Underwater electronic module anti-vibration structure

Abstract

The invention discloses an underwater electronic module anti-vibration structure which comprises a base plate and a center column, the center column is arranged on the base plate, a first fixing plate and a second fixing plate are connected to the center column, and an electronic module is arranged between the first fixing plate and the second fixing plate. The first fixing plate is connected with the chassis through a supporting column; and a clamping block is arranged on the central column and is clamped with the electronic module through a hoop so as to fix the electronic module. According to the anti-vibration structure of the underwater electronic module, the center column and the supporting column are arranged on the chassis, the first fixing plate and the second fixing plate are fixedly connected to the center column, the electronic module is fixed, and the bending strength and the torsional strength of the structure are improved by adding the design of the supporting column, flange embedding and the like; by adding the anti-vibration pad, the clamping block and the hoop, resonance between the vibration isolation system and the electrical system is avoided. On the basis of relieving the system coupling vibration effect, the operation stability of the electronic equipment is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of underwater engineering, and in particular relates to an anti-vibration structure of an underwater electronic module. Background Art

[0002] Subsea control modules are primarily used in offshore oil and gas development. As the core component of the subsea Christmas tree control module (SCM), the reliability of the subsea electronic module (SEM) is paramount. The SEM system's primary functions include controlling the opening and closing of the DCV valves within the SCM, monitoring the status of instruments within the SCM and on the Christmas tree, and communicating with the MCS. During extreme conditions such as transportation, hoisting, and surges, the SCM's electronic equipment and electrical system signals may struggle to achieve the desired signal quality, impacting operational stability and quality.

[0003] According to the API 17F standard, the SEM is required to perform frequency sweeps in the X, Y, and Z directions (including four shocks in each direction) and random vibration tests in the maximum direction for two hours. The maximum sweep rate is 1 octave / min, and the sweep frequency should be low enough to allow any resonance to build up amplitude. No resonance with a mechanical amplification factor greater than 10 should be observed when sweeping the frequency from 5 Hz to 150 Hz.

[0004] Therefore, the design of the anti-vibration structure is directly related to the performance of each board and SEM system in the SEM, and is related to passing the environmental stress screening test of the electrical system. The anti-vibration structure design needs to further ensure the reliability of the SEM system and ensure the reliable operation of the SCM.

[0005] Therefore, it is urgent to design an anti-vibration structure for underwater electronic modules to solve the above-mentioned problem of environmental interference affecting the stability and quality of underwater electronic modules. Summary of the Invention

[0006] In order to solve the technical problem mentioned in the background technology that in extreme conditions such as SCM transportation, lifting and surge, the signals of electronic equipment or electrical systems are difficult to achieve the expected effect due to environmental interference, which affects the stability and quality of their use, an underwater electronic module anti-vibration structure is provided to solve the above problem.

[0007] To achieve the above objectives, the specific technical solutions of the anti-vibration structure of the underwater electronic module of the present invention are as follows:

[0008] An underwater electronic module anti-vibration structure includes a chassis and a center column. The center column is arranged on the chassis. A first fixing plate and a second fixing plate are connected to the center column. The electronic module is arranged between the first fixing plate and the second fixing plate. The first fixing plate is connected to the chassis through a support column. A clamping block is provided on the center column. The clamping block is clamped with the electronic module through a clamp to fix the electronic module.

[0009] Furthermore, a first flange is provided at one end of the central column, the first flange abuts against the chassis, and the first flange is screwed to the chassis by bolts.

[0010] Furthermore, a plurality of support columns are provided between the chassis and the first fixing plate, a second flange is provided at one end of the support column, and the second flange is screwed to the chassis by screws.

[0011] Furthermore, one end of the support column away from the second flange is connected to a third flange, and the third flange is screwed to the first fixing plate by screws.

[0012] Furthermore, vibration damping pads are provided between the first flange, the second flange, the third flange, the chassis, and the first fixing plate.

[0013] Furthermore, the first fixing plate and the second fixing plate are symmetrically provided with embedding openings so that two ends of the electronic module abut against the embedding openings.

[0014] Furthermore, the first fixing plate and the second fixing plate are provided with openings, and the first fixing plate and the second fixing plate are sleeved on the central column through the openings.

[0015] Furthermore, locking modules are provided at the openings of the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are fixed to the central column through the locking modules.

