Cable joint protection device

Abstract

The invention relates to a cable joint protection device. The cable joint protection device comprises a frame; the anti-impact protection plate is mounted in the frame, and a through cavity with two through ends is defined by the anti-impact protection plate. According to the invention, high-temperature impact on surrounding cables can be reduced, and effective heat dissipation of the cable joint is realized.

Description

Technical Field

[0001] The present application relates to the technical field of cable equipment, and in particular to a cable joint protection device. Background Art

[0002] The intermediate joint is a cable accessory used for the intermediate connection of the cable. Its main function is to make the line unobstructed and ensure the insulation level at the cable joint. In the current high-voltage power transmission process, the intermediate joint of the high-voltage cable is in an open state. However, since the intermediate joint of the high-voltage cable is squeezed in a small space with other cables, once the intermediate joint explodes or burns for some reason, the high temperature or shock wave of the explosion can easily damage the surrounding cables. Summary of the invention

[0003] Based on this, the present application provides a cable joint protection device for reducing high temperature impact on surrounding cables and achieving effective heat dissipation of cable joints.

[0004] The present application provides a cable joint protection device, comprising:

[0005] frame;

[0006] The impact-resistant guard plate is installed in the frame and encloses a through cavity with two ends passing through.

[0007] In one embodiment, the cable connector protection device further comprises:

[0008] The fireproof functional layer is arranged on the inner side of the impact-resistant protective plate; the fireproof functional layer includes a first flame-retardant layer.

[0009] In one embodiment, the fire protection functional layer further comprises:

[0010] A second flame retardant layer is stacked with the first flame retardant layer, and the second flame retardant layer is located between the impact-resistant guard plate and the first flame retardant layer.

[0011] In one embodiment, the fire protection functional layer further comprises:

[0012] A third flame retardant layer is stacked with the first flame retardant layer and the second flame retardant layer, and the third flame retardant layer is located between the impact-resistant protective plate and the second flame retardant layer; and air holes are opened on the surface of the third flame retardant layer.

[0013] In one embodiment, the fire protection functional layer further comprises:

[0014] A plurality of medium cavities are located between the first flame retardant layer and the second flame retardant layer. The medium cavities are fixed to the surface of the first flame retardant layer facing the second flame retardant layer, and the medium cavities are filled with fire extinguishing medium.

[0015] In one embodiment, a spike structure is disposed on a side of the medium cavity facing away from the first flame retardant layer, one end of the spike structure is fixed to a side of the second flame retardant layer facing the medium cavity, and the other end faces the medium cavity.

[0016] In one of the embodiments, a plurality of through holes are formed on the impact-resistant guard plate.

[0017] In one embodiment, the frame includes a first frame, a second frame, a third frame and a fourth frame which are spliced ​​to each other, the first frame is arranged opposite to the third frame, and the second frame is arranged opposite to the fourth frame;

[0018] The impact-resistant shield is installed at least in the second frame, the third frame and the fourth frame, and the impact-resistant shield installed in the second frame is also used to carry the cable joint.

[0019] In one embodiment, the frame further includes a fifth frame and a sixth frame, and the impact-resistant guard plate is further installed in the fifth frame and the sixth frame;

[0020] Guiding structures are installed at two opposite ends of the inner side of the first frame, and the fifth frame and the sixth frame are slidably installed on the guiding structures.

[0021] In one of the embodiments, the cable joint protection device further includes a limiting member, which is installed at one end of the second frame and / or the fourth frame close to the guide structure.

[0022] The cable joint protection device, through the cooperation of the frame and the anti-impact guard plate, can guide the shock wave to rush out along the two ends of the through cavity when the cable joint explodes, relieve the huge pressure generated at the moment of the explosion, reduce the impact on the surrounding cables, and reduce the damage to the surrounding cables. At the same time, the external cold air can enter the cable joint protection device from the two ends of the through cavity, form natural convection with the hot air generated by the cable joint, induce the chimney effect, realize the effective heat dissipation of the cable joint, and further improve the safety of the cable joint during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of the structure of a cable connector protection device provided in an embodiment of the present application.

[0024] FIG. 2 is an exploded view of a cable joint protection device provided in an embodiment of the present application.

