490 results about "Fuel dispenser" patented technology

The invention discloses a data acquisition method and device for an edge internet-of-things oiling machine, and relates to the technical field of data acquisition, and the method comprises the steps: carrying out the verification of a sensor through three groups of heterogeneous sensors in combination with a confidence model and an automatic calibration program; edge node clocks are synchronized, a mixed protocol and an FPGA nanosecond-level hardware time scale are adopted, and a quantum time reference and a distributed synchronization enhancement mechanism are combined; collecting and scheduling, constructing a state decision matrix based on network quality, electric quantity and CPU load, dynamically adjusting a sampling rate and a transmission mode, integrating an LSTM model to predict a network state, calculating an abnormal score through an entropy weight method, and triggering a fault-tolerant strategy. According to the method, the data acquisition precision and reliability are remarkably improved, the energy efficiency and the transmission efficiency are optimized, and the system robustness is enhanced.

The invention relates to the technical field of refueling machine calibration, in particular to an intelligent refueling machine calibration method which comprises the following steps that a sensor is installed in a refueling machine, the initial temperature of an oil product is captured, the outflow volume of the oil product is accurately measured, and flow velocity information of the oil product is fed back in real time; configuring an intelligent valve, and setting opening and closing conditions of the valve; during oiling machine calibration, data in the whole calibration process is encrypted through an asymmetric encryption algorithm, when a calibration result is generated, a block chain links a data hash value to prevent the result from being tampered, and the identity authentication of an oil gun is authenticated through a universal unique identification code; real-time monitoring is achieved through a sensor, an alarm is triggered when abnormity occurs, meanwhile, an uninterruptible power supply is arranged, power supply is seamlessly switched at the moment of mains supply outage, and continuous operation of key assemblies is ensured. According to the invention, through high-precision temperature acquisition, in combination with precise flow monitoring and foam discrimination technologies, oil thermal expansion and cold contraction and foam influence are considered, the volume is precisely converted, and the metering error is greatly reduced.

In one aspect, a method includes establishing a first communication channel between a first computing device associated with a fuel dispenser user and a second computing device configured within a fuel dispenser. The method can further include receiving, by the second computing device, first data characterizing a first authorization of the fuel dispenser user of a fuel dispenser. The method also includes determining, by the second computing device, a second authorization of the fuel dispenser user based on the first data. The method further includes controlling, by the second computing device and based on the second authorization, operation of the fuel dispenser to dispense fuel. The method also includes providing, by the second computing device via the first communication channel, second data characterizing the operation of the fuel dispenser to the first computing device. Related apparatus, systems, and articles are also described.

The invention discloses an unmanned aerial vehicle air refueling method, device and system. The method comprises the steps that an oil receiver image and environment heat radiation data are acquired; inputting the image into a YOLOv8-tiny model to identify the taper sleeve of the oil receiver, the position of the taper sleeve and the posture of the taper sleeve; carrying out photoelectric fusion on the environment heat radiation data, the taper sleeve of the unmanned aerial vehicle, the position of the taper sleeve and the attitude; planning an optimal docking path according to the fused data, and generating a flight control instruction and a first extension instruction for controlling extension of an oil receiving pipe of the oil receiver aircraft; the oil filling pipe is controlled to extend; after it is detected that the oil receiving pipe of the oil receiver is in butt joint with the oil filling pipe, an oil filling valve is controlled to be opened; fuel oil weight data collected by a weighing sensor are detected, and the gravity center of the oiling machine is adjusted according to the fuel oil weight data so that the oiling machine can be kept balanced; and generating a refueling valve closing instruction to close the valve and control the refueling pipe to retract in response to the fact that the fuel weight is smaller than or equal to the first threshold value. The identification accuracy of the taper sleeve is high, and the operation difficulty is reduced.

The invention discloses a method and a device for checking cheating of an oiling machine. The method comprises the following steps: receiving a serial number pairing relationship between an encoder of the oiling machine and a monitoring microprocessor; according to the serial number matching relationship, generating a false serial number different from the standard serial number of the monitoring microprocessor and sending the false serial number to the encoder; and under the condition that the refueling machine refuels for a specific number of times but is still not locked, determining that cheating exists in the refueling machine. Whether the self-locking function of the oiling machine is broken or not is tested by means of the false serial number generated on purpose, so that the cheating behavior of the oiling machine can be quickly, effectively and conveniently checked.

