A capacitor fast switching switch and its assembly frame structure

Abstract

The present invention relates to the technical field of capacitor fast switching switches, specifically to a capacitor fast switching switch and its assembly frame structure, which solves the problem of arcing when the wires on the capacitor fast switching switch body are disconnected. A capacitor fast switching switch and its assembly frame structure, including a capacitor fast switching switch body, the upper end of the capacitor fast switching switch body is fixedly connected to a wiring row, the upper end of the wiring row is arranged and inserted with four fast disconnect modules, the rear end of the fast disconnect module is inserted with an assembly module, and the rear end of the assembly module is fixedly connected with a clamping block. The fuse inside the fuse module in the present invention is easy to burn out, and the electromagnet connected in series with the fuse inside the fuse module loses power. After the electromagnet loses power, it no longer has magnetic force, and the overall plug-in frame and plug-in block fall downward with gravity, so that the plug-in frame swings downward around the hinge.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor fast switching switches, in particular to a capacitor fast switching switch and an assembly frame structure thereof. Background Art

[0002] Circuit inrush current is a short-term current and voltage fluctuation in the circuit. The size of the inrush current is related to the line impedance. In extreme cases, the inrush current can exceed 100 times the rated current of the appliance. Such a huge inrush current will have a great impact on the life of each appliance on the power grid. In order to reduce the inrush current, people will install capacitors on the power grid. The contactor dedicated to switching capacitors is called a fast switching switch. It controls the closing and opening of the switch to realize the switching on and off of the capacitor. In the existing technology, the capacitor and the fast switching switch are generally combined into a whole, and the overall device is called a capacitor fast switching switch;

[0003] However, the existing capacitor fast-cutting switches are generally connected to various circuits on the power grid through terminal blocks. When a surge fire or other short-circuit occurs in the circuit, the excessive current may cause the terminal block to burn, and the burning of the terminal block will further cause the various wires on the capacitor fast-cutting switch body to burn; the wires on the capacitor fast-cutting switch body may even generate an arc when the circuit is disconnected, and this arc may cause damage to the capacitor fast-cutting switch body. Therefore, it does not meet the existing needs. In this regard, we propose a capacitor fast-cutting switch and an assembly frame structure thereof. Summary of the invention

[0004] The object of the present invention is to provide a capacitor fast switching switch and its assembly frame structure to solve the problem that the capacitor fast switching switch proposed in the above background technology is generally caused by excessive current in the power grid, and the excessive current may cause the terminal block to burn, and the burning of the terminal block will further cause the various wires on the capacitor fast switching switch body to burn; wherein the wires on the capacitor fast switching switch body may even generate an arc when the circuit is disconnected, and this arc may cause damage to the capacitor fast switching switch body.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a capacitor fast switching switch, comprising a capacitor fast switching switch body, a standard contactor is arranged inside the capacitor fast switching switch body, the standard contactor is composed of a fixed plate, a movable plate, an insulating pad and an operating mechanism, a small gap is formed between the movable plate and the fixed plate, the standard contactor is connected to an auxiliary switch through a wire, the upper end of the capacitor fast switching switch body is fixedly connected to a terminal block, the terminal block includes an insulating shell extending to the inside of the capacitor fast switching switch body, an inner clamping cavity is arranged inside the insulating shell, a power-on block is fixedly connected to the bottom end of the inner clamping cavity, both sides of the upper end of the power-on block are fixedly connected to elastic clamps, and the upper end of the elastic clamp is fixedly connected to a clamping block.

[0006] Preferably, the upper end of the capacitor fast switching switch body is fixedly connected with a wiring row, the upper end of the wiring row is arranged and plugged with four fast disconnect modules, the rear end of the fast disconnect module is plugged with an assembly module, and the rear end of the assembly module is fixedly connected with a clamping block;

[0007] The quick disconnect module includes a connection frame inserted on the wiring bank, the upper end of the connection frame is connected to a plug-in frame through a hinge, capacitor wires are arranged inside the plug-in frame and the connection frame, one end of the capacitor wire is fixedly connected to a capacitor power block A, the other end of the capacitor wire is fixedly connected to a capacitor power block B, and the upper and lower sides of one end of the plug-in frame are fixedly connected to plug-in blocks;

[0008] The capacitor power block A is inserted into the inner clamping cavity, and the clamping block is clamped in the clamping slot.

