JP5950274B2 - Detonation structure of steel-lined atmospheric concrete tank - Google Patents

Description

  The present invention relates to a detonation structure of a steel-plate-lined atmospheric concrete tank that releases an abnormally rising pressure in a tank that stores dangerous liquids such as petroleum.

Steel outdoor storage tanks that store liquids of dangerous materials such as oil can release internal gas or vapor to the upper part when the pressure in the tank rises abnormally due to explosion of dangerous materials etc. by the Fire Service Act It is determined to be a structure. In general, the joint between the top angle of the top of the tank and the roof plate is weakened, and when the pressure rises abnormally, a detonation structure is adopted in which the weld line in this part breaks.
The storage tank with a composite structure consisting of a concrete side wall and a steel roof, which is used for ordinary water tanks and low-temperature tanks, does not require the steel roof to be detonated. In the case of a dike-integrated steel plate-lined atmospheric concrete tank, it is necessary to make the steel roof an explosion structure.

  There is an application patent related to the structure of tank detonation. For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 08-217192) “Tank Explosion Structure” includes the upper flange portion 104 of the side plate 101 and the outer peripheral upper surface of the roof plate 105 as in Conventional Example 1 shown in FIG. A configuration in which an annular detonation plate 106 is bridged between and fixed by welding is disclosed.

  In addition, the case of the detonation structure 5A of the conventional example 2 shown in FIG. 6 has a steel cylindrical body plate 108 erected by embedding a plate 107 in a concrete side wall 4, and has an upper flange. The outer peripheral edge of the steel roofing plate 5 is hermetically fixed to the upper surface by fillet welding 109, and when the pressure in the tank suddenly increases, the fillet welding 109 breaks and the outer periphery of the roofing plate 5 Is configured to be opened.

Further, in Patent Document 2 (Japanese Patent Application No. 2011-238286) “steel-plate lining atmospheric concrete tank equipped with an explosion structure”, as shown in a comparative example shown in FIG. A detonation structure 5A composed of a ring plate 102 and an anchor pin 103 is provided at the upper edge of the side wall of a steel plate-lined normal pressure concrete tank provided with a roof plate 5 made of steel. An explosive structure is shown that allows the tank to escape quickly and prevent explosion and collapse of the tank.

Japanese Patent Laid-Open No. 08-217192 Japanese Patent Application No. 2011-238286

For steel outdoor storage tank for storing liquid petroleum such as hazardous materials, to weak joints between the top angle and shingle tank top, the weld line is destroyed when the pressure rises abnormally , by releasing internal gas or vapor at the top, and prevents accidents caused by the entire tank explosion collapse.
In addition, the composite storage tank consisting of a concrete side wall and steel roof, which is used for ordinary water tanks and low-temperature tanks, does not require the steel roof to be detonated, but it stores liquids such as oil. In order to make a normal pressure concrete tank with a concrete wall with a breakwater and a steel roof, when the pressure in the tank rises abnormally, the tank is released by releasing gas or steam to the upper part. In order to prevent disasters caused by the entire explosion and collapse, it was necessary to make the steel roof an explosion structure.

  Patent Document 1 (Japanese Patent Laid-Open No. 08-217192) of Conventional Example 1 shown in FIG. 5 is a tank detonation structure in which an annular detonation plate 4 is formed on the upper flange portion 3a of the side plate 1 and the outer peripheral upper surface of the roof plate 2. Although the structure which welded and fixed was disclosed, it is not what was provided in the roof which requires the explosion board 4 separately and coat | covers the upper part of a concrete side wall.

  Further, in the case of the explosion structure 5A of the prior art example 2 shown in FIG. 6, the steel side wall 4 made of concrete has a steel cylindrical body plate 18 with a plate 17 embedded therein, and the upper surface of the upper end flange has steel. In the case of a tank in which the outer peripheral edge of the roof plate 5 is hermetically fixed by the fillet weld 19, the fillet weld 19 is broken and the outer peripheral portion of the roof plate 5 is broken when the pressure in the tank suddenly increases. Although the structure is opened, it does not correspond to a roof that requires a separate adjustment plate 7 and covers the upper part of the concrete side wall.

