KR101818983B1 - Method for constructing oil storage tank with oil leakage sensor and oil storage tank - Google Patents

Abstract

Disclosed is a construction method of an oil storage tank including an oil leakage sensor which comprises the steps of: (a) disposing inner and outer wall frames at intervals to correspond to an outer wall, and disposing a plurality of frames extending along a circumferential direction on an outer surface of the inner wall frame at vertical intervals; (b) pouring and curing concrete between the inner and outer wall frames, and separating the inner and outer wall frames, and the frames from the cured concrete to form the outer wall; and (c) disposing a leak sensor structure along a receiving groove formed on an inner surface of the outer wall by separating the frames, and welding a plurality of steel plates on the inner surface of the outer wall to each other to form an inner wall. In the step (a), a position at which the frames are disposed, is a position corresponding to at least one of a plurality of circumferential welding lines formed along the inner wall by welding the steel plates adjacent in a vertical direction to be connected with each other. The oil leakage sensor structure includes a perforated pipe disposed along the receiving groove and having a plurality of inflow holes in the step (c), and a leakage sensor cable disposed inside the perforated pipe. The inflow hole is formed in a direction toward the inner wall among the periphery of the perforated pipe. Accordingly, the generation of leakage is rapidly detected.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of constructing an oil storage tank,

The present invention relates to a construction method of a oil storage tank including a leakage sensor and a oil storage tank.

The oil storage tank includes an inner structure formed by welding a plurality of steel plates and a concrete outer structure surrounding the inner structure. However, in general, due to the difference in pressure occurring between the earth pressure and the oil outlet, it may cause deformation of the steel plate or cracking of the steel plate, resulting in leakage.

In addition, leakage may occur due to corrosion. Rapid erosion of the steel plate occurs in the oil storage tank after eight years after the oil storage tank is buried in the ground. Especially, the welded portion, which is welded by the high heat due to the iron plates being abutted against each other, There is a lot of leakage in the welding area between steel plates.

It is very important to detect leaks in oil storage tanks, since leaks can cause soil and water pollution. Accordingly, a leakage detecting device provided in an inclined perforation formed around the oil reservoir installed in the ground is disclosed in Korean Patent No. 10-1426781.

However, according to the disclosed leak detection apparatus, it is necessary to install a leak detection device as close as possible to a previously installed oil reservoir. However, since the proximity of the leak detection apparatus can not be established, It was difficult to install the oil leak detector, and the existing oil reservoirs and nearby facilities were damaged when installing the leak detector, and it was difficult to locate the oil reservoir already installed, and the proximity of the machine for installation of the leak detector was impossible There was a case.

It is an object of the present invention to provide a method of constructing a oil storage tank and a oil storage tank capable of promptly detecting occurrence of oil leakage and ascertaining a position where oil leakage has occurred.

According to a first aspect of the present invention, there is provided a method for constructing an oil storage tank, comprising the steps of: (a) arranging an inner wall mold and an outer wall mold so as to correspond to the outer wall, Disposing a plurality of frames extending in the circumferential direction on the outer surface of the inner wall frame at intervals in the vertical direction; (b) separating the inner wall frame, the outer wall frame and the frame from the cured concrete by placing and curing the concrete between the inner wall frame and the outer wall frame to form the outer wall; And (c) arranging the leak sensor structure along the receiving groove formed on the inner surface of the outer wall by separation of the frame, and welding the plurality of steel plates to each other on the inner surface of the outer wall to form the inner wall Wherein a position at which the frame is disposed in the step (a) corresponds to at least one of a plurality of circumferential weld lines formed along the circumference of the inner wall by welding together the vertically adjacent steel plates And the leakage sensor structure includes a leakage pipe disposed along the receiving groove in the step (c) and having a plurality of inlet holes and a leakage sensor cable disposed inside the pipe, May be formed in a direction of the periphery toward the inner wall.

