CN114069507A

CN114069507A - Communication maintenance system and maintenance method for aircraft test

Info

Publication number: CN114069507A
Application number: CN202111654977.1A
Authority: CN
Inventors: 曹琦; 陆国杰; 吴敬涛; 吴学敏; 李红贤
Original assignee: AVIC Aircraft Strength Research Institute
Current assignee: AVIC Aircraft Strength Research Institute
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-02-18
Anticipated expiration: 2041-12-31
Also published as: CN114069507B

Abstract

The invention relates to the technical field of airplane testing, in particular to a communication maintenance system and a maintenance method for airplane testing, wherein the system comprises a maintenance kit and a sealing and heat-insulating assembly for carrying out sealing and heat-insulating treatment on the maintenance kit; the system provided by the invention is reasonable in structural design, the heat insulation performance and the sealing performance of the cable penetrating position are effectively guaranteed by utilizing the matching use of the maintenance kit and the sealing heat insulation component, the phenomena of condensation, icing and the like caused by cable penetration are further avoided, and the safety of the test is guaranteed.

Description

Communication maintenance system and maintenance method for aircraft test

Technical Field

The invention relates to the technical field of airplane testing, in particular to a communication maintenance system and a communication maintenance method for airplane testing.

Background

Since the invention of airplanes, airplanes have increasingly become indispensable vehicles for modern civilization. With the progress of science and technology, the aviation technology and the continuous development, the performance of the airplane is also continuously improved. The airplane test engineering plays a crucial 'role' in the development of aeronautical technology.

The airplane test project comprises test items such as a takeoff interruption test, a tailing test, a stall test, an extreme weather test, a fatigue test, a splash test, a bird strike test, a lightning stroke test and the like. And when extreme weather tests are carried out, the tests need to be carried out by means of a climate environment laboratory.

The climate environment laboratory has the capability of developing typical climate tests such as high temperature, low temperature, damp and hot, rain, snow fall, ice accumulation/freezing rain and the like, can simulate the ambient temperature of-55-70 ℃, and provides powerful support for the shaping of weapon equipment in China through the climate environment test in the laboratory. Be provided with the power consumption port in the laboratory, be used for satisfying special ring mould, the system is adopted to the number, the power consumption demand of facilities such as test piece, the laboratory adopts the heat preservation wallboard module of standard to connect all around, realize the laboratory heat preservation function, when passing the heat preservation wallboard with the electric cable, the through wires hole is sealed not good, can lead to the kneck condensation, phenomenon such as freezing or new trend flow increase takes place, produce the influence to laboratory and experiment, the serious meeting of result leads to circuit short circuit to damage test piece etc. causes great occurence of failure.

Disclosure of Invention

Aiming at the existing problems, the invention provides a communication maintenance system and a maintenance method for aircraft testing.

The technical scheme of the invention is as follows: a communication maintenance system for aircraft testing comprises a maintenance kit and a sealing and heat-insulating assembly for carrying out sealing and heat-insulating treatment on the maintenance kit; the maintenance kit comprises a sleeve assembly capable of penetrating through the environmental cabin wall plate, an outer end plate assembly capable of being mounted on the outer wall of the environmental cabin wall plate and capable of being connected with one end of the sleeve assembly, and an inner end plate assembly capable of being mounted on the inner wall of the environmental cabin wall plate and capable of being connected with the other end of the sleeve assembly; the sleeve assembly comprises a sleeve body, a telescopic sleeve net movably arranged in the sleeve body and a protective sleeve for protecting a cable;

the sleeve body comprises a pipe body and mounting rings arranged at the ports of the two ends of the pipe body; a plurality of through holes are uniformly formed in the mounting ring;

the telescopic sleeve net comprises a net sleeve body positioned inside the pipe body and a plurality of pull wires used for shrinking the net sleeve body; one ends of the pull wires are uniformly arranged at the left end and the right end of the mesh sleeve body, and the other ends of the pull wires can penetrate through the through holes one by one;

the protective sleeve penetrates through the pipe body and is placed in the net sleeve body, and the protective sleeve can be tightly attached to the outer side wall of the cable through contraction of the net sleeve body;

the outer end plate assembly comprises an outer end plate body which can be movably connected with one end of the pipe body and an aperture regulator which is movably arranged on the outer end plate body and used for penetrating through a cable;

the inner end plate assembly comprises an inner end plate body and a plug device, wherein the inner end plate body can be movably connected with the other end of the pipe body, and the plug device is movably arranged on the inner end plate body and used for penetrating through a cable;

the sealing heat-insulating assembly comprises a first sealing heat-insulating piece, a filling piece and a second sealing heat-insulating piece, wherein the first sealing heat-insulating piece can be arranged between the outer wall of the pipe body and the environmental cabin wall plate, the filling piece is arranged between the outer wall of the protective sleeve and the inner wall of the pipe body, and the second sealing heat-insulating piece is arranged on the inner side of the inner end plate assembly.

