CN214200408U - Temperature measurement terminal device for electric power system - Google Patents
Temperature measurement terminal device for electric power system Download PDFInfo
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- CN214200408U CN214200408U CN202120389779.6U CN202120389779U CN214200408U CN 214200408 U CN214200408 U CN 214200408U CN 202120389779 U CN202120389779 U CN 202120389779U CN 214200408 U CN214200408 U CN 214200408U
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Abstract
The utility model discloses a temperature measurement terminating set for electric power system, include: the upper surface of the upper layer of the metal hoop is cut into a horizontal plane, and the lower surface of the upper layer of the metal hoop is provided with a first arc-shaped surface which can be attached to the outer wall of an object to be measured; the hoop lower layer is made of a non-metal material, a second arc-shaped surface is formed on the upper surface of the hoop lower layer, and the second arc-shaped surface and the first arc-shaped surface are spliced to form a channel for an object to be measured to pass through; the upper cover is made of non-metal materials and is spliced on the horizontal plane of the upper layer of the metal hoop, a groove is formed on the lower surface of the upper cover, and at least part of the groove corresponds to the position where the distance between the horizontal plane and the first arc-shaped surface is minimum; and the temperature measuring electronic tag is embedded in the groove and used for sensing the temperature of the object to be measured. The utility model discloses utilize the horizontal plane design on metal staple bolt upper strata to solve temperature measurement electronic tags's installation problem, utilize its first arcwall face to guarantee the inseparable laminating of temperature measurement electronic tags and the object that awaits measuring, the temperature measurement is real-time accurate, has improved temperature measurement precision and efficiency, has reduced the electric power safety risk.
Description
Technical Field
The utility model belongs to the technical field of electric power system's passive hyperfrequency RFID temperature measurement is used, especially, relate to a temperature measurement terminal device for electric power system.
Background
After the equipment is put into operation, the discontinuous connection points such as a high-voltage isolating switch, a high-voltage circuit breaker, a high-voltage cable joint and the like of the power system can easily cause temperature exceeding faults due to surface oxidation, corrosion, loosening of fasteners, aging of associated parts, overload operation of the equipment and other factors, and if the temperature exceeding faults are not found and processed in time, power accidents such as arcing, melting and even explosion can be caused;
therefore, temperature detection is an important content in the operation and maintenance management of the power system, and even at the substation level, the temperature can be measured by the following methods:
1. temperature measurement piece: the color of the temperature measuring sheet changes along with the change of the temperature of the measured point, and the approximate temperature of the measured point can be judged according to the color of the temperature measuring sheet, so that the temperature measuring method has the advantages of simple operation and low cost; the method has the defects of low precision and poor reliability, is suitable for visual areas, is purely manual and is not digital.
2. Infrared temperature measurement: the method has the advantages of non-contact measurement, large measurement range, high precision and digital informatization realization; the method has the disadvantages that the cost is expensive, the method is suitable for a non-light resistance area, and the factors influencing the temperature measurement accuracy are more: the emissivity of the surface of each metal is different, so that the temperature measurement accuracy is influenced; limiting the testing distance when the diameter of the temperature measuring target point is small; outdoor environment sunlight, air water mist and dust, infrared lens pollution, surrounding strong magnetic field interference influence factors such as temperature measurement and the like.
3. Optical fiber sensing temperature measurement: the device has the advantages of long-distance testing, higher precision, high voltage resistance, interference resistance, good insulation and digital informatization realization; the disadvantages are that wiring is needed, outdoor insulation and isolation are difficult, the whole cost is high, and short distance is not advantageous.
4. Active wireless temperature measurement: the temperature measuring power supply adopts CT induction power supply and batteries and a combination mode thereof. The method has the advantages of high precision and digital informatization realization; the defects are that the temperature measuring end has more parts, the working temperature is narrow, the reliability is poor, the service life is short and the cost is high.
In recent years, with the continuous upgrading of the voltage level and the automation technology level of the national power grid, the intelligent operation and maintenance level of the power system by the national power grid is continuously improved, the online operation temperature state of high-voltage power equipment (particularly an isolating switch) is detected through the technology of the internet of things, the acquisition of the operation information of the high-voltage power equipment can be realized, and a decision basis is provided for the safe operation and management of the high-voltage power equipment of the power grid. The traditional RFID temperature measuring device is generally used on a metal plane, has certain technical defects in the aspects of safety and reliability for a metal curved surface, and is difficult to meet the requirements of field application, particularly high voltage and large current. The technical device solution with safety, reliability, low cost and low operation and maintenance is urgently needed to be introduced, so that the metal curved surface hot spot can be accurately monitored in real time, and the safe operation of the power grid equipment is guaranteed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a temperature measurement precision is high, and temperature measurement efficiency is good, reduces the temperature measurement terminal device for electric power system of electric power safety risk.
