JP5469416B2 - Fuel supply system - Google Patents

Description

  The present invention relates to a fuel supply system, and in particular, a fuel supply system configured to connect a fuel supply unit and a tank via a plurality of fuel supply pipes and supply liquid fuel to nozzles of each fuel supply unit. About.

For example, in a fuel supply system having a plurality of fuel supply devices that supply liquid fuel (gasoline, light oil, etc.) to a fuel tank of an automobile, liquid fuel stored in an underground tank is supplied to each fuel supply device installed on the ground. A pipe for supplying the nozzle is buried in the ground.
In this way, in the fuel supply piping that communicates between the underground tank and the fuel supply machine, for example, when there is a crack or when the remaining amount of the underground tank decreases, or due to a temperature rise or pump liquid feeding operation Bubbles may get mixed into the liquid fuel. As described above, when bubbles are mixed in the liquid fuel, an error occurs in the flow rate measurement value. For example, the bubble detection has a bubble detection sensor for detecting that bubbles are mixed in the liquid fuel flowing through the fuel supply pipe. The thing of the structure which provided the container is developed (for example, refer patent document 1).

JP 58-11698 A

  In the conventional system, when it is detected that air bubbles are mixed in the liquid fuel flowing through the pipe, the staff at the fuel supply station (fueling station), for example, contacts the maintenance company for inspection.・ Repair requests are possible. However, when the maintenance staff of the maintenance company that has received the notification arrives at the fuel supply station, first, the cause of the mixing of the bubbles is investigated and an operation for confirming where the bubbles are generated is performed.

  The work for identifying the cause of the bubble contamination is not only the fuel supply device in which the bubble contamination is detected, but also the presence or absence of cracks in each pipe connected to the fuel supply device, and the operation of the pump and solenoid valve There was a problem that it took a lot of trouble.

  And if the cause part of bubble mixing can be specified, it will be repaired with respect to the cause part, and considerable work time was required until the repair was completed after the maintenance staff arrived at the fuel supply station.

  Therefore, in view of the above circumstances, an object of the present invention is to provide a fuel supply system that solves the above problems.

In order to solve the above problems, the present invention has the following means.
(1) The present invention provides a tank for storing liquid fuel;
A plurality of nozzles for supplying liquid fuel stored in the tank,
A fuel supply pipe to connect between said plurality of nozzles and said tank via a liquid supply pipe,
And bubble detection means you detect bubbly of each fuel supply pipe communicating with the prior SL plurality nozzles,
Storage means for storing data for displaying a connection relation with the previous SL plurality of nozzles and prior Ki燃 fee supply pipe,
When bubbles to the nozzle is detected and mixed by the bubble detecting means, and displayed over to the connection relationship reads the nozzle from the storage unit, is connected to a fuel supply pipe to which the nozzle is connected An abnormality detection location display means for displaying the fuel supply piping in an overlapping manner with respect to the connection relationship read from the storage means when it is detected by the bubble detection means of a plurality of nozzles ;
It is provided with.
(2) The present invention is the fuel supply system according to (1),
It is determined whether or not there are a plurality of nozzles that are connected to a fuel supply pipe to which the nozzles detected as bubbles are mixed by the bubble detection means and that are detected as bubbles are mixed by the bubble detection means. A determination means,
The abnormality detection location display means reads out the nozzle from the storage means as an abnormal location when it is detected by the bubble detection means that bubbles are mixed into the nozzle and the determination means determines that there are not a plurality of bubbles. In addition, only the nozzles are overlapped and displayed with respect to the connection relation .
(3) The present invention is the fuel supply system according to the above (1) or (2),
Determining whether or not there are a plurality of nozzles connected to a fuel supply pipe to which nozzles detected by the bubble detection means are detected as being mixed with bubbles, and detected by the bubble detection means as being mixed with bubbles. With means,
When the bubble detection unit detects that the bubble is mixed into the nozzle and the determination unit determines that there are a plurality of bubbles, the bubble detection unit indicates that the bubble has been mixed. The detected fuel supply pipe connected to the nozzle is displayed as an abnormal part, and the fuel supply pipe is overlapped and displayed together with the nozzle for the connection relation read from the storage means .

