CN214412170U

CN214412170U - Multipurpose wall-through fastening sealing connecting piece

Info

Publication number: CN214412170U
Application number: CN202023171852.7U
Authority: CN
Inventors: 赵渊昉; 张锋; 张琦; 王迪; 孙丹丹
Original assignee: Chinese Flight Test Establishment
Current assignee: Chinese Flight Test Establishment
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-15
Anticipated expiration: 2030-12-24

Abstract

The utility model belongs to the technical field of the aviation cable is worn the wall and is fixed, concretely relates to multipurpose is worn wall fastening sealing connecting piece. The connecting piece includes: the device comprises a wall joint 1, an O-shaped sealing ring 2, a locking nut 3, a cable sealing ring 4 and an outer sleeve nut 5; external threads are arranged at two ends of the through-wall joint, and a hexagonal head is arranged at the middle section of the through-wall joint; the locking nut 3 is in threaded connection with one end of the through-wall joint 1; the locking nut 3 tightly presses the wall 6 on the hexagonal head through the O-shaped sealing ring 2; the outer nut 5 is screwed with the other end of the through-wall joint 1; the locking nut 3, the wall-passing joint 1 and the outer sleeve nut 5 are screwed to form a channel for passing through a cable.

Description

Multipurpose wall-through fastening sealing connecting piece

Technical Field

The utility model belongs to the technical field of the aviation cable is worn the wall and is fixed, a multipurpose is worn wall fastening sealing connecting piece is related to.

Background

With the rapid advance of model tasks and the continuous widening of the refitting business of testing machines, new technologies, new materials and new processes are widely applied, but two technical problems still exist in the electrical refitting work of testing machines:

the process of entering the cabinet and the box body by the high-power line cannot meet the requirements of related safety, reliability and standardability.

1) After long-term vibration in the flying process, the surface of the cable is smooth, so that felt and cloth covers which are wrapped on the cable and prevent friction are likely to shift, and the cable is abraded;

2) the cable has no fixed point, is suspended in the air to enter and exit, and vibrates for a long time in flight, so that a wiring point is likely to be loosened, and equipment is broken or short-circuited;

3) the wire passing holes are too large, so that pollutants and redundant materials are easy to enter the cabinet;

4) when the oil leakage occurs to the airplane, the cables, the switch box, the fuse box and the like can be soaked in a large area, so that oil stains permeate into the components through the felts and other wrappings, and the components are in failure;

5) the cable does not have a fastening device, and improper operation can damage the cable, drag welding spots, pins and jacks, and influence the product quality.

At present, the airtight cabin and the non-airtight cabin of the testing machine are connected in a sealing mode in work, and the method is complex in operation, high in cost, serious in industrial pollution, large in harm and long in construction period.

SUMMERY OF THE UTILITY MODEL

Purpose of the utility model

The utility model discloses to the fixed mode of the high-power cord business turn over rack of testing machine, box body, the security that concerns the whole electrical power generating system of aircraft has very big reliability. In addition, a more convenient and efficient construction process is provided for the sealing process of the non-airtight cabin and the airtight cabin of the testing machine.

The power supply system of the testing machine aims at solving the key technology of fixing the high-power line of the testing machine, and greatly improves the safety of the power supply system of the testing machine and the standardization of a cable construction process.

In order to be used for being connected of the airtight cabin and the non-airtight cabin of the single cable of the testing machine, the traditional glue pouring sealing seat is replaced, industrial pollution is reduced, and manufacturing cost is saved. Has the characteristics of simple operation, convenient use, strong universality and the like.

The wall-through fixed connection of a plurality of cables of the non-airtight cabin of the testing machine is achieved.

The technical scheme of the utility model

A multipurpose through-wall fastening sealing connector comprising: the device comprises a wall joint 1, an O-shaped sealing ring 2, a locking nut 3, a cable sealing ring 4 and an outer sleeve nut 5;

external threads are arranged at two ends of the through-wall joint, and a hexagonal head is arranged at the middle section of the through-wall joint; the locking nut 3 is in threaded connection with one end of the through-wall joint 1; the locking nut 3 tightly presses the wall body (6) on the hexagonal head through the O-shaped sealing ring 2; the outer nut 5 is screwed with the other end of the through-wall joint 1; the locking nut 3, the wall-passing joint 1 and the outer sleeve nut 5 are screwed to form a channel for passing through a cable.

A chamfer is arranged at the inner orifice at the other end of the through-wall joint 1; the connecting piece still includes: a cable seal ring 4; the cable sealing ring 4 is installed on the inner hole chamfer of the wall joint 1, and after the outer sleeve nut 5 is locked with the wall joint 1, the cable sealing ring 4 is completely extruded in the cable, the inner hole chamfer of the wall joint 1 and the outer sleeve nut 5.

The outer surface of the through-wall joint 1 and the outer surface of the outer sleeve nut 5 are provided with safety holes; the safety hole is used for connecting the wall-passing joint 1 and the outer sleeve nut 5 through a safety wire to perform anti-loosening treatment.

