Tool for measuring thickness of insulation plate trihedron center patch for LNG (liquefied natural gas) ship
By designing a tooling including base, column, fixture, dial meter and calibration column, the continuous accuracy problem of the central patch thickness measurement of LNG marine insulating plate trihedral is solved, and efficient and high-precision measurement is achieved.
Patent Information
- Application Number
- CN202422246462.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The prior art cannot achieve continuous and accurate measurement of the thickness of the trihedral center patch of LNG marine insulating plates, and the measurement efficiency is low.
Design a tool that includes a base, column, fixture, dial meter, positioning block and calibration column. Through the coordination of fixture and calibration column, the calibration function of the dial meter is realized, ensuring that the meter head is coaxial with the calibration round head and achieving continuous and accurate measurement.
The continuous measurement of the central patch thickness of the dial table is achieved, which improves the measurement efficiency, ensures high measurement accuracy, and improves the effectiveness of the central patch in the center of the trihedral of the insulating plate.
Smart Images
Figure CN223192267U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of liquefied natural gas transportation, relates to the detection of a trihedron center patch of an insulation board for LNG ships, and specifically relates to a tool for measuring the thickness of a trihedron center patch 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 corner area of the bulkhead involves the docking of three insulation boards to form a trihedron. Due to its particularity, there will be an independent area at the center of the insulation board trihedron, which requires a special center patch to fill this area. Figure 1 As shown, the structure of the central patch is as follows Figure 2 shown.
[0003] Due to the sealing requirements, the thickness of the center patch needs to be measured and inspected. However, since the center patch is in an arc shape, it cannot be measured with a general vernier caliper. In principle, a dial indicator can be used to measure the thickness, but because the center patch requires stable force conditions during measurement, and after each measurement, the dial indicator must be able to achieve accurate zeroing, otherwise continuous and accurate measurement cannot be achieved.
[0004] Therefore, a new technical solution is needed to solve the above problems. Summary of the Invention
[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, a tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board is provided, which can realize continuous and accurate measurement of the thickness of the center patch by a dial indicator, not only ensuring the measurement accuracy but also improving the measurement efficiency.
[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a tool for measuring the thickness of the trihedron center patch of the LNG ship insulation board, including a base, a column arranged on the base, a clamp installed on the column, a dial indicator fixed on the clamp, and a positioning block arranged on the base. A correction column is provided on the positioning block, and a correction round head is provided on the top of the correction column. The correction round head is located directly below the dial indicator head, and the correction column, correction round head and the dial indicator head are coaxially arranged.
[0007] Furthermore, the clamp includes a clamp body, a first knob locking bolt and a second knob locking bolt. The clamp body is sleeved on the column. The first knob locking bolt is arranged at the rear end of the clamp body for locking and fixing the clamp body. The second knob locking bolt is arranged at the front end of the clamp body for locking and fixing the dial indicator.
[0008] Furthermore, the clamp body is sleeved on the column through the column hole, a first opening is provided between the column hole and the rear end of the clamp body, and the first knob locking bolt passes through the first opening.
[0009] Furthermore, the front end of the clamp body is provided with a dial hole matching the dial indicator, the dial indicator is fitted on the dial hole, the dial indicator head extends downward out of the dial hole, a second opening is provided between the dial hole and the front end of the clamp body, and the second knob locking bolt passes through the second opening.
[0010] Furthermore, the positioning block includes a plywood and a foam board adhered to the plywood, the plywood is adhered and fixed to the base, and the bottom of the correction column is inserted and fitted into the foam board. On the one hand, the foam board is easy to replace, and on the other hand, due to the elasticity of the foam board, the position of the correction column can be fine-tuned to achieve the correction of the dial indicator.
[0011] Beneficial effect: Compared with the existing technology, the utility model has a dial indicator correction function through a tooling design with a specific structure, which realizes the continuous and accurate measurement of the thickness of the center patch by the dial indicator, not only ensuring high measurement accuracy, but also improving measurement efficiency, and the use effect of the center patch in the center of the insulating board trihedron is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 Schematic diagram of the structure of the insulating plate trihedron;
[0013] Figure 2 Schematic diagram of the structure of the center patch;
[0014] Figure 3 This is a three-dimensional structural diagram of the utility model at a first viewing angle;
[0015] Figure 4 This is a three-dimensional structural diagram of the utility model at a second viewing angle;
[0016] Figure 5 It is a three-dimensional structural diagram of the utility model at a third viewing angle. DETAILED DESCRIPTION
[0017] 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.
