Switch cabinet contact overheating detection device

Abstract

A switch cabinet contact overheating detection device relates to a switch cabinet contact overheating detector and is characterized in that an air port is arranged on a bottom plate of a box body, an air suction port is arranged on a cover plate buckled on the box body, two ends of a collecting pipe respectively correspond to the air suction port and the air port, and a filter screen is sleeved on the collecting pipe on one side of the air port. The ends of the two electrode wires are located on the two sides of an air port of the collecting pipe respectively, the other ends of the two electrode wires are connected with the warning lamp and the lamp box respectively, the two electrode wires are led out of the lamp box and the warning lamp and then connected with a power source, a fan is arranged outside the air port of the box body, a motor in the middle of the fan is fixed to the air port through a Y-shaped fixing strip, and the fan is externally connected with the power source. The collecting pipe is controlled by the fan to enable copper steam to be gathered on the filter screen, electric conduction is formed when copper steam microparticles reach a certain amount, the battery supplies power to enable the warning lamp to give an alarm, and the copper steam generated by the contact of the switch cabinet due to overheating can be known.

Description

Technical Field

[0001] The present invention relates to a switch cabinet contact overheating detector, in particular to a switch cabinet contact overheating detection device. Background Art

[0002] The switchgear in power equipment is an important electrical equipment. It is used to open and close, control and protect electrical equipment during the power generation, transmission, distribution and energy conversion of the power system. The switchgear mainly enters the main control switch in the cabinet through an external line, and then enters each branch control switch. Each branch is configured according to the setting requirements. Most of them are equipped with instruments, automatic control, motor magnetic switches and various AC contactors. According to needs, some are equipped with high-voltage and low-voltage room switchgears, equipped with high-voltage busbars, disconnectors, load switches, operating mechanisms, mutual inductors and various protection devices; each step of contact disconnection is achieved through contacts of various structures. These contacts will have local heating and discharge when in use, and severe cases will cause ablation and burning. During the heating, discharge and ablation process of the contacts, metal particles such as copper vapor will appear. These copper vapor and other metal particles will accumulate in the switchgear for a long time and cannot be found or detected by equipment. As time goes by, if they are not handled and discovered, they will eventually lead to contact overheating and accidents. Summary of the Invention

[0003] The purpose of the present invention is to address the existing deficiencies and disclose a switch cabinet contact overheating detection device. The device controls a collection pipe through a fan to cause copper vapor to gather on a filter screen. When the copper vapor microparticles reach a certain amount, they become conductive. A battery provides power to cause a warning light to sound an alarm, thereby indicating that the switch cabinet contacts are generating copper vapor due to overheating.

[0004] In order to achieve the purpose of the present invention, this application discloses the following technical solutions: A switch cabinet contact overheat detection device comprises a box body, a cover plate, a collecting pipe, a filter screen, an electrode wire, a warning light, a power supply, a fan and a fixing mechanism, wherein an air port is provided on the bottom plate of the box body, an air intake port is provided on the cover plate buckled on the box body, two ends of the collecting pipe correspond to the air intake port and the air port respectively, a filter screen is provided on the collecting pipe on one side of the air port, the ends of two electrode wires are respectively located on both sides of the air port of the collecting pipe, the other ends of the two electrode wires are respectively connected to the warning light and the light box, the two electrode wires are led out from the light box and the warning light and then connected to the power supply, a fan is provided outside the air port of the box body, a motor in the middle of the fan is fixed to the air port by a "Y"-shaped fixing strip, and the fan is externally connected to the power supply; the overheat detection device is installed outside the air permeable mesh of the switch cabinet through the fixing mechanism, the fan introduces copper vapor from the air permeable mesh into the collecting pipe and deposits it on the filter screen, when the copper vapor microparticles reach a certain amount, the two electrode wires are connected, and the warning light is further lit.

