JP6178262B2 - Tank holding device and fixed structure - Google Patents

Description

  Embodiments described herein relate generally to a tank holding device and a fixed structure that hold a tank against the ground.

  Large tanks for storing large quantities of oil and the like are installed in power plants and oil complexes. Since such a tank is placed on the ground outdoors without being fixed to the ground, there is a risk of falling if an earthquake occurs. In addition, when a tsunami occurs, seawater may flow around the tank and the tank may be washed away.

  In order to hold such a tank on the ground, for example, a concrete member embedded in the ground and a member bonded to the peripheral wall of the tank are connected with a cable to fix the tank to the ground. Techniques to do this have been proposed.

JP2013-107659A

  By the way, when the tank is fixed to the ground as in Patent Document 1, when a tsunami or the like occurs and seawater flows around the tank, the side surface of the tank receives a force in the direction in which the seawater flows. May buckle. In order to prevent such deformation, it has been studied to allow horizontal movement for a predetermined distance without fixing the tank to the ground.

  Further, when the tank is fixed with respect to the ground, when a tsunami occurs and seawater flows around the tank, the tank receives buoyancy from the seawater and tends to float upward. When the water level (flooding height) from the ground is high, a large buoyancy acts on the tank. For this reason, in a structure like patent document 1, there exists a possibility that the cable which fixes a tank, and the site | part which connects this may be destroyed. Further, the tank may be deformed such as buckling or bulging.

  For this reason, the large tank as described above may be placed on the ground without being fixed to the ground. For tanks that are not equipped with tsunami countermeasures, the tank is washed away and drifted when a tsunami occurs by controlling the movement of the parts, etc., attached to the tank and moving it against the ground. There is a desire to prevent it.

  The embodiment of the present invention has been made in view of the above circumstances, and even when buoyancy acts on a tank due to a tsunami or the like, the tank drifts while suppressing deformation of the tank. It is an object of the present invention to provide a tank holding device and a fixed structure that can prevent the above-described problem.

In order to achieve the above object, a tank holding device according to an embodiment of the present invention includes a tank side member attached to a tank placed on the ground, a ground side member in contact with the ground, the tank side member, and the ground. A locking member that is provided between the side members and that allows the tank to move in the vertical direction by a predetermined distance and holds the tank, and the tank holding device includes a tank side member attached to the tank. The tank side member includes a circumferential portion extending in the circumferential direction of the tank along the side surface of the tank, and an axial direction extending in the axial direction of the tank along the side surface from the circumferential portion. And a radial portion extending radially inward along the top surface of the tank from the vertical upper end portion of the axial direction portion .

Further, the fixed structure of the embodiment of the present invention includes a tank placed on the ground, a tank holding device that holds the tank while allowing the tank to move in the vertical direction with respect to the ground by a predetermined distance, The tank holding device includes a tank side member attached to the tank, and the tank side member extends in a circumferential direction of the tank along a side surface of the tank, and the circumferential direction. An axial portion extending in the axial direction of the tank along the side surface from the portion, and a radial portion extending along the top surface of the tank from the vertical upper end portion of the axial portion. It is characterized by having .

  According to the embodiment of the present invention, even when seawater flows around the tank, the pressure of the seawater acting on the tank is reduced, and the tank is prevented from drifting while suppressing deformation of the tank. be able to.

It is a perspective view of the fixed structure of a 1st embodiment, and is a perspective view showing the state where the tank holding device was attached to the tank. It is a section elevation of the tank holding device of a 1st embodiment. It is a schematic diagram which shows the damper which comprises the expansion | extension part of 1st Embodiment. It is a mimetic diagram showing the modification of the damper of the tank holding device of a 1st embodiment. It is a perspective view which shows the modification of the tank side member of the tank holding | maintenance apparatus of 1st Embodiment. It is a perspective view which shows the modification of the expansion | extension part of the tank holding | maintenance apparatus of 1st Embodiment. It is a perspective view which shows the modification of the ground side member of the tank holding | maintenance apparatus of 1st Embodiment. It is a perspective view of the fixed structure of 2nd Embodiment, and is a perspective view which shows the state in which the tank holding | maintenance apparatus was attached to the tank. It is a perspective view which shows the modification of the tank holding | maintenance apparatus of 2nd Embodiment, and is a figure which shows the aspect by which a part of ground side member was embed | buried under the columnar fixed structure. It is a perspective view which shows the modification of the tank holding | maintenance apparatus of 2nd Embodiment, and is a figure which shows the aspect which connected the tank side member and the ground side member using the wire. It is a section elevation showing the composition of the tank holding device of a 3rd embodiment. It is a perspective view which shows the modification of the tank side member of 3rd Embodiment. It is a section elevation showing the composition of the tank holding device of a 4th embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below, and various modifications can be made without departing from the scope of the invention.

