Cable forming cabinet

Abstract

The utility model discloses a cable end forming cabinet, which comprises an end forming cabinet body, a bottom cover for wire incoming is mounted at the bottom of the end forming cabinet body, a top cover for wire incoming is mounted at the top of the end forming cabinet body, a first cable and a second cable are arranged in the end forming cabinet body, opposite ends of the first cable and the second cable are connected, and an end forming assembly is mounted in the end forming cabinet body. The first grounding busbar and the second grounding busbar are installed in the terminal cabinet body, the arc isolation box is installed outside the discharge box, the discharge box is installed between the first grounding busbar and the second grounding busbar, and the arc isolation box and the discharge box are used for protecting the joint of the first cable and the second cable. According to the utility model, by using the cooperative use mode of the terminal forming cabinet body, the first cable, the second cable and the terminal forming assembly, the armor layer on the first cable and the aluminum sheath layer on the second cable are independently arranged and grounded, mutual interference is avoided, spark arcs possibly generated by abnormal large current are isolated, and other cables are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of terminal cabinets, in particular to a cable terminal cabinet. Background Art

[0002] According to the requirements of the China Railway Corporation, railway signal cables should be equipped with primary and secondary cable terminations. The new type of railway signal cable termination cabinet (rack) is suitable for cable assembly in various types of stations. It has the function of cable termination and performs online real-time monitoring of the railway signal cable's power frequency current, lightning current, temperature and humidity. When accidents such as lightning strikes and line faults occur, causing the cable temperature to rise or even burn, the railway signal cable termination and discharge cabinet control system will provide operating status display and upload and corresponding fire extinguishing actions.

[0003] The cable termination and drainage cabinet is used for the installation of cable shielding terminal grounding to protect the cable shielding layer. However, the signal cable lines are easily invaded by traction return current. Large current is directly introduced from the outdoor lines into the machinery room, which can easily cause damage to the distribution board equipment, heating and burning of indoor cables, etc. In thunderstorms, strong lightning currents will also be induced or conducted to the signal cables and directly enter the machinery room, damaging indoor equipment and possibly seriously affecting driving safety. Utility Model Content

[0004] The purpose of the utility model is to provide a cable terminal cabinet to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a cable terminal cabinet, comprising a terminal cabinet body, a bottom cover of an incoming line is installed at the bottom of the terminal cabinet body, and a top cover of an incoming line is installed at the top of the terminal cabinet body;

[0006] The first cable and the second cable are arranged inside the termination cabinet, and the first cable and the second cable are connected at opposite ends. A termination assembly is installed inside the termination cabinet, and the termination assembly includes:

[0007] A first grounding busbar and a second grounding busbar, wherein the first grounding busbar and the second grounding busbar are installed inside the terminal cabinet;

[0008] An arc isolation box and a drain box, wherein the arc isolation box is installed outside the drain box, and the drain box is installed between the first grounding bus and the second grounding bus. The arc isolation box and the drain box are used to protect the connection between the first cable and the second cable.

[0009] Preferably, a fixing bracket is fixedly connected to the interior of the terminal cabinet, and the fixing bracket is used to fix and restrain the first cable and the second cable. The first cable is provided with an armor layer, and the second cable is provided with an aluminum sheath layer.

[0010] Preferably, the outside of the discharge box is symmetrically fixedly connected with a grounding terminal, the outside of the armor layer is installed with a steel belt, the outside of the aluminum sheath layer is installed with a shielding copper foil, and the outside of the shielding copper foil and the outside of the steel belt are both connected with a drainage wire.

[0011] Preferably, one end of the drain wire is connected to a grounding terminal, and the grounding terminals symmetrically arranged outside the drain box are respectively connected to the first grounding bus and the second grounding bus.

[0012] Preferably, a glue injection chamber is formed inside the leakage box, and the glue injection chamber is used to inject insulating sealant. A glue injection hole is provided on one side of the leakage box, and a sealing bolt is connected to the internal thread of the glue injection hole.

