CN214755469U

CN214755469U - Built-in intelligent conductor temperature measurement cable intermediate head

Info

Publication number: CN214755469U
Application number: CN202120749980.0U
Authority: CN
Inventors: 庄猛; 王勇; 侯广义; 刘奇; 侯晓鹏; 牟迪
Original assignee: Jiaobang Electric Technology Jiangsu Co ltd; Nanjing Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Jiaobang Electric Technology Jiangsu Co ltd; Nanjing Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-16
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a built-in intelligent conductor temperature measurement cable intermediate head, concretely relates to cable joint technical field, including casing and cable, the cable sets up in the casing both sides, the inside chamber of placing of having seted up of casing, it is equipped with the intermediate head inner electrode to place the fixed intermediate head inner electrode that is equipped with in intracavity portion, the inside conductor connecting pipe that is provided with of intermediate head inner electrode, conductor connecting pipe both sides are all fixed and are equipped with the cable conductor, conductor connecting pipe one side is equipped with detection device, detection device sets up in one of them cable conductor outside. The utility model discloses a chamber and intercommunication groove of placing offered makes the cable under the prerequisite that does not influence product safety and performance, has realized providing the space and the signal transmission clearance that temperature sensor placed to through temperature sensor, can reflect the test point temperature, when the operating temperature of cable surpassed and predetermine when reporting an emergency and asking for help or increased vigilance the temperature value, the system was reported an emergency and asked for help or increased vigilance automatically, avoided because the temperature risees and arouse equipment trouble.

Description

Built-in intelligent conductor temperature measurement cable intermediate head

Technical Field

The utility model belongs to the technical field of the cable joint technique and specifically relates to a built-in intelligent conductor temperature measurement cable intermediate head that says so.

Background

The production and life of the modern society cannot leave the demand for electricity, the safe operation of a power grid is very important, and various hidden dangers can be found in time by monitoring the operation temperature of power equipment facilities so as to ensure the safety. The medium-low voltage cable head is one of the parts with the highest failure rate of a power system, is huge in quantity, complicated in type and different in quality, and along with the popularization of overhead lines and poles in the ground in urban construction, the quantity of the cable head is infinitely increased along with the popularization and application of cables, and accordingly, more frequent power accidents are possible. At present, most of cable intermediate connectors run underground, and the situations of long-term flooding in an underground or cable trench are very common, and the conditions of various unknown factors such as external force damage and the like cause water inlet damage, breakdown or explosion of various cable heads to frequently occur. And various equipment management monitoring systems used by the power system have very limited data collection on underground cables, can not accurately and timely respond to the line problem, and can not play an effective early warning function. The current in the cable loop is transmitted mainly through the conductors, which are the source of heat generation. The cable has an insulating layer, the higher the voltage, the thicker the insulating layer, when the voltage exceeds 3kV, the semi-conducting layer is designed inside and outside the insulating layer for electric field homogenization. With the rise of voltage, the range of power supply will be expanded, and the importance of the line will be gradually increased, so that how to directly measure the operating temperature of the conductor is very critical and important for the operation department.

At present, a cable head temperature measurement product can only measure the temperature of the outer surface and is interfered by various factors, fuzzy data can only be sensed, the internal temperature is reversely deduced through theoretical calculation, and the cable head temperature measurement product has the following two defects: 1. the external environment and the product structure are different, so that the practical application 2 is difficult, the time delay exists, and a quite long process is needed for conducting from the heat generation to the outside. The insulating layer, the shielding layer and the outer protective layer of the cable joint thoroughly obstruct a method for directly measuring the temperature of the conductor wire core, and effective data cannot be measured from the outside. Therefore, how to directly measure the operating temperature of a conductor is critical and important for the electric power operation department!

