KR102302943B1 - Smart heating system for feeding fuel of ship engine - Google Patents

Abstract

The present invention relates to a smart heating system for fuel supply of a vessel engine, which can maximize energy efficiency, comprising: a fuel supply line (30) for moving a fuel while being connected between a storage tank (10) and a vessel engine (20); and an air circulation line (40) corresponding to the length of the fuel supply line (30) to accommodate the fuel supply line (30) therein.

Description

Smart heating system for feeding fuel of ship engine

The present invention relates to a smart heating system for supplying fuel to a marine engine, and more particularly, by automatically controlling the blowing temperature so that the temperature of the fuel gas supplied to the engine can be maintained at a constant temperature and supplied, the fuel gas is heated to a predetermined temperature. It relates to a smart heating system for fuel supply of marine engines that can maximize energy efficiency in the supplied marine engines while maintaining

It is a marine engine that can obtain propulsion or power generation power by using LNG (or LPG, LEG, etc.) as a fuel. (Extra Long Stroke Duel Fuel), etc. MEGI engine or DF engine compresses LNG (or LPG, LEG, etc.) and then injects and burns it, and is called a gas injection engine. In particular, the MEGI engine compresses fuel to a high pressure (300 to 420 bar) and then injects and burns the fuel, and is called a high-pressure gas injection engine.

The DF engine may be installed in LNG carriers and LNG-fueled propulsion ships using gas such as LNG, LPG, or LEG as fuel. The DF engine uses fuel gas such as natural gas as fuel together with fuel oil such as MDO and HFO, and a high-pressure fuel supply pressure of about 10 to 420 bar is required for the engine depending on the load.

In addition, the propulsion engine of the XDF engine, which is a low-speed 2-stroke low-pressure gas injection engine, can be connected to a liquefied gas storage tank and a liquefied gas supply line, and is supplied with liquefied gas or boil-off gas pressurized at a pressure of about 25 to 40 bar. It can be a low-pressure engine that uses boil-off gas or liquefied gas pressurized and heated through a boosting pump and a carburetor, and it can be a low-pressure engine that uses a pressure boil-off gas of about 40 bar, and directly rotates the propeller shaft to drive the propeller. It may be an engine or other engine for generating power.

In addition, MEGI, a low-speed two-stroke high-pressure natural gas injection engine, is a two-stroke engine rotating at a low speed and is mainly used as a propulsion engine. It can also be used for this purpose.

MEGI engines use both fuel oil (eg, HFO, MDO, etc.) and fuel gas (eg, LNG, LPG, LEG, etc.) When this is required, only fuel oil is supplied to the engine to obtain output, and when high output (for example, 30% or more of the maximum output) is required, fuel oil and fuel gas are supplied together to the engine to obtain output. can The operation method of the MEGI engine as such a high-pressure natural gas injection engine is disclosed in Korean Patent Registration No. 0396471.

In order for a marine engine to use high-pressure natural gas as fuel, the pressure and temperature conditions required by the engine must be matched. is important

1. Korean Patent Laid-Open Patent No. 10-2020-0042641 (Ship Engine Fuel Supply System) 2. Korean Patent Laid-Open Patent No. 10-2020-0086919 (Ship fuel supply system and method for temperature control of fuel gas using the same)

Accordingly, it is an object of the present invention to solve the problems according to the prior art. The technical task is to heat and supply fuel to the optimum temperature condition for the operation of the ship engine by connecting and installing the device to enable more stable operation.

An embodiment of the present invention provides a smart fuel supply for a marine engine that maintains the fuel moving on a fuel supply line supplied when the LNG fuel stored in the storage tank of the ship is supplied to the ship engine at a preset temperature. In the heating system,

A fuel supply line for moving fuel while being connected between the storage tank and the marine engine and an air circulation line for accommodating the fuel supply line in correspondence with the length of the fuel supply line are provided, the outer peripheral surface of the fuel supply line and the air A spaced air circulation space is formed between the inner circumferential surfaces of the circulation line,

An air supply line connected to one surface of the air circulation line and having an interior in communication with the air circulation space to move heated air is provided,

An air heating device connected to one end of the air supply line to heat air is provided,

A blower device connected in series or parallel structure is provided at one end of the air movement line for supplying air to the air heating device,

It provides a smart heating system for fuel supply of a marine engine including a main control module comprising a first control unit for controlling the operation of the blower and a second control unit for controlling the operation of the air heating device.

On the other hand, the air heating device is a combination in which a plurality of coupling holes spaced apart in a horizontal arrangement are formed on one side and the other side to correspond to the air movement direction moved by the blower while sealing the open upper part of the housing formed in a part of the air supply line. The plate is installed, but the coupling hole is arranged in a zigzag shape that crosses each other on one side and the other side,

A metal terminal separately installed in the coupling hole and arranged in parallel with the upper two metal terminals and an end bent and extended to the bottom of the other metal terminal among the metal terminals and connected in a zigzag up and down are the ends extending vertically downward to the bottom of the one metal terminal and mutually with each other An integral heating element including a joint-connected heater rod is installed, and the heater rod of the heating element is disposed inside the air supply line,

It is disposed on the upper portion of the coupling plate to provide a smart heating system for fuel supply of a marine engine comprising a control unit for controlling the supply of electricity to the metal terminal coupled to the coupling hole of the coupling plate.

