Optical fiber hydrophone protection structure and optical fiber hydrophone array

Abstract

The utility model belongs to a light sensing detection system, and discloses an optical fiber hydrophone protection structure and an optical fiber hydrophone array, the optical fiber hydrophone protection structure comprises a protection cover assembly and two buckling rings, the protection cover assembly comprises a first cover body and a second cover body, the first cover body and the second cover body are arranged corresponding to the optical fiber hydrophone along the peripheral side of the optical fiber hydrophone sheath in an enclosing and splicing manner, two ends of the first cover body arranged along the enclosing and splicing direction are provided with first splicing plate parts in an extending manner, and two ends of the second cover body arranged along the enclosing and splicing direction are provided with first splicing openings; the first splicing plate part is embedded in the first splicing opening which is formed by enclosing and splicing on the same side, the two buckling rings are arranged at the two ends of the protective cover assembly respectively, the first end of each buckling ring is buckled on the protective cover assembly, and the second end of each buckling ring is buckled on the optical fiber hydrophone sheath. The purposes of improving the external impact load bearing capacity of the optical fiber hydrophone and preventing the optical fiber hydrophone from being damaged are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of light sensing detection systems, and in particular relates to a fiber optic hydrophone protection structure and a fiber optic hydrophone array. Background Art

[0002] Fiber optic hydrophones and their arrays have become the development direction of the underwater part of passive sonar, and are the most promising equipment for ocean detection and monitoring of weak sound field signals. In the fiber optic hydrophone array structure, the fiber optic hydrophone is the core sensing unit, while the conventional fiber optic hydrophone array only has a skeleton installed inside the fiber optic hydrophone array sheath. When the position of the fiber optic hydrophone is subjected to a large external impact, the performance of the fiber optic hydrophone may be damaged, making the fiber optic hydrophone array unable to work normally. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a fiber optic hydrophone protection structure and a fiber optic hydrophone array, aiming to solve the technical problem that the fiber optic hydrophones of the existing fiber optic hydrophone array are easily damaged due to the weak ability of the fiber optic hydrophones to withstand external impact loads.

[0004] To achieve the above-mentioned purpose, the first aspect of the utility model provides a fiber optic hydrophone protection structure, wherein the fiber optic hydrophone protection structure includes a protective cover assembly and two buckling rings; the protective cover assembly includes a first cover body and a second cover body, the first cover body and the second cover body are assembled and arranged along the circumference of the fiber optic hydrophone sheath corresponding to the fiber optic hydrophone, both ends of the first cover body arranged along the enclosing assembly direction are provided with a first assembly plate portion, both ends of the second cover body arranged along the enclosing assembly direction are formed with a first assembly opening, and the first assembly plate portion is embedded in the first assembly opening of the same side enclosing assembly; the two buckling rings are respectively arranged at the two ends of the protective cover assembly, and the first end of each buckling ring is buckled on the protective cover assembly, and the second end is buckled on the fiber optic hydrophone sheath.

[0005] In one embodiment of the utility model, the number of the first assembly plate parts at at least one end of the first cover body is multiple, and the multiple first assembly plate parts are arranged in sequence along the length direction of the first cover body, and the gap between two adjacent first assembly plate parts is set as the second assembly opening, the number of the first assembly openings at at least one end of the second cover body is multiple, and the multiple first assembly openings are arranged in sequence along the length direction of the second cover body, and the solid part between two adjacent first assembly openings is set as the second assembly plate part, the first assembly plate parts are embedded in the first assembly openings one by one, and the second assembly plate parts are embedded in the second assembly openings one by one, so that the first assembly plate parts and the adjacent second assembly plate parts are mutually engaged and assembled.

[0006] In one embodiment of the present invention, the first assembling plate portion and the second assembling plate portion are both configured as a trapezoid with the lower bottom facing outward.

[0007] In an embodiment of the present invention, sound-permeable holes are provided on the first cover body and / or the second cover body.

[0008] In one embodiment of the utility model, the number of sound-transmitting holes on the first cover body and / or the second cover body is multiple, and the multiple sound-transmitting holes are arranged in at least two rows along the circumference of the corresponding cover body, and the inner wall of the first cover body and / or the second cover body is provided with an anti-impact pad between two adjacent rows of sound-transmitting holes.