[0025] FIG3 is another schematic diagram of the structure of the cable joint protection device provided in an embodiment of the present application.

[0026] FIG. 4 is another exploded view of the cable joint protection device provided in an embodiment of the present application.

[0027] FIG5 is a schematic diagram of the structure of the fireproof functional layer in the cable joint protection device provided in an embodiment of the present application.

[0028] FIG. 6 is a side view of a cable connector protection device according to an embodiment of the present application.

[0029] FIG. 7 is a schematic diagram of the structure of a limiter in a cable connector protection device according to an embodiment of the present application.

[0030] Reference numerals

[0031] 10- impact-resistant guard plate; 101- through hole; 20- fire-proof functional layer; 21- first flame-retardant layer; 22- second flame-retardant layer; 23- third flame-retardant layer; 231- air vent; 24- medium cavity; 25- spike structure; 26- adhesive layer; 31- first frame; 32- second frame; 33- third frame; 34- fourth frame; 35- fifth frame; 36- sixth frame; 311- guide structure; 40- bolt; 50- handle; 60- limiter; 61- positioning plate; 62- sleeve; 63- L-shaped positioning pin; 70- blocking block. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, if the terms "first" or "second" appear, these terms 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 description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0038] At present, in the process of high-voltage power transmission, the middle joint of the high-voltage cable is in an open state and is crowded in a small space with other cables, so that the middle joint of the high-voltage cable and the high-voltage cable can be used normally; however, since the middle joint of the high-voltage cable is crowded in a small space with other cables, in a conventional explosion, the shock wave of the explosion spreads in all directions. In tunnels, underground, ditches and other scenes, the high-voltage cables are very crowded. Once the middle joint explodes, the shock wave of the explosion can easily damage the surrounding cables, and when the middle joint catches fire for some reason, the flames will spread and erupt in all directions, and the high temperature of the combustion will also be transmitted to the surrounding area, thereby causing damage to the surrounding cables and making it inconvenient to use.

[0039] Based on this, an embodiment of the present application provides a cable joint protection device for reducing high temperature impact on surrounding cables and enhancing effective heat dissipation of cable joints.

[0040] The following is a detailed description with reference to the accompanying drawings and specific embodiments.

[0041] FIG. 1 is a schematic diagram of a structure of a cable joint protection device provided in an embodiment of the present application. FIG. 2 is an exploded view of a cable joint protection device provided in an embodiment of the present application. FIG. 3 is another schematic diagram of a structure of a cable joint protection device provided in an embodiment of the present application. FIG. 4 is another exploded view of a cable joint protection device provided in an embodiment of the present application.

[0042] As shown in FIG. 1 to FIG. 4 , an embodiment of the present application provides a cable joint protection device, including: a frame; an impact-resistant protective plate 10 , wherein the impact-resistant protective plate 10 is installed in the frame and encloses a through cavity with both ends passing through.

[0043] During specific implementation, a single group of cables is passed through the cable joint protection device so that the cable joint (not shown in the figure) is located in the through cavity surrounded by the impact-resistant protective plate 10, thereby protecting the cable joint.

[0044] Through the composition structure and specific implementation process of the above-mentioned cable joint protection device, it can be known that, as shown in Figures 1 to 4, the cable joint protection device provided in the embodiment of the present application includes a frame and an anti-impact guard plate installed in the frame, and the anti-impact guard plate is enclosed to form a through cavity with two ends through, and the cable joint can be placed in the through cavity. Based on this, when the cable joint explodes, by utilizing the principle of energy gathering effect, through the cooperation of the frame and the anti-impact guard plate, the shock wave generated by the explosion of the cable joint can be guided to rush out along the two ends of the through cavity surrounded by the anti-impact guard plate 10, and the huge pressure generated at the moment of the explosion can be relieved, which can reduce the impact on the surrounding cables and reduce the damage to the surrounding cables; when the cable joint catches fire or explodes for some reason, the cable joint protection device can also reduce the high temperature impact on the surrounding cables, further reducing the damage to the surrounding cables. At the same time, the cable joint protection device provided in the embodiment of the present application is an open protection device, and the external cold air can enter the cable joint protection device from both ends of the through cavity, forming natural convection with the hot air generated by the cable joint, causing a chimney effect, so that the heat generated by the cable joint during operation can be quickly discharged, achieving effective heat dissipation of the cable joint, reducing the occurrence of explosions and combustion caused by excessive hot air pressure due to overheating of the cable joint, and further improving the safety of the cable joint during operation. In addition, the cable joint protection device provided in the embodiment of the present application has a high structural strength, which improves the durability of the cable joint protection device and can further protect the cable joint; and the cable joint protection device provided in the embodiment of the present application can block the entry of water vapor in the air to avoid affecting the normal operation of the cable joint, and at the same time can avoid the occurrence of short circuit and burning of the cable joint when it encounters water.

