JP2012035311A - Fluid transfer device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer a fluid while making the fluid remained in the middle of a fluid transfer path in accordance with the feed/exhaust of gas play a role as a valve.SOLUTION: The fluid transfer device is configured to combine an upper structure whose lower side is opened and a lower structure whose upper side is opened up and down. The upper structure includes: an upper cover; a first cylindrical wall elongating from the upper cover toward the lower side in the vertical direction; a second cylindrical wall elongating from the upper cover toward the lower side in the vertical direction at the inside in the radial direction of the first cylindrical wall; a discharge tube passing through the upper cover at the inside in the radial direction of the second cylindrical wall and having a discharge port at the upper edge side and an inlet port at the lower edge side; a first gas feed/exhaust tube connected to the upper cover at the inside in the radial direction of the second cylindrical wall; and a second gas feed/exhaust tube connected to the upper cover at the inside in the radial direction of the first cylindrical wall and also at the outside in the radial direction of the second cylindrical wall. The lower structure includes: a bottom plate; a third cylindrical wall elongating from the bottom plate toward the upper side in the vertical direction; and a fourth cylindrical wall elongating from the bottom plate toward the upper side in the vertical direction at the inside in the radial direction of the third cylindrical wall.

Description

  The present invention relates to an apparatus and a method for transferring a fluid, and more particularly to an apparatus and a method for transferring a fluid while acting as a valve on a fluid remaining in the middle of a fluid transfer path in accordance with supply and discharge of a gas.

  Various proposals have heretofore been made regarding devices and methods for transferring a fluid while allowing the fluid remaining in the middle of the fluid transfer path to act as a valve according to the supply and discharge of gas.

  In particular, according to such an apparatus and method, many proposals have been made for an apparatus and a method for transferring a high-temperature molten metal because it is not necessary to use a metal valve body.

  The inventor of the present application has also made several proposals as an inventor (for example, Patent Documents 1 and 2).

JP 2003-117649 A JP 2007-61906 A

  In the above-described conventional apparatus and method, the fluid remaining in the middle of the fluid transfer path plays a role of a valve according to the supply and discharge of gas, so that the fluid transfer path has a plurality of vertically extending vertical directions. It has a U-shaped structure in cross section, which includes a vertical tube, a U-shaped portion that connects the lower ends of adjacent vertical tubes, and an inverted U-shaped portion that connects the upper ends of adjacent vertical tubes. It was general.

  For example, when the apparatus having such a structure is used by being set in a storage tank in which high-temperature molten metal is stored, the internal structure may be damaged due to the influence of uneven heat. Even when an apparatus is manufactured using a refractory material such as ceramics in consideration of being deposited in a high-temperature molten metal, the internal structure may be damaged.

  In this case, it is difficult to disassemble and repair the internal damage, and in some cases, the entire apparatus has to be replaced.

  Therefore, the present invention is not limited to the case of transferring a high-temperature molten metal, and in the apparatus and method for transferring a fluid while acting as a valve to the fluid remaining in the middle of the fluid transfer path according to the supply and discharge of gas, There was a need to be able to achieve this with a simple structure.

The invention described in claim 1
A fluid transfer device formed by combining an upper structure opened on the lower side in the vertical direction and a lower structure opened on the upper side in the vertical direction,
The upper structure is
An upper lid,
A first cylindrical wall extending vertically downward from the upper lid;
A second cylindrical wall extending from the upper lid toward the lower side in the vertical direction on the radially inner side of the first cylindrical wall;
The second cylindrical wall has a discharge port on the upper end side that passes through the upper lid on the radially inner side and extends upward in the vertical direction from the upper lid, and a suction port on the lower end side that extends downward in the vertical direction from the upper lid. A discharge pipe;
A first gas supply / discharge pipe connected to the upper lid on the radially inner side of the second cylindrical wall;
A second gas supply / exhaust pipe connected to the upper lid on the radially inner side of the first cylindrical wall and on the radially outer side of the second cylindrical wall,
The lower structure is
The bottom plate,
A third tubular wall extending vertically upward from the bottom plate;
A fourth cylindrical wall extending radially upward of the third cylindrical wall from the bottom plate toward the upper side in the vertical direction,
Combining the upper structure and the lower structure vertically,
A first fluid transfer path between the first cylindrical wall and the third cylindrical wall;
A second fluid transfer path between the second cylindrical wall and the third cylindrical wall;
A third fluid transfer path between the second cylindrical wall and the fourth cylindrical wall;
A fluid storage chamber radially inward of the fourth cylindrical wall;
A first space continuous to the first fluid transfer path and the second fluid transfer path between an upper end of the third cylindrical wall and the upper lid;
A second space portion continuous between the second fluid transfer path and the third fluid transfer path between the lower end of the second cylindrical wall and the bottom plate;
The fluid transfer device is characterized in that a third space continuous to the third fluid transfer path and the fluid storage chamber is formed between an upper end of the fourth cylindrical wall and the upper lid, respectively.

The invention according to claim 2
When the upper structure and the lower structure are combined up and down to form the fluid transfer device,
A length of the first cylindrical wall extending vertically downward from the upper lid;
A length of the second cylindrical wall extending vertically downward from the upper lid;
The discharge pipe has the same length that extends downward from the upper lid in the vertical direction,
A length of the third cylindrical wall extending from the bottom plate toward the upper side in the vertical direction;
The fluid transfer device according to claim 1, wherein the fourth cylindrical wall has the same length extending from the bottom plate toward the upper side in the vertical direction.

