Auxiliary oil injection device of transformer

Abstract

The auxiliary oil injection device comprises a transformer body, an oil injection opening is formed in the top of the transformer body, a flow guide cavity is formed below the oil injection opening, a flow guide assembly is arranged in the flow guide cavity, an oil pan is arranged at the bottom of the transformer body, and an oil discharge assembly is arranged on the oil pan. A liquid level monitoring assembly is arranged in the transformer body; oil can be smoothly and uniformly injected into the transformer body by arranging the flow guide assembly, so that impact on elements in the transformer body is effectively avoided, meanwhile, the oil discharge assembly is arranged at the bottom, impurities deposited at the bottom of the transformer can be cleaned up, the service life of the transformer is guaranteed, and the whole device is compact in structure and convenient to use. Internal elements are not affected, and the size of the transformer does not need to be additionally enlarged.

Description

Technical Field

[0001] The invention relates to the field of transformers, and in particular to an auxiliary oil injection device for transformers. Background Art

[0002] Transformer is the basic equipment for power transmission and distribution, and is widely used in industries, agriculture, transportation, urban communities and other fields. It is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, secondary coil and iron core (magnetic core). The main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0003] The existing transformer oil filling is directly filled into the transformer oil tank through the oil filling hole on the top of the transformer. It is difficult to control the oil filling amount during oil filling, and the oil with a large flow rate during oil filling is easy to cause damage to the electrical components in the transformer. In order to solve the above problems, patent document CN202010980766.6 discloses an auxiliary oil filling device for a transformer, which includes a transformer body and an auxiliary oil filling device. An oil filling port is provided at the top of the transformer body. The auxiliary oil filling device includes a shunt box and a control box. The shunt box is fixedly installed at the bottom end of the oil filling port and is connected to the oil filling port. A plurality of shunt pipes are connected to the bottom of the shunt box. The other ends of the shunt pipes are all arranged downward and are all arranged close to the bottom surface of the transformer body. A guide rod is vertically fixedly installed at the bottom of the shunt box, and a float-type liquid level sensor is installed on the guide rod. The shunt box is fixedly installed with a fixed seat on one side close to the connection of the guide rod, and an air pressure sensor is fixedly installed on the fixed seat. Although the auxiliary oil filling device can avoid direct impact on internal components and has a liquid level monitoring function, the above components all need to be inserted into the interior of the transformer, which limits the assembly of components inside the transformer and requires the transformer to be designed to be larger, affecting its use.

[0004] Therefore, there is an urgent need for an auxiliary oil filling device for a transformer that can solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an auxiliary oil filling device for a transformer to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an auxiliary oil filling device for a transformer, comprising a transformer body, wherein an oil filling port is provided on the top of the transformer body, a flow guide cavity is provided below the oil filling port, a flow guide component is provided in the flow guide cavity, an oil pan is provided at the bottom of the transformer body, an oil drain component is provided on the oil pan, and a liquid level monitoring component is provided in the transformer body.

[0008] Preferably, a filter is provided in the oil filling port.

[0009] Preferably, an arc-shaped plate is provided in the guide cavity, and a drainage groove is provided on the arc-shaped plate.

[0010] Preferably, the flow guide assembly comprises a fixed bracket, a stepped flow guide plate is fixed on the fixed bracket, a buffer groove is provided on the stepped flow guide plate, and a flow guide pipe is connected to the bottom of the buffer groove.

[0011] Preferably, a transparent observation window is provided on the oil pan.

[0012] Preferably, the oil drainage assembly comprises a corrugated bottom plate, the corrugated bottom plate is fixed to the bottom of the oil pan, an oil drainage groove is provided at the bottom of the corrugated bottom plate, a sealing strip is provided outside the oil drainage groove, and the sealing strip is connected to the corrugated bottom plate by a buckle.

[0013] Preferably, a sealing ring is provided between the corrugated bottom plate and the oil pan.

[0014] Preferably, the inner surface of the corrugated bottom plate is coated with a drag-reducing coating.

[0015] Preferably, the liquid level monitoring assembly comprises a liquid level tube, the bottom of which is in communication with the transformer body, a photoelectric sensor is provided on the outside of the liquid level tube, and the photoelectric sensor is wirelessly connected to the monitoring terminal via a wireless signal transmitter.

[0016] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0017] The present invention provides an auxiliary oil filling device for a transformer, comprising a transformer body, an oil filling port is provided on the top of the transformer body, a flow guide cavity is provided below the oil filling port, a flow guide component is provided in the flow guide cavity, an oil pan is provided at the bottom of the transformer body, an oil drain component is provided on the oil pan, and a liquid level monitoring component is provided in the transformer body; by providing the flow guide component, oil can be smoothly and evenly injected into the interior of the transformer body, thereby effectively avoiding impact on components in the transformer body; and at the same time, the oil drain component is provided at the bottom, so that impurities deposited at the bottom of the transformer can be cleaned, thereby ensuring the service life of the transformer, and the entire device has a compact structure, will not affect internal components, and does not need to additionally expand the volume of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A cross-sectional view of an auxiliary oil injection device for a transformer provided by the present invention;

[0020] Figure 2 This is a schematic structural diagram of the arc-shaped plate portion of an auxiliary oil filling device for a transformer provided by the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide an auxiliary oil filling device for a transformer to solve the problems existing in the prior art.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment 1:

[0025] This embodiment provides an auxiliary oil injection device for a transformer, such as Figure 1 As shown, it includes a transformer body 1, an oil filling port 2 is provided on the top of the transformer body 1, a flow guide cavity 3 is provided below the oil filling port 2, a flow guide component 4 is provided in the flow guide cavity 3, an oil pan 5 is provided at the bottom of the transformer body 1, an oil drain component 6 is provided on the oil pan 5, and a liquid level monitoring component 7 is provided in the transformer body 1.

