JP2018135121A - Tank auxiliary equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide tank auxiliary equipment capable of preventing collapse and flowing out of a tank and capable of preventing damage to the tank against tsunami.SOLUTION: The tank auxiliary equipment includes: a float 2 for supporting a tank T, and for floating the tank T when tsunami attacks; and a plurality of support pillars 3 disposed at an equal interval in a circumferential direction on the periphery of the tank T, and for guiding the floating of the tank T. The float 2 has buoyancy for floating the tank T so as to be located on a water surface S.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a tank incidental facility provided as a tsunami countermeasure for a tank that stores liquids or gases such as crude oil, petrochemical products, industrial water, drinking water, compressed gas, and liquefied gas.

Conventionally, a tank tsunami countermeasure structure applied to a cylindrical tank standing on the ground is known as an incidental facility for this type of tank (see Patent Document 1).
This tank tsunami countermeasure structure includes a plurality (eight) of steel pipe piles provided around the tank and a plurality of annular members fixed inside the plurality of steel pipe piles. The plurality of steel pipe piles are arranged in an annular shape equally in the circumferential direction, the lower end thereof is driven into the ground, and the upper end is higher than the sum of the tsunami height h1 and the tank height h2. Arranged above. The plurality of annular members are formed in an annular shape with a resin or the like, and are fixed at appropriate intervals in the vertical direction inside the plurality of steel pipe piles. A gap of about 10 cm is provided between the plurality of annular members and the tank, and the tank can be inserted into the plurality of annular members.
In this tsunami countermeasure structure, even if a tsunami occurs and the tank rises due to buoyancy due to tsunami inundation or horizontal wave force, the steel pipe piles and multiple annular members arranged around the tank prevent the tank from falling or drifting. Is prevented.

Japanese Patent Laying-Open No. 2015-174585

In such a conventional tank tsunami countermeasure structure, the steel pipe pile or the like prevents the tank from overturning and drifting, but it cannot prevent damage to the tank due to drifting material (rubble). The tsunami strikes several times, accompanied by drifting objects. In this case, the tank will be damaged if the drifting object that hits the tsunami flow collides with the tank.
That is, in the conventional tsunami countermeasure structure, the tank resists the flow of the tsunami due to the steel pipe pile or the like, so that it may be easily damaged by the drifting material that flows.

  It is an object of the present invention to provide a tank incidental facility that can prevent a tank from collapsing or flowing out against a tsunami, and can effectively prevent damage to the tank due to drifting objects.

  The tank ancillary equipment of the present invention supports the tank, and floats that float the tank against the tsunami attack, and a plurality of guides that are arranged at equal intervals in the circumferential direction around the tank and guide the tank rising. The float has a buoyancy that allows the tank to float so that the tank is positioned on the water surface.

  According to this configuration, when the tsunami strikes and the water level rises, the tank floats with the floats as a guide by the float. For this reason, it is possible to prevent the tank from falling or flowing out. Further, since the float has a buoyancy that allows the tank to float so as to be positioned on the water surface, the floated tank is always positioned on the water surface. For this reason, the drifting object (rubble) that comes in contact with the tsunami flow does not collide with the tank itself, and the tank damage due to the drifting object can be effectively prevented. Therefore, it is possible to prevent the stored matter in the tank from flowing out due to damage to the tank caused by the tsunami. This configuration is based on the assumption of a relatively large tsunami, but it can also handle flood damage such as small tsunamis, storm surges, and floods.

  In this case, the float has a gantry part that directly supports the tank at the upper part. The gantry part extends from the gantry part body located on the lower side of the tank and the gantry part body, and can be slid vertically with respect to each column. It is preferable to have a plurality of guide engaging portions that engage with.

  According to this configuration, the tank is directly supported by the gantry, and the rising of the tank is guided by the plurality of guide engaging portions that engage with the plurality of support columns. For this reason, the tank rises (floats) stably while maintaining its posture (without tilting), and descends stably. Therefore, even if the tsunami strikes several times, it is possible to suppress the extreme swell of the storage in the tank (in a floating roof tank, the storage is prevented from overflowing). In addition, after the tsunami leaves, the tank can be returned to the original installation position.

  In this case, each guide engaging portion has a ring-shaped engaging portion main body that surrounds the support column, and a ring holding portion that extends from the gantry main body and holds the engaging portion main body. It is preferable that the anti-vibration member is used.

  According to this configuration, the roll of the tank due to the earthquake motion or tsunami is absorbed by the engaging portion main body formed of the vibration isolating member. For this reason, the damage of the tank by a roll and the big wave of a store thing can be suppressed.

  In addition, a plurality of support blocks for supporting the gantry part via each guide engaging part may be further provided, and each support block may be composed of a damping member provided so as to surround each column. preferable.

  According to this configuration, the tank block caused by the earthquake motion or tsunami is absorbed by the support block formed of the damping member. For this reason, the damage of the tank by a pitching and the big wave of a store thing can be suppressed.

  Furthermore, it is preferable to further include an anti-vibration member provided at least in a position corresponding to the support on the upper outer peripheral surface of the tank, and the anti-vibration member is preferably composed of an anti-vibration member.

  According to this configuration, the anti-vibration member formed of the vibration isolating member absorbs the roll of the tank that is rising (floating) and descending, and the tilt is suppressed. For this reason, the posture of the tank is stabilized during ascent and descent, and damage to the tank and large ripples of stored items can be suppressed.

  On the other hand, it is preferable to further include a connecting ring that is provided at the upper ends of the plurality of support columns and guides the rising of the tank and connects the plurality of support columns in an annular shape.

  According to this structure, since the upper end part of a some support | pillar is connected by a connection ring, a some support | pillar can be mutually reinforced and positioned. Therefore, the tank can be stably lifted (and lowered).

  Further, the float has a plurality of float chambers partitioned by an outer shell and a partition plate, and a plurality of partial floats accommodated in each float chamber, and each partial float is composed of an independent foam. Is preferred.

  According to this configuration, the float can be constructed relatively easily, and even if the float is submerged, its buoyancy is not reduced. Moreover, even if the float is damaged due to the collision of the drifting object, the buoyancy is not reduced.

  The float preferably further includes a plurality of damping members that support the tank.

  According to this structure, a tank can be made into a vibration suppression structure by a float, and it can suppress that a tank is damaged or a store thing greatly waves by the earthquake motion prior to a tsunami.

  On the other hand, piping connected to external equipment is connected to the tank, and it is interposed in the vicinity of the tank. When the tank rises, the connection status of the piping is released, and the piping is connected to the fixed piping on the external equipment side and the tank. It is preferable to further include a separation mechanism that separates into the moving pipe on the side, and the separation mechanism is operated by the buoyancy of the float.

  According to this configuration, the separation mechanism can release the connection state of the pipes as the tank rises, and can effectively prevent damage around the outflow inlet of the tank during the ascent. Further, since the separation mechanism is operated by the buoyancy of the float, the separation mechanism can be reliably operated even if the power source is lost due to the earthquake motion or the like prior to the tsunami.

  In this case, the separation mechanism is connected to the separation joint composed of the original joint part on the fixed pipe side and the front joint part on the movable pipe side, and the original joint part, which are joined to each other so as to be detachable from each other. An openable / closable main valve, a front valve that is connected to the front joint, and can open and close the moving pipe; and a joint operating mechanism that receives the float buoyancy and separates the main joint and the front joint It is preferable to have a main valve operating mechanism that closes the original valve by receiving the float buoyancy and a front valve operating mechanism that closes the front valve by receiving the float buoyancy.

  According to this configuration, when the tank is floated by the float, it can be separated into the fixed pipe side and the moving pipe side by the joint operating mechanism (the connection state is released), and the main valve operating mechanism and the leading valve operating mechanism can be used. Each of the fixed pipe and the movable pipe can be closed. Therefore, it is possible not only to prevent damage around the outflow inlet of the rising tank, but also to effectively prevent the stored material from flowing out from the separated pipe portion.

  In this case, the former side joint part and the front side joint part are inserted and joined with the vertical direction as the axial direction, and a non-return valve structure that also serves as the original side valve is incorporated in the former side joint part. Is provided with a valve opening member that extends in the axial direction and restricts the valve body of the valve structure to an open position, and the joint operating mechanism and the original valve operating mechanism are movable pipes that move up as the tank floats. It is preferable that it is comprised.

  According to this configuration, when the moving pipe moves upward (moves upward) as the tank rises, the joint state between the original joint portion and the front joint portion is released, and the position of the valve body by the valve opening member Regulations are lifted. As a result, the pipe is appropriately separated at the separation joint, and at the same time, the fixed pipe is closed. Accordingly, it is possible to prevent damage around the outflow inlet of the tank and to prevent the stored material from flowing out from the fixed pipe.

