CN110993217B

CN110993217B - Column type insulator

Info

Publication number: CN110993217B
Application number: CN201911397856.6A
Authority: CN
Inventors: 颜克
Original assignee: Pingxiang Huarui Electric Porcelain Electrical Appliance Co ltd
Current assignee: Pingxiang Huarui Electric Porcelain Electrical Appliance Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-01-12
Anticipated expiration: 2039-12-30
Also published as: CN110993217A

Abstract

The invention discloses a column insulator, which relates to the field of power distribution of an electric power system and comprises a core rod, wherein an insulator umbrella, an arc striking rod, a fixing piece and a positioning piece are arranged on the core rod, the fixing piece is fixedly connected with the core rod, and the positioning piece is rotatably connected with the core rod; the fixed piece is provided with a second sliding chute; the positioning piece is provided with a second sliding block, and the fixing piece and the positioning piece are fixed through a second fastening piece; a third sliding groove is formed in the side wall of the positioning piece, and a third sliding block is arranged on the arc striking rod; the arc striking rod is fixed on the positioning piece through a third fastening piece; the lower end of the core rod is provided with an annular electrode, the annular electrode is sleeved on the core rod and can move along the vertical direction, and the moving distance of the annular electrode along the vertical direction is larger than or equal to the moving distance of the arc striking rod along the third sliding groove. The arc striking rod has the advantages that the arc striking rod can rotate around the core rod and can move in the vertical direction, and the discharge gap distance can be effectively adjusted.

Description

Column type insulator

Technical Field

The invention relates to the technical field of power distribution equipment of a power system, in particular to a column insulator.

Background

The insulator is a special insulating control, and can play the dual functions of supporting a lead and preventing current from being grounded in an overhead transmission line. The insulator is used for the junction of the electric wire tower and the lead bearing part, and the junction of the substation framework and the line. The insulator is exposed to the atmosphere throughout the year and is easy to be struck by lightning, so that the insulator is damaged.

In the lightning protection post insulator in the prior art, as shown in fig. 1, the distance between the ball head of an insulating arc striking rod and an installation support is less than a discharge gap distance c, when lightning flashover occurs near a line tower, lightning stroke pulse voltage on a line firstly breaks through the shortest air gap distance to cause the discharge between a high-voltage arc striking rod and a metal support, and due to factors such as small gap distance, non-uniformity of gaps and the like, arc is difficult to extinguish in time, a ground fault is formed, and the trip rate of the line is improved; even in humid or heavy rainstorm weather, a loop is formed at the gap distance, the circuit is in single-phase grounding tripping, normal power supply cannot be realized, and the normal production and life of residents are influenced. Secondly, because of the limitation of the line space corridor, sometimes a plurality of lines are erected on the same base tower, especially equipment towers are arranged, the number of the lines on the poles is large, the orientation of the arc striking rod of the existing lightning protection post insulator is fixed, the electrical safety distance between the arc striking rod of the lightning protection post insulator and other equipment or lines is difficult to ensure, and the safe operation of the lines is influenced.

Chinese patent CN109390111A discloses a lightning protection post insulator, the arc striking rod of which can rotate around the core rod, although the safety distance between the ball head of the arc striking rod and other metal or conductor on the rod can be ensured to a certain extent to be greater than the discharge gap distance of the insulating arc striking body, the arc striking rod can only rotate around the core rod; meanwhile, the wiring device comprises a wiring block and a compression screw, the wiring block is connected with a wire, the compression screw compresses the wire, the wiring block is not attached to the wire, when the wiring device is installed, the wire is easily damaged due to too tight compression of the compression screw, the wire is easily separated from the wiring block due to too loose compression of the compression screw.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art: a post insulator is provided.