On the other hand, it provides a smart heating system for fuel supply of a marine engine in which a temperature sensor for measuring the temperature inside the air supply line is installed on one surface of the air supply line between the air heating device and the air circulation line to which the air supply line is connected.

Accordingly, the present invention provides a more efficient ship engine by heating and supplying fuel to the optimum temperature condition for the operation of the ship engine by connecting and installing an air heater device on the supply line for supplying fuel from the fuel tank to the ship engine. It can maintain operation, and by supplying fuel at such a constant temperature, it provides the effect of minimizing fuel consumption and air pollutant emissions. It enables efficient use of space and provides the effect of maximally reducing the cost required for repair or maintenance of the air heater device.

1 is a schematic configuration diagram of a smart heating system for fuel supply of a marine engine according to an embodiment of the present invention.
2 is an operation flowchart for generating a heating temperature of an air heating device in a smart heating system for fuel supply of a marine engine according to an embodiment of the present invention.
3 is a front cross-sectional view (a) and a plan cross-sectional view (b) of an air heating device in a smart heating system for fuel supply of a marine engine according to an embodiment of the present invention.
4 is a structural diagram of a heating element of an air heating device in a smart heating system for supplying fuel to a marine engine according to an embodiment of the present invention.
5 is a perspective view of an air reduction member in a smart heating system for supplying fuel to a marine engine according to an embodiment of the present invention.
6 is a side view (a) and a cross-sectional view (b) of AA of an air reduction member in a smart heating system for fuel supply of a marine engine according to an embodiment of the present invention.
7 is a structural diagram (a) of a first air distribution unit and a structural diagram (b) of a second air distribution unit in a smart heating system for supplying fuel to a marine engine according to an embodiment of the present invention.
8 is a control explanatory diagram of an air heating device and a blower of a smart heating system for supplying fuel to a marine engine according to an embodiment of the present invention;

The present invention will be described in detail with reference to the accompanying drawings as follows. Here, repeated descriptions, well-known functions that may unnecessarily obscure the gist of the present invention, and detailed descriptions of configurations will be omitted. The embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer description.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, the term "...unit" described in the specification means a unit that processes one or more functions or operations, which may be implemented as hardware or software or a combination of hardware and software.

Hereinafter, a preferred embodiment of the vibration damper according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, an embodiment of the present invention moves on the fuel supply line 30 supplied when supplying the LNG fuel stored in the storage tank 10 of the ship to the ship engine 20. In a smart heating system for supplying fuel to a marine engine to maintain the fuel to be used at a preset temperature,

A fuel supply line 30 that moves fuel while being connected between the storage tank 10 and the marine engine 20 and a fuel supply line 30 corresponding to the length of the fuel supply line 30 are accommodated therein An air circulation line 40 is provided, and an air circulation space 45 spaced apart is formed between the outer circumferential surface of the fuel supply line 30 and the inner circumferential surface of the air circulation line 40,

An air supply line 50 connected to one surface of the air circulation line 40 and having an interior in communication with the air circulation space 45 to move heated air is provided,

An air heating device 100 for heating air connected to one end of the air supply line 50 is provided,

A blower 200 connected in a series or parallel structure is provided at one end of the air moving line 60 for supplying air to the air heating device 100,

Of a marine engine including a main control module 300 comprising a first control unit 310 for controlling the operation of the blower 200 and a second control unit 320 for controlling the operation of the air heating device 100 Provides a smart heating system for fuel supply.

In a ship, which is a conventional LNG carrier, liquid LNG is stored in a storage tank 10, and the liquid LNG stored in the storage tank 10 is transferred to the ship through a fuel supply line 30 by a high-pressure pump or differential pressure. It is supplied to the engine 20 , and at this time, it is formed in a double tube shape having a structure in which an air circulation line 40 accommodating the fuel supply line 30 is formed in the longitudinal direction of the fuel supply line 30 . An empty air circulation space (45) is formed between the outer peripheral surface and the inner peripheral surface of the air circulation line (40), and the LNG fuel supplied from the storage tank (10) is supplied while the heated air is moved to the air circulation space (45). It is vaporized from liquid to gas through a vaporizer (not shown), and by heating the ambient temperature of the fuel supply line 30 to which the vaporized gas is supplied and moved to an appropriate temperature, the vaporized gas is maintained and supplied at a constant temperature. will do

At this time, it is preferable that the temperature of the vaporized gas of NG injected into the marine engine 20 is about 20 ° C., through the blower 200 by the air heating device 100 in the air circulation space 45 . The outside air introduced into the air moving line 60 is heated by moving the outside air, and the heated air heated by the air heating device 100 passes through the air supply line 50 to the outside of the fuel supply line 30 . The heated air circulates in the air circulation space 45 which is a space.

