Switch cabinet cable contact overheating detector

Abstract

A switch cabinet cable contact overheat detector relates to a switch cabinet inner terminal overheat detector, and is characterized in that springs are arranged at the upper parts of at least two reamed holes arranged at the lower part of an inner fixed block, the upper part of a tensioning belt passes through a slim hole and then the upper end is connected with a contact, a circular plate abuts against the lower ends of the springs, and the bottom surface of the circular plate is connected with one end of a wire B; a copper sheet fixed at the lower part of the reamed hole is fixedly connected with one end of a lead A, and the other ends of the lead A and the lead B are respectively connected with copper rings in at least two jacks which are arranged on the wire board at intervals; one end of the measurer is provided with two plugs, one of the two plugs is connected with one end of a power line B, the other end of the power line B is connected with the negative electrode of a button cell, the positive electrode of the button cell is connected with one end of a power line A, an indicating lamp arranged in the middle of the power line A is exposed outside the measurer, and the other end of the power line A is connected with the other one of the two plugs. According to the invention, the tensioning belt is fused after the contact is overheated, so that the overheat of the cable contact can be directly obtained by the measurer.

Description

Technical Field

[0001] The present invention relates to a terminal overheating detector in a switch cabinet, in particular to a switch cabinet cable contact overheating detector, and more particularly to a cable terminal or contact overheating detector in a switch cabinet. Background Art

[0002] The switch cabinet cable terminal is an important component installed in the switch cabinet for power access, sub-itemization, and connection to intelligent monitoring equipment. Due to the closed position of the cable connector terminal and the closed position of the busbar connection node, the upper contact of the trolley, and the lower contact of the trolley, it is extremely important for timely detection of potential overheating faults. It is also an accurate assessment of the health status of the switch cabinet. At present, the detection of overheating of cable connectors, busbar connection nodes, upper contact of the trolley, and lower contact of the trolley can only be achieved through frequent cabinet opening and maintenance, followed by fault diagnosis and analysis, and by observing whether melting occurs and replacing components. If there is no melting phenomenon, it is difficult to detect potential risks. This management method is inefficient and it is not easy to detect problems in a timely manner. Summary of the Invention

[0003] The purpose of the present invention is to solve the existing deficiencies and disclose a switch cabinet cable contact overheating detector. When the contact is overheated, the tensioning band is melted and the overheating of the cable contact can be directly detected by a measuring device.

[0004] In order to achieve the purpose of the present invention, this application discloses the following technical solutions: A switch cabinet cable contact overheat detector comprises an internal fixing block, a spring, a tensioning band, a conductor, a copper sheet, a wire board, and a measuring device. The internal fixing block is fixed to the lower cabinet body of the contact in the switch cabinet. The upper portions of at least two expanded holes provided in the lower portion of the internal fixing block are respectively provided with springs. The upper portion of the tensioning band passes through the fine hole in the upper portion of the internal fixing block and is connected to the contact of the switch cabinet at its upper end. A circular plate at the lower end of the tensioning band rests on the lower end of the spring. The bottom surface of the circular plate is fixedly connected to one end of conductor B. The copper sheet is fixed to the lower portion of the expanded hole. The copper sheet is fixedly connected to one end of conductor A. The other ends of conductors A and B are respectively connected to copper rings in at least two jacks spaced apart on the wire board provided outside the switch cabinet. One end of the handheld measuring device is provided with two plugs, one of which is connected to one end of power cord B, the other end of power cord B is connected to the negative terminal of a button battery, and the positive terminal of the button battery is connected to one end of power cord A. An indicator light provided in the middle of power cord A is exposed outside the measuring device, and the other end of power cord A is connected to the other of the two plugs.

[0005] The switch cabinet cable contact overheating detector includes one, two or three expanded holes provided on the lower part of the inner fixing block; and two, four or six jacks and copper rings provided on the wire board.

[0006] The switch cabinet cable contact overheat detector is provided with a flat hole running through the front and back at the lower part of the expanded hole of the inner fixing block, a copper sheet is inserted into the flat hole, a connecting hole is provided on the flat hole, one end of the wire A is passed through the connecting hole of the copper sheet and is tightened by being bent back to form a fixed connection; inner wide holes with a small outside and a large inside are provided at intervals at the upper part of the flat hole, one end of the wire B passes through the inner wide holes and is fixedly connected to the lower surface of the circular plate by a wire lock.

