CN111613979A

CN111613979A - Alternating current distribution arc protection device capable of avoiding misoperation

Info

Publication number: CN111613979A
Application number: CN202010512408.2A
Authority: CN
Inventors: 穆之栋
Original assignee: Hangzhou Qianyun Trade Co ltd
Current assignee: Hangzhou Qianyun Trade Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-09-01

Abstract

The invention provides an alternating current distribution arc protection device capable of avoiding misoperation, which comprises a shell, wherein a backing plate is fixedly connected inside a support and positioned on the right side of a resistor disc, a bimetallic strip is fixedly connected on the right side of the backing plate, a rotating plate is movably sleeved on the outer side of a fixed shaft and positioned on the front side of a main seat, a clamping plate is movably hinged to the bottom of the rotating plate, a cylinder corresponding to the rotating plate is fixedly connected on the front side of a shifting plate, and a collision plate corresponding to a switch piece is movably inserted on the right side of the baffle. When the electric arc trouble appears in the distribution lines, the resistance card generates heat, bimetallic strip thermal deformation, it moves to the right to dial the board through the connecting rod drive, it is rotatory to dial the board and stir the commentaries on classics board through the cylinder, the commentaries on classics board drives the cardboard and deflects to the right side, the cardboard striking hits the board, hits the board and moves and disconnect switch spare to make the distribution lines disconnection, avoided not breaking because of the circuit, the electric arc trouble problem lasts the expansion, lead to the phenomenon of circuit short circuit or burnout, moreover, the steam generator is simple in structure, and is convenient to use.

Description

Alternating current distribution arc protection device capable of avoiding misoperation

Technical Field

The invention belongs to the technical field of alternating current power distribution, and particularly relates to an alternating current power distribution arc protection device for avoiding misoperation.

Background

Arc prevention and control of distribution lines, arc faults of low-voltage distribution lines (including power sockets and equipment leads) are the most main causes of electrical fire of buildings, and a protection device combining "arc detection" and "power-off protection" is an Arc Fault Circuit Interrupter (AFCI), and the fire prevention and control effect of the AFCI on the distribution lines is indisputable.

The AFCI has the same problems of faults and failures as a conventional protective electrical appliance, is easily influenced by the interference of the electrical circuit and the environment, has 'refusal action' and 'misoperation', can maintain or replace the fault circuit only by accurately knowing the fault position, and has not particularly ideal protection effect on the arc faults.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and an ac distribution arc protection device for avoiding malfunction is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an ac distribution arc protection device for avoiding malfunction, which is achieved by the following specific technical means:

an alternating current distribution arc protection device for avoiding misoperation comprises a shell, wherein a support is fixedly connected inside the shell, a resistance card is fixedly connected inside the support, a backing plate is fixedly connected inside the support and positioned on the right side of the resistance card, a bimetallic strip is fixedly connected on the right side of the backing plate, a main seat is fixedly connected inside the shell and positioned on the right side of the support, a fixed shaft is fixedly connected inside the main seat, a rotating plate is movably sleeved outside the fixed shaft and positioned on the front side of the main seat, a clamping plate is movably hinged at the bottom of the rotating plate, a spring is installed on the clamping plate, a baffle plate corresponding to the clamping plate is fixedly connected on the front side of the main seat, a shifting plate is movably sleeved outside the fixed shaft and positioned on the back side of the main seat, a cylinder corresponding to the rotating plate is fixedly connected on the front side of the shifting plate, a limiting column corresponding to the rotating plate is fixedly connected on the top of, the inside of casing and the right side fixed mounting who is located the baffle have a switch spare, and the right side activity of baffle is pegged graft and is had the board that hits that corresponds with the switch spare.

Further, resistance card and switch spare all are connected with the distribution lines, and when the electric arc trouble appeared in the distribution lines, the resistance card can generate heat, and the disconnection and the intercommunication of switch spare control distribution lines.

Furthermore, the base plate is provided with air holes so that heat generated by the resistance sheet can be conveniently transferred to the bimetallic strip.

Further, dial the board and be the V font, the cylinder includes two, is located respectively and dials two tip of board, when dialling the board rotation, can drive through the cylinder and change the board rotation.