[0005] The switch cabinet contact overheat detection device has steps around the box body near the upper opening, the cover plate is on the steps of the box body, and multiple screws pass through between the upper part and the upper end of the box body steps and are connected to the threaded holes around the cover plate.

[0006] In the switch cabinet contact overheat detection device, one end of the air intake of the collecting pipe is set as a thickened pipe, and a funnel pipe is set between the thickened pipe and the collecting pipe; the thickened pipe end of the collecting pipe is stuck in the annular groove set around the air intake of the cover plate.

[0007] The switch cabinet contact overheat detection device is provided with a plurality of annularly distributed protrusion blocks C around the air port of the box body, and the protrusion blocks C are clamped on the end of the collection pipe wrapped with the filter screen.

[0008] In the switch cabinet contact overheat detection device, the ends of the two electrode wires are bent and placed on both sides of the collection tube, the bare wires at the ends of the two electrode wires are bent and placed in the ports of the collection tube, and the filter screen wraps around the ends of the collection tube and is fixed by a fixing ring.

[0009] In the switch cabinet contact overheat detection device, the external power supply includes two forms: connecting to an external power source via a power cord or connecting to a battery. When a battery is used as the external power supply, raised blocks A are respectively provided on the two side walls of the box cavity near one side of the box body. The battery is clamped between the raised blocks A on one side of the box cavity and the two side walls near one side. The battery provides power to the fan via power cord B and to the warning light via power cord A.

[0010] In the switch cabinet contact overheat detection device, the positive pole of the battery is connected to the fan motor through the power cord B. A fan switch is provided in the middle of the positive power cord B. The fan switch passes through the switch hole of the box body and is exposed outside the box body. The negative pole loop of the fan power cord B passes through the wire hole provided on one side of the air outlet of the box body and is connected to the battery.

[0011] The switch cabinet contact overheat detection device is provided with a raised ring at intervals on the outside of the air port of the box body, the fan cover is stuck in the raised ring, and multiple screws pass through the raised ring in sequence and are connected to the screw holes of the fan cover. An exhaust port is provided in the middle of the bottom flat plate of the fan cover.

[0012] The switch cabinet contact overheat detection device has two electrode wires respectively connected to the light box, one of which passes through the light box and is directly connected to the battery, and the other electrode wire is connected to the warning light lamp holder in the light box. The warning light lamp holder in the light box is connected to the battery through the power cord A. The warning light is installed on the lamp holder of the warning light in the light box, and the light box is stuck in the raised block B set in the box cavity of the box body. The warning light passes through the lamp hole of the box body and is exposed outside the box body.

[0013] In the switch cabinet contact overheat detection device, the fixing mechanism is a magnet groove provided on both sides of the box body, and the two magnets are fixed in the two magnet grooves respectively.

[0014] Through the above disclosure, the beneficial effects of the present invention are: The switch cabinet contact overheat detection device described in the present invention generates a lot of copper vapor that accumulates in the switch cabinet for a long time when the contacts in the switch cabinet are heated, discharged and eroded. The copper vapor also contains metal particles and harmful gases. The present invention uses a fan to suck the copper vapor in the switch cabinet out of the air permeable mesh, and the air flows away through the filter. The copper vapor metal particles accumulate on the filter. When the copper vapor metal particles reach a certain amount, they connect two electrode wires to form a conductor. At this time, the two electrode wires are connected and the warning light emits a warning light using a battery. In this way, it can be known that the contacts in the switch cabinet have generated copper vapor due to overheating, providing a basis for further inspection and maintenance. The present invention uses a warning light to prompt that the copper vapor caused by contact overheating can be detected more quickly to prevent the switch cabinet from failing to detect the ablation of contact overheating, resulting in accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the box body of the present invention; Figure 3 This is a schematic diagram of the box cavity structure of the box body of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the collecting tube of the present invention; Figure 5 This is a schematic diagram of the current switchgear structure; In the figure: 1. Air intake; 2. Cover; 3. Magnet; 4. Raised block A; 5. Battery; 6. Power cord A; 7. Raised block B; 8. Fan switch; 9. Warning light; 10. Power cord B; 11. Raised ring; 12. Air outlet; 13. Fan cover; 14. Fan; 15. Fixing bar; 16. Screw; 17. Box body; 18. Raised block C; 19. Filter; 20. Fixing ring; 21. Electrode wire; 22. Collecting tube; 23. Light box; 24. Threaded hole; 25. Magnet slot; 26. Exhaust port; 27. Flat plate; 28. Screw hole; 29. ​​Box cavity; 30. Step; 31. Annular groove; 32. Wire hole; 33. Lamp hole; 34. Switch hole; 35. Thickened tube; 36. Funnel tube; 37. Switch cabinet; 38. Breathable net. DETAILED DESCRIPTION