[0016] Furthermore, the clamping block is fixedly arranged on the central column, and the clamping block is located between the first fixing plate and the second fixing plate.

[0017] Furthermore, the clamping block is clamped with the middle part of the electronic module, and a clamping hoop is connected to the clamping block. The clamping hoop is sleeved on the electronic module, and the clamping hoop is tightened to fix the electronic module.

[0018] The anti-vibration structure of the underwater electronic module of the present invention has the following advantages:

[0019] By providing a center column and support columns on the chassis, and by securely connecting a first fixing plate and a second fixing plate to the center column, the electronic module is secured. The structural bending and torsional strengths are enhanced by adding support columns and flange embedding. Vibration-damping pads, clamping blocks, and clamps are added to prevent resonance between the vibration isolation system and the electrical system. This application ensures that the vibration isolation buffer system effectively isolates the equipment. By adding flange embedding and vibration-damping pads, the stability of electronic equipment operation is improved while mitigating the system's coupled vibration effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the anti-vibration structure of the underwater electronic module of the present invention.

[0021] Description of the marks in the figure:

[0022] 1. Chassis; 2. Center column; 3. First fixing plate; 4. Second fixing plate; 5. Electronic module; 6. Support column; 7. Clamping block; 8. Clamping hoop; 9. First flange; 10. Second flange; 11. Third flange; 12. Bolts; 13. Screws. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0025] Please refer to the attached Figure 1 The anti-vibration structure of the underwater electronic module of the present invention is described.

[0026] like Figure 1 As shown, the anti-vibration structure of the underwater electronic module in the present invention includes a chassis 1 and a center column 2, the center column 2 is arranged on the chassis 1, and a first fixing plate 3 and a second fixing plate 4 are connected to the center column 2, an electronic module 5 is arranged between the first fixing plate 3 and the second fixing plate 4, and the first fixing plate 3 is connected to the chassis 1 through a support column 6; a clamping block 7 is provided on the center column 2, and the clamping block 7 is clamped with the electronic module 5 through a clamp 8 to fix the electronic module 5.

[0027] By providing a center column 2 and support column 6 on the chassis 1, and by securely connecting a first fixing plate 3 and a second fixing plate 4 to the center column 2, the electronic module 5 is secured. The structural bending and torsional strengths are enhanced by adding support columns 6 and flange embedding. Vibration-damping pads, clamping blocks 7, and clamps 8 are added to prevent resonance between the vibration isolation system and the electrical system. This application ensures that the vibration isolation buffer system provides effective equipment vibration isolation. By adding flange embedding, vibration-damping pads, and other designs, the stability of electronic equipment operation is improved while mitigating the system's coupled vibration effects.

[0028] Further, if Figure 1As shown, a first flange 9 is provided at one end of the center column 2, the first flange 9 abuts against the chassis 1, and the first flange 9 is screwed to the chassis 1 by bolts 12; a plurality of support columns 6 are provided between the chassis 1 and the first fixed plate 3, and a second flange 10 is provided at one end of the support column 6, and the second flange 10 is screwed to the chassis 1 by screws 13; a third flange 11 is connected to the end of the support column 6 away from the second flange 10, and the third flange 11 is screwed to the first fixed plate 3 by screws 13.

[0029] In this embodiment, a first flange 9 is fixedly connected to one end of the center column 2. The first flange 9 and the center column 2 are located in a straight line. The first flange 9 is placed on the chassis 1. Preferably, the center column 2 is located at the center of the chassis 1. Bolts pass through the screw holes on the first flange 9 and the chassis 1 in sequence to fix the first flange 9 to the chassis 1.

[0030] One end of the support column 6 is fixedly connected to a second flange 10, and the second flange 10 is fixedly connected to the chassis 1 by screws 13. The end of the support column 6 away from the chassis 1 is fixedly connected to a third flange 11, and the third flange 11 is fixedly connected to the first fixed plate 3 by screws 13, thereby achieving a stable setting of the first fixed plate 3.

[0031] As a design for bending and torsional strength, support columns 6 and flange embedding are added to improve the structural bending and torsional strength; a comprehensive analysis is carried out on weak links and related load-bearing components that are prone to vibration, and high-strength materials are used for the center column 2 and support column 6 to improve the support strength and rigidity of the anti-vibration structure.

