Cable penetrating device

Abstract

The utility model discloses a cable penetrating device. The cable penetrating device comprises a cable frame assembly, a plurality of cables, a sealing structure, a heat insulation structure and a plurality of thermocouples, the cable frame assembly comprises a frame and a fireproof filler filled in the frame, and the two ends of the frame in the axial direction are open so as to be provided with a fire facing end and a fire backing end; the plurality of cables are arranged in parallel and penetrate through the fireproof filler, and the two ends of the plurality of cables can be exposed from the frame; the sealing structure blocks the fire facing end and the fire backing end of the frame and is arranged on the outer side of the fireproof filler. The heat insulation structure is arranged on the peripheral side of the frame and close to the fire-back end of the frame, and the heat insulation structure comprises at least three heat insulation layers which are arranged in a stacked mode; the plurality of thermocouples are arranged at the back fire end of the frame and are respectively arranged corresponding to the sealing structure, the heat insulation structure and the plurality of cables. According to the technical scheme provided by the utility model, the fire resistance of the whole cable penetrating device is better, and the fire resistance requirement of a higher standard can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of cable auxiliary devices, in particular to a cable penetration device. Background Art

[0002] In the fire resistance test of the cabin, the traditional fire resistance level is basically A-60 (60 minutes of fire resistance integrity and thermal insulation), and with the improvement of the test standards, the current fire resistance level has reached H-120, which means that it can achieve 120 minutes of fire resistance integrity and thermal insulation. Moreover, the standard temperature rise curves of A-level fire resistance and H-level fire resistance in the test are different. The standard temperature rise curve of the A-level fire resistance test is to reach 600°C in the furnace for 5 minutes, and then the furnace temperature gradually reaches about 960°C before the end of 60 minutes (simulating ordinary flame combustion), and the standard temperature rise curve of the H-level fire resistance test is to reach 1100°C in the furnace for 5 minutes, and then the furnace temperature is maintained at about 1100°C until the end of 120 minutes (simulating hydrocarbon flame combustion). Due to the improvement of the fire protection level standard, the fire resistance performance of the cable penetration device has also been improved accordingly, so the structure of the cable penetration device itself also needs to be improved. Utility Model Content

[0003] In order to solve the above technical problems, the main purpose of the utility model is to provide a cable penetration device, aiming to improve the fire resistance performance of the cable penetration device so as to meet higher standards of fire resistance requirements.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cable penetration device, comprising:

[0005] A cable frame assembly comprises a frame and a fireproof filler filled in the frame, wherein the frame is open at both ends along its axial direction to have a fire-facing end and a fire-repellent end;

[0006] A plurality of cables are arranged in parallel and are all inserted into the fireproof filler, and both ends of the plurality of cables can be exposed from the frame;

[0007] A sealing structure, which is sealed at the fire-facing end and the fire-repellent end of the frame and is arranged outside the fireproof filler;

[0008] A heat insulation structure is arranged on the outer peripheral side of the frame and close to the back-fire end of the frame, and the heat insulation structure includes at least three heat insulation layers arranged in a stacked manner;

[0009] A plurality of thermocouples are arranged at the back-fire end of the frame and are respectively arranged corresponding to the sealing structure, the heat insulation structure and the plurality of cables.

[0010] Optionally, the thermal insulation structure includes a first thermal insulation belt arranged in contact with the frame, the first thermal insulation belt includes three first thermal insulation layers stacked in a radial direction of the frame, the thicknesses of the three first thermal insulation layers are set differently, and the thicknesses of the three first thermal insulation layers are all greater than or equal to 40 mm.

[0011] Optionally, the thermal insulation structure also includes a second thermal insulation belt arranged in contact with the first thermal insulation belt, the second thermal insulation belt includes three second thermal insulation layers stacked along the axial direction of the frame, the thickness of the three second thermal insulation layers are set differently, and the thickness of the three second thermal insulation layers are all greater than or equal to 40 mm.

