An underwater test seal tool

Abstract

The utility model belongs to the field of underwater acoustic performance test of acoustic device relates to a kind of underwater test sealing tool, it is applicable to the pool test of acoustic device product, underwater test sealing tool mainly includes sealing cover plate, the rear end circular opening of acoustic device product is sealed into sealing cover plate through flange plate, sealing cover plate still is equipped with the cable connector for connecting adapter cable, electrical connection of underwater test sealing tool and acoustic device product can be realized through cable connector and adapter cable, to meet the sealing property and electrical connectivity of acoustic device product when underwater acoustic performance test, improve the pool test efficiency of acoustic device.

Description

Technical Field

[0001] This utility model belongs to the field of underwater acoustic performance testing of acoustic devices, and specifically relates to an underwater testing sealing fixture. Background Technology

[0002] The acoustic device consists of components such as a piezoelectric transducer, and its acoustic performance must be tested underwater after assembly. The front end of the acoustic device is typically sealed with vulcanized rubber, while the rear end has a circular opening. During underwater testing, the circular opening at the rear end must be sealed using a sealing device to ensure the device's airtightness and pressure resistance. Furthermore, a test adapter cable must be designed into the sealing device. One end of the adapter cable connects to the acoustic device via an electrical interface, while the other end connects to a watertight test cable to transmit signals during testing. If the sealing performance of the device is unreliable during testing and experimentation, water ingress and damage may occur, making the sealing performance of the device extremely important. Utility Model Content

[0003] The purpose of this utility model is to provide an underwater testing sealing fixture to overcome the above-mentioned technical defects.

[0004] To solve the above-mentioned technical problems, this utility model provides an underwater testing sealing fixture, applicable to acoustic device products, wherein the acoustic device product has a rear circular opening, including: A sealing cover plate is used to seal and cover the rear circular opening of the acoustic device product; A cable connector is provided with a mounting hole in the sealing cover plate, and the cable connector is sealed and assembled in the mounting hole. The adapter cable has a first end and a second end, the first end being connected to the cable connector and the second end being connected to a socket or plug.

[0005] According to an underwater testing sealing fixture, the sealing cover plate includes: A circular substrate, wherein the circular edge of the circular substrate extends vertically to form an annular plate, and the cavity formed by the annular plate and the circular substrate is used to place the acoustic device product. The mounting holes for assembling the cable connector are formed in the circular substrate.

[0006] According to an underwater testing sealing fixture, the annular outer wall of the annular plate is spaced from the outer edge of the circular substrate to allow a user to grasp the sealing cover with both hands or one hand.

[0007] According to an underwater testing sealing fixture, a sealing ring mounting groove suitable for inserting a sealing ring is provided on the annular outer wall of the annular plate.

[0008] According to an underwater testing sealing fixture, the sealing ring mounting groove is coated with lithium-based grease to maintain a flexible connection between the sealing cover and the acoustic device product.

[0009] According to an underwater testing sealing fixture, a wedge ring mounting groove suitable for inserting a wedge ring is provided on the annular outer wall of the annular plate.

[0010] According to an underwater testing sealing fixture, a positioning pin hole is provided on the annular outer wall of the annular plate, and a positioning pin for positioning the sealing cover plate and the acoustic device product is installed in the positioning pin hole.

[0011] According to an underwater testing sealing fixture, along the axial centerline, the positioning pin hole, the wedge ring mounting groove, and the sealing ring mounting groove are distributed sequentially from top to bottom on the annular outer wall of the annular plate; The positioning pin hole is located near the circular substrate.

[0012] According to an underwater testing sealing fixture, eight screw holes are uniformly opened along the circumferential direction on the outer edge of the circular substrate.

[0013] According to an underwater testing sealing fixture, two cable connectors are assembled on the body of the sealing cover plate; With the center of the sealing cover as a reference, the two cable connectors are distributed in different quadrants of the sealing cover; The two cable connectors are respectively connected to the socket and the plug via the adapter cable.

[0014] The underwater testing sealing fixture proposed in this utility model is suitable for water tank testing of acoustic devices. It mainly includes a sealing cover plate. The circular opening at the rear end of the acoustic device is sealed into the sealing cover plate through a flange. The sealing cover plate is also equipped with a cable connector for connecting an adapter cable. Through the cable connector and the adapter cable, the underwater testing sealing fixture and the acoustic device can be electrically connected, thereby satisfying the sealing and electrical connection requirements of the acoustic device during underwater acoustic performance testing and improving the efficiency of water tank testing of the acoustic device.

[0015] To make the above-mentioned contents of this utility model more obvious and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the underwater testing sealing fixture.

[0017] Figure 2 This is a structural diagram of the sealing cover.

[0018] Figure 3 This is a cross-sectional view of the sealing cover.

[0019] Explanation of reference numerals in the attached figures: 10. Sealing cover plate; 11. Circular base plate; 12. Annular plate; 121. Sealing ring mounting groove; 122. Wedge ring mounting groove; 123. Locating pin hole; 13. Screw hole; 20. Cable connectors; 30. Adapter cable; 40. Socket; 50. Plug. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] It should be noted that, in this utility model, the upper, lower, left, and right in the figure are regarded as the upper, lower, left, and right of the underwater test sealing fixture described in this specification.

