A protective cover for low-voltage terminal of transformer

Abstract

The present invention discloses a protective cover for a transformer low-voltage terminal, comprising a cover body and a temperature measuring device, wherein the cover body comprises a fixed portion and a movable portion, wherein the fixed portion is covered on the outside of the terminal, wherein a wire inlet is provided on the fixed portion, wherein the movable portion is hinged on the fixed portion and covered on the outside of the wire inlet, wherein a wiring channel is passed through the movable portion, wherein the wiring channel is arranged opposite to the wire inlet; wherein the detection end of the temperature measuring device is arranged opposite to the connection of the terminal, wherein the temperature measuring device comprises a communication module for transmitting temperature information. The present invention has the advantages of simple structure, convenient installation and wide application range, and can effectively avoid the problem of abnormal heating of the terminal, thereby improving operation and maintenance efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a protective cover for a low-voltage terminal of a transformer. Background Art

[0002] Transformers are essential power equipment in the current power grid. In order to prevent small animals from contacting the transformer terminals, insulating protective covers are usually installed on the transformer terminals. Generally, when current passes through a conductor, the conductor will heat up and produce a thermal effect. In actual work, the transformer terminals need to be connected to the wires. The connection of the terminals often produces abnormal heating problems. In addition, when encountering problems such as substandard construction quality, aging of the screws of the terminals, poor contact, and excessive load, the resistance of the connection of the terminals will increase, and the heating problem will become more serious. Moreover, since the current flowing through the low-voltage terminals of the transformer is larger, the heating of the terminals is particularly prominent. If they are in a high-temperature heating state for a long time, it is very easy to cause the terminals to burn out or even catch fire, causing the transformer to leak oil and damage the transformer to be unusable. Furthermore, the current protective covers are not uniform in specifications, the models do not match, the scope of application is narrow, and they do not work after installation, and the installation is relatively troublesome. Therefore, it is urgent to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a protective cover for a transformer low-voltage terminal in order to solve the above-mentioned problem.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: a protective cover for a low-voltage terminal of a transformer, comprising a cover body and a temperature measuring device, the cover body comprising a fixed part and a movable part, the fixed part is covered on the outside of the terminal, a wire inlet is provided on the fixed part, the movable part is hinged on the fixed part and covers the outside of the wire inlet, a wiring channel passes through the movable part, and the wiring channel is arranged opposite to the wire inlet; the detection end of the temperature measuring device is arranged opposite to the connection point of the terminal, and the temperature measuring device includes a communication module for transmitting temperature information.

[0005] Furthermore, the temperature measuring device also includes a temperature detector and a power supply module, and the temperature detector and the power supply module are electrically connected to the communication module respectively; the power supply module provides it with a stable power supply, and the communication module transmits the temperature information detected by the temperature detector in real time, thereby achieving the purpose of real-time monitoring of the temperature status of the terminal and effectively avoiding the problem of abnormal heating.

[0006] Furthermore, the power module includes a solar panel and a battery, the solar panel is connected to the top of the movable part, the solar panel is electrically connected to the battery, and the battery is electrically connected to the communication module; the solar panel converts light energy into electrical energy and stores it in the battery, providing a stable power supply for the temperature detector and the communication module, effectively ensuring the endurance of the temperature measuring device, without the need for an external power supply, and being more energy-saving and environmentally friendly.

[0007] Furthermore, a detection hole is provided on the movable part, and the detection hole is arranged opposite to the detection end of the temperature detector; a matching hole is provided on the fixed part, and the matching hole is arranged opposite to the connection of the terminal, and the matching hole and the detection hole are coaxially provided; under the action of the detection hole and the matching hole, the detection end of the temperature detector is directly aligned with the connection of the terminal, thereby improving the accuracy of temperature measurement.

[0008] Furthermore, a wire outlet is provided at the end of the wiring channel away from the wire inlet, and a plurality of limit bars are connected to the wire outlet, and the limit bars are arranged in an array at intervals so that the wire outlet is in a grid shape; the limit bars can be cut off and removed according to the actual thickness of the wire to change the diameter of the wire outlet, so that the wire can better adapt to the wire outlet, making the installation more secure, more regular and more beautiful.

[0009] Furthermore, the line inlet is connected to a flexible baffle that matches it; after installation, even if the size specifications of the terminal post are different, the flexible baffle can still fit the outer wall of the terminal post, making the application range wider and the installation more convenient.

[0010] Furthermore, a rotating hole is provided on the fixed part, and an elastic clamping shaft matched with the rotating hole is convexly provided on the movable part; the elastic clamping shaft is connected to the rotating hole, so that the movable part is hingedly matched with the fixed part, the structure is simple, and the connection is convenient; and it is easy to adjust the angle between the movable part and the fixed part, so as to adapt to different wiring scenarios and have a wider range of applications.