Further, placing grooves corresponding to pipe body ports are formed in the contact surfaces of the outer end plate body, the inner end plate body and the pipe body; when assembling the pipe body and the outer end plate body and the inner end plate body, the assembled structure can have better strength and sealing performance after the viscose is smeared in the pipe body and the placing groove.

Further, the sections of the outer end plate body and the inner end plate body are circular or regular polygon; in actual use, the matching can be carried out according to the actual environment.

Further, the protective sleeve sequentially comprises an inner protective layer, a woven layer and a waterproof layer from inside to outside; the cable can be better protected by the filling piece after being wrapped by the protective sleeve; wherein, interior sheath, weaving layer, waterproof layer not only can play the guard action to the cable, and the weaving layer can also strengthen protective sheath toughness, and the waterproof layer can also be isolated with cable and filling member effectively.

Further, the aperture adjuster adopts a first aperture adjuster; the first aperture regulator comprises a first base pipe and 3-8 threading pads, wherein the first base pipe can be movably arranged on the outer end plate body, and the 3-8 threading pads are uniformly arranged inside the first base pipe; the threading pad specifically adopts the rubber pad of seting up rice word notch.

Further, the aperture adjuster adopts a second aperture adjuster; the second aperture regulator comprises a second base pipe which can be movably arranged on the outer end plate body, two mounting pads which are arranged inside the second base pipe, an extrusion ring which is arranged between the two mounting pads, two extrusion blocks which are respectively arranged at the upper end and the lower end of the extrusion ring, and two regulating bolts which respectively penetrate through the upper surface and the lower surface of the second base pipe and are respectively movably connected with the two extrusion blocks; can utilize the extrusion ring to carry out comparatively inseparable parcel to the cable in different apertures when using.

Further, the plug sealing device comprises a plug sealing body and a wire pipe sleeved on the plug sealing body and used for placing a cable; the diameter of the conduit is determined by the diameter of the cable, the diameter of the conduit is slightly larger than the diameter of the cable, and the gap between the inner end plate body and the cable can be effectively filled by the sealing body.

Further, the first sealing heat-insulating piece sequentially comprises a first airtight coating, a first heat-insulating layer, a second airtight coating, a second heat-insulating layer and a third airtight coating from inside to outside; the first heat-insulating layer is connected to the outer wall of the pipe body through the first airtight coating, the second heat-insulating layer is connected to the first heat-insulating layer through the second airtight coating, and the third airtight coating is used for connecting the second heat-insulating layer with the environmental cabin wall plate; the sleeve assembly and the environmental cabin wall plate are filled in a two-layer heat-insulation three-layer coating mode, so that the heat insulation performance of the sleeve body can be effectively ensured, and the sealing performance between the sleeve body and the environmental cabin wall plate is effectively ensured.

Further, the filling piece comprises a filling layer which is filled in the pipe body and is positioned between the cable and the inner wall of the pipe body, and sealing glue layers which are filled at the port of the pipe body and are positioned on two sides of the filling layer; the seam between the tube body and the cable can be further sealed by the sealant layer.

The invention also provides a maintenance method of the communication maintenance system for the aircraft test, which comprises the following steps:

s1, punching holes on the environmental cabin wall plate;

s2, mounting a first sealing and heat-preserving component on the sleeve assembly, and then plugging the first sealing and heat-preserving component into the hole punched in the step S1;

s3, sequentially passing the cable through the inner end plate assembly, the sleeve assembly and the outer end plate assembly;

s4, filling the filling piece between the protective sleeve and the pipe body after the protective sleeve is tightly attached to the inner wall of the cable;

s5, respectively installing the outer end plate assembly and the inner end plate assembly on the environmental cabin wall plate;

and S6, wrapping the second sealing heat preservation piece at the position of the stopper.

Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable design, the filling component is arranged between the cable and the sleeve component, the first heat preservation component is arranged between the sleeve component and the environmental cabin wall plate, and the second heat preservation component is arranged on the inner end plate component, thereby effectively ensuring the heat preservation and the sealing performance of the cable penetrating position, further avoiding the phenomena of condensation, icing and the like caused by the cable penetrating through the cabin, and ensuring the safety of the test; the system has the advantages of high strength, impact resistance, difficult deformation and long service life.

Drawings

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is an exploded view of the structure of example 1 of the present invention;

FIG. 3 is a structural sectional view of embodiment 1 of the present invention;

FIG. 4 is a structural cross-sectional view of a ferrule assembly of the present invention;

FIG. 5 is a schematic view of the structure of an aperture adjuster according to embodiment 1 of the present invention;

fig. 6 is an exploded view of the structure of an aperture adjuster according to embodiment 3 of the present invention;

FIG. 7 is a cross-sectional view of the construction of the stopper of the present invention;

FIG. 8 is a diagram of the process of assembly of the stopper of the present invention;

FIG. 9 is a sectional view of the structure of example 4

FIG. 10 is a structural sectional view of a packing member according to example 5;

FIG. 11 is an exploded view of the structure of example 6;

wherein, 1-sleeve component, 11-sleeve body, 111-pipe body, 1110-placing groove, 112-ring, 12-telescopic cover net, 121-net sleeve body, 122-stay wire, 13-protective sleeve, 131-inner protection layer, 132-braiding layer, 133-waterproof layer, 2-outer end plate component, 21-outer end plate body, 22-aperture regulator, 221-first aperture regulator, 2211-first base pipe, 2212-threading pad, 222-second aperture regulator, 2221-second base pipe, 2222-mounting pad, 2223-extrusion ring, 2224-extrusion block, 2225-adjusting bolt, 3-inner end plate component, 31-inner end plate body, 32-plug, 321-plug body, 322-line pipe, 4-first sealing thermal insulation component, 41-a first airtight coating, 42-a first heat-preservation layer, 43-a second airtight coating, 44-a second heat-preservation layer, 45-a third airtight coating, 5-a filling piece, 51-a filling layer, 52-a sealant layer and 6-a second airtight heat-preservation piece.

Detailed Description

Example 1

The communication maintenance system for the aircraft test shown in fig. 2 and 3 comprises a maintenance kit and a sealing and heat-preserving assembly for performing sealing and heat-preserving treatment on the maintenance kit; the maintenance kit comprises a sleeve assembly 1 capable of penetrating through the environmental cabin wall plate, an outer end plate assembly 2 capable of being mounted on the outer wall of the environmental cabin wall plate and capable of being connected with one end of the sleeve assembly 1, and an inner end plate assembly 3 capable of being mounted on the inner wall of the environmental cabin wall plate and capable of being connected with the other end of the sleeve assembly 1; the sleeve assembly 1 comprises a sleeve body 11, a telescopic sleeve 12 movably arranged in the sleeve body 11 and a protective sleeve 13 for protecting cables;

as shown in fig. 2, the sleeve body 11 includes a tube body 111 and rings 112 disposed at both end ports of the tube body 111; a plurality of through holes are uniformly arranged on the mounting ring 112;

the telescopic sleeve 12 comprises a sleeve body 121 positioned inside the tube body 111 and a plurality of pull wires 122 for contracting the sleeve body 121; one ends of the pull wires 122 are uniformly arranged at the left end and the right end of the mesh sleeve body 121, and the other ends can penetrate through the through holes one by one;

the protective sleeve 13 penetrates through the pipe body 111 and is placed in the net sleeve body 121, and the protective sleeve 13 can be tightly attached to the outer side wall of the cable through contraction of the net sleeve body 121;

as shown in fig. 4, the protective sheath 13 sequentially includes an inner sheath 131, a woven layer 132, and a waterproof layer 133 from inside to outside; the inner protective layer 131 is specifically made of a PVC material, the woven layer 132 is specifically made of an aluminum magnesium woven shielding material, and the waterproof layer 133 is specifically made of waterproof paper;

as shown in fig. 2, the outer end plate assembly 2 includes an outer end plate body 21 movably connected to one end of the pipe body 111, and an aperture adjuster 22 movably provided on the outer end plate body 21 for passing a cable therethrough; wherein, the aperture adjuster 22 is in threaded connection with the outer end plate body 21;

as shown in fig. 5, the aperture adjuster 22 employs a first aperture adjuster 221; the first aperture adjuster 221 includes a first base pipe 2211 movably disposed on the outer end plate body 21 and 7 threading pads 2212 uniformly disposed inside the first base pipe 2211;

