Telescopic high-voltage disconnecting link shielding cover body device

Abstract

The invention relates to a telescopic high-voltage disconnecting link shielding cover body device, and belongs to the field of live working protection devices of power equipment. The device comprises a disconnecting link body and a telescopic cover body, and the telescopic cover body adopts a wrinkle structure to perform telescopic deformation along the extension direction of the disconnecting link body so as to adapt to disconnecting links of different sizes; the device further comprises a modularized insulating thermosensitive layer and a pressing type magnetic locking module. The modularized insulating thermosensitive layer comprises a plurality of groups of insulating units which are detachably connected, the dielectric strength of each unit corresponds to different voltage grades, an insulating thermosensitive color-changing layer is arranged at the side end of each insulating unit, and reminding is realized through thermosensitive induction color changing; the pressing type magnetic locking module comprises permanent magnet arrays and magnetic conductive plates which are evenly distributed on the edges of the side ends of the two attached insulation units, and magnetic adsorption and fixation are achieved through pressing. The device is simple in structure and high in adaptability, can effectively protect the high-voltage knife switch, and improves the operation safety of power equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of live working protection devices for power equipment, in particular to a telescopic high-voltage knife switch shielding cover device used in high-voltage power systems. BACKGROUND

[0002] As an important switching device in power systems, high-voltage knife switches are widely used in the control and protection of power systems. To ensure the safety of operating personnel and the normal operation of the equipment, high-voltage knife switches usually need to be equipped with appropriate insulation shielding devices. Currently, the common high-voltage knife switch insulation devices on the market mainly adopt fixed structure design. For example, the Chinese patent document with publication number CN205751981U discloses a high-voltage knife switch insulation device. This device is composed of two insulation half-cover bodies that can be mutually buckled together. Through the buckling part and the plug-in part, it can be disassembled to form an insulation cover body with an open bottom, thereby covering the high-voltage knife switch and achieving full insulation shielding of the live body.

[0003] With the development of power systems, the functional requirements for high-voltage knife switch insulation devices are constantly improving. CN116153702A discloses a transparent and visible high-temperature automatic shedding insulation sheath. The sheath is made of transparent insulation material, with a heat-sensitive color band on the outer surface and a high-temperature melting buckle. It can automatically shed under high temperature, improving safety. CN105405700B discloses a new type of power knife switch, which includes a knife switch body and an externally arranged protective cover. The protective cover is equipped with an infrared temperature sensor, a microcontroller, an alarm, and a wireless transmitter, enabling temperature monitoring and improving safety.

[0004] In terms of closed design, CN113363106A discloses a new type of high-voltage closed disconnecting switch. The switch includes a base, an insulator, and a first closed cavity and a second closed cavity arranged above the insulator, achieving a fully closed structure for dynamic devices without any live body exposed. CN106783338A discloses a knife switch that can be intelligently monitored. By setting an inner and outer layer structure and a spiral shock-absorbing spring, the knife switch has good waterproof and shock-absorbing performance, ensuring safe and stable operation of the equipment.

[0005] However, the high-voltage knife switch shielding cover in the prior art still has some technical problems: first, the existing high-voltage knife switch shielding cover is mostly of fixed structure, which cannot adapt to the size change of different models of knife switches, and different covers need to be customized for each model, which not only increases the operation and maintenance cost, but also brings inconvenience in storage and replacement. Secondly, the installation process of the traditional cover is complicated and inconvenient to operate, which affects the work efficiency. Thirdly, the insulation performance of the existing insulation cover is usually fixed design, which cannot flexibly configure the insulation strength according to different voltage levels, and lacks adaptability. Finally, most of the traditional covers lack environmental perception ability and cannot monitor the running environment in real time and dynamically adjust the protection strategy according to environmental changes, which is difficult to meet the demand of intelligent power grid.

