Totally-enclosed outdoor high-voltage isolation type fuse and control method thereof

Abstract

The invention discloses a totally-enclosed outdoor high-voltage isolation type fuse and a control method thereof, and relates to the technical field of fusing protection, the totally-enclosed outdoor high-voltage isolation type fuse comprises a silica gel insulator, and the upper end and the lower end of the silica gel insulator are respectively provided with an upper static contact and a lower static contact. When the outdoor high-voltage isolation type fuse is used, the interiors of the upper static contact and the lower static contact are closed in an abutting mode through the closed isolation assembly, and foreign matter such as dust, water vapor and greasy dirt can be prevented from entering the static contact portions through the closing effect. The foreign matters may be attached to the surface of the contact, contact resistance is increased, heating is caused, and normal work of the fuse is affected, and the sealing effect can effectively isolate external corrosive gas or liquid and prevent the static contact from being oxidized or corroded, so that the conductive performance and the mechanical performance of the contact are ensured, and the service life of the fuse is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of fuse protection, and specifically to a fully enclosed outdoor high-voltage isolating fuse and its control method. Background Art

[0002] An outdoor high-voltage isolating fuse is an electrical device applied to an outdoor high-voltage power system, mainly used to isolate the power supply and protect the circuit in a high-voltage circuit.

[0003] As a common current overload protection device on the circuit, since the outdoor high-voltage isolating fuse is exposed outdoors for a long time, and the upper static contact and the lower static contact on the outdoor high-voltage isolating fuse are in an open state, the conductive connection part is prone to metal oxidation. After metal oxidation, the resistance of the conductive part increases, it is easy to heat up, and there is a risk of equipment short circuit, which affects the stable use of the outdoor high-voltage isolating fuse. Therefore, we propose a fully enclosed outdoor high-voltage isolating fuse and its control method. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully enclosed outdoor high-voltage isolating fuse and its control method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fully enclosed outdoor high-voltage isolating fuse, comprising:

[0006] A silicone insulator, with an upper static contact and a lower static contact respectively installed at the upper and lower ends thereof. An upper wiring terminal and a lower wiring terminal are respectively installed on the upper static contact and the lower static contact. An installation seat for auxiliary installation is fixed on the silicone insulator. It further includes:

[0007] A conductive component, arranged between the upper static contact and the lower static contact for assisting power transmission;

[0008] An isolating fuse protection component, arranged between the upper static contact and the lower static contact for isolation and protection;

[0009] An installation and connection component, arranged between the conductive component and the isolating fuse protection component for supporting and connecting the isolating fuse protection component and pushing it away during the fusing process;

[0010] And, a closed isolation component arranged on the upper static contact and the lower static contact for closed isolation during the conduction process. An adjustment component for adjusting the state of the closed isolation component is arranged on the upper static contact. A transmission component for transmitting power to the adjustment component during the elastic pushing process is arranged on the installation and connection component.

[0011] Preferably, the conductive assembly comprises an insulating tube arranged between the upper static contact and the lower static contact, conductive rods are installed at the upper and lower ends of the insulating tube, one group of the conductive rods is located on the side wall of the upper static contact and is sleeved and fixed with a connecting sleeve, two groups of pins for auxiliary rotation connection are symmetrically arranged between the connecting sleeve and the upper static contact, a limiting assembly for auxiliary connection rear limiting is arranged between the other group of the conductive rods and the lower static contact, and conductive connectors for conductively connecting the two groups of conductive rods are respectively arranged inside the upper static contact and the lower static contact;

[0012] The conductive connecting member comprises two groups of arc-shaped conductive voltage plates which are arranged inside the upper static contact and the lower static contact and are symmetrically arranged with respect to each other.

[0013] Preferably, the isolated fuse protection assembly includes a fuse tube, on which a fuse is passed, and conductive mounting frames are fixed on the two groups of conductive rods, and the two ends of the fuse are respectively arranged on one side of the two groups of conductive mounting frames, and the conductive mounting frames are threadedly connected with bolts for pressing the ends of the fuse against each other.

[0014] Preferably, the installation and connection assembly includes a U-shaped insulating frame installed on the conductive rod 201, the fuse tube is rotatably connected to the inner side of the U-shaped insulating frame through a mounting shaft, a push plate is rotatably connected to the U-shaped insulating frame through a first torque shaft, and after being pressed and fixed, the two ends of the fuse pull the outer side of the fuse tube to press against the push plate and cause the first torque shaft to generate torque.

[0015] Preferably, the closed isolation assembly includes an isolation plate fixed to the lower ends of the upper static contact and the lower static contact, and two groups of L-shaped grooves are symmetrically provided on the upper static contact and the lower static contact, and L-shaped plates are slidably connected to the two groups of L-shaped grooves, and L-shaped silicone plates for flexible closure are provided on opposite sides of the two groups of L-shaped plates, and semicircular grooves for closure with conductive rods are provided on the L-shaped silicone plates, and the upper static contact and the lower static contact are in a closed state under the action of the isolation plate, the two groups of L-shaped plates and the two groups of L-shaped silicone plates, and a linkage rod for auxiliary connection is fixed between the two groups of L-shaped plates located on the same side between the upper static contact and the lower static contact.

[0016] Preferably, the adjustment component is provided with two groups, and the two groups are arranged one-to-one corresponding to the two groups of L-shaped plates on the upper static contact. The adjustment component includes a support frame fixed to the bottom of the upper static contact, and the support frame is rotatably connected to a threaded tube, and the threaded tube is threadedly engaged with a threaded rod, and a connecting block is fixed to one end of the threaded rod, and the connecting block is fixed to the lower end of the L-shaped plate.