The technical solution of the invention is as follows:

a column type insulator comprises a core rod, wherein an insulator umbrella and an arc striking rod are connected to the core rod, a fixing piece and a positioning piece are further arranged on the insulator, the fixing piece is fixedly arranged on the core rod, and the positioning piece is sleeved on the core rod and can rotate around the core rod; the upper end of the fixing piece is provided with a second sliding chute with an upward opening and a round shape; the lower end of the positioning piece is provided with a second sliding block matched with the second sliding groove, and the positioning piece is in rotating connection with the fixing piece through the matching of the second sliding block and the second sliding groove; the fixing piece and the positioning piece are fixed through a second fastening piece; a third sliding groove with an outward opening is formed in the side wall of the positioning piece, and a third sliding block matched with the third sliding groove is arranged at the horizontal section of the arc striking rod; the arc striking rod is fixed on the positioning piece through a third fastening piece; the lower end of the core rod is provided with an annular electrode matched with the arc striking rod, and the annular electrode is sleeved on the core rod.

Furthermore, a wiring device is arranged at the upper end of the core rod; the wire connecting device comprises a second fixed seat, a first fastener and an L-shaped first fixed seat, the first fixed seat is fixedly connected with the core rod, a first groove with an upward opening is formed in the horizontal end of the first fixed seat, and a first sliding groove in the vertical direction is formed in the vertical end of the first fixed seat; a second groove with a downward opening is formed in the second fixed seat, and the second groove is matched with the first groove; a first sliding block matched with the first sliding groove is arranged on the side wall of the second fixed seat; the first fastener is used for fixing the first fixing seat and the second fixing seat.

Further, the first fastener comprises a bolt and a matched nut, first mounting holes matched with each other are formed in the first fixing seat and the second fixing seat, and the bolt is mounted in the first mounting holes.

Furthermore, the number of the first fasteners is two, the first mounting holes are respectively formed in two ends of the first fixing seat and two ends of the second fixing seat, and the first fasteners are mounted at two ends of the first fixing seat and two ends of the second fixing seat.

Furthermore, a compression spring is arranged on the bolt.

Furthermore, a second mounting hole in the horizontal direction is formed in the second sliding block, a third mounting hole communicated with the second sliding groove in the horizontal direction is formed in the fixing piece, and the second fastener is mounted in the second mounting hole and the third mounting hole.

Furthermore, a fourth mounting hole communicated with the third sliding groove is formed in the side wall of the positioning piece, a fifth mounting hole matched with the fourth mounting hole is formed in the horizontal section of the arc striking rod, and a third fastener is mounted in the fourth mounting hole and the fifth mounting hole.

Further, the distance of the annular electrode moving along the vertical direction is greater than or equal to the distance of the arc ignition rod moving along the third sliding chute.

Furthermore, a fourth sliding groove located below the insulator umbrella is formed in the outer wall of the mandrel, a fourth sliding block is arranged on the inner wall of the annular electrode, the fourth sliding block is installed in the fourth sliding groove, and the annular electrode is fixed through a fourth fastener.

Further, the degree of the fourth sliding groove is larger than or equal to the moving distance of the arc striking rod along the third sliding groove.

The invention has the beneficial effects that:

1. the arc striking rod is arranged on the positioning piece, and the positioning piece can rotate around the fixing piece through the matching of the second sliding block of the positioning piece and the second sliding groove of the fixing piece, so that the arc striking rod can rotate around the core rod, and the angle of the arc striking rod is convenient to adjust; meanwhile, the positioning piece is provided with a third sliding groove, and the arc striking rod is provided with a third sliding block which is matched with the third sliding groove, so that the arc striking rod can move up and down along the third sliding groove, and the arc striking rod can move along the vertical direction; therefore, the safe distance between the bulb of the arc striking rod and other metals or conductors arranged on the insulator is ensured to be larger than the discharge gap distance of the arc striking rod by adjusting the angle and the position of the arc striking rod, so that the safe operation of a circuit is ensured; and through the cooperation of spout and slider, conveniently adjust setting element pivoted angle and the distance that the striking stick reciprocated.

2. According to the wiring device, the first groove and the second groove are matched, so that the inner surface of the wiring device can be better attached to the surface of an electric wire, the abrasion of the electric wire for micro-vibration action can be reduced, and the probability of abrasion breakage of a steel core aluminum conductor is reduced; in addition, the first sliding block on the second fixed seat of the wiring device is matched and fixed with the first sliding groove on the first fixed seat, so that the second fixed seat can move along the first fixed seat, and the wiring device can be suitable for mounting wires with different diameters; simultaneously, through first slider and first spout cooperation location, be convenient for will install the second fixing base on first fixing base through the fastener.

