CN112803326A - Cable junction box - Google Patents
Cable junction box Download PDFInfo
- Publication number
- CN112803326A CN112803326A CN202110093615.3A CN202110093615A CN112803326A CN 112803326 A CN112803326 A CN 112803326A CN 202110093615 A CN202110093615 A CN 202110093615A CN 112803326 A CN112803326 A CN 112803326A
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- Prior art keywords
- temperature
- temperature measurement
- cable
- antenna
- partial discharge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/086—Assembled boxes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/081—Bases, casings or covers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
Abstract
The invention discloses a cable connection box which comprises a box body, a connection assembly and a temperature measurement assembly, wherein a containing cavity is formed in the box body; the connecting assembly is arranged in the accommodating cavity and comprises a separable connector and two cables respectively connected to two ends of the separable connector; the temperature measurement assembly comprises a temperature measurement chip, a temperature measurement antenna and a temperature collector, the temperature measurement chip is arranged in the separable connector, the temperature measurement antenna and the temperature collector are arranged on the inner wall surface of the accommodating cavity, and the temperature measurement antenna can receive a temperature signal of the temperature measurement chip and send the temperature signal to the temperature collector. The cable connecting box provided by the technical scheme of the invention can solve the problems of placement and environmental protection of an online monitoring device.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a cable connection box.
Background
In the current 10kV distribution network system, a cold-contraction or prefabricated intermediate joint is adopted as a common cable intermediate connection mode, but due to the reasons of direct buried arrangement of cables or water soaking of a cable well and the like, the operation environment of the intermediate joint is relatively severe and complex, and more breakdown accidents are caused by the reasons of water inflow of cable cores or external physical damage and the like. Meanwhile, with the gradual advance of intelligent power grid construction, the considerable, controllable operation of the power grid is realized, the state monitoring of all links and components becomes a key point of attention, particularly, the accurate and reliable online monitoring of the components is realized at a key position like an intermediate joint, so that the operation hidden danger of the components can be predicted in advance, and the control accident becomes a key for intelligent construction of a distribution network at the germination stage. However, the existing on-line monitoring scheme for the intermediate joint still faces a lot of difficulties to be solved, for example, the placement positions of the elements for realizing on-line temperature measurement and partial discharge measurement, data acquisition and processing and the like may interfere with the structure of the existing intermediate joint, and the influence on the electrical performance and the overall waterproof performance of the intermediate joint is unknown. For another example, the problem of energy supply (i.e., power supply) of electronic components that realize functions such as online temperature measurement and partial discharge measurement.
Disclosure of Invention
The invention mainly aims to provide a cable connection box, which aims to solve the problem of placement of a detection assembly at a cable connection part and improve safety.
In order to achieve the above object, the present invention provides a cable connection box comprising:
the refrigerator comprises a box body, a door body and a door body, wherein an accommodating cavity is formed in the box body;
the connecting assembly is arranged in the accommodating cavity and comprises a separable connector and two cables respectively connected to two ends of the separable connector; and
the temperature measurement assembly comprises a temperature measurement chip, a temperature measurement antenna and a temperature collector, the temperature measurement chip is arranged in the separable connector, the temperature measurement antenna and the temperature collector are arranged on the inner wall surface of the accommodating cavity, and the temperature measurement antenna can receive a temperature signal of the temperature measurement chip and send the temperature signal to the temperature collector.
In an optional embodiment, the cable connection box further includes a wireless transmission terminal and a wireless transmission antenna, the wireless transmission terminal is disposed on the cavity wall of the accommodating cavity and electrically connected to the temperature collector, the box body is provided with an antenna hole, and the wireless transmission antenna is disposed on a periphery of the antenna hole.
In an optional embodiment, the temperature measuring chip is connected with the temperature measuring antenna through RFID wireless radio frequency communication; and/or the presence of a gas in the gas,
the temperature measurement antenna is electrically connected with the temperature collector through a cable.
In an optional embodiment, the separable connector comprises an insulating shell and a plug, a mounting hole is formed in one end of the insulating shell, the plug is arranged in the mounting hole, and the temperature measuring chip is arranged in the plug.
In an optional embodiment, the temperature measuring chip and the plug are integrally molded by casting; and/or the temperature measuring antenna is arranged close to the plug.
