Resistance measuring device for oil pipe of oiling machine

Abstract

The utility model discloses an oiling machine oil pipe resistance measuring device, which mainly solves the problems that the existing oiling machine oil pipe resistance measurement occupies more labor resources and the measurement result is easily influenced by human factors. The device comprises a casing, an insulating plate, two electrode plates and an acquisition circuit board, wherein the insulating plate is fixedly arranged relative to the casing; the two electrode plates are fixed at the insulating plate and are used for correspondingly contacting with an oil pipe to be measured; the acquisition circuit board is arranged in the casing, is correspondingly and electrically connected with the electrode plates and is used for measuring the resistance of the oil pipe to be measured; the industrial control all-in-one machine is fixed relative to the machine shell and is in corresponding communication connection with the acquisition circuit board; and the transformer is arranged in the machine shell and is used for converting commercial power into voltage class required by the acquisition circuit board. According to the measuring device, the measuring operation can be completed by only one person, the productivity is liberated, the measuring efficiency is improved, and meanwhile, the adverse effects of human factors on the result credibility and the like can be avoided.

Description

Technical Field

[0001] This application relates to the field of fuel dispenser technology, specifically to a fuel dispenser oil pipe resistance measuring device. Background Technology

[0002] In fuel dispenser systems, the fuel lines are typically made of metal (such as stainless steel) or highly conductive composite materials. Metal materials inherently possess a certain resistivity. The fuel line resistance is an important electrical parameter, affecting not only the electrical safety performance of the fuel dispenser but also potentially influencing the generation and release of static electricity during refueling, thus impacting the safety of the refueling operation.

[0003] Fuel lines serve as both the fuel delivery channel and part of the electrical circuit. If the fuel line resistance is too high, during refueling, when current flows through it, Joule's law will generate excessive heat. This heat could cause the fuel line temperature to rise, potentially leading to fires or other safety hazards. Furthermore, excessive fuel line resistance can affect the effectiveness of the fuel dispenser's grounding system. The grounding system's function is to promptly conduct static electricity and leakage current from the fuel dispenser to the earth, ensuring the dispenser's electrical safety. Excessive fuel line resistance increases grounding resistance, reduces the performance of the grounding system, and prevents the timely release of static electricity and leakage current, increasing the risk of static buildup and electric shock.

[0004] Currently, the resistance of fuel dispenser hoses is measured using a multimeter. During production, two workers work together: one holds both ends of the hose to hold it in place, while the other holds the probes of the multimeter to measure the resistance. When the multimeter probes contact the ends of the hose, the multimeter applies current to the hose to conduct electricity, thereby measuring and displaying the resistance. The readings are then taken manually and the resistance measurement results are recorded.

[0005] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application found that when using the multimeter method to measure the oil pipe resistance of the fuel dispenser, at least two workers are required, which consumes labor resources. Furthermore, the reading and recording of the oil pipe resistance both require manual intervention, and the measurement results are greatly affected by subjective human factors.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] In view of at least one of the above technical problems, this disclosure provides a fuel dispenser oil pipe resistance measuring device, which mainly solves the problem that the existing fuel dispenser oil pipe resistance measurement occupies a lot of labor resources and the measurement results are easily affected by human factors.

[0008] According to one aspect of this disclosure, a fuel dispenser oil pipe resistance measuring device is provided, comprising a housing, an insulating plate fixedly disposed relative to the housing, two electrode plates fixed at the insulating plate for corresponding contact with the oil pipe to be tested, a data acquisition circuit board disposed inside the housing and electrically connected to the electrode plates for measuring the resistance of the oil pipe to be tested, an industrial control integrated computer fixed relative to the housing and communicatively connected to the data acquisition circuit board, and a transformer disposed inside the housing for converting mains power to the voltage level required by the data acquisition circuit board.

[0009] In some embodiments of this disclosure, the fuel dispenser oil pipe resistance measuring device further includes an out-of-tolerance alarm indicator light that is electrically connected to the acquisition circuit board.

[0010] In some embodiments of this disclosure, the insulating plate is fixed to the corresponding position on the housing surface of the housing by a support plate.

[0011] In some embodiments of this disclosure, the housing is provided with a power interface for connecting to mains power, and the power interface is connected to the transformer and the industrial control integrated machine.

[0012] In some embodiments of this disclosure, the industrial control all-in-one computer is mounted on the top of the housing via a rotating bracket; the rotating bracket is hinged to the top of the housing, the rotating bracket has an arc-shaped slot, and the housing has an adjusting bolt corresponding to the position of the arc-shaped slot, with a fastening nut for fastening the rotating bracket threaded onto the adjusting bolt.

[0013] In some embodiments of this disclosure, the insulating plate is provided with magnetic elements at the positions corresponding to the electrode plates.