The invention described in claim 3
A fluid transfer method for sinking the fluid transfer device according to claim 1 or 2 in a fluid storage tank and transferring the fluid stored in the fluid storage tank via the fluid transfer device,
In the atmospheric pressure state, the fluid storage tank stores the fluid through the first fluid transfer path, the first space part, the second fluid transfer path, the second space part, the third fluid transfer path, and the third space part. A fluid storing step for storing fluid in the lower end side of the chamber and the discharge pipe;
Subsequently, with the second gas supply / exhaust pipe open, gas is supplied via the first gas supply / exhaust pipe, and fluid is present at the lower end side of the third fluid transfer path. A first pressurizing step of pressurizing the third space with a predetermined pressure;
Subsequently, the gas is supplied through the second gas supply / exhaust pipe while maintaining the pressurized state of the third space portion by the first pressurizing step, and the lower end side and the second of the first fluid transfer path are supplied. Pressurizing the first space with the same predetermined pressure as in pressurizing the third space in the first pressurizing step in the state where fluid exists in the lower end side of the fluid transfer path. A second pressurizing step;
Subsequently, while maintaining the pressurized state of the first space portion by the second pressurizing step, further gas is supplied through the first gas supply / exhaust pipe, and the lower end side of the third fluid transfer path At a pressure higher than the predetermined pressure in a state where fluid is present in the fluid storage chamber and in a state where the fluid level of the fluid in the fluid storage chamber does not drop to the height of the suction port on the lower end side of the discharge pipe. And a third pressurizing step of discharging the fluid from the fluid storage chamber through the discharge port of the discharge pipe by pressurizing the third space.

  According to the present invention, in a device and a method for transferring a fluid while acting as a valve to a fluid remaining in the middle of a fluid transfer path in accordance with supply and discharge of gas, this can be realized with a simpler structure. Can do.

  In addition, in the apparatus and method for transferring the fluid while acting as a valve to the fluid remaining in the middle of the fluid transfer path according to the supply and discharge of gas, despite adopting a simple structure, more A method of transferring a desired amount of fluid at high pressure can be provided.

It is a conceptual diagram showing the structure of the fluid transfer apparatus which concerns on this invention, Comprising: (a) The side view of an upper structure, (b) The top view of an upper structure, (c) The side view of a lower structure, (d) The top view of a lower structure, (e) The side view of the fluid transfer apparatus of this invention comprised combining the upper structure and the lower structure up and down, (f) The top view of the fluid transfer apparatus of this invention. It is a conceptual diagram explaining the fluid transfer method which concerns on this invention, Comprising: Sectional drawing showing the state which the fluid flowed in into the fluid transfer apparatus of this invention under atmospheric pressure conditions. It is a conceptual diagram explaining the fluid transfer method which concerns on this invention, Comprising: Sectional drawing showing the state which the 1st pressurization process has progressed from the state of FIG. 1 illustration. It is a key map explaining the fluid transfer method concerning the present invention, and is a sectional view showing the state where the 1st pressurization process was completed. It is a key map explaining the fluid transfer method concerning the present invention, and is a sectional view showing the state where the 2nd pressurization process was completed. It is a key map explaining the fluid transfer method concerning the present invention, and is sectional drawing showing the state where fluid is discharged from a discharge mouth by the 3rd pressurization process. It is a conceptual diagram which shows the principle of the fluid transfer method which concerns on this invention, Comprising: (a) The fluid flows in into each fluid transfer path in a fluid transfer pipe in an atmospheric pressure state, and the liquid level in each fluid transfer path is the same high FIG. 7B is a cross-sectional view for explaining the state of the vertical position, and FIG. 7B is a step of pressurizing the rightmost fluid transfer path 24a with a pressure Q that is Q larger than the atmospheric pressure from the state shown in FIG. A sectional view for explaining the completed state, (c) a sectional view for explaining a state in which the step of pressurizing the inverted U-shaped portion 25b with the pressure Q is subsequently completed, and (d) subsequently, an inverted U-shaped portion 25d. Sectional drawing explaining the state which the process of pressurizing with pressure Q was completed, (e) Then, the process of pressurizing the reverse U-shaped part 25b with 2Q (2 times Q) larger than atmospheric pressure. FIG. 8 is a cross-sectional view illustrating a state in which the fluid transfer is completed; Sectional drawing explaining the state where the process which pressurizes a with the pressure 2Q was completed, (g) Then, in the figure, the pressure 3Q which is 3Q (3 times Q) larger than the atmospheric pressure in the fluid transfer path 24a at the right end. Sectional drawing explaining the state which completed the process of pressurizing in FIG. It is a conceptual diagram explaining an example by which the fluid transfer method of the present invention is carried out by the fluid transfer device of the present invention, and is a schematic cross-sectional view showing a state in which fluid flows into the fluid transfer device of the present invention under atmospheric pressure conditions . FIG. 9 is a schematic cross-sectional view illustrating a state in which the first pressurizing step is completed following the state illustrated in FIG. 8. FIG. 10 is a schematic cross-sectional view illustrating a state in which the second pressurizing step is completed following the state illustrated in FIG. 9. FIG. 11 is a schematic cross-sectional view illustrating a state in which fluid is discharged by a third pressurizing process following the state illustrated in FIG. 10.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic view showing a configuration of a fluid transfer device 21 of the present invention.

  The fluid transfer device 21 includes an upper structure 1 (FIG. 1A) that is open on the lower side in the vertical direction (lower side in FIG. 1A) and an upper side in the vertical direction (upper side in FIG. 1C). The lower structure 10 (FIG. 1 (c)) in which is open is combined vertically as shown in FIG. 1 (e).

  As shown in FIG. 1A, the upper structure 1 includes an upper lid 2, a first cylindrical wall 3 that extends downward from the upper lid 2 in the vertical direction, and a radially inner side of the first cylindrical wall 3. A second cylindrical wall 4 extending downward from the upper lid 2 in the vertical direction is provided.

