Maintenance-friendly lightning arrester

Abstract

The utility model relates to the technical field of high-voltage lightning arrester, specifically to an arrester that is easy to maintain, including an insulating rod, the bottom of the insulating rod is welded to the top of a fixed stand, a contact protection layer is provided above the inner wall of the insulating rod, the inner wall of the insulating rod is located at a lower position and is rotatably connected to a driving gear through a mounting frame, the driving gear is meshingly connected to a driven gear, a lead screw is passed through and installed at the axis of the driven gear, the lead screw is rotatably connected to the inside of the insulating rod through a bearing installed inside the insulating rod, and a lightning rod is threadedly connected to the surface of the lead screw. The improved arrester that is easy to maintain, through the transmission structure of the gear, the lead screw drives the lightning rod to rise and fall inside the insulating rod, and the brush head attached to its outer wall is used to clean the surface of the rising and falling lightning rod, which can avoid the tediousness of manual direct contact wiping and improve the convenience and safety of maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage lightning protection, in particular to a lightning arrester which is easy to maintain. Background Art

[0002] High voltage refers to the distribution line with an AC voltage of more than 1000V or a DC voltage of more than 1500V. Low voltage refers to AC voltage below 1000V or DC voltage below 1500V, which is usually presented in the form of a high-voltage tower made of steel.

[0003] A lightning arrester is an electrical device used to protect electrical equipment from high transient overvoltage hazards and to limit the follow-through time and often also the follow-through amplitude.

[0004] In the process of realizing the utility model, the inventors found that the prior art had the following problems: 1. Dust or other stains are easily accumulated on the surface of the lightning arrester during use, and it is often necessary to manually perform regular maintenance and cleaning to avoid affecting the subsequent use effect; 2. Under normal circumstances, the maintenance cycle of the lightning arrester is one to two years, but it is not ruled out that the maintenance cycle may be shortened due to problems in the usage scenario, and most maintenance methods are to remove rust from the surface, but no matter which operation method is used, it is necessary to directly connect to the top component of the lightning arrester, which is time-consuming and labor-intensive, and there are certain risks. Utility Model Content

[0005] The utility model aims to provide a lightning arrester that is easy to maintain, so as to solve the problem in the above-mentioned background technology that the arrester needs to be disassembled for maintenance and the operation process is relatively cumbersome, which may easily cause certain safety hazards. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lightning arrester that is easy to maintain, comprising an insulating rod, the bottom of the insulating rod is welded to the top of a fixed stand, a contact protection layer is provided above the inner wall of the insulating rod, the inner wall of the insulating rod is located at a lower position and is rotatably connected to a driving gear through a mounting frame, the driving gear is meshingly connected to a driven gear, a lead screw is passed through and installed at the axis of the driven gear, the lead screw is rotatably connected to the inside of the insulating rod through a bearing installed inside the insulating rod, a lightning rod is threadedly connected to the surface of the lead screw, the outer wall of the lightning rod is respectively fitted with a first inner protection component and a second inner protection component, the first inner protection component is located above the second inner protection component, the first inner protection component and the second inner protection component are respectively passed through and installed in a cavity opened by the contact protection layer, the first inner protection component and the second inner protection component are respectively connected to the outer protection component through pipes, the outer protection component is installed on one end of the outer wall of the insulating rod by bolts, and a sealing plate is provided on the top of the contact protection layer.

[0006] The first inner protective component includes an inner liquid storage tank and a reflux groove, which are glued together as a whole. A groove for fitting and connecting a brush head is provided on one side of the surface of the inner liquid storage tank. The reflux groove is located below the brush head, and the brush head is installed on the inner wall of the contact protective layer by a fixing rod passing through its axis.

[0007] The outer protection component includes an outer liquid storage box and an air intake cavity. The outer liquid storage box is connected to the inner liquid storage box through pipes running through the insulating rods. A push rod is installed inside the air intake cavity, and a piston is glued to one end of the push rod.

[0008] Further preferably, the driving gear is provided with a handle through a shaft rod passing through its axis, and the handle is located outside the insulating rod, and the lightning rod forms a lifting structure inside the insulating rod through a screw, and at the same time, limiting grooves and sliding blocks for slidingly connecting the lightning rod are respectively provided on both sides of the inner wall of the insulating rod.

[0009] Further preferably, a conductor with an insulating coating on the outside is provided on one side of the lightning rod, a through hole for wiring is provided through one end of the insulating rod, and a plurality of cable ducts for clamping the conductors are glued and connected to the surface of the insulating rod.

[0010] Further preferably, the sealing plates are provided in two groups, and the sealing plates respectively form a telescopic structure in an arc-shaped sliding groove provided above the inner wall of the contact protection layer through a spring provided at one end thereof.

