European style rear connection lightning arrester

Abstract

The utility model relates to a European style rear connection lightning arrester. The technical problem to be solved by the utility model is to provide a European style rear connection lightning arrester. According to the technical scheme, the cable connector comprises a T-shaped barrel, a cable assembly, a screw fixedly connected with the cable assembly through a hexagonal nut, a barrel rear plug, a barrel end cover and a nut anti-loosening sleeve, a barrel butt joint channel and a cable imbedding channel are arranged in the T-shaped barrel, a conical imbedding opening is formed in the barrel butt joint channel, and the cable imbedding opening is arranged in the conical imbedding opening. The nut anti-loosening sleeve comprises an anti-loosening sleeve limiting table and an anti-loosening sleeve mounting column, a hexagonal limiting groove is formed in the anti-loosening sleeve limiting table, and an anti-loosening sleeve receding hole is formed in the anti-loosening sleeve mounting column. The lightning arrester has the advantages that the nut anti-loosening sleeve is additionally arranged to prevent the hexagonal nut from rotating, the stability of connection between the nut and the screw rod is ensured, and connection loosening after external vibration or long-time use is prevented, so that the long-term reliability and safety of the lightning arrester are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a European type rear connection lightning arrester. BACKGROUND

[0002] The European type rear connection lightning arrester is used in the power system, especially in the transformer substation and transmission line, and is an important electrical protection device for protecting equipment from lightning overvoltage damage. The existing European type rear connection lightning arrester has the following defects in the use process: 1. The connection between the hexagonal nut inside the lightning arrester and the screw rod may be loose due to long-term use and changes in the external environment, resulting in poor contact or failure of the lightning arrester, increasing the risk of system failure; 2. The disassembly method of the rear plug and the end cover of the cylinder is relatively complex, and the inconvenience in the disassembly process increases the workload of maintenance and repair, reducing the operability of the equipment. This is improved and optimized. SUMMARY

[0003] To solve the above problems, the technical problem to be solved by the utility model is to provide a European type rear connection lightning arrester.

[0004] The utility model discloses a European type rear connection lightning arrester adopts the technical scheme: including T type cylinder, cable assembly, through the hexagonal nut with cable assembly connection fixed screw rod, cylinder rear plug and cylinder end cover, its characterized in that still includes nut anti-loose cover, the T type cylinder is equipped with the cylinder butt joint channel that sets up transversely and the cable placement channel that sets up longitudinally and the upper end is linked with cylinder butt joint channel, the cylinder butt joint channel is equipped with the tapered entrance, the nut anti-loose cover includes anti-loose cover limiting platform and anti-loose cover mounting column, the anti-loose cover limiting platform is equipped with the hexagonal limiting slot for preventing the hexagonal nut rotates, the anti-loose cover mounting column is equipped with the anti-loose cover let -alone hole for the screw rod placement, the cylinder rear plug is the tapered structure that is opposite to the tapered entrance, the cylinder rear plug is equipped with rear plug inner positioning slot, the nut anti-loose cover is detachably installed in rear plug inner positioning slot, the cylinder end cover is covered in the end of cylinder rear plug and T type cylinder.

[0005] The outer wall of the anti-loose cover mounting column is provided with an anti-loose cover first clamping groove and an anti-loose cover second clamping groove, and the rear plug is provided with a first clamping protrusion clamped with the anti-loose cover first clamping groove and a second clamping protrusion clamped with the anti-loose cover second clamping groove on the inner wall of the rear plug positioning groove.

[0006] The anti-loose cover first clamping groove is arranged close to the anti-loose cover limiting platform, and the depth of the anti-loose cover first clamping groove is greater than the depth of the anti-loose cover second clamping groove.

[0007] The cylinder end cover comprises an end cover end sealing part and an end cover wrapping part arranged at both ends of the end cover end sealing part, a main end cover clamping block is arranged in the middle of the end cover end sealing part, a rear plug clamping hole is arranged at the end of the rear plug for clamping the main end cover clamping block, an end cover inner protrusion is arranged in the inside of the end cover wrapping part, and a cylinder clamping groove is arranged on the outer wall of the T-shaped cylinder end for clamping the end cover inner protrusion.

[0008] The main end cover clamping block is in dovetail structure.

[0009] The end cover wrapping part is provided with an end cover connecting hole, the outer wall of the T-shaped cylinder end is provided with a cylinder screw hole communicated with the end cover connecting hole, and the end cover connecting hole and the cylinder screw hole are connected through a screw.