[0022] Exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the present invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments shown in the drawings is not intended to limit the present invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0023] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0024] This embodiment relates to an underwater testing sealing fixture, applicable to acoustic device products. The acoustic device product has a circular opening at the rear end. Please refer to [link / reference needed]. Figure 1 The underwater testing sealing fixture includes a sealing cover plate 10, a cable connector 20, and an adapter cable 30.

[0025] The sealing cover 10 is used to seal the circular opening at the rear end of the acoustic device product.

[0026] Specifically, the acoustic device product has a flange at the rear circular opening, and after the sealing cover plate 10 is installed, the sealing cover plate 10 is sealed to the flange.

[0027] The sealing cover plate 10 has a mounting hole, and the cable connector 20 is sealed and assembled in the mounting hole. The adapter cable 30 has a first end and a second end, the first end being connected to the cable connector 20 and the second end being connected to the socket 40 or the plug 50.

[0028] In some embodiments, please combine Figure 2 and Figure 3 The sealing cover 10 includes a circular substrate 11, the circular edge of which extends vertically to form an annular plate 12, and the cavity formed by the annular plate 12 and the circular substrate 11 is used to insert an acoustic device product.

[0029] To ensure a sealed connection between the sealing cover 10 and the acoustic device product, a sealing ring mounting groove 121 suitable for inserting a sealing ring is provided on the annular outer wall of the annular plate 12. That is, a sealing ring is fitted onto the annular outer wall of the annular plate 12. When installing the sealing ring, lithium-based grease needs to be applied to the sealing ring mounting groove 121 to maintain a flexible connection between the sealing cover 10 and the acoustic device product.

[0030] In another embodiment, to further ensure a sealed connection between the sealing cover 10 and the acoustic device product, a wedge ring mounting groove 122 suitable for inserting wedge rings is provided on the annular outer wall of the annular plate 12. Inserting two sets of wedge rings into the wedge ring mounting groove 122 can secure the sealing cover 10 and the acoustic device product together.

[0031] The sealing ring mounting groove 121 and the wedge ring mounting groove 122 realize the structural connection between the sealing cover plate 10 and the acoustic device product.

[0032] like Figure 3 As shown, mounting holes for assembling cable connector 20 are formed on circular substrate 11.

[0033] In some embodiments, a positioning pin hole 123 is provided on the annular outer wall of the annular plate 12, and a positioning pin for positioning the sealing cover plate 10 and the acoustic device product is installed in the positioning pin hole 123. The small end face of the sealing cover plate 10 (i.e. the end face where the annular plate 12 is located) is inserted into the acoustic device housing. During the insertion process, the positioning pin hole 123 on the housing and the sealing cover plate 10 are aligned to complete the positioning of the two.

[0034] Please see Figure 3 Along the axial centerline, the positioning pin hole 123, the wedge ring mounting groove 122 and the sealing ring mounting groove 121 are distributed from top to bottom on the annular outer wall of the annular plate 12, wherein the positioning pin hole 123 is close to the circular base plate 11.

[0035] like Figure 3As shown, the annular outer wall of the annular plate 12 and the outer edge of the circular substrate 11 are spaced apart to allow the user to grasp the sealing cover plate 10 with both hands or one hand.

[0036] Eight screw holes 13 are evenly provided along the circumferential direction of the outer edge of the circular substrate 11. The screws installed in the screw holes 13 can connect the sealing cover 10 to the water tank test flange, and at the same time realize the testing of the acoustic device product in eight directions: 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315°.

[0037] In some embodiments, two cable connectors 20 are mounted on the plate body of the sealing cover 10. With the center of the sealing cover 10 as a reference, the two cable connectors 20 are distributed in different quadrants of the sealing cover 10, such as the second quadrant and the third quadrant. The two cable connectors 20 are connected to the socket 40 and the plug 50 respectively through two adapter cables 30.

[0038] The reason for distributing the two cable connectors 20 in different quadrants of the sealing cover plate 10, such as the second quadrant and the third quadrant, is to prevent interference between the newly added cable connectors 20 and the adapter cable 30. Therefore, the installation position of the cable connectors 20 is not limited to this and can be adjusted according to actual needs.

[0039] like Figure 1 As shown, the adapter cable 30 is divided into two groups. The corresponding plug 50 is a 66-pin plug and the socket 40 is a 66-pin socket. The wiring definition and soldering reference number are the same in the two groups of adapter cables 30, which can simultaneously meet the transmission of 66 test electrical signals.

[0040] Before testing the acoustic device, firstly, according to the wiring definition, the red and black wires are soldered to the 66-pin plug (i.e., plug 50) and the 66-pin socket (i.e., socket 40) respectively, forming 66 sets of signal transmission cables. During soldering, the positive and negative wires need to be twisted together to reduce noise interference during signal transmission. The first ends of the two sets of adapter cables 30 are soldered to the two cable connectors 20 respectively. Next, the two cable connectors 20 are connected to the circular base plate 11 of the sealing cover plate 10 using M6X16 screws and spring washers, completing the connection between the adapter cable 30 and the sealing cover plate 10.