The utility model provides a technical scheme that its technical problem adopted is: a temperature terminal device for an electrical power system, comprising:
the upper surface of the upper layer of the metal hoop is cut into a horizontal plane, and the lower surface of the upper layer of the metal hoop is provided with a first arc-shaped surface which can be attached to the outer wall of an object to be measured;
the hoop lower layer is made of a non-metal material, a second arc-shaped surface is formed on the upper surface of the hoop lower layer, and the second arc-shaped surface and the first arc-shaped surface are spliced to form a channel for an object to be measured to pass through;
the upper cover is made of non-metal materials and is spliced on the horizontal plane of the upper layer of the metal hoop, a groove is formed in the lower surface of the upper cover, and at least part of the groove corresponds to the position where the distance between the horizontal plane and the first arc-shaped surface is the minimum;
and the temperature measuring electronic tag is embedded in the groove and used for sensing the temperature of the object to be measured.
The utility model designs the upper layer of the metal hoop with the first arc-shaped surface, solves the application of the hard temperature measurement electronic tag on the metal curved surface, innovatively laminates the curved surface of the measured object through the form of the upper layer of the metal hoop, simultaneously transits from the curved surface to the horizontal surface, and utilizes the horizontal surface to install and laminate the temperature measurement electronic tag; the requirements of the temperature measurement electronic tag on the contact area, the size, the material, the attaching degree and the like of the grounding metal surface are severe, the grounding metal surface directly influences the gain, the impedance matching and the like of the temperature measurement electronic tag, and finally the radio frequency performance of the temperature measurement electronic tag is influenced, so that the temperature measurement electronic tag is prevented from being effectively identified within a certain distance, a water plane is formed on the upper surface of the upper layer of the metal hoop and is tightly attached to the temperature measurement electronic tag, and the performance of the temperature measurement electronic tag is not interfered by the external environment; because the groove is arranged at the position of the metal hoop, which is relatively small in thickness, when an object to be detected generates heat, the heat can be conducted to the temperature measurement electronic tag at the highest speed through the first arc-shaped surface, and the temperature monitoring is quicker and more accurate; the size of the temperature measurement electronic tag can be subjectively adjusted according to the size of the actually tested metal curved surface, the radio frequency performance and the temperature measurement, and only the size of the groove needs to be adaptively adjusted.
Furthermore, the lower layer and the upper cover of the hoop are made of PPS material, PEEK material or nylon material. The material has the advantages of high temperature and low temperature resistance, sunlight radiation resistance, good insulating property, good mechanical property, good microwave penetrability and no magnetic interference; and the temperature measurement electronic tag is well protected.
Furthermore, the outer contour of the spliced upper cover, the upper metal hoop layer and the lower hoop layer is cylindrical. The outline is smooth everywhere, avoids producing the edges and corners and leads to discharging, effectively prevents the point discharge under the high-voltage environment.
Further, the channel is eccentrically disposed.
Furthermore, the depth of the groove is 0.1-0.3mm smaller than the thickness of the temperature measurement electronic tag. The temperature measurement electronic tag can be effectively contacted with the upper layer of the metal hoop.
Furthermore, the upper cover and the upper layer of the metal hoop are fixedly connected by a plurality of nonmagnetic metal screws, and the upper layer of the metal hoop and the lower layer of the hoop are fixedly connected by a plurality of nonmagnetic metal screws.
If a conductor is placed in or moved relative to a changing magnetic field, currents are also induced in the conductor which self-close into eddy currents in the conductor, as the magnetic flux passing through the loop changes as the conductor forms a closed loop within it. Because the resistance of the conductor is small, the eddy current is generally large, and the eddy current can heat the conductor due to the heat effect of the current, so that the conductor is risky to a power system. The non-magnetic metal screws are used for fixing connection, so that the generation of eddy current can be reduced.
Furthermore, the temperature measurement electronic tag is an RFID temperature sensing tag.
By adopting an ultrahigh frequency RFID temperature-sensitive tag technology, the wireless communication distance between the temperature-sensitive tag and the temperature concentrator is more than 8 meters, and the requirement of high-voltage and high-isolation data transmission can be better met; the wireless power taking technology is adopted, a special chip working power supply is not needed, and the trouble of a conventional wireless communication power supply is avoided; the metal hoop is in contact connection with a first arc-shaped surface on the upper layer of the metal hoop, so that the metal hoop conducts heat and has the same potential with an object to be measured, and local arc discharge is avoided; the temperature detection requirement and the anti-interference requirement are met, and the structure is simple and reliable.
