Safety high-voltage isolating switch with passive temperature measurement and early warning function

Abstract

The application relates to the technical field of disconnectors and discloses a safe high-voltage disconnector with passive temperature measurement and early warning, which comprises a switch main body, a plurality of wiring terminals located on the two sides of the switch main body and contacts connected with the wiring terminals, a temperature measuring piece is detachably arranged on one side of the wiring terminals on the switch main body, the temperature measuring piece comprises a temperature measuring cavity formed on the surface of the switch main body and a through temperature measuring column which is limitedly clamped through the temperature measuring cavity and the switch main body, a three-color warning light is arranged at the top of the through temperature measuring column, a side connection terminal which is used in cooperation with the switch main body is arranged on the side surface of the through temperature measuring column, and a temperature measuring probe is arranged at the lower end of the through temperature measuring column. The high-voltage disconnector has the functions of passive self-powered temperature measurement and early warning, can simultaneously perform temperature measurement and early warning on the switch whole body and the connecting terminals, can perform partitioned and hierarchical accurate temperature measurement on the connecting terminals, and can improve temperature measurement accuracy and safety.

Description

Technical Field

[0001] This invention relates to the field of disconnector technology, specifically a safety high-voltage disconnector with passive temperature monitoring and early warning. Background Technology

[0002] High-voltage disconnect switches are crucial switching devices in power systems for achieving electrical isolation. They are primarily used to open and close circuits under no-load conditions, creating a visible air-insulated break to ensure the safety of personnel and the system during equipment maintenance. These devices typically consist of a conductive knife switch, an insulating support, an operating mechanism, and a mounting base. Depending on the installation environment, they can be classified as indoor or outdoor types. They are widely used in substations and distribution networks of various voltage levels, performing functions such as power isolation, busbar switching, and opening and closing low-current circuits.

[0003] Currently, during long-term operation, high-voltage disconnecting switches are prone to increased contact resistance at the contacts and terminals due to oxidation and corrosion, mechanical wear, contamination of contact surfaces, loose fasteners, and frequent operation. When a large current passes through, Joule heating occurs at the contact points, leading to localized overheating. If overheating is not detected in time, it can further cause contact surface oxidation, insulation material aging, contact welding, and short circuits, affecting the safe operation of the power grid. Existing methods for temperature detection in high-voltage disconnecting switches include: manual periodic use of infrared thermometers to measure temperature through cabinets or obstructions; attaching sensors to the contacts and using fiber optic temperature measurement when the switch is closed (vibrations during opening and closing can easily break the fiber optic cable); and using batteries to power a wireless temperature measurement structure, with contact temperature detection performed through periodic power supply replacements. None of these methods can meet the requirements for long-term, reliable temperature monitoring and early warning in high-voltage disconnecting switches. Therefore, it is necessary to design a safety-type high-voltage disconnecting switch with passive temperature monitoring and early warning. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a safety high-voltage disconnect switch with passive temperature monitoring and early warning, which has the advantages of passive self-powered temperature early warning and zoned hierarchical detection, solving the problems of untimely temperature measurement, easy damage to the detector, and frequent battery maintenance.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A safety high-voltage disconnect switch with passive temperature measurement and early warning includes a switch body, multiple terminals located on both sides of the switch body, and contacts connected to the terminals. A temperature measuring element is detachably mounted on one side of the switch body near the terminals. The temperature measuring element includes a temperature measuring cavity formed on the surface of the switch body and a through-temperature measuring column that penetrates the temperature measuring cavity and is locked to the switch body. A three-color warning light is provided at the top of the through-temperature measuring column, and a side terminal for use with the switch body is provided on the side of the through-temperature measuring column. A temperature probe is provided at the lower end of the through-temperature measuring column, and a heat-conducting component opposite to the temperature probe is provided at the lower end of the temperature measuring cavity for passive temperature measurement and early warning inside the switch.

