Anti-reverse device

Abstract

The embodiment of the present invention discloses an anti-sequential collapse device, which is used to connect an insulator string and a conductor. The insulator string is fixed on a transmission line tower and is used to suspend the conductor. The device includes a housing with a clamping channel, a connector movably disposed in the clamping channel and used to connect the insulator string or the conductor, and a clamping assembly for clamping the connector. The outer periphery of the connector protrudes to form a convex portion. The clamping assembly includes a mounting seat fixed in the clamping channel, a rotating arm rotatably disposed on the mounting seat, a first elastic member for driving the rotating arm to abut against the convex portion, a slider slidably disposed in the clamping channel, a connecting rod connecting the rotating arm and the slider, and a second elastic member for driving the slider to approach the mounting seat. The anti-sequential collapse device provided by the above embodiment can automatically disconnect the insulator string and the conductor in the event of a disaster, thereby preventing the adjacent transmission line tower from collapsing, thereby solving the problem of transmission line tower collapse.

Description

Technical Field

[0001] The invention relates to the field of electric power technology, and in particular to a series connection prevention device. Background Art

[0002] Transmission line engineering refers to the construction of transmission towers at certain intervals, the installation of high-voltage wires on the transmission line towers, and the suspension of high-voltage wires through insulator strings. It is often operated in locations with harsh environments, so transmission towers and high-voltage wires often face the challenges of various natural disasters.

[0003] There are two main types of natural disasters faced by power transmission line projects: one is natural disasters caused by extreme weather, such as typhoons and ice cover, and the other is secondary disasters caused by geological problems, such as mountain torrents, mud and rock flows, landslides, urban and rural waterlogging, etc. For the first type, the defense capability can be quantified by the design wind speed and design ice thickness parameters, while there is no clear quantifiable parameter for geological disasters.

[0004] For transmission lines, once the phenomenon of tower collapse occurs, since the transmission line towers are connected one by one through insulator strings and conductors, it is very likely that a series of towers will fall due to the heavy load during the process of tower collapse, which is often called string collapse and affected tower collapse. Summary of the invention

[0005] Based on this, it is necessary to provide an anti-collapse device that can solve the problem of transmission line tower collapsing.

[0006] A string-fall prevention device is used to connect an insulator string and a conductor, wherein the insulator string is fixed on a transmission line tower and used to suspend the conductor, and comprises a housing having a clamping channel, a connector movably arranged in the clamping channel and used to connect the insulator string or the conductor, and a clamping assembly used to clamp the connector;

[0007] The outer periphery of the connecting member is raised to form a convex portion, and the clamping assembly includes a mounting seat fixed in the clamping channel, a rotating arm rotatably arranged on the mounting seat, a first elastic member for driving the rotating arm to abut against the convex portion, a slider slidably arranged in the clamping channel, a connecting rod connecting the rotating arm and the slider, and a second elastic member for driving the slider to approach the mounting seat;

[0008] When the anti-series-reversal device exerts a force in a direction away from the protrusion, the connecting member drives the rotating arm to rotate in the direction of the slider, and the slider moves away from the mounting seat, thereby causing the connecting member to disengage from the clamping channel, and the insulator string is disconnected from the conductor.

[0009] In some embodiments of the anti-travelling device, a first limiter is provided on the mounting seat, and the first limiter is used to hold the end of the rotating arm away from the sliding block.

[0010] In some embodiments of the anti-sequential device, when the rotating arm extends along the radial direction of the clamping channel, the rotating arm abuts against the first limiting member.

[0011] In some embodiments of the anti-reversal device, a slide groove adapted to the slider is opened on the shell, the slider is slidably arranged in the slide groove, and the second elastic member is received in the slide groove.

[0012] In some embodiments of the anti-sequential device, the anti-sequential device also includes a covering member that covers the clamping channel and the sliding groove, the covering member is fixedly connected to the shell, and the two ends of the second elastic member are respectively abutted against the slider and the covering member.

[0013] In some embodiments of the anti-sequential device, the anti-sequential device also includes a second limiting member, a through hole connected to the slide groove is opened on the shell, and the second limiting member is embedded and fixed in the through hole to support one end of the sliding block away from the second elastic member.