Furthermore, the temperature measurement electronic tag comprises a front conductive area, a back conductive area and a side conductive area.
Furthermore, the upper layer of the metal hoop is made of non-magnetic metal. When the metal hoop upper layer plays a good heat conduction role, the adverse effect on the performance of the temperature measurement electronic tag is avoided.
The utility model has the advantages that: the installation problem of the temperature measurement electronic tag is solved by the aid of the horizontal plane design of the upper layer of the metal hoop, the first arc-shaped surface of the metal hoop is designed to ensure that the temperature measurement electronic tag is tightly attached to an object to be measured, the problem that the temperature measurement electronic tag cannot be attached to a curved surface is solved, temperature measurement is real-time and accurate, the attachment is attractive and compact, temperature measurement precision and temperature measurement efficiency are greatly improved, and electric power safety risks are reduced; the upper cover has good protection effect on the temperature measuring electronic tag, and the service life of the temperature measuring electronic tag is prolonged; staple bolt lower floor cooperation metal staple bolt upper strata is fixed the object that awaits measuring, and the three is connected firmly, and corner seam crossing is smooth transition's arc structure, can not cause the pointed end discharge under the high-pressure environment.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic view of the exploded structure of the present invention.
Fig. 3 is a perspective view of the present invention with the upper cover removed.
Fig. 4 is a perspective view of the present invention with the upper cover and the object to be measured removed.
Fig. 5 is a schematic view of the bottom structure of the upper cover of the present invention.
Fig. 6 is a schematic diagram of the temperature measurement electronic tag of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1-6, a temperature measurement terminal device for an electric power system includes an upper cover 3, an upper metal hoop layer 1, a lower hoop layer 2, and a temperature measurement electronic tag 4 located between the upper metal hoop layer 1 and the upper cover 3; the metal hoop upper layer 1 and the hoop lower layer 2 are spliced to form a channel 6 for the object 5 to be tested to pass through, and in the embodiment, the object 5 to be tested is a cable or an isolating switch.
Specifically, as shown in fig. 3 and 4, the upper layer 1 of the metal hoop is made of non-magnetic metal, specifically, non-magnetic red copper material, the upper surface of the metal hoop is cut to form a horizontal plane 11, and the lower surface of the metal hoop forms a first arc-shaped surface 12 which can be attached to the outer wall of the object 5 to be measured.
The lower hoop layer 2 is made of a non-metal material, and specifically can be made of high-temperature resistant PPS and modified materials thereof, or PEEK and modified materials thereof, or nylon and modified materials thereof. The upper surface of the hoop lower layer 2 is provided with a second arc-shaped surface 21, the second arc-shaped surface 21 can also be attached to the outer wall of the object 5 to be detected, namely, the second arc-shaped surface 21 and the first arc-shaped surface 12 are spliced to form a channel 6 for the object 5 to be detected to pass through.
The upper cover 3 is made of non-metal material, and specifically can be made of high temperature resistant PPS and modified materials thereof, or PEEK and modified materials thereof, or nylon and modified materials thereof, and the like. The upper cover 3 is spliced on the horizontal plane 11 of the metal hoop upper layer 1, a groove 31 is formed in the lower surface of the upper cover, and the position of the groove 31 is set to enable at least part of the groove to correspond to the minimum distance between the horizontal plane 11 and the first arc-shaped surface 12. The embedded temperature measurement electronic tags 4 that is equipped with of recess 31 for the perception awaits measuring the temperature of object 5, for accurate monitoring temperature, in this embodiment, the axis of recess 31 is just right setting with the minimum department of thickness of metal staple bolt upper layer 1.
In this embodiment, the temperature measurement electronic tag 4 is an RFID temperature-sensitive tag, and includes a front conductive area 41, a back conductive area 42, and a side conductive area 43, and serves as an antenna to exert stable radio frequency performance, so that the temperature measurement electronic tag 4 can measure temperature and can stably transmit a signal back to the terminal. The middle part of the side surface conductive area 43 is divided into a chip 44 mounting area, the chip 44 integrates the ultrahigh frequency radio frequency identification capability and the temperature sensing capability at the same time, and simultaneously conforms to the ISO 18000-6C protocol, the distribution of the ultrahigh frequency national standard scanning frequency range is 840-960MHz, and the measurement frequency range is 920-925 MHz. The front conductive region 41 and the back conductive region 42 are electrically connected, and the chip 44 integrates the radio frequency function and the temperature sensing function.
