CN218124311U - Overvoltage protection device - Google Patents
Overvoltage protection device Download PDFInfo
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- CN218124311U CN218124311U CN202222355604.0U CN202222355604U CN218124311U CN 218124311 U CN218124311 U CN 218124311U CN 202222355604 U CN202222355604 U CN 202222355604U CN 218124311 U CN218124311 U CN 218124311U
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- arrester
- overvoltage protection
- clamping portion
- protection device
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Abstract
The utility model provides an overvoltage protection device, which comprises an arrester, a mounting assembly and an insulating base, wherein connecting parts are arranged at two ends of the arrester, and the arrester is electrically connected with a power distribution cabinet so as to perform overvoltage protection on the power distribution cabinet through the arrester; the mounting assembly comprises an elastic clamping piece, and the lightning arrester is detachably connected to the elastic clamping piece through the detachable clamping connection of the elastic clamping piece and the connecting part of the lightning arrester; the insulating base comprises a supporting insulator and a bottom plate, the mounting assembly is detachably fixed to the supporting insulator, the supporting insulator is fixed to the bottom plate, and the overvoltage protection device is fixed to the power distribution cabinet through the bottom plate. The lightning arrester is clamped through the elastic clamping piece instead of being fixedly installed, so that when the lightning arrester is replaced, complex disassembly work is not required, the lightning arrester can be directly taken out by using an insulating tool in a power-on state, system power failure is avoided, or the whole overvoltage protection device is powered off, the whole structure is simple, and the manufacturing cost is low.
Description
Technical Field
The application relates to the technical field of electric appliances, in particular to an overvoltage protection device.
Background
Overvoltage protection devices may be typically installed on power distribution cabinets to protect electrical equipment from high transient overvoltage hazards. Usually fixed mounting has the arrester among the overvoltage protection device, and when the leakage current increase takes place, the condition such as arrester damage probably appears, then need dismantle the change arrester, usually, when dismantling the arrester, for guaranteeing personnel and equipment safety, need break down the power supply to the system earlier, dismantle the change arrester.
In the prior art, in order to reduce the influence of power failure, part of overvoltage protection devices are designed to disconnect the whole protection device from a system, so that the system is not powered off when an arrester is replaced, the system can normally operate, but the system runs at great risk in the state without the protection device; or two or even more sets of protection devices are prepared at the same time to ensure that the system can still normally operate after one protection device is disconnected from the system, but the cost for installing a plurality of protection devices is higher.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the embodiment of the application provides an overvoltage protection device to solve the problem that an existing lightning arrester is difficult to install.
According to a first aspect of embodiments of the present application, there is provided an overvoltage protection device, the device comprising: the lightning arrester is electrically connected with the power distribution cabinet so as to perform overvoltage protection on the power distribution cabinet through the lightning arrester; the mounting assembly comprises an elastic clamping piece, and the lightning arrester is detachably connected to the elastic clamping piece through the elastic clamping piece and detachably clamped and connected with the connecting part of the lightning arrester; the insulating base comprises a supporting insulator and a bottom plate, the mounting assembly is detachably fixed to the supporting insulator, the supporting insulator is fixed to the bottom plate, and the overvoltage protection device is fixed to the power distribution cabinet through the bottom plate.
Optionally, the mounting assembly further includes an electrically conductive L-shaped mounting plate, the mounting plate is detachably fixed on the insulating base, the elastic clamping member is detachably fixed on the mounting plate, an access portion is arranged on the mounting plate, and the lightning arrester is electrically connected with the power distribution cabinet through the access portion so as to perform overvoltage protection on the power distribution cabinet through the lightning arrester.
Optionally, the elastic clamping member includes a first clamping portion, a second clamping portion and an elastic fixing component, the first clamping portion and the second clamping portion are respectively fixed on two sides of the L-shaped mounting plate through the elastic fixing component, so that a clamping groove is formed between the first clamping portion and the second clamping portion, and the clamping groove is detachably connected with the connecting portion of the lightning arrester in a clamping manner, so as to fix the lightning arrester on the elastic clamping member.
Optionally, the first clamping portion and the second clamping portion have a V-shaped opening therebetween, such that the connecting portion of the surge arrester enters the clamping groove through the V-shaped opening.