[0017] Preferably, the transmission assembly includes two groups of gears, the two groups of gears are connected and transmitted via a toothed belt, and the two groups of gears are respectively installed and connected to the first torque shaft and the threaded tube via an installation assembly.

[0018] Preferably, the installation assembly includes a spline shaft fixed to the ends of the first torsion shaft and the threaded pipe. A positioning ring for positioning during the installation process is fixed on the spline shaft. A spline hole for inserting and connecting with the spline shaft is provided on the gear. A limit nut for blocking and limiting after connection is threadedly engaged with the end of the spline shaft.

[0019] Preferably, the limiting assembly includes an installation groove opened on the conductive rod. A pull plate is rotatably connected to the installation groove through a second torsion shaft. A pull ring is provided on the pull plate. An L-shaped limiting plate is fixed on the pull plate. A connecting plate is fixed on the lower static contact head. A V-shaped baffle for abutting and transmitting with the L-shaped limiting plate is fixed on the connecting plate. A clamping groove for the end of the L-shaped limiting plate to be inserted into is provided on the back of the V-shaped baffle.

[0020] Preferably, a control method for a fully enclosed outdoor high-voltage isolating fuse includes the following steps:

[0021] S1: When the outdoor high-voltage isolating fuse is in use, the fuse is pre-installed. During the installation process of the fuse, the fuse is passed through the fuse tube and both ends of the fuse are respectively on one side of the conductive mounting frames of the two groups of conductive rods. Through the abutting action of the bolts against the ends of the fuse, both ends of the fuse are respectively fixed on the two groups of conductive mounting frames, completing the installation of the fuse.

[0022] S2: During the installation process of the fuse, through the abutting action between the fuse and the inside of the fuse tube and the rotatable connection action of the installation shaft on the fuse tube, one end of the fuse tube is pushed to move towards the U-shaped insulating frame under force. During the movement, the fuse tube abuts against the push plate and pushes the push plate to rotate. During the rotation of the push plate, the first torsion shaft rotates and generates torsion. Under the action of the torsion, the push plate keeps abutting and squeezing against the outside of the fuse tube with a certain force. Through the squeezing action, the fuse inside the fuse tube remains in a taut state after installation, facilitating the stability of subsequent fusing protection.

[0023] S3: After the fuse is installed, the upper terminal and the lower terminal on the outdoor high-voltage isolating fuse are respectively electrically connected to the input end and the connection end of the circuit. After the connection is completed, a closing operation is performed on the entire outdoor high-voltage isolating fuse. During the closing operation, through the rotatable connection action of the two pin shafts on the connecting sleeve, the insulating tube and the two groups of conductive rods rotate. During the rotation, the two groups of conductive rods respectively abut against two symmetrically arranged arc-shaped voltage conducting plates inside the upper static contact head and the lower static contact head. Through the abutting action, the circuit of the upper terminal, the upper static contact head, the conductive rod, the fuse, the conductive rod, the lower static contact head and the lower terminal is connected, completing the closing operation.

[0024] S4: During the closing operation, as the lower conductive rod moves towards the lower static contact, during the movement, the L-shaped limit plate on the front side of the pull plate abuts against the V-shaped baffle on the connecting plate. During the abutting process, the pull plate is forced to rotate and the second torsion shaft generates elastic force. As the movement of the lower conductive rod continues, the L-shaped limit plate crosses over the V-shaped baffle and is reset under the action of the second torsion shaft. During the reset process, the front end of the L-shaped limit plate is inserted into the card slot of the V-shaped baffle. Through the clamping action, the pushed conductive rod is pulled and limited, increasing the anti-disengagement effect, preventing the occurrence of overtravel and incomplete closing during the closing process, effectively avoiding abnormal closing situations generated by operators in poor vision and harsh operating environments. Through the limiting action, under extremely harsh weather conditions, abnormal fusing and falling off will not occur, effectively ensuring the stability of the product;

[0025] S5: During the closing operation, through the self-abutting deformation action of the L-shaped silica gel plate, the movement of the conductive rod is not restricted, enabling the two groups of conductive rods to rotate normally for closing and opening operations. After closing, through the elastic reset action of the L-shaped silica gel plate and the interaction between the isolation plate and the two groups of L-shaped plates, the conductive rod is clamped between the semi-circular grooves of the two groups of L-shaped silica gel plates, making the inside of the upper static contact and the lower static contact abut and close. Through the closing action, foreign matters such as dust, water vapor, and oil stains can be prevented from entering the static contact part. These foreign matters may adhere to the contact surface, increasing the contact resistance, causing heating, and affecting the normal operation of the fuse. Moreover, the closing action can effectively isolate external corrosive gases or liquids, preventing the static contact from being oxidized or corroded, thereby ensuring the conductive performance and mechanical performance of the contact and extending the service life of the fuse;

[0026] S6: When a fault such as overload or short circuit occurs in the circuit, resulting in the current exceeding the rated current of the fuse, the fuse wire will heat up and melt. Through the torsion action of the first torsion shaft and the connection action of the push plate, the fuse tube is bounced back and reset. The bouncing speed is faster than the sliding speed, and at the same time, the situation of arcing during the bouncing process is avoided, preventing short circuit caused by arc blowing between phases;