[0011] Furthermore, a limit block is protruding from the fixed part, and the limit block cooperates with the side stopper of the movable part to ensure the rotatable range of the movable part, so that the angle of the movable part can be easily adjusted.

[0012] Furthermore, a conical sleeve is provided at the bottom end of the fixing portion, the diameter of the conical sleeve gradually increases from top to bottom, a limiting edge is radially protruded at the bottom end of the conical sleeve, and the limiting edge extends toward the central axis of the conical sleeve; the conical sleeve can better adapt to the insulator on the terminal, making the connection more secure and stable.

[0013] Furthermore, the cover body is made of transparent PC material; the situation inside the cover body can be viewed more intuitively, which facilitates maintenance and improves maintenance efficiency.

[0014] The beneficial effects of the present invention are as follows: first, by arranging the fixed part cover on the outside of the terminal, a wire inlet is opened on the fixed part, and the movable part is covered on the outside of the wire inlet, so that the cover body completely covers the entire terminal, which can effectively protect the terminal from wind and rain, delay its aging process, extend its service life, and avoid the problem of abnormal heating caused by aging; and a wiring channel arranged opposite to the wire inlet runs through the movable part, which is convenient for wiring and assembly of the terminal; second, because the movable part is hinged on the fixed part, the movable part can rotate a certain angle relative to the fixed part, so as to adapt to different wiring scenarios, with a wider range of applications and more convenient installation; third, the detection end of the temperature measuring device and the connection point of the terminal are arranged relatively, through The temperature measuring device detects the temperature of the terminal connection in real time, and the communication module transmits the temperature information detected by the temperature measuring device, which can be transmitted to the control center or other control and monitoring devices in real time, so as to notify the maintenance personnel. When the temperature is too high, the temperature measuring device detects that the terminal exceeds the set temperature upper limit, and the maintenance personnel can receive this information at the first time, check and repair it at the first time, so as to avoid the terminal temperature from being too high, avoid causing more serious safety accidents, prevent equipment damage, improve maintenance efficiency, and effectively solve the technical problems in the prior art. In general, the present invention has the advantages of simple structure, easy installation and wide application range, and can effectively avoid the problem of abnormal heating of the terminal and improve operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is an exploded schematic diagram of the present invention;

[0017] Figure 3 It is a cutaway schematic diagram of the present invention;

[0018] Figure 4 It is an exploded schematic diagram of the fixing part in the present invention;

[0019] Figure 5 It is an exploded schematic diagram of the active part in the present invention;

[0020] Figure 6 It is a structural schematic diagram of the easily breakable connection part in the present invention.

[0021] The following are the descriptions of the reference numerals:

[0022] 1-cover; 11-fixed part; 111-inlet; 112-matching hole; 113-rotation hole; 114-limiting block; 115-conical sleeve; 116-limiting edge; 12-movable part; 121-wiring channel; 122-detection hole; 123-outlet; 124-limiting strip; 1241-breakable connection part; 125-elastic clamping shaft; 126-first clamping slot; 127-second clamping slot; 2-temperature measuring device; 21-temperature detector; 211-first buckle; 22-solar panel; 221-second buckle; 3-flexible baffle. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0025] Embodiment 1

[0026] like Figures 1 to 5 As shown, this embodiment provides a protective cover for a low-voltage terminal of a transformer, including a cover body 1 and a temperature measuring device 2. The cover body 1 includes a fixed portion 11 and a movable portion 12. The fixed portion 11 is covered on the outside of the terminal. A wire inlet 111 is provided on the fixed portion 11. The movable portion 12 is hinged on the fixed portion 11 and is covered on the outside of the wire inlet 111. A wiring channel 121 runs through the movable portion 12, and the wiring channel 121 is arranged opposite to the wire inlet 111. The detection end of the temperature measuring device 2 is arranged opposite to the connection of the terminal, and the temperature measuring device 2 includes a communication module for transmitting temperature information. The communication module preferably adopts wireless communication, which is convenient for connection and transmission of temperature information. The temperature information is mainly the temperature value detected by the temperature measuring device 2. Of course, the current time, the IP address of this protective cover and other information can also be added.

[0027] In actual work, the communication module will transmit the temperature information detected by the temperature measuring device 2 to the control center, the power grid control station, the monitoring station, the handheld control terminal or other control and monitoring devices, so that the maintenance personnel can understand the heating condition of the terminal in real time; the temperature upper limit can be set on the communication module, the temperature measuring device 2 or the control and monitoring device according to the actual situation. When the temperature value exceeds the set temperature upper limit, the control and monitoring device will alarm the maintenance personnel to remind the maintenance personnel to solve the problem of heating of the terminal more quickly and improve the operation and maintenance efficiency.