In an optional embodiment, one the cable includes a plurality of sinle silks, coupling assembling includes a plurality of separable connectors, two the sinle silks pass through separable connector corresponds the connection, cable junction box still includes CT and gets the electric installation, CT current transformer and CT that CT got the electric installation and included the electricity and get the special power supply, CT current transformer cover is located at least one the sinle silks, CT gets the special power supply and locates hold the intracavity, and with the temperature collector electricity is connected.
In an optional embodiment, the cable junction box further comprises a partial discharge monitoring assembly, the partial discharge monitoring assembly comprises a partial discharge collecting terminal and a partial discharge monitoring sensor which are electrically connected, the partial discharge monitoring sensor and the partial discharge collecting terminal are arranged in the accommodating cavity at intervals, and the partial discharge collecting terminal is electrically connected with the CT power taking special power supply.
In an alternative embodiment, the partial discharge monitoring sensor comprises at least one of a high frequency current transformer and a transient earth-electric wave signal sensor.
In an optional embodiment, the connecting assembly further includes a sleeve, the sleeve has two connecting ends disposed at an interval and used for electrical connection, and each of the connecting ends is inserted into a corresponding plug hole of one of the separable connectors.
In an optional embodiment, the cable connection box further includes a ground copper bar, and the ground copper bar is electrically connected to the cable and the separable connector through a ground wire respectively; and/or the presence of a gas in the gas,
the box body is made of stainless steel.
According to the technical scheme, the cable connection box is used for cable connection and comprises a box body, a connecting assembly and a temperature measuring assembly, a containing cavity is formed in the box body, the internal connecting assembly and the internal temperature measuring assembly can be protected, the connecting assembly is completely isolated from the external environment, the problems that the connecting assembly is subjected to water inflow or external physical damage and the like are solved, the service performance of the connecting assembly is improved, normal connection among cables is realized, and the electrical and mechanical properties of the connecting assembly are met. Simultaneously, the temperature measurement subassembly includes the temperature measurement chip, temperature measurement antenna and temperature collector, the temperature measurement chip is located in the separable connector, conveniently detect the cable temperature in it, the temperature measurement antenna can receive the temperature signal that the temperature measurement chip detected, and send it to temperature collector, temperature collector carries out analysis processes to temperature signal, can realize carrying out comprehensive online temperature monitoring to cable joint, thereby can be considerable controllable to the operational aspect of coupling assembling department, provide accurate early warning and the location of trouble emergence earlier stage and look for and provide important operational data support for fortune dimension, reduce the emergence of accident. In addition, the box body also provides an installation basis for the temperature measurement assembly, and the connection of the cable is not influenced by the arrangement of the temperature measurement assembly, so that the maintenance efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of one embodiment of the cable connection cabinet of the present invention;
FIG. 2 is a cross-sectional view of the cable connection box of FIG. 1;
FIG. 3 is a schematic view of the construction of the connection assembly in the cable connection cabinet of FIG. 1;
fig. 4 is a cross-sectional view of another embodiment of the cable connection box of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a cable connection box 100 for connecting cables 33.
Referring to fig. 1 and 2, in an embodiment of the present invention, the cable connection box 100 includes a box body 10, a connection assembly 30 and a temperature measurement assembly 50, wherein a receiving cavity 10a is formed in the box body 10;
the connecting assembly 30 is disposed in the accommodating cavity 10a, and the connecting assembly 30 includes a separable connector 31 and two cables 33 respectively connected to two ends of the separable connector 31;
In this embodiment, the shape of box 10 is the cuboid, and the hookup location because of two cables 33 is mostly rectangular form, so, set up box 10 and can hold coupling assembling 30 and partial cable 33 for the cuboid better, also can be convenient for settle simultaneously. Of course, in other embodiments, the shape of the box 10 may be a cylinder or other shapes. In order to facilitate the connection of the cable 33, the box body 10 is arranged to be of a split structure, that is, the box body 10 comprises a cover 11 and a box body 13, the box body 13 and the cover 11 are enclosed to form an accommodating cavity 10a, the cover 11 and the box body 13 are detachably connected, so that the maintenance and the disassembly and assembly are facilitated, and the specific connection mode can be threaded connection, buckling connection and the like. And in order to improve the sealing performance, a sealing ring can be arranged at the joint of the box body 13 and the cover 11 so as to further improve the protection performance.
