Oil-submerged pump control cabinet monitoring and refueling device

Abstract

The invention relates to the technical field of gas station safety monitoring, in particular to an oil-submerged pump control cabinet monitoring and refueling device which comprises an oil pump, a first current and voltage monitoring assembly and a monitoring assembly. Wherein the oil pump is connected with the power supply through a first circuit; the first current and voltage monitoring assembly is arranged on the first circuit and used for monitoring current and voltage on the first circuit; and the monitoring assembly is in signal connection with the first current and voltage monitoring assembly and is used for displaying the current and voltage information on the first circuit monitored by the first current and voltage monitoring assembly, or judging and displaying the equipment operation state according to the current and voltage information. The problems that in the prior art, operation state monitoring and abnormal alarm monitoring and processing cannot be carried out on oil-submerged pump and oiling machine equipment in real time, so that only field personnel know problems of field equipment, a unified supervision platform cannot be notified in the first time, and safety emergency management is single can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas station safety monitoring, and in particular to a submersible pump control cabinet monitoring and refueling device. Background Art

[0002] In the field of gas station retail, the submersible pump control cabinet is a core control device used to control the operation of the submersible pump, so that the oil in the oil tank passes through the oil pipeline and is injected into the vehicle's fuel tank through the oil gun.

[0003] Traditional submersible pump control cabinets are composed of mechanical electrical components and lack information and digital capabilities. They are unable to monitor the operating status of submersible pumps and refueling machine equipment in real time and monitor and handle abnormal alarms. If there is a problem with the on-site equipment, only the on-site personnel will know about it, and the unified supervision platform cannot be notified in the first time, resulting in a single safety emergency management system. Summary of the invention

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a submersible pump control cabinet monitoring and refueling device, which can solve the problem that the prior art is unable to monitor the operating status and abnormal alarm monitoring and processing of submersible pumps and refueling machine equipment in real time, resulting in problems with on-site equipment that are only known to on-site personnel and cannot be notified to the unified supervision platform in the first time, resulting in a single safety emergency management.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] In one aspect, the present invention provides a refueling device, characterized in that it comprises:

[0007] An oil pump connected to a power supply via a first circuit;

[0008] A first current and voltage monitoring component, which is provided on the first circuit and is used to monitor the current and voltage on the first circuit;

[0009] A monitoring component is signal-connected to the first current and voltage monitoring component, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to determine and display the equipment operating status obtained based on the current and voltage information.

[0010] In some optional solutions, an oil pump circuit breaker and an AC contactor are sequentially provided on the first circuit from the power supply to the oil pump, and the first current and voltage monitoring component includes:

[0011] A first current signal collector, which is provided on the first circuit between the oil pump circuit breaker and the AC contactor;

[0012] A first voltage signal collector, which is provided on the first circuit between the AC contactor and the oil pump;

[0013] The second voltage signal collector is arranged on the first circuit between the oil pump circuit breaker and the AC contactor.

[0014] In some optional schemes, the refueling device also includes a refueling machine, which is connected to the power supply through a second circuit. The refueling machine is connected to the AC contactor through a control circuit. The control circuit includes a third circuit for connecting the AC contactor to the power supply end of the refueling machine. The third circuit is provided with a refueling gun auxiliary contact switch. The refueling gun auxiliary contact switch is closed when the gun is lifted and is connected to the monitoring component signal.

[0015] In some optional schemes, the auxiliary contact switch of the fueling gun is connected to the monitoring component signal through a gun raising signal collector, and the gun raising signal collector is used to collect the opening and closing signal of the auxiliary contact switch of the fueling gun and transmit the signal to the monitoring component.

[0016] In some optional schemes, the fuel dispenser is provided with an emergency power-off switch, and the second circuit is provided with a second current and voltage monitoring component for monitoring the current and voltage on the second circuit and connected to the signal of the monitoring component.

[0017] In some optional schemes, the second current and voltage monitoring component includes a second current signal collector and a third voltage signal collector arranged on the second circuit.

[0018] On the other hand, the present invention also provides a submersible pump control cabinet monitoring device, characterized in that it includes:

[0019] A first current and voltage monitoring component is used to be arranged on a first circuit connecting the oil pump and the power supply to monitor the current and voltage on the first circuit;

[0020] A monitoring component is signal-connected to the first current and voltage monitoring component, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to determine and display the equipment operating status obtained based on the current and voltage information.

