Oil-immersed transformer convenient to overhaul

Abstract

The utility model relates to a transformer, in particular to an oil-immersed transformer convenient to overhaul. The oil-immersed transformer convenient to overhaul comprises a shell, a binding post, a radiator, an outer cover, a window, a hinge, a coil, a fixing frame and the like. Binding posts are arranged on the front side and the rear side of the shell, a radiator is arranged on the left side of the shell, an outer cover is arranged on the top of the shell, hinges are connected between the top of the rear side of the shell and the bottom of the rear side of the outer cover, and the shell and the outer cover are hinged through the hinges. According to the utility model, through the design of the U-shaped pull rod, the bolt, the clamping block and the spring, the fixation of the coil can be quickly released by simply pulling out the bolt and pulling the U-shaped pull rod, and the operation is simple, convenient and quick; and when the coil is fixed again, only the bolt needs to be pulled out, and the clamping block automatically resets under the action of the spring to fix the coil, so that the mounting and dismounting processes of the coil are simplified, the maintenance efficiency is improved, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transformer especially to an oil immersed transformer convenient to overhaul. BACKGROUND

[0002] The oil immersed transformer is the electrical equipment commonly used in the power system, and is mainly used for voltage transformation and electric energy transmission.

[0003] The coil fixing frame in the traditional oil immersed transformer is composed of multiple components such as bolts, nuts and gaskets, which are prone to rust or jam after long time operation, and the disassembly and installation need to consume a lot of time and manpower, and the inside space of the transformer is narrow, so that the operator is difficult to operate the tool, which increases the difficulty of disassembly and affects the overhaul efficiency. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects that the coil fixing frame in the traditional oil immersed transformer is composed of multiple components, which are prone to rust or jam after long time operation, and the installation and disassembly need to consume a lot of time and manpower, and affect the overhaul efficiency, the utility model provides an oil immersed transformer convenient to overhaul.

[0005] The technical scheme is: an oil immersed transformer convenient to overhaul, comprising a shell, a terminal post, a radiator, a cover, a window, a hinge, a coil, a fixing frame, an oil discharge valve and a fixing mechanism, the front and rear sides of the shell are provided with the terminal post, the left side of the shell is provided with the radiator, the top of the shell is provided with the cover, the hinge is connected between the top of the rear side of the shell and the bottom of the rear side of the cover, the shell and the cover are hingedly connected through the hinge, the top of the cover is provided with the window, the bottom of the rear side of the shell is provided with the oil discharge valve, the shell is provided with the fixing frame and the coil, and the coil is located in the fixing frame, and the top of the fixing frame is provided with a plurality of fixing mechanisms.

[0006] Further, the fixing mechanism comprises a U-shaped pull rod, a bolt, a spring, a clamping block, a connecting shaft, a fixing block and a mounting frame, the top of the fixing frame is provided with a plurality of mounting frames, each mounting frame is provided with a rectangular hole on the side facing the coil, the clamping block is slidingly arranged in the mounting frame through the rectangular hole, the spring is connected between the mounting frame and the clamping block, the clamping block is provided with a sliding groove, the top of the fixing frame is provided with the fixing block, the top of the mounting frame is provided with the U-shaped pull rod, the U-shaped pull rod slidingly penetrates the fixing block, the bottom of the U-shaped pull rod is provided with the connecting shaft, the connecting shaft is located in the sliding groove on the clamping block, the right side of the fixing frame is provided with a circular hole, the right side of the U-shaped pull rod is provided with the bolt, and the bolt penetrates the U-shaped pull rod and is located in the circular hole.

[0007] Further, the window is made of translucent material.

[0008] Further, it also includes connecting block, connecting rod and electric push rod, the rear side of the outer cover is equipped with the connecting block, the rear side of the shell is equipped with the electric push rod, the connecting rod is rotatably arranged in the connecting block, and one end of the connecting rod away from the connecting block is connected to the telescopic rod of the electric push rod.

[0009] Further, it also includes standby oil tank, valve, oil pipe and measuring cylinder, the right side of the shell is connected with the oil pipe, one end of the oil pipe away from the shell is connected with the valve, the top of the valve is connected with the standby oil tank, the right side of the shell is equipped with the measuring cylinder, the measuring cylinder is connected to the right side bottom of the shell and penetrates the shell.

[0010] Further, it also includes air pressure gauge and thermometer, the right side of the shell is equipped with the air pressure gauge and the thermometer, and the contacts of the air pressure gauge and the thermometer are located on the inner side of the shell.

[0011] The utility model discloses the beneficial effects of the following: 1, the utility model discloses a U type pull rod, bolt, clamping block and spring's design, through simple pull bolt and pull U type pull rod, can quickly remove the fixation of coil, and the operation is simple and quick, when fixing the coil again, only need to pull out the bolt, and clamping block is under the action of spring and resets automatically to fix the coil, simplify the installation and disassembly process of coil, improve the efficiency of overhaul, and reduce the labor cost.