It is understood that, here, the connecting assembly 30 is used for connecting two cables 33, and includes a separable connector 31 and two cables 33, the separable connector 31 being formed with wire inlets at both sides, thereby achieving electrical connection of the two cables 33. Of course, the connection assembly 30 may also connect a cable 33 to an equipment outlet. The cable 33 may be a single-core cable 33 or a multi-core cable 33, and in the case of the multi-core cable 33, the separable connector 31 is provided in plural, and each core 331 corresponds to one separable connector 31, thereby achieving an improvement in expandability of the connector of the cable 33. Correspondingly, the two side surfaces of the box body 13 need to be provided with wire passing holes so that the two cables 33 can pass through the accommodating cavity 10a, and the specific positions of the wire passing holes can be set according to the structure of the separable connector 31, and are generally arranged on the two opposite side surfaces of the box body 13 or the two adjacent side surfaces of the box body 13, which is not limited herein. Of course, the sealing ring is disposed in the interference fit or clearance fit between the wire passing hole and the cable 33 to ensure the sealing performance of the box 10.
Meanwhile, the cable connection box 100 is also internally provided with a temperature measurement component 50, the temperature measurement component 50 comprises a temperature measurement chip 51, a temperature measurement antenna 53 and a temperature collector 55, and the temperature measurement chip 51 is used for sensing the temperature at the connection part of the cable 33 and sending the temperature detected by the temperature measurement chip in the form of an electric signal, so that the temperature measurement chip is arranged on the separable connector 31 to conveniently measure the temperature and improve the detection accuracy; meanwhile, the connection of the cable 33 is not affected due to the small size of the temperature measuring chip 51. The temperature measurement antenna 53 is disposed on the inner wall of the accommodating cavity 10a to receive the temperature signal sent by the temperature measurement chip 51 and forward the temperature signal to the temperature collector 55, and the temperature collector 55 receives the temperature signal and performs data analysis, processing and storage to obtain the analysis data result when needed, so as to obtain the temperature condition at the connecting component 30, so as to provide support for fault prediction. Of course, the temperature measuring component 50 can be monitored in real time or periodically according to the setting, and the specific transmission process is as follows: the temperature collector 55 sends a temperature measurement command to the temperature measurement antenna 53, the temperature measurement antenna 53 sends radio frequency electric waves to activate the temperature measurement chip 51 and transmit the temperature measurement command to the temperature measurement chip 51 to measure the temperature.
In the technical scheme of the invention, the structure for connecting the cables 33 is the cable connection box 100, the cable connection box 100 comprises a box body 10, a connecting assembly 30 and a temperature measurement assembly 50, a containing cavity 10a is formed in the box body 10, and the connecting assembly 30 and the temperature measurement assembly 50 inside can be protected, so that the connecting assembly 30 is completely isolated from the external environment, the problems of water inflow or external physical damage and the like of the connecting assembly 30 are solved, the service performance of the connecting assembly 30 is improved, the normal connection among the cables 33 is realized, and the electrical and mechanical properties of the cables are met. Meanwhile, the temperature measurement component 50 comprises a temperature measurement chip 51, a temperature measurement antenna 53 and a temperature collector 55, the temperature measurement chip 51 is arranged in the separable connector 31, the temperature of the cable connection part in the temperature measurement chip is convenient to detect, the temperature measurement antenna 53 can receive a temperature signal detected by the temperature measurement chip 51 and send the temperature signal to the temperature collector 55, the temperature collector 55 analyzes and processes the temperature signal, comprehensive online temperature monitoring can be carried out on the cable 33 connection part, the operation condition of the connection component 30 can be observed and controlled, important operation data support is provided for operation and maintenance to provide accurate early warning and positioning search in the early stage of fault occurrence, and accidents are reduced. In addition, the box body 10 also provides an installation basis for the temperature measuring component 50, and the connection of the cable 33 is not influenced by the arrangement of the temperature measuring component 50, so that the maintenance efficiency is improved.
In an alternative embodiment, the box 10 is made of stainless steel. In order to further strengthen the protective performance of the box body 10, the material of the box body 10 arranged at the position is stainless steel, the structural strength is high, the corrosion resistance and the waterproof performance are better, and the effect of better isolating the external environment can be implemented. Specifically, the box body 10 can be made of stainless steel with IP68 waterproof and dustproof grade, so that the box body can protect the internal components in strength and has better functions of explosion prevention, water prevention, fire prevention and the like, and the protection grade is improved.
