A runway-type voltage-grading ring for transmission lines and its installation method

Abstract

The present invention discloses a runway-type equalizing ring for transmission lines and an installation method thereof, and belongs to the technical field of equalizing rings. The runway-type equalizing ring for transmission lines comprises an equalizing ring body, four support frames, two stabilizing rings and four movable support rods. Two auxiliary plates are arranged in the middle of both sides of the stabilizing ring. A limiting pressure rod is installed between the auxiliary plates. A sliding sleeve is installed in the middle of the limiting pressure rod, and a hydraulic spring is installed inside the sliding sleeve. The present invention solves the problem that the existing equalizing ring has a single structure and poor adaptability in actual use, and the strength cannot meet the work in special environments. The present invention squeezes the auxiliary plates against each other through two groups of crossed limiting pressure rods, and the hydraulic spring inside the sliding sleeve squeezes the limiting pressure rod. One end of the limiting pressure rod maintains a stable position in the auxiliary plate. The structure is simple and easy to use, which is conducive to adapting to different working environments, improves sufficient working strength, has strong adaptability, and is convenient for long-term work.

Description

Technical Field

[0001] The present invention relates to the technical field of voltage-grading rings, and in particular to a runway-type voltage-grading ring for a transmission line and an installation method thereof. Background Art

[0002] The grading ring is a ring-shaped protective hardware used to improve the voltage distribution of the insulator string. Its main function is to prevent side lightning strikes. It is mostly suitable for AC voltage and can evenly distribute high voltage around the object to ensure that there is no potential difference between the various parts of the ring, thereby achieving the effect of equalizing the voltage. During the installation of the grading ring, the selected installation method varies depending on the model of the grading ring and the installation conditions.

[0003] A Chinese patent with announcement number CN202120692U discloses a plug-in equalizing pressure ring, comprising a ring body, the ring body consisting of a semicircular ring I and a semicircular ring II, the end faces of the semicircular rings I and II being fixed with brackets and the two being fixedly connected by the brackets to form a complete ring body, the brackets being of two types, bracket I and bracket II, the bracket I being formed with a protrusion, the bracket II being formed with a groove, the upper end of the bracket being fixedly connected to the lower end of a bracket card, the upper end of the bracket card being formed with a semicircular I, the shape of the card being the same as the shape of the upper end of the bracket card and being formed with a semicircular II corresponding to the semicircular I, the card being fixedly connected to the upper end of the bracket card as a whole. The ring body of this patent is a circular tube, and the protrusions and grooves are plugged in so that no gap is generated when the two semi-rings are installed, resulting in good shielding effect, easy installation and disassembly, light weight, and freely adjustable shielding depth.

[0004] In actual use, the pressure equalizing ring of the above patent has a simple structure, its strength cannot meet the requirements of working in special environments, and its adaptability is poor. Summary of the Invention

[0005] The purpose of the present invention is to provide a runway-type equalizing ring for transmission lines and an installation method thereof, which solves the problem that the equalizing ring proposed in the above background technology has a single structure, cannot meet the strength requirements for working in special environments, and has poor adaptability during actual use.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a runway-type equalizing ring for a transmission line, comprising a equalizing ring body, four support frames, two pressure-stabilizing rings, and four movable support rods, wherein the four support frames are mounted on the lower end of the equalizing ring body, the two pressure-stabilizing rings surround the outside of the four support frames and are welded to the support frames, and the four movable support rods are mounted between the pressure-stabilizing rings and the equalizing ring body;

[0007] Two auxiliary plates are arranged in the middle of both sides of the pressure stabilizing ring, a limiting pressure rod is installed between the two auxiliary plates, a sliding sleeve is installed in the middle of the limiting pressure rod, and a hydraulic spring is installed inside the sliding sleeve.

[0008] Preferably, the four support frames are all welded to the equalizing ring body, a connecting plate is installed at the lower end of the support frame, the connecting plate is welded to the support frame, and an integrally formed fastening hole is provided on the surface of the connecting plate, and the fastening hole is used to fix the bolt.

[0009] Preferably, a damping support rod is installed on one side of the connecting plate, and both ends of the damping support rod are respectively fixedly connected to the connecting plate and the equalizing ring body, and the damping support rod is used to squeeze the position of the connecting plate.