The oil storage tank according to the second aspect of the present invention comprises: an inner wall including a plurality of steel plates welded to each other; A plurality of circumferential weld lines formed along the periphery of the inner wall by welding the steel plates adjacent to each other in the vertical direction, An outer wall on which a receiving groove is formed; And an oil leakage sensor structure disposed along a receiving groove formed on an inner surface of the outer wall, wherein the oil leakage sensor structure includes a oil hole formed along the receiving groove and having a plurality of inlet holes, and a leakage oil sensor disposed inside the oil hole, Cable, and the inflow hole may be formed in a direction of the periphery of the pipe toward the inner wall.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-mentioned problem solving means of the present invention, the leakage sensor structure is provided so as to correspond to the peripheral welding line, so that the leakage leakage occurring at the welding portion can be quickly detected. Further, the leakage sensor structure may be provided for each of the perimeter welding lines, so that the leaked portion can be grasped through the position of the leakage sensor structure that senses the leakage. According to the present invention, it is possible to perform quick maintenance and repair only in the area where the oil leakage occurs, so that the maintenance area can not be grasped and the maintenance area can be reduced in comparison with the conventional repairing area of the oil storage tank. , The operating costs of oil storage tanks operating for more than 30 years can be greatly reduced.

1 is a schematic conceptual perspective view of a oil storage tank constructed by a method of constructing a oil storage tank according to an embodiment of the present invention;
2 is a schematic cross-sectional view for explaining a first step of a method of constructing a oil storage tank according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view for explaining the placement and curing of concrete during the second step of the oil storage tank construction method according to one embodiment of the present invention.
4 is a schematic cross-sectional view of an outer wall formed by the second step of the method of constructing the oil storage tank according to one embodiment of the present application;
FIG. 5 is a schematic cross-sectional view illustrating a leakage sensor structure disposed along a receiving groove in a third step of the method of constructing the oil storage tank according to an embodiment of the present invention. FIG.
6 is a schematic cross-sectional view for explaining the formation of the inner wall during the third step of the method for constructing the oil storage tank according to the embodiment of the present invention.
7 is a schematic diagram for explaining that the leak sensor structure of the oil storage tank construction method according to one embodiment of the present invention is disposed relative to the circumferential welding line.
FIG. 8 is a schematic view of a leakage sensor structure of a method of constructing a oil storage tank according to an embodiment of the present invention; FIG.
FIG. 9 is a schematic conceptual view showing an inner surface of an outer wall in which a leakage sensor structure is disposed according to a construction method of a oil storage tank according to an embodiment of the present invention.
10 is an enlarged view of FIG. 6A.
FIG. 11 is a diagram exemplifying the specifications of the oil storage tank according to an embodiment of the present invention; FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In the description of the embodiments of the present invention, the term (upper side, lower side, etc.) related to the direction or position is set based on the arrangement state of each structure shown in the drawings. For example, as shown in Fig. 1, the 12 o'clock direction may be the upper side, and the 6 o'clock direction generally may be the lower side.

The present invention relates to a construction method of a oil storage tank and a oil storage tank.

First, a method of constructing the oil storage tank according to one embodiment of the present invention (hereinafter, referred to as a method of constructing the oil storage tank) will be described.

1 is a schematic conceptual perspective view of a oil storage tank constructed by a method of constructing a oil storage tank according to an embodiment of the present invention;

Referring to Figure 1, this method of constructing a oil storage tank is applied to construct a oil storage tank 1 having an outer wall 12 and an inner wall 11. The horizontal cross section of the portion of the oil storage tank 1 excluding the bottom surface 13, which is constructed by the oil storage tank construction method, may be a closed shape having a hollow portion, that is, a track shape. For example, the cross section in the horizontal direction of the portion of the oil storage tank 1 excluding the bottom surface 13, which is constructed by the oil storage tank construction method, may be an elliptical shape having a hollow portion, and a circular shape having a hollow portion. Alternatively, the cross section may be one of a polygonal shape having a hollow portion including a square having a hollow portion, a convex curved shape having a hollow portion, or the like.

The method of constructing the present oil storage tank may include forming a bottom surface (13). The step of forming the bottom surface 13 may form the bottom surface 13 by pouring concrete. Illustratively, when the oil storage tank 1 having a circular shape (donut shape) with a horizontal section in the horizontal direction of the portion excluding the bottom surface 13 is to be constructed, the step of forming the bottom surface 13 It is possible to perform the civil engineering work to form the bottom surface 13 having a circular cross section in the horizontal direction.

2 is a schematic cross-sectional view for explaining a first step of a method of constructing a oil storage tank according to an embodiment of the present invention;

2, the method for constructing the present oil storage tank includes arranging the inner wall mold 91 and the outer wall mold 92 so as to correspond to the outer wall 12 and arranging them on the outer surface of the inner wall mold 91, (First step) of arranging a plurality of frames 93 extending in the vertical direction with intervals therebetween.

