JP2007204096A - Oil transport apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil transport apparatus for discharging fuel oil in a fuel oil tank with less effort and in a short time even when it is fuel oil. <P>SOLUTION: A spherical body 11 is heated by sending steam to the body 11 through a steam channel 15. The heated body 11 is immersed in fuel oil in a fuel oil tank for heating the fuel oil and for increasing its fluidity. The fuel oil is drawn from a drawing opening 12 of the body 11 to be discharged outside of the tank. Thus, even when it is the fuel oil left at the bottom of the tank, it is discharged with less effort and in a short time because of an increased fluidity for easy draining. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an oil transfer device that transfers oil having a high pour point in an oil tank, and is suitable for use in, for example, fuel oil removal that removes fuel oil remaining at the bottom of a fuel oil tank.

  A fuel oil tank that stores fuel oil serving as boiler fuel in a thermal power generation facility has, for example, a configuration that includes a ceiling that moves up and down in accordance with the amount of fuel oil with respect to a large-diameter cylindrical body. At the bottom of the cylindrical main body, there are provided a pump outlet for taking out fuel oil and a manhole for workers to enter by inspection. In addition, a manhole or the like for performing various operations is also provided in the ceiling part that moves up and down. The fuel oil in the fuel oil tank is heated by a heater for heating using steam as a heat source, and a desired viscosity is maintained.

  When checking or cleaning the fuel oil tank, a pump is connected to the pump outlet, the fuel oil in the fuel oil tank is discharged, and an operator enters from the manhole for inspection and cleaning. At this time, the fuel oil below the pump outlet is difficult to discharge by the pump, and the fuel oil in the vicinity of the bottom surface has many impurities, so that the heating effect is obtained only by heating with the heater for heating. The situation is difficult.

  For this reason, steam for heating the remaining fuel oil is separately supplied or the fuel oil is scraped out by workers. However, when steam is supplied separately, the work takes time and the efficiency is low, and the scraping work by the worker requires a lot of labor and the work environment is bad.

  Thus, conventionally, it has been proposed to clean the inside of the fuel oil tank (discharge the fuel oil) by spraying a cleaning solvent from above (see, for example, Patent Document 1). By using the cleaning solvent, the fuel oil mixed with impurities can be pulverized and dissolved, and the inside of the fuel oil tank can be easily cleaned.

  However, in the prior art, since a cleaning solvent is used for the remaining fuel oil, another substance is added to the fuel oil, which changes the properties of the fuel oil. For this reason, although it is effective when it is set as the technique specialized in cleaning, it cannot apply to the technique which reuses fuel oil. In addition, since the cleaning solvent is sprayed from above, it takes time for the cleaning solvent to penetrate to the lower layer of the remaining fuel oil, and it takes work time to perform effective cleaning.

JP-A-6-126262

  The present invention has been made in view of the above situation, and an object of the present invention is to provide an oil transfer device that can transfer oil in an oil tank in a short time and without requiring much labor. It is an object of the present invention to provide an oil transfer device applicable to fuel oil removal that can discharge fuel oil remaining in the lower part of a tank.

  In order to achieve the above object, a first aspect of the present invention is an oil transfer device that is inserted into an oil tank and sucks out the oil therein, and is formed into a spherical body inserted into the oil tank and a spherical body Suction port, a long tube member communicating with the suction port, a heating medium flow passage formed in a spherical body, and a heating medium provided integrally with the long tube member communicating with the heating medium flow passage An oil transfer apparatus comprising: a heating medium supply means for collecting a heating medium sent from the heating medium flow path to the flow path and heating the spherical body to recover the heat recovery medium. It is in.

  In the first aspect, the spherical body is heated by sending the heating medium to the spherical body through the heating medium flow path, and the heated spherical body is immersed in the oil in the oil tank to thereby obtain the oil. Heating improves fluidity, sucks oil from the suction port, and discharges the oil to the outside of the oil tank through the long tube member. Oil can be transferred. Even when the spherical body immersed in the oil is moved in the oil tank, a situation in which the spherical body is brought into contact with a pipe or the like in the oil tank and caught on the structure is avoided.

  According to a second aspect of the present invention, in the oil transfer device according to the first aspect, a fin is provided on the surface of the spherical body.