[0007] The switch cabinet cable contact overheat detector is provided with multiple holes on the lower surface of the circular plate, and multiple plug-in plates are provided on the upper part of the four sides of the wire lock. The multiple plug-in plates around the wire lock are respectively inserted into the multiple holes of the circular plate and then bent inward to form a fixed connection. One end of the wire B is fixedly connected to the connection hole of the wire lock.

[0008] The switch cabinet cable contact overheat detector, the measuring device includes a semicircular tube, a semicircular buckle cover, a plug, a power cord B, a button battery, a power cord A, an indicator light and a screw; a semicircular plate is provided at one end of the semicircular tube, two semicircular grooves are provided on the semicircular plate at intervals, a semicircular closing block is provided at the other end of the semicircular tube, a semicircular clamping groove is provided on the semicircular closing block, and two inner protruding tubes are provided at intervals in the middle of the semicircular tube; a semicircular plate is provided at one end of the semicircular buckle cover, two semicircular grooves are provided on the semicircular plate at intervals, a semicircular plate closing block is provided at the other end of the semicircular buckle cover, a semicircular clamping groove is provided on the semicircular plate closing block, and the middle of the semicircular buckle cover is provided with a semicircular plate. Two inner protruding screw holes are provided in between; the positive electrode and negative electrode of the button battery placed in the semicircular clamping groove of the semicircular tube are respectively connected to the other end of the power cord B and one end of the power cord A; one end of the power cord B is connected to the inner end of the plug; the annular groove of the plug near the inner end is clamped in the semicircular groove of the semicircular tube; the other end of the power cord A is connected to the inner end of the other plug; the annular groove of the other plug near the inner end is clamped in the other semicircular groove of the semicircular tube; the indicator light in the middle of the power cord A is inserted into the lamp socket provided on the semicircular buckle cover; the semicircular buckle cover is buckled on the semicircular tube, and two screws are respectively passed through the inner protruding tube of the semicircular tube and connected to the two inner protruding screw holes of the semicircular buckle cover.

[0009] The switch cabinet cable contact overheat detector is provided with a pit and a protrusion on the opposite ends of the semicircular tube and the semicircular buckle cover respectively. After the semicircular tube and the semicircular buckle cover are buckled together, the protrusion of the semicircular buckle cover is inserted into the pit of the semicircular tube.

[0010] The switch cabinet cable contact overheat detector is provided with an annular wire groove near the inner end of the two plugs.

[0011] The switch cabinet cable contact overheat detector is provided with a reducing head from the middle to the outer end of the two plugs.

[0012] The switch cabinet cable contact overheat detector has a wire trough for placing the power line B arranged around the semicircular clamping groove of the semicircular tube and semicircular closing block.

[0013] Through the above disclosure, the beneficial effects of the present invention are: The switch cabinet cable contact overheat detector described in the present invention utilizes the connection between a tensioning band and a portion of the switch cabinet cable contact that is prone to overheating. When a hot portion of the cable contact appears, the tensioning band will be melted and lose its tension. At this time, the uncontrolled tensioning band circular plate, under the action of a spring, connects wire A and wire B through a wire lock and a copper sheet. After wire A and wire B are connected, they are respectively inserted into the plug of the measuring device through the two jacks of the wire plate. After power is provided by a button battery, the indicator light lights up, and the tensioning band connection portion can be accurately determined to be the overheating portion, providing an accurate clue for maintenance. The present invention has low maintenance costs and can provide a reliable basis for timely detection of overheating of contacts in hidden parts of the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the internal fixing block of the present invention; Figure 3 yes Figure 2 AA view; Figure 4 It is a schematic diagram of the three-dimensional structure of the disc and wire buckle lock of the present invention; Figure 5 This is a schematic diagram of the three-dimensional assembly structure of the measuring device of the present invention; Figure 6 This is a schematic diagram of the installation position of the present invention in the switch cabinet; In the figure: 1. Tensioning band; 2. Measuring device; 3. Indicator light; 4. Plug; 5. Round plate; 6. Wire lock; 7. Thin hole; 8. Inner wide hole; 9. Copper sheet; 10. Wire plate; 11. Socket; 12. Copper ring; 13. Inner fixing block; 14. Spring; 15. Wire A; 16. Wire B; 17. Expanded hole; 18. Flat hole; 19. Socket; 20. Plug plate; 21. Raised block; 22. Semicircular clamping groove; 23. , inner raised screw hole; 24, button battery; 25, semicircular buckle cover; 26, lamp holder; 27, reducing head; 28, annular slot; 29, annular wire duct; 30, pit; 31, semicircular slot; 32, inner raised tube; 33, semicircular tube; 34, power cord A; 35, power cord B; 36, wire duct; 37, switch cabinet; 38, busbar connection node; 39, upper contact of trolley; 40, lower contact of trolley; 41, cable connector. DETAILED DESCRIPTION

[0015] 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.