[0011] Further preferably, the first inner protection component and the second inner protection component are respectively provided with two groups, and the second inner protection component has the same structure as the first inner protection component, and the brush heads are respectively rollingly connected to the surface of the fixed rod, and at the same time, the surface of the reflux groove is provided with a through hole for connecting to the inner liquid storage tank.

[0012] Further preferably, the piston is made of rubber material, and the piston forms a sliding structure inside the air intake chamber through a push rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, the lead screw drives the lightning rod to rise and fall inside the insulating rod through the transmission structure of the gear, and the surface of the lightning rod is cleaned by the brush head attached to the outer wall thereof, thereby avoiding the tediousness of manual direct contact and wiping of the lightning rod, and improving the convenience of maintenance. The movable telescopic structure of the sealing plate above can be adjusted accordingly with the rise and fall of the lightning rod and is presented on the surface area of ​​the contact protection layer, which effectively provides protection without causing any obstruction during the operation of the lightning rod.

[0015] In the utility model, when the lightning rod is undergoing a rust removal or dust removal process, the internal air pressure is changed by the movement of a piston through an external liquid storage tank, and the medium is then transmitted to the interior of a component for painting the lightning rod by the air pressure. This operation method not only provides a medium source quickly, but also effectively avoids the problem of electromechanical damage caused by lightning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the insulating rod of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the outer protection component of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the contact type protective layer of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first inner protection component of the utility model.

[0021] In the figure: 1. insulating rod; 2. fixed stand; 3. contact protection layer; 4. driving gear; 5. driven gear; 6. lead screw; 7. lightning rod; 8. first inner protection assembly; 801. inner liquid storage tank; 802. reflux tank; 803. brush head; 804. fixed rod; 9. second inner protection assembly; 10. outer protection assembly; 1001. outer liquid storage tank; 1002. air inlet chamber; 1003. push rod; 1004. piston; 11. sealing plate; 12. cable duct. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 5The utility model provides a technical solution: a lightning arrester that is easy to maintain, including an insulating rod 1, the bottom of the insulating rod 1 is welded to the top of a fixed stand 2, a contact protection layer 3 is provided above the inner wall of the insulating rod 1, the inner wall of the insulating rod 1 is located at a lower part and is rotatably connected to a driving gear 4 through a mounting frame, the driving gear 4 is meshedly connected to a driven gear 5, a lead screw 6 is passed through and installed at the axis of the driven gear 5, the lead screw 6 is rotatably connected to the inside of the insulating rod 1 through a bearing installed inside the insulating rod 1, a lightning rod 7 is threadedly connected to the surface of the lead screw 6, the outer wall of the lightning rod 7 is respectively fitted and connected with a first inner protection component 8 and a second inner protection component 9, the first inner protection component 8 is located above the second inner protection component 9, the first inner protection component 8 and the second inner protection component 9 are respectively passed through and installed in the cavity opened by the contact protection layer 3, the first inner protection component 8 and the second inner protection component 9 are respectively connected to the outer protection component 10 through pipes, the outer protection component 10 is installed on one end of the outer wall of the insulating rod 1 by bolts, and a sealing plate 11 is provided on the top of the contact protection layer 3.

[0024] The first inner protection component 8 includes an inner liquid storage tank 801 and a reflux groove 802, which are glued together as a whole. A groove for fitting and connecting a brush head 803 is provided on one side of the surface of the inner liquid storage tank 801. The reflux groove 802 is located below the brush head 803. The brush head 803 is installed on the inner wall of the contact protection layer 3 through a fixing rod 804 running through its axis.

[0025] The outer protection component 10 includes an outer liquid storage tank 1001 and an air intake chamber 1002. The outer liquid storage tank 1001 is connected to the inner liquid storage tank 801 through pipes running through the insulating rod 1. A push rod 1003 is installed inside the air intake chamber 1002, and a piston 1004 is glued to one end of the push rod 1003.

[0026] In this embodiment, Figure 2 As shown, the driving gear 4 is provided with a handle through a shaft rod passing through the axis center thereof, and the handle is located outside the insulating rod 1, and the lightning rod 7 forms a lifting structure inside the insulating rod 1 through a lead screw 6, and at the same time, limiting grooves and sliders for slidingly connecting the lightning rod 7 are respectively provided on both sides of the inner wall of the insulating rod 1; compared with the manual direct contact maintenance method, the telescopic structure of the lightning rod 7 is utilized so that during the telescopic process, the brush head 803 attached to the outer wall thereof is used to treat its surface, thereby effectively removing stains attached to the surface.