[0006] Preferably, the output end of the terminal block is provided with an access component that penetrates through the switch body, the input end of the contact is provided with an embedding component, and the embedding component and the access component are detachably connected. The end of the access component near the switch body is sealed with a temperature-conducting cavity, which is filled with a heat-conducting liquid. A temperature probe extends through one side of the temperature-conducting cavity for passive temperature measurement and early warning of the switch terminal.

[0007] Preferably, the access component includes an access base that is embedded in the switch body. The access base has an access groove at the outer end of the switch body, and a snap-in end is coaxially provided in the access groove for sufficient heat conduction of the terminal.

[0008] Preferably, the embedding assembly includes an embedding seat that snaps into the access slot, and a mating end that snaps into the middle of the embedding seat is coaxially provided with a mating end that snaps into the insertion end. A heat-conducting sleeve is fitted on the end of the embedding seat away from the access assembly. A shrink sleeve is threaded into the heat-conducting sleeve, and the contact is connected to the mating end after passing through the heat-conducting sleeve using the shrink sleeve, for heat-conducting connection between the contact and the access assembly.

[0009] Preferably, both the heat-conducting sleeve and the shrink sleeve are made of insulating and heat-conducting materials. The shrink sleeve has an expansion opening at one end away from the heat-conducting sleeve, and a locking tab is provided at the other end of the shrink sleeve. The locking tabs are staggered on opposite sides for fastening the shrink sleeve to the heat-conducting sleeve and the contact.

[0010] Preferably, a plurality of balls are movably arranged on the periphery of one end of the access seat near the embedding component, and the same locking sleeve is fitted around the balls. A spring is fitted between the locking sleeve and the access seat, and the locking sleeve slides on the access seat via the spring. A damping block is provided on the inner side of the locking sleeve for limiting the connection between the access seat and the embedding seat.

[0011] Preferably, a locking part is provided on the upper side of the through-temperature measuring column, and a heat-conducting frame is provided flush with the lower end of the through-temperature measuring column. The heat-conducting component includes a heat-absorbing sheet fixed at the lower end of the temperature measuring cavity, and a gasket is provided around the heat-absorbing sheet. A heat-conducting cover is provided at the lower end of the switch body. Through holes are provided at both ends of the heat-conducting cover. Multiple arrayed heat-conducting wave plates are provided on the inner side of the heat-conducting cover, and the heat-conducting wave plates are attached to the heat-absorbing sheet for the safety protection of the switch.

[0012] Preferably, the heat-conducting frame is provided with a plurality of damping pads on its periphery, and a buffer portion is provided at the end of the damping pad near the temperature probe for structural buffering of the temperature measuring element.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a safe high-voltage disconnect switch with passive temperature monitoring and early warning, which has the following advantages: This high-voltage disconnect switch, by incorporating a temperature sensor on its main body, facilitates timely monitoring of the switch's overall temperature. This eliminates the need for an external power supply and a cumbersome internal battery structure, avoiding the burden of tedious testing, low accuracy, and regular power supply replacements. The detachable connection between the temperature sensor and the switch body enhances maintenance convenience. The close fit between the temperature probe and the heat-conducting components allows for real-time monitoring of the switch's overall temperature. Side terminals and a three-color warning light provide timely feedback, emitting different colored warning lights. Remote online monitoring is also possible, providing a dual warning mechanism that increases the timeliness, accuracy, and continuity of temperature monitoring while reducing maintenance frequency.

[0014] This high-voltage disconnect switch, through the structural design of the components connected to the terminals and the embedded components on the contacts, facilitates the connection between the disconnect switch and external equipment while adding a temperature measurement structure between the two structures. The use of a heat-conducting cavity and heat-conducting fluid ensures sufficient and uniform heat collection, facilitating temperature probes to detect the temperature of the disconnect switch terminals. This increases the temperature measurement path for temperature warning, improves sensitivity, reduces the blind zone of a single temperature measurement point, and ensures the comprehensiveness and accuracy of temperature monitoring across the entire disconnect switch area.

