CN215498228U - Cable intermediate head and cable intermediate head temperature measurement system - Google Patents
Cable intermediate head and cable intermediate head temperature measurement system Download PDFInfo
- Publication number
- CN215498228U CN215498228U CN202121125014.8U CN202121125014U CN215498228U CN 215498228 U CN215498228 U CN 215498228U CN 202121125014 U CN202121125014 U CN 202121125014U CN 215498228 U CN215498228 U CN 215498228U
- Authority
- CN
- China
- Prior art keywords
- cable
- intermediate joint
- temperature
- cable intermediate
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a cable intermediate joint and a cable intermediate joint temperature measurement system, wherein the cable intermediate joint comprises a connecting pipe, an intermediate joint main body, a shielding net, a temperature measurement chip and a radio frequency signal receiving and transmitting device; the connecting pipe is used for connecting the wire cores of the two cables; the middle joint main body is sleeved on the periphery of the connecting pipe; the shielding net is sleeved on the periphery of the middle joint main body; the temperature measuring chip is embedded in the connecting pipe; the radio frequency signal transceiver is arranged between the middle joint main body and the shielding net and used for receiving data of the temperature measuring chip and transmitting the data to the background system. The utility model can realize safer, more effective and more accurate measurement of the actual operating temperature of the wire core inside the cable intermediate joint.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a cable intermediate joint and a cable intermediate joint temperature measuring system.
Background
The weak link in the cable system is the cable accessory, and the cable accessory system needs to be monitored if the cable system can normally operate. The accessory of the cable is divided into a middle part and a terminal, the high-voltage end of the terminal is generally exposed in the air or in the high-voltage air, all indexes are easy to monitor, but the terminal exposed in the air is greatly influenced by the environment and cannot accurately reflect the running condition of the cable. The operation environment of the cable intermediate joint is closed, and the operation state of the cable can be accurately reflected by monitoring the state of the intermediate joint. Generally, the intermediate joint of the cable is of a fully-sealed and fully-shielded structure, and the internal space is small, for example, the intermediate joint of a 10KV cable cannot monitor the temperature at the connection position of the internal wire core by using the conventional means.
Common methods for monitoring the temperature of a cable core include optical fiber monitoring, chip monitoring, thermocouple monitoring, self-powered sensor monitoring and the like, wherein the thermocouple and the optical fiber monitoring need to be led out from a high-voltage end in an intermediate joint, a discharge path from the high-voltage end to a low-voltage end of the intermediate joint is easy to form, and thus, an intermediate joint accident caused by creepage is caused; the self-powered sensor uses a multilayer coil to obtain electricity by induction, has large volume and cannot be arranged on a cable with a small section; the chip sensor has weak transmission signals and cannot break through the shielding layer of the intermediate joint.
Because most of the cable intermediate joints are directly buried underground, the service life of electronic components is seriously influenced by water vapor. Currently, there is no safe and effective method for measuring the temperature of the inner core of the intermediate joint of the high-voltage cable.
The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a cable intermediate joint, aiming at accurately measuring the actual operating temperature of the cable intermediate joint.
In order to achieve the purpose, the cable intermediate joint provided by the utility model comprises a connecting pipe, an intermediate joint main body, a shielding net, a temperature measuring chip and a radio frequency signal receiving and transmitting device;
the connecting pipe is used for connecting the wire cores of the two cables;
the middle joint main body is sleeved on the periphery of the connecting pipe;
the shielding net is sleeved on the periphery of the middle joint main body;
the temperature measuring chip is embedded in the connecting pipe;
the radio frequency signal transceiver is arranged between the middle joint main body and the shielding net and used for receiving the data of the temperature measuring chip and transmitting the data to the background system.
In one embodiment, the outer wall surface of the connecting pipe is provided with a groove, the temperature measuring chip is embedded in the groove, and the outer wall surface of the temperature measuring chip is flush with the outer wall surface of the connecting pipe.
In one embodiment, the temperature measuring chip is arranged in a sheet shape or a block shape.
In an embodiment, the radio frequency signal transceiver is arranged corresponding to the temperature measuring chip in the inner and outer directions of the cable intermediate joint.
In one embodiment, each cable comprises three wire cores, the two wire cores opposite to each other of the cable are connected through a connecting pipe, and a temperature measuring chip is embedded in each connecting pipe;
each connecting pipe all overlaps in proper order and is equipped with the one deck intermediate head main part and one deck the shielding net, each connecting pipe outside the pipe the intermediate head main part with all be provided with one between the shielding net radio frequency signal transceiver.
In one embodiment, two ends of the middle connector body extend to cover the two cables respectively, and two ends of the middle connector body are provided with sealing layers.
In one embodiment, the intermediate joint body is externally covered with an epoxy resin layer, or the periphery of the intermediate joint body is sequentially covered with a waterproof belt and an armor belt.
The utility model also provides a temperature measuring system of the cable intermediate joint, which comprises the cable intermediate joint, a temperature collector and a power taking device;
the cable intermediate joint comprises a connecting pipe, an intermediate joint main body, a shielding net, a temperature measuring chip and a radio frequency signal receiving and transmitting device;
the connecting pipe is used for connecting the wire cores of the two cables;
the middle joint main body is sleeved on the periphery of the connecting pipe;
the shielding net is sleeved on the periphery of the middle joint main body;
the temperature measuring chip is embedded in the connecting pipe;
the radio frequency signal transceiver is arranged between the middle joint main body and the shielding net and used for receiving the data of the temperature measuring chip and transmitting the data to a background system;
the temperature collector is connected with the radio frequency signal receiving and sending device of the cable intermediate joint through a radio frequency connecting wire so as to be used for collecting data of a temperature measuring chip of the cable intermediate joint and transmitting the data to a background system;
the electricity taking device is sleeved on the cable and used for supplying power to the temperature collector.
In an embodiment, the cable intermediate joint temperature measurement system further includes a data transmission unit, and the data transmission unit is electrically connected to the temperature collector and is used for transmitting the collected data to the background system through a wireless communication technology.
In an embodiment, the power taking device comprises an annular power taking CT, the cable intermediate joint temperature measuring system further comprises a special power supply and a standby power supply which are electrically connected with each other, an input end of the special power supply is electrically connected with the power taking CT, and an output end of the special power supply is electrically connected with the temperature collector and the data transmission unit.