[0013] Preferably, the outside of the first cable and the outside of the second cable are both provided with nameplates, the inside of the terminal cabinet is installed with a temperature sensor, a lightning current collector and an industrial frequency current collector for detecting the first cable and the second cable, and the inside of the terminal cabinet is installed with an automatic fire extinguishing device.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model utilizes the coordinated use of a terminal cabinet, a first cable, a second cable and a terminal assembly. The terminal assembly includes a first grounding bus, a second grounding bus, an arc isolation box, a leakage box, a grounding terminal, a steel belt and a shielding copper foil, so that the armor layer on the first cable and the aluminum sheath layer on the second cable are independently grounded to avoid mutual interference, isolate the spark arc that may be generated by abnormally large current, and prevent damage to other cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the front structure of the arc isolation box of the utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the front side of the drain box of the utility model.

[0019] In the figure: 1. terminal cabinet; 2. bottom cover; 3. top cover; 4. fixing bracket; 5. first cable; 51. armor layer; 6. second cable; 61. aluminum sheath layer; 7. terminal assembly; 71. first grounding bus; 72. second grounding bus; 73. arc isolation box; 74. drain box; 75. grounding terminal; 76. steel strip; 77. shielding copper foil; 78. glue injection chamber; 79. glue injection hole; 710. sealing bolt; 711. drain wire. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] The utility model provides Figure 1-3 The cable terminal cabinet shown comprises a terminal cabinet body 1, a bottom cover 2 for incoming lines is installed at the bottom of the terminal cabinet body 1, and a top cover 3 for incoming lines is installed at the top of the terminal cabinet body 1, that is, a plurality of cable arrangement holes are provided on the tops of the bottom cover 2 and the top cover 3, a first cable 5 and a second cable 6 are arranged inside the terminal cabinet body 1, and the first cable 5 and the second cable 6 are connected at opposite ends, and two fixing brackets 4 are fixedly connected inside the terminal cabinet body 1, and the fixing brackets 4 are used to fix and restrain the first cable 5 and the second cable 6, that is, the first cable 5 and the second cable 6 are respectively installed on the corresponding fixing brackets 4 by fixings and bolts, so as to ensure the stability of the first cable 5 and the second cable 6 installed inside the terminal cabinet body 1, an armor layer 51 is provided on the first cable 5, and an aluminum sheath layer 61 is provided on the second cable 6.

[0022] In particular, a termination assembly 7 is installed inside the termination cabinet 1, and the termination assembly 7 includes a first grounding bus 71, a second grounding bus 72, an arc isolation box 73 and a drain box 74. The first grounding bus 71 and the second grounding bus 72 are installed inside the termination cabinet 1, the arc isolation box 73 is installed outside the drain box 74, and the drain box 74 is installed between the first grounding bus 71 and the second grounding bus 72. The arc isolation box 73 and the drain box 74 are used for protecting the connection between the first cable 5 and the second cable 6. The outside of the drain box 74 is symmetrically fixedly connected with a grounding terminal 75, the outside of the armor layer 51 is installed with a steel belt 76, and the outside of the aluminum sheath layer 61 is installed with a shielding copper foil 77. When the armor layer 51 and the aluminum sheath layer 61 are installed, first use a cable cutter to carefully peel off 15 cm cable outer insulation protection, and clean the oil stains on the armor layer 51 and the aluminum sheath layer 61 to reduce the resistance after the steel belt 76 is connected to the drain wire 711, use a cable-specific cutting tool to peel off the cable protection steel belt 76 at a distance of 5 cm from the place where the insulation protection layer is stripped, and connect and fix the built-in drain wire 711 of the terminal box to the cable armor layer 51 and the aluminum sheath layer 61 through the steel belt 76 and the shielding copper foil 77 respectively, tighten the small throat clamp on the drain wire 711 to fix the connecting wire, the outside of the shielding copper foil 77 and the outside of the steel belt 76 are connected to the drain wire 711, one end of the drain wire 711 is connected to the grounding terminal 75, and the grounding terminals 75 symmetrically arranged on the outside of the drain box 74 are respectively connected to the first grounding bus 71 and the second grounding bus 72, and the connection method is to use a 10mm 2 The copper braided belt is connected to the first grounding bus 71 and the second grounding bus 72 respectively, and the first grounding bus 71 and the second grounding bus 72 are respectively a steel belt grounding bus and an aluminum sheath grounding bus, so that the armor layer 51 on the first cable 5 and the aluminum sheath layer 61 on the second cable 6 are independently grounded to avoid mutual interference, isolate the abnormally large current that may generate sparks and arcs, and prevent damage to other cables.

