Oil-immersed distribution transformer convenient for oil injection

Abstract

The utility model relates to the technical field of transformers, in particular to an oil-immersed distribution transformer convenient to inject oil, which comprises an oil-immersed box body, a radiator body and an oil level gauge body, a portable assembly mechanism is arranged on the side edge of the oil-immersed box body, a filtering and impurity removing mechanism is arranged above the oil level gauge body, and the radiator body is arranged on the oil-immersed box body. When the oil-immersed distribution transformer convenient to inject oil is used, the arc-shaped drainage piece and the soft diaphragm can form different shape structures through the dismounting and mounting process of the sealing cover, and the oil-immersed distribution transformer convenient to inject oil is convenient to use. When the sealing cover is detached, the sealing cover is matched with the mechanism for transmission, so that the arc-shaped drainage piece and the soft diaphragm can directly move upwards and be unfolded to form a complete funnel structure, the subsequent oil injection procedure can be carried out conveniently to a great extent through the design of enlarging the size of an oil inlet of the device, the overall structural design is ingenious, and the practical effect is high.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to an oil-immersed distribution transformer convenient for oil injection. Background Art

[0002] The oil-immersed distribution transformer is a transformer widely used in the power system, which is mainly used for the conversion and distribution of electric energy. Different from the dry-type transformer, the windings and iron cores of the oil-immersed transformer are immersed in insulating oil, having good heat dissipation performance and insulation performance;

[0003] The "oil-immersed distribution transformer" disclosed in the patent number "CN204010900U", this device has a certain toughness due to the plastic material, and the protective cover can be directly embedded into the annular groove on the cover body during installation. The transparent material allows the operator to clearly see the situation inside the protective cover, so as to better judge and adjust the tap-changer; due to the small oil injection port in the existing oil-immersed distribution transformer structure and it is set with a fixed size, it will cause the staff to easily leak oil to the outside of the device during oil injection. However, the above device does not make improvements to this problem, and the overall practical effect is somewhat poor. Summary of the Utility Model

[0004] The purpose of the utility model is to propose an oil-immersed distribution transformer convenient for oil injection to solve the above problems, improving the problem that the existing oil-immersed distribution transformer has a small oil injection port and is set with a fixed size, which leads to the staff easily leaking oil to the outside of the device during oil injection.

[0005] An oil-immersed distribution transformer convenient for oil injection includes an oil immersion tank body, a radiator body and an oil level gauge body: the radiator body is arranged on the side outer wall of the oil immersion tank body, the oil level gauge body is installed on the top outer wall of the oil immersion tank body, a portable assembly mechanism is arranged on the side of the oil immersion tank body, a filtering and impurity removing mechanism is arranged above the oil level gauge body, and a portable oil injection mechanism is arranged above the filtering and impurity removing mechanism. The portable assembly mechanism includes a positioning block, a first thread groove, a positioning slot, a second thread groove and a locking bolt. Two groups of positioning blocks are symmetrically arranged on the two side outer walls of the radiator body, the first thread groove is penetrated and opened on the side outer wall of the positioning block, two groups of positioning slots are symmetrically opened on the side outer wall of the oil immersion tank body, the second thread groove is opened on the side outer wall of the oil immersion tank body at the position of the positioning slot, and the first thread groove and the second thread groove are threadedly installed with the locking bolt.

[0006] Preferably, the opening diameter of the first thread groove is equal to the opening diameter of the second thread groove.

[0007] Preferably, the filtering and impurity removing mechanism includes an oil injection pipe, an annular thread groove, and an installation pipe. The top outer wall of the oil level gauge body is provided with an oil injection pipe. The top outer wall of the oil injection pipe is provided with an annular thread groove. The top outer wall of the oil injection pipe is fitted with an installation pipe.

[0008] Preferably, a thread ring is provided on the bottom outer wall of the installation pipe. The thread ring and the annular thread groove are threadedly installed. A limiting filter screen is installed on the inner wall of the side at the bottom end of the installation pipe.