The cable joint has the advantages that the cable joint is difficult to be applied widely in the market, a built-in conductor temperature measurement type cable joint product is not available in the market at present, and the difficulties of the matched installation of a core temperature acquisition device, the information transmission and the external data transmission are difficult. At present, various schemes such as 4G, 5G, NB-IoT and the like provided by a wireless public network operator are mostly adopted for data transmission, although the transmitted data volume is small, the product cannot be used in an area which cannot be covered by the wireless public network, the application is greatly limited, and the new energy power station network in the underground or far away of a city cannot be used in the same way.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a built-in intelligence conductor temperature measurement cable intermediate head, through the chamber of placing and the intercommunication groove of seting up, make the cable under the prerequisite that does not influence product safety and performance, the space and the signal transmission clearance that can provide temperature sensor and place have been realized, and through temperature sensor, can reflect the test point temperature, when the operating temperature of cable surpassed and predetermine when warning the temperature value, the system is automatic to report an emergency and ask for help or increased vigilance, avoid arousing equipment trouble because the temperature risees, with the problem of solving appearance among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a built-in intelligent conductor temperature measurement cable intermediate joint comprises a shell and a cable, wherein the cable is arranged on two sides of the shell, a placing cavity is formed in the shell, an intermediate joint inner electrode is fixedly arranged in the placing cavity, a conductor connecting pipe is arranged in the intermediate joint inner electrode, cable conductors are fixedly arranged on two sides of the conductor connecting pipe, a detection device is arranged on one side of the conductor connecting pipe and is arranged outside one of the cable conductors, a cable main insulation layer is arranged on one side of the cable conductor away from the conductor connecting pipe, one end of the cable main insulation layer close to the conductor connecting pipe is fixedly connected with the cable conductor, communicating grooves are formed in two sides of the shell, a cable outer semi-conductive shielding layer is arranged in each communicating groove, one end of the cable main insulation layer away from the conductor connecting pipe penetrates through the intermediate joint inner electrode and extends into the communicating grooves, the connecting structure is arranged in one end, away from the conductor connecting pipe, of the cable main insulation.

In a preferred embodiment, the housing comprises an intermediate joint insulation layer and an intermediate joint outer shield layer, which is arranged outside the intermediate joint insulation layer.

In a preferred embodiment, the detection device comprises a temperature sensor, the temperature sensor is arranged inside the inner electrode of the intermediate joint, and the temperature sensor is fixedly sleeved outside one of the cable conductors.

In a preferred embodiment, the connection structure includes a semi-conductive shielding layer outside the cable, the semi-conductive shielding layer outside the cable is disposed inside the communication groove, the semi-conductive shielding layer outside the cable is fixedly connected with the main insulation of the cable, one end of the semi-conductive shielding layer outside the cable, which is far away from the main insulation of the cable, penetrates through the communication groove and extends to the outside of the communication groove, a cable copper shield is fixedly disposed at one end of the semi-conductive shielding layer outside the cable, which is far away from the housing, an electric field stress controller is fixedly disposed inside the communication groove, and the electric field stress controller is sleeved at one end of the semi-conductive shielding layer outside the cable, which is in contact with the main insulation of the cable.

In a preferred embodiment, a cable outer sheath is fixedly arranged on one side of the cable copper shield far away from the cable outer semiconductive shielding layer, and the cable is fixedly connected with one side of the cable outer sheath far away from the cable copper shield.

In a preferred embodiment, both the communication grooves communicate with the placement chamber.

In a preferred embodiment, the housing is a high dielectric constant stress tube.

The utility model discloses a technological effect and advantage:

the utility model discloses a chamber and intercommunication groove of placing offered makes the cable under the prerequisite that does not influence product safety and performance, has realized providing the space and the signal transmission clearance that temperature sensor placed to through temperature sensor, can reflect the test point temperature, when the operating temperature of cable surpassed and predetermine when reporting an emergency and asking for help or increased vigilance the temperature value, the system was reported an emergency and asked for help or increased vigilance automatically, avoided because the temperature risees and arouse equipment trouble.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

Fig. 3 is a front view of the intermediate joint inner electrode of the present invention.

Fig. 4 is a side sectional view of the overall structure of the present invention.

Fig. 5 is a sectional view of the housing of the present invention.

