. The metering devices contain pumps, solenoid valves, flow meters and other components, and the pipelines are relatively complex, which inevitably leads to oil and vapor leakage, causing certain damage to personnel health and increasing the risk of oil and vapor explosions. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a split fuel dispenser that can reduce the damage to human health caused by oil vapor leakage and the risk of oil vapor explosion.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a split-type fuel dispenser, comprising a fuel dispenser body and a metering box, the fuel dispenser body being used to control and perform refueling operations; the metering box being placed in the oil tank area of the gas station, the metering box being 5 to 100 meters away from the fuel dispenser body, and the metering box being connected to the fuel dispenser body through an oil pipeline and a communication cable; the communication cable comprising a sheath, an outer shielding layer, an inner shielding layer, two inner shielding sleeves and two twisted pair wires, one twisted pair wire being used for communication and the other twisted pair wire being used for power supply, the two twisted pair wires being respectively located in two inner shielding sleeves, the two inner shielding sleeves being both wrapped inside the inner shielding layer, the inner shielding layer, the outer shielding layer and the sheath being arranged in sequence from the inside to the outside.

[0006] This structure allows the metering box, which is prone to generating fuel vapor, to be placed farther from the fuel dispenser in the tank area. This not only effectively utilizes space but also prevents health hazards and explosion hazards to personnel near the dispenser. Furthermore, due to the long distance, to ensure stable communication between the metering box and the dispenser, a highly shielded communication cable with inner and outer shielding layers and an inner shielding sleeve is used. This effectively isolates external and internal interference signals, ensuring highly stable and reliable transmission signals.

[0007] As a preferred embodiment, the materials of the inner shielding layer and the inner shielding sleeve are both aluminum foil, and the material of the outer shielding layer is tinned copper.

[0008] As a preferred embodiment, the twisted pair cable is formed by two copper wires wrapped with insulating material and twisted together.

[0009] As a preferred embodiment, the distance between the metering box and the fuel dispenser body is 100m.

[0010] As a preferred embodiment, it also includes an electronic control system, which includes a gas station management system, an IC card reading and writing terminal, a printer device, an indicating device, a computer device, a control panel and an electrical control box; the electrical control box is electrically connected to the metering box and the control panel, and the control panel, the gas station management system, the IC card reading and writing terminal, the printer device and the indicating device are electrically connected to the computer device respectively; the electrical control box, the control panel, the computer device, the IC card reading and writing terminal and the printer device are all arranged on the main body of the gas station.

[0011] As a preferred embodiment, the metering box is installed with an oil delivery control pipeline, on which a starting oil pump, a shut-off valve, a filter, a flow measurement converter and a solenoid valve group are provided; the starting oil pump, the shut-off valve, the filter, the flow measurement converter and the solenoid valve group are connected in sequence, and the flow measurement converter is connected with an encoder, which is used to convert the mechanical signal of the flow measurement converter into a digital signal; the electrical control box is electrically connected to the starting oil pump, the computer device is electrically connected to the encoder, and the control panel is electrically connected to the solenoid valve group.

[0012] As a preference, there are two oil delivery control pipelines and they are arranged in parallel.

[0013] As a preference, the solenoid valve group includes a first solenoid valve and a second solenoid valve arranged in parallel, and the diameter of the first solenoid valve is larger than the diameter of the second solenoid valve.

[0014] As a preferred embodiment, a CAN bus communication system is also included, and the CAN bus communication system is used for communication between the metering box and the fuel dispenser body.

[0015] As a preferred embodiment, the CAN bus communication system includes a first device transceiver node, a second device transceiver node, a receiving module, a receiving buffer, a sending module, and a sending buffer. Data is transmitted between the first device transceiver node and the second device transceiver node via a twisted pair cable. The second device transceiver node is connected to the receiving module and the sending module, the receiving module is connected to the receiving buffer, and the sending module is connected to the sending buffer. When sending data, the application layer sends the data to the sending buffer and then to the sending module. When receiving data, the receiving buffer transfers data from the second device transceiver node and then sends the data to the receiving module, and the application layer reads the data from the receiving module.