[First Embodiment]
The configuration of the tank holding device according to the first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of a fixed structure according to the present embodiment, and is a perspective view showing a state in which a tank holding device is attached to a tank. FIG. 2 is a sectional elevation view of the tank holding device of the present embodiment. FIG. 3 is a schematic diagram showing a damper that constitutes the extending portion of the present embodiment. FIG. 4 is a schematic view showing a modified example of the damper of the tank holding device of the present embodiment.

  FIG. 5 is a perspective view showing a modification of the tank side member of the tank holding device of the present embodiment. FIG. 6 is a perspective view showing a modified example of the extending portion of the tank holding device of the present embodiment. FIG. 7 is a perspective view showing a modification of the ground side member of the tank holding device of the present embodiment. In each figure, the vertical upper side is indicated by an arrow U, and the vertical lower side is indicated by an arrow D. The horizontal direction is indicated by an arrow H.

  As shown in FIGS. 1 and 2, the fixed structure 1 of this embodiment includes a tank 10 placed on the ground 3 and a device that holds the tank 10 with respect to the ground 3 (hereinafter referred to as a tank holding device). ) 20. The tank holding device 20 is configured to allow the tank 10 to move vertically upward and to move the tank 10 in the horizontal direction by a predetermined distance.

  The tank 10 is a so-called outdoor tank provided outdoors, and is placed on the ground 3. The tank 10 has a substantially columnar shape, and its columnar axis (shown by a one-dot chain line A in the figure) is disposed on the ground 3 so as to extend in the vertical direction. In the following description, the direction in which the axis A of the tank 10 extends is simply referred to as “axial direction”, the radial direction of the tank 10 is simply referred to as “radial direction”, and the circumferential direction of the tank 10 is It is simply referred to as “circumferential direction”.

  Moreover, the wall body which comprises the radial direction outer side among the wall bodies which comprise the exterior of the tank 10 is described as a "side surface" below, and the code | symbol 12 is attached | subjected. Further, a surface “bottom surface” constituting the lower side in the vertical direction among the surfaces constituting the exterior of the tank 10 is denoted by reference numeral 14. Further, among the surfaces forming the exterior of the tank 10, the surface constituting the upper side in the vertical direction is referred to as a “top surface” and denoted by reference numeral 16. In the present embodiment, the bottom surface 14 of the tank 10 is in contact with the ground 3.

  The tank 10 is a tank for storing a liquid such as petroleum, and stores a stored item therein. A space 11 is formed between the bottom surface 14 and the top surface 16 in the horizontal direction from the side surface 12 of the tank 10, and stores stored items. The stored item may be gas or powder.

  The tank 10 is connected to a pipe 90 for taking stored items into and out of the space 11. In the present embodiment, the pipe 90 has a bellows shape (bellows shape) and is made of metal. The pipe 90 has flexibility and is configured to be stretchable. The pipe 90 is connected to the side surface 12 of the tank 10, and is configured to be able to feed stored items to the space 11 in the tank 10. The pipe 90 can be deformed such as expansion and contraction and bending according to the movement of the tank 10.

  In the present embodiment, the pipe 90 connected to the tank 10 has a bellows shape and is made of metal, but the mode of the pipe connected to the tank 10 is limited to this. is not. The pipe connected to the tank 10 may be mainly composed of an elastomer such as a rubber hose.

