Filling device for barreled transformer oil

Abstract

The utility model relates to the technical field of filling devices, and provides a filling device for barreled transformer oil, which comprises a bottom plate, an oil barrel, an oil inlet hopper, a cover plate, an oil injection unit, an oil injection pipeline, a nitrogen cylinder and a nitrogen pipeline, the cover plate is rotationally installed on one side of the oil inlet hopper through a sealing assembly, a sealing groove matched with the oil inlet hopper is formed in the bottom end of the cover plate, a sealing gasket is fixedly connected into the sealing groove, the oiling unit is detachably connected to one side of the oil barrel, an oiling assembly is arranged between the oiling pipeline and the oiling unit, and a valve is arranged on the oil inlet pipe. The nitrogen cylinder is detachably arranged on the other side of the oil drum, the nitrogen pipeline is communicated with one side of the nitrogen cylinder through the nitrogen assembly, and a gas inlet valve is arranged on the gas inlet pipe. By means of the technical scheme, the problem that transformer oil makes full contact with moisture in air during oil injection in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filling device technical field, concretely relates to a filling device for barreled transformer oil. BACKGROUND

[0002] Generally, 220kV transformer is transported in two ways of nitrogen filling or oil filling, and 110kV transformer is generally transported in oil filling, and in the process of transporting the transformer, barreled added oil is carried for supplying oil tank and finned radiator after on-site installation is finished;

[0003] The oil drum in the prior art is mostly made of plastic, and during filling, oil is usually injected into the oil drum by directly filling the oil injection pipeline from the barrel opening, but this oil injection method can make the transformer oil fully contact with air during oil injection, and the moisture in the air can be mixed into the transformer oil, especially in the humid season, the moisture mixed into the transformer oil can make the micro water content of the transformer oil rise or even exceed the standard, can make the dielectric loss factor of the transformer oil become large, and affect the reliable operation and service life of the transformer; meanwhile, the electrical performance of the transformer oil is greatly harmed, the insulation performance is greatly reduced, and finally the transformer is internally broken down, which seriously affects the safe operation of the transformer; and can accelerate the aging of the insulation material, reduce the insulation strength of the insulation material, and the above three adverse factors can show that the transformer oil micro water exceeding the standard has a far-reaching and significant influence on the safe and reliable operation of the transformer and the entire power grid. SUMMARY

[0004] The utility model provides a filling device for barreled transformer oil, solves the problem that the transformer oil fully contacts with the moisture in the air during oil injection in the related art.

[0005] The technical scheme of the utility model is as follows: a filling device for barreled transformer oil, comprising a bottom plate, an oil drum, an oil inlet hopper, a cover plate, an oil injection unit, an oil injection pipeline, a nitrogen cylinder and a nitrogen pipeline;

[0006] The oil drum is detachably connected to the top end of the bottom plate;

[0007] The oil inlet hopper is communicated to the top end of the oil drum;

[0008] The cover plate is rotatably installed on one side of the oil inlet hopper through a sealing assembly;

[0009] The oil injection unit is detachably connected to one side of the oil drum;

[0010] An oil injection assembly is arranged between the oil injection pipeline and the oil injection unit;

[0011] The nitrogen cylinder is detachably arranged on the other side of the oil drum;

[0012] The nitrogen pipeline is communicated with one side of the nitrogen cylinder through a nitrogen assembly.

[0013] Further, the oil injection assembly comprises:

[0014] An oil inlet pipe is communicated with one side of the oil injection machine group;

[0015] An elastic pipe is communicated between the oil inlet pipe and the oil injection pipeline;

[0016] A support column is fixedly connected to the top end of the bottom plate;

[0017] A first electric cylinder is installed at the top end of the support column;

[0018] A push plate is fixedly connected to the output end of the first electric cylinder;

[0019] Two push blocks are detachably connected between the push plate and the oil injection pipeline.

[0020] Further, the nitrogen assembly comprises:

[0021] An air inlet pipe is communicated with the nitrogen cylinder;

[0022] A telescopic pipe is communicated between the air inlet pipe and the nitrogen pipeline;

[0023] A support frame is fixedly connected to the top end of the bottom plate;

[0024] A second electric cylinder is installed at the top end of the support frame;

[0025] A moving block is fixedly connected to the output end of the second electric cylinder, and a moving groove matched with the nitrogen pipeline is formed in the moving block.

