Sealing leakage testing device for guide vane cover plate

Abstract

The utility model relates to the technical field of guide vane cover plates, in particular to a guide vane cover plate sealing leakage testing device which comprises an acrylic plate, a sponge pad is fixedly connected to the side face of the acrylic plate, a rubber ring is fixedly connected to the side face of the sponge pad, and a pressure gauge is arranged on the side face, away from the sponge pad, of the acrylic plate. The side face, away from the sponge pad, of the acrylic plate communicates with an air suction pipe, and a valve is arranged in the air suction pipe. The side face of the acrylic plate is communicated with the air suction pipe, the sponge pad can cover the round hole of the guide vane cover plate, negative pressure is formed in the air suction pipe through the first vacuum generator, so that air between the acrylic plate and the guide vane cover plate is extracted, the pressure condition in the sponge pad can be displayed through the pressure gauge, the pressure does not change within a period of time, and the service life of the guide vane cover plate is prolonged. And the sealing performance of the circular hole welding part of the guide vane cover plate is qualified, so that the sealing performance test after the follow-up guide vane field welding can be accurately carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of guide vane cover plates, in particular to a guide vane cover plate sealing leakage testing device. Background Art

[0002] A ship's fairing is a device installed on a ship, which is mainly used to improve the ship's streamline shape, reduce water resistance, and thus improve the ship's navigation efficiency and speed. The guide vane is an important component of the fairing, which can improve the inflow conditions of the propeller. The guide vane is usually a double-layer plate, which is connected by welding. Since the guide vane is always in seawater, it is usually necessary to test the sealing of the welded part after the double-layer plates of the guide vane are welded to each other. In order to test the sealing of the guide vane, a circular hole is sometimes opened on a cover plate of the guide vane, and a one-way valve is set in the circular hole. The inside of the guide vane is ventilated through the one-way valve, so as to test the sealing of the guide vane. However, since the one-way valve is also fixed inside the circular hole by welding, if there is a leak during the on-site test, it may be a leak in the welding part of the circular hole of the guide vane cover plate, which may affect the sealing test of the guide vane after on-site welding. Utility Model Content

[0003] The utility model aims to provide a guide vane cover seal leakage testing device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A guide vane cover seal leakage testing device comprises an acrylic plate, a sponge pad is fixedly connected to the side of the acrylic plate, a rubber ring is fixedly connected to the side of the sponge pad, a pressure gauge is arranged on the side of the acrylic plate away from the sponge pad, and the side of the acrylic plate away from the sponge pad is connected to an intake pipe, a valve is arranged inside the intake pipe, one end of the intake pipe is connected to a vacuum generator 1, and the side of the vacuum generator 1 is connected to a delivery pipe.

[0006] Furthermore, a fixing ring fixedly connected to the side of the sponge pad is fixedly provided on the side of the acrylic plate, a limiting groove is provided on the side of the fixing ring, two connecting tubes are provided at the top and bottom of the side of the fixing ring, a suction cup is provided at one end of the connecting tube, a thread is provided on the side of the connecting tube, a screwing ring screwed with the thread is provided on the side of the connecting tube, a limiting seat slidably connected to the inner side of the limiting groove is provided on the side of the connecting tube, and the side of the screwing ring is in contact with the side of the limiting seat.

[0007] Furthermore, an opening groove is provided on the inner side of the limiting groove.

[0008] Preferably: the other end of the connecting tube is connected to a hose, one end of the hose is connected to a positioning tube, two connecting tubes are provided on one side of the acrylic plate corresponding to the positioning tube, a plurality of fixed tubes are fixedly connected to the inner side of the connecting tube, the side of the positioning tube is in contact with the side of an adjacent fixed tube, the connecting tube is connected to a second vacuum generator, and a screw-on cover screwed on the side of the positioning tube is provided on the side of the fixing tube.

[0009] Furthermore, the inner side surface of the connecting tube is fixedly connected to a plurality of fixed tubes corresponding to the fixed tube, the inner side surface of the fixed tube is slidably connected to a blocking rod, the inner side surface of the fixed tube is provided with a blocking ring corresponding to the blocking rod, and the side surface of the blocking rod is fixedly connected to a spring fixedly connected to the inner side surface of the fixed tube.

[0010] Furthermore, the inner side surface of the positioning tube is fixedly connected with a fixing frame, the side surface of the fixing frame is fixedly connected with an abutment rod, and one end of the abutment rod is in contact with the side surface of an adjacent blocking rod.

