CN202503463U

CN202503463U - Oil-immersed star delta starter

Info

Publication number: CN202503463U
Application number: CN201220176103XU
Authority: CN
Inventors: 李斗占
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2012-10-24
Anticipated expiration: 2022-04-24

Abstract

An oil-immersed star delta starter is characterized in that the lower part of an fuel tank is equipped with insulating oil, the upper part of the fuel tank is equipped with a manual shaft of which the right end is extended out of the fuel tank, and three movable contacts are arranged on the manual shaft uniformly; a bracket A and a bracket B are arranged at the two sides of the manual shaft respectively and are both equipped with static contacts corresponding to the movable contacts, the static contacts on the bracket A are in short circuit connections mutually via shorting stubs, and the static contacts and movable contacts are all immersed in the insulating oil in the fuel tank. The oil-immersed star delta starter of the utility model enables the star delta starting of a motor to be realized in a manner of connecting the movable contacts, the static contacts, the motor and a three-phase power supply, substitutes a coil in the prior art, and avoids the labor-hours loss caused by needing to wind the coil again when the coil is burnt out; and at the same time, by arranging the static contacts and the movable contacts in the insulating oil, the safety accidents caused by the arcs generated between the static contacts and the movable contacts are prevented.

Description

A kind of oil immersed type star-delta starter

Technical field

The utility model relates to the motor starter that big machinery is used, a kind of specifically oil immersed type star-delta starter.

Background technology

Motor is the power resources of most machineries in the industry; And can motor directly start; There is certain regulation in country, and the motor below two, 30 kilowatts can across-the-line starting, surpasses must starting indirectly of this power; And the motor power (output) of the big machinery in the commercial production is very big, therefore can only adopt starter to start indirectly.

In the prior art, the line bag of motor starter often burns out, and not only influences production efficiency, and is simultaneously also very dangerous.The patent No. is that 20052003560.9 patent document discloses a kind of manual star-delta starter; Moving contact and static contact panel through in starter, being provided with cooperate the star triangle starting that realizes motor; This patent is used moving contact and static contact panel for the problem that burns out that solves the line bag and is replaced line bag of the prior art; Alleviated the problem that burns out of starter to a certain extent; But because contact and touch panel all leak in air cruelly, so it is possible also to exist discharge between the two, thereby causes the damage of starter.

The utility model content

For solving the problem that starter often burns out in the prior art; The utility model provides a kind of oil immersed type star-delta starter; This starter cooperates starting motor through moving contact and the fixed contact that is arranged in the machine oil, can not produce electric arc and simple in structure, is applicable to large-scale mining machinery.

The utility model is that the technical scheme that addresses the above problem employing is: a kind of oil immersed type star-delta starter; Comprise the terminal block that is provided with six binding posts, six binding posts on terminal block number consecutively from left to right are a, b, c, d, e, f, wherein; Binding post a, c, e are connected with the binding post of three phase mains with motor three phase winding tops respectively; Binding post b, d, f are connected with the terminal binding post of motor three phase windings, also are provided with fuel tank, and the bottom is provided with insulating oil in the fuel tank; The top of fuel tank is provided with the manual axle that right-hand member stretches out fuel tank; Manually evenly be provided with three moving contacts on the axle, manually the both sides of axle are respectively equipped with carriage A and carriage B, are equipped with on carriage A and the carriage B and the corresponding fixed contact of moving contact; Through the mutual short circuit of shorting stub, described fixed contact and moving contact all are immersed in the insulating oil in the fuel tank between the fixed contact on the carriage A; The corresponding connection of moving contact on the binding post a on the said terminal block, c, e and the corresponding connection of fixed contact on the carriage B, the binding post b on the terminal block, d, f and manual axle.

In the utility model, the insulating oil in the fuel tank mainly is to play the effect of eliminating the electric arc that produces between contact, and is therefore unqualified to its kind; Go out on the part outside the fuel tank to be provided with drawing handle in manual shaft extension; Fuel tank is provided with three position indicator near a side of drawing handle, the initial position (being designated as original position) of the corresponding respectively manually axle of three position indicator, the moving contact manual position (being designated as start bit) of axle, a moving contact position (be designated as move) of manual when fixed contact on the carriage B contact when fixed contact on the carriage A contact; Also be provided with stop button, stop button control is the axle correcting action manually, and motor quits work.