[0009] Preferably, the assembly module includes an outer protective shell, a plug-in slot is provided at the lower end of the outer protective shell, an electromagnet is provided on one side of the plug-in slot, an installation cavity is provided on the lower side of the electromagnet and inside the outer protective shell, and a power connection block is movably provided on one side of the installation cavity.

[0010] Preferably, one end of the power connection block is plugged into and matched with the capacitor power supply block B, and one end of the power connection block is connected to a spring.

[0011] Preferably, the overall gravity of the plug-in block and the plug-in frame is greater than the extension force of the spring.

[0012] Preferably, the plug-in block is inserted into the plug-in slot, one end surface of the plug-in slot is set as a rounded surface, and the other end surface of the plug-in slot is set as an arc surface.

[0013] Preferably, a placement groove is provided at the rear end of the connection frame, and the length and width of the placement groove are the same as the length and width of the plug-in frame.

[0014] Preferably, one end of the capacitor power block B is connected in series with the power connection block through a wire, one end of the fuse module is connected in parallel with the power connection block through a wire, the other end of the fuse module is connected in series with the electromagnet through a wire, and one end of the electromagnet is connected in parallel with the power connection block through a wire.

[0015] Preferably, one end of the power connection block and the electromagnet are both connected in series with a plug port via a wire.

[0016] A fast capacitor switching switch assembly frame structure also includes a power cabinet, wherein a plurality of connecting rails are fixedly connected inside the power cabinet, a connecting frame is mounted on the front end surface of one of the connecting rails, the fast capacitor switching switch body is mounted on another connecting rail, four mounting grooves are provided at the front end of the connecting frame, and the clamping blocks at the rear end of the assembly module are all mounted in the mounting grooves at the front end of the connecting frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present invention, when the current in the overall circuit is too large, the fuse inside the fuse module is easy to burn out, and the electromagnet connected in series with the fuse inside the fuse module loses power. After the electromagnet loses power, it no longer has magnetic force. After losing magnetic force, the electromagnet no longer attracts and fixes the overall plug-in block, and the overall plug-in frame and the plug-in block fall downward with gravity, so that the plug-in frame swings downward around the hinge;

[0019] The length and width of the placement slot are the same as those of the plug-in frame. After the plug-in frame swings downward, the plug-in frame is inserted into the wiring row inside the connection frame as a whole. At this time, the plug-in frame rotates and swings toward the connection frame and closes, so that the capacitor wires therein are stored inside the plug-in frame and the connection frame, thereby preventing the electric spark formed by the excessive current from melting the capacitor wires, and thus preventing the excessive current from causing a breakdown effect on the capacitor fast switching switch body.

[0020] The swing of the plug-in frame accommodates the capacitor wires. This swing and the isolation of the plug-in frame isolate the arc generated when the capacitor power block B and the power connection block are separated, further protecting the capacitor wires and the entire capacitor fast switching switch body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A magnified view of the three-dimensional structure at center A;

[0023] Figure 3 It is a front view cutaway diagram of the quick cutting module and the assembly module as a whole in the present invention;

[0024] Figure 4 For the present invention Figure 3 The enlarged section view at C in the middle;

[0025] Figure 5 For the present invention Figure 3 Frontal section view at B in the middle;

[0026] Figure 6 It is a three-dimensional schematic diagram of the closed quick-cut module of the present invention;

[0027] Figure 7 A three-dimensional schematic diagram of the quick-cutting module of the present invention after closing from another viewing angle;

[0028] Figure 8 This is a circuit control diagram of the fuse module and the electromagnet in the present invention.

[0029] In the figure: 1. power cabinet; 2. capacitor fast switching switch body; 3. connecting rail; 4. fast disconnect module; 401. plug-in frame; 402. connecting frame; 403. capacitor wire; 404. capacitor power block A; 405. capacitor power block B; 406. plug-in block; 407. hinge; 408. slot; 5. assembly module; 501. outer protective shell; 502. plug-in slot; 503. fuse module; 504. electromagnet; 505. installation cavity; 506. power block; 507. spring; 508. wire plug port; 6. connecting frame; 7. card block; 8. terminal block; 801. insulating shell; 802. power block; 803. inner card cavity; 804. elastic card; 805. card block; 9. placement slot. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figures 1 to 8, an embodiment provided by the present invention: a capacitor fast switching switch, including a capacitor fast switching switch body 2, a standard contactor is arranged inside the capacitor fast switching switch body 2, the standard contactor is composed of a fixed plate, a movable plate, an insulating pad and an operating mechanism, a small gap is formed between the movable plate and the fixed plate, wherein the fixed plate and the movable plate respectively contain contacts, which are fixed or moved under the support of the insulating pad, and under the influence of the operating voltage, the movable plate changes from a static state to a moving state, thereby controlling the small gap between the movable plate and the fixed plate, such a setting makes the overall capacitor switching switch closed at the moment when the voltage at both ends of the contact is zero, thereby realizing the capacitor without inrush current input, and disconnected at the moment when the current is zero, thereby realizing the switch contact without arc disconnection, and successfully controlling the instantaneous inrush current generated by input and removal within the minimum value;