[0045] Among them, peripheral cables refer to cables that are not directly connected to both ends of the cable connector and are located around the cable connector.

[0046] In some examples, as shown in FIGS. 1 to 4 , a plurality of through holes 101 are provided on the anti-impact guard plate 10, which can reduce the weight of the entire cable joint protection device while ensuring the protective effect of the anti-impact guard plate 10 on the cable joint, thereby reducing the production cost and making the cable joint protection device more convenient to use.

[0047] For example, the embodiment of the present application does not limit the shape, number and arrangement of the through holes 101, and can be adjusted according to actual conditions; for example, as shown in Figures 1 to 4, the impact-resistant guard plate 10 can be evenly provided with multiple circular through holes 101, etc. This is only an example and is not specifically limited.

[0048] Exemplarily, the impact-resistant guard plate 10 may be a plate having a certain hardness and impact resistance. For example, the material of the impact-resistant guard plate 10 may include one or more of stainless steel, carbon steel, aluminum alloy, etc. This is only an example and is not specifically limited.

[0049] For example, the impact plate 10 may be welded within the frame.

[0050] As a possible implementation, as shown in Figures 1 to 4, the cable joint protection device further includes: a fireproof functional layer 20, which is arranged on the inner side of the anti-impact protective plate 10. The inner side of the anti-impact protective plate 10 refers to the side of the anti-impact protective plate 10 facing the cable joint when a cable joint is placed in the cable joint protection device.

[0051] Based on this, when the cable joint catches fire or explodes for some reason, the fireproof functional layer 20 can control the high temperature and open flame generated by the burning of the cable joint within a specified range, that is, the inside of the cable joint protection device, blocking the flame from spreading and erupting in all directions, so that the high temperature generated by the burning of the cable joint will not be transmitted to the surrounding cables, and the surrounding cables are isolated from the high temperature of the burning of the cable joint, effectively controlling the range of flame burning and high temperature radiation, further reducing the high temperature impact on the surrounding cables, and further reducing the damage to the surrounding cables, preventing the surrounding cables from being burned, which is conducive to reducing maintenance costs.

[0052] FIG5 is a schematic diagram of the structure of the fireproof functional layer in the cable joint protection device provided in an embodiment of the present application.

[0053] In some examples, as shown in Fig. 5, the fireproof functional layer 20 includes a first flame retardant layer 21. The first flame retardant layer 21 has good flame retardancy, and when the cable joint catches fire or explodes for some reason, it can effectively slow down the spread of the flame and reduce the damage of the fire to the surrounding cables.

[0054] Exemplarily, the material of the first flame retardant layer 21 may include one or more of metal, asbestos, polymer materials, etc. The polymer materials may include rubber, etc., which are only given as examples and are not specifically limited.

[0055] For example, the material of the first flame retardant layer 21 can be a polymer material with good flame retardancy, which can ensure good fire prevention effect without causing harm to the environment or operators. At the same time, the polymer material also has the advantages of light weight and low price.

[0056] For example, as shown in Figures 1 and 2, the fireproof functional layer 20 may only include the first flame retardant layer 21. In this case, the first flame retardant layer 21 may be a solid rubber sheet, which not only has good flame retardancy, but also has a certain buffering effect, which can further reduce the impact of the cable joint explosion on the surrounding cables.

[0057] In some examples, as shown in FIGS. 3 to 5 , the fireproof functional layer 20 further includes: a second flame retardant layer 22 stacked with the first flame retardant layer 21, and the second flame retardant layer 22 is located between the impact-resistant protective plate 10 and the first flame retardant layer 21. The second flame retardant layer 22 also has good flame retardancy, so that when the cable joint catches fire or explodes for some reason, it can further slow down the spread of the flame and further reduce the damage of the fire to the surrounding cables.

