Environment-conditioned lightning arrester

Abstract

The present application relates to the technical field of lightning arresters, and discloses an environment-adjusted lightning arrester, which comprises a protective shell, a lifting platform slidingly arranged in the protective shell, a lightning arrester arranged on the lifting platform, a triggering member arranged below the protective shell and used for driving the lightning arrester to automatically contract, a lightning sensor arranged on the protective shell and used for detecting lightning activities, an opening and closing member arranged on the protective shell and used for being opened when the lifting platform is lifted and being closed when the lifting platform is lowered, so as to control the exposure or hiding state of the lightning arrester, and a mounting member arranged on the protective shell and used for fixing the protective shell on a crossbar. The triggering member based on wind force is arranged, so that when the wind speed is large, the lightning arrester body can be automatically contracted, the key parts such as the insulating umbrella skirt can be retracted into the protective shell, and the wind sand erosion and the insulation aging can be prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning arresters, and in particular to an environment-adjustable lightning arrester. BACKGROUND

[0002] As an important overvoltage protection device in power systems, the core function of lightning arresters is to timely introduce overcurrent into the ground when lightning or operating overvoltage occurs, protecting the safety of power equipment and lines. However, most traditional lightning arresters are fixed installation structures, which are exposed to the outdoor environment for a long time and are subject to erosion from harsh weather conditions such as wind, sand, strong winds, rain, and snow. In particular, in areas where sandstorms or strong winds frequently occur, the insulation components are prone to aging, the shed is prone to dust accumulation, and the performance is prone to degradation, which affects the reliability and safety of long-term operation.

[0003] Currently, some research has attempted to use sealed covers or manual adjustment mechanisms to improve the environmental adaptability of lightning arresters, but there are the following main problems:

[0004] Lack of environmental self-adaptability: Most existing devices are passive protection and cannot automatically adjust the extension state of the lightning arrester according to real-time wind speed, resulting in the inability to actively retract the lightning arrester body in extreme weather and the limited service life due to wind and sand erosion.

[0005] Inability to accurately maintain the working state when lightning is approaching: Although some automatic retracting lightning arresters can sense changes in wind speed and perform retraction actions, they lack a locking mechanism linked to lightning detection. If the lightning arrester is in a retracted state when lightning is about to occur, it may fail to restore the extended state in time, resulting in lightning failure and safety hazards. SUMMARY

[0006] To solve the technical problem of insulation failure caused by pollution of the lightning arrester in a windy and sandy environment, the present application provides an environment-adjustable lightning arrester.

[0007] The present application adopts the following technical solution: An environment-adjustable lightning arrester, comprising: a protective shell; a lifting platform slidingly arranged inside the protective shell; a lightning arrester installed on the lifting platform; a triggering assembly arranged below the protective shell for automatically retracting the lightning arrester; a lightning induction assembly arranged on the protective shell for detecting lightning activity; an opening and closing assembly arranged at the top of the protective shell for opening when the lifting platform rises and closing when the lifting platform descends to control the extension or retraction of the lightning arrester; and a mounting block arranged outside the protective shell for fixedly mounting the protective shell on a crossbar.

[0008] As a further improvement of the above-mentioned scheme, the opening and closing assembly comprises a cover plate arranged above the protective shell; a connecting rod mechanism arranged inside the protective shell and connected with the cover plate and the lifting platform for driving the cover plate to open and close and the lifting platform to lift.

[0009] As a further improvement of the above-mentioned scheme, the connecting rod mechanism comprises a first connecting rod group, the cover plate is connected with the protective shell through the first connecting rod group for driving the cover plate to open and close; and a second connecting rod group, the lifting platform is connected with the protective shell through the second connecting rod group for driving the lifting platform to lift.

[0010] As a further improvement of the above-mentioned scheme, the first connecting rod group comprises a gear wheel rotatably arranged in the protective shell; a first connecting rod having one end fixedly connected with the gear wheel and the other end rotatably connected with the cover plate; and a second connecting rod having one end rotatably connected with the protective shell and the other end rotatably connected with the cover plate; the first connecting rod and the second connecting rod are arranged in parallel to form a parallelogram mechanism. The second connecting rod group comprises a third connecting rod and a fourth connecting rod; the third connecting rod has one end fixedly connected with the gear wheel and the other end rotatably connected with the fourth connecting rod; and the fourth connecting rod has one end connected with the third connecting rod and the other end connected with the lifting platform.