[0006] Therefore, there is an urgent need for a high-voltage knife switch shielding cover device with scalable structure, convenient installation, configurable insulation performance and environmental monitoring function to solve the above technical problems. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a scalable high-voltage knife switch shielding cover device to solve the technical problems of the traditional high-voltage knife switch shielding cover, such as fixed structure that cannot adapt to the size change of different models of knife switches, complicated installation and inconvenient operation, inflexible insulation that cannot flexibly configure the insulation strength according to different voltage levels, and lack of environmental perception ability that cannot monitor the running environment in real time and dynamically adjust the protection strategy.

[0008] The technical solution adopted by the present application to solve the technical problem is to provide a scalable high-voltage knife switch shielding cover device, comprising a knife switch body and a scalable cover, wherein: the scalable cover adopts a pleated structure to extend and deform along the extension direction of the knife switch body to adapt to different sizes of knife switches.

[0009] Preferably, the scalable cover comprises a modular insulation thermosensitive layer, which comprises a plurality of groups of insulation units connected detachably, each unit having a dielectric strength corresponding to a different voltage level, and the plurality of groups of insulation units are provided with an insulation thermosensitive color-changing layer at the side ends, and the insulation thermosensitive color-changing layer realizes reminding through thermosensitive color change.

[0010] Further, the scalable cover comprises a press-type magnetic locking module, which comprises an array of permanent magnets and a magnetic conducting plate uniformly distributed at the side end edges of two abutting insulation units, respectively, and realizes magnetic attraction and fixation through pressing.

[0011] Optionally, the pleated structure of the scalable cover is a folding Accordion structure.

[0012] Preferably, the plurality of groups of insulation units comprise a knife switch installation slot insulation base, and the two side sections of the knife switch installation slot insulation base are respectively provided with a first wiring post insulation base and a second wiring post insulation base.

[0013] Further, the permanent magnet array of the pressing type magnetic locking module adopts a neodymium iron boron magnet, the surface magnetic field strength of which is greater than or equal to 480 mT, and the installation / dismounting operation time is less than or equal to 30 seconds.

[0014] Optionally, an environmental monitoring system is installed at the inner edge of the insulating base of the knife switch installation slot, including an integrated temperature and humidity sensor and a control unit, the control unit transmits based on sensor data, and the control unit is a single-chip microcomputer, which can implement Bluetooth transmission signals to a mobile phone APP.

[0015] Preferably, the insulating unit is a silicon rubber, EPDM or PTFE with high insulating strength and weather resistance.

[0016] Further, the insulating thermochromic layer adopts a color change response film of a fluoroplastic-based thermochromic composite material adhered to the side ends of multiple insulating units. Specifically, the fluoroplastic is combined with microencapsulated spiro compounds and aluminum oxide fillers, the fluoroplastic provides stability in a wide temperature range of -60℃ to 260℃ and high insulation; the microencapsulated spiro compounds or bisanthracene ketone organic pigments realize reversible color change response at 60℃ to 180℃; and the heat-conducting enhancer, aluminum oxide, accelerates temperature conduction to ensure real-time response.

[0017] Optionally, the knife switch body is installed in the insulating base of the knife switch installation slot, the lower end of the knife switch body is connected with an insulating column, and the lower end of the insulating column is provided with a base.

[0018] The beneficial effects of the present application are as follows: compared with the prior art, the present application can adapt to the size changes of different models of knife switches through the telescopic structure design, a single model can cover multiple scenes, and the inventory and replacement costs are reduced; combined with the modular insulating layer unit, the insulating strength can be flexibly configured according to different voltage grades, the user can quickly replace the insulating module according to the power grid grade, the customized insulation protection is realized, the insulating thermochromic layer realizes the warning and early warning functions through the thermosensitive color change, the pressing type magnetic locking module is adopted to realize the quick installation and dismounting operation of the cover body, the installation / dismounting does not require tools, and the time consumption is less than or equal to 30 seconds, which greatly improves the operation and maintenance efficiency; through the integrated environmental monitoring system, the real-time sensing of the operating environment and the dynamic adjustment of the protection strategy are realized, and the safety and intelligent level are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the telescopic knife switch shielding cover device of the present application.

[0020] Figure 2 It is a structural schematic view of the telescopic cover of the present application.

