Special sensor for cable overheating detection

Abstract

A special sensor for cable overheating detection relates to a cable overheating detection device, and is characterized in that two vertical plates are arranged at intervals at the upper parts of report rings respectively arranged at the easy-to-overheat parts of a cable, a hot melt adhesive block is arranged in an opening between the two vertical plates, and a lifting rod at the upper part of the hot melt adhesive block penetrates through a through hole of a clamping plate; the upper end and the lower end of a spring sleeved on the lifting rod are respectively propped against the lower part of the clamping plate and the connecting plate above the hot melt adhesive block; the power line A is fixedly connected with the lower copper ring through a plurality of power branch lines A respectively; the power line B is connected with the upper copper ring through a plurality of power supply branching lines B. The power line A and the power line B are connected with the signal transmitter. When the cable core is overheated and is conducted to the outer skin of the cable, the hot melting rubber block senses and generates hot melting, the spring drives the lifting rod to descend after the hot melting rubber block is subjected to hot melting, at the moment, the upper copper ring and the lower copper ring are in contact, and meanwhile the signal transmitter is powered on; the monitoring host receives the power-on signal of the signal transmitter and then enables an operator to check and eliminate hidden dangers in time.

Description

Technical Field

[0001] The present invention relates to a cable overheat detection device, in particular to a special sensor for cable overheat detection. Background Art

[0002] If the cable is not properly connected, it will cause the cable to overheat. Good, or the cable is close to other heat sources, which affects normal heat dissipation. The cable conductor resistance does not meet the requirements, and the cable will generate heat during operation. Because the resistance does not meet the requirements, it will generate heat when current passes through. The joint manufacturing technology is not good, and the crimping at the joint is not tight, resulting in excessive contact resistance, causing the cable to heat up. The armored cable sheath is damaged, and water enters the sheath after being damaged, the insulation performance is destroyed, and the insulation resistance gradually decreases, causing the cable to heat up during operation. For the cable overheating problem, if the cause is not found and the fault is eliminated in time, the cable will continue to be powered on and run continuously, which will cause insulation thermal breakdown after overheating, thereby causing the cable to short-circuit and trip between phases, which may cause severe fires. Summary of the invention

[0003] The purpose of the present invention is to disclose a special sensor for cable overheat detection based on the existing deficiencies. The sensor utilizes the low-temperature melting characteristics of the hot-melt adhesive block. When the cable core is overheated, the spring pushes the connecting plate to separate the upper copper ring and the lower copper ring. After the single-chip microcomputer obtains the power-on information, it quickly notifies the monitoring host, thereby buying time to solve the difficult-to-find cable overheating caused faults.

[0004] In order to achieve the purpose of the invention, the present application discloses the following technical solutions: A special sensor for cable overheat detection, wherein alarm rings are respectively arranged at the parts of the cable that are prone to overheat, two vertical plates are arranged at intervals on the upper part of the alarm ring, a clamping plate is arranged between the upper ends of the two vertical plates, a hot melt adhesive block is arranged in the opening between the two vertical plates, a lifting rod on the upper part of the hot melt adhesive block is passed through the through hole in the middle part of the clamping plate, the upper and lower ends of the spring sleeved on the outer edge of the lifting rod are respectively pressed against the connecting plates at the lower part of the clamping plate and the upper part of the hot melt adhesive block, a lower copper ring is arranged on the upper part of the clamping plate, and the upper copper ring is fixedly connected to the upper part of the lifting rod; a power line A is fixedly connected to the lower copper ring through a plurality of power branch wires A; a power line B is connected to the upper copper ring through a plurality of power branch wires B, and the power line A and the power line B are connected to a signal transmitter.

[0005] The special sensor for cable overheat detection has two ends formed by the lower disconnection position of the alarm ring, and the screws are respectively passed through the through holes of the connecting plates at the two ends of the alarm ring and are locked by nuts.

[0006] The special sensor for cable overheat detection is provided with a bayonet in the middle of the two vertical plates of the reporting ring. The snap-in plate is an inverted U-shaped structure. The inner sides of the two vertical plates of the snap-in plate with the inverted U-shaped structure are respectively provided with protruding blocks. The two vertical plates of the snap-in plate are respectively located on the outer sides of the two vertical plates of the reporting ring, and the bayonet of the two vertical plates of the reporting ring is engaged by the protruding blocks on the inner sides of the two vertical plates of the snap-in plate.