  A tank holding device 20 is attached to the tank 10 thus configured to prevent drifting. The tank holding device 20 is configured to allow the tank 10 placed on the ground 3 to move vertically upward by a predetermined distance, and will be described in detail below.

  The tank holding device 20 includes a member (hereinafter referred to as a tank side member) 30 attached to the tank 10, a member in contact with the ground 3 (hereinafter referred to as a ground side member) 40, a tank side member 30, and a ground side member. 40 and a portion (hereinafter, referred to as an extending portion) 50 configured to be extendable and contractible. In the present embodiment, the extending portion 50 constitutes a locking member provided between the tank side member 30 and the ground side member 40. The locking member is a member that is provided between the tank side member 30 and the ground side member 40 and holds the tank 10 while allowing the tank 10 to move vertically upward by a predetermined distance.

  The tank-side member 30 includes a portion (hereinafter referred to as a circumferential portion) 32 that extends in the circumferential direction along the side surface 12 of the tank 10, and a portion that extends in the axial direction along the side surface 12 from the circumferential portion 32. (Hereinafter referred to as an axial portion) 34 and a portion (hereinafter referred to as a radial portion) 36 extending along the top surface 16 from the end 34a on the vertical upper side of the axial portion 34. Yes. Further, the tank side member 30 is configured such that a portion (hereinafter referred to as a protruding portion) 33 protruding radially outward from the circumferential portion 32 is engageable with the extending portion 50.

  In the present embodiment, the tank side member 30 is not coupled to the tank 10, and is configured so that the circumferential direction portion 32 and the axial direction portion 34 are in contact with the side surface 12 of the tank 10. The radial direction portion 36 is provided to prevent the tank 10 from moving relative to the tank side member 30 in the vertical upper direction. In this embodiment, the radial direction part 36 is comprised so that the edge part 16a may be hold | suppressed among the top faces 16, and it is comprised as what is called a "nail | claw."

  As shown in FIG. 2, the ground side member 40 is configured as a so-called anchor, and is fixed to the ground 3 by embedding a vertically lower end 41 in the ground. The end 41 embedded in the ground of the ground side member 40 is referred to as an embedded end 41 in the following description. The ground side member 40 is configured as a so-called anchor. In the ground side member 40, an end portion (hereinafter referred to as an engagement end portion) 43 with which the extension portion 50 is engaged is provided vertically above the ground 3. The engagement end portion 43 is an extension portion. 50 can be engaged.

  The extending portion 50 has a substantially columnar shape, the upper end portion 51 is engaged with the protruding portion 33 of the tank side member 30, and the lower end portion 52 is the engaging end portion 43 of the ground side member 40. Is engaged. The upper end 51 is configured to be rotatable with respect to the protrusion 33. Similarly, the lower end portion 52 is configured to be rotatable with respect to the engagement end portion 43.

  The extending portion 50 is configured such that the distance between the upper end portion 51 and the lower end portion 52 changes. In the present embodiment, a damper 55 is provided between the upper end 51 and the lower end 52 to generate resistance against the extension or contraction of the extension 50.

  For example, as shown in FIG. 3, the damper 55 is disposed inside the outer cylinder 56 in which a viscous fluid is sealed, and is arranged inside the outer cylinder 56 so as to be movable relative to the outer cylinder 56. And a piston 58 that receives resistance from the viscous fluid when moving relative to the outer cylinder 56. The piston 58 is coupled to the upper end 51 via a piston rod 59. On the other hand, the outer cylinder 56 is coupled to the lower end 52.

  When the extension 50 extends, that is, when the upper end 51 and the lower end 52 are separated from each other, the piston 58 of the damper 55 has a resistance opposite to the direction in which the upper end 51 and the lower end 52 are separated from each other. From a viscous fluid. On the other hand, when the extension 50 contracts, that is, when the upper end 51 and the lower end 52 are close to each other, the piston 58 of the damper 55 is opposite to the direction in which the upper end 51 and the lower end 52 are close to each other. Directional resistance is received from the viscous fluid. In this way, the damper 55 causes resistance against the extension or expansion / contraction of the extension part 50.