[0041] Specifically, all solder joints are treated with conformal coating and protected with heat-shrink tubing to effectively ensure the insulation between the core wires. After the adapter cable 30 is assembled, it is bound with cotton sewing thread and then fitted with nylon tubing for protection. After all assembly and welding are completed, the adapter cable 30 must undergo connectivity and insulation tests. The connectivity of the core wires should meet the technical requirement of no more than 0.5Ω, and the insulation between the core wires should meet the technical requirement of no less than 500MΩ / 250VDC. Only after the connectivity and insulation requirements are met can the acoustic device be connected to the sealing cover 10 for water tank testing.

[0042] During the water tank testing of the acoustic device, two 66-pin connectors (socket 40 and plug 50) are connected to the electrical interface of the acoustic device. An O-ring is installed on the outer wall of the annular plate 12 of the sealing cover 10. Lithium-based grease is applied during installation to ensure a flexible connection between the sealing cover 10 and the acoustic device housing. The small end face of the sealing cover 10 (i.e., the end face where the annular plate 12 is located) is inserted into the acoustic device housing. During insertion, the positioning pin holes 123 on the housing and the sealing cover 10 are aligned to complete their positioning. Two sets of wedge rings are inserted into the wedge ring mounting groove 122 through the wedge ring opening window on the acoustic device housing, securing the acoustic device housing and the sealing cover 10 together. This completes the structural and electrical connection between the acoustic device and the sealing cover 10, allowing for water tank testing of the acoustic device. Up to 66 signal channels can be tested simultaneously.

[0043] In some embodiments, the sealing cover 10 is made of 2A12-H112 high-strength hard aluminum material, which can ensure the strength of the sealing cover 10.

[0044] In some embodiments, the overall structure of the underwater testing sealing fixture is treated with hard anodizing to enhance the surface hardness, wear resistance, and corrosion resistance of the metal.

[0045] The underwater testing sealing fixture proposed in this embodiment can meet the sealing and electrical connection requirements of acoustic devices during underwater acoustic performance testing, realize underwater acoustic performance testing of acoustic devices, and improve the efficiency of water tank testing of acoustic devices.

[0046] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An underwater testing sealing fixture, suitable for acoustic device products, wherein the acoustic device product has a circular opening at the rear end, characterized in that, include: A sealing cover (10) is used to seal and cover the rear circular opening of the acoustic device product; The cable connector (20) has a mounting hole in the body of the sealing cover plate (10), and the cable connector (20) is sealed and assembled in the mounting hole; The adapter cable (30) has a first end and a second end, the first end being connected to the cable connector (20) and the second end being connected to a socket (40) or a plug (50).

2. The underwater testing sealing fixture according to claim 1, characterized in that, The sealing cover (10) includes: A circular substrate (11) has a circular edge that extends vertically to form an annular plate (12). The cavity formed by the annular plate (12) and the circular substrate (11) is used to place the acoustic device product. The mounting hole for assembling the cable connector (20) is formed in the circular substrate (11).

3. The underwater testing sealing fixture according to claim 2, characterized in that, The annular outer wall of the annular plate (12) is spaced from the outer edge of the circular substrate (11) so that the user can grasp the sealing cover plate (10) with both hands or one hand.

4. The underwater testing sealing fixture according to claim 2, characterized in that, A sealing ring mounting groove (121) suitable for inserting a sealing ring is provided on the annular outer wall of the annular plate (12).

5. The underwater testing sealing fixture according to claim 4, characterized in that, The sealing ring mounting groove (121) is coated with lithium-based grease to ensure a flexible connection between the sealing cover plate (10) and the acoustic device product.

6. The underwater testing sealing fixture according to claim 4, characterized in that, A wedge ring mounting groove (122) suitable for inserting a wedge ring is provided on the annular outer wall of the annular plate (12).

7. The underwater testing sealing fixture according to claim 6, characterized in that, A positioning pin hole (123) is provided on the annular outer wall of the annular plate (12), and a positioning pin for positioning the sealing cover plate (10) and the acoustic device product is installed in the positioning pin hole (123).

8. The underwater testing sealing fixture according to claim 7, characterized in that, Along the axial centerline, the positioning pin hole (123), the wedge ring mounting groove (122), and the sealing ring mounting groove (121) are distributed from top to bottom on the annular outer wall of the annular plate (12); The positioning pin hole (123) is located near the circular substrate (11).

9. The underwater testing sealing fixture according to claim 2 or 8, characterized in that, Eight screw holes (13) are evenly provided along the circumferential direction on the outer edge of the circular substrate (11).

10. The underwater testing sealing fixture according to claim 1, characterized in that, Two cable connectors (20) are mounted on the body of the sealing cover (10); With reference to the center of the sealing cover (10), the two cable connectors (20) are distributed in different quadrants of the sealing cover (10); The two cable connectors (20) are connected to the socket (40) and the plug (50) respectively via the adapter cable (30).

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