[0058] Exemplarily, the second flame retardant layer 22 may also have good air permeability, thereby strengthening the chimney effect formed in the cable joint protective device. The chimney effect is a natural convection phenomenon of air or gas caused by temperature differences. Inside the cable joint protective device, especially when the cable joint is under high load or the ambient temperature changes greatly, hot air or gas will rise due to its low density. Since the cable joint protective device is an open protective device and the second flame retardant layer 22 has good air permeability, external cold air will enter the cable joint protective device and flow to the bottom of the cable joint, forming a natural convection cycle, thereby forming a temperature difference between the inside and outside of the cable joint protective device, triggering the chimney effect, and accelerating the flow rate of the hot air flow in the cable joint protective device, which can further effectively dissipate the heat of the cable joint and the cables connected to it.

[0059] For example, the material of the second flame retardant layer 22 may be adjusted so that the buffering capacity of the second flame retardant layer 22 is better, thereby further reducing the impact on surrounding cables when the cable joint explodes.

[0060] Exemplarily, the material of the second flame retardant layer 22 may include one or more of metal, asbestos, polymer materials, etc. The polymer materials may include rubber, etc., which are only given as examples and are not specifically limited.

[0061] Exemplarily, when the fire-proof functional layer 20 also includes a second flame-retardant layer 22, the first flame-retardant layer 21 also has good air permeability, further enhancing the effective heat dissipation of the cable joints; at the same time, the through holes 101 opened on the impact-resistant protective plate 10, in addition to having a weight-reducing effect, can also allow external cold air to enter the cable joint protection device, forming natural convection with the hot air, quickly and effectively dissipating heat from the cable joints, and achieving further heat dissipation and cooling of the cable joints.

[0062] In some examples, as shown in Figures 3 to 5, the fire-proof functional layer 20 further includes: a third flame-retardant layer 23 stacked with the first flame-retardant layer 21 and the second flame-retardant layer 22, and the third flame-retardant layer 23 is located between the impact-resistant protective plate 10 and the second flame-retardant layer 22. The third flame-retardant layer 23 also has good flame retardancy, so when the cable joint catches fire or explodes for some reason, it can further slow down the spread of the flame and further reduce the damage of the fire to the surrounding cables.

[0063] Exemplarily, as shown in FIG. 3 to FIG. 5 , the surface of the third flame retardant layer 23 is provided with air holes 231 , which can further enhance the effective heat dissipation of the cable connector.

[0064] For example, the embodiment of the present application does not limit the shape, number and arrangement of the air holes 231, and they can be adjusted according to actual conditions.

[0065] Exemplarily, the air holes 231 may be formed by uniformly weaving on the surface of the third flame retardant layer 23 .

[0066] Exemplarily, the material of the third flame retardant layer 23 may include one or more of metal, asbestos, polymer materials, etc. The polymer materials may include rubber, etc., which are only given as examples and are not specifically limited.

[0067] In some examples, as shown in FIG. 5 , the fire-proof functional layer 20 further includes: a plurality of medium cavities 24 located between the first flame-retardant layer 21 and the second flame-retardant layer 22 , the medium cavities 24 being fixed to the surface of the first flame-retardant layer 21 facing the second flame-retardant layer 22 , and the medium cavities 24 being filled with a fire-extinguishing medium.

[0068] Based on this, when the cable joint explodes or catches fire for some reason, a large outward pressure will be generated inside the cable joint to squeeze the medium cavity 24. The medium cavity 24 will rupture after being squeezed, causing the fire extinguishing medium filled therein to spray out, extinguishing the burning part of the cable joint, reducing the heat of the shock wave, and at the same time preventing the fire from spreading and burning and damaging other cables around it.

[0069] Exemplarily, the fire extinguishing medium filled in the medium cavity 24 may include one or more of insulating liquid or gas, which is only used as an example and is not specifically limited.

