Ship stern shaft tube water pressure leakage test workbench

Abstract

The utility model relates to the technical field of leakage testing, in particular to a ship stern shaft tube water pressure leakage testing workbench which comprises a base, positioning plates and sealing plates are arranged on the two sides of the top of the base, the two sealing plates are located between the two positioning plates, the bottom face of one positioning plate is fixedly connected with one side of the top face of the base, and the other positioning plate is fixedly connected with the other side of the top face of the base. The opposite faces of the two positioning plates are fixedly connected with a plurality of jacks, and the side faces of the sealing plates are in transmission connection with the output ends of the adjacent jacks. According to the tail shaft tube sealing device, the side faces of the sealing plates are in transmission connection with the output end of the jack, the sealing plates can move towards the tail shaft tube through the jack, the sealing rings on the sealing plates make contact with the end of the tail shaft tube, and therefore the interior of the tail shaft tube is sealed, the tail shaft tube is clamped by the two sealing plates through the jack, and the interior of the tail shaft tube can be conveniently and rapidly sealed; and the sealing plate is relatively simple to mount and dismount, so that the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage testing, in particular to a water pressure leakage testing workbench for a ship stern tube. Background Technique

[0002] The ship stern tube is an important component in the ship shafting system. The stern tube is fixed at the rear of the hull, enabling the stern shaft to pass through the stern tube. A sealing and supporting device is installed inside the stern tube to protect the stern shaft from seawater corrosion through the stern tube and ensure the sealing of the hull. Therefore, the sealing requirement of the stern tube itself is particularly important. During the process of manufacturing the stern tube, it is necessary to conduct a watertight test on the welded stern tube to detect whether there is any leakage in the stern tube. When testing the leakage of the stern tube, usually bolts or the like are used to fix the sealing plate at both ends of the stern tube, and the inside of the stern tube is sealed through the sealing plate. Then, water is introduced into the stern tube through the water inlet pipe on the sealing plate to test whether there is any leakage inside the stern tube within a certain period of time. However, when fixing the sealing plate at the end of the stern tube by means of bolt connection, since the diameter of the stern tube is relatively large, it is rather troublesome to fix and remove the sealing plate, resulting in a high labor intensity for the staff. Moreover, if the diameter of the sealing plate is larger than that of the stern tube, the sealing plate will support the stern tube, and the support pressure of the sealing plate is relatively large. Content of the Utility Model

[0003] The purpose of the utility model is to provide a water pressure leakage testing workbench for a ship stern tube to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A water pressure leakage testing workbench for a ship stern tube includes a base. On both sides of the top of the base, a positioning plate and a sealing plate are provided. The two sealing plates are located between the two positioning plates, and the bottom surface of one positioning plate is fixedly connected to one side of the top surface of the base. A plurality of jacks are fixedly connected to the opposite surfaces of the two positioning plates. The side surface of the sealing plate is in transmission connection with the output ends of the adjacent plurality of jacks. Sealing rings are fixedly connected to the opposite surfaces of the two sealing plates. Water pipes are communicated with the opposite surfaces of the two sealing plates, and valves are arranged inside the water pipes.

[0006] Furthermore: A pressure gauge is arranged on the side surface of one sealing plate.

[0007] Preferably: A support frame is fixedly connected to one side of the top surface of the base. The side surface of the support frame is fixedly connected to the side surface of one positioning plate. Diagonal braces fixedly connected to the side surface of one positioning plate are arranged on both sides of the support frame, and the bottom ends of the diagonal braces are fixedly connected to the top surface of the base.

[0008] Preferably, a connecting plate is slidably connected to the other side of the top surface of the base. The top surface of the connecting plate is fixedly connected to the bottom surface of another positioning plate. Two triangular plates fixedly connected to the side surface of another positioning plate are fixedly connected to the top surface of the connecting plate.

[0009] Furthermore, a plurality of circular holes are provided on both long sides of the top surface of the base. Two threaded holes I are provided on both sides of the top surface of the connecting plate corresponding to the circular holes. A positioning screw I is screwed into the inner side surface of the threaded hole I, and the end of the positioning screw passes through the interior of the adjacent circular hole.

[0010] Furthermore, support frames are slidably connected to both sides of the top surface of the base. Two sliding seats are slidably connected to the inner side surface of the support frame. A support seat is fixedly connected to the top surface of the sliding seat. A support block is rotatably connected to the inner side surface of the support seat. A bidirectional lead screw rotatably connected to the two sliding seats is rotatably connected to the inner side surface of the support frame.

