Cable Sealing Device and Cable Sealing Method

Abstract

Embodiments of the present disclosure relate to the technical field of cable sealing and installation, and provide a cable sealing device and a cable sealing method. The device includes a cylinder body having a sealing cavity, a filling hole, and an exhaust hole; a pair of sealing covers fixedly covering the openings at both ends of the cylinder body and having through holes; a pair of cable fastening assemblies having cable fastening holes through which the cable segments that are disconnected from each other are respectively sealed and passed through, and being fixedly and sealingly combined with the through holes of the pair of sealing covers respectively, so that the first cable ends and the second cable ends of the two cable segments extend into the sealing cavity; wherein, the first cable ends and the second cable ends are arranged to expose the respective core wires included therein; an insulating spacer is disposed in the sealing cavity and is provided with a set of two-way connectors; each two-way connector connects a pair of paired core wires between the first cable end and the second cable end. Using this device, good and convenient longitudinal sealing of the cable can be achieved, and a sealing material resistant to the saturated steam pressure at accident high temperatures can also be used to maintain the sealing reliability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cable sealing installation, and particularly to a cable sealing device and a cable sealing method. Background Art

[0002] The longitudinal cable sealing device is a very important part in ship construction. The ship cable sealing work mainly includes two parts: the sealing of compartment cables and the longitudinal cable sealing. The sealing of compartment cables has met the technical requirements through relevant tests. For the longitudinal cable sealing, currently, materials such as heat shrinkable tubes are mainly used to perform heat shrinkage treatment on the cables and the ends to ensure the longitudinal sealing performance of the cables.

[0003] If under normal working conditions, the sealing technical requirements can be met, but in the event of an accident, it is likely to fail due to the high temperature and pressure during the accident and cannot meet the sealing requirements. Therefore, there is currently a lack of a reliable technical solution for longitudinal cable sealing. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present disclosure is to provide a cable sealing device and a cable sealing method to solve the problems in the related art.

[0005] The first aspect of the present disclosure provides a cable sealing device for sealing a cable passing between the inside and outside of a compartment on a ship; the device includes: a cylinder body, including: a sealing cavity extending axially, opposite ends openings communicating with the sealing cavity, and a filling hole and an exhaust hole communicating with the sealing cavity; the filling hole is used for filling a sealing material into the sealing cavity; the filling hole and the exhaust hole are axially spaced apart; a pair of sealing covers fixedly covering the two ends openings and having a through hole; a pair of cable fastening assemblies having cable fastening holes through which the respectively disconnected cable segments are hermetically passed and hermetically and fixedly coupled to the through holes of the pair of sealing covers respectively, so that the first cable ends and the second cable ends of the two cable segments extend into the sealing cavity; wherein, the first cable ends and the second cable ends are arranged to expose the respective core wires included; an insulating spacer detachably disposed in the sealing cavity and provided with a set of two-way connectors; each two-way connector connects a pair of paired core wires between the first cable end and the second cable end.

[0006] In an embodiment of the first aspect, the insulating spacer is fixedly connected to at least one of the sealing covers at a distance through a support fixing mechanism.

[0007] In an embodiment of the first aspect, both ends of the support fixing mechanism form threaded portions and are respectively fixedly connected to the insulating spacer and the sealing cover in a screwed manner.

[0008] In an embodiment of the first aspect, the support and fixing mechanism includes a plurality of screw rods arranged circumferentially and spaced apart along the insulating spacer; one end of each screw rod is fixed to the sealing cover, and the other end passes through the insulating spacer and exposes a threaded section for screwing with a nut to fixedly connect the insulating spacer and the sealing cover.

[0009] In an embodiment of the first aspect, the sealing cover is fixedly connected to the cylinder body through a screw locking mechanism; the screw locking mechanism includes: a screw hole provided on the side of the sealing cover facing the cylinder wall of the cylinder body; a through hole provided on the cylinder body and corresponding to the position of the screw hole; and a screw locking member passing through the through hole to be screwed with the screw hole.

[0010] In an embodiment of the first aspect, the perfusion hole is located in the middle of the cylinder body; there are at least two exhaust holes, which are respectively located on both sides of the perfusion hole.

[0011] In an embodiment of the first aspect, the insulating spacer is implemented as an insulating electrical wood board; and / or, the cable fastening assembly is implemented as a cable gland.

