Cable sealing device and cable sealing method

Abstract

The embodiment of the invention relates to the technical field of cable sealing installation, and provides a cable sealing device and a cable sealing method.The device comprises a cylinder with a sealing cavity, a pouring hole and an exhaust hole; the pair of sealing covers fixedly cover the openings in the two ends of the cylinder body and are provided with penetrating openings; the pair of cable fastening assemblies is provided with cable fastening ports through which the mutually disconnected cable sections respectively penetrate in a sealing manner, and the cable fastening assemblies are respectively and fixedly combined with the penetrating ports of the pair of sealing covers in a sealing manner, so that the first cable ends and the second cable ends of the two cable sections extend into the sealing cavity; wherein the first cable end and the second cable end are arranged to expose each core wire contained in the first cable end and the second cable end; the insulating spacer is arranged in the sealing cavity and is provided with a group of two-way joints; each bidirectional joint connects a pair of paired core wires between the first cable end and the second cable end. By using the device, good and convenient longitudinal sealing of the cable can be realized, and a sealing material capable of resisting saturated steam pressure at accident high temperature can be used, so that the sealing reliability is kept.

Description

Technical Field

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

[0002] Cable longitudinal sealing device is a very important part in ship construction. The ship cable sealing work mainly includes two contents, the sealing of the bulkhead cable and the longitudinal sealing of the cable. The bulkhead cable sealing has been proved by relevant tests to meet the technical requirements. The longitudinal sealing of the cable currently mainly uses heat shrink tubing and other materials to heat shrink the cable and the terminal to ensure the longitudinal sealing performance of the cable.

[0003] If the sealing technology requirements can be met under normal working conditions, but in the event of an accident, it is easy to fail to meet the sealing requirements due to high temperature and pressure failure during the accident. Therefore, there is currently a lack of reliable cable longitudinal sealing technology solutions. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object 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 cables passing through between the inside and outside of a ship's cabin; the device comprises: a cylinder, comprising: a sealing cavity extending axially, two opposite end openings connected to the sealing cavity, and a filling hole and an exhaust hole connected to the sealing cavity; the filling hole is used to fill the sealing cavity with sealing material; the filling hole and the exhaust hole are arranged at intervals along the axial direction; a pair of sealing covers, fixedly covering the two end openings and having a passing opening; a pair of cable fastening assemblies, having cable fastening openings through which the disconnected cable segments are respectively sealed and passed, and are respectively fixedly and sealingly combined with the passing openings of a pair of sealing covers, so that the first cable end and the second cable end of the two cable segments are inserted into the sealing cavity; wherein the first cable end and the second cable end are configured to expose the core wires contained therein; an insulating spacer, detachably arranged in the sealing cavity, equipped with a group of two-way connectors; each of the two-way connectors 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 by a supporting and fixing mechanism while maintaining a spacing therebetween.

[0007] In an embodiment of the first aspect, threaded portions are formed at both ends of the supporting and fixing mechanism, which are respectively fixedly connected to the insulating spacer and the sealing cover in a screw-locking manner.

[0008] In an embodiment of the first aspect, the supporting and fixing mechanism includes a plurality of screws arranged at intervals along the circumference of the insulating spacer; one end of the screw is fixed to the sealing cover, and the other end is passed through the insulating spacer and exposes a threaded section so as to be screwed on a nut to fix 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, which is arranged on the side of the cylinder wall of the sealing cover facing the cylinder body; a through hole, which is arranged in the cylinder body and corresponds to the position of the screw hole; and a screw locking member, which passes through the through hole to screw into the screw hole.

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

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

[0012] In an embodiment of the first aspect, the bidirectional joint is implemented as a bidirectional cold-pressed joint.

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

[0014] A second aspect of the present disclosure provides a cable sealing method, which is applied to a cable sealing device as described in any one of the first aspects, the method comprising: obtaining a pair of sealing covers separated from the two ends of the cylinder and carrying the cable fastening assembly; fastening and sealing the disconnected cable segments through the cable fastening openings on the corresponding sealing covers, and forming exposure of the core wires of the first cable end and the second cable end; fixing and connecting the paired core wires between the first cable end and the second cable end through the two-way connectors on the insulating spacer; moving the insulating spacer into the sealing cavity; fixing a pair of the sealing covers to the two ends of the cylinder, and forming a seal between the cable fastening assembly and the sealing covers; placing the cylinder horizontally with the injection hole facing upward, and injecting sealing material into the sealing cavity through the injection hole until the sealing material overflows from the exhaust hole.

