CN114975006A - Protective device for relay - Google Patents

Abstract

The invention relates to the technical field of electric switch elements, in particular to a protective device for a relay, which comprises: the protective housing, the marginal position of protective housing antetheca rotates installs sealed lid, the inner wall intermediate position fixed mounting of protective housing has the mounting bracket, install the relay main part on the mounting bracket. According to the invention, the cleaning mechanism is arranged, the motor drives the reciprocating screw rod to rotate, the limiting table can reciprocate along the reciprocating screw rod in the vertical direction, the electrostatic plate can adsorb free dust in the protective shell on the surface of the electrostatic plate, when the sliding block moves to the lowest end of the sliding groove to extrude the movable block, the movable block shrinks into the movable hole, the conductive head is separated from the conductive plate, so that the electrostatic plate is powered off, the dust adsorbed on the electrostatic plate can fall into the collecting box under the action of gravity, after the limiting table continues to move upwards, the electrostatic plate is powered on again to adsorb the dust, the dust can be prevented from being accumulated on the surface of the relay main body, and the heat dissipation of the relay main body is facilitated.

Description

Protective device for relay

Technical Field

The invention relates to the technical field of electric switch elements, in particular to a protective device for a relay.

Background

Relay (english name: relay) is an electric control device, when the change of input quantity (excitation quantity) reaches the specified requirement, it makes the controlled quantity produce a predetermined step change in the electric output circuit, it has the interactive relation between control system (also called input circuit) and controlled system (also called output circuit), usually applied to the automatic control circuit, it is actually an "automatic switch" which uses small current to control the operation of large current, so in the circuit it plays the role of automatic regulation, safety protection, switching circuit, etc.;

the relay is used as an important part of electronic components, the safety of the relay also needs to be paid great attention, and a device for protecting the relay is needed to be used in order to prevent the relay from being damaged manually or accidentally;

although the conventional relay protection device can protect the relay, the following defects still exist: in the use of relay, the dust is piled up on the surface of relay easily, influences the heat dissipation of relay, and when the electric current was too big, coil in the relay began to send out the boiling hot, does not break the electric current for a long time, will produce a lot of heats, and the heat can not in time discharge the back, and the relay can not bear, begins to smoke, after the coil continuously generates heat, can catch fire, and the intensity of a fire spreads and can cause the loss of a large amount of users.

Therefore, a protective device for a relay is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a protective device for a relay, which solves the technical problems that in the use process of the relay, dust is easy to accumulate on the surface of the relay to influence the heat dissipation of the relay, when the current is too large, a coil in the relay starts to be scalded, the current is not switched on for a long time, a lot of heat is generated, after the heat cannot be discharged in time, the relay cannot bear the heat and starts to smoke, and after the coil continuously heats, the relay can be ignited, and the fire spread can cause a large amount of loss of users.

In order to achieve the purpose, the invention provides the following technical scheme:

a protection device for a relay, comprising: a sealing cover is rotatably arranged at the edge position of the front wall of the protective shell, an installation frame is fixedly arranged at the middle position of the inner wall of the protective shell, a relay main body is arranged on the installation frame,

further comprising:

the fire extinguishing box is fixedly arranged on the top wall in the protective shell, two mounting grooves are formed in the front wall of the fire extinguishing box, sealing cans are movably mounted in the two mounting grooves, connectors matched with bottle openings of the sealing cans are mounted on the inner walls of the two mounting grooves, the other ends of the connectors are fixedly connected with guide pipes, the other ends of the two guide pipes are fixedly connected with a connecting pipe together, and the bottom end of the connecting pipe extends to the outside of the bottom wall of the fire extinguishing box and is fixedly connected with a spray head;

the induction mechanism is used for inducing fire in the protective shell and enabling the spray head to spray extinguishing agent;

the cleaning mechanism is used for cleaning free dust in the protective shell 1.

At first, open sealed lid, fix the relay main part in the mounting bracket, then close sealed lid, when using, when the electric current is too big, coil in the relay main part begins to send out the boiling hot, the electric current is not cut off for a long time, will produce a lot of heats, the relay can not bear, begin to smoke, after the coil lasts to generate heat, can catch fire, induction system begins to work this moment, the fire extinguishing agent in the sealed can spout in can following the shower nozzle through the direction of pipe and connector, put out a fire in the protective housing, can in time put out a fire, can avoid appearing the conflagration, can reduce user of service's loss, clearance mechanism can clear up the interior free dust of protective housing simultaneously, be favorable to the heat dissipation of relay main part.