According to the present invention, when bubbles in the nozzle is detected and mixed by the bubble detecting means, and displayed superimposed on the read connection relationship the nozzle from the storage means, the fuel supply pipe to which the nozzle is connected When it is detected by the bubble detection means of a plurality of connected nozzles that the bubbles are mixed, the fuel supply piping is displayed over the connection relationship read from the storage means, so that the bubble mixture location can be checked at a glance. In addition, the maintenance personnel from the maintenance company can quickly check and repair from the air bubbles in the fuel supply piping connected to the nozzle, greatly reducing the time required for inspection and repair. Can do.

It is a figure which shows schematic structure of the fuel supply station to which the fuel supply system by this invention was applied. It is a figure which shows the serial line which connects a management computer and a fuel supply machine. It is a figure which shows the structure of a fuel supply machine typically. It is a figure which shows typically the bubble mixing condition table according to nozzle in which the information of each nozzle was stored. It is a figure which shows typically the piping tank information table in which the connection information of a nozzle, piping, and a tank was stored. It is a figure which shows a tank information table typically. It is a figure which shows the example of a display of the monitor screen which displays a bubble mixing location on a monitor with a management computer. It is a flowchart for demonstrating the nozzle information reception process which a management computer performs. It is a flowchart for demonstrating the nozzle abnormality determination process of the bubble mixing which the management computer performs. It is a flowchart for demonstrating the piping abnormality determination process of the bubble mixing which the management computer performs.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a fuel supply station to which a fuel supply system according to the present invention is applied. As shown in FIG. 1, the fuel management system 10 includes a plurality of underground tanks T1 and T2 buried in the ground, a plurality of fuel supply machines D1 to D4 installed on the ground, and fuel supply machines D1 to D4. A plurality of nozzles N1 to N8 provided in the fuel tank, fuel supply pipes H1 to H4 that connect the underground tanks T1 and T2 and the fuel supply units D1 to D4, and refueling information of the fuel supply units D1 to D4 And a management computer 20 for managing

  In the present embodiment, the configuration having two underground tanks T1 and T2 and four fuel supply units D1 to D4 is illustrated as an example, but other combinations of the number of installations may be used. Of course. Moreover, as fuel supply machine D1-D4, it demonstrates using the weighing machine which provided two nozzles in one unit for convenience of explanation.

  Liquid fuel such as gasoline is stored in the underground tank T1, and liquid fuel such as light oil is stored in the underground tank T2. The fuel supply pipes H1 to H4 are arranged to communicate with the nozzles N1 to N8, respectively, and are independent for each oil type. The fuel supply pipes H1 and H3 are pipes for feeding gasoline connected to the underground tank T1, and the fuel supply pipes H2 and H4 are pipes for feeding light oil connected to the underground tank T2.

  The downstream end of the fuel supply pipe H1 is connected to the nozzles N1 and N3 of the fuel supply machines D1 and D2 arranged on the left side, and the downstream end of the fuel supply pipe H2 is the fuel supply machine arranged on the left side. The nozzles N2 and N4 of D1 and D2 are connected. The downstream end of the fuel supply pipe H3 is connected to the nozzles N5 and N7 of the fuel supply machines D3 and D4 arranged on the right side, and the downstream end of the fuel supply pipe H4 is the fuel arranged on the right side. It is connected to the nozzles N6 and N8 of the feeders D3 and D4.

  FIG. 2A is a diagram showing a serial line connecting the management computer and the fuel supply machine. As shown in FIG. 2A, the management computer 20 is provided in the office 30, and the fuel supply machines D <b> 1 to D <b> 4 are provided in the fuel supply area 40. And the management computer 20 and the control apparatuses 61-64 mounted in each fuel supply machine D1-D4 are connected by the serial line 50 so that communication is possible.