[0026] Further, the adjusting assembly comprises:

[0027] A third electric cylinder is installed at one side of the oil drum;

[0028] A connecting barrel is fixedly connected to the output end of the third electric cylinder;

[0029] An electric motor is installed on the connecting barrel;

[0030] A connecting strip is fixedly connected between the output end of the electric motor and the cover plate.

[0031] Further, two connecting blocks are symmetrically connected to the two pushing blocks, and connecting screws are threadedly connected between the two adjacent connecting blocks.

[0032] Further, a sealing groove matched with the oil inlet hopper is formed at the bottom end of the cover plate, and a sealing gasket is fixedly connected in the sealing groove.

[0033] Further, a connecting plate is fixedly connected to one side of the oil drum, and a connecting groove matched with the third electric cylinder is formed in the connecting plate.

[0034] Further, grooves, placing grooves and mounting grooves are formed at the bottom end of the bottom plate, and the nitrogen cylinder, the oil drum and the oil filling machine group are respectively located in the grooves, the placing grooves and the mounting grooves.

[0035] Further, a valve is arranged on the oil inlet pipe, and an air inlet valve is arranged on the air inlet pipe.

[0036] Further, damping pads are fixedly connected in the grooves, the placing grooves and the mounting grooves.

[0037] The working principle and beneficial effects of the utility model are as follows:

[0038] 1、in the utility model, through the bottom plate, it is convenient for supporting and installing the oil drum, the oil filling machine group and the nitrogen cylinder, through the oil inlet hopper, the nitrogen pipeline and the oil filling pipeline can enter the oil drum, through the nitrogen assembly, it is convenient for passing the nitrogen into the oil drum, through the use of the different relative molecular mass of nitrogen, air and water vapor, before filling the transformer oil, the air and water vapor are driven out from the drum by using the nitrogen, so as to isolate the contact between the transformer oil and air, water vapor, the micro water content in the transformer oil is greatly reduced, the normal operation of the transformer is ensured, and the service life of the transformer is prolonged.

[0039] 2、in the utility model, through the cooperation of the oil filling pipeline and the oil filling assembly, it is convenient for the transformer oil to enter the oil filling machine group for filling, and through the sealing assembly, it is convenient for the cover plate to rotate, so as to seal the oil drum after oil filling, so that the contact time and contact area of the transformer oil and air can be reduced, the water content in the transformer oil is reduced, the quality of the transformer oil is improved, and the adverse effect of the transformer operation in the transformer oil filling stage is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0040] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0041] Figure 1 It is the whole structure schematic view of the utility model;

[0042] Figure 2 It is the utility modelFigure 1 Enlarged structural schematic view at A in the middle;

[0043] Figure 3 Structural schematic view of the nitrogen pipeline, support frame and moving block cooperation of the utility model;

[0044] Figure 4 Structural schematic view of the cover plate, connecting strip and connecting plate cooperation of the utility model.

[0045] In the figure: 1, bottom plate; 2, oil drum; 3, oil inlet hopper; 4, cover plate; 5, oil filling machine set; 6, oil filling pipeline; 7, nitrogen cylinder; 8, nitrogen pipeline; 9, oil inlet pipe; 10, elastic pipe; 11, support column; 12, first electric cylinder; 13, push plate; 14, push block; 15, air inlet pipe; 16, telescopic pipe; 17, support frame; 18, second electric cylinder; 19, moving block; 20, third electric cylinder; 21, connecting cylinder; 22, motor; 23, connecting strip; 24, connecting block; 25, connecting screw; 26, connecting plate. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0047] As Figures 1-4 shown, the embodiment provides a filling device for barreled transformer oil, which comprises a bottom plate 1, an oil drum 2, an oil inlet hopper 3, a cover plate 4, an oil filling machine set 5, an oil filling pipeline 6, a nitrogen cylinder 7 and a nitrogen pipeline 8. The oil drum 2 is detachably connected to the top end of the bottom plate 1. The oil inlet hopper 3 is communicated to the top end of the oil drum 2, so that the oil filling pipeline 6 and the nitrogen pipeline 8 can extend into the oil drum 2. The cover plate 4 is rotatably installed on one side of the oil inlet hopper 3 through a sealing assembly. A sealing groove matched with the oil inlet hopper 3 is formed in the bottom end of the cover plate 4, and a sealing gasket is fixedly connected in the sealing groove. The oil inlet hopper 3 can be stably and tightly sealed by the cover plate 4, so as to reduce the contact between the transformer oil in the oil drum 2 and air. The oil filling machine set 5 is detachably connected to one side of the oil drum 2. An oil filling assembly is arranged between the oil filling pipeline 6 and the oil filling machine set 5. A valve is arranged on the oil inlet pipe 9. When the oil inlet valve on the oil inlet pipe 9 is opened, the transformer oil can enter the oil filling machine set 5. The nitrogen cylinder 7 is detachably arranged on the other side of the oil drum 2. The nitrogen pipeline 8 is communicated to one side of the nitrogen cylinder 7 through a nitrogen assembly. An air inlet valve is arranged on the air inlet pipe 15. When the air inlet valve on the air inlet pipe 15 is opened, nitrogen can be introduced into the oil drum 2.