[0015] As described above, the disclosed embodiments relate to the technical field of cable sealing installation, and provide a cable sealing device and a cable sealing method, wherein the device comprises a cylinder having a sealing cavity, a filling hole and an exhaust hole; a pair of sealing covers, the fixed covers are provided with openings at both ends and have a through-hole; a pair of cable fastening assemblies, having cable fastening holes through which the disconnected cable segments are respectively sealed, and are respectively fixedly combined with the through-holes of the pair of sealing covers in a sealing manner, so that the first cable end and the second cable end of the two cable segments are inserted into the sealing cavity; wherein the first cable end and the second cable end are configured to expose the core wires contained therein; an insulating spacer, which 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. The device can realize good and convenient longitudinal sealing of the cable, and can also use sealing materials that are resistant to saturated steam pressure at high accident temperatures to maintain sealing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic longitudinal partial cross-sectional view of a cable sealing device in an embodiment of the present disclosure is shown.

[0017] Figure 2 A schematic diagram of the partial cross-sectional structure of the cable sealing device in an embodiment of the present disclosure when the sealed cable and the bidirectional connector are not installed.

[0018] Figure 3 A schematic diagram showing the flow of the cable sealing method in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0019] The following is an explanation of the embodiments of the present disclosure by specific examples, and 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, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0020] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0021] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction 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 may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0023] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0024] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0025] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0026] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify 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, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0028] Overview of Sealed Cables The sealing of cables is divided into longitudinal sealing and transverse sealing. The so-called longitudinal sealing means that when the cable is subjected to water pressure, water will not flow axially inside it. The so-called transverse sealing means that when the cable is subjected to water pressure, water will not pass through the sheath radially into the interior of the cable. Generally, cables have continuously sealed sheaths and have the ability to seal transversely, so transversely sealed cables have no special structure. The cable longitudinal sealing technology currently mainly uses heat shrink tubing and other materials to heat shrink 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, it is easy to fail to meet the sealing requirements due to failure due to high temperature pressure during the accident. Therefore, there is currently a lack of reliable cable longitudinal sealing technology solutions.

[0029] In view of this, a cable sealing device is provided in an embodiment of the present disclosure to solve the problems in the related art. The cable sealing device can be used to seal a cable passing between the inside and outside of a ship's cabin.

[0030] See also Figure 1 shown. Figure 1 A longitudinal partial cross-sectional schematic diagram of a cable sealing device in an embodiment of the present disclosure, wherein "longitudinal" refers to the extending direction of the cable.

[0031] exist Figure 1 In the figure, the cable sealing device 100 is shown to include a cylinder 110 , a pair of sealing covers 120 , a pair of cable fastening components 130 , an insulating spacer 140 and a set of two-way connectors 150 .

