Low-voltage electric energy quality module convenient for wiring and installation

Abstract

The utility model relates to the technical field of electric energy quality equipment of an electric power system, in particular to a low-voltage electric energy quality module convenient for wiring and installation. The front end and the rear end of the shell are open, the side plates are installed at the front end and the rear end of the shell, the capacitor is installed on the lower portion in the shell, and the electric reactor is installed in the shell and located on the left side of the capacitor. According to the utility model, the original low-voltage power quality module structure is scientifically and reasonably improved, the moving contact and the power connection copper buckle are arranged at the right end of the shell, and the guide rail tray, the side buckle plate, the static contact and the power connection terminal are arranged at the outer side of the shell; according to the low-voltage electric energy quality module and the low-voltage switch cabinet, modularized wiring installation operation between the low-voltage electric energy quality module and the low-voltage switch cabinet can be achieved, the workload and difficulty of installation and disassembly of the low-voltage electric energy quality module are effectively reduced, meanwhile, a plug-in type power connection mode is adopted, the problem of poor power connection is avoided, and therefore the stability of wiring installation of the low-voltage electric energy quality module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power quality equipment in power systems, and particularly relates to a low-voltage power quality module that is convenient for wiring and installation. Background Art

[0002] The low-voltage power quality module is a harmonic suppression type reactive power compensation device composed of low-voltage power capacitors, reactors, and electronic switches (such as power thyristor switch units, microcontrollers, and sensor units), and adopts a liquid crystal display, with intuitive and convenient operation. A reactor is connected in series in this device, which can effectively suppress current harmonics of the 3rd order and above. It can be controlled by an external controller through a DC level signal or RS485 networking, or it can independently collect and calculate parameters such as system voltage, current, active power, reactive power, and power factor, and operate through the RS485 interface for networking.

[0003] However, the existing low-voltage power quality modules still have deficiencies:

[0004] First of all, the primary power supply of the existing low-voltage power quality module uses a terminal block and a cable to access the 0.4 kV power system. When the device is damaged, it is necessary to replace the entire low-voltage power quality module by disassembling and installing a large number of screws, and the entire replacement process is time-consuming and laborious, with poor convenience and not being convenient for the actual operation and use of the low-voltage power quality module.

[0005] Secondly, the terminal block of the low-voltage power quality module and the connected primary cable are fixed by screws. Screw-type installation may have problems such as screw corrosion and screw slipping. At the same time, due to uneven force when the screw is screwed in, the contact between the access terminal and the cable copper nose may not be well-fitted. Content of the Utility Model

[0006] The purpose of the utility model is to propose a low-voltage power quality module that is convenient for wiring and installation in order to solve the technical defect problems described in the above-mentioned prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A low-voltage power quality module that is convenient for wiring and installation, including a housing with open ends at the front and rear, side plates installed on the front and rear ends of the housing, a capacitor installed below the interior of the housing, a reactor installed inside the housing and on the left side of the capacitor, an electronic switch installed in the middle of the left end of the housing, and a molded case circuit breaker installed on the upper end of the housing. A moving contact penetrating the housing is installed above the right end of the housing, and a plurality of power connection copper buckles are installed inside the moving contact. The plurality of power connection copper buckles are electrically connected to the reactor, the electronic switch, and the molded case circuit breaker through power connection copper bars. A modular installation mechanism for convenient power connection and installation of the housing is provided between the lower end, the right end of the housing, and the moving contact.

[0009] As a further description of the above technical solution:

[0010] The module mounting mechanism includes a base integrally fixed to the lower end of the housing, a guide rail tray movably mounted at the lower end of the base through a guiding portion, a side buckle plate integrally fixed to the right end of the guide rail tray and covering the right end face of the housing, a static contact mounted on the side buckle plate and facing the moving contact, and a power connection terminal mounted inside the static contact and buckled with a plurality of power connection copper buckles.

[0011] As a further description of the above technical solution:

[0012] The guiding portion includes guiding blocks symmetrically fixed on both sides inside the guide rail tray and penetrating the base inward, and guiding grooves opened at the front and rear ends of the guide rail tray and corresponding to the guiding blocks.

[0013] As a further description of the above technical solution:

[0014] Both sides of the left end of the base and both sides of the left end of the guide rail tray are integrally fixedly connected with fixing buckle pieces bent outward at 90°, and circular holes are opened in the middle of the fixing buckle pieces.

[0015] As a further description of the above technical solution:

[0016] A handle protruding outward is installed in the middle of the left end of the base.

