CN110164731B

CN110164731B - Air balance relay

Info

Publication number: CN110164731B
Application number: CN201910503944.3A
Authority: CN
Inventors: 罗阳; 杨菲; 梁爱民
Original assignee: GUIZHOU TIANYI ELECTRICAL CO Ltd
Current assignee: GUIZHOU TIANYI ELECTRICAL CO Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-11-17
Anticipated expiration: 2039-06-12
Also published as: CN110164731A

Abstract

An air balance relay is composed of a motion assembly, an air balance electromagnetic assembly and a seat plate cover fixing assembly; the gas balance electromagnetic assembly consists of a connecting plate, a coil rack, a coil and a mandrel; a cylinder is formed between a gap at E, F positions at two ends of the mandrel and the inner wall of the coil rack and the connecting plate; the coil is connected with the M end and the N end of the control power supply through leads. The mandrel has a large moving stroke, and the moving distance of the movable reed and the movable contact can ensure that the movable contact and the static contact are reliably contacted, so that the requirement on the gap of the contact is reduced, and the requirement on the processing precision of a relay component is reduced; the current is controlled to be instantly switched on or off, so that energy is saved and the relay is prevented from heating; low cost, easy processing and high reliability.

Description

Air balance relay

Technical Field

The invention relates to a gas balance relay, which is a group change-over switch with high power, high reliability and long service life and is used for special industries with high requirements on various comprehensive properties of products such as high temperature, high pressure, high altitude, corrosion resistance, high impact and the like.

Background

Some industries have extremely high requirements on the comprehensive performance of relay products, but have little yield requirements, and with the technical development of the industries, the technical types of relays have been developed to bottleneck times from electromagnetic type, self-holding, magnetic latching, solid state relays and the like.

Disclosure of Invention

In order to exert the maximum magnetic efficiency of the electromagnetic coil, the invention utilizes the air charging of the relay and the cylinder formed by the cylindrical structure at the center of the coil and the mandrel to form a balance mechanism, thereby achieving the purpose of maintaining the air balance of the relay.

An air balance relay is composed of a motion assembly, an air balance electromagnetic assembly and a seat plate cover fixing assembly;

the motion assembly consists of a movable contact 5, a support plate 6, a movable sliding plate 7, a core shaft 14 and a movable contact piece 19;

the gas balance electromagnetic assembly consists of a connecting plate 7, a coil rack 13, a coil 15 and a mandrel 14;

the seat plate cover fixing assembly consists of a seat plate 1, a glass blank 2, a static contact piece 3, a static contact 4, a power supply wiring terminal 9, a load wiring terminal A10, a load wiring terminal B11, a load wiring terminal C12, a control power supply M end 16, a control power supply N end 17, a cover 18 and a sliding groove support plate 20;

the seat plate 1 is fixedly connected with a power supply wiring terminal 9, a load wiring terminal A10, a load wiring terminal B11, a load wiring terminal C12, a control power supply M end 16 and a control power supply N end 17 through a sintered glass blank 2; the connecting chute plate 20 is fastened by spot welding; securing the attachment cap 18 by laser welding;

the power supply wiring terminal 9, the load wiring terminal A10, the load wiring terminal B11 and the load wiring terminal C12 are respectively welded with a static contact piece 3, and each static contact piece 3 is welded with a static contact 4;

the chute support plate 20 is provided with a connecting plate 8 which is connected with the coil rack 13;

the coil 15 is wound on the coil frame 13, and the center of the coil frame 13 is provided with a mandrel 14;

an air cylinder is formed between a gap E, F at the two ends of the mandrel 14, the inner wall of the coil rack 13 and the connecting plate 8; the movable sliding plate 7 is connected with the mandrel 14, the supporting plate 6 is connected with the movable sliding plate 7, the movable contact piece 19 is connected with the supporting plate 6, and the movable contact 5 is connected with the movable contact piece 19;

the coil 15 is connected with a control power supply M terminal 16 and a control power supply N terminal 17 through leads.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

in the figure: 1-seat plate, 2-glass blank, 3-static contact piece, 4-static contact point, 5-movable contact point, 6-support plate, 7-movable sliding plate, 8-connecting plate, 9-power supply terminal, 10-load terminal A, 11-load terminal B, 12-load terminal C, 13-coil rack, 14-mandrel 15-coil, 16-control power supply M end, 17-control power supply N end, 18-cover, 19-movable contact piece and 20-chute support plate;

FIG. 4 is a schematic view of the kinematic assembly of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a schematic diagram of the structure of the air-balanced electromagnetic assembly of the present invention;

FIG. 7 is a schematic view of the structure of the seat plate cover fixing assembly of the present invention;

fig. 8 is a left side view of fig. 7.

The beneficial effect of adopting above-mentioned technical scheme is:

1. the mandrel has a large moving stroke, and the moving distance of the movable reed and the movable contact can ensure that the movable contact and the static contact are reliably contacted, so that the requirement on the gap of the contact is reduced, and the requirement on the processing precision of a relay component is reduced;

2. the invention controls the current to be instantly switched on or off, saves energy and avoids the heating of the relay;

3. the invention has low cost, easy processing and high reliability.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

the seat plate cover fixing assembly comprises a seat plate 1, a glass blank 2, a static contact piece 3, a static contact 4, a power supply wiring terminal 9, a load wiring terminal A10, a load wiring terminal B11, a load wiring terminal C12, a control power supply M end 16, a control power supply N end 17, a cover 18 and a sliding groove support plate 20.

All parts are assembled to form the air balance relay shown in the figure 1, and the purpose that one group of control power supply controls a plurality of groups of loads is achieved.

