Hull weld joint tightness test tool

Abstract

The utility model discloses a ship body welding seam tightness test tool, belongs to the technical field of ship construction, and solves the problems that the existing welding seam tightness test needs long time and the production efficiency is reduced. The ship body welding seam tightness test tool comprises a bottom plate, a first sealing gasket is arranged at the bottom of the bottom plate, a cylinder is arranged at the top of the bottom plate, a lower flange plate is arranged at the top of the cylinder, an upper flange plate is arranged at the top of the lower flange plate, and an observation plate is arranged between the lower flange plate and the upper flange plate. The lower flange plate and the upper flange plate are both provided with a plurality of through holes, the through holes in the lower flange plate correspond to the through holes in the upper flange plate in a one-to-one mode, fastening bolts are arranged in the through holes, and the fastening bolts sequentially penetrate through the upper flange plate, the observation plate and the lower flange plate to be in threaded connection with nuts. And a connecting pipe communicated with the cylinder body is arranged on the outer wall of the cylinder body. According to the ship body welding seam tightness test tool, the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shipbuilding, and more specifically, it relates to a hull weld tightness test tooling. Background Art

[0002] For hull weld tightness tests, traditional methods include hydraulic pressure, hydraulic pressure and gas inflation mixing, gas inflation, flushing water, kerosene, water spraying and other test methods. However, due to the influence of structures, natural conditions and long test time, etc., the inspection department generally does not agree to use this test method for kerosene tests; and for water tightness tests, due to the limitation of the load-bearing capacity of the shipbuilding berth base surface and the long time for drainage and water injection, it takes more time and has low efficiency.

[0003] Currently, the test method of cabin gas inflation tightness is adopted in shipbuilding. Although this method has many advantages, it also has its limitations. That is, when conducting gas inflation tightness tests, the surrounding cabins must be connected completely, and the construction integrity of this cabin must meet the requirements of tightness tests. Therefore, it affects the painting of the next process and the installation of launching devices and other construction operations, affecting the smoothness of production. Moreover, it takes a long time to inflate the overall cabin and reach the required pressure, greatly increasing the time cost of weld tightness tests, thereby reducing production efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a hull weld tightness test tooling aiming at the above deficiencies of the prior art, which shortens the time required for weld tightness tests, saves time costs and improves production efficiency.

[0005] The technical solution of the utility model is as follows: A hull weld tightness test tooling includes a bottom plate. A first sealing gasket is provided at the bottom of the bottom plate. A cylinder body is provided at the top of the bottom plate. A lower flange plate is provided at the top of the cylinder body. An upper flange plate is provided at the top of the lower flange plate. An observation plate is provided between the lower flange plate and the upper flange plate. A plurality of through holes are provided on both the lower flange plate and the upper flange plate, and the plurality of through holes on the lower flange plate correspond to the plurality of through holes on the upper flange plate one by one. A fastening bolt is provided in the through hole. The fastening bolt sequentially passes through the upper flange plate, the observation plate, the lower flange plate and is threadedly connected with a nut. A connecting pipe communicated with the cylinder body is provided on the outer wall of the cylinder body. A vacuum generator is provided at one end of the connecting pipe. A branch pipe is provided on the connecting pipe. A vacuum pressure gauge is provided on the branch pipe.

[0006] As a further improvement, the cylinder body is of an oblong shape or a cylindrical shape.

[0007] Further, a second sealing gasket is provided at the top of the lower flange plate, and the second sealing gasket is located between the lower flange plate and the observation plate.

[0008] Furthermore, the observation plate is made of transparent organic glass.

[0009] Furthermore, the distance between two adjacent through holes is 50 mm.

[0010] Furthermore, reinforcing ribs are provided between the cylinder and the bottom plate, and between the cylinder and the lower flange plate.

[0011] Furthermore, a ball valve is provided on the connecting pipe, and the ball valve is located between the vacuum generator and the branch pipe.

