Main transformer heavy gas tripping two-out-of-three logic device

Abstract

The utility model discloses a main transformer heavy gas tripping two-out-of-three logic device, which relates to the technical field of power equipment, and comprises a device body, an extension plate, a PCB (printed circuit board), a shell, a locking assembly, a pressing assembly, a spring, a locking groove and an n-shaped plate, the extension plate is fixed on one side of the device body, the PCB is fixed on the extension plate, and the pressing assembly is fixed on the shell. The multiple sets of shells are arranged above the PCB at equal intervals, each set of locking assembly is connected to the upper portion of the corresponding set of shell in a sliding mode, each set of pressing assembly is connected to the lower portion of the corresponding set of shell in a sliding mode, and each set of springs is fixed between the corresponding set of locking assembly and the corresponding set of pressing assembly. Automatic pressing and preliminary fixing of the wire core are achieved, manual pressing is not needed, the installation efficiency is greatly improved, the pressing and rotating structure of the locking assembly enables the fixing and unlocking process of the wire core to be simple and rapid, and compared with a traditional screw fixing mode, operation is easier and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a three-choice-two logic device for a main transformer heavy gas trip. Background Art

[0002] In the power system, the transformer is the core equipment for power conversion and transmission, and its operating stability is directly related to the safety and efficiency of the entire power grid. Among them, heavy gas protection is an important protection method for internal faults of the transformer (such as winding short circuit, insulation damage, etc.). When a serious fault occurs inside the transformer, the heavy gas trip will be triggered quickly to cut off the connection between the faulty transformer and the power grid to prevent the accident from expanding;

[0003] The heavy gas tripping is an electrical wiring. The traditional method of fixing the wire core usually uses a terminal plate and a wiring fastening screw. The staff needs to manually press the terminal plate to fix the wire core, and then tighten the wiring fastening screw to fix the wire core. The main transformer heavy gas tripping three-to-two logic device has high wiring reliability requirements for the tripping outlet. The traditional wiring method is complicated and difficult to install, and there are problems such as inadequate fastening and poor contact. For this reason, we proposed a main transformer heavy gas tripping three-to-two logic device with a new wiring structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-choice-two logic device for main transformer heavy gas tripping, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a main transformer heavy gas trip three-choice two logic device, including a device body, and also includes:

[0006] An extension plate, the extension plate being fixed to one side of the device body;

[0007] A PCB board, wherein the PCB board is fixed on the extension plate;

[0008] A plurality of housings are arranged above the PCB board at equal intervals;

[0009] A locking assembly, each group of the locking assemblies being slidably connected to the upper portion of each group of the housing;

[0010] A pressing assembly, each group of the pressing assemblies being slidably connected to the lower part of each group of the outer shell;

[0011] Springs, each group of the springs is fixed between each group of locking components and each group of pressing components, and after each group of locking components is moved down and locked, each group of springs can apply spring force to each group of pressing components to fix the wire core.

[0012] Furthermore, the main transformer heavy gas trip three-choice two logic device also includes:

[0013] Locking grooves, two groups of locking grooves are symmetrically arranged at the inner top of each group of shells;

[0014] Several types of plates, each group of the several types of plates is fixed between each group of shells and the device body.

[0015] Furthermore, the locking assembly comprises:

[0016] A slide bar 1, wherein the slide bar 1 is slidably connected to the upper portion of the housing;

[0017] The upper movable plate is rotatably connected to the lower part of the slide bar 1, and the upper movable plate is slidably connected to the inside of the shell, and the lower part of the upper movable plate is connected to the upper part of the spring.

[0018] Furthermore, the locking assembly further comprises:

[0019] A knob, wherein the knob is fixed on the upper portion of the sliding rod;

[0020] The locking blocks are two groups fixed on the outside of the slide bar 1, and the structures of the two groups of locking blocks and each group of locking grooves are adapted.

[0021] Furthermore, the pressing component includes:

[0022] A second slide bar, wherein the second slide bar is slidably connected to the lower part of the housing, and the lower part of the second slide bar passes through the PCB board;

[0023] The lower moving plate is fixed on the upper part of the second slide bar, the lower moving plate is slidably connected to the inside of the shell, and the upper part of the lower moving plate is connected to the lower part of the spring.

[0024] Furthermore, the pressing component also includes:

[0025] A pressing plate is fixed at the lower part of the second sliding rod and is located above the PCB board.