In an embodiment, the cable intermediate joint temperature measurement system further includes a data concentration box, the data concentration box is located outside the cable intermediate joint, and the dedicated power supply, the standby power supply, the temperature collector, and the data transmission unit are installed in the data concentration box.
In an embodiment, the cable intermediate joint temperature measurement system further includes an optical fiber converter, the optical fiber converter is electrically connected to the temperature collector, the optical fiber converter has an optical fiber output section, and the optical fiber output section extends out of the cable intermediate joint and is electrically connected to the background system.
In one embodiment, the fiber optic converter and the temperature collector are mounted inside the cable intermediate head.
According to the cable intermediate joint, the temperature measuring chip is embedded in the connecting pipe, the size of the temperature measuring chip is small, the temperature of the connecting pipe can be measured more accurately without influencing the distribution of an electric field in the cable intermediate joint, the measured temperature data can be transmitted to the radio frequency signal receiving and transmitting device in a wireless mode, the structure is simpler and more reliable, and the cable intermediate joint is easy to install. Meanwhile, the radio frequency signal transceiver is arranged between the intermediate joint main body and the shielding net and used for receiving data of the temperature measuring chip and transmitting the data to the background system, and the shielding layer does not exist between the radio frequency signal transceiver and the temperature measuring chip, so that the radio frequency signal transceiver can accurately and stably receive transmission signals of the temperature measuring chip, and the temperature of the wire core in the intermediate joint of the cable can be measured more safely, effectively and accurately. In addition, through setting up temperature measurement chip and the components of a whole that can function independently of radio frequency signal transceiver, and make the temperature measurement chip inlay to put in the connecting pipe, radio frequency signal transceiver sets up on the outer wall of intermediate head main part, compares in whole embedding temperature measurement chip and radio frequency signal transceiver in the connecting pipe, can effectively reduce the groove area on the connecting pipe, and then can promote the structural strength of connecting pipe.
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 a schematic structural view of an embodiment of a joint in a cable according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of an embodiment of a cable intermediate connector temperature measurement system according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a schematic view of a portion of the cable intermediate connector temperature measurement system of FIG. 3;
FIG. 6 is a schematic structural diagram of another embodiment of a cable intermediate joint temperature measurement system according to the present invention;
FIG. 7 is a schematic flow chart illustrating a first embodiment of a connection method of a temperature measuring system of a cable intermediate joint according to the present invention;
FIG. 8 is a schematic flow chart illustrating a second embodiment of a connection method of a temperature measuring system of a cable intermediate joint according to the present invention;
FIG. 9 is a schematic flow chart illustrating a third embodiment of a connection method of a temperature measuring system of a cable intermediate joint according to the present invention;
FIG. 10 is a schematic flow chart illustrating a fourth embodiment of a connection method of a temperature measuring system of a cable intermediate joint according to the present invention;
FIG. 11 is a schematic flow chart illustrating a fifth embodiment of a connection method of a temperature measuring system of a cable intermediate joint according to the present invention;
FIG. 12 is a schematic flow chart illustrating a connection method of a temperature measuring system of a cable intermediate joint according to a sixth embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Cable |
160 | |
500 | |
| 110 | Connecting |
170 | Epoxy |
600 | |
| 111 | Groove | 180 | |
700 | |
| 120 | Intermediate |
190 | |
800 | |
| 130 | |
200 | |
810 | Optical |
| 140 | Temperature measuring |
300 | Electricity taking |
900 | Cable with a |
| 150 | Radio |
400 | |
910 | Wire core |
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 if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. 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 utility model provides a cable intermediate joint, which is exemplified by taking a 10kV cable intermediate joint as an example, and the rest 6kV, 20kV and 35kV cable intermediate joints can refer to the embodiment. The cable intermediate joint can be a cold-shrinkage power cable intermediate joint or a heat-shrinkage power cable intermediate joint.
In the embodiment of the present invention, as shown in fig. 1 to 4 and 6, the cable intermediate joint 100 includes a connecting pipe 110, an intermediate joint main body 120, a shielding net 130, a temperature measuring chip 140 and a radio frequency signal transceiver 150;
connecting tube 110 is used to connect cores 910 of two cables 900;
a middle joint body 120 sleeved on the periphery of the connection pipe 110;
the shielding net 130 is sleeved on the periphery of the middle joint main body 120;
the temperature measuring chip 140 is embedded in the connecting pipe 110;
the radio frequency signal transceiver 150 is disposed between the middle joint main body 120 and the shielding net 130, and the radio frequency signal transceiver 150 is configured to receive data of the temperature measuring chip 140 and transmit the data to the background system.
In this embodiment, the cable 900 may be a single-core cable 900, a two-core cable 900, a three-core cable 900, a four-core cable 900, a five-core cable 900, or the like. The core 910 may be any phase of the 10kV cable 900. When the cable intermediate joint 100 is used to connect two cables 900, the insulating layer at the end of the cable 900 is cut into a cone shape according to a certain size, and the inner semi-conducting layer with a certain size is exposed. Then, the core 910 of the two cables 900 is crimped by the connecting tube 110 to form a connected conductor, so as to electrically connect the two cables 900. After connecting tube 110 is crimped to core 910 of two cables 900, connecting tube 110 may be polished to eliminate tip discharge. Subsequently, a semiconductor self-adhesive tape can be wound around the connection pipe 110 such that it overlaps from the inner semiconductive layer at the end of one of the cables 900 to the inner semiconductive layer at the end of the other cable 900. And filling glue is wound on the semiconductor self-adhesive tape and fills the cone shape of the insulating layer of the cable 900 to be level with the cylindrical surface of the insulating layer. An insulating self-adhesive tape may then be wrapped around the outer layer of the potting compound such that the tape overlaps the insulating layer at the end of one of the cables 900 to the insulating layer at the end of the other cable 900.