Furthermore, the limiting columns comprise two limiting columns which are symmetrically distributed around the fixed shaft.

Furthermore, the connecting relationship between the connecting rod and the bimetallic strip as well as the connection relationship between the connecting rod and the shifting plate are both movably hinged.

Further, hit and install reset spring on the board, hit the left side of board and extend to the left side of baffle right wall, when the cardboard removed to the right side, can drive and hit the board and move to the right for the circuit disconnection of switch spare.

Advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. when the electric arc trouble appears in the distribution lines, the resistance card is too big to generate heat because of short-circuit current, bimetallic strip is heated and is out of shape, it moves to dial the board right side to drive through the connecting rod, it is rotatory to dial the board and stir the commentaries on classics board through the cylinder, the commentaries on classics board is rotatory the back, the effort that breaks through the spring drives the cardboard and deflects the right side, when the cardboard rotates the interior right wall department to the baffle, can strike and hit the board, make and hit the board and move and disconnect switch spare right side, thereby make the distribution lines disconnection, avoided not disconnected because of the circuit, the electric arc trouble problem lasts the expansion, the phenomenon that leads to the short circuit of.

2. Through setting up the bimetallic strip, the temperature variation when utilizing the arc fault comes inspection and protection, need not to know exact position, just can realize the effect of auto-power-off protection, convenient to use.

3. When the arc fault is relieved, the temperature is reduced, the bimetallic strip resets, the whole device also automatically resets, and the use is convenient.

4. Through setting up commentaries on classics board, cardboard and spring, the cardboard can remain stability, can not lightly rotate, has guaranteed the reliability of whole device work.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a front sectional view of the bimetallic strip and pulling plate connecting structure of the present invention;

FIG. 3 is a front sectional view of the main seat attachment structure of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

In the figure: 1. a housing; 2. a support; 3. resistance cards; 4. a base plate; 5. a bimetal; 6. a main base; 7. a fixed shaft; 8. rotating the plate; 9. clamping a plate; 10. a spring; 11. a baffle plate; 12. dialing a plate; 13. a cylinder; 14. a limiting column; 15. a connecting rod; 16. sealing a gasket; 17. a switch member; 18. and (6) striking a plate.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 4:

the invention provides an alternating current distribution arc protection device for avoiding misoperation, which comprises a shell 1, wherein a support 2 is fixedly connected inside the shell 1, a resistor disc 3 is fixedly connected inside the support 2, a backing plate 4 is fixedly connected inside the support 2 and positioned on the right side of the resistor disc 3, a bimetallic strip 5 is fixedly connected on the right side of the backing plate 4, a main seat 6 is fixedly connected inside the shell 1 and positioned on the right side of the support 2, a fixed shaft 7 is fixedly connected inside the main seat 6, a rotating plate 8 is movably sleeved outside the fixed shaft 7 and positioned on the front side of the main seat 6, a clamping plate 9 is movably hinged at the bottom of the rotating plate 8, a spring 10 is installed on the clamping plate 9, a baffle 11 corresponding to the clamping plate 9 is fixedly connected on the front side of the main seat 6, a shifting plate 12 is movably sleeved outside the fixed shaft 7 and positioned on the back side of the main seat 6, a cylinder 13 corresponding to the rotating plate 8 is, the top of the main seat 6 is fixedly connected with a limiting column 14 corresponding to the rotating plate 8, the right end of the bimetallic strip 5 is movably connected with the shifting plate 12 through a connecting rod 16, a switch part 17 is fixedly installed inside the shell 1 and on the right side of the baffle plate 11, and a collision plate 18 corresponding to the switch part 17 is movably inserted on the right side of the baffle plate 11.

Wherein, resistance card 3 and switch 17 all are connected with the distribution lines, and when the electric arc trouble appeared in the distribution lines, resistance card 3 can generate heat, and switch 17 controls the disconnection and the intercommunication of distribution lines.

Wherein, the backing plate 4 is provided with air holes so as to facilitate the heat generated by the resistance sheet 3 to be transferred to the bimetallic strip 5.

