Touchable rear-connected lightning arrester

Abstract

The utility model relates to a touchable rear connection lightning arrester. The technical problem to be solved by the utility model is to provide a touchable rear-connected lightning arrester. According to the technical scheme, the lightning arrester comprises a lightning arrester cylinder body, a lightning arrester inner core assembly, a special stud for the lightning arrester, a nut, a stud outer cylinder and an outer cylinder lock sleeve, the lightning arrester cylinder body is provided with a cylinder body butt joint channel and an inner core imbedding channel, and the cylinder body butt joint channel comprises a first inner through groove, a front butt joint hole and a rear butt joint hole; the inner diameter of the first inner through groove is larger than that of the front butt joint hole, and the special stud for the lightning arrester is fixedly connected with the inner core assembly of the lightning arrester through the nut. The double-screw bolt has the advantages that the double-screw bolt outer barrel conducts anti-rotation limiting on the butt joint portion of the double-screw bolt, the outer barrel lock sleeve is in threaded connection with the first inner through groove, a stable locking structure is formed, the problem of loosening or shifting of the double-screw bolt caused by vibration or impact is effectively solved, and the connection stability of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of touch type rear connection lightning arresters. BACKGROUND

[0002] Rear connection lightning arrester is used in power system, especially in substation and transmission line, for protecting equipment from lightning overvoltage damage. The existing rear connection lightning arrester is connected at the rear end of the front joint, and the internal lightning connection is carried out through the thread butt joint of lightning arrester special stud. The lightning arrester special stud is affected by the vibration or impact of the equipment, which causes the displacement of the lightning arrester special stud connection due to loosening, and further affects the stability and reliability of the lightning arrester, increases the risk of lightning arrester failure, and reduces its protection performance. 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 touch type rear connection lightning arrester.

[0004] The utility model touch type rear connection lightning arrester adopts the technical scheme: characterized in that it comprises a lightning arrester cylinder, a lightning arrester inner core assembly, a lightning arrester special stud, a nut, a stud outer cylinder and an outer cylinder lock sleeve, the lightning arrester cylinder is provided with a cylinder butt joint channel arranged transversely and an inner core placement channel arranged longitudinally and connected with the cylinder butt joint channel at the upper end, the cylinder butt joint channel comprises a first inner through groove, a front butt joint hole and a rear butt joint hole which are sequentially communicated, the inner diameter of the first inner through groove is greater than that of the front butt joint hole, the lightning arrester special stud is connected and fixed with the lightning arrester inner core assembly through the nut.

[0005] The inner wall of the first inner through groove is provided with a cylinder inner thread, the lightning arrester special stud comprises a stud butt joint part and a stud screw rod part, the stud butt joint part is a regular hexagonal structure, and a stud butt joint hole is arranged in the stud butt joint part, the stud outer cylinder is arranged in the front butt joint hole, and a regular hexagonal limiting hole for preventing the stud butt joint part from rotating is arranged in the stud outer cylinder, one end of the outer cylinder lock sleeve abuts against the end of the stud outer cylinder, a lock sleeve accommodation hole is arranged in the outer cylinder lock sleeve, and an outer thread of the outer cylinder lock sleeve is threadedly connected with the cylinder inner thread.

[0006] Further comprising a limiting screw, a cylinder limiting groove is arranged in the middle of the outer wall of the stud outer cylinder, the lightning arrester cylinder is provided with a cylinder connecting hole vertically communicated with the front butt joint hole, and the limiting screw is arranged in the cylinder connecting hole and the stud limiting groove.

[0007] The cylinder connecting hole is a threaded hole, and the end of the limiting screw is arranged in the stud limiting groove after the limiting screw is threadedly connected with the cylinder connecting hole.

[0008] The outer cylinder locking sleeve end is provided with locking sleeve installation slots for facilitating tool operation, and the locking sleeve installation slots are square structures.

[0009] The outer cylinder locking sleeve end is provided with locking sleeve installation slots for facilitating tool operation, and the locking sleeve installation slots are square structures.

[0010] The lightning arrester cylinder is provided with cylinder countersunk grooves corresponding to the limiting screws, and the cylinder countersunk grooves are provided with the cylinder connecting holes.

[0011] The utility model discloses a touchable rear lightning arrester, which has the advantages that the outer cylinder locking sleeve is threadedly connected with the first inner through groove, forming a stable locking structure, effectively preventing the loosening or displacement of the stud caused by vibration or impact, and improving the connection stability of the equipment; the limiting screw further enhances the fixing effect of the lightning arrester special stud, and the safety of the lightning arrester is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0013] Figure 1 It is the internal connection structure schematic drawing of the utility model discloses a touchable rear lightning arrester;

[0014] Figure 2 It is the half -cut view of the utility model lightning arrester cylinder;

[0015] Figure 3 It is the partial cut of the utility model lightning arrester special stud;

[0016] Figure 4 It is the half -cut view of the utility model stud outer cylinder;

[0017] Figure 5 It is the half -cut view of the utility model outer cylinder locking sleeve. DETAILED DESCRIPTION