[0010] The rear plug is provided with a rear plug pulling hole communicated with the rear plug clamping hole and facilitating the dismounting of the rear plug at the rear plug clamping hole, and the rear plug pulling hole is in T-shaped structure.

[0011] The utility model discloses a European type rear joint lightning arrester has the advantages that the nut anti-loosening sleeve is additionally arranged to prevent the rotation of the hexagonal nut, the stability of the nut and screw rod connection is ensured, the connection loosening after external vibration or long time use is prevented, and the long-term reliability and safety of the lightning arrester are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0013] Figure 1 It is the sectional view of the utility model European type rear joint lightning arrester;

[0014] Figure 2 It is the sectional view of the utility model T-shaped cylinder;

[0015] Figure 3 It is Figure 2 the enlarged view of;

[0016] Figure 4 It is a structure schematic view of the utility model nut anti-loosening sleeve;

[0017] Figure 5 It is another structure schematic view of the utility model nut anti-loosening sleeve;

[0018] Figure 6 It is the sectional view of the utility model rear plug;

[0019] Figure 7 It is the sectional view of the utility model cylinder end cover;

[0020] Figure 8 is Figure 7 a magnified view of DETAILED DESCRIPTION

[0021] As Figures 1-8 shown, the utility model relates to a European type rear joint lightning arrester, including T type cylinder 1, cable assembly 2, through hexagonal nut 3 with cable assembly 2 is connected fixed screw rod 4, cylinder rear plug 5 and cylinder end cover 6, nut anti-loosening sleeve 7, the T type cylinder 1 is equipped with the cylinder butt joint channel of transverse arrangement and longitudinal arrangement and the upper end with cylinder butt joint channel intercommunication cable is placed into the channel 10, the cylinder butt joint channel is equipped with tapered entrance 11, nut anti-loosening sleeve 7 includes anti-loosening sleeve limiting platform 12 and anti-loosening sleeve mounting column 13, anti-loosening sleeve limiting platform 12 is equipped with the hexagonal limiting slot 14 for preventing hexagonal nut 3 rotates in, anti-loosening sleeve mounting column 13 is equipped with the anti-loosening sleeve accommodation hole 15 for screw rod 4 is placed into, cylinder rear plug 5 is the tapered structure of butt joint with tapered entrance 11, cylinder rear plug 5 is equipped with rear plug inner positioning groove 17, nut anti-loosening sleeve 7 is detachably installed in rear plug inner positioning groove 17, cylinder end cover 6 is covered in cylinder rear plug 5 and the end of T type cylinder 1.

[0022] The outer wall of anti-loosening sleeve mounting column 13 is provided with anti-loosening sleeve first clamping groove 18 and anti-loosening sleeve second clamping groove 19, and the inner wall of the rear plug inner positioning groove 17 of the cylinder rear plug 5 is provided with a first clamping protrusion 20 clamped with the anti-loosening sleeve first clamping groove 18 and a second clamping protrusion 21 clamped with the anti-loosening sleeve second clamping groove 19, so that the nut anti-loosening sleeve 7 and the cylinder rear plug 5 are easily disassembled while being firmly and reliably connected and not easily falling off, improving the stability and reliability of the overall installation.

[0023] The anti-loosening sleeve first clamping groove 18 is arranged close to the anti-loosening sleeve limiting platform 12, and the depth of the anti-loosening sleeve first clamping groove 18 is greater than the depth of the anti-loosening sleeve second clamping groove 19.

[0024] The cylinder end cover 6 includes an end cover end sealing portion 23 and an end cover wrapping portion 24 arranged at both ends of the end cover end sealing portion 23, the end cover end sealing portion 23 is provided with an end cover main clamping block 25 in the middle, the end of the cylinder rear plug 5 is provided with a rear plug clamping hole 26 clamped with the end cover main clamping block 25, and the inner side of the end cover wrapping portion 24 is provided with an end cover inner protrusion 27, and the outer wall of the end of the T type cylinder 1 is provided with a cylinder clamping groove 31 clamped with the end cover inner protrusion 27, thereby increasing the stability of the connection and avoiding loosening of the end cover.

[0025] The end cover main clamping block 25 is in dovetail structure, thereby improving the firmness of the connection.