[0012] In an embodiment of the first aspect, the two-way joint is implemented as a two-way cold pressing joint.

[0013] In an embodiment of the first aspect, the cable sealing device is implemented as at least one of the following: 1) The two-way joint is formed with a radiation shielding layer surrounding the connected paired core wires; 2) The sealing material is a material resistant to the radiation transmitted by the cable and / or added with a radiation-resistant filler; 3) The sealing material is implemented as a sealant; or, the sealing material is implemented as a modified epoxy sealant.

[0014] The second aspect of the present disclosure provides a cable sealing method, which is applied to the cable sealing device as described in any one of the first aspect. The method includes: obtaining a pair of sealing covers carrying the cable fastening assembly separated from both ends of the cylinder body; respectively fastening and sealingly passing the mutually disconnected cable segments through the cable fastening openings on the corresponding sealing covers, and exposing the core wires of the first cable end and the second cable end; respectively fixing and connecting the paired core wires between the first cable end and the second cable end through the respective two-way joints on the insulating spacer; moving the insulating spacer into the sealing cavity; fixing the pair of sealing covers to both ends of the cylinder body, and forming a seal between the cable fastening assembly and the sealing cover; placing the cylinder body horizontally with the perfusion hole facing upward, and pouring a sealing material into the sealing cavity through the perfusion hole until the sealing material overflows from the exhaust hole.

[0015] As described above, the embodiments of the present disclosure relate to the technical field of cable sealing installation, and provide a cable sealing device and a cable sealing method. The device includes a cylinder body having a sealing cavity, a filling hole, and an exhaust hole; a pair of sealing covers fixedly arranged at both ends with openings, and having a through hole; a pair of cable fastening components having cable fastening holes through which the mutually disconnected cable segments are respectively sealed and passed through, and are fixedly and sealingly combined with the through holes of the pair of sealing covers respectively, so that the first cable ends and the second cable ends of the two cable segments extend into the sealing cavity; wherein, the first cable ends and the second cable ends are arranged to expose each core wire contained therein; an insulating spacer is arranged in the sealing cavity and is provided with a set of two-way connectors; each two-way connector connects a pair of paired core wires between the first cable end and the second cable end. Using this device can achieve good and convenient longitudinal sealing of the cable, and a sealing material resistant to the saturated steam pressure at accident high temperatures can also be used to maintain the sealing reliability. Description of the Drawings

[0016] Figure 1 Show a longitudinal partial cross-sectional schematic view of the cable sealing device in the embodiments of the present disclosure.

[0017] Figure 2 Show a partial cross-sectional structural schematic view of the cable sealing device without installing the sealed cable and the two-way connector in the embodiments of the present disclosure.

[0018] Figure 3 Show a flow schematic view of the cable sealing method in the embodiments of the present disclosure. Detailed Embodiments

[0019] The following uses specific specific examples to illustrate the embodiments of the present disclosure. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments. The details in the present disclosure can also be variously modified or changed according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0020] The following takes the drawings as a reference and details the embodiments of the present disclosure so that those skilled in the technical field to which the present disclosure belongs can easily implement it. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0021] In the descriptions of the present disclosure, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or a group of embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples represented in the present disclosure and the features of different embodiments or examples.

[0022] In addition, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the descriptions of the present disclosure, the meaning of "a group" is two or more unless otherwise specifically defined.

[0023] To clearly illustrate the present disclosure, devices irrelevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0024] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection", but also the case of "indirect connection" with other elements placed therebetween. In addition, when it is said that a certain device "includes" a certain component, unless there is a particularly contrary record, it does not exclude other components, but means that other components can also be included.

[0025] Although in some examples the terms first, second, etc. are used herein to denote various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the stated features, steps, operations, elements, modules, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or a group of other features, steps, operations, elements, modules, items, kinds, and / or groups. The term "or" and "and / or" used herein are interpreted as inclusive, or meaning any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C". An exception to this definition occurs only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0026] The technical terms used herein are only for referring to specific embodiments and are not intended to limit the present disclosure. The singular forms used herein also include the plural forms as long as the statements do not clearly indicate the contrary meaning. The meaning of "including" used in the specification is to embody specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0027] Although not defined differently, including the technical terms and scientific terms used herein, all terms have the same meaning as generally understood by those skilled in the technical field to which the present disclosure pertains. Terms defined in commonly used dictionaries are additionally interpreted to have meanings consistent with the relevant technical literature and the currently presented information, and shall not be overly interpreted as ideal or overly formulaic meanings as long as they are not defined.