[0009] In an embodiment of the present invention, the inner walls of the first cover body and / or the second cover body are provided with mounting grooves along the length direction, and the mounting grooves can be used to accommodate the anti-impact pads.

[0010] In an embodiment of the present invention, the anti-impact pad is protruded from the mounting groove.

[0011] In an embodiment of the present invention, the thickness of the first cover body and / or the second cover body is set to 3 mm, and the depth of the installation groove is set to 1.2-1.5 mm.

[0012] In an embodiment of the present invention, the depth of the mounting groove is set to 0.4-0.5 times the thickness of the first cover body or the second cover body.

[0013] In one embodiment of the utility model, the buckling ring is configured as an integrally shrunken extruded metal part and includes a first buckling portion and a second buckling portion. The first buckling portion is enclosed and buckled on the end of the protective cover assembly, and the second buckling portion is enclosed and buckled on the optical fiber hydrophone sheath through a shrinking extrusion process.

[0014] To achieve the above objective, the second aspect of the present invention provides a fiber optic hydrophone array, wherein the fiber optic hydrophone array comprises the fiber optic hydrophone protection structure described above.

[0015] Through the above technical solution, the optical fiber hydrophone protection structure provided by the embodiment of the utility model has the following beneficial effects:

[0016] When the above-mentioned fiber optic hydrophone protection structure is used, since it includes a protective cover assembly and two buckling rings, the first cover body and the second cover body of the protective cover assembly are assembled and arranged corresponding to the fiber optic hydrophone along the circumference of the fiber optic hydrophone sheath to protect the fiber optic hydrophone. At the same time, since the protective cover assembly adopts a design of enclosing and assembling the first cover body and the second cover body, the protective cover assembly can be disassembled and assembled on the longer fiber optic hydrophone sheath, and the first assembling plate extending from the first cover body can be embedded in the first assembling opening formed on the second cover body, thereby ensuring the stability of the first cover body and the second cover body being assembled and enclosed on the outside of the fiber optic hydrophone sheath. At the same time, buckling rings are provided at both ends of the protective cover assembly to prevent the protective cover assembly from axial movement, so that the ability of the fiber optic hydrophone to withstand external impact loads and avoid damage to the fiber optic hydrophone can be improved by adding the protective cover assembly and the two buckling rings.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a fiber optic hydrophone protection structure cover arranged outside the fiber optic hydrophone sheath according to an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 3 It is a structural schematic diagram of a first cover body according to one embodiment of the utility model from one viewing angle;

[0022] Figure 4 It is a structural schematic diagram of the first cover body from another viewing angle according to an embodiment of the utility model.

[0023] Description of Reference Numerals

[0024] 100, protective cover assembly; 110, first cover body; 111, first assembly plate; 112, second assembly port; 120, second cover body; 121, second assembly plate; 130, sound-permeable hole; 140, mounting groove; 150, anti-impact pad; 200, buckling ring; 210, first buckling part; 220, second buckling part; 300, fiber optic hydrophone; 400, fiber optic hydrophone sheath; 500, supporting frame. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] The fiber optic hydrophone protection structure and the fiber optic hydrophone array of the present invention are described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the utility model provides a fiber optic hydrophone protection structure, wherein the fiber optic hydrophone protection structure comprises:

[0028] The protective cover assembly 100 includes a first cover body 110 and a second cover body 120. The first cover body 110 and the second cover body 120 are assembled and arranged to correspond to the optical fiber hydrophone 300 along the circumference of the optical fiber hydrophone sheath 400. Both ends of the first cover body 110 arranged along the enclosing and assembling direction are provided with first assembling plates 111. Both ends of the second cover body 120 arranged along the enclosing and assembling direction are formed with first assembling openings. The first assembling plates 111 are embedded in the first assembling openings of the same side enclosing and assembling.

[0029] Two buckling rings 200 are disposed at two ends of the protective cover assembly 100 , and a first end of each buckling ring 200 is buckled on the protective cover assembly 100 , and a second end of each buckling ring 200 is buckled on the optical fiber hydrophone sheath 400 .

