Power transformer with magnetic shielding

Abstract

The utility model relates to transformer technical field especially relates to a power transformer with magnetic shielding, including the shell, the top of shell is fixed with the cover, the bottom of cover is fixed with a plurality of groups of core column, the outside of a plurality of groups of core column is equipped with the shield plate, the shield plate is installed in the shell, the one side of shell bottom is equipped with the oil content display component of accurate oil injection, the both sides wall of shell all are fixed with the radiating fin, the other side wall of shell is equipped with the water spraying assembly of cooling and dust removal to radiating fin, the oil content display component includes the inner tube of installation in the shell bottom one side, this power transformer with magnetic shielding can improve the oil injection oil content accuracy, avoid the problem that too much or too little is injected, and rainwater is sprayed to the radiating fin place through the water pump, and the rainwater can directly evaporate and absorb heat with the radiating fin contact, thereby reach the purpose of quick cooling, can also take away the dust attached in the radiating fin simultaneously, has the effect of cooling and dust removal.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, concretely is a kind of power transformer with magnetic shielding. BACKGROUND

[0002] Power transformer is a kind of key equipment in power system, and its main function is to realize the rise and fall of voltage through electromagnetic induction principle, to optimize the transmission and distribution of power. When the existing power transformer is filled with oil through oil injection hole, it is difficult to visually measure the oil injection amount inside the shell during oil injection due to the small oil injection hole, and there may be too much or too little oil injection. When too much, it is easy to cause waste of cooling oil, and when too little, it is easy to affect the normal operation of the transformer, increase the risk of overheating, aging and other faults. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a power transformer with magnetic shielding, which solves the technical problem that the existing power transformer cannot accurately control the oil injection amount.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a power transformer with magnetic shielding, comprising a shell, a cover is fixedly arranged on the top of the shell, a plurality of core columns are fixedly arranged on the bottom of the cover, a shielding plate is arranged on the outer side of the plurality of core columns, the shielding plate is installed in the shell, an oil amount display assembly capable of accurately injecting oil is installed on one side of the bottom of the shell, heat dissipation fins are fixedly arranged on the two side walls of the shell, and a water spraying assembly for cooling and dust removal of the heat dissipation fins is installed on the other side wall of the shell.

[0005] The oil amount display assembly comprises an inner cylinder installed on one side of the bottom of the shell, the inside of the inner cylinder is communicated with the inside of the shell, a piston is movably arranged in the inside of the inner cylinder, the piston is fixedly connected to one end of a guide rod, a spring is sleeved on the outer wall of the guide rod in the inside of the inner cylinder, a pointer is fixedly arranged on the other end of the guide rod, a scale plate is arranged above the pointer, the scale plate is fixedly connected to the inside of an outer cylinder, and the outer cylinder is fixedly connected to the outer side of the inner cylinder.

[0006] Preferably, two groups of symmetrical steel frames are installed on the bottom of the shell.

[0007] Preferably, the shielding plate is in a "concave" shape, and a through hole is arranged on the inner wall of the shielding plate.

[0008] Preferably, the water spraying assembly comprises a water tank installed on the other side wall of the shell, the top of the water tank is communicated with the bottom of two water tanks through two connecting pipes, the two water tanks are installed on the two sides of the top of the cover, water pumps are installed on the two sides of the bottom of the water tank, one end of the water pump is connected with a water spraying pipe, a plurality of spray heads are arranged on the other end of the water spraying pipe and above the heat dissipation fins.

[0009] Preferably, the top of the cover is provided with an arc-shaped protective plate through a plurality of supporting columns, and two ends of the protective plate are above the two water tanks, respectively.

[0010] Preferably, the cover is provided with an oil injection port, and one side of the bottom of the shell is provided with an oil discharge pipe with a valve.

[0011] By the above technical scheme, the utility model provides a power transformer with magnetic shielding, at least has following beneficial effect:

[0012] 1、 the power transformer with magnetic shielding, through setting oil display component, when injecting oil, along with oil quantity change more, under the action of oil pressure makes piston move, at this time guide post will drive pointer to move, through observing the corresponding position of pointer and scale board, can know the oil level inside the shell, can improve the oil quantity accuracy when injecting oil, avoids the problem of injecting too much or too little.

[0013] 2、 the power transformer with magnetic shielding, through setting water spraying assembly, collects rainwater into water tank, then sprays rainwater to radiating fin through water pump, rainwater and radiating fin contact can evaporate and absorb heat directly, thereby reaches the purpose of quick cooling, and also can take away the dust attached in radiating fin, has the effect of cooling and dust removal. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the utility model, constitute a part of this application:

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model as a whole;

[0016] Figure 2 It is the structure schematic diagram of the shell and the cover outside of the utility model;

[0017] Figure 3 It is the structure schematic diagram of the shell and the cover of the utility model after splitting;

[0018] Figure 4 It is the structure schematic diagram of the shielding plate of the utility model;

[0019] Figure 5 It is the structure schematic diagram of the utility model Figure 2 A place of the utility model is enlarged;

[0020] REFERENCE SIGNS:

[0021] 1, steel frame; 2, shell; 3, cover; 4, core column; 5, shielding plate; 501, through hole; 6, oil display assembly; 601, inner cylinder; 602, piston; 603, guide column; 604, spring; 605, pointer; 606, scale plate; 607, outer cylinder; 7, heat dissipation fin; 8, water spraying assembly; 801, water tank; 802, connecting pipe; 803, water tank; 804, water pump; 805, water spraying pipe; 9, support; 10, guard plate; 11, oil drain pipe; 12, oil filling port. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in 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 fall within the scope of protection of the utility model.

