Lightning arrester
By coating the outer wall of the surge arrester's conductive rod with a nylon and rubber flame-retardant layer, the problem of the surge arrester burning in a high-temperature electric arc environment is solved, achieving higher flame-retardant performance.
Patent Information
- Application Number
- CN202422640049.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing surge arresters have poor flame-retardant properties in high-temperature arc environments and cannot effectively prevent product combustion.
The outer wall of the surge arrester's conductive rod is sequentially covered with a first flame-retardant layer of nylon material and a second flame-retardant layer of rubber material to enhance the surge arrester's flame-retardant performance.
It effectively prevents the surge arrester from burning in a high-temperature electric arc environment and improves the overall flame-retardant performance of the surge arrester.
Smart Images
Figure CN223808973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of high-voltage electric technology, in particular to a lightning arrester. BACKGROUND
[0002] With the increasing application of electrical cabinets, the voltage level of the electrical cabinets is higher and higher, and the operating pressure of the equipment and cable accessories in the electrical cabinets is greater and greater. The lightning arrester plays an important protective role in the electrical cabinet. In the lightning arrester standards at home and abroad, a large current short circuit test index is often used to simulate the situation when the lightning arrester passes through a large current after failure. A large number of test results show that the arc and violent explosion will be caused when the lightning arrester passes through a large current after failure. The existing lightning arrester has poor flame retardant performance and cannot effectively prevent the product from burning in a high-temperature arc environment. CONTENT OF THE UTILITY MODEL
[0003] The utility model discloses a lightning arrester, including the casing, be equipped with the terminal and the connecting rod that is connected with terminal in casing, the connecting rod includes the electrically conductive pole and the first flame -retardant layer and the second flame -retardant layer that are covered in the first flame -retardant layer and the second flame -retardant layer outer wall of electrically conductive pole in proper order.
[0004] Optionally, in an embodiment of the utility model, the first flame -retardant layer is nylon material first flame -retardant layer.
[0005] Optionally, in an embodiment of the utility model, the second flame -retardant layer is rubber material second flame -retardant layer.
[0006] Optionally, in an embodiment of the utility model, the electrically conductive pole includes first electrode and second electrode, still be equipped with the core between first electrode and second electrode, the core is formed by a plurality of resistance sheet.
[0007] Optionally, in an embodiment of the utility model, the resistance sheet is zinc oxide material resistance sheet.
[0008] Optionally, in an embodiment of the utility model, the first electrode outer wall is provided with first lug, and the second electrode outer wall is provided with second lug, and the first flame -retardant layer is located between the first lug and the second lug and covers the core.
[0009] Optionally, in an embodiment of the utility model, the second flame -retardant layer covers the outer wall of the first lug, the first flame -retardant layer and the second lug.
[0010] Optionally, in an embodiment of the utility model, the first electrode has a first end portion at an end away from the second electrode, the second electrode has a second end portion at an end away from the first electrode, and the second flame -retardant layer is flush with the first end portion at an end away from the second electrode, and the second flame -retardant layer wraps the second end portion at an end away from the first electrode.
[0011] Optionally, in an embodiment of the utility model, first connecting hole is additionally arranged on the first electrode, the terminal is inserted into the first connecting hole to be electrically connected with the first electrode, and the end of the conductive rod away from the first electrode is additionally provided with a second connecting hole penetrating into the second electrode.
[0012] Optionally, in an embodiment of the utility model, the terminal comprises a first connecting part and a second connecting part, a connecting disc is arranged between the first connecting part and the second connecting part, the first connecting part is connected with the cable, and the second connecting part is inserted into the first connecting hole to make the connecting disc abut against the first end part.
[0013] Optionally, in an embodiment of the utility model, the shell comprises a connecting part and a rod part, one end of the connecting rod is arranged in the rod part and connected with the terminal, and the other end of the connecting rod extends out of the rod part.
[0014] Optionally, in an embodiment of the utility model, the shell is a rubber material shell.
[0015] The connecting rod in the lightning arrester comprises a conductive rod and a first fire-retardant layer and a second fire-retardant layer successively coated on the outer wall of the conductive rod, the first fire-retardant layer and the second fire-retardant layer are successively coated on the outer wall of the conductive rod to improve the fire-retardant performance of the lightning arrester and effectively prevent the product from burning in a high-temperature arc environment. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.