  The front valve is slidable in the horizontal direction between the check valve portion, a restriction position for restricting the valve body of the check valve portion to the open position, and a restriction release position for allowing the valve body to be closed. And a release urging member that urges the valve opening / closing member at the restriction position toward the restriction release position, and the leading valve operating mechanism moves upward as the tank rises. A fixed-side engaging member that is fixedly attached to the moving piping that moves upward, engages with the valve opening and closing member in the open position, and releases the engagement with the upward movement of the moving piping; It is preferable to have.

  According to this configuration, when the moving pipe moves upward as the tank floats, the engagement between the fixed side engaging member and the valve opening / closing member is released. The valve opening / closing member is slid to the restriction release position by the urging force of the release urging member, and the valve body of the check valve portion is allowed to close. For this reason, moving piping is obstruct | occluded and the outflow of the stored matter from moving piping can be prevented.

  Moreover, the former side joint part and the front side joint part are inserted and joined with the vertical direction being the axial direction, and the separation joint is in a downward movement position and unlocking to lock the joining state between the former side joint part and the front side joint part. And a lock member provided so as to be movable up and down with respect to the front joint portion, and the joint operating mechanism moves up as the tank rises and moves the lock member downward. It is preferable to have a lock release member that moves upward from the position to the upward movement position.

  According to this configuration, when the tank is lifted, the unlocking member is moved upward, and when the locking member is moved to the upward movement position, the locked state of the locking member is released. Thereby, the joining state of the former side joint part and the front side joint part is released, and the fixed pipe and the movable pipe can be appropriately separated.

  Similarly, the former side joint part and the front side joint part are inserted and joined with the vertical direction as the axial direction, and the separation joint has a hooking position and hooking that locks the joining state between the former side joint part and the front side joint part. A plurality of hooking members that are provided so as to be rotatable with respect to the front side joint portion between the hooking release positions to be released are further provided, and the joint operating mechanism moves upward as the tank floats, It is preferable to have a hooking release member that simultaneously rotates the hooking member from the hooking position to the hooking release position.

  According to this configuration, when the hooking release member moves upward as the tank floats and the plurality of hooking members are simultaneously rotated, the hooking state of the hooking member is released. Thereby, the joining state of the former side joint part and the front side joint part is released, and the fixed pipe and the movable pipe can be appropriately separated.

  In addition, in the original side valve and the front side valve, the support rod for guiding the movement of the valve body between the open position and the closed position is exposed to the outside through the housing, and the valve body in the open position is set in the closed position. Each of which is constituted by a check valve having a closing biasing member biased toward the front, and the former valve actuating mechanism and the leading valve actuating mechanism are engaged with an exposed portion of the support rod in which the valve element is in the open position, It is preferable to have each a rod engaging member which cancels | releases engagement with floating.

  According to this configuration, when the engagement of the rod engaging member with the support rod is released as the tank floats, the closing biasing member moves the valve body to the closing position via the support rod. That is, as the tank floats, the original valve operates to close the fixed pipe, and the front valve operates to close the moving pipe. Thereby, the outflow of the stored matter from the separated fixed pipe and the moving pipe can be prevented.

  Similarly, the former side valve is constituted by a first butterfly valve whose opening / closing operation is performed between an open position of 45 ° downward and a closed position of 45 ° upward. The second butterfly valve is opened and closed between an open position of 45 ° and a closed position of 45 ° downward, and the main valve operating mechanism and the leading valve operating mechanism are connected to the operation lever of the first butterfly valve and the first butterfly valve. Preferably, the connecting member is connected to the operation lever of the second butterfly valve, and the connecting member closes the first butterfly valve and the second butterfly valve as the tank floats, and then breaks.

  According to this configuration, when the fixed pipe and the moving pipe are separated as the tank rises, the connecting member relatively closes the operation lever of the first butterfly valve and simultaneously operates the second butterfly valve. The lever is relatively closed. That is, as the tank rises, the closing operation of the original side valve and the front side valve is simultaneously performed. Thereby, the outflow of the stored matter from the separated fixed pipe and the moving pipe can be prevented.

  On the other hand, a plurality of support mechanisms that support the float at a predetermined height position so that a work space is formed between the base and the base in preference to the float as the float descends after rising. In addition, the plurality of support mechanisms are attached to the float in a dispersed state, and each support mechanism is between a support posture that supports the float and a non-support posture that allows the float to be seated on the base. A mechanism body that can be changed in posture, and a non-return section that allows a posture change from a non-supporting posture to a supporting posture as the float rises, and reverses the support posture so as to maintain the supporting posture when landing on the base. And a non-return release portion for releasing the non-return state of the non-return portion.

  According to this configuration, the non-supporting posture of the mechanism main body is allowed to change from the non-supporting posture to the supporting posture as the float rises, while the non-supporting portion preferentially lands on the base as the float descends. Maintain support posture. For this reason, the float can be supported at a predetermined height position by the plurality of support mechanisms so as to form a work space between the float (and the tank) and the base. As a result, rubble (floating material) and earth and sand remaining on the base can be removed. In addition, it is possible to repair damaged floats and the like. Further, the non-return release unit allows the posture change of the mechanism body from the support posture to the non-support posture. For this reason, a tank and a float can be made to land on a base | substrate like the original after a debris removal operation | work etc. by several support mechanisms. Note that the mechanism main body may have a telescopic structure or a foldable structure.

  In this case, the mechanism body has a basic form of either a hydraulic cylinder or an air cylinder, the check part has a check valve communicating with the bottom cylinder chamber, and the check release part has a bottom cylinder. It is preferable to have an on-off valve communicating with the chamber.

  According to this configuration, the mechanism body is maintained in the extended state by “closing” the check valve and the on-off valve communicating with the bottom cylinder chamber, and then the mechanism body is contracted by “opening” the on-off valve. Can do. That is, it is possible to easily control the maintenance and release of the extended state of the mechanism body. Therefore, the operation of supporting the float at a predetermined height position and the operation of landing the float on the base can be easily performed.

  In this case, it is preferable that the plurality of head-side cylinder chambers in the plurality of support mechanisms communicate with each other by piping, and the on-off valve is provided in the piping.

  According to this structure, the maintenance state cancellation | release of the extended state in a some support mechanism can be performed simultaneously. Therefore, the tank and the float can be landed on the base while maintaining an appropriate posture.

It is a structure figure around the tank including the incidental equipment of the tank concerning a 1st embodiment. FIG. 3 is a structural diagram around a tank including ancillary facilities of the tank in a state where the tank has floated. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is the top view structural view (a) and side view structural view (b) around the guide engaging part 16 which concerns on the modification of 1st Embodiment. FIG. 3A is a side view structure diagram of the entire separation mechanism according to the first embodiment, and FIG. 5B is a top view structure diagram of a front side valve of the separation mechanism. FIG. 6 is a structural diagram of a separation mechanism according to a second embodiment. FIG. 10 is a structural diagram of a separation mechanism according to a third embodiment. It is a structural diagram of the landing leg in the incidental equipment of the tank concerning a 4th embodiment. It is a system figure of the landing leg concerning the modification of a 4th embodiment. It is a system figure of the landing leg in the incidental equipment of the tank concerning a 5th embodiment.

  Hereinafter, a tank incidental facility according to an embodiment of the present invention will be described with reference to the accompanying drawings. This tank incidental equipment (hereinafter simply referred to as “ancillary equipment”) is mainly attached to the tank as a countermeasure against the tsunami of the tank. The tank is actively placed on the surface of the water in accordance with the water level of the tsunami. It is to rise. Further, the incidental equipment of the embodiment can be applied to both existing tanks and new tanks.

[tank]
Target tanks store crude oil, petrochemical products, industrial water, drinking water, compressed gas, liquefied gas, and the like. In addition, the types of tanks include a fixed roof tank, a conical roof tank, a spherical roof tank, a floating roof tank, a floating roof tank with a fixed roof, and a spherical tank. In the following, description will be given by taking a fixed roof tank using kerosene, light oil, heavy oil, etc. as stored items as an example.

[First Embodiment]
FIG. 1 is a structural diagram (elevated view) around a tank including ancillary equipment, and FIG. 2 is a structural diagram (elevated view) around the tank in a state where the tank is floated. As shown in both figures, the incidental equipment 1 supports the tank T, and floats 2 that float the tank T against the tsunami attack, and a plurality of pieces arranged around the tank T (in the embodiment, 4) struts 3. The float 2 also serves as a frame for the tank T, and the tank T is levitated when a tsunami strikes. Further, the four support columns 3 guide the rising of the tank T and prevent the tank T from flowing out.