[0027] S7: During the reset rotation of the first torsion shaft, through the interaction of the toothed belt and the two groups of gears, the threaded tube is driven to rotate. During the rotation of the threaded tube, through the meshing transmission between the threaded tube and the threaded rod, the L-shaped plate is forced to move outward towards the outside of the upper static contact and the lower static contact. During the movement, a gap is generated between the two L-shaped silica gel plates. Through the action of the gap, ventilation and heat dissipation are carried out inside the upper static contact and the lower static contact. When a large amount of heat is generated during the melting of the fuse wire and transferred to the inside of the upper static contact and the lower static contact, through the action of the gap between the L-shaped silica gel plates, auxiliary rapid heat dissipation is carried out, avoiding excessive temperature inside the upper static contact and the lower static contact, which may cause deformation, softening or even failure of some materials.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. When the outdoor high-voltage isolation fuse of the present invention is in use, through the closed isolation component, the inside of the upper static contact and the lower static contact is in a closed state of mutual contact. Through the closing action, foreign matters such as dust, water vapor, and oil stain can be prevented from entering the static contact part. These foreign matters may adhere to the surface of the contact, increasing the contact resistance, resulting in heat generation and affecting the normal operation of the fuse. Moreover, the closing action can effectively isolate the external corrosive gas or liquid, preventing the static contact from being oxidized or corroded, thereby ensuring the electrical conductivity and mechanical properties of the contact and extending the service life of the fuse;

[0030] 2. When the outdoor high-voltage isolation fuse of the present invention is in use, through the limiting component, the pushed conductive rod is pulled and limited, increasing the anti-detachment effect, preventing the occurrence of over-travel and incomplete closing during the closing process, effectively avoiding the abnormal closing situation generated by the operator under poor vision and harsh operating environments. Through the limiting action, under extremely harsh weather conditions, abnormal detachment other than normal fusing will not occur, effectively ensuring the stability of the product;

[0031] 3. When the fuse wire of the outdoor high-voltage isolation fuse of the present invention melts, through transmission, the fuse tube is bounced back to its reset position. The bouncing speed is faster than the sliding speed, and at the same time, the situation of arc drawing during the bouncing process is avoided, preventing the occurrence of short circuit caused by arc blowing between phases. Description of the Drawings

[0032] Figure 1 is the overall external structure schematic diagram of the present invention;

[0033] Figure 2 is the structural schematic diagram of the limiting component of the present invention;

[0034] Figure 3 is the structural schematic diagram of the installation and connection component of the present invention;

[0035] Figure 4Schematic diagram of the conductive component structure of the present invention;

[0036] Figure 5 Schematic diagram of the closed isolation component structure of the present invention;

[0037] Figure 6 Schematic diagram of the adjustment component structure of the present invention;

[0038] Figure 7 Schematic diagram of the transmission component structure of the present invention;

[0039] Figure 8 Schematic diagram of the installation component structure of the present invention;

[0040] Figure 9 is Figure 2 Enlarged view at position A in

[0041] In the figure: 101, silicone insulator; 102, upper terminal; 103, lower terminal; 104, mounting base; 105, upper static contact; 106, lower static contact; 201, conductive rod; 202, insulating tube; 203, connecting sleeve; 204, pin shaft; 3, arc-shaped voltage conducting plate; 401, fuse tube; 402, fuse; 403, conductive mounting bracket; 404, bolt; 501, U-shaped insulating bracket; 502, mounting shaft; 503, first torsion rotating shaft; 504, push plate; 601, isolation plate; 602, L-shaped groove; 603, L-shaped plate; 604, L-shaped silicone plate; 605, linkage rod; 606, semi-circular groove; 701, support frame; 702, threaded tube; 703, threaded rod; 704, connecting block; 801, gear; 802, toothed belt; 901, spline shaft; 902, positioning ring; 903, spline hole; 904, limit nut; 1001, pull plate; 1002, second torsion rotating shaft; 1003, L-shaped limit plate; 1004, connecting plate; 1005, V-shaped baffle; 1006, pull ring. Detailed implementation mode

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment 1

[0044] Please refer to Figures 1-9 , a fully enclosed outdoor high-voltage isolated fuse shown in the figure, includes:

[0045] Silicone insulator 101, upper and lower ends of the silicone insulator 101 are respectively installed with an upper static contact 105 and a lower static contact 106, the upper static contact 105 and the lower static contact 106 are respectively installed with an upper terminal 102 and a lower terminal 103, and an installation base 104 for auxiliary installation is fixed on the silicone insulator 101;

[0046] It should be noted here that: the silicone insulator 101, the upper terminal 102, the lower terminal 103, the installation base 104, the upper static contact 105 and the lower static contact 106 are conventional technical components on the isolated fuse, and their working principles and installation methods are well-known technologies in this application and will not be elaborated here;

[0047] It also includes:

[0048] A conductive component, which is arranged between the upper static contact 105 and the lower static contact 106 for assisting power transmission;

[0049] An isolated fuse protection component, which is arranged between the upper static contact 105 and the lower static contact 106 for isolation and protection;

[0050] An installation and connection component, which is arranged between the conductive component and the isolated fuse protection component for supporting and connecting the isolated fuse protection component and pushing it away during the fusing process;

[0051] And, a closed isolation component arranged on the upper static contact 105 and the lower static contact 106 for closed isolation during the conduction process, an adjustment component for adjusting the state of the closed isolation component is arranged on the upper static contact 105, and a transmission component for transmitting the adjustment component during the elastic pushing process is arranged on the installation and connection component;

[0052] It should be noted here that: through the mutual cooperation of components such as the conductive component, the closed isolation component and the installation and connection component, the inside of the upper static contact 105 and the lower static contact 106 is in a closed state of being in contact with each other. Through the closing effect, foreign matters such as dust, water vapor, and oil stains can be prevented from entering the static contact part. These foreign matters may adhere to the contact surface, increase the contact resistance, cause heating, and affect the normal operation of the fuse. Moreover, the closing effect can effectively isolate the external corrosive gases or liquids, prevent the static contact from being oxidized or corroded, thereby ensuring the conductive performance and mechanical performance of the contact and extending the service life of the fuse.