[0016] Combined with attachment Figures 1 to 5 The switch cabinet cable contact overheat detector described in the invention comprises an internal fixing block 13, a spring 14, a tensioning belt 1, a wire, a copper sheet 9, a wire plate 10 and a measuring device 2. The internal fixing block 13 is fixed to the lower cabinet of the contact in the switch cabinet. The reaming hole 17 provided at the lower part of the internal fixing block 13 includes one, two or three reaming holes 17. The present invention preferably has three reaming holes 17. A flat hole 18 that passes through the front and back is provided at the lower part of the reaming hole 17 of the internal fixing block 13. The copper sheet 9 is inserted into the flat hole 18. The flat hole 18 is provided with a connecting hole. At least two reaming holes are provided at the lower part of the internal fixing block 13. The upper part of the expanded hole 17 is respectively provided with a spring 14, and the upper end of the tensioning belt 1 is connected to the contact of the switch cabinet after passing through the fine hole 7 on the upper part of the inner fixing block 13. The circular plate 5 at the lower end of the tensioning belt 1 is pressed against the lower end of the spring 14. The inner wide hole 8 with a small outside and a large inside is provided at intervals on the upper part of the flat hole 18. One end of the wire B16 passes through the inner wide hole 8 and is fixedly connected to the lower surface of the circular plate 5 through the wire buckle 6. Specifically, a plurality of jacks 19 are provided on the lower surface of the circular plate 5, and a plurality of plugs 20 are provided on the upper part around the wire buckle 6. The plurality of plugs 20 around the wire buckle 6 are respectively inserted into The multiple sockets 19 of the circular plate 5 are bent inward to form a fixed connection, one end of the wire B16 is fixedly connected to the connection hole of the wire lock 6, and one end of the wire A15 is passed through the connection hole of the copper sheet 9 and is tightened by bending back to form a fixed connection; the copper sheet 9 is fixed to the lower part of the expanded hole 17, the copper sheet 9 is fixedly connected to one end of the wire A15, and the other ends of the wire A15 and the wire B16 are respectively connected to the copper rings 12 in at least two sockets 11 spaced apart on the wire board 10 provided outside the switch cabinet, and a copper ring 12 is provided in each socket 11 provided on the wire board 10. 2, formed by two jacks 11 in a group, that is, provided in one, two, or three groups. More specifically, the jacks 11 may include two, four, or six. One end of the handheld measuring instrument 2 is provided with two plugs 4, one of which is connected to one end of the power cord B35. The other end of the power cord B35 is connected to the negative terminal of the button battery 24. The positive terminal of the button battery 24 is connected to one end of the power cord A34. An indicator light 3 provided in the middle of the power cord A34 is exposed on the outside of the measuring instrument 2. The other end of the power cord A34 is connected to the other of the two plugs 4.

[0017] Combined with attachment Figure 1Or 5, the measuring device 2 includes a semicircular tube 33, a semicircular buckle cover 25, a plug 4, a power cord B35, a button battery 24, a power cord A34, an indicator light 3 and a screw; a semicircular plate is provided at one end of the semicircular tube 33, two semicircular grooves 31 are provided on the semicircular plate, and a semicircular closing block is provided at the other end of the semicircular tube 33, a semicircular clamping groove 22 is provided on the semicircular closing block, and two inner protrusions 32 are provided at intervals in the middle of the semicircular tube 33; a semicircular buckle cover 25 is provided at one end of the semicircular plate, the semicircular Two semicircular grooves 31 are provided at intervals on the plate, and a semicircular plate closing block is provided at the other end of the semicircular buckle cover 25. A semicircular clamping groove 22 is provided on the semicircular plate closing block, and two inner protruding screw holes 23 are provided at intervals in the middle of the semicircular buckle cover 25; the positive and negative electrodes of the button battery 24 placed in the semicircular clamping groove 22 of the semicircular tube 33 are respectively connected to the other end of the power line B35 and one end of the power line A34, and a wire groove 3 for placing the power line B35 is provided on one side of the semicircular clamping groove 22 of the semicircular closing block of the semicircular tube 33. 6. One end of the power cord B35 is connected to the inner end of the plug 4. The annular groove 28 near the inner end of the plug 4 is stuck in the semicircular groove 31 of the semicircular tube 33. The other end of the power cord A34 is connected to the inner end of the other plug 4. The annular groove 28 near the inner end of the other plug 4 is stuck in the other semicircular groove 31 of the semicircular tube 33. An annular wire groove 29 for bundling the power cord A34 and the power cord B35 is provided near the inner end of the two plugs 4. A reducing head 27 is provided from the middle to the outer end of the two plugs 4. The indicator light 3 in the middle of the power cord A34 is passed through the lamp socket 26 set on the semicircular buckle cover 25; the semicircular buckle cover 25 is buckled on the semicircular tube 33, and two screws are respectively passed through the inner protruding tube 32 of the semicircular tube 33 and connected to the two inner protruding screw holes 23 of the semicircular buckle cover 25; a pit 30 and a protruding block 21 are respectively provided on the opposite surfaces of the semicircular tube 33 and the semicircular buckle cover 25. After the semicircular tube 33 and the semicircular buckle cover 25 are buckled together, the protruding block 21 of the semicircular buckle cover 25 is inserted into the pit 30 of the semicircular tube 33.

