Electric wire and cable terminal stud overheating monitoring device

Abstract

The utility model discloses an electric wire and cable terminal stud overheating monitoring device, which belongs to the technical field of electric wires and cables and comprises a cable, the cable penetrates through a through hole formed in the side wall of a box body, the box body is divided into an upper part and a lower part which are connected through a hinge on the rear wall, and an overheating monitoring module and a fire extinguishing module are arranged in the box body. The overheating monitoring module is fixedly connected with the inner wall of the bottom of the box body, and the fire extinguishing module is fixedly connected with the inner wall of the top of the box body. By adopting the overheat monitoring device for the wire and cable terminal stud, the adverse effect of the environment on the terminal stud can be reduced, the temperature of the wire and cable terminal stud can be monitored in real time, the heat dissipation effect is good, and fire disasters caused by local overheat can be extinguished in time.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to an overheat monitoring device for electric wire and cable connection terminals. Background Art

[0002] Wire connection is a basic process in electrical work and also a very important process. The quality of wire connection is directly related to whether the entire line can operate safely and reliably for a long time. In the prior art, the methods of connecting wires and cables include twisted connection, compression connection, welding, etc. The directly connected joints lack proper insulating material wrapping, such as heat shrink tubing or insulating tape, which makes the joints prone to moisture or dust accumulation, all of which may increase additional resistance and cause overheating. In addition, during the long-term high-intensity transmission of electricity by wires and cables, vibration, temperature changes, direct sunlight or corrosion may gradually affect the quality of the connection, resulting in increased contact resistance, thereby causing overheating at the joints. Utility Model Content

[0003] The utility model aims to provide an overheat monitoring device for wire and cable terminal ends, which can reduce the adverse effects of the environment on the terminal ends, can monitor the temperature of the wire and cable joints in real time, has good heat dissipation effect, and can promptly extinguish fires caused by local overheating.

[0004] To achieve the above-mentioned purpose, the utility model provides an overheating monitoring device for the connection terminal of a wire and cable, including a cable, the cable passing through a through hole opened in the side wall of a box, the box being divided into an upper and lower part and connected by a hinge at the rear wall, an overheating monitoring module and a fire extinguishing module being arranged in the box, the overheating monitoring module being fixedly connected to the bottom inner wall of the box, and the fire extinguishing module being fixedly connected to the top inner wall of the box.

[0005] Preferably, the cable comprises an electric wire, the outer wall of the electric wire is covered with an insulating layer, the outer wall of the insulating layer is provided with a heat conducting layer, and the outer wall of the heat conducting layer is provided with a heat dissipating layer.

[0006] Preferably, a sawtooth groove is formed around the outer wall of the heat dissipation layer, and the inner wall of the heat dissipation layer is fixedly connected to the outer wall of the heat conductive layer.

[0007] Preferably, the overheat monitoring module comprises a cable temperature sensor and an air temperature sensor, the number of the cable temperature sensor is one, and the number of the air temperature sensors is two.

[0008] Preferably, the cable temperature sensor is electrically connected to a temperature sensing probe rod, the temperature sensing probe rod is in close contact with the surface of the cable, and the cable temperature sensor and the temperature sensing probe rod are an integrated structure.

[0009] Preferably, the fire extinguishing module comprises a dry powder bag and a telescopic mechanism, and the dry powder bag is fixedly connected to the inner wall of the top of the box body.

[0010] Preferably, the telescopic mechanism includes an electric rod, which is symmetrically arranged, one end of the electric rod is fixedly connected to the inner wall of the top of the box body, and the other end of the electric rod is fixedly connected to a connecting rod, the connecting rod is provided with spikes, and the connecting rod and the spikes are an integral structure.

[0011] Preferably, the air temperature sensors are distributed diagonally on the inner wall of the bottom of the box, and the air temperature sensors are electrically connected to the electric pole.

[0012] Preferably, a plurality of heat dissipation holes are provided on the side wall of the box body.

[0013] Preferably, a sealing ring is provided on the through hole, and the sealing ring is two upper and lower detachable semicircles, and the cable is connected to the through hole through the sealing ring.

[0014] Therefore, the utility model adopts the above-mentioned wire and cable terminal overheating monitoring device, which can reduce the adverse effects of the environment on the terminal, can monitor the temperature of the wire and cable joints in real time, has good heat dissipation effect, and can promptly extinguish fires caused by local overheating.

[0015] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of an embodiment of an overheat monitoring device for wire and cable terminal of the utility model;

[0017] Figure 2 It is a cross-sectional view of an embodiment of an overheat monitoring device for wire and cable terminal ends of the utility model;

[0018] Figure 3 The utility model is a cross-sectional view of a cable of an embodiment of an overheat monitoring device for a wire and cable connection terminal.

