Large-current compact voltage limiter

Abstract

The utility model discloses a large-current compact voltage limiter, which comprises three groups of voltage limiters arranged in parallel, each voltage limiter comprises a direct-current capacitor module and an alternating-current capacitor module, the direct-current capacitor module and the alternating-current capacitor module are electrically connected through a diode module, and the diode module is connected with an absorption capacitor module; the input end of the AC capacitor module and the output end of the DC capacitor module are respectively connected with an AC input copper bar and a DC output copper bar. According to the utility model, the three groups of voltage limiters are connected in parallel, each group of voltage limiters adopts a modular structure, so that the assembly steps can be simplified, and the parts of the voltage limiters are connected in parallel after being assembled and formed, so that the installation space among the structures is compressed to the greatest extent, and the compactness and the strength of the whole structure are improved; through the compact modular design, the assembly steps are simplified, the material production time is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to voltage limiter technical field, concretely relates to a big current compact voltage limiter. BACKGROUND

[0002] Voltage limiter is the important protection electric appliance of electric power system, is used to protect electric power system electric appliance equipment from the damage of overvoltage. The characteristic of voltage limiter determines the insulation and equipment cost of electric power system, with the development of electric power system, increasing the current capacity of voltage limiter and improving its operation reliability are very important to the insulation coordination of electric power system, the method for increasing the current capacity of voltage limiter currently adopts increasing the size of resistance sheet or directly parallelly connecting multiple resistance sheet columns on mechanical structure, which will lead to the relatively loose structure of big current voltage limiter, the non-compactness between three phases, the internal space is rich, which leads to the high volume, weight and manufacturing cost of voltage limiter, and insufficient overall strength. SUMMARY

[0003] In view of the defects in the prior art, the utility model aims at providing a big current compact voltage limiter, the overall structure of the voltage limiter is compact, and the assembly steps and production time are simplified by adopting modular design.

[0004] The utility model adopts the technical scheme: a big current compact voltage limiter, including three groups of voltage limiters arranged in parallel, three groups of voltage limiters constitute U-phase voltage limiter, V-phase voltage limiter and W-phase voltage limiter respectively, the voltage limiter includes DC capacitor module and AC capacitor module, and the DC capacitor module and AC capacitor module are electrically connected through diode module, and the diode module is connected with absorption capacitor module, and the input end of AC capacitor module and the output end of DC capacitor module are connected with AC input copper bar and DC output copper bar respectively.

[0005] The technical scheme adopts three groups of voltage limiters in parallel, each group of voltage limiter adopts modular structure to simplify assembly steps, and the voltage limiter is connected in parallel after each component is assembled, so that the installation space between structures is compressed to the maximum, which is beneficial to improve the compactness of the overall structure and the structural strength of the overall structure, and through the compact modular design, the assembly steps are simplified, the material production time is reduced, and the production efficiency is improved.

[0006] Preferably, the DC capacitor module and the diode module, the AC capacitor module and the diode module, and the input end of the AC capacitor module and the AC input copper bar are electrically connected through screws and copper bars.

[0007] Preferably, the diode module and the absorption capacitor module are electrically connected through high-temperature wires.

[0008] Preferably, the assembly assembly further comprises front and rear spaced apart side fixing frames, the assembly space is formed between the two side fixing frames, and three groups of voltage limiters are fixed in the assembly space.

[0009] Preferably, a crossbeam support for fixing the absorption capacitor module is arranged between the two side fixing frames.

[0010] Preferably, the side fixing frame is further provided with a bottom support fixed with the voltage limiter at the lower end of each voltage limiter.

[0011] Preferably, the side fixing frame is further provided with a positioning frame for fixing the DC output copper bar.

[0012] The utility model discloses a three groups of voltage limiters are connected in parallel, each group of voltage limiter adopts modular structure to simplify assembly steps, and the voltage limiter is connected in parallel after each component is assembled, so that the installation space between structures is compressed to the maximum, the overall structure compactness and the structure strength of the overall structure are improved, the assembly steps are simplified through compact modular design, material production working hours are reduced, production efficiency is improved, and the utility model has higher practical value. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0014] Figure 1 The utility model discloses a three groups of voltage limiters are connected in parallel, each group of voltage limiter adopts modular structure to simplify assembly steps, and the voltage limiter is connected in parallel after each component is assembled, so that the installation space between structures is compressed to the maximum, the overall structure compactness and the structure strength of the overall structure are improved, the assembly steps are simplified through compact modular design, material production working hours are reduced, production efficiency is improved, and the utility model has higher practical value. Figure 1 .

[0015] Figure 2 The utility model discloses a three groups of voltage limiters are connected in parallel, each group of voltage limiter adopts modular structure to simplify assembly steps, and the voltage limiter is connected in parallel after each component is assembled, so that the installation space between structures is compressed to the maximum, the overall structure compactness and the structure strength of the overall structure are improved, the assembly steps are simplified through compact modular design, material production working hours are reduced, production efficiency is improved, and the utility model has higher practical value.

[0016] Figure 3 The utility model discloses a three groups of voltage limiters are connected in parallel, each group of voltage limiter adopts modular structure to simplify assembly steps, and the voltage limiter is connected in parallel after each component is assembled, so that the installation space between structures is compressed to the maximum, the overall structure compactness and the structure strength of the overall structure are improved, the assembly steps are simplified through compact modular design, material production working hours are reduced, production efficiency is improved, and the utility model has higher practical value.

[0017] Reference numerals: voltage limiter 100, DC capacitor module 110, AC capacitor module 120, diode module 130, absorption capacitor module 140, AC input copper bar 150, DC output copper bar 160, side fixing frame 200, bottom support 300. DETAILED DESCRIPTION

[0018] The technical solutions of the utility model will be described below in detail with reference to the drawings. The following examples are only used to make the technical solutions of the utility model clearer, and therefore only serve as examples, but cannot limit the protection scope of the utility model.