The inner wall mold 91 and the outer wall mold 92 may be in a formwork. The specification (thickness, height, shape, etc.) of the outer wall 12 can be set in advance in the designing stage. The inner wall formwork 91 and the outer wall formwork 92 are placed in a space between them in a second step And the outer wall 12 formed by curing can have the predetermined specification. Illustratively, the inner wall mold 91 and the outer wall mold 92 may be spaced 300 mm to 400 mm apart to correspond to the thickness of the outer wall 12.

Further, the frame 93 may be disposed at a position corresponding to at least one of the plurality of circumferential welding lines 112 formed in the third step. This will be described in detail later.

FIG. 3 is a schematic cross-sectional view for explaining the concrete placement and curing in the second step of the oil storage tank construction method according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of the oil storage tank according to one embodiment of the present invention. Sectional view of the outer wall formed by the second step of the construction method.

3 and 4, the method for constructing the oil storage tank comprises the steps of casting and curing concrete between an inner wall mold 91 and an outer wall mold 92 to form an inner wall mold 91, an outer wall mold 92 And the frame 93 to form the outer wall 12 (the second step).

3, a portion of the space between the inner wall frame 91 and the outer wall frame 92 where the concrete is not poured can be formed by the frame 93, and referring to FIG. 4, May be formed into the receiving groove 121 which is depressed outwardly in the inner surface of the outer wall 12 after the frame 93 is separated. That is, the arrangement position of the frame 93 may be the forming position of the receiving groove 121.

As described below, the oil leakage sensor structure 14 may be disposed in the receiving groove 121. The frame 93 may thus have a cross-section that allows the leakage sensor structure 14 to be received therein so that the leakage sensor structure 14 can be placed in the receiving groove 121 formed by its arrangement . For example, the frame 93 may be a pipe having a rectangular (more specifically, square) cross section. Further, the thickness of the frame 93 may be larger than the diameter of the pipe tube 141. For example, when the diameter of the pipe tube 141 is 25 mm, the thickness of the frame 93 may be 30 mm.

FIG. 5 is a schematic cross-sectional view illustrating a leakage sensor structure disposed along a receiving groove in a third step of the method for constructing the oil storage tank according to an embodiment of the present invention. FIG. 6 is a cross- FIG. 7 is a schematic cross-sectional view for explaining the formation of the inner wall during the third step of the method of constructing the oil storage tank. FIG. 7 is a cross-sectional view of the oil storage structure of the oil storage tank according to the embodiment of the present invention, And Fig.

5 and 6, in the oil storage tank construction method, the leakage sensor structure 14 is disposed along the receiving groove 121 formed on the inner surface of the outer wall 12 by separation of the frame 93 , And forming a plurality of steel plates (111) on the inner surface of the outer wall (12) to form the inner wall (11) (third step).

In the third step, the steel plate 111 is adhered to the inner surface of the outer wall 12 as much as possible and can be welded to each other. 6, in the third step, the steel plates 111 adjacent in the vertical direction can be welded to each other. A circumferential weld line 112 may be formed along the circumference of the inner wall 11 by welding connection between the vertically adjacent steel plates 111. A plurality of circumferential welding lines 112 may be formed in the vertical direction. Further, the steel plates 111 adjacent in the circumferential direction can be welded to each other. Welding lines in the up-and-down direction can be formed by the welding connection between the adjacent steel plates 111 in the circumferential direction.

Illustratively, the steel plate 111 may be in the form of a rectangle. The iron plate 111 may be provided to have a curved surface corresponding to the shape of the inner wall body 11 to be formed.

6 and 7, in the above-described first step, the position where the frame 93 is disposed may be a position corresponding to at least one of the plurality of circumferential weld lines 112. [ The fact that the frame 93 is disposed at a position corresponding to the circumferential welding line 112 means that the frame 93 is disposed so that the receiving groove 121 is formed on the outer surface of the circumferential welding line 112 It can mean something.

Thus, the fact that the leak sensor structure 14 is disposed in the receiving groove 121 can mean that the leak sensor structure 14 is disposed on the outer surface of at least one of the plurality of circumferential weld lines 112, The leak sensor structure 14 may be provided between the outer wall 12 and the inner wall 11. [

Generally, the oil storage tank may leak at the weld between the steel plates. According to this oil storage tank construction method, the oil leakage sensor structure 14 may be disposed on the outer surface of the circumference welding line 112, Sensing of leaks occurring through line 112 may be facilitated by leakage sensor structure 14.

