Passive wireless temperature measurement wiring terminal

Abstract

The utility model provides a passive wireless temperature measurement wiring terminal, which comprises a terminal main body, a passive wireless temperature measurement chip and a packaging layer, and is characterized in that the terminal main body comprises a wiring end and a connecting end, the wiring end is provided with a wiring hole, the connecting end is provided with a bolt connecting hole, and the passive wireless temperature measurement chip is connected with the packaging layer. A chip containing groove is formed in the side, away from the wiring end, of the outer wall of the bolt connecting hole, and the passive wireless temperature measurement chip is installed in the chip containing groove and packaged through the packaging layer. According to the utility model, when a distribution line runs, the real-time running temperature of the wiring terminal can be directly measured, and data can be safely transmitted back in a passive and wireless manner, so that remote online monitoring of the running state of the wiring terminal is realized, and when the state of the wiring terminal is abnormal, key data support can be provided for power distribution overhaul and operation and maintenance; and safe operation of the distribution line is ensured.

Description

Technical Field

[0001] The utility model relates to the field of wiring terminals, in particular to a passive wireless temperature measurement wiring terminal. Background Art

[0002] With the rapid development of cable power transmission and distribution technology, the use of cables for power transmission and distribution has become the first choice for urban power supply in large and medium-sized cities. When using cables for power transmission and distribution, conductor connection must require terminals. Due to the fact that there may be certain changes in terminal design, material selection, size matching, construction differences, and line fluctuations, accidents often lead to damage to terminals. Terminals are the main carriers of power transmission. When the terminal is damaged, its current carrying capacity decreases, the temperature of the connection point will rise, causing a chain reaction such as the expansion of the accident impact and the escalation of the accident.

[0003] In view of this, if a passive wireless temperature measurement terminal block can be designed to remotely measure the real-time operating status of the terminal block online, it can prevent problems before they occur, which is very meaningful for the safe operation of the line. Utility Model Content

[0004] In order to solve the problem in the prior art that the real-time operating status of a wiring terminal cannot be grasped in time, the utility model provides a passive wireless temperature measurement wiring terminal.

[0005] The utility model provides a passive wireless temperature measurement terminal, comprising a terminal body, a passive wireless temperature measurement chip and a packaging layer, wherein the terminal body comprises a wiring terminal and a connecting terminal, the wiring terminal is provided with a wiring hole, the connecting end is provided with a bolt connection hole, and a chip accommodating groove is provided on a side of an outer wall of the bolt connection hole away from the wiring terminal, the passive wireless temperature measurement chip is installed in the chip accommodating groove and is packaged by the packaging layer.

[0006] As a further improvement of the present invention, the chip accommodating groove is arranged in a non-stress-bearing area of ​​the connecting end of the terminal body.

[0007] As a further improvement of the utility model, a plating protective layer is provided on the surface of the terminal body.

[0008] As a further improvement of the utility model, the electroplated protective layer is a tin-plated protective layer or a silver-plated protective layer.

[0009] As a further improvement of the present invention, the expansion coefficient of the encapsulation layer is between 10 and 70*10 -6 / ℃.

[0010] As a further improvement of the present invention, the encapsulation layer is an epoxy resin encapsulation layer or a liquid silicone rubber encapsulation layer.

[0011] As a further improvement of the present invention, the passive wireless temperature measurement terminal further includes a wireless transceiver module, and the wireless transceiver module is communicatively connected to the passive wireless temperature measurement chip.

[0012] As a further improvement of the present invention, the chip accommodating groove is a countersunk hole type, a countersunk groove type or an arc groove type.

[0013] As a further improvement of the present invention, a gap is provided between the chip accommodating groove and the passive wireless temperature measurement chip, and the gap is between 0.2-2 mm.

[0014] As a further improvement of the present invention, the connection end of the terminal body is connected to the cable by a bolt locking connection, a crimping connection, a strap connection or a spring contact finger connection.

