Intelligent electric leakage automatic early warning and arc extinguishing device

Abstract

The invention discloses an intelligent electric leakage automatic early warning and arc extinguishing device which comprises a shell, a first armature and a second armature are installed on the two sides of the bottom end in the shell, a fixing base is installed on the tops of the horizontal ends of the first armature and the second armature, and the two ends of the bottom of the fixing base are connected with coil wiring terminals penetrating through the bottom of the shell. And open holes are formed in the bottom of the fixed seat, a metal rod capable of moving up and down is arranged in the open hole in the left side, and a movable iron sheet is hinged to the top of the front end face of the first armature. When a load is generated, the coil can quickly generate more heat due to a large current, so that the temperature near the coil is instantly and greatly increased and is far higher than the temperature during normal work, at the moment, the arranged bimetallic strip can deform to separate the metal rod on the left side from the open hole, so that a coil loop is disconnected, and the coil is prevented from being damaged. And the problem that the service life of the device is shortened due to part damage caused by long-time working during loading is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of relays, and in particular to an intelligent automatic leakage warning and arc extinguishing device. Background Art

[0002] Electricity is an indispensable infrastructure in modern life, and the popularity of electrical appliances has made our daily life more convenient. While enjoying convenient services, we cannot ignore the potential safety hazards brought about by the use of electrical appliances. It is an electrical control device, which is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity reaches the specified requirements.

[0003] When the relay contacts are in action, arcs are easily generated. This arc has a thermal effect and can easily cause contact erosion and bonding, thereby shortening the life of the relay. The arc will also radiate electromagnetic radiation to the outside, causing interference to surrounding equipment. Moreover, when the relay is overloaded, the intensity of the arc will increase, which may cause damage to the internal parts of the relay and reduce its service life.

[0004] Therefore, it is necessary to provide an intelligent leakage automatic warning and arc extinguishing device to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent automatic leakage warning and arc extinguishing device to solve the problems existing in the above-mentioned background technology. The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent automatic leakage warning and arc extinguishing device, comprising a shell, a first armature and a second armature are installed on both sides of the inner bottom end of the shell, a fixed seat is installed on the top of the horizontal ends of the first armature and the second armature, the two ends of the bottom of the fixed seat are connected with coil terminal blocks that pass through the bottom of the shell, an opening is opened at the bottom of the fixed seat, a metal rod that can move up and down is arranged inside the opening on the left side, a moving iron piece is hinged on the top of the front end surface of the first armature, and a contact mounting mechanism is installed at one end inside the shell.

[0007] Preferably, a first connecting plate is connected to the bottom of one end of the first armature, a first spring is installed on the top of the first connecting plate, and a second connecting plate installed on one end of the moving iron piece is connected to the top of the first spring.

[0008] Preferably, a bimetallic strip is installed at one end of the inner bottom of the fixing seat, the top protrusion of the bimetallic strip is connected to an insulating plate, the inside of the insulating plate is connected to a metal rod extending into the inside of the opening, and another group of metal rods is fixed inside the other opening.

[0009] Preferably, an iron core is arranged inside the fixing seat, and coils surrounding the outside of the iron core are arranged on the tops of the two metal rods.

[0010] Preferably, the contact mounting mechanism includes a metal block mounted at one end of the shell, a limiting groove is opened at one end of the metal plate, a fixing rod is installed inside the limiting groove, a movable sleeve is movably sleeved on the outer wall of the fixing rod, a second spring is connected to the outer wall of the movable sleeve, and a first static contact is connected to the outer wall of the movable sleeve, and a first moving contact is installed on the top of the moving iron sheet.

[0011] Preferably, a vertical groove is provided on the top of the metal block, a Z-shaped oil groove is provided at the bottom of the vertical groove, a piston plate is installed on the top of the Z-shaped oil groove, one end of the first moving contact is connected to a connecting rod, one end of the connecting rod is hinged to a vertical rod, an L-metal plate is connected to the bottom of the metal block, one end of the L-metal plate is provided with a movable groove connected to the Z-shaped oil groove, the bottom of the movable groove is connected to a bottom groove, a piston rod is provided at the vertical end damping of the bottom end of the Z-shaped oil groove, the bottom of the piston rod extends to the inside of the bottom groove, a fixing sleeve is fixed to the outer wall of the piston rod, the outer wall of the fixing sleeve is connected to a first insulating sleeve seat, a second moving contact is clamped inside the first insulating sleeve seat, a second insulating sleeve seat is fixed to one end of the L-metal plate, a second static contact is clamped inside the second insulating sleeve seat.