[0032] Further, if Figure 1 As shown, vibration damping pads are provided between the first flange 9, the second flange 10 and the third flange 11 and the chassis 1 and the first fixed plate 3; symmetrical embedding openings are provided on the first fixed plate 3 and the second fixed plate 4 so that the two ends of the electronic module 5 abut against the embedding openings; the first fixed plate 3 and the second fixed plate 4 are provided with openings, and the first fixed plate 3 and the second fixed plate 4 are sleeved on the center column 2 through the openings.

[0033] In this embodiment, preferably, a vibration-damping pad is provided between the first flange 9 and the second flange 10 and the chassis 1, and a vibration-damping pad is also provided between the third flange 11 and the first fixing plate 3; an embedding opening that matches the shape of the electronic module 5 is provided on the first fixing plate 3 and the second fixing plate 4. Preferably, the embedding opening is circular, so that the end of the electronic module 5 is clamped on the embedding opening to achieve end fixation.

[0034] By increasing the specifications and quantity of the bolts 12 and the screws 13 and analyzing and calculating the connection strength, the positions of the bolts 12 and the screws 13 are reasonably distributed, thereby improving the connection strength and reinforcement effect between the equipment and the structure, the structure and the transition piece, and the structure and the test bench; preferably, thread fasteners, anti-loosening washers, etc. are used to prevent the loosening of the connection between the structure and the transition piece, and the structure and the test bench, thereby improving the stability of the entire equipment system.

[0035] In addition, openings matching the shape of the center column 2 are provided on the first fixing plate 3 and the second fixing plate 4. The first fixing plate 3 and the second fixing plate 4 are sleeved on the center column 2 through the openings, so that the center column 2 supports and reinforces the first fixing plate 3 and the second fixing plate 4.

[0036] Further, if Figure 1 As shown, locking modules are provided at the openings of the first fixing plate 3 and the second fixing plate 4, and the first fixing plate 3 and the second fixing plate 4 are fixed to the center column 2 through the locking modules; the clamping block 7 is fixedly provided on the center column 2, and the clamping block 7 is located between the first fixing plate 3 and the second fixing plate 4; the clamping block 7 is clamped with the middle part of the electronic module 5, and a clamping hoop 8 is connected to the clamping block 7, and the clamping hoop 8 is tightened to fix the electronic module 5.

[0037] In this embodiment, preferably, locking modules are provided on the openings of the first fixing plate 3 and the second fixing plate 4. When the positions of the first fixing plate 3 and the second fixing plate 4 are determined, the locking modules are used to lock the first fixing plate 3 and the second fixing plate 4 so that the first fixing plate 3 and the second fixing plate 4 are fixed on the central column 2. While adjusting the distance between the first fixing plate 3 and the second fixing plate 4, the electronic module 5 provided between the first fixing plate 3 and the second fixing plate 4 is fixed.

[0038] The system is designed for anti-resonance, with the addition of vibration-damping pads, clamping blocks 7, and clamps 8 to prevent resonance between the vibration isolation system and the electrical system. Through analysis and calculation, resonance is reduced to a vibration isolation transmission rate η less than 1. Furthermore, the electrical system's structural vibration isolation system is decoupled. To ensure the vibration isolation buffer system effectively isolates the equipment, flange embedding and vibration-damping pads are added. This mitigates the effects of coupled vibrations in the system and improves the stability of the electronic equipment.

[0039] Preferably, the clamping block 7 is fixed to the center column 2 by a locking clip, and the clamping block 7 is located between the first fixing plate 3 and the second fixing plate 4. The clamping block 7 is adjusted so that the clamping block 7 is clamped in the middle of the electronic module 5, and the clamping hoop 8 is sleeved on the outer wall of the electronic module 5. By adjusting the clamping hoop 8 connected to the clamping block 7, the clamping hoop 8 and the clamping block 7 are further fixed to the electronic module 5.

[0040] Preferably, an anti-dropping cap is provided at one end of the central column 2 away from the chassis 1 , and the anti-dropping cap further limits the second fixing plate 4 to ensure that the second fixing plate 4 is fixed.