[0014] In some embodiments of this disclosure, an information recognition and input device that is communicatively connected to the industrial control all-in-one computer is embedded in the housing.

[0015] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages: the acquisition circuit board acquires oil pipe resistance information through two electrode plates, and displays, records, stores and uploads the measurement information through an industrial control all-in-one computer, so that a single person can measure the oil pipe resistance value, liberate production labor, improve production efficiency, and at the same time, the measurement results are automatically read, recorded and uploaded, avoiding the adverse effects of human factors on the accuracy and reliability of the results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the fuel dispenser oil pipe resistance measuring device in one embodiment of this application.

[0017] Figure 2This is a schematic diagram of the circuit principle of the fuel dispenser oil pipe resistance measuring device in one embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structure of the rotating bracket in one embodiment of this application.

[0019] In the above figures, 1 is the housing, 11 is the base, 2 is the electrode plate, 3 is the insulating plate, 4 is the over-tolerance alarm indicator, 5 is the power interface, 6 is the industrial control all-in-one computer, 7 is the rotating bracket, 71 is the hinge shaft, 72 is the arc-shaped slot, and 73 is the fastening nut. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "connection" and "linkage" in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0021] The programs involved or relied upon in the following embodiments are all conventional or simple programs in this technical field. Those skilled in the art can make conventional choices or adaptive adjustments according to specific application scenarios.

[0022] Unless otherwise specified, all devices and other components involved in the following embodiments are commercially available products.

[0023] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] To address the issues of high labor requirements and susceptibility to human error in measuring the resistance of fuel dispenser hoses, resulting in unreliable and untrustworthy measurement results, this paper discloses a fuel dispenser hose resistance measuring device. (See attached image.) Figure 1 The device includes a housing 1, with a base 11 at its bottom. The base 11 serves as the basic support component for the measuring device, ensuring stable installation of the entire device. In other embodiments, the base 11 has several wheels at its bottom, allowing the measuring device to be moved as needed, increasing its flexibility and convenience during measurement.

[0025] In existing oil pipe resistance measurements, the measurement is performed manually using a multimeter probe, requiring at least two people, which is a significant drain on manpower. Therefore, in this embodiment, two electrode plates 2 are used. The oil pipe resistance is measured by the contact between the electrode plates 2 and both ends of the oil pipe. In this example, the electrode plates 2 are made of the same metal as the oil pipe to reduce the contact electromotive force and improve measurement accuracy. Furthermore, in this embodiment, to improve the structural strength of the measuring device, the housing 1 is made of metal. However, to obtain the oil pipe resistance value, the conductive electrode plates 2 need to contact both ends of the oil pipe respectively. To avoid situations where the metal housing causes the oil pipe to directly ground, which could negatively impact the oil pipe resistance measurement, please refer to [reference needed]. Figure 1 In this example, an insulating plate 3 is installed on the outer surface of the housing 1, and the two electrode plates 2 are fixed to the insulating plate 3. This insulation of the insulating plate 3 prevents contact between the metal housing and the electrode plates, thus avoiding any adverse effects of the metal housing on the reliability and accuracy of the oil pipe resistance measurement. Specifically, in this example, the insulating plate 3 is fixed to the side of the housing at a corresponding height by a support plate. This height facilitates the operator in making corresponding contact between the oil pipe and the electrode plates. The support plate in this example is also made of insulating material and is triangular in shape. One side is screwed to the insulating plate 3, and the adjacent side is screwed to the housing, thereby supporting and fixing the insulating plate 3.

[0026] After the two ends of the oil pipe are in contact with the two electrode plates respectively, in order to obtain the oil pipe resistance value, in this example, a data acquisition circuit board is fixedly installed inside the casing. The two electrode plates 2 are electrically connected to the data acquisition circuit board. Thus, a current of a corresponding level is applied to the oil pipe through the data acquisition circuit board, and the oil pipe resistance value is calculated according to Ohm's law by measuring the voltage drop between the two electrode plates. To enable the measurement personnel to promptly and reliably determine whether the current oil pipe resistance meets the relevant requirements, in this embodiment, see... Figure 1 An out-of-tolerance alarm indicator is specified to be installed at point 3 on the insulating plate. When the oil pipe resistance does not meet the required range, the corresponding out-of-tolerance alarm indicator is driven by the acquisition circuit board to light up. The specific resistance measurement circuit based on Ohm's law and the comparison drive circuit are conventional circuit designs in this field and will not be described in detail here.

[0027] In addition, to ensure power supply during the measurement operation of the data acquisition circuit board, see [link / reference]. Figure 1 A power interface 5 is embedded in the casing, through which the mains power is connected. However, considering that the voltage required by the acquisition circuit board is incompatible with the mains voltage level, see [reference needed]. Figure 2 In this example, a transformer is installed between the power interface and the acquisition circuit board to achieve voltage conversion and meet the working requirements of the acquisition circuit board.