[0007] The special sensor for cable overheat detection has a lifting rod and a connecting plate as an integrated structure, and the lower surface of the connecting plate is connected to the hot melt adhesive block by adhesive.

[0008] The special sensor for cable overheat detection is provided with a raised ring at the upper opening of the through hole in the middle of the upper surface of the clamping plate, and the lower copper ring is connected to the outside of the raised ring and the upper surface of the clamping plate by gluing, wherein the height of the raised ring is slightly lower than that of the lower copper ring.

[0009] The dedicated sensor for cable overheat detection, the signal transmitter has a built-in battery, a power-on information collection module, a power-on information acquisition module and a signal transmission module, and the signal transmission module transmits the information to the remote terminal.

[0010] The battery of the special sensor for cable overheat detection is an AA battery.

[0011] The special sensor for cable overheat detection, the remote terminal is a monitoring host, the monitoring host is a computer terminal with a display, and the computer terminal has a built-in remote communication module.

[0012] The dedicated sensor for cable overheat detection, after the monitoring host performs signal correlation processing, notifies the mobile phone of specific power-on time information and location information via SMS.

[0013] The special sensor for cable overheat detection, the hot melt adhesive block is a hot melt adhesive for furniture edge sealing with a melting point between 70-84 degrees.

[0014] Through the above disclosure, the beneficial effects of the present invention are: The special sensor for cable overheat detection described in the present invention senses and melts the overheated cable core after the overheat is transmitted to the outer sheath of the cable. After the hot-melt adhesive block is melted, the spring drives the lifting rod to descend. At this time, the upper copper ring connected to the power tapping line A contacts the lower copper ring connected to the power tapping line B and the signal transmitter is powered on at the same time. At this time, the monitoring host promptly notifies the operator to check and eliminate hidden dangers after receiving the power-on signal from the signal transmitter. The present invention can detect problems in time before the cable core becomes overheated through the hot-melt adhesive block, thereby providing a guarantee for reducing failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention in use on a cable; Figure 2 It is a schematic diagram of the three-dimensional structure of the ring of the present invention; Figure 3 It is a schematic diagram of the three-dimensional assembly structure of the ring report of the present invention; Figure 4 It is a schematic diagram of the three-dimensional assembly structure of the hot melt adhesive block and the connecting plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention; Figure 6 It is a schematic diagram of the structure of the signal transmitter of the present invention; Figure 7 It is a schematic diagram of the remote terminal structure of the present invention; In the figure: 1. cable; 2. upper copper ring; 3. snap-on plate; 4. spring; 5. alarm ring; 6. power cord A; 7. power cord B; 8. signal transmitter; 9. cable core; 10. power tapping line A; 11. lifting rod; 12. lower copper ring; 13. vertical plate; 14. bayonet; 15. connecting plate; 16. screw; 17. nut; 18. opening; 19. hot melt adhesive block; 20. connecting plate; 21. raised card block; 22. power tapping line B; 23. raised ring; 24. perforation; 25. glue; 26. through hole; 27. single-chip microcomputer; 28. battery; 29. ​​monitoring host; 30. mobile phone. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so as to more clearly understand the purpose, features and advantages of the present invention. 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 only intended to explain that the technical solution of the present invention is not limited to one implementation method.

[0017] Combined with Figures 1 to 7 The special sensor for cable overheat detection described in the specification has alarm rings 5 ​​respectively arranged at the parts of the cable 1 that are prone to overheating, and the two ends formed by the lower disconnected position of the alarm ring 5 are provided with connecting plates 15, and the screws 16 respectively pass through the through holes 24 of the connecting plates 15 at the two ends of the alarm ring 5 and are locked by nuts 17. The clamping plate 3 is an inverted U-shaped structure, and the inner sides of the two vertical plates of the clamping plate 3 of the inverted U-shaped structure are respectively provided with protruding blocks 21, and the two vertical plates of the clamping plate 3 are respectively located on the outer sides of the two vertical plates 13 of the alarm ring 5, and the protruding blocks 21 on the inner sides of the two vertical plates of the clamping plate 3 are clamped with the bayonet 14 of the two vertical plates 13 of the alarm ring 5, and the bayonet 14 is provided in the middle of the two vertical plates 13 of the alarm ring 5, and the clamping plate 3 is arranged between the upper ends of the two vertical plates 13, and a hot melt adhesive block 19 is arranged in the opening 18 between the two vertical plates 13, and the lifting rod 11 and the connecting plate 20 are one. The body structure is as follows: the lower surface of the connecting plate 20 is connected to the hot melt adhesive block 19 by adhesive 25, the upper part of the lifting rod 11 is passed through the through hole 26 in the middle of the clamping plate 3, and the upper and lower ends of the spring 4 sleeved on the outer edge of the lifting rod 11 are respectively pressed on the connecting plate 20 at the lower part of the clamping plate 3 and the upper part of the hot melt adhesive block 19, and a raised ring 23 is arranged at the upper opening of the through hole 26 in the middle of the upper surface of the clamping plate 3, and the lower copper ring 12 is connected to the outside of the raised ring 23 and the upper surface of the clamping plate 3 by adhesive, wherein the height of the raised ring 23 is slightly lower than that of the lower copper ring 12, and the upper copper ring 2 is fixedly connected to the upper part of the lifting rod 11; the power line A6 is fixedly connected to the lower copper ring 12 by multiple power branch lines A10; the power line B7 is connected to the upper copper ring 2 by multiple power branch lines B22, and the power line A6 and the power line B7 are connected to the signal transmitter 8.

