Self-mixing synchronous fuel oil filling system

Abstract

The invention relates to a fuel oil filling system, in particular to a self-mixing synchronous fuel oil filling system which solves the technical problems that an existing fuel oil filling system is complex in operation, the filling proportion of all components in mixed fuel oil is difficult to adjust, and synchronous filling and automatic uniform mixing are difficult to achieve. According to the self-mixing synchronous fuel oil filling system, main fuel oil directly enters the centrifugal pump set, auxiliary fuel oil synchronously enters the centrifugal pump set through the filling pump set, the main fuel oil and the auxiliary fuel oil are mixed in the centrifugal pump set, and self-mixing synchronous filling of the main fuel oil and the auxiliary fuel oil is achieved; meanwhile, the flow of the auxiliary fuel oil is adjusted by controlling the rotating speeds of the centrifugal pump set and the filling pump set, so that the mixing proportion of the main fuel oil and the auxiliary fuel oil is adjusted under any flow, and the operation is simple and convenient; the flow of the mixed fuel oil can be adjusted by controlling the rotating speed of the centrifugal pump set and the opening degree of the adjusting valve.

Description

Technical Field

[0001] This invention relates to fuel dispensing systems, and more specifically to a self-mixing synchronous fuel dispensing system. Background Technology

[0002] Currently used fuel filling systems typically employ a single filling pump to first add the fuel to be mixed into a container or dedicated mixer, and then add the mixed fuel to the required equipment. This method requires pre-calculating the volume of each component in the mixed fuel according to a preset ratio, and then adding the solution of each component of the mixed fuel into the mixing container according to the volume. The entire operation is relatively complex, and the proportion of each component added in the mixed fuel is constant and cannot be modified. It is also difficult to achieve synchronous addition and automatic uniform mixing of the components of the mixed fuel. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problems of existing fuel refueling systems being complex to operate, and the difficulty in adjusting the refueling ratio of each component in the mixed fuel and achieving synchronous refueling and automatic uniform mixing, and to provide a self-mixing synchronous fuel refueling system.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A self-mixing synchronous fuel dispensing system is characterized by comprising a centrifugal pump set, a first flow meter and a controller, as well as N dispensing pump sets and N second flow meters, wherein N is an integer and N≥1; The inlet of the centrifugal pump unit serves as the main fuel inlet, which is used to connect to the main fuel tank containing the main fuel. The first flow meter is installed on the inlet pipe of the centrifugal pump unit to measure the flow rate of the main fuel. The inlets of the N refueling pump sets serve as auxiliary fuel inlets, which are respectively connected to auxiliary fuel tanks containing N different types of auxiliary fuel. The outlets of the N refueling pump sets are respectively connected to the pipeline between the first flow meter and the inlet of the centrifugal pump set. N second flow meters are respectively installed on the pipeline between the outlet of N refueling pump sets and the inlet of the centrifugal pump set, and are used to measure the flow rate of the corresponding auxiliary fuel respectively; The outlet of the centrifugal pump set serves as the mixed fuel outlet, which is used to connect to the fuel supply equipment. The centrifugal pump set is used to mix the main fuel with N kinds of auxiliary fuels to obtain mixed fuel and to deliver the mixed fuel. The input terminal of the controller is connected to the output terminals of the first flow meter and N second flow meters respectively, and the output terminal is connected to the control terminals of the centrifugal pump group and N refueling pump groups respectively. It is used to control the speed of the centrifugal pump group and N refueling pump groups according to the flow rate of the main fuel and N auxiliary fuels, thereby adjusting the ratio of the main fuel and N auxiliary fuels, and controlling the speed of the centrifugal pump group to adjust the flow rate of the mixed fuel.

[0005] Furthermore, it also includes a refueling nozzle, the inlet of which is connected to the outlet of the centrifugal pump unit, the outlet of which is used to connect to the fuel supply device, and the refueling nozzle is used to refuel the mixed fuel.

[0006] Furthermore, it also includes a regulating valve, which is installed on the outlet pipeline of the centrifugal pump set. Its control end is connected to the output end of the controller to control the flow rate of the mixed fuel and the output pressure of the mixed fuel.