As shown in fig. 1, 2 and 3, a power supply terminal 9, a load terminal a10, a load terminal B11, a load terminal C12, a control power supply M end 16 and a control power supply N end 17 are fastened on a glass blank 2 on a seat plate 1 in a glass sintering mode, a chute plate 20 is fastened in a spot welding mode, and a cover 18 is fastened in a laser welding mode; static contact pieces 3 are respectively welded on the power supply wiring terminal 9, the load wiring terminal A10, the load wiring terminal B11 and the load wiring terminal C12, and a static contact 4 is welded on each static contact piece 3; a connecting plate 8 is arranged on a chute support plate 20 which is spot-welded with the seat plate 1, a coil frame 13 is connected with the connecting plate 8, a coil 15 is wound on the coil frame 13, a core shaft 14 is arranged at the center of the coil frame 13, and a cylinder is formed between E, F gaps at two ends of the core shaft 14 and the inner wall of the coil frame 13 and the connecting plate 8; the movable sliding plate 7 is connected with the mandrel 14, the supporting plate 6 is connected with the movable sliding plate 7, the movable contact piece 19 is connected with the supporting plate 6, and the movable contact 5 is connected with the movable contact piece 19; the coil 15 is connected with the control power supply M end 16 and the control power supply N end 17 through a lead, and under the condition that the control power supply M end 16 and the control power supply N end 17 are switched on and off, the movable contact 5 and the static contact 4 are switched on and off, so that the purpose of controlling the power supply to control the load to be switched on or switched off is achieved.

The design principle of the invention is as follows:

the invention discloses a gas balance relay, which requires that inert gas with certain pressure is filled in the relay according to the use function requirement of the relay, and aims to increase the anti-interference capability (contact spark interference, contact electromagnetic interference, internal and external pressure balance, corrosion resistance, radiation protection and the like) of the relay.

The specific working process of the invention is as follows:

the control power supply M end 16 and the control power supply N end 17 of the invention input opening instant control current, the electromagnetic coil 15 generates electromagnetic field, the mandrel 14 moves from Y end to X end in figure 3 under the action of the electromagnetic, the mandrel 14 drives the motion assembly to move from Y end to X end together, so that the movable contact 5 contacts with the static contact 4, so that the power supply and the load are connected, in the process of moving the mandrel 14, the gap F in figure 1 forms a closed space because the gap on the mandrel 14 is blocked, because the inert gas pressure is the same as that in the relay before the closed space is not formed, after the closed space is formed, because the contact pressure between the movable contact piece 19 and the static contact piece 3 is transmitted to the mandrel 14 along with the motion assembly, the closed space F is compressed to form counter force, the counter force is not enough to cause the movement of the mandrel 14 to the gap F not to be closed, so that the contact pressure between the movable contact piece 19 and the static contact piece 3 forms cylinder pressure balance with the gap F, the relay still keeps the working state after the instantaneous control current is cut off; when the control power supply M end 16 and the control power supply N end 17 input closing instant control current, the electromagnetic coil 13 generates a closing magnetic field, so that the mandrel 14 moves towards the Y direction from the X direction in fig. 3, the movable contact 5 and the static contact 4 are driven to be separated, the relay enters a non-working state, the gap E, F in fig. 1 is not closed, the two ends of the cylinder are under the same inert gas pressure, and the electric appliance keeps a non-working state after the instant control current is cut off.

The invention is only illustrated in the structural design of the normally open state of the air balance relay, and the principle can be designed into the structural form of the normally closed state, multiple groups of normally open states, multiple groups of normally closed states or the coexistence of the normally open states and the normally closed states.

Claims

1. An air balance relay is characterized by comprising a motion assembly, an air balance electromagnetic assembly and a seat plate cover fixing assembly; the motion assembly consists of a movable contact (5), a support plate (6), a movable sliding plate (7), a core shaft (14) and a movable contact piece (19); the gas balance electromagnetic assembly consists of a connecting plate (7), a coil rack (13), a coil (15) and a mandrel (14);

the seat plate cover fixing assembly consists of a seat plate (1), a glass blank (2), a static contact piece (3), a static contact (4), a power supply wiring terminal (9), a load wiring terminal A (10), a load wiring terminal B (11), a load wiring terminal C (12), a control power supply M end (16), a control power supply N end (17), a cover (18) and a sliding groove support plate (20);

the seat plate (1) is fixedly connected with a power supply wiring terminal (9), a load wiring terminal A (10), a load wiring terminal B (11), a load wiring terminal C (12), a control power supply M end (16) and a control power supply N end (17) through a sintered glass blank (2); the connecting chute support plate (20) is fastened by spot welding; fastening the connecting cover (18) by laser welding;

static contact pieces (3) are respectively welded on the power supply wiring terminal (9), the load wiring terminal A (10), the load wiring terminal B (11) and the load wiring terminal C (12), and static contacts (4) are welded on the static contact pieces (3);

the chute support plate (20) is provided with a connecting plate (8) which is connected with the coil rack (13);

the coil (15) is wound on the coil frame (13), and a core shaft (14) is arranged in the center of the coil frame (13);

e, F gaps at two ends of the mandrel (14) form cylinders, and the elastic pressure of the static contact piece and the movable contact piece and the pressure of the cylinders form balance when the relay works by utilizing the added gas, so that the relay keeps a working state and a non-working state; the movable sliding plate (7) is connected with the core shaft (14), the support plate (6) is connected with the movable sliding plate (7), the movable contact piece (19) is connected with the support plate (6), and the movable contact point (5) is connected with the movable contact piece (19);

and the coil (15) is connected with a control power supply M end (16) and a control power supply N end (17) through a lead.