[0011] Furthermore, side plates slidably connected to the top surface of the base are fixedly connected to both ends of the side surface of the support frame. A threaded hole II is provided in the side plate corresponding to the circular hole. A positioning screw II is screwed into the inner side surface of the threaded hole II, and the end of the positioning screw passes through the interior of the adjacent circular hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By drivingly connecting the side surface of the sealing plate to the output end of the jack, after placing the stern tube between the two sealing plates, the sealing plate can be moved towards the stern tube by the jack, so that the sealing ring on the sealing plate contacts the end of the stern tube, thereby sealing the interior of the stern tube. Then, water can be injected into the interior of the stern tube through a water pipe to test the sealing condition of the stern tube. Clamping the stern tube by the two sealing plates through the jack facilitates quickly sealing the interior of the stern tube. It is not necessary to use bolts to fix the sealing plate on the stern tube. Installing and removing the sealing plate are both relatively simple, which is beneficial to reducing the labor intensity of the staff. Moreover, the connecting plate can drive the positioning plate thereon to move on the base, so as to adapt to the testing of stern tubes with different lengths.

[0014] 2. By rotatably connecting a support block to the inner side surface of the support seat, the stern tube can be supported by the support block, and the distance between the two support blocks at the top of the support frame can be adjusted according to the diameter of the stern tube, so that the axis of the stern tube is as aligned with the axis of the sealing plate as possible. It is not necessary to rely on the sealing plate to support the stern tube, and stern tubes with different diameters can be supported. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of a water pressure leakage test workbench for a ship stern tube of the present utility model;

[0016] Figure 2It is a front view structural schematic diagram of the workbench in the present utility model;

[0017] Figure 3 It is a structural schematic diagram of the sealing plate in the present utility model;

[0018] Figure 4 It is an internal structural schematic diagram of the support frame in the present utility model.

[0019] In the figure: 1. Base; 11. Round hole; 2. Positioning plate; 21. Jack; 3. Support frame; 31. Diagonal brace; 4. Connecting plate; 41. Triangular plate; 42. First threaded hole; 5. Sealing plate; 51. Water pipe; 52. Sealing ring; 53. Valve; 6. Support frame; 61. Bidirectional lead screw; 62. Sliding seat; 63. Support seat; 64. Support block; 65. Side plate; 66. Second threaded hole; 7. First positioning screw; 8. Pressure gauge; 9. Second positioning screw. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , in the embodiment of the present utility model, a water pressure leakage test workbench for a ship stern tube includes a base 1. On both sides of the top of the base 1, there are a positioning plate 2 and a sealing plate 5. The two sealing plates 5 are located between the two positioning plates 2. One bottom surface of the positioning plate 2 is fixedly connected to one side of the top surface of the base 1. On the opposite surfaces of the two positioning plates 2, a plurality of jacks 21 are fixedly connected. The side surface of the sealing plate 5 is in transmission connection with the output ends of the adjacent plurality of jacks 21. On the opposite surfaces of the two sealing plates 5, sealing rings 52 are fixedly connected. On the opposite back surfaces of the two sealing plates 5, water pipes 51 are communicated. A valve 53 is arranged inside the water pipe 51. A pressure gauge 8 is arranged on the side surface of one sealing plate 5.

[0022] Specifically, after the stern tube is placed between the two sealing plates 5, the sealing plates 5 can be moved towards the stern tube by the jack 21, so that the sealing ring 52 contacts the end of the stern tube. In this way, the inside of the stern tube can be sealed by the sealing plates 5 and the sealing ring 52. At this time, the valve 53 can be opened, and water is injected into the stern tube through the water pipe 51 on one sealing plate 5. The air inside the stern tube can be discharged from the water pipe 51 on the other sealing plate 5. When the water surface inside the stern tube reaches the position of the water pipe 51 on the other sealing plate 5, the valve 53 on the other side of the top of the base 1 can be closed, and the inside of the water pipe 51 on the other sealing plate 5 can be sealed. At this time, water can continue to be injected into the stern tube through the water pipe 51 on one sealing plate 5, so as to increase the pressure inside the stern tube. The pressure inside the stern tube can be displayed by the pressure gauge 8. After the pressure inside the stern tube reaches the predetermined value, stop injecting water into the stern tube, and close the valve 53 in one water pipe 51 to keep the inside of the stern tube closed. If the pressure inside the stern tube does not leak within the specified time, the sealing test is qualified. Then, the valve 53 can be opened to drain the water inside the stern tube, and the sealing plate 5 can be moved away from the stern tube by the jack 21 to let the water inside the stern tube flow out. The two sealing plates 5 are clamped on the stern tube by the jack 21, which is convenient for quickly sealing the inside of the stern tube. There is no need to use bolts to fix the sealing plate 5 on the stern tube, and the installation and removal of the sealing plate 5 are relatively simple, which is beneficial to reducing the labor intensity of the staff.