The reference signs are: 1. a housing; 2. a cable; 3. a placement chamber; 4. an intermediate joint inner electrode; 5. a conductor connecting pipe; 6. a cable conductor; 7. main insulation of the cable; 8. a communicating groove; 9. a semi-conductive shielding layer outside the cable; 10. an intermediate joint insulating layer; 11. an intermediate joint outer shielding layer; 12. a temperature measuring sensor; 13. an electric field stress control body; 14. shielding the cable with copper; 15. and a cable outer sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-5 of the specification, the built-in intelligent conductor temperature measurement cable intermediate joint of the embodiment comprises a shell 1 and cables 2, wherein the cables 2 are arranged on two sides of the shell 1, a placing cavity 3 is formed in the shell 1, the arrangement of the placing cavity 3 and a communicating groove 8 is formed, so that the cables 2 can provide a space for placing a temperature measurement sensor 12 and a signal transmission gap on the premise of not influencing the safety and performance of a product, an intermediate joint inner electrode 4 is fixedly arranged in the placing cavity 3, a conductor connecting pipe 5 is arranged in the intermediate joint inner electrode 4, cable conductors 6 are fixedly arranged on two sides of the conductor connecting pipe 5, a detection device is arranged on one side of the conductor connecting pipe 5, the detection device is arranged outside one of the cable conductors 6, and a cable main insulation 7 is arranged on one side of the cable conductor 6, which is far away from the conductor connecting pipe 5, the utility model discloses a cable conductor, including casing 1, main insulation for cable 7, middle joint inner electrode 4 and the intercommunication inslot 8, the main insulation for cable 7 is close to the one end and the cable conductor 6 fixed connection of conductor connecting pipe 5, intercommunication groove 8 has all been seted up to 1 both sides of casing, intercommunication groove 8 inside is equipped with the outer semiconductive shielding layer 9 of cable, the one end that conductor connecting pipe 5 was kept away from to main insulation for cable 7 runs through the middle joint inner electrode 4 and extends to inside the intercommunication groove 8, the inside connection structure that is equipped with of intercommunication groove 8, connection structure sets up in the one end that conductor connecting pipe 5 was kept away from to main insulation for cable 7.

Further, casing 1 includes intermediate junction insulating layer 10 and intermediate junction outer shielding layer 11, intermediate junction outer shielding layer 11 sets up in intermediate junction insulating layer 10 outside, resumes the outer shielding structure of cable.

Further, connection structure includes semi-conductive shielding layer 9 outside the cable, semi-conductive shielding layer 9 sets up inside intercommunication groove 8 outside the cable, semi-conductive shielding layer 9 and cable main insulation 7 fixed connection outside the cable, the one end that cable main insulation 7 was kept away from to semi-conductive shielding layer 9 outside the cable runs through intercommunication groove 8 and extends to intercommunication groove 8 outside, the fixed cable 2 copper shield that is equipped with of one end that casing 1 was kept away from to semi-conductive shielding layer 9 outside the cable, the inside fixed electric field stress control body 13 that is equipped with of intercommunication groove 8, the one end that semi-conductive level shielding layer 9 and cable main insulation 7 contacted outside the cable is located to electric field stress control body 13 cover, carries out connection control to semi-conductive level shielding layer and cable main insulation 7 outside cable 2, overall structure convenient to use, easy operation.

Furthermore, a cable 2 outer sheath is fixedly arranged on one side of the cable copper shield 14, which is far away from the cable outer semiconductive shielding layer 9, and the cable 2 and one side of the cable outer sheath 15, which is far away from the cable copper shield 14, are fixedly connected, so that the protection of the cable 2 is enhanced, and the protection performance of the cable 2 is improved.

Further, two intercommunication grooves 8 all are linked together with placing chamber 3, are convenient for to the connection and the installation of equipment.

Furthermore, the shell 1 adopts a high dielectric constant stress tube, and double stress compensation can be realized through the arrangement of the high dielectric constant stress tube, so that ultrahigh electrical performance is achieved.

The implementation scenario is specifically as follows: when using, the utility model discloses can be real-time effectual direct monitoring cable 2 connect the position temperature variation condition, the temperature sensor 12 of 1 inside of casing reflects test point real-time temperature on cable conductor 6 surfaces truthfully, and does not all have any influence to cable 2 joint electrical property, waterproof performance in the operation. In combination with a background temperature monitoring system, when the operating temperature of the cable 2 exceeds a preset alarm temperature value, the system automatically alarms, an operating department timely takes appropriate measures to timely search and eliminate equipment faults and ensure the safe and reliable operation of a power grid, and the arrangement of the placing cavity 3 and the communicating groove 8 is arranged, so that the cable 2 can provide a placing space and a signal transmission gap for the temperature measuring sensor 12 on the premise of not influencing the safety and the performance of a product.