[0015] The beneficial effects of the utility model are as follows: the utility model can directly measure the real-time operating temperature of the terminal blocks when the distribution line is running, and transmit the data safely back in a passive wireless manner, thereby realizing remote online monitoring of the operating status of the terminal blocks, and can provide key data support for distribution inspection and operation and maintenance when the terminal blocks are in abnormal status, thereby ensuring the safe operation of the distribution line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a passive wireless temperature measurement terminal block of the utility model;

[0017] Figure 2 It is a cross-sectional view of another angle of a passive wireless temperature measurement terminal of the utility model;

[0018] Figure 3 It is a structural schematic diagram of another embodiment of a passive wireless temperature measurement terminal block of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a third embodiment of a passive wireless temperature measurement terminal block of the utility model.

[0020] Figure numerals: 1-terminal body; 2-wiring terminal; 3-connection end; 4-bolt connection hole; 5-passive wireless temperature measurement chip; 6-chip accommodating groove; 7-packaging layer. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation description may be based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0022] In the description of the utility model, if there is a description of quantity, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of first or second, it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] like Figures 1 to 4 As shown, the utility model discloses a passive wireless temperature measurement terminal, including a terminal body 1, a passive wireless temperature measurement chip 5 and a packaging layer 7, the terminal body 1 includes a wiring terminal 2 and a connecting terminal 3, the wiring terminal 2 is provided with a wiring hole for connecting to a cable, the connecting terminal 3 is provided with a bolt connection hole 4, the outer wall of the bolt connection hole 4 is provided with a chip accommodating groove 6 on the side away from the wiring terminal 2, the passive wireless temperature measurement chip 5 is installed in the chip accommodating groove 6 and is packaged by the packaging layer 7.

[0025] The utility model can transmit the operating temperature of the connection terminal in a passive wireless manner when the distribution line is running, measure the operating temperature in real time, and accurately grasp the operating status.

[0026] In the present invention, the chip accommodating groove 6 is arranged in the non-stressed area of ​​the connecting end 3 of the terminal body 1. This can prevent the connecting end 3 of the terminal body 1 from being damaged by the passive wireless temperature measurement chip 5 due to the pre-tightening of the bolts during installation.

[0027] In the present invention, the material of the terminal body 1 can be common conductor materials such as copper / aluminum / copper-aluminum transition, or customized materials such as special alloys can be used according to actual use requirements.

[0028] In the present invention, the connection end 3 of the terminal body 1 can be connected to the cable by a crimping structure as specified in GB / T 14315, or by a new connection method such as bolt locking, strap connection, spring contact finger connection, etc.

[0029] In the utility model, the conductor cross-sectional area design of the current carrying capacity of the terminal body 1 can refer to the GB / T 14315 standard when the rated current is 630A or 1250A. In large current application scenarios, such as ultra-large capacities such as rated currents of 2500A, 3200A, and 4000A, the appropriate size can be determined based on electrothermal coupling simulation or sample measurement. Although its size has exceeded the range of traditional terminal blocks, the utility model is still applicable and can accurately measure the conductor temperature in large current application scenarios.

[0030] In the utility model, the surface of the terminal body 1 is provided with an electroplating protective layer, which can prevent the terminal body 1 from being oxidized or damaged.

[0031] In the utility model, the electroplated protective layer is a tin-plated protective layer or a silver-plated protective layer. In order to improve the reliability of electrical conduction and prevent oxidation, tin-plating or silver-plating can be used. In order to prevent damage during storage, transportation and installation, nickel-plating can also be used. Nickel-plating is not suitable for high-current application scenarios, and silver-plating is preferred in high-current application scenarios.