Preferably, the cleaning mechanism comprises a motor arranged at the top end of the protective shell, an output end of the motor extends into the protective shell and is fixedly connected with a reciprocating screw rod, the reciprocating screw rod is provided with a limit table matched with the reciprocating screw rod, one end of the limit table close to the side wall of the protective shell is fixedly connected with a slide block, the inner wall of the protective shell is provided with a slide groove for moving the slide block, the other side of the limit table is fixedly connected with an electrostatic plate, the bottom wall of the slide groove is provided with a movable hole, a movable block is slidably mounted in the movable hole, the bottom end of the movable block is provided with a second spring, conductive heads electrically connected with a power supply are fixedly connected on the top walls at two sides of the movable block, conductive plates matched with the conductive heads are fixedly connected on the top walls of the movable hole and electrically connected with the electrostatic plates, a collecting box is also slidably mounted in the protective shell, and the collection box is positioned under the electrostatic plate.

When a user starts the motor, the motor can drive the reciprocating screw rod to rotate, so that the limiting table can reciprocate along the reciprocating screw rod in the vertical direction, the electrostatic plate can adsorb free dust in the protective shell on the surface of the electrostatic plate, when the limiting table moves to the upper part of the collecting box and is in contact with the collecting box, the sliding block moves to the lowest end of the sliding groove and extrudes the movable block, the movable block shrinks into the movable hole, the second spring is compressed, and the conductive head is separated from the conductive plate, so that the electrostatic plate is powered off, the dust adsorbed on the electrostatic plate can fall into the collecting box under the action of gravity, after the limiting table continues to move upwards, the second spring can push the movable block to move upwards to enable the conductive head to be in contact with the conductive plate, the electrostatic plate can be powered on again, the dust can be conveniently continuously adsorbed, and the dust can be prevented from being accumulated on the surface of the relay main body, the heat dissipation of the relay main body is facilitated.

Preferably, the induction mechanism is including seting up the activity groove in the case that puts out a fire, be provided with the heat conduction piece in the activity inslot, the bottom of heat conduction piece extends to the outer fixedly connected with heat-conducting plate of the diapire of the case that puts out a fire, one side fixedly connected with metal memory alloy silk of heat conduction piece, the other end fixedly connected with limiting plate of metal memory alloy silk, fixedly connected with sealing plug on the lateral wall that metal memory alloy silk was kept away from to the limiting plate, the vertical through-hole has been seted up on the sealing plug, set up the round hole with sealing plug matched with on the connecting pipe.

When the fire occurs in the relay main body, the heat conducting plate is ignited by the fire, the temperature begins to rise rapidly, the temperature of the heat conducting block fixedly connected with the heat conducting plate rises simultaneously, so that the metal memory alloy wire fixedly connected with the side wall of the heat conducting block can extend when being heated, the extension of the metal memory alloy wire can push the sealing plug on the limiting plate to move in the round hole, when the through hole on the sealing plug moves into the connecting pipe, the connecting pipe is dredged, the fire extinguishing agent in the sealing tank can be smoothly sprayed out from the spray head, the fire can be extinguished in time, after the fire is extinguished, the temperature of the heat conducting plate begins to be lowered, the temperatures of the heat conducting block and the metal memory alloy wire begin to be lowered simultaneously, so that the metal memory alloy wire begins to shrink, the sealing plug is dragged by the metal memory alloy wire, the connecting pipe can be plugged again, and the consumption of the fire extinguishing agent can be reduced, is convenient for continuous use.

Preferably, a thread groove is formed in the side wall, close to the connector, of the mounting groove, and a thread strip matched with the thread groove is arranged on the outer wall of the bottle mouth of the sealing tank.

After in the thread groove of the complete screw in mounting groove of the thread strip on the seal pot, the seal pot can be fixed in the mounting groove, and after the fire extinguishing agent in the seal pot used up, user of service counter-clockwise turning seal pot can take out the seal pot, can continue to use through replenishing the fire extinguishing agent in the seal pot, easy operation facilitates the use.

Preferably, the tip of seal pot bottleneck has been seted up with connector matched with jack, the lateral wall fixedly connected with air bag of jack, air bag is around establishing on the lateral wall of jack, and air bag's outer wall closely laminates with the lateral wall of connector.

After the connector inserts in the sealed jar, sealed gasbag can closely laminate with the outer wall of connector, can prevent that the fire extinguishing agent in the sealed jar from overflowing from the jack, and further can avoid the fire extinguishing agent extravagant.