  Further, in Patent Document 2 (Japanese Patent Application No. 2011-238286) “Steel-lined atmospheric concrete tank equipped with an explosion structure”, as shown in the comparative example shown in FIG. A detonation structure 5A for releasing the internal pressure of the tank is provided in the vicinity of the joint between the upper edge of the side wall of the steel plate-lined atmospheric concrete tank and the outer periphery of the roof plate. In the abnormal situation where the pressure suddenly rises, an explosion structure is shown in which the pressure is quickly released to prevent explosion and collapse of the tank. However, since the anchor pin 103 is also removed together with the ring plate 102, the posterior However, there was a concern that it would take time to repair the upper edge of the concrete side wall.

  The conventional technique is an explosion structure provided on a roof having a side plate made of steel plate, and a steel plate for storing a liquid of dangerous materials such as oil having a concrete wall with a breakwater integrated type wall for earthquakes, tsunamis, floods, etc. The lining normal pressure concrete tank was not provided with an explosion structure.

The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is a steel plate lining normal pressure having a concrete side wall for storing a dangerous liquid such as oil and a steel roof plate. Providing a steel plate-lined atmospheric concrete tank detonation structure that quickly releases pressure without damaging the upper edge of the concrete side wall and prevents the tank from exploding or collapsing when the pressure inside the concrete tank suddenly increases There is.

Ho爆structure of the steel plate lining atmospheric concrete tank according to the invention of claim 1, in the concrete side walls of the concrete deck slabs and bottom plate periphery cylindrical body shaped liquid-proof bank serves erected in integrated form structure, the bottom plate inner surface and inner surface of the side wall provided with a steel lining material liquid-tight structure, the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the side wall upper edge, the shingle , the outer peripheral edge by welding the connected structure in a ring plate which is arranged annularly on the side wall upper edge, and the ring plate is a structure that is anchored member embedded in the side wall upper edge, a predetermined or more the tank internal pressure, release of the steel plate lining atmospheric concrete tank structure in which the ring plate to open the tank pressure disengaged from the anchor member A structure,
The Ho爆structure comprises a stopper groove near the upper end of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a hook that internally provided with claws caught in the stopping groove, or greater than the predetermined wherein the at tank pressure a structure hook off the pawl from groove is detached.

The detonation structure of the steel sheet lining atmospheric concrete tank according to the invention of claim 2 is:
A concrete bottom slab and a cylindrical side wall that also serves as a liquid breakwater standing upright on the outer periphery of the bottom slab are integrally formed, and a liquid-tight steel plate lining material is provided on the inner surface of the bottom plate and the inner surface of the side wall, and the upper end of the side wall in the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the edge, the shingle has its outer peripheral edge to a ring plate which is arranged annularly on the side wall upper edge in welded connection structure, and the ring plate is fixed structure by anchoring member embedded in the side wall upper edge, by a predetermined amount or more in the tank internal pressure, the ring plate is a tank pressure disengaged from the anchor member An explosion structure of a steel lining atmospheric concrete tank with an open structure,
The Ho爆structure comprises a threaded hole in the top center of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a screwed into the screw hole, the set screw at a predetermined or higher tank pressure It is characterized by having a structure that can be removed.