In an optional embodiment, the cable connection box 100 further includes a wireless transmission terminal 70 and a wireless transmission antenna 71, which are electrically connected, the wireless transmission terminal 70 is disposed on the cavity wall of the accommodating cavity 10a and is electrically connected to the temperature collector 55, the box body 10 is provided with an antenna hole, and the wireless transmission antenna 71 is disposed on a periphery of the antenna hole.
In this embodiment, in order to make things convenient for temperature signal transmission to the outside in the cable junction box 100, still be equipped with wireless transmission terminal 70 in holding chamber 10a, this wireless transmission terminal 70 is the DTU, be connected with temperature collector 55 electricity, specifically be through the cable junction, thereby can receive the temperature signal of temperature collector 55 transmission, and transmit this temperature signal to intelligent high in the clouds backstage through wireless transmission antenna 71, for example, cell-phone, computer etc., the user passes through intelligent electronic equipment like the cell-phone, the cable 33 temperature in the real time monitoring cable junction box 100 such as computer, thereby make things convenient for the user to monitor and protect more. Of course, the DTU may be disposed at the bottom of the box 13 for easy installation, or may be disposed at any convenient location in the box 10. In order to realize the signal transmission of the wireless transmission antenna 71, an antenna hole is required to be formed in the box 10, for example, but not limited to, the antenna hole is formed in the surface of the cover 11, and the wireless transmission antenna 71 is required to be formed on the periphery of the antenna hole, for example, to be inserted into the antenna hole, or to be attached to the inner surface of the cover 11, or to extend out of the box 10 through the antenna hole, which is not limited herein.
In an optional embodiment, the temperature measuring chip 51 is connected with the temperature measuring antenna 53 through RFID wireless radio frequency communication; and/or the presence of a gas in the gas,
the temperature measuring antenna 53 is electrically connected with the temperature collector 55 through a cable.
In this embodiment, since the temperature measurement chip 51 is disposed in the separable connector 31, the temperature measurement chip 51 and the temperature measurement antenna 53 are configured to perform RFID radio frequency communication, so that the transmission speed is high, and the penetrating communication can be realized, thereby ensuring the timely transmission and stability of the temperature signal, and increasing the degree of freedom for setting the position of the temperature measurement antenna 53; and the arrangement of connecting wires can be reduced, so that the influence on the connecting assembly 30 is reduced, and the maintenance and the disassembly are more convenient. Meanwhile, the temperature measurement antenna 53 is electrically connected with the temperature collector 55 through a cable, so that the influence of the external environment is avoided, and the transmission stability can be ensured. In an optional embodiment, the temperature measuring antenna 53 and the temperature collector 55 are both arranged on the cover 11, so that the connection influence on the connection component 30 in the box body 13 is further reduced, and the connection efficiency is improved; and can be close to temperature measurement antenna 53 and temperature collector 55 and set up, so, can reduce the length of connecting wire, avoid producing the interference. Of course, the connection mode of the temperature measuring antenna 53 and the temperature collector 55 is not limited to the above mode, and may be a wireless connection mode.
Referring to fig. 2 and fig. 3, in an alternative embodiment, the separable connector 31 includes an insulating housing 313 and a plug 311, a mounting hole is formed at one end of the insulating housing 313, the plug 311 is disposed in the mounting hole, and the temperature measuring chip 51 is disposed in the plug 311.
In this embodiment, the separable connector 31 includes an insulating housing 313 and a plug 311, the insulating housing 313 is in a T-shape and has a mounting hole and a plugging hole which are horizontally communicated, and also has a terminal hole which is vertically communicated, a connecting terminal is arranged in the terminal hole, one end of the connecting terminal is connected with the cable 33 in a crimping manner, the other end of the connecting terminal extends into a communication position of the mounting hole and the plugging hole, and a connecting end portion of another cable 33 is plugged in the plugging hole to be in threaded connection with the other end of the connecting terminal, so that the separable connector 31 using this structure can solve the connection problem of cables 33 with different diameters and improve the applicability. Specifically, the plug 311 is made of an insulating material, such as epoxy resin, and the plug 311 is used for plugging the mounting hole to shield the threaded connection structure, so that the plug can be matched with the insulating housing 313 to perform waterproof and dustproof sealing on the connection portion of the two cables 33. Locate temperature chip 51 in this end cap 311, can specifically carry out the trompil grooving setting towards the one side that connecting terminal is connected at end cap 311, locate this slotted hole with temperature chip 51 to guarantee the degree of accuracy of the temperature of the cable 33 junction that records, also can protect temperature chip 51 simultaneously, avoid factors such as steam or dust to influence.