[0032] The cylinder 110 includes a sealing cavity 111. The sealing cavity 111 extends along an axial direction, hereinafter referred to as "axial direction". Specifically, the axial direction corresponds to the extension direction of the cable. As an example, the cylinder 110 can be cylindrical, square cylindrical or other cylindrical shapes. The cylinder 110 has openings at two opposite ends connected to the sealing cavity 111. The cylinder 110 is also provided with a filling hole 113 and an exhaust hole 114 connected to the sealing cavity 111. The filling hole 113 is used to fill the sealing cavity 111 with liquid sealing material, and the exhaust hole 114 is used to discharge the air squeezed out by the sealing material when the sealing material is poured. When the sealing material is poured, 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 injection holes 113 and the exhaust holes 114 may be arranged at intervals along the axial direction, that is, they are arranged at intervals on the wall surface of the cylinder 110 along the direction parallel to the axial line. Thus, when the cylinder 110 is placed horizontally and the injection hole 113 is placed upward to inject the sealing material, the injection hole 113 and the exhaust hole 114 may be located 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 injection hole 113 may be one located in the middle of the cylinder 110, and there may be at least two exhaust holes 114, which are respectively located on both sides of the injection hole 113. Optionally, the exhaust holes 114 on both sides are symmetrically arranged relative to the injection hole 113. Thus, the sealing material injected 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 may be provided. The aperture of the injection hole 113 may be larger than the aperture of the exhaust hole 114. The positions and sizes of the injection holes 113 and the exhaust holes 114 can 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, the modified epoxy sealant can be a new material obtained by adding other ingredients to traditional epoxy resin or chemically modifying it to improve its performance. For example, if traditional epoxy resin is brittle, its toughness can be improved by a toughening agent. For another example, if the maximum heat resistance of traditional epoxy resin is 150 degrees, its heat resistance level can be improved by modification to more than 200 degrees, which can shorten the curing time of flexible epoxy resin. In an optional example, the sealing material uses a two-component (A, B component) ratio, component A is the main agent (for example, containing epoxy resin, active diluent, accelerator and other components), component B is a curing agent (for example, containing curing agent, accelerator and other components), and the weight ratio is A: B = 10: 1, stirred and mixed, and poured after vacuuming. Optionally, when determining whether the environmental adaptability of the sealant is qualified, the sealant can be adapted to salt spray, mold, hot and humid environment, oil-resistant, acid-resistant, alkali-resistant, corrosion-resistant, high temperature and high pressure-resistant, non-toxic, and meet the requirements of GJB150.9-86, GJB150.10-86, GJB150.11-86, GJB150.14-86, GB / T2406-93, GB / T3512-01, GB / T14843-09 and other standards to select a modified epoxy sealant with corresponding performance. In this way, it can meet the requirements that the sealant will not be melted under the high temperature saturated steam pressure of the cable accident, thus avoiding sealing failure.

[0035] In some optional embodiments, in scenarios where it is necessary to prevent the escape of harmful radiation (such as neutron rays and gamma rays in nuclear radiation), the sealing material is a radiation shielding material or a filler with a radiation shielding material. For example, when the sealing material is a modified epoxy sealant, the sealing material can be implemented as an organosilicon-modified epoxy resin. Organosilicon-modified epoxy resin is a composite material in which an organosilicon compound is mixed and modified with an epoxy resin. The modification mainly improves the performance of the resin through the interaction between the organosilicon compound and the epoxy resin molecules. Alternatively, radiation shielding can be achieved by adding radiation-resistant fillers to the epoxy resin matrix, such as adding radiation-resistant heavy metal oxides (such as lead tetroxide, yttrium oxide, germanium oxide, etc.). In the example of radiation-resistant requirements for nuclear power application scenarios, optionally, when determining whether the radiation-resistant performance of the sealant is qualified, the sealant can be irradiated with radiation 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.), the tensile strength, elongation at break, Shore hardness, relative permanent deformation and other indicators of the sealant meet the requirements of GB / T1701-01, GB / T531.1-08, GB / T7759-96 and other standards to be qualified.

[0036] A pair of sealing covers 120 are respectively fixedly covered on the two end openings and have a through-hole, and the sealing covers 120 are of the same shape as the two end openings of the barrel 110. The sealing covers 120 can at least partially enter the openings and be fixed in the openings. In some embodiments, the sealing covers 120 can be fixedly connected to the barrel 110 by a screw lock mechanism. The structure of the screw lock mechanism is specifically described. The sealing covers 120 are provided with screw holes on the side facing the barrel wall of the barrel 110. The barrel 110 is provided with a through hole corresponding to the position of the screw hole. And, a screw lock member 160 (such as a screw) is passed through the through hole to be screwed with the screw hole, and the sealing cover 120 is fixed to the barrel 110. The through hole and the screw hole can extend radially perpendicular to the axial direction of the sealing cavity 111.