[0021] In some optional solutions, the first current and voltage monitoring component includes:

[0022] A first current signal collector, which is arranged between the oil pump circuit breaker and the AC contactor on the first circuit;

[0023] A first voltage signal collector, which is provided on the first circuit between the AC contactor and the oil pump;

[0024] The second voltage signal collector is arranged on the first circuit between the oil pump circuit breaker and the AC contactor.

[0025] In some optional schemes, the submersible pump control cabinet monitoring device also includes a second current and voltage monitoring component, which is arranged on a second circuit for connecting the fuel dispenser and the power supply, is used to monitor the current and voltage on the second circuit, and is connected to the monitoring component signal.

[0026] In some optional schemes, the second current and voltage monitoring component includes a second current signal collector and a third voltage signal collector arranged on the second circuit.

[0027] Compared with the prior art, the advantages of the present invention are: by setting a first current and voltage monitoring component on the first circuit connecting the oil pump and the power supply, the current and voltage on the first circuit are monitored, and the current and voltage information on the monitored first circuit is uploaded to the monitoring component, and the monitoring component displays the current and voltage information monitored by the current and voltage monitoring component, or judges and displays the equipment operation status obtained according to the current and voltage information. Remote monitoring of whether the oil pump is abnormal can be achieved, avoiding the failure to report fault information in time when there is a fault on site, and improving the safety of on-site equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 Schematic diagram of an oil pump circuit in an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a fuel dispenser circuit in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the configuration of the auxiliary contact switch of the fuel gun in an embodiment of the present invention;

[0032] Figure 4 Schematic diagram of signal transmission of the entire refueling device in an embodiment of the present invention.

[0033] In the figure: 1. oil pump; 2. oil pump circuit breaker; 3. AC contactor; 41. first current signal collector; 42. first voltage signal collector; 43. second voltage signal collector; 5. fuel dispenser; 61. second current signal collector; 62. third voltage signal collector; 7. fuel dispenser circuit breaker. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 and Figure 4 As shown, on the one hand, the present invention provides a refueling device, including: an oil pump 1, a first current and voltage monitoring component and a monitoring component. The oil pump 1 is connected to a power supply through a first circuit; the first current and voltage monitoring component is arranged on the first circuit, and is used to monitor the current and voltage on the first circuit; the monitoring component is connected to the first current and voltage monitoring component by signal, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to judge and display the equipment operation status obtained according to the current and voltage information.

[0037] In this solution, a first current and voltage monitoring component is set on the first circuit connecting the oil pump 1 and the power supply to monitor the current and voltage on the first circuit, and the current and voltage information on the monitored first circuit is uploaded to the monitoring component, and the monitoring component displays the current and voltage information monitored by the current and voltage monitoring component, or judges and displays the equipment operation status obtained based on the current and voltage information. Remote monitoring of whether the oil pump 1 is abnormal can be achieved, avoiding the failure to report fault information in time when there is a fault on site, and improving the safety of on-site equipment.

[0038] When there are multiple oil pumps 1, each oil pump 1 can be equipped with a current and voltage monitoring component, and the current and voltage information monitored by all current and voltage monitoring components can be transmitted to the monitoring component, so as to realize centralized monitoring of multiple gas stations. The monitoring component can be a display screen, which displays the monitored voltage and current data in real time; in this example, the monitoring component includes an embedded edge computing device and a host computer, and the embedded edge computing device is used to judge the operating status of the device according to the current and voltage detected by the first current and voltage monitoring component, that is, to judge the operating status of the oil pump 1, and transmit the judgment result to the host computer, and the host computer is used to store and display the judgment result of the embedded edge computing device. When there is an abnormality in the monitored current and / or voltage, an alarm is issued so that the abnormal situation can be handled in time.

[0039] In this example, the oil pump 1 is a submersible oil pump.

[0040] Preferably, the first circuit is provided with an oil pump circuit breaker 2 and an AC contactor 3 in sequence from the power supply to the oil pump 1, and the first current and voltage monitoring component includes: a first current signal collector 41, a first voltage signal collector 42 and a second voltage signal collector 43. Among them, the first current signal collector 41 is provided on the first circuit between the oil pump circuit breaker 2 and the AC contactor 3; the first voltage signal collector 42 is provided on the first circuit between the AC contactor 3 and the oil pump 1; the second voltage signal collector 43 is provided on the first circuit between the oil pump circuit breaker 2 and the AC contactor 3.