In addition, as shown in Figs. 1, 3 and 4, the air heating device 100 has an open installation port on the heating housing 110 connected between the air supply line 50 and the air movement line 60 ( 111), the coupling plate 120 having a plurality of coupling holes 121 spaced apart in a horizontal arrangement on one side and the other side to correspond to the direction of air movement moved by the blower 200 while sealing is installed, but the coupling The ball 121 is disposed in a zigzag shape that crosses each other on one side and the other side,

The metal terminal 131, which is separately installed in the coupling hole 121, the upper two are arranged in parallel, and the other metal terminal 131 among the metal terminals 131. The ends are bent and extended to the bottom and connected in a zigzag up and down. At the lower end of the metal terminal 131 on one side, an integral heating element 130 including a vertically downwardly extending end and a heater rod 132 connected to each other is installed, and the heater rod 132 of the heating element 130 is installed in a heater housing ( 110) is placed inside,

A control box 140 including a heating control module (not shown) disposed on the coupling plate 120 to control the supply of electricity to the metal terminal 131 coupled to the coupling hole 121 of the coupling plate 120 . ) to provide a smart heating system for fuel supply of marine engines.

The air heating device 100 has a heating housing 110 connected between the air supply line 50 and the air movement line 60 , that is, one end of the air supply line 50 connected to the air circulation line 40 . ) has a structure in which one surface of the heating housing 110 is connected to the other end, and one end of the air movement line 60 connected to the other end to the blower 200 is connected to the other surface of the heating housing 110 .

The air heating device 100 is a tetrahedral heating housing 110 in which both sides are opened while forming an installation hole 111 in which a part of the upper surface is opened and the installation hole 111 of the heating housing 110 is sealed. The metal terminal 131 is coupled to the coupling hole 121 of the plate 120 and the coupling plate 120 , and the heating element 130 and the coupling plate 120 in which the heater rod 132 is located inside the heating housing 110 . ) has a structure consisting of a control box 140 including a heating control module for controlling the supply of electricity to the heating element 130 located on the upper portion.

An air movement line 60 connected to the blower 200 is connected to one side of the heating housing 110 on one side of both sides, and an air supply line 50 connected to the air purification line 40 is connected to the other side. , In the coupling plate 120 coupled to the installation hole 111 of the heating housing 110, a plurality of coupling holes 121 spaced apart in a horizontal arrangement are formed on one side and the other side to correspond to the air movement direction, respectively. (121) is arranged in a zigzag shape that crosses each other on one side and the other side.

A pair of metal terminals 131 of the heating element 130 to be described later are bound to the coupling hole 121 to designate the location of the heating element 130 inside the heating housing 110 to limit movement.

Then, the heating element 130 is individually installed in the coupling hole 121, two metal terminals 131 arranged in parallel to the upper portion and the other metal terminal 131 among the metal terminals 131 are bent at the lower end. It has an integral structure including a vertically downwardly extending end at the bottom of one side of the metal terminal 131 and connected to each other in a zigzag manner, and the heater rod 132 is formed in an upper and lower zigzag shape. The friction range of the moving air is increased by being connected, and in particular, a plurality of heating elements 130 inside the heating housing 110 are arranged in a zigzag form in one side horizontal direction and the other side horizontal direction, so that the air passes through the diffusion and friction of the heating range By increasing the range, it has a sufficient heating time compared to the air movement speed, resulting in instantaneous heating effect of air.

In addition, the control box 140 is disposed on the upper portion of the coupling plate 120 and a heating control module (not shown) for controlling the supply of electricity to the metal terminal 131 coupled to the coupling hole 121 of the coupling plate 120 . ) is included, and the heating control module controls whether the air heating device 100 operates by applying a signal to the main control module 300 through the control circuit programmed by the algorithm of FIG. 2 .

In addition, as shown in FIG. 1 , two or more blowers 200 may be installed in parallel or one blower 200 may have a structure in which one blower 200 is directly connected. The air heating device by reducing the moving speed of the outside air moving from the invoice device 200 to the air moving line 60 connected to the air heating device 100 before the air is introduced into the air heating device 100 . The following structure is further included in order to transfer the air to the 100 so that the outside air is completely moved to the air supply line 50 as heated air by the hair heating device 100 .