Preferably, a cavity is formed in the side wall of the sealing can opening, the cavity is communicated with the sealing airbag, a telescopic rod is fixedly connected to the side wall of the cavity, a piston is fixedly connected to the other end of the telescopic rod, the piston is tightly attached to the side wall of the cavity, a first spring is wound on the outer side of the telescopic rod, one end of the first spring is fixedly connected to the side wall of the piston, and the other end of the first spring is fixedly connected to the side wall of the cavity.

After the connector contacts with sealed gasbag, sealed gasbag receives the extrusion, gas in the sealed gasbag can flow into in the cavity this moment, thereby gas can promote the piston and remove in to the cavity, can prevent that sealed gasbag from being pressed and exploding receiving extruded in-process, be favorable to sealed gasbag's use, first spring is in compression state this moment, and simultaneously, first spring under the compression state can extrude the piston, can make sealed gasbag keep sufficient state, can improve sealed effect.

Preferably, a limiting groove communicated with the jack is formed in the sealing tank, and a sealing plate is rotatably mounted in the limiting groove.

The jack can be plugged up to the closing plate, can ensure the leakproofness of seal pot.

Preferably, the two sides of the top end of the sealing plate are fixedly connected with rotating shafts, and torsion springs are wound on the rotating shafts.

After the closing plate received thrust, the closing plate can overturn at the spacing inslot, and when connector and jack separation, the torsional spring can exert thrust to the closing plate, can make the closing plate not receive laminating mutually with spacing groove top wall when the extrusion, can ensure the leakproofness of sealed tank.

Preferably, fixed mounting has bee calling organ on the lateral wall of protective housing, the control assembly who is used for starting bee calling organ still is provided with in the case that extinguishes fires, control assembly includes the connector lug of fixed mounting on the limiting plate lateral wall, and connector lug and power electric connection, fixedly connected with and connector lug matched with connection terminal on the lateral wall in activity groove, and connection terminal and bee calling organ electric connection.

The metal memory alloy silk is heated the in-process that promotes the limiting plate, and the connector lug can remove along with the limiting plate, and when connector lug and wire holder contact, bee calling organ began the circular telegram, and consequently bee calling organ can send the sound of dazzling, can remind the user of service personnel to break down, and the user of being convenient for in time maintains.

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

1. through the arrangement of the cleaning mechanism, after a user starts the motor, the motor can drive the reciprocating screw rod to rotate, so that the limiting table can reciprocate along the reciprocating screw rod in the vertical direction, the electrostatic plate can adsorb free dust in the protective shell on the surface of the electrostatic plate, when the limiting table moves to the upper part of the collecting box and is in contact with the collecting box, the sliding block moves to the bottommost end of the sliding groove and extrudes the movable block, the movable block shrinks into the movable hole, the second spring is compressed at the moment, the conductive head is separated from the conductive plate at the same time, the electrostatic plate is powered off, the dust adsorbed on the electrostatic plate can fall into the collecting box under the action of gravity, after the limiting table continues to move upwards, the second spring can push the movable block to move upwards to enable the conductive head to be in contact with the conductive plate, the electrostatic plate can be powered on again, and the dust can be conveniently continuously adsorbed, can prevent that the dust from piling up on relay main part surface, be favorable to relay main part's heat dissipation.

2. By arranging the induction mechanism, when the main body of the relay has a flame, the temperature of the heat conducting plate starts to rise rapidly after the heat conducting plate is burnt by the flame, and the temperature of the heat conducting block fixedly connected with the heat conducting plate rises simultaneously, so the metal memory alloy wire fixedly connected with the side wall of the heat conducting block can be extended when being heated, the seal plug on the limiting plate can be pushed to move in the round hole by the extension of the metal memory alloy wire, when the through hole on the seal plug moves into the connecting pipe, the connecting pipe is dredged, the fire extinguishing agent in the sealing tank can be smoothly sprayed out from the spray head, the flame can be extinguished in time, and after the flame is extinguished, the temperature of the heat conducting plate starts to be lowered, the temperatures of the heat conducting block and the metal memory alloy wire start to be lowered simultaneously, so that the metal memory alloy wire starts to shrink, the seal plug is dragged by the metal memory alloy wire, and the connecting pipe can be blocked again, can reduce the consumption of the fire extinguishing agent and is convenient to continue use.