3. The arc striking rod can move up and down along the third sliding groove, and the annular electrode can also move along the fourth sliding groove by adjusting the annular electrode, so that the position of the annular electrode on the core rod can be adjusted, the lower end of the arc striking rod is opposite to the annular electrode, the condition that the lower end of the arc striking rod cannot be opposite to the annular electrode due to rotation or movement of the arc striking rod is avoided or reduced, and stable matching between the electric annular electrode and the arc striking rod is ensured.

Drawings

Fig. 1 is a schematic structural view of an insulator according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the fixing member and the positioning member of the present invention;

FIG. 4 is a schematic top view of the fastener of the present invention;

FIG. 5 is a schematic bottom view of the positioning member of the present invention;

FIG. 6 is a schematic cross-sectional view of a positioning member according to the present invention;

FIG. 7 is a top plan view of the arc starting rod of the present invention;

FIG. 8 is a schematic top view of the first fixing base of the present invention;

FIG. 9 is a bottom view of the second fixing base of the present invention;

FIG. 10 is a cross-sectional view of a ring electrode of the present invention

Reference numbers in the figures:

100. a core rod; 101. an insulator umbrella; 102. an arc striking rod; 103. a ring electrode; 104. a fourth slider; 105. a fourth chute; 106. a first fixed seat; 107. a second fixed seat; 108. a first fastener; 1081. a bolt; 1082. a nut; 109. a first groove; 110. a first chute; 111. a second groove; 112. a first slider; 113. a compression spring; 114. a first mounting hole; 115. a fifth mounting hole; 116. a fourth fastener; 117. mounting holes;

200. a fixing member; 201. a positioning member; 202. a second chute; 203. a second slider; 204. a second fastener; 205. a third chute; 206. a third fastener; 207. a second mounting hole; 208. a third mounting hole; 209. a fourth mounting hole; 210. and a fourth mounting hole.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

Referring to fig. 1 to 10, the present invention provides a column insulator, which includes a core rod 100, wherein a wiring device is disposed at an upper end of the core rod 100; the core rod 100 is connected with at least three insulator umbrellas 101 and arc striking rods 102, and the at least three insulator umbrellas 101 are arranged on the core rod 100 from top to bottom.

The insulator is further provided with a fixing piece 200 and a positioning piece 201, wherein the fixing piece 200 is arranged on the outer wall of the core rod 100 and is fixedly connected with the core rod 100; the positioning member 201 is sleeved on the core rod 100 and can rotate around the core rod 100. The upper end of the fixing member 200 is provided with a second chute 202 with an upward opening and a round shape; a second sliding block 203 matched with a second sliding groove 202 is arranged at the lower end of the positioning part 201, and the positioning part 201 is matched with the fixing part 200 through the second sliding block 203 and the second sliding groove 202 to be rotatably connected, so that the positioning part 201 can rotate around the fixing part 200; the fixing member 200 and the positioning member 201 are fixed by a second fastener 204; specifically, a second mounting hole 207 in the horizontal direction is formed in the second slider 203, a third mounting hole 208 communicated with the second chute 202 in the horizontal direction is formed in the fixing member 200, and the second fastening member 204 is mounted in the second mounting hole 207 and the third mounting hole 208, so that the positioning member 201 is fixed by the second fastening member 204. In the present embodiment, the second fastening member 204 is a screw or a bolt, and the second mounting hole 207 and the third mounting hole 208 are screw holes.

A third sliding groove 205 with an outward opening is formed in the side wall of the positioning element 201, and a third sliding block 113 matched with the third sliding groove 205 is arranged at the horizontal section of the arc ignition rod 102, so that the arc ignition rod 102 can slide up and down along the third sliding groove 205; the arc striking rod 102 is fixed on the positioning member 201 through a third fastener 206; specifically, a fourth mounting hole 209 communicated with the third sliding groove 205 is formed in the side wall of the positioning member 201, a fifth mounting hole 115 matched with the fourth mounting hole 209 is formed in the horizontal section of the arc ignition rod 102, the third fastening member 205 is installed in the fourth mounting hole 209 and the fifth mounting hole 115, and therefore the arc ignition rod 102 is fixed through the third fastening member 205, in this embodiment, the third fastening member 205 is a screw or a bolt, and the fourth mounting hole 209 and the fifth mounting hole 115 are screw holes.