As shown in FIG. 3 , an air moving line 60 and an air supply line 50 are formed on one side based on the air heating device 100 and an air supply line 50 on the other side, and the air moving line 60 is a blower 200 . The cross-section through which the external air is transmitted to the air heating device 100 is a rectangular conduit type, and the air supply line 50 has a rectangular cross section for moving the heated air passing through the air heating device 200 . is the pipe type of

5 and 6, the first flow passage 411 is installed inside the air movement line 60 and penetrates left and right inside while the outer surface is in close contact with the inner surface of the air movement line 60. An outer housing 410 in which is formed, and

The air diffusion space 421 is disposed in a symmetrical structure on both sides of the first flow path 411 at the center of the outer housing 410 and spaced apart between the respective ends facing each other in the center of the first flow path 411 . ) is formed, one end is connected to each corner of the inner surface of the outer housing 410 to form a reinforcing bar 422 having the other end connected to each corner of the corresponding outer surface, and the cross-sectional area of the outer housing 410 is It has a smaller cross-sectional area compared to , but the cross-sectional area is gradually reduced from one end to the other, and the first air inlet 423 spaced apart between the inner and outer surfaces of the outer housing 410 is formed while moving left and right inside. The air deceleration member 400 composed of the inner housing 420 in which the penetrating second flow path 424 is formed is included.

The air reduction member 400 reduces the flow rate of the outside air before the outside air moving through the blower 200 flows into the air heating device 100 to reduce the external air reduced by the air heating device 100 . It has a structure that maximizes the heating effect by allowing air to pass through.

First, the blower 200 sucks the outside air and supplies it to the air heating device 100 and also serves to move the heated air to the air circulation line 40. In this case, the blower 200 has two or more These may be installed in parallel or have a structure in which one blower 200 is directly connected.

That is, an air moving line 60 is installed to connect the blower 200 and the air heating device 100 to move the outside air, and at this time, the blower 200 is parallel to the air moving line 60 or It has a structure directly connected to supply external air to the air heating device 100 through the air movement line (60).

And, an air moving line 60 and an air supply line 50 are formed on one side based on the air heating device 100 and the air supply line 50 on the other side, and the air moving line 60 is external air by the blower 200 . The cross-section of which is transmitted to the air heating device 100 is a rectangular conduit type, and the air supply line 50 has a rectangular conduit type in cross section for moving the heated air passing through the air heating device 100, or It may be in the form of a circular tube.

And, the air reduction member 400 is installed inside the air movement line 60, the outer housing 410 closely coupled to the inner surface of the air movement line 60 and the outer housing 410 is spaced apart from the inside. A pair is inserted so as to have an integral coupling structure composed of the inner housing 420 arranged in a mutually symmetrical structure while the ends facing each other are spaced apart.

The outer housing 410 has a cross-sectional shape corresponding to the cross-sectional shape of the air movement line 60, the outer surface of the outer housing 410 is closely coupled to the inner surface of the air movement line 60 to the outside The inflow of air is blocked, and an internal first flow path 411 penetrated to both sides is formed.

The inner housing 420 is arranged in a pair on the inner side of the outer housing 410, the open air diffusion space 421 in the form of a band spaced apart by a predetermined width between the ends facing each other while being symmetrically arranged. is formed, and an internal second flow path 424 passing through both sides is formed.

In addition, the inner housing 420 has a shape in which the cross-sectional area gradually decreases from one end to the other end, and at this time, one end of the inner housing 420 is located at the end of the outer housing 410 and the other end is the outer housing 410 . is located on the inside of

In addition, a support 422 connected from each corner of the outer housing 410 to the corner of the inner housing 420 at a corresponding position is formed so that the inner surface of the outer housing 410 and the inner housing 420 are formed to be spaced apart from each other. A first air inlet 423 is formed between the inner surface of the housing 410 and the outer surface of the inner housing 420 .

And, if one inner housing 420 is formed at a position adjacent to the blower 200 among the pair of inner housings 420 disposed inside the outer housing 410, the air heating device 200 is located adjacent to the one. The shaped one is referred to as the other inner housing 420, and in this case, in the inner middle part of the outer housing 410, the other end of the one inner housing 420 and the other end of the other inner housing 420 adjacent to the one inner housing 420 is between the other end. are formed to be spaced apart from each other to form an air diffusion space 421 that is a band-shaped empty space.

Accordingly, when the external air supplied through the blower 200 moves to the air moving line 60 and enters the air deceleration member 400 of the air moving line 60, the external air flows into the first air inlet 423. When passing through, the first air inlet 423 has a progressively smaller space area and passes while the external air is pressurized. Outside air passing through the second flow path 424 of 420 collides to decelerate the outside air, and some outside air passing through the first air inlet 423 of the inner housing 420 is gradually As the outside air is decelerated while passing through the first air inlet 423 of the other inner housing 420 having an increased space area, the decelerated outside air contacts and stays in contact with the heating element 130 of the air heating device 100 . time will increase

In addition, the air reduction member 400 is installed in the air supply line 50 in addition to being installed in the air movement line 60, the same air reduction member 400 is installed to reduce the movement speed of the heated air as well as to equalize It becomes possible to supply heated air having a temperature distribution.

In addition, as shown in (a) of Figure 7, each installed on the inner vertical surface of the heating housing 110 in which the heating element 130 of the air heating device 100 is located, while having a vertical rectangular box shape, the front is open And the rear surface is sealed to form a second air inlet (501a) therein, the other side exposed surface (503a) opposite to one side support surface 502 that is closely coupled to the inner vertical surface of the heating housing (110) While the through hole 504 is formed, the first air distribution unit 500a is further included in the end of the exposed surface 503a adjacent to the rear surface, in which the first air outlet path 505a of the vertical length is formed. .