[0007] Furthermore, it also includes a pressure sensor, which is installed on the outlet pipeline of the centrifugal pump unit and located at the rear end of the regulating valve. The output end of the pressure sensor is connected to the input end of the controller.

[0008] Furthermore, the filling pump assembly includes a filling pump and a permanent magnet motor; The control terminal of the permanent magnet motor is connected to the output terminal of the controller, and the output shaft is connected to the drive shaft of the filling pump; the inlet of the filling pump is used to connect to the auxiliary fuel tank containing auxiliary fuel, and the outlet is connected to the pipeline between the first flow meter and the inlet of the centrifugal pump group.

[0009] Furthermore, the centrifugal pump assembly includes a centrifugal pump and a variable frequency motor; The control terminal of the variable frequency motor is connected to the output terminal of the controller, and the output shaft is connected to the drive shaft of the centrifugal pump; the inlet of the centrifugal pump is used to connect to the main fuel tank containing the main fuel, and the outlet is used to connect to the fuel supply equipment.

[0010] Furthermore, it also includes a speed sensor mounted on the drive shaft of the centrifugal pump, with the output of the speed sensor connected to the input of the controller.

[0011] Furthermore, the centrifugal pump is made of aluminum alloy.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a self-mixing synchronous fuel filling system in which the main fuel directly enters the centrifugal pump group, and the auxiliary fuel enters the centrifugal pump group synchronously through the filling pump group. The main fuel and the auxiliary fuel are mixed in the centrifugal pump group, thereby realizing the self-mixing synchronous filling of the main fuel and the auxiliary fuel. 2. The present invention provides a self-mixing synchronous fuel filling system. The controller adjusts the flow rate of auxiliary fuel by controlling the rotation speed of the centrifugal pump group and the filling pump group, thereby realizing the adjustment of the mixing ratio of main fuel and auxiliary fuel at any flow rate. The operation is simple. 3. The present invention provides a self-mixing synchronous fuel dispensing system in which the controller adjusts the flow rate of the mixed fuel by controlling the rotation speed of the centrifugal pump set; 4. The self-mixing synchronous fuel dispensing system provided by the present invention has a regulating valve installed at the outlet of the centrifugal pump group, which can further increase the adjustment range of the mixed fuel flow rate; 5. The present invention provides a self-mixing synchronous fuel filling system, wherein the filling pump group is driven by a permanent magnet motor, and its speed adjustment response time is only 5ms, which can further ensure that the main fuel and auxiliary fuel enter the centrifugal pump group synchronously. 6. The present invention provides a self-mixing synchronous fuel filling system. The centrifugal pump group adopts a centrifugal pump. The centrifugal impeller in the centrifugal pump can not only transport fuel, but also act as a mixer to stir and mix various fuels to be mixed evenly. 7. The self-mixing synchronous fuel filling system provided by the present invention uses a lightweight and high-hardness aluminum alloy as the material of the centrifugal pump set, which can reduce the weight and volume of the system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention; The annotations in the attached figures are explained as follows: 1-Refueling pump set, 2-Centrifugal pump set, 3-First flow meter, 4-Second flow meter, 5-Refueling nozzle, 6-Regulating valve, 7-Controller, 8-Main fuel inlet, 9-Auxiliary fuel inlet, 10-Mixed fuel outlet. Detailed Implementation

[0014] To make the objectives, advantages and features of the present invention clearer, the following describes in further detail a self-mixing synchronous fuel dispensing system proposed by the present invention in conjunction with the accompanying drawings and specific embodiments.

[0015] A self-mixing synchronous fuel dispensing system, such as Figure 1 , Figure 2 As shown, the system includes a centrifugal pump assembly 2, a first flow meter 3, a refueling nozzle 5, a regulating valve 6, and a controller 7, as well as a refueling pump assembly 1 and a second flow meter 4. The centrifugal pump assembly 2 includes a centrifugal pump and a variable frequency motor, with the output shaft of the variable frequency motor connected to the drive shaft of the centrifugal pump. The inlet of the centrifugal pump serves as the main fuel inlet 8, connecting to the main fuel tank containing the main fuel. The first flow meter 3 is installed on the inlet pipe of the centrifugal pump to measure the flow rate of the main fuel.