  The tank holding device 20 is composed of the tank side member 30, the ground side member 40, and the extending portion 50 described above. As shown in FIG. 1, in the tank holding device 20, a plurality of the axial portion 34, the radial portion 36, and the protruding portion 33 of the tank side member 30 are arranged at predetermined intervals in the circumferential direction of the tank 10. . A plurality of the ground-side members 40 are arranged on the ground 3 so as to face the protrusions 33 of the tank-side member 30 outside the tank 10 in the horizontal direction. The tank-side member 30 and the ground-side member 40 facing each other are connected via the extending portion 50.

  When the seawater flows into the periphery of the tank 10 due to a tsunami or the like and buoyancy acts on the tank 10, the fixed structure 1 configured in this way moves the tank 10 vertically upward as indicated by an arrow D in the figure. To do. As the tank 10 moves vertically upward, the protruding portion 33 of the tank side member 30 and the engagement end portion 43 of the ground side member 40 are separated from each other, and the extending portion 50 extends.

  In this way, the tank holding device 20 allows the vertical movement of the tank 10 placed on the ground 3 by a predetermined distance. Thereby, compared with the case where the tank 10 is fixed to the ground 3, the pressure of the seawater acting on the tank 10 can be reduced by the amount of movement of the tank 10 in the vertical direction. Can be prevented from being deformed. When the extending portion 50 is fully extended, that is, “extends”, the movement of the tank 10 further upward is restricted.

  The resistance in the direction opposite to the direction in which the extension part 50 extends is between the damper 55 and the extension part 50 from when the extension part 50 starts to extend after the buoyancy acts on the tank 10. Caused by. This resistance can suppress the speed at which the extending portion 50 extends. Thereby, when the expansion | extension part 50 expand | extends completely, it can suppress that a shocking force acts between the tank 10 and the tank side member 30, and the tank 10 deform | transforms.

  In addition, in the tank holding device 20 of the present embodiment described above, the damper 55 included in the extending part 50 moves relatively between the outer cylinder 56 in which the viscous fluid is sealed and the inner side of the outer cylinder 56, However, the damper according to the present invention is not limited to this mode.

  For example, the damper 55 shown in FIG. 3 may include a viscous substance (solid particles) sealed inside the outer cylinder 56 instead of the viscous fluid, and the piston 58 may be a viscous damper that receives resistance from the solid particles. good.

  Further, as shown in FIG. 4, the damper according to the present invention may be a so-called elasto-plastic damper 55C that generates resistance against expansion or contraction by plastic deformation in addition to elastic deformation. . The elastic-plastic damper 55C is made of a metal having a lower yield point than the tank-side member 30 and the ground-side member 40, and when the distance between the upper end 51 and the lower end 52 changes by a predetermined distance, That is, when the elongated portion 50 is elongated by a predetermined distance, resistance against elongation is generated by plastic deformation in addition to elastic deformation. Even if comprised in this way, the damper which produces the resistance which resists expansion | extension of the expansion | extension part 50 is realizable.

  Further, in the above-described embodiment, in the tank holding device 20, the radial direction portion 36 of the tank side member 30 is configured to press the edge 16 a of the top surface 16 of the tank 10. However, the aspect of the tank side member according to the present invention is not limited to this.

  For example, like the tank holding device 21 of the modification shown in FIG. 5, the radial direction portion 36 </ b> B of the tank side member 30 </ b> B may extend over the entire radial direction of the top surface 16. The area of the top surface 16 in contact with the radial portion 36B can be increased, and deformation of the top surface 16 when buoyancy is applied to the tank 10 can be suppressed.

  In the above-described embodiment, the protruding portion 33 of the tank side member 30 is connected to the ground side member 40 via the extending portion 50. However, the aspect of the tank side member 30 is limited to this. It is not a thing.