[0015] 3. This high-voltage disconnect switch, through the arrangement of heat-absorbing plates, heat-conducting covers, and heat-conducting wave plates in the heat-conducting components, facilitates timely heat conduction of the entire disconnect switch and also allows for timely external heat transfer, enabling timely temperature measurement and early warning by the temperature sensing element and assisting in the synchronous heat dissipation of the disconnect switch. At the same time, the coordinated limiting and locking of the ball bearings, locking sleeves, springs, and damping blocks can effectively offset the vibration and impact generated by the opening and closing operations of the disconnect switch. Furthermore, the damping pads and buffer sections provide elastic support for the temperature sensing probe, improving the long-term operation of the equipment under complex working conditions, increasing reliability and maintenance-free performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is an exploded view of the overall structure of the present invention.

[0018] Figure 3 This is a cross-sectional view of the temperature measuring element and heat conduction component on the switch body in this invention.

[0019] Figure 4 This is a schematic diagram of the temperature measuring element in this invention.

[0020] Figure 5 This is an exploded view of the structure of the access component, the insertion component, the wiring terminal, and the contact in this invention.

[0021] Figure 6 This is a cross-sectional view of the connection structure between the access component and the embedding component in this invention.

[0022] Figure 7 This is a cross-sectional view of the internal structure of the access component in this invention.

[0023] Figure 8 This is an exploded view of the structure of the interlocking component in this invention.

[0024] In the diagram: 100, switch body; 101, terminal block; 102, contact; 200, temperature measuring element; 201, temperature measuring chamber; 202, through-feed temperature measuring column; 203, three-color warning light; 204, side terminal; 205, locking part; 206, temperature probe; 207, heat-conducting frame; 208, damping pad; 209, buffer part; 300, heat-conducting assembly; 301, heat-absorbing sheet; 302, gasket; 303, heat-conducting cover; 304 305. Through hole; 406. Heat-conducting wave plate; 407. Access component; 408. Access base; 409. Access groove; 4000. Snap-in end; 4001. Temperature-conducting cavity; 401. Temperature probe; 402. Ball bearing; 403. Spring; 404. Locking sleeve; 405. Damping block; 506. Embedding component; 507. Embedding base; 508. Butt joint end; 509. Heat-conducting sleeve; 500. Shrink sleeve; 500. Expansion port; 501. Locking plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0027] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Please see Figure 1-8 This embodiment provides a safety high-voltage disconnect switch with passive temperature monitoring and early warning. The overall structure includes a switch body 100, terminals 101, contacts 102, a temperature sensing element 200, a heat-conducting component 300, an access component 400, and an embedding component 500. By specifically detecting the temperature of the main body and terminals 101 during the operation of the high-voltage disconnect switch, passive temperature detection and fault early warning are achieved throughout the process. This improves upon existing disconnect switch detection methods such as manual temperature measurement, fiber optic temperature measurement, and battery-powered temperature measurement, increasing the timeliness and accuracy of temperature measurement and solving the defects of easy damage and frequent maintenance of the temperature sensing structure.

[0030] First, multiple terminals 101 are provided on both sides of the switch body 100. Each terminal 101 is connected to a contact 102 on its outer side. The relative connection of the two structures forms a conductive path for the high-voltage disconnect switch. Then, a temperature measuring element 200 is detachably installed on one side of the terminal 101 on the switch body 100 to measure the temperature of the disconnect switch body. In some embodiments, the temperature measuring element 200 can have a temperature measuring cavity 201 formed on the surface of the switch body 100. At the same time, a through temperature measuring column 202 is provided through the temperature measuring cavity 201. After the through temperature measuring column 202 enters the temperature measuring cavity 201, it forms a limiting snap-fit ​​engagement with the switch body 100, connecting the temperature measuring element 200 to the disconnect switch for use. The temperature measuring column 202 is equipped with a three-color warning light 203 fixedly installed at its top. A side terminal 204, matching the switch body 100, is mounted on the side of the temperature measuring column 202. A temperature probe 206 is integrated at the lower end of the temperature measuring column 202. A heat-conducting component 300, directly opposite the temperature probe 206, is mounted at the lower end of the temperature measuring cavity 201. When the switch body 100 is in use, the heat-conducting component 300 collects the overall temperature of the switch body 100. The temperature probe 206 receives heat from the heat-conducting component 300, allowing it to collect internal temperature data in real time. This temperature signal is then transmitted to an external monitoring system via the side terminal 204, and simultaneously to the three-color warning light 203. The three-color warning light 203 emits different colored (e.g., red, yellow, green) warning signals according to the temperature range, facilitating staff monitoring the temperature of the isolating switch. The entire process requires no external power supply or battery power, achieving a passive temperature measurement and warning function. Meanwhile, the limit latching setting that runs through the temperature measuring column 202 and the switch body 100 facilitates independent maintenance and replacement in the future.

