CN210863850U - Detection equipment for cable metal sheath circulation - Google Patents
Detection equipment for cable metal sheath circulation Download PDFInfo
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- CN210863850U CN210863850U CN201921468081.2U CN201921468081U CN210863850U CN 210863850 U CN210863850 U CN 210863850U CN 201921468081 U CN201921468081 U CN 201921468081U CN 210863850 U CN210863850 U CN 210863850U
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Abstract
The application discloses detection equipment for cable metal sheath circulation, which comprises an electric device and a walking device; the electric device includes: an induction coil coupled to the cable for electromagnetically inducing a circulating current of the cable to generate an induced current; the temperature measuring instrument is arranged at the induction coil and used for detecting the temperature value at the induction coil; the MCU is connected with the temperature measuring instrument and used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the number of preset coil turns of the induction coil; the preset database stores the corresponding relation among the temperature value, the preset coil turns and the circulating current value. According to the method and the device, the temperature of the induction coil coupled with the cable is detected, and then the corresponding circulation value is searched and confirmed in the preset database stored with the relevant corresponding relation, and the multipoint detection can be effectively implemented based on the set walking device, so that the method and the device not only greatly reduce the manual operation cost and improve the detection efficiency and convenience, but also effectively ensure the operation safety.
Description
Technical Field
The application relates to the technical field of power detection, in particular to detection equipment for cable metal sheath circulation.
Background
Cables play an important role in the transmission of electrical energy in today's society. Typically, the cable is surrounded by a sealed metal sheath to prevent moisture ingress and the like. In the process of transmitting alternating current, the cable can generate induced voltage and induced circulation on the metal sheath along with the change of a magnetic field excited by the alternating current. The metal sheath circulating current can affect the normal operation of the cable and even cause line faults. Therefore, it is very important and necessary to detect the circulating current of the cable metal sheath in order to prevent the occurrence of a failure.
In the prior art, some manual clamp meter methods are often adopted for detection, so that the efficiency is low, time and labor are consumed, the safety is poor, and particularly some high-voltage transmission cables are adopted. In view of the above, it is an important need for those skilled in the art to provide a solution to the above technical problems.
SUMMERY OF THE UTILITY MODEL
The purpose of the application is to provide a detection device for cable metal sheath circulation, so as to effectively improve detection efficiency and convenience and ensure safety during detection.
In order to solve the technical problem, the application discloses a detection device for cable metal sheath circulation, which comprises an electric device and a walking device; the electrical device includes:
an induction coil coupled to the cable for electromagnetically inducing a circulating current of the cable to generate an induced current;
the temperature measuring instrument is arranged at the induction coil and is used for detecting the temperature value at the induction coil;
the MCU is connected with the thermodetector and is used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the number of preset coil turns of the induction coil; and the preset database stores the corresponding relation among the temperature value, the preset number of turns of the coil and the circulating current value.
Optionally, the induction coil is provided with a coil turn number adjusting tap;
the electric device also comprises an input module connected with the MCU and used for inputting the updated and adjusted preset number of turns of the coil.
Optionally, the input module is further configured to receive an input device parameter;
and the MCU is specifically used for searching and determining a corresponding circulating current value in a preset database according to the temperature value, the preset number of turns of the coil and the equipment parameter.
Optionally, the device parameter includes any one or any combination of the following:
cable parameters, induction coil parameters, load current parameters, environmental parameters.
Optionally, a fuse is connected in series in the induction coil.
Optionally, the electrical apparatus further comprises an alarm module coupled to the fuse for alarming after the fuse is blown.
Optionally, the alarm module further comprises a charging unit.
Optionally, the walking device comprises any one or any combination of the following:
rollers, tracks, rails, and wings.
The detection equipment for the cable metal sheath circulation comprises an electric device and a walking device; the electrical device includes: an induction coil coupled to the cable for electromagnetically inducing a circulating current of the cable to generate an induced current; the temperature measuring instrument is arranged at the induction coil and is used for detecting the temperature value at the induction coil; the MCU is connected with the thermodetector and is used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the number of preset coil turns of the induction coil; and the preset database stores the corresponding relation among the temperature value, the preset number of turns of the coil and the circulating current value.
Therefore, the temperature of the induction coil coupled with the cable is detected, the corresponding circulation value is searched and confirmed in the preset database stored with the relevant corresponding relation, and the multipoint detection can be effectively implemented based on the set walking device, so that the manual operation cost is greatly reduced, the detection efficiency and the convenience are improved, and the operation safety is effectively ensured.
Drawings
In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the drawings that are needed to be used in the description of the prior art and the embodiments of the present application will be briefly described below. Of course, the following description of the drawings related to the embodiments of the present application is only a part of the embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the provided drawings without any creative effort, and the obtained other drawings also belong to the protection scope of the present application.
Fig. 1 is a block diagram of a detection apparatus for detecting a cable metal sheath circulating current according to an embodiment of the present disclosure.