[0037] Each of the cable fastening components 130 is sealed and fixed to a penetration opening of the sealing cover 120. In some embodiments, the fixing method of the cable fastening component 130 to the sealing cover 120 may include, for example, snap-fitting, screw locking, etc. For example, the cable fastening component 130 has a neck that is inserted into the penetration hole, and the neck has threads to threadably cooperate with the nut 180 to fix the cable fastening component 130 to the sealing cover 120. The cable fastening component 130 has a cable fastening opening, which can be used for the cable segments 200 that are disconnected from each other to be sealed and penetrated respectively. The cable transmitted in the compartment is disconnected at a suitable position of the cable (for example, a position close to the power equipment on the inner side of the compartment), so as to form the first cable end 201 and the second cable end of the two cable segments 200, and the first cable end 201 and the second cable end of the two cable segments 200 are respectively penetrated from the cable fastening opening of the cable fastening component 130 to the corresponding cable fastening component 130 and the sealing cover 120. Thus, when a pair of sealing covers 120 are fixed to the ports at both ends of the barrel 110, the first cable end 201 and the second cable end are inserted into the sealing cavity 111 and can be arranged relative to each other. 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 insertion opening of the sealing cover 120.

[0038] In some embodiments, the cable fastening assembly 130 can be implemented as a cable stuffing box. The cable stuffing box is a device that fills the gap around the cable to protect the cable, forms a waterproof environment, and supports and protects the cable. The cable stuffing box can play the role of introducing cables and fixing positions to achieve sealing and explosion-proof. It has the advantages of excellent explosion-proof performance, safe and reliable structure, simple and convenient installation, and high protection level. According to different uses, the cable stuffing box can be divided into welding type, riveting type, clamping type, tubular type and other forms, and can be made of carbon steel, brass, stainless steel or nylon and other materials.

[0039] In some embodiments, the cable fastening assembly 130 may include a pressure cylinder 131 and a pressure cap 132, one end of the pressure cylinder 131 is fixed to the insertion opening of the sealing cover 120, and the pressure cap 132 is fixed to the other end of the pressure cylinder 131. As an example, the pressure cylinder 131 and the pressure cap 132 are threadedly matched, and the cable segment 200 can be fixed by screwing the pressure cap 132 into the pressure cylinder 131. Furthermore, the pressure cylinder 131 forms a neck coupled to the insertion opening, and a hoop is matched with the neck passing through the insertion opening to fix the pressure cylinder 131 to the sealing cover 120. As an example, the pressure cylinder 131 and the hoop can be threadedly matched, for example, the neck is a threaded segment with external threads, and the hoop is a nut, etc. As an example, a sealing filler can be set in the gap between the pressure cap 132 and the pressure cylinder 131 and the inserted cable segment 200. As an example, a sealing filler can be set in the gap between the pressure cylinder 131 and the insertion opening of the sealing cover 120.

[0040] The first cable end 201 and the second cable end are configured to expose the contained core wires 203. Since the cable segments 200 to which the first cable end 201 and the second cable end belong are obtained by disconnecting the same cable, the core wires 203 of the first cable end 201 and the second cable end correspond one to one.

[0041] The insulating spacer 140 is detachably arranged in the sealed cavity 111. The insulating spacer 140 is equipped with a group of two-way connectors 150, each of which 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 perforations, and a two-way connector 150 may be fixedly inserted in each perforation. In some embodiments, the insulating spacer 140 is implemented as an insulating bakelite board, which has the advantages of no static electricity, wear resistance and high temperature resistance. In some embodiments, the two-way connector 150 is a two-way cold-pressed connector, which can be made by inserting the paired core wires 203 into the two interfaces of the two-way cold-pressed connector and pressing the cable and the connector together by pressure. Compared with traditional welding or bolt fixing, connecting the paired cable core wires 203 by cold-pressed connector is more convenient, safe, stable and corrosion-resistant, and has higher conductivity and longer service life.

[0042] In some optional embodiments, the bidirectional connector 150 is formed with a radiation shielding layer surrounding the connected paired core wires 203. For example, the radiation shielding layer may also be located on the outer wall of the bidirectional connector 150. In a further example, the radiation shielding layer may be implemented as an organosilicon-modified polymer, such as an organosilicon-modified epoxy resin, etc.; or may be implemented as a filler added with an anti-radiation metal oxide.