[0016] The following will describe in detail the preferred embodiments of the present invention in conjunction with the accompanying drawings to provide a clearer understanding of the invention's objectives, features, and advantages. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate that the technical solution of the present invention is not limited to one embodiment.

[0017] Combined with attachment Figures 1 to 4The switch cabinet contact overheat detection device described in the invention comprises a box body 17, a cover plate 2, a collection pipe 22, a filter screen 19, an electrode line 21, a warning light 9, a power supply, a fan 14 and a fixing mechanism. A step 30 is provided around the box body 17 near the upper opening. The cover plate 2 is on the step 30 of the box body 17. A plurality of screws pass through between the upper part and the upper end of the step 30 of the box body 17 and are connected to the threaded holes 24 around the cover plate 2. An air port 12 is provided on the bottom plate of the box body 17. An air intake 1 is provided on the cover plate 2 buckled on the box body 17. One end of the air intake 1 of the collection pipe 22 is provided as a thickened pipe 35. A funnel pipe 36 is provided between the thickened pipe 35 and the collection pipe 22. The collection pipe 22 is provided with a plurality of screws. The end of the thickened tube 35 is stuck in the annular groove 31 set around the air inlet 1 of the cover plate 2, and the collection tube 22 corresponds to the air inlet 12. A filter screen 19 is set on the collection tube 22 on one side of the air inlet 12. The ends of the two electrode wires 21 are respectively bent and located on both sides of the collection tube 22. The bare wires at the ends of the two electrode wires 21 are bent and located in the ports of the collection tube 22. The filter screen 19 wraps the end of the collection tube 22 and is fixed by the fixing ring 20. A plurality of annularly distributed protrusions C18 are set around the air inlet 12 of the box body 17. The protrusions C18 are stuck in the end of the collection tube 22 wrapped with the filter screen 19 on the outside. The ends of the two electrode wires 21 are respectively located on both sides of the air inlet 12 of the collection tube 22. The wires 21 are respectively connected to the light box 23, wherein one electrode wire 21 passes through the light box 23 and is directly connected to the battery 5, and the other electrode wire 21 is connected to the lamp holder of the warning light 9 in the light box 23. The lamp holder of the warning light 9 in the light box 23 is connected to the battery 5 through the power line A6. The warning light 9 is installed on the lamp holder of the warning light 9 in the light box 23. The light box 23 is stuck in the raised block B7 set in the box cavity 29 of the box body 17. The warning light 9 passes through the lamp hole 33 of the box body 17 and is exposed outside the box body 17. A fan 14 is provided outside the air port 12 of the box body 17, and a raised ring 11 is provided at intervals on the outside of the air port 12 of the box body 17. The fan cover 13 is stuck in the raised ring 11 and is fixed by a plurality of screws 16 according to After passing through the raised ring 11 for the first time, it is connected to the screw hole 28 of the fan cover 13. An exhaust port 26 is provided in the middle of the bottom flat plate 27 of the fan cover 13. The motor in the middle of the fan 14 is fixed to the air port 12 through a "Y"-shaped fixing strip 15. The fan 14 is externally powered. The overheat detection device is installed on the outside of the air mesh 38 of the switch cabinet 37 through a fixing mechanism. The fixing mechanism is a magnet slot 25 provided on both sides of the box body 17. Two magnets 3 are respectively fixed in the two magnet slots 25. The fan 14 introduces the copper vapor from the air mesh 38 into the collection pipe 22 and deposits it on the filter 19. When the copper vapor microparticles reach a certain amount, the two electrode wires 21 are connected, and the warning light 9 is further illuminated.

