CN213936875U - Lightning protection equipotential connecting device for medium wave station - Google Patents
Lightning protection equipotential connecting device for medium wave station Download PDFInfo
- Publication number
- CN213936875U CN213936875U CN202120061834.9U CN202120061834U CN213936875U CN 213936875 U CN213936875 U CN 213936875U CN 202120061834 U CN202120061834 U CN 202120061834U CN 213936875 U CN213936875 U CN 213936875U
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- lightning protection
- gas discharge
- run
- multilayer ceramic
- lightning
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Abstract
The utility model discloses a lightning protection equipotential connecting device that medium wave station was used, including metal casing, be equipped with insulating bottom plate in the metal casing, insulating bottom plate passes through insulating terminal and is connected with metal casing, insulating bottom plate upper berth is equipped with the run-on of a plurality of intervals parallel arrangement, the interval is equipped with a plurality of tie points on each run-on, tie point position on each run-on is corresponding, be connected with binding post on the run-on that is located head and the tail both ends, be connected with a multilayer ceramic gas discharge tube on at least a set of corresponding tie point between at least one adjacent run-on, and be connected with the short circuit copper bar on the corresponding tie point of all the other adjacent run-on that are connected with multilayer ceramic gas discharge tube with the same row. The working ground net and the lightning protection ground net of the transmitting equipment of the medium wave television station are connected through the device, the requirement of low resistance of the lightning protection ground net can be met on the premise that the resistance of the working ground net is not changed, and therefore the medium wave station is better protected from being damaged by lightning.
Description
Technical Field
The utility model relates to a lightning protection technical field, concretely relates to lightning protection equipotential connecting device that well wave station used.
Background
At present, because the radio and television medium wave station is built in a suburb and is simultaneously provided with a transmission iron tower of dozens of meters, the radio and television medium wave station is very easy to be damaged by thunder and lightning, in particular to be damaged by direct lightning. If the lightning can not be effectively discharged into the ground after the iron tower is subjected to lightning, lightning current is caused to impact against the ground potential or invade a power supply circuit in the form of lightning induction, so that equipment in a machine room is damaged, and program playing is influenced. The working place of the transmitting equipment adopts a radiation copper wire earth network form, the transmitting equipment is buried underground, the earth is used as the cathode of the transmitting equipment, when the transmitting power and the working ground resistance are a certain numerical value, the current flowing through the transmitting power tube is relatively constant, if the working ground resistance is lowered, the current flowing through the transmitting power tube is extremely high, so that the transmitting power tube is burnt out, the playing effect is influenced, and even the broadcasting stop is caused. And as for the lightning protection effect of buildings, the larger the lightning protection grounding grid area is, the smaller the grounding resistance is, the more easily the lightning current is released, and the better the lightning protection effect is. Therefore, there is a need for a lightning protection equipotential connecting device for a medium wave station, which connects a transmitting device working ground net and a lightning protection grounding net, wherein the two ground nets are isolated from each other in a normal state, and when a lightning strike occurs, the two ground nets can be instantly connected to rapidly discharge a lightning current into the ground.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a lightning protection equipotential connecting device that well ripples station was used for the ground net and the lightning protection grounding net of connecting the transmitting equipment can satisfy the requirement of lightning protection ground net low resistance under the prerequisite of guaranteeing not to change the ground net, and then effectively release the lightning current, thereby protect well ripples station to avoid the thunder and lightning to destroy better.
In order to solve the technical problem, the utility model discloses a technical scheme does: the utility model provides a lightning protection equipotential connecting device that well ripples station was used, includes metal casing, be equipped with insulating bottom plate in the metal casing, insulating bottom plate pass through insulating terminal with metal casing connects, insulating bottom plate upper berth is equipped with the run-on of a plurality of intervals parallel arrangement, each the interval is equipped with a plurality of tie points, each on the run-on the tie point position is corresponding, is connected with binding post on the run-on that is located head and the tail both ends, is connected with a multilayer ceramic gas discharge tube on at least a set of tie point that corresponds between at least one adjacent run-on, and is connected with the short circuit copper bar on the corresponding tie point of all the other adjacent run-on that are connected with multilayer ceramic gas discharge tube with the same row.