The first air distribution unit 500a is formed in a mutually symmetrical structure while being respectively installed on the inner vertical surface of the heating housing 100 in which the heater rod 132 of the heating element 130 is located.

That is, the heating housing 110 has a quadrangular cross-sectional area and has a tetrahedral shape with both vertical surfaces and vertical horizontal surfaces formed inside, at this time the heating rod 132 of the heating element 130 is disposed. is arranged in a left-right symmetrical structure.

The first air dispersing part 500a is a vertical rectangular box shape, and one side of the support surface 502 is closely coupled to the inner vertical surface of the heating housing 110, and the heating rod 132 is opposed to the one side of the support surface 502. ) adjacent to the other side exposed surface (503a) is located, in this case, the other side of the first air dispersing unit (500a) on one side of the pair of first air dispersing units (500a) arranged in a symmetrical structure inside the heating housing (110) The exposed surface 503a and the other exposed surface 503a of the other first air dispersing part 500a are placed to face each other.

The first air dispersing unit 500a has a second air inflow path 501a formed inside the first air dispersing unit 500a with the front open and closed at the rear side, and the front side of the first air dispersing unit 500a has an air movement line 60. While corresponding to the position of the rear surface is directed to the position corresponding to the air supply line (50).

And a plurality of through-holes 504 are formed in the other exposed surface 503a of the first air dispersing part 500a, so that external air entering the second air inlet 501a is discharged through the through-holes 504, so that the heater It moves to the rod 132, and a first air outlet passage 505a of a vertical length penetrating inside is formed at the end of the exposed surface located on the rear surface of the first air distribution unit 500a, and a second air inlet passage 501a is formed. ), the moving external air passes through the first air discharge path 505a and moves to the heater rod 132 .

In addition, as shown in (b) of FIG. 7 , they are respectively installed on the inner vertical surface of the heating housing 110 in which the heating element 130 of the air heating device 100 is located, and the front is open and the rear is closed while the inside is the rear A third air inlet path 501b whose internal cross-sectional area becomes gradually smaller toward the direction is formed, and the other side inclined surface 503b opposite to the one side support surface 502 closely coupled to the inner vertical surface of the heating housing 110 is formed. and a second air distribution formed by a second air outlet passage 505b having a vertical length penetrating inward at the end of the inclined surface 503b adjacent to the rear surface while the contact plate 506 protruding in a vertical length is formed on the rear surface. It has a structure in which the part 500b is further included.

The second air distribution unit 500b is formed in a mutually symmetrical structure while being respectively installed on the inner vertical surface of the heating element 130 of the heating housing 110 .

That is, the heating housing 110 has a quadrangular cross-sectional area and has a tetrahedral shape with both vertical surfaces and vertical horizontal surfaces formed inside, at this time the heating rod 132 of the heating element 130 is disposed. The second air distribution unit 500b is disposed in a left-right symmetrical structure.

The second air dispersing part 500b is a vertical box shape, and the cross-sectional area gradually decreases from the front side to the other side, and one side support surface 502 is closely coupled to the inner vertical surface of the heating housing 110, and the The other side inclined surface 503b adjacent to the heating rod 132 while facing the one side support surface 502 is positioned, and at this time, a pair of second air distribution units 500b disposed in a symmetrical structure inside the heating housing 110 . The other inclined surface 503b of the second air dispersing unit 500b on the one side and the other inclined surface 503b of the other second air dispersing unit 500b are positioned to face each other.

The second air dispersing unit 500b has a third air inflow path 501b formed inside the second air dispersing unit 500b with the front open and closed at the rear side, and the front side of the second air dispersing unit 500b has an air movement line 60. While corresponding to the position of the rear surface is directed to the position corresponding to the air supply line (50).

In addition, a second air outlet passage 505b having a vertical length penetrating inside is formed at the end of the inclined surface 503b located on the rear surface of the second air distribution unit 500b, and a third air inlet passage having a gradually smaller space area. As the outside air moving (501b) discharges the second air discharge path (505b), the discharge direction is limited by the contact plate 506 protruding from the rear side so that the outside air can reach the heater rod 132 directly. control the movement path.

In addition, as shown in FIGS. 1 and 8 , the air supply line 50 is located on one surface of the air supply line 50 between the air circulation line 40 to which the air heating device 100 and the air supply line 50 are connected. A heating temperature sensor 141 for measuring the temperature of the fuel may be installed, and a circulation temperature sensor 142 for measuring the temperature in the air circulation space 45 of the air circulation line 40 is installed. We provide a smart heating system for supply.

The heating temperature sensor 141 senses the temperature of the air heated by the air heating device 100 and provides it to the main control module 300 , and the circulation temperature sensor 142 is the air circulation line 40 . The temperature of the heating air moving in the air circulation space 45 is sensed and provided to the main control module 300 .