[0041] As a preferred embodiment, in accordance with the requirements of API 17F, a vibration test was conducted on a prototype of a submersible electronic module (SEM) anti-vibration structure, including swept frequency vibration (three-axis: x-axis, y-axis, and z-axis, sweeping from 5 Hz to 150 Hz and back to 5 Hz), random vibration (random vibration for 2 hours in the direction of maximum swept frequency vibration acceleration), and shock (4 shocks in each of the six directions of the three axes, for a total of 24 times). All vibration test results met the standard requirements and passed the test.

[0042] The construction steps of the anti-vibration structure of the underwater electronic module in this application are as follows:

[0043] First, vertically connect the center column 0 to the chassis 1 through the first flange 9. Insert the first fixing plate 3 and the second fixing plate 4 along the center column 2 in sequence. Connect multiple support columns 6 between the first fixing plate 3 and the chassis 1 to secure the first fixing plate 3.

[0044] Then, place one end of the electronic module 5 into the embedding opening of the first fixing plate 3, adjust the second fixing plate 4 so that the embedding opening of the second fixing plate 4 engages with the end of the electronic module 5, and adjust the locking modules of the first fixing plate 3 and the second fixing plate 4 to restrict the vertical movement of the first fixing plate 3 and the second fixing plate 4;

[0045] Finally, an anti-drop cap is connected to the center column 2 to further limit the vertical movement of the second fixing plate 4, and the clamping block 7 on the center column 2 is adjusted so that the clamping block 7 is engaged with the middle of the electronic module 5, and the clamping hoop 8 is tightened to fix the electronic module 5.

[0046] Based on the anti-vibration structure of the underwater electronic module, a center column 2 and multiple support columns 6 are set on the chassis 1, and a first fixing plate 3 and a second fixing plate 4 are fixedly connected to the center column 2 to fix the electronic module 5. The support columns 6 and flange embedding are added to improve the bending and torsional strength of the structure. Vibration-damping pads, clamping blocks 7 and clamps 8 are added to prevent resonance between the vibration isolation system and the electrical system. This application ensures that the vibration isolation buffer system has a good equipment vibration isolation effect. The addition of flange embedding, vibration-damping pads and other designs improves the stability of the electronic equipment operation while mitigating the system coupling vibration effect.

[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An anti-vibration structure for an underwater electronic module, characterized in that: It includes a chassis and a center column. The center column is arranged on the chassis. A first fixing plate and a second fixing plate are connected to the center column. An electronic module is arranged between the first fixing plate and the second fixing plate. The first fixing plate is connected to the chassis through a support column. A clamping block is arranged on the center column. The clamping block is clamped with the electronic module through a clamp to fix the electronic module.

2. The underwater electronic module anti-vibration structure according to claim 1, characterized in that: A first flange is provided at one end of the central column. The first flange abuts against the chassis and is screwed to the chassis via bolts.

3. The underwater electronic module anti-vibration structure according to claim 2, characterized in that: A plurality of support columns are arranged between the chassis and the first fixing plate. A second flange is arranged at one end of the support column. The second flange is screwed to the chassis by screws.

4. The anti-vibration structure of underwater electronic module according to claim 3, characterized in that: One end of the support column away from the second flange is connected to the third flange, and the third flange is screwed to the first fixing plate by screws.

5. The underwater electronic module anti-vibration structure according to claim 4, characterized in that: Vibration-damping pads are arranged between the first flange, the second flange, the third flange, the chassis and the first fixing plate.

6. The underwater electronic module anti-vibration structure according to claim 1, characterized in that: Embedding openings are symmetrically formed on the first fixing plate and the second fixing plate, so that two ends of the electronic module abut against the embedding openings.

7. The underwater electronic module anti-vibration structure according to claim 6, characterized in that: The first fixing plate and the second fixing plate are provided with openings, and the first fixing plate and the second fixing plate are sleeved on the central column through the openings.

8. The underwater electronic module anti-vibration structure according to claim 7, characterized in that: Locking modules are provided at the openings of the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are fixed on the central column through the locking modules.

9. The underwater electronic module anti-vibration structure according to claim 1, characterized in that: The clamping block is fixedly arranged on the central column, and the clamping block is located between the first fixing plate and the second fixing plate.

10. The underwater electronic module anti-vibration structure according to claim 9, characterized in that: The clamping block is clamped with the middle part of the electronic module. The clamping block is connected with a clamping hoop, which is sleeved on the electronic module. The clamping hoop is tightened to fix the electronic module.

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