The lower end of the core rod 100 is provided with an annular electrode 103 matched with the arc ignition rod 102, the annular electrode 103 is sleeved on the core rod 100 and can move along the vertical direction, and the moving distance of the annular electrode 103 along the vertical direction is greater than or equal to the moving distance of the arc ignition rod 102 along the third sliding chute 205.

The arc striking rod 102 can rotate around the core rod 100, the position of the arc striking rod 102 in the vertical direction can be adjusted by adjusting the arc striking rod 102 to move in the third sliding groove 205 along the vertical direction, the position of the annular electrode 103 on the core rod can be adjusted simultaneously, the lower end of the arc striking rod 102 is enabled to be over against the annular electrode 103, the distance change between the annular electrode 103 and the arc striking rod 102 caused by the rotation or movement of the arc striking rod 102 is avoided, and the stable matching between the electrical annular electrode 103 and the arc striking rod 40 is ensured.

Example 2

Referring to fig. 2, 8 and 9, this embodiment is an improvement on embodiment 1, and specifically, the wiring device includes a second fixing seat 107, a first fastening member 108 and an L-shaped first fixing seat 106, the first fixing seat 106 is fixedly connected to the mandrel 100, a first groove 109 with an upward opening is formed at a horizontal end of the first fixing seat 106, and a first sliding groove 110 along a vertical direction is formed at a vertical end of the first fixing seat 106; a second groove 111 with a downward opening is formed in the second fixing seat 107, and the second groove 111 is matched with the first groove 109; a first sliding block 112 matched with the first sliding groove 110 is arranged on the side wall of the second fixed seat 107; the first fixing seat 106 and the second fixing seat 107 are provided with a first mounting hole 114, and the first fastener 108 is mounted in the first mounting hole 114.

In this embodiment, the first fastening member 108 includes a bolt 1081 and a matching nut 1082, and correspondingly, the first fixing base 106 and the second fixing base 107 are provided with a matching first mounting hole 114, and the bolt 1081 is mounted in the first mounting hole 114 and fixed by the nut 1082. Specifically, the number of the first fastening members 108 is two, the first mounting holes 114 are respectively formed at two ends of the first fixing seat 106 and the second fixing seat 107, and the first fastening members 108 are mounted at two ends of the first fixing seat 106 and the second fixing seat 107, so as to fix two ends of the first fixing seat 106 and the second fixing seat 107.

In this embodiment, the bolt 1081 is provided with a compression spring 113, the compression spring 113 is installed between the first fixing seat 106 and the second fixing seat 107, and the compression spring 113 is installed to prevent the first fixing seat 106 and the second fixing seat 107 from colliding with each other in the fastening process.

Example 3

Referring to fig. 2 and 10, the present embodiment is an improvement on embodiment 1, specifically, a fourth chute 105 is disposed on an outer wall of the mandrel 100 and located below the insulator umbrella 101, a fourth slider 104 is disposed on an inner wall of the ring electrode 103, and the fourth slider 104 is mounted in the fourth chute 105, so that the fourth slider 104 can move up and down along the fourth chute 105, that is, the ring electrode 103 can move up and down along the mandrel 100.

The annular electrode 103 is provided with a mounting hole 117 penetrating through the fourth slider 104, the bottom of the fourth chute 105 is provided with a matching mounting hole, and the annular electrode 103 can be fixed on the mandrel 100 by mounting the fourth fastener 116 in the mounting hole.

In this embodiment, the length of the fourth chute 105 is greater than or equal to the distance that the arc ignition rod 102 moves along the third chute 205, so that the lower end of the arc ignition rod 102 faces the ring electrode 103, the situation that the lower end of the arc ignition rod cannot face the ring electrode due to the movement of the arc ignition rod 102 is avoided, and the stable matching between the electric ring electrode and the arc ignition rod is ensured.

The above are merely characteristic embodiments of the present invention, and do not limit the scope of the present invention in any way. All technical solutions formed by equivalent exchanges or equivalent substitutions fall within the protection scope of the present invention.