Further, the number of the connecting rows is four.
Furthermore, three connecting points are arranged on each connecting row.
Compared with the prior art, the utility model provides an advantage is: the lightning protection equipotential connecting device comprises a metal shell, an insulating bottom plate and a plurality of connecting rows which are arranged in parallel at intervals, wherein a plurality of corresponding connecting points are arranged on each connecting row, connecting terminals are connected on the connecting rows positioned at the head end and the tail end, when in use, the multilayer ceramic gas discharge tubes are connected with the corresponding connecting points between the adjacent connecting rows according to different use conditions, and the corresponding connecting points of the other adjacent connecting rows in the same row provided with the multilayer ceramic gas discharge tubes are ensured to be connected with short-circuit copper bars for short-circuit treatment, then the connecting device is connected with a working ground net and a lightning protection grounding net of a transmitting device of a wave station, the multilayer ceramic gas discharge tubes are not conducted under normal conditions, the two ground nets are mutually isolated, when lightning is discharged, the multilayer ceramic gas discharge tubes are instantaneously punctured by lightning current to be conducted, so that the working ground net and the lightning protection grounding net are communicated to form a large-area grounding net, thereby more effectively discharging the lightning current to ground. Because the frequency range of medium wave broadcasting is 526.5 kHz-1606.5 kHz, the frequency of the current of the ground grid of the transmitting equipment is also 526.5 kHz-1606.5 kHz, therefore, the more the multilayer ceramic gas discharge tubes are installed, the larger the lightning current can pass through, but the capacitive reactance of the equipotential connecting device is correspondingly increased, and the transmitting work effect of the station is easily influenced.
Drawings
Fig. 1 is a schematic structural diagram of the lightning protection equipotential connecting device for a medium wave station of the present invention.
The reference numbers in the figures are: 1-metal shell, 2-insulating bottom plate, 3-connecting bar, 4-short-circuit copper bar, 5-connecting terminal, 6-multilayer ceramic gas discharge tube and 7-connecting point.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, a lightning protection equipotential connecting device for a medium wave station includes a metal casing 1, an insulating base plate 2 is disposed in the metal casing, the insulating base plate 2 is connected to the metal casing 1 through an insulating terminal (not shown), a plurality of connecting rows 3 are disposed on the insulating base plate 2, preferably, the number of the connecting rows 3 is four, a plurality of connecting points 7 are disposed on each connecting row 3 at intervals, the positions of the connecting points 7 on each connecting row correspond to each other, preferably, three connecting points 7 are disposed on each connecting row 3, and the connecting points may be soldering points which can be soldered or movable connecting points which can be elastically crimped. The connecting rows 3 at the head end and the tail end are connected with wiring terminals 5, at least one group of corresponding connecting points 7 between at least one adjacent connecting row 3 are connected with a multilayer ceramic gas discharge tube 6, and the corresponding connecting points 7 of the other adjacent connecting rows 3 in the same row connected with the multilayer ceramic gas discharge tube 6 are connected with short-circuit copper bars 4.
The working principle is as follows: during the use, two binding post 5 connect the work earth mat and the lightning protection grounding network of medium wave platform firing equipment respectively, according to the in service behavior of difference, the multilayer ceramic gas discharge tube 6 of different quantity combinations of cluster between the connector assembly 3. When the number of the multilayer ceramic gas discharge tubes 6 connected in series is larger, the isolation between the lightning protection ground net and the working ground net is larger, and the lightning protection ground net is less likely to influence the working ground net. When the number of the multilayer ceramic gas discharge tubes 6 connected in parallel is larger, more lightning current can be passed. Because the configuration of the medium wave station is different, the configuration of the transmitting iron tower and the configuration of the machine room are also different, and the connecting device is provided with a plurality of groups of connecting points, so that the working personnel can flexibly select the number of the multilayer ceramic gas discharge tubes 6 in series and parallel according to the configuration on site.
