CN218850404U - Lightning protection device for three-phase alternating current - Google Patents
Lightning protection device for three-phase alternating current Download PDFInfo
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- CN218850404U CN218850404U CN202223030640.6U CN202223030640U CN218850404U CN 218850404 U CN218850404 U CN 218850404U CN 202223030640 U CN202223030640 U CN 202223030640U CN 218850404 U CN218850404 U CN 218850404U
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Abstract
The utility model belongs to the technical field of the lightning protection, the utility model provides a lightning protection device for three-phase alternating current, the surge protection component that three-phase alternating current needs is installed respectively directly to the baffle both sides of inner shell, and the tip of every surge protection component is provided with the low temperature solder joint respectively, every low temperature solder joint is connected with the connecting rod respectively, when the surge protection component is effective, the low temperature solder joint of surge protection component tip is connected with the connecting rod, when the surge protection component became invalid, the low temperature solder joint of surge protection component tip is disconnected with the connecting rod to deviate from original position through the elastic element with connecting rod complex; the state indicating module displays different states according to whether the surge protection element is effective or not, so that three surge protectors which are simultaneously and respectively connected with three-phase alternating current are arranged in the lightning protection device, and remote signaling action is promoted through a linkage structure; thereby meeting the small-volume requirement of the lightning protection device for the three-phase alternating current.
Description
Technical Field
The utility model relates to a lightning protection technical field especially relates to a lightning protection device for three-phase alternating current.
Background
The existing surge protector is formed by connecting a single piezoresistor body and a gas discharge tube in series and then connecting the piezoresistor body and the gas discharge tube in parallel so as to achieve the sufficient capability of releasing lightning current, and the number of the parallel connection depends on the magnitude of the lightning current released during the design of a product. The design needs to occupy a large space, and the space of the plastic seat of the surge protector is limited, so that the parallel connection quantity of the pressure-sensitive and gas discharge tubes connected in series is limited, and the current amount of the discharged lightning current is limited.
For example, the chinese patent application No. CN200920060380.2 discloses a surge protector, which comprises a plastic shell, a plastic upper cover, a varistor group and a gas discharge tube, wherein the varistor group is sequentially and longitudinally arranged in the plastic shell and is composed of a plurality of varistors, the varistors are longitudinally arranged in a cavity of the plastic shell side by side after being connected in parallel, a connecting piece is arranged at the front end of the varistors side by side, the inner side surface of the connecting piece is connected with the power connection end in front of the varistors side by side, and the outer side surface of the connecting piece is connected with the power connection end of the inner side surface of the gas discharge tube; thereby having the advantages of small volume and large lightning current leakage.
However, the surge protector cannot meet all requirements, and how to provide an integrated small-volume lightning protection device becomes a technical problem to be continuously solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lightning protection device for three-phase alternating current, which is characterized in that three surge protectors which are simultaneously and respectively connected with the three-phase alternating current are arranged in the lightning protection device, and remote signaling action is promoted through a linkage structure; thereby meeting the small-volume requirement of the lightning protection device for the three-phase alternating current.
The utility model provides a lightning protection device for three-phase alternating current, a serial communication port, include:
surge protection elements respectively arranged in the three-phase alternating current circuit and used for limiting the transient overvoltage entering the power line and the signal transmission line within the voltage range which can be borne by the equipment or the system, or discharging strong lightning current into the ground to protect the protected equipment or the system from being impacted;
the inner shell is used for installing a surge protection element and comprises a partition plate, and the surge protection element is respectively installed on two sides of the partition plate;
the circuit board and the surge protection element form a protection circuit for realizing the electric wiring function and the transmission of failure signals of the product;
the end part of each surge protection element is respectively provided with a low-temperature welding spot, each low-temperature welding spot is respectively connected with a connecting rod, when the surge protection element is effective, the low-temperature welding spot at the end part of the surge protection element is connected with the connecting rod, when the surge protection element fails, the low-temperature welding spot at the end part of the surge protection element is disconnected with the connecting rod, and deviates from the original position through an elastic element matched with the connecting rod;
and the state indicating module is internally provided with a tongue plate, the tongue plate is connected with the connecting rod and drives a microswitch in the state indicating module through the tongue plate, the microswitch is connected with the display module, the microswitch is positioned at different positions according to whether the connecting rod is connected with the low-temperature welding spot at the end part of the surge protection element, and the display module is in different states due to different positions of the connecting rod.
In a preferred embodiment of the present invention, the number of surge protection elements is four, and the two sides of the partition are respectively provided with a mold cavity for installing two surge protection elements.