Various exemplary devices, systems, and methods for detecting debris in payment card readers are provided. In general, a card reader configured to read a card for payment and / or other purpose(s) includes a slot configured to receive the card therein. In an exemplary embodiment, a tester is configured to be inserted into the card reader slot and identify whether debris is present in the slot that would prevent the card reader from properly reading data from a card inserted into the slot, e.g., from reading a chip of the card, etc. The tester is configured to be inserted into the card reader slot with the card reader on site at its installed location, e.g., as part of a fuel dispenser or other payment terminal.

The invention relates to the technical field of data measurement, in particular to an online measurement system and method for measurement data of an oiling machine, and the method comprises the steps: introducing a trace disturbance signal in an oiling process, and collecting a flow fluctuation sequence before and after disturbance and a feedback value of a measurement module; according to the response relation between the flow fluctuation sequence and the metering feedback, extracting stability characteristics representing metering link integrity and response consistency; judging whether the stability characteristic is abnormal or not, and outputting an online measurement credibility score and an abnormal early warning signal of the current refueling measurement according to the stability characteristic; and when the credibility score is continuously lower than the dynamic credibility threshold value by a set number of times, triggering a metering self-diagnosis mode, carrying out backtracking analysis on related data segments in a disturbance response process, and outputting a suggestive equipment maintenance instruction or fault positioning information. The method has the advantages of being quantifiable in score and explainable in judgment, and is suitable for high-adaptability online verification and evaluation in various refueling scenes and different equipment states.

The invention relates to the technical field of oiling machine verification, in particular to a hose aging detection structure for oiling machine verification, which comprises a base, a fixing frame is bolted to the top of the base, a hose main body penetrates through the interior of the fixing frame, and fixing plates are bolted to both sides of the front side of the fixing frame. A lead screw is rotationally connected between the opposite sides of the two fixing plates, the surface of the lead screw is in threaded connection with a threaded block, a detection mechanism is arranged in the fixing frame, and the hose body is located in the detection mechanism. The invention provides a hose aging detection structure for oiling machine verification, which can detect the flexibility and the performance of an oiling machine hose under pressure fluctuation at the same time, realizes comprehensive evaluation of the aging condition of the hose, and compared with a single performance detection method in the prior art, the hose aging detection structure has the advantages that the reliability is high; and the aging degree of the hose can be reflected more comprehensively and accurately.

The invention provides a burner apparatus comprising:a combustion chamber (8);a fuel dispenser (15, 16) arranged to direct a flow of fuel into the combustion chamber (8), the fuel dispenser (15, 16) being located at an upstream end of the combustion chamber and being connected or connectable to a fuel supply;an airflow modifier device (10), located at an upstream end of the combustion chamber, for controlling a primary air flow into the combustion chamber (8), the airflow modifier device (10) being configured to facilitate mixing of the air with the fuel to give a mixture for combustion; andone or more secondary air channels (24) for directing a cooling secondary air flow onto a stream of combustion products (e.g. flame) as the stream of combustion products emerges from a downstream end of the combustion chamber.Also provided are a dryer apparatus comprising a burner apparatus as described herein and a method of drying aggregates using a burner apparatus as described herein.

The invention discloses an oiling machine with a pipeline monitoring function, relates to the technical field of oiling machine monitoring, and solves the technical problems that intelligent analysis is difficult to carry out according to pipeline operation data and oil product characteristic changes, and an effective abnormal early warning and oil outlet amount compensation adjustment scheme cannot be automatically generated. Through the super-threshold analysis unit and the low-threshold analysis unit, whether the pipeline pressure is abnormal or not and whether the flow is in a normal range or not can be accurately judged, the problems of pipeline leakage, blockage and the like can be found in time, the operation safety of the gas station is greatly improved, and the super-threshold analysis unit can accurately judge whether the pipeline pressure is abnormal or not according to comparison between real-time pressure and set standard pressure. The pressure abnormal condition is rapidly judged, a detailed abnormal reason report is generated, based on accurate calculation of oil product temperature changes and expansion coefficients and deep analysis of the relation between oil product viscosity and flow, the oil outlet amount can be accurately compensated and adjusted according to the actual condition, and metering errors are reduced.

