A multi-chamber gap arrester

Abstract

The present invention belongs to the technical field of lightning arresters, and particularly relates to a multi-chamber gap lightning arrester. In the multi-chamber gap lightning arrester of the present invention, the air gap formed between the first discharge ball and the second discharge ball is a main air gap, and the low-voltage end of the fixed gap insulator and the multi-chamber gap lightning arrester body is fixed on the reference plane of the fixing member. When the reference plane is a plane, it can ensure that the low-voltage end of the fixed gap insulator and the multi-chamber gap lightning arrester body is on the same plane, and the fixed gap insulator and the multi-chamber gap lightning arrester body are connected into one by a conductive support member, ensuring that the main air gap cannot be offset under the action of external force, and ensuring the stability of the multi-chamber gap lightning arrester during lightning impulse action.

Description

Technical Field

[0001] The invention belongs to the technical field of lightning arresters, and in particular relates to a multi-chamber gap lightning arrester. Background Art

[0002] At present, multi-chamber gap type line lightning arresters are widely used. They have the characteristics of simple production, large current, no heat accumulation, maintenance-free and long service life. However, with the promotion and application of this lightning arrester, it is found that the distance of the series main air gap will be offset by wind force, movement of the conductor and / or fatigue of the fixing parts. If the offset is too large, it will cause ineffective lightning protection. If the offset is too small, it may even cause line failure.

[0003] In response to the above problems, some fixed-gap multi-chamber series gap arresters have appeared on the market, but their focus is on the arc extinguishing chamber spacing, shed spacing, shed material or discharge gap distance, etc., and they are all fixed-gap arresters with one insulator and one arrester forming a pure air gap, without any supporting connection in the middle. Due to the excessive length of the insulator and the multi-chamber body, the two bodies are deformed when there is a slight external force, thereby offsetting the main air gap. Summary of the invention

[0004] In view of this, the present invention provides a multi-chamber gap arrester, which is used to solve the problem that the main air gap of the existing multi-chamber gap arrester is prone to deviation.

[0005] The specific technical solutions of the present invention are as follows:

[0006] A multi-chamber gap arrester comprises: a gap insulator, a support insulator, a multi-chamber gap arrester body, a conductive support member and a fixing member;

[0007] The support insulator and the multi-chamber gap arrester body are fixed on the fixing member, and the gap insulator and the support insulator form a fixed gap insulator;

[0008] The gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage terminal electrode, an arc-starting rod and a discharge screw, wherein the gap insulator body is sleeved on the first epoxy rod, the high-voltage terminal electrode and the discharge screw are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage terminal electrode is connected to the arc-starting rod, the arc-starting rod and the discharge screw are respectively connected to the first discharge ball and the second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball;

[0009] The multi-chamber gap arrester body and the fixed gap insulator are arranged in parallel up and down, the conductive support connects the fixed gap insulator and the multi-chamber gap arrester body, and the conductive support is used to conduct the discharge of the fixed gap insulator to the multi-chamber gap arrester body.

[0010] Preferably, the centers of gravity of the first discharge ball and the second discharge ball are located in different planes.

[0011] Preferably, the gap insulator and the multi-chamber gap arrester body are axially parallel and the plane formed is parallel to the direction of gravity lines.

[0012] Preferably, the support insulator comprises a second epoxy rod, a support insulator body, a first connecting tube and a second connecting tube;

[0013] The support insulator body is sleeved on the second epoxy rod, the first connecting tube and the second connecting tube are respectively connected to the first end and the second end of the support insulator body, the support insulator is fixed to the fixing member through the first connecting tube, and the support insulator is connected to the gap insulator through the second connecting tube.

[0014] Preferably, a conductive support member crimping hole is provided on the tube wall of the second connecting tube, and the conductive support member is connected to the fixed gap insulator through the conductive support member crimping hole.

[0015] Preferably, the gap insulator further includes a third connecting tube;

[0016] The third connecting tube is sleeved in the second connecting tube, and the walls of the second connecting tube and the third connecting tube are respectively provided with a first discharge screw hole and a second discharge screw hole, and the discharge screw is fixed to the gap insulator through the first discharge screw hole and the second discharge screw hole;

[0017] The high-voltage terminal electrode, the first connecting tube, the second connecting tube and the third connecting tube are all provided with moisture-proof rings.

[0018] Preferably, the supporting insulator is a porcelain cross-arm insulator or a composite sheath insulator.