[0041] In this example, the function of the oil pump circuit breaker 2 is to cut off and connect the load circuit, and cut off the fault circuit to prevent the accident from expanding and ensure safe operation. The function of the AC contactor 3 is to receive the gun lifting signal and start the submersible oil pump.

[0042] Therefore, the line direction is that the incoming end of the oil pump circuit breaker 2 is connected to the power incoming line, the outgoing end is connected to the power outgoing end of the AC contactor 3, and the outgoing end of the AC contactor 3 is connected to the submersible oil pump.

[0043] During normal operation, the oil pump circuit breaker 2 is closed, and the refueling cabinet controls the on and off of the AC contactor 3 through the lifting / hanging gun signal to start / stop the submersible oil pump; during maintenance, the oil pump circuit breaker 2 is disconnected, the rear end AC contactor 3 and the oil pump are in a power-off state, and the lifting / hanging gun signal is invalid.

[0044] Based on the above settings, whether the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 can collect corresponding signals can determine whether the oil pump 1 and the monitoring component have faults, are in maintenance status, or are in normal status.

[0045] According to the setting positions of the oil pump circuit breaker 2 and the AC contactor 3 on the first circuit, the oil pump 1 and the monitoring component have different operating states, and different current and voltage signals are presented at different positions on the first circuit:

[0046] Submersible oil pump standby state: no gun lifting signal, no current signal at the outlet of oil pump circuit breaker 2, and a voltage signal at the inlet of AC contactor 3.

[0047] Submersible oil pump operating status: there is a gun lifting signal, there is a current signal at the output terminal of the oil pump circuit breaker 2, and there is a voltage signal at the output terminal of the AC contactor 3.

[0048] Submersible oil pump starting failure: there is a gun lifting signal, there is no current signal at the output terminal of the oil pump circuit breaker 2, and there is a voltage signal at the output terminal of the AC contactor 3.

[0049] Submersible oil pump maintenance status: In the maintenance status, the oil pump circuit breaker 2 is disconnected, and there is no voltage signal at the incoming terminal of the AC contactor 3; in the working status, the oil pump circuit breaker 2 is closed, and there is a voltage signal at the incoming terminal of the AC contactor 3.

[0050] AC contactor 3 not closed fault: there is a gun lifting signal, there is a voltage signal at the input end of AC contactor 3, and there is no voltage signal at the output end.

[0051] AC contactor 3 is not disconnected: there is no gun lifting signal, and there is both voltage signal and current signal at the input end of AC contactor 3.

[0052] Specifically, when the fuel nozzle is lifted from the fuel dispenser:

[0053] (1) If the first circuit and the oil pump 1 are both normal, the oil pump circuit breaker 2 is closed, and the AC contactor 3 is also in a closed state, then the first current signal collector 41, the first voltage signal collector 42, and the second voltage signal collector 43 can all collect corresponding signals.

[0054] If there is an abnormal situation, the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 can collect corresponding signals to determine whether the oil pump 1 and the monitoring component are faulty or in a maintenance state, for example:

[0055] (2) If the first voltage signal collector 42 and the second voltage signal collector 43 can collect voltage signals, but the first current signal collector 41 cannot collect current signals, it means that the oil pump 1 has a startup failure and the oil pump 1 is in an open circuit state.

[0056] (3) If the second voltage signal collector 43 can collect voltage signals, the first current signal collector 41 can collect current signals, but the first voltage signal collector 42 does not collect voltage signals, it indicates that the AC contactor 3 is faulty or the monitoring component is faulty.

[0057] (4) If the second voltage signal collector 43 can collect voltage signals, but the first current signal collector 41 and the first voltage signal collector 42 cannot collect corresponding signals, it means that the AC contactor 3 is faulty but the monitoring component is normal.

[0058] (5) If the first current signal collector 41 can collect current signals, the first voltage signal collector 42 can collect voltage signals, but the second voltage signal collector 43 cannot collect voltage signals, it means that the system is in maintenance state and the monitoring component is faulty.

[0059] (6) If the first voltage signal collector 42 can collect voltage signals, but the first current signal collector 41 and the second voltage signal collector 43 do not collect corresponding signals, it means that the system is in maintenance status and the monitoring component is faulty.

[0060] (7) If the first current signal collector 41 can collect current signals, but the first voltage signal collector 42 and the second voltage signal collector 43 cannot collect corresponding signals, it means that the system is in maintenance state and the monitoring component is faulty.

