CN114745879A - Equipment fixing device for marine environment resistance - Google Patents

Equipment fixing device for marine environment resistance Download PDF

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Publication number
CN114745879A
CN114745879A CN202210180970.9A CN202210180970A CN114745879A CN 114745879 A CN114745879 A CN 114745879A CN 202210180970 A CN202210180970 A CN 202210180970A CN 114745879 A CN114745879 A CN 114745879A
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CN
China
Prior art keywords
electronic equipment
ventilation system
ventilation
sealing
marine environment
Prior art date
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Pending
Application number
CN202210180970.9A
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Chinese (zh)
Inventor
王涛
吕云朋
陈建超
胡培根
李雪冬
刘宁
杨成博
陈学永
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China Aviation Optical Electrical Technology Co Ltd
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China Aviation Optical Electrical Technology Co Ltd
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Publication date
Application filed by China Aviation Optical Electrical Technology Co Ltd filed Critical China Aviation Optical Electrical Technology Co Ltd
Priority to CN202210180970.9A priority Critical patent/CN114745879A/en
Publication of CN114745879A publication Critical patent/CN114745879A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention relates to an equipment installation device for resisting marine environment, which comprises a top ventilation system, a top sealing device, an air cooling installation frame and a bottom ventilation system, wherein the top sealing device is arranged between the top ventilation system and electronic equipment; the top sealing device comprises a bracket, a top sealing element and a pressing plate, wherein the bracket is arranged at the bottom end of the top ventilation system, and the pressing plate is connected with the bracket so as to press the top sealing element between the pressing plate and the bracket; the top sealing element is a sealing rubber ring with an annular hollow cavity structure; the air-cooled mounting bracket includes mounting bracket, ventilation adjusting plate and bottom sealing member, and the inward flange of bottom sealing member is equipped with the bellying that the slope upwards extends, and bellying and the ascending cross-section of bottom plate thickness direction enclose into the compression space, and the compression space holds the bellying when the bottom sealing member receives electronic equipment pressure. The invention realizes the stable sealing of the electronic equipment in the up-down direction after the electronic equipment is installed, and is beneficial to the plug-in installation of the electronic equipment.

Description

Equipment fixing device for marine environment resistance
Technical Field
The invention belongs to the technical field of aerospace electrical equipment, and particularly relates to an equipment installation device for marine environment resistance.
Background
With the continuous development demand of naval equipment, the development of domestic carrier-borne aircraft is rapidly developed, airborne electronic equipment is eroded by splashed seawater and marine atmosphere when the aircraft flies at low altitude in the range of a carrier-borne platform, the marine atmosphere contains a large amount of salt, microorganisms and other pollutants, the seawater is a natural electrolyte and contains various salts, the resistance in the seawater is very small, and very serious corrosive effects are easily caused when the seawater is contacted with dissimilar metals. Most of the shipboard aircraft will be parked directly on the flight deck, and the tail gas (containing SO) emitted by the aircraft/aircraft carrier on the flight deck2) Highly corrosive H is formed in humid air2SO4Under the action of a humid environment, acidic atmosphere is formed around the environment and permeates into a machine body and airborne equipment to accelerate the generation of corrosion.