The invention discloses a refueling robot for an unmanned ship, and belongs to the technical field of refueling robots. Comprising a servo base, a first multi-axis mechanical arm is fixedly installed at the output end of the servo base, a refueling connector module used for being aligned with a to-be-refueled injection port is arranged at the tail end of the first multi-axis mechanical arm, and an anti-swing buffering mechanism used for counteracting swing is arranged on the inner side of a rocker arm, close to one end of the servo base, of the first multi-axis mechanical arm. The anti-swing buffer mechanism is provided with an oil injection guide pipe connected into the refueling connector module for oil supply, and through the combined design of double-mechanical-arm cooperative compensation and the anti-swing buffer mechanism, the problem that an oil injection connector is unstable due to ship shaking in the offshore refueling process can be solved; different from the limitation that an existing single mechanical arm depends on dynamic servo compensation, the adjusting frequency and energy consumption of a servo motor are reduced, and mechanical abrasion caused by high-frequency compensation is avoided.

A system for determining fuel dispenser metrological compliance at multiple fueling sites each having a plurality of fuel dispensers. The system comprises a cloud-based computing resource in operative communication with the fueling sites. The cloud-based computing resource is operative to receive a compliance request from a compliance entity for metrological information from a selected fuel dispenser, validate the compliance request, and provide compliance data to the compliance entity.

1. The name of the design product: fuel dispenser (CS32-M25 model). 2. The use of the design product: the design product is used to fuel motor vehicles. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a blocking anti-explosion skid-mounted automobile refueling device which comprises an outer box body, a supporting mechanism is arranged on the periphery of the lower end of the outer box body, an oil storage tank is arranged on the bottom wall of an inner cavity of the outer box body, the lower end of the oil storage tank is communicated with an oil outlet pipe, one side of the outer box body is fixedly connected with a refueling machine, and the other side of the outer box body is fixedly connected with an oil tank. The right side of the upper end of the outer box body is fixedly connected with a nitrogen mechanism, and the top wall of an inner cavity of the outer box body is fixedly connected with a sealing strip. By arranging the supporting mechanism, the device can be conveniently and integrally moved to other positions, physical strength and time consumed for moving the positions are effectively saved, the stability of the device during use can be improved, the situation that the whole device is displaced due to the fact that the whole device is supported only through universal wheels is prevented, and the stable and reliable performance of the device is effectively improved; and by arranging the nitrogen mechanism, the equipment can be filled with nitrogen, so that the blocking and explosion-proof effects are achieved, and meanwhile internal combustion or explosion of the oil storage tank can be prevented.

The invention discloses a fuel tank cap adaptive to a refueling robot and application of the fuel tank cap. The fuel tank cap comprises a fuel tank cap body and a cap-screwing-free refueling mechanism. An oil filling port connecting part is arranged on the oil tank cover main body to hermetically connect an oil filling port of an oil tank; the cap screwing-free oiling mechanism comprises a columnar pipe and a direct insertion type opening device. The outer diameter of the columnar pipe is smaller than the diameter of the oil filling port, so that the columnar pipe can be placed in the oil filling port; the inner diameter of the columnar pipe is larger than the outer diameter of a refueling muzzle so that the refueling muzzle can be inserted. The direct insertion type opening device is arranged at the end part of the columnar pipe; when the oil filling gun is inserted, the direct insertion type opening device is opened, so that the oil filling port is communicated with the oil tank; and after the oil gun is pulled out, the direct insertion type opening device is closed to seal the oil filling port. The oil tank cover can be automatically opened when the robot refuels and automatically closed after refueling through the direct insertion type opening device, and the robot refueling device can be suitable for oil tank covers of various types, and is wide in applicability, simple in structure, low in cost and easy to popularize.

The utility model discloses an oil supply device of a diesel generating set for a confluence station of an offshore wind plant, which belongs to the technical field of oil supply of the diesel generating set and comprises a plurality of daily oil tanks arranged on the upper layer of the confluence station of the offshore wind plant and located on the same layer with the diesel generating set. The bottoms of the daily oil tanks are communicated with one another through communicating pipes, an oil inlet in the top of one daily oil tank is connected with an oil outlet in the bottom of the oil storage tank through an oil conveying pipe, and an oil conveying power mechanism is arranged at the position, close to the oil outlet of the oil storage tank, of the oil conveying pipe. An oil filling port of the oil storage tank is connected with the oil filling mechanism. The oil storage tank only supplies oil to one of the daily oil tanks, and all the daily oil tanks are communicated with one another through the communicating pipes, so that diesel oil entering one daily oil tank can be conveyed to other daily oil tanks through the communicating pipes, the liquid levels of the diesel oil in all the daily oil tanks are ensured to be equal, and all the daily oil tanks can be ensured to be fully filled.