[0016] The refueling pump assembly 1 includes a refueling pump and a permanent magnet motor. The output shaft of the permanent magnet motor is connected to the drive shaft of the refueling pump. The inlet of the refueling pump serves as the auxiliary fuel inlet 9, which is used to connect to an auxiliary fuel tank containing auxiliary fuel. The outlet of the refueling pump is connected to the pipeline between the first flow meter 3 and the inlet of the centrifugal pump. The second flow meter 4 is installed on the pipeline between the outlet of the refueling pump and the inlet of the centrifugal pump assembly 2, and is used to measure the flow rate of the auxiliary fuel.

[0017] The outlet of the centrifugal pump serves as the mixed fuel outlet 10, connected to the inlet of the fuel nozzle 5. A regulating valve 6 is installed on the outlet pipeline of the centrifugal pump, with its control terminal connected to the output terminal of the controller 7. The centrifugal pump is used to mix the primary fuel and auxiliary fuel to obtain mixed fuel, and to deliver the mixed fuel. The outlet of the fuel nozzle 5 is connected to the fuel dispensing equipment, and the fuel nozzle 5 is used to dispense the mixed fuel. The regulating valve 6 controls the flow rate and output pressure of the mixed fuel.

[0018] The input terminal of the controller 7 is connected to the output terminals of the first flow meter 3 and the second flow meter 4 respectively, and the output terminal is connected to the control terminals of the variable frequency motor, the permanent magnet motor and the regulating valve 6 respectively. It is used to control the speed of the variable frequency motor and the permanent magnet motor according to the flow rate of the main fuel and the auxiliary fuel, thereby adjusting the ratio of the main fuel and the auxiliary fuel, and controlling the speed of the variable frequency motor and the opening of the regulating valve 6, thereby adjusting the flow rate of the mixed fuel.

[0019] To monitor the operating status of centrifugal pump group 2 and filling pump group 1, this embodiment installs a pressure sensor on the pipeline between regulating valve 6 and filling nozzle 5, and a speed sensor on the centrifugal pump drive shaft to monitor pressure and speed. The outputs of both the pressure sensor and the speed sensor are connected to the input of controller 7. To reduce system size, in this embodiment, the centrifugal pump, as well as the pipelines between the main oil tank and the centrifugal pump, the auxiliary oil tank and the filling pump, and the filling pump and the centrifugal pump, are all made of aluminum alloy, while the pipeline between the centrifugal pump and the filling nozzle is made of rubber.

[0020] like Figure 2As shown, this embodiment provides a self-mixing synchronous fuel dispensing system. A centrifugal pump unit 2, a first flow meter 3, a second flow meter 4, a regulating valve 6, and a controller 7 are mounted on a skid of a movable trolley. Two fuel inlets are provided: a main fuel inlet 8 and an auxiliary fuel inlet 9, and one fuel outlet: a mixed fuel outlet 10. The main fuel inlet 8 and the auxiliary fuel inlet 9 are the inlets of the centrifugal pump unit 2 and the dispensing pump unit 1, respectively, while the mixed fuel outlet 10 is the outlet of the centrifugal pump unit 2. The centrifugal pump unit 2 and the dispensing pump unit 1 operate in series. The main fuel and auxiliary fuel enter the centrifugal pump unit 2 synchronously through its inlet. The impeller inside the centrifugal pump unit 2 agitates and mixes the fuel evenly, and finally, the mixture is dispensed into the fuel supply device through the fuel nozzle 6.

