KR20130076340A - Strength test apparatus of insulation box for cargo containment - Google Patents

Strength test apparatus of insulation box for cargo containment Download PDF

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Publication number
KR20130076340A
KR20130076340A KR1020110144896A KR20110144896A KR20130076340A KR 20130076340 A KR20130076340 A KR 20130076340A KR 1020110144896 A KR1020110144896 A KR 1020110144896A KR 20110144896 A KR20110144896 A KR 20110144896A KR 20130076340 A KR20130076340 A KR 20130076340A
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KR
South Korea
Prior art keywords
box
chamber body
strength test
insulation box
cover
Prior art date
Application number
KR1020110144896A
Other languages
Korean (ko)
Inventor
곽태옥
박성우
김성엽
조기조
Original Assignee
대우조선해양 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020110144896A priority Critical patent/KR20130076340A/en
Publication of KR20130076340A publication Critical patent/KR20130076340A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic means

Abstract

Disclosed are a strength test apparatus and a method of an insulation box for cargo hold. Strength test apparatus of the insulation box for cargo hold of the present invention, the chamber body in which the insulation box which is the strength test target is accommodated therein; A cover detachably coupled to the chamber body; And a pressurizing member disposed between the chamber body and the cover and configured to pressurize an upper surface of the insulating box by expanding and contracting an area corresponding to the upper surface of the insulating box by the pressure fluid supplied through the cover.

Description

Strength test apparatus and method of insulation box for cargo hold {STRENGTH TEST APPARATUS OF INSULATION BOX FOR CARGO CONTAINMENT}

The present invention relates to an apparatus and a method for testing the strength of an insulation box for cargo hold, and more particularly, for a cargo hold arranged between an inner wall of the hull and a storage tank in which liquefied natural gas (LNG) is stored. The present invention relates to a strength test apparatus and a method of an insulation box.

In general, natural gas is transported in the form of gas through land or sea gas pipelines, or stored in a LNG carrier in the form of liquefied natural gas (hereinafter referred to as "LNG"), Lt; / RTI >

Such LNG is obtained by cooling natural gas to a cryogenic temperature, for example, approximately -163 DEG C, and its volume is reduced to about 1/600 of that of natural gas in a gaseous state, so that it is suitable for long distance transportation through the sea.

These LNGs are transported through LNG transporting vessels, transported through the sea, unloaded to landfill sites, carried on LNG RV (LNG Regasification Vessel), transported through the sea, reached to land requirements, recharged and unloaded as natural gas LNG carriers and LNG RVs are equipped with LNG storage tanks (also called "cargo holds") that can withstand the extreme temperatures of LNG.

In addition, demand for floating floating structures such as LNG FPSO (Floating Production Storage and Offloading) and LNG FSRU (Floating Storage and Regasification Unit) is increasing, and these floating structures are installed in LNG carriers or LNG RVs LNG storage tanks are included.

Here, LNG FPSO is a floating marine structure that is used to directly liquefy natural gas produced from the sea and store it in a storage tank, and to transfer LNG stored in a storage tank to an LNG transport if necessary.

In addition, the LNG FSRU is a floating type of offshore structure that stores LNG unloaded from an LNG carrier in a sea off the sea, stores it in a storage tank, and vaporizes the LNG as needed to supply it to the customer.

Such LNG storage tanks are classified into independent tank type and membrane type depending on whether the insulation for storing the LNG at a cryogenic temperature directly acts on the load of the cargo. Separate tank type storage tanks which do not directly affect the cargo of the cargo are divided into MOSS type and IHI-SPB type. Membrane type storage tanks, in which the insulation acts directly on the cargo, are GT NO 96 type and TGZ Mark III It is divided into types.

The cargo hold, that is, the membrane type GT NO 96 type cargo hold according to an embodiment of the related art, comprises a primary insulation box made up of a plywood box, a perlite, etc., and a secondary insulation Box. Prior art relating to such a cargo hold is disclosed in Korean Patent Laid-Open Publication No. 2003-39709 (May 23, 2003).