  For example, when a plurality of tanks 10 are provided adjacent to each other like the tank holding device 22 of the modified example shown in FIG. 6, the extending portion 50B may connect the tank side members 30 facing each other. good. In this example, the first end portion 51B of the extending portion 50B is engaged with the protruding portion 33 of the tank side member 30 of one tank 10, and the second end portion 52B is the tank side of the other tank 10B. The protrusions 33B of the member 30B are engaged. By comprising in this way, when the buoyancy acts on the tank 10 and the tank 10B and each moves vertically upward, it can prevent that one tank 10 and the other tank 10B contact.

  7, the ground-side member 40B extends along the ground 3 in place of the above-described embedded end 41, and a grounding end 44 in contact with the ground 3 is used. It is good also as what has. The ground contact end portion 44 has a function as a weight (weight), and even when the buoyancy acts on the tank 10 and moves vertically upward, the extension portion 50 extends to the ground 3. Continue contact. According to the tank holding device 23, the horizontal movement of the tank with respect to the ground 3 can be restricted by friction between the ground contact end 44 and the ground 3 depending on the mode.

[Second Embodiment]
A tank holding device according to a second embodiment will be described with reference to FIGS. FIG. 8 is a perspective view of the fixed structure of the present embodiment, and is a perspective view showing a state where the tank holding device is attached to the tank. FIG. 9 is a perspective view showing a modified example of the tank holding device of the present embodiment, and shows a state in which a part of the ground side member is embedded in a columnar fixed structure. FIG. 10 is a perspective view showing a modification of the tank holding device of the present embodiment, and is a view showing a mode in which the tank side member and the ground side member are connected using a wire.

  In the tank holding device of the present embodiment, the tank side member is different from the first embodiment in that it does not have an axial portion and a radial portion. In addition, about the structure substantially common with 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 8, the tank-side member 30 </ b> C of the present embodiment has a portion (hereinafter referred to as a circumferential portion) 32 </ b> C extending in the circumferential direction along the side surface 12 of the tank 10, and a diameter from the circumferential portion 32 </ b> C. It has a portion (hereinafter referred to as a protruding portion) 33 protruding outward in the direction. The protruding portion 33 is engaged with the upper end portion 51 of the extending portion 50. In the tank side member 30C of the present embodiment, the axial direction portion 34 and the radial direction portion 36 are not provided as in the first embodiment.

  In the tank holding device 24 of this embodiment, the circumferential portion 32C of the tank side member 30C is coupled to the side surface 12 of the tank 10 by welding or the like. That is, the tank side member 30 </ b> C is fixed to the tank 10. Also according to this aspect, when buoyancy is applied to the tank 10, the tank-side member 30 </ b> C moves vertically upward integrally with the tank 10. According to this aspect, it is not necessary to provide the axial direction part 34 and the radial direction part 36 like the tank side member 30 of 1st Embodiment. The tank holding device 24 of the present embodiment is suitable when a tank 10 is newly installed.

  In the present embodiment, the circumferential portion 32C of the tank side member 30C is joined to the side surface 12 of the tank 10 by welding or the like, but the circumferential portion 32C and the side surface 12 of the tank are not joined. Also good. In this case, the tank 10 can move further vertically upward relative to the circumferential portion 32C of the tank side member 30C.

  Even when the extending portion 50 is fully extended, the tank 10 can move in the vertical direction according to the water level of the seawater, and the pressure acting on the tank 10 can be suppressed. In addition, since the movement of the tank 10 in the horizontal direction is restricted by the radial portion 32C of the tank side member 30C, the tank 10 can be prevented from drifting even in the tank holding device 24 of this aspect.

  In the embodiment described above, the plurality of ground-side members 40 are fixed to the ground 3 by the embedded end 41 being embedded in the ground. The aspect which fixes the side member 40 with respect to the ground 3 is not limited to this.

  For example, as in the tank holding device 25 of the modified example shown in FIG. 9, at least a part of the plurality of ground side members 40 is embedded in the columnar fixed structure 6 extending vertically upward from the ground 3. It is good also as what is fixed with respect to the ground 3 by being embedded.

  In the above-described embodiment, the extending portion 50 includes the damper 55 that generates resistance against the expansion or contraction. However, the aspect of the extending portion according to the present invention is limited to this. It is not something. The extending portion according to the present invention only needs to be configured to be extendable between the upper end 51 that engages with the tank-side member 30 and the lower end 52 that engages with the ground-side member 40.