Optionally, the elastic fixing assembly at least comprises a fixing rod, a spring and a fixing piece, the fixing rod comprises a first end and a second end, the first end of the fixing rod is provided with a stopping portion, the second end of the fixing rod is matched with the fixing piece, and the first clamping portion and the second clamping portion are respectively fixed on two sides of the L-shaped mounting plate; the fixed rod sequentially penetrates through the first clamping portion, the L-shaped mounting plate and the second clamping portion, the spring is sleeved on the fixed rod, and the spring is located between the first clamping portion and the stopping portion or between the second clamping portion and the fixing piece.
Optionally, a second end of the fixing rod is provided with a clamping groove, the fixing member is a circular ring provided with an opening, the fixing rod is sleeved with the circular ring through the opening of the circular ring, and the circular ring is matched with the clamping groove.
Optionally, the second end of the fixing rod is provided with a thread, the fixing member is a nut, and the nut is connected with the thread in a matching manner.
Optionally, the overvoltage protection device further includes a current detector, the current detector is electrically connected to the lightning arrester and is fixedly mounted on the insulating base, and the current detector is configured to monitor a current in the lightning arrester.
The application provides an overvoltage protection device, the device includes: the lightning arrester comprises a lightning arrester, an installation assembly and an insulating base, wherein connecting parts are arranged at two ends of the lightning arrester, the lightning arrester can be installed through the connecting parts, and the lightning arrester is electrically connected with a power distribution cabinet so as to perform overvoltage protection on the power distribution cabinet through the lightning arrester; the mounting assembly comprises an elastic clamping piece, and the lightning arrester is detachably connected to the elastic clamping piece through the detachable clamping connection of the elastic clamping piece and the connecting part of the lightning arrester; the insulating base comprises a supporting insulator and a bottom plate, the mounting assembly is detachably fixed to the supporting insulator, the supporting insulator is fixed to the bottom plate, and the overvoltage protection device is fixed to the power distribution cabinet through the bottom plate. This application is through the connecting portion that elasticity holder pressed from both sides tight arrester to fixed arrester, rather than using the fixed mounting mode, thereby when needs are changed the arrester, need not to carry out complicated dismantlement work, can directly use insulating tool to take out the arrester under the on-state, therefore avoided the system outage, or with whole overvoltage protection device outage, and the overvoltage protection device simple structure of this application, low in manufacturing cost.
Drawings
Fig. 1 is a front view of an overvoltage protection device in accordance with an exemplary embodiment of the present application;
fig. 2 is a left side view of an overvoltage protection device in accordance with an exemplary embodiment of the present application;
fig. 3 is a partial schematic view of an overvoltage protection device in accordance with an exemplary embodiment of the present application;
list of reference numbers:
1. a lightning arrester; 11. a connecting portion; 21. an L-shaped mounting plate; 22. an elastic clamping member; 221. a first clamping portion; 222. a second clamping portion; 223. a V-shaped opening; 224. fixing the rod; 225. a spring; 3. an insulating base; 31. a support insulator; 32. a base plate; 4. and a current detector.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
Before describing the overvoltage protection device according to the embodiment of the present application, an application scenario of the overvoltage protection device is briefly described for easy understanding.
Overvoltage protection devices, which are typically used in ultra high voltage electrical systems above six kilovolts, are typically mounted on a switchgear to protect the electrical equipment in the system from high transient overvoltages. Usually fixed mounting has the arrester among the overvoltage protection device, and when the leakage current increase takes place, the condition such as arrester damage probably appears, then need dismantle the change arrester, usually, when dismantling the arrester, for guaranteeing personnel and equipment safety, need break down the power supply to the system earlier, dismantle the change arrester.
In the prior art, in order to reduce the influence of power failure, part of overvoltage protection devices are designed to disconnect the whole protection device from a system, so that the system is not powered off when an arrester is replaced, the system can normally operate, but the system runs at great risk in the state without the protection device; or two or even more sets of protection devices are prepared at the same time to ensure that the system can still normally operate after one protection device is disconnected from the system, but the cost for installing a plurality of protection devices is higher. In view of the above, the present application provides an overvoltage protection device, which can solve the above problems in the prior art.
Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present embodiment provides an overvoltage protection device, including: arrester 1, installation component and insulating base 3.
The lightning arrester 1 has connecting portions 11 at both ends thereof, and the lightning arrester 1 can be fixed by the connecting portions 11. For example, the connecting portion 11 of the lightning arrester 1 may be a polished rod, the polished rod is clamped by the elastic clamping member 22 to fix the lightning arrester 1, and when the lightning arrester 1 is taken out, the friction force between the polished rod and the elastic clamping member 22 is small, which facilitates the taking out of the lightning arrester 1. The arrester 1 is electrically connected with the power distribution cabinet, so that overvoltage protection can be carried out on the power distribution cabinet through the arrester 1.