In addition, it includes an input unit (not shown) for inputting the set temperature, set time, and set mode of the air heating device 100 and a display unit (not shown) for displaying the set temperature, set mode and set time of the input unit, At this time, the blower 200 is driven by the input signal of the input unit and blows air, and the input signal is transmitted to the second control unit 320 that controls the operation of the blower 200 and the blower 200 . to control the operation of

And, the setting mode is composed of a manual mode for setting time and an automatic mode for automatically determining the fuel temperature from the temperature data of the heating temperature sensor 141 and the circulation temperature sensor 142, and in the manual mode, the The main control module 300 may determine the heating mode by calculating the temperature difference between the average temperature value of the circulation temperature sensor 142 and the set temperature actually set by the air heating device 100 .

Here, the input unit may input power control of the air heating device 100 and a set temperature, a set mode, and an operating time of the air heating device 100 .

The display unit is composed of an LCD or LED, and receives information about the air heating device 100 such as the set temperature and the current temperature, the setting mode, the set time and the remaining time of the air heating device 100 from the control unit and displays it. .

The main control module 300 operates the blower 200 and the air heating device 100 according to the input signal input from the input unit.

The blower 200 works together when the air heating device 100 operates, and moves the heat generated by the air heating device 100 by rotating a fan (not shown) connected to the blower 200, In addition, the blower 200 can be operated while stopping the operation of the air heating device 100 to cool the heated air due to an increase in the temperature of the heated air due to overheating of the air heating device 100 .

In the automatic mode, the temperature data measured by the heating temperature sensor 141 that measures the temperature of the air heated through the air heating device 100 and the circulation temperature sensor that measures the temperature of the air moving in the air circulation space 45 are The temperature state of the fuel in the fuel supply line 30 may be automatically determined using reference numeral 142 .

That is, the circulation temperature sensor 142 measures the temperature over time, and since the temperature at a specific point in time may have a reliability problem, it may be measured multiple times to obtain an average value. Here, the circulation temperature sensor 142 digitizes a specific section by means of an analog digital converter (ADC) and calculates the value of that section to express the temperature. By averaging the ADC values of the circulation temperature sensor 142 of the present invention, It can be used in the automatic mode of the air heating device 100 .

And, when the temperature difference (dT1, dT2) of the set temperature and the circulation temperature sensor 142 is determined, the heating mode automatically recognizes the heating mode by recognizing the temperature difference (dT1, dT2). The temperature difference for the heating mode can be measured twice or more per cycle for precision.

Referring to FIG. 2 , when the air supplied through the blower 200 according to an embodiment of the present invention moves through the air heating device 100 and the heated air moves the air supply line 50 , it is heated through a temperature measuring unit. A temperature measuring step of measuring the temperature of the air, a temperature control step of controlling the temperature of the air based on the measured temperature value, and providing a measured temperature value to the user terminal, as a response to the temperature value, the user terminal It may include a receiving step of receiving the feedback data from.

When the method for controlling the temperature of the air heated through the air heating device 100 according to an embodiment of the present invention is started, first, the temperature of the heated air is measured ( S100 ).

And, when the temperature value measured in step S200 is equal to or greater than the first reference value of the air temperature, the diagnosis unit diagnoses the air temperature state as the first temperature state (S202), and when it is less than the second reference value, the air temperature state is diagnosed as the second temperature state (S201).

Thereafter, according to the diagnosis result in step S200, when the first temperature state is met, the first control circuit 311 of the air heating device 100 is driven (S202), and when the second temperature state is met, the air The second control circuit 312 of the heating device 100 is driven (S202).

Additionally, the temperature value measured in step S200 is transmitted to the user terminal, and the user transmits feedback data using the user terminal.

When the feedback data is received through the step of transmitting to the user terminal, the temperature control step (S200) sets the feedback data to the highest priority and performs temperature control of the air based on the feedback data (S201) (S202).

Receiving the feedback data is to detect whether the user terminal is located within the detection distance of the signal for location detection of a certain distance radius, if the user terminal is within the range, the temperature measurement step (S200) and the temperature control step (S201) ) (S202) is performed.

In addition, the step of receiving the feedback data receives the pre-temperature control data from the user terminal. The second control unit 320 of the air heating device 100 or the first control unit 310 of the blower 200 at a time corresponding to the time setting data included in the pre-temperature control data received in the step of receiving the pre-temperature control data. ) to control the temperature of the air moved to the air circulation line 40 by the.

In addition, the main control module 300 rotates the fan of the blower 200 in order to uniformly maintain the temperature of the air circulation space 45 of the air circulation line 40, and the air heating device 100 ) is provided to control the heating control module (not shown) of the air heating device 100 so that the heating air from the air circulation line 40 can be uniformly ejected and moved in the air circulation space 45 of the air circulation line 40 . .