[0019] Preferably, the support insulator is a porcelain cross-arm insulator, and the conductive support is connected to the support insulator via a clamp and a clamp adapter plate;

[0020] The clamp is of a U-shaped structure, the clamp adapter plate is of a T-shaped structure, and the clamp adapter plate is bolted to connect the clamp and the conductive support member.

[0021] Preferably, the support insulator is a composite jacket insulator, and the conductive support is connected to the support insulator via a straight plate fitting;

[0022] The straight plate hardware bolts connect the support insulator and the conductive support member.

[0023] Preferably, the fixed gap insulator is an integrally formed structure.

[0024] In summary, the present invention provides a multi-chamber gap arrester, comprising: a gap insulator, a support insulator, a multi-chamber gap arrester body, a conductive support and a fixing member; the support insulator and the multi-chamber gap arrester body are fixed on the fixing member, and the gap insulator and the support insulator form a fixed gap insulator; the gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage terminal electrode, an arc-starting rod and a discharge screw, the gap insulator body is sleeved on the first epoxy rod, the high-voltage terminal electrode and the discharge screw are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage terminal electrode is connected to the arc-starting rod, the arc-starting rod and the discharge screw are respectively connected to the first discharge ball and the second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball; the multi-chamber gap arrester body and the fixed gap insulator are arranged in parallel up and down, the conductive support member connects the fixed gap insulator and the multi-chamber gap arrester body, and the conductive support member is used to conduct the discharge of the fixed gap insulator to the multi-chamber gap arrester body.

[0025] In the present invention, the air gap formed between the first discharge ball and the second discharge ball is the main air gap, and the low-voltage ends of the fixed-gap insulator and the multi-chamber gap arrester body are fixed on the reference plane of the fixing member. When the reference plane is a plane, it can ensure that the low-voltage ends of the fixed-gap insulator and the multi-chamber gap arrester body are on the same plane. The fixed-gap insulator and the multi-chamber gap arrester body are connected into one by a conductive support member, ensuring that the main air gap cannot be offset under the action of external force, thereby ensuring the stability of the multi-chamber gap arrester during lightning impulse action. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic structural diagram of a multi-chamber gap arrester provided in a first embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of a fixed gap insulator in a multi-chamber gap arrester provided in the first embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a gap insulator in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a multi-chamber gap lightning arrester body in a multi-chamber gap lightning arrester provided in an embodiment of the present invention;

[0031] Figure 5 It is a schematic structural diagram of a conductive support member in a multi-chamber gap arrester provided in a first embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of a fixing member in a multi-chamber gap arrester provided in the first embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of a supporting insulator body in a multi-chamber gap arrester provided in a first embodiment of the present invention;

[0034] Figure 8 It is a schematic structural diagram of a second epoxy rod in a multi-chamber gap arrester provided in the first embodiment of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of a first connecting pipe in a multi-chamber gap arrester provided in the first embodiment of the present invention;

[0036] Fig.10 It is a structural schematic diagram of a second connecting pipe in a multi-chamber gap arrester provided in the first embodiment of the present invention;

[0037] Fig.11 A schematic diagram of the structure of a high-voltage terminal electrode in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0038] Fig.12 A schematic structural diagram of an arc-starting rod in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0039] Fig.13 It is a structural schematic diagram of a third connecting pipe in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0040] Fig.14 It is a structural schematic diagram of a discharge screw in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0041] Fig.15 A schematic structural diagram of a gap insulator body in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0042] Fig.16 It is a schematic structural diagram of a first epoxy rod in a multi-chamber gap arrester provided in an embodiment of the present invention;

[0043] Fig.17 A schematic structural diagram of a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0044] Fig.18 A schematic structural diagram of a support insulator in a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0045] Fig.19 It is a schematic structural diagram of a conductive support member in a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0046] Fig. 20 A schematic structural diagram of a fixing member in a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0047] Fig.21 It is a schematic structural diagram of a clamp in a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0048] Fig. 22 It is a structural schematic diagram of a clamp adapter plate in a multi-chamber gap arrester provided in a second embodiment of the present invention;

[0049] Fig.23 A schematic structural diagram of a multi-chamber gap arrester provided in a third embodiment of the present invention;

[0050] Fig.24 A schematic structural diagram of a support insulator in a multi-chamber gap arrester provided in a third embodiment of the present invention;