  A concrete foundation 5 is placed on the ground G, and a float 2 and a tank T are installed on the foundation 5. Although not shown in the drawing, an appropriate ground work is performed on the lower side of the foundation 5 in consideration of the supporting force of the ground G, and the foundation 5 is provided with an oil breakwater or the like. The tank T is supported by the float 2 and four support blocks 7 (details will be described later), and the float 2 and the four support blocks 7 are supported (sitting) on the foundation 5. Although details will be described later, a connection ring 8 that connects the four columns 3 in an annular shape is provided at the upper end of the four columns 3, and an annular bracing member 9 is provided on the upper outer peripheral surface of the tank T. . Further, a separate mechanism 10 is interposed in the pipe P connected to the tank T (details will be described later).

  As shown in FIGS. 1 and 3, the four support columns 3 are arranged at equal intervals in the circumferential direction around the tank T. Each strut 3 is preferably composed of, for example, a steel pile or a ready-made reinforced concrete pile used in the pile land industry, and the embodiment is composed of a steel pipe pile (a kind of steel pile). The lower part of each column 3 penetrates the foundation 5 and is driven deeply into the ground G. The depth at which the support 3 is driven into the ground G is designed in consideration of the strength of the ground G, and the height of the support 3 from the ground G is designed in consideration of the largest possible tsunami height. Has been. Furthermore, the float 2 of the embodiment is designed so that the entire tank T floats at a position higher than the water surface S of the tsunami (see FIG. 2). Therefore, the height of the support column 3 from the ground G exceeds the assumed maximum tsunami height.

  As shown in FIGS. 1 and 5, a connection ring 8 is provided at the upper ends of the four columns 3 to connect them in an annular shape. The connection ring 8 is made of steel or the like, and reinforces and positions the four struts 3 with each other. The four struts 3 are fixed to the ground G at the lower part and are connected at the upper end by the connecting ring 8, so that they can withstand the horizontal wave force of the tsunami that the self and the float 2 receive and guide the ascent of the tank T. The diameter of the inner peripheral surface of the connecting ring 8 is formed to have the same diameter as a virtual circle obtained by connecting the inner ends of the four columns 3 in a circle, and guides the rising of the tank T together with the four columns 3.

  Of course, the connection ring 8 when a tsunami exceeding the expected level functions as a stopper that regulates the floating top position of the tank T, and prevents the tank T from being detached (outflowed) from the column 3. In addition, it is preferable that the space | interval dimension of each support | pillar 3 and the tank T shall be about 10 cm. In the embodiment, the number of support columns 3 is four, but the number is arbitrary as long as the number is three or more.

  As shown in FIGS. 1 and 4, the float 2 includes a gantry part 11 that directly supports the tank T, and a float body 12 that supports the gantry part 11. The gantry 11 is composed of steel (steel frame) as a main part, and extends from the gantry main body 15 located on the lower side of the tank T and the gantry main body 15 and is slidable in the vertical direction with respect to each column 3. And four guide engaging portions 16 that engage with each other. The gantry body 15 is circular when viewed from above, and has the same diameter as the tank T or a slightly larger diameter than the tank T.

  Each guide engaging portion 16 includes a ring-shaped engaging portion main body 21 that surrounds the column 3, and a ring holding portion 22 that extends outward from the gantry main body 15 and holds the engaging portion main body 21. ing. That is, four ring holding portions 22 extend radially from the gantry main body 15, and the engaging portion main bodies 21 are attached to the four ring holding portions 22 (see FIG. 4). Each engagement portion main body 21 is slidably engaged with the support column 3 with a slight gap, and constitutes a contact point with the support column 3 that guides the rising of the tank T.

  Moreover, the engaging part main body 21 is comprised with the vibration proof member which consists of vibration proof rubber etc. As a result, the four engaging portion main bodies 21 serving as contact points with the respective struts 3 not only function as slide members, but also absorb rolls of the tank T (and the pedestal portion 11) caused by earthquake motion or tsunami. Further, even when the gantry 11 is tilted when the tank T is lifted, the engaging portion main body 21 made of a vibration isolating member suppresses “squeaking” between the column 3 and the column 3. In addition, the whole base part 11 may be made into a rectangle, and the guide engaging part 16 may be formed in the four corners. Further, the guide engaging portion 16 may be provided on the float main body 12.

[Modification of guide engaging part]
Here, with reference to FIG. 6, a modified example around the guide engaging portion 16 will be described. The guide engaging portion 16 </ b> A is formed in a semicircular shape having no outer half portion at the engaging portion with the support column 3. That is, the guide engaging portion 16A includes a semi-cylindrical engaging portion main body 21 that engages with the support column 3, a ring holding portion 22 that holds the engaging portion main body 21 and has a semicircular tip. Have.

  A plurality of cross members 24 are attached to the outside of the four support columns 3 so as to tie them in a circular shape. The plurality of cross members 24 are made of a metal shape or the like, and are disposed at equal intervals in the vertical direction over the entire ground portion of the support column 3. Thereby, the protective fence which prevents intrusion of a drifting object (rubble) is comprised by the four support | pillar 3 outside.

  In such a modified example, not only can the float 2 etc. be damaged by the drifting object, but also the drifting object can be prevented from remaining after the tsunami has left. The guide engaging portions 16A are semicircular, but are provided at four locations, so that the guide engaging portions 16A can sufficiently resist the horizontal wave force of the tsunami, and guide the tank T to rise without hindrance.

  As shown in FIG. 1 and FIG. 3, four support blocks 7 that support the gantry 11 are provided below the guide engaging portions 16 via the guide engaging portions 16. Each support block 7 is formed in a cylindrical shape so as to sit on the foundation 5 and to surround the column 3. In other words, the gantry 11 is supported by the float body 12 and the four support blocks 7 located outside the float body 12. The support block 7 is composed of a damping member such as a damping rubber. As a result, the four support blocks 7 absorb the pitching of the tank T caused by earthquake motion or tsunami.

  As shown in FIGS. 1 and 5, an annular anti-vibration member 9 is provided on the upper outer peripheral surface of the tank T so as to wind the tank T. The anti-vibration member 9 is composed of an anti-vibration member such as an anti-vibration rubber and is formed in a trapezoidal cross section. In addition, a predetermined gap is provided between the anti-vibration member 9 and each column 3. If the tank T tilts when ascending (and descending) due to earthquake motion or tsunami, the anti-vibration member 9 interferes with the support column 3 in preference to the tank T, absorbs the impact received by the tank T, and corrects the posture of the tank T. To do. Further, the lower inclined surface portion 9a of the anti-vibration member 9 receives the connection ring 8 and corrects the posture of the descending tank T. Note that the anti-vibration member 9 may be provided only at positions (four locations) corresponding to the support columns 3.

  As shown in FIGS. 1 to 3, the float body 12 is a portion having a buoyancy that allows the tank T to float on the water surface S, is circular in top view, and has the same diameter as the tank T. Is formed. Although not shown in the drawing, the float main body 12 is framed by a steel material (steel frame material). The float main body 12 includes a plurality of float chambers 33 partitioned by the outer shell 31 and the partition plate 32, and a plurality of partial floats 34 accommodated in the respective float chambers 33.

  The plurality of float chambers 33 are partitioned by, for example, a plurality of partition plates 32 concentrically with the outer shell 31 and a plurality of partition plates 32 extending radially (see FIG. 3). Each partial float 34 is formed of a resin independent foam such as foam steel or foam urethane, or an injection type resin independent foam. Thereby, the partial float 34 does not absorb water and maintains its buoyancy even if it touches the water.

  Further, the float body 12 has a plurality of vibration damping supports 36 (vibration damping members) that support the tank T. Each damping support 36 is formed in a columnar shape, and is disposed in each float chamber 33, at the intersection of the partition plate 32, or the like. However, the actual position of the vibration damping support 36 is determined by the position of the crossing portion of the steel material of the gantry 11, and the plurality of vibration damping supports 36 are arranged so as to be dispersed. Thereby, the float main body 12 (a plurality of vibration suppression support bodies 36) constitutes the vibration suppression structure of the tank T together with the above four support blocks 7, and absorbs the seismic motion prior to the tsunami. The buoyancy design of the float 2 is preferably adjusted by the height of the float body 12. Moreover, it is preferable to provide the partial float 34 also in said mount part 11. FIG.

  By the way, the lower part of the tank T is provided with an outflow inlet Ta for flowing out or inflowing stored items, and a pipe P connected to external equipment is connected to the outflow inlet Ta. For this reason, when the tank T is simply levitated, the pipe P may be broken or the area around the outflow inlet Ta of the tank T may be damaged, and the stored product may flow out to the outside.