[0021] Figure 3 It is a structural schematic view of the telescopic knife switch shielding cover device of the present application from another perspective.

[0022] Figure 4 As Figure 3 Structure diagram of the device from another perspective.

[0023] Figure 5 Front view of the device.

[0024] Figure 6 Top view of the device.

[0025] Figure 7 Structure diagram of the installation base of the device.

[0026] Figure 8 Structure diagram of the press-type magnetic locking module.

[0027] In the figure: 1 - knife switch body, 2 - telescopic cover, 3 - modular insulation and heat-sensitive layer, 31 - insulation unit, 310 - knife switch installation slot insulation base, 311 - terminal post insulation base one, 312 - terminal post insulation base two, 32 - heat-sensitive color-changing insulation layer, 4 - press-type magnetic locking module, 41 - permanent magnet array, 42 - magnetic conducting plate, 5 - environmental monitoring system, 51 - temperature and humidity sensor, 52 - control unit, 6 - insulation column, 7 - base. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. EMBODIMENT

[0029] As Figures 1 to 8 shown, a telescopic high-voltage knife switch cover device includes a knife switch body 1 and a telescopic cover 2.

[0030] The telescopic cover 2 has a pleated structure, which is a folding Accordion structure, and can be deformed in extension and retraction along the extension direction of the knife switch body 1, so as to adapt to knife switches of different sizes. The telescopic cover 2 includes a modular insulation and heat-sensitive layer 3 and a press-type magnetic locking module 4.

[0031] The modular insulation thermal sensitive layer 3 comprises a plurality of detachably connected insulation units 31, each insulation unit 31 has a dielectric strength corresponding to different voltage levels, so that the device can be applied to high-voltage knife switches of different voltage levels. The side ends of the plurality of insulation units 31 are provided with an insulation thermal sensitive color-changing layer 32, which is made of a color-changing response film of a fluoroplastic-based thermal sensitive color-changing composite material and is bonded to the side ends of the plurality of insulation units 31. When the temperature abnormally rises, the insulation thermal sensitive color-changing layer 32 realizes the reminding function through thermal sensitive color change, so as to facilitate the workers to find the potential safety hazards in time.

[0032] The plurality of insulation units 31 comprises a knife switch mounting slot insulation base 310, and the two side sections of the knife switch mounting slot insulation base 310 are respectively provided with a terminal post insulation base one 311 and a terminal post insulation base two 312. The knife switch body 1 is mounted in the knife switch mounting slot insulation base 310, and the lower end of the knife switch body 1 is connected with an insulation column 6, and the lower end of the insulation column 6 is provided with a base 7, as shown in Figure 7 The whole device can be stably installed in the workplace through this structural design.

[0033] The insulation unit 31 is made of a material with high insulation strength and weather resistance, which can be silicone rubber, EPDM or PTFE. These materials have excellent electrical insulation performance and environmental adaptability, and can maintain stable insulation performance in various harsh environments.

[0034] The pressing type magnetic locking module 4 comprises a permanent magnet array 41 and a magnetic conducting plate 42 which are respectively arranged on the side end edges of the two abutting insulation units 31 and are uniformly distributed, as shown in Figure 8 The permanent magnet array 41 is made of a neodymium-iron-boron magnet, and the surface magnetic field strength thereof is ≥480mT. The magnetic force is adsorbed and fixed by pressing, so as to ensure the close abutment between the insulation units 31 and prevent high-voltage arc penetration. This magnetic locking design facilitates the rapid installation and disassembly of the device, and improves the work efficiency and safety.

[0035] The environmental monitoring system 5 is installed at the inner edge of the knife switch mounting slot insulation base 310, and the environmental monitoring system 5 comprises an integrated temperature and humidity sensor 51 and a control unit 52. The integrated temperature and humidity sensor 51 monitors the temperature and humidity changes inside the device in real time, and the control unit 52 transmits the sensor data. When the environmental parameters exceed the preset range, the control unit 52 will send an alarm signal to remind the workers to take corresponding measures.