[0031] When power is supplied to the temperature sensing element 200 of the switch body 100, the core principle of passive temperature detection in existing disconnect switches is utilized. Electromagnetic induction technology is used to obtain working power from the high-voltage line current. The three-color warning light 203 can emit different colored lights according to the detection data of the temperature probe 206, providing an early warning of the disconnect switch's temperature status to external personnel. Furthermore, through the side terminal 204, combined with the disconnect switch's wireless communication technology, real-time temperature data can be sent to the monitoring backend, facilitating remote temperature monitoring and continuous temperature monitoring and warning for staff. At the same time, the direct alignment of the heat-conducting component 300 and the temperature probe 206 maximizes the accuracy of internal temperature acquisition, enabling the immediate detection of local overheating anomalies and preventing grid faults such as contact 102 oxidation, insulation aging, and short circuits caused by untimely temperature detection. This effectively improves the safety and stability of the high-voltage disconnect switch operation.

[0032] During the use of the disconnecting switch, heat is generated at the connection point between the disconnecting terminal 101 and the contact 102, which affects the safety of the disconnecting switch. To address this, an access component 400 that penetrates the switch body 100 can be installed at the output end of the terminal 101, and an embedded component 500 can be installed at the input end of the contact 102. The embedded component 500 and the access component 400 can then be fixed together using a detachable connection method to increase the temperature measurement structure of the external terminal of the disconnecting switch. All of these structures are made of high-temperature resistant insulating materials. First, a heat-conducting cavity 404 is sealed and formed at one end of the access component 400 near the switch body 100. Then, the heat-conducting cavity 404 is completely filled with a heat-conducting liquid (such as deionized water, mineral oil, synthetic oil, etc.). A temperature probe 405 is inserted through one side of the heat-conducting cavity 404. The temperature probe 405 works on the same principle as the temperature measuring probe 206, which is a passive temperature measurement technology. The heat generated by the terminal 101 during operation is absorbed by the heat-conducting liquid in the heat-conducting cavity 404. Then, the temperature detection technology of the sensor is applied to detect the working temperature of the access component 400. Subsequently, the detected temperature data is transmitted to the detection backend and the three-color warning light 203, and the passive temperature measurement and early warning of the terminal 101 are performed simultaneously.

[0033] During the conductive operation of the equipment, the connection point between the terminal 101 and the contact 102 is the main heat-generating area. The heat generated in this area can be quickly conducted to the interior of the temperature-conducting cavity 404 through the access component 400. The heat-conducting fluid in the temperature-conducting cavity 404 has excellent thermal conductivity, which can evenly and quickly transfer the heat from the connection point between the terminal 101 and the contact 102 to the temperature probe 405 immersed in the temperature-conducting cavity 404, reducing the temperature measurement blind zone. The temperature probe 405 collects the temperature data of the terminal connection point in real time. Combined with the overall early warning structure of the temperature measuring element 200, it realizes targeted passive temperature measurement and early warning of the connection point of the switch terminal. Furthermore, the detachable component structure facilitates the disassembly, assembly, maintenance, and troubleshooting of the connection point, improving the equipment's all-area temperature measurement and early warning capabilities and increasing the comprehensiveness of the early warning.