[0012] Optionally, a transition wall extending along the axial direction of the frame is formed between the first insulation belt and the second insulation belt, and the multiple thermocouples include two first thermocouples, and the two first thermocouples are symmetrically arranged on both sides of the frame along its radial direction and are both fitted with the first insulation belt, wherein the distance H1 between each of the first thermocouples and the corresponding transition wall is 25 mm.

[0013] Optionally, the density of the material of each of the thermal insulation layers is 70 kg / m3.

[0014] Optionally, the plurality of thermocouples include two second thermocouples, and the two second thermocouples are respectively arranged in contact with the sealing structures at both ends of the frame, wherein the distance between the second thermocouple and the nearest cable is 25 mm.

[0015] Optionally, the multiple thermocouples include multiple third thermocouples, the multiple third thermocouples are arranged corresponding to the multiple cables, and the multiple third thermocouples are all located on the back-fire side of the frame, and the distance H2 between each third thermocouple and the sealing structure located at the back-fire end of the frame is 25 mm.

[0016] Optionally, the sizes of the plurality of cables are arranged differently, wherein at least one third thermocouple is arranged corresponding to the cables of the same size.

[0017] Optionally, the cross-sectional area of ​​the plurality of cables accounts for 30.77% of the cross-sectional area of ​​the entire cable frame assembly; and / or the wall thickness of the frame is 200 mm.

[0018] Optionally, the distance between each cable and the inner wall of the frame is greater than or equal to 6 mm; and / or the distance between two adjacent cables is greater than or equal to 3 mm.

[0019] The technical solution provided by the utility model has the following beneficial effects:

[0020] The cable penetration device provided by the utility model includes a cable frame assembly, a plurality of cables, a sealing structure, a heat-insulating structure and a plurality of thermocouples, wherein the cable frame assembly includes a frame, and a fireproof filler filled in the frame, and the plurality of cables are passed through the fireproof filler. The two ends of the fireproof filler can be sealed by the sealing structure, so that the fireproof performance is stronger and the water tightness and air tightness of the cable penetration device are better; heat insulation can be formed by the heat-insulating structure to better reduce the temperature of the back-fire side, and the temperature of various places on the back-fire side can be detected by the plurality of thermocouples, so as to better detect the temperature of various places on the back-fire side, so as to obtain the temperature value in real time and better understand various fire-resistant effects; and the heat-insulating structure includes at least three heat-insulating layers, so that the thickness of the heat-insulating structure is larger, so as to have a better heat-insulating effect. When the temperature on the fire side is higher, it can still effectively insulate, so that the fire-resistant performance of the entire cable penetration device is better and can better meet the fire-resistant requirements of higher standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a cable penetration device provided by the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the layout structure of the thermocouple described in.

[0024] Description of Figure Numbers:

[0025] 100-cable penetration device; 1-cable frame assembly; 11-frame; 12-fireproof filler; 2-cable; 3-sealing structure; 4-thermal insulation structure; 41-first thermal insulation layer; 42-second thermal insulation layer; 5-thermocouple; 51-first galvanic couple; 52-second galvanic couple; 53-third galvanic couple.

[0026] The realization of the purpose, functional characteristics and excellent effects of the utility model will be further explained below in conjunction with specific embodiments and drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The utility model provides a cable penetration device 100, specifically, please refer to Figure 1 In this embodiment, the cable penetration device 100 includes a cable frame assembly 1, a plurality of cables 2, a sealing structure 3, a heat-insulating structure 4 and a plurality of thermocouples 5. The cable frame assembly 1 includes a frame 11 and a fire-proof filler 12 filled in the frame 11. The frame 11 is open at both ends along its axial direction to have a fire-facing end and a fire-resistant end; the plurality of cables 2 are arranged in parallel and are all inserted into the fire-proof filler 12, and both ends of the plurality of cables 2 can be exposed from the frame 11; the sealing structure 3 is sealed at the fire-facing end and the fire-resistant end of the frame 11 and is arranged on the outside of the fire-proof filler 12; the heat-insulating structure 4 is arranged on the outer peripheral side of the frame 11 and is arranged close to the fire-resistant end of the frame 11, and the heat-insulating structure 4 includes at least three heat-insulating layers arranged in a stacked manner; the plurality of thermocouples 5 are arranged at the fire-resistant end of the frame 11 and are respectively arranged corresponding to the sealing structure 3, the heat-insulating structure 4 and the plurality of cables 2.

