Lightning arrester with adjustable discharge gap
By designing an adjustable discharge gap arrester, the problem of difficult gap adjustment in the existing technology is solved, adaptive adjustment to different tower types and insulator heights is achieved, and the lightning protection effect is improved.
Patent Information
- Application Number
- CN202422859732.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-22
AI Technical Summary
It is difficult to accurately adjust the gap distance of existing air-gap line-type lightning arresters during installation, resulting in an inability to adapt to differences in tower types and insulator heights, affecting the lightning protection effect.
A discharge gap adjustable lightning arrester is designed, which includes a gap adjustment bracket, channel steel, lightning arrester body, discharge electrode and porous flange. Micro-adjustment is achieved through fully threaded adjustment bolts and nuts, and the current monitor is combined to ensure accurate adjustment of the gap distance.
It realizes adaptive adjustment to different line tower types and insulator strings, ensures accurate adjustment of gap distance, and improves the lightning protection effect of the arrester.
Smart Images
Figure CN223427944U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transmission line lightning arrester installation technical field especially relates to a discharge gap adjustable lightning arrester. BACKGROUND
[0002] Air gap line type lightning arrester due to the isolation of series gap, when the system is normal, the body is basically in the state of "rest", most of the power frequency voltage is borne by the series gap, due to the withstand characteristics of series gap to power frequency and operating overvoltage, under the action of power frequency and operating overvoltage, the lightning arrester does not act, only under the action of lightning overvoltage, the series gap breaks down and discharges the lightning arrester to act, limits the lightning overvoltage, thereby ensuring that the protected line insulator (series) does not flashover, and after lightning impulse, the series gap reliably cuts off the power frequency current, and the system resumes normal operation. In order to ensure that the lightning arrester reaches the lightning protection effect after being installed on the line, the gap distance must meet the distance requirement during installation to ensure reliable operation of the lightning arrester, and the existing installation method is to use a folded work frame to complete the gap distance adjustment, which cannot be finely adjusted, and because the height of each type of tower, insulator and line conductor has a large floating deviation, it is difficult to adjust the required gap distance. SUMMARY
[0003] The utility model aims at overcoming the insufficient of prior art, provide a discharge gap adjustable lightning arrester.
[0004] The technical scheme of the utility model is: a discharge gap adjustable lightning arrester, including gap adjustment support, channel steel, lightning arrester main part, discharge electrode and lower flange plate, the top of lightning arrester main part is fixed with gap adjustment support through connecting piece, the tail of lightning arrester main part is fixedly connected with lower flange plate, lower flange plate is connected with discharge electrode, at least two fixed holes are arranged on gap adjustment support, the fixed hole is connected with one end of channel steel through connecting piece, the other end of channel steel is connected with cross arm through connecting piece, high voltage conductor is perpendicular to discharge electrode.
[0005] Further, the lower flange plate is a multi-hole flange, the threaded holes are arranged in a circumferential array on the multi-hole flange, and the threaded holes have at least two pairs.
[0006] Further, the fixed holes on the gap adjustment support can be arranged thirteen, and the distance between the fixed holes is equal.
[0007] Further, it further includes a fixed plate and a current monitor, one end of the fixed plate is fixed to the top of the lightning arrester main body through the connecting piece, the other end of the fixed plate is connected with the current monitor, and the wire of the current monitor is connected with the lightning arrester body.
[0008] Furthermore, two full-threaded adjustment bolts are provided on the discharge electrode; the two full-threaded adjustment bolts pass through the threaded holes at both ends of the diameter of the porous flange and cooperate with the adjustment nuts; an anti-loosening gasket is provided under the adjustment nut.
[0009] Furthermore, the height from the top of the arrester body to the high-voltage conductor is equal to the height of the insulator string.
[0010] Furthermore, the connecting member is a screw, two washers and two nuts, and the screw passes through the two washers and is threadedly connected to the two nuts.
[0011] Compared with the prior art, the present invention has the following beneficial effects: the present invention satisfies the requirement of adjusting the series gap distance, solves the differences of various lines and the diversity of tower types, can adjust the installation method in multiple places, can realize micro-adjustment and large-range adjustment, and the device can be applied to various line tower types, line insulator strings of different heights and types, complex terrain environments, etc., to realize accurate adjustment of the gap distance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attachment Figure 1 It is a structural diagram of the utility model;
[0013] Attachment Figure 2 This is a schematic structural diagram of the gap adjustment bracket of the present utility model;
[0014] Attachment Figure 3 This is a diagram of the discharge electrode and the lower flange in use in conjunction with each other in the utility model;
[0015] Attachment Figure 4 This is a schematic structural diagram of the discharge electrode and the fully threaded adjustment bolt of the utility model;
[0016] In the figure: 1. Gap adjustment bracket, 2. Channel steel, 3. Lightning arrester body, 4. Discharge electrode, 5. Lower flange, 6. Fixing hole, 7. Fixing plate, 8. Current monitor, 9. Full-thread adjustment bolt, 10. Adjusting nut, 11. Anti-loosening gasket, 12. Cross arm, 13. Connector, 14. High-voltage conductor, D, adjustable range 0-50mm, L, 170±10mm, H, insulator string height. DETAILED DESCRIPTION
[0017] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.
[0018] Combined with attachment Figure 1-4As shown, a lightning arrester with an adjustable discharge gap includes a gap adjustment bracket 1, a channel steel 2, an arrester body 3, a discharge electrode 4 and a lower flange 5; the top of the arrester body 3 is fixed with the gap adjustment bracket 1 through a connector 13; the tail of the arrester body 3 is fixedly connected to the lower flange 5; the lower flange 5 is connected to the discharge electrode 4; at least two fixing holes 6 are provided on the gap adjustment bracket 1; the fixing hole 6 is connected to one end of the channel steel 2 through a connector 13; the other end of the steel channel is connected to the cross arm 12 through a connector 13; the high-voltage wire 14 is kept perpendicular to the discharge electrode 4.