[0014] In some embodiments of the anti-series-reversal device, the connector further includes an extension portion extending axially along the clamping channel, the extension portion is used to connect to the insulator string or the conductor, and the protrusion is arranged around the extension portion.

[0015] In some embodiments of the anti-trash-reversal device, there are multiple clamping assemblies, and the multiple clamping assemblies are arranged around the extension portion.

[0016] In some embodiments of the anti-string-reversal device, the number of the connecting members is two, the two connecting members are arranged opposite to each other, and are respectively used to connect the insulator string and the conductor.

[0017] In some embodiments of the anti-tandem device, the first elastic member is a spiral spring, and the second elastic member is a linear spring.

[0018] Implementing the embodiments of the present invention will have the following beneficial effects:

[0019] According to the anti-sequential collapse device provided by the above embodiment, under normal conditions, the rotating arm abuts against the convex part of the connecting member under the action of the first elastic member, and the force applied by the second elastic member to the slider also acts on the rotating arm through the transmission of the connecting rod, so that the insulator string and the conductor can be connected through the anti-sequential collapse device. When a geological disaster occurs and causes one of the transmission line towers to fall, the transmission line tower applies an axial force to the anti-sequential collapse device through the conductor or the insulator string. After receiving the force, the connecting member moves away from the clamping channel, and drives the rotating arm to compress the first elastic member and rotate in the direction of the slider. Under the action of the connecting rod, the slider compresses the second elastic member and slides in the direction away from the mounting seat, so that the height of the rotating arm in the radial direction is reduced. When the connecting member loses the force of the rotating arm, the connecting member can be separated from the clamping channel, so that the insulator string is disconnected from the conductor. The anti-sequential collapse device provided by the above embodiment can automatically disconnect the insulator string and the conductor when a disaster occurs, thereby preventing the adjacent transmission line tower from falling, thereby solving the problem of transmission line tower collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] in:

[0022] Figure 1 A schematic diagram of the structure of an anti-sequential connection device provided in an embodiment.

[0023] Reference numerals:

[0024] 100-Anti-reverse device;

[0025] 110-housing, 110a-clamping channel, 110b-sliding groove;

[0026] 120-connecting member, 122-convex portion, 124-extension portion;

[0027] 130-clamping assembly, 131-mounting seat, 1312-first position-limiting member, 132-rotating arm, 133-first elastic member, 134-sliding block, 135-connecting rod, 136-second elastic member;

[0028] 140-covering member;

[0029] 150-Second limiter. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0033] See also Figure 1 The embodiment of the present invention provides a string-reversal prevention device 100, which is used to connect an insulator string and a conductor. The insulator string is fixed on a transmission line tower and used to suspend the conductor. The device comprises a housing 110 having a clamping channel 110a, a connector 120 movably disposed in the clamping channel 110a and used to connect the insulator string or the conductor, and a clamping assembly 130 for clamping the connector 120. The outer periphery of the connector 120 protrudes to form a convex portion 122. The clamping assembly 130 comprises a mounting seat 131 fixed in the clamping channel 110a, a rotating arm 132 rotatably disposed on the mounting seat 131, a first elastic member 133 for driving the rotating arm 132 to abut against the convex portion 122, a slider 134 slidably disposed in the clamping channel 110a, a connecting rod 135 connecting the rotating arm 132 and the slider 134, and a second elastic member 136 for driving the slider 134 to approach the mounting seat 131. When the anti-series reverse device 100 exerts force in a direction away from the protrusion 122, the connector 120 drives the rotating arm 132 to rotate in the direction of the slider 134, and the slider 134 moves away from the mounting seat 131, thereby causing the connector 120 to disengage from the clamping channel 110a, and the insulator string is disconnected from the conductor.

[0034] According to the anti-series-reversal device 100 provided in the above embodiment, under normal conditions, the rotating arm 132 abuts against the protrusion 122 of the connecting member 120 under the action of the first elastic member 133, and the force applied by the second elastic member 136 to the slider 134 is also transmitted to the rotating arm 132 through the connecting rod 135, so that the insulator string and the conductor can be connected through the anti-series-reversal device 100.