[0017] Figure 1 It is a front structure schematic view of an embodiment of the utility model lightning arrester;
[0018] Figure 2 It is a side structure schematic view of an embodiment of the utility model lightning arrester;
[0019] Figure 3 It is Figure 2 It is a section view along A-A;
[0020] Figure 4 It is a section view of an embodiment of the utility model connecting rod.
[0021] EXPLANATION OF DRAWINGS:
[0022] 100, lightning arrester; 11, shell; 111, connecting part; 112, rod part; 12, terminal; 121, first connecting part; 122, connecting disc; 123, second connecting part; 13, connecting rod; 131, first flame-retardant layer; 132, second flame-retardant layer; 133, conductive rod; 1331, first electrode; 1332, core body; 1333, second electrode; 1334, first protruding ring; 1335, second protruding ring; 1336, first end part; 1337, second end part; 1338, first connecting hole; 1339, second connecting hole.
[0023] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.
[0026] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" in the full text includes three schemes, taking A and / or B as an example, including A technical scheme, B technical scheme, and A and B simultaneously satisfying the technical scheme; in addition, the technical schemes of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical schemes appears contradictory or unachievable, it should be considered that the combination of technical schemes does not exist, and is not within the protection scope required by the utility model.
[0027] With the application of electrical cabinet more and more, the voltage grade of electrical cabinet is higher and higher, the operation pressure of the equipment and cable accessories in the electrical cabinet is bigger and bigger. The lightning arrester plays an important role in the protection of electrical cabinet. In the lightning arrester standards at home and abroad, a large current short circuit test index is often used to simulate the scene when the lightning arrester passes through a large current after failure. A large number of test results show that when the lightning arrester passes through a large current after failure, arc and violent explosion will be caused. The existing lightning arrester has poor flame retardant performance and cannot effectively prevent the product from burning in a high temperature arc environment.
[0028] Therefore, the connecting rod 13 in the lightning arrester 100 comprises a conductive rod 133 and a first flame retardant layer 131 and a second flame retardant layer 132 which are sequentially coated on the outer wall of the conductive rod 133. By sequentially coating the first flame retardant layer 131 and the second flame retardant layer 132 on the outer wall of the conductive rod 133, the flame retardant performance of the lightning arrester 100 is improved, and the product is effectively prevented from burning in a high temperature arc environment.
[0029] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the drawings.
[0030] As shown in Figures 1-4 The lightning arrester 100 comprises a shell 11, the shell 11 is provided with a terminal 12 and a connecting rod 13 connected with the terminal 12; the connecting rod 13 comprises a conductive rod 133 and a first flame retardant layer 131 and a second flame retardant layer 132 which are sequentially coated on the outer wall of the conductive rod 133.
[0031] It can be understood that the lightning arrester 100 comprises a shell 11, the shell 11 is provided with a terminal 12 and a connecting rod 13 connected with the terminal 12, the terminal 12 is preferably made of metal material to have good conductivity. One end of the terminal 12 is connected with the cable, and the other end of the terminal 12 is connected with the connecting rod 13. The connecting rod 13 comprises a conductive rod 133 and a first flame retardant layer 131 and a second flame retardant layer 132 which are sequentially coated on the outer wall of the conductive rod 133, wherein the terminal 12 is connected with the conductive rod 133 to transmit the electric energy on the cable to the conductive rod 133 or transmit the electric energy on the conductive rod 133 to the cable. By coating the first flame retardant layer 131 on the outer wall of the conductive rod 133 and coating the second flame retardant layer 132 on the outer wall of the first flame retardant layer 131, the flame retardant performance of the entire connecting rod 13 is improved, and the product is effectively prevented from burning in a high temperature arc environment.
[0032] Further, in an embodiment of the utility model, the first flame retardant layer 131 is a nylon material first flame retardant layer 131. Preferably, the second flame retardant layer 132 is a rubber material second flame retardant layer 132.
[0033] It can be understood that the first flame-retardant layer 131 is coated with nylon material outside the conductive rod 133, and the second flame-retardant layer 132 is coated with rubber material outside the first flame-retardant layer 131. Through the cooperation of the first flame-retardant layer 131 of nylon material and the second flame-retardant layer 132 of rubber material, the overall flame-retardant performance of the connecting rod 13 is further enhanced.
[0034] Further, in an embodiment of the utility model, the conductive rod 133 includes first electrode 1331 and second electrode 1333, still be equipped with core 1332 between first electrode 1331 and second electrode 1333, core 1332 is formed by a plurality of resistance sheet.