If it is near the installation at the transmission tower, because the electric current ratio of ground net is great, consequently need more multilayer ceramic gas discharge tube 6 to establish ties in order to realize better isolation, and because the transmission tower directly accepts under most the circumstances and dodges the direct lightning, the lightning current ratio is great, consequently need more multilayer ceramic gas discharge tube 6 of quantity to connect in parallel, thereby reach bigger through-flow volume and release the lightning current, if can select the mode of three strings of three and a little, form an equipotential connecting device who comprises six multilayer ceramic gas discharge tube 6 like this.
If the device is installed near a machine room, because the current of a working ground grid is relatively small, the device can realize better isolation by connecting fewer multilayer ceramic gas discharge tubes 6 in series, most lightning current is induced lightning current discharged from a power supply circuit, the lightning current is relatively small, and the device can meet the requirement by only installing one or two multilayer ceramic gas discharge tubes 6. For example, when only one multilayer ceramic gas discharge tube 6 is installed, the multilayer ceramic gas discharge tube 6 can be installed on the corresponding connection points 7 of two adjacent connection rows 3 in one row, and the corresponding connection points 7 of the other adjacent connection rows 3 in the same row where the multilayer ceramic gas discharge tube 6 is installed are connected with the short-circuit copper bar 4 for short-circuit processing, so that an equipotential connection device composed of one multilayer ceramic gas discharge tube 6 can be formed. When two multilayer ceramic gas discharge tubes 6 are installed, the series-parallel relationship can be selected according to the configuration of the emission iron tower and the machine room.
Under normal operating condition, multilayer ceramic gas discharge tube 6 does not switch on, is mutual isolation between two connecting terminal 5, when the thunder and lightning circulation through, because thunder and lightning voltage is than higher, multilayer ceramic gas discharge tube 6 just can be punctured in the twinkling of an eye and switch on for work ground net and lightning grounding net intercommunication form the bigger ground net of area, make ground resistance littleer, thereby carry out the lightning current more effectively and release. This lightning protection equipotential connecting device's multilayer ceramic gas discharge tube 6 can be according to the in service behavior, nimble dismouting, and maintainer also can very conveniently change convenient to use after multilayer ceramic gas discharge tube 6 damages.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (3)
1. The utility model provides a lightning protection equipotential connecting device that medium wave station used which characterized in that: the metal shell is internally provided with an insulating bottom plate, the insulating bottom plate is connected with the metal shell through an insulating terminal, a plurality of connecting rows which are arranged in parallel at intervals are paved on the insulating bottom plate, each connecting row is provided with a plurality of connecting points at intervals, each connecting point on the connecting row is corresponding in position, connecting terminals are connected on the connecting rows at the head end and the tail end, at least one group of corresponding connecting points between at least one adjacent connecting row are connected with a multilayer ceramic gas discharge tube, and short circuit copper bars are connected on the corresponding connecting points of the other adjacent connecting rows which are connected with the same row of the multilayer ceramic gas discharge tube.
2. The lightning protection equipotential connection device of claim 1, wherein: the number of the connecting rows is four.
3. The lightning protection equipotential connection device of claim 1, wherein: and three connecting points are arranged on each connecting row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120061834.9U CN213936875U (en) | 2021-01-11 | 2021-01-11 | Lightning protection equipotential connecting device for medium wave station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120061834.9U CN213936875U (en) | 2021-01-11 | 2021-01-11 | Lightning protection equipotential connecting device for medium wave station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213936875U true CN213936875U (en) | 2021-08-10 |
Family
ID=77158469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120061834.9U Expired - Fee Related CN213936875U (en) | 2021-01-11 | 2021-01-11 | Lightning protection equipotential connecting device for medium wave station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213936875U (en) |
-
2021
- 2021-01-11 CN CN202120061834.9U patent/CN213936875U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210810 Termination date: 20220111 |