In a further preferred embodiment of the present invention, four of the three surge protection elements are connected to the three-phase live wire respectively, and another surge protection element is connected to the zero wire.
In the preferred embodiment of the present invention, the lightning protection device for three-phase ac power further includes a discharge tube element for discharging a lightning, and the discharge tube is electrically connected to the surge protection element.
In a preferred embodiment of the present invention, the surge protection element is a varistor.
The utility model discloses in the preferred embodiment, the status indication module is used for the product to become invalid and produces the displacement, indicates for the display window transmission and changes, promotes the micro-gap switch action simultaneously, transmits the circuit signal.
By adopting the technical scheme, surge protection elements required by three-phase alternating current are directly and respectively installed on two sides of the partition plate of the inner shell, the end part of each surge protection element is provided with a low-temperature welding spot, each low-temperature welding spot is respectively connected with a connecting rod, when the surge protection elements are effective, the low-temperature welding spots on the end parts of the surge protection elements are connected with the connecting rods, and when the surge protection elements fail, the low-temperature welding spots on the end parts of the surge protection elements are disconnected with the connecting rods and deviate from the original positions through elastic elements matched with the connecting rods; the state indicating module displays different states according to whether the surge protection element is effective or not, so that three surge protectors which are simultaneously and respectively connected with three-phase alternating current are arranged in the lightning protection device, and remote signaling action is promoted through a linkage structure; thereby meeting the small-volume requirement of the lightning protection device for the three-phase alternating current.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic structural diagram of a lightning protection device for three-phase ac power according to an embodiment of the present invention.
Fig. 2 is an exploded schematic view of a three-phase ac lightning protection device according to an embodiment of the present invention.
Fig. 3 is a schematic partial view illustrating a lightning protection device for three-phase ac power according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a partial schematic view of a lightning protection device for three-phase ac power according to an embodiment of the present invention, which corresponds to a first state schematic diagram.
Fig. 5 is a schematic partial view illustrating components corresponding to two surge protection elements of the first side of the lightning protection device for three-phase alternating current according to an embodiment of the present invention.
Fig. 6 is a partial schematic view of a second side surge protection element and a discharge tube corresponding component in a lightning protection device for three-phase ac power according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a second state corresponding to a schematic diagram of a part of a three-phase ac lightning protection device according to an embodiment of the present invention.
Fig. 8 is a schematic circuit diagram of a lightning protection device for three-phase ac power according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of a surge protection element in a lightning protection device for three-phase ac power in a first state according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of a surge protection element in a lightning protection device for three-phase ac power in a second state according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a state indicating component in a lightning protection device for three-phase ac power in a first state according to an embodiment of the present invention.
Fig. 12 is a schematic structural diagram of a state indicating component in a lightning protection device for three-phase ac power in a second state according to an embodiment of the present invention.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings and examples, so as to solve the technical problems by applying technical means to the present invention, and to fully understand and implement the technical effects of the present invention. It should be noted that the specific description is only for the purpose of making the present invention easier and clearer for those skilled in the art to understand, and is not a limiting explanation of the present invention; and as long as do not constitute conflicts, each embodiment and each feature in each embodiment in the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
In addition, the terminology used in the embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
The technical scheme of the embodiment is described in detail below with reference to the accompanying drawings and reference numerals; fig. 1 is a schematic structural diagram of a three-phase alternating current lightning protection device provided in this embodiment, fig. 2 is an exploded schematic diagram of a three-phase alternating current lightning protection device provided in this embodiment, fig. 3 is a schematic partial diagram of a three-phase alternating current lightning protection device provided in this embodiment (a schematic diagram of a matching relationship between a surge protection element and each component on a partition), fig. 4 is a schematic partial diagram of a three-phase alternating current lightning protection device provided in this embodiment corresponding to a first state (a schematic diagram of a surge protection element in an effective state), fig. 5 is a schematic partial diagram of a three-phase alternating current lightning protection device provided in this embodiment corresponding to two surge protection elements on a first side, fig. 6 is a schematic partial diagram of a three-phase alternating current lightning protection device provided in this embodiment corresponding to a second side surge protection element and a discharge tube, and fig. 7 is a schematic partial diagram of a three-phase alternating current lightning protection device provided in this embodiment corresponding to a second state (a schematic diagram of a surge protection element in a failure state).