[0009] Preferably, the portable oil injection mechanism includes a limiting pipe, a support ring, and a limiting T-shaped block. The top outer wall of the installation pipe is provided with a limiting pipe. A support ring is arranged inside the limiting pipe. Limiting T-shaped blocks are symmetrically arranged on the outer wall of the side at the bottom end of the support ring.

[0010] Preferably, limiting T-shaped grooves are symmetrically opened on the inner walls on both sides of the limiting pipe. The limiting T-shaped block and the limiting T-shaped groove are slidably connected. A support spring is connected between the bottom outer wall of the limiting T-shaped block and the bottom inner wall of the limiting T-shaped groove.

[0011] Preferably, arc-shaped drainage sheets are symmetrically and rotatably installed on the top outer wall of the support ring, and a soft film sheet is connected between the outer walls of the sides of two adjacent arc-shaped drainage sheets.

[0012] Preferably, a limiting thread groove is opened on the outer wall of the side at the top end of the limiting pipe, and a sealing cover is threadedly installed on the top outer wall of the limiting pipe.

[0013] The beneficial effects of the present utility model are:

[0014] 1. When the oil-immersed distribution transformer facilitating oil injection is in use, through the settings of the limiting pipe, the support ring, the limiting T-shaped block, the limiting T-shaped groove, the support spring, the arc-shaped drainage sheet, the soft film sheet, and the sealing cover, the arc-shaped drainage sheet and the soft film sheet can form different shape structures by the disassembly and assembly process of the sealing cover. When the sealing cover is removed, the arc-shaped drainage sheet and the soft film sheet can be directly moved upward and unfolded to form a complete funnel structure in cooperation with the transmission of the above-mentioned mechanism. Furthermore, through the design of increasing the size of the oil inlet of the device, the subsequent oil injection process can be carried out very conveniently. At the same time, when the sealing cover is reinstalled, the arc-shaped drainage sheet and the soft film sheet will be retracted back into the device for secondary use. The overall structure design is ingenious and the practical effect is strong;

[0015] 2. When the oil-immersed distribution transformer facilitating oil injection is in use, through the design of adding a limiting filter screen inside the installation pipe, when the oil flows through the limiting filter screen and into the device, the impurities entrained therein will be automatically isolated above the filter screen, thus ensuring the cleanliness of the oil used inside the device. Further, the installation pipe is designed to be detachable, facilitating the subsequent cleaning process of the filter screen. At the same time, through mechanical transmission, the radiator is designed to be detachable. Only by regularly removing the radiator from the side of the device for cleaning can its heat dissipation performance be maintained. Compared with the general integrated radiator, this design facilitates the cleaning work of the radiator, making it not easy to accumulate dust inside, and further ensuring the overall use safety of the device. The overall structural design is ingenious and has good practical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is the three-dimensional structural schematic diagram of the portable assembly mechanism of the present utility model;

[0018] Figure 3 For the present utility model Figure 2 is the enlarged three-dimensional structural schematic diagram at position A in

[0019] Figure 4 is the three-dimensional structural schematic diagram of the filtering and impurity removal mechanism of the present utility model;

[0020] Figure 5 is the three-dimensional structural schematic diagram of the portable oil injection mechanism of the present utility model.