[0019] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the technical personnel in the field to which the utility model belongs.

[0020] As shown in the drawings, Figures 1 to 3 The utility model discloses a kind of high-current compact voltage limiters 100, can be designed according to functional module, simplify assembly step by the compact modular design, reduce material cost and production working hours;Three groups of voltage limiters 100 are arranged in parallel, and three groups of voltage limiters 100 respectively constitute U-phase voltage limiter, V-phase voltage limiter and W-phase voltage limiter;The voltage limiter 100 includes DC capacitor module 110 and AC capacitor module 120, DC capacitor module 110 and AC capacitor module 120 are electrically connected by diode module 130, and diode module 130 is connected with absorption capacitor module 140;AC capacitor module 120 input end and DC capacitor module 110 output end are respectively connected with AC input copper bar 150 and DC output copper bar 160.

[0021] As shown in the drawings, Figures 1 to 3 As shown in the drawings, by the above setting, three groups of voltage limiters 100 are adopted in parallel in the embodiment, and each group of voltage limiter 100 adopts modular structure to simplify assembly step, and voltage limiter 100 is connected in parallel after each component is assembled, maximum compression is carried out between each structure installation space, beneficial to improve the compactness of overall structure and the structural strength of overall structure, and the assembly step is simplified by the compact modular design, material production working hours are reduced, and production efficiency is improved;In addition, product input end and output end are connected using AC input copper bar 150 and DC output copper bar 160, and adapt to high-current working condition environment.

[0022] To improve the connection stability between each module in voltage limiter 100, DC capacitor module 110 and diode module 130, AC capacitor module 120 and diode module 130, AC capacitor module 120 input end and AC input copper bar 150 are electrically connected by screw copper bar in the embodiment. Screw copper bar structure ensures the safety used under high-current environment, and the connection assembly stability is higher. At the same time, diode module 130 and absorption capacitor module 140 are electrically connected by high-temperature wire.

[0023] Example two

[0024] As shown in the drawings, Figures 1 to 3As shown, the embodiment also provides an assembly component for installing the above structure, the assembly component comprising front and rear spaced side fixing frames 200, forming an assembly space between the two side fixing frames 200, so that the three groups of voltage limiters 100 are fixed in the assembly space; a cross beam support for fixing the absorption capacitor module 140 is arranged between the two side fixing frames 200. The cross beam support ensures the stability of the installation of the absorption capacitor module 140, and the side fixing frame 200 is also provided with a bottom support 300 fixed with the voltage limiter 100 at the lower end of each voltage limiter 100. The bottom support 300 can fix the bottom of the three groups of parallelly arranged voltage limiters 100, and the overall structural strength is higher; the side fixing frame 200 is provided with a positioning frame for fixing the DC output copper bar 160, ensuring the stability of the installation of the DC output copper bar.

[0025] When assembling the voltage limiter, the steps are as follows:

[0026] The AC input copper bar is connected with the AC capacitor module by a copper bar through a screw.

[0027] The diode module is connected with the DC capacitor module by a copper bar through a screw.

[0028] The diode module is connected with the AC capacitor module by a copper bar through a screw.

[0029] The absorption capacitor module is connected with the two side supports by a cross beam support through a screw.

[0030] The AC capacitor module and the diode module are respectively connected with the two side fixing frames through a screw.

[0031] The diode module is connected with the absorption capacitor module by a high-temperature wire.

[0032] After assembling the three groups of voltage limiters, the U-phase voltage limiter, the V-phase voltage limiter and the W-phase voltage limiter are assembled in parallel to form an integral whole, and in the above assembly steps, the operation steps are simple and efficient, and the size of the finished product is more compact.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A high-current compact voltage limiter (100), characterized in that, It includes three sets of voltage limiters (100) arranged in parallel, and the three sets of voltage limiters (100) respectively constitute the U-phase voltage limiter, the V-phase voltage limiter and the W-phase voltage limiter; The voltage limiter (100) includes a DC capacitor module (110) and an AC capacitor module (120), which are electrically connected through a diode module (130). The diode module (130) is connected to an absorption capacitor module (140). The input terminal of the AC capacitor module (120) and the output terminal of the DC capacitor module (110) are respectively connected to an AC input copper busbar (150) and a DC output copper busbar (160).

2. The high-current compact voltage limiter (100) according to claim 1, characterized in that, The DC capacitor module (110) and the diode module (130), the AC capacitor module (120) and the diode module (130), and the input terminal of the AC capacitor module (120) and the AC input copper busbar (150) are all electrically connected by screws to the copper busbar.

3. The high-current compact voltage limiter (100) according to claim 1, characterized in that, The diode module (130) and the absorption capacitor module (140) are electrically connected by a high-temperature wire.

4. The high-current compact voltage limiter (100) according to claim 1, characterized in that, It also includes an assembly assembly, which includes side mounting brackets (200) arranged at intervals, forming an assembly space between the two side mounting brackets (200), and three sets of voltage limiters (100) are fixed in the assembly space.

5. The high-current compact voltage limiter (100) according to claim 4, characterized in that, A crossbeam support for fixing the absorption capacitor module (140) is provided between the two side fixing frames (200).

6. The high-current compact voltage limiter (100) according to claim 4, characterized in that, The side fixing bracket (200) is also provided with a bottom bracket (300) at the lower end of each voltage limiter (100) and fixed to the voltage limiter (100).

7. The high-current compact voltage limiter (100) according to claim 4, characterized in that, The side fixing frame (200) is equipped with a positioning frame for fixing the DC output copper busbar (160).

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