  Therefore, in the present embodiment, a separate mechanism 10 is provided that separates the pipe P into a fixed pipe PA on the external equipment side and a moving pipe PB on the tank T side as the tank T floats. The pipe P in the vicinity of the tank T is provided with an on-off valve 38 (gate valve or butterfly valve) for opening and closing the pipe P and a flexible joint 39 for earthquake resistance (flexible joint). It is interposed in a pipe P between the valve 38 and the flexible joint 39 (see FIG. 1).

  Although details will be described later, the separation mechanism 10 operates using the buoyancy (levitation force) of the tank T and has a function of closing the fixed pipe PA and the moving pipe PB in addition to a function of releasing the connection state of the pipe P. doing. That is, the separation mechanism 10 separates the pipe P into the fixed pipe PA and the moving pipe PB as the tank T floats, and closes the fixed pipe PA and the moving pipe PB. Thereby, damage around the piping P and the outflow inlet Ta is prevented, and the outflow of the stored material is prevented.

[Separation Mechanism of First Embodiment]
FIGS. 7A and 7B are a side view structure diagram and a top view structure diagram of the separation mechanism 10A of the first embodiment, respectively. As shown in both figures, the separate mechanism 10A is interposed in the pipe P between the on-off valve 38 and the flexible joint 39, and has both a function of separating the pipe P and a function of opening and closing the fixed pipe PA. A separation joint 41 with a valve, a front side valve 42 that is connected to the separation joint 41 with a valve and opens and closes the moving pipe PB, and an engagement stand 43 (fixed side engagement member) that engages with the front side valve 42 It is equipped with.

  As shown in FIG. 7 (a), the separation joint 41 with a valve is composed of a source side joint part 45 on the fixed pipe PA side and a front side joint part 46 on the moving pipe PB side, and constitutes a crank-shaped flow path therein. ing. And the former side joint part 45 and the front side joint part 46 are detachably inserted and joined with the vertical direction (vertical direction) as the axial direction. Further, a non-return valve structure 47 (original side valve) for opening and closing the flow path on the fixed pipe PA side is incorporated in the original side joint portion 45. The non-return valve structure 47 includes a spherical valve body 51, an annular valve seat 52 protruding into the flow path, and a coil spring 53 that biases the valve body 51 toward the valve seat 52. Further, a straight male joint portion 54 is formed on the outer peripheral surface of the former side joint portion 45 in which the valve structure 47 is incorporated. The male joint portion 54 is processed to have a mirror finish, for example.

  The front joint part 46 has a female joint part 56 joined to the male joint part 54 on the inner peripheral surface corresponding to the male joint part 54 of the former side joint part 45. The female joint portion 56 is provided with three O-rings 57 with a gap in the axial direction. Thereby, the front side joint part 46 is inserted and joined to the original side joint part 45 in a liquid-tight manner in the axial direction. The distal end portion of the female joint portion 56 is formed so as to be widened so that the joint to the original side joint portion 45 can be guided. Although details will be described later, even when the tsunami leaves and the separation mechanism 10A returns to the original state, the front joint part 46 is smoothly joined to the original joint part 45.

  Further, the front joint portion 46 is provided with a valve opening rod 58 (valve opening member) extending in the axial direction. The valve opening rod 58 has a base fixed to a part of the front joint 46 and has a tip abutting against the spherical valve body 51. In a state where the valve opening rod 58 is in contact with the valve body 51, the valve body 51 is separated from the valve seat 52, and the valve body 51 has moved to an open position where the flow path is opened. That is, the valve opening rod 58 restricts the position of the valve body 51 to the open position against the coil spring 53.

  From this state, when the tank T starts to rise due to the tsunami, the front side joint portion 46 moves up together with the front side valve 42. Thereby, the female joint part 56 of the front side joint part 46 is pulled upward from the male joint part 54 of the original side joint part 45, and the joining state of the original side joint part 45 and the front side joint part 46 is released. At the same time, the valve opening rod 58 of the front joint 46 is moved upward, and the valve body 51 urged by the coil spring 53 is moved to the closed position where it abuts on the valve seat 52. That is, as the tank T rises, the separation joint 41 with the valve is disconnected, the pipe P is separated into the fixed pipe PA and the moving pipe PB, and the flow path of the fixed pipe PA is blocked. The joint operating mechanism and the original valve operating mechanism referred to in the claims are constituted by a moving pipe PB that moves up as the tank T floats.

  As shown in FIGS. 7A and 7B, the front side valve 42 includes a check valve portion 61 on the tank T side having a check valve structure, and a valve body 62 of the check valve portion 61. And a valve opening / closing mechanism 63 on the side of the separation joint with valve 41 for restricting the position to the open position, and a horizontal flow path is formed inside. The check valve portion 61 includes a valve body 62 that can move in the horizontal direction in the flow path between an open position and a closed position, and a valve seat 64 that is formed in a narrow portion of the flow path. .

  The valve body 62 includes a valve body main body 66 having a tapered portion 66 a corresponding to the valve seat 64, an abutting projection 67 projecting from the valve body main body 66 toward the valve opening / closing mechanism 63, and an abutting projection from the valve body main body 66. 67, and a plurality of open leg portions 68 projecting to the opposite side. The plurality of open legs 68 are equally arranged in the circumferential direction on the back surface of the valve body 66, and a flow path is formed in a gap portion between each other. That is, the plurality of open legs 68 function to prevent the back surface of the valve body 66 from coming into direct contact with the flow path wall and secure the flow path. The abutting projection 67 is in contact with a body portion 72 of a valve opening / closing mechanism portion 63 described later, thereby restricting the opening position of the valve body main body 66.

  The valve opening / closing mechanism 63 includes a valve opening / closing member 71 extending so as to cross the flow path. The valve opening / closing member 71 includes a thick-diameter barrel 72, a shaft 73 holding the barrel 72, and a shaft. And a head 74 provided at one end of 73. The head 74 is exposed from the valve housing 76, and an O-ring 77 is provided between the shaft 73 and the valve housing 76 in the vicinity of the head 74. Thereby, the liquid-tightness of the axial part 73 which penetrates the valve housing 76 is maintained.

  The valve opening / closing member 71 is slidably supported in a horizontal direction perpendicular to the extending direction of the valve body 62 with respect to the valve housing 76 via the shaft portion 73 and the body portion 72. Although the details will be described later, the sliding movement of the valve opening / closing member 71 includes a restriction position in which the above-described abutting protrusion 67 abuts on the body portion 72 and restricts the valve body 62 to an open position, and the abutting protrusion 67 is a body portion. 72 and the restriction release position that allows the valve body 62 to be closed off from the shaft portion 73 side.

  Further, the valve opening / closing mechanism 63 has a coil spring 78 (release urging member) interposed between the valve housing 76 and the body 72. The coil spring 78 urges the valve opening / closing member 71 so that the head 74 protrudes from the valve housing 76. That is, the coil spring 78 urges the valve opening / closing member 71 at the restriction position toward the restriction release position.

  Although details will be described later, the front side valve 42 is engaged so as to be fitted into the stand body 81 of the engagement stand 43 from above, and in this state, the head 74 is pushed against the coil spring 78, The valve opening / closing member 71 has moved to the restriction position. On the other hand, when the entire front valve 42 moves upward as the tank T floats, the front valve 42 disengages upward from the stand body 81 of the engagement stand 43. As described above, when the engagement of the front valve 42 from the stand body 81 is released, the valve opening / closing member 71 is slid from the restricted position to the restricted release position by the coil spring 78. Then, by this sliding movement, the valve body 62 pushed by the flow (pressure) of the stored material moves from the open position to the closed position close to the valve seat 64 and closes the flow path.

  Reference numeral 79 in the figure denotes a setting pin that maintains the valve opening / closing member 71 in the restricted position against the coil spring 78. The setting pin 79 is composed of a stepped urea screw or the like, and is screwed into the valve housing 76 and inserted into a small hole 73a formed in the shaft portion 73 to maintain the valve opening / closing member 71 in the restricted position. In this state, the front side valve 42 is set (engaged) to the engagement stand 43, and then the setting pin 79 is loosened so that the tip is pulled out from the small hole 73a. Thereby, the setting of the front side valve 42 with respect to the engagement stand 43 is completed.