[0018] As Figures 1-5The utility model relates to a touchable rear joint lightning arrester, including lightning arrester cylinder 1, lightning arrester inner core subassembly 2, lightning arrester special stud 3, nut 4, stud outer tube 5 and outer tube lock sleeve 6, the lightning arrester cylinder 1 is equipped with the transversely arranged cylinder butt joint channel and the longitudinally arranged and the upper end with cylinder butt joint channel intercommunication inner core and put in the channel 13, the cylinder butt joint channel includes first inner through groove 14, front butt joint hole 15 and rear butt joint hole 16 that sequentially communicate in head and tail, the inner diameter of first inner through groove 14 is greater than the inner diameter of front butt joint hole 15, the lightning arrester special stud 3 is connected fixed with lightning arrester inner core subassembly 2 through nut 4, the first inner through groove 14 inner wall is equipped with cylinder inner thread 12, the lightning arrester special stud 3 includes stud butt joint part 17 and stud screw rod part 18, the stud butt joint part 17 is regular hexagon structure, and its inner is equipped with stud butt joint hole 19, the stud outer tube 5 is placed in front butt joint hole 15, and its inner is equipped with regular hexagon limit hole 20 for preventing stud butt joint part 17 from rotating, one end of outer tube lock sleeve 6 abuts at stud outer tube 5 end, the outer tube lock sleeve 6 is equipped with lock sleeve give place hole 23, the outer tube lock sleeve 6 outer wall is equipped with lock sleeve outer thread 24 that is connected with cylinder inner thread 12 threadedly, stud outer tube 5 pair regular hexagon limit hole 20 prevents rotation limit to stud butt joint part 17, and the outer tube lock sleeve 6 is connected with cylinder inner thread 12 through lock sleeve outer thread 24, forms the locking structure of stable, effectively prevents the problem of stud loosening or displacement due to vibration or impact, improves the connection stability inside lightning arrester.

[0019] Further include limiting screw 7, the outer wall middle part of stud outer tube 5 is equipped with outer tube limiting groove 21, the lightning arrester cylinder 1 is equipped with cylinder connecting hole 25 with front butt joint hole 15 vertical intercommunication, the limiting screw 7 is threaded on cylinder connecting hole 25 and outer tube limiting groove 21, and limiting screw further enhances the fixing effect of lightning arrester special stud, and the safety of lightning arrester is effectively improved.

[0020] The cylinder connecting hole 25 is a threaded hole, and the end of the limiting screw 7 abuts in the outer tube limiting groove 21 after being screwed with the cylinder connecting hole 25.

[0021] The end of the stud outer tube 5 is provided with an outer tube positioning protrusion 27, and the end of the outer tube lock sleeve 6 is provided with a lock sleeve positioning groove 28 opposite to the outer tube positioning protrusion 27, which is more accurate and reliable in connection.

[0022] The other end of the outer tube lock sleeve 6 is provided with a lock sleeve mounting groove 29 for tool operation, and the lock sleeve mounting groove 29 is a square structure, which facilitates the installation and disassembly of the outer tube lock sleeve 6 and improves the operation efficiency.

[0023] The lightning arrester cylinder 1 is provided with a cylinder countersunk groove 30 corresponding to the limiting screw 7, and the cylinder countersunk groove 30 is provided with the cylinder connecting hole 25, and the surface of the lightning arrester cylinder 1 is smoother.

[0024] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A touchable downstream surge arrester, characterized in that: The system includes a surge arrester cylinder (1), a surge arrester inner core assembly (2), a surge arrester stud (3), a nut (4), a stud outer cylinder (5), and an outer cylinder locking sleeve (6). The surge arrester cylinder (1) is provided with a horizontally arranged cylinder docking channel and a vertically arranged inner core insertion channel (13) whose upper end is connected to the cylinder docking channel. The cylinder docking channel includes a first inner through groove (14), a front docking hole (15), and a rear docking hole (16) that are connected end to end. The inner diameter of the first inner through groove (14) is larger than the inner diameter of the front docking hole (15). The surge arrester stud (3) is connected and fixed to the surge arrester inner core assembly (2) through the nut (4). The inner wall of the first inner through groove (14) is provided with a cylindrical internal thread (12). The surge arrester special stud (3) includes a stud docking part (17) and a stud screw part (18). The stud docking part (17) is a regular hexagonal structure with a stud docking hole (19) inside. The stud outer cylinder (5) is placed in the front docking hole (15) and has a regular hexagonal limiting hole (20) inside to prevent the stud docking part (17) from rotating. One end of the outer cylinder locking sleeve (6) abuts against the end of the stud outer cylinder (5). The outer cylinder locking sleeve (6) has a locking sleeve clearance hole (23) inside. The outer wall of the outer cylinder locking sleeve (6) is provided with a locking sleeve external thread (24) that is threadedly connected to the cylindrical internal thread (12).

2. The touchable downstream surge arrester according to claim 1, characterized in that: It also includes a limiting screw (7), and the outer cylinder of the stud outer cylinder (5) is provided with an outer cylinder limiting groove (21) in the middle of the outer wall. The surge arrester cylinder (1) is provided with a cylinder connecting hole (25) that is perpendicular to the front docking hole (15). The limiting screw (7) passes through the cylinder connecting hole (25) and the outer cylinder limiting groove (21).

3. The touchable downstream surge arrester according to claim 2, characterized in that: The cylinder connecting hole (25) is a threaded hole. After the limiting screw (7) is threadedly connected to the cylinder connecting hole (25), its end abuts against the outer cylinder limiting groove (21).

4. The touchable downstream surge arrester according to claim 1, characterized in that: The stud outer cylinder (5) has an outer cylinder positioning protrusion (27) at its end, and the outer cylinder locking sleeve (6) has a locking sleeve positioning groove (28) that is opposite to the outer cylinder positioning protrusion (27) at its end.

5. The touchable downstream surge arrester according to claim 1, characterized in that: The other end of the outer cylinder lock sleeve (6) is provided with a lock sleeve mounting groove (29) for easy tool operation. The lock sleeve mounting groove (29) has a square structure.

6. The touchable downstream surge arrester according to claim 2, characterized in that: The surge arrester cylinder (1) is provided with a cylinder countersunk groove (30) corresponding to the limiting screw (7), and the cylinder connecting hole (25) is provided in the cylinder countersunk groove (30).

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