Locknut 3 adopts the thread locking agent to carry out locking processing, has improved the utility model discloses a reliability and security.

The wall body 6 is a box body, a cabinet or an airplane shell, and the size of the through-wall connector 1 is determined according to the diameter of a cable.

The O-shaped sealing ring 2 is arranged between the locking nut 3 and the wall body 6, has the functions of fitting and sealing, and is matched with a through-wall connector in model size.

The cable sealing ring (4) adopts a 24-degree conical surface design, so that the cable sealing ring is convenient to extrude and used for fixing and sealing a cable, and the cable sealing ring (4) is extruded by screwing the outer sleeve nut (5), so that the cable sealing ring (4) tightly wraps the cable, and the effects of fastening, water resistance, oil resistance and drag resistance are achieved; the size of the cable is determined according to the diameter of the cable and the wall joint (1).

The utility model has the advantages that:

the airplane modification breaks through the key technology of fixing a high-power line for the first time;

the airplane is refitted to realize the wall penetrating mode of insulating and sealing a single cable for the first time, and a glue pouring sealing seat is replaced;

the industrial pollution is reduced, the manufacturing cost is saved, and the device has strong universality and wide practicability;

the safety and the reliability of an airborne power supply system of the airplane are effectively improved, and the construction quality is ensured;

the installation and the disassembly are simple, and the working efficiency is greatly improved.

Drawings

FIG. 1a is a schematic structural section view of the multipurpose wall-through fastening sealing connector of the present invention;

wherein: 1-wall joint, 2-O-shaped sealing ring, 3-locking nut, 4-cable sealing ring and 5-outer nut;

FIG. 1b is a front view of the multipurpose wall-through fastening sealing connector of the present invention;

FIG. 1c is a side view of the multipurpose wall-through fastening sealing connector of the present invention;

FIG. 2 is a schematic cross-sectional view of the multipurpose wall-through fastening sealing connector of the present invention;

wherein: 1-wall joint, 2-O-shaped sealing ring, 3-locking nut, 4-cable sealing ring, 5-outer nut, 6-wall body and 7-cable.

Detailed Description

1. Introduction to the structure

The utility model provides a multipurpose wall-through fastening sealing connecting piece, the component structure is seen in figure 1a, figure 1b and figure 1c in detail, include: the device comprises a wall joint 1, an O-shaped sealing ring 2, a locking nut 3, a cable sealing ring 4 and an outer sleeve nut 5;

wall joint 1: the cable fixing device is used for fixing cables through walls, and the size of the cable fixing device is determined according to the diameter of the cables.

O-shaped seal ring 2: the locking nut is arranged between the locking nut 3 and the wall body, the functions of fitting and sealing are achieved, and the size of the locking nut is matched with that of the through-wall connector 1.

And (3) locking the nut: used for fixing the through-wall joint 1 on the wall body, and the size of the through-wall joint is matched with that of the through-wall joint 1.

Cable seal 4, outer nut 5: through screwing up outer cover nut 5, extrusion cable sealing washer 4 for cable sealing washer 4 tightly wraps up the cable, plays the fastening, and is waterproof, grease proofing, prevents the effect that drags, and the size matches with wall joint 1.

Locking mode: the outer nut 5 of the through-wall joint 1 is connected through a fuse to perform anti-loose treatment; locking nut 3 is gone up and is carried out locking processing through using the thread locking compound, has improved the utility model discloses a reliability and security.

Innovation point

The utility model discloses have following design innovation point, make it more reasonable and perfect.

Preferably, the cable is firmly fixed on the machine body and the box body by utilizing the through-wall fastening sealing connecting piece, is not easy to bend and deform, and is prevented from being suspended.

Preferably, the double rubber sealing design is utilized, the wall body is attached, the cable is clamped, and the characteristics of insulation, sealing, oil stain resistance, rainwater resistance, wear resistance, pulling resistance and the like are achieved.

Preferably, the anti-loosening effect is achieved by using a safety hole for drilling safety and a thread locking agent respectively.

Preferably, the utility model discloses can be used to the through-wall fastening of many cables in non-airtight district and use to reach the effect of fastening.

The utility model discloses can regard as the wall seal receptacle of wearing of single cable to use.

The utility model discloses but wide application in the cable of various line footpaths, according to the connecting piece of line footpath size design matching specification. Table 1 shows a table for the dimensions of the through-wall fastening and sealing joint.

TABLE 1

The installation process of the invention is as follows:

firstly, a through-wall joint 1 is sleeved on a box body or a machine cabinet in a penetrating way, an O-shaped sealing ring 2 is placed on an internal thread of the through-wall joint 1, a locking nut 3 is sleeved on a cable in a penetrating way, and the through-wall joint 1 is installed on the box body and screwed tightly by rotating the locking nut 3; then, the cable sealing ring 4 and the outer sleeve nut 5 are sequentially sleeved on the cable, the cable sealing ring 4 is fed into the wall joint 1, and the outer sleeve nut 5 is rotated to tightly press the sealing ring and firmly fasten the cable. And finally, a safety is arranged on the outer sleeve nut 5 and the through-wall joint 1, and a thread locking agent is arranged on the locking nut 3 to play a role in preventing loosening. See figure 2 for details.

