JP3007657U - Heating unit with fins - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The most important purpose is not the conventional finned tube, it is easy to handle and the fins are effectively attached to the entire surface. The object of the present invention is to provide a small heating unit having a structure that gives sufficient heat to the object to be heated when the components pass through the unit. [Structure] A heating unit (steam or high temperature oil) that welds fins to the cylindrical surface in a spiral shape to the cylindrical unit and also installs a concentric inner cylinder inside the cylinder to increase the heat radiation area and to pass through the inner and outer cylinders. It has an internal structure that stirs so that a desired amount of heat can be released when it passes through the length unit, and has a strong mounting portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is installed in the hold to raise the temperature of the oil in the freight oil tank, fuel oil tank or product oil tank of the ship so that it can be pumped by raising it to an appropriate temperature. This heating unit is designed so that the heater can be installed as easily as possible and effective heating can be performed.

[0002]

[Prior art]

 In the past, heating was performed by passing steam or heating oil through a particularly thin heating pipe so that heating could be spread as evenly as possible, but it seems to be the closest tanker even if heating pipes are not evenly arranged on the entire floor. Due to the widespread use of double bottoms, various experiments have shown that even if a large-capacity heater capable of hitting tens of meters of a thin tube is installed, the heating area is the same. Since it was confirmed that there was almost no difference in the heating effect, a heating unit with more fins and a small heating unit as a whole was more suitable than the conventional pipes or finned pipes required for field installation of many pipes. The finned heating unit was designed to meet the demands by finding that it is more economically and more maintenance-friendly to equip it than the conventional ones. As described above, in the past, a large number of long thin tubes were placed inside the ship bottom, and they were connected by welding in the field. Moreover, the work environment was unavoidable, and the number of excellent engineers gradually decreased, so it was unavoidable to avoid on-site work as much as possible.

[0003]

[Problems to be solved by the device]

 This plan minimizes the work in the field, and the unit of the product can perform the full work in the factory with sufficient care, equipment and other complete conditions, and also can perform the sufficient test. It has become necessary to build a unit that is cohesive.

[0004]

[Means for Solving the Problems] In order to solve the above problems, it is necessary to reduce the size of the heating unit, solve the problems of efficiency and ease of manufacture. To meet these requirements, first place the most easily mounted fins on the outer surface of the unit in the most efficient manner. Conventionally, the diameter of the pipe to which the fin was attached was about 60 mm to 80 mm, but this diameter was made as large as possible to 100 mm to 600 mm. If the diameter exceeds a certain level, heating steam or heating oil at the center of a large diameter may pass through.Therefore, for such a large diameter pipe, attach a fin to the inner pipe as a double pipe. Although it does not exist, 100% of the heat is transferred to the inner surface, so that it was used and the area through which the heating element passes was widened. Further, as described in claim 3, for a unit having a relatively small diameter, a baffle plate is placed near the entrance and exit of the passage tube to cause turbulent flow in the tube, so that heat uniformly hits the heat transfer surface. In the case of a thick pipe, a spiral baffle is placed on the outside of the inner pipe, or another baffle of another shape is placed to make the passing heat source fluid a turbulent flow to enhance the heat transfer effect. .

[0005]

[Action]

