A weld joint air tightness detection device for a ship

Abstract

The application belongs to the technical field of air tightness detection, and particularly relates to a welding seam air tightness detection equipment for a ship, which aims at the situation that improper operation and detection misjudgment are prone to occur due to heavy repeated work in manual detection, and proposes the following scheme, which comprises a main frame, two L-shaped vertical seats in a symmetrical upper and lower arrangement are fixedly connected to the upper side of the main frame, an upper plate is fixedly connected between the two L-shaped vertical seats, a displacement groove is formed in the upper plate, two flat rails are fixedly connected to the surface of the upper plate and symmetrically distributed on the two sides of the displacement groove, and an air tightness detection module is arranged on the upper plate. The welding seam air tightness detection equipment for a ship can detect the welding seam air tightness of the assembled ship, and can replace the traditional manual detection operation with a machine, thereby solving the problem of lack of equipment for detecting the welding seam of the assembled ship, and effectively avoiding the problems of uneven soap water spraying and misjudgment caused by heavy repeated detection work in the traditional manual detection.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing technology, and in particular to an airtightness testing device for welds used in ships. Background Technology

[0002] Ships are a general term for all kinds of vessels, which are means of transportation that can navigate or anchor in waterways for transport or operations. They have different technical performance, equipment and structural types according to different usage requirements. In order to avoid the risk of capsizing due to water ingress, it is necessary to ensure the airtightness of the hull, especially the sealing of the hull welds.

[0003] Because the assembled ships are large and the welds are located in complex positions, there is currently a lack of specific testing equipment. The only way to test them is by spraying soapy water manually. However, manual testing is prone to errors and misjudgments due to repetitive and heavy work, which reduces the accuracy of weld airtightness testing. Summary of the Invention

[0004] This invention discloses a weld airtightness testing device for ships, which aims to solve the technical problem in the background art of poor testing results due to the lack of specific testing equipment.

[0005] This invention proposes a ship weld airtightness testing device, comprising a main frame, two symmetrical L-shaped supports fixedly connected to the upper side of the main frame, an upper plate fixedly connected between the two L-shaped supports, and a shifting groove provided on the upper plate. Two flat rails are fixedly connected to the surface of the upper plate, symmetrically distributed on both sides of the shifting groove. An airtightness testing module is provided on the upper plate, the airtightness testing module comprising a shifting seat slidably connected to the two flat rails, and a spray seat fixedly connected to the shifting seat, the spray seat being located in the shifting groove, a nozzle fixedly connected to the spray seat, and a threaded through hole provided on the spray seat. A drive motor is fixedly connected to one L-shaped support, the output end of the drive motor is connected to a lead screw through a coupling, and the other end of the lead screw is movably connected to the other L-shaped support through the threaded through hole of the spray seat. Two symmetrical liquid collection cylinders are fixedly connected to the side of the shifting seat away from the spray seat. The same three-way infusion pipe is fixedly connected to the two liquid collection cylinders. The other end of the three-way infusion pipe is fixedly connected to the spray seat. Two symmetrical sleeves are fixedly connected to the L-shaped upright seat near the drive motor. Corrugated infusion pipes are fixedly connected inside the two sleeves. The other ends of the two corrugated infusion pipes are fixedly connected to the two liquid collection cylinders respectively. Two inlet pipes are fixedly connected to the L-shaped upright seat on the same side. The two inlet pipes are respectively connected to the two corrugated infusion pipes.

[0006] In a preferred embodiment, an inner plate is fixedly connected to the lower side of the upper plate. The inner plate is located beside the shifting slot, and multiple equidistant image acquisition devices are fixedly connected to the inner plate.