[0018] Combined with Figure 1 , 6 Or 7, the signal transmitter 8 has a No. 5 battery 28 and a single-chip microcomputer 27 built in. The single-chip microcomputer 27 is provided with a power-on information collection module, a power-on information acquisition module and a signal transmission module. The signal transmission module of the single-chip microcomputer 27 transmits the information to a remote terminal. The remote terminal is a monitoring host 29 in the 24-hour duty room of the power department. The monitoring host 29 is a computer terminal with a display. The computer terminal has a built-in remote communication module. After the monitoring host 29 performs signal-related processing, it notifies the mobile phone 30 of the specific power-on time information and location information by SMS. As a simplified solution, if the signal transmitter 8 of the present invention is installed in a manned duty room, each hot melt adhesive block 19 of the power line A6 led out from the positive electrode of the battery 28 can be melted and connected to the power line B7, and then the power line B7 is connected to the speaker. At this time, the negative electrode of the battery 28 connected to the speaker makes the speaker work and emits a warning sound to prompt that the cable is overheated at a certain point, and then the on-duty personnel will check and provide information for repair.

[0019] The dedicated sensor for cable overheat detection according to the present invention is implemented in combination with the attached Figures 1 to 7 The hot melt adhesive block 19 of the present invention can use granular low-viscosity hot melt adhesive for furniture edge sealing, preferably with a melting point temperature between 70-84 degrees, and use a mold slightly smaller than the opening 18 of the ring 5 to melt and produce a rectangular block; the clamping plate 3 and the lifting rod 11 and connecting plate 20 of the integrated structure are made of nylon material with a higher melting point temperature; the ring 5 is made of steel material.

[0020] Before using the special sensor for cable overheat detection described in the present invention, the required number of lifting rods 11, springs 4, lower copper rings 12, the clamping plate 3 and the power tapping line A10 are installed, and then the upper copper ring 2 is fixed and the power tapping line B22 is connected. Then, according to the specific situation of the cable 1, the alarm ring 5 is installed on the cable 1 at the connection point between the ends of the two cables 1 that are prone to overheating, the bending point of the cable 1 or other parts that are prone to overheating. The hot melt adhesive block 19 of the clamping plate 3 is used to correspond to the opening 18, and then the power line A6 and the power line B7 led out of the signal transmitter 8 are connected to the power tapping line A10 and the power tapping line B22 respectively. Wiring B22, signal transmitter 8 is placed in a suitable position, and signal transmitter 8 is in a power-off state; when the cable core 9 at a certain installation ring 5 of cable 1 is overheated, the temperature difference between cable core 9 and outer skin is 10 to 30 degrees. When the outer skin temperature of cable 1 reaches 70-84, hot melt adhesive block 19 begins to melt, and the corresponding hot melt adhesive block 19 loses its supporting force. At this time, spring 4 moves downward against connecting plate 20, and upper copper ring 2 also begins to approach lower copper ring 12. When upper copper ring 2 contacts lower copper ring 12, positive line of battery 28 is connected to single-chip microcomputer 27. "Single-chip microcomputer 27 has been connected to negative line of battery 28 before." The power-on information collection module of the single-chip computer 27 starts working, and the power-on information acquisition module connected to the power-on information collection module sends instructions to the signal transmission module, and the signal transmission module transmits the power-on signal to the remote terminal. After receiving the signal, the monitoring host 29 in the duty room sends the specific power-on time information and the location information of the signal transmitter 8 to the personnel responsible for the area according to the signal transmitter 8 code, and the personnel responsible for the area can check and process it.

