DE202022106118U1 - Temperature measuring device for each layer of a power cable interconnection - Google Patents

Abstract

Temperature measuring device for each layer of a power cable interconnection, comprising a cable interconnection (1), characterized in that both ends of the cable interconnection (1) are provided with a cable connection head (4), the cable interconnection (1) comprising a copper jacket (11), the inner side of the copper jacket (11) is provided with a copper shielding layer (12), the inside of the copper shielding layer (12) being provided with silicone rubber (13), the inside of the silicone rubber (13) being provided with a semiconductive sleeve (14), the The inside of the semiconductive sleeve (14) is provided with a wrapped semiconductive tape (15), the inside of the wrapped semiconductive tape (15) being provided with a copper tube (16), the inside of the copper tube (16) being provided with a copper cable core (17 ) is provided, wherein the outer layer of the copper sheath (11), the silicone rubber (13), the semiconductive n Sleeve (14) and the copper tube (16) are provided with four temperature sensors (2).

Description

area of utility model

The present utility model relates to the technical field of cable temperature measuring devices, in particular to a temperature measuring device for each layer of a power cable interconnection.

State of the art

Real-time monitoring of the temperature at the cable connection can effectively reduce the occurrence of cable connection errors. The commonly used thermistor point temperature measurement, fiber wire temperature measurement and non-contact infrared temperature measurement, in general, can only detect the temperature of the outer surface of the cable joint or cable, which does not reflect the true temperature of the cable conductor, and is vulnerable to the temperature of the environment. In order to reduce the influence of the external environment, it is necessary to analyze and process the measured surface temperature. The basis for calculating the temperature of the cable conductor by the surface temperature of the cable joint is to obtain the material temperature field data of each layer of the cable joint during service. The temperature field data model of each layer of the cable is created based on the temperature field data of each layer in different operating conditions. During the actual engineering measurement, the temperature of the cable conductor can be quickly derived and calculated from the surface temperature of the cable joint to assess the working condition and risk of the cable.

In order to obtain the material temperature data of each layer of the cable joint during operation and to create the temperature field data model of each layer of the cable, the material temperature of each layer of the cable joint must first be accurately measured and obtained. However, the existing measurement method is only for the surface of the cable and cannot accurately measure the material temperature of each layer inside the cable.

abandonment of the utility model

The purpose of the present utility model is to provide a temperature measuring device for each layer of a power cable interconnection to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides a temperature measuring device for each layer of a power cable interconnection, comprising a cable interconnection, both ends of the cable interconnection being provided with a cable connection head, the cable interconnection comprising a copper jacket, the inside of the copper jacket having a copper shielding layer the inside of the copper shielding layer is lined with silicone rubber, the inside of the silicone rubber is lined with a semiconductive sleeve, the inside of the semiconductive sleeve is lined with a wrapped semiconductive tape, the inside of the wrapped semiconductive tape is lined with a copper tube is, the inside of the copper tube is provided with a copper cable core, the outer layer of the copper sheath, the silicone rubber, the semiconductive sleeve and the copper tube m are provided with four temperature sensors.

Preferably, it is provided that a polyurethane sealant is filled between the inner wall of the copper jacket and the outer wall of the copper shielding layer, with four temperature sensors also installed on the outer layer of the polyurethane sealant.

Provision is preferably made for the temperature sensors to be distributed at equal angles in a ring.

It is preferably provided that the device also comprises a collector module, a temperature field test system, a data storage system, a temperature display module and an energy management module.

It is preferably provided that the output end of the temperature sensor is connected to a data line, the data line being a CAN bus, the temperature sensor comprising a thermistor, the temperature sensor comprising a CAN bus control module and to the collector via the CAN bus communicates.

It is preferable that the collector module has an STM32L431 single-chip microcomputer with ultra-low power consumption and has a built-in CAN bus controller and includes NB-IOT communication baseband, the single-chip microcomputer collects temperature data, which are collected from all temperature sensors via the CAN bus.

• In der Temperaturmessvorrichtung für jede Schicht einer Stromkabelzwischenverbindung kann gleichzeitig die Materialtemperatur jeder Schicht der Kabelzwischenverbindung gemessen werden, was die Grundlage für die Erstellung eines Datenmodells des Temperaturfeldes jeder Schicht des Kabels bildet. Durch das Verfahren eines speziellen Kabels zur Temperaturmessung jeder Schicht der Kabelzwischenverbindung kann eine 10-kV-Stromsimulationstestvorrichtung zum Simulieren der Kabelheizung verschiedener Ströme angeschlossen werden.