[0010] Preferably, a notch is provided in the middle of the two pressure stabilizing rings, the auxiliary plates are embedded in both sides of the notch and are welded to the two pressure stabilizing rings, and an integrally formed positioning pressure ring is provided on the outside of the pressure stabilizing ring, and the positioning pressure ring is used to fix the transmission line pipeline.

[0011] Preferably, the outer surface of the auxiliary plate is provided with an integrally formed sliding groove, and rotating rollers are installed at both ends of the limiting pressure rod. The rotating rollers are rotatably connected to the limiting pressure rod through bearings, and the rotating rollers are embedded in the sliding groove and slidably connected to the auxiliary plate.

[0012] Preferably, the limiting pressure rod extends to the inside of the sliding sleeve and is slidably connected to the sliding sleeve. An opening is provided in the middle of the limiting pressure rod, and the hydraulic spring is embedded in the opening of the limiting pressure rod and is fixedly connected to the limiting pressure rod.

[0013] Preferably, both ends of the movable support rod are equipped with rotating shafts, and both ends of the movable support rod are movably connected to the auxiliary plate and the equalizing pressure ring body respectively through the rotating shafts.

[0014] A method for installing a runway-type grading ring for a transmission line comprises the following steps:

[0015] Step 1: The staff holds the limit pressure rod in reverse to lift the main body of the pressure stabilizing ring, pulls the pressure stabilizing ring to put the support frame and the movable support rod into the outside of the appliance;

[0016] Step 2: After the pressure equalizing ring body is put on the outside of the electrical appliance, the damping support rod on the outside of the pressure equalizing ring body assists in squeezing the outside of the electrical appliance;

[0017] Step 3: Use two sets of cross-limiting pressure rods to squeeze the auxiliary plates to limit the pressure stabilizing ring, and support the support frame through the pressure stabilizing ring;

[0018] Step 4: The hydraulic spring squeezes the limit rod, and one end of the limit rod remains stable in the auxiliary plate;

[0019] Step 5: The main body of the pressure equalizing ring maintains the tension between the pressure stabilizing ring and the support frame through the movable support rod. By installing positioning bolts on the outside of the electrical appliance, the positioning pressure ring is fixed with the positioning bolts, and the transmission line is fixed with the connecting plate to complete the pressure equalization work.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention puts the equalizing ring body on the outside of the electrical appliance, and then uses the damping support rod outside the equalizing ring body to assist in squeezing the outside of the electrical appliance, and then uses two sets of crossed limiting pressure rods to squeeze the auxiliary plate to limit the pressure stabilizing ring. The hydraulic spring inside the sliding sleeve squeezes the limiting pressure rod through the pressure stabilizing ring support frame, and one end of the limiting pressure rod maintains a stable position in the auxiliary plate. The structure is simple, easy to use, and is conducive to adapting to different working environments. It improves sufficient working strength, has strong adaptability, and is convenient for long-term work.

[0022] 2. During the installation process of the present invention, the main body of the pressure equalizing ring maintains the tension between the pressure stabilizing ring and the support frame through the movable support rod. By installing positioning bolts on the outside of the electrical appliance, the positioning pressure ring is fixed by the positioning bolts to complete the pressure equalization work, which is convenient for operation and installation. In addition, the hydraulic spring is combined with the damping support rod to perform auxiliary shock absorption, which is beneficial for connection and fixing work, long-term use, easy to disassemble and assemble, and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an axonometric view of the present invention from above;

[0024] Figure 2 For the present invention Figure 1 A partial enlarged view of area A in the middle;

[0025] Figure 3 An axonometric view of the present invention viewed from above;

[0026] Figure 4 For the present invention Figure 3 Partial axonometric drawing of area B in the middle;

[0027] Figure 5 An axonometric view of the present invention from the side;

[0028] Figure 6 It is a top view of the main body of the equalizing ring of the present invention;

[0029] Figure 7 This is a diagram of the internal structure of the limiting pressure rod of the present invention.