[0051] Fig.25 It is a schematic structural diagram of a straight plate fitting in a multi-chamber gap arrester provided in a third embodiment of the present invention;

[0052] Illustration Description:

[0053] 1. Support insulator; 11. Support insulator body; 12. Second epoxy rod; 13. First connecting tube; 14. Second connecting tube; 131. Moisture-proof ring; 132. Second epoxy rod crimping hole; 133. First installation fixing hole; 141. Moisture-proof ring; 142. Conductive support crimping hole; 143. Through hole; 144. First discharge screw hole;

[0054] 2. Gap insulator; 21. High-voltage terminal electrode; 22. Arc-starting rod; 23. Third connecting tube; 24. Discharge screw; 25. Air gap; 26. Gap insulator body; 27. First epoxy rod; 211. Arc-starting rod crimping hole; 212. First epoxy rod crimping hole; 213. Moisture-blocking ring; 221. First discharge ball; 231. Moisture-blocking ring; 232. Third epoxy rod crimping hole; 233. Second discharge screw hole; 234. Second mounting fixing hole; 241. Mounting thread; 242. Connector; 243. Second discharge ball;

[0055] 3. Fixing parts; 4. Conductive support parts; 5. Multi-chamber gap arrester body; 6. Fixing parts; 7. Clamp; 8. Clamp adapter plate; 9. Conductive support parts; 10. Support insulator; 15. Support insulator; 16. Straight plate hardware. DETAILED DESCRIPTION

[0056] The invention provides a multi-chamber gap arrester, which is used to solve the problem that the main air gap of the existing multi-chamber gap arrester is prone to deviation.

[0057] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0058] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0059] See also Figures 1 to 16 , a first embodiment of a multi-chamber gap arrester provided in an embodiment of the present invention comprises: a gap insulator 2, a support insulator 1, a multi-chamber gap arrester body 5, a conductive support member 4 and a fixing member 3;

[0060] The support insulator 1 and the multi-chamber gap arrester body 5 are fixed on the fixing member 3, and the gap insulator 2 and the support insulator 1 form a fixed gap insulator;

[0061] The gap insulator 2 comprises a first epoxy rod 27, a gap insulator body 26, a high-voltage terminal electrode 21, an arc-starting rod 22 and a discharge screw 24. The gap insulator body 26 is sleeved on the first epoxy rod 27. The high-voltage terminal electrode 21 and the discharge screw 24 are respectively arranged at the first end and the second end of the first epoxy rod 27. The high-voltage terminal electrode 21 is connected to the arc-starting rod 22. The arc-starting rod 22 and the discharge screw 24 are respectively connected to the first discharge ball 221 and the second discharge ball 243. An air gap 25 is formed between the first discharge ball 221 and the second discharge ball 243.

[0062] The multi-chamber gap arrester body 5 and the fixed gap insulator are arranged in parallel up and down, and the conductive support 4 connects the fixed gap insulator and the multi-chamber gap arrester body 5 . The conductive support 4 is used to conduct the discharge of the fixed gap insulator to the multi-chamber gap arrester body 5 .

[0063] In the embodiment of the present invention, the air gap 25 formed between the first discharge ball 221 and the second discharge ball 243 is an air gap, and the low-voltage ends of the fixed gap insulator and the multi-chamber gap arrester body 5 are fixed on the reference plane of the fixing member 3. When the reference plane is a plane, it can ensure that the low-voltage ends of the fixed gap insulator and the multi-chamber gap arrester body 5 are on the same plane, and the fixed gap insulator and the multi-chamber gap arrester body 5 are connected into one by the conductive support member 4, ensuring that the air gap cannot be offset under the action of external force, thereby ensuring the stability of the multi-chamber gap arrester during lightning impulse action.

[0064] Furthermore, the low voltage ends of the fixed gap insulator and the multi-chamber gap arrester body 5 can be fixed on the reference plane of the fixing member 3 by fasteners.

[0065] In the embodiment of the present invention, the centers of gravity of the first discharge ball 221 and the second discharge ball 243 are located in different planes, thereby avoiding the hidden danger that the discharge gap cannot be formed due to the rainwater being connected into a line.

[0066] In the embodiment of the present invention, the gap insulator 2 and the multi-chamber gap arrester body 5 are axially parallel and the plane formed is parallel to the gravity line direction. When the multi-chamber gap arrester is used, looking down from the air, the whole device is designed as a vertical integration, and a falling bird will not bridge between the gap insulator 2 and the multi-chamber gap arrester body 5, which can avoid the risk of short circuit or nesting caused by falling birds.