[0007] In a preferred embodiment, an auxiliary detection component is provided on the lower side of the upper plate; The auxiliary detection component includes a fixed top frame and a movable base frame. The fixed top frame is fixedly connected to the lower side of the upper plate. A rubber sleeve is fixedly connected to the fixed top frame. The lower side of the rubber sleeve is fixedly connected to the movable base frame. An embedded groove is opened on the lower side of the movable base frame. An air cushion is fixedly connected inside the embedded groove. A first control valve is fixedly connected to the movable base frame. The first control valve is connected to the inner cavity of the air cushion through a hose. The movable base frame is provided with three sets of symmetrical protrusions in pairs, and three sets of symmetrical mounting brackets in pairs are fixedly connected to the main frame. Each mounting bracket is fixedly connected with a push-type hydraulic cylinder, and the telescopic end of the push-type hydraulic cylinder is fixedly connected downward to the corresponding protrusion.

[0008] In a preferred embodiment, a sealing cover is provided on the upper side of the upper plate, the sealing cover is fixedly connected between the two L-shaped supports, and a sealing strip is provided between the sealing cover and the upper plate and the two L-shaped supports.

[0009] In a preferred embodiment, two vertically symmetrical supports are provided below the main frame, and two horizontally symmetrical suction cups are fixedly connected to each of the two supports, with a second control valve provided on each suction cup.

[0010] In a preferred embodiment, an adaptive adjustment assembly is provided between the main frame and the two support frames; The adaptive adjustment assembly includes a middle layer plate located between the main frame and the support frame. A vertical frame is fixedly connected to the middle layer plate. The support frame has a slot, and the vertical frame is movably connected to the slot. An adjustable hydraulic cylinder is fixedly connected to the upper side of the support frame. The telescopic end of the adjustable hydraulic cylinder is fixedly connected upward to the lower surface of the middle layer plate. A spherical seat is fixedly connected to the upper surface of the middle layer plate. A rotating sleeve is fixedly connected to the lower surface of the main frame. The spherical seat is movably connected to the rotating sleeve. Four symmetrical return springs are provided on the outside of the spherical seat. The upper and lower ends of the return springs are fixedly connected to the lower surface of the main frame and the upper surface of the middle layer plate, respectively.

[0011] As can be seen from the above, the ship weld air tightness testing equipment provided by the present invention can perform weld air tightness testing on ships after assembly, replacing traditional manual testing operations with machinery, solving the problem of lack of equipment for weld testing of assembled ships, and effectively avoiding the problems of uneven soap water spraying and repetitive testing operations that are prone to misjudgment in traditional manual testing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the operational state structure of a ship weld airtightness testing device proposed in this invention. Figure 2 This is a schematic diagram of the overall structure of a ship weld airtightness testing device proposed in this invention. Figure 3 This is a partial cross-sectional view of a ship weld airtightness testing device proposed in this invention. Figure 4 This is a schematic diagram of the main frame and support structure of a ship weld airtightness testing device proposed in this invention; Figure 5 This is a schematic diagram of the displacement seat structure of a ship weld airtightness testing device proposed in this invention; Figure 6 This is a schematic diagram of the auxiliary testing component structure of a ship weld airtightness testing device proposed in this invention; Figure 7 This is a cross-sectional structural schematic diagram of the auxiliary testing component of a marine weld airtightness testing device proposed in this invention; Figure 8 This is a schematic diagram of the adaptive adjustment component structure of a ship weld airtightness testing device proposed in this invention.

[0013] In the diagram: 1. Main frame; 2. L-shaped stand; 3. Top plate; 4. Flat rail; 5. Shifting groove; 6. Air tightness testing module; 601. Shifting seat; 602. Spray holder; 603. Spray head; 604. Drive motor; 605. Lead screw; 606. Liquid collection cylinder; 607. Three-way infusion pipe; 608. Sleeve; 609. Inlet pipe; 610. Corrugated infusion pipe; 7. Internal plate; 8. Image acquisition device; 9. Auxiliary testing components; 901. Fixed top frame; 902. Retractable base frame; 903. Rubber sleeve; 904. Air cushion; 905. First control valve; 906. Boss; 907. Mounting bracket; 908. Push-type hydraulic cylinder; 10. Enclosed cover; 11. Support frame; 12. Suction cup; 13. Second control valve; 14. Adaptive adjustment assembly; 1401. Middle layer plate; 1402. Vertical frame; 1403. Adjustable hydraulic cylinder; 1404. Spherical seat; 1405. Rotating sleeve; 1406. Return spring. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0015] The airtightness testing equipment for ship welds disclosed in this invention is mainly used in scenarios where the lack of specific testing equipment leads to poor testing results.

