Lightning current shunt with anti-reverse protection device

Abstract

The utility model discloses a lightning current shunt with an anti-reverse protection device, which relates to the technical field of lightning shunt of floating roof storage tanks and comprises a coil spring box and a steel braided shunt wire wound and accommodated on the coil spring box through a coil spring, and further comprises an adjusting unit and a limiting unit which are arranged on the coil spring box, the transfer unit comprises a wire outlet box, a bearing box, a servo motor, a bidirectional screw rod and a transverse batten; the limiting unit comprises a limiting sleeve, a supporting spring, a supporting frame and an abutting roller. According to the utility model, the two-way screw rod can be controlled to rotate forwards and backwards on the wire outlet box through the operation of the servo motor, and the two transverse battens which are in threaded connection with the two-way screw rod relatively move in the bearing box under the action of stress, so that the two groups of limiting units can be driven to adjust the distance; the steel braided shunt wire part can be clamped and fixed by the two groups of limiting units to complete locking so as to prevent the steel braided shunt wire from being affected by wind power, and the steel braided shunt wire locking operation is stable so that the volute spiral spring is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning current shunting for floating roof storage tanks, and particularly relates to a lightning current shunt with an anti-reverse protection device. Background Art

[0002] The traditional lightning protection and static electricity grounding method for the floating roof of crude oil storage tanks generally uses two 25mm2 soft copper stranded wires to connect the floating roof from the top of the tank wall with a length greater than the height of the tank. When the floating roof rises with the liquid level, the soft copper stranded wires are scattered on the floating roof. Due to the sulfur content in the crude oil and gas and the influence of wind and rain, the soft copper stranded wires are extremely easy to corrode, thus there are potential safety hazards. The existing lightning current shunts for external floating roof tanks are all fixed on one end of the shell and the rotating shaft in a non-flexible manner by a flat spiral spring. The steel braided shunt wire is fixedly wound around the other end of the rotating shaft. The expansion and contraction of the steel braided shunt wire are controlled by the elastic force of the flat spiral spring. In actual use, when the floating roof of the storage tank rises to the highest point, with the up and down floating of the storage tank and in windy weather, the steel braided shunt wire is driven, resulting in irregular extension and retraction. The frequent telescopic vibration will cause the flat spiral spring and its rotating shaft in the equipment to always rotate forward and backward, or reverse when the manual operation is improper. When reversing, mechanical interference occurs between the flat spiral spring and the rotating shaft, which is extremely easy to cause the fracture of the flat spiral spring.

[0003] The publication (announcement) number is CN208413525U, which discloses a lightning current shunt with a self-locking device, including a lightning current shunt structure. There is a flat spiral spring and a copper braid in the lightning current shunt structure. One end of the flat spiral spring is fixed on the shell of the lightning current shunt structure, and the other end is fixed on the main shaft connected to the reel; one end of the copper braid is fixed on the inner upper part of the reel in the lightning current shunt structure, and the other end passes through the self-locking device fixed on the lightning current shunt structure. This self-locking device can give a reaction force to the copper braid that is about to expand and contract in the swinging state, reduce its expansion and contraction speed, and keep the flat spiral spring in a stable state.

[0004] Although the above solution can avoid the rapid repeated expansion and contraction of the copper braid driving the spiral spring under the action of wind force through the self-locking device, the self-locking device presses the copper braid by the swinging part swinging under the action of wind force, and the locking effect of the copper braid is extremely unstable. The spiral spring will still be pulled and expanded and contracted by the wind force, and the protection effect of the equipment on the spiral spring is average. Therefore, we propose a lightning current shunt with an anti-reverse protection device. Content of the Utility Model

[0005] The main purpose of the present utility model is to provide a lightning current shunt with an anti-reverse protection device. By setting a mobilizing unit and a limiting unit, the problem that the copper braid is pressed by the swinging part swinging under the action of wind force, the locking effect of the copper braid is extremely unstable, the volute spring still stretches and retracts under the action of wind force, and the protection effect of the device on the volute spring is general is solved.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions: A lightning current shunt with an anti-reverse protection device, including a spring box and a steel braid shunt wire wound and stored on the spring box through a spring, further including: a mobilizing unit and a limiting unit provided on the spring box;