  As shown in FIG. 7A, the engagement stand 43 includes a stand main body 81 with which the front side valve 42 is engaged, a pole portion 82 that supports the stand main body 81, and a fixing portion provided at the lower end of the pole portion 82. 83, and is fixed on the foundation 5 by a fixing portion 83. The stand body 81 is formed in a “U” shape with an open upper surface, and a pair of engagement grooves 81a are formed on the inner peripheral surface thereof so as to face each other (see FIG. 7B). The stand body 81 is set (engaged) so that the front valve 42 is fitted from the upper side. At this time, the head 74 of the valve opening / closing member 71 is fitted into one of the engagement grooves 81a. The convex part of the valve housing 76 on the opposite side to 74 fits into the other engaging groove 81a. Note that the pole portion 82 of the engagement stand 43 may have a nested slide structure, and the stand body 81 may be engaged and set from the lower side with respect to the front valve 42.

  While the engagement stand 43 is fixed to the foundation 5, the front valve 42 moves up as the tank T rises as a part of the moving pipe PB. As a result, the front valve 42 is automatically closed as described above. Therefore, the moving pipe PB is closed at the timing when the fixed pipe PA and the moving pipe PB are separated, and the outflow of stored material from the tank T side which is the moving pipe PB side is prevented. The leading valve operating mechanism described in the claims is composed of a moving pipe PB that moves upward as the tank T floats, and an engagement stand 43.

  As described above, according to the separation mechanism 10A of the first embodiment, the fixed pipe PA and the moving pipe PB are appropriately separated by the separation joint 41 with valve and the front valve 42 as the tank T floats. In addition, the fixed pipe PA and the moving pipe PB can be closed. Therefore, breakage of the piping P and breakage around the outflow inlet Ta of the tank T can be prevented, and outflow of stored items can be effectively prevented.

[Separation Mechanism of Second Embodiment]
FIG. 8 is a structural diagram of the separation mechanism 10B of the second embodiment. As shown in the figure, the separation mechanism 10B is provided on a lower side of the separation joint 91, and a separation joint 91 including a front side joint portion 92 on the fixed pipe PA side and a front side joint portion 93 on the moving pipe PB side. And an original valve 94 that can open and close the fixed pipe PA, and a front valve 95 that is disposed above the separation joint 91 and can open and close the moving pipe PB. A flow path constituted by the original side valve 94, the separation joint 91, and the front side valve 95 extends in the vertical direction (vertical direction).

  Further, the separate mechanism 10B receives the buoyancy of the float 2 and closes the original valve 94 by receiving a joint operating mechanism 96 that separates the original joint 92 and the front joint 93 and the float 2 buoyancy. A main valve operating mechanism 97 that operates and a front valve operating mechanism 98 that receives the buoyancy of the float 2 and closes the front valve 95 are provided. In this case, the main valve operating mechanism 97, the joint operating mechanism 96, and the leading valve operating mechanism 98 are fixed to the float 2 or the tank T so as to receive the buoyancy of the float 2.

  The separation joint 91 includes an original side joint portion 92 connected to the original side valve 94 and a front side joint portion 93 connected to the front side valve 95. The original side joint portion 92 and the front side joint portion 93 are arranged in the vertical direction ( It is inserted and joined in the vertical direction). Further, the separation joint 91 has a hooking mechanism 99 that locks / unlocks the joining state of the former side joint part 92 and the front side joint part 93.

  A tapered female joint portion 101 is formed on the upper inner peripheral surface of the former-side joint portion 92. An annular hook receiving portion 102 projects from the outer peripheral surface of the intermediate portion of the former joint portion 92. On the other hand, a tapered male joint portion 103 to which the female joint portion 101 is joined is formed on the lower outer peripheral surface of the front joint portion 93. The female joint portion 101 and the male joint portion 103 have complementary taper shapes, and a seal packing (not shown) is provided at a contact portion between the female joint portion 101 and the male joint portion 103. ing. Thereby, the former side joint part 92 and the front side joint part 93 are inserted in a liquid-tight manner in the vertical direction (axial direction).

  The hooking mechanism 99 includes a plurality (three or more) of hook claws 105 (hooking members) and an annular spring 106 provided at the tip of the plurality of hook claws 105. Each hook claw 105 is formed in a shape warped in a “<” shape and is rotatably supported on the outer peripheral surface of the front joint portion 93 at the upper and lower intermediate portions. As will be described in detail later, each hook claw 105 rotates between a hooking position where the lower half is parallel to the axis and a hooking release position where the upper half is parallel to the axis.

  The annular spring 106 is formed in an annular shape by connecting the end portions of the coil spring, and is disposed so as to surround the plurality of hook claws 105 at the lower part thereof. That is, the annular spring 106 urges each hook claw 105 to rotate toward the hooking position. As a result, the plurality of hook claws 105 are hooked to the hook receiving portion 102 by the annular spring 106 (locked) and unlocked from the hook receiving portion 102 against the annular spring 106 (unlocked). ).

  The joint actuating mechanism 96 supports an annular hook release ring 108 (hook release member) having a virtual circle formed by connecting the lower outer peripheral surfaces of the plurality of hook claws 105 in a circular shape, and a hook release ring 108 on the tip side. And a support arm 109 fixed to the tank T side at the base end side. The hook release ring 108 preferably has a two-part structure and is set after the separation joint 91 is installed.

  The hook release ring 108 disposed so as to surround the plurality of hook claws 105 in a state where the former side joint portion 92 and the front side joint portion 93 are joined is located in the vicinity of the upper side of the annular spring 106, Each hook claw 105 has moved to the hooking position. When the tank T rises from this state, the hook release ring 108 moves up accordingly. When the hook release ring 108 reaches the upper part of the hook claw 105, the plurality of hook claws 105 are simultaneously rotated to the hook release position and detached from the hook receiving portion 102. Thereby, joining of the former side joint part 92 and the front side joint part 93 (separation joint 91) is released, and the pipe P is separated into the fixed pipe PA and the moving pipe PB.

  The original side valve 94 is obtained by modifying a commercially available lift type check valve and mounting it sideways. A support rod 112 that guides the movement of the valve element 111 between an open position and a closed position is provided in the housing. It passes through the (mounting lid 113) and is exposed to the outside. The support rod 112 that supports the valve body 111 at the tip penetrates the attachment lid 113 and is slidably supported by the attachment lid 113. An O-ring 114 is provided between the mounting lid 113 and the support rod 112 to maintain liquid tightness. A through hole 112a and a finger ring portion 112b are formed in the exposed portion of the support rod 112. With this ring portion 112b, a later-described operation pin 121 can be easily set in the through hole 112a. Yes.

  A coil spring 116 (blocking biasing member) is provided inside the former side valve 94 so as to be wound around the support rod 112. The coil spring 116 urges the valve body 111 in the open position toward the closed position. Although details will be described later, the valve body 111 is restricted to the open position against the coil spring 116 by pulling the support rod 112 outward and inserting the operating pin 121 into the through hole 112a. When the operating pin 121 is pulled out from this state, the valve element 111 is moved to the closed position in close contact with the valve seat 117 by the coil spring 116.

  The original valve operating mechanism 97 is connected to the operating pin 121 (rod engaging member) inserted (engaged) into the through hole 112 a of the support rod 112, the wire 122 connected to the upper end of the operating pin 121, and the wire 122. And mounting bracket 123. The mounting bracket 123 is fixed to the tank T side, and when the tank T rises, the operating pin 121 moves upward through the mounting bracket 123 and the wire 122 so as to be pulled out from the through hole 112a of the support rod 112.

  That is, as the tank T floats, the operating pin 121 is pulled out from the through hole 112a of the support rod 112 (disengagement). When the operating pin 121 is pulled out from the through hole 112a, the support rod 112 is slid by the coil spring 116, and the valve body 111 moves to the closed position. As a result, the original valve 94 is closed. When the valve body 111 is set to the original open position, the support rod 112 is pulled out against the coil spring 116, and the operation pin 121 is inserted into the through hole 112a from above.

  The front side valve 95 has the same structure as the original side valve 94. However, the front valve 95 is mounted upside down with respect to the original valve 94. The leading valve operating mechanism 98 also has the same structure as the original valve operating mechanism 97. In this case, although the mounting position of the mounting bracket 123 in the vertical direction is different, the mounting bracket 123 is provided in the same posture as a whole.

  As described above, according to the separation mechanism 10B of the second embodiment, the separation joint 91 is separated as the tank T floats, and the original valve 94 and the front valve 95 are closed substantially at the same time. That is, the fixed pipe PA and the moving pipe PB can be appropriately separated in accordance with the rising of the tank T, and the fixed pipe PA and the moving pipe PB can be closed. Accordingly, it is possible to effectively prevent the stored material from flowing out from the fixed pipe PA and the moving pipe PB.