Ho爆structure of the steel plate lining atmospheric concrete tank according to the invention of claim 1, in the concrete side walls of the concrete deck slabs and bottom plate periphery cylindrical body shaped liquid-proof bank serves erected in integrated form structure, the bottom plate inner surface and inner surface of the side wall provided with a steel lining material liquid-tight structure, the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the side wall upper edge, the shingle , the outer peripheral edge by welding the connected structure in a ring plate which is arranged annularly on the side wall upper edge, and the ring plate is a structure that is anchored member embedded in the side wall upper edge, a predetermined or more the tank internal pressure, release of the steel plate lining atmospheric concrete tank structure in which the ring plate to open the tank pressure disengaged from the anchor member A structure,
The Ho爆structure comprises a stopper groove near the upper end of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a hook that internally provided with claws caught in the stopping groove, or greater than the predetermined since the tank internal pressure is a structure hook off the pawl from groove is disengaged, when the pressure in the tank rises abnormally, the claw top moves upward together with the hook is disengaged ring plate disengaged from the groove The tank pressure can be released and the tank internal pressure can be relieved so as to open the lid by opening the vicinity of the joint between the upper edge of the side wall and the outer periphery of the roof plate and opening the lid reliably and quickly, thereby preventing the explosion of the tank and the collapse of the tank. The structure to which the hook is attached can be maintained and can be easily restored after the pressure is released.

The detonation structure of the steel sheet lining atmospheric concrete tank according to the invention of claim 2 is:
A concrete bottom slab and a cylindrical side wall that also serves as a liquid breakwater standing upright on the outer periphery of the bottom slab are integrally formed, and a liquid-tight steel plate lining material is provided on the inner surface of the bottom plate and the inner surface of the side wall, and the upper end of the side wall in the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the edge, the shingle has its outer peripheral edge to a ring plate which is arranged annularly on the side wall upper edge in welded connection structure, and the ring plate is fixed structure by anchoring member embedded in the side wall upper edge, by a predetermined amount or more in the tank internal pressure, the ring plate is a tank pressure disengaged from the anchor member An explosion structure of a steel lining atmospheric concrete tank with an open structure,
The Ho爆structure comprises a threaded hole in the top center of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a screwed into the screw hole, the set screw at a predetermined or higher tank pressure since a structure in which the exit, move by abnormal pressure in the tank upwardly with the ring plate missing the set screw opening in the outer peripheral edge of the roof plate, the collapse of the explosion and the tank of the tank by releasing the pressure in the tank Can be prevented.

It is a whole side explanatory view of a steel plate lining normal pressure concrete tank provided with the detonation structure concerning the present invention. It is side surface explanatory drawing which removed a part which shows the detonation structure of a 1st example. It is side surface explanatory drawing which removed a part which shows the explosion structure of a 2nd example. It is side surface explanatory drawing which abbreviate | omitted a part which shows the detonation structure of the 3rd example. It is explanatory drawing which shows the explosion structure of the prior art example 1. FIG. It is explanatory drawing which shows the explosion structure of the prior art example 2. It is explanatory drawing which shows the explosion structure of a comparative example.

  An embodiment of a steel plate-lined atmospheric concrete tank equipped with a detonation structure for storing a dangerous substance liquid such as petroleum according to the present invention will be described with reference to FIGS. The present invention is not limited only to the following embodiments. It goes without saying that changes (for example, omission or addition of components, changes in the shape of components, etc.) can be added to the following embodiments without departing from the gist of the present invention. In addition, the figure shows the outline, only a part is drawn and the detailed structure is abbreviate | omitted, and description of the code | symbol also abbreviate | omitted description partially.

FIG. 1 shows an overall side view of a steel plate-lined atmospheric concrete tank equipped with an explosion structure according to the present invention.
This steel plate lining normal pressure concrete tank 1 prevents buckling deformation of the tank side plate and prevents the tank from floating or flowing against disasters from outside the tank breakwater such as earthquakes, tsunamis, and floods. It is a tank that stores liquids of dangerous materials such as oil with a built-in structure.
This steel plate lining normal pressure concrete tank 1 is driven with a plurality of piles 2 into the ground, and a flat plate-shaped bottom plate 3 is placed on the piles 2, and a cylindrical liquid barrier bank side wall is provided around the bottom plate 3. This is a structure in which 4 is erected and integrated into the concrete structure . Further, it provided with a bottom liner 6 to the bottom plate 3 the inner surface, a liquid-tight structure with the side liner 7 to the side wall 4 inside surface. Further, a steel roof plate 5 that hermetically covers the upper part is connected to the upper end edge of the side wall 4.
The attached piping 9 is taken from the roof plate 5, and the petroleum stock solution 8 is discharged from the roof plate 5 by an oil discharging device, for example, a submerged pump 10 installed in the tank.
Further, the pipe 9 rising from the roof plate 5 is provided with an emergency shut-off valve 11 so that the stored liquid 8 does not flow out due to the siphon phenomenon.

For stock solution 8 is a dangerous substance such as petroleum, shingles 5 made of steel has a Ho爆structure 5A, so the explosion does not occur when the tank pressure increases, some of the roof plate 5 is open structure It is .
In this way, the steel roof covering the bottom of the concrete structure and the upper part of the side wall is provided with the detonation structure 5A that opens the vicinity of the joint between the upper edge of the side wall made of concrete and the outer periphery of the steel roof plate 5. When the pressure inside the tank has suddenly increased, the pressure inside the tank can be released quickly by opening the vicinity of the joint between the upper edge of the side wall and the outer periphery of the roof plate 5 without damaging the concrete part of the upper edge of the concrete side wall. As a result, the explosion and collapse of the tank can be prevented.

FIG. 2 is an explanatory side view in which a part of the detonation structure 5A according to the first embodiment is omitted.
The anchor member 13 has a structure in which the anchor member 13 is embedded and fixed at the upper end edge of the side wall 4 so as not to come off or rise, and is provided with a stop groove 14 in the vicinity of the upper end portion of the anchor member 13, and a hook in which a hook hooked in the stop groove 14 is provided . The ring plate 12 is fixed by mounting 16 . Further, above and below the ring plate 12, a structure interposing a washer 15 for holding the adhesion to the seal member 12a to ensure airtightness. The detonation structure 5A, which is buried and fixed so as not to be pulled out at the upper edge of the side wall, causes the hook 16 to disengage from the groove 14 in the upper part of the anchor member 13 due to the tank internal pressure P exceeding a predetermined level, and the hook 16 body disengages. with plate 12 moves upward a structure for opening the outer peripheral edge of the roof plate 5.

As described above, the detonation structure 5A is provided with the stop groove 14 in the vicinity of the upper end portion of the anchor member 13 and the hook 16 having a claw hooked in the stop groove 14 is mounted and the ring plate 12 is fixed. When the pressure P in the tank rises abnormally, as shown by the alternate long and short dash line in the figure, the claw is detached from the groove 14 and the hook 16 is detached and moves upward together with the ring plate 12 to open the upper part, so that it can be surely and quickly The tank internal pressure can be relieved so that the vicinity of the joint between the upper edge of the side wall and the outer periphery of the roof plate 5 is opened and the lid is opened, so that the explosion of the tank and the collapse of the tank can be prevented. Structure for attaching the hook 16 is restored after the pressure release can maintenance is easy.

FIG. 3 is an explanatory side view in which a part of the detonation structure of the second embodiment is omitted.
Anchoring member 13 is a structure in which embedded fixed to the side wall 4 the upper edge so as not float or missing, provided with a small-diameter portion 17 above the anchoring member 13, and a bolt groove 18 thereon. Further, a structure for fixing the ring plate 12 by mounting bolts 20 into the bolt groove 18. The ring plate 12 is structured to be hermetically fixed to a lower ring plate 12A embedded and fixed on the upper surface of the upper edge of the side wall with a sealant 12a and a washer 19 interposed.
Ho爆structure 5A is a predetermined or more tank internal pressure P, a structure for opening the outer peripheral edge of the roof plate 5 small diameter portion 17 is cut upward to move upward together with the ring plate 12 of the anchor member 13. The small-diameter portion 17 has a structure in which the strength is set in advance and is integrally formed with the lower anchor member 13 or connected by welding or the like.

  As shown by the broken lines in the figure, the narrow diameter portion 17 above the anchor member 13 is broken by the abnormal pressure P in the tank, and the ring plate 12, washer 19 and bolt 20 move upward, and the outer periphery of the roof plate 5. By opening the part and releasing the pressure in the tank, it is possible to prevent explosion of the tank and collapse of the tank.

FIG. 4 is an explanatory side view in which a part of the detonation structure of the third embodiment is omitted.
Anchoring member 13 is a structure in which embedded fixed to the side wall 4 the upper edge so as not float or missing, and a screw hole 21 in the top center of the anchor member 13. Further, a structure for fixing the ring plate 12 by mounting the set screw 23 into the screw hole 21. The ring plate 12 is structured to be airtightly fixed to a lower ring plate 12A embedded and fixed on the upper surface of the upper edge of the side wall with a sealant 12a and a washer 22 interposed.
Ho爆structure 5A is threaded missing corrupted the set screw 23 in a predetermined or more tank internal pressure P, a structure that moves upward together with the ring plate 12 to open the outer peripheral edge of the roof plate 5.

As shown by the broken line in the figure, the set screw 23 is pulled out by the abnormal pressure P in the tank and moves upward together with the ring plate 12 to open the outer peripheral edge of the roof plate 5, thereby releasing the pressure in the tank. Explosion and tank collapse can be prevented.

The above steel plate-lined atmospheric concrete tank detonation structure is applied to various atmospheric tanks that store liquids of dangerous materials such as petroleum, which are required to improve earthquake resistance, especially against tsunami from the outside. Prevent the tank from exploding or collapsing due to a sudden rise in pressure, and make it a safe tank.

1 tank
2 piles
3 bottom plate
4 side walls
5 roofing boards
5A detonation structure 6 bottom lining material
7 side lining material
8 stock solutions
9 piping
10 pumps
11 Emergency shut-off valve
12 ring plate
13 anchor member
14 stop groove
15 washer
16 hooks
17 small diameter part
18 bolt groove
19 washers
20 nuts
21 screw holes
22 washers
23 set screw

101 side plate
102 ring plate
103 anchor pin
104 Upper flange
105 roofboard
106 detonation board
107 plates
108 torso
109 fillet welding

Claims (2)

A concrete bottom slab and a cylindrical side wall that also serves as a liquid breakwater standing upright on the outer periphery of the bottom slab are integrally formed, and a liquid-tight steel plate lining material is provided on the inner surface of the bottom plate and the inner surface of the side wall, and the upper end of the side wall in the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the edge, the shingle has its outer peripheral edge to a ring plate which is arranged annularly on the side wall upper edge in welded connection structure, and the ring plate is fixed structure by anchoring member embedded in the side wall upper edge, by a predetermined amount or more in the tank internal pressure, the ring plate is a tank pressure disengaged from the anchor member An explosion structure of a steel lining atmospheric concrete tank with an open structure,
The Ho爆structure comprises a stopper groove near the upper end of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a hook that internally provided with claws caught in the stopping groove, or greater than the predetermined A structure for releasing a steel-lined normal pressure concrete tank, wherein the claw is detached from the groove with the internal pressure of the tank and the hook is detached. A concrete bottom slab and a cylindrical side wall that also serves as a liquid breakwater standing upright on the outer periphery of the bottom slab are integrally formed, and a liquid-tight steel plate lining material is provided on the inner surface of the bottom plate and the inner surface of the side wall, and the upper end of the side wall in the steel plate lining atmospheric concrete tank structure with a steel roof plate covering the upper portion connected to the edge, the shingle has its outer peripheral edge to a ring plate which is arranged annularly on the side wall upper edge in welded connection structure, and the ring plate is fixed structure by anchoring member embedded in the side wall upper edge, by a predetermined amount or more in the tank internal pressure, the ring plate is a tank pressure disengaged from the anchor member An explosion structure of a steel lining atmospheric concrete tank with an open structure,
The Ho爆structure comprises a threaded hole in the top center of the anchor member which is embedded in the side wall upper edge, in the structure for fixing the ring plate fitted with a screwed into the screw hole, the set screw at a predetermined or higher tank pressure Ho爆structure of the steel plate lining atmospheric concrete tank, which is a structure in which the exit.

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