Oil tank heater

Abstract

The invention relates to an oil tank heater which comprises a heating cylinder, a heating inner cavity is formed in the heating cylinder, and a fuel oil inlet, a fuel oil outlet, a heating medium inlet and a heating medium outlet which are communicated with the heating inner cavity are further formed in the heating cylinder. The heating graphite block is arranged in the heating inner cavity, a plurality of fuel oil channels and heating medium channels are formed in the heating graphite block, the fuel oil channels are spirally distributed in the heating graphite block, and the upper side and the lower side of each fuel oil channel are communicated with a fuel oil inlet and a fuel oil outlet respectively; the heating medium channel is distributed in the heating graphite block in a straight-through mode, and the left side and the right side of the heating medium channel communicate with the heating medium inlet and the heating medium outlet correspondingly. According to the oil tank heater, the heating graphite block and the spiral fuel oil channel are jointly matched to heat fuel oil, the heating time of the fuel oil is prolonged, meanwhile, the heat conduction efficiency of the graphite block is higher, temperature rise of the fuel oil can be achieved faster and better, the viscosity of the fuel oil can be reduced, and the quality of the fuel oil in an oil tank is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of fuel heating equipment, in particular to an oil tank heater. Background Art

[0002] At present, most ship fuel tanks use steam coil heating method. The steam coil heating method has a complex structure, occupies a large space, is inconvenient to maintain and requires field operations. The welding quality cannot be guaranteed, which increases accidental leakage points. Excessive bending of the pipeline also increases the fatigue strength of the steam coil, which can easily cause the pipeline to break brittlely, causing steam leakage, and then polluting the quality of the fuel in the oil tank.

[0003] In view of the above phenomenon, a fuel tank heater is proposed in the patent HYPERLINK "https: / / www.uyanip.com / result?exp=GKH:(CN208470068U)" \t "https: / / www.uyanip.com / _blank"CN208470068U, which belongs to the technical field of fuel tank heating equipment. It solves the problem of poor stability of existing fuel tank heating equipment, and includes a cylinder, a tube bundle, an air inlet pipe, an air diffuser, an air outlet pipe, a temperature sensor, an air inlet valve and a control panel. Among them, steam heats the tube bundle, and when the steam volume in the cylinder reaches a predetermined value, that is, when the temperature of the tube bundle reaches a predetermined temperature, the fuel is passed into the tube bundle, so that the temperature of the steam in the cylinder is transferred to the fuel through heat transfer. In this way, the temperature of the fuel can be quickly increased and the viscosity of the fuel can be reduced, thereby ensuring the quality of the fuel in the oil tank.

[0004] The oil tank heater in the above patent adopts a straight-through tube bundle to form the path for the fuel to pass through. This method shortens the time the fuel stays in the cylinder, that is, the time for the fuel to exchange heat with the hot steam is relatively short. Even if the temperature in the cylinder is very good, the temperature of the fuel cannot be well increased in a short time, and the heating effect is not good. If the residence time of the fuel is extended to increase the heat exchange time, the entire heat exchange process will be discontinuous. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an oil tank heater with good heat exchange effect and capable of continuous operation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an oil tank heater, the innovation of which is: comprising A heating cylinder having a heating inner cavity therein, a fuel inlet and a fuel outlet connected to the heating inner cavity being provided on the upper and lower sides of the heating cylinder, and a heating medium inlet and a heating medium outlet connected to the heating inner cavity being provided on the left and right sides of the heating cylinder; A heating graphite block is arranged in the heating inner cavity, and a plurality of fuel channels and heating medium channels are opened in the heating graphite block, wherein the fuel channel is spirally distributed in the heating graphite block, and the upper and lower sides of the fuel channel are respectively connected to the fuel inlet and the fuel outlet, and the heating medium channel is straightly distributed in the heating graphite block, and the left and right sides of the heating medium channel are respectively connected to the heating medium inlet and the heating medium outlet.

[0007] Furthermore, the outer wall of the heating graphite block is in contact with the inner wall of the heating cylinder; The upper and lower sides of the heating graphite block are respectively provided with a first groove and a second groove which are recessed into the heating graphite block, the fuel inlet and the upper inlet of each fuel channel are connected to the first groove, and the fuel outlet and the lower outlet of each fuel channel are connected to the second groove; The left and right sides of the heating graphite block are respectively provided with a third groove and a fourth groove which are recessed into the interior of the heating graphite block; the heating medium inlet and the left inlet of each heating medium channel are connected to the third groove; the heating medium outlet and the right outlet of each heating medium channel are connected to the fourth groove.