[0031] In this embodiment, the sealing structure 3 can be used to seal both ends of the fireproof filler 12 so that the fireproof filler 12 will not be exposed. The fireproof performance is stronger and the water tightness and air tightness of the cable penetration device 100 are better. The thermal insulation structure 4 can form thermal insulation to better reduce the temperature on the back-to-fire side. The temperature of each part of the back-to-fire side can be detected by multiple thermocouples 5, so as to better detect the temperature of each part of the back-to-fire side, so as to obtain the temperature value in real time and better understand various fire-resistant effects. Moreover, the thermal insulation structure 4 includes at least three thermal insulation layers, so that the thickness of the thermal insulation structure 4 is larger, so that the thermal insulation effect is better. When the temperature on the fire side is higher, it can still effectively insulate, so that the fire resistance of the entire cable penetration device 100 is better and can better meet higher standards of fire resistance requirements.

[0032] The frame 11 is annular, and preferably a square annular frame. The front and rear sides of the frame 11 are set to be open, so as to facilitate the placement of the fireproof filler 12. The fire-facing end is located at the front end of the frame 11, and the fire-resistant end is located at the rear end of the frame 11. The front and rear directions of the frame 11 are the axial directions of the frame 11, and the direction from the center of the frame 11 to the peripheral side wall of the frame 11 is the radial direction. Accordingly, the description of the orientation in the present invention shall be referred to as such unless otherwise specified.

[0033] In one embodiment, the thermal insulation structure 4 includes a first thermal insulation belt arranged in contact with the frame 11, and the first thermal insulation belt includes three first thermal insulation layers 41 arranged in a stacked manner along the radial direction of the frame 11, and the thicknesses of the three first thermal insulation layers 41 are set differently, and the thicknesses of the three first thermal insulation layers 41 are all greater than or equal to 40 mm. Preferably, the thickness of the first thermal insulation layer 41 arranged in contact with the frame 11 is 50 mm, and the thicknesses of the other two first thermal insulation layers 41 are 40 mm, so that the total thickness of the first thermal insulation belt is 130 mm, the thickness of the thermal insulation layer is thicker, and the thermal insulation effect is better.

[0034] Furthermore, the thermal insulation structure 4 also includes a second thermal insulation belt arranged in contact with the first thermal insulation belt, and the second thermal insulation belt includes three second thermal insulation layers 42 stacked in the axial direction of the frame 11, and the thicknesses of the three second thermal insulation layers 42 are set differently, and the thicknesses of the three second thermal insulation layers 42 are all greater than or equal to 40 mm. Preferably, in the direction from front to back along the frame 11, the thickness of the second thermal insulation layer 42 at the front end is 50 mm, and the thicknesses of the other two second thermal insulation layers 42 are 40 mm, so that the total thickness of the second thermal insulation belt is 130 mm, so that the thermal insulation effect in the radial and axial directions along the frame 11 is better, so that the thermal insulation effect of the entire cable penetration device 100 is better, that is, the fire resistance is better.

[0035] A transition wall extending along the axial direction of the frame 11 is formed between the first insulation belt and the second insulation belt, and the plurality of thermocouples 5 include two first thermocouples 51, which are symmetrically arranged on both sides of the frame 11 along its radial direction and are both arranged in contact with the first insulation belt and close to the second insulation belt. Figure 1 As shown in , the distance H1 between each first galvanic couple 51 and the corresponding transition wall is 25 mm. The temperature at the thermal insulation structure 4 can be better measured through the first galvanic couple 51, so that it can be known in real time whether the temperature at the thermal insulation structure 4 exceeds the preset temperature value, so that the thermal insulation effect of the cable penetration device 100 can be known, and the real-time monitoring performance is better.

