WO2016068358A1

WO2016068358A1 - Liquid fuel supply device

Info

Publication number: WO2016068358A1
Application number: PCT/KR2014/010313
Authority: WO
Inventors: 황상문; 이성무; 정은미; 양정욱
Original assignee: 주식회사 프로파워
Priority date: 2014-10-29
Filing date: 2014-10-30
Publication date: 2016-05-06
Also published as: KR20160050473A

Abstract

A liquid fuel supply device is provided. A liquid fuel supply device (100), according to one embodiment of the present invention, is a device for supplying liquid fuel to a liquid fuel tank (200), which is included in a power pack of a fuel cell system generally using liquid fuel, and can include a storage module (110), a pump module (120), an injection module (130), a return valve (140), a driving module (150), an air inlet (160) and a sensor connector (170). According to the liquid fuel supply device of the embodiment of the present invention, the liquid fuel can be continuously and stably supplied to the liquid fuel tank for a fuel cell, the supply of the liquid fuel can be controlled by sensing the full level of the liquid fuel tank and, when the liquid fuel supply device separates from the liquid fuel tank, the leakage of the liquid fuel can be prevented by collecting all the liquid fuel, remaining in a pipe, by opening the return valve.

Description

Liquid fuel supply

The present invention relates to a liquid fuel supply device, and more particularly, to a liquid fuel supply device for supplying a liquid fuel to a liquid fuel tank for a fuel cell.

In recent years, where there is no grid network or lack of electric power, there are many places that produce a necessary power by using a fuel cell instead of a diesel generator. Such a diesel generator not only takes a lot of maintenance costs due to the rising price of diesel oil, but also causes environmental problems due to noise and gas emissions, and there is a problem that it cannot be operated continuously for a long time.

In order to solve such a problem, research and development of a new energy source that can be used longer than an existing diesel generator and which is more environmentally friendly, is underway, and a representative example thereof is a fuel cell. The fuel cell reforms liquid fuels such as gasoline, diesel, and methanol in a direct methanol fuel cell (DMFC) that directly uses methanol fuel, and in an environment in which it is difficult to directly supply hydrogen gas. Proton Exchange Membrane Fuel Cell (PEMFC), Molten Carbonate Fuel Cell (MCFC), Solid Oxide Fuel Cell (SOFC) requiring a fuel conversion process to supply hydrogen gas Cell) and Phosphoric Acid Fuel Cell (PAFC).

On the other hand, fuel cells using liquid fuel require a tank for storing liquid fuel, and the size of the liquid fuel tank is limited, which makes it difficult to continuously operate the fuel cell for a long time. Therefore, there is a need for a liquid fuel supply device capable of stably supplying liquid fuel to such a liquid fuel tank.

The problem to be solved by the present invention in order to solve the above problems is to prevent the leakage of liquid fuel, which is a dangerous material, to improve the safety of the user, and at the same time, the liquid fuel that can continuously supply the liquid fuel to the fuel cell for fuel cells It is to provide a fuel supply device.

Another problem to be solved by the present invention is to provide a liquid fuel supply device that can control the supply of liquid fuel by sensing the level of the liquid fuel tank, and can recover all the liquid fuel remaining in the pipe.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Liquid fuel supply apparatus according to an embodiment of the present invention for achieving the above technical problem, a storage module for storing the liquid fuel; A pump module connected to the storage module and a pipe and pumping the liquid fuel stored in the storage module to an external liquid fuel tank; And an injection module connected to the pump module by a pipe and injecting the liquid fuel pumped by the pump module into the liquid fuel tank.

Liquid fuel supply apparatus according to an embodiment of the present invention, when the injection into the liquid fuel tank is completed or stopped, the return valve which is automatically opened to recover the remaining liquid fuel in the pipe to the storage module It may further include.

In addition, the return valve is located at one point of the pipe connecting the storage module and the injection module, it is preferable that the pump module is connected in parallel.

Liquid fuel supply apparatus according to an embodiment of the present invention further comprises a drive module for driving the pump module, the drive module, explosion-proof motor that can prevent a fire or explosion due to the liquid fuel, and the It can be configured as a motor drive for driving the explosion-proof motor.

In addition, the storage module may be provided with a rubber stopper for sealing a portion through which the pipe passes to prevent leakage of the liquid fuel.

In addition, the injection module, it is preferable to form a coupler coupling with the injection port provided in the liquid fuel tank which is a passage for receiving the liquid fuel from the injection module.