In addition, considering that the oil leakage generally moves (flows down) along the inner wall body 11, the leakage oil generated through the welding line in the up-down direction is eventually taken on the inner wall body 11 in the downward direction So that leakage can be effectively sensed through the welding line in the vertical direction.

FIG. 8 is a schematic conceptual view of a leakage sensor structure of a method of constructing a oil storage tank according to an embodiment of the present invention, and FIG. 9 is a schematic view of a structure of the oil leakage sensor structure according to an embodiment of the present invention Fig. 10 is an enlarged view of Fig. 6A. Fig.

8 and 9, the leak sensor structure 14 may include a pore tube 141 disposed along the receiving groove 121 in the third step and having a plurality of inlet holes 1411 formed therein. 8 and 9, the pipe tube 141 may be prepared by burying a plurality of inlet holes 1411 in the pipe along the longitudinal direction of the pipe. For reference, the perforation can be achieved by laser processing. In addition, the pipe may have a diameter of 22 mm.

8 to 10, the leak sensor structure 14 may include a leakage sensor cable 142 disposed inside the oil pipe 141. [

The inflow hole 1411 can allow the oil to flow into the oil pipe 141 so that the oil leakage comes into contact with the oil leak sensor cable 142 inside the oil pipe 141.

According to the present invention, the leakage sensor cable 142 is provided in the oil pipe 141 and detects leakage of oil flowing into the oil pipe 141 through the oil inlet hole 1411, thereby more reliable leakage detection can be performed.

In addition, the inflow hole 1411 can be formed to facilitate the inflow of the oil leakage into the oil pipe 141.

For example, referring to FIG. 10, the inlet holes 1411 may be formed in the direction toward the inner wall 11 in the periphery of the pipe tube 141. Generally, it is preferable that the inflow hole 1411 is formed in a direction toward the inner wall 11 in order to facilitate the inflow of the oil into the oil pipe 141, considering that oil is generated from the inner wall 11 . According to this, the oil flowing out through the welding line in the up-and-down direction and moving along the inner wall body 11 in the downward direction can also easily flow into the inlet hole 1411 formed in the direction toward the inner wall body 11 It will be possible. 10, the direction in which the pipe wall 141 faces the inner wall body 11 in the horizontal direction is the same as the direction in which the pipe wall 141 faces the inner wall body 11 in an upward and downward direction 11) to the user.

Further, for example, the distance between the inlet holes 1411 may be 40 mm to 60 mm, and preferably 50 mm. In addition, the inlet hole 1411 may have a diameter of 3 mm to 5 mm, and preferably a diameter of 4 mm.

The fact that the leak sensor structure 14 is disposed along the receiving groove 121 in the third step means that the oil hole 141 in which the leak sensor cable 142 is disposed is disposed in the receiving groove 121 Or that the leak sensor cable 142 is disposed inside the oil pipe 141 after the oil pipe 141 is disposed in the receiving groove 121. [

In the third step, the inner wall 11 can be formed after completion of the arrangement of the leak sensor structures 14 with respect to the entire plurality of receiving recesses 121. [ Alternatively, in the third step, the arrangement of the leak sensor structure 14 with respect to the receiving groove 121 and the formation of the inner wall 11 can be performed in parallel. For example, the leakage sensor structure 14 can be sequentially disposed in the plurality of receiving recesses 121. A portion of the inner wall body 11 can be disposed with respect to the receiving recess 121 in which the arrangement of the leak sensor structure 14 is completed. The leakage sensor structure 14 may be disposed in the other receiving groove 121 and the other receiving groove 121 in which the leakage sensor structure 14 is disposed may be formed in the other of the inner walls 11 A portion may be formed.

According to the oil storage tank construction method, the oil leakage sensor cable 142 can be prevented from being damaged during welding between the steel plates 111. For example, when the leakage sensor cable 142 is disposed in the receiving groove 121 without the hole 141, welding heat is transmitted to the leakage sensor cable 142 at the time of welding between the steel plates 111 The leak sensor cable 142 may be damaged. However, according to the oil storage tank construction method, the oil leakage sensor cable 142 is disposed in the receiving groove 121 with the oil leakage sensor cable 142 disposed in the oil hole 141, Welding can be performed between the steel plate 111 and the steel plate 111 for forming the inner wall body 11 with respect to the inner wall member 121, so that damage caused by welding of the leakage sensor cable 142 can be prevented.