The mounting assembly comprises an elastic clamping piece 22, and the lightning arrester 1 is detachably connected on the elastic clamping piece 22 through the elastic clamping piece 22 and detachably clamped and connected with the connecting part 11 of the lightning arrester 1; the insulating base 3 comprises a supporting insulator 31 and a bottom plate 32, the mounting assembly is detachably fixed on the supporting insulator 31, the supporting insulator 31 is fixed on the bottom plate 32, and the overvoltage protection device is fixed on the power distribution cabinet through the bottom plate 32. For example, the fixing manner may be bolt connection, a mounting hole connected to the power distribution cabinet may be formed in the bottom plate 32, and a plurality of supporting insulators 31 may be disposed on one bottom plate 32, so that a plurality of lightning arresters 1 may be mounted, and the specific number of the lightning arresters is not limited in this embodiment. Install overvoltage protection device on the switch board through insulating base 3, can guarantee the personnel and the equipment safety of installation and dismantlement in-process. The supporting insulator 31 can be cylindrical, and the lightning arrester 1 can be far away from the power distribution cabinet through the supporting insulator 31, so that the safety risk caused by contact between the shell of the lightning arrester 1 and the power distribution cabinet is avoided.
In the present embodiment, the connecting portion 11 of the arrester 1 is clamped by the elastic clamping member 22, so as to fix the arrester 1, instead of using a fixed mounting manner, when the arrester 1 needs to be replaced, the arrester 1 can be directly taken out by using an insulating tool in a power-on state without performing complicated disassembling work, thereby avoiding system power-off or powering off the whole overvoltage protection device, and the overvoltage protection device of the present embodiment has a simple structure and is low in manufacturing cost.
In a specific implementation manner, the mounting assembly may further include an electrically conductive L-shaped mounting plate 21, the L-shaped mounting plate 21 is detachably fixed on the insulating base 3, the elastic clamping member 22 is detachably fixed on the mounting plate, and the fixing manner may be bolt fixing, wherein a flat plate in the L-shaped mounting plate 21 is connected with the insulating base 3, and a vertical plate is connected with the elastic clamping member 22, so that the fixing may be more reliable and stable. Can set up the access portion on the mounting panel, access portion can connecting wire to be connected arrester 1 and switch board electricity through access portion, in order to carry out overvoltage protection, maintain electrical equipment's safety to the switch board through arrester 1.
In a specific implementation manner, the elastic clamping member 22 may include a first clamping portion 221, a second clamping portion 222, and an elastic fixing component, for example, the first clamping portion 221 and the second clamping portion 222 may have the same shape and are respectively provided with a groove and a mounting hole, the first clamping portion 221 and the second clamping portion 222 may be respectively fixed on both sides of the L-shaped mounting plate 21 by the elastic fixing component, for example, a mounting hole is provided on a vertical plate of the L-shaped mounting plate 21, the elastic fixing component may sequentially pass through the mounting holes of the first clamping portion 221, the L-shaped mounting plate 21, and the second clamping portion 222, and respectively fix the first clamping portion 221 and the second clamping portion 222 on both sides of the L-shaped mounting plate 21, so that a gap exists between the first clamping portion 221 and the second clamping portion 222, and a clamping groove is formed between the first clamping portion 221 and the second clamping portion 222, and the clamping groove may be jointly formed by the grooves on the first clamping portion 221 and the second clamping portion 222.
When the lightning arrester 1 is fixed, the connecting portion 11 of the lightning arrester 1 can be pressed into the clamping groove from the gap between the first clamping portion 221 and the second clamping portion 222 for fixation, in the process, the first clamping portion 221 and/or the second clamping portion 222 have a certain moving distance in the length direction of the elastic fixing component by the acting force of the elastic fixing component on the first clamping portion 221 and/or the second clamping portion 222, so that when the lightning arrester 1 is taken out or installed, the first clamping portion 221 and/or the second clamping portion 222 move away from the L-shaped mounting plate 21, and after the connecting portion 11 of the lightning arrester 1 enters the clamping groove, the first clamping portion 221 and/or the second clamping portion 222 move close to the L-shaped mounting plate 21 under the action of the elastic fixing component, so that the connecting portion 11 of the lightning arrester 1 is clamped, and the lightning arrester 1 is fixed.