[0035] It can be understood that the first electrode 1331, the second electrode 1333 are made of metal material, so that the entire conductive rod 133 has good conductivity. Preferably, the first electrode 1331 and the second electrode 1333 are both made of aluminum. Preferably, the resistance sheet is a zinc oxide material resistance sheet.
[0036] Further, in an embodiment of the utility model, the first electrode 1331 is provided with a first protruding ring 1334 on the outer wall, the second electrode 1333 is provided with a second protruding ring 1335 on the outer wall, and the first flame-retardant layer 131 is arranged between the first protruding ring 1334 and the second protruding ring 1335 and covers the core 1332.
[0037] It can be understood that, as shown in Figures 3-4 By providing the first protruding ring 1334 on the outer wall of the first electrode 1331 and the second protruding ring 1335 on the outer wall of the second electrode 1333, the first protruding ring 1334, the outer wall of the core 1332 and the second protruding ring 1335 form a groove, and the first flame-retardant layer 131 can be formed in the groove, not only realizing the full coverage of the outer surface of the core 1332 by the first flame-retardant layer 131, but also limiting the first flame-retardant layer 131 in the groove to prevent the first flame-retardant layer 131 from falling off.
[0038] Further, in an embodiment of the utility model, the second flame-retardant layer 132 covers the outer wall of the first protruding ring 1334, the first flame-retardant layer 131 and the second protruding ring 1335.
[0039] It can be understood that, by covering the second flame-retardant layer 132 on the outer wall of the first protruding ring 1334, the first flame-retardant layer 131 and the second protruding ring 1335, the second flame-retardant layer 132 is completely coated on the outer wall of the first flame-retardant layer 131, which not only improves the flame retardancy, but also further prevents the first flame-retardant layer 131 from falling off.
[0040] Further, in an embodiment of the utility model, the first electrode 1331 has a first end 1336 away from one end of the second electrode 1333, the second electrode 1333 has a second end 1337 away from one end of the first electrode 1331, and the second flame-retardant layer 132 is flush with the first end 1336 away from one end of the second electrode 1333. The second flame-retardant layer 132 wraps the second end 1337 away from one end of the first electrode 1331.
[0041] It can be understood that the second flame-retardant layer 132 is flush with the first end 1336 away from one end of the second electrode 1333, so that the first end 1336 can be conductively connected with the terminal 12, and the contact area between the terminal 12 and the first electrode 1331 is increased. The second flame-retardant layer 132 wraps the second end 1337 away from one end of the first electrode 1331, so that the tightness between the conductive rod 133, the second flame-retardant layer 132 and the first flame-retardant layer 131 is improved, and the conductive rod 133 and the first flame-retardant layer 131 are prevented from being separated from the second flame-retardant layer 132.
[0042] Further, in an embodiment of the utility model, the first electrode 1331 is further provided with a first connecting hole 1338, the terminal 12 is inserted into the first connecting hole 1338 to be conductively connected with the first electrode 1331, and the conductive rod 133 is further provided with a second connecting hole 1339 penetrating into the second electrode 1333 away from one end of the first electrode 1331.
[0043] It can be understood that the first connecting hole 1338 is arranged on the first electrode 1331, and the second connecting hole 1339 is arranged on the second electrode 1333, so that the terminal 12 is conductively connected with the first electrode 1331 through the first connecting hole 1338, and other electrical elements are also conductively connected with the second electrode 1333 through the second connecting hole 1339. Preferably, the first connecting hole 1338 and / or the second connecting hole 1339 are threaded holes. By arranging the first connecting hole 1338 and / or the second connecting hole 1339 as threaded holes, the terminal 12 can be detachably connected with the connecting rod 13, and other electrical elements can also be detachably connected with the connecting rod 13.
[0044] Further, in an embodiment of the utility model, the terminal 12 comprises a first connecting part 121 and a second connecting part 123, a connecting disc 122 is arranged between the first connecting part 121 and the second connecting part 123, the first connecting part 121 is connected with a cable, and the second connecting part 123 is inserted into the first connecting hole 1338, so that the connecting disc 122 abuts against the first end 1336.
[0045] It can be understood that, by arranging the connecting disc 122, the end of the connecting disc 122 facing the second electrode 1333 and the first end 1336 abut, the conductive area is increased, and the conductive efficiency is improved.