[0048] Reference Figure 1 andFigure 2 The oil injection assembly comprises an oil inlet pipe 9, an elastic pipe 10, a support column 11, a first electric cylinder 12, a pushing plate 13 and pushing blocks 14. The oil inlet pipe 9 is connected to one side of the oil injection machine group 5. The elastic pipe 10 is connected between the oil inlet pipe 9 and the oil injection pipeline 6. The elastic pipe 10 will expand or contract with the movement of the oil injection pipeline 6. The support column 11 is fixedly connected to the top end of the bottom plate 1. The first electric cylinder 12 is installed at the top end of the support column 11. The pushing plate 13 is fixedly connected to the output end of the first electric cylinder 12. The pushing blocks 14 are provided in two. The two pushing blocks 14 are detachably connected between the pushing plate 13 and the oil injection pipeline 6. Two connecting blocks 24 are symmetrically connected to each of the two pushing blocks 14. Connecting screws 25 are threadedly connected between the two connecting blocks 24. The connecting screws 25 facilitate the installation and removal of the pushing blocks 14 on the oil injection pipeline 6, so as to facilitate the connection and removal of the oil injection pipeline 6 and the pushing plate 13.

[0049] The pushing plate 13 is pushed by the first electric cylinder 12, so that the pushing plate 13 drives the oil injection pipeline 6 to move through the two pushing blocks 14, so as to adjust the use position of the oil injection pipeline 6, thereby facilitating the oil injection pipeline 6 to enter and exit the oil drum 2.

[0050] Reference Figure 3 The nitrogen assembly comprises an air inlet pipe 15, an elastic pipe 16, a support frame 17, a second electric cylinder 18 and a moving block 19. The air inlet pipe 15 is connected to the nitrogen cylinder 7. The elastic pipe 16 is connected between the air inlet pipe 15 and the nitrogen pipeline 8. The elastic pipe 16 will expand or contract with the movement of the nitrogen pipeline 8. The support frame 17 is fixedly connected to the top end of the bottom plate 1. The second electric cylinder 18 is installed at the top end of the support frame 17. The moving block 19 is fixedly connected to the output end of the second electric cylinder 18. A moving groove matching the nitrogen pipeline 8 is formed in the moving block 19, so as to stably support and place the nitrogen pipeline 8.

[0051] The moving block 19 is pushed by the second electric cylinder 18, so that the moving block 19 drives the nitrogen pipeline 8 to move, so as to adjust the position of the nitrogen pipeline 8, thereby facilitating the nitrogen pipeline 8 to enter and exit the oil drum 2.

[0052] Reference Figure 4 The adjusting assembly comprises a third electric cylinder 20, a connecting barrel 21, a motor 22 and a connecting strip 23. The third electric cylinder 20 is installed at one side of the oil drum 2. A connecting plate 26 is fixedly connected to one side of the oil drum 2. A connecting groove matching the third electric cylinder 20 is formed in the connecting plate 26, so as to stably install the third electric cylinder 20. The connecting barrel 21 is fixedly connected to the output end of the third electric cylinder 20. The motor 22 is installed on the connecting barrel 21. The connecting strip 23 is fixedly connected between the output end of the motor 22 and the cover plate 4.

[0053] The connecting cylinder 21 is pushed by the third electric cylinder 20, the position of the motor 22, the connecting strip 23 and the cover plate 4 can be adjusted, and meanwhile, the cover plate 4 can be rotated to the upper side of the oil inlet hopper 3 by rotating the connecting strip 23 through the motor 22, so that the oil inlet hopper 3 is sealed by the cover plate 4 after filling.