[0023] Embodiment 1

[0024] As Figure 3 shown, in this embodiment, a support frame 3 is fixedly connected to one side of the top surface of the base 1. The side surface of the support frame 3 is fixedly connected to the side surface of a positioning plate 2. Diagonal braces 31 fixedly connected to the side surface of the positioning plate 2 are arranged on both sides of the support frame 3, and the bottom ends of the diagonal braces 31 are fixedly connected to the top surface of the base 1. A connecting plate 4 is slidably connected to the other side of the top surface of the base 1. The top surface of the connecting plate 4 is fixedly connected to the bottom surface of another positioning plate 2. Two triangular plates 41 fixedly connected to the side surface of another positioning plate 2 are fixedly connected to the top surface of the connecting plate 4.

[0025] During specific implementation, the support frame 3 can fix one positioning plate 2, the diagonal brace 31 can brace one positioning plate 2 obliquely, the connecting plate 4 can support another positioning plate 2, and the diagonal brace 31 can brace another positioning plate 2 obliquely, which is beneficial to improving the fixing stability of the positioning plate 2 and enabling the two sealing plates 5 to clamp the stern tube more stably.

[0026] As Figure 3 shown, in this embodiment, a number of round holes 11 are formed in both long sides of the top surface of the base 1. Two threaded holes 42 are formed on both sides of the top surface of the connecting plate 4 corresponding to the round holes 11. A positioning screw 7 is screwed into the inner side of the threaded hole 42, and the end of the positioning screw 7 passes through the inside of the adjacent round hole 11.

[0027] During specific implementation, the connecting plate 4 can be fixed to the top of the base 1 through the positioning screw 7, thereby restricting the position of the other positioning plate 2, enabling the two sealing plates 5 to clamp the stern tube relatively stably. Before testing, the positioning screw 7 can be screwed out from the first threaded hole 42, and then the positioning screw 7 can be removed from the corresponding circular hole 11. At this time, the connecting plate 4 can be moved on the top of the base 1, thereby adjusting the position of the connecting plate 4, and further adjusting the distance between the two sealing plates 5 according to the length of the stern tube, facilitating the testing of stern tubes of different lengths.

[0028] Embodiment 2

[0029] On the basis of Embodiment 1, as Figure 4 shown, in this embodiment, support frames 6 are slidably connected to both sides of the top surface of the base 1. Two sliding seats 62 are slidably connected to the inner side surface of the support frame 6. A support seat 63 is fixedly connected to the top surface of the sliding seat 62. A support block 64 is rotatably connected to the inner side surface of the support seat 63. A bidirectional lead screw 61 that is screwed with the two sliding seats 62 is rotatably connected to the inner side surface of the support frame 6. Side plates 65 that are slidably connected to the top surface of the base 1 are fixedly connected to both ends of the side surface of the support frame 6. A second threaded hole 66 is provided in the side plate 65 corresponding to the circular hole 11. A positioning screw 9 is screwed into the inner side surface of the second threaded hole 66, and the end of the positioning screw 9 passes through the interior of the adjacent circular hole 11.