Referring to the attached fig. 2 and 4 in the specification, the detection device of the built-in intelligent conductor temperature measurement cable intermediate joint of the embodiment includes a temperature measurement sensor 12, the temperature measurement sensor 12 can detect and collect the internal temperature, the temperature measurement sensor 12 is arranged inside the inner electrode 4 of the intermediate joint, and the temperature measurement sensor 12 is fixedly sleeved outside one of the cable conductors 6.

The implementation scenario is specifically as follows: the wireless passive sensor is combined with research and development and application, and the defects that the existing similar products are unstable in signal transmission and adopt the original electric field distribution due to the fact that the sensors are placed are overcome. Through temperature sensor 12, after the signal acquisition to the temperature was accomplished, collect the signal and pass to next set of intermediate head inner electrode 4 through the Lora agreement, transmit according to this, transmission system no longer only relies on the network signal that current wireless operator provided to transmit for the application scene promotes by a wide margin.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a built-in intelligent conductor temperature measurement cable intermediate head, includes casing (1) and cable (2), place in casing (1) both sides cable (2), its characterized in that: casing (1) inside has been seted up and has been placed chamber (3), it is equipped with intermediate head inner electrode (4) to place chamber (3) inside fixed, intermediate head inner electrode (4) inside is provided with conductor connecting pipe (5), conductor connecting pipe (5) both sides are all fixed and are equipped with cable conductor (6), conductor connecting pipe (5) one side is equipped with detection device, detection device sets up in one of them cable conductor (6) outside, one side that conductor connecting pipe (5) were kept away from in cable conductor (6) is equipped with cable main insulation (7), cable main insulation (7) are close to the one end and cable conductor (6) fixed connection of conductor connecting pipe (5), intercommunication groove (8) have all been seted up to casing (1) both sides, inside is equipped with outer semi-conductive shielding layer (9) of cable in intercommunication groove (8), the one end that conductor connecting pipe (5) were kept away from in cable main insulation (7) runs through intermediate head inner electrode (4) and extends and extend And the connecting structure is arranged at one end of the main cable insulation (7) far away from the conductor connecting pipe (5).

2. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 1, characterized in that: the shell (1) comprises an intermediate joint insulating layer (10) and an intermediate joint outer shielding layer (11), wherein the intermediate joint outer shielding layer (11) is arranged outside the intermediate joint insulating layer (10).

3. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 1, characterized in that: the detection device comprises a temperature sensor (12), wherein the temperature sensor (12) is arranged inside the intermediate joint inner electrode (4), and the temperature sensor (12) is fixedly sleeved outside one of the cable conductors (6).

4. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 1, characterized in that: connection structure includes outer semiconduction shielding layer (9) of cable, outer semiconduction shielding layer (9) of cable set up inside intercommunication groove (8), outer semiconduction shielding layer (9) of cable and cable main insulation (7) fixed connection, the one end that cable main insulation (7) were kept away from to outer semiconduction shielding layer (9) of cable runs through intercommunication groove (8) and extends to intercommunication groove (8) outside, the fixed cable copper shield (14) that are equipped with of one end that casing (1) was kept away from in outer semiconduction shielding layer (9) of cable, intercommunication groove (8) inside fixed electric field stress control body (13) that is equipped with, the electric field stress control body (13) cover is located the one end that outer semiconduction shielding layer (9) of cable and cable main insulation (7) contacted.

5. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 4, characterized in that: and a cable outer sheath (15) is fixedly arranged on one side of the cable copper shield (14) far away from the cable outer semi-conductive shielding layer (9), and the cable (2) is fixedly connected with one side of the cable outer sheath (15) far away from the cable copper shield (14).

6. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 1, characterized in that: the two communicating grooves (8) are communicated with the placing cavity (3).

7. The built-in intelligent conductor temperature measuring cable intermediate joint according to claim 1, characterized in that: the shell (1) adopts a high dielectric constant stress tube.