[0011] As a further improvement of the above-mentioned scheme, the triggering assembly comprises a connecting sleeve arranged at the bottom of the protective shell; a wind cap arranged at the bottom of the connecting sleeve for detecting wind speed, the wind cap is provided with a mounting groove, and a bearing is arranged in the mounting groove; a rotating wheel rotatably arranged in the protective shell; a first sliding rod having one end connected with the lifting platform and the other end engaged with the rotating wheel; a second sliding rod having one end engaged with the rotating wheel and the other end connected with the outside of the bearing; a centrifugal member having one end rotatably connected with the wind cap and the other end rotatably connected with the connecting sleeve for lifting the wind cap according to the change of wind speed; and a compression spring arranged between the connecting rod and the bottom of the protective shell for elastic reset.

[0012] As a further improvement of the above-mentioned scheme, the lightning induction assembly comprises a lightning sensor arranged on the protective shell; a contact head arranged at one end of the second sliding rod; an electromagnet arranged at the bottom of the contact head for attracting the contact head; a second contact head arranged at one end of the first sliding rod; and a second electromagnet arranged at the bottom of the second contact head for attracting the second contact head.

[0013] As a further improvement of the above-mentioned scheme, the triggering assembly further comprises a force storage assembly.

[0014] As a further improvement of the above-mentioned scheme, the force storage assembly comprises a support rod slidingly arranged in the connecting sleeve, one end of which is connected with the wind cap and the other end of which is connected with the force storage block; the force storage block is provided with a first sliding groove and a second sliding groove, and a plurality of elastic clamping members are fixedly arranged around the force storage block.

[0015] As a further improvement of the above-mentioned scheme, the protective shell is provided with a rotatable back plate for facilitating maintenance or repair of the internal components of the protective shell in the open state.

[0016] The back plate is provided with a wire slot for accommodating a wire harness connected to the lightning arrester, so as to keep the cable guided and arranged neatly when the lightning arrester moves.

[0017] As a further improvement of the above-mentioned scheme,

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. Adaptability to sandy environment: By arranging a trigger based on wind force, the lightning arrester body can be automatically retracted when the wind speed is high, so that the key parts such as the insulating umbrella skirt are retracted into the protective shell, preventing wind sand erosion and insulation aging, and significantly improving the service life and operation reliability of the device.

[0020] 2. Arrangement of lightning sensor, contact head and double electromagnet combination: when lightning is about to occur, the locking path can be automatically selected according to the current state of the lightning arrester (extended or retracted): in the extended state, the first contact head is adsorbed with the first electromagnet to lock the lifting mechanism, ensuring that the lightning arrester continues to attract lightning; in the retracted state, the second contact head is controlled by the second electromagnet to make the lightning arrester automatically reset to the extended state by the compression spring when the wind speed decreases, and immediately locked by the first contact head and the first electromagnet, realizing effective response to lightning.

[0021] 3. Force storage assembly for triggering wind retraction, and position interlocking with double contact head / double electromagnet: when the elastic clamping members are clamped in the first or second sliding groove position, the contact head and the electromagnet can be contacted to complete the locking. This design ensures that the locking action only occurs in a safe position where the structure is completely in place, preventing locking failure due to inaccurate position or cover plate not fully opened, thereby improving the accuracy and safety of the system operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Figure 1 is a schematic diagram of the overall structure of the lightning arrester in the open state according to the present application;

[0023] Figure 2 Figure 2 is a rear view of the overall structure of the lightning arrester in the open state according to the present application;

[0024] Figure 3The closed state overall structure schematic diagram of the environment-adjustable lightning arrester of the present application;

[0025] Figure 4 The opened state internal structure schematic diagram of the environment-adjustable lightning arrester of the present application;

[0026] Figure 5 The opened state internal structure schematic diagram of the environment-adjustable lightning arrester of the present application; Figure 4 The structure enlarged view of A in the above figure;

[0027] Figure 6 The opened state structure front view of the environment-adjustable lightning arrester of the present application;

[0028] Figure 7 The opened state structure front view of the environment-adjustable lightning arrester of the present application; Figure 6 The structure enlarged view of B in the above figure;

[0029] Figure 8 The closed state structure front view of the environment-adjustable lightning arrester of the present application.