[0012] Furthermore, there are two vacuum pressure gauges, and the two vacuum pressure gauges are respectively installed on both sides of the branch pipe.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses a hull weld tightness test tool, which has the characteristics of being smart and simple, fast in negative pressure starting, and short in tightness leak detection time, thus shortening the time required for the tightness test, saving time cost, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the medium-long waist-shaped cylinder of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view of the structure of the medium-long waist-shaped cylinder of the utility model;

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of the cylindrical body in the utility model;

[0019] Figure 4 It is a schematic diagram of the top view of the cylindrical barrel in the utility model.

[0020] Among them: 1-bottom plate, 2-cylinder, 3-lower flange plate, 4-upper flange plate, 5-observation plate, 6-fastening bolts, 7-connecting pipe, 8-vacuum generator, 9-branch pipe, 10-vacuum pressure gauge, 11-first sealing gasket, 12-second sealing gasket, 13-ball valve, 14-reinforcement rib. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See also Figures 1-4A hull weld tightness test tool, comprising a bottom plate 1, a first sealing gasket 11 is provided at the bottom of the bottom plate 1, the thickness of the first sealing gasket 11 is about 20-30mm, which can further improve the joint tightness between the bottom plate 1 and the hull outer plate, and more effectively prevent gas from leaking from the gap between the bottom plate 1 and the hull outer plate, destroying the vacuum negative pressure in the cylinder 2, and causing inaccurate weld tightness test; a cylinder 2 is provided on the top of the bottom plate 1, a lower flange plate 3 is provided on the top of the cylinder 2, an upper flange plate 4 is provided on the top of the lower flange plate 3, an observation plate 5 is provided between the lower flange plate 3 and the upper flange plate 4, a plurality of through holes are provided on the lower flange plate 3 and the upper flange plate 4, and the plurality of through holes on the lower flange plate 3 correspond to the plurality of through holes on the upper flange plate 4 one by one, a fastening bolt 6 is provided in the through hole, and the fastening bolt 6 passes through the upper flange plate 4, the observation plate 5, and the lower flange plate 3 in turn and is threadedly connected with a nut, a connecting pipe 7 connected thereto is provided on the outer wall of the cylinder 2, and the connecting pipe A vacuum generator 8 is provided at one end of 7, and the vacuum generator 8 is electrically connected to a nearby power supply; a branch pipe 9 is provided on the connecting pipe 7, and a vacuum pressure gauge 10 is provided on the branch pipe 9; when in use, a display liquid, such as soapy water, detergent and water solution, is sprayed or brushed on the weld to be inspected in advance, the tooling is covered on the weld coated with the display liquid, a downward force is applied to the cylinder 2, and the vacuum generator 8 is started to form a negative pressure in the cylinder 2, and the vacuum pressure gauge is observed to make the pressure in the cylinder 2 between -0.02Mpa and -0.026Mpa. On the premise of meeting the vacuum degree requirement, observe whether there are bubbles on the weld surface through the observation plate 5. If there are bubbles, it means that the weld is leaking and should be repaired and re-inspected; if no bubbles emerge, it means that the weld is normal. The tooling has the characteristics of being smart and simple, fast negative pressure start-up, and short leak detection time, which shortens the time required for the tightness test, saves time cost, and effectively improves production efficiency.

[0023] In this embodiment, the cylinder 2 is long waist or cylindrical; Figure 2 As shown, the cylinder 2 is a long waist type, and the waist type cylinder 2 can be used to perform tightness tests on straight welding parts with a small radius of curvature; Figure 4 As shown, the barrel 2 is cylindrical and is suitable for welds with small-scale dense welds and a large radius of curvature.

[0024] In this embodiment, a second sealing gasket 12 is provided on the top of the lower flange plate 3, and the second sealing gasket 12 is located between the lower flange plate 3 and the observation plate 5, effectively improving the joint airtightness between the lower flange plate 3 and the observation plate 5, and effectively preventing gas from leaking from the gap between the lower flange plate 3 and the observation plate 5, thereby destroying the vacuum negative pressure in the cylinder 2 and causing inaccurate weld tightness test.

[0025] In this embodiment, the observation plate 5 is made of transparent plexiglass with a thickness of 8 mm, which is convenient for observing the weld situation during the weld tightness test, and at the same time ensures that the tooling has sufficient strength to ensure the airtightness of the cylinder body 2.