[0067] In the embodiment of the present invention, the high-voltage terminal electrode 21 is provided with a moisture-proof ring 213 and is provided with an arc-starting rod crimping hole 211 and a first epoxy rod crimping hole 212. The diameter of the high-voltage terminal electrode 21 is preferably φ26-40 mm, the length of the high-voltage terminal electrode 21 is preferably 44-90 mm, the outer diameter of the moisture-proof ring 213 is preferably φ22-30 mm, and the surface of the high-voltage terminal electrode 21 is preferably roughened; the diameter of the first epoxy rod crimping hole 212 is preferably φ14.1-25.1 mm, the depth of the first epoxy rod crimping hole 212 is preferably 10-30 mm, the diameter of the arc-starting rod crimping hole 211 is preferably φ6.1-14.1 mm, and the depth of the arc-starting rod crimping hole 211 is preferably 12-25 mm. The arc-starting rod 22 and the high-voltage terminal electrode 21 can be tightly crimped together by a crimping machine to ensure that the center line of the arc-starting rod 22 is horizontally aligned with the center line of the arc-starting rod crimping hole 211 vertically, so that the arc-starting rod 22 It is perpendicular to the horizontal direction of the gap insulator 2. The gravity centers of the third connecting tube 23 and the arc-starting rod 22 are not on the same plane, thus avoiding the hidden dangers of power grid failure caused by nesting birds and rainwater forming lines.

[0068] In the embodiment of the present invention, the support insulator 1 includes a second epoxy rod 12, a support insulator body 11, a first connecting tube 13 and a second connecting tube 14;

[0069] The support insulator body 11 is sleeved on the second epoxy rod 12, the first connecting tube 13 and the second connecting tube 14 are respectively connected to the first end and the second end of the support insulator body 11, the support insulator 1 is fixed to the fixing member 3 through the first connecting tube 13, and the support insulator 1 is connected to the gap insulator 2 through the second connecting tube 14.

[0070] In the embodiment of the present invention, a conductive support member crimping hole 142 is provided on the tube wall of the second connecting tube 14 , and the conductive support member 4 is connected to the fixed gap insulator through the conductive support member crimping hole 142 .

[0071] In the embodiment of the present invention, the gap insulator 2 further includes a third connecting tube 23;

[0072] The third connecting tube 23 is sleeved in the second connecting tube 14. The walls of the second connecting tube 14 and the third connecting tube 23 are respectively provided with a first discharge screw hole 144 and a second discharge screw hole 233. The discharge screw 24 is fixed to the gap insulator 2 through the first discharge screw hole 144 and the second discharge screw hole 233.

[0073] The high voltage terminal electrode 21 , the first connecting tube 13 , the second connecting tube 14 and the third connecting tube 23 are all provided with moisture-proof rings.

[0074] In the embodiment of the present invention, the first connecting tube 13 is a low-voltage end, the outer diameter of the supporting insulator body 11 is preferably φ20-35 mm, the total length of the supporting insulator body 11 is preferably 220-400 mm, the supporting insulator body 11 is preferably evenly distributed with 3-6 sheds, and the outer diameter of the shed is preferably φ54-65 mm, the thickness of the shed is preferably 1.5-3 mm, the front and rear ends of the supporting insulator body 11 are provided with sealing silicone rubber as a moisture-proof ring, and the outer diameter of the sealing silicone rubber is preferably φ32-46 mm, and the thickness of the sealing silicone rubber is preferably 10-35 mm;

[0075] The diameter of the second epoxy rod 12 is preferably φ14-25 mm, and the length of the second epoxy rod 12 is preferably 360-530 mm. The first connecting tube 13 is provided with a moisture-blocking ring 131, and the outer diameter of the moisture-blocking ring 131 is preferably φ22-30 mm. The moisture-blocking ring 131 is preferably a sealing silicone rubber. The surface of the first connecting tube 13 is preferably roughened to increase the friction between the sealing silicone rubber and the surface of the first connecting tube 13, which can effectively prevent the sealing silicone rubber from peeling off and forming a gap between the surface of the first connecting tube 13. The moisture-blocking ring 131 can prevent moisture in the air from entering the fixed insulator body;

[0076] The first connecting tube 13 is provided with a second epoxy rod crimping hole 132 and a first installation and fixing hole 133. The diameter of the second epoxy rod crimping hole 132 is preferably φ14.1-25.1 mm, the depth of the second epoxy rod crimping hole 132 is preferably 20-35 mm, and the diameter of the first installation and fixing hole 133 is preferably 6-16 mm. One end of the second epoxy rod 12 and the second epoxy rod crimping hole 132 of the first connecting tube 13 can be crimped into one piece by a crimping machine.