2. Verification of air-tight experiment

Through airtight test demonstration verification, the utility model discloses wear wall fastening sealing connecting piece can satisfy the airtight requirement of following several types of aircraft airtight cabin.

2.1, verifying the air tightness test of fighter plane

1) Connecting an air supply guide pipe on the test bed with the sealed tank, opening an air supply switch on the test bed, slowly inflating air into the sealed tank, keeping the pressure in the tank to be 35kPa according to a pressure gauge on the test bed, then closing the air supply switch, keeping for 17s, recording the pressure in the tank at the moment according to a precision pressure gauge, and if the pressure in the tank is not lower than 30kPa, determining that the airtight test of the airtight tank is qualified. Otherwise is unqualified

2) And (3) judging obvious air leakage: when the pressure of the airtight cabin is 35kPa, air leakage can be felt by a palm within a range of 30-50 mm from the wall-penetrating fastening sealing connecting piece; or applying a neutral soapy water to the area of the leak, if the soapy water breaks before bubbles are formed, the leak is defined as significant.

Verified through airtight experiment, the utility model discloses wear wall fastening sealing connecting piece satisfies this type of machine airtight test requirement, can be applied to the sealed use in cross-cabin of the single cable of this type.

2.2 conveyor airtightness test verification

Connecting an air supply guide pipe on a test bed with a sealing tank, opening an air supply switch on the test bed, slowly inflating air into the sealing tank, keeping the pressure in the cabin at 30kPa according to a pressure gauge on the test bed, then closing the air supply switch, keeping the pressure for 80s, recording the cabin pressure at the moment according to a precision pressure gauge, and if the cabin pressure is not less than 10kPa, determining that the airtight test of the airtight cabin is qualified. Otherwise is unqualified

Through airtight experimental verification of instrument the utility model discloses wear wall fastening sealing connecting piece and possess airtight condition, can be applied to the seal receptacle of single cable of passenger plane and use.

2.3 passenger plane airtightness test verification

The utility model discloses at the fixed in-process of cable wall feed-through, the operation of being convenient for, it is fixed firm, the specification matches, removes the encapsulating from, and the usage is extensive. The cable connector can be suitable for installation and use of various cables, can meet the use requirements under various environments, and represents a qualitative leap in the development of the technology.

Claims

1. A multipurpose through-wall fastening connector, comprising: the cable sealing device comprises a wall joint (1), an O-shaped sealing ring (2), a locking nut (3), a cable sealing ring (4) and an outer sleeve nut (5);

external threads are arranged at two ends of the through-wall joint, and a hexagonal head is arranged at the middle section of the through-wall joint; the locking nut (3) is in threaded connection with one end of the through-wall joint (1); the locking nut (3) tightly presses the wall body (6) on the hexagonal head through the O-shaped sealing ring (2); the outer sleeve nut (5) is in threaded connection with the other end of the through-wall joint (1); a channel for passing through the cable is formed in the locking nut (3), the wall-passing connector (1) and the outer sleeve nut (5) after the three are screwed.

2. A connection piece according to claim 1, characterized in that the inner aperture of the other end of the through-wall joint (1) is provided with a chamfer; the connecting piece still includes: a cable seal ring (4); the cable sealing ring (4) is installed on the inner hole chamfer of the wall joint (1), and after the outer sleeve nut (5) is locked with the wall joint (1), the cable sealing ring (4) is completely extruded into the cable, the inner hole chamfer of the wall joint (1) and the outer sleeve nut (5).

3. The connecting element according to claim 2, characterized in that the outer surface of the through-wall joint (1) and the outer surface of the outer sleeve nut (5) are provided with safety holes; the safety hole is used for connecting the wall-passing joint (1) and the outer sleeve nut (5) through a fuse to perform anti-loosening treatment.

4. A connection piece according to claim 3, characterized in that the lock nut (3) is treated to be anti-loose with a thread locking compound.

5. The connection according to claim 1, characterized in that the wall (6) is a box, a cabinet or an aircraft casing, and the size of the through-wall connector (1) is determined according to the diameter of the cable.

6. The connecting piece according to claim 1, characterized in that the O-ring (2) is mounted between the locking nut (3) and the wall (6) for fitting and sealing purposes, and the size of the O-ring is matched with that of the through-wall joint.

7. The connecting piece according to claim 2, wherein the cable sealing ring (4) adopts a 24-degree conical surface design, so that the cable sealing ring (4) can be conveniently extruded to fix and seal the cable, and the cable sealing ring (4) is extruded by screwing the outer sleeve nut (5), so that the cable sealing ring (4) tightly wraps the cable, and the effects of fastening, water proofing, oil proofing and drag prevention are achieved; the size of the cable is determined according to the diameter of the cable and the wall joint (1).