[0012] Preferably, a mounting block is installed on one side of the inner top of the shell, a Z-shaped oil hole penetrating the top of the shell is installed inside the mounting block, inner grooves are provided on both sides of the vertical end of the oil hole facing the top, a third spring is installed at one end of the inner groove away from the oil hole, the other end of the third spring is connected to a hemispherical block, a T-shaped block engaged with the hemispherical block is also provided inside the oil hole, and a limiting block is provided at the vertical end of the oil hole away from the top.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the present invention generates a load, the coil will quickly generate a lot of heat due to the large current, so that the temperature near the coil instantly rises sharply, which is much higher than the temperature during normal operation. At this time, the bimetallic strip can be deformed to separate the metal rod on the left from the opening, so that the coil loop is disconnected, thereby avoiding damage to parts due to long-term operation when the load occurs, resulting in a reduction in the service life of the device; When the circuit of the present invention is disconnected, the suction force of the iron core disappears, and the first spring is set to make the moving iron piece move upward. At this time, the first moving contact and the first static contact move upward at the same time but are not separated. At this time, the second moving contact and the second static contact begin to separate. Due to the load condition, the arc intensity generated at this time is relatively large, and the repulsive force is relatively strong, which can further accelerate the resetting of the first moving contact and the first static contact. Moreover, when the first moving contact and the first static contact are separated, the current circuit has disappeared. At this time, it is difficult for the separation to generate an arc with a large impact, so that the first moving contact and the first static contact are not easily damaged by the arc. Only the second moving contact and the second static contact need to be replaced regularly to greatly improve the service life of the device. The electric arc generated by the separation of the first moving contact and the first static contact in the present invention has a certain repulsive force, and the release of the compression elastic force of the first spring and the second spring allows the moving iron piece to move upward beyond its original position. At this time, the limit block is pushed upward by the vertical rod to move upward, thereby squeezing the oil to move the T-shaped block upward. At this time, the T-shaped block can extend to the outside of the shell to warn that the warning device is loaded, and the T-shaped block is fixed after being extended through the set third spring and hemispherical block to provide a warning effect. At this time, people need to reset the T-shaped block themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 This is an enlarged view of point A of the present invention; Figure 4 It is an enlarged view of B of the present invention; Figure 5 It is an enlarged view of point C of the present invention.

[0015] In the figure: 1, housing; 2, first armature; 3, second armature; 4, fixed seat; 401, iron core; 402, coil; 5, coil terminal; 6, opening; 7, metal rod; 8, moving iron sheet; 9, contact mounting mechanism; 901, metal block; 902, limit groove; 903, fixing rod; 904, movable sleeve; 905, second spring; 906, first static contact; 907, first moving contact; 10, first connecting plate; 11, first spring; 12, second connecting plate; 13, double Metal sheet; 14, insulating plate; 15, vertical groove; 16, oil tank; 17, piston plate; 18, connecting rod; 19, vertical rod; 20, L metal plate; 21, movable groove; 22, bottom groove; 23, piston rod; 24, fixed sleeve; 25, first insulating sleeve seat; 26, second moving contact; 27, second insulating sleeve seat; 28, second static contact; 29, mounting block; 30, oil hole; 31, inner groove; 32, third spring; 33, hemispherical block; 34, T-shaped block; 35, limit block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0018] See also Figure 1-5, an intelligent leakage automatic warning and arc extinguishing device, including a shell 1, a first armature 2 and a second armature 3 are installed on both sides of the bottom end of the shell 1, a fixing seat 4 is installed on the top of the horizontal ends of the first armature 2 and the second armature 3, and the two ends of the bottom of the fixing seat 4 are connected with coil terminal blocks 5 that penetrate the bottom of the shell 1. An opening 6 is opened at the bottom of the fixing seat 4, and a metal rod 7 that can move up and down is arranged inside the opening 6 on the left side. A moving iron piece 8 is hinged on the top of the front end surface of the first armature 2, and a contact mounting mechanism 9 is installed at one end of the shell 1.