3. Through setting up sealed gasbag, after the connector contacts with sealed gasbag, sealed gasbag receives the extrusion, gas in the sealed gasbag can flow into in the cavity this moment, thereby gas can promote the piston and remove in to the cavity, can prevent that sealed gasbag from being pressed and exploding receiving extruded in-process, be favorable to sealed gasbag's use, first spring is in compression state this moment, and simultaneously, first spring under the compression state can extrude the piston, can make sealed gasbag keep sufficient state, can improve sealed effect.

4. Through setting up control assembly, be heated the in-process that promotes the limiting plate at metal memory alloy silk, the connector lug can remove along with the limiting plate, and when connector lug and wire holder contact, bee calling organ began the circular telegram, and consequently bee calling organ can send harsh sound, can remind the user of service personnel to break down, and the user of being convenient for in time maintains.

Drawings

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

FIG. 2 is a bottom view of the fire box of the present invention;

FIG. 3 is a partial top cross-sectional view of the fire suppression box of the present invention;

FIG. 4 is an enlarged view of A of FIG. 3 according to the present invention;

FIG. 5 is a partial top cross-sectional view of the seal pot of the present invention;

FIG. 6 is a side sectional view of the fire box of the present invention;

FIG. 7 is an enlarged view of B of FIG. 5 in accordance with the present invention;

FIG. 8 is a schematic view of the seal plate of the present invention;

fig. 9 is a partial front cross-sectional view of the protective case of the present invention;

fig. 10 is an enlarged view of C of fig. 9 according to the present invention.

In the figure: 1. a protective shell; 3. a sealing cover; 4. a mounting frame; 5. a relay main body; 6. a buzzer; 7. a fire extinguishing box; 8. mounting grooves; 9. sealing the tank; 10. a heat conducting plate; 11. a spray head; 12. a telescopic rod; 13. a cavity; 14. a conduit; 15. a connecting pipe; 16. a connector; 17. a sealing plate; 18. a threaded strip; 19. a thread groove; 20. a movable groove; 21. a heat conducting block; 22. a metal memory alloy wire; 23. a sealing plug; 24. a through hole; 25. a jack; 26. a wire holder; 27. a connector lug; 28. a limiting plate; 29. sealing the air bag; 30. a rotating shaft; 31. a torsion spring; 32. a piston; 33. a first spring; 34. a motor; 35. a reciprocating screw rod; 36. an electrostatic plate; 37. a collection box; 38. a limiting table; 39. a chute; 40. a movable hole; 41. a second spring; 42. a conductive head; 43. a conductive plate; 44. a movable block; 45. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 8, the present invention provides a protection device for a relay, which has the following technical scheme:

a protection device for a relay, comprising: a sealing cover 3 is rotatably arranged at the edge position of the front wall of the protective shell 1, a mounting frame 4 is fixedly arranged at the middle position of the inner wall of the protective shell 1, a relay main body 5 is arranged on the mounting frame 4,

further comprising:

the fire extinguishing box 7 is fixedly arranged on the top wall in the protective shell 1, two mounting grooves 8 are formed in the front wall of the fire extinguishing box 7, sealing tanks 9 are movably mounted in the two mounting grooves 8, connectors 16 matched with bottle openings of the sealing tanks 9 are mounted on the inner walls of the two mounting grooves 8, the other ends of the connectors 16 are fixedly connected with guide pipes 14, the other ends of the two guide pipes 14 are fixedly connected with connecting pipes 15 together, and the bottom ends of the connecting pipes 15 extend to the outside of the bottom wall of the fire extinguishing box 7 and are fixedly connected with spray heads 11;

the induction mechanism is used for inducing fire in the protective shell 1 and enabling the spray head 11 to spray extinguishing agent;

the cleaning mechanism is used for cleaning free dust in the protective shell 1.

At first, open sealed lid 3, fix relay main part 5 in mounting bracket 4, then close sealed lid 3, when using, when the electric current is too big, coil in the relay main part 5 begins to scald, long-time uninterrupted current, will produce a lot of heats, relay main part 5 can not bear, begin to smoke, after the coil lasts to generate heat, can fire, induction system begins to work this moment, 11 blowout in the shower nozzle can be followed to the fire extinguishing agent in the seal pot 9 through the direction of pipe 14 and connector 16, put out a fire in protective housing 1, can in time put out the fire, can avoid appearing the conflagration, user of service's loss can be reduced, clearance mechanism can clear up the interior free dust of protective housing 1 simultaneously, be favorable to relay main part 5's heat dissipation.