In the third step, the leak sensor cable 142 is tightened by a tension force (for example, the inner surface of the portion of the pipe tube 141 facing the inner wall body 11 is tightened by the leak sensor cable 142 (Introduced) state in which a predetermined tension force is exerted on the leak sensor cable 142 so that the leak sensor cable 142 is positioned in the oil pipe 141. For example, a tension force may be applied to the oil leakage sensor cable 142 after the oil pipe 141 having the oil leakage sensor cable 142 is disposed in the receiving groove 121. Alternatively, after the oil pipe 141 is disposed in the receiving groove 121, the oil leak sensor cable 142 is disposed in the oil pipe 141, and the oil leak sensor cable 142 disposed in the oil pipe 141 is subjected to a tensile force have.

The tensile force on the leak sensor cable 142 can be externally applied. For example, a cut portion may be formed in the oil pipe 141 to allow the external force exerting portion to contact or grip one or more of the one end and the other end of the oil leak sensor cable 142 provided in the oil pipe 141, The external external force acting portion can apply a tensile force by contacting or gripping at least one of the one end and the other end of the leakage oil sensor cable 142.

10, the leakage sensor cable 141 can be disposed closer to the inlet hole 1411 than when it is in the untensioned state. Accordingly, the leakage sensor cable 142 can be provided at a place where it can be brought into contact with the oil flowing into the oil pipe 141 of the oil pipe 141 as quickly as possible, so that the time for detecting the oil leakage can be effectively shortened . Illustratively, the leak sensor cable 142 is configured such that a predetermined tension (the leak sensor cable 142 is not broken, but the leak sensor cable 142 is located closest to the inlet hole 1411 in the interior of the oil pipe 141 And can be fixedly arranged in a pulled state.

For reference, the introduction of the tensional force to the leakage sensor cable 142 can be performed after the formation of the peripheral welding line 112 corresponding to the receiving groove 121 in which the arrangement of the leakage sensor structure 14 is completed. Preferably, when the temperature of the circumferential welding line 112 formed after the formation of the circumferential welding line 112 corresponding to the receiving groove 121 in which the arrangement of the leak sensor structure 14 is completed is lower than a predetermined temperature, Lt; / RTI > Thus, in the tensioned state, the influence of welding heat on the inflow hole 1411, that is, the oil leakage sensor cable 142 disposed close to the circumferential welding line 112, can be minimized. Considering that the third step can be performed in parallel with the arrangement of the leak sensor structure 14 and the formation of the inner wall 11 with respect to the receiving groove 121 as described above, May be combined with the formation of the circumferential weld line 112 corresponding to the receiving groove 121 in which the other leak sensor cable 142 is disposed.

In the present oil storage tank construction method, the leak sensor structure 14 may be disposed on the outer surface of one or more of the plurality of circumferential weld lines 112, thereby forming the circumferential weld line 112 Leakage can be easily detected by the leak sensor structure 14. [0035]

Also, according to the oil storage tank construction method, the oil storage tank 1 can be constructed so that the leakage point can be easily grasped. Illustratively, the leakage point can be easily estimated according to the position of the leakage sensor structure 14 that senses the leakage. In addition, the leaking point can be easily grasped according to the position of the leaked portion in the circumferential direction of the leaky oil sensor cable 142.

For example, if leakage occurs in one of the circumferential weld lines 112 of the plurality of circumferential weld lines 112, it is preferable that a plurality of the plurality of the leak sensor structures 14 arranged for each of the plurality of circumferential weld lines 112 It can be estimated that leakage occurred in the one perimeter welding line 112 due to the position of the leak sensor structure 14 which senses the leakage. Further, depending on the position of the portion where the leakage of the leak sensor cable 142 is detected in the circumferential direction, the leakage of the leaked oil may occur in any portion of the circumferential direction of the one circumferential welding line 112, Can also be detected.

In addition, in general, the leakage oil can be moved downward substantially vertically along the outer surface of the inner wall 11 after the occurrence of the oil leakage. Accordingly, when oil leakage occurs in the upward and downward welding line, And can be brought into contact with and leaking to the leak sensor cable (142) during traveling. Accordingly, the leakage can be detected, and the welding line in the up-and-down direction located in the upper portion of the leaked portion in the circumferential direction of the leak sensor cable 142 can be estimated as the leakage occurrence position.