  The management computer 20 reads each control program and data stored in the storage device 22 and manages the fuel supply information supplied by the nozzles N1 to N8, and the bubble detection means mounted on each fuel supply unit D1 to D4. And a control program (determination means) for determining the location where the bubbles are detected, and monitoring whether or not damage or failure has occurred in the fuel supply units D1 to D4 or the fuel supply pipes H1 to H4. A control program (abnormality detection location display means) for determining and displaying on the monitor is executed.

  The storage device 22 also stores databases such as a nozzle-by-nozzle bubble mixing situation table 100, a piping tank information table 110, and a tank information table 120, which will be described later.

  Here, the configuration of the fuel feeders D1 to D4 will be described. The fuel supply units D1 to D4 have the same configuration, and therefore the configuration of the fuel supply unit D1 will be described here.

  FIG. 2B is a diagram schematically showing the configuration of the fuel supply machine. In FIG. 2B, only one nozzle N1 is shown, and the other nozzle N2 and each device for supplying liquid fuel to the nozzle N2 are omitted.

  As shown in FIG. 2B, a hose 76 connected to the nozzle N1 is drawn out on the side surface of the housing of the fuel supply machine D1. The nozzle N1 is usually hooked on a nozzle hook 78 provided on the side surface of the casing. In addition, a liquid supply pipe 80 in which the base end of the hose 76 is connected in communication is disposed inside the housing, and the lower end of the liquid supply pipe 80 is connected to the fuel supply pipe H1.

  The liquid supply pipe 80 is provided with a pump 86 for sucking oil from the underground tank T1, a flow meter 88, and a filter 90.

  The flow meter 88 is, for example, a piston reciprocating positive displacement flow meter, and is configured to convert the volume of sucked fuel into a flow rate and output a flow rate pulse (flow rate signal) from the flow rate pulse transmitter 88a. ing. Therefore, the flow meter 88 has a structure that also measures the volume of the bubbles, and if the fuel contains bubbles, a measurement error occurs.

  The filter 90 prevents foreign matter from being sucked into the pump 86 when foreign matter in the underground tank T1 is sucked.

  Further, an oil supply amount display 94 for displaying the amount of oil supply is provided on the front surface of the housing. A control device 61 that controls each device for supplying fuel is provided inside the housing.

  The control device 61 outputs a flow rate pulse proportional to the flow rate measured by the flow rate measured by the memory 70, the nozzle switch 78a provided in the nozzle hook 78, the pump motor 86a for driving the pump 86, and the flow meter 88. The transmitter 88a, the oil supply amount display 94, and the setting device 98 for setting the oil type and the supply amount are electrically connected.

  Then, as will be described later, when the nozzle N1 is removed from the nozzle hook 78 and a signal from the nozzle switch 78a is input, the control device 61 integrates the flow rate pulse signal output from the flow rate pulse transmitter 88a and supplies oil. The amount is calculated and displayed on the oil supply amount display 94. Further, the control device 61 reads each control program and data from the memory mounted on the fuel supply machine D1 and manages the fuel supply information (oil type, supply amount, date and time) supplied by the nozzle N1, and the flow rate pulse transmitter. When the pulsation amplitude of the flow rate pulse output from 88a is monitored and the pulsation amplitude is greater than or equal to a reference value, the fuel supply device of the fuel supply unit D1 or the fuel supply pipe H1 may be damaged or broken, causing bubbles. Is detected in the fuel, and a bubble detection signal is transmitted to the management computer 20 (bubble detection means).

  The flow rate pulse transmitter 88a is constituted by a rotary encoder, for example, and is mechanically coupled to a rotary shaft (not shown) of the positive displacement flow meter, and is a pulse synchronized with the rotational speed of the rotary shaft of the flow meter 88. Is output. The number of output pulses varies depending on the specifications of the flow rate pulse transmitter 88a, but is adjusted to output, for example, 50 pulses / rotation.

