A wireless temperature measuring device with an inner cone

Abstract

This utility model discloses an internal cone wireless temperature measurement device, including a stress cone with a conductive contact on it. The conductive contact is cylindrical and includes a cavity that communicates with the inner cavity of the stress cone. A mounting groove is also provided on the lower outer periphery of the conductive contact, communicating with the cavity. A wireless temperature measurement unit is disposed in the mounting groove. The advantages of this utility model are: by creating a cavity in the conductive contact and setting a mounting groove on its outer periphery, and then placing a wireless temperature measurement unit in the mounting groove, the device directly measures the temperature on the conductive contact and transmits the signal wirelessly. Through an externally installed wireless receiving device, real-time temperature monitoring of the conductive contact is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable accessories, and in particular to an inner cone plug-in terminal. Background Technology

[0002] In recent years, with the continuous development of the economy and society, urban electricity consumption has grown rapidly, and the number of newly added transmission lines has also increased year by year. However, due to urban planning, environmental landscape, and line corridor requirements, urban transmission lines are increasingly using cables. Internal tapered pluggable cable terminals, with their features of full insulation, full shielding, compact structure, easy installation, easy operation, reliable operation, and convenient maintenance, are widely used in subways, factories, and coastal and plateau regions, becoming an ideal accessory for 35 kV and below medium-voltage cross-linked cables.

[0003] Existing internal tapered plug-in terminals frequently burn out due to poor conductor contact. Since the internal conductors of the cable plug-in head carry high voltage, conventional thermocouple temperature measurement methods are clearly unsuitable. To prevent and reduce faults caused by excessive temperature rise at the connection points between cables and power distribution equipment, appropriate methods are needed to monitor the temperature of this critical component in real time. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an inner cone wireless temperature measurement device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is: an inner cone wireless temperature measuring device, including a stress cone, a conductive contact provided on the stress cone, the conductive contact being cylindrical, the conductive contact including a cavity, the cavity communicating with the inner cavity of the stress cone; the lower outer periphery of the conductive contact is also provided with a mounting groove, the mounting groove communicating with the cavity, and a wireless temperature measuring unit being provided in the mounting groove.

[0006] The beneficial effects of this utility model are as follows: This utility model creates a cavity in the conductive contact and sets an installation groove on the outer periphery of the conductive contact. Then, a wireless temperature measuring unit is set in the installation groove. The wireless temperature measuring unit directly measures the temperature on the conductive contact and transmits the signal wirelessly. Through an externally set wireless receiving device, real-time temperature monitoring of the conductive contact is achieved.

[0007] As a further improvement to the above technical solution, the lower part of the conductive contact is also provided with a locking screw hole, which communicates with the cavity. When a metal wire is inserted into the cavity of the conductive contact, the connection between the metal wire and the conductive contact can be made tighter by screwing a locking screw into the locking screw hole.

[0008] As a further improvement to the above technical solution, the angle between the axis of the locking screw hole and the axis of the conductive contact is α, where 95° < α < 110°. The slightly inclined locking screw hole makes operation more convenient, and the inclined locking force makes the connection between the metal wire and the conductive contact tighter.

[0009] As a further improvement to the above technical solution, there are two sets of locking screw holes, and the phase angle between the two sets of locking screw holes is β, where 120° < β < 150°. Using two sets of locking screw holes can further improve the connection reliability between the metal wire and the conductive contact.

[0010] As a further improvement to the above technical solution, a locking groove is also provided at the lower part of the conductive contact, and the locking groove is located on the back of the mounting groove. The wireless temperature measuring unit can be tightly fixed to the conductive contact using a clamp via the locking groove.

[0011] As a further improvement to the above technical solution, a load-bearing ring is also provided between the stress cone and the conductive contact, and a signal transmission layer is provided in the load-bearing ring. The wireless signal of the wireless temperature measurement unit can be transmitted outward through the load-bearing ring, thereby improving the reliability of the wireless temperature measurement device.

[0012] As a further improvement to the above technical solution, the upper part of the conductive contact is also provided with an annular positioning groove, on which a watchband finger is fitted. By providing a positioning groove on the conductive contact, the installation of the watchband finger is made more secure, and by increasing the number of watchband fingers, the conductivity of the conductive contact can be improved.

[0013] As a further improvement to the above technical solution, there are two sets of positioning grooves, both of which are located above the mounting groove.

[0014] As a further improvement to the above technical solution, clearance notches are also provided on both sides of the mounting groove. Providing clearance notches on both sides of the mounting groove makes the installation of the wireless temperature measurement unit more secure.

[0015] As a further improvement to the above technical solution, the upper end of the cavity of the conductive contact is closed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the inner cone wireless temperature measuring device of this utility model; Figure 2 This is a perspective view of the conductive contact of this utility model; Figure 3 This is another perspective view of the conductive contact of this utility model; Figure 4 This is a top view of the conductive contact of this utility model; Figure 5 yes Figure 4 AA section view in the image.