The utility model discloses a kind of automatic oilers of mold screw, including electric control part, oil tank, with the oil tank connection oil pipe, rotary arm mounting bracket, rotary arm, rotary oil path block and several oiling rods, the first end of rotary arm is hinged in the rotary arm mounting bracket, second end rotationally installed has rotary oil path block, there is first oil hole in oiling rod, each oiling rod is distributed along the circumference of rotary oil path block, and one end of oiling rod is connected rotary oil path block, another end is installed with the oil injection nozzle that is communicated with first oil hole, rotary oil path block is equipped with lubricating oil distribution structure for distributing lubricating oil from oil pipe to each oiling rod in turn between rotary arm. The utility model can realize automatic oiling, improve work efficiency, and can quantitatively provide lubricating oil for mold screw, oiling effect is good, improve the maintenance quality of pipe pile mould spring screw, prolong the service life of screw, reduce artificial maintenance cost, improve product quality;The utility model is simple in routine maintenance.

The novel oiling machine oil gun comprises an oil gun shell, the oil gun shell comprises a connecting part and a handheld part from top to bottom, an oil conveying inner pipe corresponding to an oil inlet of an airplane is arranged on the inner side of the connecting part, and an oil conveying outer pipe corresponding to an oil outlet of the airplane is arranged on the outer side of the connecting part. A clamping head which is clamped and fixed with a clamping groove in the outer side of an airplane oil inlet is arranged on the connecting part in a sliding manner, and a thrust assembly is arranged on the connecting part and is used for clamping the clamping head; and a pressing valve for controlling fuel delivery is arranged on the handheld part. The aircraft fuel oil filling device has the beneficial effects that through cooperation of the clamping head and the thrust assembly, the clamping head can be rapidly and stably fixed in the clamping groove in the outer side of the aircraft fuel oil inlet, the loosening risk in the fuel oil filling process is reduced through reliable fixation of the clamping head, and therefore fuel oil leakage is avoided, and the overall safety in the fuel oil filling process is greatly improved; and potential safety hazards are reduced.

An operation panel for performing a refueling operation incorporated in a fuel dispenser body at a gas station. The part of the operation panel represented by the solid line is where a card insertion part for prepaid cards, credit cards, etc. is arranged, which has a card insertion port with a card insertion port that is turned up at the lower end and covered with a flap pivotally supported at the upper end. The flap has a card insertion port composed of a notch at the lower end and a visor formed thereon with both ends curved upward. When inserting a card, the flap can be opened by inserting the tip of the card into the insertion port from the insertion port with only one hand holding the card, so that the card can be smoothly inserted into the insertion port.

The application relates to an autonomous cooperative control method and device for hard in-flight refueling and a storage medium. The application communicates a main controller with multiple navigation subsystems and multiple sub-controllers. In response to receiving a refueling task instruction, multiple-source state data of a tanker, a receiver and a refueling boom can be collected in real time through the multiple navigation subsystems. Then, expected docking trajectories including multiple control nodes and corresponding safety constraints of each expected docking trajectory are generated. Next, based on the docking trajectories, the safety constraints and the multiple-source state data, a cooperative control instruction is calculated through a preset cooperative control law, and the cooperative control instruction is solved to obtain multiple sub-control instructions. Finally, the sub-control instructions are sent to the sub-controllers corresponding to the sub-control instructions to control the tanker, the receiver and the refueling boom to cooperatively execute the refueling task. In this way, the docking accuracy and efficiency of hard in-flight refueling can be improved while the safety of hard in-flight refueling is ensured.

This application relates to the field of vehicle braking component testing technology, and particularly to a calibration and testing device and method based on an electric vehicle electronic fuel dispenser. The calibration and testing device includes a fixing fixture, a wiring harness connection unit, a host computer system, a transmission unit, and a PLC control system. The fixing fixture is used to hold the electric vehicle electronic fuel dispenser to be tested. The wiring harness connection unit includes a power supply and a calibration programmer. The host computer system is connected to the calibration programmer via a universal serial bus port. The transmission unit includes a positioning fixture, a telescopic cylinder, and a servo motor. One end of the positioning fixture is fixedly connected to the servo motor, and the servo motor is fixedly connected to the telescopic cylinder. One end of the PLC control system is connected to the host computer system via a network cable. This application ensures the synchronization and consistency of calibration and testing procedures for different fuel dispensers, and allows for intuitive comparison of line graphs of test results from different angles of the same fuel dispenser, achieving fully automated operation and quantitative performance evaluation.