The intermediate joint body 120 may be shrunk on the outer periphery of the connection pipe 110, that is, the outer periphery of the insulating self-adhesive tape, and two ends of the intermediate joint body 120 are extended to cover the outer semi-conductive layers of the two cables 900 respectively. The intermediate joint body 120 may be specifically a cold-shrink intermediate joint body 120. Optionally, the middle joint body 120 includes an insulating layer, an outer shielding layer and stress cones, wherein the outer shielding layer is located outside the insulating layer, and the stress cones are respectively located on inner walls of two ends of the insulating layer. The shielding mesh 130 may be specifically a copper shielding mesh 130. The two ends of the shielding mesh 130 are pressed against the copper shielding layer of the cable 900 and may be soldered by soldering or fixed by constant force springs.
The shape of the temperature measuring chip 140 may be many, and the temperature measuring chip may be designed according to actual requirements, and is not limited herein. The temperature measuring chip 140 may be embedded in the middle of the connecting tube 110, so as to avoid the temperature measuring chip 140 being affected when the connecting tube 110 is pressed. One temperature measuring chip 140 may be disposed on the connection tube 110, or two temperature measuring chips 140 may be disposed on the connection tube. By arranging the two temperature measurement chips 140, the acquired temperature data can be more accurate. In some embodiments, more than two temperature measurement chips 140 may be disposed on the connection tube 110. The temperature measuring chip 140 is embedded in the connecting tube 110, and specifically, a groove 111 may be formed on the connecting tube 110, and the temperature measuring chip 140 is embedded in the groove 111. Through the temperature measurement chip 140 being embedded in the connection pipe 110, compared with the temperature measurement chip 140 being disposed at one side of the connection pipe 110 or outside the connection pipe 110, the temperature measurement chip 140 can directly contact the solid conductive portion of the connection pipe 110, so that the actual operating temperature at the connection pipe 110 can be measured more accurately. And temperature measurement chip 140 is wireless passive chip, compares in other temperature measurement sensors, and is small, can directly measure the temperature when not influencing the inside electric field distribution of cable intermediate head 100 to can be with the temperature data of measurement to radio frequency signal transceiver 150 through wireless transmission.
The rf signal transceiver 150 may specifically include a wireless transceiver chip, and the rf signal transceiver 150 can provide energy for the temperature measurement chip 140 and receive a temperature signal of the chip at the same time, and can transmit the temperature signal data to the background system. The radio frequency signal transceiver 150 may transmit the temperature signal to the background system in a wired manner, or may transmit the temperature signal to the background system in a wireless manner, and specifically, may select a wired or wireless manner to transmit the temperature signal to the background system according to actual requirements. Through setting up radio frequency signal transceiver 150 between intermediate head main part 120 and shielding net 130, make radio frequency signal transceiver 150 hug closely the outer wall of intermediate head main part 120, no shielding layer blocks between temperature measurement chip 140 and the radio frequency signal transceiver 150, make radio frequency signal transceiver 150 can more effectual receipt temperature measurement chip 140's transmission signal to make the temperature measurement to cable intermediate head 100 more stable and accurate.
According to the cable intermediate joint 100, the temperature measuring chip 140 is embedded in the connecting pipe 110, so that the temperature measuring chip 140 is small in size, the temperature of the connecting pipe 110 can be measured more accurately while the distribution of an electric field in the cable intermediate joint 100 is not influenced, the measured temperature data can be transmitted to the radio frequency signal transceiver 150 in a wireless mode, the structure is simpler and more reliable, and the cable intermediate joint is easy to install. Meanwhile, the radio frequency signal transceiver 150 is disposed between the intermediate connector main body 120 and the shielding net 130, the radio frequency signal transceiver 150 is configured to receive data of the temperature measuring chip 140 and transmit the data to the background system, and no shielding layer is disposed between the radio frequency signal transceiver 150 and the temperature measuring chip 140, so that the radio frequency signal transceiver 150 can accurately and stably receive transmission signals of the temperature measuring chip 140, and the temperature of the core 910 inside the cable intermediate connector 100 can be measured more safely, effectively and accurately. In addition, the temperature measuring chip 140 and the rf signal transceiver 150 are separately disposed, and the temperature measuring chip 140 is embedded in the connecting pipe 110, and the rf signal transceiver 150 is disposed on the outer wall surface of the middle joint body 120, so that compared with the case where the temperature measuring chip 140 and the rf signal transceiver 150 are integrally embedded in the connecting pipe 110, the area of the groove 111 on the connecting pipe 110 can be effectively reduced, and the structural strength of the connecting pipe 110 can be further improved.
In an embodiment, referring to fig. 1 and fig. 2, a groove 111 is formed on an outer wall surface of the connection tube 110, the temperature measuring chip 140 is embedded in the groove 111, and the outer wall surface of the temperature measuring chip 140 is flush with the outer wall surface of the connection tube 110. By forming the groove 111 on the outer wall surface of the connection tube 110, the temperature measurement chip 140 can be directly embedded in the groove 111 of the connection tube 110 after the connection tube 110 is pressed and connected to the core 910 of the two cables 900, so that the overall installation mode is simpler and faster. The outer wall surface of the temperature measuring chip 140 is flush with the outer wall surface of the connecting pipe 110, so that when the semiconductor self-adhesive tape is wound outside the connecting pipe 110, the whole body is smoother, and meanwhile, the electric field distribution is more uniform.
Further, the temperature measuring chip 140 is disposed in a sheet or block shape. The cross section of the temperature measuring chip 140 may be rectangular, so that the temperature measuring chip 140 may be square or square. Through making temperature chip 140 be slice or cubic setting, compare in making temperature chip 140 be cyclic annular setting, can effectively reduce temperature chip 140's volume, and then reduce the area of seting up of connecting pipe 110 upper groove 111 to promote connecting pipe 110's structural strength. In other embodiments, the temperature measuring chip 140 may be annularly disposed to be sleeved on the outer circumference of the connecting tube 110.
In one embodiment, as shown in fig. 1 to 4, the rf signal transceiver 150 is disposed corresponding to the temperature measuring chip 140 in the inward and outward direction of the cable intermediate connector 100. In the inward and outward direction of the cable intermediate joint 100, that is, in the radial direction of the cable intermediate joint 100, the rf signal transceiver 150 is disposed corresponding to the temperature measuring chip 140. Therefore, the distance between the radio frequency signal transceiver 150 and the temperature measurement chip 140 is the shortest when the radio frequency signal transceiver 150 is over against the temperature measurement chip 140, so that the signal received by the radio frequency signal transceiver 150 from the temperature measurement chip 140 is stronger, the time for receiving the signal is the shortest, the overall temperature measurement speed is faster, and the response of the temperature measurement system is more sensitive.
