Cable joint temperature monitoring device

Abstract

The utility model discloses a cable joint temperature monitoring device which comprises a joint, conductive pins are fixedly arranged on one side of the surface of the joint, a connecting cable is fixedly arranged on one side of the joint, a connecting assembly is fixedly arranged at one end of the connecting cable, and a monitoring mechanism used for monitoring the temperature of the joint is arranged in the joint. The monitoring mechanism comprises a functional bin, a conductive block, an alarm, a bimetallic strip and a first wire, the functional bin is fixedly arranged on one side of the surface of the connector, the interior of the functional bin is hollow, the conductive block is fixedly arranged on the surface of the conductive pin on the left side in the functional bin, and the alarm is fixedly arranged in the connector. And a bimetallic strip is fixedly arranged at the lower end of the alarm. According to the utility model, no power supply needs to be prepared, the power supply of the connector is used for supplying power after the connector is inserted, and the installation position is closer to the insertion position of the connector, so that the temperature can be quickly sensed when the poor-contact connector is heated, and the monitoring effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature monitoring, in particular to a cable joint temperature monitoring device. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. They are widely used products that play a role in electromagnetic energy conversion. Fire accidents account for the majority of power cable accidents, and most of the causes of power cable fire accidents are due to poor cable joints, which increase contact resistance, and then increase joint temperature, which in turn leads to worse joint contact. If they are not monitored, a vicious cycle will occur, eventually leading to cable fires and huge economic losses.

[0003] In order to promptly detect temperature anomalies in the cable joint, a temperature monitoring mechanism can be set at the position of the cable joint as needed; and such temperature monitoring mechanism in the prior art, such as a cable joint temperature monitoring device disclosed in Chinese patent application number 202320308152.2, only clamps a monitoring device on the outside of the cable when in use; thus, the monitoring mechanism needs to be powered, and since it is set on the outside of the entire insulation layer, the temperature monitoring effect is also limited; therefore, a cable joint temperature monitoring device needs to be improved to address this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a cable joint temperature monitoring device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a cable joint temperature monitoring device, comprising a joint, a conductive pin is fixedly provided on one side of the joint surface, a connecting cable is fixedly provided on one side of the joint, a connecting component is fixedly provided on one end of the connecting cable, a monitoring mechanism for monitoring the joint temperature is provided inside the joint, the monitoring mechanism comprises a functional compartment, a conductive block, an alarm, a bimetallic strip, and a first wire, a functional compartment is fixedly provided on one side of the joint surface, the interior of the functional compartment is hollow, a conductive block is fixedly provided on the left side surface of the conductive pin inside the functional compartment, an alarm is fixedly provided inside the joint, a bimetallic strip is fixedly provided at the lower end of the alarm, and a first wire is fixedly provided on the right side surface of the conductive pin.

[0006] Preferably, the bimetallic strip bends toward the conductive block when heated; that is, the thermal expansion coefficient of the side of the bimetallic strip away from the conductive block should be greater than the thermal expansion coefficient of the side close to the conductive block; in this way, the bimetallic strip will bend toward the conductive block when heated, and the bimetallic strip is a mature existing technology and can be produced using copper, aluminum or other materials.

[0007] Preferably, the first wire on the right side is electrically connected to the alarm, and the alarm is electrically connected to the bimetallic strip. The right-side conductive pin, the first wire, the alarm, the bimetallic strip, the conductive block, and the left-side conductive pin of the device can form a circuit. When the two conductive pins are inserted into the socket and contact the neutral wire and the live wire, a circuit with a power supply can be formed. When the device is used, if the temperature at the joint exceeds the threshold, the bimetallic strip is heated and bends toward the conductive block, and finally can contact the conductive block. At this time, the above circuit can form a loop, so that the alarm is powered on. In this way, the alarm can be powered on to alarm (this alarm can be a sound alarm, or it can generate a wireless communication signal for remote alarm. Both types of alarms are mature existing technologies, so this application document will no longer introduce the specific structure of the alarm).

[0008] Preferably, a second wire is fixedly provided on one side of the surface of the conductive pin, and the conductive pin is electrically connected to the connecting cable through the second wire; the connecting cable and the conductive pin can be electrically connected together through the second wire; in this way, when the conductive pin of the device is inserted into the socket, two parallel circuits will be formed, one is a circuit composed of the right conductive pin, the first wire, the alarm, the bimetallic strip, the conductive block, and the left conductive pin; the other is a circuit composed of the right conductive pin, the second wire, the connecting cable, the connecting component, and the left conductive pin, and the two circuits are connected in parallel with each other.