[0027] In this embodiment, Figure 1 and Figure 2As shown, a conductor with an external insulating coating is provided on one side of the lightning rod 7, and a through hole for wiring is provided at one end of the insulating rod 1, and a plurality of wire ducts 12 for clamping the wires are glued and connected on the surface of the insulating rod 1; the bottom of the lightning rod 7 is connected to the high-voltage equipment and the ground wire buried in the ground through a wire running through the outside of the insulating rod 1, and after the charge is collected, the charge is introduced into the ground through the wire and the grounding body, so as to reduce the damage of the high-voltage equipment to the lightning. It should be noted that when the wire is laid, the length of the wire located on the surface of the insulating rod 1 must meet the maximum form distance of the lightning rod 7 rising, and when the wire rises and falls with the lightning rod 7, it slides accordingly in the wire duct 12 on the surface of the insulating rod 1.

[0028] In this embodiment, Figure 4 As shown, two groups of sealing plates 11 are provided, and the sealing plates 11 respectively form a telescopic structure in the arc-shaped slide groove provided above the inner wall of the contact protection layer 3 through a spring provided at one end thereof; since the lightning rod 7 forms a lifting structure inside the insulating rod 1, and the hollow-out design at the top avoids the problem of water accumulation inside the insulating rod 1, the sealing plates 11 are provided to effectively avoid the occurrence of such problems. Since a spring is provided on one side of the sealing plate 11, when the lightning rod 7 rises after cleaning, its top outer wall will fit in the through hole between the sealing plates 11. As the lightning rod 7 continues to rise, the sealing plates 11 on both sides will be squeezed to a certain extent. At the same time, due to the elastic structure of the sealing plate 11, a corresponding part will shrink into the slide groove of the inner wall of the contact protection layer 3. The elastic structure of the sealing plate 11 will not only effectively provide protection but also will not cause obstruction during the operation of the lightning rod 7.

[0029] In this embodiment, Figure 4 and Figure 5As shown, the first inner protection component 8 and the second inner protection component 9 are respectively provided with two groups, and the second inner protection component 9 has the same structure as the first inner protection component 8, and the brush head 803 is respectively connected to the surface of the fixed rod 804 in a rolling manner, and at the same time, a through hole for penetrating and connecting the inner liquid storage tank 801 is provided on the surface of the reflux groove 802; when the lightning rod 7 is undergoing a rust removal or dust removal process, clean water or rust remover can be injected into the outer protection component 10, and then transported to the inside of the first inner protection component 8 and the second inner protection component 9 through a pipeline. When the medium for cleaning the surface of the lightning rod 7 is stored in the first inner protection component 8 and the second inner protection component 9, due to the rolling structure of the brush head 803 and the fiber material used therein, the brush head 803 can be used to remove the rust or dust from the surface of the lightning rod 7. The brush heads 803 attached to the outer wall of the lightning rod 7 can be rolled when the lightning rod 7 is raised or lowered, and the notch at one end of the inner liquid storage tank 801 can make the rolling brush heads 803 bring out the internal medium and coat it on the surface of the lightning rod 7. The brush heads 803 are arranged in two groups, upper and lower, in parallel, and completely attached to the outer wall edge of the lightning rod 7. Daily maintenance is achieved without direct manual contact, which effectively improves the safety during daily inspection and maintenance. The reflux groove 802 arranged below the brush heads 803 can receive the medium dripped by the brush heads 803 during the rolling and brushing process. The reflux groove 802 and the inner liquid storage tank 801 are provided with a through hole for communication, and the medium will flow into the inner liquid storage tank 801 again.

[0030] In this embodiment, Figure 3 As shown, the piston 1004 is made of rubber material, and the piston 1004 forms a sliding structure inside the air inlet chamber 1002 through the push rod 1003; since the equipment is installed on the top of the high-voltage tower through the fixed stand 2, it will directly contact with lightning. In order to avoid the problem of damage caused by short circuit caused by lightning when using water pump equipment, a medium for cleaning the lightning rod 7 is injected into the inside of the external liquid storage tank 1001, and the push rod 1003 is used to push the piston 1004 to move, thereby changing the pressure inside the external liquid storage tank 1001. When the piston 1004 is pushed forward, the internal space is reduced, and the positive pressure generated will discharge the medium into the first inner protection component 8 and the second inner protection component 9 through the pipeline. This operation method can effectively avoid the problem of damage to internal parts caused by lightning and provide a medium source for subsequent cleaning.

