CN212209343U

CN212209343U - Automatic relay protection device for electric appliance

Info

Publication number: CN212209343U
Application number: CN202020664565.0U
Authority: CN
Inventors: 周旭皎
Original assignee: Shenyang Tianying Industrial Control Technology Co ltd
Current assignee: Shenyang Tianying Industrial Control Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-22
Anticipated expiration: 2030-04-27

Abstract

The utility model provides an automatic relay protection device of electrical apparatus belongs to relay technical field, including sealed shell, heat preservation, long wiring end, packing ring, piston plate, short wiring end, nut, gasket, spring, metal pole, insulating cylinder, insulating washer, insulating backing plate, telescopic link, conductive spring, conducting rod, conducting cylinder and current conducting plate, the inner wall of sealed shell bonds through the structure glue has the heat preservation, and the left side embedding of sealed shell is provided with long wiring end, the inner wall fixedly connected with packing ring of sealed shell. The utility model provides a can generate heat after the conducting rod circular telegram, when the electric current was too big, the temperature of conducting rod sharply risees, and the heat of conducting rod can be absorbed by mercury, mercury expend with heat and contract with cold volume grow, and mercury can promote the piston board and remove left, makes the current conducting plate stagger with the conducting tube, and then makes the unable shape current loop of long wiring end and short-circuit terminal, and the break-off current plays the purpose of protective relay, has the reaction sensitivity, can advantages such as used repeatedly.

Description

Automatic relay protection device for electric appliance

Technical Field

The utility model relates to a relay technical field, it is specific, relate to an electrical apparatus automation relay protection device.

Background

The relay is an electric control device, when the change of input quantity is up to the defined requirement, it makes the controlled quantity produce predefined step change in the electric output circuit, it has the interactive relation between control system and controlled system, usually applied in automatic control circuit, it is an "automatic switch" which uses small current to control large current operation, so that it can play the functions of automatic regulation, safety protection and switching circuit, when the input quantity, such as voltage, current and temperature, etc. is up to the defined value, the electric appliance which makes the controlled output circuit be switched on or off can be divided into two categories of electric quantity relay, such as current, voltage, frequency and power, and non-electric quantity relay, such as temperature, pressure and speed, etc. it has the advantages of quick action, stable operation, long service life and small volume, and the relay interior has protection device, the protection device is used for protecting the relay from being burnt out, and the protection device in the prior art has the problems of incapability of being reused, low sensitivity in reaction, load caused by overlarge resistance and the like. Therefore, further research needs to be carried out on the basis of the protection device, and an electric appliance automation relay protection device is provided.

SUMMERY OF THE UTILITY MODEL

The automatic relay protection device for the electric appliance solves the problems of incapability of being reused, insensitive response and load caused by overlarge resistance, provides an automatic relay protection device for the electric appliance, the conducting rod in the protection device can generate heat after being electrified, when the current is overlarge, the temperature of the conducting rod is rapidly increased, the heat of the conducting rod can be absorbed by mercury, the mercury expands with heat and contracts with cold, the volume is enlarged, the mercury can push the piston plate to move leftwards, so that the conducting plate and the conducting cylinder are staggered, so that the long wiring terminal and the short wiring terminal can not form a current loop, and the current is cut off to protect the relay, the resistance of the mercury and the conducting rod is very small, and large load can not be generated, the influence to the electric current is little, and the little heat conduction in gap between conducting rod and the heat preservation is fast, and the heat loss can be placed to the heat preservation, has the reaction sensitivity, can reuse advantage such as.

The utility model provides a following technical scheme: an automatic relay protection device for an electric appliance comprises a sealing shell, a heat preservation layer, a long wiring end, a gasket, a piston plate, a short wiring end, nuts, gaskets, springs, metal rods, an insulating cylinder, an insulating gasket, an insulating base plate, a telescopic rod, a conductive spring, a conductive rod, a conductive cylinder and a conductive plate, wherein the heat preservation layer is bonded on the inner wall of the sealing shell through structural adhesive, the long wiring end is embedded in the left side of the sealing shell, the gasket is fixedly connected with the inner wall of the sealing shell, the piston plate slides in a seamless mode on the inner wall of the sealing shell, the short wiring end is embedded in the bottom of the sealing shell, the long wiring end and the short wiring end penetrate through the middles of the two nuts in a threaded mode, the long wiring end and the short wiring end penetrate through the middles of the two gaskets in a movable mode, the spring is fixedly connected, the utility model discloses a short wiring end, including a metal pole, insulating washer and a conductive cylinder, the metal pole is seamless to run through in the centre of insulating cylinder, insulating washer and conductive cylinder, the insulating backing plate of left side fixedly connected with of metal pole, the seamless embedding in top of short wiring end has the telescopic link, the top fixedly connected with conductive spring of short wiring end, the top fixedly connected with conducting rod of long wiring end, the top fixedly connected with current conducting plate of telescopic link.

Further preferred embodiments: the inside of the sealed shell is filled with mercury with an indefinite shape, the sealed shell is U-shaped, and the conducting rod is J-shaped.