[0026] Compared with the above-mentioned background technology, the main transformer heavy gas trip three-to-two logic device provided in the present application includes an equipment body, an extension plate, a PCB board, a shell, a locking assembly, a pressing assembly, a spring, a locking groove and several types of plates. The wire core is installed by moving the pressing assembly upward, and then the spring extends to push the pressing assembly to initially press and fix the wire core without manual intervention by the staff. Pressing and rotating the locking assembly can squeeze the spring, and then the spring applies spring force to the pressing assembly to squeeze and fix the wire core.

[0027] Furthermore, a wire hole is provided at the bottom of the pressing component, a through hole is provided on the PCB board, a wire conductor is provided on the wire hole, and a positioning protrusion is inserted into the through hole of the through hole so that the pressing plate fits the surface of the PCB board and the wire conductor is squeezed to fit the circuit on the surface of the PCB board to achieve the function of conductive fixation.

[0028] The utility model provides a three-choice-two logic device for main transformer heavy gas tripping. Compared with the prior art, it has the following beneficial effects:

[0029] The main transformer heavy gas trip three-out-of-two logic device realizes automatic pressing and preliminary fixation of the wire core through the design of pressing components and spring mechanisms. No manual pressing is required, which greatly improves the installation efficiency. The pressing and rotating structure of the locking component makes the fixing and unlocking process of the wire core simple and quick, and is easier to operate than the traditional screw fixing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the three-choice-two logic device for the main transformer heavy gas trip;

[0031] Figure 2 This is a partial structural diagram of the three-choice-two logic device for the main transformer heavy gas trip;

[0032] Figure 3 for Figure 2 A top view of

[0033] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0034] Figure 5 It is a structural diagram of the locking component in the three-choice-two logic device for the main transformer heavy gas trip;

[0035] Figure 6 This is a schematic diagram of the structure of the press component in the three-to-two logic device for the main transformer heavy gas trip.

[0036] Figure 7 Schematic diagram of the installation of PCB and press components in the three-to-two logic device for the main transformer heavy gas trip.

[0037] In the figure: 1. Equipment body; 2. Extension plate; 3. PCB board; 31 through hole; 4. Housing; 5. Locking assembly; 51. Sliding bar 1; 52. Knob; 53. Upper moving plate; 54. Locking block; 6. Pressing assembly; 61. Sliding bar 2; 62. Lower moving plate; 63. Pressing plate; 64. Wire hole; 65. Positioning protrusion; 7. Spring; 8. Locking groove; 9. Plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] See also Figure 1-7 The utility model provides a technical solution for a three-choice-two logic device for a main transformer heavy gas trip: a three-choice-two logic device for a main transformer heavy gas trip, comprising a device body 1, an extension plate 2, a PCB board 3, a housing 4, a locking assembly 5, a pressing assembly 6, a spring 7, a locking groove 8 and a plate 9. Specifically, before the installation of the wire core, the corresponding pressing assembly 6 can be lifted to squeeze the spring 7. After the wire core is placed, the pressing assembly 6 is released, and the spring 7 stretches to push the pressing assembly 6 downward to press the wire core, thereby achieving preliminary fixation without manual pressing. Then, the locking assembly 5 is pressed and rotated to squeeze the spring 7, so that the spring 7 is in a compressed state and applies a spring force to the pressing assembly 6, thereby squeezing and fixing the wire core;

[0040] Each set of housings 4 is fixed to the equipment body 1 through each set of plate 9;

[0041] The extension plate 2 is made of stainless steel, provides fixation and support for the PCB board 3, and is connected to the PCB board 3. The PCB board 3 is the carrier of the device circuit. Chips and other electronic components are arranged on the PCB board 3 to complete the connection of each circuit module.

[0042] The locking assembly 5 includes a slide bar 51, an upper movable plate 53, a knob 52 and a locking block 54. Specifically, pressing the knob 52 causes the slide bar 51 and the upper movable plate 53 to move downward to squeeze the spring 7, and then the two groups of locking blocks 54 enter the housing 4. Since the slide bar 51 and the upper movable plate 53 are rotatably connected, the knob 52 is rotated to make the positions of the two groups of locking blocks 54 and the two groups of locking grooves 8 correspond, so that the spring 7 extends and pushes the two groups of locking blocks 54 into the two groups of locking grooves 8, thereby limiting the position of the upper movable plate 53, and pressing the knob 52 causes the two groups of locking blocks 54 to move out of the two groups of locking grooves 8, and then the knob 52 is rotated in the opposite direction to reset, and then the spring 7 extends and pushes the slide bar 51, the upper movable plate 53 and the two groups of locking blocks 54 to move upward.

[0043] The pressing assembly 6 includes a sliding rod 61, a lower moving plate 62 and a pressing plate 63. Specifically, the pressing plate 63 is used to improve the tightness of the wiring, reduce the contact resistance, and improve the reliability of the wiring.