[0036] Preferably, the density of the material of each of the thermal insulation layers is 70kg / m3, and each of the thermal insulation layers is made of non-combustible material to ensure better thermal insulation and lighter weight.

[0037] Preferably, the fireproof filler 12 is a SG-T expansion fireproof sleeve and a SG-D expansion fireproof belt with a length of 160 mm, which has a stronger fireproof performance and can facilitate the cable 2 to pass through it.

[0038] Preferably, the sealing structure 3 is a 20 mm thick SG-M intumescent fireproof sealant, which has stronger fireproof performance and makes the entire device have excellent watertightness and airtightness to meet the requirements of watertightness and airtightness of some fire-resistant partitions in ships and marine engineering. The watertightness reaches 0.45Mpa and the airtightness reaches 0.35Mpa.

[0039] The frame 11 is made of 5 mm thick steel plates welded together, which has good strength and fire resistance. Preferably, the wall thickness of the frame 11 is 200 mm, which has better strength and fire resistance.

[0040] Moreover, the multiple thermocouples 5 include two second thermocouples 52, and the two second thermocouples 52 are respectively arranged in contact with the sealing structure 3 located at both ends of the frame 11, wherein the distance between the second thermocouple 52 and the nearest cable 2 is 25 mm, so as to better detect the temperature value corresponding to each location of the sealing structure 3, thereby obtaining the temperature difference between the front and rear ends of the frame 11, so as to better understand the fire resistance of the cable penetration device 100.

[0041] Furthermore, if Figure 1As shown in the figure, the multiple thermocouples 5 also include multiple third thermocouples 53, and the multiple third thermocouples 53 are arranged corresponding to the multiple cables 2, and the multiple third thermocouples 53 are all located on the back-fire side of the frame 11, and the distance H2 between each third thermocouple 53 and the sealing structure 3 located at the back-fire end of the frame 11 is 25 mm. The temperature values ​​corresponding to each cable 2 are obtained respectively through the multiple third thermocouples 53.

[0042] It is understandable that not every cable 2 needs to be provided with a thermocouple 5. Preferably, a plurality of cables 2 of the same type may be provided with a corresponding thermocouple 5. The sizes of the plurality of cables 2 are set differently, wherein at least one third thermocouple 53 is provided correspondingly to the cables 2 of the same size. The temperature value of the cables 2 of the same type can be obtained through the third thermocouple 53. Different types of heating are different. Therefore, only the cables 2 of the same type need to be tested to obtain the heat resistance of the cables 2 of this type, so that the number of thermocouples 5 provided is reduced, the cost is saved, and the test results are more reliable.

[0043] Preferably, the cross-sectional area of ​​the plurality of cables 2 accounts for 30.77% of the cross-sectional area of ​​the entire cable frame assembly 1. Avoid the cables 2 being laid out too densely or too sparsely, which may affect the fire resistance of the cable 2 penetrating the structure. For example, the specification of the frame 11 is L800mm long × 400mm wide × 200mm high (or the same cross-sectional area of ​​320000mm2), and the total cross-sectional area of ​​the cables 2 is 98457.67mm2. Therefore, the cross-sectional area S2 of the cables 2 accounts for the cross-sectional area S1 of the entire cable frame assembly 1. The percentage is S2 / S1=30.77%, so as to ensure the best laying effect.

[0044] Moreover, the distance between each cable 2 and the inner wall of the frame 11 is greater than or equal to 6 mm, so as to avoid the cable 2 being too close to the frame 11, causing the temperature of the cable 2 to be too high, or to avoid the cable 2 being too far away from the frame 11, thereby wasting space.

[0045] Furthermore, the distance between two adjacent cables 2 is greater than or equal to 3 mm to prevent the cables 2 from being arranged too densely and affecting each other.

[0046] Specifically, Figure 2As shown in the figure, 1 to 10 represent ten different types of cables 2, 1# to 14# represent thermocouples 5, among which 1# and 2# represent two first thermocouples 51, 3# and 4# represent two second thermocouples 52, and 5# to 14# represent the position of the third thermocouple 53, so that the thermal insulation structure 4, the sealing structure 3 and various types of cables 2 are all equipped with thermocouples 5 for measurement, the layout is more reasonable and the detection is more accurate.