[0019] like Figure 1-5 As shown, a first connecting plate 10 is connected to the bottom of one end of the first armature 2, a first spring 11 is installed on the top of the first connecting plate 10, and the top of the first spring 11 is connected to a second connecting plate 12 installed on one end of the moving iron piece 8. The first spring 11 is set so that the moving iron piece 8 can rotate up and down.

[0020] like Figure 1-5 As shown, a bimetallic strip 13 is installed at one end of the inner bottom of the fixing seat 4, and the top protrusion of the bimetallic strip 13 is connected to an insulating plate 14. The inside of the insulating plate 14 is connected to a metal rod 7 extending into the opening 6, and another group of metal rods 7 is fixed inside the other opening 6. The bimetallic strip 13 can be deformed to separate the metal rod 7 on the left from the opening 6, so that the coil 402 circuit is disconnected, thereby avoiding damage to parts due to long-term operation when load occurs, resulting in a reduction in the service life of the device.

[0021] like Figure 1-5 As shown, an iron core 401 is arranged inside the fixing seat 4, and a coil 402 surrounding the outside of the iron core 401 is arranged on the top of the two metal rods 7. The coil 402 generates current so that the iron core 401 generates suction so that the moving iron piece 8 moves downward to connect the contacts.

[0022] like Figure 1-5 As shown, the contact mounting mechanism 9 includes a metal block 901 mounted at one end of the shell 1, a limiting groove 903 is provided at one end of the metal plate 902, a fixing rod 904 is installed inside the limiting groove 903, a movable sleeve 905 is movably sleeved on the outer wall of the fixing rod 904, a second spring 906 is connected to the bottom of the movable sleeve 905, a first static contact 907 is connected to the outer wall of the movable sleeve 905, and a first moving contact 908 is installed on the top of the moving iron sheet 8. When the iron core 401 generates suction, the moving iron sheet 8 will move downward to first contact and connect with the first static contact 907, and then drive the two contacts to move downward to drive another group of contacts to connect to form a complete circuit.

[0023] like Figure 1-5As shown, a vertical groove 15 is formed on the top of the metal block 901, a Z-shaped oil groove 16 is formed on the bottom of the vertical groove 15, a piston plate 17 is installed on the top of the Z-shaped oil groove 16, a connecting rod 18 is connected to one end of the first moving contact 908, a vertical rod 19 is hinged to one end of the connecting rod 18, an L-shaped metal plate 20 is connected to the bottom of the metal block 901, a movable groove 21 connected to the Z-shaped oil groove 16 is formed on one end of the L-shaped metal plate 20, a bottom groove 22 is formed on the bottom of the movable groove 21, and the bottom end of the Z-shaped oil groove 16 is connected to the bottom of the movable groove 21. The vertical end damping is provided with a piston rod 23, the bottom of the piston rod 23 extends to the inside of the bottom groove 22, the outer wall of the piston rod 23 is fixed with a fixing sleeve 24, the outer wall of the fixing sleeve 24 is connected with a first insulating sleeve seat 25, the interior of the first insulating sleeve seat 25 is clamped with a second moving contact 26, one end of the L metal plate 20 is fixed with a second insulating sleeve seat 27, the interior of the second insulating sleeve seat 27 is clamped with a second static contact 28, when the vertical rod 19 moves downward, it will first be clamped with the piston plate 17, and the top of the piston plate 17 is provided with a vertical contact 26. The rod 19 engages with the card hole, and then drives the piston plate 17 to move downward to squeeze the oil so that the piston rod 23 moves downward so that the second moving contact 26 is connected to the second static contact 28 to form a complete circuit. When a load is generated, the current circuit will be disconnected. At this time, the suction force of the iron core 401 disappears. The movable iron sheet 8 is moved upward by the first spring 11 set. At this time, the first moving contact 908 and the first static contact 907 move upward at the same time but are not separated. At this time, the second moving contact 26 and the second static contact 28 begin to separate. Due to the load condition, the arc intensity generated at this time is large and the repulsive force is strong, which can further accelerate the resetting of the first moving contact 908 and the first static contact 907. Moreover, when the first moving contact 908 is separated from the first static contact 907, the current circuit has disappeared. At this time, the separation is unlikely to produce an arc with a large impact, making it difficult for the first moving contact 908 and the first static contact 907 to be damaged by the arc. Only the second moving contact 26 and the second static contact 28 need to be replaced regularly to greatly improve the service life of the device.