For reference, it is preferable that the leakage sensor structure 14 is provided in each of the plurality of circumferential welding lines 112 for estimating the leakage occurrence position as described above.

Generally, an underground oil storage tank generally includes an inner wall formed by welding an iron plate having a size of 182.9 cm x 609.6 cm in conformity with the specification of the inner wall of the oil storage tank. In the past, The oil storage tank was often repaired by re-welding the entire body or replacing the steel plate.

On the other hand, the present oil storage tank construction method is generally applied to the outer surface of one or more of the plurality of circumferential welding lines 112 by circumferential welding, for example, in view of the fact that the oil leakage is generated at the welding site, The leakage sensor structure 14 is provided so as to be in line with the line 112 so that the position of the leakage sensor structure 14 that senses the leakage quickly and the position of the leak sensor cable 142 in the circumferential direction It is possible to easily and accurately grasp the leakage occurrence position through the position of the portion where the leakage is detected. As a result, it is possible to perform quick maintenance and to repair the leaking area only, so that the leaking area can not be grasped and the repairing cost can be reduced compared to the conventional method of repairing the entire area of the oil storage tank.

For reference, the method of constructing the oil storage tank may include the step of installing a three-dimensional monitoring system for indicating the leakage position. For example, the three-dimensional monitoring system can display the welding portion between the steel plates 111 and the leakage sensor structure 14 on the display unit by scaling down to fit the size of the display portion, The leakage position estimated by the sensor structure 14 can be displayed on the display unit.

As described above, according to the present oil storage tank construction method, the leakage sensor structure 14 is disposed in contact with the welded portion between the steel plates 111 of the oil storage tank 1 newly installed and installed, The oil storage tank can be realized which can accurately detect the leakage position and inform the manager. As a result, it is possible to perform rapid repairing and to repair only the oil leakage part, so that the maintenance cost can be reduced compared to the conventional repairing of the entire inner wall body 11, Water pollution can be prevented in advance.

In other words, according to this oil storage tank construction method, it is possible to quickly detect the occurrence of oil leakage and the occurrence position of oil leakage under any circumstances, thereby alerting the manager to prevent secondary damage, and operating the oil storage tank for 30 years or more The oil storage tank construction method can be implemented.

The leakage sensor structure 14 may include a cushion member disposed between the inner surface of the receiving groove 121 and the leakage sensor structure 14. [ The cushioning member can exert an external force on the leakage sensor structure 14 in the direction toward the inner wall body 11. [ Illustratively, the leakage sensor structure 14 may be disposed in the receiving groove 121 in which the cushion member is provided in the receiving groove 121, prior to the arrangement of the iron plate 111. At this time, the leakage sensor structure 14 can be arranged to protrude from the receiving groove 121 by the cushion member. The steel plate 111 may be arranged such that the leakage sensor structure 14 is received in the receiving groove 121 and exerts an external force in the outward direction on the leakage sensor structure 14 have. The cushioning member can be compressed by the external force acting at this time and the compressed cushioning member can act against the leakage sensor structure 14 to cause the leakage sensor structure 14 to come into close contact with the iron plate 111 . Thus, the leakage detection efficiency can be improved. For reference, the cushioning member may have a thickness and an elastic force capable of protruding the leakage sensor structure 14 from the receiving groove 121 at the time of non-compression (before the arrangement of the steel plates 111).

Also, the leak sensor structure 14 may include an adsorbent layer surrounding the perforated tube 141. The absorption layer absorbs leakage oil, thereby preventing leakage of oil leakage. Further, the absorbed leaking oil in the adsorption layer can be propagated along the circumferential direction of the adsorption layer and guided to the inflow hole 1411. That is, the adsorption layer exhibits a primary effect of preventing leakage of leaking oil by absorbing leaking oil, and guiding the leaking leaking oil to the inflow hole 1411 prevents the leaking oil from flowing into the inflow hole 1411 So that a minute amount of leakage can be introduced into the inflow hole 1411, so that reliable leakage detection can be performed.