[0018] Furthermore, the external power supply includes two forms: connecting to an external power supply using a power cord or connecting to a battery 5; when the battery 5 is used as an external power supply, protrusions A4 are respectively provided on the two side walls of the box cavity 29 close to one side of the box body 17, and the battery 5 is stuck between the protrusions A4 on one side of the box cavity 29 and the two side walls close to one side, and the battery 5 provides power to the fan 14 through the power cord B10 and to the warning light 9 through the power cord A6; the positive pole of the battery 5 is connected to the fan 14 motor through the power cord B10, and a fan switch 8 is provided in the middle of the positive power cord B10, and the fan switch 8 is exposed outside the box body 17 after passing through the switch hole 34 of the box body 17, and the negative pole loop of the fan 14 power cord B10 passes through the wire hole 32 provided on the side of the air inlet 12 of the box body 17 and is connected to the battery 5.

[0019] In the embodiment of the switch cabinet contact overheat detection device of the present invention, the box body 17, the cover plate 2 and the fan cover 13 of the present invention are made of heat-resistant thermosetting plastic; the collecting pipe 22 is made of glass; the filter screen 19 is made of Made of high temperature resistant rock wool cloth; Combined with attachment Figures 1 to 5 When in use, snap the magnets 3 on both sides of the box body 17 onto both sides of the air mesh 38 of the switch cabinet 37 so that the thickened tube 35 of the collection pipe 22 corresponds to the air mesh 38, then turn on the fan switch 8 to rotate the fan 14 to extract air. At this time, the still air in the switch cabinet enters the collection pipe 22 and is discharged outside through the air port 12 of the box body 17 and the exhaust port 26 of the fan cover 13. The time should be more than one hour. If there are copper vapor metal particles in the switch cabinet, the copper vapor metal particles will accumulate on the filter 19. When the copper vapor metal particles reach a certain amount, they will conduct electricity and make the warning light 9 light up. At this time, it can be confirmed that the contacts in the switch cabinet have overheated and ablated, and then the problem can be handed over to the power maintenance staff on duty for processing.

[0020] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications within the scope of the present invention. Such equivalents also fall within the scope defined by the appended claims.

[0021] The parts not described in detail in this invention are prior art.

Claims

1. A switch cabinet contact overheat detection device, comprising a box body (17), a cover plate (2), a collecting pipe (22), a filter (19), an electrode wire (21), a warning light (9), a power supply, a fan (14) and a fixing mechanism, wherein: An air port (12) is provided on the bottom plate of the box body (17), and an air inlet (1) is provided on the cover plate (2) buckled on the box body (17). The two ends of the collecting pipe (22) correspond to the air inlet (1) and the air port (12), respectively. A filter screen (19) is provided on the collecting pipe (22) on one side of the air port (12). The ends of the two electrode wires (21) are respectively located on both sides of the air port (12) of the collecting pipe (22). The other ends of the two electrode wires (21) are respectively connected to the warning light (9) and the light box (23). The two electrode wires (21) are led out from the light box (23) and the warning light (9). A power source is connected, and a fan (14) is provided outside the air port (12) of the box body (17). A motor in the middle of the fan (14) is fixed to the air port (12) through a "Y"-shaped fixing strip (15). The fan (14) is externally connected to a power source; an overheat detection device is installed outside the air permeable net (38) of the switch cabinet (37) through a fixing mechanism, and the fan (14) introduces copper vapor from the air permeable net (38) into the collection pipe (22) and deposits it on the filter (19). When the amount of copper vapor microparticles reaches a certain amount, the two electrode wires (21) are connected, and the warning light (9) is further illuminated.