[0053] Preferably, the conductive component includes an insulating tube 202 disposed between the upper static contact 105 and the lower static contact 106. Conductive rods 201 are installed at both the upper and lower ends of the insulating tube 202. A connecting sleeve 203 is sleeved and fixed on the side wall of the upper static contact 105 for a group of conductive rods 201. Two groups of pin shafts 204 for auxiliary rotational connection are symmetrically arranged between the connecting sleeve 203 and the upper static contact 105. A limiting component for auxiliary connection and post-limiting is arranged between the other group of conductive rods 201 and the lower static contact 106. Conductive connection members for electrically connecting the two groups of conductive rods 201 are respectively arranged inside the upper static contact 105 and the lower static contact 106;

[0054] The isolated fuse protection component includes a fuse tube 401, a fuse 402 is passed through the fuse tube 401. Conductive mounting brackets 403 are fixed on the two groups of conductive rods 201. Both ends of the fuse 402 are respectively arranged on one side of the two groups of conductive mounting brackets 403. A bolt 404 for pressing against the end of the fuse 402 is threadedly connected to the conductive mounting bracket 403;

[0055] The conductive connection member includes two groups of arc-shaped conductive pressure plates 3 which are symmetrically arranged inside the upper static contact 105 and the lower static contact 106;

[0056] It should be noted here that: through the arc-shaped conductive pressure plate 3, it is convenient to assist in conductive connection;

[0057] It should be noted here that: when the outdoor high-voltage isolated fuse is in use, the fuse 402 is installed in advance. During the installation process of the fuse 402, the fuse 402 is passed through the fuse tube 401 and both ends of the fuse 402 are respectively located on one side of the conductive mounting brackets 403 of the two groups of conductive rods 201. Through the abutting action of the bolt 404 against the end of the fuse 402, both ends of the fuse 402 are respectively fixed on the two groups of conductive mounting brackets 403 to complete the installation of the fuse 402. After the installation of the fuse 402, the upper terminal 102 and the lower terminal 103 on the outdoor high-voltage isolated fuse are respectively electrically connected to the input end and the connection end of the circuit. After the connection is completed, a closing operation is performed on the entire outdoor high-voltage isolated fuse. During the closing operation, through the rotational connection action of the two groups of pin shafts 204 on the connecting sleeve 203, the insulating tube 202 and the two groups of conductive rods 201 rotate. During the rotation process, the two groups of conductive rods 201 respectively abut against the two groups of symmetrically arranged arc-shaped conductive pressure plates 3 inside the upper static contact 105 and the lower static contact 106. Through the abutting action, the circuit of the upper terminal 102, the upper static contact 105, the conductive rod 201, the fuse 402, the conductive rod 201, the lower static contact 106 and the lower terminal 103 is connected to complete the closing operation.

[0058] Preferably, the installation and connection component includes a U-shaped insulating bracket 501 installed on the conductive rod 201. The fuse tube 401 is rotatably connected to the inner side of the U-shaped insulating bracket 501 through a mounting shaft 502. A push plate 504 is rotatably connected to the U-shaped insulating bracket 501 through a first torsion rotating shaft 503. After both ends of the fuse 402 are press-fitted and fixed, the outer side of the fuse tube 401 is pulled to abut and squeeze the push plate 504, causing the first torsion rotating shaft 503 to generate torsion;

[0059] It should be noted here that during the installation of the fuse 402, due to the abutting effect between the fuse 402 and the inside of the fuse tube 401 and the rotatable connection effect of the mounting shaft 502 on the fuse tube 401, one end of the fuse tube 401 is pushed to move towards the U-shaped insulating bracket 501 under force. During the movement, the fuse tube 401 abuts against the push plate 504 and pushes the push plate 504 to rotate. During the rotation of the push plate 504, the first torsion rotating shaft 503 rotates and generates torsion. Under the action of the torsion, the push plate 504 abuts and squeezes the outer side of the fuse tube 401 with a certain force. Through the squeezing effect, the fuse 402 inside the fuse tube 401 is kept in a taut state after installation, facilitating the stability of subsequent fuse protection. When a fault such as overload or short circuit occurs in the circuit, causing the current to exceed the rated current of the fuse, the fuse 402 will heat up and melt. Through the torsion action of the first torsion rotating shaft 503 and the connection effect of the push plate 504, the fuse tube 401 is bounced back to its original position. The bouncing speed is faster than the sliding speed, and at the same time, the situation of arcing during the bouncing process is avoided, and the occurrence of arc blowing between phases and short circuit is avoided;

[0060] It should be noted here that the first torsion rotating shaft 503 is a conventional connecting component for rotational connection. It will generate torsion when it rotates, assisting the subsequent reset rotation. Its working principle and operation method are regarded as prior art in this application and will not be elaborated here.

[0061] Preferably, the closed isolation component includes an isolation plate 601 fixed to the lower ends of the upper static contact 105 and the lower static contact 106. Two groups of L-shaped grooves 602 are symmetrically arranged on the upper static contact 105 and the lower static contact 106. An L-shaped plate 603 is slidably connected to the two groups of L-shaped grooves 602. An L-shaped silica gel plate 604 for flexible sealing is arranged on the opposite side of the two groups of L-shaped plates 603. A semi-circular groove 606 for sealing with the conductive rod 201 is arranged on the L-shaped silica gel plate 604. The upper static contact 105 and the lower static contact 106 are in a closed state under the action of the isolation plate 601, the two groups of L-shaped plates 603 and the two groups of L-shaped silica gel plates 604. A linkage rod 605 for auxiliary connection is fixed between the two groups of L-shaped plates 603 on the same side between the upper static contact 105 and the lower static contact 106;

[0062] It should be noted here that during the closing operation, due to the self - counteracting deformation of the L - shaped silica gel plate 604, it does not restrict the movement of the conductive rod 201, enabling the two groups of conductive rods 201 to rotate normally for closing and opening operations. After closing, through the elastic reset function of the L - shaped silica gel plate 604 and the interaction between the isolation plate 601 and the two groups of L - shaped plates 603, the conductive rod 201 is clamped between the semi - circular grooves 606 of the two groups of L - shaped silica gel plates 604, making the interiors of the upper static contact 105 and the lower static contact 106 in a state of being in contact and closed, through the closing function;

[0063] It is worth noting here that the linkage rod 605 is used to assist the synchronous movement of the L - shaped plates 603 on the same side of the upper static contact 105 and the lower static contact 106 after being stressed.