[0016] Reference Figures 1-8A ship weld airtightness testing device includes a main frame 1. Two symmetrically arranged L-shaped supports 2 are fixedly connected to the upper side of the main frame 1. An upper plate 3 is fixedly connected between the two L-shaped supports 2, and a displacement groove 5 is formed on the upper plate 3. Two horizontal rails 4 are fixedly connected to the surface of the upper plate 3, symmetrically distributed on both sides of the displacement groove 5. An airtightness testing module 6 is mounted on the upper plate 3, and the airtightness testing module 6 includes a displacement seat 601, which slides... The spray seat 602 is fixedly connected to two flat rails 4 and the shifting seat 601 is located in the shifting groove 5. The spray head 603 is fixedly connected to the spray seat 602. The spray seat 602 has a threaded through hole. The drive motor 604 is fixedly connected to one side of the L-shaped stand 2. The output end of the drive motor 604 is connected to the lead screw 605 through the coupling. The other end of the lead screw 605 passes through the threaded through hole of the spray seat 602 and is movably connected to the L-shaped stand 2 on the other side. Two symmetrical liquid collection cylinders 606 are fixedly connected to the side of the shifting seat 601 away from the spray seat 602. The same three-way infusion pipe 607 is fixedly connected to the two liquid collection cylinders 606. The other end of the three-way infusion pipe 607 is fixedly connected to the spray seat 602. Two symmetrical sleeves 608 are fixedly connected to the L-shaped stand 2 on the side close to the drive motor 604. Corrugated infusion pipes 610 are fixedly connected inside the two sleeves 608. The other ends of the two corrugated infusion pipes 610 are fixedly connected to the two liquid collection cylinders 606 respectively. Two inlet pipes 609 are fixedly connected to the L-shaped stand 2 on the same side. The two inlet pipes 609 are connected to the two corrugated infusion pipes 610 respectively.

[0017] Specifically, during the test, the main frame 1 is fixed at the weld position, the drive motor 604 is started to drive the lead screw 605 to rotate, the shift seat 601 moves from bottom to top in the shift groove 5, and the nozzle 603 sprays the soap water in the liquid collection cylinder 606 onto the weld to test the airtightness of the weld. In specific application scenarios, the air tightness testing module 6 is suitable for the air tightness testing of welds on assembled ships. That is, the air tightness testing module can perform air tightness testing on welds on assembled ships, replacing traditional manual testing with mechanical methods. This solves the problem of the lack of equipment for weld testing on assembled ships and effectively avoids the problems of uneven soap water spraying and repetitive testing that are prone to misjudgment. The shift seat 601 moves from bottom to top to spray soapy water, which can further improve the coverage of the soapy water on the weld and reduce the occurrence of uneven spraying. The corrugated infusion tube 610 can meet the soap water delivery needs when the displacement seat 601 moves, and the inlet tube 609 is connected to the external soap water delivery tube to ensure the supply of soap water.

[0018] Reference Figure 2 and Figure 7 In a preferred embodiment, an inner plate 7 is fixedly connected to the lower side of the upper plate 3. The inner plate 7 is located beside the shifting groove 5, and a plurality of equidistant image acquisition devices 8 are fixedly connected to the inner plate 7.

[0019] Specifically, during the inspection process, the image acquisition device 8 continuously acquires images of the weld position; by using the image acquisition device 8 instead of traditional manual observation, the occurrence of misjudgments is reduced, and the accuracy of the inspection results is effectively guaranteed.