[0077] The outer diameter of the first connecting pipe 13 is preferably φ26 to 40 mm, and the length of the first connecting pipe 13 is preferably 40 to 80 mm.

[0078] In the embodiment of the present invention, the second connecting tube 14 is provided with a moisture-proof ring 141 and is provided with a conductive support crimping hole 142, a through hole 143 and a first discharge screw hole 144;

[0079] The outer diameter of the first connecting pipe 13 is preferably φ26-40 mm, and the length is preferably 63-138 mm;

[0080] The outer diameter of the moisture barrier ring 141 is preferably φ22-30 mm, and the surface of the first connecting pipe 13 is preferably roughened;

[0081] The diameter of the conductive support crimping hole 142 is preferably φ6.1 to 14.1 mm, and the depth is preferably 12 to 25 mm;

[0082] The diameter of the through hole 143 is preferably φ14.1-25.1 mm. The conductive support crimping hole 142 and the conductive support 4 can be crimped into one piece by a crimping machine, and the two ends of the through hole 143 can be crimped together by the crimping machine to tightly crimp the second epoxy rod 12, and one end face of the second connecting tube 14 is fixed at a distance of 90-360 mm from the upper end of the first connecting tube 13;

[0083] Furthermore, the thread of the first discharge screw hole 144 is preferably M5-M10.

[0084] In the embodiment of the present invention, the diameter of the arc-starting rod 22 is preferably φ6-14 mm;

[0085] The diameter of the first discharge ball 221 is preferably φ6-30 mm;

[0086] Furthermore, the outer surface of the arc-starting rod 22 is preferably vulcanized and coated with rubber by a mold alone, and the thickness of the rubber coating is preferably 1.5 to 4 mm, so as to ensure that the first discharge ball 221 is exposed to the air;

[0087] The arc-starting rod 22 and the high-voltage terminal electrode 21 can be tightly crimped together by a crimping machine to ensure that when the center line of the arc-starting rod 22 is horizontally aligned with the center line of the arc-starting rod crimping hole 211, an air gap 25 is formed between the first discharge ball 221 and the second discharge ball 243 of the discharge screw 24;

[0088] Furthermore, when the gap insulator 22 is installed, the center line of the arc-starting rod 22 is horizontally flush with the horizon, thereby avoiding the hidden dangers of power grid failure caused by nesting birds and the hidden dangers of rainwater forming lines.

[0089] Preferably, the distance of the air gap 25 is preferably 30 mm to 50 mm.

[0090] In the embodiment of the present invention, the third connecting tube 23 is a low-voltage end electrode, and the third connecting tube 23 is provided with a moisture-proof ring 231 and is provided with a third epoxy rod crimping hole 232, a second discharge screw hole 233 and a second installation fixing hole 234;

[0091] The third connecting pipe 23 preferably has an outer diameter of φ26-40 mm and a length of 40-80 mm;

[0092] The outer diameter of the moisture-blocking ring 231 is preferably φ22-30 mm, and the surface of the third connecting pipe 23 is preferably roughened;

[0093] The diameter of the third epoxy rod crimping hole 232 is preferably φ14.1-25.1 mm, and the depth is preferably 20-35 mm;

[0094] The thread of the second discharge screw hole 233 is preferably M5-M10;

[0095] The diameter of the second mounting and fixing hole 234 is preferably 6 to 16 mm;

[0096] The discharge screw 24 includes a mounting thread 241 , a connecting piece 242 and a second discharge ball 243 . The discharge screw 24 can be tightened onto the third connecting tube 23 through the connecting piece 242 .

[0097] In the embodiment of the present invention, the outer diameter of the gap insulator body 26 is preferably φ20-35 mm, the total length of the gap insulator body 26 is preferably 90-190 mm, the gap insulator body 26 is preferably evenly distributed with 2-4 sheds, and the outer diameter of the shed is preferably φ54-95 mm, and the thickness of the shed is preferably 1.5-3 mm. The front and rear ends of the gap insulator body 26 are provided with sealing silicone rubber as a moisture-proof ring, and the outer diameter of the sealing silicone rubber is preferably φ32-46 mm, and the thickness of the sealing silicone rubber is preferably 10-35 mm;

[0098] The diameter of the first epoxy rod 27 is preferably φ14-25 mm, and the length of the first epoxy rod 27 is preferably 100-180 mm.