[0034] It is worth noting that in some embodiments, when the access component 400 is structurally configured, the access component 400 is embedded in the switch body 100 using an access base 401. An access groove 402 is then formed on the outer end of the access base 401 at the switch body 100, and a snap-in end 403 is coaxially fixed inside the access groove 402. During the assembly of the disconnecting switch, the access base 401 is integrally embedded and fixed to the switch body 100, increasing structural stability. The access groove 402 provides precise docking and installation space for the embedded component 500. Simultaneously, the snap-in end 403, coaxially positioned in the access groove 402 to align and snap into the embedded component 500, provides a structural basis for the connection between the contact 102 and the access component 400. Meanwhile, the insertion assembly 500 includes an insertion base 501 that can be snapped into the access slot 402. A mating end 502 is coaxially disposed in the middle of the insertion base 501. The insertion base 501 and the access slot 402 are through-hole, and the mating end 502 and the snap-in end 403 are correspondingly snapped into each other, facilitating the connection between the insertion assembly 500 and the access assembly 400. Furthermore, a heat-conducting sleeve 503 can be fitted onto the outer side of the end of the insertion base 501 furthest from the access assembly 400. A threaded shrink sleeve 504 is provided inside the heat-conducting sleeve 503 for installation with the contact 102. During equipment assembly, the shrink sleeve 504 is first placed over the contact 102. Then, the contact 102 and the shrink sleeve 504 are passed through the heat-conducting sleeve 503. The contact 102 is locked in place by screwing the shrink sleeve 504. Next, the insert 501 is inserted into the access slot 402, ensuring precise engagement between the mating end 502 and the insertion end 403. This establishes a stable conductive connection between the contact 102 and the access component 400. Simultaneously, the heat-conducting sleeve 503 and the shrink sleeve 504 rapidly conduct the heat generated by the contact 102 to the insert 501, and then to the temperature-conducting cavity 404 of the access component 400, ensuring stable temperature measurement of the contact 102. This design enhances the disassembly and assembly capabilities of the insert component 500 and its stable fixation to the access component 400. The integrated heat-conducting structure facilitates efficient heat conduction from the heating area of ​​the contact 102 to the temperature-conducting cavity 404, preventing heat accumulation and improving the comprehensiveness and accuracy of temperature measurement.

[0035] Meanwhile, the structural design of the access component 400 and the embedding component 500 increases the tightness of the connection between the contact 102 and the terminal 101, reduces the gap between the contact surfaces, lowers the contact resistance, and ensures that heat can be transferred quickly and evenly between the access base 401 and the embedding component 500, providing a structural basis for subsequent accurate temperature measurement.

[0036] In some embodiments, the shrink sleeve 504 can be made of insulating and thermally conductive material together with the heat-conducting sleeve 503. An expansion opening 505 is provided at the end of the shrink sleeve 504 away from the heat-conducting sleeve 503, and locking pieces 506 are staggered on opposite sides of one end of the expansion opening 505. During the equipment assembly and locking process, when the shrink sleeve 504 is screwed into the heat-conducting sleeve 503, the expansion opening 505 can adapt to the internal structure of the heat-conducting sleeve 503 to achieve a smooth fit. As the screwing depth increases, the locking pieces 506 are compressed under force and make frictional contact with the outer wall of the contact 102, thus completing the tight locking and fixing of the shrink sleeve 504 and the contact 102. At the same time, the insulating and thermally conductive material can stably conduct the heat generated by the operation of the contact 102 while ensuring electrical insulation safety, avoiding electrical interference with the operation of the temperature measuring structure.

