Ship pipeline negative pressure leak detection cover

Abstract

The utility model discloses a ship pipeline negative pressure leak detection cover, and relates to the technical field of ship pipeline detection auxiliary equipment. Comprising a valve, a first leakage detecting shell, a first assembling cylinder and a second assembling cylinder, an arc-shaped groove is formed in a limiting plate in a penetrating mode, a protruding column is arranged on one side of an inclined supporting plate, and a special-shaped plate is rotationally arranged at one end of the inclined supporting plate. According to the device, the special-shaped plate, the inclined supporting plate and other components are arranged, after the L-shaped special-shaped plate movably penetrates through a groove in the first protruding block, a protruding column arranged on one side of the inclined supporting plate movably penetrates through the interior of an arc-shaped groove in the limiting plate, and after the inclined supporting plate is pressed downwards, the protruding column in the arc-shaped groove serves as a rotating point; along with downward pressing of the inclined supporting plate, the first protruding block and the second protruding block can be extruded by the special-shaped plate to move and approach each other, so that the first leakage detection shell and the second leakage detection shell are assembled, the situations of corrosion or breakage and the like caused by bolt fastening are avoided, the service life of the leakage detection cover is effectively prolonged, and the disassembly and assembly efficiency of the leakage detection cover is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship pipeline detection auxiliary equipment, in particular to a ship pipeline negative pressure leak detection cover. Background Art

[0002] The ship's pipeline negative pressure leak detection hood is a device specially designed to detect potential leaks in ship piping systems. This device is often used during ship maintenance and overhaul to ensure the integrity of the piping system and the safe operation of the ship. By creating a negative pressure environment, the leak detection hood can help inspectors find tiny leaks that may be difficult to detect under normal pressure.

[0003] At present, most of the existing negative pressure leak detection covers are assembled and fixed with bolts. The salt spray and moisture in the marine environment may cause corrosion of the bolts and their contact surfaces. The corrosion may weaken the fastening force of the bolts and even cause the bolts to break. In this way, the correct position and sealing effect of the leak detection cover cannot be maintained. Frequent loading, unloading and transportation may cause wear of the bolts and fixing points, reducing the repeated service life of the leak detection cover. In order to solve this technical problem, the utility model proposes a ship pipeline negative pressure leak detection cover. Utility Model Content

[0004] The main purpose of the utility model is to provide a ship pipeline negative pressure leak detection cover, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A ship pipeline negative pressure leak detection cover comprises a valve, a No. 1 leak detection shell, a No. 1 assembly cylinder and a No. 2 assembly cylinder, two groups of No. 2 protrusions are provided on both sides of the No. 1 assembly cylinder, two groups of No. 1 protrusions are provided on both sides of the No. 2 assembly cylinder, a limit plate is provided on the top of the No. 2 protrusion, an arc-shaped groove is penetrated through the interior of the limit plate, a diagonal support plate is provided on one side of the limit plate, a convex column is provided on one side of the diagonal support plate, and the convex column movably penetrates the interior of the arc-shaped groove, a special-shaped plate is rotatably provided on one end of the diagonal support plate, and the special-shaped plate is an inverted T-shape, and the special-shaped plate movably penetrates the interior of the No. 1 protrusion.

[0007] Preferably, the valve is arranged inside the No. 1 leak detection shell, the No. 1 assembly cylinder and the No. 2 assembly cylinder are both arranged outside the valve, and the No. 1 assembly cylinder is arranged outside the No. 1 leak detection shell.

[0008] Preferably, a No. 2 leak detection shell is provided at the bottom end of the No. 1 leak detection shell, a limit frame is provided at the top end of the No. 2 leak detection shell, and the limit frame is inserted into the interior of the No. 1 leak detection shell, and the No. 2 assembly cylinder is provided outside the No. 2 leak detection shell.

[0009] Preferably, a conduit is provided through the top of the No. 1 leak detection shell, and a digital negative pressure gauge is provided at the other end of the conduit.