In addition, the storage module may be connected to a pipe and an air inlet which is a passage for introducing the air discharged from the air outlet which is a passage for discharging the air inside the liquid fuel tank, the air inlet is coupled to the air outlet and the coupler It is desirable to achieve.

The driving module may further include a sensor connector coupled with a level sensor for sensing the level of the liquid fuel filled with the liquid fuel tank.

The driving module may stop the operation of the pump module by receiving a detection signal of the water level sensor through the sensor connector when the liquid fuel is filled to a predetermined level in the liquid fuel tank.

In addition, the pump module, it is preferable to provide a pump flow rate in the range of 5 to 60 L / min.

Liquid fuel supply apparatus according to an embodiment of the present invention, the housing surrounding the storage module, the pump module and the drive module; And a moving module installed at a lower portion of the housing and rotating to be movable.

In addition, the liquid fuel tank may be provided with a pressure control valve for adjusting the pressure inside.

On the other hand, the liquid fuel is preferably one selected from methanol, gasoline, kerosene, light oil, heavy oil, ethanol.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the liquid fuel supply apparatus according to the embodiment of the present invention as described above, one or more of the following effects exist.

First, the liquid fuel supply apparatus according to the embodiment of the present invention, it is possible to continuously and stably supply the liquid fuel to the fuel cell liquid fuel tank.

Second, the liquid fuel supply apparatus according to an embodiment of the present invention, by sensing the full water level of the liquid fuel tank can control the supply of the liquid fuel, by returning all the liquid fuel remaining in the interior of the return valve open, Separation from liquid fuel tanks can prevent leakage of liquid fuel.

Third, the liquid fuel supply apparatus according to an embodiment of the present invention, the injection module for injecting the liquid fuel to one side of the housing and the injection port provided in the liquid fuel tank is a coupler coupling, the air inlet provided on one side of the housing Coupled with the air outlet of the liquid fuel tank to maintain the atmospheric pressure build-up inside the liquid fuel tank, it is possible to fully improve the stability by preventing the leakage of liquid fuel during fuel injection.

Fourth, the liquid fuel supply apparatus according to the embodiment of the present invention can adjust the amount of liquid fuel per minute can be used according to the characteristics of the liquid fuel irrespective of the type of liquid fuel.

Fifth, the liquid fuel supply apparatus according to the embodiment of the present invention, by using an explosion-proof motor can prevent a fire or explosion that can occur if.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a block diagram of a liquid fuel supply apparatus according to an embodiment of the present invention.

2 is a view showing a liquid fuel tank receiving liquid fuel from a liquid fuel supply device according to an embodiment of the present invention.

Figure 3 is a front photograph showing the real of the liquid fuel supply apparatus according to an embodiment of the present invention.

Figure 4 is a side view showing the real of the liquid fuel supply apparatus according to an embodiment of the present invention.

Figure 5 is a photograph showing the inside of the liquid fuel supply apparatus according to an embodiment of the present invention.

Figure 6 is a photograph showing the real of the liquid fuel tank receiving the liquid fuel from the liquid fuel supply apparatus according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and are common in the art to which the present invention belongs. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions.

Hereinafter, in order to describe the present invention in more detail, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like elements throughout.

The liquid fuel supply device 100 shown in FIG. 1 is a device for supplying liquid fuel to a liquid fuel tank (to be described later in FIG. 2) contained in a power pack of a fuel cell system generally using liquid fuel. 110, a pump module 120, an injection module 130, a return valve 140, a drive module 150, an air inlet 160, and a sensor connector 170 may be configured.

First, the storage module 110 located at the bottom of the liquid fuel supply device 100 serves to store the liquid fuel to the external liquid fuel tank 200. Although the geometry of the drum for storing the liquid fuel is irrelevant, the upper end of the drum is provided with a rubber stopper (110A) can prevent the liquid fuel from leaking around the portion through which the pipe passes.

In addition, the number of drums constituting the storage module 110 may vary depending on the size of the housing 180, but two or more may be continuously arranged to supply liquid fuel continuously and stably.

The pump module 120 is connected to the drum and the pipe of the storage module 110 and may be pumped to supply the liquid fuel stored in the drum to an external space, that is, the liquid fuel tank 200. Without the pump module 120, it is not possible to smoothly supply the liquid fuel stored in the storage module 110 to the outside, it is preferable to use a high-pressure volumetric pump. Types of volumetric pumps generally include a gear pump for pressurizing the space between two rotating gear teeth, a vane pump for pushing and compressing the hydraulic oil using a vane installed on a rotating shaft, a screw pump, a piston pump, etc. There is, but is not limited to a specific kind.