[0024] like Figure 1-5As shown, a mounting block 29 is installed on one side of the top of the housing 1, and a Z-shaped oil hole 30 penetrating the top of the housing 1 is installed inside the mounting block 29. Inner grooves 31 are provided on both sides of the vertical end of the oil hole 30 facing the top, and a third spring 32 is installed at one end of the inner groove 31 away from the oil hole 30. A hemispherical block 33 is connected to the other end of the third spring 32. A T-shaped block 34 engaged with the hemispherical block 33 is also provided inside the oil hole 30. A limit block 35 is provided at the vertical end of the oil hole 30 away from the top. The first moving contact 908 and the first static contact 90 7 The arc generated by the separation has a certain repulsive force, and the compression elastic force of the first spring 11 and the second spring 906 is released, so that the moving iron piece 8 can move upward beyond the original position. At this time, the limit block 35 is pushed upward by the vertical rod 19 to move upward, so that the oil can be squeezed to make the T-shaped block 34 move upward. At this time, the T-shaped block 34 will extend to the outside of the shell 1 to warn that the load phenomenon occurs in the early warning device, and the third spring 32 and the hemispherical block 33 are set to make the T-shaped block 34 extended and fixed, and people need to reset the T-shaped block 34 by themselves.

[0025] Working principle: When in use, current is passed through the coil 402. At this time, the iron core 401 generates suction to move the moving iron sheet 8 downward so that the first moving contact 908 contacts the first static contact 907. At this time, the vertical rod 19 will also move downward. During the downward movement of the vertical rod 19, it will first engage with the piston plate 17. The top of the piston plate 17 is provided with a card hole that engages with the vertical rod 19. Then the piston plate 17 is driven to move downward to squeeze the oil so that the piston rod 23 moves downward so that the second moving contact 26 is connected to the second static contact 28 to form a complete circuit. When a load is generated, the coil 402 will be rapidly moved due to the large current. The high speed generates a lot of heat, which makes the temperature near the coil 402 rise sharply instantly, which is much higher than the temperature during normal operation. At this time, the bimetallic strip 13 can be deformed to separate the metal rod 7 on the left from the opening 6, so that the coil 402 circuit is disconnected, avoiding damage to parts due to long-term operation under load, resulting in a reduction in the service life of the device. At this time, the suction force of the iron core 401 disappears, and the movable iron sheet 8 moves upward through the first spring 11. At this time, the first moving contact 908 and the first static contact 907 move upward at the same time but are not separated. At this time, the second moving contact 26 and The second static contact 28 begins to separate. Since it is under load, the arc intensity generated at this time is relatively large, and the repulsive force is relatively strong, which can further accelerate the resetting of the first moving contact 908 and the first static contact 907. Moreover, when the first moving contact 908 and the first static contact 907 are separated, the current loop has disappeared. At this time, it is difficult for the separation to produce an arc with a large impact, making it difficult for the first moving contact 908 and the first static contact 907 to be damaged by the arc. It only needs to regularly replace the second moving contact 26 and the second static contact 28 to greatly increase the service life of the device. The first moving contact 908 and the first static contact 907 are The arc generated by the separation of the contacts 907 has a certain repulsive force, and the release of the compression elastic force of the first spring 11 and the second spring 906 allows the moving iron piece 8 to move upward beyond the original position. At this time, the limit block 35 is pushed upward by the vertical rod 19 to move upward, thereby squeezing the oil to move the T-shaped block 34 upward. At this time, the T-shaped block 34 will extend to the outside of the shell 1 to warn that the warning device is loaded, and the third spring 32 and the hemispherical block 33 are set to make the T-shaped block 34 extended and fixed to provide a warning effect. At this time, people need to reset the T-shaped block 34 by themselves.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An intelligent leakage automatic warning and arc extinguishing device, comprising a housing (1), wherein a first armature (2) and a second armature (3) are mounted on both sides of the inner bottom end of the housing (1), characterized in that: A fixing seat (4) is installed at the top of the horizontal ends of the first armature (2) and the second armature (3); the two ends of the bottom of the fixing seat (4) are connected to coil connection terminals (5) that penetrate the bottom of the shell (1); an opening (6) is provided at the bottom of the fixing seat (4); a metal rod (7) that can move up and down is provided inside the opening (6) on the left side; a moving iron piece (8) is hinged at the top of the front end surface of the first armature (2); and a contact mounting mechanism (9) is installed at one end inside the shell (1).