[0009] Preferably, the outer surface of the connector is provided with anti-skid protrusions; the connector can be easily plugged in and out through the anti-skid protrusions; although a monitoring mechanism is provided inside the connector of the device, the entire method of use is the same as that of the connector in the traditional technology; it can be plugged in and out normally.

[0010] Preferably, the functional compartment and the joint are both made of insulating materials, which can improve the safety of the device.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The temperature at the joint of the utility model exceeds the threshold value; the bimetallic strip is bent toward the conductive block due to the heat; and finally can contact the conductive block, at which time the alarm is energized; in this way, the alarm can be energized to sound; in this way, the device does not need to prepare a power supply, and can be powered by the power supply that comes with the joint after insertion. At the same time, the installation position is closer to the insertion position of the joint. When the joint with poor contact heats up, the temperature can be quickly felt, and the monitoring effect is better.

[0013] When the utility model is used, the overall appearance and structure are the same as those of the traditional plug; and the entire method of use is the same as that of the connector in the traditional technology; it can be plugged and unplugged normally, and is easy to use, so the device can be easily promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a cable joint temperature monitoring device of the utility model;

[0015] Figure 2 This is a cross-sectional view of a cable joint temperature monitoring device of the utility model;

[0016] Figure 3 The utility model is a cable joint temperature monitoring device Figure 2 A front view of

[0017] Figure 4 This is a circuit principle diagram of a cable joint temperature monitoring device of the utility model;

[0018] Figure 5 The utility model is a cable joint temperature monitoring device Figure 2 Magnified view at A in the middle.

[0019] In the figure: 1. connector; 2. conductive pin; 3. connecting cable; 4. connecting component; 5. functional compartment; 6. conductive block; 7. alarm; 8. bimetallic strip; 9. first wire; 10. second wire; 11. anti-slip protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides a technical solution: a temperature monitoring device for a cable joint 1, comprising a joint 1, a conductive pin 2 is fixedly arranged on one side of the surface of the joint 1, a connecting cable 3 is fixedly arranged on one side of the joint 1, a connecting component 4 is fixedly arranged on one end of the connecting cable 3, a monitoring mechanism for monitoring the temperature of the joint 1 is arranged inside the joint 1, the monitoring mechanism comprises a functional compartment 5, a conductive block 6, an alarm 7, a bimetallic strip 8, and a first wire 9, a functional compartment 5 is fixedly arranged on one side of the surface of the joint 1, the interior of the functional compartment 5 is hollow, a conductive block 6 is fixedly arranged on the surface of the conductive pin 2 on the left side inside the functional compartment 5, an alarm 7 is fixedly arranged inside the joint 1, a bimetallic strip 8 is fixedly arranged on the lower end of the alarm 7, and a first wire 9 is fixedly arranged on the surface of the conductive pin 2 on the right side.

[0022] The bimetallic strip 8 is bent toward the conductive block 6 when heated; that is, the thermal expansion coefficient of the side of the bimetallic strip 8 away from the conductive block 6 should be greater than the thermal expansion coefficient of the side close to the conductive block 6; in this way, the bimetallic strip 8 will bend toward the conductive block 6 when heated, and the bimetallic strip 8 is a mature existing technology, and can be made of copper, aluminum or other materials.

[0023] The first wire 9 on the right is electrically connected to the alarm 7, and the alarm 7 is electrically connected to the bimetallic strip 8; the right conductive pin 2 of the device, the first wire 9, the alarm 7, the bimetallic strip 8, the conductive block 6, and the left conductive pin 2 can form a circuit; when the two conductive pins 2 are inserted into the socket and contact the neutral wire and the live wire, a circuit with a power supply can be formed. When the device is used, if the temperature at the joint 1 exceeds the threshold, the bimetallic strip 8 is heated and bent toward the conductive block 6, and finally can contact the conductive block 6. At this time, the above circuit can form a loop, so that the alarm 7 is powered on; in this way, the alarm 7 can be powered on to alarm (this alarm 7 can be a sound alarm, or it can generate a wireless communication signal for remote alarm. Both types of alarms 7 are mature existing technologies, so this application document will not introduce the specific mechanism of the alarm 7 in detail);