Detailed Description
The core of the application is to provide a detection device for the cable metal sheath circulation, so that the detection efficiency and convenience are effectively improved, and the safety in detection is ensured.
In order to more clearly and completely describe the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
At present, often adopt some artifical tong-ammeter methods to detect among the prior art, not only inefficiency, consuming time and power, the security is relatively poor moreover, especially some high-voltage transmission cables. In view of this, the present application provides a device for detecting cable metal sheath circulating current, which can effectively solve the above problem.
Referring to fig. 1, an embodiment of the present application discloses a detection apparatus for cable metal sheath circulating current, which mainly includes an electrical device 100 and a traveling device 200; the electric device 100 includes:
an induction coil 101 coupled to the cable for performing electromagnetic induction with a circulating current of the cable to generate an induced current;
the temperature measuring instrument 102 is arranged at the induction coil 101 and is used for detecting the temperature value at the induction coil 101;
the MCU103 is connected with the temperature detector 102 and used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the preset coil turns of the induction coil 101; the preset database stores the corresponding relation among the temperature value, the preset coil turns and the circulating current value.
It should be noted that the apparatus for detecting the circulating current of the cable metal sheath provided in the embodiment of the present application is an apparatus capable of automatically detecting the circulating current of the cable metal sheath, wherein the electrical device 100 is used for performing the detection operation; the running gear 200 is used to control the movement of the detection apparatus.
It will be readily appreciated by those skilled in the art that loop current detection of a cable typically requires multi-point detection, taking into account the length of the cable in a practical application. Thus, with the walking device 200 provided in the embodiment of the present application, the detection apparatus can move by itself to perform multi-point detection.
As a specific example, the walking device 200 may include any one or any combination of the following: rollers, tracks, rails, and wings. Specifically, a person skilled in the art may select the type of the traveling device 200 according to actual conditions, so as to assemble the detection apparatus disclosed in the embodiment of the present application as a roller type detection robot, or as a crawler type detection robot, a rail type detection robot, a detection unmanned aerial vehicle, etc., which is not further limited in this application.
The electric device 100 for detecting the circulating current mainly comprises an induction coil 101, a temperature measuring instrument 102 and an MCU103, wherein the induction coil 101 is coupled with a cable and generates induction current related to the circulating current based on electromagnetic induction; once the induction current is generated in the induction coil 101, the induction current will also generate heat, and heat energy is radiated to the surrounding environment, and the temperature of the induction coil 101 is directly related to the magnitude of the induction current, and further related to the circulating current.
Certainly, under the condition that the material of the induction coil 101 is fixed, the temperature value at the position of the induction coil 101 is also related to the preset number of turns of the coil of the induction coil 101, therefore, for a certain type of induction coil 101, the temperature value has a corresponding relationship with the preset number of turns of the coil and the circulation value, that is, the circulation value and the preset number of turns of the coil determine the size of the temperature value, if the circulation value and the preset number of turns of the coil are known, the corresponding temperature value can be determined, and conversely, if the temperature value and the preset number of turns of the coil are known, the corresponding circulation value can be determined.
In the embodiment of the present application, the MCU103 stores a preset database, the preset database can be generated according to test data of a large number of samples, and stores a corresponding relationship among a temperature value, a preset number of turns of the coil, and a circulating current value. Therefore, when the circulating current detection is performed by using the detection device according to the embodiment of the present application, the temperature value measured by the thermometer 102 and the set preset number of turns of the coil can be searched in the preset database, and the corresponding circulating current value obtained from the preset database is the circulating current value of the cable at the current detection point.
The storage structure of the preset database can be designed by a person skilled in the art according to the actual application. Referring to table 1, table 1 exemplarily lists partial data of a preset database provided in an embodiment of the present application. Wherein, I1 represents the circulation value, T represents the temperature value, and N represents the preset number of coil turns.
TABLE 1
The detection equipment for the cable metal sheath circulation provided by the embodiment of the application comprises an electric device 100 and a walking device 200; the electric device 100 includes: an induction coil 101 coupled to the cable for performing electromagnetic induction with a circulating current of the cable to generate an induced current; the temperature measuring instrument 102 is arranged at the induction coil 101 and is used for detecting the temperature value at the induction coil 101; the MCU103 is connected with the temperature detector 102 and used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the preset coil turns of the induction coil 101; the preset database stores the corresponding relation among the temperature value, the preset coil turns and the circulating current value.
It can be seen that, according to the present application, the temperature of the induction coil 101 coupled to the cable is detected, and then the corresponding circulating current value is searched and confirmed in the preset database in which the relevant correspondence is stored, and the multipoint detection can be effectively implemented based on the set traveling device 200, so that the present application not only greatly reduces the manual operation cost, improves the detection efficiency and convenience, but also effectively ensures the operation safety.
On the basis of the above, in the detection apparatus for cable metal sheath circulating current provided in the embodiment of the present application, as a specific embodiment, the induction coil 101 is provided with a coil turn number adjusting tap; the electrical device 100 further comprises an input module connected to the MCU103 for inputting the updated and adjusted preset number of coil turns.