  Further, the upper structure 1 penetrates the upper lid 2 on the radially inner side of the second cylindrical wall 4, and has a discharge port 5 on the upper end side extending in the vertical direction above the upper lid 2, and on the lower side in the vertical direction from the upper lid 2. Discharge pipes 7 each having a suction port 6 are provided on the extending lower end side.

  Furthermore, the upper structure 1 includes a first gas supply / exhaust pipe 8 connected to the upper lid 2 on the radially inner side of the second cylindrical wall 4, and a radially inner side of the first cylindrical wall 3. A second gas supply / exhaust pipe 9 connected to the upper lid 2 is provided outside the two cylindrical walls 4 in the radial direction.

  As shown in FIG. 1C, the lower structure 10 includes a bottom plate 11, a third cylindrical wall 12 extending from the bottom plate 11 toward the upper side in the vertical direction (upper side in FIG. 1C), and a third cylinder. A fourth cylindrical wall 13 extending from the bottom plate 11 toward the upper side in the vertical direction on the radially inner side of the wall 12.

  Such an upper structure 1 and lower structure 10 are combined vertically as shown in FIG. 1E to form a fluid transfer device 21 of the present invention.

  In the fluid transfer device 21, the upper structure 1 and the lower structure 10 are combined vertically so that the first fluid transfer path 14, the second fluid transfer path 15, the first structure, as shown in FIG. A three-fluid transfer path 16, a fluid storage chamber 17, a first space portion 18, a second space portion 19, and a third space portion 20 are formed.

  The first fluid transfer path 14 is between the first cylindrical wall 3 and the third cylindrical wall 12, and the second fluid transfer path 15 is between the second cylindrical wall 4 and the third cylindrical wall 12, The third fluid transfer path 16 is formed between the second cylindrical wall 4 and the fourth cylindrical wall 13, and the fluid storage chamber 17 is formed on the radially inner side of the fourth cylindrical wall 13.

  The first space 18 is formed continuously between the upper end of the third cylindrical wall 12 and the upper lid 2 in the first fluid transfer path 14 and the second fluid transfer path 15. The second fluid transfer path 15 and the third fluid transfer path 16 are continuously formed between the lower end of the second cylindrical wall 4 and the bottom plate 11, and the third space portion 20 is formed on the fourth cylindrical wall 13. A third fluid transfer path 16 and a fluid storage chamber 17 are formed continuously between the upper end and the upper lid 2.

  Thus, as shown in FIG. 1E, the discharge pipe 7 extends into the fluid storage chamber 17, the first gas supply / discharge pipe 8 communicates with the third space portion 20, and the second gas supply / discharge pipe 9 The space 18 communicates with the space 18.

  Position where the first cylindrical wall 3, the second cylindrical wall 4, the discharge pipe 7, the first gas supply / exhaust pipe 8, and the second gas supply / exhaust pipe 9 are arranged with respect to the upper lid 2 of the upper structure 1, the lower part The positions where the third cylindrical wall 12 and the fourth cylindrical wall 13 are arranged with respect to the bottom plate 11 of the structure 10 are the first fluid transfer path 14 and the second fluid transfer path as shown in FIG. 15, the third fluid transfer path 16, the fluid storage chamber 17, the first space portion 18, the second space portion 19, and the third space portion 20 are formed, the discharge pipe 7 extends into the fluid storage chamber 17, and the first gas It is determined in consideration of the structure in which the supply / discharge pipe 8 communicates with the third space portion 20 and the second gas supply / discharge pipe 9 communicates with the first space portion 18.

  In the upper structure 1 and the lower structure 10 constituting the fluid transfer device 21 of the present invention, the amorphous refractory is kneaded with water, poured into a predetermined mold, solidified, dried, and fired. Can be molded.

  In the illustrated embodiment, the first cylindrical wall 3, the second cylindrical wall 4, the third cylindrical wall 12, and the fourth cylindrical wall 13 are all cylindrical, but form the structure described above. If possible, it is not a cylindrical shape but a polygonal cylindrical shape such as a triangular cylindrical shape or a rectangular cylindrical shape when viewed from the plane or bottom as shown in FIGS. Can be.

  As described above, since the fluid transfer device 21 of the present invention is configured by combining the upper structure 1 and the lower structure 10 in the vertical direction, if the internal structure is damaged, remove it, The internal structure can be easily repaired.

  The fluid transfer according to the present invention using the fluid transfer device 21 of the present invention described above is performed as follows.

  First, the fluid transfer device 21 is installed in the fluid storage tank, and as described above, the first fluid transfer path 14, the second fluid transfer path 15, the third fluid transfer path 16, the fluid storage chamber 17, and the first space portion. 18, the upper structure 1 and the lower structure 10 are fixed in a state where the second space 19 and the third space 20 are formed.

(Fluid storage process)
As shown by arrows 31, 32, 33, 34, and 35 in FIG. 15, the fluid flows into the fluid storage chamber 17 and the lower end side of the discharge pipe 7 through the second space 19, the third fluid transfer path 16, and the third space 20 and is stored.

(First pressurization process)
Next, with the second gas supply / exhaust pipe 9 open, gas is supplied as indicated by an arrow 36 through the first gas supply / exhaust pipe 8, and the fluid 30 is supplied to the lower end side of the third fluid transfer path 16. The third space 20 is pressurized with a predetermined pressure (p1) in the presence of (FIGS. 3 and 4).

  Therefore, as shown in FIG. 4, the fluid 30 passes through the third fluid transfer path 16, the second space portion 19, the second fluid transfer path 15, the first space portion 18, and the first fluid transfer path 14 with an arrow 37. , 38, 39 and return to the fluid reservoir. Further, it flows into the suction port 6 of the discharge pipe 7 as indicated by an arrow 40 and rises inside the discharge pipe 7 as indicated by an arrow 41.