Wherein, dial board 12 and be the V font, cylinder 13 includes two, is located two tip of dialling board 12 respectively, when dialling board 12 rotatory, can rotate board 8 through the cylinder drive.

The number of the limiting columns 14 is two, and the two limiting columns 14 are symmetrically distributed around the fixing shaft 7.

Wherein, the connecting rod 16 is movably hinged with the bimetallic strip 5 and the shifting plate 12.

Wherein, hit and install reset spring on the board 18, hit the left side of board 18 and extend to the left side of baffle 11 right wall, when cardboard 9 moved to the right side, can drive and hit board 18 and move to the right side for the circuit disconnection of switch 17.

The specific use mode and function of the embodiment are as follows:

in the invention, as shown in fig. 1 in an initial state, the clamping plate 9 is clamped on the inner left wall of the baffle 11, and the clamping plate 9 is fixed under the action of the spring 10 and cannot easily deflect; when an arc fault occurs in a distribution line, the resistance sheet 3 generates heat due to overlarge short-circuit current, the bimetallic strip 5 is deformed by heating, the shifting plate 12 is driven by the connecting rod 16 to move rightwards, the shifting plate 12 shifts the rotating plate 8 to rotate through the cylinder 13, after the rotating plate 8 rotates, the acting force of the breaking spring 10 drives the clamping plate 9 to deflect to the right side, and when the clamping plate 9 rotates to the inner right wall of the baffle 11, the clamping plate 18 is impacted, so that the striking plate 18 moves rightwards and breaks the switch part 17, the distribution line is broken, the phenomenon that the arc fault problem is continuously enlarged due to the fact that the circuit is not broken is avoided, and the phenomenon that the circuit is short-circuited or burnt out is caused; when the arc fault is relieved, the temperature is reduced, the bimetallic strip 5 is reset, and the whole device is automatically reset along with the reduction of the temperature, so that the use is convenient; through setting up commentaries on classics board 8, cardboard 9 and spring 10, cardboard 9 can remain stability, can not light rotate, has guaranteed the reliability of whole device work.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims

1. An ac distribution arc protection device to avoid false actions, comprising a casing (1), characterized in that: the inner part of the shell (1) is fixedly connected with a support (2), the inner part of the support (2) is fixedly connected with a resistance card (3), the inner part of the support (2) is fixedly connected with a backing plate (4) positioned on the right side of the resistance card (3), the right side of the backing plate (4) is fixedly connected with a bimetallic strip (5), the inner part of the shell (1) is fixedly connected with a main seat (6) positioned on the right side of the support (2), the inner part of the main seat (6) is fixedly connected with a fixed shaft (7), the outer side of the fixed shaft (7) is movably sleeved with a rotating plate (8) positioned on the front side of the main seat (6), the bottom of the rotating plate (8) is movably hinged with a clamping plate (9), a spring (10) is installed on the clamping plate (9), the front side of the main seat (6) is fixedly connected with a baffle plate (11) corresponding to the clamping plate (9), the outer side, the front face of the shifting plate (12) is fixedly connected with a cylinder (13) corresponding to the rotating plate (8), the top of the main seat (6) is fixedly connected with a limiting column (14) corresponding to the rotating plate (8), the right end of the bimetallic strip (5) is movably connected with the shifting plate (12) through a connecting rod (16), a switch piece (17) is fixedly arranged in the casing (1) and on the right side of the baffle plate (11), and a collision plate (18) corresponding to the switch piece (17) is movably inserted on the right side of the baffle plate (11).

2. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the resistance card (3) and the switch element (17) are connected with a distribution line.

3. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the base plate (4) is provided with air holes.

4. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the shifting plate (12) is V-shaped, and the two cylinders (13) are respectively positioned on the two end parts of the shifting plate (12).

5. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the two limiting columns (14) are symmetrically distributed around the fixed shaft (7).

6. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the connecting rod (16) is movably hinged with the bimetallic strip (5) and the shifting plate (12).

7. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: a return spring is mounted on the striking plate (18), and the left side of the striking plate (18) extends to the left side of the right wall of the baffle plate (11).