[0035] When a geological disaster occurs and causes one of the transmission line towers to fall, the transmission line tower applies an axial force to the anti-fall device 100 through the conductor or the insulator string. After receiving the force, the connector 120 moves away from the clamping channel 110a, and drives the rotating arm 132 to compress the first elastic member 133 and rotate in the direction of the slider 134. Under the action of the connecting rod 135, the slider 134 compresses the second elastic member 136 and slides in the direction away from the mounting seat 131, so that the height of the rotating arm 132 in the radial direction is reduced. When the connector 120 loses the force of the rotating arm 132, the connector 120 can be separated from the clamping channel 110a, so that the insulator string is disconnected from the conductor.

[0036] The anti-series collapse device 100 provided in the above embodiment can automatically disconnect the insulator string and the conductor when a disaster occurs, thereby preventing the adjacent transmission line towers from collapsing, thereby solving the problem of series collapse of transmission line towers.

[0037] It should be noted that an insulator string refers to an assembly of two or more insulator elements combined together to flexibly suspend the conductor. An insulator string is a protective device with fixing and operation requirements, used to suspend the conductor and insulate the conductor from the tower and the ground.

[0038] The insulator strings used in transmission lines have different assembly types due to differences in tower structure, insulator structure type, conductor size, number of sub-conductors per phase, and voltage level. However, they can be generally divided into two categories: suspension insulator strings and tension insulator strings.

[0039] In this embodiment, the insulator string is a tension insulator string.

[0040] Please continue reading Figure 1 In one embodiment, a first stopper 1312 is disposed on the mounting seat 131 , and the first stopper 1312 is used to support an end of the rotating arm 132 away from the slider 134 .

[0041] In this embodiment, the design of the first stopper 1312 can prevent the rotating arm 132 from excessively rotating in a direction away from the slider 134, thereby causing the rotating arm 132 to separate from the protrusion 122 in this direction. Furthermore, the first stopper 1312 can also support the rotating arm 132 to prevent the connecting member 120 and the rotating arm 132 from swinging left and right due to external interference.

[0042] In a specific embodiment, when the rotating arm 132 extends radially along the clamping channel 110a, the rotating arm 132 abuts against the first stopper 1312. In this way, the abutting surface between the protrusion 122 and the rotating arm 132 is a plane, so that the connection between the connecting member 120 and the rotating arm 132 is more stable under normal conditions.

[0043] Specifically, the first limiting member 1312 is a cylinder formed on the mounting seat 131 and protruding toward the rotating arm 132 .

[0044] In another embodiment provided by the present invention, a slide groove 110b adapted to the slider 134 is provided on the housing 110, the slider 134 is slidably disposed in the slide groove 110b, and the second elastic member 136 is received in the slide groove 110b. The design of the slide groove 110b in this embodiment can make the movement of the slider 134 more stable, and reduce the occurrence of the phenomenon of the slider 134 getting stuck when moving.

[0045] In a specific embodiment, the anti-reversal device 100 also includes a cover member 140 that covers the clamping channel 110a and the slide groove 110b. The cover member 140 is fixedly connected to the shell 110, and the two ends of the second elastic member 136 are respectively in contact with the slider 134 and the cover member 140.

[0046] It is worth mentioning that in this embodiment, the cover 140 and the housing 110 are designed to be separated. For processing the housing 110, the extrusion or die-casting process can be used for manufacturing, and the cost is relatively low. However, if the cover 140 and the housing 110 are integrally formed, it is difficult to use the above process to manufacture, which increases the manufacturing cost.

[0047] Of course, there must be a hole in the middle of the cover member 140 for the connector 120 to pass through.

[0048] In a more specific embodiment, the anti-reversal device 100 also includes a second limit member 150. A through hole connected to the slide groove 110b is opened on the shell 110. The second limit member 150 is embedded and fixed in the through hole to support one end of the slider 134 away from the second elastic member 136.

[0049] In this embodiment, the second stopper 150 can prevent the slider 134 from excessively moving toward the mounting seat 131 , thereby preventing the rotating arm 132 from rotating away from the slider 134 and disengaging from the protrusion 122 .

[0050] Furthermore, the second limiting member 150 provided in this embodiment can be used in conjunction with the first limiting member 1312 to provide a double protection.

[0051] In addition, compared with the second limiting member 150 and the housing 110 being integrally formed or other structures, the solution provided in this embodiment has a relatively low manufacturing cost and only requires drilling and assembly.