[0032] The standard contactor is connected to an auxiliary switch through a wire, and the upper end of the capacitor fast switching switch body 2 is fixedly connected to a terminal block 8, and the terminal block 8 includes an insulating shell 801 extending to the inside of the capacitor fast switching switch body 2, and the inside of the insulating shell 801 is provided with an inner clamping cavity 803, and the bottom end of the inner clamping cavity 803 is fixedly connected to a power block 802, and both sides of the upper end of the power block 802 are fixedly connected to elastic clamps 804, and the upper end of the elastic clamp 804 is fixedly connected to a clamping block 805;

[0033] A capacitor fast switching switch body 2, the upper end of which is fixedly connected with a terminal block 8, the upper end of which is arranged with four fast disconnecting modules 4, the rear end of which is plugged with an assembly module 5, the rear end of which is fixedly connected with a clamping block 7, wherein the assembly module 5 replaces the existing terminal module, wherein the components in the fast disconnecting module 4 and the assembly module 5 cooperate without the need for fastening tools, which makes the connection between the fast disconnecting module 4 and the assembly module 5 quick and convenient;

[0034] The above-mentioned quick disconnect module 4 includes a connection frame 402 inserted into the terminal block 8, the upper end of the connection frame 402 is connected to the plug-in frame 401 through a hinge 407, and capacitor wires 403 are arranged inside the plug-in frame 401 and the connection frame 402, one end of the capacitor wire 403 is fixedly connected to a capacitor power block A404, and the other end of the capacitor wire 403 is fixedly connected to a capacitor power block B405, and the upper and lower sides of one end of the plug-in frame 401 are fixedly connected to plug-in blocks 406;

[0035] When the capacitor power block A404 moves downward, the capacitor power block A404 is inserted into the inner clamping cavity 803, and the clamping blocks 805 are clamped in the clamping slots 408 on both sides of the capacitor power block A404. The elastic clamping member 804 itself has elastic force, and the elastic force of the elastic clamping member 804 makes the clamping block 805 clamped in the clamping slot 408. Through this arrangement, the two clamping blocks 805 can position and fix the entire capacitor power block A 404, thereby preventing the entire quick cut-off module 4 from shaking.

[0036] The assembly module 5 includes an outer protective shell 501, a plug-in slot 502 is provided at the lower end of the outer protective shell 501, an electromagnet 504 is provided on one side of the plug-in slot 502, an installation cavity 505 is provided at the lower end of the electromagnet 504, a power connection block 506 is movably provided on one side of the installation cavity 505, one end of the power connection block 506 is plugged and matched with the capacitor power block B405, and one end of the power connection block 506 is connected to a spring 507;

[0037] The plug-in block 406 is inserted into the plug-in slot 502, and one side end surface of the plug-in slot 502 is set to a rounded inverted surface, and the other side end surface of the plug-in slot 502 is set to an arc surface. This arrangement prevents the plug-in block 406 from being unable to rotate and swing after being inserted into the electromagnet 504, thereby allowing the entire plug-in block 406 to swing downward quickly after losing its magnetic positioning.

[0038] Further, one end of the capacitor power block B405 is connected in series with the power connection block 506 through a wire, one end of the fuse module 503 is connected in parallel with the power connection block 506 through a wire, the other end of the fuse module 503 is connected in series with the electromagnet 504 through a wire, one end of the electromagnet 504 is connected in parallel with the power connection block 506 through a wire, and the power connection block 506 and one end of the electromagnet 504 are both connected in series with a plug port 508 through a wire. The setting of the plug port 508 allows the overall circuit to be connected to an external power source, combined with Figure 4 and Figure 6 It can be seen that the on and off of the fuse module 503 can control the on and off relationship between the capacitor power block B405 and the power connection block 506, that is, if the fuse module 503 is off, the circuit between the capacitor power block B405 and the power connection block 506 is broken, and if the fuse module 503 is on, the circuit between the capacitor power block B405 and the power connection block 506 is on.