[0064] Preferably, there are two sets of adjusting components, and the two sets are arranged in one - to - one correspondence with the two sets of L - shaped plates 603 on the upper static contact 105. The adjusting component includes a support frame 701 fixed to the bottom of the upper static contact 105. A threaded tube 702 is rotatably connected to the support frame 701. A threaded rod 703 is threadedly engaged with the threaded tube 702. One end of the threaded rod 703 is fixed with a connecting block 704, and the connecting block 704 is fixed to the lower end of the L - shaped plate 603;

[0065] It should be noted here that when a fault such as overload or short - circuit occurs in the circuit, causing the current to exceed the rated current of the fuse, the fuse wire 402 will heat up and melt. Through the torque action of the first torsion shaft 503 and the connection action of the push plate 504, the fuse tube 401 is bounced back to its original position. The bouncing speed is faster than the sliding speed, and at the same time, the situation of arcing during the bouncing process is avoided, preventing short - circuit caused by arc blowing between phases. And during the reset rotation of the first torsion shaft 503, through transmission, the threaded tube 702 is driven to rotate. During the rotation of the threaded tube 702, through the meshing transmission between the threaded tube 702 and the threaded rod 703, the L - shaped plate 603 is stressed and moves towards the outside of the upper static contact 105 and the lower static contact 106. During the movement, a gap is generated between the two groups of L - shaped silica gel plates 604.

[0066] Preferably, the transmission component includes two sets of gears 801. The two sets of gears 801 are connected and driven by a toothed belt 802. The two sets of gears 801 are respectively installed and connected to the first torsion shaft 503 and the threaded tube 702 through an installation component;

[0067] It should be noted here that during the reset rotation of the first torsion shaft 503, through the interaction between the toothed belt 802 and the two sets of gears 801, the threaded tube 702 is driven to rotate.

[0068] Preferably, the installation component includes a spline shaft 901 fixed to the ends of the first torsion rotating shaft 503 and the threaded tube 702. A positioning ring 902 for positioning during the installation process is fixed on the spline shaft 901. A spline hole 903 for insertion connection with the spline shaft 901 is formed on the gear 801. A limit nut 904 for blocking and limiting after connection is threadedly engaged with the end of the spline shaft 901.

[0069] It should be noted here that during the installation process, the two groups of gears 801 are respectively sleeved and installed on the two groups of spline shafts 901 through the spline holes 903 and positioned by the positioning rings 902. After sleeving and positioning, the limit nut 904 is threadedly connected to the spline shaft 901 to limit and fix the sleeved and positioned gears 801, which is convenient for the quick installation and disassembly of the auxiliary gear 801 with the first torsion rotating shaft 503 and the threaded tube 702.

[0070] Preferably, the limit component includes an installation groove formed on the conductive rod 201. A pull plate 1001 is rotatably connected to the installation groove through a second torsion rotating shaft 1002. A pull ring 1006 is formed on the pull plate 1001. An L-shaped limit plate 1003 is fixed on the pull plate 1001. A connecting plate 1004 is fixed on the lower static contact 106. A V-shaped baffle 1005 for abutting and transmitting with the L-shaped limit plate 1003 is fixed on the connecting plate 1004. A card slot for the end of the L-shaped limit plate 1003 to be inserted into is formed on the back of the V-shaped baffle 1005.

[0071] It should be noted here that during the closing operation, as the conductive rod 201 below moves towards the lower static contact 106, during the movement, the L-shaped limit plate 1003 on the front side of the pull plate 1001 abuts against the V-shaped baffle 1005 on the connecting plate 1004. During the abutting process, the pull plate 1001 is pushed to rotate and the second torsion rotating shaft 1002 generates an elastic force. As the conductive rod 201 below continues to move, the L-shaped limit plate 1003 crosses over the V-shaped baffle 1005 and is reset under the action of the second torsion rotating shaft 1002. During the reset process, the front end of the L-shaped limit plate 1003 is inserted into the card slot of the V-shaped baffle 1005. Through the carding action, the pushed conductive rod 201 is pulled and limited, increasing the anti-disconnection effect.

[0072] It should be noted here that the second torsion rotating shaft 1002 is a conventional connecting component for rotational connection. It will generate torsion when rotating, assisting the subsequent reset rotation. Its working principle and operation method are regarded as prior art in this application and will not be elaborated too much here.