[0070] Furthermore, the fire extinguishing medium filled in the medium cavity 24 may be a gas, which can extinguish fires in all directions and has better fire extinguishing capability. For example, the medium cavity 24 may be filled with one or more of perfluorohexanone, heptafluoropropane, carbon dioxide, etc., which are only examples and are not specifically limited.

[0071] Exemplarily, when the fire-proof functional layer 20 also includes a medium cavity 24, the first flame-retardant layer 21 may include a perforated plate or a structure similar to a gauze mesh, which not only allows the fire-extinguishing medium filled in the medium cavity 24 to leak out and effectively extinguish the cable joint, but also facilitates the fixing of the medium cavity 24 so that the medium cavities 24 will not be stacked on each other.

[0072] In some examples, as shown in FIG. 5 , a spike structure 25 is disposed on one side of the medium cavity 24 facing away from the first flame retardant layer 21 , one end of the spike structure 25 is fixed to the side of the second flame retardant layer 22 facing the medium cavity 24 , and the other end faces the medium cavity 24 .

[0073] Based on this, when the cable joint is operating normally, there is a certain distance between one end of the spike structure 25 facing the medium cavity 24 and the side of the medium cavity 24 away from the first flame retardant layer 21, or it is pressed against the side of the medium cavity 24 away from the first flame retardant layer 21; when the cable joint explodes or catches fire for some reason, a large outward pressure will be generated inside the cable joint, so that the spike structure 25 pierces the medium cavity 24 under the action of the outward force, so that the fire extinguishing medium filled therein can be sprayed out, and the burning part of the cable joint can be extinguished in time, further reducing the heat of the shock wave, and at the same time preventing the fire from spreading and burning and damaging other cables around.

[0074] Exemplarily, as shown in FIG. 5 , at least one spike structure 25 is correspondingly provided on a side of each medium cavity 24 facing away from the first flame retardant layer 21 , and the end of the spike structure 25 facing the medium cavity 24 is a sharp end.

[0075] Exemplarily, the fire-proof functional layer 20 further includes an adhesive layer 26 located between the medium cavity 24 and the first flame-retardant layer 21 .

[0076] As a possible implementation, as shown in Figures 1 to 4, the frame includes a first frame 31, a second frame 32, a third frame 33 and a fourth frame 34 that are spliced ​​with each other, the first frame 31 and the third frame 33 are arranged opposite to each other, and the second frame 32 and the fourth frame 34 are arranged opposite to each other; the impact-resistant guard plate 10 is installed at least in the second frame 32, the third frame 33 and the fourth frame 34, and the impact-resistant guard plate 10 installed in the second frame 32 is also used to carry cable joints.

[0077] Based on this, when a cable joint is placed in the cable joint protection device, as shown in Figures 1 to 4, the second frame 32 is located below the cable joint; the first frame 31 is arranged on the front side of the top of the second frame 32, the third frame 33 is arranged on the rear side of the top, and the fourth frame 34 is arranged on the top of the first frame 31 and the third frame 33, and at least the second frame 32, the third frame 33 and the fourth frame 34 are installed with an anti-impact guard plate 10. Through the cooperation of the first frame 31, the second frame 32, the third frame 33, the fourth frame 34 and the anti-impact guard plate 10, the shock wave generated when the cable joint explodes can rush out from the position where the anti-impact guard plate 10 is not installed in the cable joint protection device, and the pressure during the explosion can be relieved to prevent the surrounding cables from being damaged by the explosion; at the same time, this open protection device can also effectively dissipate heat when the cable joint is operating normally. In addition, the cable joint protection device provided in the embodiment of the present application has a spliced ​​frame, which improves the structural strength of the cable joint protection device, and there is no need to worry that the cable joint protection device will be deformed and damaged after being stepped on by the operator.

[0078] In specific implementation, the second frame 32 at the bottom of the cable connector can be placed first, the third frame 33 can be installed on the second frame 32, the first frame 31 can be installed on the second frame 32, and finally the fourth frame 34 can be installed on the first frame 31 and the third frame 33.

[0079] In some examples, as shown in FIGS. 1 to 4 , screw holes are provided on the first frame 31 , the second frame 32 , the third frame 33 and the fourth frame 34 , and the first frame 31 , the second frame 32 , the third frame 33 and the fourth frame 34 can be spliced ​​together by bolts 40 .