[0031] The use method and advantages of the utility model: The arrester which is easy to maintain, when in use, the working process is as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, first, the device is installed on the upper platform of the high-voltage equipment through a fixed stand 2. During daily use, the lightning rod 7 is located outside and in contact with the outside world, and the high-voltage equipment is connected to the ground wire through it. When maintenance is required, people are transported to the top through a lifting platform, and a medium for cleaning the lightning rod 7 is poured into the interior of the external liquid storage tank 1001. The piston 1004 is pushed to move toward the interior of the air inlet chamber 1002 by the push rod 1003. At this time, the internal space of the external liquid storage tank 1001 is reduced, and the positive pressure generated will discharge the medium into the first inner protection component 8 and the second inner protection component 9 through the pipeline. At the same time, the handle outside the insulating rod 1 is turned as the active gear The wheel 4 rotates, and the driven gear 5 rotates accordingly to drive the lead screw 6 to rotate, so that the lightning rod 7 threadedly connected thereto descends, and the limiting slide groove and the slider on the inner wall of the insulating rod 1 are connected to the outer wall of the lightning rod 7, effectively ensuring its lifting trajectory. During the descent of the lightning rod 7, the brush heads 803 attached to its outer wall roll respectively, and the rolling brush heads 803 bring out the medium in the inner liquid storage tank 801 and coat it on the surface of the lightning rod 7. When the brush heads 803 are rolling and coating, the dripping medium will fall into the reflux groove 802 and return to the inner liquid storage tank 801, and the upper sealing plate 11 will change the size of its area on the surface of the contact protection layer 3 accordingly as the lightning rod 7 rises and falls.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lightning arrester that is easy to maintain, comprising an insulating rod (1), characterized in that: The bottom of the insulating rod (1) is welded to the top of the fixed stand (2); a contact protection layer (3) is provided above the inner wall of the insulating rod (1); a driving gear (4) is rotatably connected to the inner wall of the insulating rod (1) through a mounting frame; the driving gear (4) is meshingly connected to a driven gear (5); a lead screw (6) is passed through and installed at the axis of the driven gear (5); the lead screw (6) is rotatably connected to the inside of the insulating rod (1) through a bearing installed inside the insulating rod (1); a lightning rod (7) is threadedly connected to the surface of the lead screw (6); the lightning rod (7) is The outer wall is respectively fitted with a first inner protection component (8) and a second inner protection component (9), the first inner protection component (8) is located above the second inner protection component (9), the first inner protection component (8) and the second inner protection component (9) respectively penetrate and are installed in the cavity opened by the contact protection layer (3), the first inner protection component (8) and the second inner protection component (9) are respectively connected to the outer protection component (10) through pipes, the outer protection component (10) is installed on one end of the outer wall of the insulating rod (1) by bolts, and a sealing plate (11) is opened on the top of the contact protection layer (3); The first inner protection component (8) comprises an inner liquid storage box (801) and a reflux groove (802), the inner liquid storage box (801) and the reflux groove (802) are glued together as a whole, a groove for fitting and connecting a brush head (803) is provided on one side of the surface of the inner liquid storage box (801), the reflux groove (802) is located below the brush head (803), and the brush head (803) is mounted on the inner wall of the contact protection layer (3) via a fixing rod (804) penetrating through the axis of the brush head (803); The outer protection component (10) comprises an outer liquid storage tank (1001) and an air intake chamber (1002); the outer liquid storage tank (1001) is connected to the inner liquid storage tank (801) via pipes passing through the insulating rod (1); a push rod (1003) is installed inside the air intake chamber (1002); one end of the push rod (1003) is glued to a piston (1004).

2. The lightning arrester easy to maintain according to claim 1, characterized in that: The driving gear (4) is provided with a handle through a shaft rod penetrating the shaft center thereof, and the handle is located outside the insulating rod (1). The lightning rod (7) forms a lifting structure inside the insulating rod (1) through a lead screw (6), and a limit groove and a sliding block for slidingly connecting the lightning rod (7) are respectively provided on both sides of the inner wall of the insulating rod (1).

3. The lightning arrester easy to maintain according to claim 1, characterized in that: A conductor coated with an insulating coating is provided on one side of the lightning rod (7), a through hole for wiring is provided through one end of the insulating rod (1), and a plurality of wire ducts (12) for clamping the wires are glued and connected to the surface of the insulating rod (1).

4. The lightning arrester easy to maintain according to claim 1, characterized in that: The sealing plates (11) are provided in two groups, and the sealing plates (11) respectively form a telescopic structure in an arc-shaped sliding groove provided above the inner wall of the contact protection layer (3) through a spring provided at one end thereof.

5. The lightning arrester easy to maintain according to claim 1, characterized in that: The first inner protection component (8) and the second inner protection component (9) are respectively provided with two groups, and the second inner protection component (9) has the same structure as the first inner protection component (8), and the brush head (803) is respectively connected to the surface of the fixed rod (804) in a rolling manner, and a through hole for penetrating and connecting to the inner liquid storage tank (801) is provided on the surface of the reflux groove (802).

6. The lightning arrester easy to maintain according to claim 1, characterized in that: The piston (1004) is made of rubber material, and the piston (1004) forms a sliding structure inside the air inlet chamber (1002) through the push rod (1003).

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