Preferably, the main control module 300 is based on the temperature measured by the temperature sensors 141 and 142 located in each part of the air supply line 50 and the air circulation line 40, the air heating device The heating air movement time corresponding to each temperature sensor 141 and 142 from 100 is calculated, and the wind direction of the blower 200 is determined by the temperature sensors 141 and 142 according to the calculation time. It may be provided to adjust the ejection time when heading to the located part.

Here, the moving time of the heating air may be calculated by various methods, and preferably may be calculated using Newton's Law of Cooling.

Newton's law of cooling the amount of heat radiation of the object is as a rule that is proportional to the temperature difference between the ambient temperature and the object of the object, the calculation formula for calculating the constant Newton's cooling law (dT / dt = k (T C -T A) Since the amount of heat is proportional to the change in temperature per unit time, according to Newton's cooling law, the greater the temperature difference between the two objects, the faster the heat convection rate between the two objects.

Therefore, when n sensors are disposed in the air supply line 50 and the air circulation line 40 using Newton's cooling law, the air heating device 100 according to the temperature measured at the part where each sensor is located. After operating , the temperature change in the air circulation line 40 is calculated, that is, the main control module 300 implements an algorithm using the above formula, so that the wind speed of the blower 200 is adjusted to each temperature. It may be provided to adjust the flow rate by being adjusted by an algorithm of the sensor.

In addition, in Newton's law of cooling, the heat transfer coefficient is a function determined according to the speed of the fluid and the medium, and the blower 200 further includes a wind speed control unit (not shown) for controlling the wind speed, the wind speed (of the fluid). speed) to change the heat transfer coefficient of the heating element 130 in the air heating device 100 may be provided.

In addition, the main control module 300 may be provided to adjust the flow rate by adjusting the wind speed of the blower 200 according to the temperature measured by the temperature sensors 141 and 142 .

By being configured in this way, the main control module 300 controls the wind speed adjusting unit (not shown) to change the heat transfer coefficient of the heating element 130 in the air heating device 100 , and the air heating device 100 . It is possible to equalize the moving time when the heated air blown out through the moved to the portion where each of the temperature sensors 141 and 142 is located.

In addition, the main control module 300 calculates the temperature difference between the temperature measured by the temperature sensors 141 and 142 and the set temperature, and when the temperature difference is greater than or equal to the set temperature range, the air heating device 100 Controls the wind speed control unit to increase the temperature of or to strengthen the wind speed of the blower 200, and to decrease the temperature of the air heating device 100 or weaken the wind speed of the blower 200 when it is below the set temperature range. can be arranged to do so.

In addition, as shown in FIG. 8, the heating air inside the air supply line 50 on one surface of the air supply line 50 between the air heating device 100 and the air circulation line 40 to which the air supply line 50 is connected. A pressure sensor 143 for measuring the pressure and measuring the heating air pressure in the air circulation space 45 of the air circulation line 40 is installed to measure and monitor the pressure of the heating air so that the heating air moves and circulates normally. You can check whether

In addition, the main control module 300 is located far from the air heating device 100 according to a difference in distance between the portion where the temperature sensors 141 and 142 are located and the portion where the air heating device 100 is located. Air is discharged at a strong wind speed with respect to the temperature sensors 141 and 142 disposed on the .

Here, the main control module 300 may be provided with a microprocessor capable of calculating the heating temperature or heating time of the heating element 130 of the air heating device 100 and the blowing time or the wind speed of the blower. have.

In addition, when it is determined that the temperature condition is the same as the actual measured temperature as a result of the calculation in the step of calculating according to the movement time of the heating air, the safety mode is entered and the operating conditions of the air heating device 100 are checked, and at this time, the safety mode can check whether the air heating device 100 is normally operated.

If it is determined that the operating conditions of the air heating device 100 are safe as a result of the check in the step of determining that the calculated temperature and the measured temperature are the same, the temperature maintenance of the air heating device 100 is instructed and is terminated.

On the other hand, if it is determined that the mutual temperature conditions are not the same as a result of the determination in the step of determining the calculated temperature and the measured temperature, it is finally determined whether the error condition is satisfied.

If it is determined that the error condition is not satisfied as a result of the determination, the operation step of the air heating device 100 is returned to check whether the operating condition is safe, and if it is determined that the error condition is satisfied, an error is displayed, It ends.

The temperature control method of the air moved to the above-described air circulation line 40 has been described with reference to the flowchart shown in the drawings. For the sake of simplicity, the method has been shown and described as a series of blocks, but the invention is not limited to the order of the blocks, and some blocks may occur with other blocks in a different order or at the same time as shown and described herein. Also, various other branches, flow paths, and orders of blocks may be implemented that achieve the same or similar result. Furthermore, not all illustrated blocks may be required for implementation of the methods described herein.

Although specific embodiments of the present invention have been illustrated and described above, the technical idea of the present invention is not limited to the accompanying drawings and the above description, and various modifications are possible within the scope without departing from the spirit of the present invention. It is obvious to those of ordinary skill in the art, and such modifications will be considered to fall within the scope of the claims of the present invention without violating the spirit of the present invention.