[0036] In actual use, the working principle of the telescopic high-voltage knife switch shielding cover device is as follows: first, the knife switch body 1 is installed in the knife switch installation slot insulating base 310, then the length of the telescopic cover 2 is adjusted according to the actual size of the knife switch. After the adjustment is completed, the adjacent insulating units 31 are firmly locked by the press-type magnetic locking module 4. The environmental monitoring system 5 continuously monitors the internal environmental parameters of the device, and the insulating thermal sensitive color changing layer 32 visually prompts the temperature anomaly.

[0037] The telescopic high-voltage knife switch shielding cover device solves the problem that the traditional fixed-size cover cannot adapt to different specifications of the knife switch through the modular design and telescopic structure. Through the cooperation of the insulating thermal sensitive color changing layer 32 and the environmental monitoring system 5, real-time monitoring of the running state of the device is realized. The press-type magnetic locking module 4 greatly improves the installation convenience and sealing performance of the device. The overall design takes into account safety, adaptability and convenience, and provides effective protection for the safe operation of high-voltage power equipment.

[0038] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] It should be noted that in the present application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0040] The foregoing is considered as illustrative of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and it is intended to embody these modifications and changes into the scope of the application insofar as they do not depart from the spirit and scope of the claims. It is therefore intended that the application not be limited to the described embodiments, but that it include all such modifications and alterations in the scope of the present application. Accordingly, the application is to be considered as limited only by the scope of the appended claims.

Claims

1. A retractable high-voltage knife switch shielding cover device, comprising a knife switch body (1); characterized in that: A retractable cover (2), the pleated structure of which is retractable and deformable along the extension direction of the knife switch body (1) to adapt to knife switches of different sizes; It includes: A modular insulating heat-sensitive layer (3) comprises a plurality of detachably connected insulating units (31), wherein the dielectric strength of each unit corresponds to a different voltage level, and the side ends of the plurality of insulating units (31) are provided with insulating heat-sensitive color-changing layers (32), and the insulating heat-sensitive color-changing layers (32) provide reminders through heat-sensitive strain color; The press-type magnetic locking module (4) comprises a permanent magnet array (41) and a magnetic conductive plate (42) evenly distributed on the side edges of two fitted insulating units (31), and achieves magnetic adsorption and fixation by pressing.

2. The retractable high-voltage knife switch shielding cover device according to claim 1 is characterized in that: The pleated structure of the telescopic cover (2) is a folding accordion structure.

3. The retractable high-voltage knife switch shielding cover device according to claim 1 is characterized in that: The multiple groups of insulating units (31) include a knife switch mounting slot insulating base (310), and two side sections of the knife switch mounting slot insulating base (310) are respectively provided with a terminal insulating base 1 (311) and a terminal insulating base 2 (312).

4. The retractable high-voltage knife switch shielding cover device according to claim 1, characterized in that: The permanent magnet array (21) of the push-type magnetic locking module (2) adopts neodymium iron boron magnets, and its surface magnetic field strength is ≥480mT.

5. The retractable high-voltage knife switch shielding cover device according to claim 3 is characterized in that: An environmental monitoring system (5) is installed at the inner edge of the knife switch installation slot insulating base (310), comprising an integrated temperature and humidity sensor (51) and a control unit (52), wherein the control unit (52) transmits data based on the sensor data.

6. The retractable high-voltage knife switch shielding cover device according to claim 3 is characterized in that: The insulating unit (31) is made of silicone rubber, EPDM or PTFE with high insulation strength and weather resistance.

7. The retractable high-voltage knife switch shielding cover device according to claim 6, characterized in that: described The insulating thermochromic layer (32) is made of a fluoroplastic-based thermochromic composite material and is bonded to the side ends of multiple groups of insulating units (31).

8. The retractable high-voltage knife switch shielding cover device according to claim 3 is characterized in that: The knife switch body (1) is installed in the knife switch installation groove insulating base (310), the lower end of the knife switch body (1) is connected to an insulating column (6), and the lower end of the insulating column (6) is provided with a base (7).

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