[0016] In general, the utility model has the following advantages:

[0017] (1) Placing the meter box at a distance from the oil tank area can not only save space for the gas station, but also reduce the oil vapor at the gas pump, avoid harm to health, and reduce the risk of explosion.

[0018] (2) Using high-shielding performance communication cables can ensure the stability and reliability of long-distance communication.

[0019] (3) Fuel filling at different flow rates can be achieved through two oil delivery control pipelines.

[0020] (4) The solenoid valve group adopts a large and small valve design (the first solenoid valve and the second solenoid valve) to achieve precise control of the oil volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the composition of a split-type fuel dispenser.

[0022] Figure 2 This is a schematic diagram of the spatial layout of a split-type refueling machine.

[0023] Figure 3 A schematic cross-sectional view of a communication cable.

[0024] Figure 4 Schematic diagram of the working process of the CAN bus communication system.

[0025] 1 is the oil tank, 2 is the starting oil pump, 3 is the shutoff valve, 4 is the filter, 5 is the flow measurement transducer, 6 is the encoder, 7 is the solenoid valve assembly, 8 is the electrical control box, 9 is the control panel, 10 is the computer device, 11 is the gas station management system, 12 is the IC card reader / writer terminal, 13 is the printer device, and 14 is the indicator device. 15-1 is the copper conductor, 15-2 is the insulation material, 15-3 is the inner shielding sleeve, 15-4 is the inner shielding layer, 15-5 is the outer shielding layer, and 15-6 is the sheath. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] like Figure 1 As shown, a split-type fuel dispenser includes a fuel dispenser body and a metering box. The fuel dispenser body is used to control and perform fueling operations; the metering box is placed in the oil tank area of the gas station, and the distance between the metering box and the fuel dispenser body is 5 to 100 meters. The metering box is connected to the fuel dispenser body through an oil pipeline and a communication cable. Figure 1 The solid line with an arrow in the middle represents the direction of oil transportation, and the dotted line with an arrow represents the direction of signal transmission.

[0028] like Figure 2The diagram shows the spatial layout of the aforementioned split-type fuel dispensers within a gas station. The main dispenser is located at the refueling island, relatively far from the tank farm. The dispenser is connected via wiring to the multimedia console, intercom host, authorized self-service console, fuel dispenser backend, and other components in the business hall, as well as the fuel dispenser control box in the power distribution room. The layout of the business hall and power distribution room follows conventional technology.

[0029] like Figure 3 As shown, the communication cable includes two twisted pair wires, one of which is used for communication and the other is used for power supply; the communication cable includes a sheath, an outer shielding layer, an inner shielding layer, two inner shielding sleeves and two twisted pair wires, one of which is used for communication and the other is used for power supply, the two twisted pair wires are respectively located in two inner shielding sleeves, the two inner shielding sleeves are both wrapped inside the inner shielding layer, and the inner shielding layer, outer shielding layer and sheath are arranged in sequence from the inside to the outside.

[0030] The two twisted pairs are each wrapped in an independent inner shielding sleeve, which can prevent the twisted pair used for power supply from causing electromagnetic interference to the twisted pair used for communication. The inner and outer shielding layers can isolate the signal interference generated by other external electrical devices. The twisting can eliminate the common-mode interference on the single twisted pair and extract the useful differential-mode signal, ensuring high stability of communication.

[0031] In some embodiments, the inner shielding layer and the inner shielding sleeve are both made of aluminum foil, and the outer shielding layer is made of tinned copper.

[0032] In some embodiments, the twisted pair cable is formed by twisting two copper wires wrapped in insulation material. The copper wires are 24-gauge insulated copper wires with a copper purity of over 99.5%, ensuring high efficiency and quality of signal transmission.

[0033] In some embodiments, the distance between the metering box and the fuel dispenser body is 100 m.

