Installation tool for 35kV and above oil-immersed transformer

Abstract

The utility model belongs to the technical field of transformer installation, and particularly relates to an installation tool for an oil-immersed transformer of 35 kV and above. The horizontal steel plate is welded to the steel rail, the fixed hanging point steel plate is vertically welded to the tail end of the horizontal steel plate and the tail end of the steel rail, the fixed hanging point U-shaped ring is installed on the fixed hanging point steel plate, and the steel rail is connected with the transformer built-in foundation steel rail through bolts and the connecting clamping plate. And steel wire ropes at two ends of the chain block are respectively connected with the fixed hanging point U-shaped ring and a movable gravity center hanging point at the bottom of the transformer. For a transformer room without a fixed hanging point and a crane, a fixed hanging point installation tool is manufactured through a transformer foundation steel rail, and a chain block is connected to the fixed hanging point and a movable gravity center position hanging point at the bottom of the transformer to drag the transformer needing to be in place, so that the transformer is in place and fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer installation, and in particular relates to an installation tool for 35kV and above oil-immersed transformers. Background Art

[0002] Traditional indoor oil-immersed transformers are placed in place by using pre-buried fixed hanging points in the transformer room. A hand winch is used to connect the fixed hanging points in the transformer room with the mobile center of gravity hanging points at the bottom of the transformer to drag the transformer to be placed, or an industrial plant crane is used to lift the transformer to the transformer foundation.

[0003] For transformer rooms without fixed hanging points and cranes, fixed hanging points are usually re-made inside and outside the transformer room. When the civil construction of the transformer room is completed, the space for re-making fixed hanging points is often limited, which cannot meet the requirements of towing large-tonnage transformers when they are in place, and it is even more difficult to install cranes. Therefore, using the transformer foundation rails to make fixed hanging points has become a feasible design idea. Summary of the invention

[0004] The purpose of the utility model is to provide a 35kV and above oil-immersed transformer installation tooling. For a transformer room without a fixed hanging point and a traveling crane, a fixed hanging point installation tooling is made by using the transformer foundation rails, and a hand winch is connected to the fixed hanging point and the mobile center of gravity hanging point at the bottom of the transformer to drag the transformer to be put in place, so that the transformer is in place and fixed.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] A 35kV and above oil-immersed transformer installation tool, horizontal steel plates are welded to rails, fixed hanging point steel plates are vertically welded to the horizontal steel plates and the ends of the rails, fixed hanging point U-shaped rings are installed on the fixed hanging point steel plates, the rails are connected to the transformer's own basic rails using bolts and connecting clamps, and the steel wire ropes at both ends of the hand winch are respectively connected to the fixed hanging point U-shaped ring and the mobile center of gravity hanging point at the bottom of the transformer.

[0007] The horizontal steel plate is 15mm thick.

[0008] The rail length is 1500mm.

[0009] The thickness of the steel plate for the fixed hanging point is 10mm.

[0010] A fixing clip is arranged between the fixed hanging point steel plate and the rail.

[0011] The bolt is M22×100.

[0012] The hand chain hoist is 6t.

[0013] The beneficial effects achieved by the utility model are:

[0014] By designing and manufacturing fixed hanging point installation tools, the feasibility and accuracy of indoor transformer installation is achieved, avoiding the difficulty of re-making the transformer indoors due to the lack of fixed hanging points when it is installed. By designing a dragging scheme, the fixed hanging point installation tools can be connected at the beginning and end of the transformer, realizing the installation of the indoor transformer and the removal and dragging of the transformer outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Installation drawing for fixing hanging points;

[0016] Figure 2 This is the tooling diagram for connecting the splints;

[0017] Figure 3 This is the connection dimension drawing of the transformer foundation rail at the beginning;

[0018] Figure 4 It is the transformer drag schematic diagram;

[0019] In the figure, 1 is a fixed hanging point U-shaped ring; 2 is a steel rail; 3 is a hand winch; 4 is a connecting clamp; 5 is a transformer; 6 is a mobile center of gravity hanging point at the bottom of the transformer; 7 is a fixed hanging point steel plate; and 8 is a fixing clamp. DETAILED DESCRIPTION

[0020] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] A 15mm thick steel plate is horizontally welded to a 1500mm thick rail 2, a 10mm thick fixed hanging point steel plate 7 is vertically welded to a 15mm thick steel plate and the end of the rail 2, a hole is opened on the fixed hanging point steel plate 7 to install a fixed hanging point U-shaped ring 1, a fixed clamp 8 is provided between the fixed hanging point steel plate 7 and the rail 2, and the rail 2 is connected to the transformer foundation rail using M22×100 bolts and a connecting clamp 4. The steel wire ropes at both ends of the 6t hand chain hoist 3 are respectively connected to the fixed hanging point U-shaped ring 1 and the mobile center of gravity hanging point 6 at the bottom of the transformer.

[0022] This installation tool involves indoor oil-immersed transformers of 35kV and above, with a capacity of more than 12500kVA. When the transformer room is in place, there is no design or pre-buried fixed hanging point or indoor crane for the mobile transformer, and the technical field of design of the installation tool is required.

[0023] Design and manufacture fixed hanging point installation tooling, the design principle is that the hanging point height is the same as the hanging point height of the moving center of gravity at the bottom of the transformer. Use rails of the same size and model as the transformer foundation rails, weld 15mm thick steel plates horizontally on 1500mm movable rails, and vertically weld 10mm thick steel plates to 15mm thick steel plates and the ends of movable rails. Open Φ33 holes in the 10mm thick steel plate, with the hole center 210mm away from the rail surface. Open 3×Φ25 holes at the beginning of the movable rail (connection end with the transformer), with hole center distances of 140mm and 150mm. Use standard track clamps that match the transformer rails as track connection installation tooling.

[0024] exist Figure 4 At the position shown, use M22×100 bolts and connecting clamps to connect the rails of the fixed hanging point to the transformer foundation rails. Install the 10t shackle Figure 4 1 shown; the wire rope and the two ends of the 6t hand chain hoist are connected to the 10t shackle and the hanging point 6 at the bottom of the transformer. After completing the above steps, pull the hand chain hoists on both sides synchronously to make the bottom wheels of the transformer move synchronously. If the bottom wheels do not move synchronously and the transformer deviates from the track, the wire rope can be adjusted.

[0025] The key points and protection points of this design are: the design and research of the fixed hanging point installation tooling. The synchronization of the wheels of the transformer base on different tracks when dragged by manpower. By making the fixed hanging point installation tooling, the installation efficiency is improved and the cost of civil engineering reinstallation is saved.

Claims

1. A 35kV and above oil-immersed transformer installation tool, characterized by: The horizontal steel plate is welded to the rail, the fixed hanging point steel plate is vertically welded to the horizontal steel plate and the end of the rail, the fixed hanging point U-shaped ring is installed on the fixed hanging point steel plate, the rail is connected to the basic rail of the transformer with bolts and connecting clamps, and the steel wire ropes at both ends of the hand winch are respectively connected to the fixed hanging point U-shaped ring and the mobile center of gravity hanging point at the bottom of the transformer.

2. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: The horizontal steel plate is 15mm thick.

3. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: The rail length is 1500mm.

4. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: The thickness of the steel plate for the fixed hanging point is 10mm.

5. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: A fixing clip is arranged between the fixed hanging point steel plate and the rail.

6. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: The bolt is M22×100.

7. The 35kV and above oil-immersed transformer installation tool according to claim 1 is characterized in that: The hand chain hoist is 6t.

Images