[0047] When the cable penetration device 100 provided by the utility model is subjected to a fire resistance test, the sample is subjected to a standard fire resistance test simulating a hydrocarbon gas fire for 120 minutes, and no smoke or flame penetrates; at the end of 120 minutes, the average temperature of the back-fire surface of the cable penetration device 100 does not increase by more than 140°C compared with the initial temperature, and the temperature of any point on the back-fire surface of the sample does not increase by more than 180°C compared with the initial temperature. Therefore, it is an "H-120" class bulkhead cable penetration device that meets the requirements.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A cable penetration device, characterized in that: include: A cable frame assembly comprises a frame and a fireproof filler filled in the frame, wherein the frame is open at both ends along its axial direction to have a fire-facing end and a fire-repellent end; A plurality of cables are arranged in parallel and are all inserted into the fireproof filler, and both ends of the plurality of cables can be exposed from the frame; A sealing structure, which is sealed at the fire-facing end and the fire-repellent end of the frame and is arranged on the outside of the fireproof filler; A heat insulation structure is arranged on the outer peripheral side of the frame and close to the back-fire end of the frame, and the heat insulation structure includes at least three heat insulation layers arranged in a stacked manner; A plurality of thermocouples are arranged at the back-fire end of the frame and are respectively arranged corresponding to the sealing structure, the heat insulation structure and the plurality of cables.

2. The cable penetration device according to claim 1, characterized in that: The thermal insulation structure includes a first thermal insulation belt arranged in contact with the frame, and the first thermal insulation belt includes three first thermal insulation layers stacked in a radial direction of the frame. The thicknesses of the three first thermal insulation layers are set differently, and the thicknesses of the three first thermal insulation layers are all greater than or equal to 40 mm.

3. The cable penetration device according to claim 2, characterized in that: The thermal insulation structure also includes a second thermal insulation belt arranged in contact with the first thermal insulation belt, and the second thermal insulation belt includes three second thermal insulation layers stacked in an axial direction of the frame, the thickness of the three second thermal insulation layers are set differently, and the thickness of the three second thermal insulation layers is greater than or equal to 40 mm.

4. The cable penetration device according to claim 3, characterized in that: A transition wall extending along the axial direction of the frame is formed between the first insulation belt and the second insulation belt, and the multiple thermocouples include two first thermocouples, which are symmetrically arranged on both sides of the frame along the radial direction and are both fitted with the first insulation belt, wherein the distance H1 between each of the first thermocouples and the corresponding transition wall is 25 mm.

5. The cable penetration device according to claim 1, characterized in that: The density of the material of each of the thermal insulation layers is 70 kg / m3.

6. The cable penetration device according to claim 1, characterized in that: The multiple thermocouples include two second thermocouples, and the two second thermocouples are respectively arranged in contact with the sealing structures located at both ends of the frame, wherein the distance between the second thermocouple and the nearest cable is 25 mm.

7. The cable penetration device according to claim 1, characterized in that: The multiple thermocouples include multiple third thermocouples, the multiple third thermocouples are arranged corresponding to the multiple cables, and the multiple third thermocouples are all located on the back-fire side of the frame, and the distance H2 between each third thermocouple and the sealing structure located at the back-fire end of the frame is 25 mm.

8. The cable penetration device according to claim 7, characterized in that: The sizes of the plurality of cables are arranged differently, wherein at least one third electric couple is arranged correspondingly at the cables of the same size.

9. The cable penetration device according to claim 1, characterized in that: The percentage of the cross-sectional area of ​​the plurality of cables to the cross-sectional area of ​​the entire cable frame assembly is 30.77%; and / or the wall thickness of the frame is 200 mm.

10. The cable penetration device according to claim 1, characterized in that: The distance between each cable and the inner wall of the frame is greater than or equal to 6 mm; and / or the distance between two adjacent cables is greater than or equal to 3 mm.

Images