[0021] In the figure: 1. Oil immersion tank body; 2. Radiator body; 3. Oil level gauge body; 4. Portable assembly mechanism; 41. Positioning block; 42. First thread groove; 43. Positioning card slot; 44. Second thread groove; 45. Locking bolt; 5. Filtering and impurity removal mechanism; 51. Oil injection pipe; 52. Annular thread groove; 53. Installation pipe; 54. Thread ring; 55. Limiting filter screen; 6. Portable oil injection mechanism; 61. Limiting pipe; 62. Support ring; 63. Limiting T-shaped block; 64. Limiting T-shaped groove; 65. Support spring; 66. Arc-shaped drainage piece; 67. Soft film piece; 68. Sealing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In specific implementation: As Figures 1-5 shown, an oil-immersed distribution transformer facilitating oil injection includes an oil-immersed tank body 1, a radiator body 2, and an oil level gauge body 3. A radiator body 2 is arranged on the outer side wall of the side of the oil-immersed tank body 1, an oil level gauge body 3 is installed on the outer side wall of the top of the oil-immersed tank body 1, a portable assembly mechanism 4 is arranged on the side of the oil-immersed tank body 1, a filtering and impurity removing mechanism 5 is arranged above the oil level gauge body 3, and a portable oil injection mechanism 6 is arranged above the filtering and impurity removing mechanism 5. The portable assembly mechanism 4 includes a positioning block 41, a first threaded groove 42, a positioning slot 43, a second threaded groove 44, and a locking bolt 45. Two groups of positioning blocks 41 are symmetrically arranged on the outer side walls of both sides of the radiator body 2. A first threaded groove 42 is formed through the outer side wall of the positioning block 41. Two groups of positioning slots 43 are symmetrically formed on the outer side wall of the side of the oil-immersed tank body 1. A second threaded groove 44 is formed on the outer side wall of the side of the oil-immersed tank body 1 at the position of the positioning slot 43. The first threaded groove 42 and the second threaded groove 44 are threadedly installed with the locking bolt 45.

[0024] When the radiator body 2 accumulates a lot of dust and needs to be removed from the side of the oil-immersed tank body 1 for cleaning, during disassembly, only the locking bolt 45 needs to be completely screwed out from the inside of the first threaded groove 42. Then, the positioning block 41 changes from the locked state to the movable state. Subsequently, the positioning block 41 together with the radiator body 2 can be directly removed from the side of the oil-immersed tank body 1. When reassembling after cleaning, at this time, only the radiator body 2 needs to be adjusted to the appropriate position and then the positioning block 41 on its side is pushed into the positioning slot 43 at the corresponding position. When the positioning block 41 moves to the bottom end of the positioning slot 43, at this time, the first threaded groove 42 and the second threaded groove 44 are in a corresponding overlapping state. Subsequently, the locking bolt 45 is directly passed through the first threaded groove 42 and screwed to the bottom end of the second threaded groove 44 to complete the locking installation of the radiator body 2.

[0025] The opening diameter of the first threaded groove 42 is equal to the opening diameter of the second threaded groove 44. Here, the first threaded groove 42 and the second threaded groove 44 are set to have the same opening diameter, so that the above-mentioned locking bolt 45 can be more closely fitted when installed with the first threaded groove 42 and the second threaded groove 44, and it is not easy to loosen during subsequent use.

[0026] The impurity filtering mechanism 5 includes an oil injection pipe 51, an annular thread groove 52, and a mounting pipe 53. The top outer wall of the oil level gauge body 3 is provided with the oil injection pipe 51. The top outer wall of the oil injection pipe 51 is provided with the annular thread groove 52. The top outer wall of the oil injection pipe 51 is fitted with the mounting pipe 53. The bottom outer wall of the mounting pipe 53 is provided with a thread ring 54. The thread ring 54 and the annular thread groove 52 are threadedly installed. The inner wall of the side at the bottom position of the mounting pipe 53 is installed with a limit filter screen 55. When the oil flows into the device through the oil injection pipe 51, due to the setting of the limit filter screen 55 here, the solid impurity particles carried in the oil will be automatically filtered and isolated above the limit filter screen 55. When it is necessary to remove the oil injection pipe 51 from above the oil level gauge body 3 to clean the impurity particles above the limit filter screen 55, at this time, only need to rotate the mounting pipe 53 until the thread ring 54 at its bottom completely disengages from the annular thread groove 52. The installation is the same reason.

[0027] The portable oil injection mechanism 6 includes a limit pipe 61, a support ring 62, and a limit T-shaped block 63. The top outer wall of the mounting pipe 53 is provided with the limit pipe 61. The inside of the limit pipe 61 is provided with the support ring 62. The side outer walls at the bottom position of the support ring 62 are symmetrically provided with the limit T-shaped blocks 63. The two inner walls of the limit pipe 61 are symmetrically provided with limit T-shaped grooves 64. The limit T-shaped blocks 63 and the limit T-shaped grooves 64 are slidably connected. A support spring 65 is connected between the bottom outer wall of the limit T-shaped block 63 and the bottom inner wall of the limit T-shaped groove 64. The top outer walls of the support ring 62 are symmetrically and rotatably installed with arc-shaped drainage sheets 66. And a soft film 67 is connected between the side outer walls of two adjacent arc-shaped drainage sheets 66. The side outer wall at the top position of the limit pipe 61 is provided with a limit thread groove. And a sealing cover 68 is threadedly installed on the top outer wall of the limit pipe 61.