[0099] The multi-chamber gap arrester of the embodiment of the present invention adopts the above-mentioned gap insulator 2, and adds a conductive support member 4 between the fixed gap insulator and the multi-chamber arrester body to ensure that the air gap cannot be offset under the action of external force, thereby ensuring the stability of the multi-chamber gap arrester during lightning impulse action and avoiding the air gap distance from being offset due to wind deviation, conductor dancing, hardware fatigue, etc.

[0100] The multi-chamber gap arrester of the embodiment of the present invention can effectively reduce the hidden danger of power grid failure caused by nesting birds during field operation by setting the installation direction of the arc-starting rod 22;

[0101] During long-term operation on site, moisture will slowly penetrate along the silicone rubber and the outside of the hardware due to air humidity, rainwater erosion and rubber aging, weakening the insulation strength of the insulator and even causing insulator failure. The multi-chamber gap arrester of the embodiment of the present invention is provided with moisture-blocking rings on the high-voltage terminal electrode 21, the first connecting tube 13, the second connecting tube 14 and the third connecting tube 23 to effectively prevent moisture from penetrating.

[0102] In the multi-chamber gap arrester of the embodiment of the present invention, the fixed gap insulator can be a split type or an integrally formed structure, the gap insulator 2 and the support insulator 1 can be completely independent of each other, and the gap insulator 2 can be combined with various types of support insulators 1 to facilitate structural conversion and adapt to complex on-site installation environments.

[0103] In the embodiment of the present invention, the two ends of the first epoxy rod 27 can be respectively pressed with the high-voltage end electrode 21 and the third connecting tube 23 to form a whole, and after being independently manufactured and formed in the vulcanizer mold, the arc-starting rod 22 is pressed with the arc-starting rod crimping hole 211 of the high-voltage end electrode 21, and then the discharge screw 24 is tightened in the second discharge screw hole 233 of the third connecting tube 23, so that the second discharge ball 243 of the discharge screw 24 and the first discharge ball 221 of the arc-starting rod 22 are ensured to be within a distance of 30 to 50 mm, forming a fixed air gap 25.

[0104] The multi-chamber gap arrester according to the embodiment of the present invention can be used for overvoltage protection of power system transmission and distribution lines, and can be used as a 10kV multi-chamber gap arrester for various line insulators.

[0105] In the embodiment of the present invention, the support insulator 1 and the gap insulator 2 can be formed into a whole in one vulcanizing machine mold at one time, and the vulcanizing machine mold can also produce the gap insulator 2 separately.

[0106] The support insulator 1 and the gap insulator 2 can be produced in different structures according to the characteristics of the actual 10kV overhead line insulators on site, the tower structure, user needs and other factors, and connected with the 10kV multi-chamber gap arrester body 5 to form a variety of installation structures. The support insulator 1 and the gap insulator 2 can be formed into a whole by crimping, and connected with the 10kV multi-chamber gap arrester body 5 to form an overall lightning protection device with a fixed external series gap; the support insulator 1 and the gap insulator 2 can also be molded separately to form two independent components, and through different connection methods with the 10kV overhead line insulators on site, various lightning protection devices with fixed external series gaps are formed.

[0107] The multi-chamber gap arrester in the embodiment of the present invention fully considers that there is no fixed support between the fixed gap insulator and the multi-chamber gap arrester body 5, which can ensure that the air gap is not easily offset, reduce the risk of bird nesting, avoid the occurrence of rainwater connection conditions, and has high engineering application value.

[0108] The above is a detailed description of the first embodiment of a multi-chamber gap arrester provided by an embodiment of the present invention. The following is a detailed description of the second embodiment of a multi-chamber gap arrester provided by an embodiment of the present invention.

[0109] See also Figures 17 to 22 In a second embodiment of a multi-chamber gap arrester provided by an embodiment of the present invention, the support insulator 10 is a porcelain cross-arm insulator, and the conductive support member 9 is connected to the support insulator 10 through a clamp 7 and a clamp adapter plate 8;

[0110] The clamp 7 is a U-shaped structure, the clamp adapter plate 8 is a T-shaped structure, and the clamp adapter plate 8 is bolted to connect the clamp 7 and the conductive support 9. Fig. 20 The rest is the same as the first embodiment and will not be described in detail here.