[0026] As an implementation mode, a filter screen 8 is provided in the oil filling port 2 to filter the injected oil.

[0027] As an implementation method, Figure 2 As shown, an arc plate 31 is provided in the guide cavity 3 , and a drainage groove 32 is provided on the arc plate 31 , which can receive the impact of the injected oil and evenly disperse the oil in all directions through the drainage groove 32 .

[0028] As an embodiment, the guide assembly 4 includes a fixed bracket 41, a stepped guide plate 42 is fixed on the fixed bracket 41, a buffer groove 43 is provided on the stepped guide plate 42, and a guide pipe 44 is connected to the bottom of the buffer groove 43. The oil can be dispersed to the surroundings through the stepped guide plate 42 to avoid directly impacting one position. At the same time, the buffer groove 43 and the guide pipe 44 can reduce the flow rate of the oil and further play a buffering role.

[0029] As an implementation mode, a transparent observation window 51 is provided on the oil pan 5 to facilitate observation of whether there are impurities precipitated in the bottom oil.

[0030] As an embodiment, the oil drain assembly 6 includes a corrugated bottom plate 61, which is fixed to the bottom of the oil pan 5. An oil drain groove 62 is provided at the bottom of the corrugated bottom plate 61. A sealing strip 63 is provided on the outside of the oil drain groove 62. The sealing strip 63 is connected to the corrugated bottom plate 61 by a buckle 64. The corrugated bottom plate 61 can make impurities settle only at the bottom, so that they can be completely discharged through the oil drain groove 62, thereby avoiding adhesion to dead corners.

[0031] As an implementation mode, a sealing ring 65 is provided between the corrugated bottom plate 61 and the oil pan 5 to improve the sealing performance.

[0032] As an embodiment, the inner surface of the corrugated bottom plate 61 is coated with a drag-reducing coating to prevent the adhesion of impurities.

[0033] As an implementation mode, the liquid level monitoring assembly 7 includes a liquid level tube 71, the bottom of which is connected to the transformer body 1, and the outer sleeve of the liquid level tube 71 is provided with a photoelectric sensor 72, which is wirelessly connected to the monitoring terminal via a wireless signal transmitter 73. The photoelectric sensor 72 is used to monitor the liquid level in real time and send it remotely to the monitoring terminal, so as to facilitate timely knowledge of the liquid level situation.

[0034] The present invention provides an auxiliary oil filling device for a transformer. By arranging a guide component 4, the oil can be smoothly and evenly injected into the interior of the transformer body, thereby effectively avoiding the impact on the components inside the transformer body. At the same time, an oil drain component 6 is arranged at the bottom, which can clean up the impurities deposited at the bottom of the transformer, thereby ensuring the service life of the transformer. The entire device has a compact structure and will not affect the internal components, and there is no need to additionally expand the volume of the transformer.

[0035] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An auxiliary oil filling device for a transformer, comprising a transformer body (1), characterized in that: The top of the transformer body (1) is provided with an oil filling port (2), a flow guide cavity (3) is provided below the oil filling port (2), a flow guide component (4) is provided in the flow guide cavity (3), an oil pan (5) is provided at the bottom of the transformer body (1), an oil drain component (6) is provided on the oil pan (5), and a liquid level monitoring component (7) is provided in the transformer body (1).

2. The auxiliary oil injection device for transformer according to claim 1, characterized in that: A filter screen (8) is provided inside the oil filling port (2).

3. The auxiliary oil injection device for transformer according to claim 1, characterized in that: An arc-shaped plate (31) is provided in the flow-guiding cavity (3), and a flow-guiding groove (32) is provided on the arc-shaped plate (31).

4. The auxiliary oil injection device for transformer according to claim 1, characterized in that: The flow guide assembly (4) comprises a fixed bracket (41), a stepped flow guide plate (42) is fixed on the fixed bracket (41), a buffer groove (43) is provided on the stepped flow guide plate (42), and a flow guide pipe (44) is connected to the bottom of the buffer groove (43).

5. The auxiliary oil injection device for transformer according to claim 1, characterized in that: The oil pan (5) is provided with a transparent observation window (51).

6. The auxiliary oil injection device for transformer according to claim 1, characterized in that: The oil drain assembly (6) comprises a corrugated bottom plate (61), the corrugated bottom plate (61) being fixed to the bottom of the oil pan (5), an oil drain groove (62) being provided at the bottom of the corrugated bottom plate (61), a sealing strip (63) being provided outside the oil drain groove (62), and the sealing strip (63) being connected to the corrugated bottom plate (61) via a buckle (64).

7. The auxiliary oil injection device for transformer according to claim 6, characterized in that: A sealing ring (65) is provided between the corrugated bottom plate (61) and the oil pan (5).

8. The auxiliary oil injection device for transformer according to claim 6, characterized in that: The inner surface of the corrugated bottom plate (61) is coated with a resistance-reducing coating.

9. The auxiliary oil injection device for transformer according to claim 1, characterized in that: The liquid level monitoring component (7) comprises a liquid level tube (71), the bottom of which is in communication with the transformer body (1), a photoelectric sensor (72) is provided on the outside of the liquid level tube (71), and the photoelectric sensor (72) is wirelessly connected to a monitoring terminal via a wireless signal transmitter (73).

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