In an embodiment, referring to fig. 3, 4 and 6, each cable 900 includes three cores 910, the cores 910 of two cables 900 are connected by a connection tube 110, and a temperature measuring chip 140 is embedded on each connection tube 110;
a middle connector main body 120 and a shielding net 130 are sequentially sleeved outside each connecting pipe 110, and a radio frequency signal transceiver 150 is arranged between the middle connector main body 120 and the shielding net 130 outside each connecting pipe 110.
In the present embodiment, the cable 900 is embodied as a three-core cable 900. The temperature measuring chip 140 is disposed at each joint of the three-core cable 900, so that the temperature of the connecting pipe 110 connected to the three core wires 910 can be measured respectively, and the temperature measuring data of the whole cable intermediate joint 100 can be more accurate. The three cores 910 at the ends of the two cables 900 are respectively connected in a butt joint manner through the connecting pipes 110, and a layer of middle joint main body 120 and a layer of shielding net 130 are sequentially sleeved outside each connecting pipe 110, that is, each of the butted cores 910 is separately connected. By arranging a radio frequency signal transceiver 150 between the middle joint main body 120 and the shielding net 130 outside each connecting pipe 110, that is, each phase of the cable 900 is correspondingly provided with one temperature measuring chip 140 and one radio frequency signal transceiver 150, the radio frequency signal transceiver 150 can respectively and independently receive transmission data of the temperature measuring chip 140 corresponding thereto and transmit the temperature data to a background system independently or together, so as to obtain the actual operating temperature of the connecting pipe 110 at the joint of each phase wire core 910, which is convenient for accurately monitoring the internal real-time temperature of the cable middle joint 100.
Actually, as shown in fig. 4, both ends of the intermediate joint body 120 extend to cover the two cables 900, respectively, and both ends of the intermediate joint body 120 are provided with the sealing layers 160.
In this embodiment, the sealing layer 160 may specifically include a sealing adhesive and a waterproof tape. The joint of both ends of the intermediate joint body 120 and the outer semi-conductive layer is sequentially wound with a sealant and a waterproof tape. Therefore, the internal sealing of the intermediate joint main body 120 can be realized, on one hand, water vapor can be prevented from entering the intermediate joint main body 120 to seriously affect the service life of the temperature measuring chip 140, and on the other hand, the water vapor in the intermediate joint main body 120 is blocked to reduce the influence of the water vapor on electric elements such as the radio frequency signal transceiver 150 and the like.
Specifically, the intermediate joint body 120 is externally covered with a waterproof layer, which may be an epoxy layer 170 or a waterproof tape 180. Referring to fig. 3 and 4, in an embodiment, the intermediate joint body 120 is covered with an epoxy layer 170. At this time, a PE (polyethylene) bag may be fitted to the outside of the intermediate joint body 120, and an epoxy resin layer 170 may be formed outside the intermediate joint body 120 by pouring an epoxy resin through an opening in the PE bag. Thus, the mechanical strength and the external explosion-proof performance of the cable intermediate joint 100 can be increased. Specifically, both ends of the epoxy layer 170 extend to the outer sheath covering the two cables 900.
In another embodiment, as shown in fig. 6, the outer periphery of the intermediate joint body 120 is covered with a waterproof tape 180 and a armor tape 190 in this order. A waterproof tape 180 may be coated on the periphery of the intermediate joint body 120, or two waterproof tapes 180 may be coated. In order to improve the overall waterproof performance of the cable intermediate joint 100, the outer periphery of the intermediate joint body 120 is optionally covered with two layers of waterproof tape 180 and armor tape 190 in sequence. Specifically, both ends of the inner waterproof tape 180 extend to the inner sheaths covering the two cables 900, both ends of the outer waterproof tape 180 extend to the outer sheaths covering the two cables 900, and both ends of the armor tape 190 extend to the outer sheaths covering the two cables 900. By providing the waterproof tape 180 and the armor tape 190 on the periphery of the intermediate joint body 120, the waterproof performance and the mechanical strength of the entire intermediate joint body 120 can be improved.
The utility model also provides a temperature measuring system of the cable intermediate joint, please refer to fig. 3 to fig. 6, the temperature measuring system of the cable intermediate joint comprises a temperature collector 200, a power taking device 300 and the cable intermediate joint 100, the specific structure of the cable intermediate joint 100 refers to the above embodiment, the temperature collector 200 is connected with the radio frequency signal transceiver 150 of the cable intermediate joint 100 through a radio frequency connecting line, so as to collect data of the temperature measuring chip 140 of the cable intermediate joint 100 and transmit the data to a background system; the power-taking device 300 is sleeved on the cable 900 and used for supplying power to the temperature collector 200. The cable intermediate joint temperature measuring system adopts all the technical schemes of all the embodiments, so that the cable intermediate joint temperature measuring system at least has all the beneficial effects brought by the technical schemes of the embodiments.
In the present embodiment, specifically, the middle joint main body 120 is covered with a waterproof layer, and the temperature collector 200 is disposed in the waterproof layer of the cable middle joint 100 or disposed outside the cable middle joint 100. The temperature collector 200 receives and processes the temperature signal sent by the rf signal transceiver 150 through the rf connection line, and can select a wired or wireless mode to send the signal to the background system as needed. It is understood that the temperature collector 200 can also supply power to the rf signal transceiver 150 through the rf connection line. Through making temperature collection ware 200 and radiofrequency signal transceiver 150 pass through the radio frequency connecting wire and be connected, compare in through wireless transmission, can avoid shielding layer etc. to the interference of signal, and then make the data transmission of whole temperature measurement system more stable. The power-taking device 300 can be sleeved on any phase of the cable 900 to supply power to the temperature collector 200. Get the electricity through setting up and get electric installation 300 from cable 900, for temperature collector 200 power supply, solve temperature collector 200's power supply difficult problem for temperature collector 200 can set up in a flexible way, thereby adapts to different on-the-spot demands. The electricity-taking device 300 may specifically include an annular electricity-taking CT (energy-taking transformer), which is sleeved on any phase of the cable 900 to obtain current and supply power to the temperature collector 200. In other embodiments, the temperature collector 200 may be powered by an additional power source.