[0111] The above is a detailed description of the second embodiment of a multi-chamber gap arrester provided by an embodiment of the present invention. The following is a detailed description of the third embodiment of a multi-chamber gap arrester provided by an embodiment of the present invention.

[0112] See also Figure 23 to Figure 25 In a third embodiment of a multi-chamber gap arrester provided by an embodiment of the invention, the support insulator 15 is a composite jacket insulator, and the conductive support member 9 is connected to the support insulator 15 through a straight plate fitting 16;

[0113] The straight plate fitting 16 is bolted to connect the supporting insulator 15 and the conductive support member 9. The rest is the same as the first embodiment and will not be described in detail here.

[0114] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-chamber gap arrester, characterized in that: include: Gap insulators, support insulators, multi-chamber gap arrester bodies, conductive supports and fixings; The support insulator and the multi-chamber gap arrester body are fixed on the fixing member, and the gap insulator and the support insulator form a fixed gap insulator; The gap insulator comprises a first epoxy rod, a gap insulator body, a high-voltage terminal electrode, an arc-starting rod and a discharge screw, wherein the gap insulator body is sleeved on the first epoxy rod, the high-voltage terminal electrode and the discharge screw are respectively arranged at the first end and the second end of the first epoxy rod, the high-voltage terminal electrode is connected to the arc-starting rod, the arc-starting rod and the discharge screw are respectively connected to the first discharge ball and the second discharge ball, and an air gap is formed between the first discharge ball and the second discharge ball; The multi-chamber gap arrester body and the fixed gap insulator are arranged in parallel up and down, the conductive support connects the fixed gap insulator and the multi-chamber gap arrester body, and the conductive support is used to conduct the discharge of the fixed gap insulator to the multi-chamber gap arrester body; The first discharge ball and the second discharge ball are arranged in a staggered manner in space, so that the line connecting them is neither parallel nor perpendicular to the horizontal plane, and is neither parallel nor perpendicular to the direction of the gravity line.

2. The multi-chamber gap arrester according to claim 1, characterized in that: The gap insulator and the multi-chamber gap arrester body are axially parallel and the plane formed by them is parallel to the direction of gravity lines.

3. The multi-chamber gap arrester according to claim 1, characterized in that: The support insulator comprises a second epoxy rod, a support insulator body, a first connecting tube and a second connecting tube; The support insulator body is sleeved on the second epoxy rod, the first connecting tube and the second connecting tube are respectively connected to the first end and the second end of the support insulator body, the support insulator is fixed to the fixing member through the first connecting tube, and the support insulator is connected to the gap insulator through the second connecting tube.

4. The multi-chamber gap arrester according to claim 3, characterized in that: A conductive support crimping hole is provided on the tube wall of the second connecting tube, and the conductive support is connected to the fixed gap insulator through the conductive support crimping hole.

5. The multi-chamber gap arrester according to claim 3, characterized in that: The gap insulator further includes a third connecting tube; The third connecting tube is sleeved in the second connecting tube, and the walls of the second connecting tube and the third connecting tube are respectively provided with a first discharge screw hole and a second discharge screw hole, and the discharge screw is fixed to the gap insulator through the first discharge screw hole and the second discharge screw hole; The high-voltage terminal electrode, the first connecting tube, the second connecting tube and the third connecting tube are all provided with moisture-proof rings.

6. The multi-chamber gap arrester according to claim 1, characterized in that: The supporting insulator is a porcelain cross-arm insulator or a composite jacket insulator.

7. The multi-chamber gap arrester according to claim 6, characterized in that: The supporting insulator is a porcelain cross-arm insulator, and the conductive support is connected to the supporting insulator via a clamp and a clamp adapter plate; The clamp is of a U-shaped structure, the clamp adapter plate is of a T-shaped structure, and the clamp adapter plate is bolted to connect the clamp and the conductive support member.

8. The multi-chamber gap arrester according to claim 6, characterized in that: The supporting insulator is a composite jacket insulator, and the conductive support is connected to the supporting insulator through a straight plate fitting; The straight plate hardware bolts connect the support insulator and the conductive support member.

9. The multi-chamber gap arrester according to claim 1, characterized in that: The fixed gap insulator is an integrally formed structure.

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