Further preferred embodiments: the conducting plate is tightly attached to the bottom of the conducting cylinder, the conducting plate is tightly attached to the bottom of the insulating cylinder, and the conducting plate is located right above the conducting spring.

Further preferred embodiments: the right side of spring is supported in the left side of insulating backing plate, and the diameter of insulating backing plate is greater than the diameter of electrically conductive section of thick bamboo to the length of insulating section of thick bamboo is one fourth of electrically conductive section of thick bamboo.

Further preferred embodiments: the diameters of the insulating cylinder, the insulating washer and the conductive cylinder are kept consistent, and the insulating washer is positioned between the insulating cylinder and the conductive cylinder.

Further preferred embodiments: the length of insulating cylinder is greater than the length of conducting plate, and the conducting plate is the curved surface form to the conducting plate supports in the left side of piston plate.

Further preferred embodiments: the bottom of long wiring end and short wiring end is all opened and is provided with the wiring hole, and the wiring hole is for being located between two gaskets.

Has the advantages that: the utility model provides a can generate heat after the conducting rod circular telegram, when the electric current is too big, the temperature of conducting rod sharply risees, the heat of conducting rod can be absorbed by mercury, mercury expend with heat and contract with cold volume grow, mercury can promote the piston plate and remove left, make the current conducting plate stagger with the conducting cylinder, and then make the unable shape current loop of long wiring end and short circuit terminal, the break-off current plays the purpose of protective relay, the resistance of mercury and conducting rod is very little, can not be to producing big load, little influence to the electric current, the little heat conduction in gap between conducting rod and the heat preservation is fast, the heat loss can be placed, it is sensitive to have the reaction, can reuse advantage such as.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall use of the present invention.

Fig. 3 is a left side view of the long terminal of the present invention.

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

In FIGS. 1-4: the insulating device comprises a sealing shell 1, an insulating layer 2, a long terminal 3, a gasket 4, a piston plate 5, a short terminal 6, a nut 7, a gasket 8, a spring 9, a metal rod 10, an insulating cylinder 11, an insulating gasket 12, an insulating base plate 13, a telescopic rod 14, a conductive spring 15, a conductive rod 16, a conductive cylinder 17 and a conductive plate 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, in the embodiment of the present invention, an automatic relay protection device for an electrical appliance includes a sealing case 1, a heat insulating layer 2, a long terminal 3, a gasket 4, a piston plate 5, a short terminal 6, a nut 7, a gasket 8, a spring 9, a metal rod 10, an insulating cylinder 11, an insulating gasket 12, an insulating pad 13, a telescopic rod 14, a conductive spring 15, a conductive rod 16, a conductive cylinder 17 and a conductive plate 18, wherein the heat insulating layer 2 is bonded to an inner wall of the sealing case 1 through a structural adhesive, the long terminal 3 is embedded in a left side of the sealing case 1, the gasket 4 is fixedly connected to an inner wall of the sealing case 1, the piston plate 5 is seamlessly slid on the inner wall of the sealing case 1, the short terminal 6 is embedded in a bottom of the sealing case 1, the long terminal 3 and the short terminal 6 are both threaded between the two nuts 7, the long terminal 3 and the short terminal 6 are both movably inserted between, the right side fixedly connected with spring 9 of packing ring 4, the left side fixedly connected with metal pole 10 of piston plate 5, metal pole 10 runs through in insulating cylinder 11 seamlessly, insulating packing ring 12 and conductive tube 17's centre, the insulating backing plate of left side fixedly connected with 13 of metal pole 10, the seamless embedding in top of short connecting terminal 6 has telescopic link 14, the top fixedly connected with conductive spring 15 of short connecting terminal 6, the top fixedly connected with conductive rod 16 of long wiring end 3, the top fixedly connected with current conducting plate 18 of telescopic link 14.

Preferably, the inside of the sealed shell 1 is filled with mercury with an indefinite shape, the sealed shell 1 is in a U shape, the conducting rod 16 is in a J shape, the conducting rod 16 generates heat after being electrified, when the current is too large, the temperature of the conducting rod 16 rises sharply, the heat of the conducting rod 16 is absorbed by mercury, the mercury expands with heat and contracts with cold, the mercury pushes the piston plate 5 to move leftwards, the conducting plate 18 is staggered with the conducting cylinder 14, the long wiring terminal 3 and the short wiring terminal 6 cannot form a current loop, the current is cut off to protect the relay, the resistance of the mercury and the conducting rod 16 is very small, no large load is generated, the influence on the current is small, the gap between the conducting rod 16 and the heat preservation layer 2 is small, the heat conduction is fast, the heat preservation layer 2 can be used for placing heat loss, the device has the advantages of sensitive reaction, the repeated use and the like, the conducting plate 18 is tightly attached to the bottom, and the conducting plate 18 is clung to the bottom of the insulating cylinder 11, the conducting plate 18 is positioned right above the conducting spring 15, the right side of the spring 9 is abutted against the left side of the insulating pad 13, the diameter of the insulating pad 13 is larger than that of the conducting cylinder 17, the length of the insulating cylinder 11 is one fourth of that of the conducting cylinder 17, the diameters of the insulating cylinder 11, the insulating gasket 12 and the conducting cylinder 17 are all kept consistent, the insulating gasket 12 is positioned between the insulating cylinder 11 and the conducting cylinder 17, the length of the insulating cylinder 11 is larger than that of the conducting plate 18, the conducting plate 18 is in a curved surface shape, the conducting plate 18 is abutted against the left side of the piston plate 5, wiring holes are formed in the bottoms of the long terminal 3 and the short terminal 6, and the wiring holes are positioned between the two gaskets 8.