[0030] When the above-mentioned optical fiber hydrophone protection structure is used, since it includes the protective cover assembly 100 and the two buckling rings 200, the first cover body 110 and the second cover body 120 of the protective cover assembly 100 are arranged to be enclosed and assembled along the circumference of the optical fiber hydrophone sheath 400 corresponding to the optical fiber hydrophone 300, so as to protect the optical fiber hydrophone 300. At the same time, since the protective cover assembly 100 adopts the design of enclosing and assembling the first cover body 110 and the second cover body 120, the protective cover assembly 100 can be disassembled and assembled on the longer optical fiber hydrophone sheath 400, and the first cover body 110 is The extended first assembly plate portion 111 can be embedded in the first assembly opening formed on the second cover body 120, thereby ensuring the stability of the first cover body 110 and the second cover body 120 when being assembled and enclosed on the outside of the fiber optic hydrophone sheath 400. At the same time, both ends of the protective cover assembly 100 are provided with retaining rings 200 to prevent the protective cover assembly 100 from axial movement. By adding the protective cover assembly 100 and the two retaining rings 200, the purpose of improving the ability of the fiber optic hydrophone 300 to withstand external impact loads and avoiding damage to the fiber optic hydrophone 300 can be achieved.

[0031] Specifically, see Figure 1 and Figure 2 The fiber optic hydrophone 300 is placed in the fiber optic hydrophone sheath 400, and a supporting frame 500 is also provided in the fiber optic hydrophone sheath 400 to support the fiber optic hydrophone sheath 400. The fiber optic hydrophone sheath 400 can be set as a sound-transmitting sheath. The protective cover assembly 100 is set on the outside of the fiber optic hydrophone sheath 400 corresponding to the fiber optic hydrophone 300 to enhance the ability of the fiber optic hydrophone 300 to withstand external impact loads.

[0032] See also Figures 1 to 3In one embodiment of the utility model, the number of the first assembly plate portions 111 at at least one end of the first cover body 110 is multiple. Preferably, the number of the first assembly plate portions 111 at both ends of the first cover body 110 arranged along the enclosed assembly direction is multiple. The multiple first assembly plate portions 111 are sequentially spaced at the corresponding ends along the length direction of the first cover body 110. The gap between two adjacent first assembly plate portions 111 is set as the second assembly opening 112, that is, the first assembly plate portions 111 and the second assembly opening 112 are alternately arranged in sequence. The number of the first assembly openings at at least one end of the second cover body 120 is multiple. Preferably The number of first assembling openings at both ends of the second cover body 120 arranged along the enclosed assembly direction is multiple, and the multiple first assembling openings are arranged in sequence at intervals along the length direction of the second cover body 120 at the corresponding ends, and the entity part between two adjacent first assembling openings is set as the second assembling plate part 121, that is, the first assembling openings and the second assembling plate part 121 are arranged alternately in sequence, and the first assembling plate part 111 is embedded in the first assembling opening one by one, and the second assembling plate part 121 is embedded in the second assembling opening 112 one by one, so that the first assembling plate part 111 and the adjacent second assembling plate part 121 are mutually engaged and assembled. Therefore, on the same side where the first cover body 110 and the second cover body 120 are enclosed and assembled, the multiple first assembly plate portions 111 of the first cover body 110 can be embedded in the multiple first assembly openings of the second cover body 120 in a one-to-one correspondence, and the multiple second assembly plate portions 121 of the second cover body 120 can be embedded in the multiple second assembly openings 112 of the first cover body 110 in a one-to-one correspondence. The multiple first assembly plate portions 111 and the multiple second assembly plates are alternately engaged and assembled in sequence. Through such an arrangement, the stability of the enclosed assembly of the first cover body 110 and the second cover body 120 can be further improved.