If three binding posts at motor three phase winding tops are numbered (1,2,3); Three terminal binding posts of motor three phase windings are numbered (6,4,5): promote drawing handle to start bit; Drawing handle drives manually, and axle moves; Moving contact on the manual axle contacts with the fixed contact on the carriage A; At this moment: the binding post a on the terminal block, c, e are connected with fixed contact on the carriage B with the binding post (1,2,3) at three phase mains, motor three phase winding tops respectively, and binding post b, d, f are connected with moving contact on the manual axle with the terminal binding post (6,4,5) of motor three phase windings respectively, and the moving contact on manual contacts with the fixed contact on the carriage A; Mutual short circuit between the fixed contact, motor adopts the star starting;

Treated fast drawing handle to be pulled to the operation position after the several seconds; At this moment; Moving contact on the manual axle contacts with the fixed contact on the carriage B; At this moment: the binding post a on the terminal block, c, e are connected with fixed contact on the carriage B with the binding post (1,2,3) at three phase mains, motor three phase winding tops respectively, and binding post b, d, f are connected with moving contact on the manual axle with the terminal binding post (6,4,5) of motor three phase windings respectively, and the moving contact on manual contacts with the fixed contact on the carriage B; Delta circuit is communicated with, and motor is in normal operating conditions.

In the utility model, also be provided with self-locking anti-lock device and three groups of overtemperature relays, the self-locking anti-lock device can be avoided misoperation; That the described electrical equipment of adopting has is overheated, overvoltage, overload protective function, and the protection motor was not burnt out when motor was unusual.

In the utility model, can change moving contact and fixed contact, when the motor power (output) that is started is bigger, can strengthen moving contact and fixed contact, can make extremely a plurality of series of hundreds of kilowatts of 30kw according to power of electric motor; Because the winding of motor is charged, therefore when shutting down or change moving contact and fixed contact, need powered-down.

Beneficial effect: the utility model has been realized the star triangle starting of motor through the connected mode of moving contact, fixed contact, motor and three phase mains; Substituted the line bag of prior art; Need coiling line bag again after having avoided the line bag to burn out, delay work and mistake, simultaneously; Moving contact and fixed contact are arranged in the insulating oil, cause security incident thereby prevented to produce electric arc between the two.The utility model is simple in structure, with low cost, is applicable to the motor starting of various big machineries.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the circuit connecting line figure of the utility model;

Reference numeral: 1, fuel tank, 2, carriage A, 3, manual axle, 4, drawing handle; 5, carriage B, 6, terminal block, 7, binding post, 8, fixed contact; 9, moving contact, 10, shorting stub, 11, the terminal binding post of motor three phase windings; 12, the binding post at motor three phase winding tops, 13, three phase mains, 14, the pasta line.

Embodiment

As shown in the figure, a kind of oil immersed type star-delta starter comprises the terminal block 6 that is provided with six binding posts 7; Six binding posts 7 on the terminal block 6 number consecutively from left to right are a, b, c, d, e, f, and wherein, binding post a, c, e are connected with the binding post 12 of three phase mains 13 with motor three phase winding tops respectively; Binding post b, d, f are connected with the terminal binding post 11 of motor three phase windings; Also be provided with fuel tank 1, the bottom is provided with insulating oil in the fuel tank 1, and the top of fuel tank 1 is provided with the manual axle 3 that right-hand member stretches out fuel tank 1; The termination that manual axle 3 stretches out fuel tank 1 has drawing handle 4; Manually evenly be provided with three moving contacts 9 on the axle 3, manually the both sides of axle 3 are respectively equipped with carriage A2 and carriage B5, are equipped with on carriage A2 and the carriage B5 and moving contact 9 corresponding fixed contacts 8; Through shorting stub 10 mutual short circuits, described fixed contact 8 all is immersed in the insulating oil in the fuel tank 1 with moving contact 9 between the fixed contact on the carriage A2; Moving contact 9 corresponding connections on the binding post a on the said terminal block 6, c, e and the corresponding connection of fixed contact on the carriage B5, the binding post b on the terminal block 6, d, f and manual axle 3.