[0073] In this solution: A fully enclosed outdoor high-voltage isolated fuse control method includes the following steps:

[0074] S1: When the outdoor high-voltage isolating fuse is in use, the fuse wire 402 is pre-installed. During the installation process of the fuse wire 402, the fuse wire 402 is passed through the fuse tube 401, and both ends of the fuse wire 402 are respectively located on one side of the conductive mounting brackets 403 of the two groups of conductive rods 201. Through the abutting action of the bolts 404 against the ends of the fuse wire 402, both ends of the fuse wire 402 are respectively fixed on the two groups of conductive mounting brackets 403, completing the installation of the fuse wire 402;

[0075] S2: During the installation process of the fuse wire 402, through the abutting action between the fuse wire 402 and the inside of the fuse tube 401 and the rotatable connection action of the mounting shaft 502 on the fuse tube 401, one end of the fuse tube 401 is pushed to move towards the U-shaped insulating bracket 501 under force. During the movement, the fuse tube 401 abuts against the push plate 504 and pushes the push plate 504 to rotate. During the rotation of the push plate 504, the first torsion shaft 503 rotates and generates torsion. Under the action of the torsion, the push plate 504 keeps abutting and squeezing against the outside of the fuse tube 401 with a certain force. Through the squeezing action, the fuse wire 402 inside the fuse tube 401 remains in a taut state after installation, facilitating the stability of subsequent fusing protection;

[0076] S3: After the fuse wire 402 is installed, the upper terminal 102 and the lower terminal 103 on the outdoor high-voltage isolating fuse are respectively electrically connected to the input end and the connection end of the circuit. After the connection is completed, a closing operation is performed on the entire outdoor high-voltage isolating fuse. During the closing operation, through the rotatable connection action of the two groups of pin shafts 204 on the connecting sleeve 203, the insulating tube 202 and the two groups of conductive rods 201 rotate. During the rotation, the two groups of conductive rods 201 respectively abut against two symmetrically arranged arc-shaped voltage conducting plates 3 inside the upper static contact 105 and the lower static contact 106. Through the abutting action, the circuit of the upper terminal 102, the upper static contact 105, the conductive rod 201, the fuse wire 402, the conductive rod 201, the lower static contact 106, and the lower terminal 103 is connected, completing the closing operation;

[0077] S4: During the closing operation, as the lower conductive rod 201 moves towards the lower static contact 106, during the movement, the L-shaped limiting plate 1003 on the front side of the pull plate 1001 abuts against the V-shaped baffle 1005 on the connecting plate 1004. During the abutting process, the pull plate 1001 is forced to rotate and the second torsion shaft 1002 generates elastic force. As the lower conductive rod 201 continues to move, the L-shaped limiting plate 1003 crosses over the V-shaped baffle 1005 and is reset under the action of the second torsion shaft 1002. During the reset process, the front end of the L-shaped limiting plate 1003 is caught inside the card slot of the V-shaped baffle 1005. Through the clamping action, the pushed conductive rod 201 is pulled and limited, increasing the anti-disconnection effect, preventing over-travel and incomplete closing during the closing process, effectively avoiding abnormal closing situations that may occur when the operator has poor visibility and the operating environment is harsh. Through the limiting action, under extremely harsh weather conditions, abnormal fusing and falling off will not occur, effectively ensuring the stability of the product;

[0078] S5: During the closing operation, through the self-abutting and deforming action of the L-shaped silica gel plate 604, the movement of the conductive rod 201 is not restricted, enabling the two groups of conductive rods 201 to rotate normally for closing and opening operations. After closing, through the elastic reset action of the L-shaped silica gel plate 604 and the interaction between the isolation plate 601 and the two groups of L-shaped plates 603, the conductive rod 201 is caught between the semi-circular grooves 606 of the two groups of L-shaped silica gel plates 604, making the inside of the upper static contact 105 and the lower static contact 106 abut and be sealed. Through the sealing action, foreign matters such as dust, water vapor, and oil stains can be prevented from entering the static contact part. These foreign matters may adhere to the contact surface, increasing the contact resistance, resulting in heat generation, and affecting the normal operation of the fuse. Moreover, the sealing action can effectively isolate the external corrosive gases or liquids, preventing the static contact from being oxidized or corroded, thereby ensuring the conductive performance and mechanical performance of the contact and extending the service life of the fuse;

[0079] S6: When a fault such as overload or short circuit occurs in the circuit, causing the current to exceed the rated current of the fuse, the fuse wire 402 will heat up and melt. Through the torsion action of the first torsion shaft 503 and the connection action of the push plate 504, the fuse tube 401 is ejected and reset. The ejection speed is faster than the sliding speed, and at the same time, the situation of arcing during the ejection process is avoided, preventing short circuit caused by arc blowing between phases;

[0080] S7: During the reset rotation of the first torsion rotating shaft 503, through the interaction between the toothed belt 802 and the two groups of gears 801, the threaded tube 702 is driven to rotate. During the rotation of the threaded tube 702, through the meshing transmission between the threaded tube 702 and the threaded rod 703, the L-shaped plate 603 is forced to move outward towards the upper static contact 105 and the lower static contact 106. During the movement, a gap is generated between the two groups of L-shaped silicone plates 604. Through the action of the gap, ventilation and heat dissipation are carried out inside the upper static contact 105 and the lower static contact 106. When a large amount of heat generated by the melting of the fuse 402 is transferred to the inside of the upper static contact 105 and the lower static contact 106, the gap between the L-shaped silicone plates 604 is used to assist in rapid heat dissipation, avoiding deformation, softening or even failure of some materials due to excessive temperature inside the upper static contact 105 and the lower static contact 106.

[0081] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0082] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully enclosed outdoor high-voltage isolating fuse, comprising: A silicone insulator (101), wherein an upper static contact (105) and a lower static contact (106) are respectively mounted on the upper and lower ends of the silicone insulator (101), an upper wiring terminal (102) and a lower wiring terminal (103) are respectively mounted on the upper static contact (105) and the lower static contact (106), and a mounting seat (104) for auxiliary mounting is fixed on the silicone insulator (101); It is characterized by further comprising: A conductive component, disposed between the upper stationary contact (105) and the lower stationary contact (106) and used to assist power transmission; An isolation type fuse protection component is arranged between the upper static contact (105) and the lower static contact (106) for isolation protection; An installation connection component is arranged between the conductive component and the isolated fuse protection component to support the connection of the isolated fuse protection component and to bounce and push it away during the fusing process; And, a closed isolation component for closed isolation during the conduction process is arranged on the upper static contact (105) and the lower static contact (106), the upper static contact (105) is provided with an adjustment component for adjusting the state of the closed isolation component, and the installation connection component is provided with a transmission component for transmitting the adjustment component during the elastic force pushing process.