  As a result, a difference indicated by h occurs between the fluid level in the third fluid transfer path 16 and the fluid level in the fluid storage tank, and the fluid level in the fluid storage chamber 17 and the fluid in the discharge pipe 7 A difference indicated by h occurs between the liquid level and the liquid level.

  That is, a predetermined pressure (p 1) that causes a difference in liquid level indicated by h in the fluid 30 is applied to the third space portion 20.

  Under the present circumstances, the fluid which exists in the lower end side of the 3rd fluid transfer path 16 plays the role of a valve, and the pressure (p1) of the pressurized 3rd space part 20 is maintained.

  FIG. 3 shows that gas is supplied through the first gas supply / exhaust pipe 8 as shown by an arrow 36 while the second gas supply / exhaust pipe 9 is in an open state, and pressurization of the third space 20 is started. 4 shows a state in the middle of the state shown in the figure. The height of the fluid level in the third fluid transfer path 16 and the height of the fluid level in the fluid storage chamber 17 are the same.

  As shown in FIG. 2, when the fluid 30 is allowed to flow in at atmospheric pressure, the liquid level in the first gas supply / discharge pipe 8, the second gas supply / discharge pipe 9, and the discharge pipe 7 is the same as the liquid level in the fluid storage tank. In the state shown in FIG. 3, the liquid level in the second gas supply / discharge pipe 9 and the discharge pipe 7 is the same as the liquid level in the fluid storage tank.

  Therefore, the discharge amount when the fluid 30 is discharged from the fluid storage chamber 17 through the discharge port 5 of the discharge pipe 7 through the next second pressurization step and third pressurization step is as shown in FIG. The amount is constant based on the state.

  That is, in the atmospheric pressure state, the liquid level in the first gas supply / exhaust pipe 8, the second gas supply / exhaust pipe 9, and the discharge pipe 7 is the same as the liquid level in the fluid storage tank. Even in this state, the height of the liquid level in the second gas supply / discharge pipe 9 and the discharge pipe 7 is the same as the height of the liquid level in the fluid storage tank. Then, from the fluid existing in the portion from the liquid level height in the fluid storage chamber 17 defined by the upper end of the fourth cylindrical wall 13 to the liquid level height in the discharge pipe 7, a third to be described later. Discharge by a pressurization process is performed. Therefore, if the pressure applied in the third pressurizing step is always constant, a certain amount of fluid is discharged.

(Second pressurization process)
Next, the gas is supplied as shown by the arrow 42 through the second gas supply / exhaust pipe 9 while maintaining the pressurized state of the third space portion 20 in the first pressurizing step, and the first fluid transfer path 14 and the lower end side of the second fluid transfer path 15, the same predetermined pressure (the same pressure as when the third space portion 20 was pressurized in the first pressurizing step). The first space 18 is pressurized at p1).

  Since the first space 18 is pressurized at the same predetermined pressure (p1) as the third space 20 is pressurized in the first pressurizing step, the height of the fluid level of the first fluid transfer path 14 In the first pressurizing step, the fluid level between the fluid level in the fluid reservoir and the fluid level in the fluid reservoir is generated between the fluid level in the third fluid transfer path 16 and the fluid level in the fluid reservoir. The same difference as h is produced.

  In addition, the fluid in the second fluid transfer path 15 is pushed down by pressurizing the first space 18, and the fluid in the second fluid transfer path 15 is slightly in the third fluid transfer path 15 by the arrow 43. Flow as shown. And since the 1st space part 18 is pressurized with the same predetermined pressure (p1) which pressurized the 3rd space part 20 in the 1st pressurization process, as shown in FIG. The fluid level in the fluid transfer path 15 and the fluid level in the third fluid transfer path 15 are the same height.

  Under the present circumstances, the fluid which exists respectively in the lower end side of the 1st fluid transfer path 14 and the lower end side of the 2nd fluid transfer path 15 plays the role of a valve, and the 1st space part pressurized by the 2nd pressurization process 18 and the pressure (p1) of the third space portion 20 pressurized in the first pressurizing step are respectively maintained.

(Third pressurization process)
Next, while maintaining the pressurized state of the first space 18 by the second pressurizing step, gas is further supplied through the first gas supply / exhaust pipe 8 as indicated by the arrow 44, A state in which fluid is present on the lower end side of the third fluid transfer path 16 and a state in which the liquid level in the fluid storage chamber 17 does not drop to the height of the suction port 6 on the lower end side of the discharge pipe 7. Thus, the discharge of the discharge pipe 7 from the fluid storage chamber 17 is performed by pressurizing the third space portion 20 with a pressure (p2) higher than the predetermined pressure (p1) in the first pressurization step and the second pressurization step. The fluid is discharged through the outlet 5 as indicated by an arrow 45.

  When the third space portion 20 is pressurized at a pressure (p2) higher than the predetermined pressure (p1) in the first pressurization step and the second pressurization step, the liquid level of the fluid in the third fluid transfer path 16 6 descends as shown in FIG. 6, and the fluid moves from the third fluid transfer path 16 to the second fluid transfer path 15 as indicated by an arrow 46, and the predetermined pressure in the first pressurization process and the second pressurization process is determined. A difference in height indicated by a symbol X in FIG. 6 occurs between the fluid level of the fluid in the second fluid transfer path 15 continuing to the first space 18 that is pressurized by the pressure (p1).

  That is, the reference numeral X in FIG. 6 indicates the height of the fluid level in the second fluid transfer path 15 pressurized at a predetermined pressure (p1) in the first pressurization step and the second pressurization step. The third space 20, the third fluid transfer path 16, and the fluid storage chamber 17 are pressurized with a high pressure (p2) that causes a difference in height to be shown.