[0019] It should be noted that, in order to stabilize the arrester body, two channel steels 2 can be used to fix it on the cross arm 12 of the line tower.
[0020] With the above structure, the height difference between the top of the arrester body 3 and the steel trough can be adjusted by the gap adjustment bracket 1, and the lateral distance between the arrester and the cross arm 12 of the line tower is also adjustable.
[0021] It should be noted that the channel steel 2 and the cross arm 12 of the line tower are the main force-bearing members, and the two are fixed by the connecting member 13 to prevent the channel steel 2 from shaking up and down and to prevent loosening at this position.
[0022] Furthermore, the lower flange 5 is a porous flange; the porous flange is provided with threaded holes distributed in a circumferential array; and there are at least two pairs of threaded holes.
[0023] Furthermore, thirteen fixing holes 6 may be provided on the gap adjustment bracket 1; and the distances between the fixing holes 6 are equidistant.
[0024] Furthermore, it also includes a fixing plate 7 and a current monitor 8, one end of the fixing plate 7 is fixed to the top of the lightning arrester body 3 through a connector 13; the other end of the fixing plate 7 is connected to the current monitor 8; the wire of the current monitor 8 is connected to the lightning arrester body.
[0025] Furthermore, two full-threaded adjustment bolts 9 are provided on the discharge electrode 4 ; the two full-threaded adjustment bolts 9 pass through the threaded holes at both ends of the diameter of the porous flange and cooperate with the adjustment nuts 10 ; an anti-loosening gasket 11 is provided below the adjustment nut 10 .
[0026] In the above structure, the distance between the discharge electrode 4 and the high-voltage conductor 14 is calculated to be within the required value by directly fine-tuning the fully threaded adjustment bolt 9 if the difference is within 50 mm.
[0027] Furthermore, the height from the top of the arrester body to the high-voltage conductor 14 is equal to the height of the insulator string.
[0028] Furthermore, the connecting member 13 is a screw, two washers and two nuts, and the screw passes through the two washers and is threadedly connected to the two nuts.
[0029] The above structure can ensure the reliability of the connection between the arrester body 3 and the gap adjustment bracket 1.
[0030] It also includes an insulator string, one end of which is connected to a cross arm 12; the other end of the insulator string is connected to a high-voltage conductor 14. A high-voltage conductor 14 is also provided below the discharge electrode 4; two fully threaded adjustment bolts 9 are provided at both ends of the discharge electrode 4.
[0031] Working principle: first install the fixed lightning arrester channel steel 2 on the cross arm 12 of the line tower, then connect and fix the gap adjustment bracket lightning arrester, full-thread adjustment bolt 9, and discharge electrode 4 in sequence, then measure the height of the line insulator, calculate the approximate installation height, and place the gap adjustment bracket 1 on the front fixing hole 6 of the channel steel 2, then measure the distance between the discharge electrode 4 and the high-voltage conductor 14, calculate the height difference from the required value, within 50mm, directly fine-tune it through the full-thread adjustment bolt 9. If it exceeds 50mm, it is necessary to adjust the gap adjustment bracket 1 to within the range, and then fine-tune it through the full-thread adjustment bolt 9 to achieve the required gap distance value.
[0032] Note: The height from the top of the arrester body to the high-voltage conductor can meet the installation requirements of the insulator string height H within the range of 825-1245mm.
[0033] The high-voltage conductor and the discharge electrode must be vertical to achieve the best lightning protection effect. During installation, the fixed channel steel will cause angle deflection depending on the type of tower. The porous flange is used to adjust the angle to achieve verticality between the two.
[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A lightning arrester with adjustable discharge gap, characterized in that: It includes a gap adjustment bracket, channel steel, a lightning arrester body, a discharge electrode and a lower flange; the gap adjustment bracket is fixed to the top of the lightning arrester body through a connecting piece; the tail of the lightning arrester body is fixedly connected to the lower flange; the lower flange is connected to the discharge electrode; at least two fixing holes are provided on the gap adjustment bracket; the fixing hole is connected to one end of the channel steel through a connecting piece; the other end of the channel steel is connected to the cross arm through a connecting piece; the high-voltage wire is kept perpendicular to the discharge electrode.
2. The arrester with adjustable discharge gap according to claim 1, characterized in that: The lower flange is a porous flange; threaded holes distributed in a circumferential array are provided on the porous flange; there are at least two pairs of threaded holes.
3. The arrester with adjustable discharge gap according to claim 2, characterized in that: Thirteen fixing holes can be provided on the gap adjustment bracket; and the distances between the fixing holes are equidistant.
4. The arrester with adjustable discharge gap according to claim 3, characterized in that: It also includes a fixing plate and a current monitor, one end of the fixing plate is fixed to the top of the arrester body through a connector; the other end of the fixing plate is connected to the current monitor; and the wire of the current monitor is connected to the arrester body.
5. The arrester with adjustable discharge gap according to claim 4, characterized in that: Two full-thread adjustment bolts are provided on the discharge electrode; the two full-thread adjustment bolts pass through threaded holes at both ends of the diameter of the porous flange and match with the adjustment nuts; an anti-loosening gasket is provided under the adjustment nut.
6. The arrester with adjustable discharge gap according to claim 5, characterized in that: The height from the top of the arrester body to the high-voltage conductor is equal to the height of the insulator string.
7. The arrester with adjustable discharge gap according to claim 1, characterized in that: The connecting piece is a screw, two washers and two nuts, and the screw passes through the two washers and is threadedly connected with the two nuts.