The primary insulation box of the cargo hold is located on the LNG side, and the secondary insulation box is located on the inner wall side of the hull. In addition, a primary sealing wall (not shown) and a secondary sealing wall (not shown) made of Invar steel (36% Ni) having a thickness of 0.5 to 0.7 mm are disposed on the upper side of each of the primary insulating box and the secondary insulating box. These are each installed. The primary sealing wall and the secondary sealing wall are also referred to as a primary membrane and a secondary membrane (secondary membrane).

In addition, the primary sealing wall and the secondary sealing wall have almost the same degree of liquid tightness and strength, so that when the primary sealing wall leaks, the secondary sealing wall alone can safely support the cargo LNG.

On the other hand, the thermal insulation box has higher thermal insulation effect and excellent thermal deformation than steel materials due to the characteristics of the plywood used as the material. However, due to its weak strength, it may be damaged by the impact caused by sloshing phenomenon caused by the flow of LNG in the storage tank.

Therefore, the strength test for the insulation box is required before the insulation box is installed in the storage tank, and this test is performed by applying the insulation box to the hydraulic device.

However, since the hydraulic device is hydraulically operated, devices such as test rigs are enlarged, and the test results using the hydraulic device are excellent, but the test cost is high. Therefore, development of a new test device is required.

Korea Patent Publication No. 2003-39709 (Daewoo Shipbuilding & Marine Engineering Co., Ltd.) 2003.05.22.

Therefore, the technical problem to be achieved by the present invention is to provide a strength test apparatus and method of the insulation box for cargo hold that can be made of a simple structure to reduce the test cost and satisfy the required test conditions.

According to an aspect of the present invention, a chamber body in which a heat insulation box that is a strength test target is accommodated therein; A cover detachably coupled to the chamber body; And a pressurizing member disposed between the chamber body and the cover, the pressurizing member configured to pressurize an upper surface of the insulation box by stretching a region corresponding to the upper surface of the insulation box by the pressure fluid supplied through the cover. Strength testing apparatus of the insulation box may be provided.

The pressing member may be a rubber.

The rubber may be made of a silicon material.

It may further include a sealing member disposed between at least one of the chamber body and the pressing member and between the pressing member and the cover.

It may further include a support jig disposed in the chamber body to support the heat insulation box.

It may further include a pressure gauge provided on the cover.

The pressure fluid may be any one of an inert gas or a liquid, and the LNG may be stored in the cargo hold.

In addition, according to another embodiment of the present invention, the step of putting an insulation box which is the strength test target inside the chamber body; Arranging a pressing member configured to pressurize an upper surface of the insulating box by expanding and contracting an area corresponding to the upper surface of the insulating box by the pressure fluid supplied from the outside to the upper portion of the chamber body; Coupling the lid to the chamber body to cover the pressing member and supply the pressure fluid to the pressing member; And by supplying the pressure fluid to the pressing member may be provided a strength test method of the insulation box for cargo hold comprising the step of measuring the strength of the insulation box.

The pressing member may be a rubber made of silicon.

The pressure fluid may be any one of an inert gas or a liquid, and the LNG may be stored in the cargo hold.

Embodiments of the present invention, by pressing the pressure member evenly over the entire surface of the upper surface of the insulating box to meet the required test conditions, but has a simple structure has the advantage of reducing the test cost.

1 is a view schematically showing the strength test apparatus of the cargo box insulation box according to an embodiment of the present invention.
2 is a sectional view taken along the line II-II in Fig.
3 and 4 is a view schematically showing a state of use of the strength test apparatus of the insulating box for cargo hold according to an embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a view schematically showing the strength test apparatus of the cargo box insulation box according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line II-II of FIG.

As shown in these figures, the strength test apparatus 1 of the insulation box for cargo hold according to the present embodiment, the chamber body 10, the chamber body 10, the chamber body 10 is accommodated therein the insulation box (IB) that is the strength test target The cover 20 is detachably coupled to the cover, and is disposed between the chamber body 10 and the cover 20 and corresponds to an upper surface of the insulation box IB by a pressure fluid supplied through the cover 20. The area is stretched and provided with a pressing member 30 for pressing the upper surface of the insulating box (IB).

