A plug-in DC power supply lightning arrester

Abstract

The present invention discloses a plug-in type DC power supply lightning arrester, comprising a lightning arrester body and a lightning arrester slot; when the lightning arrester body is inserted into the plug-in inner cavity, the positive busbar and the negative busbar of the DC power supply are just inserted into the positive socket and the negative socket respectively and connected with the positive copper sheet and the negative copper sheet, and the through hole of the lightning arrester body corresponds to the position of the limit hole of the lightning arrester slot, and the movable limit buckle is just detachably buckled in the limit hole. The plug-in type DC power supply lightning arrester of the present invention can realize pluggable connection with the power supply product, and through the provided handle, the lightning arrester body can be directly pulled out when disassembling the lightning arrester body, which is convenient and time-saving.

Description

Technical Field

[0001] The invention relates to the technical field of lightning arresters, and in particular to a plug-in direct current power supply lightning arrester. Background Art

[0002] Existing high-density DC power products cannot accommodate large-sized DC lightning arresters due to their high space requirements, so they use PCB board welding lightning protection components to protect against lightning. This lightning protection method is more troublesome to install and remove the lightning arrester. When replacing, you need to open the center of the product, remove the screws and connecting cables of the lightning arrester, and then follow the reverse steps to install the new lightning arrester, which is very time-consuming.

[0003] Therefore, a DC lightning arrester that can be quickly replaced is needed to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a plug-in direct current power supply lightning arrester.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A plug-in type DC power supply lightning arrester comprises a lightning arrester body and a lightning arrester slot;

[0007] The lightning arrester slot includes an outer shell and an inserting inner cavity provided in the outer shell, wherein the inserting inner cavity matches the lightning arrester body; an opening is provided at one end of the inserting inner cavity, and the other end corresponds to the position of the positive busbar and the negative busbar of the DC power supply; a limiting hole is provided on one side of the inserting inner cavity;

[0008] A positive electrode socket and a negative electrode socket are provided at one end of the lightning arrester body, and the positive electrode copper sheet and the negative electrode copper sheet of the lightning arrester body are located in the positive electrode socket and the negative electrode socket; the lightning arrester body also includes a movable limit buckle, and a through hole for the movable limit buckle to extend out of the lightning arrester body and retract into the lightning arrester body;

[0009] When the lightning arrester body is inserted into the plug-in inner cavity, the positive busbar and the negative busbar of the DC power supply are respectively inserted into the positive socket and the negative socket and connected to the positive copper sheet and the negative copper sheet, and the positions of the through hole and the limiting hole correspond, and the movable limiting buckle is detachably buckled in the limiting hole.

[0010] Furthermore, a handle is provided at the other end of the lightning arrester body.

[0011] Furthermore, the movable limit buckle is connected to the limit switch pull rod; the limit switch pull rod is movably arranged in the lightning arrester body, one end of which is connected to the movable limit buckle, and the other end is exposed to the outside of the lightning arrester body.

[0012] Furthermore, the movable limit buckle and the limit switch pull rod together form an L-shaped structure, and a protrusion is provided on the inner wall of the lightning arrester body. When the movable limit buckle is buckled in the limit hole, the protrusion matches the depression formed at the connection between the movable limit buckle and the limit switch pull rod; the opposite sides of the protrusion and the movable limit buckle are both inclined toward the direction of the other end of the limit switch pull rod, and the other sides of the protrusion and the movable limit buckle are both inclined toward the direction of one end of the limit switch pull rod.

[0013] Furthermore, a gripping portion is provided at one end of the limit switch pull rod.

[0014] Furthermore, an outer surface of the lightning arrester body is provided with an indication window communicated with the interior, the indication window corresponds to one end of a trip bracket inside the lightning arrester body, and one end of the trip bracket is dyed with a color; a failure indication rod and a failure indication rod spring are also provided inside the lightning arrester body, the failure indication rod is located on one side of one end of the trip bracket and abuts against one end of the trip bracket; one end of the failure indication rod spring is connected to the failure indication rod, and the other end is connected to the inner wall of the lightning arrester body, when the failure indication rod and the trip bracket abut against each other, the failure indication rod spring is in a compressed deformation state; when the failure indication rod spring is in a non-deformed state, one side of the failure indication rod corresponds to the position of the indication window, and one side of the failure indication rod is dyed with another color.

[0015] Furthermore, the position where the failure indicating rod and the trip bracket abut against each other is a matching inclined surface inclined toward the other end of the trip bracket.

[0016] Furthermore, the positive copper sheet and the negative copper sheet each include two side walls, one ends of the two side walls are connected, and the distance between the two side walls gradually decreases from the connected end to the other end until they are in contact and then gradually increases.