[0033] In one embodiment of the utility model, the first assembly plate portion 111 and the second assembly plate portion 121 are both set to a trapezoid with the bottom facing outward, and the first assembly port and the second assembly port 112 are set to be consistent with the shape of the corresponding assembly plate portion, so that the corresponding assembly plate portion can be embedded. The first assembly plate portion 111 and the second assembly plate portion 121 are both set to a trapezoid with the bottom facing outward, on the one hand, they can be mutually engaged and assembled through the waist edges inclined in the trapezoid, and on the other hand, it is convenient for production and manufacturing. Specifically, the first assembly plate portion 111 and the second assembly plate portion 121 can be set to an isosceles trapezoid with the bottom facing outward, so that the two waist edges of each assembly plate portion can be engaged and assembled. Of course, the utility model is not limited to this. The first assembly plate portion 111 can be set to have two waist edges that are convex and protruding, and the second assembly plate portion 121 can be set to have two waist edges that are concave, and the engagement and assembly of the first assembly plate portion 111 and the second assembly plate portion 121 can also be achieved.

[0034] In one embodiment of the present invention, the first cover 110 and / or the second cover 120 are provided with sound-transmitting holes 130. The addition of the sound-transmitting holes 130 can facilitate the detection of the optical fiber hydrophone 300. Specifically, the number, position and aperture size of the sound-transmitting holes 130 on the first cover 110 and the second cover 120 can be set according to actual needs.

[0035] In one embodiment of the utility model, the number of sound-transmitting holes 130 on the first cover body 110 and / or the second cover body 120 is multiple, and the multiple sound-transmitting holes 130 are arranged in at least two rows along the circumference of the corresponding cover body, and the inner wall of the first cover body 110 and / or the second cover body 120 is provided with an anti-impact pad 150 between two adjacent rows of sound-transmitting holes 130. By adding the anti-impact pad 150, the impact of the external impact load on the fiber optic hydrophone 300 can be further reduced. Specifically, the first cover body 110 and the second cover body 120 of the protective cover assembly 100 are both metal parts, preferably stainless steel parts or titanium alloy parts, and the anti-impact pad 150 can be a rubber part, which has better buffering performance than metal parts.

[0036] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the inner wall of the first cover body 110 and / or the second cover body 120 is provided with a mounting groove 140 along the length direction, and the mounting groove 140 can be used to accommodate the anti-impact pad 150. That is, the anti-impact pad 150 can be arranged along the entire length direction of the first cover body 110 and the second cover body 120 to comprehensively improve the buffering performance of the protective cover assembly 100. In addition, the addition of the mounting groove 140 facilitates the fixing of the anti-impact pad 150 on the corresponding cover body, and the anti-impact pad 150 can be specifically connected to the groove wall of the mounting groove 140 by adhesive connection.

[0037] In an embodiment of the present invention, the anti-impact pad 150 is protruded from the installation groove 140 , so that the anti-impact pad 150 can be compressed when the corresponding cover is installed to enhance the elastic buffering capacity of the anti-impact pad 150 .

[0038] In one embodiment of the present invention, the thickness of the first cover 110 and / or the second cover 120 is set to 3 mm, and the depth of the mounting groove 140 is set to 1.2-1.5 mm. The depth of the mounting groove 140 affects the strength of the corresponding cover on the one hand, and affects the design of the thickness of the anti-impact pad 150 on the other hand. The setting of the above parameters can ensure that the anti-impact pad 150 is within the thickness range required for buffering on the basis of ensuring the strength of the corresponding cover. Specifically, when the thickness of the corresponding cover is set to 3 mm, the depth of the mounting groove 140 is preferably set to 1.3-1.4 mm.

[0039] In one embodiment of the present invention, the depth of the mounting groove 140 is set to 0.4 to 0.5 times the thickness of the first cover 110 or the second cover 120. The above multiples can be set to determine a reasonable depth design range of the mounting groove 140 according to the thickness of the corresponding cover. Of course, this reasonable depth design range is obtained by considering the thickness design of the anti-impact pad 150.

[0040] Please see again Figure 1 and Figure 2 In one embodiment of the utility model, the clamping ring 200 is configured as an integrally shrunken extruded metal part and includes a first clamping portion 210 and a second clamping portion 220. The first clamping portion 210 is enclosed and clamped on the end of the protective cover assembly 100, and the second clamping portion 220 is enclosed and clamped on the optical fiber hydrophone jacket 400 by a shrunken extrusion process. Specifically, since the protective cover assembly 100 is arranged on the outside of the optical fiber hydrophone jacket 400, the outer diameter of the protective cover assembly 100 is larger than the outer diameter of the optical fiber hydrophone jacket 400. In order to realize the respective clamping of the protective cover assembly 100 and the optical fiber hydrophone jacket 400 by the two ends of the clamping ring 200, the second clamping portion 220 corresponding to the optical fiber hydrophone jacket 400 can adopt a shrunken extrusion process to facilitate the installation of the clamping ring 200. In addition, whether the first clamping portion 210 needs to adopt a shrunken extrusion process can be determined according to the blanking size of the clamping ring 200.