2. The intelligent leakage automatic warning and arc extinguishing device according to claim 1 is characterized by: A first connecting plate (10) is connected to the bottom of one end of the first armature (2), a first spring (11) is installed on the top of the first connecting plate (10), and a second connecting plate (12) installed on one end of the moving iron plate (8) is connected to the top of the first spring (11).

3. The intelligent leakage automatic warning and arc extinguishing device according to claim 2 is characterized by: A bimetallic strip (13) is mounted on one end of the inner bottom of the fixing seat (4); a top protrusion of the bimetallic strip (13) is connected to an insulating plate (14); the interior of the insulating plate (14) is connected to a metal rod (7) extending into the interior of the opening (6); another group of metal rods (7) is fixed inside the other opening (6).

4. The intelligent leakage automatic warning and arc extinguishing device according to claim 3 is characterized by: An iron core (401) is disposed inside the fixing seat (4), and coils (402) surrounding the outside of the iron core (401) are disposed on the tops of the two metal rods (7).

5. The intelligent leakage automatic warning and arc extinguishing device according to claim 4 is characterized in that: The contact mounting mechanism (9) comprises a metal block (901) mounted at one end of the housing (1); a limiting groove (902) is provided at one end of the metal block (901); a fixing rod (903) is mounted inside the limiting groove (902); a movable sleeve (904) is movably sleeved on the outer wall of the fixing rod (903); a second spring (905) is connected to the bottom of the movable sleeve (904); a first static contact (906) is connected to the outer wall of the movable sleeve (904); and a first moving contact (907) is mounted on the top of the moving iron sheet (8).

6. The intelligent leakage automatic warning and arc extinguishing device according to claim 5 is characterized by: The top of the metal block (901) is provided with a vertical groove (15), the bottom of the vertical groove (15) is provided with a Z-shaped oil groove (16), the top of the Z-shaped oil groove (16) is provided with a piston plate (17), one end of the first moving contact (907) is connected to a connecting rod (18), one end of the connecting rod (18) is hinged to a vertical rod (19), the bottom of the metal block (901) is connected to an L-shaped metal plate (20), one end of the L-shaped metal plate (20) is provided with a movable groove (21) connected to the Z-shaped oil groove (16), the bottom of the movable groove (21) is connected to A bottom groove (22) is provided through the Z-shaped oil groove (16); a piston rod (23) is provided at the bottom vertical end damping; the bottom of the piston rod (23) extends into the bottom groove (22); a fixing sleeve (24) is fixed to the outer wall of the piston rod (23); a first insulating sleeve (25) is connected to the outer wall of the fixing sleeve (24); a second moving contact (26) is clamped inside the first insulating sleeve (25); a second insulating sleeve (27) is fixed to one end of the L-shaped metal plate (20); a second static contact (28) is clamped inside the second insulating sleeve (27).

7. The intelligent leakage automatic warning and arc extinguishing device according to claim 6 is characterized by: A mounting block (29) is installed on one side of the top of the housing (1), a Z-shaped oil hole (30) penetrating the top of the housing (1) is installed inside the mounting block (29), inner grooves (31) are provided on both sides of the vertical end of the oil hole (30) facing the top, a third spring (32) is installed at one end of the inner groove (31) away from the oil hole (30), the other end of the third spring (32) is connected to a hemispherical block (33), a T-shaped block (34) engaged with the hemispherical block (33) is further provided inside the oil hole (30), and a limit block (35) is provided at the vertical end of the oil hole (30) away from the top.

Images