Judgment tool for plate angle thickness of insulating plate for LNG (Liquefied Natural Gas) ship

Abstract

The utility model discloses a determination tool for the plate angle thickness of an insulating plate for an LNG (Liquefied Natural Gas) ship, which comprises a determination body, a determination opening is arranged on the determination body, one end of the determination opening is a reference edge, the other end of the determination opening is provided with a determination step, and the determination step divides the other end of the determination opening into a lower limit edge and an upper limit edge. The horizontal distances between the lower limit edge and the reference edge and between the upper limit edge and the reference edge are the thickness lower limit distance and the thickness upper limit distance respectively. According to the utility model, one-time operation determination can be carried out on whether the plate angle thickness of the insulating plate is qualified, the determination accuracy is high, the reliability is good, the operation time consumption is less, the detection time is saved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of liquefied natural gas transportation, relates to the detection of the corner thickness of an insulation board for LNG ships, and specifically relates to a tool for determining the corner thickness of an insulation board for LNG ships. Background Art

[0002] LNG (liquefied natural gas) ships are special ships used to store and transport liquefied natural gas. Due to the characteristics of liquefied natural gas, the storage tanks used to store liquefied natural gas on LNG ships must have extremely high standards of sealing, flame retardancy, insulation, etc. The bulkheads in the storage tanks must be spliced with high-performance insulation boards, which require excellent sealing. The structure of the insulation boards at the corners of the bulkheads is relatively special. Some are formed by the combination of several insulation boards. Therefore, the thickness of the board corners after installation must be tested, because the thickness of the board corners will affect the overall installation effect of the insulation board. Once local bulges or depressions occur, it will affect the sealing, flame retardancy, insulation and other properties. Therefore, the thickness of the insulation board corners must be tested.

[0003] The existing detection method is to directly measure the thickness using a vernier caliper. This measurement method has many disadvantages, as follows:

[0004] 1. The vernier caliper can only measure the local thickness. In order to know the overall thickness of the plate corner, it is necessary to perform multiple measurements in different places, which is time-consuming, labor-intensive and inefficient.

[0005] 2. Even if multiple measurements are performed, the overall thickness cannot be reflected, and some local thickness may still be unqualified.

[0006] 3. The measurement of vernier caliper is affected by factors such as manual operation and the accuracy of the caliper itself, which leads to certain errors in thickness measurement. It is difficult to ensure the stability and reliability of the measurement results, and the detection effect is difficult to be effectively guaranteed. Summary of the Invention

[0007] Purpose of the invention: In order to overcome the shortcomings of the existing technology, a tool for determining the corner thickness of LNG ship insulation panels is provided, which can perform a one-time operation to determine whether the corner thickness of the insulation panels is qualified. It not only has high judgment accuracy and good reliability, but also takes less time to operate, saves detection time, and improves detection efficiency.

[0008] Technical solution: To achieve the above-mentioned purpose, the utility model provides a tool for determining the corner thickness of LNG ship insulation panels, including a determination body, a determination opening being provided on the determination body, one end of the determination opening being a reference edge, and the other end being provided with a determination step, the determination step dividing the other end of the determination opening into a lower limit edge and an upper limit edge, the horizontal distances from the lower limit edge and the upper limit edge to the reference edge being the lower limit thickness distance and the upper limit thickness distance, respectively.

[0009] Furthermore, the reference edge, lower limit edge and upper limit edge are all wavy structures. The design of the wavy structure can reduce the contact area with the board corner, reduce the friction between the board corner and the tooling, and prevent the tooling from damaging the board corner surface during use.

[0010] Furthermore, the reference side, the lower limit side and the upper limit side are all horizontal straight line structures.

[0011] Furthermore, the step is determined to be a horizontal step.

[0012] Furthermore, the front end surface of the determination body is a horizontal plane structure.

[0013] Beneficial effects: Compared with the prior art, the present invention adopts a tool with a specific structural design to determine whether the thickness of the insulation board corner is qualified, replacing the existing determination method of measuring with a vernier caliper, and has the following advantages:

[0014] 1. The thickness of the insulation board corners can be judged to be qualified through a one-time operation of the tooling, which greatly shortens the detection time and improves the detection efficiency.