[0028] The temperature measuring device 2 also includes a temperature detector 21 and a power module. The temperature detector 21 and the power module are electrically connected to the communication module respectively. The power module includes a solar panel 22 and a battery. The solar panel 22 is connected to the top of the movable part 12. The solar panel 22 is electrically connected to the battery, and the battery is electrically connected to the communication module. The temperature detector 21 preferably adopts an infrared induction type to improve the detection accuracy and sensitivity, and further avoid the problem of abnormal heating of the terminal; the battery preferably adopts a lithium battery. The solar panel 22 arranged on the top can better correspond to the sunlight, ensure the conversion efficiency of light energy and the sufficiency of electric energy, so that the protective cover can continue to work normally, and further avoid the problem of heating of the terminal.

[0029] Preferably, reference Figure 2 As shown, the temperature detector 21 is connected to the side wall of the movable part 12, and at least one first buckle 211 is protruding from the bottom of the temperature detector 21, and a first card slot 126 corresponding to the first buckle 211 is provided on the side wall of the movable part 12; specifically, two first buckles 211 are provided in an array at intervals, and two corresponding first card slots 126 are also provided, which ensures convenient manufacturing and reliable connection. The two side walls of the movable part 12 are respectively provided with first card slots 126, and the temperature detector 21 can be installed on either side of the movable part 12 according to actual conditions, so as to better adapt to specific installation scenarios and make installation more convenient. In this way, the temperature detector 21 can be detachably connected to the movable part 12, which is convenient for assembly. Of course, other connection methods in the field can also be adopted, which will not be described here one by one.

[0030] Preferably, reference Figure 3 As shown, at least one second buckle 221 is convexly provided on the bottom of the solar panel 22, and a second slot 127 corresponding to the second buckle 221 is provided on the top of the movable part 12; specifically, four second buckles 221 are arranged in an array, and four corresponding second slots 127 are also provided, which ensures convenient manufacturing and reliable connection. In this way, the solar panel 22 can be detachably connected to the movable part 12, which is convenient for assembly. Of course, other connection methods in the art can also be adopted, which will not be described here one by one.

[0031] The movable part 12 is provided with a detection hole 122 , which is arranged opposite to the detection end of the temperature detector 21 ; the fixed part 11 is provided with a matching hole 112 , which is arranged opposite to the connection of the terminal, and the matching hole 112 and the detection hole 122 are coaxially arranged.

[0032] The end of the wiring channel 121 away from the inlet 111 is provided with an outlet 123, and a plurality of limit strips 124 are connected to the outlet 123, and the limit strips 124 are arranged in an array at intervals, so that the outlet 123 is in a grid shape. During actual wiring, the limit strips 124 can be cut and removed according to the thickness of the wire to change the caliber of the outlet 123, so that the wire can be better adapted to the outlet 123, more regular and beautiful, and the wire connection can be more secure, avoiding looseness and shaking, resulting in unreliable wiring. Of course, the limit strips 124 that have not been removed can play a certain role in limiting and shielding the outlet 123 to prevent impurities from entering the protective cover.

[0033] A flexible baffle 3 is connected to the inlet 111. Preferably, the flexible baffle 3 is made of soft silicone rubber material to ensure the insulation performance of the protective cover. Specifically, the top of the fixing portion 11 is set in an arc surface, the inlet 111 is opened on this arc surface, and the flexible baffle 3 is also set in an arc shape to match.

[0034] The fixed part 11 is provided with a rotation hole 113, and the movable part 12 is provided with an elastic clamping shaft 125 matched with the rotation hole 113. It is worth mentioning that the matching hole 112 is the rotation hole 113, and the detection hole 122 is coaxially arranged with the elastic clamping shaft 125, making the structure simpler and more compact.

[0035] A limit block 114 is convexly provided on the fixed portion 11, and the limit block 114 cooperates with the side stopper of the movable portion 12; when adjusting the angle of the movable portion 12 relative to the fixed portion 11, the movable portion 12 is rotated according to the actual wiring situation, and the elastic clamping shaft 125 is rotated relative to the rotating hole 113, thereby adjusting the angle of the movable portion 12; when the side of the movable portion 12 abuts against the limit block 114, it indicates that the movable portion 12 has rotated to the limit position.