In order to enable the temperature measurement electronic tag 4 in the groove 31 to fully contact the upper layer 1 of the metal hoop, the depth of the groove 31 is smaller than the thickness of the temperature measurement electronic tag 4 by 0.1-0.3mm, and the depth of the groove 31 is about 0.2mm thinner than the temperature measurement electronic tag 4 in the embodiment. Four corners of the groove 31 all form rounded corners, so that the groove is convenient to disassemble and assemble and can be used as a glue dispensing fixing space.
The outer contour is cylindrical after the upper cover 3, the metal hoop upper layer 1 and the hoop lower layer 2 are spliced, namely the outer contour has no edges and corners and is in smooth transition, so that point discharge under a high-voltage environment caused by the edges and corners is avoided. In this embodiment the channel 6 is arranged eccentrically, i.e. it is not in the exact centre of the cylinder, but in other embodiments it may be. The upper cover 3 is fixedly connected with the metal hoop upper layer 1 through four non-magnetic metal screws 7, and the metal hoop upper layer 1 is fixedly connected with the hoop lower layer 2 through four non-magnetic metal screws 7.
During the use, the object 5 that awaits measuring wears to establish in passageway 6, conducts its self temperature to temperature measurement electronic tags 4 through first arcwall face 12, and upper cover 3 avoids natural environment's direct damage temperature measurement electronic tags 4 such as solarization and rain, high low temperature, prolongs its life, guarantees that its long-time back temperature measurement precision of using guarantees at high level.
The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.
Claims (9)
1. A temperature measurement terminal device for an electric power system, characterized by comprising:
the upper surface of the upper layer (1) of the metal hoop is cut into a horizontal plane (11), and the lower surface of the upper layer of the metal hoop is provided with a first arc-shaped surface (12) which can be attached to the outer wall of an object to be detected (5);
the hoop lower layer (2) is made of non-metal materials, a second arc-shaped surface (21) is formed on the upper surface of the hoop lower layer, and the second arc-shaped surface (21) and the first arc-shaped surface (12) are spliced to form a channel (6) for an object (5) to be measured to pass through;
the upper cover (3) is made of non-metal materials and is spliced on the horizontal plane (11) of the upper layer (1) of the metal hoop, a groove (31) is formed in the lower surface of the upper cover, and at least part of the groove (31) corresponds to the position where the distance between the horizontal plane (11) and the first arc-shaped surface (12) is the minimum;
and the temperature measuring electronic tag (4) is embedded in the groove (31) and is used for sensing the temperature of the object to be measured (5).
2. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the hoop lower layer (2) and the upper cover (3) are made of PPS materials, PEEK materials or nylon materials.
3. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the outer contour of the spliced upper cover (3), the metal hoop upper layer (1) and the hoop lower layer (2) is cylindrical.
4. The temperature measuring terminal device for the electric power system according to claim 3, characterized in that: the channel (6) is arranged eccentrically.
5. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the depth of the groove (31) is 0.1-0.3mm smaller than the thickness of the temperature measurement electronic tag (4).
6. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the upper cover (3) and the metal hoop upper layer (1) are fixedly connected by a plurality of nonmagnetic metal screws (7), and the metal hoop upper layer (1) and the hoop lower layer (2) are fixedly connected by a plurality of nonmagnetic metal screws (7).
7. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the temperature measurement electronic tag (4) is an RFID temperature sensing tag.
8. The temperature measuring terminal device for the electric power system according to claim 7, characterized in that: the temperature measurement electronic tag (4) comprises a front conductive area (41), a back conductive area (42) and a side conductive area (43).
9. The temperature measuring terminal device for the electric power system according to claim 1, characterized in that: the metal hoop upper layer (1) is made of nonmagnetic metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120389779.6U CN214200408U (en) | 2021-02-22 | 2021-02-22 | Temperature measurement terminal device for electric power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120389779.6U CN214200408U (en) | 2021-02-22 | 2021-02-22 | Temperature measurement terminal device for electric power system |
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| CN214200408U true CN214200408U (en) | 2021-09-14 |
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| CN202120389779.6U Active CN214200408U (en) | 2021-02-22 | 2021-02-22 | Temperature measurement terminal device for electric power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125141A1 (en) * | 2021-12-27 | 2023-07-06 | 长春捷翼汽车科技股份有限公司 | Terminal temperature measurement structure |
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- 2021-02-22 CN CN202120389779.6U patent/CN214200408U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023125141A1 (en) * | 2021-12-27 | 2023-07-06 | 长春捷翼汽车科技股份有限公司 | Terminal temperature measurement structure |
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