as shown in fig. 2, the inner end plate assembly 3 includes an inner end plate body 31 movably connected to the other end of the tube 111, and a plug 32 movably disposed on the inner end plate body 31 for passing a cable therethrough;

as shown in fig. 7, the plug 32 includes a plug body 321 and a conduit 322 disposed on the plug body 321 for placing a cable;

as shown in fig. 2, the seal and insulation assembly includes a first seal and insulation 4 capable of being disposed between the outer wall of the pipe body 111 and the environmental chamber wall panel, a filler 5 disposed between the outer wall of the protective sheath 13 and the inner wall of the pipe body 111, and a second seal and insulation 6 disposed inside the inner end plate assembly 3.

Wherein, the cross sections of the outer end plate body 21 and the inner end plate body 31 are circular.

As shown in fig. 1, the maintenance method of the communication maintenance system of this embodiment specifically includes the following steps:

s1, punching holes on the environmental cabin wall plate; wherein the aperture of the punched hole is 100mm larger than the diameter of the tube body 111;

s2, winding the first sealing and heat-preserving component 4 with the thickness of 55mm on the sleeve assembly 1, and then plugging the first sealing and heat-preserving component into the hole punched in the step S1; wherein, the first sealing heat-insulating part 4 adopts commercially available heat-insulating cotton;

s3, sequentially passing the cable through the inner end plate assembly 3, the sleeve assembly 1 and the outer end plate assembly 2;

when the cable passes through the inner termination plate assembly 3: as shown in fig. 7, a conduit 322 with a diameter slightly larger than that of the cable is selected, a plug body 321 made of rubber cotton is embedded, sleeved and assembled to form a plug 32, and then the cable sequentially passes through the conduit 322 and the inner end plate body 31;

when the cable passes through the sleeve assembly 1, the cable needs to be ensured to pass through the protective sleeve 13;

when the cable passes through the outer end plate assembly 2: the cable sequentially passes through the outer end plate body 21 and the aperture adjuster 22;

s4, the mesh sleeve body 121 is pulled and contracted to the state that the protective sleeve 13 is tightly attached to the inner wall of the cable through the pull wire 122, and then the filling piece 5 is filled between the protective sleeve 13 and the tube body 111; wherein the filling member 5 is specifically a polyurethane foaming agent;

s5, gluing the outer end plate body 21 and the pipe body 111 together, and connecting the outer end plate body 21 and the environmental cabin wall plate through self-tapping screws; then, the aperture adjuster 22 is connected to the outer end plate body 21;

the inner end plate body 31 and the pipe body 111 are adhered together by glue, and the inner end plate body 31 and the environmental cabin wall plate are connected by self-tapping screws; then the stopper 32 is sleeved on the inner end plate body 31;

s6, wrapping the second sealing and heat-preserving part 6 at the position of the stopper 32; wherein, the second sealing heat-preservation member 6 adopts heat-preservation cotton sold in the market.

Example 2

The difference from example 1 is: the cross sections of the outer end plate body 21 and the inner end plate body 31 are square.

Example 3

The difference from example 1 is: as shown in fig. 6, the aperture adjuster 22 employs a second aperture adjuster 222; the second bore diameter adjuster 222 includes a second base pipe 2221 movably disposed on the outer end plate body 21, two mounting pads 2222 disposed inside the second base pipe 2221, a pressing ring 2223 disposed between the two mounting pads 2222, two pressing blocks 2224 disposed at the upper and lower ends of the pressing ring 2223, respectively, and two adjusting bolts 2225 respectively passing through the upper and lower surfaces of the second base pipe 2221 and movably connected to the two pressing blocks 2224.

When the cable is threaded through the environmental bulkhead plate, the communication maintenance system provided by the embodiment is used for: adjusting bolt 2225 to a relaxed state before the cable is threaded through aperture adjuster 22, and then the cable is threaded through; the aperture adjuster 22 is screwed on the outer end plate body 21 to adjust 2225 to a fastened state.