  The instantaneous flow rate is obtained by counting the flow rate pulse (flow rate signal) output from the flow rate pulse transmitter 88a. This instantaneous flow rate is obtained by converting the number of pulses output per unit time into a flow rate. The unit time is a numerical value that is arbitrarily set. For example, the flow rate supplied per second (L / sec) Alternatively, the flow rate (L / min) supplied per minute can be set as the instantaneous flow rate.

  In this case, since the frequency fluctuation of the flow rate pulse output from the flow rate pulse transmitter 88a is relatively small, the pulsation amplitude of the flow rate fluctuation during fuel supply is also relatively small. For example, the pulsation amplitude of the flow rate fluctuation in the normal case where bubbles are not mixed is stored in the memory 70 of the control device 61 as a reference value.

  Further, since the flow rate pulse output from the flow rate pulse generator 88a is output at a frequency proportional to the flow rate, when bubbles are mixed in the fuel, the frequency fluctuation of the flow rate pulse becomes relatively large, and the fuel The pulsation amplitude of the flow rate during supply is also relatively large. Therefore, by comparing the measured pulsation amplitude with the reference value, it is possible to determine whether or not bubbles are mixed in the liquid fuel pumped from the underground tank T1.

  In the present embodiment, as described above, the mixing of bubbles is detected by measuring the pulsation amplitude of the flow rate obtained from the frequency fluctuation of the flow rate pulse output from the flow rate pulse transmitter 88a and comparing it with the reference value. For example, a configuration may be adopted in which an optical sensor is provided in the middle of the pipe to detect the presence or absence of bubbles from the light intensity transmitted through the pipe.

  As a cause of bubbles mixed in the liquid fuel, for example, the case where the fuel supply pipes H1 to H4 are damaged, the case of the pump is damaged, or the filter 90 is broken can be considered. .

Here, each data table stored in the database of the storage device 22 will be described. FIG. 3 is a diagram schematically showing a nozzle-by-nozzle bubble mixing state table in which information on each nozzle is stored. As shown in FIG. 3, in the bubble-by-nozzle mixing state table 100, bubbles are mixed in the past as the bubble mixing detection data for each of the nozzles N <b> 1 to N <b> 8 detected by the bubble detection unit of the fuel feeders D <b> 1 to D <b> 4. Each detected nozzle, the date and time of occurrence of abnormality for each nozzle, and the content of abnormality (air detection) are stored.
FIG. 4 is a diagram schematically showing a piping tank information table in which nozzle / piping / tank connection information is stored. As shown in FIG. 4, the piping tank information table 110 includes nozzle numbers (N1 to N8) of the nozzles N1 to N8 and piping numbers of the fuel supply pipes H1 to H4 connected to the nozzles N1 to N8 ( H1-H4) and tank numbers (T1, T2) of the underground tanks T1, T2 are stored.
FIG. 5 is a diagram schematically showing a tank information table. As shown in FIG. 5, in the tank information table 120, the tank numbers (T1, T2) of the underground tanks T1, T2, the oil types (regular gasoline, light oil) stored in the underground tanks T1, T2, and The remaining amount (18 KL, 15 KL) stored in each underground tank T1, T2 is stored.
FIG. 6 is a diagram showing a display example in which a bubble mixing portion is displayed on the monitor by the management computer. The management computer 20 has an abnormality detection location display means for estimating and displaying an abnormality occurrence location when bubble mixing is detected on the monitor screen 130 shown in FIG. The storage device 22 stores image data for displaying the monitor screen 130.
On the monitor screen 130, connection positions of the nozzles N1 to N8 and the fuel supply pipes H1 to H4 connected to the underground tanks T1 and T2 are schematically displayed. When air bubbles are detected in the fuel supply paths of the fuel supply units D1 to D4 (when the pulsation amplitude of the flow rate is greater than or equal to the reference value), the management computer 20 determines the location where the abnormality has occurred based on the detection result of the air bubbles. A determination is made, and an abnormality occurrence location based on the determination result is displayed so as to be superimposed on a line indicating the connection position relationship on the monitor screen 130.