The temperature collector 200 and the rf signal transceiver 150 may be separately or integrally disposed. Optionally, the temperature collector 200 is disposed separately from the rf signal transceiver 150. Therefore, the volume of the rf signal transceiver 150 is smaller, and the rf signal transceiver is easier to be mounted to the position outside the middle joint body 120 corresponding to the temperature measuring chip 140, so as to ensure stable reception of signals. And the temperature collector 200 and the rf signal transceiver 150 are installed at different positions, the temperature collector 200 can be installed outside the cable intermediate joint 100 or inside the cable intermediate joint 100 according to actual requirements.
The temperature measuring chip 140 is embedded in the connecting pipe 110 of the cable intermediate joint 100, and the radio frequency signal transceiver 150 is arranged between the intermediate joint main body 120 and the shielding net 130. The temperature collector 200 is connected with the radio frequency signal transceiver 150 through a radio frequency connecting line, so as to collect data of the temperature measuring chip 140 of the cable intermediate joint 100 and transmit the data to the background system; the power-taking device 300 is sleeved on the cable 900 and used for supplying power to the temperature collector 200. The temperature measuring chip 140 can accurately measure the temperature of the core 910 of the cable intermediate joint 100 without affecting the electric field distribution inside the cable intermediate joint 100, and the temperature measuring chip 140 and the radio frequency signal transceiver 150 and the like do not damage the insulation level of the whole cable intermediate joint 100, so that the temperature measurement of the whole cable intermediate joint temperature measuring system on the chip inside the cable intermediate joint 100 is faster, safer and more effective.
In an embodiment, as shown in fig. 3 and 5, the cable intermediate joint temperature measurement system further includes a data transmission unit 400, and the data transmission unit 400 is electrically connected to the temperature acquisition device 200 for transmitting the acquired data to the background system through a wireless communication technology.
In this embodiment, the data transmission unit 400(DTU) and the temperature collector 200 are electrically connected through a wire, and the temperature collector 200 collects the signal sent by the rf signal transceiver 150, transmits the signal to the data transmission unit 400, and transmits the signal to the background system by using a 2G or 4G wireless communication technology. The data collected by the temperature collector 200 is transmitted to the background system by the wireless communication technology, so that the operation parameters of the cable 900 can be remotely monitored on line, and the connection of lines can be reduced compared with a wired transmission mode.
Further, referring to fig. 3, the power-taking device 300 includes an annular power-taking CT, the cable intermediate joint temperature measurement system further includes a dedicated power supply 500 and a standby power supply 600 electrically connected to each other, an input end of the dedicated power supply 500 is electrically connected to the power-taking CT, and an output end of the dedicated power supply 500 is electrically connected to the temperature collector 200 and the data transmission unit 400.
In this embodiment, the power CT is specifically a split ring, and the power CT can be sleeved on the copper shielding layer of the cable 900 through the split ring. By electrically connecting the input terminal of the dedicated power supply 500 to the power-taking CT, the dedicated power supply 500 can function as a voltage stabilizer, and can control the current obtained by the power-taking CT to be a controllable stable output required by the target application. So that the output terminal of the dedicated power supply 500 is electrically connected to the temperature collector 200 and the data transmission unit 400, the dedicated power supply 500 can stably output the electric energy obtained from the power-on CT to the temperature collector 200 and the data transmission unit 400. By providing the backup power supply 600 and electrically connecting the backup power supply 600 to the dedicated power supply 500, the backup power supply 600 can obtain and store electric energy from the dedicated power supply 500, and can continuously supply power to the entire system when the power is cut off. The supply time of the standby electric energy can be set according to the requirement or standard, and can be 12 hours, for example. The special power supply 500, the standby power supply 600, the temperature collector 200 and the data transmission unit 400 can be placed in a collection box outside the cable intermediate joint 100 according to actual conditions, and can also be sealed inside a waterproof layer of the cable intermediate joint 100.
Based on the above embodiment, referring to fig. 5, the cable intermediate joint temperature measurement system further includes a data collection box 700, the data collection box 700 is located outside the cable intermediate joint 100, and the dedicated power supply 500, the standby power supply 600, the temperature collector 200, and the data transmission unit 400 are installed in the data collection box 700. Through setting up special power supply 500, stand-by power supply 600, temperature collection ware 200 and data transmission unit 400 in the outside data set case 700 of cable intermediate head 100, then can reduce cable intermediate head 100's volume, and be convenient for later maintenance and maintenance more.
In an embodiment, as shown in fig. 6, the cable intermediate joint temperature measurement system further includes an optical fiber converter 800, the optical fiber converter 800 is electrically connected to the temperature collector 200, the optical fiber converter 800 has an optical fiber output section 810, and the optical fiber output section 810 extends to the outside of the cable intermediate joint 100 and is electrically connected to the background system. Through setting up optical fiber converter 800, can pass through optical fiber converter 800 conversion with the data that temperature collection ware 200 collected to transmit to backstage system through the optic fibre output, then compare in the mode through wireless transmission data, the optic fibre signal does not receive electromagnetic field's interference, has guaranteed signal transmission's accuracy and has stronger interference killing feature.
Further, the optical fiber converter 800 and the temperature collector 200 are installed inside the cable intermediate joint 100. Through placing optical fiber converter 800 and temperature collection station 200 in the inside of cable intermediate head 100 waterproof layer in, only optical fiber output section 810 stretches out from cable intermediate head 100 is interior, and the interference of electromagnetic field is not received to the fiber signal, has guaranteed signal transmission's accuracy and has stronger interference killing feature, can deal with the environment to various complicacies. And the optical fiber converter 800 and the temperature collector 200 are installed without arranging an additional data concentration box 700 outside the cable intermediate joint 100, so that the cost can be saved. In other embodiments, the fiber optic converter 800 and the temperature harvester 200 may also be disposed outside of the cable intermediate joint 100.