[0026] The end cover connecting hole 28 is arranged on the end cover wrapping part 24, the cylinder threaded hole 32 is arranged on the outer wall of the end of the T-shaped cylinder body 1 and communicates with the end cover connecting hole 28, the end cover connecting hole 28 and the cylinder threaded hole 32 are connected through a screw, and the connection between the cylinder end cover 6 and the T-shaped cylinder body 1 is further enhanced, and loosening after long-time use is prevented.

[0027] The rear plug 5 is provided with a rear plug pull-out hole 33 at the rear plug bayonet 26, the rear plug pull-out hole 33 communicates with the rear plug bayonet 26 and facilitates dismounting of the rear plug 5, and the rear plug pull-out hole 33 is of a T-shaped structure, so that dismounting is more convenient.

[0028] The above is only a preferred embodiment of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A European-style rear-mounted surge arrester, comprising a T-shaped cylinder (1), a cable assembly (2), a screw (4) connected and fixed to the cable assembly (2) by a hexagonal nut (3), a cylinder rear plug (5), and a cylinder end cap (6), characterized in that: It also includes a nut anti-loosening sleeve (7). The T-shaped cylinder (1) is provided with a horizontally arranged cylinder docking channel and a longitudinally arranged cable insertion channel (10) whose upper end is connected to the cylinder docking channel. The cylinder docking channel is provided with a conical insertion port (11). The nut anti-loosening sleeve (7) includes an anti-loosening sleeve limiting platform (12) and an anti-loosening sleeve mounting post (13). The anti-loosening sleeve limiting platform (12) is provided with a hexagonal limiting groove (14) for preventing the hexagonal nut (3) from rotating. The anti-loosening sleeve mounting post (13) is provided with an anti-loosening sleeve clearance hole (15) for inserting the screw (4). The cylinder rear plug (5) is a conical structure that is connected to the conical insertion port (11). The cylinder rear plug (5) is provided with a rear plug inner positioning groove (17). The nut anti-loosening sleeve (7) is detachably installed in the rear plug inner positioning groove (17). The cylinder end cap (6) is covered on the end of the cylinder rear plug (5) and the T-shaped cylinder (1).

2. The European-style post-connection surge arrester according to claim 1, characterized in that: The outer wall of the anti-loosening sleeve mounting column (13) is provided with an anti-loosening sleeve first slot (18) and an anti-loosening sleeve second slot (19). The cylinder rear plug (5) is provided with a first locking protrusion (20) that engages with the anti-loosening sleeve first slot (18) and a second locking protrusion (21) that engages with the anti-loosening sleeve second slot (19) at the inner wall of the positioning groove (17) of the rear plug.

3. The European-style post-connection surge arrester according to claim 2, characterized in that: The first slot (18) of the anti-loosening sleeve is located near the anti-loosening sleeve limiting platform (12), and the depth of the first slot (18) of the anti-loosening sleeve is greater than the depth of the second slot (19) of the anti-loosening sleeve.

4. The European-style post-connection surge arrester according to claim 3, characterized in that: The cylindrical end cap (6) includes an end cap sealing part (23) and an end cap wrapping part (24) provided at both ends of the end cap sealing part (23). The end cap sealing part (23) is provided with an end cap main locking block (25) in the middle. The end of the cylindrical rear plug (5) is provided with a rear plug locking slot (26) that engages with the end cap main locking block (25). The end cap wrapping part (24) is provided with an end cap inner protrusion (27). The outer wall of the end of the T-shaped cylindrical body (1) is provided with a cylindrical body locking groove (31) that engages with the end cap inner protrusion (27).

5. The European-style post-connection surge arrester according to claim 4, characterized in that: The end cap main locking block (25) has a dovetail-shaped structure.

6. The European-style post-connection surge arrester according to claim 4, characterized in that: The end cap wrapping part (24) is provided with an end cap connecting hole (28), and the outer wall of the end of the T-shaped cylinder (1) is provided with a cylinder thread hole (32) that communicates with the end cap connecting hole (28). The end cap connecting hole (28) and the cylinder thread hole (32) are connected by screws.

7. The European-style post-connection surge arrester according to claim 4, characterized in that: The cylinder rear plug (5) has a rear plug pull-out port (33) at the rear plug slot (26) that communicates with the rear plug slot (26) and facilitates the disassembly of the cylinder rear plug (5). The rear plug pull-out port (33) is a T-shaped structure.

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