  On the other hand, since the discharge port 5 side of the discharge pipe 7 is in the atmospheric pressure state, the height of the liquid level of the fluid flowing from the fluid storage chamber 17 into the suction port 6 of the discharge pipe 7 as indicated by the arrow 40 is shown in FIG. It becomes a position shown by a virtual line.

  “Pressure applied to the third space portion 20 and the first space portion 18 in the first pressurization step and the second pressurization step, respectively (p1 = a reference numeral h in FIG. 4 and FIG. Pressure causing a difference in height to be shown) ”+“ pressure applied to the third space portion 20 in the third pressure step (p2 = the third space portion 20 in the first pressure step and the second pressure step, respectively) The pressure (P) of “the pressure causing the height difference indicated by the symbol X in FIG. 6 to the liquid surface receiving the pressure (p1) applied to the first space portion 18” is the liquid in the atmospheric pressure state. The difference between the height of the fluid level in the fluid storage chamber 17 and the height of the fluid level in the atmospheric pressure state in the height direction indicated by the phantom line in FIG. H is generated.

  Then, in the fluid rising in the discharge pipe 7 as indicated by the arrow 41, the fluid rising to a position higher than the discharge port 5 is discharged from the discharge port 5 as indicated by the arrow 45.

  Subsequently, the supply of gas to the first gas supply / exhaust pipe 8 and the second gas supply / exhaust pipe 9 is stopped, and the first gas supply / exhaust pipe 8 and the second gas supply / exhaust pipe 9 are opened, so that the fluid Returning to the storage step, as shown by arrows 31, 32, 33, 34, and 35 in FIG. 2A, the fluid 30 is transferred from the fluid storage tank to the first fluid transfer path 14 and the first space portion in the atmospheric pressure state. 18, arrows 31, 32, 33 in the lower end side of the fluid storage chamber 17 and the discharge pipe 7 through the second fluid transfer path 15, the second space 19, the third fluid transfer path 16, and the third space 20. , 34, 35, and stored.

  As described above, according to the fluid transfer method of the present invention, the fluid in the fluid storage chamber 17 can be discharged through the discharge port 5 of the discharge pipe 7 at the pressure P described above.

  As shown in FIG. 4, when the pressure p <b> 1 is applied to the third space 20, that is, the fluid storage chamber 17 and the third fluid transfer path 16, the liquid level in the third fluid transfer path 16 is It approaches the lower end side of the second cylindrical wall 4. When a pressure higher than p1 is applied to the third space portion 20 and the liquid level in the third fluid transfer path 16 reaches the lower end of the second cylindrical wall 4, it remains on the lower end side of the third fluid transfer path 16. The function of the valve due to the fluid is lost.

  For this reason, a large pressure exceeding p1 cannot be applied to the third space portion 20 in the first pressurizing step.

  However, in the present invention, by adopting the second pressurizing step, as described above, the pressure P larger than the pressure p1 is applied to the third space portion 20, that is, the fluid storage chamber 17, the third fluid transfer path. In addition to 16, the fluid in the fluid storage chamber 17 can be discharged through the discharge port 5 of the discharge pipe 7.

  The basic principle of the fluid transfer method of the present invention described above will be described with reference to FIG.

  Under atmospheric pressure, the fluid is respectively stored in the liquid level height position in FIG. 7A in the fluid transfer paths 24a, 24b, 24c, 24d, 24e, and 24f constituting the fluid transfer pipe 23 (for example, metal pipe). ing.

  The fluid transfer pipe 23 includes a fluid transfer path 24a, a fluid transfer path 24b, a fluid transfer path 24c, a fluid transfer path 24d, a fluid transfer path 24e, and a fluid transfer path 24f. The lower end side of the fluid transfer path 24a and the lower end side of the fluid transfer path 24b are transferred by the U-shaped portion 25a, and the lower end side of the fluid transfer path 24c and the lower end side of the fluid transfer path 24d are transferred by the U-shaped portion 25c. The lower end side of the path 24e and the lower end side of the fluid transfer path 24f are formed by the U-shaped part 25e, and the upper end side of the fluid transfer path 24b and the upper end side of the body transfer path 24c are set by the inverted U-shaped part 25b. The upper end side and the upper end side of the body transfer path 24e are connected to each other by an inverted U-shaped portion 25d.

  And the gas supply / discharge pipe 26a is connected to the upper end of the fluid transfer path 24a, the gas supply / discharge pipe 26b is connected to the upper part of the inverted U-shaped part 25b, and the gas supply / exhaust pipe 26c is connected to the upper part of the inverted U-shaped part 25d. The gas is supplied and discharged through the gas supply / discharge pipe.

  Under the atmospheric pressure, the gas supply / exhaust pipe 26b, the gas supply / exhaust pipe 26b, and the gas supply / exhaust pipe 26c are opened from the state shown in FIG. 7A. The fluid transfer path 24a was pressurized through the gas supply / exhaust pipe 26a with a pressure Q hectopascal larger than the atmospheric pressure state (the magnitude of this pressure is expressed as "Q" below). FIG. 7B).

  As a result, the fluid in the fluid transfer path 24a is lowered to the position shown in FIG. 7B according to the pressure difference Q, and the fluid in the fluid transfer path 24b is shown in FIG. 7B according to the pressure difference Q. Ascend to position.

  In this case, the fluid staying in the lower part in the fluid transfer path 24a functions as a valve, and the pressure Q in the fluid transfer path 24a is maintained.