It is preferably provided that the energy management module is a polymer lithium Battery with a capacity of 3000 mAh. Compared to the prior art, the beneficial effects of the present utility model are:

• In the temperature measuring device for each layer of a power cable interconnection, the material temperature of each layer of the cable interconnection can be measured simultaneously, which forms the basis for creating a data model of the temperature field of each layer of the cable. By using a special cable to measure the temperature of each layer of the cable interconnection, a 10kV current simulation test device can be connected to simulate the cable heating of various currents.

The present utility model discloses in particular a temperature measuring device for each layer of a power cable interconnection comprising a cable interconnection, both ends of the cable interconnection being provided with a cable connection head, the cable interconnection comprising a copper jacket, the inside of the copper jacket being provided with a copper shielding layer, the inside of the Copper shielding layer is provided with silicone rubber, the inside of the silicone rubber is provided with a semiconductive sleeve, the inside of the semiconductive sleeve is provided with a wrapped semiconductive tape, the inside of the wrapped semiconductive tape is provided with a copper tube, the inside of the copper tube is provided with a copper cable core, with the outer layer of copper sheath, silicone rubber, semiconductive sleeve and copper tube with four temperature sensors n are provided. In the temperature measuring device for each layer of a power cable interconnection, the material temperature of each layer of the cable interconnection can be measured simultaneously, which forms the basis for creating a data model of the temperature field of each layer of the cable. By using a special cable to measure the temperature of each layer of the cable interconnection, a 10kV current simulation test device can be connected to simulate the cable heating of various currents.

character list

• 1 Fig. 12 is a schematic diagram of the overall structure according to the present utility model;
• 2 Fig. 12 is a schematic diagram of the internal structure of a cable interconnection according to the present utility model;
• 3 12 is a schematic diagram of the working principle according to the present utility model.

Description of the preferred embodiments

The technical solution in the embodiment of the present utility model is clearly and fully described below in combination with the drawings in the embodiment of the present utility model. Obviously, the described embodiments are only some embodiments and not all embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained without creative work by a person of ordinary skill in the art fall within the scope of the present utility model.

In the description of the present utility model, it is to be understood that the terms middle, longitudinal, transverse, length, width, thickness, top, bottom, front, back, left, right, vertical, horizontal, top, bottom, inside, outside , clockwise, counterclockwise, etc. are based on the azimuth or positional relationships shown in the drawings. Only to facilitate the description of the present utility model and to simplify the description, rather than to state or imply that the device or component referred to must have, be constructed and operated in a particular orientation, may therefore not to be understood as a limitation of the present utility model.

Furthermore, the terms First, Second, and Third are used for descriptive purposes only and should not be taken to indicate or imply relative importance, or to imply the number of technical features stated. Thus, features restricted to First, Second, and Third may explicitly or implicitly include one or more of those features. In the description of the present utility model, plural means two or more unless expressly defined otherwise.

Example 1

The present utility model provides a temperature measuring device for each layer of a power cable interconnection, comprising a cable interconnection 1, wherein both Ends of the cable interconnection 1 are provided with a cable connection head 4, whereby a 10 kV current simulation test device for simulating cable heating of various currents can be connected, the cable interconnection 1 comprising a copper jacket 11, the inside of the copper jacket 11 being provided with a copper shielding layer 12, the inside of the copper shielding layer 12 is provided with silicone rubber 13, the inside of the silicone rubber 13 is provided with a semiconductive sleeve 14, the inside of the semiconductive sleeve 14 is provided with a wrapped semiconductive tape 15, the inner side of the wrapped semiconductive tape 15 is provided with a copper tube 16, the inside of the copper tube 16 is provided with a copper cable core 17, the outer layer of the copper sheath 11, the silicone rubber 13, the semiconductive sleeve 14 and the copper tube 16 with four temperature sensors 2 are provided, as in 1 - 3 shown.

According to the present embodiment, a polyurethane sealant 111 is provided to be filled between the inner wall of the copper jacket 11 and the outer wall of the copper shielding layer 12, and four temperature sensors 2 are also installed on the outer layer of the polyurethane sealant 111.

In particular, it is provided that the temperature sensors 2 are distributed at equal angles in a ring, as a result of which the purpose of a uniform and precise temperature measurement is achieved.

Example 2

Based on the embodiment 1, the device is intended to also include a collector module, a temperature field test system, a data storage system, a temperature display module, and a power management module to further cooperate with the use of the temperature sensor 2.

It is further provided that the output end of the temperature sensor 2 is connected to a data line 3, the data line 3 being a CAN bus, the temperature sensor 2 having a thermistor which has an NTC thermistor effect, so that the resistance with increasing Temperature decreases, the temperature sensor 2 contains a CAN bus control module and communicates with the collector through the CAN bus, which has the characteristics of strong anti-interference ability and convenient wiring.