[0010] Preferably, a No. 1 rubber ring is provided on the inner side of the No. 1 assembly cylinder, and the No. 1 rubber ring contacts the outer side of the valve pipe, and a No. 2 rubber ring is provided on the inner side of the No. 2 assembly cylinder, and the No. 2 rubber ring contacts the outer side of the valve pipe.

[0011] Preferably, a limiting shell is provided at the top of the No. 2 protrusion, and two sets of springs are provided on the inner wall of the limiting shell. A through slot is provided through the top of the limiting shell, and a sliding plate is provided at the other end of the spring. The sliding plate is an L-shaped plate inserted into the interior of the diagonal support plate, and the sliding plate moves through the interior of the through slot.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The cam is then rotated to move the lever arm and the lever arm is moved along the L-shaped groove to move the lever arm back and forth, so that the lever arm can be moved in a direction that will not cause any breakage or rupture, thereby effectively preventing the lever arm from sliding downwards and causing the lever arm to move in a direction that will not cause any breakage or rupture, thereby effectively preventing the lever arm from sliding downwards and causing the lever arm to move in a direction that will not cause any breakage or rupture, thereby effectively preventing the lever arm from sliding downwards and causing the lever arm to move in a direction that will not cause any breakage or rupture, and thereby effectively improving the service life and assembly and disassembly efficiency of the leak detection cover.

[0014] In the utility model, by providing components such as a sliding plate, the through groove can be used to linearly limit the sliding plate to move inside the limit shell. After the inclined support plate is pressed down and contacts the top surface of the No. 2 protrusion, the elastic action of the spring is used to push one end of the sliding plate into the interior of the inclined support plate, so that the inclined support plate can be positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a negative pressure leak detection cover for ship pipelines according to the present utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a No. 1 leak detection shell of a negative pressure leak detection cover for ship pipelines of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the No. 1 leak detection shell and the No. 2 leak detection shell of a ship pipeline negative pressure leak detection cover of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the diagonal support plate of a negative pressure leak detection cover for ship pipelines in the utility model;

[0019] Figure 5 This is a structural schematic diagram of the No. 1 assembly tube of a negative pressure leak detection cover for ship pipelines of the utility model;

[0020] Figure 6 This utility model is a ship pipeline negative pressure leak detection cover Figure 5 Schematic diagram of the enlarged local structure at point A.

[0021] In the figure: 1. valve; 2. leak detection shell No. 1; 3. catheter; 4. digital negative pressure gauge; 5. assembly cylinder No. 1; 6. rubber ring No. 1; 7. leak detection shell No. 2; 8. limit frame; 9. assembly cylinder No. 2; 10. rubber ring No. 2; 11. protrusion No. 1; 12. limit plate; 13. arc groove; 14. diagonal support plate; 15. protrusion; 16. special-shaped plate; 17. limit shell; 18. spring; 19. through groove; 20. sliding plate; 21. protrusion No. 2. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a ship pipeline negative pressure leak detection cover;

[0024] It includes a valve 1, a No. 1 leak detection shell 2, a No. 1 assembly cylinder 5 and a No. 2 assembly cylinder 9. Two groups of No. 2 protrusions 21 are provided on both sides of the No. 1 assembly cylinder 5, and two groups of No. 1 protrusions 11 are provided on both sides of the No. 2 assembly cylinder 9. A limiting plate 12 is provided on the top of the No. 2 protrusion 21. An arc-shaped groove 13 is penetrated through the interior of the limiting plate 12. A diagonal support plate 14 is provided on one side of the limiting plate 12. A boss 15 is provided on one side of the diagonal support plate 14, and the boss 15 movably passes through the interior of the arc groove 13. A special-shaped plate 16 is rotatably provided at one end of the diagonal support plate 14, and the special-shaped plate 16 is an inverted T-shape. The special-shaped plate 16 movably passes through the interior of the No. 1 protrusion 11.