  For example, like the tank holding device 26 of the modification shown in FIG. 10, the tank side member 30C and the ground side member 40 may be connected by a wire (rope) 50C. The upper end portion 51 of the wire 50 </ b> C is engaged with the protruding portion 33 of the tank side member 30, and the lower end portion 52 is engaged with the engagement end portion 43 of the ground side member 40. When the tank 10 is in contact with the ground 3, the wire 50 </ b> C is attached to bend between the tank side member 30 </ b> C and the ground side member 40. In this modification, the wire 50C constitutes a locking member provided between the tank side member 30C and the ground side member 40. By attaching the wire 50C in this manner, when buoyancy is applied to the tank 10, the tank 10 can be moved vertically upward by a predetermined distance. It is also preferable that the wire 50 is configured to be extendable by a predetermined distance to form the above-described extension portion.

[Third Embodiment]
A configuration of a tank holding device according to the third embodiment will be described with reference to FIGS. 11 and 12. FIG. 11 is a sectional elevation view showing the configuration of the tank holding device of the present embodiment. FIG. 12 is a perspective view showing a modification of the tank side member of the present embodiment.

  The tank holding device of this embodiment is replaced with the expansion | extension part (refer FIG. 2) of 1st Embodiment, the slide mechanism which engages a tank side member so that a vertical direction is slidable, a slide mechanism, a ground side member, It differs from 1st Embodiment by the point which has the connection member which connects these. In addition, about the structure substantially common to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In addition to the ground side member 40 and the tank side member 30E, the tank holding device 27 of the present embodiment includes a mechanism (hereinafter referred to as a slide mechanism) 60 that supports the tank side member 30E so as to be slidable in the vertical direction, A member (hereinafter referred to as a connecting member) 70 for connecting the member 40 and the slide mechanism 60 is provided. The connection member 70 is configured as a rigid body having a rod shape. In the present embodiment, the slide mechanism 60 and the connection member 70 constitute a locking member provided between the tank side member 30 and the ground side member 40.

  The tank side member 30E of the present embodiment extends in the vertical direction of the tank 10 and has a rail 38 that contacts a rolling element 66 described later. In this embodiment. The rail 38 is coupled to the axial direction portion 34, the circumferential direction portion 32, and the radial direction portion 36. When the buoyancy acts on the tank 10 and moves vertically upward, it moves together with the tank 10 vertically upward.

  The slide mechanism 60 includes a rolling element 66 that contacts the rail 38, a support part 64 that rotatably supports the plurality of rolling elements 66, and an engagement end that protrudes outward in the horizontal direction from the support part 64 and engages with the connection member 70. Part 61. The engagement end portion 61 and the support portion 64 are integrally coupled.

  When the rail 38 moves vertically upward with respect to the engagement end portion 61 and the support portion 64, the rolling element 66 rotates. In the present embodiment, a stopper 38e capable of coming into contact with the rolling element 66 is provided at the vertically lower end of the rail 38. When the rail 38 moves relatively vertically upward by a predetermined distance, the movement is restricted by the rolling element 66 coming into contact with the stopper 38e.

  In the connection member 70, the upper end 71 is engaged with the engagement end 61 of the slide mechanism 60, and the lower end 72 is engaged with the engagement end 43 of the ground side member 40. . The connection member 70 is configured to be rotatable with respect to the ground side member 40. In addition, the slide mechanism 60 is configured to be rotatable with respect to the connection member 70.

  In the tank holding device 27 configured as described above, when the tank 10 receives buoyancy and moves vertically upward together with the tank side member 30E, the slide mechanism 60 allows the movement. When the rolling element 66 rotates in the slide mechanism 60, the tank side member 30E including the rail 38 in contact with the rolling element 66 and the tank 10 can smoothly move vertically upward. When the tank 10 and the tank-side member 30E move vertically upward by a predetermined distance, the rolling element 66 comes into contact with the stopper 38e of the rail 38, and the movement upward in the vertical direction is restricted.