[0017] The beneficial effects of the present invention are:

[0018] 1. The plug-in DC power supply lightning arrester of the present invention can realize pluggable connection with DC power supply products. When installing or removing the lightning arrester body, the lightning arrester body can be directly inserted or pulled out, which is convenient and time-saving, and the installation is firm.

[0019] 2. The plug-in DC power supply lightning arrester of the present invention can indicate the working status of the lightning arrester, so that maintenance personnel can quickly know whether the lightning arrester is working normally or has failed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure cross section of a plug-in type DC power supply lightning arrester according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of the local A in the middle;

[0022] Figure 3 is a cross-sectional schematic diagram of a lightning arrester slot in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of the lightning arrester body in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of a cross section of a lightning arrester body in an embodiment of the present invention;

[0025] Figure 6 for Figure 5 A magnified schematic diagram of the part B in the middle;

[0026] Figure 7 Schematic diagram of the structure of the positive copper sheet / negative copper sheet in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0028] This embodiment provides a plug-in DC power supply lightning arrester, such as Figure 1 -2, including a lightning arrester body 1 and a lightning arrester slot 11;

[0029] like Figure 3 As shown, the lightning arrester slot 11 includes an outer shell 12 and a plug-in inner cavity 13 provided in the outer shell 12, and the plug-in inner cavity 13 matches the lightning arrester body 1; one end of the plug-in inner cavity 13 is provided with an opening, and the other end corresponds to the position of the positive busbar 14 and the negative busbar 15 of the DC power supply; one side of the plug-in inner cavity 13 is provided with a limiting hole 16;

[0030] like Figure 4 As shown, one end of the lightning arrester body 1 is provided with a positive electrode socket 3 and a negative electrode socket 4, and the positive electrode copper sheet 5 and the negative electrode copper sheet 6 of the lightning arrester body 1 are located in the positive electrode socket 3 and the negative electrode socket 4; the lightning arrester body 1 also includes a movable limit buckle 9, and a through hole 10 for the movable limit buckle 9 to extend out of the lightning arrester body 1 and retract into the lightning arrester body 1;

[0031] like Figure 1As shown, when the lightning arrester body 1 is inserted into the plug-in inner cavity 13, the positive busbar 14 and the negative busbar 15 of the DC power supply are respectively inserted into the positive socket 3 and the negative socket 4 and connected to the positive copper sheet 5 and the negative copper sheet 6, and the positions of the through hole 10 and the limiting hole 16 correspond, and the movable limiting buckle 9 is just detachably buckled in the limiting hole 16.

[0032] In this embodiment, the vertical height dimension of the lightning arrester body is limited to within 1 U. 1 U refers to the vertical height unit, 1U = 1.75 inches = 44.45 mm.

[0033] The above-mentioned plug-in DC power supply lightning arrester can realize pluggable connection with DC power supply products, install the lightning arrester slot in the DC power supply product, and only need to insert or pull out the lightning arrester body into or out of the lightning arrester slot when installing or removing the lightning arrester body, which is convenient and time-saving. After the lightning arrester body 1 is inserted into the plug-in inner cavity 13, the movable limit buckle 9 is passed through the through hole 10 and extends to the outside of the lightning arrester body 1, so that it can be buckled in the limit hole 16, playing a limiting role of the lightning arrester body 1. When the lightning arrester body 1 needs to be disassembled, the movable limit buckle 9 is retracted into the lightning arrester body 1 and separated from the limit hole 16, and the lightning arrester body 1 can be pulled out.

[0034] In this embodiment, Figure 4 As shown, a handle 2 is provided at the other end of the lightning arrester body 1. The provided handle facilitates the insertion or extraction operation of the lightning arrester body, which is convenient and time-saving.

[0035] In this embodiment, if Figure 1 , 2 As shown in Figures 4 and 5, the movable limit buckle 9 is connected to the limit switch rod 8; the limit switch rod 8 is movably arranged in the lightning arrester body 1, one end of which is connected to the movable limit buckle 9, and the other end is exposed to the outside of the lightning arrester body 1.

[0036] After the lightning arrester body 1 is inserted into the plug-in inner cavity 13, the limit switch pull rod 8 is pushed in the direction of the limit hole 16 until the movable limit buckle 9 reaches the position of the through hole 10 and the limit hole 16, passes through the through hole 10 and buckles into the limit hole 16, thereby fixing the lightning arrester body 1 and preventing it from slipping out of the plug-in inner cavity 13.