[0032] In the present invention, the dimensions of the passive wireless temperature measurement chip 5 should not be too large. Its side length is preferably 2 to 8 mm, its width is preferably 2 to 5 mm, and its height is preferably 1 to 4 mm. The actual dimensions are determined by simulation or actual measurement based on the actual structural dimensions of the terminal body 1. In the present invention, in order to prevent the passive wireless temperature measurement chip 5 and the terminal body 1 from being offset and misaligned during storage, transportation, and use, a packaging layer 7 is used during molding to package and fix the passive wireless temperature measurement chip 5 and the terminal body 1. The packaging layer 7 requires a small thermal expansion coefficient, generally required to be 10 to 70*10 -6 / ℃, and requires good thermal stability and can operate for a long time at 90℃. The material of the encapsulation layer 7 is preferably epoxy resin or liquid silicone rubber.

[0033] In the present invention, the passive wireless temperature measurement terminal also includes a wireless transceiver module, and the wireless transceiver module is connected to the passive wireless temperature measurement chip 5. The passive wireless temperature measurement chip 5 is activated by sending a wireless signal through the external wireless transceiver module. After being activated, the passive wireless temperature measurement chip 5 measures the real-time operating temperature of the terminal body 1, converts it into a wireless signal and transmits it back to the wireless transceiver module, and then enters a dormant state, thereby realizing passive wireless remote online status monitoring of the terminal body 1.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the chip accommodating groove 6 is a countersunk hole type, a countersunk groove type or an arc groove type. The specific form can be determined according to the size of the wireless chip 1 and the processing cost.

[0035] In the present technical solution, a gap is provided between the chip accommodating groove 6 and the passive wireless temperature measurement chip 5, and the gap is between 0.2-2 mm, which is convenient for installation.

[0036] The utility model can directly measure the real-time operating temperature of the wiring terminals when the distribution line is running, and transmit the data safely back in a passive wireless manner, thereby realizing remote online monitoring of the operating status of the wiring terminals. When the wiring terminals are in an abnormal state, it can provide key data support for distribution inspection and operation and maintenance, thereby ensuring the safe operation of the distribution line.

[0037] The utility model has the characteristic of not changing the external dimensions of the original wiring terminal, which is very critical in the application of miniaturized products with limited use space. It can directly realize the online monitoring of the operating status of the wiring terminal under the premise of equivalently replacing the ordinary wiring terminal. It is not only suitable for standard wiring terminals, but also can be applied to the status monitoring of various large current non-standard terminals, and has universal applicability.

[0038] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A passive wireless temperature measurement terminal block, characterized in that: It includes a terminal body, a passive wireless temperature measurement chip and a packaging layer. The terminal body includes a wiring terminal and a connecting terminal. The wiring terminal is provided with a wiring hole, and the connecting end is provided with a bolt connection hole. The outer wall of the bolt connection hole is provided with a chip accommodating groove on the side away from the wiring terminal. The passive wireless temperature measurement chip is installed in the chip accommodating groove and is packaged by the packaging layer.

2. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The chip accommodating groove is arranged in a non-stress-bearing area of ​​the connecting end of the terminal body.

3. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The surface of the terminal body is provided with an electroplating protective layer.

4. The passive wireless temperature measurement terminal according to claim 3, characterized in that: The electroplating protective layer is a tin-plating protective layer or a silver-plating protective layer.

5. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The expansion coefficient of the encapsulation layer is 10 to 70*10 -6 / ℃.

6. The passive wireless temperature measurement terminal according to claim 5, characterized in that: The encapsulation layer is an epoxy resin encapsulation layer or a liquid silicone rubber encapsulation layer.

7. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The passive wireless temperature measurement terminal also includes a wireless transceiver module, and the wireless transceiver module is communicatively connected with the passive wireless temperature measurement chip.

8. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The chip accommodating groove is a countersunk hole type, a countersunk groove type or an arc groove type.

9. The passive wireless temperature measurement terminal according to claim 1, characterized in that: A gap is provided between the chip accommodating groove and the passive wireless temperature measurement chip, and the gap is between 0.2-2 mm.

10. The passive wireless temperature measurement terminal according to claim 1, characterized in that: The connecting end of the terminal body is connected to the cable by bolt locking connection, crimping connection, strap connection or spring contact finger connection.

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