  On the other hand, the movement of the tank 10 in the horizontal direction is allowed for a predetermined distance by the rotation of the connection member 70 with respect to the ground side member 40 and the rotation of the slide mechanism 60 with respect to the connection member 70. When the tank 10 or the tank side member 30E comes into contact with the ground side member 40 or the connection member 70, the horizontal movement of the tank 10 is limited.

  As described above, the tank holding device 27 of the present embodiment vertically moves the tank side member 30E attached to the tank 10, the ground side member 40 that is a member fixed to the ground 3, and the tank side member 30E. And a slide mechanism 60 that is slidably supported in the direction.

  Furthermore, the tank holding device 27 has an upper end 71 that engages with the slide mechanism 60 and a lower end 72 that engages with the ground side member 40, and connects the slide mechanism 60 and the ground side member 40. And a connecting member 70 that is a rigid body. According to this aspect, it is possible to realize a mechanism for holding the tank 10 while allowing the tank 10 to move in the vertical direction by a predetermined distance.

  In the tank holding device 27 of the present embodiment, the rail 38 of the tank side member 30E is connected to the axial direction portion 34, but the peripheral structure of the rail 38 is not limited to this mode. Absent. For example, like the tank side member 30F of the modification shown in FIG. 12, a lower part 32a extending in the circumferential direction on the vertical lower side, an upper part 32c extending in the circumferential direction on the vertical upper side, and an upper part 32c And a connection portion 32e that connects the lower portion 32a.

  The tank side member 30 </ b> F is coupled to the side surface 12 of the tank 10. The rail 38 (see FIG. 11) is coupled to the connection portion 32e. According to this aspect, the tank-side member 30 </ b> F can reinforce the side surface 12 and suppress deformation such as buckling of the tank 10.

[Fourth Embodiment]
The configuration of the tank holding device according to the fourth embodiment will be described with reference to FIG. FIG. 13 is a sectional elevation view showing the configuration of the tank holding device of the present embodiment. The tank holding device of this embodiment is different from that of the first embodiment in that a seismic isolation structure is provided between the tank and the ground. In addition, about the structure substantially common to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 13, in the tank holding device 28 of this embodiment, in addition to the tank side member 30, the ground side member 40, and the extending portion 50, it is possible to suppress the vibration of the ground 3 from being transmitted to the tank 10. A simple structure (hereinafter referred to as a seismic isolation structure) 80 is provided. The seismic isolation structure 80 has a disk shape, and is provided across the entire bottom surface 14 between the bottom surface 14 of the tank 10 and the ground 3. In the present embodiment, the seismic isolation structure 80 is configured by laminating a plurality of disc-shaped rubbers extending in the horizontal direction in the vertical direction.

  In the present embodiment, an engagement member 18 that restricts horizontal movement of the tank 10 with respect to the seismic isolation structure 80 is provided. The engaging member 18 is coupled to the side surface 12 of the tank 10 and engages with the side surface 81 of the seismic isolation structure 80. When an earthquake roll occurs, the tank 10 is prevented from moving outward in the horizontal direction with respect to the seismic isolation structure 80.

  The tank 10 is placed on the seismic isolation structure 80 configured as described above. According to such a tank holding device 28, when an earthquake or the like occurs, vibration of the ground 3, for example, horizontal vibration (rolling) can be suppressed from being transmitted to the tank 10.

  In the present embodiment, the tank 10 is placed on the ground 3 with the seismic isolation structure 80 interposed therebetween, but the peripheral structure of the seismic isolation structure 80 is not limited to this mode. . The seismic isolation structure 80 may be coupled to the ground 3 before the tank 10 is placed. The seismic isolation structure 80 may be coupled to the bottom surface 14 of the tank 10.

[Other Embodiments]
In addition to the embodiment described above, various modifications can be made to the tank 10 and the tank holding devices 20 to 28.