  For example, on the monitor screen 130, hatching marks are superimposed and displayed on a line indicating the nozzle N1 and the fuel supply pipe H4 to which the nozzles N6 and N8 are connected, and air bubbles are detected by the nozzle N1 and the nozzles N6 and N8. In addition, it is displayed that there is a high possibility that the fuel supply pipe H4 is damaged causing air bubbles.

  As a result, the staff and maintenance personnel can confirm at a glance which part of each of the fuel supply pipes H1 to H4 is the cause of the air bubble mixture, and the air bubbles are indicated by the hatching mark displayed on the monitor screen 130. Since the contamination location can be specified and inspection and repair can be performed promptly from here, the time required for inspection and repair can be greatly reduced.

  Here, a control process executed by the management computer 20 will be described. FIG. 7 is a flowchart for explaining nozzle information reception processing executed by the management computer. As shown in FIG. 7, in S11, a nozzle information request signal for requesting fuel supply information for each of the nozzles N1 to N8 is transmitted from the control devices 61 to 64 of the fuel supply units D1 to D4 via the serial line 50. .

  In next S12, the fuel supply information for each of the nozzles N1 to N8 is received via the serial line 50 from the control devices 61 to 64 of the fuel supply machines D1 to D4. Then, it progresses to S13 and it is checked whether the bubble mixing detection information is contained in the fuel supply information for each nozzle N1-N8.

In S13, when the bubble mixture detection information is included in the refueling information for each of the nozzles N1 to N8 (in the case of YES), the process proceeds to S14, and the data in the nozzle-by-nozzle bubble mixture status table 100 is updated. In other words, the nozzle-by-nozzle bubble mixing status table 100 stores each nozzle in which bubble mixing is detected this time, the date and time of occurrence of abnormality for each nozzle, and the content of abnormality (air detection).
In next S15, it is checked whether or not a predetermined time set in advance has passed. In S15, when a predetermined time set in advance elapses, the process returns to S11 and the processes of S11 to S15 are repeated. Further, in S13, when the bubble mixture detection information is not included in the refueling information for each of the nozzles N1 to N8 (in the case of NO), the process of S14 is omitted and the process proceeds to S15.

  As described above, the management computer 20 repeats the processing of S11 to S15 at predetermined time intervals, so that when the bubble mixing detection information is included in the refueling information for each of the nozzles N1 to N8, the bubble mixing status for each nozzle. The data in the table 100 is automatically updated.

  Next, nozzle abnormality determination processing due to bubble mixing will be described. FIG. 8 is a flow chart for explaining a nozzle-abnormality determination process for air bubbles mixed executed by the management computer. As shown in FIG. 8, the management computer 20 reads the bubble mixing detection information of the target nozzle N1 from the nozzle-by-nozzle bubble mixing state table 100 in S21. In S22, it is checked whether or not the bubble mixing detection information of the target nozzle N1 exists in the data of the nozzle-by-nozzle bubble mixing state table 100. In S22, when there is bubble contamination detection information for the target nozzle N1 (in the case of YES), the nozzle abnormality notification flag is turned on and the process proceeds to S23.

  In S23, it is checked whether or not a predetermined time (time for completing inspection and repair) has elapsed since the occurrence. In S23, when the predetermined time does not elapse (in the case of NO), the process proceeds to S24, and abnormality is detected in the fuel supply pipe connected to the nozzle of the nozzle number among the fuel supply pipes H1 to H4 (bubble mixture detection). Notify that.