[0011] Preferably, a retaining ring is fixedly connected to the inner side surface of the fixing cylinder.

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

[0013] 1. An air intake pipe is connected through the side of the acrylic plate. After the one-way valve is welded inside the circular hole of the guide vane cover, the acrylic plate can be moved to the circular hole welding position of the guide vane cover so that the sponge pad covers the circular hole of the guide vane cover and the rubber ring is tightly attached to the guide vane cover. Then the delivery pipe is connected to the air source, and a negative pressure is formed inside the air intake pipe through a vacuum generator, thereby extracting the air between the acrylic plate and the guide vane cover to form a negative pressure inside the sponge pad. The pressure inside the sponge pad can be displayed by a pressure gauge. If the pressure does not change for a period of time, the sealing of the circular hole welding position of the guide vane cover is qualified. In this way, after the on-site welding of the guide vane cover is completed, when the guide vane is tested for sealing, if leakage occurs, leakage at the circular hole welding position of the guide vane cover can be ruled out, which is conducive to the accurate sealing test of the guide vane after on-site welding.

[0014] 2. A suction cup is provided at one end of the connecting pipe, and negative pressure can be formed inside the connecting pipe through the vacuum generator 2, so that the air inside the suction cup can be extracted through the hose, so that the suction cup is adsorbed on the cover plate. The connecting pipe can limit the position of the limit seat through the screw-on ring, so that the rubber ring is tightly attached to the arc surface of the guide vane cover plate, thereby sealing the inside of the sponge pad, which is convenient for the subsequent extraction of the air inside the sponge pad to test the sealing of the guide vane cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the guide vane cover seal leakage test device of the utility model;

[0016] Figure 2It is a schematic diagram of the acrylic plate structure in the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the air intake pipe in the utility model;

[0018] Figure 4 It is a schematic diagram of the fixing ring structure in the utility model;

[0019] Figure 5 It is a schematic diagram of the connecting pipe structure in the utility model;

[0020] Figure 6 It is a schematic diagram of the internal structure of the connecting pipe in the utility model from a top view.

[0021] In the figure: 1. acrylic plate; 11. pressure gauge; 12. sponge pad; 13. rubber ring; 14. fixing ring; 15. limit groove; 16. opening groove; 2. suction pipe; 21. valve; 3. vacuum generator one; 31. delivery pipe; 4. connecting pipe; 41. suction cup; 42. limit seat; 43. screw-on ring; 44. hose; 5. positioning pipe; 51. screw-on cover; 52. fixing frame; 53. abutment rod; 6. connecting pipe; 61. fixing pipe; 62. fixing cylinder; 63. blocking rod; 64. blocking ring; 65. spring; 66. retaining ring; 7. vacuum generator two. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 In the embodiment of the utility model, the guide vane cover seal leakage testing device includes an acrylic plate 1, a sponge pad 12 is fixedly connected to the side of the acrylic plate 1, a rubber ring 13 is fixedly connected to the side of the sponge pad 12, a pressure gauge 11 is arranged on the side of the acrylic plate 1 away from the sponge pad 12, and the side of the acrylic plate 1 away from the sponge pad 12 is connected to the suction pipe 2, a valve 21 is arranged inside the suction pipe 2, one end of the suction pipe 2 is connected to a vacuum generator 3, and the side of the vacuum generator 3 is connected to a delivery pipe 31.

[0024] Specifically, the acrylic plate 1 can be moved to the circular hole welding position of the guide vane cover plate, so that the sponge pad 12 covers the circular hole of the guide vane cover plate, and the rubber ring 13 is attached to the guide vane cover plate, so as to seal the acrylic plate 1 and the guide vane cover plate, and then the delivery pipe 31 can be connected to the gas source. When the gas flows inside the vacuum generator 3, a negative pressure can be formed inside the suction pipe 2 through the vacuum generator 3, so that the air between the acrylic plate 1 and the guide vane cover plate is extracted through the suction pipe 2, and a negative pressure is formed inside the sponge pad 12. The valve 21 can be closed to seal the acrylic plate 1 and the guide vane cover plate. The internal pressure of the sponge pad 12 can be displayed by the pressure gauge 11. If the pressure does not change for a period of time, the sealing of the circular hole welding part of the guide vane cover plate is qualified. In this way, the cover plate will be welded on site later. When the guide vane is tested for sealing, the interference of leakage at the circular hole welding part of the guide vane cover plate can be eliminated. If leakage occurs, it can be determined that leakage occurs at the welding part of the two plate parts of the guide vane, which is conducive to accurate sealing test of the guide vane after on-site welding.