[0044] The lower part of the pressing component 6 is provided with a wire hole 64, the PCB board 3 is provided with a through hole 31, and the wire hole 64 is provided with a wire conductor. The positioning protrusion 65 is inserted into the through hole of the through hole 31, so that the pressing plate 63 fits the surface of the PCB board 3, and at the same time squeezes the wire conductor to fit the circuit on the surface of the PCB board to achieve the function of conductive fixation.

[0045] In actual use, the three-choice-two logic device for the main transformer heavy gas tripping first moves the pressure plate 63 upward so that the lower movable plate 62 squeezes the spring 7, and then the wire core is installed, and the pressure plate 63 is released so that the spring 7 pushes the lower movable plate 62, the second slide bar 61 and the pressure plate 63 to move downward, automatically pressing and preliminarily fixing the wire core, and then pressing and rotating the knob 52 so that the positions of the two groups of locking blocks 54 and the two groups of locking grooves 8 correspond, so that the spring 7 extends and pushes the two groups of locking blocks 54 into the two groups of locking grooves 8, and the position of the upper movable plate 53 is limited, so that the spring 7 applies spring force to the pressing assembly 6 in a compressed state, thereby squeezing and fixing the wire core.

Claims

1. A three-choice-two logic device for a main transformer heavy gas tripping, comprising a device body (1), characterized in that: Also includes: An extension plate (2), the extension plate (2) being fixed on one side of the device body (1); A PCB board (3), wherein the PCB board (3) is fixed on the extension plate (2); Shells (4), wherein a plurality of groups of the shells (4) are arranged above the PCB board (3) at equal intervals; A locking assembly (5), each group of the locking assemblies (5) being slidably connected to the upper portion of each group of the outer shell (4); A pressing assembly (6), each group of the pressing assemblies (6) being slidably connected to the lower part of each group of the outer shell (4); Springs (7), each group of the springs (7) being fixed between each group of locking components (5) and each group of pressing components (6), and after each group of locking components (5) is moved down and locked, each group of springs (7) can apply a spring force to each group of pressing components (6) to fix the wire core.

2. The main transformer heavy gas trip three-choose-two logic device according to claim 1 is characterized in that: Also includes: Locking grooves (8), two groups of locking grooves (8) are symmetrically arranged at the inner top of each group of housings (4); Several types of plates (9), each group of the several types of plates (9) is fixed between each group of outer shells (4) and the device body (1).

3. The main transformer heavy gas trip three-choice two logic device according to claim 1 is characterized in that: The locking assembly (5) comprises: A sliding rod (51), wherein the sliding rod (51) is slidably connected to the upper part of the housing (4); An upper movable plate (53) is rotatably connected to the lower portion of the slide bar (51), and the upper movable plate (53) is slidably connected to the inside of the housing (4), and the lower portion of the upper movable plate (53) is connected to the upper portion of the spring (7).

4. The main transformer heavy gas trip three-choose-two logic device according to claim 3 is characterized in that: The locking assembly (5) further comprises: A knob (52), wherein the knob (52) is fixed to the upper portion of the first slide bar (51); The locking blocks (54) are two groups of locking blocks (54) fixed on the outside of the first slide bar (51), and the structures of the two groups of locking blocks (54) and each group of locking grooves (8) are compatible.

5. The main transformer heavy gas trip three-choice two logic device according to claim 1 is characterized in that: The pressing component (6) comprises: A second sliding rod (61), the second sliding rod (61) being slidably connected to the lower part of the housing (4), and the lower part of the second sliding rod (61) passing through the PCB board (3); A lower movable plate (62) is fixed on the upper part of the second sliding rod (61), the lower movable plate (62) is slidably connected to the inside of the housing (4), and the upper part of the lower movable plate (62) is connected to the lower part of the spring (7).

6. The main transformer heavy gas trip three-choose-two logic device according to claim 5 is characterized in that: The pressing component (6) further comprises: A pressing plate (63), wherein the pressing plate (63) is fixed to the lower part of the second sliding rod (61), and the pressing plate (63) is located above the PCB board (3).

7. The main transformer heavy gas trip three-choose-two logic device according to claim 1 is characterized in that: The lower part of the pressing component (6) is provided with a wire hole (64), the PCB board (3) is provided with a through hole (31), the wire hole (64) is provided with a wire conductor, and the positioning protrusion (65) is inserted into the through hole of the through hole (31), so that the pressing plate (63) fits the surface of the PCB board (3), and at the same time, the wire conductor is pressed to fit the circuit on the surface of the PCB board, thereby achieving the function of conductive fixation.

Images