[0037] In some embodiments, when connecting the access component 400 and the insertion component 500, a clamping structure can be provided on the outer end of the access seat 401 to increase the connection strength between the two structures. First, multiple balls 406 are movably assembled on the periphery of the end of the access seat 401 near the insertion component 500. A locking sleeve 408 is fitted around the outside of the multiple balls 406. Then, a spring 407 is fitted between the access seat 401 and the locking sleeve 408. The two ends of the spring 407 are fixed to the access seat 401 and the locking sleeve 408 respectively, so that the locking sleeve 408 can slide axially along the access seat 401 through the extension and retraction of the spring 407, thereby adjusting the position of the locking sleeve 408. When the access base 401 is connected to the embedding base 501, pulling the locking sleeve 408 compresses the spring 407, causing the locking sleeve 408 to release multiple balls 406, allowing the embedding assembly 500 to be inserted. After installation, releasing the locking sleeve 408 causes the spring 407 to return to its original position, pressing against the outside of the multiple balls 406, causing the multiple balls 406 to simultaneously press against the embedding base 501, thus restricting the position of the two structures. Simultaneously, a damping block 409 can be fixedly mounted inside the locking sleeve 408. Through the clamping and tightening of the inner damping block 409 with the outer wall of the embedding base 501, the two structures can fit tightly together, increasing the sliding limiting effect of the balls 406 and achieving precise positioning and locking of the access base 401 and the embedding base 501, effectively counteracting structural loosening caused by equipment vibration.

[0038] In some embodiments, the top of the through-temperature measuring column 202 can be configured as an inwardly tapering locking part 205, which fits against the cavity wall of the temperature measuring chamber 201 to increase the snap-fit ​​guidance and firmness. Next, a heat-conducting frame 207 can be installed flush with the lower end of the through-temperature measuring column 202. The heat-conducting frame 207 has a hollow structure, and a damping pad 208 is used on its periphery to increase its buffer structure. In order to adapt to the structure of the temperature measuring probe 206, the damping pad 208 can be configured as a buffer part 209 at one end near the temperature measuring probe 206 to increase adaptability. In actual operation, when the disconnecting switch vibrates during opening and closing operations, the damping pad 208 first absorbs the vibration energy from the heat-conducting frame 207 and converts it into internal energy for dissipation. The buffer part 209 provides elastic support for the temperature measuring probe 206, buffers external impact forces, and provides vibration damping for the temperature measuring probe 206, weakening the structural impact caused by vibration, preventing the temperature measuring probe 206 from shifting or being damaged, and ensuring the assembly accuracy and working stability of the temperature measuring structure.

[0039] Next, in the structural configuration of the heat-conducting component 300, the heat-conducting component 300 includes a heat-absorbing sheet 301 fixedly installed at the lower end of the temperature measuring cavity 201, a sealing gasket 302 assembled around the heat-absorbing sheet 301, a heat-conducting cover 303 fixedly assembled at the lower end of the switch body 100, through holes 304 opened at both ends of the heat-conducting cover 303 for air circulation and heat dissipation, and multiple sets of heat-conducting wave plates 305 arranged in an array inside the heat-conducting cover 303, and the top of the heat-conducting wave plates 305 is tightly attached to the heat-absorbing sheet 301 to facilitate the outward transfer of heat and allow the isolating switch to dissipate heat on its own. During operation, the heat generated inside the switch body 100 is transferred to the temperature probe 206 via the heat-absorbing sheet 301. Simultaneously, the heat is collected by the heat-conducting cover 303 and the heat-conducting wave plate 305. This rapidly reduces the heat in the disconnect switch body 100, allowing for heat flow. The heat-absorbing sheet 301 evenly transfers heat to the heat-conducting frame 207, ultimately conducting it to the temperature probe 206 for temperature acquisition. The gasket 302 ensures the sealing of the temperature measuring cavity 201, preventing external dirt and moisture from entering and affecting the temperature measurement accuracy and equipment insulation performance. The through hole 304 assists in heat dissipation, enabling simultaneous temperature measurement and heat dissipation. This increases the versatility of temperature measurement during disconnect switch operation, improves the sensitivity and accuracy of passive temperature measurement, facilitates rapid heat dissipation of the disconnect switch, prevents continuous heat accumulation, and avoids direct damage.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety high-voltage disconnect switch with passive temperature monitoring and early warning, comprising a switch body (100), a plurality of terminals (101) located on both sides of the switch body (100), and contacts (102) connected to the terminals (101), characterized in that: A temperature measuring element (200) is detachably installed on one side of the terminal block (101) on the switch body (100). The temperature measuring element (200) includes a temperature measuring cavity (201) opened on the surface of the switch body (100) and a through temperature measuring column (202) that penetrates the temperature measuring cavity (201) and is limited and snapped into the switch body (100). A three-color warning light (203) is provided on the top of the through temperature measuring column (202). A side terminal (204) that works with the switch body (100) is provided on the side of the through temperature measuring column (202). A temperature measuring probe (206) is provided at the lower end of the through temperature measuring column (202). A heat-conducting component (300) opposite to the temperature measuring probe (206) is provided at the lower end of the temperature measuring cavity (201) for passive temperature measurement and early warning inside the switch.