FIG. 11 is a diagram exemplifying the specifications of the oil storage tank according to an embodiment of the present invention; FIG. Referring to FIG. 11, the steel plate 111 may include JIS-SM490B material. In the inner wall 11, a plurality of steel plates 111 may be arranged in four rows in the vertical direction. In addition, each of the four rows may include eight steel plates 111. According to this, the inner wall 11 may include 32 steel plates 111. Further, the thickness of the steel plate 111 may be 10 mm. The width of the steel plate 111 in the circumferential direction may be different for each portion constituting the inner wall 11. For example, the width of the circumferential portion of some steel plates 111 may be 6096 mm. The width of the other steel plates 111 in the circumferential direction may be 5486 mm. The height of the steel plate 111 in the vertical direction may be 1829 mm. In addition, the height of the inner wall 11 may be 7316 mm, and the outer diameter of the inner wall 11 may be 19050 mm. In addition, the length of the leak sensor cable 142 may be 400 m. Also, an indoor / outdoor leak detection sensor cable (for example, TT-5000) may be used as the leak sensor cable 142. It should be noted, however, that the specification of the disclosed composition is exemplary only, and in practical applications, the specification of the composition is not limited to what is described herein.

The leakage sensor structure 14 may also include a ferry disposed within the tubular conduit 141 to guide movement of the leak sensor cable 142 into the tubular conduit 141 for entry. In other words, the ferry may be a line that runs through the leak sensor cable 142. The front end of the leakage sensor cable 142 can be connected to the rear end of the ferry and the ferry introduced into the pipe pipe 141 moves along the longitudinal direction of the pipe pipe 141 inside the pipe pipe 141 The leak sensor cable 142 connected to the rear end of the ferry can be moved along the longitudinal direction of the ferry and can be extended in the longitudinal direction inside the pipe pipe 141 by being pulled out of the pipe pipe 141.

Illustratively, when the leak sensor cable 142 is disposed in the oil pipe 141 after the oil pipe 141 is disposed in the receiving groove 121 in the third step, the oil leak sensor cable 142 is connected to the oil pipe 141). Further, a ferry can be used for reinstalling and repairing the leak sensor cable 142. For this purpose, a ferry may be provided inside the oil pipe 141 even after the oil leak sensor cable 142 is disposed.

In addition, the present disclosure can provide a method of constructing the oil storage tank according to another embodiment. Each step of the method for constructing the oil storage tank according to another embodiment of the present invention may be similar to or similar to each step of the above-described oil storage tank construction method, and therefore, brief description will be given.

The method of constructing the oil storage tank according to another embodiment of the present application comprises the steps of forming a bottom surface 13, forming an inner wall 11 based on the bottom surface 13, Placing the leak sensing structure 14 against at least a portion of the welded area between the steel plates 111 of the inner wall 11, such as the perimeter weld line 112, To form a second layer.

For example, the method of constructing the oil storage tank according to another embodiment of the present disclosure may include placing and curing concrete so that the bottom surface 13 is formed. Thereafter, a plurality of steel plates 111 may be welded (for example, by butt welding) so that the inner wall 11 is formed on the basis of the bottom surface 13. Thereafter, the formed inner wall body 111 can be subjected to a water tightness test. The leak sensing structure 14 can then be placed on the outer surface of one or more of the plurality of perimeter weld lines 112 of the inner wall 11. Thereafter, to form the outer wall 12, a plurality of steel plates 111 connected to each other, that is, the outside of the inner wall 11, a mold (the inner wall frame 91, A mold 92 or the like) can be formed, and concrete can be placed thereafter.

Considering that the concrete is poured for the formation of the outer wall 11 after the oil leak detection structure 14 is disposed in the oil storage tank construction method according to another embodiment of the present invention, The leakage sensor structure 14 may include a protective layer surrounding the outer surface of the pipe tube 14 so that the inlet hole 1411 of the leakage sensor structure 1411 is prevented from being clogged by the concrete poured after the leakage sensor structure 14 is disposed. The protective layer may be a material that is spontaneously decomposed to prevent the inflow hole 1411 from being closed by the concrete when the outer wall 12 is formed and after the outer wall 12 is formed (specifically, after concrete curing) So that the inflow hole 1411 can be opened to the outside. For example, the protective layer may be a material that has a plastic or similar function that rotates after a certain period of time.

In addition, the present invention can provide a oil storage tank (hereinafter referred to as "the present oil storage tank") 1 constructed by the above-described oil storage tank construction method. In the following description related to the present oil storage tank 1, the same reference numerals are used for the same or similar components as those described in the construction method of the present oil storage tank, and the same reference numerals are used for the explanation. .