[0028] Overview of Sealed Cables The sealing of cables is divided into longitudinal sealing and transverse sealing. Longitudinal sealing means that when the cable is subjected to water pressure, water will not flow axially inside it. Transverse sealing means that when the cable is subjected to water pressure, water will not penetrate through the sheath radially along the cable into the interior. Generally, cables have a continuously sealed sheath and have the ability of transverse sealing, so there is no special structure for transverse-sealed cables. For cable longitudinal sealing technology, currently, materials such as heat-shrinkable tubes are mainly used to perform heat-shrinkage treatment on the cable and the end to ensure the longitudinal sealing performance of the cable. Although it can meet the sealing requirements under normal working conditions, in the event of an accident, it is likely to fail to meet the sealing requirements due to the high-temperature pressure during the accident. Therefore, there is currently a lack of a reliable cable longitudinal sealing technical solution.

[0029] In view of this, in the embodiments of the present disclosure, a cable sealing device is provided to solve the problems in the related art. The cable sealing device can be used for sealing the cables passing through between the inside and outside of the cabin of a ship.

[0030] Please refer to Figure 1 as shown. Figure 1 A longitudinal partial cross-sectional schematic diagram of the cable sealing device in the embodiments of the present disclosure. Among them, "longitudinal" represents the extending direction of the cable.

[0031] In Figure 1 , it is shown that the cable sealing device 100 may include a cylinder 110, a pair of sealing covers 120, a pair of cable fastening assemblies 130, an insulating spacer 140, and a set of two-way joints 150.

[0032] The cylinder body 110 includes a sealing cavity 111. The sealing cavity 111 extends along an axis direction, hereinafter referred to as the "axial direction" for short. Specifically, the axial direction corresponds to the cable extension direction. As an example, the cylinder body 110 can be cylindrical, square-columnar or other columnar shapes. The cylinder body 110 has openings at opposite ends communicating with the sealing cavity 111. The cylinder body 110 is further provided with a filling hole 113 and an exhaust hole 114 communicating with the sealing cavity 111. The filling hole 113 is used to fill the sealing cavity 111 with a liquid sealing material, and the exhaust hole 114 is used to discharge the air extruded by the sealing material when filling the sealing material. When filling the sealing material, the overflow of the sealing material from the exhaust hole 114 can indicate that the sealing cavity 111 is filled with the sealing material.

[0033] In some embodiments, the filling hole 113 and the exhaust hole 114 can be arranged at intervals along the axial direction, that is, arranged at intervals along the direction parallel to the axis on the wall surface of the cylinder body 110. Thus, when the cylinder body 110 is placed horizontally and the filling hole 113 is placed upward to fill the sealing material, the filling hole 113 and the exhaust hole 114 can be on the same horizontal line, thereby ensuring that the sealing cavity 111 is completely filled when the sealing material overflows from the exhaust hole 114. In some embodiments, the filling hole 113 can be one located in the middle of the cylinder body 110, and the exhaust hole 114 can have at least two, respectively located on both sides of the filling hole 113. Optionally, the exhaust holes 114 on both sides are symmetrically arranged with respect to the filling hole 113. Thus, the sealing material filled in the middle can spread to both sides to discharge the gas from the exhaust holes 114 on both sides. In other embodiments, only one exhaust hole 114 can also be provided. The aperture of the filling hole 113 can be larger than the aperture of the exhaust hole 114. The positions, sizes, etc. of the filling hole 113 and the exhaust hole 114 can all be changed according to actual needs.

