CN220934834U

CN220934834U - Electric connection structure of power cable of generator controller

Info

Publication number: CN220934834U
Application number: CN202322448443.4U
Authority: CN
Inventors: 李亚莉; 赵雅周; 黄本孝
Original assignee: Beijing Shuguang Aero Electrical Co ltd
Current assignee: Beijing Shuguang Aero Electrical Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-05-10
Anticipated expiration: 2033-09-08

Abstract

The utility model belongs to the design technology of generator controllers, and relates to an electric connection structure of a power cable of a generator controller. The controller comprises a controller shell (1), a fixed bracket (2), a wire pressing card (3), a cable (4), a wiring lug a (6) and a wiring lug b (7); under the condition of narrow space and shorter power cable, the mode of connecting a plurality of parallel connection and electric connectors is changed into the mode of canceling the electric connectors, the electric connectors are directly led out from the controller through cables, the electric connectors are connected with the generator through lugs, nuts are fixed, the on-board operation is simplified, and the safety and maintainability of the system are improved.

Description

Electric connection structure of power cable of generator controller

Technical Field

The utility model belongs to the design technology of generator controllers, and relates to an electric connection structure of a power cable of a generator controller.

Background

For an electrically excited generator, a generator controller adjusts a magnetic field by adjusting the current of an excitation winding of the generator, so that the output voltage of the generator is stabilized at a set voltage regulation point. Meanwhile, the output voltage of the generator externally outputs the direct-current power supply voltage with voltage regulation precision and quality meeting requirements through a filter circuit carried by the controller. Under the condition that the distance between the generator and the generator controller is relatively short and the external space is relatively narrow, the generator controller and the generator are connected by means of cables and power electric connectors, wherein 7 wires are respectively connected in parallel with B+ and B-, and 7 needles are respectively connected in parallel with the connector. Because the contact resistance exists in the pin hole connection, the contact resistance deviation between each pin and the hole is larger, the current distribution in the parallel circuit is possibly uneven, partial conducting wires are caused to bear current exceeding the rated value of the conducting wires, larger heat is generated, and the connection part forms a relatively closed space due to shielding of the tail accessory, so that the heat dissipation environment is poorer, and the connector is partially overheated and ablated.

Disclosure of Invention

The purpose of the utility model is that:

the cable is directly led out from the controller, so that the hidden trouble of local overheat fault caused by unbalanced distribution of pinholes of the connector due to the fact that a plurality of lead wires are connected in parallel is avoided. And the system assembly links are reduced, and the reliability is improved.

The technical scheme of the utility model is as follows:

The utility model provides a generator controller power cable electrical connection structure, includes controller casing 1, fixed bolster 2, line ball card 3, cable 4, lug a6, lug b7; the fixed bracket 2 is arranged at the position of the interface of the controller shell 1 led out from the outside, the cable 4 passes through the fixed bracket 2, and the inside and the outside are fixed by the wire pressing card 3; 2 wiring lugs a6 and 2 wiring lugs B7 are led out from the inner wires of the outer cable 4 of the controller shell 1 and are connected to the B+, B-, F+ and F-studs of the generator.

The cable 4 comprises a wire and a heat shrinkage tube 5: the wires are gathered into a bundle inside the controller housing 1, and the heat shrinkage tube 5 is sleeved outside.

And 7 No. 12 Rake wires are selected for each of the generators B+ and B-to be connected in parallel.

And F+ and F-are respectively selected from a single 12 # Racton wire.

The B+, B-, F+, F-and 2 wiring lugs a6 and 2 wiring lugs B7 are fixedly connected with bolts through nuts.

The thermal shrinkage tube 5 is calculated to be 50mm from the outer side of the line pressing card 3.

The length of the generator B+ and the generator B-is 260mm, and the length of the generator F+ and the generator F-is 300mm.