[0034] In some embodiments, an electronic control system is also included, which includes a gas station management system, an IC card reading and writing terminal, a printer device, an indicating device, a computer device, a control panel and an electrical control box; the electrical control box is electrically connected to the metering box and the control panel, and the control panel, the gas station management system, the IC card reading and writing terminal, the printer device and the indicating device are electrically connected to the computer device respectively; the electrical control box, the control panel, the computer device, the IC card reading and writing terminal and the printer device are all arranged on the main body of the gas pump.

[0035] The gas station management system, IC card reader / writer terminal, printer device, indicator device, computer device, control panel and electrical control box can adopt existing products. The main body of the gas station is also provided with a fuel gun and the like.

[0036] During operation, the gas station attendant inserts an IC card, a computer device issues commands, a control panel receives the signals, and the electrical control box outputs voltage, activating the fuel pump. Fuel is drawn from the tank, passing through a shutoff valve, filter, flow transducer, and solenoid valve, and then delivered to the fuel nozzle for refueling cars or trucks. The flow transducer rotates, and an encoder converts the mechanical signal into a digital signal. An indicator displays the volume and amount of fuel. After payment, a printer prints a receipt, signaling the completion of refueling.

[0037] In some embodiments, the metering box is equipped with an oil delivery control pipeline, which is provided with a starting oil pump, a shut-off valve, a filter, a flow measurement converter and a solenoid valve group; the starting oil pump, the shut-off valve, the filter, the flow measurement converter and the solenoid valve group are connected in sequence, and the flow measurement converter is connected to an encoder, which is used to convert the mechanical signal of the flow measurement converter into a digital signal; the electrical control box is electrically connected to the starting oil pump, the computer device is electrically connected to the encoder, and the control panel is electrically connected to the solenoid valve group.

[0038] The input of the starter pump is connected to the buried oil tank to pump fuel out of the tank. The encoder can use an encrypted anti-cheating encoder. The data transmission and reception software uses interrupt response processing to ensure fast and timely data response. Each device node implements dual data filtering in hardware and software to prevent the reception and processing of abnormal bus data and data not belonging to the node, thereby accelerating data communication efficiency.

[0039] In some embodiments, there are two fuel delivery control lines arranged in parallel. The valve bodies on the two fuel delivery control lines can adopt different specifications, so that the two lines can output fuel at different flow rates between 40L / min and 70L / min.

[0040] In some embodiments, the solenoid valve assembly includes a first solenoid valve and a second solenoid valve arranged in parallel, with the first solenoid valve having a larger diameter than the second. Using separate large and small valves to control flow rates allows for precise control of refueling volume. During refueling, the large and small valves are dynamically controlled, opening and closing the large valve, opening and closing the small valve, and then closing the valve. The control sequence and amount are configurable to further mitigate flow overshoot and improve refueling metering accuracy.

[0041] In some embodiments, a CAN bus communication system is also included, and the CAN bus communication system is used for communication between the metering box and the fuel dispenser body.

[0042] In some embodiments, as Figure 4As shown, the CAN bus communication system includes a first device transceiver node, a second device transceiver node, a receiving module, a receiving buffer, a sending module, and a sending buffer. Data is transmitted between the first device transceiver node and the second device transceiver node via a twisted pair cable. The second device transceiver node is connected to the receiving module and the sending module, the receiving module is connected to the receiving buffer, and the sending module is connected to the sending buffer. When sending data, the application layer sends the data to the sending buffer and then sends it to the sending module. When receiving data, the receiving buffer moves data from the second device transceiver node and then sends the data to the receiving module, and the application layer reads the data from the receiving module.

[0043] The dual-buffered communication system described above, comprising a transmit buffer and a receive buffer, operates independently, ensuring efficient and stable communication. Specifically, the following operating method is used: when transmitting data, the application layer first sends the data to the transmit buffer, which then transfers the data to the transmit buffer according to a first-in, first-out mechanism. The transceiver layer then checks the buffer for data to be sent and sends it out. Once the data is actually sent and received by the bus, the sent buffer is deleted. When receiving data, the transceiver layer triggers a receive interrupt when it detects data on the bus that the node device needs to receive. Software determines whether the data is valid for the node and transfers the received data to the receive buffer. The receive buffer then transfers the data to the receive buffer according to a first-in, first-out mechanism. The application layer reads the received data from the receive buffer and deletes the previously read data from the receive buffer. The transmit and receive buffers are appropriately sized based on the device's needs. This dual-buffered design ensures efficient and stable communication. Furthermore, the communication protocol can be customized and encrypted to ensure data security.