The utility model belongs to the technical field of oiling machine oil pipe sealing mechanisms, and particularly relates to an oiling machine oil pipe clamping sleeve sealing ring composite sealing anti-disengaging mechanism which comprises a connector. The oil pipe is located on the inner side of the connector; the sealing ring is fixedly arranged on the outer side of the oil pipe in a sleeving manner; the anti-falling mechanism and the unlocking mechanism are matched with each other; the sealing mechanism comprises an extrusion ring, a fitting frame and a mounting frame; according to the oil pipe connector, the control rod is controlled to rotate, the sealing ring can be extruded on the connector through the extrusion ring, the sealing ring can be extruded to the position between the connector and the oil pipe, the gap between the oil pipe and the connector is filled, the sealing ring can be extruded to the position between the connector and the oil pipe, and therefore the oil pipe connector can be sealed. The oil pipe and the connector are sealed, the control rod and the squeezing ring can be positioned, the sealing ring is prevented from being disengaged from the connector, and rapidness and convenience are achieved.

The present disclosure relates to a power switch device for an escalator or moving walkway refueler, enabling an operator to safely operate the escalator or moving walkway refueler and prompting the operator to restore the power supply of the refueler to a normal state. The power switch device includes a power input port, including a first power input terminal and a second power input terminal, for connecting to an input power supply; a power output port, including a first power output terminal and a second power output terminal, for connecting to the escalator or moving walkway refueler, the second power input terminal is connected to the second power output terminal, and a first branch and a second branch connected in parallel are connected between the first power input terminal and the first power output terminal; an electric control on-off device, connected in the first branch, for controlling the on-off of the first branch according to the escalator or moving walkway operation signal; a manual switch, connected in the second branch, for controlling the on-off of the second branch; and a status indicator, for indicating the switch state of the manual switch.

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.

The oiling machine comprises an oiling machine body, a pipeline limiting frame is arranged on the side wall of the oiling machine body, a lifting suspension wire plate is installed on the pipeline limiting frame, a pipe passing opening is formed in the middle of the suspension wire plate, a pipeline recoverer is fixedly installed on the pipeline limiting frame, and the pipeline recoverer is fixedly installed on the pipeline limiting frame. The pipeline recoverer is detachably connected with the suspension wire plate, a plurality of gate mechanisms are arranged on the pipeline limiting frame from top to bottom at intervals, the gate mechanisms are used for limiting the sliding range of the suspension wire plate on the pipeline limiting frame, and through the structure, when the pipeline recoverer fails, the connection relation between the pipeline recoverer and the suspension wire plate can be relieved, and the pipeline recoverer is prevented from falling off. And then the up-down moving and positioning functions of the wire hanging plate on the pipeline limiting frame are achieved by controlling opening and closing of each gate mechanism, and in this way, even if the pipeline recoverer is out of order, the oil gun wire can be unwound and wound.

The present application provides an anti-seismic explosion-proof type pry dress refueling device, including a refueling machine, an oil unloading pump and a barrier explosion-proof double-layer oil storage tank, the refueling machine and the oil unloading pump are arranged at one end of the inside of the anti-seismic frame, the outside of the barrier explosion-proof double-layer oil storage tank is arranged in the inside of the anti-seismic frame through a plurality of oil tank anti-seismic units, the bottom surface of the anti-seismic frame is arranged on the top surface of the shock isolation base, the bottom surface of the shock isolation base is arranged on the top surface of the main base in the middle, the outside of the shock isolation base and the top surface of the main base are provided with a protective weir, a plurality of lead core rubber shock isolation supports in the shock isolation base are deformed to isolate a large amount of seismic energy, only a small part of the seismic energy is transmitted to the anti-seismic frame; the remaining seismic energy on the anti-seismic frame is absorbed by the viscous damper in the frame anti-seismic unit; when the anti-seismic frame shakes, the plurality of oil tank anti-seismic units reduce the shaking of the barrier explosion-proof double-layer oil storage tank, thereby further reducing the risk of tank explosion.