  The mutual relationship between the separation timing of the separation joint 91 and the closing timing of the main valve 94 and the front valve 95 is the insertion length of the operation pin 121 on the main valve operation mechanism 97 side and the front valve operation mechanism 98 side. It is preferable to adjust by such as. In addition, a tensile force is applied to the pipe P from the time when the tank T starts to float until the separation joint 91 is separated, but this tensile force is absorbed by the flexible joint 39.

[Separation Mechanism of Third Embodiment]
FIG. 9 is a structural diagram of a separation mechanism 10C of the third embodiment. As shown in the figure, the separation mechanism 10C is arranged on the lower side of the separation joint 131 and the separation joint 131 composed of the former side joint part 132 and the front side joint part 133 as in the second embodiment. The former side valve 134 and the front side valve 135 disposed on the upper side of the separation joint 131 are provided. And the flow path comprised by the origin side valve | bulb 134, the separation coupling 131, and the front side valve | bulb 135 is extended in the perpendicular direction (up-down direction).

  Further, the separate mechanism 10 </ b> C includes a joint operating mechanism 136 that separates the original side joint portion 132 and the front side joint portion 133, a main valve operating mechanism 137 that closes the original side valve 134, and a closing operation of the front side valve 135. And a leading valve operating mechanism 138. Although the details will be described later, the main valve operating mechanism 137 and the front valve operating mechanism 138 are configured to be used together.

  The separation joint 131 has a former-side joint part 132 and a front-side joint part 133, and the former-side joint part 132 and the front-side joint part 133 are inserted and joined in the vertical direction (vertical direction). Further, the separation joint 131 has a lock mechanism 139 that locks / unlocks the joint state between the former side joint part 132 and the front side joint part 133. In this case, the separation joint 131 has a form of a so-called one-touch joint (one-touch coupler).

  A tapered male joint portion 141 is formed on the upper outer peripheral surface of the former side joint portion 132. In addition, an annular groove 142 having an arcuate cross section with which a plurality of lock balls 148 described later are engaged is formed on the outer peripheral surface of the intermediate portion of the male joint portion 141. On the other hand, a tapered female joint portion 143 to which the male joint portion 141 is joined is formed on the lower inner peripheral surface of the front joint portion 133. In addition, a seal packing (not shown) is provided at a contact portion between the male joint portion 141 and the female joint portion 143, and the original joint portion 132 and the front joint portion 133 are arranged in the vertical direction (axial direction). In, the liquid-tight insertion and joining. On the other hand, a plurality of lateral holes 144 are formed in the middle portion of the female joint portion 143 in the circumferential direction, and a plurality of lock balls 148 described later are accommodated in the lateral holes 144.

  The lock mechanism 139 includes an annular lock member 146 disposed so as to surround the front joint portion 133, a lock spring 147 that urges the lock member 146 downward, and a plurality of the plurality of lateral holes 144 that are inserted into the plurality of lateral holes 144. And a lock ball 148. The lock member 146 includes a cylindrical portion 151 and a flange portion 152, and a spring receiving portion 152 a of a lock spring 147 is formed on the flange portion 152. On the inner peripheral surface of the cylindrical portion 151, a tapered surface 151 a that expands downward is formed at an intermediate portion thereof, and an expanded surface 151 b that continues to the tapered surface 151 a is formed at the lower portion.

  The lock member 146 is supported so as to be slidable in the vertical direction (movable up and down) with respect to the front joint portion 133 and is urged downward by a lock spring 147. At the lock position (downward movement position) where the lock member 146 moves downward by the lock spring 147 and the tapered surface 151a faces the plurality of lock balls 148, the plurality of lock balls 148 are pushed inward by the taper surface 151a. It enters into the annular groove 142 and the joint state between the male joint portion 141 and the female joint portion 143 is locked. On the other hand, at a lock release position (upward movement position) where the lock member 146 moves upward against the lock spring 147 and the expanded surface 151b faces the plurality of lock balls 148, the plurality of lock balls 148 are expanded. It moves freely between 151b and the annular groove 142, and the joint state of the male joint part 141 and the female joint part 143 is unlocked (unlocked).

  The joint actuating mechanism 136 includes an annular unlocking ring 154 (unlocking member) provided so as to surround the cylindrical portion 151 of the locking member 146, and the unlocking ring 154 on the distal end side and the tank T on the proximal end side. And a support arm 155 fixed to the side. The unlocking ring 154 preferably has a two-part structure and is set after the separation joint 131 is constructed.

  The lock release ring 154 is in a position spaced downward from the flange portion 152 of the lock member 146 in a state where the former side joint portion 132 and the front side joint portion 133 are joined. When the tank T ascends from this state, the lock release ring 154 moves up accordingly. When the lock release ring 154 reaches the flange portion 152 and further pushes up the lock member 146 to reach the lock release position, the lock ball 148 becomes free. Thereby, the joint of the former side joint part 132, the front side joint part 133, and the (separation joint 131) is released, and the pipe P is separated into the fixed pipe PA and the moving pipe PB.

  The original valve 134 is an improvement over a commercially available butterfly valve. Specifically, the original valve 134 is configured such that the operation lever 161A is opened and closed between a downward 45 ° open position and an upward 45 ° closed position. On the other hand, the front side valve 135 has the same structure as the original side valve 134 and is attached to the original side valve 134 so as to be turned upside down. That is, the front valve 135 is configured such that the operation lever 161B is opened and closed between an open position of 45 ° upward and a closed position of 45 ° downward.

  The main valve operating mechanism 137 and the front valve operating mechanism 138 that are also used as mutual are configured by a connecting member 163 that connects the operation lever 161A of the original valve 134 and the operation lever 161B of the front valve 135. The connecting member 163 is made of a wire material such as a stainless steel wire or a copper wire, and connects the tip portions of the operation levers 161A and 161B in a stretched state.

  When the tank T rises and the separation joint 131 is separated, the two operation levers 161A and 161B are pulled to each other via the connecting member 163. As a result, the operation lever 161A of the original valve 134 is rotated from 45 ° downward to 45 ° upward, and the original valve 134 is closed. At the same time, the operation lever 161B of the front valve 135 is rotated from 45 ° upward to 45 ° downward, and the front valve 135 is also closed. Furthermore, when the tank T rises, the connecting member 163 reaches the limit and is broken.

  As described above, according to the separation mechanism 10C of the third embodiment, the fixed pipe PA and the movable pipe PB can be appropriately separated in accordance with the rising of the tank T, and the fixed pipe PA and the movable pipe PB are closed. can do. Accordingly, it is possible to effectively prevent the stored material from flowing out from the fixed pipe PA and the moving pipe PB.

  In this case as well, a tensile force is applied to the pipe P from the time when the tank T starts to rise until the separation joint 131 separates, but this tensile force is preferably absorbed by the flexible joint 39. . Moreover, the separation joint 91 of the second embodiment and the separation joint 131 of the third embodiment can be substituted for each other.

[Fourth Embodiment]
By the way, when the tsunami leaves, the tank T and the float 2 are lowered to their original positions and are seated on the foundation 5. At this time, it is assumed that rubble and earth and sand remain on the foundation 5. . Therefore, in this embodiment, the float 2 is provided with a plurality of landing legs 170 (support mechanisms), and the tank T and the float 2 that have been lowered are once supported at a predetermined height position by the plurality of landing legs 170, and then the rubble or earth and sand are supported. After being removed, it is possible to get seated (landed) on the foundation 5 (base).

  FIG. 10 shows a landing leg 170 obtained by modifying a hydraulic cylinder, and a plurality of the landing legs 170 are attached so as to surround the float 2. As shown in the figure, each landing leg 170 has the form of a hydraulic cylinder, and is a cylinder tube 181, a piston 182 built in the cylinder tube 181, and a piston rod provided with a piston 182 at one end. 183. The other end of the piston rod 183 is supported by the float 2 (preferably the gantry 11) via the bracket 184, while the lower end of the cylinder tube 181 is seated on the foundation 5.

  A plurality of check valves 186 are incorporated in the piston 182. Each check valve 186 is incorporated in the direction of “open” when the piston 182 moves upward and “closed” when the piston 182 moves downward. The upper cylinder chamber 187 (head side cylinder chamber) on the upper side and the lower cylinder chamber 188 (bottom side cylinder chamber) on the lower side with the piston 182 are filled with hydraulic oil, respectively. That is, the upper cylinder chamber 187 and the lower cylinder chamber 188 communicate with each other via a plurality of check valves 186. On the other hand, the upper cylinder chamber 187 and the lower cylinder chamber 188 communicate with each other by a return pipe 191 that connects the upper end portion of the upper cylinder chamber 187 and the lower end portion of the lower cylinder chamber 188. A return valve 192 (open / close valve) that opens and closes the flow path of the return pipe 191 is interposed on the lower cylinder chamber 188 side of the return pipe 191.