[0080] Further, as shown in FIGS. 1 to 4 , a bolt 40 is connected to a screw hole opened on one side of the first frame 31 close to the fourth frame 34, and the top of the bolt 40 passes through the fourth frame 34. After a nut is screwed into the surface of the bolt 40 connecting the first frame 31 and the fourth frame 34, the first frame 31 and the fourth frame 34 can be fixed; a bolt 40 is also connected to a screw hole opened on one side of the first frame 31 close to the second frame 32, and the bottom of the bolt 40 passes through the second frame 32. After a nut is screwed into the surface of the bolt 40 connecting the first frame 31 and the second frame 32, the first frame 31 and the second frame 32 can be fixed. The third frame 33 is fixed with the frame 32; a bolt 40 is connected to a screw hole opened on a side of the third frame 33 close to the second frame 32, and the bottom of the bolt 40 passes through the second frame 32. After a nut is screwed into the surface of the bolt 40 connecting the third frame 33 and the second frame 32, the second frame 32 and the third frame 33 can be fixed; a bolt 40 is connected to a screw hole opened on a side of the third frame 33 close to the third frame 33, and one side of the bolt 40 passes through the third frame 33. After a nut is screwed into the surface of the bolt 40 connecting the third frame 33 and the fourth frame 34, the third frame 33 and the fourth frame 34 can be fixed.

[0081] Exemplarily, the material of the frame may include one or more of stainless steel, carbon steel, aluminum alloy, etc., which are merely examples and not specifically limited.

[0082] In some examples, since the impact-resistant guard plate 10 installed in the second frame 32 is also used to carry cable joints, when the cable protection device also includes a fire-resistant functional layer 20, and the fire-resistant functional layer 20 also includes a medium cavity 24, a support frame (not shown in the figure) for carrying cable joints can be provided on the impact-resistant guard plate 10 installed in the second frame 32, and the medium cavity 24 can be not fixed at the position where the support frame is placed on the impact-resistant guard plate 10 installed in the second frame 32, so as to prevent the medium cavity 24 from being damaged prematurely due to the pressure of the support frame and the cable joint.

[0083] FIG. 6 is a side view of a cable connector protection device according to an embodiment of the present application.

[0084] In some examples, as shown in Figures 1 to 4 and 6, the frame also includes a fifth frame 35 and a sixth frame 36, and the impact-resistant guard plate 10 is also installed in the fifth frame 35 and the sixth frame 36; a guide structure 311 is installed at the opposite ends of the inner side of the first frame 31, and the fifth frame 35 and the sixth frame 36 are slidably installed on the guide structure 311.

[0085] Based on this, as shown in Figures 1 to 4 and 6, the fifth frame 35 and the sixth frame 36 can be regarded as the door frame of the cable joint protection device. The inner side of the first frame 31, that is, when the cable joint is accommodated in the cable joint protection device, the first frame 31 is provided with a relative guide structure 311 on the side facing the cable joint, so that the fifth frame 35 and the sixth frame 36 can slide on the inner side of the first frame 31 through the guide structure 311. By moving the fifth frame 35 and the sixth frame 36 to both sides, the door frame of the cable joint protection device can be opened, so that the operator can observe or inspect the cable joint in the cable joint protection device in time when the cable joint is operating normally, and it is also convenient to repair or replace the cable joint in the cable joint protection device, which is more convenient to use and is conducive to further improving the safety of the site. At the same time, anti-impact shields 10 are also installed in the fifth frame 35 and the sixth frame 36. When the fifth frame 35 and the sixth frame 36 are combined, through the cooperation of the first frame 31, the second frame 32, the third frame 33, the fourth frame 34, the fifth frame 35, the sixth frame 36 and the anti-impact shield 10, the shock wave generated when the cable joint explodes can rush out from the position where the anti-impact shield 10 is not installed on the cable joint protection device, thereby relieving the pressure during the explosion and preventing the surrounding cables from being damaged. In addition, this open protection device can also effectively dissipate heat when the cable joint is operating normally.

