An auxiliary oiling device for a transformer

Abstract

The application provides an auxiliary oil injection device of a transformer, which comprises a transformer body, an oil injection port is arranged at the top of the transformer body, a flow guide cavity is arranged below the oil injection port, a flow guide assembly is arranged in the flow guide cavity, an oil pan is arranged at the bottom of the transformer body, an oil discharge assembly is arranged on the oil pan, and a liquid level monitoring assembly is arranged in the transformer body; the flow guide assembly is arranged to inject oil into the transformer body gently and uniformly, so that the impact on the elements in the transformer body is effectively avoided; the oil discharge assembly arranged at the bottom can clean the impurities deposited at the bottom of the transformer, so that the service life of the transformer is ensured; the whole device has a compact structure and does not affect the internal elements, and the volume of the transformer does not need to be additionally enlarged.

Description

Technical Field

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

[0002] Transformers are basic equipment for power transmission and distribution, and are widely used in industries such as industry, agriculture, transportation, and urban communities. They are devices that use the principle of electromagnetic induction to change AC voltage. Their main components are primary coils, secondary coils, and iron cores (magnetic cores). Their main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization (magnetic saturation transformers).

[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 high flow rate during oil filling can easily 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. The top of the transformer body is provided with an oil filling port, and the auxiliary oil filling device includes a diverter box and a control box. The diverter box is fixedly installed at the bottom of the oil filling port and is connected to the oil filling port. Several diverter pipes are connected to the bottom of the diverter box, and the other ends of the diverter pipes are all set downward and are all set close to the bottom surface of the transformer body. A guide rod is vertically fixedly installed at the bottom of the diverter box, and a float-type liquid level sensor is installed on the guide rod. The diverter 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 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, an oil filling port being provided on the top of the transformer body, a flow guide cavity being provided below the oil filling port, a flow guide assembly being provided in the flow guide cavity, an oil pan being provided at the bottom of the transformer body, an oil drain assembly being provided on the oil pan, and a liquid level monitoring assembly being 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 guide assembly includes a fixed bracket, a stepped guide plate is fixed on the fixed bracket, a buffer groove is provided on the stepped guide plate, and a 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 includes a corrugated bottom plate, which is fixed to the bottom of the oil pan. An oil drainage groove is provided at the bottom of the corrugated bottom plate, and a sealing strip is provided on the outside of the oil drainage groove. The sealing strip is connected to the corrugated bottom plate by a snap 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 base plate is coated with a drag-reducing coating.

[0015] Preferably, the liquid level monitoring assembly includes a liquid level tube, the bottom of which is connected to the transformer body, and a photoelectric sensor is provided on the outside of the liquid level tube, which 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 being provided at the top of the transformer body, a flow guide cavity being provided below the oil filling port, a flow guide component being provided in the flow guide cavity, an oil pan being provided at the bottom of the transformer body, an oil drain component being provided on the oil pan, and a liquid level monitoring component being 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 within the transformer body; and at the same time, the oil drain component is provided at the bottom, which can clean impurities deposited at the bottom of the transformer, thereby ensuring the service life of the transformer; the entire device has a compact structure, will not affect internal components, and does not require additional expansion of the transformer volume. 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 following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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] Example 1:

[0025] This embodiment provides an auxiliary oil filling 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 diversion cavity 3 is provided below the oil filling port 2, a diversion component 4 is provided in the diversion 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 embodiment, 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-shaped plate 31 is provided in the guide cavity 3 , and a drainage groove 32 is provided on the arc-shaped 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 the bottom of the buffer groove 43 is connected to a guide pipe 44. The oil can be dispersed to the surroundings through the stepped guide plate 42 to avoid direct impact on one position. At the same time, the buffer groove 43 and the guide pipe 44 can reduce the oil flow rate and further play a buffering role.

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

[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, and 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 through a buckle 64. The corrugated bottom plate 61 can make impurities settle only at the bottom, so that they can be discharged completely through the oil drain groove 62, thereby avoiding adhesion to dead corners.

[0031] As an embodiment, 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 resistance-reducing coating to prevent the adhesion of impurities.

[0033] As an embodiment, the liquid level monitoring component 7 includes a liquid level tube 71, the bottom of the liquid level tube 71 is connected to the transformer body 1, and the outer sleeve of the liquid level tube 71 is provided with a photoelectric sensor 72. The photoelectric sensor 72 is wirelessly connected to the monitoring terminal through 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 providing a guide component 4, the oil can be injected smoothly and evenly 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 drainage component 6 is provided at the bottom to clean up 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 intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents 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 assembly (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 assembly (6) is provided on the oil pan (5), and a liquid level monitoring assembly (7) is provided in the transformer body (1); An arc-shaped plate (31) is provided in the guide cavity (3), the arc-shaped plate (31) is located at the lower end of the oil filling port (2), and a drainage groove (32) is provided on the arc-shaped plate (31); The guide assembly (4) includes a fixed bracket (41), a stepped guide plate (42) is fixed on the fixed bracket (41), the stepped guide plate (42) is a structure with a high middle portion and low sides, and the highest end corresponds to the arc-shaped plate (31), 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 drain assembly (6) comprises a corrugated bottom plate (61), the corrugated bottom plate (61) being fixed to the bottom of the oil pan (5), a plurality of oil drain grooves (62) being provided at the bottom of the corrugated bottom plate (61), a sealing strip (63) being provided outside the oil drain grooves (62), and the sealing strip (63) being connected to the corrugated bottom plate (61) via a buckle (64); A sealing ring (65) is provided between the corrugated bottom plate (61) and the oil pan (5); The inner surface of the corrugated bottom plate (61) is coated with a resistance-reducing coating; A filter screen (8) is provided in the oil filling port (2); A transparent observation window (51) is provided on the oil pan (5).

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

Images