As an embodiment of the present invention, referring to fig. 9-10, the cleaning mechanism includes a motor 34 disposed at the top end of the protective casing 1, an output end of the motor 34 extends into the protective casing 1 and is fixedly connected with a reciprocating screw 35, a limit table 38 matched with the reciprocating screw 35 is disposed on the reciprocating screw 35, a slider 45 is fixedly connected to one end of the limit table 38 close to the side wall of the protective casing 1, a sliding slot 39 for moving the slider 45 is disposed on the inner wall of the protective casing 1, an electrostatic plate 36 is fixedly connected to the other side of the limit table 38, a movable hole 40 is disposed on the bottom wall of the sliding slot 39, a movable block 44 is slidably mounted in the movable hole 40, a second spring 41 is disposed at the bottom end of the movable block 44, conductive plates 42 electrically connected to a power source are fixedly connected to the top walls of both sides of the movable block 44, conductive plates 43 matched with the conductive plates 42 are fixedly connected to the top walls of the movable hole 40, and the conducting plate 43 is electrically connected with the electrostatic plate 36, the collecting box 37 is further slidably mounted in the protective shell 1, and the collecting box 37 is located under the electrostatic plate 36.

After a user starts the motor 34, the motor 34 can drive the reciprocating screw 35 to rotate, so the limiting table 38 can reciprocate along the reciprocating screw 35 in the vertical direction, at this time, the electrostatic plate 36 can adsorb free dust in the protective shell 1 on the surface of the electrostatic plate 36, when the limiting table 38 moves above the collecting box 37 and contacts with the collecting box 37, at this time, the sliding block 45 moves to the bottommost end of the sliding groove 39 and extrudes the movable block 44, the movable block 44 contracts into the movable hole 40, at this time, the second spring 41 is compressed, and at the same time, the conductive head 42 is separated from the conductive plate 43, so the electrostatic plate 36 is powered off, so that the dust adsorbed on the electrostatic plate 36 can fall into the collecting box 37 under the action of gravity, after the limiting table 38 continues to move upwards, at this time, the second spring 41 can push the movable block 44 to move upwards, so that the conductive head 42 contacts with the conductive plate 43, can make the static board 36 circular telegram once more, conveniently continue to adsorb the dust, can prevent that the dust from piling up on relay main body 5 surface, be favorable to relay main body 5's heat dissipation.

As an embodiment of the present invention, referring to fig. 6-7, the sensing mechanism includes a movable groove 20 opened in the fire extinguishing box 7, a heat conducting block 21 is disposed in the movable groove 20, a heat conducting plate 10 is fixedly connected to the bottom end of the heat conducting block 21 and extends to the outside of the bottom wall of the fire extinguishing box 7, a metal memory alloy wire 22 is fixedly connected to one side of the heat conducting block 21, a limiting plate 28 is fixedly connected to the other end of the metal memory alloy wire 22, a sealing plug 23 is fixedly connected to the side wall of the limiting plate 28 away from the metal memory alloy wire 22, a through hole 24 is vertically perforated on the sealing plug 23, and a circular hole matched with the sealing plug 23 is perforated on the connecting pipe 15.

When the relay main body 5 is ignited by the flame, the temperature of the heat conducting plate 10 starts to rise rapidly, and at the same time, the temperature of the heat conducting block 21 fixedly connected with the heat conducting plate 10 rises simultaneously, so that the metal memory alloy wire 22 fixedly connected with the side wall of the heat conducting block 21 can be heated to extend, the metal memory alloy wire 22 can push the sealing plug 23 on the limiting plate 28 to move in the circular hole, when the through hole 24 on the sealing plug 23 moves into the connecting pipe 15, the connecting pipe 15 is dredged at the moment, so that the fire extinguishing agent in the sealing tank 9 can be smoothly sprayed out from the spray head 11, the flame can be extinguished in time, and after the flame is extinguished, the temperature of the heat conducting plate 10 starts to be lowered, and simultaneously the temperatures of the heat conducting block 21 and the metal memory alloy wire 22 start to be contracted, at the moment, the sealing plug 23 is sealed by the metal memory alloy wire 22, so that the sealing plug 23 can block the connecting pipe 15 again, can reduce the consumption of the fire extinguishing agent and is convenient to continue use.

3-4, a thread groove 19 is formed on the side wall of the mounting groove 8 close to the connecting head 16, and a thread strip 18 matched with the thread groove 19 is arranged on the outer wall of the bottle mouth of the sealing can 9.

After in the complete screw in thread groove 19 in the mounting groove 8 of the thread strip 18 on the seal pot 9, seal pot 9 can be fixed in mounting groove 8, and after the fire extinguishing agent in seal pot 9 used up, user's anticlockwise rotation seal pot 9 can take out seal pot 9, can continue to use easy operation, facilitates the use through replenishing the fire extinguishing agent in seal pot 9.