In a specific implementation, a V-shaped opening 223 may be formed between the first clamping portion 221 and the second clamping portion 222, so that the connection portion 11 of the surge arrester 1 enters the clamping groove through the V-shaped opening 223. When the connecting portion 11 of the surge arrester 1 enters the clamping groove from the gap between the first clamping portion 221 and the second clamping portion 222, the V-shaped opening 223 more easily moves the connecting portion 11 of the surge arrester 1 downward, thereby more facilitating the installation of the surge arrester 1.
In a specific implementation manner, the elastic fixing assembly may at least include a fixing rod 224, a spring 225 and a fixing member, the fixing rod 224 includes a first end and a second end, the first end of the fixing rod 224 is provided with a stopper, and the second end of the fixing rod 224 may cooperate with the fixing member to fix the first clamping portion 221 and the second clamping portion 222 on two sides of the L-shaped mounting plate 21, respectively; the fixing rod 224 may sequentially pass through the first clamping portion 221, the L-shaped mounting plate 21 and the second clamping portion 222, the spring 225 is sleeved on the fixing rod 224, the spring 225 may be located between the first clamping portion 221 and the stopping portion, or the spring 225 is located between the second clamping portion 222 and the fixing member. By the contraction of the spring 225, the first clamping portion 221 and/or the second clamping portion 222 can move away from the L-shaped mounting plate 21, so that the arrester 1 can be taken out or mounted, and after the connecting portion 11 of the arrester 1 enters the clamping groove, by the extension of the spring 225, the first clamping portion 221 and/or the second clamping portion 222 can move close to the L-shaped mounting plate 21 under the action of the elastic fixing component, so that the connecting portion 11 of the arrester 1 is clamped, and the arrester 1 is fixed. Springs 225 may be respectively disposed between the first clamping portion 221 and the stopping portion, and between the second clamping portion 222 and the fixing member, which is not limited in this embodiment.
In a concrete implementation, the second end of dead lever 224 can be equipped with the draw-in groove, the mounting is for being equipped with open-ended ring, can locate the ring cover on dead lever 224 through the opening of ring, and the ring cooperatees with the draw-in groove, the external diameter of ring is greater than the diameter of dead lever 224, the internal diameter of ring is less than the diameter of dead lever 224, cooperate with the draw-in groove through ring, can fix first clamping part 221, L type mounting panel 21, second clamping part 222 and spring 225, and simple structure, the assembly of being convenient for.
In a specific implementation manner, the second end of the fixing rod 224 may be provided with a thread, for example, the second end of the fixing rod 224 is provided with a thread with a certain length, the other portion is a polish rod, in the length direction of the fixing rod 224, the length of the polish rod may be less than or equal to the thickness of the first clamping portion 221, the thickness of the riser of the L-shaped mounting plate 21, the thickness of the second clamping portion 222, and the sum of the lengths of the springs 225, so that the first clamping portion 221 and the second clamping portion 222 may move, and the springs 225 may stretch, the fixing member may be a nut, and the nut and the thread are cooperatively connected, so that the first clamping portion 221, the L-shaped mounting plate 21, the second clamping portion 222, and the springs 225 may be fixed, and the structure is simple and the assembly is convenient.
In a specific implementation manner, the overvoltage protection device may further include a current detector 4, and the current detector 4 is electrically connected to the lightning arrester 1 and is fixedly mounted on the insulating base 3. The current condition of the arrester 1 can be monitored by the current detector 4, so that whether the leakage current is increased can be determined.
It should be noted that not all steps and modules in the above flows and system structure diagrams are necessary, and some steps or modules may be omitted according to actual needs. The execution order of the steps is not fixed and can be adjusted as required. The system structure described in the above embodiments may be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by a plurality of physical entities, or some components in a plurality of independent devices may be implemented together.
In the above embodiments, the hardware module may be implemented mechanically or electrically. For example, a hardware module may comprise permanently dedicated circuitry or logic (such as a dedicated processor, FPGA or ASIC) to perform the corresponding operations. A hardware module may also include programmable logic or circuitry (e.g., a general-purpose processor or other programmable processor) that may be temporarily configured by software to perform the corresponding operations. The specific implementation (mechanical, or dedicated permanent, or temporarily set) may be determined based on cost and time considerations.
While the present application has been illustrated and described in detail in the drawings and foregoing description of the preferred embodiments, the present application is not limited to the disclosed embodiments, and it will be apparent to those skilled in the art that various combinations of the code auditing means in the various embodiments described above may be used to obtain further embodiments of the present application, which are also within the scope of the present application.