[0034] In some embodiments, the sealing material is implemented as a sealant. Preferably, the sealing material is implemented as a modified epoxy sealant (such as epoxy resin). As an example, a modified epoxy sealant can be a new material obtained by adding other components or chemically modifying traditional epoxy resin to improve its performance. For example, if traditional epoxy resin is brittle, its toughness can be improved by adding a toughening agent. Another example is that the maximum heat resistance of traditional epoxy resin is 150 degrees Celsius, and its heat resistance grade can be improved through modification to reach above 200 degrees Celsius, and the curing time of flexible epoxy resin can be shortened, etc. In an alternative example, the sealing material uses a two-component (A and B components) ratio. Component A is the main agent (for example, containing components such as epoxy resin, active diluent, accelerator, etc.), and component B is the curing agent (for example, containing components such as curing agent, accelerator, etc.). The weight ratio is A:B = 10:1. After stirring and mixing evenly, it is evacuated and then poured. Optionally, when determining whether the environmental adaptability performance of the sealant is qualified, the sealant can adapt to salt spray, mildew, humid heat environments, be oil-resistant, acid and alkali-resistant, corrosion-resistant, high-temperature and high-pressure resistant, non-toxic, and meet the requirements of standards such as GJB150.9-86, GJB150.10-86, GJB150.11-86, GJB150.14-86, GB / T2406-93, GB / T3512-01, GB / T14843-09, etc. Thus, it can be ensured that it will not melt under the high-temperature saturated steam pressure in cable accidents, avoiding seal failure.

[0035] In some alternative embodiments, in scenarios where it is necessary to prevent the escape of harmful radiation (such as neutron rays, gamma rays, etc. in nuclear radiation), the sealing material is a radiation shielding material or a filler added with a radiation shielding material. For example, when the sealing material is a modified epoxy sealant, the sealing material can be implemented as a silicone-modified epoxy resin. A silicone-modified epoxy resin is a composite material obtained by mixing and modifying a silicone compound with an epoxy resin. Its modification mainly improves the performance of the resin through the interaction between the silicone compound and the epoxy resin molecules. Or, the radiation shielding effect can be achieved by adding anti-radiation fillers to the epoxy resin matrix, such as adding anti-radiation heavy metal oxides (such as lead tetroxide, yttrium oxide, germanium oxide, etc.). In an example of the anti-radiation requirements in nuclear power application scenarios, optionally, when determining whether the anti-radiation performance of the sealant is qualified, it can be determined that the sealant is qualified when the tensile strength, elongation at break, Shore hardness, relative permanent deformation, etc. of the sealant meet the requirements of standards such as GB / T1701-01, GB / T531.1-08, GB / T7759-96, etc. after being irradiated by rays of corresponding intensity in the nuclear power application scenario (for example, the absorbed dose reaches a predetermined value, such as 3×10 5 Gy~5×10 5 Gy, etc.).

[0036] A pair of the sealing covers 120 are respectively fixedly covered on the two ends with openings and having a through hole. The sealing covers 120 have the same shape that matches the openings at both ends of the cylinder body 110. The sealing covers 120 can at least partially enter the openings and be fixed within the openings. In some embodiments, the sealing covers 120 can be fixedly connected to the cylinder body 110 through a screw locking mechanism. Specifically describe the structure of the screw locking mechanism. The side surface of the sealing cover 120 facing the wall of the cylinder body 110 is provided with screw holes. The cylinder body 110 is provided with through holes corresponding to the positions of the screw holes. And, a screw locking member 160 (such as a screw) passes through the through hole to be screwed with the screw hole, thereby fixing the sealing cover 120 to the cylinder body 110. The through hole and the screw hole can extend radially along the direction perpendicular to the axial direction of the sealing cavity 111.

[0037] Each of the cable fastening assemblies 130 is hermetically fixed to the through hole of one of the sealing covers 120. In some embodiments, the fixing manner of the cable fastening assembly 130 to the sealing cover 120 can include, for example, clamping, screw locking, etc. For example, the cable fastening assembly 130 has a neck that is inserted into the through hole, and the neck is threaded to be threadedly engaged with a nut 180 to fix the cable fastening assembly 130 to the sealing cover 120. The cable fastening assembly 130 has a cable fastening port through which the respectively disconnected cable segments 200 can be hermetically inserted. By disconnecting the cables transmitted through the compartment at a suitable position of the cable (such as a position close to the electrical equipment inside the cabin), the first cable end 201 and the second cable end of the two cable segments 200 are formed, and the first cable end 201 and the second cable end of the two cable segments 200 are respectively inserted through the cable fastening port of one of the cable fastening assemblies 130 corresponding to the cable fastening assembly 130 and the sealing cover 120. Thus, when a pair of sealing covers 120 are fixed to the two ends of the cylinder body 110, the first cable end 201 and the second cable end extend into the sealing cavity 111 and can be arranged oppositely. As an example, a sealing filler can be provided in the gap between the cable fastening assembly 130 and the inserted cable segment 200. As an example, a sealing filler can be provided in the gap between the cable fastening assembly 130 and the through hole of the sealing cover 120.