[0023] Furthermore, a glue injection chamber 78 is formed inside the leakage box 74, and the glue injection chamber 78 is used to inject insulating sealant. A glue injection hole 79 is provided on one side of the leakage box 74, and the internal thread of the glue injection hole 79 is connected with a sealing bolt 710. Sealant can be injected into the glue injection chamber 78 through the glue injection hole 79 to ensure that the connection between the first cable 5 and the second cable 6 inside the leakage box 74 is not affected by external interference.

[0024] Furthermore, the outside of the first cable 5 and the outside of the second cable 6 are both provided with nameplates, and the interior of the terminal cabinet 1 is equipped with a temperature sensor, a lightning current collector and an industrial frequency current collector for detecting the first cable 5 and the second cable 6. The temperature sensor, the lightning current collector and the industrial frequency current collector can detect the temperature, the working current frequency and the lightning strike of the first cable 5 and the second cable 6 in real time. An automatic fire extinguishing device is installed inside the terminal cabinet 1. The automatic fire extinguishing device is mainly composed of a tank body, a sealing sheet, a gas generator, an ultra-fine dry powder fire extinguishing agent, a starter, etc. When a fire occurs inside the terminal cabinet 1, the automatic fire extinguishing device can extinguish the fire inside the terminal cabinet 1.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable terminal cabinet, comprising a terminal cabinet body (1), a bottom cover (2) for incoming cables being installed at the bottom of the terminal cabinet body (1), and a top cover (3) for incoming cables being installed at the top of the terminal cabinet body (1); It is characterized in that A first cable (5) and a second cable (6) are arranged inside the termination cabinet (1), and opposite ends of the first cable (5) and the second cable (6) are connected. A termination assembly (7) is installed inside the termination cabinet (1), and the termination assembly (7) comprises: A first grounding busbar (71) and a second grounding busbar (72), wherein the first grounding busbar (71) and the second grounding busbar (72) are installed inside the terminal cabinet (1); An arc isolation box (73) and a drain box (74), wherein the arc isolation box (73) is installed outside the drain box (74), and the drain box (74) is installed between a first grounding bus (71) and a second grounding bus (72). The arc isolation box (73) and the drain box (74) are used for protecting the connection between the first cable (5) and the second cable (6).

2. The cable terminal cabinet according to claim 1, characterized in that: A fixing bracket (4) is fixedly connected inside the terminal cabinet (1), and the fixing bracket (4) is used to fix and bind a first cable (5) and a second cable (6); an armor layer (51) is provided on the first cable (5), and an aluminum sheath layer (61) is provided on the second cable (6).

3. The cable terminal cabinet according to claim 2, characterized in that: The outside of the discharge box (74) is symmetrically fixedly connected with a grounding terminal (75), the outside of the armor layer (51) is installed with a steel belt (76), the outside of the aluminum sheath layer (61) is installed with a shielding copper foil (77), and the outside of the shielding copper foil (77) and the outside of the steel belt (76) are both connected with a discharge conductor (711).

4. The cable terminal cabinet according to claim 3, characterized in that: One end of the drain wire (711) is connected to a grounding terminal (75), and the grounding terminals (75) symmetrically arranged outside the drain box (74) are respectively connected to the first grounding bus (71) and the second grounding bus (72).

5. The cable terminal cabinet according to claim 4, characterized in that: A glue injection chamber (78) is formed inside the leakage box (74), and the glue injection chamber (78) is used to inject insulating sealant. A glue injection hole (79) is provided on one side of the leakage box (74), and a sealing bolt (710) is connected to the internal thread of the glue injection hole (79).

6. The cable terminal cabinet according to claim 1, characterized in that: The outside of the first cable (5) and the outside of the second cable (6) are both provided with nameplates, the inside of the terminal cabinet (1) is equipped with a temperature sensor for detecting the first cable (5) and the second cable (6), a lightning current collector and an industrial frequency current collector, and the inside of the terminal cabinet (1) is equipped with an automatic fire extinguishing device.

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