[0054] With reference to Figure 1 The bottom end of the bottom plate 1 is provided with a recess, a placing groove and a mounting groove, the nitrogen cylinder 7, the oil drum 2 and the oil filling machine group 5 are respectively located in the recess, the placing groove and the mounting groove, and the recess, the placing groove and the mounting groove are fixedly connected with damping pads;

[0055] The recess, the placing groove and the mounting groove facilitate the placement of the nitrogen cylinder 7, the oil drum 2 and the oil filling machine group 5 on the bottom plate 1, and meanwhile, the damping pads can increase the stability of the nitrogen cylinder 7, the oil drum 2 and the oil filling machine group 5 placed on the bottom plate 1.

[0056] It should be further explained that the relative molecular mass of nitrogen is 28, the relative molecular mass of water vapor in air is 18, the relative molecular mass of nitrogen is heavier than that of water vapor, when the two are mixed together, water vapor will gradually float to the upper layer of nitrogen, by using the difference in the relative molecular mass of the two, before filling transformer oil into the oil drum 2, a certain amount of nitrogen is filled into the oil drum 2, the water vapor in the oil drum 2 is discharged from the barrel opening at the top of the oil drum 2 by using nitrogen, and then the oil filling pipeline 6 is deeply inserted into the bottom of the barrel for filling, the nitrogen pipeline 8 needs to be taken out after the filling of transformer oil is completed, in this way, the secondary invasion of water vapor in air from the barrel opening position during the filling process can be prevented, the contact between transformer oil and air is further isolated, nitrogen is selected as the execution gas of this method because nitrogen itself is an inert gas, its chemical properties are stable, it will not react with transformer oil, its solubility in transformer oil is very low, it is not easy to dissolve into transformer oil, and it is low in price;

[0057] Compared with the original filling method, the new filling method is selected to fill two oil tanks 2 at the same time to ensure the consistency of external conditions during the experiment. During the filling, the A oil tank 2 is filled by the new filling method, and the B oil tank 2 is still filled by the original filling method. In addition, in order to ensure the accuracy of the data, the experiment is divided into multiple groups and carried out under different air humidity conditions. According to the national standard document (GB 50150-2016), the water content of the transformer oil should be ≤20 mg / L before the transformer is put into operation for the transformer with a voltage level of 110 kV and below. For the transformer with a voltage level of 220 kV, the water content of the transformer oil should be ≤15 mg / L. For the transformer with a voltage level of 330 kV-500 kV, the water content of the transformer oil should be ≤10 mg / L. Through comparison of the experimental data under different air humidity conditions, it is finally concluded that the micro water content (A) of the oil filled by the new filling method is about 6 mg / L lower than that (B) of the oil filled by the original filling method, that is, the new filling method has a significant effect of reducing the micro water content.

[0058] In the embodiment, first, the nitrogen cylinder 7, the oil tank 2 and the oil filling machine group 5 are respectively placed in the groove, the placing groove and the mounting groove, the motor 22 is started, the motor 22 drives the connecting strip 23 to rotate, the cover plate 4 is rotated to a position away from the oil inlet hopper 3, the first electric cylinder 12 and the second electric cylinder 18 are started, the first electric cylinder 12 pushes the pushing plate 13, the two pushing blocks 14 drive the oil filling pipeline 6 to move, the oil filling pipeline 6 is moved into the oil tank 2, at the same time, the second electric cylinder 18 can make the moving block 19 drive the nitrogen pipeline 8 to enter the oil tank 2, the air inlet valve is opened, nitrogen is slowly filled, the filling time of nitrogen is determined according to the size of the oil tank 2, according to the commonly used size of the oil tank 2 at the present stage 1.5 meters*1.5 meters, it is calculated that nitrogen needs to be continuously filled for about 5 minutes, then the water vapor in the tank can be discharged out of the oil tank 2, then the oil inlet valve is opened, and oil filling is started. During the oil filling, the oil flow speed needs to be controlled within 6 t / h, too fast filling will produce bubbles and other unknown effects, at the same time, the nitrogen pipeline 8 needs to continuously fill nitrogen into the tank until the transformer oil filling is completed, then the nitrogen pipeline 8 and the oil filling pipeline 6 are taken out, to prevent the water vapor in the air from invading the tank from the tank opening position again during the filling process, to further isolate the transformer oil from the air, after the oil filling is completed, the nitrogen pipeline 8 and the oil filling pipeline 6 are taken out, the cover plate 4 is rotated to the upper side of the oil inlet hopper 3, and the cover plate 4 is covered and installed on the oil inlet hopper 3 to seal the oil tank 2.