[0052] Preferably, the through hole is a threaded hole, and the second limiting member 150 is a stud.

[0053] Please refer again Figure 1 In another embodiment provided by the present invention, the connector 120 further includes an extension portion 124 extending axially along the clamping channel 110a, the extension portion 124 is used to connect to the insulator string or the conductor, and the protrusion 122 is arranged around the extension portion 124.

[0054] In this way, when assembling the connecting member 120 and the clamping assembly, there is no need to pay attention to the relative angle between the connecting member 120 and the clamping assembly, which facilitates assembly.

[0055] In a specific embodiment, there are multiple clamping assemblies 130, and the multiple clamping assemblies 130 are arranged around the extension portion 124. With the anti-reversal device 100 provided in this embodiment, the connection between the connector 120 and the clamping assemblies 130 is more stable, and the force applied to the protrusion 122 can be adjusted by adjusting the number of the clamping assemblies 130.

[0056] Of course, when the number of the clamping components 130 is plural, the number of the sliding grooves 110b, through holes and other related structures is also plural.

[0057] In a more specific embodiment, there are two connectors 120, which are arranged opposite to each other and are used to connect the insulator string and the conductor respectively. When the transmission line tower falls, the insulator string and the conductor can drive the corresponding connector 120 to leave the clamping channel 110a, so as to avoid the phenomenon that one of them is stuck and causes the adjacent transmission line tower to fall.

[0058] Preferably, the first elastic member 133 is a spiral spring, and the second elastic member 136 is a linear spring.

[0059] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An anti-stringing device, used to connect an insulator string and a conductor, wherein the insulator string is fixed on a transmission line tower and used to suspend the conductor, characterized in that: It comprises a housing having a clamping channel, a connector movably arranged in the clamping channel and used to connect the insulator string or the conductor, and a clamping assembly used to clamp the connector; The outer periphery of the connecting member is raised to form a convex portion, and the clamping assembly includes a mounting seat fixed in the clamping channel, a rotating arm rotatably arranged on the mounting seat, a first elastic member for driving the rotating arm to abut against the convex portion, a slider slidably arranged in the clamping channel, a connecting rod connecting the rotating arm and the slider, and a second elastic member for driving the slider to approach the mounting seat; When the anti-series-reversal device exerts a force in a direction away from the protrusion, the connecting member drives the rotating arm to rotate in the direction of the slider, and the slider moves away from the mounting seat, thereby causing the connecting member to disengage from the clamping channel, and the insulator string is disconnected from the conductor.

2. The anti-traffic device according to claim 1, characterized in that: The mounting seat is provided with a first limiting member, and the first limiting member is used to resist an end of the rotating arm away from the sliding block.

3. The anti-traffic device according to claim 2, characterized in that: When the rotating arm extends along the radial direction of the clamping channel, the rotating arm abuts against the first limiting member.

4. The anti-traffic device according to claim 1, characterized in that: The housing is provided with a slide groove adapted to the slider, the slider is slidably arranged in the slide groove, and the second elastic member is received in the slide groove.

5. The anti-traffic device according to claim 4, characterized in that: The anti-reversal device also includes a covering member for covering the clamping channel and the sliding groove, the covering member is fixedly connected to the shell, and two ends of the second elastic member are respectively in contact with the slider and the covering member.

6. The anti-traffic device according to claim 5, characterized in that: The anti-reversal device also includes a second limiting member. A through hole connected to the slide groove is opened on the shell. The second limiting member is embedded in and fixed in the through hole to support the end of the sliding block away from the second elastic member.

7. The anti-traffic device according to any one of claims 1 to 6, characterized in that: The connector also includes an extension portion extending along the axial direction of the clamping channel, the extension portion is used to be connected to the insulator string or the conductor, and the protrusion is arranged around the extension portion.

8. The anti-traffic device according to claim 7, characterized in that: There are multiple clamping components, and the multiple clamping components are arranged around the extending portion.

9. The anti-traffic device according to claim 6, characterized in that: The number of the connecting members is two, and the two connecting members are arranged opposite to each other and are used to connect the insulator string and the conductor respectively.

10. The anti-traffic device according to any one of claims 1 to 6, characterized in that: The first elastic member is a spiral spring, and the second elastic member is a linear spring.

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