4-5, the end of the mouth of the sealed can 9 is provided with an insertion hole 25 matched with the connector 16, the side wall of the insertion hole 25 is fixedly connected with a sealed air bag 29, the sealed air bag 29 is wound on the side wall of the insertion hole 25, and the outer wall of the sealed air bag 29 is tightly attached to the side wall of the connector 16.

After the connector 16 is inserted into the sealing tank 9, the sealing air bag 29 can be tightly attached to the outer wall of the connector 16, so that the fire extinguishing agent in the sealing tank 9 can be prevented from overflowing from the jack 25, and the waste of the fire extinguishing agent can be further avoided.

Referring to fig. 5, as an embodiment of the present invention, a cavity 13 is formed in a side wall of a bottle opening of the sealed can 9, the cavity 13 is communicated with the sealed airbag 29, a telescopic rod 12 is fixedly connected to the side wall of the cavity 13, a piston 32 is fixedly connected to the other end of the telescopic rod 12, the piston 32 is tightly attached to the side wall of the cavity 13, a first spring 33 is wound around the outer side of the telescopic rod 12, one end of the first spring 33 is fixedly connected to the side wall of the piston 32, and the other end of the first spring 33 is fixedly connected to the side wall of the cavity 13.

After the connector 16 contacts with the sealing airbag 29, the sealing airbag 29 is squeezed, at the moment, gas in the sealing airbag 29 can flow into the cavity 13, so that the gas can push the piston 32 to move into the cavity 13, the sealing airbag 29 can be prevented from being pressed and exploded in the squeezing process, the sealing airbag 29 is favorable for being used, at the moment, the first spring 33 is in a compression state, meanwhile, the first spring 33 in the compression state can squeeze the piston 32, the sealing airbag 29 can be kept in a filling state, and the sealing effect can be improved.

Referring to fig. 3 to 5, as an embodiment of the present invention, a limit groove communicated with the insertion hole 25 is formed in the seal can 9, and the seal plate 17 is rotatably installed in the limit groove.

The sealing plate 17 can close the insertion hole 25, and can ensure the sealing property of the sealing can 9.

Referring to fig. 8, a rotating shaft 30 is fixedly connected to both sides of the top end of the sealing plate 17, and a torsion spring 31 is wound around the rotating shaft 30.

When the sealing plate 17 receives thrust, the sealing plate 17 can overturn in the limiting groove, and when the connecting head 16 is separated from the jack 25, the torsion spring 31 can apply thrust to the sealing plate 17, so that the sealing plate 17 can be attached to the top wall of the limiting groove when not extruded, and the sealing performance of the sealing can 9 can be guaranteed.

As an embodiment of the present invention, referring to fig. 1 and 7, a buzzer 6 is fixedly mounted on a sidewall of a protective casing 1, a control component for starting the buzzer 6 is further disposed in the fire extinguishing box 7, the control component includes a connector lug 27 fixedly mounted on a sidewall of a limiting plate 28, the connector lug 27 is electrically connected to a power supply, a connector base 26 matched with the connector lug 27 is fixedly connected to a sidewall of the movable groove 20, and the connector base 26 is electrically connected to the buzzer 6.

In the process that metal memory alloy silk 22 is heated and promotes limiting plate 28, connector lug 27 can remove along with limiting plate 28, and when connector lug 27 and wire holder 26 contact, bee calling organ 6 began the circular telegram, and consequently bee calling organ 6 can send the sound of dazzling, can remind the user of service personnel to break down, and the user of being convenient for in time maintains.