[0030] In the figure: 1. Equalizing ring body; 2. Support frame; 201. Connecting plate; 202. Fastening hole; 203. Damping support rod; 3. Pressure stabilizing ring; 301. Auxiliary plate; 302. Positioning pressure ring; 303. Limiting pressure rod; 304. Rotating roller; 305. Sliding groove; 306. Sliding sleeve; 307. Hydraulic spring; 4. Movable support rod; 401. Rotating shaft. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] In order to solve the problem that the existing equalizing ring has a single structure, cannot meet the working conditions under special conditions, and has poor adaptability during actual use, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0033] A runway-type equalizing ring for a transmission line, comprising an equalizing ring body 1, four support frames 2, two pressure-stabilizing rings 3, and four movable support rods 4. The four support frames 2 are all mounted on the lower end of the equalizing ring body 1. The two pressure-stabilizing rings 3 surround the outside of the four support frames 2 and are welded to the support frames 2. The four movable support rods 4 are mounted between the pressure-stabilizing rings 3 and the equalizing ring body 1.

[0034] Two auxiliary plates 301 are set in the middle of both sides of the pressure stabilizing ring 3, and a limiting pressure rod 303 is installed between the two auxiliary plates 301. A sliding sleeve 306 is installed in the middle of the limiting pressure rod 303, and a hydraulic spring 307 is installed inside the sliding sleeve 306. After the equalizing ring body 1 is put on the outside of the electrical appliance, the damping support rod 203 outside the equalizing ring body 1 assists in squeezing the outside of the electrical appliance, and then two groups of crossed limiting pressure rods 303 squeeze the auxiliary plates 301 against each other to limit the pressure stabilizing ring 3.

[0035] The outer surface of the auxiliary plate 301 is provided with an integrally formed sliding groove 305, and rotating rollers 304 are installed at both ends of the limiting pressure rod 303. The rotating rollers 304 are rotatably connected to the limiting pressure rod 303 through bearings, and the rotating rollers 304 are embedded in the sliding groove 305 and are slidably connected to the auxiliary plate 301. The limiting pressure rod 303 extends to the inside of the sliding sleeve 306 and is slidably connected to the sliding sleeve 306. An opening is provided in the middle of the limiting pressure rod 303, and a hydraulic spring 307 is embedded in the opening of the limiting pressure rod 303 and is connected to the limiting pressure rod 303. The positioning pressure rod 303 is fixedly connected, and both ends of the movable support rod 4 are equipped with a rotating shaft 401, and both ends of the movable support rod 4 are movably connected to the auxiliary plate 301 and the equalizing ring body 1 through the rotating shaft 401. The hydraulic spring 307 inside the sliding sleeve 306 squeezes the positioning pressure rod 303, and one end of the positioning pressure rod 303 maintains a stable position in the auxiliary plate 301. It has a simple structure and is easy to use. It is conducive to adapting to different working environments, improves sufficient working intensity, has strong adaptability, and is convenient for long-term work.

[0036] Specifically, after the pressure-equalizing ring body 1 is put on the outside of the electrical appliance, the damping support rod 203 on the outside of the pressure-equalizing ring body 1 assists in squeezing the outside of the electrical appliance, and then two sets of crossed limiting pressure rods 303 squeeze the auxiliary plate 301 to limit the pressure stabilizing ring 3. The pressure stabilizing ring 3 supports the support frame 2, and the hydraulic spring 307 inside the sliding sleeve 306 squeezes the limiting pressure rod 303. One end of the limiting pressure rod 303 maintains a stable position in the auxiliary plate 301. It has a simple structure and is easy to use. It is conducive to adapting to different working environments, improves sufficient working intensity, has strong adaptability, and is convenient for long-term work.

[0037] In order to solve the problem that the existing equalizing ring has a single structure, cannot meet the working conditions under special conditions, and has poor adaptability during actual use, please refer to Figure 1 , Figure 5 - Figure 7 , this embodiment provides the following technical solutions:

[0038] There is a gap in the middle of the two pressure stabilizing rings 3, and the auxiliary plates 301 are embedded on both sides of the gap and welded to the two pressure stabilizing rings 3. An integrally formed positioning pressure ring 302 is provided on the outside of the pressure stabilizing ring 3, and the positioning pressure ring 302 is used to fix the transmission line pipeline.

[0039] The four support frames 2 are all welded to the equalizing pressure ring body 1. A connecting plate 201 is installed at the lower end of the support frame 2. The connecting plate 201 is welded to the support frame 2. The surface of the connecting plate 201 is provided with an integrally formed fastening hole 202. The fastening hole 202 is used to fix the bolts. During the installation process, the equalizing pressure ring body 1 maintains the tension between the pressure stabilizing ring 3 and the support frame 2 through the movable support rod 4. By installing the positioning bolts on the outside of the electrical appliance, the positioning pressure ring 302 is fixed by the positioning bolts to complete the pressure equalization work.