  When the tank T (float 2) ascends, the piston 182 and the piston rod 183 move upward while leaving the cylinder tube 181 under the weight of the cylinder tube 181 (and hydraulic oil). At this time, the plurality of check valves 186 are “open”, and the hydraulic oil in the upper cylinder chamber 187 flows into the lower cylinder chamber 188. Eventually, when the piston 182 reaches the upper end of the cylinder tube 181, it is pulled by the piston rod 183 and the cylinder tube 181 also moves upward. That is, when the piston 182 reaches the upper moving end, the entire landing leg 170 moves upward (is lifted).

  On the other hand, when the tsunami leaves and the tank T and the float 2 are lowered, the extended landing leg 170 is landed on the foundation 5 first. Subsequently, the piston rod 183 is pushed downward. As a result, the plurality of check valves 186 are “closed”, the hydraulic oil in the upper cylinder chamber 187 has a negative pressure, the hydraulic oil in the lower cylinder chamber 188 has a positive pressure, and the downward movement of the piston rod 183 is regulated. The As a result, the tank T and the float 2 are supported by the landing legs 170 (plurality) (a work space is formed below the float 2). Here, rubble and earth and sand that have flowed onto the foundation 5 are removed, each part is repaired, and the separation mechanism 10 is cleaned. The distance (work space) between the lower surface of the float 2 supported by the landing legs 170 and the upper surface of the foundation 5 is preferably about 1.0 to 1.5 m in consideration of workability.

  When the operations such as removal and cleaning are completed, the return valve 192 of the landing legs 170 (plurality) is opened. When the return valve 192 is opened, the hydraulic oil in the lower cylinder chamber 188 flows into the upper cylinder chamber 187 via the return pipe 191, and the tank T and the float 2 are slowly lowered. Eventually, the tank T and the float 2 are seated on the foundation 5 and the separated mechanism 10 which has been separated is brought into a joined state.

  Thus, by providing a plurality of landing legs 170 on the float 2, cleaning after a tsunami can be easily performed, and the tank T can be completely restored to its original state. Also, the landing leg 170 itself can be automatically restored. The check valve 186 provided on the piston 182 may be a single one. Moreover, the form which incorporates the some landing leg 170 in the inside of the float 2 may be sufficient.

[Modification of Fourth Embodiment]
FIG. 11 is a system diagram of a landing leg 170 according to a modification of the fourth embodiment. In this modification, the ports of the upper cylinder chamber 187 in the plurality (all) landing legs 170 are connected to the supply main pipe 194 and the ports of the lower cylinder chamber 188 are connected to the discharge main pipe 195. The supply main pipe 194 is piped in an annular shape so as to extend over the plurality of landing legs 170, and a supply valve 196 is connected to one place of the pipe via a joint (cheese). Similarly, the discharge main pipe 195 is piped in an annular shape so as to extend over the plurality of landing legs 170, and a discharge valve 197 is connected to one place of the pipe via a joint (cheese).

  In this modification, when the tank T and the float 2 supported by the plurality of landing legs 170 are lowered, the hydraulic oil supply tank 198 is connected to the supply valve 196 side, and the hydraulic oil is discharged to the discharge valve 197 side. Connect the tank 199. In this state, the supply valve 196 is set to “open” and the discharge valve 197 is set to “open”. As a result, the hydraulic oil is simultaneously extracted from the lower cylinder chambers 188 of the plurality of landing legs 170, and the hydraulic oil is simultaneously supplied to the upper cylinder chambers 187 of the plurality of landing legs 170. As a result, a plurality of landing legs 170 can be simultaneously operated by two valve operations of the supply valve 196 and the discharge valve 197, and the tank T and the float 2 are lowered while maintaining the horizontal posture, and on the foundation 5 Can land on.

[Fifth Embodiment]
FIG. 12 shows a landing leg 170A obtained by modifying the air cylinder, and a plurality of landing legs 170A are attached so as to surround the float 2 as in the fourth embodiment. As shown in the figure, each landing leg 170A has the form of an air cylinder, a cylinder tube 201, a piston 202 built in the cylinder tube 201, and a piston rod provided with a piston 202 at one end. 203. Unlike the fourth embodiment, the landing leg 170A is provided in an upside down posture. That is, the base end (bottom side) of the cylinder tube 201 is supported by the float 2 (preferably, the gantry 11) via the bracket 204, while the other end (head side) of the piston rod 203 is the base 5. Sitting on top.

  Then, air is supplied to the upper base cylinder chamber 205 (bottom side cylinder chamber) and the lower front cylinder chamber 206 (head side cylinder chamber) with the piston 202 interposed therebetween. The base cylinder chamber 205 contains a pressing spring 207 that relatively biases the piston 202. On the other hand, a check valve 209 is connected to the first port 208 of the base cylinder chamber 205, and an exhaust pipe 212 is connected to the second port 211. The check valve 209 is “open” when the cylinder tube 201 moves upward (the piston 202 moves relatively downward), and “closes” when the cylinder tube 201 moves downward (the piston 202 moves relatively upward). Connected in the direction.

  The exhaust pipe 212 is connected to the second port 211 of the base cylinder chamber 205 in the plural (all) landing legs 170A. In this case, the exhaust pipe 212 is piped in an annular shape so as to extend over the plurality of landing legs 170A, and an exhaust valve 213 (open / close valve) is connected to one place of the pipe via a joint (cheese). A third port 214 that functions as a vent is provided at the end of the front cylinder chamber 206, and a filter 216 is connected to the third port 214 via a rising pipe 215.

  When the tank T (float 2) rises, the cylinder tube 201 moves upward together with the float 2, while the piston 202 maintains a state of being seated on the foundation 5 by its own weight and the pressing spring 207. At this time, the check valve 209 is “open” and air flows into the base cylinder chamber 205 from the outside. At the same time, the air in the front cylinder chamber 206 flows out from the filter 216 through the third port 214 and the rising pipe 215. The exhaust valve 213 is kept “closed”. Eventually, when the piston 202 reaches the lower end portion (tip end portion) of the cylinder tube 201, the piston 202 and the piston rod 203 move upward by being pulled by the cylinder tube 201. That is, the landing leg 170A moves upward (is lifted) after it has been fully extended.

  On the other hand, when the tsunami leaves and the tank T and the float 2 descend, the extended landing leg 170A first lands on the foundation 5. Subsequently, the cylinder tube 201 is pushed downward, and the base cylinder chamber 205 is pressurized. As a result, the check valve 209 is “closed” and the downward movement of the cylinder tube 201 relative to the piston rod 203 is regulated. As a result, the tank T and the float 2 are supported by the landing legs 170A (plural). Here, as in the fourth embodiment, operations such as removal and cleaning of debris are performed.

  When the operations such as removal and cleaning are completed, the exhaust valve 213 is opened. When the exhaust valve 213 is opened, air is simultaneously extracted from the base cylinder chamber 205 of the plurality of landing legs 170A, and air is simultaneously supplied from the third port 214 of the plurality of landing legs 170A to the front cylinder chamber 206. The As a result, the tank T and the float 2 descend while maintaining the horizontal posture and land on the foundation 5.