[0028] When it is necessary to inject oil to supplement the inside of the oil immersion tank body 1, first, the sealing cover 68 needs to be unscrewed from the top of the limit pipe 61. Then the support spring 65 will automatically reset and extend without the extrusion and limiting effect of the sealing cover 68 and push against the limit T-shaped block 63 to move upward. Then when the limit T-shaped block 63 moves, it will automatically slide inside the limit T-shaped groove 64 and drive the support ring 62 to move upward. When the support ring 62 moves upward, it will automatically drive the arc-shaped drainage sheets 66 and the soft film 67 to move upward synchronously. Then when the arc-shaped drainage sheets 66 and the soft film 67 move above the limit pipe 61, at this time, the arc-shaped drainage sheets 66 and the soft film 67 will automatically unfold to form a funnel structure without the limiting effect of the limit pipe 61, thus facilitating the subsequent oil injection process. After the oil injection is completed, the sealing cover 68 is screwed back to the outside of the limit pipe 61. At this time, the arc-shaped drainage sheets 66 and the soft film 67 will be squeezed by the sealing cover 68 and retracted back into the limit pipe 61 again. The principle is the same as above.

[0029] When the utility model is in use and oil needs to be filled and supplemented into the oil immersion tank body 1, first, the sealing cover 68 needs to be unscrewed from the top of the limiting pipe 61. Then, the supporting spring 65 will automatically reset and extend without the extrusion and limiting effect of the sealing cover 68 and push the limiting T-shaped block 63 to move upward. When the limiting T-shaped block 63 moves, it will automatically slide inside the limiting T-shaped groove 64 and drive the supporting ring 62 to move upward. When the supporting ring 62 moves upward, it will automatically drive the arc-shaped drainage piece 66 and the soft film piece 67 to move upward synchronously. Then, when the arc-shaped drainage piece 66 and the soft film piece 67 move above the limiting pipe 61, the arc-shaped drainage piece 66 and the soft film piece 67 will automatically unfold to form a funnel structure without the limiting effect of the limiting pipe 61, thus facilitating the subsequent oil filling process. Then, the oil is directly poured into the funnel structure formed by the arc-shaped drainage piece 66 and the soft film piece 67, and then the oil will be automatically transported into the oil injection pipe 51 through the drainage of the arc-shaped drainage piece 66 and the soft film piece 67;

[0030] When the oil flows into the device through the oil injection pipe 51, due to the setting of the limiting filter screen 55, the solid impurity particles carried in the oil will be automatically filtered and isolated above the limiting filter screen 55. After the oil filling is completed, the sealing cover 68 is screwed back onto the outside of the limiting pipe 61. At this time, the arc-shaped drainage piece 66 and the soft film piece 67 will be pressed by the sealing cover 68 and retract back into the limiting pipe 61 again, with the same principle as above.

[0031] When it is necessary to remove the oil injection pipe 51 from above the oil level gauge body 3 to clean the impurity particles above the limiting filter screen 55, only need to rotate the installation pipe 53 until the thread ring 54 at its bottom completely disengages from the annular thread groove 52, and the installation is the same.