[0018] Implement the switch cabinet cable contact overheating detector of the present invention, in combination with the attached Figures 1 to 5 , the tensioning band 1 is made of inelastic soft plastic with a heat resistance temperature of 105 degrees; the internal fixing block 13 is made of nylon material, and the numbers and corresponding positions are marked on the internal fixing block 13 and the wire plate 10 respectively; for the installation of the present invention, first, the multi-channel wires A15 and wires B16 of the internal fixing block 13 are led out of the cabinet body through the gaps or punching holes in the switch cabinet 37 cabinet body, and then the wire plate 10 connecting the multi-channel wires A15 and wires B16 is fixed to the outside of the cabinet body, and then the internal fixing block 13 is fixed at the appropriate positions of the cabinet body at the busbar connection node 38, the upper contact 39 of the trolley, the lower contact 40 of the trolley and the lower part of the cable connector 41 of the switch cabinet 37, and one end of the tensioning band 1 is fixed and tied to the busbar connection node 38, the upper contact 39 of the trolley, the lower contact 40 of the trolley and the cable connector 41 that are prone to overheating, check whether the equipment is normal, and close the cabinet door of the switch cabinet 37 cabinet body after confirming that it is normal.

[0019] When the present invention is used, the plug 4 of the measuring instrument 2 is inserted into the socket 11 of the wire board 10 during routine maintenance and inspection, so that the plug 4 contacts the copper ring 12. If any of the busbar connection node 38, the trolley upper contact 39, the trolley lower contact 40 and the cable connector 41 does not overheat, the indicator light 3 will not light up. If any of the busbar connection node 38, the trolley upper contact 39, the trolley lower contact 40 and the cable connector 41 overheats and causes the tensioning belt 1 to melt, the spring 14 will push the circular plate 5 and the wire lock 6 to sink. At this time, the connecting wire lock 6 of the wire A15 contacts the copper sheet 9 connected to the wire B16, so that the two plugs 4 are connected to the wire A15 and the wire B16 respectively. At this time, the power line A34 and the power line B35 of the measuring instrument 2 are also connected at the same time, and the button battery 24 makes the indicator light 3 light up, so that it can be confirmed that the contacts marked with numbers and corresponding positions on the wire board 10 have overheated. Then the daily maintenance and inspection personnel can hand it over to the power inspection and 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 cable contact overheat detector, comprising an internal fixing block (13), a spring (14), a tensioning belt (1), a conductor, a copper sheet (9), a wire plate (10) and a measuring device (2), characterized in that: The inner fixing block (13) is fixed on the lower cabinet body of the contact in the switch cabinet, and the upper parts of at least two expanded holes (17) provided at the lower part of the inner fixing block (13) are respectively provided with springs (14). The upper part of the tensioning belt (1) passes through the fine hole (7) at the upper part of the inner fixing block (13) and the upper end is connected to the contact of the switch cabinet. The circular plate (5) at the lower end of the tensioning belt (1) is pressed against the lower end of the spring (14). The bottom surface of the circular plate (5) is fixedly connected to one end of the wire B (16). The copper sheet (9) is fixed to the lower part of the expanded hole (17). The copper sheet (9) is fixedly connected to one end of the wire A (15). The wire A (15) and the wire B (16) The other ends of the two terminals are connected to the copper rings (12) in at least two jacks (11) spaced apart on the wiring board (10) provided outside the switch cabinet; one end of the handheld measuring device (2) is provided with two plugs (4), one of the two plugs (4) is connected to one end of the power line B (35), the other end of the power line B (35) is connected to the negative pole of the button battery (24), the positive pole of the button battery (24) is connected to one end of the power line A (34), the indicator light (3) provided in the middle of the power line A (34) is exposed outside the measuring device (2), and the other end of the power line A (34) is connected to the other of the two plugs (4).