[0061] (8) If the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 do not collect corresponding signals, it means that they are in maintenance state and the monitoring components are normal.

[0062] When the nozzle is not lifted from the dispenser:

[0063] (9) If the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 can all collect corresponding signals, it means that the oil pump is operating abnormally and the AC contactor 3 is not disconnected.

[0064] (10) If the first voltage signal collector 42 and the second voltage signal collector 43 can collect voltage signals, but the first current signal collector 41 cannot collect current signals, it indicates that the AC contactor 3 is faulty or the monitoring component is faulty.

[0065] (11) If the second voltage signal collector 43 can collect voltage signals, the first current signal collector 41 can collect current signals, but the first voltage signal collector 42 does not collect voltage signals, it indicates that the AC contactor 3 is faulty or the monitoring component is faulty.

[0066] (12) If the second voltage signal collector 43 can collect voltage signals, but the first current signal collector 41 and the first voltage signal collector 42 cannot collect corresponding signals, it indicates that the oil pump is in standby mode.

[0067] (13) If the first current signal collector 41 can collect current signals, the first voltage signal collector 42 can collect voltage signals, but the second voltage signal collector 43 cannot collect voltage signals, it means that the system is in maintenance status and the monitoring component is faulty.

[0068] (14) If the first voltage signal collector 42 can collect voltage signals, but the first current signal collector 41 and the second voltage signal collector 43 do not collect corresponding signals, it means that the system is in maintenance status and the monitoring component is faulty.

[0069] (15) If the first current signal collector 41 can collect current signals, but the first voltage signal collector 42 and the second voltage signal collector 43 cannot collect corresponding signals, it means that the system is in maintenance state and the monitoring component is faulty.

[0070] (16) If the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 do not collect corresponding signals, it means that they are in maintenance status and the monitoring components are normal.

[0071] like Figure 2 As shown, in some optional embodiments, the refueling device also includes a refueling machine 5, which is connected to the power supply through a second circuit, and the refueling machine 5 is connected to the AC contactor 3 through a control line, and is used to control the opening and closing of the AC contactor 3 according to the gun lifting action.

[0072] In this example, a display screen is provided on the fuel dispenser 5 for displaying the amount of fuel and the amount of money. A position for placing a fuel gun is provided, and when the fuel gun is lifted or hung, the control element on the control circuit can be triggered, so that the control circuit can control the opening and closing of the AC contactor 3 according to the action of lifting the gun.

[0073] The fuel dispenser 5 is connected to the AC contactor 3 through a control circuit. When the fuel gun is lifted, the fuel dispenser 5 supplies power to the AC contactor 3 through the control circuit, so that the AC contactor 3 is closed; when the fuel gun is placed on the fuel dispenser 5, the fuel dispenser 5 disconnects the power supply to the AC contactor 3 through the control circuit, and the AC contactor 3 is disconnected.

[0074] Preferably, the control circuit includes a third circuit for connecting the AC contactor 3 and the power supply end of the fuel dispenser 5. The third circuit is provided with a fuel gun auxiliary contact switch. The fuel gun auxiliary contact switch is closed when the gun is lifted and is connected to the monitoring component signal.

[0075] In this embodiment, a fuel gun auxiliary contact switch is provided at the position where the fuel gun is placed on the fuel pump 5. When the fuel gun is placed, the fuel gun auxiliary contact switch is disconnected, the fuel pump 5 disconnects the power supply to the relay, and disconnects the power supply to the AC contactor 3; when the fuel gun is lifted, the fuel gun auxiliary contact switch is closed, and the fuel pump 5 supplies power to the AC contactor 3 through the third circuit.

[0076] Preferably, the auxiliary contact switch of the fueling gun is connected to the monitoring component signal through a gun raising signal collector, and the gun raising signal collector is used to collect the opening and closing signal of the auxiliary contact switch of the fueling gun and transmit the signal to the monitoring component.

[0077] In this example, a plurality of refueling guns may be provided on each refueling machine 5, each refueling gun is provided with a refueling gun auxiliary contact switch, and a plurality of refueling gun auxiliary contact switches are provided in parallel, such as Figure 3 K01, K02, K03 and K04 are arranged in parallel. When any auxiliary contact switch of the fueling gun is closed, the gun signal collector can collect the closing signal. Similarly, the fueling machine 5 can supply power to the AC contactor 3 through the third circuit to close the AC contactor 3.