[0043] In some embodiments, the insulating spacer 140 is fixedly connected to the cylinder 110 or the sealing cover 120. For example, the insulating spacer 140 can be fixedly connected to at least one of the sealing covers 120 by a supporting and fixing mechanism to maintain a spacing. Figure 1 and Figure 2 As shown, the supporting and fixing mechanism has threaded portions at both ends, which are respectively fixedly connected to the insulating spacer 140 and the sealing cover 120 in a screw-locking manner. Specifically, the supporting and fixing mechanism includes a plurality of screws 170, which are arranged at intervals along the circumference of the insulating spacer 140. One end of the screw 170 is fixed to the sealing cover 120, and the other end is provided to penetrate the insulating spacer 140 and expose a threaded section, so as to be screwed on a nut to fix the insulating spacer 140 and the sealing cover 120. It should be noted that in other embodiments, the insulating spacer 140 may also be fixed to the inner wall of the cylinder 110 by, for example, a connection mechanism / bracket, etc., in combination with a snap-fit ​​or screw-locking method, or may be sequentially fixedly connected to the two sealing covers 120 covered on the cylinder 110 one by one, such as being fixed to one of the sealing covers 120 by a screw 170, and a snap-fitting snap-fitting snap-fitting structure (such as a snap-fitting piece and a snap-fitting hole, etc.) is pre-configured between the other sealing cover 120 and the insulating spacer 140. When the sealing cover 120 is covered on the cylinder 110, the snap-fitting structure is snapped (such as the snap-fitting piece is snapped into the snap-fitting hole), etc., so that the fixed position 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 to the illustrated example.

[0044] See also Figure 2 , Figure 2 A partial cross-sectional structural schematic diagram of the cable sealing device 100 in the embodiment of the present disclosure is shown when the sealed cable and the bidirectional connector are not installed.

[0045] exist Figure 2 In the example, optionally, the sealing cover 120 can be pre-fixed on the cylinder 110, and the sealing cover 120 can be removed by unscrewing the screw lock 160 from the screw hole of the sealing cover 120, so as to perform actions such as cable threading. Figure 2 In the example, optionally, the cable fastening assembly 130 can be pre-fixed on the sealing cover 120 to facilitate the cable routing. Figure 2In the example, optionally, the insulating spacer 140 can be fixed in the sealing cavity 111 in advance by the screws 170 of the supporting and fixing mechanism, and the insulating spacer 140 can be taken out of the sealing cavity 111 by loosening the nut 180 screwed on the screw 170. After the cable is threaded and the core wire 203 is docked, the sealing cover 120 and the insulating spacer 140 are restored to the original position installed on the cylinder 110. The structure of the integrated detachable cable sealing device 100 can reduce scattered parts, facilitate carrying and construction operations, and prevent parts from being lost.

[0046] Exemplarily, the support and fixing mechanism may include three screws 170 and corresponding three nuts, which are evenly arranged along the circumference of the insulating spacer 140. As an example, the bidirectional joints 150 on the insulating spacer 140 are evenly arranged in a central symmetrical pattern, for example, the through holes 141 are distributed in a hexagonal pattern.

[0047] In another exemplary manner, the other end of the screw rod 170 in the supporting and fixing mechanism may also be fixed to the sealing cover 120 by means of a nut 180 in cooperation with a threaded section penetrating the sealing cover 120 .

[0048] According to the above, by installing the insulating spacer 140 of the two-way connector 150, each pair of paired core wires 203 can be connected in the sealing cavity 111 to complete the reconnection of the disconnected cable and realize the sealing of the sealed cavity 111. By "disconnecting" the cable and then reconnecting and "sealing" the cable segment 200 in the sealing device, the cable sealing device 100 can be used to complete the good vertical sealing of the cable, only by making a convenient and small structural change to the cable, taking into account the sealing effect and the convenience of operation. In addition, according to the above embodiments, it can be known that by setting a sealing material or a shielding absorption material for shielding radiation (such as nuclear radiation) in the cable sealing device 100, radiation conduction can be effectively prevented.

[0049] like Figure 3 FIG. 2 is a flow chart showing a cable sealing method in an embodiment of the present disclosure. The cable sealing method can be applied to the cable sealing device 100 in any of the previous embodiments.