[0018] like Figures 3 to 5 As shown, the utility model provides a tool for measuring the thickness of the trihedron center patch of the LNG ship insulation board, including a base 1, a column 2 set on the base 1, a clamp installed on the column 2, a dial indicator 6 fixed on the clamp, and a positioning block set on the base 1. The clamp includes a clamp body 7, a first knob locking bolt 8 and a second knob locking bolt 9. The clamp body 7 is sleeved on the column 2 through a column hole 71. A first opening 72 is provided between the column hole 71 and the rear end of the clamp body 7. The first knob locking bolt 8 passes through the first opening 72 and is provided at the rear end of the clamp body 7. The front end of the clamp body 7 is provided with a gauge hole 7 matching the dial indicator 6. 3. The dial indicator 6 is fitted on the gauge hole 73. The gauge head 61 of the dial indicator 6 extends downward from the gauge hole 73. A second opening 74 is provided between the gauge hole 73 and the front end of the clamp body 7. The second knob locking bolt 9 passes through the second opening 74 and is provided at the front end of the clamp body 7. The positioning block includes a plywood 3 and a foam board 4 adhered to the plywood 3. The plywood 3 is adhered and fixed to the base 1. The bottom of the correction column 5 is inserted and fitted in the foam board 4. The top of the correction column 5 is provided with a correction round head 51. The correction round head 51 is located directly below the gauge head 61 of the dial indicator 6. The correction column 5, the correction round head 51 and the gauge head 61 of the dial indicator 6 are coaxially arranged.
[0019] In this embodiment, the above-mentioned tooling is applied to Figure 1 The thickness of the central patch of the insulating board trihedron shown is measured. The structure of the central patch is as follows Figure 2 As shown, the specific operation process is:
[0020] First, move the clamp 7 downward until the gauge head 61 lightly touches the correction round head 51, and check whether the gauge head 61 and the correction round head 51 are on the same central axis. If so, calibrate the dial indicator 6 to zero. If not, fine-tune the position of the correction column 5 or adjust the angle of the clamp 7 until the gauge head 61 and the correction round head 51 are on the same central axis, and then calibrate the dial indicator 6 to zero.
[0021] After the zeroing operation is completed, place the measuring point of the center patch on the calibration round head 51, move the clamp 7 and the dial indicator 6 downward until the dial indicator 61 contacts the center patch, and then measure the thickness of the center patch with the dial indicator 6 to determine whether it is qualified.
[0022] After the measurement of a center patch is completed, the dial indicator 6 needs to be zeroed again to ensure the accuracy of each measurement. This allows the measuring fixture to achieve continuous and accurate measurement of the center patch thickness using the dial indicator 6, which not only ensures high measurement accuracy but also improves measurement efficiency. The effectiveness of the center patch in the center of the insulating board trihedron is guaranteed.
Claims
1. A tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board, characterized in that: It includes a base, a column arranged on the base, a clamp installed on the column, a dial indicator fixed on the clamp, and a positioning block arranged on the base. The positioning block is provided with a correction column, and the top of the correction column is provided with a correction round head. The correction round head is located directly below the dial indicator head. The correction column, the correction round head and the dial indicator head are coaxially arranged.
2. The tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board according to claim 1, characterized in that: The clamp includes a clamp body, a first knob locking bolt and a second knob locking bolt. The clamp body is sleeved on the column. The first knob locking bolt is arranged at the rear end of the clamp body for locking and fixing the clamp body. The second knob locking bolt is arranged at the front end of the clamp body for locking and fixing the dial indicator.
3. The tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board according to claim 2, characterized in that: The clamp body is sleeved on the column through the column hole, a first opening is provided between the column hole and the rear end of the clamp body, and the first knob locking bolt passes through the first opening.
4. The tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board according to claim 2, characterized in that: The front end of the clamp body is provided with a dial hole matching the dial indicator, the dial indicator is fitted on the dial hole, the dial indicator head extends downward out of the dial hole, a second opening is provided between the dial hole and the front end of the clamp body, and the second knob locking bolt passes through the second opening.
5. The tool for measuring the thickness of a trihedron center patch of an LNG ship insulation board according to claim 1, characterized in that: The positioning block comprises a plywood and a foam board adhered to the plywood, the plywood is adhered and fixed on the base, and the bottom of the correction column is inserted and fitted into the foam board.