Along with the continuous upgrading and upgrading of weapons and equipment, the functions of various electronic equipment are gradually increased and the electronic equipment is developed towards modularization and integration, the power and heat consumption of the electronic equipment are increased, the traditional natural heat dissipation cooling mode does not meet the heat dissipation requirement, heat dissipation cooling is required to be carried out in a forced ventilation cooling mode, the up-and-down ventilation of the electronic equipment is one of the heat dissipation design modes, in order to avoid that the ventilation system of the electronic equipment is corroded by ocean atmosphere in the ventilation process, the ventilation system of the electronic equipment is often required to be sealed with the outside, an air inlet is used for dehumidifying and desalting environmental control air by installing an air filter, how to realize the sealing design of the ventilation system of the electronic equipment is important to the safe and reliable use of the electronic equipment, and the sealing structure in the existing ventilation system has single function and poor sealing performance and maintainability, it is difficult to satisfy the existing requirements.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an equipment installation device for marine environment resistance, which realizes the effect of up-and-down bidirectional sealing between electronic equipment and a top/bottom ventilation system and effectively reduces the insertion and extraction force during the loading and unloading of the electronic equipment.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The equipment installation device for resisting the marine environment comprises a top ventilation system, a top sealing device, an air cooling installation frame and a bottom ventilation system, wherein the top sealing device is arranged between the top ventilation system and electronic equipment; the top sealing device comprises a bracket, a top sealing element and a pressing plate, the bracket is installed at the bottom end of the top ventilation system, and the pressing plate is connected with the bracket so as to press the top sealing element between the pressing plate and the bracket; the top sealing piece is a sealing rubber ring in an annular hollow cavity structure and is used for elastically contacting the top of the electronic equipment so as to realize the sealing between the top ventilation system and the electronic equipment;
the air-cooled mounting bracket includes the mounting bracket, locate the ventilation regulating plate of mounting bracket bottom and locate the bottom sealing member between ventilation regulating plate and the mounting bracket, the bottom sealing member is the annular, the inward flange of bottom sealing member is equipped with the bellying that the slope upwards extends, the bellying is arranged in the ventilation interface of seting up on the bottom plate of mounting bracket, and the bellying protrusion is in the bottom plate up end, bellying and the ascending cross-section of bottom plate thickness side enclose into the compression space, the compression space is used for holding the bellying completely when the bottom sealing member receives electronic equipment pressure, the bellying is in order to realize the sealed between bottom ventilation system and the electronic equipment with the bottom elastic contact of electronic equipment.
Further, the top sealing element is P-shaped in cross section.
Further, the top seal is coated with a fabric for improving wear resistance between the electronic device and the top seal.
Further, be equipped with on the support and supply the top seal piece to inlay the mounting groove of establishing, the cell wall of mounting groove can with the electronic equipment butt when the top seal piece excessively compresses to avoid the top seal piece excessively to compress.
Furthermore, a plurality of self-locking nuts are installed on the end face, facing the top ventilation system, of the support, and the pressing plate is connected with the support through locking matching of the screws and the corresponding self-locking nuts. The beneficial effects are as follows: after the electronic equipment is disassembled from the air cooling mounting frame, the screw is directly disassembled to realize the unilateral disassembly and maintenance of the top sealing device, and the air cooling mounting frame is very convenient.
Furthermore, a pressure relief hole is formed in the top sealing element and communicated with the hollow cavity structure of the top sealing element, so that the top sealing element can be compressed easily.
Furthermore, the ventilation adjusting plate is installed below the ventilation interface on the bottom plate through a fastening piece, the fastening piece comprises an installation screw and a nut, and the installation screw penetrates through the bottom plate of the installation frame and the ventilation adjusting plate and then is in locking fit with the nut.
Furthermore, a plurality of lightening holes are formed in the support.
Furthermore, the top ventilation system and the bottom ventilation system are arranged in parallel up and down, and at least two electronic equipment installation positions arranged side by side are arranged between the top ventilation system and the bottom ventilation system along the left-right direction.
Further, the fabric is a fiber reinforced layer.
By means of the technical scheme, compared with the prior art, the invention has the beneficial effects that:
1. the invention realizes the up-down bidirectional sealing of the electronic equipment and the top/bottom ventilation system, and the innovative structural design of the sealing element ensures that the sealing element has good compression performance, large elastic deformation and large effective contact area of the sealing surface because the top sealing element and the bottom sealing element are in elastic deformation contact in different forms, thereby being beneficial to improving the sealing performance.
2. The top sealing element in the invention adopts a hollow cavity structure, the elastic deformation range is large, and when the sealing gap changes, the sealing rubber ring has a certain automatic compensation function and can be used for the condition that the sealing gap changes in a small range (when the sealing air pressure is lower).