[0078] The monitoring component receives the opening and closing information of the auxiliary contact switch of the fueling gun to feedback whether the gun is lifted on the monitoring component. Based on the signals uploaded to the monitoring component by the auxiliary contact switch of the gun, the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43, the status of the fuel pump 1 and the AC contactor 3 are fed back, as shown in the following table:

[0079]

[0080] Preferably, the fuel dispenser 5 is provided with an emergency power-off switch, and the second circuit is provided with a second current and voltage monitoring component for monitoring the current and voltage on the second circuit and connected to the monitoring component signal.

[0081] In this example, when the on-site personnel encounter an emergency, after pressing the emergency power-off switch on the fuel dispenser 5, the second circuit is disconnected. Therefore, a second current and voltage monitoring component is set on the second circuit, and the current and voltage on the second circuit monitored are transmitted to the embedded edge computing device. The embedded edge computing device determines the operating status of the fuel dispenser 5 by obtaining the current and voltage on the second circuit, and transmits the judgment result to the host computer. The host computer stores and displays the judgment result. When there is an abnormal situation, an alarm prompt can also be given, or the collected current and voltage information can be directly displayed on the display. The monitoring component is set in the remote monitoring room to realize remote monitoring of the on-site fuel dispenser 5. The second current and voltage monitoring component is set on each second circuit connected to the fuel dispenser 5, and the monitored current and voltage information is uploaded to the monitoring component, so that remote monitoring of multiple fuel dispensers 5 can be realized.

[0082] In some optional embodiments, the second current and voltage monitoring component includes a second current signal collector 61 and a third voltage signal collector 62 disposed on the second circuit.

[0083] In this example, a fuel dispenser circuit breaker 7 is provided on the second circuit, a second current signal collector 61 is provided on the second circuit between the fuel dispenser circuit breaker 7 and the power supply, and a third voltage signal collector 62 is provided on the second circuit between the fuel dispenser circuit breaker 7 and the fuel dispenser 5.

[0084] The collected current, voltage and gun-raising signals are judged and processed using embedded edge computing devices, and the judgment results are uploaded to the host computer.

[0085] According to the setting positions of the second current signal collector 61 and the third voltage signal collector 62, the second current signal collector 61 and the third voltage signal collector 62 present different current and voltage signals when the fuel dispenser 5 and the monitoring component are in different operating states:

[0086] The running state of the fuel dispenser: the second current signal collector 61 has a current signal, and the third voltage signal collector 62 has a voltage signal, that is, the input end of the fuel dispenser circuit breaker 7 has a current signal, and the output end has a voltage signal.

[0087] Fuel dispenser maintenance status: the second current signal collector 61 has no current signal, the third voltage signal collector 62 has no voltage signal, that is, the fuel dispenser circuit breaker 7 has no current signal at the input end and no voltage signal at the output end.

[0088] Emergency stop state of the fuel dispenser: the second current signal collector 61 has no current signal, and the third voltage signal collector 62 has a voltage signal, that is, there is no current signal at the input end of the fuel dispenser circuit breaker 7, and there is a voltage signal at the output end.

[0089] The following is a specific fuel dispenser status monitoring table:

[0090]

[0091] When implementing this solution, the data of the multi-channel signal collector is received according to the design of different gas stations, the data of the current and voltage signal collector and the gun signal collector are received, the characteristic values ​​of the equipment electrical signals are received and recorded, the data is processed and the alarm and control signals are output, and the data is transmitted to the monitoring component. The monitoring component determines the operating status of the gas station equipment according to the received data signal. Specifically, the embedded edge computing device determines the operating status of the gas station equipment according to the received data signal, and transmits the judgment result to the host computer. The host computer stores and displays the judgment result, and can also give an alarm prompt when there is an abnormal situation.

[0092] In addition, the oil pump 1 will feedback different voltage and current values ​​under different operating conditions, such as dry-running and blocked-rotor. Dry-running will feedback the corresponding dry-running current, and blocked-rotor will feedback the corresponding blocked-rotor current.

[0093] Dry-running current refers to the current generated by the submersible pump when it is running without any load. In this case, the output power of the submersible pump is zero, but it still needs to overcome some internal resistance, such as the friction resistance of the iron core and bearings, so the current is relatively small, usually only 10%-30% of the rated current.

