CN104444766B - Electric power transformer insulated sleeve hoisting device - Google Patents

Abstract

The invention discloses a hoisting device for an insulating bushing of a power transformer, which includes a hook, a base plate, a rope, and two rope adjustment handles, the hook is fixed on the center of the base plate, and the rope adjustment handle includes a handle head and a handle column. The handle head is fixedly connected with the handle column, two through holes are symmetrically arranged at both ends of the base plate, the handle column of the rope adjustment handle is placed in the through hole, the handle head is located on the side where the hook is located on the base plate, the The outer circle of the handle head is larger than the aperture of the through hole, and the handle post of the rope adjustment handle has a spiral rope winding groove, and the rope is wound on the handle post. The invention has the beneficial effects of satisfying obliquely inserting and hoisting operations of large bushings, facilitating hooking and dismounting, and the angle during hoisting can be adjusted at any time to avoid damage to the bushing.

Description

Power Transformer Insulation Bushing Hoisting Device

technical field

The invention relates to an insulating bushing hoisting device for a power transformer, which belongs to the technical field of power equipment.

Background technique

The transformer bushing is the main insulation device that leads the high and low voltage leads inside the transformer to the outside of the transformer oil tank. The lead-out wires of the transformer winding must pass through the insulating sleeve to insulate between the lead-out wires and between the lead-out wires and the transformer shell, and at the same time play the role of fixing the lead-out wires. The transformer bushing is also one of the current-carrying components of the transformer. During the operation of the transformer, the load current passes through it for a long time. With the development of my country's electric power industry, the power supply is increasing year by year, and power transformers are gradually developing towards high voltage and large capacity. Therefore, the technical requirements for the high-voltage bushing are getting higher and higher, and the insulation distance of each part of the high-voltage bushing is gradually reduced. At present, the high-voltage bushings of large-scale power transformers are mostly porcelain bushings, which are heavy and bulky. When installing the high-voltage bushing, it is very difficult to use the traditional oblique insertion method for hoisting, and it is easy to cause damage to the porcelain bushing during the hoisting process.

The shortcomings of traditional hoisting specifically include the following four aspects:

1. The traditional oblique hoisting method is quite technically difficult. Even for a master with many years of experience, it takes many times of debugging to meet the requirements. When the casing length is too long, the hoisting and debugging are more difficult, time-consuming and labor-intensive.

2. There are various on-site equipment, and the requirements for the insulation distance of the high-voltage bushing are also various, which causes the angles between the high-voltage bushing and the transformer body to be different. Every angle needs to be constantly adjusted on site to meet the ever-changing construction requirements, resulting in a lot of time wasted.

3. Safety issues: During the repeated debugging process, the bushing rises and falls, which is very easy to cause damage to the bushing.

4. During the hoisting process, it is also necessary to pad soft cardboard or cotton cloth on the part where the nylon sling is in contact with the casing porcelain part, so as to prevent the nylon sling from damaging the casing porcelain part after being stressed.

Contents of the invention

The purpose of the present invention is to provide a hoisting device for insulating bushings of power transformers, which can meet the requirements of the installation operation process of high-voltage bushings of large-scale power transformers and incoming line bushings of indoor GIS, and replace the hoisting method of small chain hoists for angle adjustment. Overcome the shortcomings of traditional hoisting devices.

The purpose of the present invention is achieved through the following technical solutions:

A power transformer insulating bushing hoisting device, comprising a hook 1, a bottom plate 2, a rope 3, and two rope adjustment handles 4, the hook 1 is fixed on the center of the bottom plate 2, and the two rope adjustment handles 4 have the same structure , the rope adjustment handle 4 includes a handle head 5 and a handle column 6, the handle head 5 is fixedly connected with the handle column 6, two through holes are symmetrically arranged at both ends of the bottom plate 2, the handle of the rope adjustment handle 4 The column 6 is placed in the through hole, the handle 5 is located on the side of the hook 1 on the bottom plate 2, the outer circle of the handle 5 is larger than the aperture of the through hole, and the handle post 6 of the rope adjustment handle 4 has a The helical rope winding groove 7, the rope 3 is wound on the handle post 6.

The object of the present invention can also be further realized by the following technical measures:

The aforementioned lifting device for insulating bushings of power transformers, wherein the rope adjustment handle 4 also includes a convex post 8, the convex post 8 is located between the handle head 5 and the handle post 6, and the convex post 8 is located At the corresponding position, there is a concave circular groove 9 inside the through hole of the bottom plate 2, and the convex column 8 can be fitted to rotate in the concave circular groove 9.

The above-mentioned hoisting device for insulating bushings of power transformers, wherein a rotary handle 11 is arranged on the top of the crown 5 .

The above-mentioned hoisting device for insulating bushings of power transformers, wherein the bottom plate 2 is made of epoxy resin plate.

The above-mentioned hoisting device for the insulating bushing of a power transformer, wherein the rope 3 is a nylon rope.