According to the technical scheme, the automatic oiling fuel oil treatment system is characterized by comprising a mounting frame, an oiling machine is fixedly connected into the mounting frame, and an oil outlet of the oiling machine is fixedly connected with an oiling pipe; the oiling gun is fixedly connected to one end of the oiling pipe, a PLC is fixedly connected to one side of the oiling machine, and the PLC is electrically connected with the oiling machine; the positioning component is arranged in the mounting frame, after a worker fixes the oiling machine in the mounting frame, the oiling pipe and the oiling machine are connected with the oiling gun, so that oil in the oiling machine can flow out through the oiling gun, and when the worker uses the positioning component to fix a plurality of positioning rings in the mounting frame, the oiling machine can flow out through the oiling gun; and after the oil filling pipe and the positioning rings are movably sleeved together, the oil filling pipe can be positioned by the plurality of positioning rings, so that the oil filling pipe is prevented from being randomly swung when not in use, the oil filling pipe is positioned, the abrasion of the oil filling pipe is reduced, and the service life of the oil filling pipe is prolonged.

The invention relates to a fuel distributor strip (2) for a fuel device (1), in particular for a fuel injection system or a fuel injection system, comprising a main body (15) for storing and / or distributing fuel, in particular hydrogen, and comprising at least one connection piece (16, 17, 18) to which a fuel valve (6, 7, 8) can be connected, the connecting piece (16, 17, 18) has a connecting surface (20) facing an outer side (21) of the main body (15), an access opening (23) of a connecting channel (22) of the connecting piece (16, 17, 18) being arranged in the connecting surface (20), and wherein the connecting piece (16, 17, 18) is connected to the main body (15) at least by means of a brazing connection on the connecting surface (20). According to the invention, a) the connecting piece (16, 17, 18) has at least one recess (25, 26, 27, 28) in the connecting surface (20) of the connecting piece and / or the main body (15) has at least one recess in the connecting surface (20) of the connecting piece (16, 17, 18) and b) the at least one recess (25, 26, 27, 28) in the connecting surface (20) of the connecting piece (16, 17, 18) and / or the main body (15) has at least one recess in the connecting surface (20) of the connecting piece (16, 17, 18) in the connecting surface (20) of the connecting piece (16, 17, 18). At least one groove on the connecting surface (20) of the connecting piece (16, 17, 18) at least substantially surrounds an inlet opening (21) of the connecting channel (22) of the connecting piece (16, 17, 18), and a fuel system (1) having such a fuel distributor bar (2).

The utility model relates to the technical field of oiling machine verification equipment, in particular to a metrological verification oil storage device of an oiling machine, and solves the technical problem that the verification and storage arrangement in the prior art is separated, so that the treatment efficiency of recovered oil after treatment and detection is low. The metrological verification oil storage device is characterized in that a first end of a metering container is connected with a connecting neck; the connecting neck is connected with the refueling hopper; the metering container is provided with a metering window, and metering scales are arranged on the metering window; the metering container is arranged on a foundation seat through a bracket; the sum of the volumes of the two oil storage containers is larger than that of the metering container; the two oil storage containers can be communicated with the metering container, and the low position of the metering container is higher than the high position of the oil storage containers; the two oil storage containers can be communicated through a low-position communicating pipe; and the low-position communicating pipe is connected with an oil return pump. The technical scheme has the advantages that verification oil can be quickly recycled, the risk of low liquid level of the oil pump can be prevented by recycling the verification oil through the two oil storage containers, and the efficiency of multiple verification is effectively improved.

The invention provides a mobile refueling metering verification tool car, which relates to the technical field of petrochemical metering verification, and comprises a refueling metering verification unit, a safety unit, a mobile support unit, a metering mechanism, a storage mechanism, a flame arrester, a static elimination mechanism, a support mechanism and a lifting mechanism. The metering barrel and the storage barrel are arranged up and down, so that the integrated operation of primary verification, temporary storage and secondary detection of the oil product is realized; the static electricity eliminating mechanism can guide static electricity and stray current into the ground, the flame arrester prevents flames from entering and prevents oil gas from tempering, and the anti-explosion safety is improved; the bottom is matched with a foot jack through scissor fork lifting, the height can be accurately adjusted to align with the oil gun, and mobile verification is achieved through cooperation with wheels. A traditional independent metering barrel is replaced, manual repeated carrying is not needed, leakage and collision are reduced, operation is easy and convenient, safety and reliability are achieved, the metering self-checking efficiency and operation safety of the oiling machine of the gas station are greatly improved, and the metering barrel is suitable for daily metering checking scenes of the gas station.