  In the second aspect, the surface area of the spherical body can be increased by the fins, and heating can be performed efficiently.

  According to a third aspect of the present invention, in the oil transfer device according to the first or second aspect, the state of the spherical body in the oil tank is adjusted by supporting the long tube member in an arbitrary state outside the oil tank. An oil transfer apparatus comprising a support member.

  In the third aspect, by supporting the long tube member in an arbitrary state, the spherical body in the oil tank can be adjusted to an arbitrary state such as movement, tilting, and swinging in one direction.

  According to a fourth aspect of the present invention, in the oil transfer device according to any one of the first to third aspects, the spherical body is made of iron, and the heating medium is steam.

  In the fourth aspect, the iron spherical body can be efficiently heated with steam.

  According to a fifth aspect of the present invention, in the oil transfer device according to any one of the first to fourth aspects, a heating member that radiates far infrared rays is formed on the surface of the inner wall of the oil tank. Located in the oil transfer device.

  In the fifth aspect, far infrared rays are emitted by the heating member, and oil heating is promoted.

  According to a sixth aspect of the present invention, in the oil transfer device according to any one of the first to fifth aspects, the ceiling of the oil tank is provided so as to be movable up and down, and the sphere is suspended from the ceiling portion of the oil tank. A heating member that radiates far infrared rays is formed on the surface of the oil transfer device.

  In the sixth aspect, it is possible to efficiently heat the oil in the oil tank having the ceiling that moves up and down.

  A seventh aspect of the present invention is the oil transfer apparatus according to the fifth or sixth aspect, wherein the heating member is zeolite.

  In the seventh aspect, far-infrared rays can be emitted from the zeolite to heat the oil.

  According to an eighth aspect of the present invention, in the oil transfer device according to any one of the first to seventh aspects, the oil oil is stored in the oil tank as fuel for the boiler of the power generation facility, and the fuel oil is removed. In the oil transfer device characterized.

  In the eighth aspect, the fuel oil in the fuel oil tank can be removed in a short time and without requiring much labor.

  The oil transfer device of the present invention is an oil transfer device that can transfer oil in an oil tank in a short time without requiring a great deal of labor even if the oil has a high pour point.

  FIG. 1 is an external view showing the whole of a fuel oil tank to which a fuel oil removing device as an oil transfer device according to an embodiment of the present invention is applied, and FIG. 2 is an oil transfer according to an embodiment of the present invention. The concept of a state in which fuel oil is recovered by a fuel oil removing device, which is a device, FIG. 3 is an external view of the fuel oil removing device, and FIG. 4 is a schematic configuration of a state in which fuel oil is being discharged by the fuel oil removing device FIG. 5 shows a schematic configuration representing the internal structure of the fuel oil tank.

  As shown in FIG. 1, a fuel oil tank 1 as an oil tank for storing boiler fuel oil in a thermal power plant is provided such that a ceiling 3 can be raised and lowered with respect to a cylindrical main body 2 according to the capacity of the inside. ing. A manhole 4 for checking and cleaning the inside of the fuel oil tank 1 is provided at the lower part of the main body 2. Normally, the fuel oil tank 1 is heated by, for example, steam, and the viscosity of the fuel oil as oil is maintained in a desired state. When checking the inside of the fuel oil tank 1 or the like, the fuel oil inside is discharged from the manhole 4 or the like, and an operator enters the fuel oil tank 1 from the manhole 4 to perform the check or the like. The fuel oil in the vicinity of the bottom of the fuel oil tank 1 is less likely to be heated by the steam, so the fluidity tends to deteriorate. In particular, the fuel oil collected near the bottom below the manhole 4 is not easily heated and discharged ( Transport) is difficult.

  For this reason, as shown in FIG. 2, the fuel oil collected near the bottom using a fuel oil removing device 5 as an oil transfer device is sucked out by a transfer pump 6 and discharged (transferred), and once stored in another tank 7. And reuse it. Depending on the state of the fuel oil, processing such as suction by the transfer pump 6, recovery in the recovery tank 8, and disposal is performed. The fuel oil in the vicinity of the bottom which is difficult to be heated is heated by the function of the fuel oil removing device 5 and the viscosity is maintained in a desired state. Further, the temperature of the fuel oil in the vicinity of the bottom which is difficult to be heated is maintained at a desired state by maintaining the temperature by a heating member that radiates far infrared rays, which will be described later. As a result, the fuel oil remaining in the lower portion of the fuel oil tank can be discharged in a short time and without requiring much labor.