[0025] Embodiment 1

[0026] like Figure 4-5 As shown, in this embodiment, a fixing ring 14 fixedly connected to the side of the sponge pad 12 is fixedly connected to the side of the acrylic plate 1, a limiting groove 15 is provided on the side of the fixing ring 14, two connecting tubes 4 are provided at the top and bottom of the side of the fixing ring 14, a suction cup 41 is provided at one end of the connecting tube 4, a thread is provided on the side of the connecting tube 4, a screwing ring 43 screwed with the thread is provided on the side of the connecting tube 4, a limiting seat 42 slidably connected to the inner side of the limiting groove 15 is provided on the side of the connecting tube 4, the side of the screwing ring 43 is in contact with the side of the limiting seat 42, and an opening groove 16 is provided on the inner side of the limiting groove 15.

[0027] During specific implementation, the limiting seat 42 can move inside the limiting groove 15, and the suction cup 41 can be adsorbed on the guide vane cover to fix the position of the connecting pipe 4. Since the screw-on ring 43 is screwed on the connecting pipe 4, the connecting pipe 4 can limit the position of the limiting seat 42 through the screw-on ring 43, and the limiting seat 42 can limit the position of the fixing ring 14 through the limiting groove 15, thereby limiting the position of the acrylic plate 1, so that the sponge pad 12 and the rubber ring 13 are tightly attached to the cover, which is convenient for keeping the rubber ring 13 tightly attached to the arc-shaped guide vane cover, so that the inside of the acrylic plate 1 is kept as sealed as possible before vacuuming, which is convenient for the smooth subsequent vacuuming, and the limiting seat 42 can slide inside the limiting groove 15, so that the position of the suction cup 41 can be adjusted according to the curvature of the cover, and when the limiting seat 42 moves to the position of the opening groove 16, the limiting seat 42 can be moved out of the limiting groove 15 through the opening groove 16, thereby reducing or increasing the number of connecting pipes 4 as needed.

[0028] like Figure 4-6As shown, in this embodiment, the other end of the connecting tube 4 is connected to a hose 44, one end of the hose 44 is connected to a positioning tube 5, two connecting tubes 6 are provided on one side of the acrylic plate 1 corresponding to the positioning tube 5, a plurality of fixed tubes 61 are fixedly connected to the inner side of the connecting tube 6, the side of the positioning tube 5 is in contact with the side of the adjacent fixed tube 61, the connecting tube 6 is connected to a vacuum generator 7, and a screw-on cover 51 screwed on the side of the positioning tube 5 is provided.

[0029] In specific implementation, the positioning tube 5 can be connected to the fixed tube 61 through the screw-on cover 51, so that the vacuum generator 2 7 is connected to the air source, and negative pressure can be formed inside the connecting tube 6 through the vacuum generator 2 7. The connecting tube 6 can extract the air inside the hose 44 through the fixed tube 61 and the screw-on cover 51, and the hose 44 can extract the air inside the suction cup 41 through the connecting tube 4, so that the suction cup 41 can be more stably adsorbed on the guide vane cover.

[0030] Embodiment 2

[0031] Based on the first embodiment, Figure 6 As shown, in the present embodiment, the inner side surface of the connecting tube 6 is fixedly connected to a plurality of fixed tubes 62 corresponding to the fixed tube 61, the inner side surface of the fixed tube 62 is slidably connected to a blocking rod 63, the inner side surface of the fixed tube 61 is provided with a blocking ring 64 corresponding to the blocking rod 63, the side surface of the blocking rod 63 is fixedly connected to a spring 65 fixedly connected to the inner side surface of the fixed tube 62, the inner side surface of the positioning tube 5 is fixedly connected to a fixing frame 52, the side surface of the fixing frame 52 is fixedly connected to an abutting rod 53, one end of the abutting rod 53 is in contact with the side surface of the adjacent blocking rod 63, and the inner side surface of the fixed tube 62 is fixedly connected to a retaining ring 66.