3. In the invention, both the top sealing device and the bottom sealing element on the air-cooled mounting rack have the advantages of simple structure, convenient assembly and disassembly and good maintainability.
4. The top sealing element can reduce the plugging force when the electronic equipment is installed, the top of the case is matched with the hollow cavity structure of the top sealing element, the arc surface of which is a gradually-changed acute angle, in the insertion process of the case of the electronic equipment, so that the deflection deformation of the top sealing element along the plugging direction can be reduced, and compared with a sealing ring with a square top, the arc-shaped design can reduce the plugging force.
5. The bottom sealing element in the invention not only realizes good contact between the sealing element and the bottom of the case to achieve a sealing effect, but also avoids the increase of the case lifting the electronic equipment and the plugging friction force of the electronic equipment, ensures the opposite plugging and signal exchange of the connector in the equipment, and improves the signal transmission stability.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the installation and matching of the installation device for marine environment resistant equipment and the electronic equipment.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 shows the principle of the bi-directional sealing ring controlled ventilation of the installation device for marine environment resistant equipment of the present invention.
Fig. 4 is a schematic view of the mating of the top seal with the electronic device of the present invention.
Fig. 5 is a schematic view of the construction of the top sealing device of the present invention.
Fig. 6 is an exploded view of the top seal assembly of the present invention.
Fig. 7A is a cross-sectional assembly view of the top seal assembly of the present invention.
Fig. 7B is an enlarged view of a portion I in fig. 7A.
Fig. 8A to 8B are external structural views of the top seal.
Fig. 9A to 9B are schematic top seal cross-sectional views.
FIG. 10 is a schematic view of the top seal in a compressed state.
Fig. 11 is a schematic view showing the mounting of the electronic equipment on the air-cooled mount according to the present invention.
Fig. 12 is a perspective view of an air-cooled mount of the present invention.
Fig. 13 is an exploded view of the air-cooled mount of the present invention.
Fig. 14 is an outline view of the bottom seal member of the present invention.
Fig. 15 is a cross-sectional view of the bottom seal of the present invention.
Fig. 16 is a view showing the fitting relationship of the bottom seal in use.
Fig. 17A to 17B are schematic views of the shape of the bottom seal before and after compression, respectively.
FIG. 18 is a graphical representation of four factors affecting the cross-section of the bottom seal in an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 to 18, an installation device for marine environment resistant equipment includes a top ventilation system 5, a top sealing device 4, an air-cooled installation frame 2 and a bottom ventilation system 1, wherein the top ventilation system includes two parallel load-bearing frames and two air duct plates, the air duct plates are substantially U-shaped plate-shaped structures, a top air duct 51 is enclosed by the load-bearing frames and the air duct plates, and only the lower side of the top air duct 51 is open; similarly, the bottom ventilation system 1 also comprises corresponding bearing frames and air duct plates, and forms a bottom air duct 6 with only the upper side open; an air inlet 52 communicated with the top air channel is arranged at one end of the top ventilation system, and an air outlet 101 communicated with the bottom air channel is arranged at one end of the bottom ventilation system. In order to ensure the environmental control ventilation control quality and the ventilation and heat dissipation requirements of electronic equipment in the marine environment, the plurality of electronic equipment adopt an integrated common air duct, so that the space of the airplane can be fully utilized, and the weight of the airplane can be reduced; the air inlet is used for being connected with an airplane environment control pipeline, the tail end of the airplane environment control pipeline is provided with an air filter, and the air outlet is connected to a fan through the airplane pipeline to exhaust air. In this embodiment, the top ventilation system and the bottom ventilation system are arranged in parallel up and down, and two electronic device 3 mounting positions are provided between the top ventilation system and the bottom ventilation system in parallel in the left-right direction.