In one embodiment of the present invention was carried out by employing a vane pump (vane pump), the minimum flow rate of the pump is preferably 5 L / min, the maximum flow rate is preferably set to 60 L / min. If it is less than 5 L / min, the liquid fuel supply is not smooth, if it is more than 60 L / min there is a risk of overload.

In order to drive the aforementioned pump module 120, the driving module 150 may be additionally installed. The drive module 150 may be configured of an explosion-proof motor 151 capable of preventing a fire or explosion due to liquid fuel, a motor drive 152 driving the explosion-proof motor 151, and the motor drive 152 may be a drive. Controlled by the controller 153, an on / off power switch (not shown) may be further coupled.

The liquid fuel drawn up from the drum of the storage module 110 by the pump module 120 moves through the connected pipe and is injected into the liquid fuel tank 200 through the injection module 130 present at the end of the pipe. do. That is, the injection module 130 is connected to the pump module 120 through a pipe, the liquid fuel pumped by the pump module 120 is the liquid fuel tank 200 through the inlet 230 of the liquid fuel tank 200 Is supplied. Here, the injection port 230, the passage for receiving the liquid fuel, and the injection module 130 of the liquid fuel supply device 100 form a coupler coupling to prevent leakage of the liquid fuel as compared to the conventional fuel injection type injection method. Can be.

On the other hand, when the injection into the liquid fuel tank 200 is completed or the injection is stopped in the middle, the liquid fuel remaining inside the pipe often leaks to the outside, there was a risk of fire. In order to prevent this, the return valve 140 which is automatically opened to recover the liquid fuel remaining in the pipe back to the drum of the storage module 110 may be additionally installed.

However, when the return valve 140 is installed at one point of the pipe in which the pump module 120 is installed, the recovery rate of the liquid fuel is lowered, so that the return valve 140 connects the storage module 110 and the injection module 130. Located at one point of the pipe to be, it is preferable that the pump module 120 is connected in parallel.

On the other hand, for convenience of description, the liquid fuel tank 200 that is the object of receiving the liquid fuel from the injection module 130 of the liquid fuel supply device 100 will be described with reference to FIG.

The liquid fuel tank 200 is generally present in a power pack of a fuel cell system mounted on a forklift, etc., and includes an air pressure control valve 210, an inlet 230, an air outlet 260, and a water level sensor 270. can do.

Atmospheric pressure control valve 210 serves to adjust the pressure of the inside of the liquid fuel tank 200 to prevent the vacuum and to maintain a stable atmospheric pressure. The pressure regulating valve 210 may be rotatable as shown in FIG. 2, but may be any shape that does not impede its function. In addition, the position where the air pressure regulating valve 210 is installed is also possible as shown in Figure 2, but may be installed on the front or side.

The injection port 230 performs a function of a passage for receiving liquid fuel from the injection module 130 shown in FIG. 1 and forms a coupler coupling with the injection module 130 to obtain an effect of preventing leakage of liquid fuel. have.

On the other hand, in order to maintain the atmospheric pressure of the internal air of the liquid fuel tank 200, it is necessary to discharge the internal air, the air outlet 260 serves as a passage for discharging the internal air of the liquid fuel tank 200. Thus, it may be discharged to the storage module 110 of the liquid fuel supply device 100 of FIG.

The level sensor 270 may detect the level of the liquid fuel filled inside the liquid fuel tank 200, and transmit the detected result to the liquid fuel supply device 100 of FIG. 1.

Referring back to FIG. 1, the air inlet 160 of the liquid fuel supply device 100 may serve as a passage through which the air inside the liquid fuel tank 200 enters the discharged air through the air outlet 260. In addition, the air introduced through the air inlet 160 enters the storage module 110 again along the pipe. At this time, the air inlet 160 and the air outlet 260 may be coupled to the coupler to prevent the leakage of the exhaust air.

The sensor connector 170 is coupled to the level sensor 270 which is provided in the liquid fuel tank 200 and detects the level of the liquid fuel filled, and the detection module drives the driving module 150 of the liquid fuel supply device 100. It can perform the function of transferring to.

That is, when the level sensor 270 detects the level of the liquid fuel is filled in the liquid fuel tank 200 and the liquid fuel tank 200 becomes full water level or when the liquid fuel is filled up to a predetermined level The motor drive 152 of the driving module 150 may receive the detection signal through the sensor connector 170 to stop the operation of the pump module 120.