[0021] This embodiment provides a self-mixing synchronous fuel dispensing system that can adjust the dispensing flow rate of the fuel supply device and the mixing ratio of the main fuel and auxiliary fuel under any main fuel flow rate, without the need for a separate fuel mixing container. At the same time, by using a method of mixing and dispensing simultaneously, it avoids the problems of fuel deterioration or evaporation when mixing fuel in advance, or the impact on refueling progress and time caused by mixing it at the time of use.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A self-blending co-synchronous fuel dispensing system, characterized by: The centrifugal pump group (2), the first flowmeter (3) and the controller (7), and N filling pump groups (1) and N second flowmeters (4) are included, wherein N is an integer and N≥1; The inlet of the centrifugal pump group (2) is used as a main fuel inlet (8) for connecting a main fuel tank containing main fuel, and the first flowmeter (3) is arranged on the inlet pipeline of the centrifugal pump group (2) for measuring the flow of the main fuel; The inlets of the N filling pump groups (1) are used as auxiliary fuel inlets (9) for respectively connecting N auxiliary fuel tanks containing N different auxiliary fuels, and the outlets of the N filling pump groups (1) are respectively connected to the pipeline between the first flowmeter (3) and the inlet of the centrifugal pump group (2). The N second flowmeters (4) are respectively arranged on the pipeline between the outlets of the N filling pump groups (1) and the inlet of the centrifugal pump group (2) for respectively measuring the flow of the corresponding auxiliary fuel. The outlet of the centrifugal pump group (2) is used as a mixed fuel outlet (10) for connecting a fuel dispensing device, and the centrifugal pump group (2) is used for mixing the main fuel and the N auxiliary fuels to obtain mixed fuel and for delivering the mixed fuel. The input end of the controller (7) is respectively connected to the output ends of the first flowmeter (3) and the N second flowmeters (4), and the output end is respectively connected to the control ends of the centrifugal pump group (2) and the N filling pump groups (1), for controlling the rotating speeds of the centrifugal pump group (2) and the N filling pump groups (1) according to the flows of the main fuel and the N auxiliary fuels, thereby adjusting the proportions of the main fuel and the N auxiliary fuels, and for controlling the rotating speed of the centrifugal pump group (2), thereby adjusting the flow of the mixed fuel.

2. The self-mixing synchronization fueling system of claim 1, wherein: The fuel dispensing gun (5) is further included, the inlet of the fuel dispensing gun (5) is connected to the outlet of the centrifugal pump group (2), the outlet of the fuel dispensing gun (5) is used for connecting a fuel dispensing device, and the fuel dispensing gun (5) is used for filling the mixed fuel.

3. The self-mixing synchronization fueling system of claim 2, wherein: The regulating valve (6) is further included, the regulating valve (6) is arranged on the outlet pipeline of the centrifugal pump group (2), the control end of the regulating valve (6) is connected to the output end of the controller (7), and the regulating valve (6) is used for controlling the flow of the mixed fuel and the output pressure of the mixed fuel.

4. The self-mixing synchronization fueling system of claim 3, wherein: The pressure sensor is further included, the pressure sensor is arranged on the outlet pipeline of the centrifugal pump group (2) and located at the rear end of the regulating valve (6), and the output end of the pressure sensor is connected to the input end of the controller (7).

5. The self-mixing co-synchronous refueling system according to any of claims 1-4, characterized in that: The filling pump group (1) includes a filling pump and a permanent magnet motor; The control end of the permanent magnet motor is connected to the output end of the controller (7), and the output shaft is connected to the driving shaft of the filling pump; the inlet of the filling pump is used for connecting an auxiliary fuel tank containing auxiliary fuel, and the outlet is connected to the pipeline between the first flowmeter (3) and the inlet of the centrifugal pump group (2).

6. The self-mixing synchronization fueling system of claim 5, wherein: The centrifugal pump group (2) includes a centrifugal centrifugal pump and a variable frequency motor; The control end of the variable frequency motor is connected to the output end of the controller (7), and the output shaft is connected to the driving shaft of the centrifugal centrifugal pump; the inlet of the centrifugal centrifugal pump is used for connecting a main fuel tank containing main fuel, and the outlet is used for connecting a fuel dispensing device.

7. The self-mixing synchronization fueling system of claim 6, wherein: The rotating speed sensor arranged on the driving shaft of the centrifugal centrifugal pump is further included, and the output end of the rotating speed sensor is connected to the input end of the controller (7).

8. The self-mixing synchronization fueling system of claim 7, wherein: The centrifugal pump is made of aluminum alloy.

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