[0038] In some embodiments, the cable fastening assembly 130 can be implemented as a cable gland. Among them, a cable gland is a device for protecting cables, filling the gaps around the cables, forming a waterproof environment, and supporting and protecting the cables. The cable gland can play the roles of introducing cables, fixing positions to achieve sealing and explosion isolation, and has the advantages of excellent explosion isolation performance, safe and reliable structure, simple and convenient installation, high protection level, etc. According to different uses, the cable gland can be divided into forms such as welded type, riveted type, clamped type, pipe type, etc., and can be made of materials such as carbon steel, brass, stainless steel or nylon.

[0039] In some embodiments, the cable fastening assembly 130 may include a pressure cylinder 131 and a gland 132. One end of the pressure cylinder 131 is fixed to the through-hole of the sealing cover 120, and the gland 132 is fixed to the other end of the pressure cylinder 131. As an example, the pressure cylinder 131 and the gland 132 are in threaded engagement, and the cable section 200 can be fixed by screwing the gland 132 into the pressure cylinder 131. Furthermore, the pressure cylinder 131 forms a neck combined with the through-hole, and a hoop member is used to cooperate with the neck passing through the through-hole to fix the pressure cylinder 131 to the sealing cover 120. As an example, the pressure cylinder 131 and the hoop member can be in threaded engagement. For example, the neck is a threaded section with external threads, and the hoop member is a nut or the like. As an example, sealing packing can be provided in the gap between the gland 132 and the pressure cylinder 131 and the penetrated cable section 200. As an example, sealing packing can be provided in the gap between the pressure cylinder 131 and the through-hole of the sealing cover 120.

[0040] Wherein, the first cable end 201 and the second cable end are arranged to expose each contained core wire 203. Since the cable section 200 to which the first cable end 201 and the second cable end belong is obtained by disconnecting the same cable, the core wires 203 of the first cable end 201 and the second cable end correspond to each other one by one.

[0041] The insulating spacer 140 is detachably disposed in the sealing cavity 111. The insulating spacer 140 is provided with a set of two-way connectors 150, and each two-way connector 150 connects a pair of paired core wires 203 between the first cable end 201 and the second cable end. In some embodiments, the insulating spacer 140 may be formed with a plurality of through-holes, and a two-way connector 150 may be fixedly inserted through each through-hole. In some embodiments, the insulating spacer 140 is implemented as an insulating electrical board, which has the advantages of not generating static electricity, being wear-resistant and high-temperature resistant. In some embodiments, the two-way connector 150 is a two-way cold-press connector. By inserting the paired core wires 203 into the two interfaces of the two-way cold-press connector, the cable and the connector can be tightly pressed and combined together by pressure. Compared with traditional welding or bolt fixing, connecting the paired cable core wires 203 by the cold-press connector method is more convenient, safe, stable and corrosion-resistant, and has higher conductivity and longer service life.

[0042] In some alternative embodiments, the two-way connector 150 is formed with a radiation shielding layer surrounding the connected paired core wires 203. For example, the radiation shielding layer can also be located on the outer wall of the two-way connector 150. In a further example, the radiation shielding layer can be implemented as a silicone-modified polymer, such as silicone-modified epoxy resin, etc.; it can also be implemented as a filler added with radiation-resistant metal oxides.

[0043] In some embodiments, the insulating spacer 140 is fixedly connected to the cylinder 110 or the sealing cover 120. Exemplarily, the insulating spacer 140 may be fixedly connected to at least one of the sealing covers 120 at a spaced-apart distance by a support fixing mechanism. As Figure 1 and Figure 2 shown, threaded portions are formed at both ends of the support fixing mechanism and are fixedly connected to the insulating spacer 140 and the sealing cover 120 in a screwed manner. Specifically, the support fixing mechanism includes a plurality of screw rods 170, and the plurality of screw rods 170 are arranged at intervals along the circumferential direction of the insulating spacer 140. One end of each screw rod 170 is fixed to the sealing cover 120, and the other end thereof is provided for passing through the insulating spacer 140 and exposing a threaded section for screwing with a nut to fixedly connect the insulating spacer 140 and the sealing cover 120. It should be noted that in other embodiments, the insulating spacer 140 may also be fixedly connected to the inner wall of the cylinder 110 by, for example, a connecting mechanism / bracket, etc., in combination with a clamping or screwing manner, or may be fixedly connected to the two sealing covers 120 covering the cylinder 110 one by one in sequence. For example, it is fixed to one of the sealing covers 120 by a screw rod 170, and a clamping structure (such as a clamping member and a clamping opening, etc.) with a pre-configured clamping fit is provided between the other sealing cover 120 and the insulating spacer 140. When the sealing cover 120 is covered on the cylinder 110, the clamping of the clamping structure (such as the clamping member being clamped into the clamping opening) is realized, etc., so that the fixed positional relationship between the insulating spacer and the two sealing covers 120 can be strengthened. Therefore, it can be seen that the specific fixing structure of the insulating spacer 140 is not limited by the illustrated example.