[0030] Main symbol explanation: protective shell (100), lifting platform (101), lightning arrester (102), triggering assembly (103), connecting sleeve (103a), wind cap (103b), bearing (103c), rotating wheel (103d), first sliding rod (103e), second sliding rod (103f), centrifugal piece (103g), compression spring (103h), lightning induction assembly (104), lightning sensor (104a), first contact head (104b), first electromagnet (104c), second contact head (104d), second electromagnet (104e), opening and closing assembly (105), cover plate (105a), connecting rod mechanism (105b), first connecting rod group (105b-1), cogwheel (105b-1a), first connecting rod (105b-1b), second connecting rod (105b-1c), second connecting rod group (105b-2), third connecting rod (105b-2a), fourth connecting rod (105b-2b), mounting block (106), force storage assembly (107), support rod (107a), force storage block (107b), first sliding groove (107c), second sliding groove (107d), elastic clamping piece (107e), back plate (108), wire slot (109). DETAILED DESCRIPTION

[0031] In the following, the present application is further described in combination with the drawings and the specific embodiments.

[0032] Please combine Figures 1 to 8The environment-adjustable lightning arrester comprises a protective shell 100, a lifting platform 101 slidingly arranged inside the protective shell 100, a lightning arrester 102 mounted on the lifting platform 101, a triggering assembly 103 arranged below the protective shell 100 for driving the lightning arrester 102 to automatically retract, a lightning induction assembly 104 arranged on the protective shell 100 for detecting lightning activities, an opening and closing assembly 105 arranged on the top of the protective shell 100 for opening when the lifting platform 101 rises and closing when the lifting platform 101 descends to control the extension or retraction of the lightning arrester 102, and a mounting block 106 arranged outside the protective shell 100 for fixing the protective shell 100 on a crossbar. In the embodiment, the protective shell 100 adopts a hollow structure for covering the lightning arrester 102 and its transmission and control assemblies. The top of the protective shell 100 is provided with an openable and closable cover plate 105a, and a set of connecting rod mechanisms 105b are arranged inside the cover plate 105a for realizing linkage control of lifting and opening and closing. One end of the connecting rod mechanism 105b is connected with the cover plate 105a, and the other end is connected with the lifting platform 101, so that the cover plate 105a is opened when the platform rises and closed when the platform descends, thereby guaranteeing the environmental sealing and synchronization of the opening and closing actions of the lightning arrester 102. The lifting platform 101 is slidingly arranged inside the protective shell 100 in the vertical direction for carrying and driving the lightning arrester 102 to lift. In the normal working state, the lifting platform 101 keeps rising, the lightning arrester 102 is exposed outside the shell, and the lightning arrester 102 has normal lightning attraction function. When in extreme weather conditions such as strong wind and sand, the platform descends to store the lightning arrester 102 in the shell for protection. The lightning arrester 102 in the application can adopt a conventional lightning attraction device, the lower part is fixedly connected with the lifting platform 101, and the top lightning attraction end can be connected to a lightning protection facility such as a grounding system.

[0033] The trigger assembly 103 comprises a connecting sleeve 103a arranged at the bottom of the protective shell 100, a wind cap 103b arranged at the bottom of the connecting sleeve 103a and used for detecting wind speed, the wind cap 103b being provided with a mounting groove in which a bearing 103c is arranged, a rotating wheel 103d rotatably arranged inside the protective shell 100, a first sliding rod 103e having one end connected to the lifting platform 101 and the other end engaged with the rotating wheel 103d, a second sliding rod 103f having one end engaged with the rotating wheel 103d and the other end connected to the outside of the bearing 103c, a centrifugal member 103g having one end rotatably connected to the wind cap 103b and the other end rotatably connected to the connecting sleeve 103a and used for lifting the wind cap 103b according to the change of wind speed, and a compression spring 103h arranged between the connecting rod and the bottom of the protective shell 100 and used for elastic reset. The wind cap 103b is rotatably arranged at the bottom of the device through the connecting sleeve 103a and is used for sensing the change of wind speed, the wind cap 103b is internally provided with a mounting groove for mounting a rotating block, the rotating block is connected to the centrifugal structure, and the centrifugal structure comprises a first connecting rod, a second connecting rod and a counterweight, wherein the counterweight is fixed to the first connecting rod. When the wind speed increases, the wind cap 103b starts to rotate under the driving of air flow, the counterweight generates a centrifugal force, and then the first connecting rod and the second connecting rod are gradually moved close to each other. When the centrifugal force reaches a set threshold value, the centrifugal mechanism drives the wind cap 103b to be lifted upward as a whole, so as to trigger the lifting mechanism to act.

[0034] During the upward movement of the wind cap 103b, the first sliding rod 103e connected thereto is moved upward. The other end of the first sliding rod 103e is connected to the sliding system in the protective shell 100 through the rotating wheel 103d, thereby forming a set of reversing mechanisms. The reversing mechanisms can convert the vertical upward thrust formed by the upward movement of the wind cap 103b into a downward driving force for driving the lifting platform 101, thereby driving the lightning arrester 102 to move downward and be accommodated in the protective shell 100.