The oil storage tank (1) includes an inner wall (11) including a plurality of steel plates (111) welded to each other.

The oil storage tank 1 is made of a material including concrete and is disposed so as to surround the inner wall 11 and welded to the inner wall 11 by welding the adjacent steel plates 111 in the vertical direction, And an outer wall 12 in which receiving grooves 121 are formed at positions on the inner surface corresponding to at least one of the plurality of circumferential welding lines 112 formed along the outer circumferential surface of the outer wall 12.

The present oil storage tank 1 also includes a leakage sensor structure 14 disposed along a receiving groove 121 formed in the inner surface of the outer wall 12. The leakage sensor structure 14 includes a leak pipe 141 disposed along the receiving groove 121 and formed with a plurality of inlet holes 1411 and a leak sensor cable 142 disposed inside the pipe pipe 141. The inlet hole 1411 may be formed in the direction toward the inner wall 11 in the periphery of the pipe tube 141.

Also, the leakage sensor cable 142 can be disposed inside the pipe tube 141 in a tensioned state pulled by a tensile force. The leakage sensor cable 142 can be disposed closer to the inlet hole 1411 than in the non-tension state.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

1: Oil storage tank
11: Inner wall
111: steel plate
112: circumferential weld line
12: outer wall
121: receiving groove
13: bottom surface
14: Leak sensor structure
141:
1411: inlet hole
142: Leak sensor cable
91: Wall molding
92: Outer wall mold
93: frame

Claims (5)

A method of constructing an oil storage tank having an outer wall and an inner wall,
(a) disposing an inner wall frame and an outer wall frame so as to correspond to the outer wall, and arranging a plurality of frames extending in the circumferential direction on the outer surface of the inner wall frame at intervals in the vertical direction;
(b) separating the inner wall frame, the outer wall frame and the frame from the cured concrete by placing and curing the concrete between the inner wall frame and the outer wall frame to form the outer wall; And
(c) disposing the leakage sensor structure along the receiving groove formed in the inner surface of the outer wall by separation of the frame, and then welding the plurality of steel plates on the inner surface of the outer wall to form the inner wall , ≪ / RTI &
In the step (a), the frame is disposed at a position corresponding to at least one of a plurality of circumferential weld lines formed along the periphery of the inner wall by welding the adjacent steel plates in the vertical direction,
Wherein the leakage sensor structure includes a leak pipe disposed along the receiving groove in the step (c) and having a plurality of inlet holes and a leak sensor cable disposed inside the pipe,
Wherein the inflow hole is formed in a direction toward the inner wall of the perforated pipe,
Wherein the leakage sensor structure includes a ferry line disposed along the longitudinal direction of the oil pipe inside the oil pipe to guide movement of the oil leak sensor cable into the oil pipe,
Wherein the leakage sensor cable is extended in the longitudinal direction inside the pipe as the ferry is moved along the longitudinal direction of the pipe while the ferry is connected to the ferry,
In the step (c), the leakage sensor cable is pulled by a tensile force and is disposed inside the pipe tube in a tension state in which a predetermined tension force is introduced,
Wherein the leakage sensor cable is disposed closer to the inflow hole than when it is in the untensioned state. delete delete In the oil storage tank,
An inner wall including a plurality of steel plates welded to each other;
A plurality of circumferential weld lines formed along the periphery of the inner wall by welding the steel plates adjacent to each other in the vertical direction, An outer wall on which a receiving groove is formed; And
And a leakage sensor structure disposed along a receiving groove formed on an inner surface of the outer wall,
Wherein the leak sensor structure includes a leak pipe disposed along the receiving groove and having a plurality of inlet holes and a leak sensor cable disposed inside the pipe,
Wherein the inflow hole is formed in a direction toward the inner wall of the perforated pipe,
Wherein the leakage sensor structure includes a ferry line disposed along the longitudinal direction of the oil pipe inside the oil pipe to guide movement of the oil leak sensor cable into the oil pipe,
Wherein the leakage sensor cable is extended in the longitudinal direction inside the pipe as the ferry is moved along the longitudinal direction of the pipe while the ferry is connected to the ferry,
Wherein the leakage sensor cable is pulled by a tensile force and is disposed inside the pipe tube in a tension state in which a predetermined tension force is introduced,
The oil leakage sensor cable being disposed closer to the inflow hole than in the untensioned state due to the tension condition. delete

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