[0015] 2. It can accurately determine the overall thickness of the insulation board corners without any blind spots, thus ensuring the accuracy and reliability of the determination results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the determination state in Example 1;

[0018] Figure 3 This is a schematic diagram of the determination state in Example 2;

[0019] Figure 4 This is a schematic diagram of the determination state in Example 3. DETAILED DESCRIPTION

[0020] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0021] like Figure 1 As shown, the utility model provides a tool for determining the corner thickness of an insulating board for an LNG ship, comprising a determining body 1, a determining opening 2 being opened on the determining body 1, one end of the determining opening 2 being a reference edge 3, and the other end being provided with a determining step 4, the determining step 4 dividing the other end of the determining opening 2 into a lower limit edge 6 and an upper limit edge 5, the reference edge 3, the lower limit edge 6 and the upper limit edge 5 are all wavy structures, the horizontal distances from the wave tops of the lower limit edge 6 and the upper limit edge 5 to the wave tops of the reference edge 3 are the lower limit distance of the thickness and the upper limit distance of the thickness respectively, the reference edge 3, the lower limit edge 6 and the upper limit edge 5 are all horizontal straight line structures, the determining step 4 is a horizontal step, and the front end face of the determining body 1 is a horizontal plane structure.

[0022] The above-mentioned determination tool is used to perform the following embodiments 1 to 3, specifically:

[0023] Example 1:

[0024] like Figure 2 As shown, in this embodiment, the first plate corner 7 is to be tested, and the qualified range of the plate corner thickness is 49±1.0mm. Therefore, in this embodiment, the horizontal distances from the lower limit edge 6 and the upper limit edge 5 to the reference edge 3 are 48mm and 50mm respectively. The staff pushes the reference edge 3 of the judgment body 1 along one side of the first plate corner 7 into the judgment opening 2, and finally finds that the other side of the first plate corner 7 cannot touch the judgment step 4 and will enter the lower limit edge 6 area of the judgment opening 2. Therefore, it can be determined that the overall thickness of the first plate corner 7 is less than 48mm, and the thickness of the first plate corner 7 is unqualified.

[0025] Example 2:

[0026] like Figure 3 As shown, in this embodiment, the second plate corner 8 is to be tested, and the qualified range of the plate corner thickness is 49±1.0mm. Therefore, in this embodiment, the horizontal distances from the lower limit edge 6 and the upper limit edge 5 to the reference edge 3 are 48mm and 50mm respectively. The staff pushes the reference edge 3 of the judgment body 1 along one side of the second plate corner 8 into the judgment opening 2, and finally finds that the other side of the second plate corner 8 contacts the judgment step 4 and cannot be pushed further. Therefore, it can be determined that the overall thickness of the second plate corner 8 is between 48mm and 50mm, and the thickness of the second plate corner 8 is qualified.

[0027] Example 3:

[0028] like Figure 4As shown, in this embodiment, the third plate corner 9 is to be tested, and the qualified range of the plate corner thickness is 49±1.0mm. Therefore, in this embodiment, the horizontal distances from the lower limit edge 6 and the upper limit edge 5 to the reference edge 3 are 48mm and 50mm respectively. The staff pushes the reference edge 3 of the judgment body 1 along one side of the third plate corner 9 into the judgment opening 2, but finds that the other side of the third plate corner 9 exceeds the upper limit edge 5 of the judgment opening 2, and the third plate corner 9 cannot enter the judgment opening 2. Therefore, it can be determined that the overall thickness of the third plate corner 9 is greater than 50mm, and the thickness of the third plate corner 9 is unqualified.

Claims

1. A tool for determining the corner thickness of insulation boards for LNG ships, characterized in that: It includes a judgment body, which is provided with a judgment opening, one end of the judgment opening is a reference edge, and the other end is provided with a judgment step, the judgment step divides the other end of the judgment opening into a lower limit edge and an upper limit edge, and the horizontal distances from the lower limit edge and the upper limit edge to the reference edge are the lower limit distance of thickness and the upper limit distance of thickness respectively.

2. The tool for determining the corner thickness of an insulation board for LNG ships according to claim 1, characterized in that: The reference edge, lower limit edge and upper limit edge are all wave structures.

3. The tool for determining the corner thickness of an insulation board for an LNG ship according to claim 1, characterized in that: The reference side, lower limit side and upper limit side are all horizontal straight line structures.

4. The tool for determining the corner thickness of an insulation board for an LNG ship according to claim 1, characterized in that: The step is determined to be a horizontal step.

5. The tool for determining the corner thickness of an insulation board for an LNG ship according to claim 1, characterized in that: The front end surface of the judging body is a horizontal plane structure.

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