Compared with the prior art, the beneficial effect of the present invention is that it meets the oblique insertion and hoisting operation of large casings, facilitates hooking and disassembly, and the angle during hoisting can be adjusted at any time to avoid damage to the casings.

Description of drawings

Fig. 1 is a structural diagram of the present invention;

Fig. 2 is the embodiment diagram of the rope adjustment handle of the present invention;

Fig. 3 is a diagram of an embodiment of the rope adjustment handle with a rotary handle of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

When using the traditional method to lift the insulating sleeve, if the porcelain bushing is relatively light, the construction personnel will bind the position of the sling on the porcelain skirt based on experience to determine the lifting angle. Once the angle is determined, it cannot be adjusted unless it is re-bound. Generally, it is pushed by manpower , the angle can be fine-tuned, such as 110 casing and below, this method is often used, and it is relatively easy, which can save installation time. The 220 casing is relatively heavy and cannot be pushed by manpower, so this method cannot be used. Therefore need to adopt the power transformer insulating bushing hoisting device of the present invention.

As shown in Figure 1, the power transformer insulating bushing hoisting device of the present invention includes a hook 1, a bottom plate 2, a rope 3, and two rope adjustment handles 4, the hook 1 is fixed on the center of the bottom plate 2, and the two The rope adjustment handle 4 has the same structure. The simple rope adjustment handle 4 has a structure as shown in Figure 2, including a handle head 5 and a handle column 6, the handle head 5 is fixedly connected to the handle column 6, and two through holes are symmetrically arranged at both ends of the bottom plate 2, so that The handle column 6 of the rope adjustment handle 4 is placed in the through hole, the handle head 5 is located on the side where the hook 1 is located on the bottom plate 2, the outer circle of the handle head 5 is larger than the aperture of the through hole, and the handle head 5 is larger than the aperture of the through hole. The handle 6 of 4 has a helical rope winding groove 7, and the rope 3 is wound on the handle 6. The simple rope adjustment handle 4 is simple in structure and easy to install, but there is a possibility of falling off from the side of the bottom plate. For greater safety, the rope adjustment handle 4 shown in Figure 1 can be used, wherein the rope adjustment handle 4 also includes a convex column 8 , the convex column 8 is located between the handle head 5 and the handle column 6, and at the corresponding position where the convex column 8 is located, there is a concave circular groove 9 inside the through hole of the bottom plate 2, and the convex column 8 can be matched to rotate in the concave circular groove 9. In this way, the rope adjustment handle 4 will not fall off from the bottom plate.

When using the insulating bushing hoisting device of the present invention, check whether there is any problem with the bushing to be installed before construction, then hang the hook 1 on the crane, the rope 3 is drawn from the handle post 6, and the two ropes are fixed on the bushing 10 At the corresponding positions at both ends, start the crane, slowly drop the casing, and find the center of gravity of the entire casing. At the position close to the raised seat, the construction personnel rotate the handle head 5 to drive the handle column 6 to rotate together. Different The direction of rotation is to loosen or shorten the rope respectively. By adjusting the length and breakage of the two ropes, the angle is found, and then the casing is slowly sent into the rising seat, connected with it, and fixed. In order to facilitate the construction operation, as shown in Figure 3, a rotating handle 11 is arranged on the top of the crown 5, which is convenient to rotate flexibly.

The bottom plate 2 of the power transformer insulating bushing hoisting device is made of an epoxy resin plate, which insulates the hook 1 from other parts, and can prevent accidental electric shock accidents.

In addition to the above-mentioned embodiments, the present invention can also have other implementations, and all technical solutions formed by equivalent replacement or transformation fall within the scope of protection required by the present invention.

Claims (1)

1. A power transformer insulating bushing hoisting device, characterized in that it includes a hook (1), a bottom plate (2), a rope (3), and two rope adjustment handles (4), and the hook (1) is fixed on the bottom plate (2), the two rope adjustment handles (4) have the same structure, and the rope adjustment handle (4) includes a handle head (5), a handle column (6), and the handle head (5) There is a rotary handle (11) on the upper part, the handle head (5) is fixedly connected with the handle column (6), two through holes are symmetrically arranged at both ends of the bottom plate (2), and the rope adjustment handle (4) The handle column (6) is placed in the through hole, the handle head (5) is located on the side of the hook (1) on the bottom plate (2), and the outer circle of the handle head (5) is larger than the aperture of the through hole, so The handle column (6) of the rope adjustment handle (4) has a spiral rope winding groove (7), and the rope (3) is wound on the handle column (6); the rope adjustment handle (4) also includes a A convex column (8), the convex column (8) is located between the crown (5) and the handle column (6), at the corresponding position where the convex column (8) is located, the bottom plate (2) There is a concave circular groove (9) inside the through hole, and the convex column (8) can be rotated in the concave circular groove (9); the bottom plate (2) is made of epoxy resin plate, and the rope (3) is a nylon rope.