The working principle is as follows: firstly, the sealing cover 3 on the protective shell 1 is opened, the relay main body 5 is fixed in the mounting rack 4 and connected with a circuit, then the sealing cover 3 is closed, when the current is too large, the coil in the relay main body 5 starts to be heated, and the current is not cut off for a long time, so that a lot of heat can be generated, the relay main body 5 can not bear and can start to smoke, when the coil continuously heats, the fire can be started, at the moment, the induction mechanism starts to work, after the heat conducting plate 10 is ignited by the flame, the temperature starts to quickly rise, at the moment, the temperature of the heat conducting block 21 fixedly connected with the heat conducting plate 10 rises simultaneously, therefore, the metal memory alloy wire 22 fixedly connected with the side wall of the heat conducting block 21 can extend when being heated, the metal memory alloy wire 22 can push the sealing plug 23 on the sealing plug 28 to move in the circular hole, when the through hole 24 on the sealing plug 23 moves into the connecting pipe 15, at the moment, the connecting pipe 15 is dredged, so that the fire extinguishing agent in the sealed tank 9 can be smoothly sprayed out from the spray head 11, and a fire can be extinguished in time, in the process that the metal memory alloy wire 22 is heated to push the limiting plate 28, the connector lug 27 can move along with the limiting plate 28, when the connector lug 27 is in contact with the connector base 26, the buzzer 6 starts to be powered on, so that the buzzer 6 can make a harsh sound to remind a user of a fault, so that the user can maintain the fire in time, and after the fire is extinguished, the temperature of the heat conducting plate 10 starts to be lowered, the temperatures of the heat conducting block 21 and the metal memory alloy wire 22 start to be lowered, so that the metal memory alloy wire 22 starts to be contracted, at the moment, the sealing plug 23 is dragged by the metal memory alloy wire 22, so that the connecting pipe 15 can be plugged again by the sealing plug 23, the consumption of the fire extinguishing agent can be reduced, the sealing plug is convenient to continue to use, and the connector lug 27 is separated from the connector base 26, the buzzer 6 stops working, when the fire extinguishing agent in the sealed tank 9 is used up, a user rotates the sealed tank 9 anticlockwise to take out the sealed tank 9, the sealed tank 9 is placed in the mounting groove 8 after the fire extinguishing agent is supplemented into the sealed tank 9, after the thread strip 18 on the sealed tank 9 is completely screwed into the thread groove 19 in the mounting groove 8, the sealed tank 9 can be fixed in the mounting groove 8 and can be used continuously, after the sealing plate 17 receives the thrust of the connector 16, the sealing plate 17 can turn over in the limit groove, when the connector 16 is separated from the jack 25, the torsion spring 31 can apply the thrust to the sealing plate 17, the sealing plate 17 can be attached to the top wall of the limit groove when not pressed, the sealing performance of the sealed tank 9 can be ensured, when the connector 16 is in use, the connector 16 is in contact with the sealed air bag 29, the sealed air bag 29 is pressed, at this time, the gas in the sealed air bag 29 can flow into the cavity 13, therefore, the gas can push the piston 32 to move towards the cavity 13, the sealed air bag 29 can be prevented from being pressed and exploded in the extrusion process, the sealed air bag 29 is favorably used, at the moment, the first spring 33 is in a compression state, meanwhile, the first spring 33 in the compression state can extrude the piston 32, the sealed air bag 29 can be kept in an inflated state, the sealing effect can be improved, when the sealed air bag is used, after a user starts the motor 34, the motor 34 can drive the reciprocating screw rod 35 to rotate, therefore, the limiting table 38 can reciprocate in the vertical direction along the reciprocating screw rod 35, at the moment, the electrostatic plate 36 can adsorb free dust in the protective shell 1 on the surface of the electrostatic plate 36, when the limiting table 38 moves to the upper part of the collecting box 37 and is in contact with the collecting box 37, at the moment, the sliding block 45 moves to the bottom end of the sliding groove 39 and extrudes the movable block 44, the movable block 44 contracts into the movable hole 40, the second spring 41 is compressed at this moment, the conductive head 42 is separated from the conductive plate 43, therefore, the static plate 36 is powered off, the dust adsorbed on the static plate 36 can fall into the collecting box 37 under the action of gravity, the limiting table 38 continues to move upwards, the second spring 41 can push the movable block 44 to move upwards at this moment, the conductive head 42 is made to contact with the conductive plate 43, the static plate 36 can be powered on again, the dust can be conveniently and continuously adsorbed, the dust can be prevented from being accumulated on the surface of the relay main body 5, and the heat dissipation of the relay main body 5 is facilitated.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. A protection device for a relay, comprising: the protective shell (1), a sealing cover (3) is rotatably arranged at the edge position of the front wall of the protective shell (1), an installation frame (4) is fixedly arranged at the middle position of the inner wall of the protective shell (1), a relay main body (5) is arranged on the installation frame (4), and the protective shell is characterized in that,

further comprising:

the fire extinguishing box (7) is fixedly installed on the top wall in the protective shell (1), two installation grooves (8) are formed in the front wall of the fire extinguishing box (7), sealing cans (9) are movably installed in the two installation grooves (8), connectors (16) matched with bottle openings of the sealing cans (9) are installed on the inner walls of the two installation grooves (8), a guide pipe (14) is fixedly connected to the other end of each connector (16), a connecting pipe (15) is fixedly connected to the other ends of the two guide pipes (14) together, and the bottom end of each connecting pipe (15) extends to the outside of the bottom wall of the fire extinguishing box (7) and is fixedly connected with a spray head (11);

the induction mechanism is used for inducing fire in the protective shell (1) and enabling the spray head (11) to spray extinguishing agent;

the cleaning mechanism is used for cleaning free dust in the protective shell (1).