  Next, the gas supply / discharge pipe 26c is maintained in an open state, and the inverted U-shaped portion 25b is passed through the gas supply / discharge pipe 26b while maintaining the pressure Q in the fluid transfer path 24a in FIG. Pressurization is performed with the same pressure Q (FIG. 7C). In this case, since the pressure in the fluid transfer path 24a is maintained at Q, the fluid in the fluid transfer path 24b slightly drops, the liquid level in the fluid transfer path 24b, and the liquid level in the fluid transfer path 24a. The height is the same.

  Further, the fluid in the fluid transfer path 24c is lowered to the same height as the liquid level in the fluid transfer path 24a in FIG. The fluid rises to the same height as the liquid level of the fluid in the fluid transfer path 24b in FIG.

  At this time, the fluid staying in the fluid transfer path 24b and the fluid staying at the lower end side of the fluid transfer path 24c each function as a valve, and in the fluid transfer path 24a and the inverted U-shaped portion 25b. The pressure Q is maintained.

  Next, while maintaining the pressure Q in the fluid transfer path 24a in FIGS. 7B and 7C and the pressure Q in the reverse U-shaped portion 25b in FIG. 7C, the reverse U-shaped portion 25d is gasified. Pressurization is performed at the same pressure Q through the supply / discharge pipe 26c (FIG. 7D).

  In this case, the fluid in the fluid transfer path 24e corresponds to the pressure difference Q, and the fluid level in the fluid transfer path 24a in FIG. 7B and the fluid level in the fluid transfer path 24c in FIG. The fluid moves down to the same height as the fluid level, and the fluid in the fluid transfer path 24f rises to the same height as the fluid level in the fluid transfer path 24b in FIG. 7B. To do.

  On the other hand, since the pressure in the inverted U-shaped portion 25b is maintained at Q, the fluid in the fluid transfer path 24d slightly drops, the liquid level in the fluid transfer path 24d, and the liquid level in the fluid transfer path 24c. The height is the same.

  In this case, the fluid staying in the fluid transfer path 24d and the fluid staying in the lower end side of the fluid transfer path 24e each function as a valve, and the pressure Q in the inverted U-shaped portion 25d is maintained. Has been.

  Next, while maintaining the pressure Q in the fluid transfer path 24a in FIGS. 7B and 7C and the pressure Q in the inverted U-shaped portion 25d in FIG. 7D, the inverted U-shaped portion 25b is maintained. Through the gas supply / exhaust pipe 26b, the pressure 2Q hectopascal is larger than the atmospheric pressure state (the pressure is twice as large as the Q hectopascal, and this pressure is expressed as “2Q” below. Pressure) (FIG. 7 (e)).

  As a result, the liquid level height of the fluid in the fluid transfer path 24b and the fluid transfer path 24c decreases, and the liquid level height of the fluid in the fluid transfer path 24a and fluid transfer path 24d increases.

  At this time, the fluid staying at the lower end side of the fluid transfer path 24b, the fluid transfer path 24c, and the fluid transfer path 24e functions as a valve, and the pressure Q in the fluid transfer path 24a and the inverted U-shaped portion 25b. The internal pressure 2Q and the internal pressure Q in the inverted U-shaped portion 25d are maintained.

  Next, while maintaining the pressure 2Q in the inverted U-shaped portion 25b and the pressure Q in the inverted U-shaped portion 25d in FIG. 7 (e), the fluid transfer path 24a is maintained via the gas supply / discharge pipe 26a. And pressurizing with a pressure of 2Q (FIG. 7F).

  As a result, the liquid level in the fluid transfer path 24a is lowered, and the liquid level in the fluid transfer path 24a and the fluid transfer path 24b is the same.

  At this time, the fluid staying at the lower end side of the fluid transfer path 24a and the fluid transfer path 24c serves as a valve, and the pressure 2Q in the fluid transfer path 24a and the pressure 2Q in the inverted U-shaped portion 25b are reduced. Is maintained.

  Subsequently, while maintaining the pressure 2Q in the inverted U-shaped portion 25b and the pressure Q in the inverted U-shaped portion 25d in FIGS. 7 (e) and 7 (f), the gas supply / exhaust in the fluid transfer path 24a is maintained. Via the pipe 26a, a pressure that is 3Q hectopascals larger than the atmospheric pressure state (a pressure that is three times larger than the above-mentioned Q hectopascals, and this pressure is expressed as "3Q" below) is applied. The pressure is applied (FIG. 7E).

  As described above, when there is a difference of Q hectopascals between the pressure in the reverse U-shaped portion 25b and the pressure in the fluid transfer path 24a (the pressure in the fluid transfer path 24a is higher in the reverse U-shaped portion 25b. In the case where Q hectopascal is larger than the pressure), the state of the fluid in the fluid transfer path 24a and the fluid transfer path 24b is as shown in FIG. 7B.

  Even in the state of FIG. 7G, there is a difference in Q hectopascal between the pressure (2Q) in the inverted U-shaped portion 25b and the pressure (3Q) in the fluid transfer path 24a (in the fluid transfer path 24a). The pressure is Q hectopascals larger than the pressure in the inverted U-shaped portion 25b. Therefore, the state shown in FIG. 7G (the pressure in the inverted U-shaped portion 25b is 2Q, and the pressure in the fluid transfer path 24a is 3Q. However, the state of the fluid in the fluid transfer path 24a and the fluid transfer path 24b is as shown in FIG. 7 (g), as in the case of FIG. 7 (b).

  That is, the vertical length of the fluid transfer path 24a, the fluid transfer path 24b, etc. in FIG. 7 is changed (particularly, in FIG. 7, the vertical direction increases as the fluid transfer path 24a on the left side approaches the fluid transfer path 24a on the right side. The magnitude of the pressure that can be applied to the fluid transfer path 24a without the need to increase the length in the direction is three times the pressure (Q) that can be initially applied in the state of FIG. It becomes possible to make it.