2. The switch cabinet cable contact overheat detector according to claim 1, characterized in that: The number of the expanded hole (17) provided at the lower portion of the internal fixing block (13) includes one, two or three; and the number of the jack (11) and the copper ring (12) provided on the wire plate (10) includes two, four or six.

3. The switch cabinet cable contact overheat detector according to claim 1 or 2, characterized in that: A flat hole (18) is provided at the lower part of the expanded hole (17) of the inner fixing block (13) and passes through the front and back. The copper sheet (9) is inserted into the flat hole (18). A connecting hole is provided on the flat hole (18). One end of the wire A (15) is passed through the connecting hole of the copper sheet (9) and is tightened to form a fixed connection after being bent back. An inner wide hole (8) with a small outside and a large inside is provided at intervals on the upper part of the flat hole (18). One end of the wire B (16) passes through the inner wide hole (8) and is fixedly connected to the lower surface of the circular plate (5) through the wire buckle (6).

4. The switch cabinet cable contact overheat detector according to claim 3, characterized in that: A plurality of insertion holes (19) are provided on the lower surface of the circular plate (5), and a plurality of inserting plates (20) are provided on the upper portion of the four sides of the wire buckle (6). The multiple inserting plates (20) around the wire buckle (6) are respectively inserted into the multiple insertion holes (19) of the circular plate (5) and are fixedly connected by inward bending. One end of the wire B (16) is fixedly connected to the connection hole of the wire buckle (6).

5. The switch cabinet cable contact overheat detector according to claim 1, characterized in that: The measuring device (2) comprises a semicircular tube (33), a semicircular buckle cover (25), a plug (4), a power cord B (35), a button battery (24), a power cord A (34), an indicator light (3) and a screw; a semicircular plate is provided at one end of the semicircular tube (33), two semicircular grooves (31) are provided on the semicircular plate at intervals, a semicircular closing block is provided at the other end of the semicircular tube (33), a semicircular clamping groove (22) is provided on the semicircular closing block, and two inner protruding tubes (32) are provided at intervals in the middle of the semicircular tube (33); a semicircular plate is provided at one end of the semicircular buckle cover (25), two semicircular grooves (31) are provided on the semicircular plate at intervals, a semicircular plate closing block is provided at the other end of the semicircular buckle cover (25), a semicircular clamping groove (22) is provided on the semicircular plate closing block, and two inner protruding screw holes (23) are provided at intervals in the middle of the semicircular buckle cover (25); the semicircular tube (33) is placed in the semicircular The positive and negative electrodes of the button battery (24) in the clamping groove (22) are connected to the other end of the power cord B (35) and one end of the power cord A (34) respectively. One end of the power cord B (35) is connected to the inner end of the plug (4). The annular groove (28) near the inner end of the plug (4) is stuck in the semicircular groove (31) of the semicircular tube (33). The other end of the power cord A (34) is connected to the inner end of the other plug (4). The annular groove (28) near the inner end of the other plug (4) is stuck in the other semicircular groove (31) of the semicircular tube (33). The indicator light (3) in the middle of the power cord A (34) is inserted into the lamp socket (26) provided on the semicircular buckle cover (25); the semicircular buckle cover (25) is buckled on the semicircular tube (33) and connected to the two inner protruding screw holes (23) of the semicircular buckle cover (25) after two screws pass through the inner protruding tube (32) of the semicircular tube (33).

6. The switch cabinet cable contact overheat detector according to claim 1, characterized in that: The opposite surfaces of both ends of the semicircular tube (33) and the semicircular buckle cover (25) are respectively provided with a pit (30) and a convex block (21). After the semicircular tube (33) and the semicircular buckle cover (25) are buckled together, the convex block (21) of the semicircular buckle cover (25) is inserted into the pit (30) of the semicircular tube (33).

7. The switch cabinet cable contact overheat detector according to claim 5, characterized in that: Annular wire grooves (29) are respectively provided near the inner ends of the two plugs (4).

8. The switch cabinet cable contact overheat detector according to claim 5, characterized in that: A reducing head (27) is provided between the middle and outer ends of the two plugs (4).

9. The switch cabinet cable contact overheat detector according to claim 5, characterized in that: A wire groove (36) for placing a power line B (35) is provided around the semicircular clamping groove (22) of the semicircular closing block of the semicircular tube (33).

Images