  Thus, by providing the float 2 with the plurality of landing legs 170A, cleaning after the tsunami can be easily performed, and the tank T can be completely restored to the original state. Also, the landing leg 170A itself can be automatically restored. In the fifth embodiment, it is possible to adopt a structure in which the check valve 209 is incorporated into the piston 202 as in the fourth embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Attached equipment, 2 ... Float, 3 ... Support | pillar, 5 ... Foundation, 7 ... Support block, 8 ... Connection ring, 9 ... Anti-rest member 10, 10A, 10B, 10C ... Separate mechanism, 11 ... Mount part, 12 DESCRIPTION OF SYMBOLS ... Float main body, 15 ... Base part main body, 16 ... Guide engagement part, 21 ... Engagement part main body, 22 ... Ring holding part, 31 ... Outer shell, 32 ... Separator, 33 ... Float chamber, 34 ... Partial float, 36 DESCRIPTION OF SYMBOLS ... Damping support body, 41 ... Separation joint with valve, 42 ... Front side valve, 43 ... Engagement stand, 45 ... Original side joint part, 46 ... Front side joint part, 47 ... Valve structure, 51 ... Valve body, 53 DESCRIPTION OF SYMBOLS ... Coil spring, 58 ... Valve opening rod, 61 ... Check valve part, 62 ... Valve body, 63 ... Valve opening / closing mechanism part, 67 ... Butting projection, 71 ... Valve opening member, 78 ... Coil spring, 81 ... Stand main body, 91 ... separation joint, 92 ... former side joint, 93 ... previous side joint , 94 ... Former side valve, 95 ... Former side valve, 96 ... Joint operating mechanism, 97 ... Former valve operating mechanism, 98 ... Former valve operating mechanism, 99 ... Hooking mechanism, 105 ... Hook claw, 106 ... Annular spring, 108 DESCRIPTION OF SYMBOLS ... Hook release ring, 111 ... Valve body, 112 ... Support rod, 116 ... Coil spring, 121 ... Actuation pin, 131 ... Separation joint, 132 ... Former side joint part, 133 ... Former side joint part, 134 ... Former side valve, 135 Reference valve: 136: Joint operating mechanism, 137: Original valve operating mechanism, 138: Previous valve operating mechanism, 139: Lock mechanism, 146: Lock member, 147: Lock spring, 148: Lock ball, 154: Lock release ring, 161A, 161B ... control lever, 163 ... connecting member, 170,170A ... landing leg, 181 ... cylinder tube, 182 ... piston, 183 ... pisto Rod, 186 ... Check valve, 187 ... Upper cylinder chamber, 192 ... Return valve, 195 ... Discharge main pipe, 197 ... Discharge valve, 201 ... Cylinder tube, 202 ... Piston, 203 ... Piston rod, 205 ... Base cylinder chamber 209: Check valve, 212: Exhaust pipe, 213: Exhaust valve, T ... Tank, Ta ... Outflow inlet, G ... Ground, P ... Piping, PA ... Fixed piping, PB ... Moving piping, S ... Water surface

Claims (19)

A float that supports the tank and floats the tank against the tsunami attack,
A plurality of struts arranged at equal intervals in the circumferential direction around the tank, and for guiding the rising of the tank,
The auxiliary equipment for a tank, wherein the float has a buoyancy that allows the tank to float so that the tank is positioned on a water surface. The float has a gantry part directly supporting the tank at an upper part,
The gantry is
A gantry body located below the tank;
The auxiliary equipment for a tank according to claim 1, further comprising a plurality of guide engaging portions extending from the gantry main body and slidably engaged with the respective columns in the vertical direction. Each of the guide engaging portions is
A ring-shaped engagement portion main body surrounding the support column;
A ring holding portion that extends from the gantry main body and holds the engaging portion main body,
The auxiliary equipment for a tank according to claim 2, wherein the engagement portion main body is constituted by a vibration isolation member. A plurality of support blocks for supporting the gantry part via each guide engaging part, further comprising:
4. The tank incidental equipment according to claim 2, wherein each of the support blocks is configured by a damping member provided so as to surround each of the support columns. 5. On the upper outer peripheral surface of the tank, further comprising a vibration-preventing member provided at a position corresponding to at least the support column
The auxiliary equipment for a tank according to any one of claims 1 to 4, wherein the anti-vibration member is formed of an anti-vibration member.   6. The connecting ring according to claim 1, further comprising a connection ring that is provided at an upper end portion of the plurality of support columns and guides the rising of the tank and connects the plurality of support columns in an annular shape. Ancillary equipment for tanks. The float is
A plurality of float chambers partitioned by an outer shell and a partition plate;
A plurality of partial floats housed in each of the float chambers,
The auxiliary equipment for a tank according to any one of claims 1 to 6, wherein each of the partial floats is composed of an independent foam.   The auxiliary equipment for a tank according to any one of claims 1 to 7, wherein the float further includes a plurality of vibration damping members that support the tank. The tank is connected to piping connected to external equipment,
A separation mechanism that is interposed in the pipe in the vicinity of the tank, releases the connection state of the pipe as the tank floats, and separates the pipe into a fixed pipe on the external equipment side and a moving pipe on the tank side Further comprising
The auxiliary equipment for a tank according to any one of claims 1 to 8, wherein the separation mechanism is operated by buoyancy of the float. The separation mechanism is
A separation joint composed of a former joint part on the fixed pipe side and a front joint part on the movable pipe side, which are joined to each other so as to be separable from each other,
An original valve connected to the original joint and capable of opening and closing the fixed pipe;
A front side valve connected to the front side joint part and capable of opening and closing the moving pipe;
A joint actuation mechanism that receives the buoyancy of the float and separates the original joint part and the front joint part;
An original valve operating mechanism that receives the buoyancy of the float and closes the original valve;
The auxiliary equipment for a tank according to claim 9, further comprising a front valve operating mechanism that receives the buoyancy of the float and closes the front valve. The former side joint part and the front side joint part are inserted and joined with the vertical direction as an axial direction,
The non-return valve structure that also serves as the original valve is incorporated in the original joint portion,
The front joint portion is provided with a valve opening member extending in the axial direction and restricting the valve body of the valve structure to an open position,
The auxiliary equipment for a tank according to claim 10, wherein the joint operating mechanism and the original valve operating mechanism are configured by the moving pipe that moves upward as the tank floats. The front side valve is
A valve configured to be slidable in a horizontal direction between a check valve portion, a restriction position for restricting the valve body of the check valve portion to an open position, and a restriction release position for allowing the valve body to be closed An opening / closing member, and a release urging member that urges the valve opening / closing member in the restriction position toward the restriction release position,
The tip valve operating mechanism is
The moving pipe that moves upward as the tank floats, and the moving pipe that moves upward, are fixedly engaged with the valve opening / closing member in the open position, and the upward movement of the moving pipe It has a fixed side engaging member which cancels | releases the said engagement with it, The incidental equipment of the tank of Claim 10 or 11 characterized by the above-mentioned. The former side joint part and the front side joint part are inserted and joined with the vertical direction as an axial direction,
The separation joint is
A locking member provided to be movable up and down with respect to the front joint portion between a downward movement position for locking the joint state of the original side joint portion and the front side joint portion and an upward movement position for unlocking. And further,
11. The joint operating mechanism includes a lock release member that moves upward as the tank floats and moves the lock member from the lower movement position to the upper movement position. Ancillary equipment for tanks. The former side joint part and the front side joint part are inserted and joined with the vertical direction as an axial direction,
The separation joint is
A plurality of hookings provided so as to be rotatable with respect to the front joint portion between a hooking position for locking the joining state of the original side joint portion and the front side joint portion and a hooking release position for releasing hooking. A member, and
11. The hook operating mechanism according to claim 10, wherein the joint operating mechanism includes a hooking release member that moves upward as the tank floats, and simultaneously rotates the plurality of hooking members from the hooking position to the hooking release position. Ancillary equipment of the described tank. The original side valve and the front side valve are:
A supporting rod for guiding the movement of the valve body between the open position and the closed position passes through the housing and is exposed to the outside, and the closing bias for biasing the valve body in the open position toward the closed position Each is constituted by a check valve having a member,
The former valve operating mechanism and the previous valve operating mechanism are:
14. The rod engagement member that engages with an exposed portion of the support rod in the open position and releases the engagement as the tank floats, respectively. 14. Ancillary facilities for tanks according to 14. The former side valve is constituted by a first butterfly valve whose operation lever is opened and closed between an open position of 45 ° downward and a closed position of 45 ° upward,
The front side valve is constituted by a second butterfly valve whose operation lever is opened and closed between an open position of 45 ° upward and a closed position of 45 ° downward,
The original valve operating mechanism and the leading valve operating mechanism are constituted by a connecting member that connects the operation lever of the first butterfly valve and the operation lever of the second butterfly valve,
15. The tank according to claim 13, wherein the connecting member closes the first butterfly valve and the second butterfly valve as the tank floats, and then breaks the tank. 15. Ancillary equipment. A plurality of supports for supporting the float at a predetermined height position so that a work space is formed between the base and the base in preference to the float as the float descends after the ascent. Further comprising a mechanism;
The plurality of support mechanisms are attached to the float in a dispersed state,
Each of the support mechanisms is
A mechanism main body configured to be changeable between a supporting posture for supporting the float and a non-supporting posture for allowing the float to be seated on the base;
A non-return portion that allows the posture change from the non-supporting posture to the supporting posture as the float rises, and reverses the support posture so as to maintain the support posture when landing on the base;
The tank incidental facility according to any one of claims 1 to 16, further comprising a non-return release portion that releases a non-return state of the non-return portion. The mechanism body has a basic form of either a hydraulic cylinder or an air cylinder,
The check portion has a check valve communicating with the bottom cylinder chamber,
The auxiliary equipment for a tank according to claim 17, wherein the non-return release unit has an on-off valve communicating with the bottom cylinder chamber. The plurality of bottom side cylinder chambers in the plurality of support mechanisms are in communication with each other by piping,
19. The tank incidental facility according to claim 18, wherein the on-off valve is provided in the pipe.

Images