  This is because, by adopting the above-described process, the fluid staying at the lower end side of the fluid transfer path 24f, the U-shaped portion 25e, and the lower end side of the fluid transfer path 24e is larger in pressure by Q hectopascals than in the atmospheric pressure state. The fluid staying at the lower end side of the fluid transfer path 24d, the U-shaped portion 25c, and the lower end side of the fluid transfer path 24c functions as a valve against a pressure that is 2Q hectopascals larger than the atmospheric pressure state, The fluid staying at the lower end side of the fluid transfer path 24b, the U-shaped portion 25a, and the lower end side of the fluid transfer path 24a is exhibited by functioning as a valve against a pressure that is 3Q hectopascals larger than the atmospheric pressure state. is there.

  In the example shown in FIG. 7, only the fluid transfer path 24a to the fluid transfer path 24f are used. However, if the number of the fluid transfer paths to be used is further increased, the fluid staying at the lower end side of the fluid transfer path 24a. By allowing the valve to act as a valve, it is possible to apply a pressure that is much greater than the pressure that could be applied to the fluid transfer path 24a to the fluid transfer path 24a.

  The fluid transfer method of the present invention utilizes the principle described above.

  Thus, as in the apparatus of the present invention, the first fluid transfer path 14 and the second fluid described above are combined by combining the upper structure 1 whose lower end side is opened and the lower structure 10 whose upper end side is opened. The fluid transfer device is formed with the transfer path 15, the third fluid transfer path 16, the fluid storage chamber 17, the first space 18, the second space 19, and the third space 20, and the first cylindrical wall. 3 is a length extending from the upper lid 2 downward in the vertical direction, a second cylindrical wall 4 is extending from the upper lid 2 downward in the vertical direction, and the discharge pipe 7 is directed downward from the upper lid 2 in the vertical direction. The third cylindrical wall 12 extends from the bottom plate 11 upward in the vertical direction, and the fourth cylindrical wall 13 extends from the bottom plate 11 upward in the vertical direction. Even if it is a case, it will flow from the discharge outlet 5 of the discharge pipe 7. The pressure that can be applied to the third space portion 20 by first using the fluid retained at the lower end side of the third fluid transfer path 16 as a valve. Can be made larger.

  That is, in the first pressurizing step, the added pressure is added to the third space portion 20 in addition to the pressure that can be applied in the state where the fluid remains on the lower end side of the third fluid transfer path 16, and the discharge pipe 7. The discharge from the discharge port 6 can be performed.

  An embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same structure part as the structure part in the fluid transfer apparatus of this invention demonstrated using FIGS. 1-7 mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  Cylinder pressure generators 58 and 59 are connected to a compressor (not shown) through switching valves 51, 52, 53, 54, 55 and 56, and a pressure relief valve 57.

  The cylinder type pressure generator 58 generates the pressure p1 supplied to the third space part 20 in the first pressurizing process, and the cylinder type pressure generator 59 is supplied to the third space part 20 in the third pressurizing process. Used to generate pressure p2.

  In the illustrated embodiment, a fluid reservoir 61 that is recessed downward in the vertical direction is formed in the middle of a transfer pipe 60 that extends in the horizontal direction continuously to the discharge port 5.

  When the fluid 30 to be transferred is a high-temperature molten metal stored in the molten metal storage tank 50, a part of the discharged molten metal is always present here, so that the metal present in the discharge pipe 7 is present. This prevents the liquid surface of the molten metal from being oxidized.

  In addition, when the fluid 30 to be transferred is a high-temperature molten metal stored in the molten metal storage tank 50, the molten metal is obtained by changing the gas supplied from a compressor (not shown) to an inert gas such as nitrogen gas. Can be prevented from being oxidized.

  First, as shown in FIG. 8, the fluid flows into the fluid transfer device of the present invention under atmospheric pressure.

  Subsequently, in the first pressurizing step, an inert gas is supplied as indicated by an arrow 36 through the first gas supply / exhaust pipe 8 while the second gas supply / exhaust pipe 9 is kept open, and the third fluid In a state where the fluid 30 is present on the lower end side of the transfer path 16, the third space 20 is pressurized with a predetermined pressure (p1) (FIG. 9).

  Next, in the second pressurizing step, the inert gas is indicated by the arrow 42 through the second gas supply / exhaust pipe 9 while maintaining the pressurized state of the third space portion 20 in the first pressurizing step. The third space portion 20 was pressurized in the first pressurizing step in a state where fluid was present on the lower end side of the first fluid transfer path 14 and the lower end side of the second fluid transfer path 15 respectively. The first space 18 is pressurized with the same predetermined pressure (p1) as (1).

  Subsequently, in the third pressurizing step, as shown by the arrow 44 through the first gas supply / exhaust pipe 8 while maintaining the pressurized state of the first space 18 by the second pressurizing step, Further, a state where the gas is supplied and the fluid is present on the lower end side of the third fluid transfer path 16 and the level of the fluid level in the fluid storage chamber 17 is equal to that of the suction port 6 on the lower end side of the discharge pipe 7. By pressurizing the third space portion 20 with a pressure (p2) higher than the predetermined pressure (p1) in the first pressurization step and the second pressurization step without being lowered to the height, the fluid storage chamber The fluid is discharged from 17 through the discharge port 5 of the discharge pipe 7 as shown by an arrow 45 (FIG. 11).

  The preferred embodiments and examples of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to such embodiments and examples, and is understood from the description of the claims. Various changes can be made within the scope.

  As a technique for casting various industrial products and the like, a low pressure casting technique in which a molten metal is fed into a mold and molded is conventionally known.