[0050] The cable sealing method comprises: Step S301: obtaining a pair of sealing covers 120 carrying the cable fastening assembly 130 separated from both ends of the cylinder 110 .

[0051] In some embodiments, the pair of sealing covers 120 are detached from the barrel 110 by unscrewing the screw locks 160 at both ends of the barrel 110. Furthermore, if the insulating spacer 140 is pre-fixed in the sealed cavity 111, the insulating spacer 140 can be removed from the sealed cavity 111 after the sealing cover 120 is removed. In some embodiments, the insulating spacer 140 can be removed from the screw 170 by unscrewing the nut 180.

[0052] It should be noted that, in other embodiments, the sealing cover 120 and / or the insulating spacer 140 may also be separated from the cylinder 110 in advance, and is not limited to the structure of the cable sealing device 100 that is pre-integrated into one.

[0053] Step S302: The disconnected cable segments 200 are respectively and tightly sealedly passed through the corresponding cable fastening openings on the sealing cover 120, so as to expose the core wires 203 of the first cable end 201 and the second cable end.

[0054] In some embodiments, the first cable end 201 and the second cable end of the two cable segments 200 disconnected from the cable are respectively passed through the corresponding sealing caps 120, and a sufficient length margin (for example, more than 10 mm) is left for passing through. Furthermore, a certain length of the insulation layer outside each core wire 203 of the first cable can be stripped to expose a sufficient length of each core wire 203 for docking.

[0055] Step S303: The paired core wires 203 between the first cable end 201 and the second cable end are fixedly connected through the bidirectional connectors 150 on the insulating spacer 140 .

[0056] In some embodiments, the paired core wires 203 are passed through each bidirectional connector 150 on the insulating spacer 140 and fixed one by one. As an example, when the bidirectional connector 150 is implemented as a bidirectional cold-pressed connector, the fixed electrical connection between the paired core wires 203 is completed by applying pressure to the bidirectional cold-pressed connector.

[0057] In some embodiments, the bidirectional connector 150 may not be pre-installed on the insulating spacer 140, but may be installed on the insulating spacer 140 when the insulating spacer 140 is removed for connecting the core wire 203. In this way, the bidirectional connector 150 can be selected for installation according to the actual requirements of core wire connection, and the construction is more flexible.

[0058] Step S304 : moving the insulating spacer 140 into the sealed cavity 111 .

[0059] In some embodiments, the insulating spacer 140 is pushed back and fixed to the screw 170 to be fixed to the sealing cover 120 .

[0060] Step S305 : fixing a pair of the sealing covers 120 to two ends of the cylinder 110 , and forming a seal between the cable fastening assembly 130 and the sealing covers 120 .

[0061] In some embodiments, the sealing cover 120 is installed back to the openings at both ends of the barrel 110, and the fixing of the screw lock 160 is restored. Optionally, the cable fastening assembly 130 can be sealed to complete the sealing of the sealing covers 120 at both ends.

[0062] Step S306 : placing the cylinder 110 horizontally with the injection hole 113 facing upward, and injecting the sealing material into the sealing cavity 111 through the injection hole 113 until the sealing material overflows from the exhaust hole 114 .

[0063] In some embodiments, the cylinder 110 is placed laterally, for example, horizontally, and the filling hole 113 is facing upward, and the air outlet holes located in the same axial direction are also facing upward, and sealing material (such as sealant, such as modified epoxy sealant) is poured to complete the sealing in the sealing cavity 111. The sealing material overflowing from the exhaust hole 114 indicates that the sealing cavity 111 is filled.

[0064] In some embodiments, after the sealing material is injected, the cable sealing operation can be completed by waiting for the sealant to solidify.

[0065] 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, wherein the device comprises a cylinder having a sealing cavity, a filling hole and an exhaust hole; a pair of sealing covers, the fixed covers are provided with openings at both ends and have a through-hole; a pair of cable fastening assemblies, having cable fastening holes through which the disconnected cable segments are respectively sealed, and are respectively fixedly combined with the through-holes of the pair of sealing covers in a sealing manner, so that the first cable end and the second cable end of the two cable segments can be inserted into the sealing cavity; wherein the first cable end and the second cable end are configured to expose the core wires contained therein; an insulating spacer, which 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. The device can realize good and convenient longitudinal sealing of the cable, and can also use sealing materials that are resistant to saturated steam pressure at high accident temperatures to maintain sealing reliability.