[0021] The present invention is not suitable for use in cable wells with excessive moisture. If necessary, a moisture-proof cover with a larger upper space can be added to the outside of the clamping plate 3, and a moisture-proof gap should be provided between the lower part of the moisture-proof cover and the upper part of the alarm ring 5.

[0022] The preferred embodiments of the present invention have been described in detail above, but 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 protection of the present invention. These equivalent forms also fall within the scope defined by the claims attached to this application.

[0023] Parts of the present invention not described in detail are prior art.

Claims

1. A special sensor for cable overheat detection, characterized by: A warning ring (5) is provided at a portion of the cable (1) that is prone to overheating. Two vertical plates (13) are provided at intervals on the upper part of the warning ring (5). A clamping plate (3) is provided between the upper ends of the two vertical plates (13). A hot melt adhesive block (19) is provided in an opening (18) between the two vertical plates (13). A lifting rod (11) on the upper part of the hot melt adhesive block (19) passes through a through hole (26) in the middle part of the clamping plate (3). The upper and lower ends of a spring (4) sleeved on the outer edge of the lifting rod (11) are respectively pressed against the clamping plate (3). ) and a connecting plate (20) at the lower part of the hot melt adhesive block (19), a lower copper ring (12) is arranged at the upper part of the clamping plate (3), and the upper copper ring (2) is fixedly connected to the upper part of the lifting rod (11); the power line A (6) is fixedly connected to the lower copper ring (12) through a plurality of power branch lines A (10); the power line B (7) is connected to the upper copper ring (2) through a plurality of power branch lines B (22), and the power line A (6) and the power line B (7) are connected to the signal transmitter (8).

2. The special sensor for cable overheat detection according to claim 1 is characterized in that: The two ends formed at the lower disconnected position of the alarm ring (5) are provided with connecting plates (15), and the screws (16) respectively pass through the through holes (24) of the connecting plates (15) at the two ends of the alarm ring (5) and are locked by nuts (17).

3. The special sensor for cable overheat detection according to claim 1 is characterized in that: A bayonet (14) is provided in the middle of the two upright plates (13) of the reporting ring (5); the clamping plate (3) is in an inverted U-shaped structure; the inner side surfaces of the two upright plates of the clamping plate (3) of the inverted U-shaped structure are respectively provided with protruding clamping blocks (21); the two upright plates of the clamping plate (3) are respectively located outside the two upright plates (13) of the reporting ring (5); and the bayonet (14) of the two upright plates (13) of the reporting ring (5) is clamped by the protruding clamping blocks (21) on the inner side surfaces of the two upright plates of the clamping plate (3).

4. The special sensor for cable overheat detection according to claim 1 is characterized in that: The lifting rod (11) and the connecting plate (20) are an integral structure, and the lower surface of the connecting plate (20) is connected to the hot melt adhesive block (19) via adhesive (25).

5. The special sensor for cable overheat detection according to claim 1 is characterized in that: A raised ring (23) is provided at the upper opening of the through hole (26) in the middle of the upper surface of the clamping plate (3), and the lower copper ring (12) is connected to the outside of the raised ring (23) and the upper surface of the clamping plate (3) by gluing, wherein the height of the raised ring (23) is slightly lower than that of the lower copper ring (12).

6. The special sensor for cable overheat detection according to claim 1 is characterized in that: The signal transmitter (8) has a built-in battery (28), a power-on information collection module, a power-on information acquisition module and a signal transmission module, and the signal transmission module transmits information to a remote terminal.

7. The special sensor for cable overheat detection according to claim 6 is characterized in that: The battery (28) is an AA battery.

8. The special sensor for cable overheat detection according to claim 6 is characterized in that: The remote terminal is a monitoring host (29), which is a computer terminal with a display, and the computer terminal has a built-in remote communication module.

9. The special sensor for cable overheat detection according to claim 8 is characterized in that: The monitoring host (29) notifies the mobile phone (30) of specific power-on time information and location information via SMS after performing signal-related processing.

10. The special sensor for cable overheat detection according to claim 1 is characterized in that: The hot melt adhesive block (19) is a hot melt adhesive for furniture edge sealing with a melting point between 70 and 84 degrees.

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