Claims

1. A column type insulator comprises a core rod (100), wherein an insulator umbrella (101) and an arc striking rod (102) are connected to the core rod (100), a fixing piece (200) and a positioning piece (201) are further arranged on the insulator, the fixing piece (200) is fixedly arranged on the core rod (100), and the positioning piece (201) is sleeved on the core rod (100) and can rotate around the core rod (100); the method is characterized in that: the upper end of the fixing piece (200) is provided with a second sliding chute (202) which is provided with an upward opening and is circular; a second sliding block (203) matched with the second sliding groove (202) is arranged at the lower end of the positioning piece (201), and the positioning piece (201) is matched with the fixing piece (200) through the second sliding block (203) and the second sliding groove (202) to be rotatably connected; the fixing piece (200) and the positioning piece (201) are fixed through a second fastening piece (204); a third sliding groove (205) with an outward opening is formed in the side wall of the positioning piece (201), and a third sliding block (113) matched with the third sliding groove (205) is arranged at the horizontal section of the arc ignition rod (102); the arc striking rod (102) is fixed on the positioning piece (201) through a third fastener (206); the lower end of the core rod (100) is provided with an annular electrode (103) matched with the arc striking rod (102), and the annular electrode (103) is sleeved on the core rod (100) and can move along the vertical direction.

2. The post insulator of claim 1, wherein: the upper end of the core rod (100) is provided with a wiring device, the wiring device comprises a second fixed seat (107), a first fastener (108) and an L-shaped first fixed seat (106), the first fixed seat (106) is fixedly connected with the core rod (100), the horizontal end of the first fixed seat (106) is provided with a first groove (109) with an upward opening, and the vertical end of the first fixed seat (106) is provided with a first sliding groove (110) along the vertical direction; a second groove (111) with a downward opening is formed in the second fixed seat (107), and the second groove (111) is matched with the first groove (109); a first sliding block (112) matched with the first sliding groove (110) is arranged on the side wall of the second fixed seat (107); the first fastener (108) is used for fixing the first fixing seat (106) and the second fixing seat (107).

3. The post insulator of claim 2, wherein: the first fastener (108) comprises a bolt (1081) and a matched nut (1082), first matched mounting holes (114) are formed in the first fixing seat (106) and the second fixing seat (107), and the bolt (1081) is mounted in the first mounting hole (114).

4. A post insulator according to claim 3, wherein: the number of the first fastening pieces (108) is two, the first mounting holes (114) are respectively formed in two ends of the first fixing seat (106) and two ends of the second fixing seat (107), and the first fastening pieces (108) are mounted at two ends of the first fixing seat (106) and two ends of the second fixing seat (107).

5. The post insulator of claim 4, wherein: and a compression spring (113) is arranged on the bolt (1081).

6. The post insulator of claim 1, wherein: the second slider (203) is provided with a second mounting hole (207) in the horizontal direction, the fixing piece (200) is provided with a third mounting hole (208) communicated with the second sliding groove (202) in the horizontal direction, and the second fastener (204) is mounted in the second mounting hole (207) and the third mounting hole (208).

7. The post insulator of claim 1, wherein: be equipped with fourth mounting hole (209) with third spout (205) intercommunication on setting element (201) lateral wall, the horizontal segment of striking stick (102) is equipped with fifth mounting hole (115) that matches with fourth mounting hole (209), third fastener (206) are installed in fourth mounting hole (209) and fifth mounting hole (115).

8. The post insulator of claim 1, wherein: the distance of the annular electrode (103) moving along the vertical direction is larger than or equal to the distance of the arc ignition rod (102) moving along the third sliding chute (205).

9. The post insulator of claim 8, wherein: a fourth sliding groove (105) located below the insulator umbrella (101) is formed in the outer wall of the core rod (100), a fourth sliding block (104) is arranged on the inner wall of the annular electrode (103), the fourth sliding block (104) is installed in the fourth sliding groove (105), and the annular electrode (103) is fixed through a fourth fastener (116).

10. The post insulator of claim 9, wherein: the length of the fourth chute (105) is greater than or equal to the distance the arc ignition bar (102) moves along the third chute (205).