  In this low pressure casting technology, a molten metal supply device is submerged in the molten metal, the molten metal is absorbed into the molten metal, the absorbed molten metal is sent to a mold, and the molten metal is cooled in the mold. A molded product is molded.

  In this case, since the molten metal supply device submerged in the molten metal needs to be used for a long time at a high temperature, it is important to configure the device with a refractory.

  However, even if the apparatus is composed of a refractory material, it is difficult to completely prevent damage under a high-temperature molten metal, and the damaged portion may be forced to be repaired.

  In such a case, in the internal cavity type molten metal supply device, there may be a portion that is difficult to repair depending on the damaged portion, and thus there is a possibility that the repair cost increases.

  Therefore, it is necessary to review the configuration of the conventional molten metal supply device and improve it to a molten metal supply device that can perform casting as usual with a simple configuration.

  In response to such a demand, the present invention can provide a molten metal supply apparatus and a supply method for performing conventional casting with a simple configuration in a molten metal supply apparatus used in low pressure casting technology.

  Therefore, compared with the conventional molten metal supply apparatus, it is possible to configure the apparatus at a low cost, and it is possible to perform casting with a simple configuration.

1 Upper structure 2 Upper lid 3 First cylindrical wall 4 Second cylindrical wall 5 Discharge port 6 Suction port 7 Discharge tube 8 First gas supply / discharge tube 9 Second gas supply / discharge tube 10 Lower structure 11 Bottom plate 12 Third Cylindrical wall 13 fourth cylindrical wall 14 first fluid transfer path 15 second fluid transfer path 16 third fluid transfer path 17 fluid storage chamber 18 first space part 19 second space part 20 third space part 21 fluid transfer device 30 Fluid 50 Fluid storage tank

Claims (3)

A fluid transfer device formed by combining an upper structure opened on the lower side in the vertical direction and a lower structure opened on the upper side in the vertical direction,
The upper structure is
An upper lid,
A first cylindrical wall extending vertically downward from the upper lid;
A second cylindrical wall extending from the upper lid toward the lower side in the vertical direction on the radially inner side of the first cylindrical wall;
The second cylindrical wall has a discharge port on the upper end side that passes through the upper lid on the radially inner side and extends upward in the vertical direction from the upper lid, and a suction port on the lower end side that extends downward in the vertical direction from the upper lid. A discharge pipe;
A first gas supply / discharge pipe connected to the upper lid on the radially inner side of the second cylindrical wall;
A second gas supply / exhaust pipe connected to the upper lid on the radially inner side of the first cylindrical wall and on the radially outer side of the second cylindrical wall,
The lower structure is
The bottom plate,
A third tubular wall extending vertically upward from the bottom plate;
A fourth cylindrical wall extending radially upward of the third cylindrical wall from the bottom plate toward the upper side in the vertical direction,
Combining the upper structure and the lower structure vertically,
A first fluid transfer path between the first cylindrical wall and the third cylindrical wall;
A second fluid transfer path between the second cylindrical wall and the third cylindrical wall;
A third fluid transfer path between the second cylindrical wall and the fourth cylindrical wall;
A fluid storage chamber radially inward of the fourth cylindrical wall;
A first space continuous to the first fluid transfer path and the second fluid transfer path between an upper end of the third cylindrical wall and the upper lid;
A second space portion continuous between the second fluid transfer path and the third fluid transfer path between the lower end of the second cylindrical wall and the bottom plate;
A fluid transfer device, wherein a third space portion is formed between the upper end of the fourth cylindrical wall and the upper lid, the third space portion being continuous with the third fluid transfer path and the fluid storage chamber. When the upper structure and the lower structure are combined up and down to form the fluid transfer device,
A length of the first cylindrical wall extending vertically downward from the upper lid;
A length of the second cylindrical wall extending vertically downward from the upper lid;
The discharge pipe has the same length that extends downward from the upper lid in the vertical direction,
A length of the third cylindrical wall extending from the bottom plate toward the upper side in the vertical direction;
The fluid transfer device according to claim 1, wherein the fourth cylindrical wall has the same length extending from the bottom plate toward the upper side in the vertical direction. A fluid transfer method for sinking the fluid transfer device according to claim 1 or 2 in a fluid storage tank and transferring the fluid stored in the fluid storage tank via the fluid transfer device,
In the atmospheric pressure state, the fluid storage tank stores the fluid through the first fluid transfer path, the first space part, the second fluid transfer path, the second space part, the third fluid transfer path, and the third space part. A fluid storing step for storing fluid in the lower end side of the chamber and the discharge pipe;
Subsequently, with the second gas supply / exhaust pipe open, gas is supplied via the first gas supply / exhaust pipe, and fluid is present at the lower end side of the third fluid transfer path. A first pressurizing step of pressurizing the third space with a predetermined pressure;
Subsequently, the gas is supplied through the second gas supply / exhaust pipe while maintaining the pressurized state of the third space portion by the first pressurizing step, and the lower end side and the second of the first fluid transfer path are supplied. Pressurizing the first space with the same predetermined pressure as in pressurizing the third space in the first pressurizing step in the state where fluid exists in the lower end side of the fluid transfer path. A second pressurizing step;
Subsequently, while maintaining the pressurized state of the first space portion by the second pressurizing step, further gas is supplied through the first gas supply / exhaust pipe, and the lower end side of the third fluid transfer path At a pressure higher than the predetermined pressure in a state where fluid is present in the fluid storage chamber and in a state where the fluid level of the fluid in the fluid storage chamber does not drop to the height of the suction port on the lower end side of the discharge pipe. And a third pressurizing step of discharging the fluid from the fluid storage chamber through the discharge port of the discharge pipe by pressurizing the third space.

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