It is further designed that the collector module adopts an STM32L431 single-chip microcomputer with an ultra-low power consumption and has a built-in CAN bus controller and includes a NB-IOT communication baseband, the collector module uses a timing detection method and itself is in a sleep state most of the time, so that the temperature sensor 2 is powered by a timing control power switch, which also achieves the purpose of low-power consumption operation, the single-chip microcomputer collects temperature data collected from all the temperature sensors 2 can be collected through the CAN bus, so that the single-chip microcomputer communicates with the NB-IOT communication baseband through the serial port, through the NB-IOT wireless communication mode is sent to the temperature field test system, and the temperature field test system the temperature data of each temperature sensor 2 recorded and displayed. This principle of operation is an existing product technology that will not be repeated here.

It is further envisaged that the power management module will have a polymer lithium battery with a capacity of 3000 mAh, so that a voltage of 3.3 V will be generated by the linear buck module to power each hardware module.

When using a temperature measuring device for each layer of a power cable interconnection according to the present utility model, the cable interconnection 1 is first installed in the temperature field test system, the temperature sensor 2 communicates with the collector via the CAN bus, the collector module uses a timing detection method and most of the time is in a sleep state so that the temperature sensor 2 is powered by a timing control power switch, which also achieves the purpose of low-power operation, the single-chip microcomputer collects temperature data sent from all the temperature sensors 2 through the CAN -Bus are collected, so that the single-chip microcomputer communicates with the NB-IOT communication baseband through the serial port, through the NB-IOT wireless communication mode is sent to the temperature field test system, and the temperature field test system the temperature data each s temperature sensor 2 records and displays so that the power management module generates a voltage of 3.3V through the linear buck module to power each hardware module.

The basic principle, main features and advantages of the present utility model are shown and described above. Those skilled in the art should understand that the present Utility model is not limited by the above embodiments. The above embodiments and description are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements. These changes and improvements fall within the claimed scope of the present utility model. The claimed scope of protection of the present utility model is defined by the appended claims and their equivalents.

reference list

1

cable interconnection;

11

copper jacket;

111

polyurethane sealant;

12

copper shielding layer;

13

silicone rubber;

14

semiconductive sleeve;

15

wrapped semiconductive tape;

16

copper pipe;

17

copper cable core;

2

temperature sensor;

3

data line;

4

cable termination head.

Claims (7)

Temperature measuring device for each layer of a power cable interconnection, comprising a cable interconnection (1), characterized in that both ends of the cable interconnection (1) are provided with a cable connection head (4), the cable interconnection (1) comprising a copper jacket (11), the inner side of the copper jacket (11) is provided with a copper shielding layer (12), the inside of the copper shielding layer (12) being provided with silicone rubber (13), the inside of the silicone rubber (13) being provided with a semiconductive sleeve (14), the The inside of the semiconductive sleeve (14) is provided with a wrapped semiconductive tape (15), the inside of the wrapped semiconductive tape (15) being provided with a copper tube (16), the inside of the copper tube (16) being provided with a copper cable core (17 ) is provided, wherein the outer layer of the copper sheath (11), the silicone rubber (13), the semiconductive en sleeve (14) and the copper tube (16) are provided with four temperature sensors (2). Temperature measuring device for each layer of a power cable interconnection claim 1 , characterized in that a polyurethane sealant (111) is filled between the inner wall of the copper jacket (11) and the outer wall of the copper shielding layer (12), four temperature sensors (2) are also installed on the outer layer of the polyurethane sealant (111). Temperature measuring device for each layer of a power cable interconnection claim 1 , characterized in that the temperature sensors (2) are distributed equiangularly in a ring. Temperature measuring device for each layer of a power cable interconnection claim 1 , characterized in that the device also comprises a collector module, a temperature field test system, a data storage system, a temperature display module and a power management module. Temperature measuring device for each layer of a power cable interconnection claim 4 , characterized in that the output end of the temperature sensor (2) is connected to a data line (3), the data line (3) being a CAN bus, the temperature sensor (2) having a thermistor, the temperature sensor (2) having a Contains CAN bus control module and communicates with the collector via the CAN bus. Temperature measuring device for each layer of a power cable interconnection claim 4 , characterized in that the collector module has a single-chip microcomputer of STM32L431 with an extremely low power consumption and has a built-in CAN bus controller and contains a NB-IOT communication baseband, the single-chip microcomputer collects temperature data, collected by all temperature sensors (2) via the CAN bus. Temperature measuring device for each layer of a power cable interconnection claim 4 , characterized in that the energy management module has a polymer lithium battery with a capacity of 3000 mAh.

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