[0028] However, the acquisition circuit board can only measure the oil pipe resistance and trigger an out-of-tolerance alarm. To record and upload the measurement data, in this embodiment, an industrial control all-in-one computer 6 is installed at the top of the housing 1. In this example, a YMD15 industrial control all-in-one computer is used. This all-in-one computer has a built-in high-performance industrial CPU and real-time operating system, and is equipped with a multi-protocol data acquisition interface and an industrial touch screen, thus serving as the display and storage unit of the measuring device. Furthermore, in this example, the acquisition circuit board and the industrial control all-in-one computer are connected for communication. Therefore, the acquisition circuit board acquires, processes, and converts the oil pipe resistance value, and the corresponding resistance data is further transmitted to the industrial control all-in-one computer. After receiving the resistance signal data sent by the acquisition circuit board, the industrial control all-in-one computer displays, records, stores, and uploads it. See also... Figure 2 In this example, the industrial control all-in-one computer is also electrically connected to the power interface in order to obtain the power required for its operation.

[0029] In addition, to facilitate the adjustment flexibility of the industrial control all-in-one computer on the top of the housing and to make it easier for operators to control, in this embodiment, the industrial control all-in-one computer is mounted on the top of the housing via a rotating bracket. For details, see [link to documentation]. Figure 3 The rotating bracket 7 includes a fixing plate for fixing the industrial control all-in-one computer and hinge plates on both sides of the fixing plate. The hinge plates have hinge holes, and a hinge shaft 71 passing through the hinge holes is hinged to the top of the housing 1. This allows the rotating bracket and the industrial control all-in-one computer to rotate relative to the housing around the hinge shaft, thereby adjusting the orientation angle. To fix the angle of the rotating bracket 7 after adjustment, an arc-shaped slot concentric with the hinge hole is provided on the hinge plate, and an adjusting bolt is fixed to the corresponding arc-shaped slot on the housing. The adjusting bolt passes through the arc-shaped slot 72, and a fastening nut 73 is threaded onto the adjusting bolt. By tightening the fastening nut until it fits tightly against the hinge plate, the rotation of the rotating bracket is restricted. In other embodiments, in order to improve the fastening reliability of the fastening nut, friction layers are provided on the outer periphery of the arc-shaped slot of the hinge plate and the end face of the fastening nut that is used to fit the hinge plate, such as by creating texture or attaching a rubber layer, thereby increasing the friction between the two and preventing the hinge bracket from rotating around the hinge axis after the fastening nut is tightly attached to the hinge plate.

[0030] In other embodiments, to ensure a tight contact between the oil pipe and the two electrode plates 2 during resistance measurement, thereby improving the accuracy of the measurement results and avoiding distortion caused by poor contact, a magnetic component is installed below the electrode plates on the insulating plate. The magnetic force of this component attracts the oil pipe end during measurement, ensuring tight contact between the oil pipe end and the electrode plates and eliminating the adverse effects of human operation. In other embodiments, an information identification and input device, such as a barcode scanner, connected to an industrial control computer is also embedded in the housing to quickly identify and input the oil pipe number, recording the measurement results for each oil pipe.

[0031] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0032] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A device for measuring the resistance of a fuel dispenser's fuel line, characterized in that, The device includes a housing, an insulating plate fixedly disposed relative to the housing, two electrode plates fixed to the insulating plate for corresponding contact with the oil pipe to be tested, a data acquisition circuit board disposed inside the housing and electrically connected to the electrode plates for measuring the resistance of the oil pipe to be tested, an industrial control all-in-one computer fixed relative to the housing and communicatively connected to the data acquisition circuit board, and a transformer disposed inside the housing for converting mains power to the voltage level required by the data acquisition circuit board.

2. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, It also includes an out-of-tolerance alarm indicator that is electrically connected to the corresponding acquisition circuit board.

3. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, The insulating plate is fixed to the corresponding position on the surface of the housing by a support plate.

4. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, The casing is equipped with a power interface for connecting to mains power, which is connected to the transformer and the industrial control integrated machine.

5. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, The industrial control all-in-one computer is mounted on the top of the housing via a rotating bracket; the rotating bracket is hinged to the top of the housing and has an arc-shaped slot; the housing has an adjusting bolt corresponding to the arc-shaped slot, and a fastening nut for securing the rotating bracket is threaded onto the adjusting bolt.

6. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, The insulating plate is provided with magnetic components at the positions corresponding to the electrode plates.

7. The fuel dispenser oil pipe resistance measuring device according to claim 1, characterized in that, An information recognition and input device that communicates with the industrial control all-in-one computer is embedded in the casing.

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