[0020] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7 In a preferred embodiment, an auxiliary detection component 9 is provided on the lower side of the upper plate 3; The auxiliary detection component 9 includes a fixed top frame 901 and a movable base frame 902. The fixed top frame 901 is fixedly connected to the lower side of the upper plate 3. A rubber sleeve 903 is fixedly connected to the fixed top frame 901. The lower side of the rubber sleeve 903 is fixedly connected to the movable base frame 902. An embedded groove is provided on the lower side of the movable base frame 902. An air cushion 904 is fixedly connected inside the embedded groove. A first control valve 905 is fixedly connected to the movable base frame 902. The first control valve 905 is connected to the inner cavity of the air cushion 904 through a hose. The movable base frame 902 is provided with three sets of symmetrical bosses 906, and the main frame 1 is fixedly connected with three sets of symmetrical mounting brackets 907. Each mounting bracket 907 is fixedly connected with a push-type hydraulic cylinder 908, and the telescopic end of the push-type hydraulic cylinder 908 is fixedly connected downward to the corresponding bosses 906.

[0021] Specifically, after the initial inspection, multiple sets of push-type hydraulic cylinders 908 are activated simultaneously to push the movable base frame 902 to the surface of the ship. After the rubber sleeve 903 extends, it covers the weld position. Then, the first control valve 905 is activated to inflate the air cushion 904 to achieve the sealing of the weld position. After completion, the air tightness test steps are repeated to conduct a deeper test on the air tightness of the weld. In specific application scenarios, the auxiliary detection component 9 is suitable for the in-depth detection of the airtightness of ship welds. That is, the auxiliary detection component 9 can perform in-depth detection of the airtightness of ship welds. It sprays soapy water again to detect the airtightness of the weld by sealing the outer area of ​​the weld. This increases the air pressure difference between the inside and outside of the weld (when the airtightness of the weld is problematic, the air pressure difference between the inside and outside of the cabin will be more obvious after the weld area is sealed). This further improves the effect of the soapy water on the weld. The three sets of push-type hydraulic cylinders 908 are independently controlled, which can meet the inspection requirements of flat plates or plates with a certain curvature. The movable base frame 902 is deformable (the movable base frame 902 is a spliced ​​metal connecting frame), which ensures the external coverage requirements of the weld area. The rubber sleeve 903 allows for storage and extension, while the air cushion 904 improves the contact between the movable base 902 and the ship's surface, thereby achieving a seal in the external area of ​​the weld.

[0022] Reference Figure 1 , Figure 3 and Figure 4 In a preferred embodiment, a sealing cover 10 is provided on the upper side of the upper plate 3. The sealing cover 10 is fixedly connected between the two L-shaped supports 2, and a sealing strip is provided between the sealing cover 10 and the upper plate 3 and the two L-shaped supports 2.

[0023] The enclosure 10 is used to seal the displacement groove 5 area of ​​the upper plate 3, satisfying the movement of the displacement seat 601 and the supply of external soap water while ensuring the sealing of the upper plate 3 area, which facilitates the effective implementation of subsequent depth detection. The enclosure 10 is equipped with tempered glass, which can monitor whether the components inside the enclosure are operating normally.

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, two vertically symmetrical support frames 11 are provided below the main frame 1, and two horizontally symmetrical suction cups 12 are fixedly connected to each of the two support frames 11, and each suction cup 12 is provided with a second control valve 13.

[0025] Specifically, the support 11 is placed at the upper and lower ends of the weld position and fixed by the suction cup 12. The method of fixing by the suction cup 12 can ensure the stability of the installation while meeting the requirements of quick disassembly and assembly, and improve the overall inspection efficiency.