As shown in FIG. 1, the chamber body 10 may be manufactured in a rectangular parallelepiped shape, and a space for accommodating an insulation box IB, which is a strength test target, is provided inside the chamber body 10.

In the present embodiment, the height from the bottom to the upper end of the inner space of the chamber body 10 may be formed higher than the height of the insulation box IB, which is defined to enable testing of the insulation box IB having various heights.

In particular, when the height difference between the inner space of the insulation box (IB) and the chamber body 10 is much, the height difference can be corrected by supporting the supporting jig (J, see FIG. 3) under the insulation box (IB). In the present embodiment, the supporting jig may be made of wood or steel.

In the present embodiment, the chamber body 10 may be made of steel, and the chamber body 10 may be provided with a handle 11 for convenience of movement.

As shown in FIG. 2, the lid 20 is coupled to the upper side of the chamber main body 10 by a bolt coupling method to seal the internal space of the chamber main body 10, and is fastened to the chamber main body 10. Pressing the edge of the pressing member 30 to be described later serves to fix the pressing member 30 to the chamber body (10).

In addition, the cover 20 is provided with a pressure fluid inlet 21 through which an inert gas or liquid supplied from a pressure fluid supply unit (not shown) to be described later and a pressure fluid outlet 22 through which the inlet pressure fluid can be discharged are provided. . The pressure fluid inlet 21 and the pressure fluid outlet 22 may be provided with a valve (V).

In addition, the lid 20 may be provided with a lid handle 23 for convenience of movement of the lid 20 like the chamber body 10 described above.

As shown in FIG. 2, the pressing member 30 is disposed between the upper portion of the chamber body 10 and the cover 20, and the chamber body 10 is provided by a pressure fluid supplied from a pressure fluid supply unit to be described later. The inner surface of the insulating box (IB) extends in the direction of the upper surface of the insulating box (IB) to uniformly press the entire surface serves to serve to measure the strength of the insulating box (IB).

That is, the present embodiment can be uniformly pressurized by the pressure member supplied to the upper surface of the thermal insulation box (IB) by the pressure member 30 is stretched by the pressure fluid supplied over the entire upper surface of the thermal insulation box (IB) There is an advantage to test the strength of the box IB.

In the present embodiment, when the cover 20 is fastened to the chamber body 10 by the pressing member 30, the edge of the pressing member 30 is pressed by the lid 20 to the upper edge of the chamber body 10 by the cover 20. It may be fixed to the body (10).

In addition, the pressing member 30 in the present embodiment may be a rubber (rubber) made of a silicon material, it may be replaced with a flexible material.

In addition, the pressure fluid applied to the pressure member 30 may be an inert gas or liquid including nitrogen (N 2 ). Such a pressure fluid may be supplied by a pressure fluid supply (not shown), and when the pressure fluid is an inert gas, the pressure fluid may be supplied by connecting a gas tank (not shown) and the cover 20 to a tube (not shown), In the case of liquid, the fluid tank (not shown) and the cover 20 may be supplied by using a pump (not shown) by connecting a hose (not shown).

Meanwhile, in this embodiment, in order to maintain the airtightness between the chamber body 10 and the cover 20, as shown in FIG. 2, between the chamber body 10 and the pressing member 30 and the pressing member 30. And a sealing member 40 disposed between the cover 20.

In the present embodiment, the sealing member 40 may be installed only at any one of the space between the chamber body 10 and the pressing member 30 and between the pressing member 30 and the cover 20, and may be made of rubber. Can be.

Furthermore, the present embodiment measures the pressure applied to the pressing member 30 and the sudden change in pressure generated when the insulating box IB is damaged by the pressing force of the pressing member 30. ) Further includes a pressure gauge 50 installed on the cover 20 so as to know whether or not the breakage is caused.

3 and 4 is a view schematically showing a state of use of the strength test apparatus of the insulating box for cargo hold according to an embodiment of the present invention. 3 is a view schematically showing a state in which the insulation box (IB) is accommodated in the interior of the chamber body 10, and FIG. 4 shows the insulation box (IB) by pressing the upper surface of the insulation box (IB). Is a diagram schematically illustrating a state of testing the strength of a.