Here, in order to improve the waterproof protection to two wire cores 331, be provided with waterproof component in the position department of wire core 331 and connecting terminal crimping, this waterproof component presss from both sides and locates between the junction of wire core 331 and connecting terminal crimping and the inner wall face in terminal hole, prevents effectively that outside steam from getting into the junction position department that two wire cores 331 dock through wire core 331, guarantees the effective waterproof of junction position. Meanwhile, the insulating housing 313 can be made of a V0-grade flame retardant material, so that the flame retardant effect of the separable connector 31 is effectively improved, and the explosion-proof performance and the flame retardant performance of the connection of the cable 33 in the cable connection box 100 are effectively ensured by matching with the box body 10 with the explosion-proof function.
In addition, in order to further improve the waterproof performance, the connection assembly 30 further includes a sleeve 35, where the sleeve 35 has two connection ends disposed at an interval and used for electrical connection, and each of the connection ends is correspondingly inserted into a plug hole of one of the separable connectors 31.
Here, connect through two separable connectors 31 and a sleeve 35 between two sinle silks 331, the shape of sleeve 35 is roughly the U type, have two intervals and set up and be used for the link of electricity connection, each link corresponds the jack that inserts a separable connector 31 respectively, and be connected with the connection piece of connecting terminal through the screw thread, thereby realize the electricity connection between two connecting terminals, and then realize the electricity connection of two sinle silks 331, so, connect two sinle silks 331 at a certain distance apart and carry out the electricity, even the sinle silk 331 of some cables 33 gets into steam, also can effectively block this part steam and climb to sinle silk 331 department of another cable 33 through the junction, further improve water-proof effects, breakdown accident has been reduced.
In an optional embodiment, the temperature measuring chip 51 and the plug 311 are integrally molded by casting; and/or the temperature measuring antenna 53 is arranged close to the plug 311.
In this embodiment, in order to realize stable installation of the temperature measuring chip 51, the temperature measuring chip 51 and the plug 311 are integrally molded by casting, so that on one hand, the structure stability is good, and the temperature measuring chip 51 is not exposed to the external environment, thereby improving the protection of the temperature measuring chip 51; on the other hand, the number of subsequent assembly steps can be reduced, the efficiency of attachment and detachment can be improved, and the connection of the separable connector 31 is not affected. Meanwhile, as the transmission signal between the temperature measuring antenna 53 and the temperature measuring chip 51 in the plug 311 has a requirement on the distance, and the transmission signal is poor if the distance is far away, the temperature measuring antenna 53 is arranged close to the plug 311, so that the stability of the transmission signal can be improved, and the stability of the function of monitoring the temperature on line is ensured.
Referring to fig. 2, in an optional embodiment, one of the cables 33 includes a plurality of wire cores 331, the connection assembly 30 includes a plurality of separable connectors 31, two of the wire cores 331 are correspondingly connected through the separable connectors 31, the cable connection box 100 further includes a CT power taking device 90, the CT power taking device 90 includes a CT current transformer 91 and a CT power taking dedicated power supply 93 which are electrically connected, the CT current transformer 91 is sleeved on at least one of the wire cores 331, and the CT power taking dedicated power supply 93 is disposed in the accommodating cavity 10a and electrically connected to the temperature collector 55.