[0036] A conical sleeve 115 is provided at the bottom end of the fixing portion 11, the diameter of the conical sleeve 115 gradually increases from top to bottom, and a limiting edge 116 is radially protruded from the bottom end of the conical sleeve 115, and the limiting edge 116 extends toward the central axis of the conical sleeve 115. As known in the art, an insulator is generally provided on the terminal post, and the conical sleeve 115 can clamp the insulator to make the connection more secure.

[0037] The cover body 1 is made of transparent PC material.

[0038] Preferably, reference Figure 4 and Figure 5As shown, the fixed part 11 includes a first shell and a second shell that are clamped together, and the first shell and the second shell can also be connected by screws or other connecting parts; similarly, the movable part 12 includes a left shell and a right shell that are clamped together, and the left shell and the right shell can also be connected by screws or other connecting parts; it is convenient to manufacture the entire cover body 1 and the connection is more convenient.

[0039] The specific working principle of the present invention is as follows: it is only necessary to connect and install the cover body 1 corresponding to the terminal, the terminal is accommodated in the fixed part 11, the wire passes through the wire inlet 1111 and the wiring channel 121 in turn, and finally passes through the wire outlet 123, and adjusts the angle of the movable part 12 according to the specific wiring situation of the wire, so as to complete the assembly of the protective cover; the temperature detector 21 detects the temperature of the connection of the terminal in real time through the detection hole 122 and the matching hole 112, and the communication module will transmit the temperature information detected by the temperature detector 21 to the control center, the power grid control station, the monitoring station, the handheld control terminal or other control and monitoring devices.

[0040] Embodiment 2

[0041] refer to Figure 6 As shown, compared with the first embodiment, the present embodiment has breakable connection parts 1241 at the connection places with the outlet 123 at both ends of the limit strip 124, respectively. When it is necessary to remove the limit strip 124, the operator only needs to break it with force, and the limit strip 124 will be disconnected and separated at the breakable connection part 1241, which is simple to operate and easy to install. The breakable connection part 1241 can refer to the structural principle of the connection part of the mineral water bottle cap, which will not be described in detail here.

[0042] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may be subject to various changes and improvements, which fall within the scope of the invention to be protected. The scope of the invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A protective cover for a transformer low-voltage terminal, characterized in that: The invention comprises a cover body (1) and a temperature measuring device (2), wherein the cover body (1) comprises a fixed part (11) and a movable part (12), wherein the fixed part (11) is arranged to cover the outside of the terminal, and a wire inlet (111) is provided on the fixed part (11), and the movable part (12) is hingedly connected to the fixed part (11) and is arranged to cover the outside of the wire inlet (111), and a wire routing channel (121) runs through the movable part (12), and the wire routing channel (121) is arranged opposite to the wire inlet (111); The detection end of the temperature measuring device (2) is arranged opposite to the connection point of the terminal, and the temperature measuring device (2) comprises a communication module for transmitting temperature information; The temperature measuring device (2) further comprises a temperature detector (21) and a power module, wherein the temperature detector (21) and the power module are electrically connected to the communication module respectively; The movable part (12) is provided with a detection hole (122), and the detection hole (122) is arranged opposite to the detection end of the temperature detector (21); the fixed part (11) is provided with a matching hole (112), and the matching hole (112) is arranged opposite to the connection point of the terminal, and the matching hole (112) and the detection hole (122) are coaxially arranged.

2. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: The power module comprises a solar panel (22) and a storage battery, wherein the solar panel (22) is connected to the top of the movable part (12), the solar panel (22) is electrically connected to the storage battery, and the storage battery is electrically connected to the communication module.

3. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: The end of the wiring channel (121) away from the wire inlet (111) is provided with a wire outlet (123), and a plurality of limit bars (124) are connected to the wire outlet (123), and the plurality of limit bars (124) are arranged in an array at intervals, so that the wire outlet (123) is in a grid shape.

4. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: The line inlet (111) is connected to a flexible baffle (3) adapted thereto.

5. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: The fixed portion (11) is provided with a rotation hole (113), and the movable portion (12) is provided with an elastic clamping shaft (125) adapted to the rotation hole (113).

6. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: A limiting block (114) is protrudingly provided on the fixed portion (11), and the limiting block (114) cooperates with a side stopper of the movable portion (12).

7. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: A conical sleeve (115) is provided at the bottom end of the fixing portion (11), the diameter of the conical sleeve (115) gradually increases from top to bottom, and a limiting edge (116) is radially protruded from the bottom end of the conical sleeve (115), and the limiting edge (116) is extended toward the central axis of the conical sleeve (115).

8. The protective cover for a transformer low voltage terminal according to claim 1, characterized in that: The cover body (1) is made of transparent PC material.

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