Three position indicator are set, the initial position (being designated as original position) of the corresponding respectively manually axle 3 of three position indicator, the moving contact 9 manual position (being designated as start bit) of axle 3, moving contact 9 position (be designated as move) of manual 3 when fixed contact 8 on the carriage B5 contact when fixed contact 8 on the carriage A2 contact on fuel tank 1 outer wall or drawing handle 4.

Promote drawing handle 4 to start bit; Drawing handle 4 drives manually, and axle 3 moves; Moving contact 9 on the manual axle 3 contacts with the fixed contact 8 on the carriage A2; At this moment: the binding post a on the terminal block 6, c, e are connected with fixed contact 8 on the carriage B5 with binding post (1,2,3) 12 at three phase mains 13, motor three phase winding tops respectively, and binding post b, d, f are connected with moving contact 9 on the manual axle 3 with the terminal binding post (6,4,5) 11 of motor three phase windings respectively, and the moving contact 9 on manual 3 contacts with the fixed contact 8 on the carriage A2; Mutual short circuit between the fixed contact 8, motor adopts the star starting;

Treated fast drawing handle 4 to be pulled to motor triangle operation position after the several seconds; At this moment; Moving contact 9 on the manual axle 3 contacts with the fixed contact 8 on the carriage B5; At this moment: the binding post a on the terminal block 6, c, e are connected with fixed contact 8 on the carriage B5 with binding post (1,2,3) 12 at three phase mains 13, motor three phase winding tops respectively, and binding post b, d, f are connected with moving contact 9 on the manual axle 3 with the terminal binding post (6,4,5) 11 of motor three phase windings respectively, and the moving contact 9 on manual 3 contacts with the fixed contact 8 on the carriage B5; Delta circuit is communicated with, and motor is in normal operating conditions.

Claims

1. oil immersed type star-delta starter; Comprise the terminal block (6) that is provided with six binding posts (7); Six binding posts (7) on the terminal block (6) number consecutively from left to right are a, b, c, d, e, f; Wherein, binding post a, c, e are connected with the binding post (12) at three phase mains (13) and motor three phase winding tops respectively, and binding post b, d, f are connected with the terminal binding post (11) of motor three phase windings; It is characterized in that: also be provided with fuel tank (1); The interior bottom of fuel tank (1) is provided with insulating oil, and the top of fuel tank (1) is provided with the manual axle (3) that right-hand member stretches out fuel tank (1), manually evenly is provided with three moving contacts (9) on the axle (3); Manually the both sides of axle (3) are respectively equipped with carriage A (2) and carriage B (5); Be equipped with on carriage A (2) and the carriage B (5) and the corresponding fixed contact of moving contact (9) (8), through the mutual short circuit of shorting stub (10), described fixed contact (8) and moving contact (9) all are immersed in the insulating oil in the fuel tank (1) between the fixed contact on the carriage A (2); The corresponding connection of moving contact (9) in the corresponding connection of fixed contact on binding post a on the said terminal block (6), c, e and the carriage B (5), the binding post b on the terminal block (6), d, f and manual axle (3).

2. a kind of oil immersed type star-delta starter according to claim 1 is characterized in that: the end that described manual axle (3) stretches out fuel tank (1) is provided with drawing handle (4).

3. a kind of oil immersed type star-delta starter according to claim 1; It is characterized in that: also be provided with three position indicator, the manual position of manual spool (3) when contacting of the fixed contact (8) on the position of axle (3) and moving contact (9) and the carriage B (5) when contact of the fixed contact (8) on the initial position of the corresponding respectively manually axle (3) of three position indicator, moving contact (9) and the carriage A (2).

4. a kind of oil immersed type star-delta starter according to claim 1 is characterized in that: also be provided with the manually stop button of axle (3) correcting action of control.