[0025] After the No. 1 assembly cylinder 5 and the No. 2 assembly cylinder 9 are assembled, they can be set on the external pipe of the valve 1. The No. 2 protrusion 21 is symmetrically arranged on both sides of the No. 1 assembly cylinder 5, and the No. 1 protrusion 11 is symmetrically arranged on both sides of the No. 2 assembly cylinder 9. A groove for the special-shaped plate 16 to pass through is opened inside the No. 1 protrusion 11. After the No. 1 assembly cylinder 5 and the No. 2 assembly cylinder 9 are connected, the No. 2 protrusion 21 is located above the No. 1 protrusion 11. After the L-shaped special-shaped plate 16 is movable through the groove inside the No. 1 protrusion 11, the No. 2 protrusion 21 is further inserted through the inclined The boss 15 set on one side of the support plate 14 is movable and passes through the arc groove 13 inside the limiting plate 12. The arc groove 13 inside the limiting plate 12 can limit the inclined support plate 14 to move and rotate. After pressing down the inclined support plate 14, the boss 15 inside the arc groove 13 is used as the rotation point. As the inclined support plate 14 is pressed down, the special-shaped plate 16 can be used to squeeze the No. 1 protrusion 11 and the No. 2 protrusion 21 to move closer, thereby realizing the splicing of the No. 1 assembly tube 5 and the No. 2 assembly tube 9, so that the No. 1 leak detection shell 2 and the No. 2 leak detection shell 7 are assembled.

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a ship pipeline negative pressure leak detection cover;

[0027] The valve 1 is arranged inside the No. 1 leak detection shell 2, and the No. 1 assembly cylinder 5 and the No. 2 assembly cylinder 9 are both arranged on the outside of the valve 1. The No. 1 assembly cylinder 5 is arranged on the outside of the No. 1 leak detection shell 2, and the No. 2 leak detection shell 7 is arranged at the bottom end of the No. 1 leak detection shell 2. The top of the No. 2 leak detection shell 7 is provided with a limit frame 8, and the limit frame 8 is inserted into the interior of the No. 1 leak detection shell 2. The No. 2 assembly cylinder 9 is arranged on the outside of the No. 2 leak detection shell 7, and a conduit 3 is provided through the top of the No. 1 leak detection shell 2. The other end of the conduit 3 is provided with a digital negative pressure gauge 4. The No. 1 rubber ring 6 is provided on the inside of the No. 1 assembly cylinder 5, and the No. 1 rubber ring 6 is in contact with the outside of the valve 1 pipeline. The No. 2 assembly cylinder 9 is provided with a No. 2 rubber ring 10, and the No. 2 rubber ring 10 is in contact with the outside of the valve 1 pipeline.

[0028] After the No. 1 and No. 2 leak detection shells 7 are assembled, the limit frame 8 on the top of the No. 2 leak detection shell 7 is inserted into the interior of the No. 1 leak detection shell 2, and the No. 1 rubber ring 6 and the No. 2 rubber ring 10 are squeezed and pressed tightly against the valve 1 pipeline. The No. 1 and No. 2 rubber rings 10 are squeezed and deformed, so that the connection between the No. 1 and No. 2 assembly cylinders 5 and 9 and the valve 1 pipeline can be sealed. Before the No. 1 and No. 2 leak detection shells 2 and 7 are assembled, strong glue can be applied to the inside of the No. 1 and No. 2 rubber rings 10 to increase the sealing performance of the No. 1 and No. 2 assembly cylinders 5 and 9 and the valve 1 pipeline. After the No. 1 and No. 2 leak detection shells 7 are assembled, the upper end of the No. 1 leak detection shell 2 is completely sealed and connected to the digital negative pressure gauge 4. The No. 1 and No. 2 leak detection shells 2 and 7 are used to tightly cover the valves, flanges and other components to be tested of the vacuum system. This creates a space consisting of the inner surface of the cover and the outer surface of the object being measured. Once a leak hole appears in the object being measured, this space is connected to the vacuum system through the leak hole. By detecting the pressure change in this space, the extent of the leak in the object being measured can be determined.