The top sealing device 4 is arranged between the bottom end of the top ventilation system and the top of the electronic equipment 3 and used for sealing the top of the electronic equipment case and the top ventilation system. Air-cooled mounting bracket 2 sets up on bottom ventilation system, and electronic equipment 3 is installed on air-cooled mounting bracket 2 with back plug form. With reference to fig. 5 and 6, the top sealing device 4 includes a bracket 8, a top sealing element 9, a pressing plate 10, a self-locking nut 7 and a screw 11, wherein the bracket is mainly used for fixing the top sealing element, the top sealing device is integrally fixed on a bearing frame of a top ventilation system through the bracket, a ventilation hole 81 formed in the middle of the bracket is configured to meet the requirement of a ventilation area of electronic equipment, and a lightening hole 82 can be formed in the bracket to realize a lightweight design. The top sealing element 9 is a sealing rubber ring with a rectangular annular hollow cavity structure, the hollow cavity structure 91 is used for realizing top compression sealing of the electronic equipment, the bracket is provided with an installation groove 83 for the top sealing element to be embedded in, and the hollow structure of the top sealing element protrudes out of the end face of the bracket facing the electronic equipment after installation; the clamp plate mainly used realizes that top sealing member compresses tightly with the support and fixes, and the clamp plate is rectangle annular structure, and the clamp plate passes through screw 11 to be connected with support 8 to compress tightly top sealing member and fix between clamp plate and support, the preferred countersunk screw of screw, self-locking nut adopts auto-lock layer board nut, and auto-lock layer board nut installs on the support, can guarantee assembly back unilateral maintenance, connection and locking, and the clamp plate is fixed through countersunk screw and auto-lock layer board nut.
As shown in fig. 9A to 9B, the top sealing member 9 has a P-type cross section, and is provided with a plurality of mounting holes 92, and is connected to the bracket by a pressing plate, a self-locking nut, and a screw, and the hollow cavity structure 91 of the top sealing member can increase the compressible space and the compression amount; the top sealing member includes that rubber substrate 93 and rubber substrate 93 cover fabric 94 outward, realizes sealed compression through the cavity structures, is the fiber reinforcement layer through fabric 94, guarantees the wearability of top sealing member and electronic equipment installation, improves anti tear performance and reduces its permanent deformation, and the up end of top sealing member is provided with the pressure release hole 95 with the hollow structure intercommunication, guarantees to have the compressibility among the equipment fixing process, realizes the top seal. In addition, the groove wall of the mounting groove 83 can also play a certain supporting and limiting role on the sealing element when the top sealing element is excessively compressed, and damage caused by excessive compression of the top sealing element is avoided. The height of the top sealing element is determined through simulation analysis, the proper height can meet the sealing requirement, the mounting friction force of the electronic equipment can be reduced, the electronic equipment is facilitated to be mounted and dismounted, when the electronic equipment case is inserted into the air-cooled mounting frame, the top sealing element is contacted with the top sealing element and gradually extrudes the top sealing element, the top sealing element is in close contact with the top surface of the case of the electronic equipment, the hollow cavity structure is compressed to achieve a good contact sealing effect, the state of the compressed top sealing element is shown in figure 10, the stable state of the triangular cross section not only increases the sealing contact surface, but also has strong sealing structure strength.
Forced air cooling mounting bracket 2 includes mounting bracket 13, bottom sealing member 14, fastener and ventilation adjusting plate 15, mounting bracket 13 includes bottom plate 131, erect curb plate 132 of locating the bottom plate both sides and erect the mounting panel 133 of locating the bottom plate rear end, the curb plate and the bottom plate of both sides enclose into a guide rail portion that supplies electronic equipment along the fore-and-aft direction slip plug, the electronic equipment installation back that targets in place, locking device 134 and the electronic equipment cooperation through the setting of bottom plate front end, realize electronic equipment's fixed, locking device is prior art, no longer give unnecessary details. The mounting plate is provided with a mounting interface, the mounting interface is used for mounting a connector, and the rear end of the electronic equipment is provided with an adaptive connector which is inserted with the connector after the electronic equipment is mounted in place so as to realize the electrical transmission function. The bottom plate is provided with a ventilation interface 1311, and the arrangement position and the size of the ventilation interface are matched with the bottom ventilation hole of the electronic equipment, so that ventilation and cooling of the electronic equipment are realized.