[0008] Furthermore, a first sealing ring is provided on the heating graphite block on the outer side of the first groove, a second sealing ring is provided on the outer side of the second groove, a third sealing ring is provided on the outer side of the third groove, and a fourth sealing ring is provided on the outer side of the fourth groove.

[0009] Furthermore, the heating medium is steam or heat transfer oil.

[0010] Furthermore, a plurality of supporting legs are provided at the bottom end of the heating cylinder.

[0011] The advantages of the present invention are as follows: the oil tank heater of the present invention adopts the cooperation of the heating graphite block and the spiral fuel channel to realize the heating of the fuel, thereby prolonging the heating time of the fuel. At the same time, the graphite block has a higher thermal conductivity, and can realize faster and better heating of the fuel, reduce the fuel viscosity, and ensure the quality of the fuel in the oil tank.

[0012] The design of the first groove, the second groove, the third groove and the fourth groove on the heating graphite block is to facilitate the collection of fuel and heating medium. In this way, only one fuel inlet, fuel outlet, heating medium inlet and heating medium outlet need to be opened to realize the circulation of fuel and heating medium in multiple fuel channels and heating medium channels.

[0013] The design of the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring is to improve the sealing effect between the heating graphite block and the heating cylinder, and to avoid direct contact between the heating medium and the fuel due to the design of the groove, thereby affecting the quality of the fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the oil tank heater of the present invention. DETAILED DESCRIPTION

[0015] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0016] like Figure 1 An oil tank heater is shown, comprising A heating cylinder 1 is provided, which is cylindrical and has a heating inner cavity therein, so that the entire heating cylinder 1 forms a hollow cylindrical structure, and a fuel inlet 11 and a fuel outlet 12 connected to the heating inner cavity are provided on the upper and lower sides of the heating cylinder 1, and the fuel inlet 11 and the fuel outlet 12 are both located in the middle of the heating cylinder 1, and a heating medium inlet 13 and a heating medium outlet 14 connected to the heating inner cavity are provided on the left and right sides of the heating cylinder 1, and the heating medium inlet 13 is located on the lower side of the heating cylinder 1, and the heating medium outlet 14 is located on the upper side of the heating cylinder 1.

[0017] A support leg 15 is also provided at the bottom end of the heating cylinder 1 . There are four support legs 15 in total, which are distributed in parallel along the circumferential direction of the heating cylinder 1 .

[0018] A heating graphite block 2 is arranged in the heating inner cavity. The heating graphite block 2 is also cylindrical, and each outer wall of the heating graphite block 2 is in contact with the inner wall of the heating cylinder 1. A plurality of fuel channels 21 and a heating medium channel 22 are opened in the heating graphite block 2. There are a plurality of fuel channels 21, which are sequentially stepped along the circumferential direction of the heating graphite block 2, and each fuel channel 21 is spiral. The upper side of the fuel channel 21 extends out of the heating graphite block 2 and is a fuel inlet. The lower side of the fuel channel 21 extends out of the heating graphite block 2 and is a fuel outlet. The fuel channel 21 is The upper and lower sides of 1 are respectively connected with the fuel inlet 11 and the fuel outlet 12, there are several heating medium channels 22, which are sequentially distributed in the heating graphite block 2 from top to bottom, and each heating medium channel 22 is a straight-through channel, the left side of the heating medium channel 22 extends out of the heating graphite block 2 and is a heating medium feed port, the right side of the heating medium channel 22 extends out of the heating graphite block 2 and is a heating medium discharge port, and the left and right sides of the heating medium channel 22 are respectively connected with the heating medium inlet 13 and the heating medium outlet 14, and the heating medium can be steam or heat transfer oil.

[0019] A first groove 23 and a second groove 24 which are recessed into the interior of the heating graphite block 2 are respectively formed on the upper and lower sides of the heating graphite block 2. The fuel inlet 11 and the upper inlet of each fuel channel 21 are connected to the first groove 23, and the fuel outlet 12 and the lower outlet of each fuel channel 21 are connected to the second groove 24.