[0094] The stall current refers to the current generated in the stator winding when the rotor of the submersible pump is blocked. This current is usually larger than the current in normal operation, because the motor needs a larger current to generate enough torque to overcome the resistance in the stalled state. The magnitude of the stall current depends on the design and working conditions of the motor. Generally, the stall current will be several times larger than the rated current. The specific value depends on the specific model and specifications of the motor.

[0095] Running time monitoring: There is a gun-lifting signal for a long time, and at the same time there is a voltage signal and a current signal in front of the AC contactor. In case of timeout, local and remote alarms will be provided.

[0096] The monitoring component can monitor and warn the oil pump 1 of the following operating conditions based on the specific values ​​of the detected current and voltage:

[0097] When the monitored voltage is less than the rated voltage of oil pump 1, the monitoring component issues an undervoltage alarm.

[0098] When the monitored current is greater than the first set multiple of the rated current of the oil pump 1, an overload alarm is issued.

[0099] When the monitored current is greater than the second set multiple of the rated current of the oil pump 1, a stall alarm is issued, and the first set multiple is greater than the second multiple, and greater than 1; in this example, the first set multiple is 2, and the second set multiple is 1.5.

[0100] When the monitored current is less than the third set multiple of the rated current of the oil pump 1, a dry run alarm is issued, and the third set multiple is less than 1; in this example, the third set multiple is 0.25-0.5.

[0101] The first setting multiple, the second setting multiple and the third setting multiple are configured according to different types of oil pump parameters.

[0102] The following example takes the oil pump 1 with a rated voltage of 180V and a rated current of 8A:

[0103] Submersible pump undervoltage alarm: The submersible pump operating voltage is lower than 180V.

[0104] Submersible oil pump overload alarm: The operating current of the submersible oil pump is higher than 16A.

[0105] Submersible oil pump dry running alarm: The operating current of the submersible oil pump is lower than 2A.

[0106] Submersible oil pump jam alarm: The operating current of the submersible oil pump is higher than 12A.

[0107] In a second aspect, the present invention also provides a submersible pump control cabinet monitoring device, comprising: a first current and voltage monitoring component and a monitoring component. The first current and voltage monitoring component is used to be arranged on a first circuit connecting the oil pump 1 and the power supply to monitor the current and voltage on the first circuit; the monitoring component is connected to the first current and voltage monitoring component by signal, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to judge and display the equipment operation status obtained based on the current and voltage information.

[0108] By setting a first current and voltage monitoring component on the first circuit connecting the oil pump 1 and the power supply, the current and voltage on the first circuit are monitored, and the current and voltage information on the first circuit is uploaded to the monitoring component, and the monitoring component displays the current and voltage information monitored by the current and voltage monitoring component, or judges and displays the equipment operation status obtained according to the current and voltage information. Remote monitoring of whether the oil pump 1 is abnormal can be achieved, avoiding the failure to report fault information in time when there is a fault on site, and improving the safety of on-site equipment.

[0109] In some optional embodiments, the first current and voltage monitoring component includes: a first current signal collector 41, a first voltage signal collector 42 and a second voltage signal collector 43, the first current signal collector 41 is arranged between the oil pump circuit breaker 2 and the AC contactor 3 on the first circuit; the first voltage signal collector 42 is arranged on the first circuit between the AC contactor 3 and the oil pump 1; the second voltage signal collector 43 is arranged on the first circuit between the oil pump circuit breaker 2 and the AC contactor 3.

[0110] Based on the above settings, by whether the first current signal collector 41, the first voltage signal collector 42 and the second voltage signal collector 43 can collect the corresponding signals, it can be determined whether the oil pump 1 and the monitoring component have a fault, are in a maintenance state, or are in a normal state. According to the setting position of the oil pump circuit breaker 2 and the AC contactor 3 on the first circuit, the oil pump 1 and the monitoring component have different current and voltage signals at different positions on the first circuit under different operating conditions. For specific methods, refer to the above-mentioned oil pump and AC contactor status monitoring table.

[0111] Preferably, the submersible pump control cabinet monitoring device also includes a second current and voltage monitoring component, which is arranged on a second circuit for connecting the fuel dispenser 5 with the power supply, is used to monitor the current and voltage on the second circuit, and is connected to the monitoring component signal.