[0026] In this embodiment, the distance between two adjacent through holes is 50 mm, which can effectively improve the overall sealing performance of the cylinder body 2. In other embodiments, the distance between two adjacent through holes can be reduced to 40 mm, 30 mm, etc., which can further improve the overall sealing performance of the cylinder body 2.

[0027] In this embodiment, reinforcing ribs 14 are provided between the cylinder body 2 and the bottom plate 1, and between the cylinder body 2 and the lower flange plate 3; reinforcing ribs 14 are provided on both the inner and outer walls of the cylinder body 2, which can further enhance the connection strength between the cylinder body 2 and the bottom plate 1, and between the cylinder body 2 and the lower flange plate 3.

[0028] In this embodiment, a ball valve 13 is provided on the connecting pipe 7, and the ball valve 13 is located between the vacuum generator 8 and the branch pipe 9; when the vacuum generator 8 reduces the pressure in the cavity of the cylinder body 2 to the required pressure, closing the ball valve 13 can improve the overall sealing performance of the cylinder body 2. When the tooling is in an idle state, closing the ball valve 13 can prevent impurities from entering the vacuum generator 8 along the connecting pipe 7, causing damage to the vacuum generator 8.

[0029] In this embodiment, there are two vacuum pressure gauges 10 in total, and the two vacuum pressure gauges 10 are respectively installed on both sides of the branch pipe 9. The two vacuum pressure gauges 10 are both connected to the branch pipe 9. One of the vacuum pressure gauges 10 is used to detect and control the vacuum degree in the cavity of the cylinder body 2, and the other vacuum pressure gauge 10 can be used as a reference to timely detect whether there is a fault in the vacuum pressure gauge for detection, and can be used as a backup when a fault occurs to ensure the smooth progress of the test, and can effectively ensure the safety and accuracy of the test.

[0030] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. A hull weld tightness test tool, characterized in that: The invention comprises a bottom plate (1), the bottom of the bottom plate (1) is provided with a first sealing gasket (11), the top of the bottom plate (1) is provided with a cylinder (2), the top of the cylinder (2) is provided with a lower flange plate (3), the top of the lower flange plate (3) is provided with an upper flange plate (4), an observation plate (5) is provided between the lower flange plate (3) and the upper flange plate (4), the lower flange plate (3) and the upper flange plate (4) are both provided with a plurality of through holes, and the plurality of through holes on the lower flange plate (3) Corresponding one to one with the multiple through holes on the upper flange plate (4), the through holes are provided with fastening bolts (6), and the fastening bolts (6) pass through the upper flange plate (4), the observation plate (5), and the lower flange plate (3) in sequence and are threadedly connected with the nuts. A connecting pipe (7) connected thereto is provided on the outer wall of the cylinder (2), a vacuum generator (8) is provided at one end of the connecting pipe (7), a branch pipe (9) is provided on the connecting pipe (7), and a vacuum pressure gauge (10) is provided on the branch pipe (9).

2. A hull weld tightness test tool according to claim 1, characterized in that: The cylinder (2) is of long waist or cylindrical shape.

3. A hull weld tightness test tool according to claim 1, characterized in that: A second sealing gasket (12) is provided on the top of the lower flange plate (3), and the second sealing gasket (12) is located between the lower flange plate (3) and the observation plate (5).

4. A hull weld tightness test tool according to claim 3, characterized in that: The observation plate (5) is made of transparent organic glass.

5. A hull weld tightness test tool according to claim 1, characterized in that: The distance between two adjacent through holes is 50 mm.

6. A hull weld tightness test tool according to claim 1, characterized in that: Reinforcing ribs (14) are provided between the cylinder (2) and the bottom plate (1), and between the cylinder (2) and the lower flange plate (3).

7. A hull weld tightness test tool according to claim 1, characterized in that: The connecting pipe (7) is provided with a ball valve (13), and the ball valve (13) is located between the vacuum generator (8) and the branch pipe (9).

8. A hull weld tightness test tool according to claim 1, characterized in that: There are two vacuum pressure gauges (10) in total, and the two vacuum pressure gauges (10) are respectively installed on both sides of the branch pipe (9).

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