[0037] Furthermore, if Figure 1 , 2As shown, the movable limit buckle 9 and the limit switch rod 8 together form an L-shaped structure, and a protrusion 17 is provided on the inner wall of the lightning arrester body 1. When the movable limit buckle 9 is buckled in the limit hole 16, the protrusion 17 matches the depression formed at the connection between the movable limit buckle 9 and the limit switch rod 8; the opposite sides of the protrusion 17 and the movable limit buckle 9 are both inclined toward the direction of the other end of the limit switch rod 8, and the other sides of the protrusion 17 and the movable limit buckle 9 are both inclined toward the direction of one end of the limit switch rod 8.

[0038] By providing the protrusion 17, a certain limiting effect can be played on the movable limit buckle 9, thereby preventing the movable limit buckle 9 from easily withdrawing from the limiting hole 16 due to vibration or inversion of the lightning arrester slot. The side opposite to the protrusion 17 and the movable limit buckle 9 is inclined in the direction of the other end of the limit switch pull rod 8, so that when the limit switch pull rod 8 is pulled, the movable limit buckle 9 is guided so that it can be pulled out smoothly. The other side of the protrusion 17 and the movable limit buckle 9 is inclined in the direction of one end of the limit switch pull rod 8 so that when the limit switch pull rod 8 is pushed, the movable limit buckle 9 can be guided so that it can be pushed in smoothly.

[0039] Furthermore, one end of the limit switch pull rod 8 is provided with a gripping portion 81. The provision of the gripping portion 81 facilitates the operation of pulling out or pushing in the limit switch pull rod 8.

[0040] In this embodiment, if Figure 4 -6, the outer surface of the lightning arrester body 1 is provided with an indication window 20 (in this embodiment, it is arranged on the handle 2) which is communicated with the interior, the indication window 20 corresponds to one end of the trip bracket 21 inside the lightning arrester body 1, and one end of the trip bracket 21 is dyed with a color (preferably green); the lightning arrester body 1 is also provided with a failure indication rod 22 and a failure indication rod spring 23, the failure indication rod 22 is located on one side of one end of the trip bracket 21 and abuts against one end of the trip bracket 21; one end of the failure indication rod spring 23 is connected to the failure indication rod 22, and the other end is connected to the inner wall of the lightning arrester body 1, when the failure indication rod 22 and the trip bracket 21 abut against each other, the failure indication rod spring 23 is in a compressed deformation state; when the failure indication rod spring 23 is in a non-deformed state, one side of the failure indication rod 22 corresponds to the position of the indication window 20, and one side of the failure indication rod 22 is dyed with another color (preferably red).

[0041] The lightning arrester body in this embodiment is the same as the existing lightning arrester, and is provided with a trip bracket 21. The trip welding piece 24 of the trip bracket 21 and the thermal trip electrode 25 of the varistor are welded at low temperature. The trip welding piece 24 is fixed with the thermal trip electrode 25 to limit the trip bracket 21. When an abnormal situation such as overvoltage or overcurrent occurs in the circuit, the solder joint between the trip welding piece 24 and the thermal trip electrode 25 will melt due to heat, and the trip welding piece 24 will separate from the thermal trip electrode 25, instantly cutting off the connection with the varistor to prevent spontaneous combustion caused by overcurrent heating. In this embodiment, based on the above principle, an indication window is set on the outside of the lightning arrester body 1, and the corresponding end of the trip bracket 21 is dyed with color, which can play a role in indicating that the lightning arrester is currently working normally. At this time, one end of the trip bracket 21 squeezes the failure indicator rod and causes the failure indicator rod spring to be compressed and deformed. When an abnormal situation such as overvoltage or overcurrent occurs in the circuit, the fixing effect of the thermal trip electrode 25 is lost, and the limiting effect of the trip welding piece 24 on the trip bracket 21 disappears. At this time, the squeezing effect of the trip bracket 21 on the failure indicator rod 22 disappears, and the failure indicator rod 22 moves and squeezes the trip bracket 21 under the potential energy of the failure indicator rod spring 23 returning to its original state, so that it slides toward the other end of the trip bracket 21 until the failure indicator rod spring 23 returns to its original state, and one side of the failure indicator rod 22 corresponds to the position of the indication window 20. At this time, another different color appears in the indication window to indicate the failure of the current lightning arrester.

[0042] More specifically, in this embodiment, the position where the failure indicator rod 22 and the trip bracket 21 abut against each other is a matching inclined surface inclined toward the other end of the trip bracket 21. The setting of the inclined surface can make it easier for the failure indicator rod 22 to squeeze the trip bracket 21 under the action of the failure indicator rod spring 23 and slide toward the other end of the trip bracket 21.