[0007] The mobilizing unit includes an outlet box, a bearing box, a servo motor, a bidirectional lead screw, and a transverse strip. The outlet box is fixedly arranged on the outer peripheral surface of the bottom end of the spring box. The bearing box is fixedly arranged at the bottom end of the outlet box, and an outlet through groove with a position size matching the position and the inner diameter size of the end of the outlet box is opened at the center of the bottom surface of the bearing box. The steel braid shunt wire is led into the interior of the outlet box and extends to the outside of the bearing box through the outlet through groove. The servo motor is fixedly installed on the inner wall of one end of the bearing box. The bidirectional lead screw is arranged at the output end of the servo motor. There are two transverse strips in total, and they respectively cooperate with the symmetrically arranged positive and negative two sections of threads on the bidirectional lead screw;

[0008] The limiting unit includes a limiting sleeve, a support spring, a support frame, and an abutting roller. The limiting sleeve is fixedly arranged at the center of the side surface of the transverse strip facing the vertical central axis of the bearing box. One end of the support spring is fixedly connected to the transverse strip and is located inside the limiting sleeve. The support frame is in a "U" shape and is fixedly arranged at the other end of the support spring. A rotating rod is installed on the support frame. The abutting roller is sleeved on the outer peripheral surface of the rotating rod. There are two groups of limiting units, which are arranged oppositely on the two transverse strips.

[0009] Preferably, the mobilizing unit further includes a guide rod, and the guide rod is fixedly arranged on the inner wall of the other end of the bearing box and movably penetrates through the two transverse strips.

[0010] Preferably, the support spring is arranged parallel to the bidirectional lead screw.

[0011] Preferably, the abutting roller is arranged perpendicular to the bidirectional lead screw.

[0012] Preferably, an "L"-shaped mounting plate is fixedly arranged on the outer peripheral surface of the spring box, and mounting holes are opened on the mounting plate.

[0013] Preferably, a reinforcing plate is fixedly arranged at the bottom end of the outlet box, and the reinforcing plate is connected to the bearing box by screws.

[0014] Compared with the prior art, the lightning current shunt with an anti-reverse protection device of the present utility model has the following beneficial effects:

[0015] 1. In the present utility model, by setting the adjustment unit, the steel braided shunt wire wound and stored on the spring box is introduced into the wire outlet box and extends to the outside of the bearing box through the wire outlet slot, and then can pass between the two limiting units. By the operation of the servo motor, the bidirectional lead screw can rotate forward and backward on the wire outlet box. The two transverse strips threadedly connected to the bidirectional lead screw move relative to each other in the bearing box under the action of force, which can drive the two limiting units to adjust the distance. The guide rod is set to guide the sliding and translation of the transverse strip to cooperate with its adjustment and provide auxiliary support for it. The part of the steel braided shunt wire located inside the bearing box can be clamped and fixed by the two limiting units to complete the locking, avoiding it being affected by the wind force. The locking operation of the steel braided shunt wire is stable, effectively protecting the scroll spring.

[0016] 2. In the present utility model, by setting the limiting unit, the support spring that supports and fixes the support frame can help the abutting roller on the support frame to flexibly abut against the steel braided shunt wire under the limitation of the limiting sleeve. Moreover, when the steel braided shunt wire is pulled and adjusted with the rise and fall of the storage tank floating roof, the support spring can deform and stretch to loosen the steel braided shunt wire to a certain extent to avoid the steel braided shunt wire being completely locked. The abutting roller movably installed on the support frame in a "U" shape can roll to cooperate with the winding and unwinding and translation process of the steel braided shunt wire, and the steel braided shunt wire will not be overly clamped and rubbed to cause damage, and the clamping and protection effect of the equipment on the scroll spring is more flexible and sufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the lightning current shunt with an anti-reverse protection device of the present utility model;

[0019] Figure 2 It is a schematic top view structure diagram of the lightning current shunt with an anti-reverse protection device of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 It is a schematic cross-sectional structure diagram at A-A in;

[0021] Figure 4 For the present utility model Figure 3 It is a schematic cross-sectional structure diagram at B-B in;

[0022] Figure 5 This is a front view structural schematic diagram of a lightning current diverter with an anti-reverse protection device for the present utility model.

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Spring box;

[0025] 2. Adjusting unit; 201. Outlet box; 202. Bearing box; 203. Servo motor; 204. Bidirectional lead screw; 205. Horizontal strip; 206. Guide rod;

[0026] 3. Limiting unit; 301. Limiting sleeve; 302. Support spring; 303. Support frame; 304. Contact roller;

[0027] 4. Steel braided shunt wire;

[0028] 5. Mounting plate;

[0029] 6. Reinforcing plate. Detailed implementation manners

[0030] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific implementation manners.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] Embodiment 1

[0034] As Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , a lightning current diverter with an anti-reverse protection device includes a spring box 1 and a steel braided shunt wire 4 wound and stored on the spring box 1 through a spring, and further includes: an adjustment unit 2 and a limit unit 3 arranged on the spring box 1;