[0041] In addition, the utility model also provides a fiber optic hydrophone array, wherein the fiber optic hydrophone array includes the fiber optic hydrophone protection structure described above. Since the fiber optic hydrophone array adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0042] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fiber optic hydrophone protection structure, characterized in that: The optical fiber hydrophone protection structure comprises: A protective cover assembly, comprising a first cover body and a second cover body, wherein the first cover body and the second cover body are assembled and arranged along the circumference of the sheath of the optical fiber hydrophone corresponding to the optical fiber hydrophone, both ends of the first cover body arranged along the enclosing and assembling direction are provided with first assembling plates, and both ends of the second cover body arranged along the enclosing and assembling direction are formed with first assembling openings, and the first assembling plate is embedded in the first assembling opening of the same side enclosing and assembling; Two buckling rings are respectively arranged at two ends of the protective cover assembly, and a first end of each buckling ring is buckled on the protective cover assembly, and a second end is buckled on the optical fiber hydrophone sheath.

2. The optical fiber hydrophone protection structure according to claim 1, characterized in that: The number of the first assembling plate parts at at least one end of the first cover body is multiple, and the multiple first assembling plate parts are arranged in sequence along the length direction of the first cover body, and the gap between two adjacent first assembling plate parts is set as a second assembling opening. The number of the first assembling openings at at least one end of the second cover body is multiple, and the multiple first assembling openings are arranged in sequence along the length direction of the second cover body, and the solid part between two adjacent first assembling openings is set as a second assembling plate part, the first assembling plate parts are embedded in the first assembling openings one by one, and the second assembling plate parts are embedded in the second assembling openings one by one, so that the first assembling plate part and the adjacent second assembling plate part are mutually engaged and assembled.

3. The optical fiber hydrophone protection structure according to claim 2, characterized in that: The first assembling plate portion and the second assembling plate portion are both configured as a trapezoid with the lower bottom facing outward.

4. The optical fiber hydrophone protection structure according to claim 1, characterized in that: The first cover body and / or the second cover body are both provided with sound-permeable holes.

5. The optical fiber hydrophone protection structure according to claim 4, characterized in that: The number of the sound-transmitting holes on the first cover body and / or the second cover body is multiple, and the multiple sound-transmitting holes are arranged in at least two rows along the circumference of the corresponding cover body. The inner wall of the first cover body and / or the second cover body is provided with an anti-impact pad between the sound-transmitting holes in two adjacent rows.

6. The optical fiber hydrophone protection structure according to claim 1, characterized in that: The inner walls of the first cover body and / or the second cover body are both provided with mounting grooves along the length direction, and the mounting grooves can be used to accommodate the anti-impact pads.

7. The optical fiber hydrophone protection structure according to claim 6, characterized in that: The anti-impact pad is arranged to protrude from the mounting groove.

8. The optical fiber hydrophone protection structure according to claim 6, characterized in that: The thickness of the first cover body and / or the second cover body is set to 3 mm, and the depth of the installation groove is set to 1.2-1.5 mm; and / or the depth of the installation groove is set to 0.4-0.5 times the thickness of the first cover body or the second cover body.

9. The optical fiber hydrophone protection structure according to any one of claims 1 to 8, characterized in that: The buckling ring is configured as an integrally shrunken extruded metal part and includes a first buckling portion and a second buckling portion, wherein the first buckling portion is buckled around the end of the protective cover assembly, and the second buckling portion is buckled around the optical fiber hydrophone sheath through a shrinking extrusion process.

10. A fiber optic hydrophone array, characterized in that: The fiber optic hydrophone array comprises the fiber optic hydrophone protection structure according to any one of claims 1 to 9.

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