[0044] The above embodiments are preferred implementation methods of the utility model, but the implementation methods of the utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the utility model should be considered equivalent replacement methods and are included in the scope of protection of the utility model.

Claims

1. A split-type fuel dispenser, characterized by: It includes a fuel dispenser body and a metering box. The fuel dispenser body is used to control and perform fueling operations; The meter box is placed in the oil tank area of the gas station. The distance between the meter box and the main fuel dispenser is 5 to 100 meters. The meter box is connected to the main fuel dispenser through the oil pipeline and communication cable. The communication cable includes a sheath, an outer shielding layer, an inner shielding layer, two inner shielding sleeves and two twisted pair wires, one of which is used for communication and the other is used for power supply. The two twisted pair wires are respectively located in two inner shielding sleeves, and the two inner shielding sleeves are both wrapped inside the inner shielding layer. The inner shielding layer, outer shielding layer and sheath are arranged in sequence from the inside to the outside.

2. A split-type fuel dispenser according to claim 1, characterized in that: The materials of the inner shielding layer and the inner shielding sleeve are both aluminum foil, and the material of the outer shielding layer is tinned copper.

3. A split-type fuel dispenser according to claim 1, characterized in that: Twisted pair cable consists of two copper conductors wrapped in insulation and twisted around each other.

4. A split-type fuel dispenser according to claim 1, characterized in that: The distance between the meter box and the main body of the fuel dispenser is 100m.

5. A split-type fuel dispenser according to claim 1, characterized in that: It also includes an electronic control system, which includes a gas station management system, an IC card reader / writer terminal, a printer device, an indicator device, a computer device, a control panel and an electrical control box; The electrical control box is electrically connected to the metering box and the control panel, and the control panel, the gas station management system, the IC card reading and writing terminal, the printer device and the indicating device are electrically connected to the computer device respectively; The electrical control box, control panel, computer device, IC card reading and writing terminal and printer device are all arranged on the fuel dispenser body.

6. A split-type fuel dispenser according to claim 5, characterized in that: The metering box is equipped with an oil delivery control pipeline, which is equipped with a starting oil pump, a shut-off valve, a filter, a flow measurement converter and a solenoid valve group; The starting oil pump, the shut-off valve, the filter, the flow measurement transducer and the solenoid valve group are connected in sequence. The flow measurement transducer is connected to an encoder, which is used to convert the mechanical signal of the flow measurement transducer into a digital signal. The electrical control box is electrically connected to the starting oil pump, the computer device is electrically connected to the encoder, and the control panel is electrically connected to the solenoid valve group.

7. A split-type fuel dispenser according to claim 6, characterized in that: There are two oil delivery control pipelines and they are arranged in parallel.

8. A split-type fuel dispenser according to claim 6, characterized in that: The solenoid valve group includes a first solenoid valve and a second solenoid valve which are arranged in parallel. The diameter of the first solenoid valve is larger than the diameter of the second solenoid valve.

9. A split-type fuel dispenser according to claim 1, characterized in that: It also includes a CAN bus communication system, which is used for communication between the metering box and the fuel dispenser body.

10. A split-type fuel dispenser according to claim 9, characterized in that: The CAN bus communication system includes a first device transceiver node, a second device transceiver node, a receiving module, a receiving buffer, a sending module, and a sending buffer. Data is transmitted between the first device transceiver node and the second device transceiver node via a twisted pair cable. The second device transceiver node is connected to the receiving module and the sending module, the receiving module is connected to the receiving buffer, and the sending module is connected to the sending buffer.

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