The ventilation adjusting plate 15 is arranged below a ventilation interface of the bottom plate through the fastening piece, the ventilation adjusting plate is a pore plate, and when the air quantity needs to be adjusted, only a corresponding number of pores on the ventilation adjusting plate need to be plugged through plugging plugs; in this embodiment, the fastening member includes a mounting screw 12 and a nut 16, and the mounting screw passes through the bottom plate of the mounting frame and a corresponding mounting hole on the ventilation adjusting plate and then is in locking fit with the nut to fix the ventilation adjusting plate. The bottom sealing element 14 is arranged between the ventilation adjusting plate and the bottom plate 21, and the bottom sealing element can prevent air leakage at the position between the ventilation adjusting plate and the mounting bracket; the bottom sealing element is a sealing rubber ring made of annular rubber materials, the materials can be molded by HK6140 or other materials, the size of the ring is matched with the area of the ventilation hole at the bottom of the case of the electronic equipment, the sealing rubber ring has a compressible sealing effect, and through reasonable structural design, the sealing rubber ring can realize the sealing of the ventilation hole of the electronic equipment and the equipment installation device and can also realize the plugging and pulling resistance reduction effects of the electronic equipment.
Hole sites matched with the mounting screws are arranged on the bottom sealing element 14 so as to reinforce and mount the sealing element; the inner edge of the bottom sealing member is provided with a projection 141 extending obliquely upwards, and the oblique direction of the projection is outward oblique relative to the ventilation interface; the bulge of the bottom sealing element is positioned in the ventilation interface after the bottom sealing element is installed, the bulge protrudes out of the upper end face of the bottom plate in the height direction, a compression gap 142 is formed by the bulge and the cross section of the bottom plate in the thickness direction, the compression gap is used for completely accommodating the bulge when the sealing element is stressed by electronic equipment, the cross section area of the bulge, which is higher than the bulge of the bottom plate, is S1, the cross section area of the compression gap is S2, S2 is greater than S1, the bulge cannot heighten the electronic equipment in a use state, and the bottom plate still serves as a main bearing surface of the electronic equipment.
Electronic equipment and forced air cooling mounting bracket are to inserting the in-process, compress bottom sealing member top through electronic equipment's chassis bottom, make the bellying by the complete compression to the compression space of reserving, simultaneously under the elasticity restoring force effect of bellying, the bellying will keep good elastic contact force with electronic equipment's chassis bottom to reach the sealed effect of good elastic contact. If the size of the protruding part is large or the reserved compression gap is small, the protruding part cannot completely enter the reserved compression gap after compression, the bottom sealing element can lift the electronic equipment, so that the plugging friction force of the electronic equipment is increased, and the equipment opposite plugging and signal exchange are influenced; if the position of the connector and the position of the adaptive connector in the height direction are staggered, the mutual insertion of the electronic equipment and the connector on the equipment installation device is not facilitated, and even if the mutual insertion is forcibly completed, hidden danger can be brought to the stability of signal transmission.
In this embodiment, in order to realize normal insertion and effective sealing of the electronic device, the following conditions need to be satisfied:
1. the sectional area S2 of the compression gap is greater than the sectional area S1 of the bottom seal protruding from the bottom plate, and the contact analysis is performed on the existing model by using finite element software, so as to evaluate and determine the space filling state of the compressed bottom seal, specifically, refer to the schematic shape diagrams before and after compression of the sealing rubber ring shown in fig. 17A and 17B.
2. The height H of the bottom seal protruding from the base plate of the mounting frame is less than the maximum permissible deviation H of the connector from the corresponding housing of the adapter connector, which is determined by the assembly and machining tolerances of the connector and the adapter connector.