In this embodiment, the cable connection box 100 connects two multi-core cables 33, that is, each cable 33 includes a plurality of cores 331, here, three cores 331, which correspond to the phase a, the phase B, and the phase C, each core 331 corresponds to the separable connector 31 one by one, and different cores 331 of two cables 33 are correspondingly connected through the separable connectors 31, so that different connection objects can be adapted to, and the expandability is improved. Here, still be equipped with the CT in the box 10 and get electric installation 90, the CT is got electric installation 90 and is included CT current transformer 91 and CT and gets special power 93, and CT current transformer 91 is cyclic annular, and on a sinle silk 331 was located to the cover, obtains the electric current from sinle silk 331 in through electromagnetic induction to transmit to CT and get special power 93 department, CT gets special power 93 and integrates the received electric current, provides the electric energy for the part in the box 10. Here, CT gets electric dedicated power source 93 and can locate the box 10 bottom, easy to assemble to be connected with DTU and temperature collector 55 electricity through the cable, thereby provide the electric energy for both. The CT current transformers 91 can be sleeved on any of the wire cores 331, and the number of the CT current transformers 91 can be selected according to the power of the equipment connected by the cable 33, for example, when the power is high, each wire core 331 is provided with the CT current transformer 91, or two of the wire cores 331 are provided with the CT current transformers 91, so that a reliable and stable power supply can be provided.
Here, since the wire core 331 is connected by the separable connector 31, the three-phase wire core 331 does not need to be coated by a tape, and thus the original connection structure of the cable 33 is not affected by the arrangement of the CT current transformer 91, and the electrical, mechanical, waterproof, and other performances of the connection assembly 30 are not affected. Meanwhile, the cable junction box 100 of the structure is provided with the box body 10, so that the CT power taking device 90 is protected from outside, and the influence of the external environment can be isolated, so that the use performance of the CT power taking device 90 can be obviously improved, the power supply is ensured, the setting of a plurality of sensors can be realized, a plurality of online monitoring functions of the cable junction box 100 are realized, and the observability and controllability of the cable junction box are further improved.
Referring to fig. 4, in an optional embodiment, the cable connection box 100 further includes a partial discharge monitoring assembly, the partial discharge monitoring assembly includes a partial discharge acquisition terminal 21 and a partial discharge monitoring sensor, which are electrically connected to each other, the partial discharge monitoring sensor and the partial discharge acquisition terminal 21 are disposed in the accommodating cavity 10a at an interval, and the partial discharge acquisition terminal 21 is electrically connected to the CT power supply dedicated power supply 93.
In this embodiment, in order to increase the functionality, still be equipped with the partial discharge monitoring subassembly in the box 10, it puts collection terminal 21 including the partial discharge monitoring sensor and the partial discharge of electricity connection, and the partial discharge monitoring sensor is through monitoring cable 33 or sinle silk 331's electric current to put collection terminal 21 with monitoring signal transmission to the partial discharge, and the partial discharge collection terminal 21 is handled the partial discharge current signal who receives, and the analysis partial discharge situation and this partial discharge data of storage. The partial discharge acquisition terminal 21 is also electrically connected to the wireless transmission terminal 70 so as to transmit the partial discharge monitoring result to an external device through the wireless transmission antenna 71, thereby facilitating the monitoring of the user. Meanwhile, the partial discharge acquisition terminal 21 is electrically connected with the CT power-taking special power supply 93, so that the CT power-taking special power supply 93 supplies power to the CT power-taking special power supply, and a monitoring function is realized.
In an alternative embodiment, the partial discharge monitoring sensor comprises at least one of a high frequency current transformer 23 and a transient earth-voltage signal sensor 25.
In this embodiment, the partial discharge monitoring sensor may select a High Frequency Current Transformer (HFCT) 23, which measures a partial discharge signal by measuring a High Frequency current; a Transient Earth Voltage Transmitter (TEV) 25 may be selected to monitor partial discharge by using a Transient Earth Voltage, and of course, the two partial discharge monitoring sensors may be selected at the same time to improve the monitoring accuracy, and the partial discharge acquisition terminal 21 may analyze data obtained by the TEV and the HFCT to obtain a partial discharge amount and analyze a partial discharge condition. The TEV may be directly mounted on the inner surface of the case 10, for example, on the inner surface of the cover 11, and connected to the partial discharge collection terminal 21 by a cable. Since the HFCT requires the grounding wire 60 connected to the cable 33 and the grounding wire 60 of the separable connector 31 to perform measurement, when HFCT is selected, in an embodiment, the cable junction box 100 further includes a grounding copper bar 40, and the grounding copper bar 40 is electrically connected to the cable 33 and the separable connector 31 through the grounding wire 60, respectively, so that grounding of the cable 33 and the separable connector 31 can be achieved, and the use safety of the cable junction box 100 is increased. The ground copper bar 40 may be disposed at the bottom of the box 13 for easy installation and operation. Thus, the HFCT can be sleeved on the ground wire 60 to realize real-time monitoring, and the monitored partial discharge data can be transmitted to the partial discharge acquisition terminal 21 for processing and analysis.