[0044] Please refer to Figure 2 , Figure 2 which shows a partial cross-sectional structural view of the cable sealing device 100 without the installation of a sealed cable and a two-way joint in the embodiments of the present disclosure.

[0045] In Figure 2 an example, optionally, the sealing cover 120 may be pre-fixed on the cylinder 110. By unscrewing the locking member 160 from the screw hole of the sealing cover 120, the sealing cover 120 can be removed to perform operations such as cable threading. In Figure 2 an example, optionally, the cable fastening assembly 130 may be pre-fixed on the sealing cover 120, thus facilitating cable threading. In Figure 2In the example, optionally, the insulating spacer 140 can be pre-fixed in the sealing cavity 111 through the screws 170 of the support fixing mechanism. By loosening the nut 180 screwed onto the screw 170, the insulating spacer 140 can be removed from the sealing cavity 111. After the cable is passed through and the core wires 203 are butted, the sealing cover 120 and the insulating spacer 140 are restored to their original positions on the cylinder 110. Through the structure of the integrally detachable cable sealing device 100, scattered parts can be reduced, which is convenient for carrying and construction operations and prevents parts from being lost.

[0046] Exemplarily, the support fixing mechanism may include three screws 170 and corresponding three nuts, which are uniformly arranged circumferentially along the insulating spacer 140. As an example, the two-way joints 150 on the insulating spacer 140 are uniformly arranged in a centrosymmetric pattern. For example, the perforations 141 are distributed in a hexagonal pattern.

[0047] Another exemplarily, the other end of the screw 170 in the support fixing mechanism can also be fixed to the sealing cover 120 by a nut 180 cooperating with a threaded section passing through the sealing cover 120.

[0048] As can be seen from the above, through the insulating spacer 140 provided with the two-way joint 150, each pair of paired core wires 203 can be connected within the sealing cavity 111 to complete the reconnection of the disconnected cable and be sealed by the sealing cavity 111. By "disconnecting" the cable and then re-completing the "connection" and "sealing" of the cable section 200 within the sealing device, only a convenient small structural change to the cable is required, and the cable sealing device 100 can be used to complete the good vertical sealing of the cable, taking into account both the sealing effect and the operation convenience. And, according to the above embodiments, it is also possible to effectively prevent radiation conduction by providing a sealing material or a shielding and absorbing material for shielding radiation (such as nuclear radiation) in the cable sealing device 100.

[0049] As Figure 3 shown, a schematic flow diagram of a cable sealing method in an embodiment of the present disclosure is shown. The cable sealing method can be applied to the cable sealing device 100 in any of the previous embodiments.

[0050] The cable sealing method includes:

[0051] Step S301: Obtain a pair of sealing covers 120 carrying the cable fastening assembly 130 separated from both ends of the cylinder 110.

[0052] In some embodiments, by unscrewing the screw locks 160 at both ends of the cylinder 110, a pair of sealing caps 120 are detached from the cylinder 110. Further, if the insulating spacer 140 is pre-fixed in the sealing cavity 111, the insulating spacer 140 can be taken out of the sealing cavity 111 after the sealing cap 120 is removed. In some embodiments, the insulating spacer 140 can be removed from the screw 170 by unscrewing the nut 180.

[0053] It should be noted that in other embodiments, the sealing cap 120 and / or the insulating spacer 140 can also be pre-separated from the cylinder 110, not limited to the structure of the cable sealing device 100 that is pre-integrated as a whole.

[0054] Step S302: The disconnected cable segments 200 are respectively fastened and sealed through the cable fastening openings on the corresponding sealing caps 120, and the exposed parts of the core wires 203 of the first cable end 201 and the second cable end are formed.