Hereinafter, with reference to Figures 3 and 4 will be briefly described the state of use of the strength test device 1 of the thermal insulation box for cargo hold according to this embodiment, that is, the strength test method of the thermal insulation box (IB).

First, as shown in Figure 3, the heat insulation box (IB) that is the strength test target in the chamber body 10 is put. When the height of the insulation box (IB) is significantly lower than the inner height of the chamber body 10 using the support jig (J) to support the lower portion of the insulation box (IB) as shown.

And a space of a predetermined height is formed between the pressing member 30 and the insulating box (IB) in a state in which the insulating box (IB) is accommodated in the chamber body 10, the space is stretched of the pressing member 30 Provided as space. In addition, the space between the pressing member 30 and the insulating box (IB) may be formed about 10mm so that the pressing member 30 can press the upper surface of the insulating box (IB) without tearing.

Next, after the pressing member 30 and the sealing member 40 are disposed on the upper side of the chamber body 10, the cover 20 is coupled to the chamber body 10 by a bolt coupling method. When the cover 20 is coupled to the chamber body 10, the pressing member 30 and the sealing member 40 are fixed to the chamber body 10 while the edge thereof is pressed against the chamber body 10 by the cover 20. .

 After the cover 20 is coupled to the chamber body 10, a valve V is installed on the cover 20 to connect the valve V and the pressure fluid supply part, and then the pressurizing member 30 through the cover 20. Pressure fluid to the tank.

In the present embodiment, the pressure fluid may be either an inert gas or a liquid. When supplying a pressure fluid that is a liquid, the pressure fluid outlet may be used to discharge pressure remaining between the pressure member 30 and the cover 20. 22) After confirming that the liquid is discharged, the strength test may be performed by supplying a pressure fluid which is a liquid in earnest.

When the connection work for the strength test is completed, the pressure fluid is supplied to the pressure member (30). When the pressure fluid is supplied to the pressure member 30, as shown in Figure 4, the pressure member 30 is extended in the direction of the heat insulation box (IB) by the pressure fluid flowing through the cover 20 due to the nature of the material. While gradually pressing the insulation box (IB).

As described above, when the pressure member 30 is made of a rubber made of silicon, it is elastic and does not tear well, and since the pressure fluid supplied to the pressure member 30 does not leak through the pressure member 30, airtightness is achieved. There is a sustainable advantage.

In addition, the pressing member 30 is elastic, and only the edge portion thereof is fixed to the chamber body 10 and the remaining portion is stretched so that the upper surface of the insulation box IB can be uniformly pressed over the entire area.

As a result, there is an advantage that the accuracy of the compressive strength test can be improved by the pressing force applied uniformly to the upper surface of the insulation box (IB).

And if the insulation box (IB) is broken within a predetermined pressure and time, it can be seen that the strength of the insulation box (IB) is poor, and if the insulation box (IB) is broken, a sudden pressure fluctuation occurs, which is through the pressure gauge 50 You can check it.

Meanwhile, the pressure fluid remaining between the cover 20 and the pressure member 30 may be discharged through the pressure fluid outlet 22.

As described above, the present embodiment can satisfy the required test conditions by uniformly applying pressure over the entire upper surface of the insulation box IB by the pressing member 30, but can also reduce the cost of the test. There is an advantage to that.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: Strength test apparatus of insulation box for cargo hold 10: Chamber body
11: handle 20: cover
21: pressure fluid inlet 22: pressure fluid outlet
23: cover handle 30: pressure member
40: sealing member 50: pressure gauge
IB: Insulation Box J: Supporting Jig
V: Valve

Claims (10)