The utility model also provides a connection method of the cable intermediate joint temperature measurement system, and the cable intermediate joint temperature measurement system can refer to the embodiment. As shown in fig. 7, the connection method of the cable intermediate joint temperature measurement system includes the following steps:
step S10, the wire cores 910 at the tail ends of the two cables 900 are crimped by the connecting pipe 110;
in this embodiment, before the cores 910 at the ends of the two cables 900 are crimped by the connecting tube 110, the sheaths and the shields at the ends of the two cables 900 are subjected to a conventional process, the insulating layers at the ends of the two cables 900 are cut into a cone shape according to a certain size, and the inner semiconductive layer with a certain size is exposed. Then, the connecting tube 110 is sleeved on the cores 910 of the two cable 900 modules and is crimped to form a connected conductor, so as to electrically connect the two cables 900. Specifically, the connection tube 110 may be polished to eliminate the tip discharge.
Step S20, the temperature measuring chip 140 is embedded in the groove 111 on the outer wall of the connection tube 110.
Specifically, the outer wall surface of the temperature measuring chip 140 is flush with the outer wall surface of the connecting tube 110. After the temperature measuring chip 140 is embedded in the groove 111 on the outer wall surface of the connection tube 110, a semiconductor self-adhesive tape may be wound around the connection tube 110 to seal the temperature measuring chip 140 in the groove 111 of the connection tube 110. And such that the semiconductor self-adhesive tape overlaps from the inner semiconductive layer at the end of one of the cables 900 to the inner semiconductive layer at the end of the other cable 900. And filling glue is wound on the semiconductor self-adhesive tape and fills the cone shape of the insulating layer of the cable 900 to be level with the cylindrical surface of the insulating layer. An insulating self-adhesive tape may then be wrapped around the outer layer of the potting compound such that the tape overlaps the insulating layer at the end of one of the cables 900 to the insulating layer at the end of the other cable 900. Therefore, the internal water resistance of the cable intermediate joint 100 can be realized, and the phenomenon that the service life of the temperature measuring chip 140 is influenced by the water vapor is avoided.
Step S30 is to shrink the intermediate joint body 120 around the connection pipe 110 so that both ends of the intermediate joint body 120 extend over the two cables 900, respectively.
Specifically, both ends of the intermediate joint body 120 are extended and covered onto the outer semi-conductive layers of the two cables 900, respectively, and the joints between both ends of the intermediate joint body 120 and the outer semi-conductive layers are sequentially wound with a sealant and a waterproof tape. Therefore, the internal sealing of the intermediate joint main body 120 can be realized, on one hand, water vapor can be prevented from entering the intermediate joint main body 120 to seriously affect the service life of the temperature measuring chip 140, and on the other hand, the water vapor in the intermediate joint main body 120 is blocked to reduce the influence of the water vapor on electric elements such as the radio frequency signal transceiver 150 and the like.
Step S40 is to fix the radio frequency signal transmitting/receiving device 150 to the outer wall surface of the intermediate joint body 120.
Specifically, the rf signal transceiver device 150 may be fixed to the outer wall surface of the middle joint body 120 by an adhesive tape.
The connection method of the cable intermediate joint temperature measurement system of the utility model is that the wire core 910 at the tail end of the two cables 900 is pressed by the connecting pipe 110, the temperature measurement chip 140 is embedded in the groove 111 on the outer wall surface of the connecting pipe 110, the intermediate joint main body 120 is contracted outside the connecting pipe 110, the two ends of the intermediate joint main body 120 respectively extend and cover to the two cables 900, and the radio frequency signal transceiver 150 is fixed on the outer wall surface of the intermediate joint main body 120. The installation of the temperature measuring device built in the intermediate joint main body 120 can be realized, the connection steps are few, and the installation mode is simple and quick.
Further, referring to fig. 8, the step of fixing the rf signal transceiver 150 on the outer wall surface of the middle joint body 120 specifically includes:
step S41, the rf signal transceiver 150 is fixed on the outer wall surface of the middle joint body 120, and the rf signal transceiver 150 is disposed opposite to the temperature measuring chip 140.
In this embodiment, a mark may be specifically set at a position of the middle connector main body 120 corresponding to the temperature measuring chip 140, so that a connection staff can fix the rf signal transceiver 150 on the outer wall surface of the middle connector main body 120 at a position facing the temperature measuring chip 140. Of course, the operator can also make the rf signal transceiver 150 face the temperature measuring chip 140 by visual observation or the like. By making the radio frequency signal transceiver 150 face the temperature measurement chip 140, the distance between the radio frequency signal transceiver 150 and the temperature measurement chip 140 is shortest, so that the signal received by the radio frequency signal transceiver 150 to the temperature measurement chip 140 is stronger, and the time for receiving the signal is shortest, thereby making the overall temperature measurement speed faster, and the response of the temperature measurement system more sensitive.
In an embodiment, as shown in fig. 9, the method for connecting the cable intermediate joint temperature measurement system further includes the steps of:
step S50, connecting the radio frequency signal transceiver 150 with the temperature collector 200 through a radio frequency connecting line;
step S61, the loop power CT is sleeved on the cable 900, and the loop power CT is connected to the temperature collector 200 through a wire.
In the present embodiment, step S50 may be performed before step S40, after step S40, or simultaneously with step S40. The side wall of the annular electricity-taking CT is provided with an opening, so that the annular electricity-taking CT is sleeved on the copper shielding layer of any phase cable 900 through the opening. Step S61 may be before or after any step of the overall connection method at this point. If the ring-shaped power-taking CT is not an open ring, step S61 is made before step S10. The temperature collector 200 may be disposed inside the cable intermediate joint 100 or may be disposed outside the cable intermediate joint 100.
Through making temperature collection ware 200 and radiofrequency signal transceiver 150 pass through the radio frequency connecting wire and be connected, compare in through wireless transmission, can avoid shielding layer etc. to the interference of signal, and then make the data transmission of whole temperature measurement system more stable. The annular electricity-taking CT is sleeved on the cable 900 and is connected with the temperature collector 200 through an electric wire, so that electricity can be taken from the cable 900 to supply power for the temperature collector 200, the power supply problem of the temperature collector 200 is solved, the temperature collector 200 can be flexibly arranged, and different field requirements can be met.
In an embodiment, referring to fig. 10, the step of connecting the rf signal transceiver 150 and the temperature collector 200 through the rf connection line further includes:
step S71, the temperature collector 200 and the optical fiber converter 800 are electrically connected, so that the temperature sensor and the optical fiber converter 800 are sealed inside the middle joint, and the optical fiber output section 810 of the optical fiber converter 800 is extended out of the middle joint.