[0026] Reference Figure 1 , Figure 2 , Figure 4 and Figure 8 In a preferred embodiment, an adaptive adjustment component 14 is provided between the main frame 1 and the two support frames 11; The adaptive adjustment assembly 14 includes a middle layer plate 1401, which is located between the main frame 1 and the support frame 11. A vertical frame 1402 is fixedly connected to the middle layer plate 1401. A slot is provided on the support frame 11, and the vertical frame 1402 is movably connected to the slot. An adjustable hydraulic cylinder 1403 is fixedly connected to the upper side of the support frame 11. The telescopic end of the adjustable hydraulic cylinder 1403 is fixedly connected upward to the lower surface of the middle layer plate 1401. A spherical seat 1404 is fixedly connected to the upper surface of the middle layer plate 1401. A rotating sleeve 1405 is fixedly connected to the lower surface of the main frame 1. The spherical seat 1404 is movably connected to the rotating sleeve 1405. Four symmetrically arranged return springs 1406 are provided on the outside of the spherical seat 1404. The upper and lower ends of the return springs 1406 are fixedly connected to the lower surface of the main frame 1 and the upper surface of the middle layer plate 1401, respectively.

[0027] Specifically, after the support frame 11 is installed, the position of the main frame 1 is adjusted according to the external curvature of the ship. That is, the adjustment hydraulic cylinder 1403 is activated to extend and retract, driving the middle plate 1401 to rise and fall, changing the height of the main frame 1 to meet the requirements of the inspection operation. In specific application scenarios, the adaptive adjustment component 14 is suitable for adjusting the detection height of the main frame 1. That is, the adaptive adjustment component 14 can adjust the height of the main frame 1 according to the actual surface conditions of the ship where the weld is located, so as to meet the detection requirements of different ship surfaces and improve the applicability of the device. The adjustable hydraulic cylinder 1403 is used to change the height of the middle layer plate 1401, thereby directly changing the height of the main frame 1; The main frame 1 and the middle plate 1401 are connected by a movable connection, which can change the installation range of the main frame 1 according to the actual situation to meet the inspection requirements of ship surfaces with different curvatures; the return spring 1406 can assist the main frame 1 structure to return to its original position.