A chamber body in which a heat insulation box that is a strength test object is accommodated therein;
A cover detachably coupled to the chamber body; And
Arranged between the chamber body and the cover, the insulation corresponding to the upper surface of the insulating box is stretched by the pressure fluid supplied through the cover is insulated for cargo hold including a pressing member for pressing the upper surface of the insulating box. Box strength tester. The method according to claim 1,
The pressing member is a rubber (rubber) strength test apparatus of the insulating box for cargo hold. The method according to claim 2,
The rubber is a strength test device of the insulating box for cargo hold, characterized in that made of silicon material. The method according to claim 1,
And a sealing member disposed between at least one of the chamber body and the pressing member and between the pressing member and the cover. The method according to claim 1,
The strength test apparatus of the cargo box insulation box further comprises a support jig disposed in the chamber body to support the insulation box. The method according to claim 1,
Strength test apparatus of the cargo box insulation box further comprising a pressure gauge provided on the cover. The method according to claim 1,
The pressure fluid is either an inert gas or a liquid,
The cargo hold is a strength test device of the insulating box for cargo hold, characterized in that the liquefied natural gas (LNG) is stored. Putting an insulation box to be a strength test object inside the chamber body;
Arranging a pressing member configured to pressurize an upper surface of the insulating box by expanding and contracting an area corresponding to the upper surface of the insulating box by the pressure fluid supplied from the outside to the upper portion of the chamber body;
Coupling the lid to the chamber body to cover the pressing member and supply the pressure fluid to the pressing member; And
Supplying the pressure fluid to the pressure member to measure the strength of the insulation box strength test method of the cargo box. The method according to claim 8,
The pressing member is a strength test method of the insulation box for cargo hold, characterized in that the rubber (rubber) made of a silicon material. The method according to claim 8,
The pressure fluid is either an inert gas or a liquid,
Strength test method of the insulation box for cargo hold, characterized in that the liquefied natural gas (LNG) is stored in the cargo hold.
KR1020110144896A 2011-12-28 2011-12-28 Strength test apparatus of insulation box for cargo containment KR20130076340A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020110144896A KR20130076340A (en) 2011-12-28 2011-12-28 Strength test apparatus of insulation box for cargo containment

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106092759A (en) * 2016-08-04 2016-11-09 江苏恒神股份有限公司 A kind of hydrostatic test special tooling and hydrostatic test method
KR20160139088A (en) * 2015-05-26 2016-12-07 현대삼호중공업 주식회사 Ship block assembly's poor state test method
KR20180047344A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Jig apparatus for cryogenic bending test and the testing method using the same
KR20180047342A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled perpendicularly
KR20180047343A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled crossly
KR20180066653A (en) 2016-12-09 2018-06-19 대우조선해양 주식회사 Mold device for producing test pieces and method for producing the test pieces using the same
CN108942820A (en) * 2018-09-21 2018-12-07 特瑞斯能源装备股份有限公司 A kind of building case test fixture platform
CN114112686A (en) * 2022-01-26 2022-03-01 徐州德胜石油机械有限公司 Withstand voltage test tool for end cover of explosion-proof motor of filling station filling equipment

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160139088A (en) * 2015-05-26 2016-12-07 현대삼호중공업 주식회사 Ship block assembly's poor state test method
CN106092759A (en) * 2016-08-04 2016-11-09 江苏恒神股份有限公司 A kind of hydrostatic test special tooling and hydrostatic test method
KR20180047344A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Jig apparatus for cryogenic bending test and the testing method using the same
KR20180047342A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled perpendicularly
KR20180047343A (en) 2016-10-31 2018-05-10 대우조선해양 주식회사 Fixing jig apparatus for coupling force measurement of specimens coupled crossly
KR20180066653A (en) 2016-12-09 2018-06-19 대우조선해양 주식회사 Mold device for producing test pieces and method for producing the test pieces using the same
CN108942820A (en) * 2018-09-21 2018-12-07 特瑞斯能源装备股份有限公司 A kind of building case test fixture platform
CN108942820B (en) * 2018-09-21 2023-09-29 特瑞斯能源装备股份有限公司 Building box test fixture platform
CN114112686A (en) * 2022-01-26 2022-03-01 徐州德胜石油机械有限公司 Withstand voltage test tool for end cover of explosion-proof motor of filling station filling equipment
CN114112686B (en) * 2022-01-26 2022-04-12 徐州德胜石油机械有限公司 Withstand voltage test tool for end cover of explosion-proof motor of filling station filling equipment

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