[0017] As a further description of the above technical solution:

[0018] A plurality of mounting holes distributed in a rectangular array are opened in the middle of the guide rail tray.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0020] In the present utility model, the original low-voltage power quality module structure is scientifically and reasonably improved. A moving contact and power connection copper buckles are arranged at the right end of the housing. At the same time, a guide rail tray, a side buckle plate, a static contact and a power connection terminal are arranged outside the housing. The guide rail tray can be fixedly installed at a fixed point inside the low-voltage switchgear through fasteners. A plurality of power connection terminals on the static contact can establish connections with the circuits inside the low-voltage switchgear. The whole housing can be horizontally slid into the guide rail tray through the base. When the side buckle plate is buckled to the right end of the housing, the power connection terminals on the static contact can be slid into the power connection copper buckles on the moving contact, realizing the electrical connection between the low-voltage power quality module and the low-voltage switchgear. This structure can realize the modular wiring installation operation between the low-voltage power quality module and the low-voltage switchgear, effectively reducing the workload and difficulty of installation and disassembly of the low-voltage power quality module. At the same time, the plug-in power connection method is adopted, avoiding the occurrence of poor power connection problems, thereby improving the stability of the wiring installation of the low-voltage power quality module. Brief Description of the Drawings

[0021] Figure 1 FIG. is a three - dimensional disassembly schematic diagram of a low - voltage power quality module for convenient wiring and installation proposed by the present utility model;

[0022] Figure 2 FIG. is a three - dimensional combination schematic diagram of the low - voltage power quality module in the present utility model;

[0023] Figure 3 FIG. is an internal schematic diagram of the housing after the side plate is removed in the present utility model;

[0024] Figure 4 FIG. is a structural schematic diagram of the guide rail tray and the static contact in the present utility model.

[0025] Legend Explanation:

[0026] 1. Housing; 101. Base; 102. Guide groove; 103. Handle; 104. Side plate; 2. Guide rail tray; 201. Side buckle; 202. Guide block; 203. Mounting hole; 3. Static contact; 301. Power connection terminal; 4. Capacitor; 5. Reactor; 6. Electronic switch; 7. Molded case circuit breaker; 8. Moving contact; 801. Power connection copper buckle; 9. Power connection copper busbar; 10. Fixed buckle piece. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , the present utility model provides a technical solution: a low - voltage power quality module for convenient wiring and installation, including a housing 1 with open front and rear ends, side plates 104 installed on the front and rear ends of the housing 1, a capacitor 4 installed below the interior of the housing 1, a reactor 5 installed inside the housing 1 and on the left side of the capacitor 4, an electronic switch 6 installed in the middle of the left end of the housing 1, and a molded case circuit breaker 7 installed on the upper end of the housing 1. A moving contact 8 penetrating the housing 1 is installed above the right end of the housing 1, and a plurality of power connection copper buckles 801 are installed inside the moving contact 8. The plurality of power connection copper buckles 801 are electrically connected to the reactor 5, the electronic switch 6, and the molded case circuit breaker 7 through a power connection copper busbar 9. A modular installation mechanism for convenient power connection and installation of the housing 1 is provided between the lower end, the right end of the housing 1, and the moving contact 8.

[0029] Specifically, as Figures 1-4As shown in the figure, the module mounting mechanism includes a base 101 integrally fixed to the lower end of the housing 1, a guide rail tray 2 movably mounted on the lower end of the base 101 through a guiding portion, a side clamping plate 201 integrally fixed to the right end of the guide rail tray 2 and covering the right end face of the housing 1, a static contact 3 mounted on the side clamping plate 201 and facing the moving contact 8, and a power connection terminal 301 mounted inside the static contact 3 and engaged with a plurality of power connection copper buckles 801. Among them, after the side clamping plate 201 is buckled to the right end of the housing 1, the power connection part between the power connection terminal 301 and the power connection copper buckle 801 can be covered, effectively preventing the power connection parts of the moving contact 8 and the static contact 3 from being directly exposed to the external environment, thereby reducing the occurrence of power connection part electro-corrosion and rusting problems.

[0030] Among them, the guiding portion includes guiding blocks 202 symmetrically fixed on both sides inside the guide rail tray 2 and penetrating the base 101 inward, and guiding grooves 102 opened at the front and rear ends of the guide rail tray 2 and corresponding to the guiding blocks 202. The setting of the guiding blocks 202 and the guiding grooves 102, on the one hand, facilitates the positioning and assembly operation between the base 101 and the guide rail tray 2, and on the other hand, after the base 101 slides into the guide rail tray 2, it can limit the degree of freedom of the overall housing 1 in the Y-axis direction on the guide rail tray 2.

[0031] Specifically, as Figures 1-4 shown, fixing tabs 10 bent outward at 90° are integrally fixed and connected to both sides of the left end of the base 101 and both sides of the left end of the guide rail tray 2. A round hole is opened in the middle of the fixing tab 10. When the base 101 completely slides onto the guide rail tray 2, the fixing tabs 10 on the base 101 and the fixing tabs 10 on the guide rail tray 2 will fit together. At this time, the two fixing tabs 10 can be fixed together by fixing methods such as bolts, cable ties or limit insertion buckles, so as to prevent the base 101 from sliding horizontally in the guide rail tray 2.