2. The switch cabinet contact overheat detection device according to claim 1, characterized in that: Steps (30) are provided around the upper opening of the box body (17), and the cover plate (2) is located on the steps (30) of the box body (17). A plurality of screws pass through between the upper portion and the upper end of the steps (30) of the box body (17) and are connected to the threaded holes (24) around the cover plate (2).

3. The switch cabinet contact overheat detection device according to claim 1, characterized in that: One end of the air inlet (1) of the collecting pipe (22) is provided as a thickened pipe (35), and a funnel pipe (36) is provided between the thickened pipe (35) and the collecting pipe (22); the end of the thickened pipe (35) of the collecting pipe (22) is clamped in an annular groove (31) provided around the air inlet (1) of the cover plate (2).

4. The switch cabinet contact overheat detection device according to claim 1, characterized in that: A plurality of annularly distributed protrusions C (18) are provided around the air port (12) of the box body (17), and the protrusions C (18) are clamped on the end of the collection pipe (22) that wraps the filter screen (19) on the outside.

5. The switch cabinet contact overheat detection device according to claim 1, characterized in that: The ends of the two electrode wires (21) are respectively bent and located on both sides of the collecting tube (22). The bare wires at the ends of the two electrode wires (21) are bent and located in the ports of the collecting tube (22). The filter screen (19) wraps around the ends of the collecting tube (22) and is fixed by a fixing ring (20).

6. The switch cabinet contact overheat detection device according to claim 1, characterized in that: The external power supply includes two forms: connecting to an external power supply by using a power line or connecting to a battery (5); when the battery (5) is used as the external power supply, protrusions A (4) are respectively provided on the two side walls of the box cavity (29) close to one side of the box body (17), and the battery (5) is stuck between the protrusions A (4) on one side of the box cavity (29) and the two side walls close to one side, and the battery (5) provides power to the fan (14) through the power line B (10) and to the warning light (9) through the power line A (6).

7. The switch cabinet contact overheat detection device according to claim 1 or 6, characterized in that: The positive electrode of the battery (5) is connected to the fan (14) motor through the power line B (10). A fan switch (8) is provided in the middle of the positive power line B (10). The fan switch (8) passes through the switch hole (34) of the box body (17) and is exposed outside the box body (17). The negative pole loop of the fan (14) power line B (10) passes through the wire hole (32) provided on one side of the air port (12) of the box body (17) and is connected to the battery (5).

8. The switch cabinet contact overheat detection device according to claim 7, characterized in that: A raised ring (11) is provided at intervals outside the air port (12) of the box body (17), and the fan cover (13) is stuck in the raised ring (11). A plurality of screws (16) pass through the raised ring (11) in sequence and are connected to the screw holes (28) of the fan cover (13). An exhaust port (26) is provided in the middle of the bottom flat plate (27) of the fan cover (13).

9. The switch cabinet contact overheat detection device according to claim 1 or 6, characterized in that: Two electrode wires (21) are respectively connected to the light box (23), one of the electrode wires (21) passes through the light box (23) and is directly connected to the battery (5), and the other electrode wire (21) is connected to the lamp holder of the warning light (9) in the light box (23), and the lamp holder of the warning light (9) in the light box (23) is connected to the battery (5) through the power line A (6). The warning light (9) is installed on the lamp holder of the warning light (9) in the light box (23), and the light box (23) is stuck in the protruding block B (7) provided in the box cavity (29) of the box body (17). The warning light (9) passes through the lamp hole (33) of the box body (17) and is exposed outside the box body (17).

10. The switch cabinet contact overheat detection device according to claim 1, characterized in that: The fixing mechanism is a magnet groove (25) provided on both sides of the box body (17), and the two magnets (3) are fixed in the two magnet grooves (25) respectively.

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