In the present embodiment, step S71 should be performed before step S91 and step S92 below, the temperature sensor and the optical fiber converter 800 may be sealed inside the waterproof layer of the intermediate joint. Through setting up optical fiber converter 800, can pass through optical fiber converter 800 conversion with the data that temperature collection ware 200 collected to transmit to backstage system through the optic fibre output, then compare in the mode through wireless transmission data, the optic fibre signal does not receive electromagnetic field's interference, has guaranteed signal transmission's accuracy and has stronger interference killing feature. And the optical fiber converter 800 and the temperature collector 200 are arranged in the waterproof layer of the cable intermediate joint 100, and only the optical fiber output section 810 extends out of the cable intermediate joint 100, so that the optical fiber converter can cope with various complex environments. And the optical fiber converter 800 and the temperature collector 200 are installed without arranging an additional data concentration box 700 outside the cable intermediate joint 100, so that the cost can be saved.
In another embodiment, as shown in fig. 9 and 10, the connection method of the cable intermediate joint temperature measurement system further includes the steps of:
step S50, connecting the radio frequency signal transceiver 150 with the temperature collector 200 through a radio frequency connecting line;
step S62, sleeving the loop power-taking CT on the cable 900, so that the loop power-taking CT is connected to the input end of the dedicated power supply 500;
step S72, the temperature collector 200 is electrically connected to the data transmission unit 400, so that the output terminal of the dedicated power supply 500 is connected to the temperature collector 200 and the data transmission unit 400, respectively.
In this embodiment, by electrically connecting the input terminal of the dedicated power supply 500 to the power-taking CT, the dedicated power supply 500 can function as a voltage stabilizer, and can control the current obtained by the power-taking CT to be converted into a controllable stable output required by the target application. So that the output terminal of the dedicated power supply 500 is electrically connected to the temperature collector 200 and the data transmission unit 400, the dedicated power supply 500 can stably output the electric energy obtained from the power-on CT to the temperature collector 200 and the data transmission unit 400. The special power supply 500, the temperature collector 200 and the data transmission unit 400 can be placed in a collection box outside the cable intermediate joint 100 according to actual conditions, or can be sealed inside a waterproof layer of the cable intermediate joint 100. The data transmission unit 400(DTU) is electrically connected to the temperature collector 200 through an electric wire, so that the temperature collector 200 collects the signal sent by the rf signal transceiver 150, transmits the signal to the data transmission unit 400, and transmits the signal to the background system using 2G or 4G wireless communication technology. The data collected by the temperature collector 200 is transmitted to the background system by the wireless communication technology, so that the operation parameters of the cable 900 can be remotely monitored on line, and the connection of lines can be reduced compared with a wired transmission mode.
Further, referring to fig. 10, the step of sleeving the loop power-taking CT on the cable 900 to connect the loop power-taking CT with the input end of the special power supply 500 further includes:
step S73 is to electrically connect the dedicated power supply 500 and the backup power supply 600.
In the present embodiment, by providing the backup power source 600 and electrically connecting the backup power source 600 to the dedicated power source 500, the backup power source 600 can obtain and store electric energy from the dedicated power source 500, and can continuously supply power to the whole system when the power is cut off. The supply time of the standby electric energy can be set according to the requirement or standard, and can be 12 hours, for example.
Specifically, as shown in fig. 11, the step of connecting the temperature collector 200 and the data transmission unit 400 through a circuit so that the output end of the dedicated power supply 500 is respectively connected to the temperature collector 200 and the data transmission unit 400 specifically includes:
step S721, the temperature collector 200 is disposed outside the cable middle joint 100 and electrically connected to the data transmission unit 400, so that the output terminal of the dedicated power supply 500 is connected to the temperature collector 200 and the data transmission unit 400, respectively.
In this embodiment, the cable middle joint temperature measurement system may include a data concentration box 700, the data concentration box 700 is located outside the cable middle joint 100, and the dedicated power supply 500, the standby power supply 600, the temperature collector 200, and the data transmission unit 400 are installed in the data concentration box 700. Through setting up special power supply 500, stand-by power supply 600, temperature collector 200 and data transmission unit 400 in the outside data set case 700 of cable intermediate head 100, set up temperature collector 200 in cable intermediate head 100 outsidely, then can reduce cable intermediate head 100's volume, and be convenient for later maintenance and maintenance more.
In an embodiment, referring to fig. 12, the step of fixing the rf signal transceiver device 150 on the outer wall surface of the middle joint body 120 further includes:
step S80, arranging the shielding net 130 outside the middle connector main body 120, and making the shielding net 130 cover the radio frequency signal transceiver 150;
step S91, sequentially winding a waterproof belt 180 and an armor belt 190 outside the shielding net 130; or the like, or, alternatively,
step S92, epoxy resin is injected outside the shielding mesh 130.
In this embodiment, a waterproof tape 180 and a sheathing tape 190 are sequentially wound around the outer periphery of the intermediate joint body 120. A waterproof tape 180 may be coated on the periphery of the intermediate joint body 120, or two waterproof tapes 180 may be coated. In order to improve the overall waterproof performance of the cable intermediate joint 100, the outer periphery of the intermediate joint body 120 is optionally covered with two layers of waterproof tape 180 and armor tape 190 in sequence. Specifically, both ends of the inner waterproof tape 180 extend to the inner sheaths covering the two cables 900, both ends of the outer waterproof tape 180 extend to the outer sheaths covering the two cables 900, and both ends of the armor tape 190 extend to the outer sheaths covering the two cables 900. By providing the waterproof tape 180 and the armor tape 190 on the periphery of the intermediate joint body 120, the waterproof performance and the mechanical strength of the entire intermediate joint body 120 can be improved.
The intermediate joint body 120 is externally covered with an epoxy layer 170. At this time, a PE (polyethylene) bag may be fitted to the outside of the intermediate joint body 120, and an epoxy resin layer 170 may be formed outside the intermediate joint body 120 by pouring an epoxy resin through an opening in the PE bag. Thus, the mechanical strength and the external explosion-proof performance of the cable intermediate joint 100 can be increased. Specifically, both ends of the epoxy layer 170 extend to the outer sheath covering the two cables 900.