The working principle is as follows:

when the automatic relay protection device for the electric appliance is used, firstly, an electric wire penetrates through a wiring hole of a long wiring end 3, then the electric wire is turned to a nut 7 to move upwards on the long wiring end 3, two gaskets 8 clamp the electric wire, then another electric wire is connected to a short wiring end 6 according to the above, then the electric wire is connected in series to a relay, current sequentially flows through the long wiring end 3, a conductive rod 16, mercury, a piston plate 5, a metal rod 10, a conductive cylinder 17, a conductive plate 18, a conductive rod 16 and the short wiring end 6 to form a current loop, the conductive rod 16 generates heat after being electrified, when the current is overlarge, the temperature of the conductive rod 16 is rapidly increased, the heat of the conductive rod 16 can be absorbed by the mercury, the heat and cold shrinkage volume of the mercury can be increased, the mercury can push the piston plate 5 to move leftwards, the conductive plate 18 and the conductive cylinder 14 are staggered, and then the long wiring end 3 and the short wiring end 6 can, the purpose of protecting the relay is achieved by breaking the current, no current flows in the conducting rod 16, the temperature of the conducting rod 16 and the mercury is slowly reduced, the spring 9 pushes the insulating base plate 13, the piston plate 5 and the metal rod 10 to move rightwards, and the conducting cylinder 17 and the conducting plate 18 are contacted together again.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides an automatic relay protection device of electrical apparatus, includes sealed shell (1), heat preservation (2), long wiring end (3), packing ring (4), piston plate (5), short-circuit terminal (6), nut (7), gasket (8), spring (9), metal pole (10), insulating cylinder (11), insulating washer (12), insulating backing plate (13), telescopic link (14), electrically conductive spring (15), conducting rod (16), electrically conductive section of thick bamboo (17) and current conducting plate (18), its characterized in that: the inner wall of the sealing shell (1) is bonded with a heat preservation layer (2) through a structural adhesive, a long wiring end (3) is embedded in the left side of the sealing shell (1), a gasket (4) is fixedly connected with the inner wall of the sealing shell (1), a piston plate (5) is arranged on the inner wall of the sealing shell (1) in a seamless sliding mode, a short wiring end (6) is arranged in the bottom of the sealing shell (1) in an embedded mode, the long wiring end (3) and the short wiring end (6) penetrate through the middles of two nuts (7) in a threaded mode, the long wiring end (3) and the short wiring end (6) penetrate through the middles of two gaskets (8) in a movable mode, a spring (9) is fixedly connected to the right side of the gasket (4), a metal rod (10) is fixedly connected with the left side of the piston plate (5), and the metal rod (10) penetrates through the middles of an insulating cylinder (11), an, the left side fixedly connected with insulating backing plate (13) of metal pole (10), the seamless embedding in top of short wiring end (6) has telescopic link (14), the top fixedly connected with conductive spring (15) of short wiring end (6), the top fixedly connected with conducting rod (16) of long wiring end (3), the top fixedly connected with current conducting plate (18) of telescopic link (14).

2. The appliance automation relay protection device of claim 1, wherein: the inside of the sealing shell (1) is filled with mercury with an indefinite shape, the sealing shell (1) is U-shaped, and the conducting rod (16) is J-shaped.

3. The appliance automation relay protection device of claim 1, wherein: the conductive plate (18) is tightly attached to the bottom of the conductive cylinder (17), the conductive plate (18) is tightly attached to the bottom of the insulating cylinder (11), and the conductive plate (18) is located right above the conductive spring (15).

4. The appliance automation relay protection device of claim 1, wherein: the right side of the spring (9) abuts against the left side of the insulating base plate (13), the diameter of the insulating base plate (13) is larger than that of the conductive cylinder (17), and the length of the insulating cylinder (11) is one fourth of that of the conductive cylinder (17).

5. The appliance automation relay protection device of claim 1, wherein: the diameters of the insulating cylinder (11), the insulating washer (12) and the conductive cylinder (17) are kept consistent, and the insulating washer (12) is positioned between the insulating cylinder (11) and the conductive cylinder (17).

6. The appliance automation relay protection device of claim 1, wherein: the length of the insulating cylinder (11) is larger than that of the conductive plate (18), the conductive plate (18) is in a curved surface shape, and the conductive plate (18) abuts against the left side of the piston plate (5).

7. The appliance automation relay protection device of claim 1, wherein: the bottom of long wiring end (3) and short-circuit terminal (6) all opens and is provided with the wiring hole, and the wiring hole is for being located between two gaskets (8).