[0030] During specific implementation, the support frame 6 can be fixed on the base 1 through the positioning screw II 9. The base 1 can support the support frame 6. The support frame 6 can support the support block 64 through the sliding seat 62 and the support seat 63. The bidirectional lead screw 61 can limit the position of the sliding seat 62, so as to maintain the distance between the two support blocks 64 through the bidirectional lead screw 61. Before testing, the stern tube can be lifted and placed on the two support blocks 64, so that the stern tube is supported by the support blocks 64. Then, the sealing plate 5 can be clamped at the end of the stern tube. The two support blocks 64 can adapt to the support of stern tubes with different diameters, and the bidirectional lead screw 61 can be rotated. When the bidirectional lead screw 61 rotates, the two support blocks 64 on it can move towards or away from each other, so as to reduce or increase the distance between the two support blocks 64. When the two support blocks 64 move towards each other, the support blocks 64 will move towards the bottom side of the stern tube, so as to move the stern tube upward and increase the height of the stern tube. When the two support blocks 64 move away from each other, the support blocks 64 will move towards the side of the stern tube, so as to move the stern tube downward and reduce the height of the stern tube. In this way, the height of the stern tube can be adjusted according to the diameter of the stern tube, so that the axis of the stern tube is aligned with the axis of the sealing plate 5 as much as possible, and the stern tube is located within the range of the sealing ring 52, so that the sealing ring 52 can seal the stern tube smoothly, which is convenient for testing stern tubes with different diameters. In addition, the positioning screw II 9 can be screwed out from the internal thread hole II 66, and then the position of 6 can be adjusted according to the length of the stern tube, so as to adapt to the support of stern tubes with different lengths.

[0031] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ship stern tube water pressure leakage test workbench, characterized in that: The invention comprises a base (1), wherein both sides of the top of the base (1) are provided with a positioning plate (2) and a sealing plate (5), the two sealing plates (5) are located between the two positioning plates (2), and the bottom surface of one positioning plate (2) is fixedly connected to one side of the top surface of the base (1), the opposite surfaces of the two positioning plates (2) are fixedly connected to a plurality of jacks (21), the side surface of the sealing plate (5) is transmission-connected to the output ends of the adjacent plurality of jacks (21), the opposite surfaces of the two sealing plates (5) are fixedly connected to sealing rings (52), the opposite back surfaces of the two sealing plates (5) are connected to water pipes (51), and the water pipes (51) are provided with valves (53) inside.

2. A ship stern tube water pressure leakage test workbench according to claim 1, characterized in that: A pressure gauge (8) is arranged on the side of a sealing plate (5).

3. A ship stern tube water pressure leakage test workbench according to claim 1, characterized in that: A support frame (3) is fixedly connected to one side of the top surface of the base (1), and a side surface of the support frame (3) is fixedly connected to a side surface of a positioning plate (2). Both sides of the support frame (3) are provided with oblique support rods (31) fixedly connected to a side surface of a positioning plate (2), and the bottom ends of the oblique support rods (31) are fixedly connected to the top surface of the base (1).

4. A ship stern tube water pressure leakage test workbench according to claim 1, characterized in that: A connecting plate (4) is slidably connected to the other side of the top surface of the base (1); the top surface of the connecting plate (4) is fixedly connected to the bottom surface of another positioning plate (2); and the top surface of the connecting plate (4) is fixedly connected to two triangular plates (41) fixedly connected to the side surfaces of another positioning plate (2).

5. A ship stern tube water pressure leakage test workbench according to claim 4, characterized in that: The two long sides of the top surface of the base (1) are provided with a plurality of circular holes (11), and the two sides of the top surface of the connecting plate (4) are provided with two threaded holes (42) corresponding to the circular holes (11), and the inner side surfaces of the threaded holes (42) are screwed with positioning screws (7), and the ends of the positioning screws (7) pass through the interiors of the adjacent circular holes (11).

6. A ship stern tube water pressure leakage test workbench according to claim 5, characterized in that: Both sides of the top surface of the base (1) are slidably connected to a support frame (6); the inner side surface of the support frame (6) is slidably connected to two sliding seats (62); the top surface of the sliding seat (62) is fixedly connected to a support seat (63); the inner side surface of the support seat (63) is rotatably connected to a support block (64); the inner side surface of the support frame (6) is rotatably connected to a bidirectional screw rod (61) that is screwed together with the two sliding seats (62).

7. A ship stern tube water pressure leakage test workbench according to claim 6, characterized in that: The side surfaces at both ends of the support frame (6) are fixedly connected to side plates (65) which are slidably connected to the top surface of the base (1); the side plates (65) are provided with two threaded holes (66) corresponding to the circular holes (11); the inner surfaces of the two threaded holes (66) are screwed together with two positioning screws (9); the ends of the two positioning screws (9) pass through the interiors of the adjacent circular holes (11).

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