  Based on FIG. 3, the structure of the fuel oil removal apparatus 5 is demonstrated in detail.

  As shown in the figure, the fuel oil removing device 5 includes an iron spherical body 11 inserted into the fuel oil tank 1, and a suction for sucking the fuel oil accumulated near the bottom portion below the spherical body 11. A mouth 12 is provided. On the other hand, a suction pipe 13 as a long pipe member is connected to the spherical body 11, and the suction pipe 13 communicates with the suction port 12 through a passage 14. The suction pipe 13 is connected to the transfer pump 6 (see FIG. 2), and fuel oil is sucked from the suction port 12 through the passage 14 by driving the transfer pump 6 (see FIG. 2).

  The spherical body 11 is formed with a steam flow path 15 as a heating medium flow path, and the steam flow path 15 is formed between an inlet portion 15a and an outlet portion 15b. A steam supply pipe 16 serving as a heating medium supply / recovery means is connected to the inlet 15a of the steam flow path 15, and a steam recovery pipe 17 serving as a heating medium supply / recovery means is connected to the outlet 15b of the steam flow path 15. Is connected. The steam supply pipe 16 and the steam recovery pipe 17 are provided integrally with the suction pipe 13.

  When a steam for heating is sent from a steam source (not shown) to the steam supply pipe 16, the steam is sent from the inlet portion 15 a to the steam flow path 15 to heat the spherical body 11, and the recovered steam is discharged from the outlet portion. It is recovered from 15 b through the steam recovery pipe 17. For this reason, the iron spherical body 11 is heated by steam. The heated spherical body 11 is immersed in the fuel oil in the vicinity of the bottom of the fuel oil tank 1 (see FIG. 2), and the fuel oil is heated by the spherical body 11 so that the fuel oil around the spherical body 11 flows. This improves the performance and facilitates the suction from the suction port 12.

  A plurality of fins 18 are provided on the surface of the spherical body 11, and the surface area of the spherical body 11 is sufficiently secured by the fins 18. For this reason, the surface area of the spherical body 11 can be increased by the fins 18, and the fuel oil can be efficiently heated.

  As shown in FIG. 4, in the fuel oil removing device 5 described above, the spherical body 11 is inserted into the fuel oil tank 1 from the manhole 4 of the fuel oil tank 1, and as shown in FIGS. The suction pipe 13 in which the 16 and the steam recovery pipe 17 are integrally provided is supported by the support member 21 outside the fuel oil tank 1. The support member 21 includes a rotation / tilting table 22 on which the suction pipe 13 is placed, and the suction pipe 13 can be adjusted to an arbitrary angular position. Further, the rotation / tilting table 22 is provided with a roller 23, and the suction tube 13 is supported by the roller 23 so as to be movable in the axial direction. Therefore, the suction pipe 13 is supported in an arbitrary state, and the state of the spherical body 11 in the fuel oil tank 1 is adjusted to an arbitrary state such as movement in one direction, tilting, swinging, etc. be able to.

  Furthermore, as shown in FIG. 5, the ceiling 3 of the fuel oil tank 1 is supported by an elevating means 25 so as to be movable up and down based on the remaining amount of fuel oil. The inner surface of the ceiling 3 (the surface of the inner wall of the fuel oil tank) and the upper surface of the bottom plate 26 (the surface of the inner wall of the fuel oil tank) are coated with zeolite 27 as a heating member, and far infrared rays are emitted. For this reason, infrared rays can be uniformly emitted into the fuel oil tank 1 by the zeolite 27, and the fuel oil can be heated.

  The ceiling 3 is provided with a deck manhole 28, and a sphere 31 is suspended from the deck manhole 28. A large number of flat portions are formed on the surface of the sphere 31 to form a mirror ball. The many flat portions are coated with zeolite 32 as a heating member, and far infrared rays are emitted. For this reason, even when the ceiling 3 is lowered, infrared rays can be emitted to the vicinity of the fuel oil in the fuel oil tank 1 by the zeolite 32 of the sphere 31, and the fuel oil in the fuel oil tank 1 having the ceiling 3 that moves up and down Heating can be performed efficiently.