Example 4

The difference from example 3 is: as shown in fig. 9, the first sealing and insulating member 4 includes, in order from inside to outside, a first airtight coating 41, a first insulating layer 42, a second airtight coating 43, a second insulating layer 44, and a third airtight coating 45; the first heat-insulating layer 42 is connected to the outer wall of the pipe body 111 through the first airtight coating 41, the second heat-insulating layer 44 is connected to the first heat-insulating layer 42 through the second airtight coating 43, and the third airtight coating 45 is used for connecting the second heat-insulating layer 44 with the environmental cabin wall plate; the first airtight coating 41, the second airtight coating 43 and the third airtight coating 45 are all silicone sealant with the model number HY1213, the first heat-insulating layer 42 is made of glass wool, and the second heat-insulating layer 44 is made of hydrophobic glass wool cloth;

s1, punching holes on the environmental cabin wall plate; wherein the aperture of the punched hole is 200mm larger than the diameter of the tube body 111;

s2, arranging the first sealing and heat-insulating piece 4 on the pipe body 111 according to the front and back sequence of the first airtight coating 41, the first heat-insulating layer 42, the second airtight coating 43, the second heat-insulating layer 44 and the third airtight coating 45, and specifically: after the first airtight coating 41 is coated, the first heat-insulating layer 42 is wound on the pipe body 111 until the thickness reaches 80mm, then the second airtight coating 43 is coated, the second heat-insulating layer 44 is wound until the thickness reaches 20mm, and then the third airtight coating 45 is coated and then the hole punched in the step S1 is plugged;

when the cable passes through the inner termination plate assembly 3: as shown in fig. 8, a conduit 322 with a diameter slightly larger than that of the cable is selected, a plug body 321 made of rubber cotton is inserted, sleeved and assembled to form a plug 32, and then the cable sequentially passes through the conduit 322 and the inner end plate body 31;

s4, the mesh sleeve body 121 is pulled and contracted to the state that the protective sleeve 13 is tightly attached to the inner wall of the cable through the pull wire 122, and then the filling piece 5 is filled between the protective sleeve 13 and the tube body 111;

s6, wrapping the second sealing and heat-preserving part 6 at the position of the stopper 32; wherein, the second sealing and heat-preserving piece 6 adopts glass silk floss.

Example 5

The difference from example 4 is: as shown in fig. 10, the filling member 5 includes a filling layer 51 filled in the tube 111 and located between the cable and the inner wall of the tube 111, and sealant layers 52 filled at the ports of the tube 111 and located at both sides of the filling layer 51.

The maintenance method of the communication maintenance system of the embodiment specifically includes the following steps:

s4, the mesh sleeve body 121 is pulled and contracted to the state that the protective sleeve 13 is tightly attached to the inner wall of the cable through the pull wire 122, the filling layer 51 is filled between the protective sleeve 13 and the tube body 111, and then the sealant layer 52 is filled at the port of the tube body 111; wherein, the material of the filling layer 51 specifically adopts fireproof daub, and the material of the sealant layer 52 specifically adopts commercially available sealant;

Example 6

The difference from example 5 is: as shown in fig. 11, the contact surfaces of the outer end plate body 21, the inner end plate body 31 and the pipe body 111 are provided with placing grooves 1110 corresponding to the ports of the pipe body 111.

The communication maintenance system of this embodiment, when passing cables through the environmental bulkhead plate: when the pipe body 111 is assembled with the outer end plate body 21 and the inner end plate body 31, the pipe body 111 and the placement groove 1110 are both coated with adhesive and then assembled.

Claims

1. A communication maintenance system for aircraft testing comprises a maintenance kit and a sealing and heat-insulating assembly for carrying out sealing and heat-insulating treatment on the maintenance kit; the maintenance kit comprises a sleeve assembly (1) capable of penetrating through an environment cabin wall plate, an outer end plate assembly (2) capable of being installed on the outer wall of the environment cabin wall plate and connected with one end of the sleeve assembly (1), and an inner end plate assembly (3) capable of being installed on the inner wall of the environment cabin wall plate and connected with the other end of the sleeve assembly (1); the cable protection sleeve assembly is characterized in that the sleeve assembly (1) comprises a sleeve body (11), a telescopic sleeve net (12) movably arranged in the sleeve body (11) and a protection sleeve (13) used for protecting a cable;

the sleeve body (11) comprises a pipe body (111) and mounting rings (112) arranged at two end ports of the pipe body (111); a plurality of through holes are uniformly arranged on the mounting ring (112);

the telescopic sleeve net (12) comprises a sleeve body (121) positioned inside the pipe body (111) and a plurality of pull wires (122) used for contracting the sleeve body (121); one ends of the pull wires (122) are uniformly arranged at the left end and the right end of the mesh sleeve body (121), and the other ends of the pull wires can penetrate through the through holes one by one;