On the other hand, the liquid fuel supply device 100 according to an embodiment of the present invention, as shown in Figure 1, the housing 180 surrounding the storage module 110, the pump module 120, and the drive module 150 It may be further provided, the lower portion of the housing 180 can be installed by moving module 190, such as wheels to enable movement and rotation of the front and rear, left and right.

In addition, the liquid fuel supplied by the above-described liquid fuel supply device 100 is one selected from methanol, ethanol, gasoline, kerosene, diesel, heavy oil used in the fuel cell. This is because the amount of liquid fuel per minute can be adjusted, so that the liquid fuel is not limited to a specific liquid fuel, and any liquid fuel can be applied to the liquid fuel supply device 100 of the present invention.

3 is a front photograph showing the real of the liquid fuel supply apparatus according to an embodiment of the present invention, Figure 4 is a side photograph of the liquid fuel supply apparatus.

The yellow appearance of FIGS. 3 and 4 is to inform the risk of flammability and volatility of the liquid fuel, and shows the housing 180 of the liquid fuel supply device 100, and four wheels, which are moving modules 190, are shown below. It can be seen that it is provided freely movable.

The two blue drums in the state in which the door is opened represent the storage module 110, the pipe connected to the injection module 130 and the pipe connected to the air inlet 160 through the rubber stopper (110A) of the left drum is It can be seen that it is inserted.

Since the liquid fuel tank shown in FIG. 6 has the same appearance and configuration as the liquid fuel tank shown in FIG. 2 described above, detailed description thereof will be omitted.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but it is only for the purpose of describing the present invention, and those skilled in the art to which the present invention pertains various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible. Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

The liquid fuel supply apparatus according to the embodiments of the present invention may prevent the leakage of liquid fuel, which is a dangerous substance, to improve the safety of the user, and may continuously supply the liquid fuel to the fuel cell liquid fuel tank.

Liquid fuel supply apparatus according to embodiments of the present invention can detect the level of the liquid fuel tank to control the supply of the liquid fuel, it is possible to recover all the remaining liquid fuel in the pipe.

Claims

A storage module for storing liquid fuel;

A pump module connected to the storage module and a pipe and pumping the liquid fuel stored in the storage module to an external liquid fuel tank; And

And an injection module connected to the pump module in a pipe and injecting the liquid fuel pumped by the pump module into the liquid fuel tank.
The method of claim 1,

And a return valve which is automatically opened to recover the liquid fuel remaining in the pipe to the storage module when the injection into the liquid fuel tank is completed or stopped.
The method of claim 2,

The return valve,

Located at one point of the pipe connecting the storage module and the injection module, the liquid fuel supply device connected in parallel with the pump module.
The method of claim 3, wherein

Further comprising a drive module for driving the pump module, wherein the drive module,

An explosion-proof motor that can prevent a fire or explosion due to the liquid fuel, and a motor drive for driving the explosion-proof motor, liquid fuel supply apparatus.
The method of claim 1,

The storage module,

And a rubber stopper for sealing a portion through which the pipe passes so as to prevent leakage of the liquid fuel.
The method of claim 4, wherein

The injection module,

And a coupler coupling with an injection hole provided in the liquid fuel tank, which is a passage through which the liquid fuel is injected from the injection module.
The method of claim 4, wherein

The storage module,

Is connected to the pipe and the air inlet port for the passage of the air discharged from the air discharge port which is a passage for discharging the air inside the liquid fuel tank,

The air inlet is a coupler coupling with the air outlet, liquid fuel supply device.
The method of claim 4, wherein

The drive module,

And a sensor connector coupled with a level sensor for sensing the level of the liquid fuel being filled with the liquid fuel tank.
The method of claim 8,

The drive module,

When the liquid fuel is filled in the liquid fuel tank to a predetermined level, receiving the detection signal of the water level sensor through the sensor connector to stop the operation of the pump module, liquid fuel supply apparatus.
The method of claim 4, wherein

The pump module,

A liquid fuel supply device providing a pump flow rate in the range of 5 to 60 L / min.
The method of claim 4, wherein

A housing surrounding the storage module, the pump module and the drive module; And

The liquid fuel supply device further comprises a moving module installed on the lower portion of the housing to rotate to move.
The method of claim 4, wherein

The liquid fuel tank,

Liquid fuel supply device is provided with a pressure control valve for adjusting the internal pressure.
The method according to any one of claims 1 to 12,

The liquid fuel,

Liquid fuel supply device which is selected from methanol, gasoline, kerosene, diesel, heavy oil, ethanol.