2. The high-voltage disconnect switch according to claim 1, characterized in that, The output end of the terminal block (101) is provided with an access component (400) that penetrates the switch body (100). The input end of the contact (102) is provided with an insertion component (500), and the insertion component (500) and the access component (400) are detachably connected. The end of the access component (400) near the switch body (100) is sealed with a temperature-conducting cavity (404), which is filled with a heat-conducting liquid. A temperature probe (405) is inserted through one side of the temperature-conducting cavity (404) for passive temperature measurement and early warning of the switch terminal.

3. The high-voltage disconnect switch according to claim 2, characterized in that, The access component (400) includes an access base (401) that is embedded in the switch body (100). The access base (401) has an access groove (402) at the outer end of the switch body (100). A snap-in end (403) is coaxially provided in the access groove (402) for sufficient heat conduction of the terminal.

4. The high-voltage disconnect switch according to claim 3, characterized in that, The insertion assembly (500) includes an insert (501) that engages with the access slot (402). The middle part of the insert (501) is coaxially provided with a mating end (502) that engages with the insertion end (403). A heat-conducting sleeve (503) is sleeved on one end of the insert (501) away from the access assembly (400). A shrink sleeve (504) is threaded into the heat-conducting sleeve (503). The contact (102) is connected to the mating end (502) after passing through the heat-conducting sleeve (503) using the shrink sleeve (504), for heat-conducting connection between the contact (102) and the access assembly (400).

5. The high-voltage disconnect switch according to claim 4, characterized in that, Both the heat-conducting sleeve (503) and the shrink sleeve (504) are made of insulating and heat-conducting materials. The shrink sleeve (504) has an expansion opening (505) at one end away from the heat-conducting sleeve (503), and a locking piece (506) is provided at the other end of the shrink sleeve (504). The locking pieces (506) are staggered on opposite sides with (507) for fastening the shrink sleeve (504) to the heat-conducting sleeve (503) and the contact (102).

6. The high-voltage disconnector according to claim 3, characterized in that, Multiple balls (406) are movably arranged on the periphery of one end of the access seat (401) near the insertion component (500). The same locking sleeve (408) is sleeved on the outside of the multiple balls (406), and a spring (407) is sleeved between the locking sleeve (408) and the access seat (401). The locking sleeve (408) slides on the access seat (401) through the spring (407). A damping block (409) is provided on the inner side of the locking sleeve (408) for limiting the connection between the access seat (401) and the insertion seat (501).

7. The high-voltage disconnect switch according to claim 1, characterized in that, A locking part (205) is provided on the upper side of the through-temperature measuring column (202), and a heat-conducting frame (207) is provided flush with the lower end of the through-temperature measuring column (202). The heat-conducting component (300) includes a heat-absorbing sheet (301) fixed at the lower end of the temperature measuring cavity (201). A gasket (302) is provided on the periphery of the heat-absorbing sheet (301). A heat-conducting cover (303) is provided at the lower end of the switch body (100). Through holes (304) are provided at both ends of the heat-conducting cover (303). Multiple arrayed heat-conducting wave plates (305) are provided on the inner side of the heat-conducting cover (303), and the heat-conducting wave plates (305) are attached to the heat-absorbing sheet (301) for the safety protection of the switch.

8. The high-voltage disconnect switch according to claim 7, characterized in that, The heat-conducting frame (207) is provided with a plurality of damping pads (208) on its periphery. The damping pads (208) are provided with a buffer part (209) at one end near the temperature probe (206) for structural buffering of the temperature measuring element (200).

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