[0032] When the radiator body 2 accumulates a lot of dust and needs to be removed from the side of the oil immersion tank body 1 for cleaning, during disassembly, only need to completely screw out the locking bolt 45 from the inside of the first thread groove 42. Then, the positioning block 41 changes from the locked state to the movable state. Subsequently, directly remove the positioning block 41 together with the radiator body 2 from the side of the oil immersion tank body 1. When reassembling after cleaning, only need to adjust the radiator body 2 to the appropriate position and then push the positioning block 41 on its side into the positioning slot 43 at the corresponding position. When the positioning block 41 moves to the bottom of the positioning slot 43, at this time, the first thread groove 42 and the second thread groove 44 are in a corresponding and overlapping state. Then, directly pass the locking bolt 45 through the first thread groove 42 and screw it to the bottom of the second thread groove 44 to complete the locking installation of the radiator body 2;

[0033] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil-immersed distribution transformer that is easy to fill with oil, characterized in that: The invention comprises an oil-immersed tank body (1), a radiator body (2) and an oil level gauge body (3): the radiator body (2) is arranged on the side outer wall of the oil-immersed tank body (1), the oil level gauge body (3) is installed on the top outer wall of the oil-immersed tank body (1), a portable assembly mechanism (4) is arranged on the side of the oil-immersed tank body (1), a filtering and impurity removal mechanism (5) is arranged above the oil level gauge body (3), a portable oil filling mechanism (6) is arranged above the filtering and impurity removal mechanism (5), and the portable assembly mechanism (4) comprises a positioning block (41), a first thread groove (42), a positioning A card slot (43), a second threaded slot (44) and a locking bolt (45), two groups of positioning card blocks (41) are symmetrically arranged on the outer walls on both sides of the radiator body (2), the side outer walls of the positioning card blocks (41) are penetrated with a first threaded slot (42), the side outer walls of the oil-immersed tank body (1) are symmetrically provided with two groups of positioning card slots (43), the side outer walls of the oil-immersed tank body (1) are located at the position of the positioning card slot (43) and a second threaded slot (44), and the first threaded slot (42) and the second threaded slot (44) are threadedly installed with the locking bolt (45).

2. The oil-immersed distribution transformer that is easy to fill with oil according to claim 1, characterized in that: The opening diameter of the first thread groove (42) is equal to the opening diameter of the second thread groove (44).

3. The oil-immersed distribution transformer that is easy to fill with oil according to claim 1, characterized in that: The filtering and impurity removal mechanism (5) comprises an oil filling pipe (51), an annular thread groove (52) and a mounting pipe (53); the top outer wall of the oil level gauge body (3) is provided with the oil filling pipe (51); the top outer wall of the oil filling pipe (51) is provided with an annular thread groove (52); and the top outer wall of the oil filling pipe (51) is provided with the mounting pipe (53) in close contact with the top outer wall.

4. The oil-immersed distribution transformer that is easy to fill with oil according to claim 3 is characterized in that: The outer wall of the bottom end of the installation tube (53) is provided with a threaded ring (54), and the threaded ring (54) and the annular threaded groove (52) are threadedly installed. The inner wall of the side of the installation tube (53) at the bottom end is provided with a limited filter screen (55).

5. The oil-immersed distribution transformer that is easy to fill with oil according to claim 3 is characterized in that: The portable oil filling mechanism (6) comprises a limiting tube (61), a support ring (62) and a limiting T-shaped block (63); the limiting tube (61) is arranged on the top outer wall of the mounting tube (53); the supporting ring (62) is arranged inside the limiting tube (61); and the limiting T-shaped block (63) is symmetrically arranged on the side outer wall of the supporting ring (62) at the bottom position.

6. The oil-immersed distribution transformer that is easy to fill with oil according to claim 5, characterized in that: The inner walls on both sides of the limiting tube (61) are symmetrically provided with limiting T-shaped grooves (64); the limiting T-shaped block (63) and the limiting T-shaped groove (64) are slidably connected; a supporting spring (65) is connected between the bottom outer wall of the limiting T-shaped block (63) and the bottom inner wall of the limiting T-shaped groove (64).

7. The oil-immersed distribution transformer that is easy to fill with oil according to claim 6, characterized in that: An arc-shaped drainage sheet (66) is symmetrically mounted on the outer wall of the top end of the support ring (62), and a soft membrane sheet (67) is connected between the side outer walls of two adjacent arc-shaped drainage sheets (66).

8. The oil-immersed distribution transformer that is easy to fill with oil according to claim 7, characterized in that: The side outer wall of the limiting tube (61) at the top position is provided with a limiting thread groove, and the top outer wall of the limiting tube (61) is threadedly mounted with a sealing cover (68).

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