[0066] The positive effects achieved by this disclosure are: 1) Use cable docking technology to ensure safe and reliable cable connection; 2) Use cable sealing technology to ensure the sealing of the cable; 3) Cable radiation protection technology can be used to ensure that the cable has no radiation conduction; Based on the adoption of the above technologies, the electrical performance, sealing and radiation protection performance of the cable can be ensured.

[0067] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating 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 in the present disclosure shall still be covered by the protection scope of the present disclosure.

Claims

1. A cable sealing device, characterized in that: Used for sealing cables between the inside and outside of a ship; the device comprises: The cylinder comprises: a sealing cavity extending in the axial direction, openings at two opposite ends communicating with the sealing cavity, and a filling hole and an exhaust hole communicating with the sealing cavity; the filling hole is used to fill the sealing material into the sealing cavity; the filling hole and the exhaust hole are arranged at intervals in the axial direction; A pair of sealing covers, fixedly covering the two end openings and having penetration openings; A pair of cable fastening assemblies, having cable fastening openings through which the disconnected cable segments are respectively sealed and passed, and are respectively fixedly and sealingly coupled to the passing openings of the pair of sealing covers, so that the first cable ends and the second cable ends of the two cable segments are inserted into the sealed cavity; wherein the first cable ends and the second cable ends are configured to expose the core wires contained therein; The insulating spacer is detachably arranged in the sealing cavity and is equipped with a group of two-way connectors; each of the two-way connectors connects a pair of paired core wires between the first cable end and the second cable end.

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 by a supporting and fixing mechanism with a spacing maintained.

3. The cable sealing device according to claim 2, characterized in that: Threaded parts are formed at both ends of the supporting and fixing mechanism, and are respectively fixedly connected with the insulating spacer and the sealing cover in a screw-locking manner.

4. The cable sealing device according to claim 2, characterized in that: The supporting and fixing mechanism comprises a plurality of screws arranged at intervals along the circumference of the insulating spacer; one end of the screw is fixed to the sealing cover, and the other end is passed through the insulating spacer and exposes a threaded section for being screwed on a nut to fix the insulating spacer and the sealing cover.

5. The cable sealing device according to claim 1, characterized in that: The sealing cover is fixedly connected to the cylinder body through a screw locking mechanism; the screw locking mechanism comprises: A screw hole is provided on the side of the sealing cover facing the cylinder wall of the cylinder; A through hole is provided in the cylinder body and corresponds to the position of the screw hole; The screw lock member passes through the through hole to be screwed together with the screw hole.

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

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

8. The cable sealing device according to claim 1, characterized in that: The bidirectional joint is implemented as a bidirectional cold-pressed joint.

9. The cable sealing device according to claim 1, characterized in that: is implemented as at least one of the following: 1) The bidirectional connector is formed with a radiation shielding layer surrounding the connected paired core wires; 2) The sealing material is a material that is resistant to radiation transmitted by the cable and / or contains fillers that are resistant to radiation; 3) The sealing material is implemented as a sealant; or, the sealing material is implemented as a modified epoxy sealant.

10. A cable sealing method, characterized in that: Applied to the cable sealing device according to any one of claims 1 to 9, the method comprising: Obtaining a pair of sealing covers carrying the cable fastening assembly separated from both ends of the cylinder; The disconnected cable segments are respectively and tightly sealed through the cable fastening openings on the corresponding sealing covers, and the core wires of the first cable end and the second cable end are exposed; Each pair of core wires between the first cable end and the second cable end are fixedly connected through each bidirectional connector on the insulating spacer; Moving the insulating spacer into the sealed cavity; Fixing a pair of sealing covers to both ends of the cylinder body and forming a seal between the cable fastening assembly and the sealing covers; The cylinder is placed horizontally with the injection hole facing upward, and the sealing material is injected into the sealing cavity through the injection hole until the sealing material overflows from the exhaust hole.

Images