the protective sleeve (13) penetrates through the pipe body (111) and is placed in the mesh sleeve body (121), and the protective sleeve (13) can be tightly attached to the outer side wall of the cable through contraction of the mesh sleeve body (121);

the outer end plate assembly (2) comprises an outer end plate body (21) movably connected with one end of the pipe body (111) and an aperture regulator (22) movably arranged on the outer end plate body (21) and used for allowing a cable to pass through;

the inner end plate component (3) comprises an inner end plate body (31) movably connected with the other end of the pipe body (111) and a plug device (32) movably arranged on the inner end plate body (31) and used for penetrating through a cable;

the sealing and heat-insulating assembly comprises a first sealing and heat-insulating piece (4) which can be arranged between the outer wall of the pipe body (111) and the environmental chamber wall plate, a filling piece (5) which is arranged between the outer wall of the protective sleeve (13) and the inner wall of the pipe body (111) and a second sealing and heat-insulating piece (6) which is arranged on the inner side of the inner end plate assembly (3).

2. The communication maintenance system for aircraft testing according to claim 1, wherein the contact surfaces of the outer end plate body (21), the inner end plate body (31) and the pipe body (111) are provided with placing grooves (1110) corresponding to the ports of the pipe body (111).

3. An aircraft test communication maintenance system according to claim 1, characterized in that the cross-section of the outer end plate body (21) and the inner end plate body (31) is circular or regular polygon.

4. The communication maintenance system for aircraft testing according to claim 1, characterized in that said protective sheath (13) comprises, from inside to outside, an inner sheath (131), a woven layer (132), and a waterproof layer (133).

5. The communication maintenance system for aircraft testing of claim 1, wherein the aperture adjuster (22) employs a first aperture adjuster (221); the first aperture regulator (221) comprises a first base pipe (2211) which can be movably arranged on the outer end plate body (21) and 3-8 threading pads (2212) which are uniformly arranged inside the first base pipe (2211).

6. The communication maintenance system for aircraft testing of claim 1, wherein the aperture adjuster (22) employs a second aperture adjuster (222); the second aperture adjuster (222) comprises a second base pipe (2221) which can be movably arranged on the outer end plate body (21), two mounting pads (2222) which are arranged inside the second base pipe (2221), a pressing ring (2223) which is arranged between the two mounting pads (2222), two pressing blocks (2224) which are respectively arranged at the upper end and the lower end of the pressing ring (2223), and two adjusting bolts (2225) which respectively penetrate through the upper surface and the lower surface of the second base pipe (2221) and are respectively and movably connected with the two pressing blocks (2224).

7. The communication maintenance system for aircraft testing according to claim 1, wherein the packer (32) comprises a packer body (321) and a conduit (322) which is sleeved on the packer body (321) and used for placing a cable.

8. The communication maintenance system for aircraft testing according to claim 1, wherein the first sealing and heat-insulating member (4) comprises a first air-tight coating (41), a first heat-insulating layer (42), a second air-tight coating (43), a second heat-insulating layer (44) and a third air-tight coating (45) in sequence from inside to outside; the first heat-insulating layer (42) is connected to the outer wall of the pipe body (111) through the first airtight coating (41), the second heat-insulating layer (44) is connected to the first heat-insulating layer (42) through the second airtight coating (43), and the third airtight coating (45) is used for connecting the second heat-insulating layer (44) with an environmental cabin wall plate.

9. The communication maintenance system for aircraft testing according to claim 1, wherein the filling member (5) comprises a filling layer (51) filled in the pipe body (111) and located between the cable and the inner wall of the pipe body (111), and sealant layers (52) filled at the ports of the pipe body (111) and located at two sides of the filling layer (51).

10. A maintenance method for a communication maintenance system for aircraft testing according to any one of claims 1 to 9, characterized by comprising the steps of:

s1, punching holes on the environmental cabin wall plate;

s2, mounting a first sealing heat-preservation component (4) on the sleeve assembly (1) and then plugging the first sealing heat-preservation component into the hole punched in the step S1;

s3, sequentially passing the cable through the inner end plate assembly (3), the sleeve assembly (1) and the outer end plate assembly (2);

s4, after the protective sleeve (13) is tightly attached to the inner wall of the cable, the filling piece (5) is filled between the protective sleeve (13) and the pipe body (111);

s5, respectively installing the outer end plate assembly (2) and the inner end plate assembly (3) on the environmental cabin wall plate;

s6, wrapping the second sealing and heat-preserving piece (6) at the position of the stopper (32).