[0035] The force storage assembly 107 comprises a supporting rod 107a slidably arranged in the connecting sleeve 103a, having one end connected to the wind cap 103b and the other end connected to a force storage block 107b, the force storage block 107b being provided with a first sliding groove 107c and a second sliding groove 107d and circumferentially distributed with a plurality of elastic clamping members 107e, and the elastic clamping member 107e comprising a mounting sleeve, an elastic spring and a clamping rod, the clamping rod being capable of being inserted into the first sliding groove 107c or the second sliding groove 107d to realize structural locking.

[0036] In the working process: when the elastic clamping member is clamped in the first sliding groove 107c, the contact head 104b at the end of the second sliding rod 103f is in contact with the first electromagnet 104c at the bottom thereof; and when the elastic clamping member is clamped in the second sliding groove 107d, the second contact head 104d at the end of the first sliding rod 103e is in contact with the second electromagnet 104e at the bottom thereof.

[0037] This design makes the contact head and the corresponding electromagnet can only contact and lock when the elastic clamping piece is clamped in the two slots, so as to ensure that the lightning arrester 102 can be reliably locked in the extended or retracted state when lightning and strong wind occur at the same time, and avoid misoperation caused by wind fluctuation.

[0038] In order to ensure the reliability of the lightning arrester 102 in thunderstorm weather, the lightning induction control mechanism is provided, and the lightning induction assembly 104 comprises: a lightning sensor 104a mounted on the protective shell 100; a contact head 104b and a corresponding first electromagnet 104c provided at the end of the second sliding rod 103f;

[0039] A second contact head 104d and a corresponding second electromagnet 104e are provided at the end of the first sliding rod 103e.

[0040] When the lightning sensor 104a detects that thunderstorm is coming, the system judges the current state of the lightning arrester 102:

[0041] If the lightning arrester is in the extended state, control the first electromagnet 104c to be powered on to attract and lock the contact head 104b to prevent the second sliding rod 103f from being retracted; if the lightning arrester is in the retracted state, control the second electromagnet 104e to be powered off to release the second contact head 104d, allowing the compression spring 103h to reset the lightning arrester 102 to the extended state, and then being locked by the first electromagnet 104c.

[0042] The cooperation of the double electromagnet and the force storage assembly makes the lightning arrester always maintain an effective lightning attracting posture in thunderstorm weather, and can resist the interference of wind speed fluctuation on the mechanism.

[0043] In order to realize the synchronous control of the cover plate 105a and the lifting action, the opening and closing assembly 105 is also provided, and the core is a set of connecting rod linkage structure.

[0044] The structure comprises: a third connecting rod 105b-2a, a fourth connecting rod 105b-2b, a residual gear 105b-1a, a first connecting rod 105b-1b, and a second connecting rod 105b-1c. The specific linkage process is as follows:

[0045] The lifting platform 101 rises → drives the fourth connecting rod 105b-2b to rotate along the connecting point of the fourth connecting rod 105b-2b and the third connecting rod 105b-2a;

[0046] When the fourth connecting rod 105b-2b tends to be vertical, it further drives the third connecting rod 105b-2a to rotate around the intersection of the third connecting rod 105b-2a and the residual gear 105b-1a;

[0047] The third connecting rod 105b-2a and the residual gear 105b-1a are fixedly connected, and the rotation of the third connecting rod 105b-2a drives the residual gear 105b-1a to rotate synchronously;

[0048] The residual gear 105b-1a is fixedly connected with the first connecting rod 105b-1b, and the first connecting rod 105b-1b is rotated at the same time, and synchronously drives the second connecting rod 105b-1c to rotate;

[0049] The first connecting rod 105b-1b and the second connecting rod 105b-1c constitute a parallelogram mechanism, and realize the opening and closing control of the cover plate 105a.

[0050] The following action linkage can be finally realized:

[0051] The lifting platform 101 rises → the cover plate 105a is opened;

[0052] The lifting platform 101 descends → the cover plate 105a is closed.

[0053] The structure makes the lightning arrester 102 opening and closing process consistent with the sealing state of the shell at all times, and improves the overall protection performance.

[0054] In order to improve the maintenance convenience, the back surface of the protective shell 100 is provided with a rotatable back plate 108 for opening the shell during maintenance; the back plate 108 is provided with a wire slot 109 for accommodating the wire harness connected to the lightning arrester 102, and the cable wiring is kept neat during the lifting process of the lightning arrester 102, preventing winding or pulling.