2. The relay protection device according to claim 2, wherein: the cleaning mechanism comprises a motor (34) arranged at the top end of a protective shell (1), the output end of the motor (34) extends into a reciprocating screw rod (35) fixedly connected in the protective shell (1), a limiting table (38) matched with the reciprocating screw rod (35) is arranged on the reciprocating screw rod (35), a sliding block (45) is fixedly connected at one end of the limiting table (38) close to the side wall of the protective shell (1), a sliding groove (39) used for the sliding block (45) to move is formed in the inner wall of the protective shell (1), an electrostatic plate (36) is fixedly connected at the other side of the limiting table (38), a movable hole (40) is formed in the bottom wall of the sliding groove (39), a movable block (44) is arranged in the movable hole (40) in a sliding manner, a second spring (41) is arranged at the bottom end of the movable block (44), and conductive heads (42) electrically connected with a power supply are fixedly connected on the top walls of two sides of the movable block (44), the top wall of the movable hole (40) is fixedly connected with a conductive plate (43) matched with the conductive head (42), the conductive plate (43) is electrically connected with the electrostatic plate (36), a collecting box (37) is further installed in the protective shell (1) in a sliding mode, and the collecting box (37) is located under the electrostatic plate (36).

3. The relay protection device according to claim 1, wherein: response mechanism is including offering movable groove (20) in fire extinguishing box (7), be provided with heat conduction piece (21) in activity groove (20), the bottom of heat conduction piece (21) extends to the outer fixedly connected with heat-conducting plate (10) of diapire of fire extinguishing box (7), one side fixedly connected with metal memory alloy silk (22) of heat conduction piece (21), other end fixedly connected with limiting plate (28) of metal memory alloy silk (22), fixedly connected with sealing plug (23) on the lateral wall of metal memory alloy silk (22) is kept away from in limiting plate (28), through-hole (24) have been seted up in vertical running through on sealing plug (23), set up on connecting pipe (15) with sealing plug (23) matched with round hole.

4. A relay protection device according to claim 3, wherein: threaded grooves (19) are formed in the side wall, close to the connector (16), of the mounting groove (8), and threaded strips (18) matched with the threaded grooves (19) are arranged on the outer wall of the bottle opening of the sealing tank (9).

5. The relay protection device according to claim 4, wherein: jack (25) with connector (16) matched with are seted up to the tip of sealed tank (9) bottleneck, the lateral wall fixedly connected with air bag (29) of jack (25), air bag (29) are around establishing on the lateral wall of jack (25), and the outer wall of air bag (29) closely laminates with the lateral wall of connector (16).

6. The relay protection device according to claim 5, wherein: open cavity (13) in the lateral wall of seal pot (9) bottleneck, and cavity (13) are linked together with air bag (29), fixedly connected with telescopic link (12) on the lateral wall of cavity (13), other end fixedly connected with piston (32) of telescopic link (12), and piston (32) closely laminate with the lateral wall of cavity (13), the outside of telescopic link (12) is around being equipped with first spring (33), the one end of first spring (33) and the lateral wall fixed connection of piston (32), and the other end of first spring (33) and the lateral wall fixed connection of cavity (13).

7. The relay protection device according to claim 6, wherein: and a limiting groove communicated with the jack (25) is formed in the sealing tank (9), and a sealing plate (17) is rotatably mounted in the limiting groove.

8. The relay protection device according to claim 7, wherein: the sealing plate is characterized in that rotating shafts (30) are fixedly connected to two sides of the top end of the sealing plate (17), and torsion springs (31) are wound on the rotating shafts (30).

9. A relay protection device according to claim 3, wherein: fixed mounting has bee calling organ (6) on the lateral wall of protective housing (1), still be provided with the control assembly who is used for starting bee calling organ (6) in fire extinguishing chamber (7), control assembly includes connector lug (27) of fixed mounting on limiting plate (28) lateral wall, and connector lug (27) and power electric connection, fixedly connected with and connector lug (27) matched with connection terminal (26) on the lateral wall of activity groove (20), and connection terminal (26) and bee calling organ (6) electric connection.

Images