[0024] A second wire 10 is fixedly arranged on one side of the surface of the conductive pin 2, and the conductive pin 2 is electrically connected to the connecting cable 3 through the second wire 10; the connecting cable 3 and the conductive pin 2 can be electrically connected together through the second wire 10; in this way, when the conductive pin 2 of the device is inserted into the socket, two parallel circuits will be formed, one of which is the right conductive pin 2, the first wire 9, the alarm 7, the bimetallic strip 8, the conductive block 6, and the left conductive pin 2 forming a circuit; and the other is the right conductive pin 2, the second wire 10, the connecting cable 3, the connecting component 4, and the left conductive pin 2 forming a circuit, and the two circuits are connected in parallel with each other;

[0025] The outer surface of the connector 1 is provided with an anti-skid protrusion 11; the connector 1 can be easily plugged and unplugged through the anti-skid protrusion 11; although a monitoring mechanism is provided inside the connector 1 of the present device, the entire method of use is the same as that of the connector 1 in the conventional technology; plugging and unplugging can be performed normally;

[0026] The functional compartment 5 and the joint 1 are both made of insulating materials, which can improve the safety of the device.

[0027] Working principle: When using this device, the entire use process is consistent with the traditional connector 1, which is directly inserted into the socket strip so that the conductive pin 2 can contact the live wire and the neutral wire. At this time, the temperature has not reached the threshold; the bimetallic strip 8 is separated from the conductive block 6; but the connecting cable 3 and the connecting component 4 can be powered normally;

[0028] As the device is used, the temperature at the joint 1 exceeds the threshold value; the bimetallic strip 8 is heated and bends toward the conductive block 6; and finally can contact the conductive block 6, at which time the alarm 7 is powered on; in this way, the alarm 7 can be powered on and alarm can be sounded; in this way, the device does not need to prepare a power supply, and the power supply provided by the joint 1 after insertion is used for power supply. At the same time, the installation position is closer to the insertion position of the joint 1. When the temperature at the joint 1 rises due to poor contact, the temperature can be quickly sensed, and the monitoring effect is better;

[0029] When the device is used, the overall appearance and structure are the same as those of a traditional plug; and the entire method of use is the same as that of the connector 1 in the traditional technology; it can be plugged and unplugged normally, and is easy to use, so that the device can be easily promoted and used.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable joint temperature monitoring device, comprising a joint (1), characterized in that: A conductive pin (2) is fixedly arranged on one side of the surface of the connector (1), a connecting cable (3) is fixedly arranged on one side of the connector (1), a connecting assembly (4) is fixedly arranged on one end of the connecting cable (3), a monitoring mechanism for monitoring the temperature of the connector (1) is arranged inside the connector (1), the monitoring mechanism comprises a functional compartment (5), a conductive block (6), an alarm (7), a bimetallic strip (8), and a first conductive wire (9), a functional compartment (5) is fixedly arranged on one side of the surface of the connector (1), the interior of the functional compartment (5) is hollow, a conductive block (6) is fixedly arranged on the surface of the conductive pin (2) on the left side inside the functional compartment (5), an alarm (7) is fixedly arranged inside the connector (1), a bimetallic strip (8) is fixedly arranged at the lower end of the alarm (7), and a first conductive wire (9) is fixedly arranged on the surface of the conductive pin (2) on the right side.

2. A cable joint temperature monitoring device according to claim 1, characterized in that: The bimetallic strip (8) bends towards the conductive block (6) when heated.

3. A cable joint temperature monitoring device according to claim 1, characterized in that: The first wire (9) on the right side is electrically connected to the alarm (7), and the alarm (7) is electrically connected to the bimetallic strip (8).

4. A cable joint temperature monitoring device according to claim 1, characterized in that: A second wire (10) is fixedly arranged on one side of the surface of the conductive pin (2), and the conductive pin (2) is electrically connected to the connecting cable (3) via the second wire (10).

5. A cable joint temperature monitoring device according to claim 1, characterized in that: The outer surface of the joint (1) is provided with an anti-slip protrusion (11).

6. A cable joint temperature monitoring device according to claim 1, characterized in that: The functional compartment (5) and the joint (1) are both made of insulating materials.

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