Of course, when the HFCT is not provided, the ground copper bar 40 may be provided, and the ground copper bar 40 is electrically connected to the cable 33, the box 10, and the separable connector 31 through the ground wire 60, so that the entire cable junction box 100 can be grounded, and the safety in use can be ensured.
In addition, other monitoring devices, such as water level monitoring or ground circulation, may also be disposed in the cable connection box 100, which is not described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A cable junction box, comprising:
the refrigerator comprises a box body, a door body and a door body, wherein an accommodating cavity is formed in the box body;
the connecting assembly is arranged in the accommodating cavity and comprises a separable connector and two cables respectively connected to two ends of the separable connector; and
the temperature measurement assembly comprises a temperature measurement chip, a temperature measurement antenna and a temperature collector, the temperature measurement chip is arranged in the separable connector, the temperature measurement antenna and the temperature collector are arranged on the inner wall surface of the accommodating cavity, and the temperature measurement antenna can receive a temperature signal of the temperature measurement chip and send the temperature signal to the temperature collector.
2. The cable junction box of claim 1, further comprising a wireless transmission terminal and a wireless transmission antenna electrically connected to each other, wherein the wireless transmission terminal is disposed on the wall of the accommodating cavity and electrically connected to the temperature collector, the box body is provided with an antenna hole, and the wireless transmission antenna is disposed on a periphery of the antenna hole.
3. The cable connection box of claim 1, wherein the temperature measurement chip is connected with the temperature measurement antenna through RFID radio frequency communication; and/or the presence of a gas in the gas,
the temperature measurement antenna is electrically connected with the temperature collector through a cable.
4. The cable connection box according to claim 1, wherein the separable connector comprises an insulating housing and a plug, a mounting hole is formed at one end of the insulating housing, the plug is arranged in the mounting hole, and the temperature measuring chip is arranged in the plug.
5. The cable junction box of claim 3, wherein the temperature measuring chip is integrally cast with the plug; and/or the presence of a gas in the gas,
the temperature measuring antenna is arranged close to the plug.
6. The cable junction box of any one of claims 1 to 5, wherein one cable includes a plurality of wire cores, the connection assembly includes a plurality of separable connectors, two of the wire cores are correspondingly connected through the separable connectors, the cable junction box further includes a CT power taking device, the CT power taking device includes a CT current transformer and a CT power taking dedicated power supply which are electrically connected, the CT current transformer is sleeved on at least one of the wire cores, and the CT power taking dedicated power supply is disposed in the accommodating cavity and electrically connected with the temperature collector.
7. The cable junction box of claim 6, further comprising a partial discharge monitoring assembly, wherein the partial discharge monitoring assembly comprises a partial discharge acquisition terminal and a partial discharge monitoring sensor electrically connected to each other, the partial discharge monitoring sensor and the partial discharge acquisition terminal are disposed in the accommodating cavity at intervals, and the partial discharge acquisition terminal is electrically connected to the special power supply for electricity taking of the CT.
8. The electrical cable connection cabinet of claim 7, wherein the partial discharge monitoring sensor comprises at least one of a high frequency current transformer and a transient earth-voltage signal sensor.
9. The electrical cable connection cabinet of claim 6, wherein the connector assembly further comprises a sleeve having two spaced apart electrical connection terminals, each of the connection terminals being insertable into a respective one of the mating holes of the separable connector.
10. The electrical cable connection box of claim 1, further comprising a ground copper bar electrically connected to the electrical cable and the separable connector, respectively, by a ground wire; and/or the presence of a gas in the gas,
the box body is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110093615.3A CN112803326A (en) | 2021-01-25 | 2021-01-25 | Cable junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110093615.3A CN112803326A (en) | 2021-01-25 | 2021-01-25 | Cable junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112803326A true CN112803326A (en) | 2021-05-14 |
Family
ID=75811489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110093615.3A Pending CN112803326A (en) | 2021-01-25 | 2021-01-25 | Cable junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112803326A (en) |
-
2021
- 2021-01-25 CN CN202110093615.3A patent/CN112803326A/en active Pending
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