[0039] A fast capacitor switching switch assembly frame structure includes a power cabinet 1, wherein a plurality of connecting rails 3 are fixedly connected inside the power cabinet 1, a connecting frame 6 is mounted on the front end surface of one of the connecting rails 3, a fast capacitor switching switch body 2 is mounted on another of the connecting rails 3, and the fast capacitor switching switch body 2 and the connecting frame 6 can be mounted and installed on the plurality of connecting rails 3;

[0040] Four mounting grooves are provided at the front end of the connecting frame 6, and the clamping blocks 7 at the rear end of the assembly module 5 are all installed in the mounting grooves at the front end of the connecting frame 6. This arrangement enables the overall assembly module 5 and the clamping blocks 7 to be fixed to the connecting frame 6 through the clamping parts, thereby enabling the overall assembly module 5 to be spliced ​​and connected to the connecting frame 6.

[0041] The upper end of the terminal block 8 is provided with four mounting slots. When in use, the connection frame 402 and the plug-in frame 401 in the quick disconnect module 4 are first rotated and swung to a vertical structure with respect to each other, and then the capacitor power block A404 at the lower end of the connection frame 402 is inserted into the mounting slot on the terminal block 8, and the rear end of the plug-in frame 401 is inserted into the plug-in slot 502 at the lower end of the outer protective shell 501, wherein the plug-in block 406 at the upper end of the plug-in frame 401 is inserted into the plug-in slot 502;

[0042] By inserting the fuse module 503 at the upper end of the outer protective shell 501, wherein the fuse module 503 is provided with a fuse, the fuse and the electromagnet 504 inside the fuse module 503 are connected in series through a wire, wherein the capacitor power block B405, the power connection block 506 and the plug port 508 are all connected in series, and the plug port 508 is connected to the external power supply through the wire head, so that after the electromagnet 504 is energized, the electromagnet 504 generates a magnetic force to the plug block 405. 06 is attracted and fixed, and then the plug-in block 406 on the upper side of the rear end of the plug-in frame 401 is fixed in the plug-in slot 502. This arrangement enables the capacitor power block B405 and the power block 506 to fit together. The extension elastic force of the spring 507 has a force to push the power block 506 outward. This arrangement further improves the tightness of the fit between the capacitor power block B405 and the power block 506. At this time, the state structure of the assembly module 5 and the quick disconnection module 4 is as follows: Figures 2 to 4 As shown;

[0043] When the current in the overall circuit is too large, the fuse inside the fuse module 503 burns out, and the electromagnet 504 connected in series with the fuse inside the fuse module 503 loses power. After the electromagnet 504 loses power, it no longer has magnetic force. After losing its magnetic force, the electromagnet 504 no longer attracts and fixes the overall plug-in block 406. The overall gravity of the plug-in block 406 and the plug-in frame 401 is much greater than the stretching elastic force of the spring 507. The overall plug-in frame 401 and the plug-in block 406 fall downward with gravity, and then the plug-in frame 401 swings downward around the hinge 407. At this time, the overall quick-cut module 4 state structure is as follows: Figures 5 and 6 As shown;

[0044] A placement groove 9 is provided at the rear end of the connection frame 402, and the length and width of the placement groove 9 are the same as those of the plug-in frame 401. After the plug-in frame 401 swings downward, the plug-in frame 401 is integrally inserted into the wiring row 8 inside the connection frame 402. At this time, the plug-in frame 401 rotates, swings and closes toward the connection frame 402, so that the capacitor wire 403 therein is stored inside the plug-in frame 401 and the connection frame 402, so as to prevent the electric spark formed by the excessive current from melting the capacitor wire 403, so that the excessive current no longer causes a breakdown effect on the capacitor fast switching switch body 2, wherein the swing of the plug-in frame 401 stores the capacitor wire 403, and this swing and the isolation of the plug-in frame 401 isolate the arc generated when the capacitor power block B405 and the power connection block 506 are separated, and further protect the capacitor wire 403 and the overall capacitor fast switching switch body 2;

