A seal for a cable of an engine passing through the cabin

Abstract

The present invention discloses a seal for a through-the-cabin engine cable, which includes a middle sleeve, an extension sleeve, and a half sleeve. The outside of the seal is also equipped with a sheath, a cable tie, and a sealing ring. The seal can be assembled in the factory to unify the assembly standards of the seal, and the seal is directly assembled at a position of appropriate length outside the cable in the factory. After arriving at the construction site, the seal can be directly inserted into the through-cabin hole without the need for secondary sealing assembly, thereby improving on-site construction efficiency. During the potting operation, the potting glue is sequentially left to stand, dried at low temperature, dried at high temperature, and finally cooled with the furnace, thereby ensuring the sealing effect between the seal and the cable. The sheath associated with the seal is different from the original outer sheath design that passes through the through-cabin hole. Instead, the sheath is divided into two sections, which are respectively mounted on both sides of the seal. The seal is used to separate the originally continuous outer sheath structure, thereby avoiding the problem of oil seeping from the gap between the outer sheath and the cable.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable assembly and sealing for engines passing through the cabin, and particularly provides a seal for an engine cable passing through the cabin. Background Art

[0002] At present, engines are usually assembled in independent casings. Some engine cables need to be assembled through the cabin to achieve electrical connection of accessories. Oil leakage is likely to occur at the cable passing holes in the engine casing. Most sealing methods are to perform secondary sealing assembly on the engine casing after the cables are installed. However, this sealing method has problems such as long cable installation time and inconvenient disassembly after installation. An outer sheath is usually sleeved between the cable and the seal to protect the cable outer skin from abrasion by the sharp edges of the seal. However, since the cable is a flexible part, the cable will swing when affected by vibration, resulting in a gap between the outer sheath and the cable, and a small amount of oil will seep out from the gap between the outer sheath and the cable. Summary of the Invention

[0003] To solve the above problems, the present invention provides a seal for an engine cable passing through the cabin to seal the gap between the perforation in the casing wall and the cable.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a seal for an engine cable passing through the cabin, the seal includes a middle sleeve, an extended sleeve, and a half sleeve. The half sleeve is integrally formed on the outside of the extended sleeve, and the extended sleeve is integrally formed on both sides of the middle sleeve. The inner cavities of the middle sleeve and the extended sleeve are connected to form a potting cavity.

[0005] Further, a through-cabin hole is provided on the outer wall of the external casing, the seal is inserted into the inside of the through-cabin hole, and the outer wall of the middle sleeve is in contact with the inner wall of the through-cabin hole.

[0006] Further, a groove is provided on the outer wall of the middle sleeve.

[0007] Further, a sealing ring is embedded in the groove, the sealing ring is in close contact with the inner wall of the through-cabin hole, and the sealing ring and the through-cabin hole are in an interference fit relationship.

[0008] Further, the seal is sleeved on the outside of the cable, and the outer skin of the cable is in clearance fit with the inner wall of the potting cavity.

[0009] Further, the cable passes through the potting cavity, and the gap between the cable and the potting cavity is filled with potting material.

[0010] Further, a sheath is sleeved on the outside of the extended sleeve and the half sleeve.

[0011] Further, anti-slip patterns are evenly provided on the outer walls of the extended sleeve and the half sleeve.

[0012] Furthermore, cable ties are assembled on the outside of the overlapping part of the half sleeve and the cable and the overlapping part of the sheath and the extension sleeve.

[0013] The beneficial effects of using the present invention are as follows:

[0014] 1. After the staff selects a sealing member with appropriate size through inspection, the sealing member is directly assembled at a suitable position on the outer length of the cable. After arriving at the construction site, the sealing member can be directly inserted into the cable penetration hole, without the need for secondary sealing assembly, improving the on-site construction efficiency;

[0015] 2. During the potting operation, the potting adhesive is statically placed, dried at low temperature, dried at high temperature, and finally cooled in the furnace, effectively ensuring the sealing effect between the sealing member and the cable;

[0016] 3. The sheath related to this sealing member is different from the original outer sheath design that penetrates the cable penetration hole. Instead, the sheath is divided into two sections, respectively sleeved on both sides of the sealing member, and the sealing member is used to cut off the originally continuous outer sheath structure, effectively avoiding the problem of oil leakage from the gap between the outer sheath and the cable;

[0017] 4. This sealing member can be assembled in the factory, unifying the assembly standard of the sealing member, and ensuring that the sealing effect after the assembly of the sealing member is not affected by the proficiency of on-site construction personnel. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the sealing member of the present invention;

[0019] Figure 2 It is a schematic diagram of the use state of the sealing member of the present invention.

[0020] The reference signs include: 1 - sealing member; 101 - middle sleeve; 102 - extension sleeve; 103 - half sleeve; 104 - groove; 105 - anti-slip pattern; 106 - potting cavity; 2 - cable penetration hole; 3 - cable; 4 - sheath; 5 - cable tie; 6 - sealing ring. Detailed Description of the Invention

[0021] The present invention will be described in detail below with reference to the accompanying drawings.