[0012] 2, the utility model discloses the design of standby oil tank, valve, oil pipe and measuring cylinder, and the measuring cylinder communicates with the inside of transformer, can detect the insulating oil volume of the inside of transformer in real time, and through the opening and closing of valve control oil pipe, can quickly and conveniently supplement the insulating oil of the inside of transformer from the standby oil tank. DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is the three-dimensional structure schematic diagram of the back of the utility model.

[0015] Figure 3 It is the three-dimensional structure schematic diagram of the electric push rod, window and outer cover of the utility model.

[0016] Figure 4 It is the three-dimensional structure schematic diagram of the coil, fixed frame and U type pull rod of the utility model.

[0017] Figure 5 It is the three-dimensional structure schematic diagram of the bolt, spring and clamping block of the utility model.

[0018] Reference numerals: 1_Outer casing, 2_Terminal, 3_Radiator, 4_Outer cover, 5_Window, 6_Measuring cylinder, 7_Barometer, 8_Thermometer, 9_Spare oil tank, 10_Valve, 11_Oil pipe, 12_Hinge, 13_Connecting block, 14_Connecting rod, 15_Electric push rod, 16_Coil, 17_Fixing bracket, 18_U-shaped pull rod, 19_Pin, 20_Spring, 21_Clamping block, 22_Connecting shaft, 23_Slide groove, 24_Mounting frame, 25_Fixing block, 26_Oil drain valve. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] An oil-immersed transformer that is easy to maintain, such as Figures 1-5 As shown, the transformer includes a housing 1, terminals 2, a radiator 3, an outer cover 4, a viewing window 5, a hinge 12, a coil 16, a mounting bracket 17, an oil drain valve 26, and a fixing mechanism. Terminals 2 are provided on both the front and rear sides of the housing 1. A radiator 3 is provided on the left side of the housing 1. Activating the radiator 3 can reduce the heat generated by the transformer due to long-term operation. An outer cover 4 is provided on the top of the housing 1. A hinge 12 connects the top rear side of the housing 1 and the bottom rear side of the outer cover 4. The housing 1 and the outer cover 4 are hinged together by the hinge 12. A viewing window 5 is provided on the top of the outer cover 4. The viewing window 5 is made of semi-transparent material, which allows maintenance personnel to see through the coil 16 inside the transformer. An oil drain valve 26 is provided on the bottom rear side of the housing 1. Before maintenance, the remaining insulating oil inside the transformer needs to be drained through the oil drain valve 26. The mounting bracket 17 and the coil 16 are provided inside the housing 1, and the coil 16 is located inside the mounting bracket 17. Several fixing mechanisms are provided on the top of the mounting bracket 17.

[0021] like Figure 4 and Figure 5 As shown, the fixing mechanism includes a U-shaped pull rod 18, a pin 19, a spring 20, a locking block 21, a connecting shaft 22, a fixing block 25, and a mounting frame 24. The top of the fixing frame 17 is provided with several mounting frames 24. Each mounting frame 24 has a rectangular hole on the side facing the coil 16. The locking block 21 is slidably disposed in the mounting frame 24 through the rectangular hole. A spring 20 is connected between the mounting frame 24 and the side of the locking block 21 away from the coil 16. The locking block 21 has a sliding groove 23, which is inclined on the surface of the locking block 21. The top of the fixing frame 17 is provided with a fixing block 25. The top of the mounting frame 24 is provided with a U-shaped pull rod 18, which slides through the fixing block 25. The bottom of the U-shaped pull rod 18 is provided with a connecting shaft 22, which is located in the sliding groove 23 on the locking block 21. The right side of the fixing frame 17 has a round hole, and the right side of the U-shaped pull rod 18 is provided with a pin 19, which passes through the U-shaped pull rod 18 and is located in the round hole.

[0022] like Figure 3As shown, it also includes a connecting block 13, a connecting rod 14 and an electric push rod 15, the rear side of the outer cover 4 is provided with the connecting block 13, the rear side of the shell 1 is provided with the electric push rod 15, the connecting rod 14 is rotatably arranged in the connecting block 13, and one end of the connecting rod 14 away from the connecting block 13 is connected to the telescopic rod of the electric push rod 15.

[0023] As shown, Figure 2 As shown, it also includes a spare oil tank 9, a valve 10, an oil pipe 11, a measuring cylinder 6, a pressure gauge 7 and a thermometer 8, the right side of the shell 1 is connected with the oil pipe 11, one end of the oil pipe 11 away from the shell 1 is connected with the valve 10, the top of the valve 10 is connected with the spare oil tank 9, the right side of the shell 1 is provided with the measuring cylinder 6, the measuring cylinder 6 is connected at the right side bottom of the shell 1 and penetrates through the shell 1, and the right side of the shell 1 is provided with the pressure gauge 7 and the thermometer 8, the contacts of the pressure gauge 7 and the thermometer 8 are located inside the shell 1, the pressure gauge 7 and the thermometer 8 respectively monitor the pressure and temperature in the transformer in real time through the contacts, improve the operation safety and reliability of the transformer, and reduce the risk of failure.