Specifically, in the apparatus for detecting a cable metal sheath circulating current provided in the embodiment of the present application, the number of turns of the preset coil of the induction coil 101 may be changed subsequently after the initial setting based on the introduction of the tap adjusted based on the number of turns of the coil. In addition, correspondingly, in the embodiment of the present application, an input module is further provided for the MCU103, and the input module can be used to input the modified preset number of turns of the coil to the MCU 103.
On the basis of the above content, in the detection apparatus for cable metal sheath circulating current provided in the embodiment of the present application, as a specific embodiment, the input module is further configured to receive an input apparatus parameter; the MCU103 is specifically configured to search and determine a corresponding circulating current value in a preset database according to the temperature value, the number of turns of the preset coil, and the device parameter.
Specifically, the apparatus for detecting cable metal sheath circulating current provided in the embodiments of the present application is not limited to operate in a fixed state of a certain apparatus parameter, but may be replaced with a plurality of states of the apparatus parameter. As a specific embodiment, the device parameter may include any one or any combination of the following: cable parameters, induction coil 101 parameters, load current parameters, environmental parameters.
Further, the cable parameters may specifically include the voltage class, rated current, model, length, material of the metal sheath, etc. of the cable; the parameters of the induction coil 101 may specifically include coil diameter, coil area, coil material, free length, etc.; the environmental parameters may specifically include ambient temperature, ambient humidity.
The device parameters may affect the correspondence between the circulating current value, the number of turns of the preset coil, and the temperature value, for example, when the circulating current value and the number of turns of the preset coil are the same, the temperature value corresponding to the induction coil 101 with the larger diameter is generally lower than the temperature value corresponding to the induction coil 101 with the smaller diameter.
On the basis of the above, in the apparatus for detecting cable metal sheath circulating current provided in the embodiment of the present application, as a specific embodiment, a fuse is connected in series in the induction coil 101.
Particularly, with the fuse, an excessive temperature can be prevented, thereby further improving operational safety.
On the basis of the above, in the apparatus for detecting cable sheath circulating current provided in the embodiment of the present application, as a specific embodiment, the electrical device 100 further includes an alarm module coupled to the fuse, and configured to alarm after the fuse is blown.
On the basis of the above, in the detection apparatus for cable metal sheath circulating current provided in the embodiment of the present application, as a specific embodiment, the alarm module further includes a charging unit.
Specifically, in order to improve the sustainable usability of the alarm module, the embodiment of the application provides a charging unit for the alarm module, so that the alarm module can be charged in time.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the equipment disclosed by the embodiment, the description is relatively simple because the equipment corresponds to the method disclosed by the embodiment, and the relevant parts can be referred to the method part for description.
It is further noted that, throughout this document, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall into the protection scope of the present application.
Claims (8)
1. The detection equipment for the cable metal sheath circulating current is characterized by comprising an electric device and a walking device; the electrical device includes:
an induction coil coupled to the cable for electromagnetically inducing a circulating current of the cable to generate an induced current;
the temperature measuring instrument is arranged at the induction coil and is used for detecting the temperature value at the induction coil;
the MCU is connected with the thermodetector and is used for searching and determining a corresponding circulating current value in a preset database according to the temperature value and the number of preset coil turns of the induction coil; and the preset database stores the corresponding relation among the temperature value, the preset number of turns of the coil and the circulating current value.
2. The detection apparatus according to claim 1, wherein the induction coil is provided with a coil turn number adjusting tap;
the electric device also comprises an input module connected with the MCU and used for inputting the updated and adjusted preset number of turns of the coil.
3. The detection device of claim 2, wherein the input module is further configured to receive an input device parameter;
and the MCU is specifically used for searching and determining a corresponding circulating current value in a preset database according to the temperature value, the preset number of turns of the coil and the equipment parameter.
4. The detection device according to claim 3, wherein the device parameters include any one or any combination of:
cable parameters, induction coil parameters, load current parameters, environmental parameters.
5. The detection apparatus of claim 1, wherein a fuse is connected in series in the induction coil.
6. The detection apparatus of claim 5, wherein the electrical device further comprises an alarm module coupled to the fuse for alarming after the fuse is blown.
7. The detection device of claim 6, wherein the alarm module further comprises a charging unit.
8. The detection apparatus according to any one of claims 1 to 7, wherein the walking device comprises any one or any combination of the following:
rollers, tracks, rails, and wings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921468081.2U CN210863850U (en) | 2019-09-04 | 2019-09-04 | Detection equipment for cable metal sheath circulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921468081.2U CN210863850U (en) | 2019-09-04 | 2019-09-04 | Detection equipment for cable metal sheath circulation |
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| CN210863850U true CN210863850U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412330A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A kind of detection device of cable metal shield circulating current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412330A (en) * | 2019-09-04 | 2019-11-05 | 广东电网有限责任公司 | A kind of detection device of cable metal shield circulating current |
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