  In the illustrated example, the fuel oil tank 1 has a ceiling 3 that can be raised and lowered. However, when a fuel oil tank having a fixed ceiling is applied, the fuel oil tank 1 is disposed on the inner side of the side wall (the surface of the inner wall of the fuel oil tank). Zeolite 27 can be coated.

  By using the fuel oil removing device 5 described above, steam is sent to the spherical body 11 through the steam flow path 15 to heat the spherical body 11, and the heated spherical body 11 is stored in the fuel oil tank 1. By dipping in the fuel oil, the fuel oil is heated to improve the fluidity, and the fuel oil can be sucked from the suction port 12 of the spherical body 11 and discharged to the outside of the fuel oil tank 1. Even if the spherical body 11 immersed in the fuel oil is moved in the fuel oil tank 1, a situation in which the spherical body 11 comes into contact with a pipe or the like in the fuel oil tank 1 and gets caught by the structure is avoided. For this reason, even the fuel oil remaining at the bottom of the fuel oil tank 1 can be easily discharged with improved fluidity, and in a short time without requiring much labor, The remaining fuel oil can be discharged.

  In the above-described embodiment, the example applied to the discharge of the fuel oil has been described. However, the present invention is not limited to the fuel oil but can be widely applied to the conveyance (transfer) of oil having a high pour point.

  The present invention can be used in the industrial field of an oil transfer device that transfers oil having a high pour point in an oil tank, for example, a fuel oil removal device that removes fuel oil remaining at the bottom of a fuel oil tank.

It is an external view showing the whole fuel oil tank to which the fuel oil removal device which is an oil transfer device concerning one example of the present invention is applied. It is a conceptual diagram of the state which has collect | recovered fuel oil with the fuel oil removal apparatus which is an oil transfer apparatus which concerns on the example of 1 embodiment of this invention. It is an external view of a fuel oil removal apparatus. It is a schematic block diagram of the state which has discharged | emitted fuel oil with the fuel oil removal apparatus. It is a schematic block diagram showing the internal structure of a fuel oil tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Main body 3 Ceiling 4 Manhole 5 Fuel oil removal apparatus 6 Transfer pump 7 Separate tank 8 Recovery tank 11 Spherical body 12 Suction port 13 Suction pipe 14 Passage 15 Steam flow path 16 Steam supply pipe 17 Steam recovery pipe 18 Fin 21 Support Member 22 Rotating / tilting table 23 Roller 25 Lifting means 26 Bottom plate 27, 32 Zeolite 28 Deck manhole 31 Sphere

Claims (8)

An oil transfer device that is inserted into an oil tank and sucks out internal oil,
A spherical body inserted into the oil tank;
A suction port formed in a spherical body;
A long tube member communicating with the suction port;
A heating medium flow passage formed in a spherical body;
The heating medium is fed from the heating medium flow path to the heating medium flow path that is communicated with the heating medium flow path and is provided integrally with the long tube member, and the spherical body is heated to recover the heat. An oil transfer device comprising: a heating medium supply / recovery means for recovery. The oil transfer device according to claim 1,
An oil transfer device characterized in that fins are provided on the surface of the spherical body. In the oil transfer device according to claim 1 or 2,
An oil transfer device comprising a support member that supports a long tube member in an arbitrary state outside an oil tank and adjusts a state of a spherical body in the oil tank. In the oil transfer device according to any one of claims 1 to 3,
An oil transfer device characterized in that the spherical body is made of iron and the heating medium is steam. In the oil transfer device according to any one of claims 1 to 4,
An oil transfer device, wherein a heating member that radiates far infrared rays is formed on a surface of an inner wall of an oil tank. In the oil transfer device according to any one of claims 1 to 5,
An oil transfer apparatus, wherein the ceiling of the oil tank is provided so as to be movable up and down, a sphere is suspended from the ceiling of the oil tank, and a heating member that radiates far infrared rays is formed on the surface of the sphere. In the oil transfer device according to claim 5 or 6,
An oil transfer device, wherein the heating member is zeolite. In the oil transfer device according to any one of claims 1 to 7,
An oil transfer device characterized in that fuel oil as fuel for a boiler of a power generation facility is stored in an oil tank, and the fuel oil is removed.

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