[0059] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A filling device for barreled transformer oil, characterized in that: include: Bottom plate (1); An oil barrel (2), the oil barrel (2) being detachably connected to the top end of the bottom plate (1); An oil inlet hopper (3), the oil inlet hopper (3) being connected to the top end of the oil barrel (2); A cover plate (4), the cover plate (4) being rotatably mounted on one side of the oil inlet hopper (3) via a sealing assembly; An oil filling unit (5), the oil filling unit (5) being detachably connected to one side of the oil barrel (2); An oil injection pipeline (6), wherein an oil injection component is provided between the oil injection pipeline (6) and the oil injection unit (5); A nitrogen bottle (7), the nitrogen bottle (7) being detachably arranged on the other side of the oil barrel (2); A nitrogen pipeline (8), wherein the nitrogen pipeline (8) is connected to one side of the nitrogen bottle (7) through a nitrogen component.

2. A filling device for barreled transformer oil according to claim 1, characterized in that: The oil injection assembly comprises: An oil inlet pipe (9), the oil inlet pipe (9) being connected to one side of the oil injection unit (5); an elastic tube (10), the elastic tube (10) being connected between the oil inlet pipe (9) and the oil injection pipeline (6); A support column (11), the support column (11) being fixedly connected to the top end of the base plate (1); a first electric cylinder (12), the first electric cylinder (12) being mounted on a top end of the support column (11); A push plate (13), the push plate (13) being fixedly connected to the output end of the first electric cylinder (12); A pushing block (14), wherein two pushing blocks (14) are provided, and the two pushing blocks (14) are detachably connected between the pushing plate (13) and the oil injection pipeline (6).

3. A filling device for barreled transformer oil according to claim 2, characterized in that: The nitrogen assembly comprises: an air intake pipe (15), the air intake pipe (15) being connected to the nitrogen bottle (7); a telescopic tube (16), the telescopic tube (16) being connected between the air inlet pipe (15) and the nitrogen pipeline (8); A support frame (17), the support frame (17) is fixedly connected to the top end of the base plate (1); a second electric cylinder (18), the second electric cylinder (18) being mounted on a top end of the support frame (17); A moving block (19), the moving block (19) is fixedly connected to the output end of the second electric cylinder (18), and a moving groove matching the nitrogen pipeline (8) is provided on the moving block (19).

4. A filling device for barreled transformer oil according to claim 3, characterized in that: Also includes: a third electric cylinder (20), the third electric cylinder (20) being installed on one side of the oil barrel (2); A connecting cylinder (21), wherein the connecting cylinder (21) is fixedly connected to the output end of the third electric cylinder (20); a motor (22), the motor (22) being mounted on the connecting tube (21); A connecting bar (23), wherein the connecting bar (23) is fixedly connected between the output end of the motor (22) and the cover plate (4).

5. A filling device for barreled transformer oil according to claim 4, characterized in that: Two connecting blocks (24) are symmetrically connected to the two pushing blocks (14), and connecting screws (25) are threadedly connected between two adjacent connecting blocks (24).

6. A filling device for barreled transformer oil according to claim 5, characterized in that: A sealing groove matching the oil inlet hopper (3) is provided at the bottom end of the cover plate (4), and a sealing gasket is fixedly connected in the sealing groove.

7. A filling device for barreled transformer oil according to claim 6, characterized in that: A connecting plate (26) is fixedly connected to one side of the oil barrel (2), and a connecting groove matching the third electric cylinder (20) is provided on the connecting plate (26).

8. The filling device for barreled transformer oil according to claim 7, characterized in that: A groove, a placement groove, and an installation groove are provided at the bottom end of the base plate (1); the nitrogen bottle (7), the oil barrel (2), and the oil injection unit (5) are respectively located in the groove, the placement groove, and the installation groove.

9. A filling device for barreled transformer oil according to claim 8, characterized in that: The oil inlet pipe (9) is provided with a valve, and the air inlet pipe (15) is provided with an air inlet valve.

10. A filling device for barreled transformer oil according to claim 9, characterized in that: Shock-absorbing pads are fixedly connected in the groove, the placement groove and the installation groove.

Images