[0046] Further, in an embodiment of the present application, the shell 11 comprises a connecting portion 111 and a rod portion 112, one end of the conductive rod 133 is arranged in the connecting rod 13 and connected with the terminal 12, and the other end of the conductive rod 133 extends from the rod portion 112.
[0047] It can be understood that the shell 11 is preferably T-shaped. The shell 11 can comprise a connecting portion 111 and a rod portion 112, one end of the connecting rod 13 is arranged in the rod portion 112 and connected with the terminal 12, and the other end of the connecting rod 13 extends from the rod portion 112, so as to facilitate conductive connection with other components.
[0048] Further, in an embodiment of the present application, the shell 11 is a rubber material shell 11. Preferably, the rubber material is silicone rubber. It can be understood that, by arranging the shell 11 as a rubber material shell 11, the flame retardant performance of the entire lightning arrester 100 is further improved.
[0049] In actual installation, first, select the required performance, size, and number of resistance sheets, arrange them longitudinally, and place the first electrode 1331 and the second electrode 1333 on the two sides respectively to form the conductive rod 133. In the injection molding machine, wrap the conductive rod 133 with a nylon material first flame retardant layer 131, and then wrap it with a rubber material second flame retardant layer 132 in the injection molding machine. After that, assemble it with the shell 11 also produced in the injection molding machine to complete the assembly of the lightning arrester 100. Then, through the connection of a series of fittings, auxiliary components, and other accessories, it can be assembled into an electrical cabinet.
[0050] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the content of the present application specification and drawings is included in the patent protection scope of the present application.
Claims
1. A surge arrester (100), characterized by, The application relates to a terminal (12) and a connecting rod (13) connected with the terminal (12), which are arranged in a shell (11).
2. A surge arrester (100) according to claim 1, characterized in that The first flame-retardant layer (131) is a nylon material first flame-retardant layer (131).
3. A surge arrester (100) according to claim 2, characterized in that The second flame-retardant layer (132) is a rubber material second flame-retardant layer (132).
4. A surge arrester (100) as claimed in claim 1, characterized in that, The conductive rod (133) comprises a first electrode (1331) and a second electrode (1333), and a core (1332) is further arranged between the first electrode (1331) and the second electrode (1333), wherein the core (1332) is composed of a plurality of resistance sheets.
5. A surge arrester (100) according to claim 4, characterized in that The resistance sheet is a zinc oxide material resistance sheet.
6. A surge arrester (100) as claimed in claim 4, characterized in that A first convex ring (1334) is arranged on the outer wall of the first electrode (1331), a second convex ring (1335) is arranged on the outer wall of the second electrode (1333), and the first flame-retardant layer (131) is arranged between the first convex ring (1334) and the second convex ring (1335) and covers the core (1332).
7. A surge arrester (100) according to claim 6, characterized in that The second flame-retardant layer (132) covers the outer walls of the first convex ring (1334), the first flame-retardant layer (131) and the second convex ring (1335).
8. A surge arrester (100) according to claim 7, characterized in that The first electrode (1331) has a first end portion (1336) at an end away from the second electrode (1333), the second electrode (1333) has a second end portion (1337) at an end away from the first electrode (1331), and an end of the second flame-retardant layer (132) away from the second electrode (1333) is flush with the first end portion (1336); the second end portion (1337) is wrapped by an end of the second flame-retardant layer (132) away from the first electrode (1331).
9. A surge arrester (100) according to claim 8, characterized in that A first connecting hole (1338) is further arranged on the first electrode (1331), the terminal (12) is inserted into the first connecting hole (1338) to be conductively connected with the first electrode (1331), and a second connecting hole (1339) penetrating into the second electrode (1333) is further arranged at an end of the conductive rod (133) away from the first electrode (1331).
10. A surge arrester (100) according to claim 9, characterized in that The terminal (12) comprises a first connecting portion (121) and a second connecting portion (123), a connecting disc (122) is arranged between the first connecting portion (121) and the second connecting portion (123), the first connecting portion (121) is connected with a cable, and the second connecting portion (123) is inserted into the first connecting hole (1338) so that the connecting disc (122) and the first end portion (1336) abut.
11. A surge arrester (100) as claimed in claim 1, characterized in that The shell (11) comprises a connecting portion (111) and a rod portion (112), one end of the connecting rod (13) is arranged in the rod portion (112) and connected with the terminal (12), and the other end of the connecting rod (13) extends out of the rod portion (112).
12. A surge arrester (100) as claimed in claim 1, characterized in that, The shell (11) is a rubber material shell (11).