[0055] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. An environmentally regulated surge arrester, characterized in that, include: Protective housing (100); The lifting platform (101) is slidably disposed inside the protective housing (100); A surge arrester (102) is installed on the lifting platform (101); A triggering component (103) is located below the protective housing (100) and is used to drive the surge arrester (102) to retract automatically; A lightning sensing component (104) is disposed on the protective housing (100) for detecting lightning activity; An opening and closing assembly (105) is provided on the top of the protective housing (100) and is used to open when the lifting platform (101) rises and close when the lifting platform (101) falls, so as to control the extension or retraction of the surge arrester (102). Mounting block (106) is provided outside the protective shell (100) for fixing the protective shell (100) to the crossbar; The opening and closing assembly (105) includes a cover plate (105a) disposed above the protective housing (100); The linkage mechanism (105b) is located inside the protective housing (100) and is connected to both the cover plate (105a) and the lifting platform (101) to drive the opening and closing of the cover plate (105a) and the lifting platform (101). The first linkage group (105b-1) is used to drive the cover plate (105a) to open and close. The second linkage group (105b-2) is used to connect the lifting platform (101) to the protective shell (100) and drive the lifting platform (101) to rise and fall. The first linkage assembly (105b-1) includes: a residual gear (105b-1a), which is rotatably disposed within the protective housing (100); The first connecting rod (105b-1b) is fixedly connected at one end to the residual gear (105b-1a) and rotatably connected at the other end to the cover plate (105a); The second connecting rod (105b-1c) is rotatably connected at one end to the protective shell (100) and at the other end to the cover plate (105a); the first connecting rod (105b-1b) and the second connecting rod (105b-1c) are arranged in parallel to form a parallelogram mechanism. The second linkage group (105b-2) includes: a third connecting rod (105b-2a) and a fourth connecting rod (105b-2b); The third connecting rod (105b-2a) is fixedly connected at one end to the residual gear (105b-1a) and rotatably connected at the other end to the fourth connecting rod (105b-2b); The fourth connecting rod (105b-2b) is connected at one end to the third connecting rod (105b-2a) and at the other end to the lifting platform (101).

2. The environmentally regulated surge arrester as described in claim 1, characterized in that, The triggering component (103) includes: A connecting sleeve (103a) is provided at the bottom of the protective housing (100); A wind cap (103b) is located at the bottom of the connecting sleeve (103a) and is used to detect wind speed. The wind cap (103b) is provided with a mounting groove, and a bearing (103c) is provided in the mounting groove. A rotating wheel (103d) is rotatably mounted inside the protective housing (100); The first sliding rod (103e) is connected at one end to the lifting platform (101) and at the other end to the rotating wheel (103d); The second sliding rod (103f) is engaged at one end with the rotating wheel (103d) and at the other end with the outer side of the bearing (103c); The centrifugal component (103g) is rotatably connected at one end to the wind cap (103b) and at the other end to the connecting sleeve (103a), and is used to raise and lower the wind cap (103b) according to changes in wind speed. A compression spring (103h) is disposed between the first sliding rod (103e) and the bottom of the protective housing (100) for elastic reset.

3. The environmentally regulated surge arrester as described in claim 1, characterized in that, The lightning sensing component (104) includes: A lightning sensor (104a) is mounted on a protective housing (100). The first contact head (104b) is provided at one end of the second sliding rod (103f); The first electromagnet (104c) is disposed at the bottom of the first contact head (104b) for attracting the first contact head (104b). The second contact head (104d) is disposed at one end of the first sliding rod (103e); The second electromagnet (104e) is located at the bottom of the second contact head (104d) and is used to attract the second contact head (104d).

4. The environmentally regulated surge arrester as described in claim 2, characterized in that, The triggering component (103) also includes a power storage component (107).

5. The environmentally regulated surge arrester as described in claim 4, characterized in that, The power storage component (107) includes: a support rod (107a), which is slidably disposed in the connecting sleeve (103a), and one end is connected to the wind cap (103b); A power storage block (107b) is disposed at the other end of the support rod (107a); The energy storage block (107b) is provided with a first sliding groove (107c) and a second sliding groove (107d); Multiple elastic snap-fit ​​components (107e) are fixedly provided around the energy storage block (107b).

6. The environmentally regulated surge arrester as described in claim 1, characterized in that, The protective housing (100) is provided with a rotatable back plate (108) for easy maintenance or repair of the internal components of the protective housing (100) when it is open.

7. The environmentally regulated surge arrester as described in claim 6, characterized in that, The back plate (108) is provided with a wire groove (109) for accommodating the wire harness connected to the surge arrester (102) to keep the cable guided and neatly laid out when the surge arrester (102) moves.

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