[0018] Figure label: Stress cone 100, conductive contact 200, cavity 210, mounting groove 220, clearance notch 221, locking screw hole 230, locking groove 240, positioning groove 250, wireless temperature measuring unit 300, clamp 400, load-bearing ring 500, watchband contact finger 600 Detailed Implementation The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model. Preferred embodiments of this utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, enabling a person to intuitively and vividly understand each technical feature and overall technical solution of this utility model, but they should not be construed as limiting the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. Furthermore, the various technical features in this invention can be combined interactively without contradicting each other.

[0022] In the construction of power distribution networks, cable terminals are commonly used to connect switches, transformers, and other devices to cables. Research has revealed that cable terminals are frequent points of failure. After prolonged operation, cable terminals are prone to overheating, loosening, and other malfunctions. These issues range from increasing power transmission losses and wasting electrical resources to causing damage to the cable terminals and leading to power outages. Therefore, to ensure the stable operation of the power distribution network, it is necessary to monitor the operating status of cable terminals. Currently, the main method for temperature measurement of cable terminals is to install wireless sensors on their surface to estimate the temperature of the internal conductors. The weakness of this technology is that it cannot accurately measure the actual temperature of the conductors inside the cable connector. Furthermore, when abnormal temperatures are detected, the internal structure of the cable terminal has often already been damaged, significantly impacting power transmission.

[0023] Existing pluggable terminals with internal cones generally include a stress cone and conductive contacts mounted on the stress cone. Research has found that the high-temperature location of the terminal is often located at the corresponding position of the conductive contacts. Therefore, this invention provides an internal cone wireless temperature measurement device that uses wireless temperature measurement technology to monitor the temperature of the conductive contacts in real time, thereby improving the safety of terminal use.

[0024] See Figures 1-5 This utility model provides an internal cone wireless temperature measurement device, including a stress cone 100. The stress cone 100 includes a through-cavity. A conductive contact 200 is provided on the upper side of the stress cone 100. The conductive contact 200 is generally cylindrical and includes a downward-opening cavity 210 that communicates with the inner cavity of the stress cone 100. A square mounting groove 220 is also provided on the lower outer peripheral wall of the conductive contact 200, communicating with the cavity 210. A wireless temperature measurement unit 300 is fixedly mounted in the mounting groove 220. The wireless temperature measurement unit 300 is also generally square, and its outer diameter is smaller than the inner diameter of the mounting groove 220. The wireless temperature measurement unit 300 is fixed to the conductive contact 200 by a clamp 400.

[0025] It is understood that in this embodiment, since the purchased wireless temperature measurement unit 300 is square, the shape of the mounting slot 220 is also adapted to be square. When the wireless temperature measurement unit 300 is circular, the mounting slot 220 is also adapted to be circular.

[0026] In use, the stripped cable core (metal conductive wire) is inserted upwards from the inner cavity of the stress cone 100 into the cavity 210 of the conductive contact 200, allowing the cable core to achieve a conductive connection with the conductive contact 200. Then, the conductive contact 200 becomes conductive with the conductor on the cover. Therefore, the conductive contact 200 serves as a transfer station for the power from the cable to the conductor on the cover, making it a potential source of high-temperature anomalies. Temperature monitoring of the conductive contact 200 is necessary. In this invention, a mounting groove 220 is carved into the lower outer periphery of the conductive contact 200, and a wireless temperature measuring unit 300 is inserted into the mounting groove 220. It is understood that the wireless temperature measuring unit 300 is a common, readily available, and commercially viable temperature measurement system in the prior art. For example, the wireless temperature measurement unit 300 includes a circuit board on which an inductive current generator, a temperature sensor, and a communication module are mounted. The inductive current generator draws electrical energy from the conductive contacts to power the electrical components on the circuit board. The temperature sensor directly senses the temperature of the conductive contacts 200 and transmits the temperature signal wirelessly via the communication module. It is understood that a wireless signal receiver and a temperature detector are also located nearby in this inner cone wireless temperature measurement device. The wireless signal receiver receives the signal transmitted from the communication module and transmits it to the temperature detector, which monitors the temperature of the conductive contacts 200 in real time. When an abnormality is detected, an alarm is issued promptly to alert personnel for follow-up action.

[0027] Since the wireless temperature measurement unit 300 is basically embedded in the mounting groove 220, and the mounting groove 220 is set on the peripheral wall, the conductive contact 200 can be guaranteed to have sufficient conductive area, so that the electrical energy of the cable core can be better transmitted to the conductor on the cover. Under the premise of satisfying the function of wireless temperature measurement, the risk of high temperature abnormality can be reduced.

[0028] As mentioned earlier, during use, it is necessary to ensure that the cable core and the conductive contact can conduct electricity as much as possible, reducing the resistance between them and mitigating the risk of abnormal high temperatures. Therefore, it is essential to ensure good conductivity between the cable core and the conductive contact. Further, as a preferred embodiment, the lower part of the conductive contact 200 is also provided with a locking screw hole 230, which communicates with the cavity 210. When a metal wire is inserted into the cavity of the conductive contact, tightening the locking screw into the locking screw hole allows for a tighter connection between the metal wire and the conductive contact, improving conductivity.