2. The fully enclosed outdoor high-voltage isolated fuse according to claim 1, wherein: The conductive component comprises an insulating tube (202) arranged between an upper stationary contact (105) and a lower stationary contact (106); conductive rods (201) are installed at both upper and lower ends of the insulating tube (202); one group of the conductive rods (201) is located on the side wall of the upper stationary contact (105) and is sleeved and fixed with a connecting sleeve (203); two groups of pins (204) for auxiliary rotation connection are symmetrically arranged between the connecting sleeve (203) and the upper stationary contact (105); a limiting component for auxiliary connection rear limiting is arranged between the other group of the conductive rods (201) and the lower stationary contact (106); and conductive connecting pieces for conductively connecting the two groups of conductive rods (201) are respectively arranged inside the upper stationary contact (105) and the lower stationary contact (106); The conductive connecting piece comprises two groups of arc-shaped conductive voltage plates (3) arranged inside the upper static contact (105) and the lower static contact (106) and arranged symmetrically to each other.

3. The fully enclosed outdoor high-voltage isolated fuse according to claim 2, wherein: The isolated fuse protection assembly comprises a fuse tube (401), a fuse (402) is passed through the fuse tube (401), a conductive mounting frame (403) is fixed on the two groups of conductive rods (201), two ends of the fuse (402) are respectively arranged on one side of the two groups of conductive mounting frames (403), and a bolt (404) for pressing the ends of the fuse (402) against each other is threadedly connected to the conductive mounting frame (403).

4. A fully enclosed outdoor high-voltage isolating fuse according to claim 3, characterized in that: The installation and connection component includes a U-shaped insulating frame (501) installed on the conductive rod (201). The fuse tube (401) is rotatably connected to the inner side of the U-shaped insulating frame (501) through an installation shaft (502). A push plate (504) is rotatably connected to the U-shaped insulating frame (501) through a first torsion rotating shaft (503). After the two ends of the fuse (402) are press-fitted and fixed, the outer side of the fuse tube (401) pulls and abuts against the push plate (504), causing the first torsion rotating shaft (503) to generate torsion.

5. A fully enclosed outdoor high-voltage isolated fuse according to claim 4, characterized in that: The closed isolation component includes an isolation plate (601) fixed to the lower ends of the upper static contact (105) and the lower static contact (106). Two groups of L-shaped grooves (602) are symmetrically arranged on the upper static contact (105) and the lower static contact (106). An L-shaped plate (603) is slidably connected to the two groups of L-shaped grooves (602). An L-shaped silicone plate (604) for flexible closing is arranged on the opposite side of the two groups of L-shaped plates (603). A semi-circular groove (606) for closing with the conductive rod (201) is arranged on the L-shaped silicone plate (604). The upper static contact (105) and the lower static contact (106) are in a closed state under the action of the isolation plate (601), the two groups of L-shaped plates (603) and the two groups of L-shaped silicone plates (604). A linkage rod (605) for auxiliary connection is fixed between the two groups of L-shaped plates (603) on the same side between the upper static contact (105) and the lower static contact (106).

6. The fully enclosed outdoor high-voltage isolating fuse according to claim 5, characterized in that: Two sets of adjusting components are provided, and the two sets are arranged in one-to-one correspondence with the two groups of L-shaped plates (603) on the upper static contact (105). The adjusting component includes a support frame (701) fixed to the bottom of the upper static contact (105). A threaded tube (702) is rotatably connected to the support frame (701). A threaded rod (703) is threadedly engaged with the threaded tube (702). One end of the threaded rod (703) is fixed with a connecting block (704), and the connecting block (704) is fixed to the lower end of the L-shaped plate (603).

7. The fully enclosed outdoor high-voltage isolating fuse according to claim 6, characterized in that: The transmission component includes two groups of gears (801). The two groups of gears (801) are connected and driven by a toothed belt (802). The two groups of gears (801) are respectively installed and connected to the first torsion rotating shaft (503) and the threaded tube (702) through an installation component.

8. A fully enclosed outdoor high-voltage isolated fuse according to claim 7, characterized in that: The installation component includes a spline shaft (901) fixed to the ends of the first torsion rotating shaft (503) and the threaded tube (702). A positioning ring (902) for positioning during installation is fixed on the spline shaft (901). A spline hole (903) for inserting and connecting with the spline shaft (901) is arranged on the gear (801). A limit nut (904) for blocking and limiting after connection is threadedly engaged with the end of the spline shaft (901).

9. The fully enclosed outdoor high-voltage isolated fuse according to claim 2, characterized in that: The limiting component includes an installation groove formed on the conductive rod (201). A pulling plate (1001) is rotatably connected to the installation groove through a second torsion rotating shaft (1002). A pulling ring (1006) is formed on the pulling plate (1001). An L-shaped limiting plate (1003) is fixed on the pulling plate (1001). A connecting plate (1004) is fixed on the lower static contact (106). A V-shaped baffle (1005) for abutting and transmitting with the L-shaped limiting plate (1003) is fixed on the connecting plate (1004). A clamping groove for the end of the L-shaped limiting plate (1003) to be inserted into is formed on the back of the V-shaped baffle (1005).