The above description is only a preferred embodiment of the present invention, and 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 (13)
1. A cable intermediate joint, comprising:
the connecting pipe is used for connecting the wire cores of the two cables;
the middle joint main body is sleeved on the periphery of the connecting pipe;
the shielding net is sleeved on the periphery of the middle joint main body;
the temperature measuring chip is embedded in the connecting pipe; and
and the radio frequency signal transceiver is arranged between the middle joint main body and the shielding net and is used for receiving the data of the temperature measuring chip and transmitting the data to the background system.
2. The intermediate cable joint according to claim 1, wherein the outer wall surface of the connecting pipe is provided with a groove, the temperature measuring chip is embedded in the groove, and the outer wall surface of the temperature measuring chip is flush with the outer wall surface of the connecting pipe.
3. The cable intermediate joint of claim 1, wherein the temperature measuring chip is arranged in a sheet or block shape.
4. The intermediate cable joint of claim 1, wherein the rf signal transceiver is disposed corresponding to the temperature measuring chip in the inner and outer directions of the intermediate cable joint.
5. The intermediate joint of cable as claimed in claim 1, wherein each cable includes three cores, two opposite cores of the cable are connected by a connecting pipe, and each connecting pipe is embedded with a temperature measuring chip;
each connecting pipe all overlaps in proper order and is equipped with the one deck intermediate head main part and one deck the shielding net, each connecting pipe outside the pipe the intermediate head main part with all be provided with one between the shielding net radio frequency signal transceiver.
6. The cable intermediate joint of claim 1, wherein both ends of the intermediate joint body extend over both cables, respectively, and wherein both ends of the intermediate joint body are provided with a sealing layer.
7. The cable intermediate joint according to any one of claims 1 to 6, wherein the intermediate joint body is externally covered with an epoxy resin layer, or wherein the outer periphery of the intermediate joint body is sequentially covered with a waterproof tape and an armor tape.
8. A cable intermediate head temperature measurement system, characterized by includes:
a cable intermediate joint according to any one of claims 1 to 7;
the temperature collector is connected with the radio frequency signal receiving and transmitting device of the cable intermediate joint through a radio frequency connecting wire, and is used for collecting data of a temperature measuring chip of the cable intermediate joint and transmitting the data to a background system; and
and the power taking device is sleeved on the cable and used for supplying power to the temperature collector.
9. The cable intermediate joint temperature measurement system of claim 8, further comprising a data transmission unit electrically connected to the temperature collector for transmitting the collected data to the background system via a wireless communication technology.
10. The cable intermediate joint temperature measurement system of claim 9, wherein the electricity-taking device comprises an annular electricity-taking CT, the cable intermediate joint temperature measurement system further comprises a dedicated power supply and a standby power supply electrically connected to each other, an input end of the dedicated power supply is electrically connected to the electricity-taking CT, and an output end of the dedicated power supply is electrically connected to the temperature collector and the data transmission unit.
11. The cable intermediate joint temperature measurement system of claim 10, further comprising a data concentration box located outside the cable intermediate joint, wherein the dedicated power supply, the backup power supply, the temperature collector, and the data transmission unit are installed in the data concentration box.
12. The cable intermediate joint temperature measurement system of claim 8, further comprising an optical fiber converter electrically connected to the temperature collector, the optical fiber converter having an optical fiber output section, the optical fiber output section extending outside the cable intermediate joint and electrically connected to the back-end system.
13. The cable intermediate joint temperature measurement system of claim 12, wherein the fiber optic converter and the temperature collector are mounted inside the cable intermediate joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121125014.8U CN215498228U (en) | 2021-05-24 | 2021-05-24 | Cable intermediate head and cable intermediate head temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121125014.8U CN215498228U (en) | 2021-05-24 | 2021-05-24 | Cable intermediate head and cable intermediate head temperature measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498228U true CN215498228U (en) | 2022-01-11 |
Family
ID=79780083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121125014.8U Active CN215498228U (en) | 2021-05-24 | 2021-05-24 | Cable intermediate head and cable intermediate head temperature measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498228U (en) |
-
2021
- 2021-05-24 CN CN202121125014.8U patent/CN215498228U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3198696B1 (en) | Cable terminal and termination with an integrated monitoring device | |
| US7719130B2 (en) | Power cable line | |
| CN204088784U (en) | A kind of embedded electric cable accessories with temperature and electric current on-line monitoring function | |
| CN106463901A (en) | Sensored electrical jumper | |
| KR20160053965A (en) | Systems and methods for monitoring temperature of electrical conductor | |
| CN215498228U (en) | Cable intermediate head and cable intermediate head temperature measurement system | |
| CN113471925B (en) | Cable joint | |
| CN202997493U (en) | Intelligent cable connector | |
| CN113270847A (en) | Cable intermediate joint, cable intermediate joint temperature measurement system and connection method thereof | |
| CN215498231U (en) | Cold-shrink intermediate joint and multi-core cable intermediate joint capable of monitoring temperature | |
| KR100971811B1 (en) | Optical Fiber Composite Power Cable Joint Box with Connector | |
| CN217642671U (en) | Cable temperature measurement type intermediate head | |
| WO2019229656A1 (en) | Power cable connection structure and temperature sensing system therefor | |
| CN113767290A (en) | Power cable joint device and electrical system | |
| CN214590528U (en) | Cable intermediate joint and joint assembly | |
| CN203562749U (en) | High-voltage cable connector accessory with insulation sleeve | |
| CN208127453U (en) | A kind of cable connection structure convenient for detection | |
| CN103618279B (en) | High-voltage cable joint annex and the infrared measurement of temperature method thereof of tape insulation cover | |
| CN203386897U (en) | Anti-interference antenna apparatus and apparatus with same | |
| CN107014501A (en) | A kind of cable connector internal signal collection waterproof is every pressure system and method | |
| CN206038159U (en) | High accuracy fixed point temperature measuring device | |
| CN103151615B (en) | Anti-interference antenna device | |
| CN110940430A (en) | Wireless temperature sensor suitable for underwater work | |
| CN112924746A (en) | Device and method for measuring phase voltage of high-voltage cable terminal head | |
| CN218781907U (en) | Wireless temperature measurement sensor for cable intermediate joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |