Water retaining device of buried storage tank

Abstract

The utility model relates to the technical field of underground storage tank protection, and particularly discloses a water retaining device of an underground storage tank, which comprises a tank body, edge covering angle steel and a water retaining plate, the tank body is mounted in a concrete pit, the upper part of the tank body is exposed out of the upper surface of the concrete pit, the tank body comprises a tank top and a tank wall, the tank top is welded above the tank wall, and the periphery of the tank top extends out of the tank wall. The edge covering angle steel is arranged on the outer side of the tank wall, the upper end face of the edge covering angle steel abuts against the tank top, the edge covering angle steel is welded to the tank top and the tank wall, the water baffle is detachably installed below the edge covering angle steel to prevent water accumulation on the upper surface of the edge covering angle steel, the water baffle surrounds the periphery of the outer side of the tank wall, and the side, away from the edge covering angle steel, of the water baffle obliquely extends to the position above a concrete pit. Rainwater or process water is effectively prevented from entering a concrete pit to generate external pressure on the tank wall, deformation and instability of the buried storage tank can be prevented, external pressure formed by water or sandy soil on the periphery of the tank body can be prevented, the wall thickness of the tank body can be reduced, a reinforcing ring does not need to be additionally arranged on the outer wall of the tank body, and the manufacturing cost of equipment can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of buried storage tank protection, in particular to a water blocking device of buried storage tank. BACKGROUND

[0002] In chemical equipment design, buried storage tank is often used, compared with general ground tank, buried storage tank bears not only medium internal pressure and material mass, but also underground soil pressure, underground water buoyancy and soil corrosion, therefore, in the design process, in addition to following the design specification of general ground tank, stability calculation and anti-buoyancy calculation of buried storage tank are also needed.

[0003] Buried storage tank is divided into two cases: first, concrete and tank wall are closely combined, tank wall is equivalent to the inner wall of concrete pool, at this time, the requirement for tank is not high, except considering certain corrosion, it is the same as general storage tank design mode; second, concrete and tank wall are not closely combined, buried storage tank is installed in concrete pit or sand pit, then the water storage or sand in pit will produce certain buoyancy and external pressure, in engineering design, the latter needs to consider external pressure and buoyancy; when the storage tank is in normal working state, the force of sand and underground water acting on the tank offsets part of axial stress and ring stress, the force acting on buried storage tank is balanced, when the storage tank is in empty tank state, the external pressure of sand around buried storage tank and the upward buoyancy and external pressure of underground water are unbalanced, so stability check and calculation are also needed.

[0004] When stability check calculation is carried out, whether to set reinforcing ring and the number, material and specification of reinforcing ring are determined according to allowable external pressure and design external pressure of buried storage tank; when anti-buoyancy calculation is carried out, the volume and weight of empty tank of buried storage tank are determined, the size of buoyancy is calculated according to the formula, and the number and size of foundation bolts are determined according to the buoyancy, which can effectively prevent safety accidents caused by floating of buried storage tank; water will accumulate around existing buried storage tank, which will exert buoyancy and pressure on buried storage tank, therefore, water blocking device needs to be set to prevent water from entering around buried storage tank and prevent water accumulation around buried storage tank. UTILITY MODEL CONTENTS

[0005] In view of the defects of prior art, the utility model solves the technical problem of providing a water blocking device of buried storage tank, and solves the problem of water accumulation around existing buried storage tank.

[0006] To solve the above problems, the technical scheme adopted by the utility model is: a water blocking device of a buried storage tank, which comprises a tank body, a covered angle steel and a water blocking plate, the tank body is installed in a concrete pit, the upper part of the tank body is exposed above the upper surface of the concrete pit, the tank body comprises a top filling and a tank wall, the top filling is welded above the tank wall, the top filling extends around the tank wall, the covered angle steel is arranged outside the tank wall, the upper end surface of the covered angle steel abuts against the top filling, the covered angle steel is welded with the top filling and the tank wall, the water blocking plate is detachably installed below the covered angle steel, the water blocking plate surrounds the outside of the tank wall, and the water blocking plate extends obliquely away from the covered angle steel to above the concrete pit.

[0007] The beneficial effects of the scheme are: compared with the prior art, the water blocking device of the buried storage tank of the utility model, by arranging the covered angle steel and the water blocking plate, the water blocking plate is detachably installed below the covered angle steel, which effectively prevents rainwater or process water from entering the concrete pit to generate external pressure on the tank wall, and prevents the deformation and instability of the buried storage tank.

[0008] Further, the covered angle steel surrounds the tank wall, the installation height of the covered angle steel is higher than the upper surface of the concrete, the water blocking plate is installed while effectively preventing water from entering the concrete pit, and the covered angle steel is provided with mounting holes for installing the water blocking plate.

[0009] Further, the top filling is arc-shaped, when rainwater or process sewage falls on the top filling, it can flow downward along the periphery of the top filling and will not stay on the top filling.

[0010] Further, the water blocking plate is installed below the covered angle steel through bolts, nuts and gaskets, the nuts are welded on the water blocking plate, the gaskets are installed between the covered angle steel and the water blocking plate, the bolts are connected with the nuts by penetrating the mounting holes on the covered angle steel and the water blocking plate, and the water blocking plate is convenient to disassemble and maintain.

[0011] Further, the water blocking plate is arranged in a block structure and is combined into a ring-shaped water blocking plate by a plurality of plates, is convenient to carry and disassemble and maintain. DRAWINGS

[0012] Figure 1 It is a sectional view of the utility model;

[0013] Figure 2 It is Figure 1 the enlarged schematic view of A;

[0014] In the drawing: 1-tank body, 2-covered angle steel, 3-water blocking plate, 4-concrete pit, 5-bolt, 6-nut, 7-gasket,

[0015] 11-top filling, 12-tank wall. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0017] The embodiments are shown in the accompanying drawings as follows: Figures 1 to 2 The water retaining device of the buried storage tank comprises a tank body 1, a covered angle steel 2 and a water retaining plate 3. The tank body 1 is installed in a concrete pit 4. The tank body 1 is partially exposed above the upper surface of the concrete pit 4. The tank body 1 comprises a top filling 11 and a tank wall 12. The top filling 11 is welded above the tank wall 12. The top filling 11 extends around the tank wall 12. The covered angle steel 2 is arranged outside the tank wall 12. The upper end surface of the covered angle steel 2 abuts against the top filling 11. The covered angle steel 2 is welded with the top filling 11 and the tank wall 12. The water retaining plate 3 is detachably installed below the covered angle steel 2 to prevent water accumulation on the upper surface of the covered angle steel 2. The water retaining plate 3 surrounds the tank wall 12. The water retaining plate 3 is inclined to extend to above the concrete pit 4 away from the covered angle steel 2, thereby effectively preventing rainwater from entering the concrete pit 4 to form water accumulation and generate external pressure on the tank wall 12.

[0018] The covered angle steel 2 surrounds the tank wall 12. The installation height of the covered angle steel 2 is higher than the upper surface of the concrete. The covered angle steel 2 is used for installing the water retaining plate 3 and effectively prevents water from entering the concrete pit 4. The covered angle steel 2 is provided with installation holes for installing the water retaining plate 3. The top filling 11 is arc-shaped. When rainwater or process wastewater falls on the top filling 11, the rainwater or process wastewater can flow downward along the periphery of the top filling 11 and cannot stay on the top filling 11. The water retaining plate 3 is installed below the covered angle steel 2 through bolts 5, nuts 6 and gaskets 7. The nuts 6 are welded on the water retaining plate 3. The gaskets 7 are installed between the covered angle steel 2 and the water retaining plate 3. The bolts 5 pass through the installation holes on the covered angle steel 2 and the water retaining plate 3 and are connected with the nuts 6, thereby facilitating disassembly and maintenance. The water retaining plate 3 is arranged in blocks. The water retaining plate 3 is combined by multiple plates to form a ring-shaped water retaining plate 3. The water retaining plate 3 is light to carry and facilitates disassembly and maintenance.

[0019] The specific implementation process is as follows:

[0020] The covered angle steel 2 is arranged on the part of the buried storage tank exposed above the upper surface of the concrete pit 4. The water retaining plate 3 is installed below the covered angle steel 2. The water retaining plate 3 is inclined downward, thereby effectively preventing water from entering the concrete pit 4 and preventing water accumulation around the buried storage tank. The sand soil is not backfilled around the tank body 1. The tank body 1 can be backfilled with fireproof cotton with light weight. The tank body 1 is not subjected to external pressure formed by water or sand soil. The buried storage tank is designed in the same way as general storage tanks. The wall thickness of the tank body 1 can be reduced. The outer wall of the tank body 1 can not be provided with a reinforcing ring. The manufacturing cost of the equipment is reduced, and the economic benefits are improved.

[0021] The above is only the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A water retaining device for a buried storage tank, characterized by: The tank body is installed in the concrete pit, and the upper part of the tank body is exposed above the upper surface of the concrete pit, the tank body comprises a roof and a tank wall, the roof is welded above the tank wall, the roof extends around the tank wall, the edge angle steel is arranged outside the tank wall, the upper end surface of the edge angle steel abuts against the roof, the edge angle steel is welded with the roof and the tank wall, the water baffle is detachably installed below the edge angle steel, the water baffle surrounds the tank wall, and the side of the water baffle away from the edge angle steel extends obliquely above the concrete pit.

2. The water blocking device for a buried storage tank according to claim 1, characterized by: The edge angle steel surrounds the tank wall, the installation height of the edge angle steel is higher than the upper surface of the concrete, and the edge angle steel is provided with an installation hole.

3. The water blocking device for a buried storage tank according to claim 1, characterized by: The roof is arc-shaped.

4. The water blocking device for a buried storage tank according to claim 1, characterized by: The water baffle is installed below the edge angle steel through bolts, nuts and gaskets, the nuts are welded on the water baffle, the gaskets are installed between the edge angle steel and the water baffle, and the bolts pass through the installation holes of the edge angle steel and the water baffle and are connected with the nuts.

5. The water blocking device for a buried storage tank according to claim 1, characterized by: The water baffle is arranged in a block structure and is combined by a plurality of plates into a ring-shaped water baffle.

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