[0043] In this embodiment, if Figure 7 As shown, the positive copper sheet 5 and the negative copper sheet 6 each include two side walls 101, 102, one end of the two side walls 101, 102 are connected, and the distance between the two side walls 101, 102 gradually decreases from the connected end to the other end until they are in contact and then gradually increase. The above structure will make the positive copper sheet and the negative copper sheet have a bifurcated open end, and have a clamping position (i.e., a contact position) that can clamp the positive busbar and the negative busbar. When the positive busbar and the negative busbar are inserted into the positive socket and the negative socket, they will be inserted into the positive copper sheet and the negative copper sheet from the open end of the positive copper sheet and the negative copper sheet, and clamped by the positive copper sheet and the negative copper sheet, thereby ensuring the connection tightness between the positive copper sheet and the negative copper sheet and the positive busbar and the negative busbar, and can also further prevent the lightning arrester body from slipping out of the plug-in inner cavity.

[0044] The lightning arrester body 1 also has a remote signaling interface 7, which allows the connection of a remote signaling terminal to facilitate remote monitoring of the working status of the lightning arrester and whether it is damaged.

[0045] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the present invention.

Claims

1. A plug-in DC power supply lightning arrester, characterized in that: It includes a lightning arrester body and a lightning arrester slot; The lightning arrester slot includes an outer shell and an inserting inner cavity provided in the outer shell, wherein the inserting inner cavity matches the lightning arrester body; an opening is provided at one end of the inserting inner cavity, and the other end corresponds to the position of the positive busbar and the negative busbar of the DC power supply; a limiting hole is provided on one side of the inserting inner cavity; A positive electrode socket and a negative electrode socket are provided at one end of the lightning arrester body, and the positive electrode copper sheet and the negative electrode copper sheet of the lightning arrester body are located in the positive electrode socket and the negative electrode socket; the lightning arrester body also includes a movable limit buckle, and a through hole for the movable limit buckle to extend out of the lightning arrester body and retract into the lightning arrester body; When the lightning arrester body is inserted into the plug-in inner cavity, the positive busbar and the negative busbar of the DC power supply are just inserted into the positive socket and the negative socket respectively and connected with the positive copper sheet and the negative copper sheet, and the positions of the through hole and the limiting hole correspond, and the movable limiting buckle is just detachably buckled in the limiting hole; The other end of the lightning arrester body is provided with a handle; The movable limit buckle is connected to the limit switch pull rod; the limit switch pull rod is movably arranged in the lightning arrester body, one end of which is connected to the movable limit buckle, and the other end is exposed to the outside of the lightning arrester body.

2. The plug-in DC power supply lightning arrester according to claim 1, characterized in that: The movable limit buckle and the limit switch pull rod together form an L-shaped structure. A protrusion is provided on the inner wall of the lightning arrester body. When the movable limit buckle is buckled in the limit hole, the protrusion matches the depression formed at the connection between the movable limit buckle and the limit switch pull rod; the opposite sides of the protrusion and the movable limit buckle are both inclined toward the direction of the other end of the limit switch pull rod, and the other sides of the protrusion and the movable limit buckle are both inclined toward the direction of one end of the limit switch pull rod.

3. The plug-in DC power supply lightning arrester according to claim 1 or 2, characterized in that: One end of the limit switch pull rod is provided with a gripping portion.

4. The plug-in DC power supply lightning arrester according to claim 1, characterized in that: The outer surface of the lightning arrester body is provided with an indication window communicated with the interior, the indication window corresponds to one end of a trip bracket inside the lightning arrester body, and one end of the trip bracket is dyed with color; a failure indication rod and a failure indication rod spring are also provided inside the lightning arrester body, the failure indication rod is located on one side of one end of the trip bracket and abuts against one end of the trip bracket; one end of the failure indication rod spring is connected to the failure indication rod, and the other end is connected to the inner wall of the lightning arrester body, and when the failure indication rod and the trip bracket abut against each other, the failure indication rod spring is in a compressed deformation state; When the failure indicating rod spring is in a non-deformed state, one side of the failure indicating rod corresponds to the position of the indicating window, and one side of the failure indicating rod is dyed with another color.

5. The plug-in type DC power supply lightning arrester according to claim 4, characterized in that: The position where the failure indicating rod and the tripping bracket abut against each other is a matching inclined surface inclined toward the other end of the tripping bracket.

6. The plug-in DC power supply lightning arrester according to claim 1, characterized in that: The positive copper sheet and the negative copper sheet both include two side walls, one ends of the two side walls are connected, and the distance between the two side walls gradually decreases from the connected end to the other end until they are in contact and then gradually increase.

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