[0029] In addition, to improve the conductivity reliability between the metal wire and the conductive contact 200, the structure of the locking screw hole 230 has also been optimized in this invention. See also Figure 5 In this embodiment, the angle between the axis of the locking screw hole 230 and the axis of the conductive contact is α, where 95° < α < 110°. Preferably, α in this embodiment is 100°. Therefore, since the locking screw hole 230 has an upward tilt angle, and its opening is relatively downward tilted, this design makes installation easier. Because the working space below the terminal product is often larger during on-site construction, tilting the opening of the locking screw hole 230 downward provides more operating space, making it easier for workers to tighten the screws. Furthermore, because the screw is tilted upward, when the screw passes through the conductive contact 200 and abuts against the metal wire, the screw's tightening force provides an upward compressive force to the metal wire, resulting in a tighter connection between the metal wire and the conductive contact.

[0030] Additionally, see Figure 4 , Figure 5 There are a total of four locking screw holes 230, divided into two groups of two, arranged side by side, one above the other. The phase angle between the two groups of locking screw holes 230 is β, where 120° < β < 150°. Preferably, in this embodiment, β is 135°. By using two groups of staggered locking screw holes 230, the connection reliability between the metal wire and the conductive contact can be further improved.

[0031] As mentioned above, the wireless temperature measuring unit 300 is fixed to the conductive contact 200 by a clamp 400. Since the conductive contact 200 is cylindrical, to ensure a more secure mounting of the wireless temperature measuring unit 300, a locking groove 240 is provided at the lower part of the conductive contact 200, located on the back of the mounting groove 220. The locking groove 240 is simply a shallow cut on the outer peripheral wall of the conductive contact 200, leaving a flat surface on the back of the mounting groove 220. This increases the contact area between the clamp and the conductive contact 200, thus ensuring a more secure mounting of the wireless temperature measuring unit 300 and preventing accidental detachment. Furthermore, as a further improvement to the above technical solution, clearance notches 221 are provided on both sides of the mounting groove 220. These clearance notches 221 on both sides of the mounting groove 220 further enhance the secure mounting of the wireless temperature measuring unit.

[0032] As a further preferred embodiment, a load-bearing ring 500 is provided between the stress cone 100 and the conductive contact 200, and a signal transmission layer is provided in the load-bearing ring 500. The wireless signal of the wireless temperature measurement unit can be transmitted outward through the load-bearing ring 500, thereby improving the reliability of the wireless temperature measurement device.

[0033] As a further preferred embodiment, the upper part of the conductive contact 200 is also provided with an annular positioning groove 250, and a watchband finger 600 is fitted onto the positioning groove 250. By providing a positioning groove on the conductive contact, the installation of the watchband finger is made more secure, and by increasing the number of watchband fingers, the conductivity of the conductive contact can be improved. Furthermore, there are two sets of positioning grooves 250, both sets of which are located above the mounting groove 220.

[0034] As a further improvement to the above technical solution, the upper end of the cavity 210 of the conductive contact 200 is closed. That is, the cavity 210 does not extend upwards through the conductive contact. This maintains the integrity of the upper end of the conductive contact 200 and improves the conductivity of the conductive contact.

[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A wireless temperature measuring device with internal cone, comprising a stress cone, on which a conductive contact is provided, characterized in that: The conductive contact is cylindrical and includes a cavity that communicates with the inner cavity of the stress cone. The lower outer periphery of the conductive contact is also provided with a mounting groove that communicates with the cavity, and a wireless temperature measurement unit is provided in the mounting groove.

2. The inner cone wireless temperature measurement device of claim 1, wherein: The lower part of the conductive contact is also provided with a locking screw hole, which is connected to the cavity.

3. The inner cone wireless temperature measurement device of claim 2, wherein: The angle between the axis of the locking screw hole and the axis of the conductive contact is α, where 95° < α < 110°.

4. The inner cone wireless temperature measurement device of claim 2, wherein: There are two sets of locking screw holes, and the phase angle between the two sets of locking screw holes is β, where 120° < β < 150°.

5. The inner cone wireless temperature measurement device of claim 1, wherein: The lower part of the conductive contact is also provided with a locking groove, which is located on the back of the mounting groove.

6. The inner cone wireless temperature measurement device of claim 1, wherein: A load-bearing ring is also provided between the stress cone and the conductive contact, and a signal transmission layer is provided in the load-bearing ring.

7. The inner cone wireless temperature measurement device of claim 1, wherein: The upper part of the conductive contact is also provided with an annular positioning groove, and a watch chain finger is sleeved on the positioning groove.

8. The inner cone wireless temperature measurement device of claim 7, wherein: There are two sets of positioning slots, and both sets of positioning slots are located above the mounting slot.

9. The inner cone wireless temperature measurement device of claim 1, wherein: The mounting slot is also provided with clearance notches on both sides.

10. The internal cone wireless temperature measurement device of claim 1, wherein: The upper end of the cavity of the conductive contact is closed.

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