[0086] When assembling the cable joint protection device, the impact-resistant protection plate and the fire-proof functional layer 20 can be installed on the corresponding frame first, and the fifth frame 35 and the sixth frame 36 can be installed on the first frame 31 through the guide structure 311, and then the frame can be assembled. For example, the second frame 32 can be placed first, and then the third frame 33 can be moved to the top of the second frame 32, and the bolts 40 at the bottom of the third frame 33 will penetrate the second frame 32, and then the nuts can be screwed in to fix the second frame 32 and the third frame 33; then the first frame 31 can be moved to the top of the second frame 32, and the bolts 40 at the bottom of the first frame 31 can penetrate the second frame 32, and then the nuts can be screwed in to fix the first frame 31 and the second frame 32; finally, the fourth frame 34 can be moved to the top of the first frame 31 and the third frame 33, and the bolts 40 on the side of the fourth frame 34 close to the third frame 33 can first penetrate the third frame 33, and then the bolts 40 on the side of the first frame 31 close to the fourth frame 34 can penetrate the fourth frame 34, and then the nuts can be screwed in to fix the first frame 31, the third frame 33 and the fourth frame 34, and then the assembly of the frame can be completed, making the assembly and use of the cable joint protection device more convenient. If the frame needs to be disassembled, the above operation can be performed in reverse.

[0087] When the cable joint protection device is assembled, a single group of cables is passed through the first frame 31, the second frame 32, the third frame 33, the fourth frame 34, the fifth frame 35 and the sixth frame 36, so that the cable joint is located in a through cavity surrounded by the impact-resistant guard plate 10 installed in the second frame 32, the impact-resistant guard plate 10 installed in the third frame 33, the impact-resistant guard plate 10 installed in the fourth frame 34, the impact-resistant guard plate 10 installed in the fifth frame 35 and the impact-resistant guard plate 10 installed in the sixth frame 36, so as to protect the cable joint. Through the cooperation of the frame and the impact-resistant guard plate 10, the shock wave generated by the explosion of the cable joint can rush out from both ends of the through cavity, that is, from the two ends of the frame where the impact-resistant guard plate 10 is not installed, so as to relieve the pressure of the shock wave generated by the explosion and prevent the surrounding cables from being punctured.

[0088] Further, as shown in FIG. 1 to FIG. 4 and FIG. 6 , the guide structure 311 may be disposed at opposite ends of the first frame 31 close to the second frame 32 and the fourth frame 34 .

[0089] Exemplarily, as shown in Fig. 1 to Fig. 4 and Fig. 6, the guide structure 311 may be an L-shaped guide structure 311. Further, the guide structure 311 disposed at one end of the first frame 31 close to the second frame 32 is an L-shaped guide structure 311 bent in the direction of the fourth frame 34, and the guide structure 311 disposed at one end of the first frame 31 close to the fourth frame 34 is an L-shaped guide structure 311 bent in the direction of the second frame 32. This is only an example and is not specifically limited. The guide structure 311 may also be a guide structure 311 of other shapes.

[0090] Exemplarily, the impact-resistant shield 10 may be installed in the first frame 31 , the second frame 32 , the third frame 33 , the fourth frame 34 , the fifth frame 35 and the sixth frame 36 by welding.

[0091] Exemplarily, as shown in Figures 1 to 4, a head handle 50 is also installed on the side of the impact-resistant guard plate 10 installed in the fifth frame 35 and the sixth frame 36 facing away from the fire-proof functional layer 20. The handle 50 can be used to drive the movement of the fifth frame 35 and the sixth frame 36, further improving the convenience of using the cable joint protection device.

[0092] FIG. 7 is a schematic diagram of the structure of a limiter in a cable connector protection device according to an embodiment of the present application.

[0093] In some examples, as shown in FIGS. 1 to 4 and 7 , the cable joint protection device further includes a limiter 60 , which is installed at one end of the second frame 32 and / or the fourth frame 34 close to the guide structure 311 .

[0094] Based on this, when there is no need to maintain, observe, inspect or replace the cable joint, the limiter 60 can limit the door frames of the cable joint protection device, i.e. the fifth frame 35 and the sixth frame 36, so that the cable joint protection device can better protect the cable joint.