[0055] In some embodiments, the first cable end 201 and the second cable end of the two cable segments 200 disconnected from the cable respectively pass through their corresponding sealing caps 120, and there is enough remaining length for passing through (for example, more than 10 millimeters). Further, a certain length of the insulating layer outside each core wire 203 of the first cable can be peeled off to expose enough length for the core wires 203 to be docked.

[0056] Step S303: Each pair of core wires 203 between the first cable end 201 and the second cable end are respectively fixed and connected through the respective two-way connectors 150 on the insulating spacer 140.

[0057] In some embodiments, each pair of core wires 203 pass through each two-way connector 150 on the insulating spacer 140 one by one and are fixed. As an example, when the two-way connector 150 is implemented as a two-way cold-pressed connector, the fixed electrical connection between each pair of core wires 203 is completed by applying pressure to the two-way cold-pressed connector.

[0058] In some embodiments, the two-way connector 150 may not be pre-installed on the insulating spacer 140, but is installed on the insulating spacer 140 when the insulating spacer 140 is taken out for docking the core wires 203. In this way, the two-way connector 150 can be selected for installation according to the actual requirements of the core wire docking, and the construction is more flexible.

[0059] Step S304: Move the insulating spacer 140 into the sealing cavity 111.

[0060] In some embodiments, the insulating spacer 140 is pushed back and fixed to the screw 170 to be fixed to the sealing cap 120.

[0061] Step S305: Fix a pair of the sealing covers 120 to both ends of the cylinder 110, and form a seal between the cable fastening assembly 130 and the sealing cover 120.

[0062] In some embodiments, the sealing covers 120 are reinstalled to the openings at both ends of the cylinder 110, and the fixation of the screw lock members 160 is restored. Optionally, the cable fastening assembly 130 can be sealed to complete the sealing of the sealing covers 120 at both ends.

[0063] Step S306: Place the cylinder 110 horizontally with the pouring hole 113 facing upward, and pour a sealing material into the sealing cavity 111 through the pouring hole 113 until the sealing material overflows from the exhaust hole 114.

[0064] In some embodiments, the horizontal placement of the cylinder 110 is, for example, a horizontal placement, with the pouring hole 113 facing upward, then the air outlet holes on the same axis also face upward. Pour a sealing material (such as a sealant, for example, a modified epoxy sealant) to complete the sealing inside the sealing cavity 111. The overflow of the sealing material from the exhaust hole 114 indicates that the sealing cavity 111 is filled.

[0065] In some embodiments, after pouring the sealing material, it can be left to stand until the sealant cures, and then the cable sealing operation is completed.

[0066] In summary, the embodiments of the present disclosure relate to the technical field of cable sealing installation, and provide a cable sealing device and a cable sealing method. The device includes a cylinder having a sealing cavity, a pouring hole, and an exhaust hole; a pair of sealing covers that fixedly cover the openings at both ends and have a through hole; a pair of cable fastening assemblies that have cable fastening holes through which the cable segments that are disconnected from each other are respectively sealed and passed through, and are hermetically and fixedly coupled to the through holes of the pair of sealing covers respectively, so that the first cable ends and the second cable ends of the two cable segments extend into the sealing cavity; wherein, the first cable end and the second cable end are arranged to expose the respective core wires included; an insulating spacer is provided in the sealing cavity and is equipped with a set of two-way connectors; each two-way connector connects a pair of paired core wires between the first cable end and the second cable end. Using this device, good and convenient longitudinal sealing of the cable can be achieved, and a sealing material resistant to the saturated steam pressure at accident high temperatures can also be used to maintain the sealing reliability.

[0067] The positive effects achieved by the present disclosure are:

[0068] 1) Adopt cable docking technology to ensure the safety and reliability of cable connection;

[0069] 2) Adopt cable sealing technology to ensure the sealing performance of the cable;

[0070] 3) Cable anti-radiation technology can be adopted to ensure that there is no ray conduction in the cable;

[0071] The adoption of the above-mentioned technology can ensure the electrical performance, sealing and radiation protection performance of the cable.

[0072] The above embodiments are only illustrative of the principles and effects of the present disclosure and are not intended to limit the present disclosure. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present disclosure should still be covered by the protection scope of the present disclosure.