[0019] Reference numerals

[0020] 1. Cable; 2. Insulation layer; 3. Thermal conductive layer; 4. Heat dissipation layer; 5. Box; 6. Dry powder bag; 7. Electric pole; 8. Connecting rod; 9. Spike; 10. Cable temperature sensor; 11. Air temperature sensor; 12. Sealing ring; 13. Heat dissipation hole; 14. Temperature sensing probe. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Embodiment 1

[0024] like Figures 1 to 3 As shown, the utility model provides an overheat monitoring device for the terminal of a wire and cable, including a cable 1. The cable 1 passes through a through hole opened in the side wall of a box body 5, which can ensure that the cable 1 enters or leaves the box body 5 in an orderly and stable manner. The box body 5 is divided into an upper and lower part and is connected by a hinge at the rear wall, and can be opened at any time to facilitate the replacement or maintenance of the cable 1. A sealing ring 12 is provided on the through hole, and the sealing ring 12 is two detachable semicircles in an upper and lower part. The detachable design makes it easier to adjust and fix the sealing ring 12 when installing or replacing the cable 1. The cable 1 is connected to the through hole through the sealing ring 12. For cables 1 of different diameters, the sealing ring 12 of the appropriate size can be selected to adapt. In addition, the sealing ring 12 has a shock-absorbing and buffering function, which effectively reduces the wear of the wire and cable 1 and the box body 5 to prevent leakage.

[0025] The cable 1 includes an electric wire, the outer wall of which is covered with an insulating layer 2. The insulating layer 2 can prevent electric shock and short circuit accidents and ensure the safety of electricity use. A thermal conductive layer 3 is provided on the outer wall of the insulating layer 2. The thermal conductive layer 3 can quickly transfer heat from the inside of the electric wire and cable 1 to the heat dissipation layer 4. The inner wall of the heat dissipation layer 4 is fixedly connected to the outer wall of the thermal conductive layer 3. The outer wall of the heat dissipation layer 4 is surrounded by a serrated groove. The serrated groove increases the outer surface area of ​​the heat dissipation layer 4, which helps to increase the area of ​​air contact with it, thereby accelerating the dissipation of heat through convection and radiation.

[0026] An overheat monitoring module and a fire extinguishing module are provided in the box body 5. The overheat monitoring module is fixedly connected to the bottom inner wall of the box body 5, and can monitor the temperature of the air inside the box body 5 and the joint of the wire and cable 1 in real time, and issue an alarm in time; the fire extinguishing module is fixedly connected to the top inner wall of the box body 5, and can extinguish the fire in time when a fire occurs.

[0027] The overheat monitoring module includes a cable temperature sensor 10 and an air temperature sensor 11. The number of the cable temperature sensor 10 is one, and the number of the air temperature sensor 11 is two. The cable temperature sensor 10 can monitor the temperature of the cable 1 terminal in real time, and the air temperature sensor 11 can monitor the temperature of the air inside the box 5 in real time.

[0028] The cable temperature sensor 10 is electrically connected to the temperature sensing probe 14. The temperature sensing probe 14 is in close contact with the surface of the cable 1 and can instantly sense the temperature changes of the cable 1 during operation and transmit its signal to the cable temperature sensor 10. The cable temperature sensor 10 and the temperature sensing probe 14 are an integrated structure. The integrated design reduces failure points, facilitates maintenance and replacement, and enhances the stability and reliability of the system.

[0029] The air temperature sensors 11 are distributed diagonally on the inner wall at the bottom of the box 5, which can more evenly cover the internal space of the box 5. Compared with a single straight line arrangement, the temperature changes in various areas of the box can be captured more accurately. The air temperature sensor 11 is electrically connected to the electric rod 7. A preset value is set on the air temperature sensor 11. When the air temperature reaches the preset value, the air temperature sensor 11 transmits a signal to the electric rod 7 to trigger the fire extinguishing module.

[0030] The fire extinguishing module includes a dry powder bag 6 and a telescopic mechanism. The dry powder bag 6 is fixedly connected to the inner wall of the top of the box body 5. The dry powder bag 6 is a composite film material with good sealing performance. It can keep the dry powder dry and active. The outer layer is relatively wear-resistant to resist daily wear and tear, and the inner layer is easy to break, which can ensure that it can break quickly and completely when impacted by sharp objects.