Claims (8)
1. An overvoltage protection device, comprising:
the lightning arrester comprises a lightning arrester (1), wherein connecting parts (11) are arranged at two ends of the lightning arrester (1), and the lightning arrester (1) is electrically connected with a power distribution cabinet so as to perform overvoltage protection on the power distribution cabinet through the lightning arrester (1);
a mounting assembly comprising a resilient clamping member (22), by means of which the arrester (1) is detachably connected to the resilient clamping member (22) by means of a detachable clamping connection of the resilient clamping member (22) with the connecting portion (11) of the arrester (1);
insulator foot (3), insulator foot (3) are including supporting insulator (31) and bottom plate (32), installation component detachably fixes on supporting insulator (31), supporting insulator (31) are fixed on bottom plate (32), through bottom plate (32) will overvoltage protection device fixes on the switch board.
2. Overvoltage protection device according to claim 1, characterized in that the mounting assembly further comprises an electrically conductive L-shaped mounting plate (21) detachably fixed to the insulating base (3), the elastic clamping member (22) being detachably fixed to the mounting plate, the mounting plate being provided with an access portion through which the arrester (1) is electrically connected to the distribution cabinet for overvoltage protection of the distribution cabinet by the arrester (1).
3. The overvoltage protection device according to claim 2, wherein the elastic clamping member (22) comprises a first clamping portion (221), a second clamping portion (222) and an elastic fixing component, the first clamping portion (221) and the second clamping portion (222) are respectively fixed on two sides of the L-shaped mounting plate (21) through the elastic fixing component, a clamping groove is formed between the first clamping portion (221) and the second clamping portion (222), and the clamping groove is detachably connected with the connecting portion (11) of the lightning arrester (1) in a clamping mode through the clamping groove so as to fix the lightning arrester (1) on the elastic clamping member (22).
4. The overvoltage protection device according to claim 3, characterized in that a V-shaped opening (223) is provided between the first clamping portion (221) and the second clamping portion (222) such that the connection portion (11) of the surge arrester (1) enters the clamping groove through the V-shaped opening (223).
5. The overvoltage protection device according to claim 3 or 4, wherein the elastic fixing assembly comprises at least a fixing rod (224), a spring (225) and a fixing member, the fixing rod (224) comprises a first end and a second end, the first end of the fixing rod (224) is provided with a stop, and the second end of the fixing rod (224) is matched with the fixing member to fix the first clamping portion (221) and the second clamping portion (222) on two sides of the L-shaped mounting plate (21), respectively;
the fixing rod (224) sequentially penetrates through the first clamping portion (221), the L-shaped mounting plate (21) and the second clamping portion (222), the spring (225) is sleeved on the fixing rod (224), the spring (225) is located between the first clamping portion (221) and the stopping portion, or the spring (225) is located between the second clamping portion (222) and the fixing piece.
6. The overvoltage protection device as claimed in claim 5 wherein the second end of the securing bar (224) is provided with a slot, the securing member is a ring having an opening, the ring is sleeved on the securing bar (224) through the opening of the ring, and the ring is engaged with the slot.
7. The overvoltage protection device of claim 5, wherein the second end of the securing rod (224) is threaded, and the securing member is a nut that is matingly coupled to the threads.
8. The overvoltage protection device according to claim 1, further comprising a current detector (4), wherein the current detector (4) is electrically connected to the lightning arrester (1) and is fixedly mounted on the insulating base (3), and wherein the current detector (4) is used for monitoring the current in the lightning arrester (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222355604.0U CN218124311U (en) | 2022-09-05 | 2022-09-05 | Overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222355604.0U CN218124311U (en) | 2022-09-05 | 2022-09-05 | Overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218124311U true CN218124311U (en) | 2022-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222355604.0U Active CN218124311U (en) | 2022-09-05 | 2022-09-05 | Overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218124311U (en) |
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2022
- 2022-09-05 CN CN202222355604.0U patent/CN218124311U/en active Active
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Address after: 214000 b22-a, Wuxi National High tech Industrial Development Zone, Xinwu District, Wuxi City, Jiangsu Province (plant B-2, No. 43 Ximei Road) Patentee after: Siemens Energy Arrester (Wuxi) Co.,Ltd. Address before: 214000 b22-a, Wuxi National High tech Industrial Development Zone, Xinwu District, Wuxi City, Jiangsu Province (plant B-2, No. 43 Ximei Road) Patentee before: Simens Lightning Arrester (Wuxi) Co.,Ltd. |