The utility model has the advantages that:

The utility model provides an electric connection method for a power cable of a generator controller. In a narrow space, a slave controller is adopted to directly lead out cables, and a multi-strand parallel connection mode is adopted. The newly proposed electrical connection method has small occupied space, simplifies the disassembly and assembly process and improves the maintainability of the system; and the fault hidden trouble of local overheating caused by the difference of contact resistance is eliminated. The manufacturability, the safety and the reliability of the system are improved.

Drawings

Fig. 1 is a circuit diagram of a connection mode of a direct lead-out power cable of a controller according to the present utility model.

Fig. 2 is a schematic connection diagram of the controller power cable of the present utility model.

Wherein: 1-controller shell, 2-fixed bolster, 3-pressure ply-yarn drill, 4-cable, 6-lug a, 7-lug b, 5-pyrocondensation pipe.

Detailed Description

The existing mode of connecting the controller and the cable is integrated, and a specific connection part schematic diagram is shown in fig. 2. Comprises a controller shell 1, a fixed bracket 2, a wire pressing card 3, a cable 4, a wiring lug a6, a wiring lug b7, a heat shrinkage tube 5 and the like.

The cable 4 is directly led out from the controller shell 1, 4 wiring lugs a6 and B7 are led out from the other end of the cable, and the wiring lugs are connected to B+, B-, F+ and F-studs of the generator. The two ends of the cable are respectively provided with a lug, the current value passing through the lug is combined with B+ and B-, 7 12 # Rake wires are respectively selected for B+ and B-to be connected in parallel, and a single 12 # Rake wire is selected for F+ and F-. The connection of the B+, B-, F+, F-and each definition terminal in the controller adopts a lug extraction mode, and is fixedly connected with a bolt by a nut.

The connecting terminals B+, B-, F-inside the output cables are fixed with the components inside through nuts through connecting lugs. The wires are gathered into a bundle inside, and a heat shrinkage tube 5 is sleeved, and a wave-proof sleeve can be additionally arranged if necessary. The external leading-out interface position adopts a fixed cable bracket 2. The cable 4 passes through the fixed cable bracket 2 and is fixed by the wire pressing card 3.

The cable heat shrinkage sleeve is only 50mm from the outer side of the line pressing clamp, namely, the cable bifurcation point is located at the position 50mm outside the line pressing clamp. The length of the cable led out is calculated by taking the outer side surface of the line pressing card as a reference, the length of the generator B+ and B-is 260mm, and the length of the excitation F+ and F-is 300mm. And (5) adding identification sleeves at each definition end of the leading-out end part, and welding the wiring lugs.

Claims

1. The electric connection structure of the power cable of the generator controller is characterized by comprising a controller shell (1), a fixed bracket (2), a line pressing card (3), a cable (4), a wiring lug a (6) and a wiring lug b (7); the fixed support (2) is arranged at the position of an external lead-out interface of the controller shell (1), and the cable (4) penetrates out of the fixed support (2) and is fixed by the inner and outer wire pressing cards (3); 2 wiring lugs a (6) and 2 wiring lugs B (7) are led out from the inner lead of the outer cable (4) of the controller shell (1) and are connected to the B+, B-, F+ and F-studs of the generator.

2. The generator controller power cable electrical connection structure according to claim 1, wherein the cable (4) comprises a wire, a heat shrink tube (5): the wires are clustered inside the controller shell (1), and the heat shrinkage tube (5) is sleeved outside the controller shell.

3. The electrical connection of generator controller power cables of claim 1, wherein the generators b+, B-each select 7 raynaud wires No. 12 in parallel.

4. The generator controller power cable electrical connection structure of claim 1, wherein each of the F +, F-selects a single number 12 rayn wire.

5. The electric connection structure of the power cable of the generator controller according to claim 1, wherein b+, B-, f+, F-are fixedly connected with 2 lugs a (6) and 2 lugs B (7) by nuts and bolts.

6. The generator controller power cable electrical connection structure according to claim 2, characterized in that the heat shrink tubing (5) is left 50mm calculated from outside the wire clip (3).

7. The generator controller power cable electrical connection structure of claim 1, wherein the generator b+, B-length is 260mm and the f+, F-length is 300mm.