[0028] Working principle: When in use, the support frame 11 is placed at the upper and lower ends of the weld position and fixed by the suction cup 12. The position of the main frame 1 is adjusted according to the external curvature of the ship. That is, the adjustment hydraulic cylinder 1403 is activated to extend and retract, driving the middle plate 1401 to rise and fall, changing the height of the main frame 1 to meet the inspection operation requirements. During the initial inspection, the drive motor 604 is started to drive the lead screw 605 to rotate, the shift seat 601 moves from bottom to top in the shift groove 5, and the nozzle 603 sprays the soap water in the collection cylinder 606 onto the weld to test the airtightness of the weld. During the inspection process, the image acquisition device 8 continuously acquires images of the weld position. After the initial inspection, multiple sets of push-type hydraulic cylinders 908 are activated simultaneously to push the movable base frame 902 to the surface of the ship. After the rubber sleeve 903 extends, it covers the weld position. Then, the first control valve 905 is activated to inflate the air cushion 904 to achieve the sealing of the weld position. After completion, the air tightness test steps are repeated to conduct a deeper test on the air tightness of the weld.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A weld airtightness testing device for ships, comprising a main frame (1), characterized in that, The upper side of the main frame (1) is fixedly connected to two L-shaped uprights (2) that are symmetrically arranged vertically. An upper plate (3) is fixedly connected between the two L-shaped uprights (2), and a shifting groove (5) is provided on the upper plate (3). Two flat rails (4) are fixedly connected to the surface of the upper plate (3). The flat rails (4) are symmetrically distributed on both sides of the shifting groove (5). An airtightness detection module (6) is provided on the upper plate (3). The airtightness detection module (6) includes a shifting seat (601), which is slidably connected to the two flat rails (4). Above, and a spray seat (602) is fixedly connected to the shift seat (601). The spray seat (602) is located in the shift groove (5). A nozzle (603) is fixedly connected to the spray seat (602). A threaded through hole is provided on the spray seat (602). A drive motor (604) is fixedly connected to one side of the L-shaped stand (2). The output end of the drive motor (604) is connected to a lead screw (605) through a coupling. The other end of the lead screw (605) passes through the threaded through hole of the spray seat (602) and is movably connected to the L-shaped stand (2) on the other side. An auxiliary detection component (9) is provided on the lower side of the upper plate (3). The auxiliary detection component (9) includes a fixed top frame (901) and a movable base frame (902). The fixed top frame (901) is fixedly connected to the lower side of the upper plate (3). A rubber sleeve (903) is fixedly connected to the fixed top frame (901). The lower side of the rubber sleeve (903) is fixedly connected to the movable base frame (902). An embedded groove is provided on the lower side of the movable base frame (902). An air cushion (904) is fixedly connected inside the embedded groove. A first control valve (905) is fixedly connected to the movable base frame (902), and the inner cavity of the first control valve (905) is connected to the air cushion (904) through a hose; the movable base frame (902) is provided with three sets of symmetrically arranged protrusions (906), and the main frame (1) is fixedly connected with three sets of symmetrically arranged mounting brackets (907). Each mounting bracket (907) is fixedly connected with a push-type hydraulic cylinder (908), and the telescopic end of the push-type hydraulic cylinder (908) is fixedly connected downward to the corresponding protrusion (906); An adaptive adjustment assembly (14) is provided between the main frame (1) and the two support frames (11); the adaptive adjustment assembly (14) includes a middle plate (1401), which is located between the main frame (1) and the support frames (11). A vertical frame (1402) is fixedly connected to the middle plate (1401). A slot is provided on the support frame (11), and the vertical frame (1402) is movably connected to the slot. An adjustable hydraulic cylinder (1403) is fixedly connected to the upper side of the support frame (11). The telescopic end is fixedly connected to the lower surface of the middle plate (1401) and the upper surface of the middle plate (1401) is fixedly connected to a spherical seat (1404). The lower surface of the main frame (1) is fixedly connected to a rotating sleeve (1405). The spherical seat (1404) is movably connected inside the rotating sleeve (1405). Four symmetrical return springs (1406) are provided on the outside of the spherical seat (1404). The upper and lower ends of the return springs (1406) are fixedly connected to the lower surface of the main frame (1) and the upper surface of the middle plate (1401) respectively.

2. The ship weld airtightness testing equipment according to claim 1, characterized in that, Two symmetrical liquid collection cylinders (606) are fixedly connected to the side of the shifting seat (601) away from the spray seat (602). The same three-way infusion pipe (607) is fixedly connected to the two liquid collection cylinders (606). The other end of the three-way infusion pipe (607) is fixedly connected to the spray seat (602). Two symmetrical sleeves (608) are fixedly connected to the L-shaped stand (2) on the side close to the drive motor (604). Corrugated infusion pipes (610) are fixedly connected inside the two sleeves (608). The other ends of the two corrugated infusion pipes (610) are fixedly connected to the two liquid collection cylinders (606). Two inlet pipes (609) are fixedly connected to the L-shaped stand (2) on the same side. The two inlet pipes (609) are connected to the two corrugated infusion pipes (610) respectively.

3. The ship weld airtightness testing equipment according to claim 1, characterized in that, An inner plate (7) is fixedly connected to the lower side of the upper plate (3). The inner plate (7) is located on the side of the shifting groove (5), and multiple equidistant image acquisition devices (8) are fixedly connected to the inner plate (7).

4. The ship weld airtightness testing equipment according to claim 1, characterized in that, The upper side of the upper plate (3) is provided with a sealing cover (10), which is fixedly connected between the two L-shaped supports (2), and a sealing strip is provided between the sealing cover (10) and the upper plate (3) and the two L-shaped supports (2).

5. The ship weld airtightness testing equipment according to claim 1, characterized in that, The main frame (1) has two vertically symmetrical support frames (11) below it, and two horizontally symmetrical suction cups (12) are fixedly connected to each support frame (11), and each suction cup (12) is equipped with a second control valve (13).

Images