[0040] A damping support rod 203 is installed on one side of the connecting plate 201. The two ends of the damping support rod 203 are respectively fixedly connected to the connecting plate 201 and the equalizing ring body 1. The damping support rod 203 is used to squeeze the position of the connecting plate 201. The hydraulic spring 307 cooperates with the damping support rod 203 to perform auxiliary shock absorption, which is beneficial for connection and fixing work, long-term use, easy disassembly and assembly, and good adaptability.

[0041] Specifically, during the installation process, the pressure equalizing ring body 1 maintains the tension between the pressure stabilizing ring 3 and the support frame 2 through the movable support rod 4. By installing positioning bolts on the outside of the electrical appliance, the positioning pressure ring 302 is fixed by the positioning bolts to complete the pressure equalization work, which is convenient for operation and installation. In addition, the hydraulic spring 307 is combined with the damping support rod 203 to perform auxiliary shock absorption, which is beneficial for connection and fixing work, long-term use, easy to disassemble and assemble, and has good adaptability.

[0042] A method for installing a runway-type grading ring for a transmission line comprises the following steps:

[0043] Step 1: The staff holds the limit pressure rod 303 to lift the pressure equalizing ring body 1 in the opposite direction, pulls the pressure stabilizing ring 3 to insert the support frame 2 and the movable support rod 4 into the outside of the electrical appliance, and provides support to the pressure stabilizing ring 3 through the support frame 2 and the movable support rod 4, maintaining the runway-shaped structure of the pressure stabilizing ring 3, which is conducive to long-term use;

[0044] Step 2: After the pressure-equalizing ring body 1 is put on the outside of the electrical appliance, the damping support rod 203 on the outside of the pressure-equalizing ring body 1 assists in squeezing the outside of the electrical appliance, and the hydraulic spring 307 cooperates with the damping support rod 203 to assist in shock absorption, which is conducive to connection and fixing work, is conducive to long-term use, is easy to disassemble and assemble, and has good adaptability;

[0045] Step 3: Use two sets of cross-limiting pressure rods 303 to press the auxiliary plate 301 against each other to limit the pressure stabilizing ring 3 and support the support frame 2 through the pressure stabilizing ring 3;

[0046] Step 4: The hydraulic spring 307 squeezes the limiting pressure rod 303, and one end of the limiting pressure rod 303 remains stable in the auxiliary plate 301;

[0047] Step 5: The main body 1 of the equalizing ring maintains the tension between the stabilizing ring 3 and the support frame 2 through the movable support rod 4. By installing positioning bolts on the outside of the electrical appliance, the positioning pressure ring 302 is fixed by the positioning bolts, and the transmission line is fixed by the connecting plate 201 to complete the equalizing work, which is conducive to connection and fixing work, long-term use, easy disassembly and assembly, and good adaptability.

[0048] Working principle: The staff holds the limit pressure rod 303 to lift the equalizing ring body 1 in the opposite direction, pulls the pressure stabilizing ring 3 to put the support frame 2 and the movable support rod 4 into the outside of the appliance, and provides support to the stabilizing ring 3 through the support frame 2 and the movable support rod 4, so as to maintain the runway-type structure of the pressure stabilizing ring 3, which is conducive to long-term use. After the equalizing ring body 1 is put on the outside of the appliance, the damping support rod 203 outside the equalizing ring body 1 assists in squeezing the outside of the appliance, and the hydraulic spring 307 cooperates with the damping support rod 203 to assist. To assist in shock absorption, two sets of crossed limiting pressure rods 303 are used to squeeze the auxiliary plate 301 to limit the pressure stabilizing ring 3, and the support frame 2 is supported by the pressure stabilizing ring 3. The hydraulic spring 307 squeezes the limiting pressure rod 303, and one end of the limiting pressure rod 303 maintains a stable position in the auxiliary plate 301. The equalizing ring body 1 maintains the tension between the pressure stabilizing ring 3 and the support frame 2 through the movable support rod 4. The positioning bolts are installed on the outside of the electrical appliance and the positioning pressure ring 302 is fixed by the positioning bolts to complete the pressure equalization work.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A runway-type equalizing ring for a transmission line, comprising a equalizing ring body (1), four support frames (2), two stabilizing rings (3) and four movable support rods (4), characterized in that: The four support frames (2) are all installed at the lower end of the equalizing ring body (1), the two pressure stabilizing rings (3) surround the outside of the four support frames (2) and are welded to the support frames (2), and the four movable support rods (4) are installed between the pressure stabilizing rings (3) and the equalizing ring body (1); Two auxiliary plates (301) are provided in the middle of both sides of the pressure stabilizing ring (3), a limiting pressure rod (303) is installed between the two auxiliary plates (301), a sliding sleeve (306) is installed in the middle of the limiting pressure rod (303), and a hydraulic spring (307) is installed inside the sliding sleeve (306); A notch is provided in the middle of the two pressure stabilizing rings (3), and the auxiliary plate (301) is embedded on both sides of the notch and welded to the two pressure stabilizing rings (3). An integrally formed positioning pressure ring (302) is provided on the outside of the pressure stabilizing ring (3), and the positioning pressure ring (302) is used to fix the transmission line pipeline.