10. A control method for a fully enclosed outdoor high-voltage isolated fuse, which refers to a fully enclosed outdoor high-voltage isolated fuse described in any one of claims 1-9, characterized in that, It includes the following steps: S1: When the outdoor high-voltage isolating fuse is in use, the fuse wire (402) is installed in advance. During the installation process of the fuse wire (402), the fuse wire (402) is passed through the fuse tube (401) and both ends of the fuse wire (402) are respectively on one side of the conductive mounting brackets (403) of the two groups of conductive rods (201). Through the abutting action of the bolt (404) against the end of the fuse wire (402), both ends of the fuse wire (402) are respectively fixed on the two groups of conductive mounting brackets (403), completing the installation of the fuse wire (402). S2: During the installation process of the fuse wire (402), through the abutting action between the fuse wire (402) and the inside of the fuse tube (401) and the rotatable connection action of the installation shaft (502) on the fuse tube (401), one end of the fuse tube (401) is pushed to move towards the U-shaped insulating bracket (501) under force. During the movement, the fuse tube (401) abuts against the push plate (504) and pushes the push plate (504) to rotate. During the rotation of the push plate (504), the first torsion rotating shaft (503) rotates and generates torsion. Under the action of the torsion, the push plate (504) abuts and presses against the outside of the fuse tube (401) with a certain force. Through the extrusion action, the fuse wire (402) inside the fuse tube (401) remains in a taut state after installation, facilitating the stability of subsequent fusing protection. S3: After the fuse wire (402) is installed, the upper terminal (102) and the lower terminal (103) on the outdoor high-voltage isolating fuse are respectively electrically connected to the input end and the connection end of the circuit. After the connection is completed, a closing operation is performed on the entire outdoor high-voltage isolating fuse. During the closing operation, through the rotatable connection action of the two groups of pin shafts (204) on the connecting sleeve (203), the insulating tube (202) and the two groups of conductive rods (201) rotate. During the rotation, the two groups of conductive rods (201) respectively abut against two symmetrically arranged arc-shaped voltage conducting plates (3) inside the upper static contact (105) and the lower static contact (106). Through the abutting action, the circuit of the upper terminal (102), the upper static contact (105), the conductive rod (201), the fuse wire (402), the conductive rod (201), the lower static contact (106) and the lower terminal (103) is connected, completing the closing operation. S4: During the closing operation, as the lower conductive rod (201) moves towards the lower static contact (106), during the movement, the L-shaped limiting plate (1003) on the front side of the pull plate (1001) abuts against the V-shaped baffle (1005) on the connecting plate (1004). During the abutting process, the pull plate (1001) is forced to rotate and the second torsion rotating shaft (1002) generates elastic force. As the lower conductive rod (201) continues to move, the L-shaped limiting plate (1003) crosses over the V-shaped baffle (1005) and is reset under the action of the second torsion rotating shaft (1002). During the reset process, the front end of the L-shaped limiting plate (1003) is clamped into the card slot inside the V-shaped baffle (1005). Through the clamping action, the pushed conductive rod (201) is pulled and limited, increasing the anti-disconnection effect, preventing overtravel and incomplete closing during the closing process, effectively avoiding abnormal closing situations caused by operators in cases with poor visual effects and harsh operating environments. Through the limiting action, under extremely harsh weather conditions, abnormal fusing and falling off will not occur, effectively ensuring the stability of the product; S5: During the closing operation, through the self-abutting and deforming action of the L-shaped silica gel plate (604), the movement of the conductive rod (201) is not restricted, enabling the two groups of conductive rods (201) to rotate normally for closing and opening operations. After closing, through the elastic reset action of the L-shaped silica gel plate (604) and the interaction between the isolation plate (601) and the two groups of L-shaped plates (603), the conductive rod (201) is clamped between the semi-circular grooves (606) of the two groups of L-shaped silica gel plates (604), making the inside of the upper static contact (105) and the lower static contact (106) abut and close. Through the closing action, foreign matters such as dust, water vapor, and oil stains can be prevented from entering the static contact part. These foreign matters may adhere to the contact surface, increasing the contact resistance, causing heating, and affecting the normal operation of the fuse. Moreover, the closing action can effectively isolate external corrosive gases or liquids, preventing the static contact from being oxidized or corroded, thereby ensuring the conductive performance and mechanical performance of the contact and extending the service life of the fuse; S6: When a fault such as overload or short circuit occurs in the circuit, resulting in the current exceeding the rated current of the fuse, the fuse wire (402) will heat up and melt. Through the torsion action of the first torsion rotating shaft (503) and the connection action of the push plate (504), the fuse tube (401) is bounced back to its reset position. The bouncing speed is faster than the sliding speed, and at the same time, the situation of arcing during the bouncing process is avoided, preventing short circuit caused by arc blowing between phases; S7: And during the reset rotation of the first torsion rotating shaft (503), through the interaction between the toothed belt (802) and the two groups of gears (801), the threaded tube (702) is driven to rotate. During the rotation of the threaded tube (702), through the meshing transmission between the threaded tube (702) and the threaded rod (703), the L-shaped plate (603) is forced to move outward towards the upper static contact (105) and the lower static contact (106). During the movement, a gap is generated between the two groups of L-shaped silica gel plates (604). Through the action of the gap, ventilation and heat dissipation are carried out inside the upper static contact (105) and the lower static contact (106). When a large amount of heat is generated during the melting of the fuse (402) and transferred to the inside of the upper static contact (105) and the lower static contact (106), through the action of the gap between the L-shaped silica gel plates (604), rapid heat dissipation is assisted, avoiding the deformation, softening or even failure of some materials due to excessive temperature inside the upper static contact (105) and the lower static contact (106).

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