  In S23, when a predetermined time has elapsed (in the case of YES), it is determined that the abnormality in the piping system to which the nozzle is communicated has been resolved, and the process proceeds to S25. Delete the target nozzle information. In S26, the nozzle abnormality notification flag is cleared. Thereby, since the inspection and repair of the nozzle having the abnormality are completed, the abnormality notification is deleted. After this, the process proceeds to S27.

  In S22, when the bubble mixing detection information of the target nozzle N1 does not exist (NO), the process proceeds to S27. In S27, it is checked whether or not the target nozzle is the last nozzle. In S27, when the target nozzle is not the final nozzle (N8) (NO), the process proceeds to S28. In S28, the next nozzle number (any one in the order of N2 to N8) is set to the target nozzle. And it returns to S22 and repeats the process after S22. In S27, when the target nozzle is the final nozzle (N8) (in the case of YES), the current nozzle abnormality determination process is terminated.

  The management computer 20 repeats the nozzle abnormality determination processes S21 to S28 every predetermined time, and monitors whether or not an abnormality has occurred in each nozzle N1 to N8.

  Next, a control process for determining bubble mixing in the fuel supply pipes H1 to H4 will be described. FIG. 9 is a flowchart for explaining the piping abnormality determination process for air bubbles mixed executed by the management computer. As shown in FIG. 9, in S31, the target pipe is set to H1. Subsequently, the process proceeds to S32, in which the number of nozzles connected to the target pipe and the number of bubbles mixed in the target pipe are read from the nozzle-by-nozzle bubble mixing status table 100 and the pipe tank information table 110, and the pipe abnormality flag is set on.

In the next S33, the number of connected nozzles extracted in S32 = 2 (the number of nozzles connected to one fuel supply pipe) is set as the determination number. Then, it progresses to S34 and it is checked whether the said determination number is 2 or more. In S34, when the number of determinations is 2 or more (in the case of YES), the process proceeds to S35, where the number of determinations = 2. Further, in S34, after the process in the case determine the constant is less than 2 (in the case of NO), or the S35, the process proceeds to S36, bubbly generation number of nozzles is checked whether or count determination.

  In S36, if the number of nozzles in which air bubbles are mixed is equal to or greater than the determination number (in the case of YES), there is a high possibility that there is a damaged portion in the pipe that causes air bubbles to be mixed. This determination process is performed to notify the piping abnormality location. That is, as shown in the monitor screen 130 (see FIG. 6) described above, a hatching mark indicating that air bubbles are mixed is displayed on the line of the abnormal pipe. For example, when an abnormality is detected at the location of the nozzle N1 or at the nozzles N6 and N8 of the fuel supply units D3 and D4, hatching marks are superimposed on the lines indicating the nozzle N1 and the fuel supply pipe H4. Thereby, the clerk can confirm at a glance where the fuel supply pipes H <b> 1 to H <b> 4 have an abnormality that causes air bubble mixing.

  In S36, if the number of bubble mixing nozzles is less than the determination number (in the case of NO), it is difficult to determine the piping abnormality location from the number of bubble mixing nozzles, so the process proceeds to S38 and the piping abnormality flag is cleared. .

  In next S39, it is checked whether or not the target pipe is the final pipe (H8). In S39, when the target pipe is not the final pipe (H8) (in the case of NO), the process proceeds to S40, and the number of the target pipe is set to the next pipe number (any one in order of H2 to H8). Thereafter, the process returns to S32, and the processes after S32 are repeated. In S39, when the target pipe is the final pipe (H8) (in the case of YES), the present air bubble mixed pipe abnormality determination process is terminated.

  The management computer 20 repeats the pipe abnormality determination processes S31 to S40 every predetermined time, and monitors whether or not an abnormality has occurred in each fuel supply pipe H1 to H8.