[0031] The telescopic mechanism includes an electric rod 7, which is symmetrically arranged and can be telescopic. One end of the electric rod 7 is fixedly connected to the inner wall of the top of the box body 5 to increase stability; the other end of the electric rod 7 is fixedly connected to the connecting rod 8, which can drive the connecting rod 8 to move upward after receiving the signal from the air temperature sensor 11. A spike 9 is provided on the connecting rod 8, and the connecting rod 8 and the spike 9 are an integrated structure. The spike 9 ensures that the dry powder bag 6 can be pierced and the dry powder therein can be released after touching the dry powder bag 6 and applying a certain upward force.

[0032] The side wall of the box body 5 is provided with a plurality of heat dissipation holes 13, which can timely conduct the heat emitted from the connection terminals of the wires and cables 1 to the environment outside the box body 5, so that the air temperature in the box body 5 does not reach the set value of the air temperature sensor 11 and trigger the fire extinguishing device.

[0033] Working principle: one or more wires are covered with an insulating layer 2, a heat conducting layer 3 and a heat dissipating layer 4 in sequence, which can transfer the heat inside the terminal of the wire and cable 1 to the box 5, and then transfer it to the environment outside the box 5 through the heat dissipating holes 13 on the side wall of the box 5. The cable temperature sensor 10 can monitor the temperature at the terminal in real time, and the air temperature sensor 11 can monitor the temperature of the air inside the box 5 in real time.

[0034] When the temperature of the air inside the box 5 reaches the preset value of the air temperature sensor 11, the wire and cable 1 has a fire hazard. At this time, the staff should receive the temperature information and come as soon as possible. If they fail to arrive in time, the air temperature sensor 11 will transmit the signal to the electric rod 7, and the electric rod 7 will drive the connecting rod 8 to move upward until the spike 9 on the connecting rod 8 contacts the dry powder bag 6, and continue to apply upward force to the dry powder bag 6, puncturing the dry powder bag 6, releasing the dry powder, and extinguishing the fire. The staff can open the box 5 and inspect the wire and cable 1 or replace the dry powder bag 6.

[0035] Therefore, the utility model adopts the above-mentioned wire and cable terminal overheating monitoring device, which can reduce the adverse effects of the environment on the terminal, can monitor the temperature of the wire and cable joints in real time, has good heat dissipation effect, and can promptly extinguish fires caused by local overheating.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A device for monitoring overheating of a wire and cable terminal, characterized in that: The invention comprises a cable (1), wherein the cable (1) passes through a through hole provided in a side wall of a box (5), wherein the box (5) is divided into an upper and a lower part and connected at a rear wall by a hinge, wherein an overheat monitoring module and a fire extinguishing module are provided in the box (5), wherein the overheat monitoring module is fixedly connected to the bottom inner wall of the box (5), and the fire extinguishing module is fixedly connected to the top inner wall of the box (5); The fire extinguishing module comprises a dry powder bag (6) and a telescopic mechanism, wherein the dry powder bag (6) is fixedly connected to the inner wall at the top of the box body (5); the telescopic mechanism comprises an electric rod (7), wherein the electric rod (7) is symmetrically arranged, wherein one end of the electric rod (7) is fixedly connected to the inner wall at the top of the box body (5), and the other end of the electric rod (7) is fixedly connected to a connecting rod (8), wherein a spike (9) is provided on the connecting rod (8), and the connecting rod (8) and the spike (9) are an integral structure; The overheat monitoring module comprises a cable temperature sensor (10) and an air temperature sensor (11); the cable temperature sensor (10) is electrically connected to a temperature sensing probe rod (14); the temperature sensing probe rod (14) is closely attached to the surface of the cable (1); and the air temperature sensor (11) is electrically connected to the electric rod (7).

2. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: The cable (1) comprises an electric wire, the outer wall of the electric wire is covered with an insulating layer (2), a heat conducting layer (3) is provided on the outer wall of the insulating layer (2), and a heat dissipation layer (4) is provided on the outer wall of the heat conducting layer (3).

3. The overheat monitoring device for wire and cable terminal according to claim 2, characterized in that: The outer wall of the heat dissipation layer (4) is provided with a sawtooth-shaped groove around it, and the inner wall of the heat dissipation layer (4) is fixedly connected to the outer wall of the heat conducting layer (3).

4. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: The number of the cable temperature sensor (10) is one, and the number of the air temperature sensors (11) is two.

5. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: The cable temperature sensor (10) and the temperature sensing probe rod (14) are an integrated structure.

6. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: The air temperature sensors (11) are distributed diagonally on the inner wall of the bottom of the box (5).

7. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: A plurality of heat dissipation holes (13) are provided on the side wall of the box body (5).

8. The overheat monitoring device for wire and cable terminal according to claim 1, characterized in that: A sealing ring (12) is provided on the through hole, the sealing ring (12) being two upper and lower detachable semicircles, and the cable (1) is connected to the through hole via the sealing ring (12).

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