[0112] When the on-site personnel encounter an emergency, after pressing the emergency power-off switch on the fuel dispenser 5, the second circuit is disconnected. Therefore, a second current and voltage monitoring component is set on the second circuit, and the current and voltage on the second circuit monitored are transmitted to the monitoring component. The operating status of the fuel dispenser 5 can be determined by the current and voltage on the second circuit displayed on the monitoring component. The monitoring component is set in the remote monitoring room to realize remote monitoring of the on-site fuel dispenser 5. The second current and voltage monitoring component is set on each second circuit connected to the fuel dispenser 5, and the monitored current and voltage information is uploaded to the monitoring component, so that multiple fuel dispensers 5 can be remotely monitored.

[0113] Preferably, the second current and voltage monitoring component includes a second current signal collector 61 and a third voltage signal collector 62 which are arranged on the second circuit.

[0114] According to the setting positions of the second current signal collector 61 and the third voltage signal collector 62, the second current signal collector 61 and the third voltage signal collector 62 present different current and voltage signals under different operating conditions of the fuel dispenser 5 and the monitoring component. For specific methods, please refer to the above fuel dispenser status monitoring table.

[0115] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0116] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0117] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A refueling device, characterized in that: include: An oil pump (1) connected to a power supply via a first circuit; A first current and voltage monitoring component, which is provided on the first circuit and is used to monitor the current and voltage on the first circuit; A monitoring component is signal-connected to the first current and voltage monitoring component, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to determine and display the equipment operating status obtained based on the current and voltage information.

2. The refueling device according to claim 1, characterized in that: The first circuit is provided with an oil pump circuit breaker (2) and an AC contactor (3) in sequence from the power supply to the oil pump (1), and the first current and voltage monitoring component comprises: A first current signal collector (41), which is arranged on the first circuit between the oil pump circuit breaker (2) and the AC contactor (3); a first voltage signal collector (42), which is arranged on the first circuit between the AC contactor (3) and the oil pump (1); A second voltage signal collector (43) is provided on the first circuit between the oil pump circuit breaker (2) and the AC contactor (3).

3. The refueling device according to claim 2, characterized in that: The invention also comprises a fuel dispenser (5), which is connected to a power supply via a second circuit. The fuel dispenser (5) is connected to the AC contactor (3) via a control circuit. The control circuit comprises a third circuit for connecting the AC contactor (3) to a power supply end of the fuel dispenser (5). The third circuit is provided with a fuel dispenser gun auxiliary contact switch. The fuel dispenser gun auxiliary contact switch is closed when the fuel dispenser gun is lifted and is connected to the monitoring component signal.

4. The refueling device according to claim 3, characterized in that: The auxiliary contact switch of the refueling gun is connected to the monitoring component signal through a gun-lifting signal collector, and the gun-lifting signal collector is used to collect the opening and closing signals of the auxiliary contact switch of the refueling gun and transmit the signals to the monitoring component.

5. The refueling device according to claim 3, characterized in that: The fuel dispenser (5) is provided with an emergency power-off switch, and the second circuit is provided with a second current and voltage monitoring component, which is used to monitor the current and voltage on the second circuit and is connected to the monitoring component signal.

6. The refueling device according to claim 5, characterized in that: The second current and voltage monitoring component comprises a second current signal collector (61) and a third voltage signal collector (62) arranged on the second circuit.

7. A submersible pump control cabinet monitoring device, characterized in that: include: A first current and voltage monitoring component, which is arranged on a first circuit connecting the oil pump (1) and a power supply to monitor the current and voltage on the first circuit; A monitoring component is signal-connected to the first current and voltage monitoring component, and is used to display the current and voltage information on the first circuit monitored by the first current and voltage monitoring component, or to determine and display the equipment operating status obtained based on the current and voltage information.

8. The submersible pump control cabinet monitoring device according to claim 7, characterized in that: The first current and voltage monitoring component comprises: A first current signal collector (41) is provided between the oil pump circuit breaker (2) and the AC contactor (3) on the first circuit; a first voltage signal collector (42), which is arranged on the first circuit between the AC contactor (3) and the oil pump (1); A second voltage signal collector (43) is provided on the first circuit between the oil pump circuit breaker (2) and the AC contactor (3).

9. The submersible pump control cabinet monitoring device according to claim 7, characterized in that: It also includes a second current and voltage monitoring component, which is arranged on a second circuit for connecting the fuel dispenser (5) with a power supply, is used to monitor the current and voltage on the second circuit, and is connected to the monitoring component signal.

10. The submersible pump control cabinet monitoring device according to claim 9, characterized in that: The second current and voltage monitoring component comprises a second current signal collector (61) and a third voltage signal collector (62) arranged on the second circuit.

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