  For example, in the above-described embodiment, the tank 10 has a cylindrical shape, but the form of the tank according to the present invention is not limited to this. The tank holding device according to the present invention can be applied to various types of tanks such as a rectangular parallelepiped tank and a spherical tank.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Fixed structure 10, 10B Tank 12 Side surface 14 Bottom surface 16 Top surface 18 Engagement member 20, 21, 22, 23, 24, 25, 26, 27, 28 Tank holding device 30, 30B, 30C, 30E, 30F Tank side Member 32a Lower part 32c Upper part 32e Connection part 32, 32C, 32E Circumferential part 33, 33B Protruding part 34 Axial part 36, 36B Radial part 38 Rail 38e Stopper 40, 40B Ground side member 41 Embedded end part 43 Engagement Joint end 44 Grounding end 50, 50B Tank holding device extension 50C Wire 51 Upper end 52 Lower end 55 Damper 55C Elasto-plastic damper (damper)
56 Outer cylinder 58 Piston 59 Piston rod 60 Slide mechanism 61 Engagement end part 64 Support part 66 Rolling body 70 Connection member 71 Upper end part 72 Lower end part 80 Seismic isolation structure (elastomer)
90 piping

Claims (11)

A tank side member attached to a tank placed on the ground;
A ground side member in contact with the ground;
A locking member provided between the tank-side member and the ground-side member, allowing the tank to move vertically upward by a predetermined distance, and holding the tank;
Equipped with a,
The tank side member is
A circumferential portion extending in a circumferential direction of the tank along a side surface of the tank;
An axial portion extending in the axial direction of the tank along the side surface from the circumferential portion,
A radial portion extending radially inward along the top surface of the tank from the vertical upper end of the axial portion;
Tank holding apparatus characterized by having a. The tank side member is not coupled with the tank,
The circumferential portion and the axial portion are configured to contact the side surface,
The tank holding device according to claim 1, wherein the radial portion restricts relative movement of the tank in the vertical upper direction with respect to the tank side member . The locking member is
It has an upper end that engages with the tank side member and a lower end that engages with the ground side member, and is configured to be extendable between the upper end and the lower end. An extension,
The tank holding device according to claim 1 , further comprising: The extension portion is made of a metal having a lower yield point than the tank side member and the ground side member, and an elastic- plastic damper that generates resistance against extension by plastic deformation in addition to elastic deformation. The tank holding device according to claim 3 , wherein the tank holding device is provided. It said extension portion includes an upper end portion is engaged with the circumferential portion, according to claim 3 or claim 4, characterized in that it is arranged at predetermined intervals in the circumferential direction of the tank Tank holding device. The locking member is
A slide mechanism for supporting the tank side member so as to be slidable in the vertical direction;
A connecting member that has an upper end engaged with the slide mechanism and a lower end engaged with the ground side member, and is a rigid body that connects the slide mechanism and the ground side member;
The tank holding device according to claim 1, further comprising: The locking member has an upper end that engages with the tank side member and a lower end that engages with the ground side member, and a wire that connects the tank side member and the ground side member. And more,
The tank holding device according to claim 1, wherein the wire is attached so as to bend between the tank side member and the ground side member when the tank is in contact with the ground. Between the tank and the ground, any one of claims 1 to 7, characterized in that seismic isolation structure capable of suppressing the vibration of the ground is transmitted to the tank is provided The tank holding device according to item. 2. The tank according to claim 1, wherein the tank has flexibility and is configured to be extendable and contractable, and a pipe capable of feeding stored items is connected to a space in the tank. The tank holding device according to claim 8 . A tank placed on the ground,
A tank holding device for holding the tank while allowing the tank to move in the vertical direction with respect to the ground by a predetermined distance;
Equipped with a,
The tank holding device includes a tank side member attached to the tank,
The tank side member
A circumferential portion extending in a circumferential direction of the tank along a side surface of the tank;
An axial portion extending in the axial direction of the tank along the side surface from the circumferential portion,
A radial portion extending radially inward along the top surface of the tank from the vertical upper end of the axial portion;
The fixed structure, characterized in that it comprises a. The tank side member is not coupled with the tank,
The circumferential portion and the axial portion are configured to contact the side surface,
The fixed structure according to claim 10, wherein the radial portion restricts relative movement of the tank in the vertical upper direction with respect to the tank side member .

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