[0020] A third groove 25 and a fourth groove 26 are respectively provided on the left and right sides of the heating graphite block 2, which are sunken into the heating graphite block 2. The heating medium inlet 13 and the left inlet of each heating medium channel 22 are connected to the third groove 25, and the heating medium outlet 14 and the right outlet of each heating medium channel 22 are connected to the fourth groove 26. The design of the first groove 23, the second groove 24, the third groove 25 and the fourth groove 26 on the heating graphite block 2 is to facilitate the collection of fuel and heating medium. In this way, only one fuel inlet 11, fuel outlet 12, heating medium inlet 13 and heating medium outlet 14 are needed to realize the circulation of fuel and heating medium in multiple fuel channels 21 and heating medium channels 22.

[0021] A first sealing ring 27 is also provided on the outside of the first groove 23 of the heating graphite block 2, a second sealing ring 28 is also provided on the outside of the second groove 24 of the heating graphite block 2, a third sealing ring 29 is also provided on the outside of the third groove 25 of the heating graphite block 2, and a fourth sealing ring 30 is also provided on the outside of the fourth groove 26 of the heating graphite block 2. The design of the first sealing ring 27, the second sealing ring 28, the third sealing ring 29 and the fourth sealing ring 30 is to improve the sealing effect between the heating graphite block 2 and the heating cylinder 1, and to avoid direct contact between the heating medium and the fuel due to the design of the grooves, thereby affecting the quality of the fuel.

[0022] When the oil tank heater of the present invention is used to process the fuel in the oil tank, first, the heating medium enters the third groove 25 from the heating medium inlet 13, then flows into each heating medium channel 22 in sequence, then flows into the fourth groove 26, and finally flows out from the heating medium outlet 14. The heating medium is used to heat the heating graphite block 2 first, and then the fuel in the oil tank flows from the fuel inlet 11 into the first groove 23, and then flows into each fuel channel 21 in sequence. At this time, the heating graphite block 2 is used to heat the fuel to increase the temperature of the fuel and reduce the viscosity of the fuel. The heated fuel then flows into the second groove 24, and finally flows back to the oil tank from the fuel outlet 12 again, thereby completing the heating of the fuel in the oil tank.

[0023] The oil tank heater of the present invention adopts the cooperation of the heating graphite block 2 and the spiral fuel channel 21 to realize the heating of the fuel, which prolongs the residence time of the fuel in the heating cylinder 1, and correspondingly prolongs the heating time of the fuel. At the same time, the graphite block has a higher thermal conductivity, which can realize faster and better heating of the fuel, reduce the viscosity of the fuel, and ensure the quality of the fuel in the oil tank.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An oil tank heater, characterized in that: include A heating cylinder having a heating inner cavity therein, a fuel inlet and a fuel outlet connected to the heating inner cavity being provided on the upper and lower sides of the heating cylinder, and a heating medium inlet and a heating medium outlet connected to the heating inner cavity being provided on the left and right sides of the heating cylinder; A heating graphite block is arranged in the heating inner cavity, and a plurality of fuel channels and heating medium channels are opened in the heating graphite block, wherein the fuel channel is spirally distributed in the heating graphite block, and the upper and lower sides of the fuel channel are respectively connected to the fuel inlet and the fuel outlet, and the heating medium channel is straightly distributed in the heating graphite block, and the left and right sides of the heating medium channel are respectively connected to the heating medium inlet and the heating medium outlet.

2. The oil tank heater according to claim 1, characterized in that: The outer wall of the heating graphite block is in contact with the inner wall of the heating cylinder; The upper and lower sides of the heating graphite block are respectively provided with a first groove and a second groove which are recessed into the heating graphite block, the fuel inlet and the upper inlet of each fuel channel are connected to the first groove, and the fuel outlet and the lower outlet of each fuel channel are connected to the second groove; The left and right sides of the heating graphite block are respectively provided with a third groove and a fourth groove which are recessed into the interior of the heating graphite block; the heating medium inlet and the left inlet of each heating medium channel are connected to the third groove; the heating medium outlet and the right outlet of each heating medium channel are connected to the fourth groove.

3. The oil tank heater according to claim 2, characterized in that: The heating graphite block is provided with a first sealing ring on the outer side of the first groove, a second sealing ring on the outer side of the second groove, a third sealing ring on the outer side of the third groove, and a fourth sealing ring on the outer side of the fourth groove.

4. The oil tank heater according to claim 1, characterized in that: The heating medium is steam or heat transfer oil.

5. The oil tank heater according to claim 1, characterized in that: The bottom end of the heating cylinder is also provided with a plurality of supporting legs.

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