[0029] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a ship pipeline negative pressure leak detection cover;

[0030] A limit shell 17 is provided at the top of the second protrusion 21, and two sets of springs 18 are provided on the inner wall of the limit shell 17. A through slot 19 is opened through the top of the limit shell 17, and a sliding plate 20 is provided at the other end of the spring 18. The sliding plate 20 is an L-shaped plate inserted into the interior of the diagonal support plate 14, and the sliding plate 20 moves through the interior of the through slot 19.

[0031] The limiting shell 17 is located in front of the diagonal support plate 14, and the L-shaped sliding plate 20 is movably arranged inside the limiting shell 17 by the spring 18, and the sliding plate 20 is movable through the interior of the through slot 19. The through slot 19 can linearly limit the sliding plate 20 to move inside the limiting shell 17. After the diagonal support plate 14 is pressed down and contacts the top surface of the No. 2 protrusion 21, the elastic action of the spring 18 is used to push one end of the sliding plate 20 into the interior of the diagonal support plate 14, so that the diagonal support plate 14 can be positioned.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A ship pipeline negative pressure leak detection cover, comprising a valve (1), a No. 1 leak detection shell (2), a No. 1 assembly cylinder (5) and a No. 2 assembly cylinder (9), characterized in that: Two groups of No. 2 protrusions (21) are provided on both sides of the No. 1 assembly cylinder (5), and two groups of No. 1 protrusions (11) are provided on both sides of the No. 2 assembly cylinder (9). A limit plate (12) is provided on the top of the No. 2 protrusion (21), and an arc groove (13) is provided inside the limit plate (12). A diagonal support plate (14) is provided on one side of the limit plate (12), and a convex column (15) is provided on one side of the diagonal support plate (14), and the convex column (15) is movable through the inside of the arc groove (13). A special-shaped plate (16) is rotatably provided on one end of the diagonal support plate (14), and the special-shaped plate (16) is an inverted T-shape. The special-shaped plate (16) is movable through the inside of the No. 1 protrusion (11).

2. A ship pipeline negative pressure leak detection cover according to claim 1, characterized in that: The valve (1) is arranged inside the No. 1 leak detection shell (2), the No. 1 assembly cylinder (5) and the No. 2 assembly cylinder (9) are both arranged outside the valve (1), and the No. 1 assembly cylinder (5) is arranged outside the No. 1 leak detection shell (2).

3. The negative pressure leak detection cover for ship pipelines according to claim 1, characterized in that: A No. 2 leak detection shell (7) is provided at the bottom end of the No. 1 leak detection shell (2), a limit frame (8) is provided at the top end of the No. 2 leak detection shell (7), and the limit frame (8) is inserted into the interior of the No. 1 leak detection shell (2), and the No. 2 assembly cylinder (9) is provided on the outside of the No. 2 leak detection shell (7).

4. A ship pipeline negative pressure leak detection cover according to claim 3, characterized in that: A conduit (3) is provided through the top end of the No. 1 leak detection shell (2), and a digital negative pressure gauge (4) is provided at the other end of the conduit (3).

5. The negative pressure leak detection cover for ship pipelines according to claim 1, characterized in that: A No. 1 rubber ring (6) is provided on the inner side of the No. 1 assembly cylinder (5), and the No. 1 rubber ring (6) contacts the outer side of the valve (1) pipeline. A No. 2 rubber ring (10) is provided on the inner side of the No. 2 assembly cylinder (9), and the No. 2 rubber ring (10) contacts the outer side of the valve (1) pipeline.

6. The negative pressure leak detection cover for ship pipelines according to claim 1, characterized in that: A limit shell (17) is provided at the top of the second protrusion (21), and two sets of springs (18) are provided on the inner wall of the limit shell (17). A through slot (19) is provided through the top of the limit shell (17), and a sliding plate (20) is provided at the other end of the spring (18), and the sliding plate (20) is an L-shaped plate inserted into the interior of the diagonal support plate (14), and the sliding plate (20) is movable through the interior of the through slot (19).

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