Claims

1. A cable sealing device, characterized in that, Sealing for laying cables between the inside and outside of a ship's cabin; the device includes: A cylinder body, including: a sealing cavity extending axially, opposite ends openings communicating with the sealing cavity, and a filling hole and an exhaust hole communicating with the sealing cavity; the filling hole is used for filling sealing material into the sealing cavity; the filling hole and the exhaust hole are arranged at intervals along the axial direction; A pair of sealing covers, fixedly covering the two ends openings and having a threading opening; A pair of cable fastening assemblies, each having a cable fastening opening through which cable segments that are disconnected from each other are respectively sealed and passed through, and are respectively and fixedly sealed to the through openings of a pair of the sealing covers, so that the first cable ends and the second cable ends of the two cable segments extend into the sealing cavity; wherein, the first cable ends and the second cable ends are arranged to expose the respective core wires contained therein; wherein, the cable is disconnected at a position close to the power equipment inside the cabin to form the first cable ends and the second cable ends; the sealing material is a material resistant to harmful ray radiation transmitted by the cable and / or a modified epoxy sealing adhesive added with a filler resistant to harmful ray radiation; wherein, the material resistant to harmful ray radiation transmitted by the cable includes a silicone-modified epoxy resin, or, the modified epoxy sealing adhesive added with a filler resistant to harmful ray radiation is implemented as a modified epoxy resin matrix added with a radiation-resistant filler, and the radiation-resistant filler includes heavy metal oxides; the harmful ray radiation includes nuclear radiation, and the corresponding absorbed dose of the modified epoxy sealing adhesive in the nuclear power application scenario reaches 3×10 5 Gy~5×10 5 After Gy, the tensile strength, elongation at break, Shore hardness and relative permanent deformation indexes of the sealing adhesive meet the requirements of the standards of GB / T1701-01, GB / T531.1-08, and GB / T7759-96; An insulating spacer, detachably arranged in the sealing cavity and provided with a set of two-way connectors; each two-way connector connects a pair of paired core wires between a first cable end and a second cable end; the two-way connector forms a radiation shielding layer around the connected paired core wires.

2. The cable sealing device according to claim 1, characterized in that, The insulating spacer is fixedly connected to at least one of the sealing covers at a spaced distance through a support fixing mechanism.

3. The cable sealing device according to claim 2, characterized in that, Both ends of the support fixing mechanism form threaded portions, respectively fixedly connected to the insulating spacer and the sealing cover in a screwing manner.

4. The cable sealing device according to claim 2, characterized in that, The support fixing mechanism includes a plurality of screw rods arranged at intervals along the circumferential direction of the insulating spacer; one end of the screw rod is fixed to the sealing cover, and the other end is for passing through the insulating spacer and exposing a threaded section for screwing with a nut to fixedly connect the insulating spacer and the sealing cover.

5. The cable sealing device according to claim 1, wherein, The sealing cover is fixedly connected to the cylinder body through a screwing locking mechanism; the screwing locking mechanism includes: A screw hole, arranged on the side of the sealing cover facing the cylinder wall of the cylinder body; A through hole, arranged on the cylinder body and corresponding to the position of the screw hole; A screwing locking member, passing through the through hole to be screwed with the screw hole.

6. The cable sealing device according to claim 1, characterized in that, The filling hole is located in the middle of the cylinder body; there are at least two exhaust holes, respectively located on both sides of the filling hole.

7. The cable sealing device according to claim 1, characterized in that, The insulating spacer is implemented as an insulating electrical board; and / or, the cable fastening assembly is implemented as a cable gland.

8. The cable sealing device according to claim 1, characterized in that, The two-way connector is implemented as a two-way cold pressing connector.

9. A cable sealing method, characterized in that, Applied to the cable sealing device according to any one of claims 1 to 8, the method includes: Obtaining a pair of sealing covers carrying the cable fastening assembly separated from both ends of the cylinder body; Respectively tightly and sealingly threading the mutually disconnected cable segments through the cable fastening openings on the corresponding sealing covers, and forming the exposure of the core wires of the first cable end and the second cable end; Respectively fixedly connecting the paired core wires between the first cable end and the second cable end through the respective two-way connectors on the insulating spacer; Moving the insulating spacer into the sealing cavity; Fixing the pair of sealing covers to both ends of the cylinder body, and forming a seal between the cable fastening assembly and the sealing cover; Placing the cylinder body horizontally with the filling hole facing upward, and filling the sealing cavity with sealing material through the filling hole until the sealing material overflows from the exhaust hole.

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