[0032] In a specific implementation, when the positioning tube 5 is not connected to the fixed tube 61, under the action of the spring 65, the blocking rod 63 can be inserted into the adjacent fixed tube 61, so that the blocking rod 63 is against the blocking ring 64, so that the inside of the fixed tube 61 is blocked by the blocking rod 63, and both ends of the blocking rod 63 are not in contact with the inside of the fixed tube 62. In this way, when negative pressure is formed inside the connecting tube 6, the blocking rod 63 will not move. After the positioning tube 5 is connected to the fixed tube 61 by screwing the cover 51, the positioning tube 5 can be driven by the fixing frame 52. The abutment rod 53 is inserted into the fixed tube 61 so that the abutment rod 53 abuts against the blocking rod 63, and the blocking rod 63 moves away from the fixed tube 61, thereby disengaging the blocking rod 63 from the adjacent fixed tube 61. At this time, the positioning tube 5 can be connected with the interior of the connecting tube 6 through the fixed tube 61, so that the air inside the positioning tube 5 is sucked through the connecting tube 6, so that the suction cup 41 is adsorbed on the guide vane cover plate. When the number of connecting tubes 4 is adjusted as needed, the corresponding positioning tube 5 can be connected to the connecting tube 6, or the positioning tube 5 can be removed from the connecting tube 6.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Guide vane cover seal leakage test device, characterized in that: The invention comprises an acrylic plate (1), a sponge pad (12) is fixedly connected to the side of the acrylic plate (1), a rubber ring (13) is fixedly connected to the side of the sponge pad (12), a pressure gauge (11) is arranged on the side of the acrylic plate (1) away from the sponge pad (12), and an air suction pipe (2) is connected to the side of the acrylic plate (1) away from the sponge pad (12), a valve (21) is arranged inside the air suction pipe (2), one end of the air suction pipe (2) is connected to a vacuum generator (3), and a conveying pipe (31) is connected to the side of the vacuum generator (3).

2. The guide vane cover seal leakage testing device according to claim 1, characterized in that: A fixing ring (14) fixedly connected to the side of the sponge pad (12) is fixedly connected to the side of the acrylic plate (1), a limiting groove (15) is provided on the side of the fixing ring (14), two connecting tubes (4) are arranged at the top and bottom of the side of the fixing ring (14), a suction cup (41) is arranged at one end of the connecting tube (4), a thread is arranged on the side of the connecting tube (4), a screwing ring (43) screwed with the thread is arranged on the side of the connecting tube (4), a limiting seat (42) slidably connected to the inner side of the limiting groove (15) is arranged on the side of the connecting tube (4), and the side of the screwing ring (43) contacts the side of the limiting seat (42).

3. The guide vane cover seal leakage testing device according to claim 2, characterized in that: An opening groove (16) is formed on the inner side surface of the limiting groove (15).

4. The guide vane cover seal leakage testing device according to claim 2, characterized in that: The other end of the connecting tube (4) is connected to a hose (44), one end of the hose (44) is connected to a positioning tube (5), two connecting tubes (6) are provided on one side of the acrylic plate (1) corresponding to the positioning tube (5), a plurality of fixed tubes (61) are fixedly connected to the inner side of the connecting tube (6), the side of the positioning tube (5) is in contact with the side of an adjacent fixed tube (61), the connecting tube (6) is connected to a second vacuum generator (7), and a screw-on cover (51) screwed on the side of the positioning tube (5) is provided on the side of the positioning tube (5).

5. The guide vane cover seal leakage testing device according to claim 4, characterized in that: The inner side surface of the connecting tube (6) is fixedly connected to a plurality of fixed tubes (62) corresponding to the fixed tube (61); the inner side surface of the fixed tube (62) is slidably connected to a blocking rod (63); the inner side surface of the fixed tube (61) is provided with a blocking ring (64) corresponding to the blocking rod (63); and the side surface of the blocking rod (63) is fixedly connected to a spring (65) fixedly connected to the inner side surface of the fixed tube (62).

6. The guide vane cover seal leakage testing device according to claim 5, characterized in that: The inner side surface of the positioning tube (5) is fixedly connected to a fixing frame (52), and the side surface of the fixing frame (52) is fixedly connected to an abutment rod (53), and one end of the abutment rod (53) contacts the side surface of an adjacent blocking rod (63).

7. The guide vane cover seal leakage testing device according to claim 5, characterized in that: A retaining ring (66) is fixedly connected to the inner side surface of the fixed cylinder (62).

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