Storage tank 10 Marine engine 20 Fuel supply line 30
Air circulation line 40 Air circulation space 45 Air supply line 50
Air moving line 60 Air heating device 100 Heating housing 110
Mounting hole 111 Coupling plate 120 Coupling hole 121
Heating element 130 Heater rod 132 Heating temperature sensor 141
Circulation temperature sensor 142 Pressure sensor 143 Main control module 300
first control unit 310 second control unit 320 air reduction member 400
Outer housing 410 Inner housing 420 Air diffusion space 421
Reinforcement 422 1st air inlet 423 2nd flow 424
First air distribution unit 500a Second air distribution unit 500b Second air inlet path 501a
3rd air inlet 501b support surface 502 exposed surface 503a
Slope 503b Through hole 504 1st air outlet 505a
2nd air outlet 505b contact plate 506

Claims (6)

When the fuel of LNG stored in the storage tank 10 of the ship is supplied to the ship engine 20, the fuel supplied to the ship engine to be moved on the fuel supply line 30 is maintained at a predetermined temperature. In the smart heating system for
A fuel supply line 30 that moves fuel while being connected between the storage tank 10 and the marine engine 20 and a fuel supply line 30 corresponding to the length of the fuel supply line 30 are accommodated therein An air circulation line 40 is provided, and an air circulation space 45 spaced apart is formed between the outer circumferential surface of the fuel supply line 30 and the inner circumferential surface of the air circulation line 40,
An air supply line 50 that is connected to one surface of the air circulation line 40 and has an interior in communication with the air circulation space 45 to move heated air is provided,
The air heating device 100 connected to one end of the air supply line 50 to heat the air is installed in an open upper part of the heating housing 110 connected between the air supply line 50 and the air movement line 60 . A coupling plate 120 provided with a plurality of coupling holes 121 spaced apart in a horizontal arrangement on one side and the other side to correspond to the direction of air movement moved by the blower 200 while sealing the sphere 111 is installed, The coupling hole 121 is disposed in a zigzag shape crossing each other on one side and the other side,
The metal terminal 131, which is separately installed in the coupling hole 121, the upper two are arranged in parallel, and the other metal terminal 131 among the metal terminals 131. The ends are bent and extended to the bottom and connected in a zigzag up and down. At the lower end of the metal terminal 131 on one side, an integral heating element 130 including a vertically downwardly extending end and a heater rod 132 connected to each other is installed, and the heater rod 132 of the heating element 130 is installed in a heater housing ( 110) is placed inside,
It is disposed on the upper portion of the coupling plate 120 and consists of a control box 140 including a heating control module for controlling the supply of electricity to the metal terminal 131 coupled to the coupling hole 121 of the coupling plate 120, ,
A blower 200 connected in a series or parallel structure is provided at one end of the air moving line 60 for supplying air to the air heating device 100,
A main control module 300 comprising a first control unit 310 for controlling the operation of the blower 200 and a second control unit 320 for controlling the operation of the air heating device 100 is provided;
The outer housing 410 is installed inside the air movement line 60, the first flow path 411 penetrating left and right inside while the outer surface is in close contact with the inner surface of the air movement line 60 is formed; and , an air diffusion space ( 421) is formed, one end is connected to each corner of the inner surface of the outer housing 410, and a reinforcing bar 422 having the other end connected to each corner of the corresponding outer surface is formed, the outer housing 410 of It has a small cross-sectional area compared to the cross-sectional area, and the cross-sectional area is gradually reduced from one end to the other end, and a first air inlet 423 spaced apart between the inner and outer surfaces of the outer housing 410 is formed while moving toward the inside. A smart heating system for fuel supply of a marine engine, characterized in that the air reduction member 400 is comprised of; the inner housing 420 in which the left and right second passages 424 are formed. delete delete delete According to claim 1,
To measure the temperature and pressure of the heated air inside the air supply line on one surface of the air supply line between the air heating device and the air circulation line to which the air supply line is connected, and to measure the temperature and pressure of the heated air in the air circulation space of the air circulation line. A smart heating system for fuel supply of a marine engine, characterized in that a temperature sensor and a pressure sensor are installed. According to claim 1,
The third air is installed on the inner vertical surface of the heating housing 110 in which the heating element 130 of the air heating device 100 is located, and the front is open and the rear is closed, and the inner cross-sectional area gradually decreases toward the rear. The inflow path 501b is formed, and the other side inclined surface 503b opposite to the one side support surface 502 closely coupled to the inner vertical surface of the heating housing 110 is formed, and a contact plate protruding vertically from the rear surface. A second air dispersing part (500b) formed by a second air outlet (505b) of a vertical length penetrating inward at the end of the inclined surface (503b) adjacent to the rear surface while the 506 is formed, characterized in that it further comprises Smart heating system for fuel supply of marine engines.

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