As shown in fig. 1 to 7, a lightning protection device 100 for three-phase alternating current according to the present embodiment includes:
an inner case 160 for mounting surge protection elements, the inner case including a partition plate on both sides of which the surge protection elements are mounted, respectively;
a circuit board 120 forming a protection circuit with the surge protection element for realizing the electrical wiring function and the transmission of failure signals of the product;
the end part of each surge protection element is respectively provided with a low-temperature welding spot, each low-temperature welding spot is respectively connected with a connecting rod, when the surge protection elements are effective, the low-temperature welding spots at the end parts of the surge protection elements are connected with the connecting rods, and when the surge protection elements fail, the low-temperature welding spots at the end parts of the surge protection elements are disconnected with the connecting rods and deviate from the original positions through elastic elements matched with the connecting rods;
the state indicating module 150 is internally provided with a tongue plate, the tongue plate is connected with the connecting rod and drives a microswitch in the state indicating module through the tongue plate, the microswitch is connected with the display module and is positioned at different positions according to whether the connecting rod is connected with a low-temperature welding spot at the end part of the surge protection element, and the display module is in different states due to different positions of the connecting rod.
It should be noted that, for convenience of description, the same devices and modules are denoted by different reference numerals in different drawings.
As shown in fig. 1 to fig. 7, the lightning protection device 100 for three-phase alternating current provided in this embodiment further includes:
a module housing 110 for protecting the internal components.
A module housing cover plate 130 for cooperating with the module housing to restrict movement of the internal components.
The switch indication module 140 is provided with a micro switch inside, and the action of the micro switch can transmit circuit signals and give remote indication.
And the state indicating module 150 is used for generating displacement when the product fails, transmitting indication change to the display window, pushing the switch indicating module 140 to perform switching action, transmitting a circuit signal and giving remote indication.
An inner housing 160 for surge protection elements 172, 178, 190 and the like and provides assistance based on the actuation mechanism of the status indication module 150. In a preferred embodiment, the surge protection elements 172, 178, 190 are piezoresistors, respectively.
And the push rods 174 and 176 are used for respectively triggering the mechanism of the state indicating module 150 for executing horizontal displacement.
The push rod springs 82, 184 and 192 are respectively used for triggering the push rod 174 and the push rod 176 to push the state indicating module 150, and then realize transverse movement.
And a discharge tube 194, a discharge tube element for discharging lightning, the discharge tube 194 being electrically connected to the surge protection element.
The piezoresistor 178 is electrically connected with the electrode of the piezoresistor 190 and then connected with the electrode of the electrode 191 at low temperature by a low-temperature alloy material, the low-temperature connecting electrode of the electrode 191 is connected at low temperature, the low-temperature connecting part of the electrode 191 is clamped in the connecting rod 193 to form a linkage component (an integral component of the low-temperature connecting electrode 191 and the connecting rod 193), the ejector rod spring 192 is compressed and clamped in the connecting rod 193, components corresponding to other surge protection elements also adopt a structure similar to that in the figure 6, for example, as shown in figure 5, the end parts of the surge protection elements 172 and 178 are respectively provided with low- temperature welding spots 173 and 175; in the structure, other 3 relatively independent components are matched, the state indicating module 150 can be limited in the inner shell 160 components to realize the degree of freedom of transverse movement due to the internal shape and structure design, the state indicating module 150 is pulled back by the tension spring 154, but the tongue plate structure 152 of the state indicating module 150 is clamped and clamped by the inner shell 160 in a flat state, so that the force balance is achieved, and when the tongue plate structure is not pulled back, the tension spring 154 is clamped and clamped in the inner shell 160.
As shown in fig. 1-8, in a preferred embodiment of this embodiment, the number of surge protection elements is four, and two cavities for installing two surge protection elements are respectively disposed on two sides of the partition 160. In a further preferred embodiment, three of the four surge protection elements are connected to the three-phase live wire, respectively, and the other surge protection element is connected to the neutral wire.
Fig. 4 is a partial schematic view of a three-phase ac lightning protection device according to this embodiment, corresponding to a first state schematic view, fig. 9 is a schematic view of a surge protection element in the three-phase ac lightning protection device according to this embodiment in the first state, and fig. 11 is a schematic view of a state indicating component in the three-phase ac lightning protection device according to this embodiment in the first state. Fig. 7 is a schematic diagram of a second state corresponding to a partial schematic diagram of a three-phase ac lightning protection device provided in this embodiment, fig. 10 is a schematic diagram of a surge protection element in the three-phase ac lightning protection device provided in this embodiment in the second state, and fig. 12 is a schematic diagram of a structure of a state indicating component in the three-phase ac lightning protection device provided in this embodiment in the second state.