 The purpose of this heating unit is to maximize the heat transfer from the heating element that passes through with a large effective heat dissipation area to the oil to be heated per unit time. The optimum fin thickness, height, pitch, etc. were determined by the experiment of the above, and the heating element (steam or heating oil) was applied to the heat transfer surface as uniformly as possible so that the high temperature part did not pass through the unit as much as possible. It has a structure that creates a turbulent flow without difficulty. These designs allowed us to obtain the most effective heating unit. This will be described by way of example. FIG. 1 shows a fin heating unit in which fins are attached to a tube having a relatively small diameter. In this case, 1 is a main body to which the fins are attached, and the fins 2 are attached to the outer surface of the main body in a spiral shape by continuous welding on the outer periphery. 3 is a lid at the inlet of the steam or oil for heating, and 5 is a baffle previously attached to the lid. 7 is a support material for the plate. Similarly, 6 and 8 are the baffle plate for the outlet and its supporting material. Reference numerals 9 and 10 respectively denote an inlet pipe and an outlet pipe for heating steam or oil, which are attached to the lid of the heating unit. 2 shows the shape of the baffle in the AA sectional view of FIG. 1, and FIG. 3 shows the relational shape of the fin and the main body in the BB sectional view of FIG. FIG. 4 shows a state in which a baffle plate is attached to the lid main body 3 in advance when the heating unit is assembled and finally the inlet lid is closed by applying it to the main body. To explain the operation of this heating unit, the heating steam flowing from the right-hand inlet pipe 9 hits the baffle plate 5 and becomes a turbulent flow, which fills the inside of the main body 1 to the outside fluid to be heated and the fins. Through the discharge pipe 10. If heating oil is used instead of this steam, it is designed so that it can flow out through a discharge pipe having a dotted line as indicated by 11 or 12. This is to completely eliminate the air that originally exists in the body. Next, FIG. 5 shows a heating unit in which fins are attached to a body having a diameter larger than that shown in FIG. Generally, in order to automatically weld fins around the pipe by various welding methods, there is a limit to the width of the fins, so it is possible to increase the width to some extent, but there is a limit. Therefore, it is desirable to pass a fairly large tube in the middle of a thick body in a tunnel shape to give 100% heat transfer efficiency to the inner surface, and to expect the effect of fins attached to the outer surface. Therefore, as shown in FIG. 5, an inner tube 101 having a slightly smaller diameter than that is put inside the main body 100 and closed by front and rear lids 102 and 103. At this time, the baffle plate 104 is attached to the outside of the inner pipe 101 in a fan shape as shown in the cross-sectional view of FIG. 6, the outlet lid 103 is attached to the main body, and then the inner pipe 101 is attached to the inlet lid 102 and then the main body. Then, the lid 102 and the main body are attached by welding, and the end of the inner pipe that has penetrated through the outlet lid 103 is welded and attached to the outlet lid. Reference numeral 105 is a fin on the main body 100, which has a thickness and a pitch so as to maximize heat efficiency. 6 is a sectional view taken along the line CC of FIG. 6, and FIG. 7 is a sectional view taken along the line DD of FIG. Reference numerals 106 and 107 respectively indicate the inlet and outlet of the heating steam passing through the inside of the heating unit. However, if this uses high temperature heating oil, the inlet and outlet of their main bodies are as shown by the dotted lines in FIG. It is attached in the manner of 108 and 109.

[0006]

[Effect of device]

 The effect of the device is not only good results of heat transfer as described above, but also the difficulty of installing conventional pipes or finned pipes on site during production and installation is eliminated, and on-site installation work is also possible. Since it is extremely easy and strong mounting is possible, pipe damage due to shaking of the hull etc. is more economical in various aspects than the heating method by connecting conventional pipes and it is a very good heating method. The result will come out.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a finned heating unit according to the present invention, which has a relatively small diameter even for a large-diameter pipe.

FIG. 2 shows a cross-sectional view near the inlet.

FIG. 3 shows a cross section in the central part.

FIG. 4 shows a lid with baffles, especially at the entrance.

FIG. 5 shows a longitudinal sectional view of a heating unit with a fin having a relatively large diameter.

FIG. 6 is a cross-sectional view near its inlet showing the arrangement of baffles with the inlet for heating steam or oil.

FIG. 7 is a transverse cross-sectional view in the central portion, showing the shape of fins and the shape of baffles together with the outer tube and the inner tube.

[Explanation of symbols]

 1 Pipe of Heating Unit Main Body 2 Fin 3 Inlet Lid 4 Outlet Lid 5 Baffle Plate with Inlet Lid 6 Baffle Plate with Outlet Lid 7 Arm Plate for Mounting 8 7 Arm Plate for 7 9 Heating Steam Pipe or Oil Pipe with Inlet Lid 10 Heating Steam Pipe or Oil Pipe with Outlet Lid 11 Heating Oil Pipe with Outlet Lid 12 Same as above 100 Outer Pipe of Large Diameter Heating Unit 101 Inner Pipe of Large Diameter Heating Unit 102 Entrance Lid 103 Outlet Lid 104 Obstacle with Inner Pipe Plate 105 Fin with outer tube 106 Steam inlet pipe for heating 107 Steam outlet pipe for heating 108 Oil inlet pipe for heating 109 Oil outlet pipe for heating

Claims (3)

[Scope of utility model registration request] 1. A fin is an effective method for heating a liquid with steam or high-temperature heating oil to increase the contact area with the liquid to be heated. Many pipes are used as spliced pipes, but a large number of fins are attached to the circumference of one pipe with a diameter as large as possible to increase the effective heating area. A heating unit that will be. 2. A pipe having a fin only on the surface of the pipe or a pipe having a larger diameter is required because it is required to have a different structure depending on the diameter of the pipe to be used and the diameter of the pipe to be used. Is a heating unit with two types, not only the surface but also the inner heating surface as a double tube. 3. When the steam or heating oil for heating passes through the units, the passage is formed so as not to pass through by causing a certain turbulent flow so as to give a sufficient amount of heat to the liquid to be heated. A heating unit with a structure that provides appropriate obstacles to enhance the heat transfer effect.