[0024] When the transformer needs to be overhauled, the transformer is first powered off, then the oil drain valve 26 is opened, the insulating oil in the transformer is discharged, and then the overhaul worker closes the oil drain valve 26 and starts the electric push rod 15, the telescopic rod of the electric push rod 15 moves downward to drive the connecting rod 14 to move downward to lift the connecting block 13, thereby opening the outer cover 4, then the electric push rod 15 is closed, the overhaul personnel pull out the latch 19 from the round hole and pull the U-shaped pull rod 18 to the right, the U-shaped pull rod 18 extrudes the clamping block 21 through the connecting shaft 22 and the sliding groove 23, so that the clamping block 21 moves into the mounting frame 24, thereby no longer clamping the coil 16, and then the latch 19 is put down and moves downward under the action of gravity to contact the right side of the fixing frame 17 to clamp the U-shaped pull rod 18, at this time, the coil 16 is lifted out of the fixing frame 17 through the lifting equipment, the overhaul personnel check whether the coil 16 is damaged or defective, then replace the damaged coil 16 according to the test result, and then the new coil 16 or the undamaged coil 16 is reloaded into the fixing frame 17, the latch 19 is pulled out, the clamping block 21 moves out of the mounting frame 24 under the action of the spring 20, the sliding groove 23 extrudes the connecting shaft 22, thereby moving the U-shaped pull rod 18 to the left to return to the original position, and then the latch 19 is put back into the through hole to fix the U-shaped pull rod 18. After pouring the insulating oil into the transformer, the electric push rod 15 is started, the telescopic rod on the electric push rod 15 moves upward to drive the connecting rod 14 to move upward to top the connecting block 13 back to the original position, thereby closing the outer cover 4, and finally the electric push rod 15 is closed.

[0025] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An oil immersed transformer which is convenient for maintenance, characterized by, The utility model relates to a kind of electric heating oil tank, including shell (1), terminal post (2), radiator (3), outer cover (4), window (5), hinge (12), coil (16), fixed frame (17), oil discharge valve (26) and fixing mechanism, the front and rear sides of shell (1) are equipped with terminal post (2), the left side of shell (1) is equipped with radiator (3), the top of shell (1) is equipped with outer cover (4), the top of the rear side of shell (1) and the bottom of the rear side of outer cover (4) are connected with hinge (12), the shell (1) and outer cover (4) are connected by hinge (12) hinged, the top of outer cover (4) is equipped with window (5), the bottom of the rear side of shell (1) is equipped with oil discharge valve (26), the inside of shell (1) is equipped with fixed frame (17) and coil (16), and coil (16) is located in fixed frame (17), the top of fixed frame (17) is equipped with several fixing mechanisms.

2. An oil immersed transformer convenient for maintenance according to claim 1, characterized in that, The fixing mechanism includes U-shaped pull rod (18), bolt (19), spring (20), clamping block (21), connecting shaft (22), fixed block (25) and mounting frame (24), the top of fixed frame (17) is equipped with several mounting frames (24), each mounting frame (24) is opened with rectangular hole towards the side of coil (16), clamping block (21) is slidably arranged in mounting frame (24) by rectangular hole, spring (20) is connected between mounting frame (24) and clamping block (21), the groove (23) is opened on clamping block (21), the top of fixed frame (17) is equipped with fixed block (25), the top of mounting frame (24) is equipped with U-shaped pull rod (18), U-shaped pull rod (18) is slidably penetrated through fixed block (25), the bottom of U-shaped pull rod (18) is equipped with connecting shaft (22), connecting shaft (22) is located in the groove (23) on clamping block (21), the right side of fixed frame (17) is opened with round hole, the right side of U-shaped pull rod (18) is equipped with bolt (19), bolt (19) penetrates U-shaped pull rod (18) and is located in round hole.

3. An oil immersed transformer convenient for maintenance according to claim 2, characterized in that, The window (5) is translucent material.

4. An oil immersed transformer convenient for maintenance according to claim 3, characterized in that, It further includes connecting block (13), connecting rod (14) and electric push rod (15), the rear side of outer cover (4) is equipped with connecting block (13), the rear side of shell (1) is equipped with electric push rod (15), connecting rod (14) is rotatably arranged in connecting block (13), the end of connecting rod (14) away from connecting block (13) is connected on telescopic rod of electric push rod (15).

5. An oil immersed transformer convenient for maintenance according to claim 4, characterized in that, It further includes standby oil tank (9), valve (10), oil pipe (11) and measuring cylinder (6), the right side of shell (1) is connected with oil pipe (11), the end of oil pipe (11) away from shell (1) is connected with valve (10), valve (10) top is connected with standby oil tank (9), the right side of shell (1) is equipped with measuring cylinder (6), the measuring cylinder (6) is connected at the right side bottom of shell (1), and penetrates shell (1).

6. An oil immersed transformer convenient for maintenance according to claim 5, characterized in that, It further includes barometer (7) and thermometer (8), the right side of shell (1) is equipped with barometer (7) and thermometer (8), the contact of barometer (7) and thermometer (8) is located inside shell (1).

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