3. As shown in fig. 18, in the case of guaranteeing the conditions 1 and 2, the friction force should be controlled to guarantee the sealing performance and the installation and insertion force, mainly by controlling four main factors affecting the cross section of the bottom sealing member: height h of the protruding mount floor, thickness d of the boss, inclination Z of the boss, and radius R at the intersection of the boss and the bottom seal base. The specific method for selecting the above four factors in this embodiment is as follows:
1) obtaining a frictional force F between an electronic device and a chassisfCalculating the formula: ffN × μ, wherein: n is the positive pressure between the electronic device and the mounting rack, and mu is the friction coefficient;
2) selecting the height h of the bottom plate of the protruding mounting frame by the method of the condition 2;
3) the selection of the fillet R is determined according to the contact positive pressure finite element analysis trend of the contact surface under the condition that the compression height is h, the size of the fillet R obtained by analysis is approximately linearly changed with the positive pressure, namely the size of the fillet and the friction force are also linearly changed, so that the smaller the fillet is, the better the fillet is;
4) the inclination angle Z is determined according to the finite element analysis trend of the contact positive pressure of the contact surface under the condition of the compression height h, the obtained positive pressure becomes smaller along with the increase of the inclination angle, the positive pressure changes to be blocky along with the decrease of the inclination angle of the bulge before a certain inflection angle value, the positive pressure changes slowly along with the decrease of the inclination angle of the bulge after the certain inflection angle value is exceeded, and the inflection angle value is the design value. In this embodiment, the tilt angle Z may be adaptively selected within an acute angle range.
5) The thickness d of the bulge is selected, finite element contact analysis is carried out on bottom sealing elements with different thicknesses, the contact positive pressure finite element analysis trend of a contact surface under the condition of the compression height h is determined, the thickness of the bulge exceeding a certain inflection point value can be obtained, the positive pressure is exponentially increased, namely, the friction force is also exponentially increased, and the inflection point value can be used as a design value.
The specific values of the parameters are determined by analyzing and calculating the sizes of the parts in combination with the parameters, so that the selection of the parameters can be selected within a certain range without departing from the technical scheme of the invention, and the specific values of the parameters are not limited by the invention.
The working principle of the invention is as follows:
referring to fig. 3, the electronic device is inserted forward into the air-cooled mounting rack, the top sealing member contacts with the top of the chassis of the electronic device, and the bottom sealing member contacts with the bottom of the chassis of the electronic device, so that the top/bottom sealing members are in a compressed state to achieve up-down sealing. Cooling air passing through the air filter enters from the air inlet, and after passing through the top air channel, the cooling air downwards passes through the top air hole 31 of the equipment to enter the electronic equipment so as to ventilate and dissipate heat of the electronic equipment; then the cooling air flows through the bottom air vent 32 of the electronic equipment, is collected through a bottom air duct in the bottom air cooling system, and is finally connected to a fan for air exhaust through an air outlet and an airplane pipeline. In order to realize ventilation distribution among different electronic equipment on the same layer, a proper number of plugging plate holes are additionally arranged on a ventilation adjusting plate to realize adjustment; and a flow limiting ring 102 can be additionally arranged at the air outlet to perform ventilation regulation on ventilation systems at the bottoms of the units in different levels.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.

Claims (10)

1. The utility model provides a resistant marine environment uses equipment fixing device which characterized in that: the air-cooled electronic equipment comprises a top ventilation system, a top sealing device, an air-cooled mounting frame and a bottom ventilation system, wherein the top sealing device is arranged between the top ventilation system and the electronic equipment; the top sealing device comprises a support, a top sealing element and a pressing plate, the support is installed at the bottom end of the top ventilation system, and the pressing plate is connected with the support so as to press the top sealing element between the pressing plate and the support; the top sealing piece is a sealing rubber ring in an annular hollow cavity structure and is used for elastically contacting the top of the electronic equipment so as to realize the sealing between the top ventilation system and the electronic equipment;
the air-cooled mounting bracket includes the mounting bracket, locate the ventilation regulating plate of mounting bracket bottom and locate the bottom sealing member between ventilation regulating plate and the mounting bracket, the bottom sealing member is the annular, the inward flange of bottom sealing member is equipped with the bellying that the slope upwards extends, the bellying is arranged in the ventilation interface of seting up on the bottom plate of mounting bracket, and the bellying protrusion is in the bottom plate up end, bellying and the ascending cross-section of bottom plate thickness side enclose into the compression space, the compression space is used for holding the bellying completely when the bottom sealing member receives electronic equipment pressure, the bellying is in order to realize the sealed between bottom ventilation system and the electronic equipment with the bottom elastic contact of electronic equipment.
2. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: the top seal is P-shaped in cross-section.
3. A marine environment resistant equipment mounting arrangement as claimed in claim 2, wherein: the top seal is overwrapped with fabric for improving wear resistance between the electronic device and the top seal.
4. A marine environment resistant equipment mounting arrangement as claimed in any one of claims 1 to 3, wherein: be equipped with on the support and supply the top sealing member to inlay the mounting groove of establishing, the cell wall of mounting groove can be when the top sealing member excessively compresses with the electronic equipment butt to avoid the excessive compression of top sealing member.
5. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: the end face of the bracket facing the top ventilation system is provided with a plurality of self-locking nuts, and the pressing plate is connected with the bracket through the locking matching of the screws and the corresponding self-locking nuts.
6. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: and the top sealing element is provided with a pressure relief hole which is communicated with the hollow cavity structure of the top sealing element.
7. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: the ventilation adjusting plate is installed below the ventilation interface on the bottom plate through a fastening piece, the fastening piece comprises an installation screw and a nut, and the installation screw penetrates through the bottom plate of the installation frame and the ventilation adjusting plate and then is in locking fit with the nut.
8. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: the bracket is provided with a plurality of lightening holes.
9. A marine environment resistant equipment mounting arrangement as claimed in claim 1, wherein: the top ventilation system and the bottom ventilation system are arranged in parallel up and down, and at least two electronic equipment installation positions arranged side by side are arranged between the top ventilation system and the bottom ventilation system along the left-right direction.
10. A marine environment resistant equipment mounting arrangement as claimed in claim 3, wherein: the fabric is a fiber reinforced layer.
CN202210180970.9A 2022-02-25 2022-02-25 Equipment fixing device for marine environment resistance Pending CN114745879A (en)

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Application Number Priority Date Filing Date Title
CN202210180970.9A CN114745879A (en) 2022-02-25 2022-02-25 Equipment fixing device for marine environment resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210180970.9A CN114745879A (en) 2022-02-25 2022-02-25 Equipment fixing device for marine environment resistance

Publications (1)

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CN114745879A true CN114745879A (en) 2022-07-12

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Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN114745879A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302128A (en) * 2014-10-15 2015-01-21 中航光电科技股份有限公司 Rear plug type case installation rack
CN106535566A (en) * 2016-11-04 2017-03-22 中航光电科技股份有限公司 Forced air cooling chassis resisting marine atmospheric environment
CN107323649A (en) * 2017-05-18 2017-11-07 上海空间推进研究所 Airborne vehicle cabin door sealing structure
CN109729702A (en) * 2019-01-29 2019-05-07 西安微电子技术研究所 A kind of air-cooled sealed cabinet structure of more heat pipe runners
JP2020183811A (en) * 2019-05-02 2020-11-12 プレス−シール コーポレーション Pipe joint seal for polymer piping

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302128A (en) * 2014-10-15 2015-01-21 中航光电科技股份有限公司 Rear plug type case installation rack
CN106535566A (en) * 2016-11-04 2017-03-22 中航光电科技股份有限公司 Forced air cooling chassis resisting marine atmospheric environment
CN107323649A (en) * 2017-05-18 2017-11-07 上海空间推进研究所 Airborne vehicle cabin door sealing structure
CN109729702A (en) * 2019-01-29 2019-05-07 西安微电子技术研究所 A kind of air-cooled sealed cabinet structure of more heat pipe runners
JP2020183811A (en) * 2019-05-02 2020-11-12 プレス−シール コーポレーション Pipe joint seal for polymer piping

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