[0022] Refer to Figure 1 - Figure 2 , a sealing member for a cable penetrating a cabin of an engine, the sealing member 1 includes a middle sleeve 101, an extension sleeve 102 and a half sleeve 103. The half sleeve 103 is integrally formed on the outside of the extension sleeve 102, and the extension sleeve 102 is integrally formed on both sides of the middle sleeve 101. The inner cavities of the middle sleeve 101 and the extension sleeve 102 are connected to form a potting cavity 106.

[0023] The outer diameter of the middle sleeve 101 of the seal 1 is adjusted according to the actual requirements during equipment assembly, and seals 1 of various different size specifications are designed and produced to meet the requirements of perforations of different standard systems.

[0024] A cable passing hole 2 is provided on the outer wall of the outer casing. The seal 1 is inserted into the interior of the cable passing hole 2, and the outer wall of the middle sleeve 101 is in contact with the inner wall of the cable passing hole 2.

[0025] A groove 104 is provided on the outer wall of the middle sleeve 101.

[0026] The size of the groove 104 on the middle sleeve 101 is designed according to GB / T3452 to ensure that the groove 104 can be combined with a standardized sealing ring 6.

[0027] A sealing ring 6 is embedded in the groove 104. The sealing ring 6 is in close contact with the inner wall of the cable passing hole 2, and an interference fit relationship exists between the sealing ring 6 and the cable passing hole 2.

[0028] The seal 1 is sleeved on the outside of the cable 3, and a clearance fit exists between the outer skin of the cable 3 and the inner wall of the potting cavity 106.

[0029] The cable 3 penetrates through the potting cavity 106, and potting material is filled in the gap between the cable 3 and the potting cavity 106.

[0030] A sheath 4 is sleeved on the outside of the extension sleeve 102 and the half sleeve 103.

[0031] Anti-slip patterns 105 are evenly provided on the outer walls of the extension sleeve 102 and the half sleeve 103.

[0032] Binding straps 5 are assembled on the outside of the overlapping part of the half sleeve 103 and the cable 3 and the overlapping part of the sheath 4 and the extension sleeve 102.

[0033] Preferably, the binding strap 5 is a steel binding strap made of metal material. The internal cable is tightened at the position of the half sleeve 103 at both ends of the seal 1 through the binding strap 5 to increase the fixing strength of the wire harness. The sheath outside the cable is tightened on the sleeve-type structure position of the seal 1 through the binding strap 5, so that the seal 1 and the cable are integrated.

[0034] After the bundled cable 3 is inserted into the perforation of the seal 1, the position of the cable 3 is first fixed with fiberglass cloth or other high-temperature resistant materials, and then high-temperature glue is filled into the potting cavity 106 to complete the potting process;

[0035] During the potting operation process, it should be ensured that the glue is filled tightly and fully at the potting position to avoid defects such as air holes and lack of material;

[0036] If the space of the potting cavity 106 is small due to actual installation conditions, non-alkali fiberglass tape can be appropriately wound around the outside of the cable 3 to fill the potting cavity 106. Only the potting and sealing treatment needs to be done at the position of the half sleeve 103 and the port of the potting cavity 106;

[0037] During the potting operation, the potting compound is statically placed, dried at low temperature, dried at high temperature, and finally cooled in the furnace to ensure the sealing effect of the potting, so as to prevent the oil from leaking out of the gap between the seal 1 and the cable 3.

[0038] The sheath 4 related to the seal 1 is different from the original outer sheath design that penetrates the through-cabin hole. Instead, the sheath 4 is divided into two sections and sleeved on both sides of the seal 1 respectively. The seal 1 is used to cut off the original continuous outer sheath structure. On the premise of not affecting the protection effect of the sheath 4, the purpose of preventing the oil from leaking out of the gap between the sheath 4 and the cable 3 is achieved.

[0039] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, many changes can be made in the specific implementation manner and application scope. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A seal for a cable passing through a cabin, characterized in that: The seal includes a middle sleeve, an extended sleeve and a half sleeve. The half sleeve is integrally formed on the outside of the extended sleeve, and the extended sleeve is integrally formed on both sides of the middle sleeve. The inner cavities of the middle sleeve and the extended sleeve are connected to form a potting cavity; A cabin penetration hole is provided on the outer wall of the outer casing, and the seal is inserted into the inside of the cabin penetration hole, and the outer wall of the middle sleeve fits against the inner wall of the cabin penetration hole; A groove is provided on the outer wall of the middle sleeve; A sealing ring is embedded in the groove, and the sealing ring fits tightly against the inner wall of the cabin penetration hole, and the sealing ring and the cabin penetration hole are in an interference fit relationship; The seal is sleeved on the outside of the cable, and the outer skin of the cable has a clearance fit with the inner wall of the potting cavity; A sheath is sleeved on the outside of the extended sleeve and the half sleeve.

2. The seal for a cable of a through-hull engine according to claim 1, characterized in that: The cable penetrates through the potting cavity, and potting material is filled in the gap between the cable and the potting cavity.

3. The seal for a cable of a cabin-piercing engine according to claim 1, wherein: Anti-slip patterns are evenly provided on the outer walls of the extended sleeve and the half sleeve.

4. The seal for a cable passing through a cabin engine according to claim 1, characterized in that: Zip ties are assembled on the outside of the overlapping part of the half sleeve and the cable and the overlapping part of the sheath and the extended sleeve.

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