2. The racetrack-shaped grading ring for a power transmission line according to claim 1, characterized in that: The four support frames (2) are all welded to the equalizing ring body (1); a connecting plate (201) is installed at the lower end of the support frame (2); the connecting plate (201) is welded to the support frame (2); and an integrally formed fastening hole (202) is provided on the surface of the connecting plate (201); the fastening hole (202) is used for fixing bolts.

3. The racetrack-shaped grading ring for a power transmission line according to claim 2, characterized in that: A damping support rod (203) is installed on one side of the connecting plate (201), and two ends of the damping support rod (203) are respectively fixedly connected to the connecting plate (201) and the equalizing ring body (1), and the damping support rod (203) is used to squeeze the position of the connecting plate (201).

4. The racetrack-shaped grading ring for a power transmission line according to claim 3, characterized in that: An integrally formed sliding groove (305) is provided on the outer surface of the auxiliary plate (301), and rotating rollers (304) are installed at both ends of the limiting pressure rod (303). The rotating rollers (304) are rotatably connected to the limiting pressure rod (303) via bearings, and the rotating rollers (304) are embedded in the sliding groove (305) and slidably connected to the auxiliary plate (301).

5. The racetrack-shaped grading ring for a power transmission line according to claim 4, characterized in that: The limiting pressure rod (303) extends into the interior of the sliding sleeve (306) and is slidably connected to the sliding sleeve (306). An opening is provided in the middle of the limiting pressure rod (303). The hydraulic spring (307) is embedded in the opening of the limiting pressure rod (303) and is fixedly connected to the limiting pressure rod (303).

6. The racetrack-shaped grading ring for a power transmission line according to claim 5, characterized in that: Both ends of the movable support rod (4) are equipped with rotating shafts (401), and both ends of the movable support rod (4) are movably connected to the auxiliary plate (301) and the equalizing ring body (1) respectively through the rotating shafts (401).

7. A method for installing a racetrack-type grading ring for a power transmission line according to claim 6, characterized in that: The steps include: Step 1: The staff member holds the limiting pressure rod (303) to lift the equalizing ring body (1) in the opposite direction, pulls the stabilizing ring (3) to insert the support frame (2) and the movable support rod (4) into the exterior of the electrical appliance; Step 2: After the pressure equalizing ring body (1) is placed on the outside of the electrical appliance, the damping support rod (203) on the outside of the pressure equalizing ring body (1) is used to assist in squeezing the outside of the electrical appliance; Step 3: The auxiliary plate (301) is pressed against each other by two sets of intersecting limiting pressure rods (303) to limit the stabilizing ring (3), and the supporting frame (2) is supported by the stabilizing ring (3); Step 4: The hydraulic spring (307) squeezes the limiting pressure rod (303), and one end of the limiting pressure rod (303) remains stable in the auxiliary plate (301); Step 5: The main body of the pressure equalizing ring (1) maintains the tension between the pressure stabilizing ring (3) and the support frame (2) through the movable support rod (4), and the positioning pressure ring (302) is fixed by the positioning bolts installed on the outside of the electrical appliance, and the transmission line is fixed by the connecting plate (201) to complete the pressure equalization work.

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