[0035] The adjustment unit 2 includes an outlet box 201, a bearing box 202, a servo motor 203, a bidirectional lead screw 204 and a transverse strip 205. The outlet box 201 is fixedly arranged on the outer peripheral surface of the bottom end of the spring box 1. The bearing box 202 is fixedly arranged at the bottom end of the outlet box 201, and an outlet through groove with a position size matching the position and the inner diameter size of the end of the outlet box 201 is opened at the center of the bottom surface of the bearing box 202. The steel braided shunt wire 4 is introduced into the interior of the outlet box 201 and extends to the outside of the bearing box 202 through the outlet through groove. The servo motor 203 is fixedly installed on the inner wall of one end of the bearing box 202. The bidirectional lead screw 204 is arranged at the output end of the servo motor 203. There are two transverse strips 205 in total and they respectively cooperate with the positive and negative two sections of the symmetrically arranged threads on the bidirectional lead screw 204;

[0036] The limit unit 3 includes a limit sleeve 301, a support spring 302, a support frame 303 and an abutting roller 304. The limit sleeve 301 is fixedly arranged at the center of the side surface of the transverse strip 205 facing the vertical central axis of the bearing box 202. One end of the support spring 302 is fixedly connected with the transverse strip 205 and is located inside the limit sleeve 301. The support frame 303 is in a "U" shape and is fixedly arranged at the other end of the support spring 302. A rotating rod is installed on the support frame 303. The abutting roller 304 is sleeved on the outer peripheral surface of the rotating rod. There are two groups of the limit unit 3 and they are arranged oppositely on the two transverse strips 205.

[0037] Further, the adjustment unit 2 further includes a guide rod 206. The guide rod 206 is fixedly arranged on the inner wall of the other end of the bearing box 202 and movably penetrates through the two transverse strips 205.

[0038] Further, an "L"-shaped mounting plate 5 is fixedly arranged on the outer peripheral surface of the spring box 1, and mounting holes are opened on the mounting plate 5.

[0039] Further, a reinforcing plate 6 is fixedly arranged at the bottom end of the outlet box 201, and the reinforcing plate 6 is connected with the bearing box 202 by screws.

[0040] The adjustment unit 2 enables the locking operation of the steel braided shunt wire 4 to be stable, so that the scroll spring is effectively protected.

[0041] Embodiment 2

[0042] As Figure 3 andFigure 4 As shown in Figure 4 , a lightning current shunt with an anti-reversal protection device includes a spring box 1 and a steel braided shunt wire 4 wound and stored on the spring box 1 through a spring, and further includes: an adjustment unit 2 and a limit unit 3 arranged on the spring box 1;

[0043] The adjustment unit 2 includes an outlet box 201, a bearing box 202, a servo motor 203, a bidirectional lead screw 204, and a transverse strip 205. The outlet box 201 is fixedly arranged on the outer peripheral surface of the bottom end of the spring box 1. The bearing box 202 is fixedly arranged at the bottom end of the outlet box 201, and an outlet through groove with a position and end inner diameter size matching the position and size of the outlet box 201 is opened at the center of the bottom surface of the bearing box 202. The steel braided shunt wire 4 is introduced into the interior of the outlet box 201 and extends to the outside of the bearing box 202 through the outlet through groove. The servo motor 203 is fixedly installed on the inner wall of one end of the bearing box 202. The bidirectional lead screw 204 is arranged at the output end of the servo motor 203. There are two transverse strips 205 in total, which respectively cooperate with the positive and negative two sections of threads symmetrically arranged on the bidirectional lead screw 204;

[0044] The limit unit 3 includes a limit sleeve 301, a support spring 302, a support frame 303, and an abutting roller 304. The limit sleeve 301 is fixedly arranged at the center of the side surface of the transverse strip 205 facing the vertical central axis of the bearing box 202. One end of the support spring 302 is fixedly connected to the transverse strip 205 and is located inside the limit sleeve 301. The support frame 303 is in a "U" shape and is fixedly arranged at the other end of the support spring 302. A rotating rod is installed on the support frame 303. The abutting roller 304 is sleeved on the outer peripheral surface of the rotating rod. There are two groups of limit units 3, which are arranged oppositely on the two transverse strips 205.

[0045] Further, the support spring 302 is arranged parallel to the bidirectional lead screw 204.

[0046] Further, the abutting roller 304 is arranged perpendicular to the bidirectional lead screw 204.

[0047] Further, an "L"-shaped mounting plate 5 is fixedly arranged on the outer peripheral surface of the spring box 1, and mounting holes are opened on the mounting plate 5.