In this embodiment, when each MOV is normal, 4 mold cavities are provided, and the connecting rod 193 is fixed at a certain position by a low-temperature alloy material, when one of the piezoresistors fails, the low-temperature alloy material melts, the ejector spring 192 pushes back the connecting rod 193 to push upwards, so as to generate any upward pushing force Fn (n =1, 2, 3 or 4, specifically corresponding to the serial number corresponding to the piezoresistor), push the tongue 152 of the status indication module 150 upwards to deform, the tongue 152 moves away from the limiting column structure 410 of the 160 inner shell part, and the status indication module 150 is internally provided with a first tension spring end fixing column 310 and a second tension spring end fixing column 420 which are matched with the tension spring 154; under the action of the tension spring 154, the 150 failure part moves to the left, so that the 150 failure indication part structure 220 is separated from the crimping position of the crimping 210 switch, and the micro switch 210 is triggered to act.
By adopting the technical scheme, surge protection elements required by three-phase alternating current are directly and respectively installed on two sides of the partition plate of the inner shell, the end part of each surge protection element is provided with a low-temperature welding spot, each low-temperature welding spot is respectively connected with a connecting rod, when the surge protection elements are effective, the low-temperature welding spots on the end parts of the surge protection elements are connected with the connecting rods, and when the surge protection elements fail, the low-temperature welding spots on the end parts of the surge protection elements are disconnected with the connecting rods and deviate from the original positions through elastic elements matched with the connecting rods; according to whether the surge protection element is effective or not, the state indicating module displays different states, three surge protectors which are simultaneously and respectively connected with three-phase alternating current are arranged in the lightning protection device, and remote signaling action is promoted through a linkage structure; thereby meeting the small-volume requirement of the lightning protection device for the three-phase alternating current.
Finally, it should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. The above disclosed embodiments and technical content can be utilized by any person skilled in the art to make many possible variations, simple substitutions and the like without departing from the scope of the present invention, which is within the protection scope of the present invention.
Claims (6)
1. A lightning protection device for three-phase alternating current, comprising:
surge protection elements respectively arranged in the three-phase alternating current circuit and used for limiting the transient overvoltage entering the power line and the signal transmission line within the voltage range which can be borne by equipment or a system, or discharging strong lightning current into the ground to protect the protected equipment or the system from being impacted;
the inner shell is used for installing a surge protection element and comprises a partition plate, and the surge protection element is respectively installed on two sides of the partition plate;
the circuit board and the surge protection element form a protection circuit for realizing the electric wiring function and the transmission of failure signals of the product;
the end part of each surge protection element is respectively provided with a low-temperature welding spot, each low-temperature welding spot is respectively connected with a connecting rod, when the surge protection element is effective, the low-temperature welding spot at the end part of the surge protection element is connected with the connecting rod, when the surge protection element fails, the low-temperature welding spot at the end part of the surge protection element is disconnected with the connecting rod, and deviates from the original position through an elastic element matched with the connecting rod;
and the state indicating module is internally provided with a tongue plate, the tongue plate is connected with the connecting rod and drives a microswitch in the state indicating module through the tongue plate, the microswitch is connected with the display module, the microswitch is positioned at different positions according to whether the connecting rod is connected with the low-temperature welding spot at the end part of the surge protection element, and the display module is in different states due to different positions of the connecting rod.
2. The lightning protection device for three-phase alternating current according to claim 1, wherein the number of the surge protection elements is four, and two cavities for installing two surge protection elements are respectively arranged on two sides of the partition board.
3. The lightning protection device for three-phase alternating current according to claim 2, wherein three surge protection elements among the four surge protection elements are connected to the three-phase live wire, respectively, and the other surge protection element is connected to the neutral wire.
4. The lightning protection device for three-phase alternating current according to claim 1, further comprising a discharge tube element for discharging lightning, the discharge tube being electrically connected to the surge protection element.
5. The lightning protection device for three-phase alternating current according to claim 1, wherein the surge protection element is a varistor.
6. The lightning protection device for the three-phase alternating current according to claim 1, wherein the state indicating module is used for generating displacement when a product fails, transmitting indicating change to a display window, and simultaneously pushing the micro switch to act and transmitting a circuit signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223030640.6U CN218850404U (en) | 2022-11-15 | 2022-11-15 | Lightning protection device for three-phase alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223030640.6U CN218850404U (en) | 2022-11-15 | 2022-11-15 | Lightning protection device for three-phase alternating current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218850404U true CN218850404U (en) | 2023-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223030640.6U Active CN218850404U (en) | 2022-11-15 | 2022-11-15 | Lightning protection device for three-phase alternating current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218850404U (en) |
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2022
- 2022-11-15 CN CN202223030640.6U patent/CN218850404U/en active Active
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