  As described above, the management computer 20 can estimate the location of the piping abnormality based on the number of occurrences of the nozzle abnormality and display the piping abnormality location on the monitor screen 130 (see FIG. 6). For this reason, when maintenance personnel arrive at the fuel supply station, they do not inspect all the pipes, but inspect and repair them from the piping abnormality points displayed on the monitor screen 130. It can be greatly shortened.

  In the above embodiment, the fuel supply station having an underground tank has been described as an example. However, the present invention can also be applied to a fuel supply facility configured to store liquid fuel in a tank installed on the ground. Of course.

  In the above embodiment, a method of detecting that bubbles are mixed in the liquid fuel based on fluctuations in the amplitude of the flow rate pulse is taken as an example. However, other methods such as an optical sensor for detecting bubbles are provided. Of course, it is good also as a structure.

  Moreover, in the said Example, although the case where a nozzle abnormal location and a piping abnormal location were displayed on the monitor of a management computer was mentioned as an example, as a display screen, it is not restricted to this, For example, the portable terminal which a maintenance person possesses You may display on the display screen of an apparatus, or you may make it display on display screens, such as a touchscreen installed in the fuel supply machine.

  Moreover, in the said Example, although the method which displays and alert | reports a nozzle abnormal location and piping abnormal location on a monitor screen was demonstrated, it is needless to say that not only this but you may alert | report by a speaker.

DESCRIPTION OF SYMBOLS 10 Fuel management system 20 Management computer 22 Memory | storage device 50 Serial line 61-64 Control device 70 Memory 78 Nozzle hook 78a Nozzle switch 80 Liquid supply piping 86 Pump 88 Flow meter 88a Flow rate pulse transmitter 90 Filter 94 Oil supply amount display 98 Setting device 100 Nozzle-by-nozzle bubble mixing status table 110 Piping tank information table 120 Tank information table 130 Monitor screens T1, T2 Underground tanks D1-D4 Fuel supply machines N1-N8 Nozzles H1-H4 Fuel supply piping

Claims (3)

A tank for storing liquid fuel;
A plurality of nozzles for supplying liquid fuel stored in the tank,
A fuel supply pipe to connect between said plurality of nozzles and said tank via a liquid supply pipe,
And bubble detection means you detect bubbly of each fuel supply pipe communicating with the prior SL plurality nozzles,
Storage means for storing data for displaying a connection relation with the previous SL plurality of nozzles and prior Ki燃 fee supply pipe,
Before when bubbles in the nozzle is detected and mixed by Kiki bubble detecting means, and displayed over to the connection relationship reads the nozzle from the storage unit, the fuel supply pipe to which the nozzle is connected When it is detected that bubbles are mixed by the bubble detection means of a plurality of connected nozzles, an abnormality detection location display means for displaying the fuel supply pipe superimposed on the connection relationship read from the storage means ;
A fuel supply system comprising: The fuel supply system according to claim 1,
It is determined whether or not there are a plurality of nozzles that are connected to a fuel supply pipe to which the nozzles detected as bubbles are mixed by the bubble detection means and that are detected as bubbles are mixed by the bubble detection means. A determination means,
The abnormality detection location display means reads out the nozzle from the storage means as an abnormal location when it is detected by the bubble detection means that bubbles are mixed into the nozzle and the determination means determines that there are not a plurality of bubbles. In addition , a fuel supply system , wherein only the nozzles are overlapped and displayed with respect to the connection relation . The fuel supply system according to claim 1 or 2,
Determining whether or not there are a plurality of nozzles connected to a fuel supply pipe to which nozzles detected by the bubble detection means are detected as being mixed with bubbles, and detected by the bubble detection means as being mixed with bubbles. With means,
When the bubble detection unit detects that the bubble is mixed into the nozzle and the determination unit determines that there are a plurality of bubbles, the bubble detection unit indicates that the bubble has been mixed. A fuel supply system for displaying the fuel supply pipe connected to the nozzle as an abnormal part and displaying the fuel supply pipe on both the nozzle and the connection relation read out from the storage means .

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