[0048] Further, a reinforcing plate 6 is fixedly arranged at the bottom end of the outlet box 201, and the reinforcing plate 6 is connected to the bearing box 202 by screws.

[0049] Through the limit unit 3, the clamping and protecting effect of the equipment on the scroll spring is more flexible and sufficient.

[0050] The working principle of the present invention is as follows:

[0051] The steel braided shunt wire 4 wound and stored on the coil spring box 1 is led into the internal part of the wire outlet box 201 and extends to the outside of the bearing box 202 through the wire outlet through groove, and then passes between the two groups of limiting units 3. By operating the servo motor 203, the bidirectional lead screw 204 rotates forward and backward on the wire outlet box 201. The two transverse strip plates 205 threadedly connected to the bidirectional lead screw 204 are forced to move relative to each other in the bearing box 202, driving the two groups of limiting units 3 to adjust the distance. The guide rod 206 is provided to guide the sliding and translation of the transverse strip plate 205 to cooperate with its movement and provide auxiliary support for it. The support spring 302 that supports and fixes the support frame 303 helps the abutting roller 304 on the support frame 303 to flexibly abut against the steel braided shunt wire 4 under the restriction of the limiting sleeve 301. Moreover, when the steel braided shunt wire 4 is pulled and adjusted with the lifting of the storage tank floating roof, the support spring 302 deforms and expands to loosen the steel braided shunt wire 4 to a certain extent to avoid the steel braided shunt wire 4 being completely locked. The abutting roller 304 movably installed on the support frame 303 in a "U" shape rolls to cooperate with the retraction, release and translation process of the steel braided shunt wire 4.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightning current shunt with an anti-reversal protection device, comprising a coil spring box (1) and a steel braided shunt conductor (4) wound around the coil spring box (1) and received therein, characterized in that: It further includes: A transfer unit (2) and a limit unit (3) provided on the coil spring box (1); The transfer unit (2) includes a wire outlet box (201), a bearing box (202), a servo motor (203), a bidirectional lead screw (204), and a transverse strip (205). The wire outlet box (201) is fixedly provided on the outer peripheral surface of the bottom end of the coil spring box (1). The bearing box (202) is fixedly provided at the bottom end of the wire outlet box (201), and a wire outlet through groove with a position dimension matching the position and the inner diameter dimension of the end of the wire outlet box (201) is provided at the center of the bottom surface of the bearing box (202). The steel braided shunt wire (4) is introduced into the wire outlet box (201) and extends to the outside of the bearing box (202) through the wire outlet through groove. The servo motor (203) is fixedly installed on the inner wall of one end of the bearing box (202). The bidirectional lead screw (204) is arranged at the output end of the servo motor (203). There are two transverse strips (205) in total, and they respectively cooperate with the symmetrically arranged positive and negative two sections of threads on the bidirectional lead screw (204); The limit unit (3) includes a limit sleeve (301), a support spring (302), a support frame (303), and an abutting roller (304). The limit sleeve (301) is fixedly provided at the center of the side surface of the transverse strip (205) facing the vertical central axis of the bearing box (202). One end of the support spring (302) is fixedly connected to the transverse strip (205) and is located inside the limit sleeve (301). The support frame (303) is in a "U" shape and is fixedly provided at the other end of the support spring (302). A rotating rod is installed on the support frame (303). The abutting roller (304) is sleeved on the outer peripheral surface of the rotating rod. There are two groups of the limit unit (3), and they are arranged oppositely on the two transverse strips (205).

2. A lightning current shunt with an anti-reverse protection device according to claim 1, characterized in that: The transfer unit (2) further includes a guide rod (206), and the guide rod (206) is fixedly provided on the inner wall of the other end of the bearing box (202) and movably penetrates through the two transverse strips (205).

3. A lightning current shunt with an anti-reverse protection device according to claim 1, characterized in that: The support spring (302) and the bidirectional lead screw (204) are arranged parallel to each other.

4. A lightning current shunt with an anti-reverse protection device according to claim 1, characterized in that: The abutting roller (304) and the bidirectional lead screw (204) are arranged perpendicular to each other.

5. The lightning current shunt with an anti-reverse protection device according to claim 1, characterized in that: An "L"-shaped mounting plate (5) is fixedly provided on the outer peripheral surface of the coil spring box (1), and mounting holes are provided on the mounting plate (5).

6. A lightning current shunt with an anti-reversal protection device according to claim 1, characterized in that: A reinforcing plate (6) is fixedly provided at the bottom end of the wire outlet box (201), and the reinforcing plate (6) is connected to the bearing box (202) by screws.

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