[0032] Among them, a protruding handle 103 is installed in the middle of the left end of the base 101, which is convenient for the operator to hold and push and pull the housing 1, so as to facilitate the operator to slide the base 101 onto the guide rail tray 2 or slide the base 101 off the guide rail tray 2.

[0033] At the same time, a plurality of mounting holes 203 distributed in a rectangular array are opened in the middle of the guide rail tray 2, which is convenient for the guide rail tray 2 to be fixedly installed at a fixed point on a low-voltage switchgear cabinet or other equipment that requires the use of a low-voltage power quality module.

[0034] Working principle: When performing the wiring and installation operation between the low-voltage power quality module and the low-voltage switchgear cabinet, the first step: the guide rail tray 2 is fixedly installed at a fixed point on the designated station of the low-voltage switchgear cabinet through fasteners and mounting holes 203, and then the circuit in the low-voltage switchgear cabinet is electrically connected to the power connection terminal 301 on the static contact 3 through a cable;

[0035] Step 2: The operator holds the handle 103 on the base 101 with the hand, and slides the guiding groove 102 on the base 101 horizontally towards and into the guiding block 202 on the guide rail tray 2, so that the housing 1 can be horizontally slid into the space between the guide rail tray 2 and the side buckling plate 201. When the side buckling plate 201 on the guide rail tray 2 buckles on the right end of the housing 1, the electrical connection copper buckle 801 on the moving contact 8 will slide and buckle onto the electrical connection terminal 301 on the static contact 3. At this time, the circuit between the low-voltage power quality module and the low-voltage switchgear will be connected;

[0036] Step 3: Use fixing methods such as bolts, cable ties or limit insertion buckles to fix the fixing buckle pieces 10 on the base 101 and the guide rail tray 2 together, to prevent the low-voltage power quality module from displacing or shaking on the guide rail tray 2 when the low-voltage power quality module is working.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A low-voltage power quality module that is convenient for wiring and installation, comprising a housing (1) with an open front and rear end, a side plate (104) installed on the front and rear ends of the housing (1), a capacitor (4) installed at the lower part of the housing (1), a reactor (5) installed inside the housing (1) and located on the left side of the capacitor (4), an electronic switch (6) installed in the middle of the left end of the housing (1), and a molded case circuit breaker (7) installed at the upper end of the housing (1), characterized in that: A moving contact (8) penetrating the housing (1) is mounted above the right end of the housing (1); a plurality of copper power connection buckles (801) are mounted on the inner side of the moving contact (8); the plurality of copper power connection buckles (801) are connected to the reactor (5), the electronic switch (6) and the molded case circuit breaker (7) via a copper power connection bar (9); and a molded assembly mechanism for convenient electrical connection and installation of the housing (1) is arranged between the lower end and the right end of the housing (1) and the moving contact (8).

2. A low-voltage power quality module that is convenient for wiring and installation according to claim 1, characterized in that: The mold-mounting mechanism comprises a base (101) integrally fixed to the lower end of the housing (1), a guide rail tray (2) movably mounted on the lower end of the base (101) via a guide portion, a side buckle plate (201) integrally fixed to the right end of the guide rail tray (2) and covering the right end surface of the housing (1), a stationary contact (3) mounted on the side buckle plate (201) and facing the moving contact (8), and an electrical connection terminal (301) mounted on the inner side of the stationary contact (3) and buckled with a plurality of electrical connection copper buckles (801).

3. A low-voltage power quality module that is convenient for wiring and installation according to claim 2, characterized in that: The guide portion comprises guide blocks (202) symmetrically fixed on both sides of the guide rail tray (2) and penetrating the base (101) inwardly, and guide grooves (102) formed at the front and rear ends of the guide rail tray (2) and corresponding to the guide blocks (202).

4. A low-voltage power quality module that is convenient for wiring and installation according to claim 2, characterized in that: Both sides of the left end of the base (101) and both sides of the left end of the guide rail tray (2) are integrally fixedly connected with a fixing buckle (10) bent outwards at 90 degrees, and a circular hole is opened in the middle of the fixing buckle (10).

5. A low-voltage power quality module that is convenient for wiring and installation according to claim 2, characterized in that: A handle (103) protruding outwards is installed at the middle of the left end of the base (101).

6. A low-voltage power quality module that is convenient for wiring and installation according to claim 2, characterized in that: A plurality of mounting holes (203) distributed in a rectangular array are provided in the middle of the guide rail tray (2).

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