[0095] Exemplarily, as shown in Figure 7, the limit member 60 may include a positioning plate 61, a sleeve 62 and an L-shaped positioning pin 63, wherein the positioning plate 61 is fixed to one end of the second frame 32 and / or the fourth frame 34 close to the guide structure 311 by screws, the sleeve 62 is connected to the surface of the positioning plate 61, and the L-shaped positioning pin 63 is located inside the sleeve 62 and can move on the surface of the positioning plate 61. During specific implementation, when it is necessary to limit the movement of the fifth frame 35 and the sixth frame 36, the bottom of the L-shaped positioning pin 63 can be against the side of the guide structure 311, the fifth frame 35 and the sixth frame 36; when it is necessary to move the fifth frame 35 and the sixth frame 36, the L-shaped positioning pin 63 is bent to allow the L-shaped positioning pin 63 to rotate on the surface of the positioning plate 61 and the sleeve 62, so that the L-shaped positioning pin 63 and the positioning plate 61 are in a vertical state, and then the L-shaped positioning pin 63 is pulled upward, and the bottom of the L-shaped positioning pin 63 will release the limit on the fifth frame 35 and the sixth frame 36, and then the fifth frame 35 and the sixth frame 36 are moved to both sides, and the door frame of the cable joint protection device can be opened, which is convenient for operators to observe, inspect, repair or replace the cable joints, etc., which is more convenient to use.

[0096] Exemplarily, as shown in Figures 1 to 4, a blocking block 70 can also be provided on the side of the impact-resistant guard plate 10 installed in the fifth frame 35 and the sixth frame 36 facing away from the fire-proof functional layer 20 to prevent the fifth frame 35 and the sixth frame 36 from being pulled too far.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A cable joint protection device, characterized in that: include: frame; An impact-resistant guard plate is installed in the frame and encloses a through cavity with two ends penetrating through it.

2. The cable joint protection device according to claim 1, characterized in that: The cable joint protection device also includes: A fireproof functional layer, wherein the fireproof functional layer is arranged on the inner side of the impact-resistant protective plate; the fireproof functional layer comprises a first flame-retardant layer.

3. The cable joint protection device according to claim 2, characterized in that: The fireproof functional layer also includes: A second flame retardant layer is stacked with the first flame retardant layer, and the second flame retardant layer is located between the impact-resistant guard plate and the first flame retardant layer.

4. The cable joint protection device according to claim 3, characterized in that: The fireproof functional layer also includes: A third flame retardant layer is stacked with the first flame retardant layer and the second flame retardant layer, and the third flame retardant layer is located between the anti-impact protective plate and the second flame retardant layer; and air holes are opened on the surface of the third flame retardant layer.

5. The cable joint protection device according to claim 3, characterized in that: The fireproof functional layer also includes: A plurality of medium cavities are located between the first flame retardant layer and the second flame retardant layer, wherein the medium cavities are fixed to a surface of the first flame retardant layer facing the second flame retardant layer, and the medium cavities are filled with a fire extinguishing medium.

6. The cable joint protection device according to claim 5, characterized in that: A spike structure is correspondingly arranged on one side of the medium cavity away from the first flame retardant layer, one end of the spike structure is fixed to the side of the second flame retardant layer facing the medium cavity, and the other end faces the medium cavity.

7. The cable joint protection device according to any one of claims 1 to 6, characterized in that: The impact-resistant guard plate is provided with a plurality of through holes.

8. The cable joint protection device according to any one of claims 1 to 6, characterized in that: The frame includes a first frame, a second frame, a third frame and a fourth frame which are spliced ​​to each other, the first frame is arranged opposite to the third frame, and the second frame is arranged opposite to the fourth frame; The anti-impact shield is installed at least in the second frame, the third frame and the fourth frame, and the anti-impact shield installed in the second frame is also used to carry the cable connector.

9. The cable joint protection device according to claim 8, characterized in that: The frame further comprises a fifth frame and a sixth frame, and the anti-impact guard plate is further installed in the fifth frame and the sixth frame; Guiding structures are installed at opposite ends of the inner side of the first frame, and the fifth frame and the sixth frame are slidably installed on the guiding structures.

10. The cable joint protection device according to claim 9, characterized in that: The cable joint protection device further comprises a limiting member, and the limiting member is installed at one end of the second frame and / or the fourth frame close to the guide structure.

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