[0045] When the current in the overall circuit is too large, it indicates that the overall circuit is faulty and the maintenance personnel need to repair the overall circuit. During the maintenance process, the maintenance personnel replace the fuse module 503 and manually lift the downward-swinging plug-in frame 401 upward, so that the plug-in block 406 at one end of the plug-in frame 401 is again inserted into the plug-in slot 502 for reset.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A capacitor fast switching switch, comprising a capacitor fast switching switch body (2), wherein a standard contactor is arranged inside the capacitor fast switching switch body (2), the standard contactor comprises a fixed plate, a movable plate, an insulating pad and an operating mechanism, a small gap is formed between the movable plate and the fixed plate, the standard contactor is connected to an auxiliary switch via a wire, and a terminal block (8) is fixedly connected to the upper end of the capacitor fast switching switch body (2), characterized in that: The terminal block (8) comprises an insulating housing (801) extending into the interior of the capacitor fast switching switch body (2); an inner clamping cavity (803) is provided inside the insulating housing (801); a power supply block (802) is fixedly connected to the bottom end of the inner clamping cavity (803); elastic clamps (804) are fixedly connected to both sides of the upper end of the power supply block (802); and a clamping block (805) is fixedly connected to the upper end of the elastic clamp (804); Four quick-disconnect modules (4) are arranged and inserted at the upper end of the wiring row (8), an assembly module (5) is inserted at the rear end of the quick-disconnect module (4), and a clamping block (7) is fixedly connected to the rear end of the assembly module (5); The quick disconnect module (4) comprises a connection frame (402) inserted into a terminal block (8); the upper end of the connection frame (402) is connected to a plug-in frame (401) via a hinge (407); capacitor wires (403) are provided inside the plug-in frame (401) and the connection frame (402); one end of the capacitor wire (403) is fixedly connected to a capacitor power block A (404); both sides of the capacitor power block A (404) are provided with card slots (408); the other end of the capacitor wire (403) is fixedly connected to a capacitor power block B (405); and the upper and lower sides of one end of the plug-in frame (401) are fixedly connected to plug-in blocks (406); The capacitor power block A (404) is inserted into the inner clamping cavity (803), and the clamping block (805) is clamped in the clamping slot (408); The assembly module (5) comprises an outer protective shell (501), a plug-in slot (502) is provided at the lower end of the outer protective shell (501), an electromagnet (504) is provided on one side of the plug-in slot (502), an installation cavity (505) is provided on the lower side of the electromagnet (504) and located inside the outer protective shell (501), and a power connection block (506) is movably provided on one side inside the installation cavity (505); One end of the power connection block (506) is plugged into and matched with the capacitor power supply block B (405), and one end of the power connection block (506) is connected to a spring (507).

2. The assembly frame structure of a capacitor fast switching switch according to claim 1, characterized in that: The overall gravity of the plug-in block (406) and the plug-in frame (401) is greater than the stretching elastic force of the spring (507).

3. The assembly frame structure of a capacitor fast switching switch according to claim 2 is characterized in that: The plug-in block (406) is inserted into the plug-in slot (502), one end surface of the plug-in slot (502) is configured as a rounded inverted surface, and the other end surface of the plug-in slot (502) is configured as a curved surface.

4. The assembly frame structure of a capacitor fast switching switch according to claim 3 is characterized in that: A placement groove (9) is provided at the rear end of the connection frame (402), and the length and width of the placement groove (9) are the same as the length and width of the plug-in frame (401).

5. The assembly frame structure of a capacitor fast switching switch according to claim 4, characterized in that: One end of the capacitor power block B (405) is plugged and connected in series with the power connection block (506); one end of the fuse module (503) is connected in parallel with the power connection block (506) via a wire; the other end of the fuse module (503) is connected in series with the electromagnet (504) via a wire; and one end of the electromagnet (504) is connected in parallel with the power connection block (506) via a wire.

6. The assembly frame structure of a capacitor fast switching switch according to claim 5, characterized in that: One end of the power connection block (506) and the electromagnet (504) are both connected in series with a wiring port (508) via a wire.

7. The assembly frame structure of a capacitor fast switching switch according to claim 6, characterized in that: It also comprises a power cabinet (1), wherein a plurality of connecting rails (3) are fixedly connected inside the power cabinet (1), wherein a connecting frame (6) is mounted on the front end surface of one of the connecting rails (3), the capacitor fast switching switch body (2) is mounted on another connecting rail (3), the front end of the connecting frame (6) is provided with four mounting grooves, and the clamping blocks (7) at the rear end of the assembly module (5) are all mounted in the mounting grooves at the front end of the connecting frame (6).

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