[0023] With the growth of global power demand and the development of renewable energy, power transformers play an important role in the power system. Transformers are not only used for high-voltage power transmission between power plants and substations to reduce energy loss, but also play a key role in distributing power from the power transmission network to user terminals. The working principle of power transformers is based on Faraday's law of electromagnetic induction. The principle of the transformer is to generate a magnetic field by passing alternating current through the primary winding, and to induce current in the secondary winding through the transformer core, thereby realizing the transformation of voltage. By reasonably designing the ratio of the number of turns of the primary and secondary windings, the voltage can be raised or lowered.

[0024] Embodiment I:

[0025] Based on the technical defects that the prior art cannot accurately control the oil injection amount, please refer to Figures 1-5 The utility model provides a kind of power transformer with magnetic shielding, by observing the corresponding position of pointer 605 and scale plate 606, oil level inside shell 2 can be known, oil quantity accuracy when injecting can be improved, the problem that too much or too little is avoided, the power transformer includes shell 2, the top of shell 2 is fixed with cover 3, the bottom of cover 3 is fixed with multiple core columns 4, the outer side of multiple core columns 4 is equipped with shielding plate 5, shielding plate 5 is installed in shell 2, the bottom of shell 2 one side is equipped with the oil display assembly 6 that can be accurately injected, both side walls of shell 2 are fixed with heat dissipation fin 7, the other side wall of shell 2 is equipped with the water spraying assembly 8 that is cooled to heat dissipation fin 7 and dust removal;Cooling oil is injected into shell 2 through oil filling port 12, then under the action of oil display assembly 6, oil level can be displayed in real time, then under the action of water spraying assembly 8, rainwater can be collected and the heat dissipation efficiency of shell 2 can be improved by rainwater.

[0026] For the convenience and accurate control of the oil injection amount, please refer to Figure 5 , the oil amount display assembly 6 comprises an inner cylinder 601 mounted on one side of the bottom of the shell 2, the inside of the inner cylinder 601 is in communication with the inside of the shell 2, a piston 602 is movably arranged in the inside of the inner cylinder 601, the piston 602 is fixedly connected to one end of a guide rod, a spring 604 is sleeved on the outer wall of the guide rod in the inside of the inner cylinder 601, a pointer 605 is fixedly arranged on the other end of the guide rod, a scale plate 606 is arranged above the pointer 605, the scale plate 606 is fixedly connected to an outer cylinder 607, and the outer cylinder 607 is fixedly connected to the outside of the inner cylinder 601; when the shell 2 is filled with oil, the oil pressure on the piston 602 will gradually increase with the increase of the oil amount, at this time, the piston 602 will be pushed to move, the guide column 603 will be driven to move by the piston 602, and the pointer 605 will be driven to move by the guide column 603, so that the oil level in the shell 2 can be known by observing the corresponding position of the pointer 605 and the scale plate 606.

[0027] In order to solve the problem of overall installation, two groups of symmetrical steel frames 1 are arranged on the bottom of the shell 2; the overall can be supported and fixed through the steel frames 1.

[0028] In order to solve the problem of magnetic shielding, the shielding plate 5 is specifically a "concave" structure, and a through hole 501 is arranged on the inner wall of the shielding plate 5; the design of the "concave" structure can separate each core column 4 from each other, that is, the problem of external magnetic shielding can be solved, and the problem of interference between the core columns 4 can be avoided, and the through hole 501 can facilitate the passage of the wire.

[0029] In order to facilitate the injection or discharge of cooling oil, an oil injection port 12 is arranged on the cover 3, and a valve-equipped oil discharge pipe 11 is arranged on one side of the bottom of the shell 2.

[0030] Example two:

[0031] In actual use, only the heat dissipation fins 7 on the shell 2 are relied on for heat dissipation, and the heat dissipation effect is poor, so that the inside is still in a high temperature state, in order to improve the heat dissipation effect, please refer to Figure 1 , the water spraying assembly 8 comprises a water tank 801 mounted on the other side wall of the shell 2, the top of the water tank 801 is in communication with the bottom of two water troughs 803 through two connecting pipes 802, the two water troughs 803 are respectively arranged on the two sides of the top of the cover 3, water pumps 804 are arranged on the two sides of the bottom of the water tank 801, the water pumps 804 are connected with one end of water spraying pipes 805, and a plurality of spray heads are arranged on the other end of the water spraying pipes 805 and above the heat dissipation fins 7; rainwater is collected in the water tank 801, and then the rainwater is sprayed to the heat dissipation fins 7 through the water pumps 804, the rainwater in contact with the heat dissipation fins 7 can evaporate and absorb heat directly, so that the purpose of rapid cooling is achieved, and the dust attached to the heat dissipation fins 7 can also be taken away, which has the effect of cooling and dust removal.

[0032] In order to realize the collection of rainwater and the protection of the joint, an arc-shaped protective plate 10 is installed on the top of the cover 3 through a plurality of supporting columns, and the two ends of the protective plate 10 are above the two water tanks 803 respectively; since the protective plate 10 is arc-shaped, rainwater can flow to the two water tanks 803 on both sides along the protective plate 10 to realize the collection of rainwater, and meanwhile, the protective plate 10 is above the cover 3, so that the joint on the cover 3 can be protected to avoid the problem that the joint is rusted due to the contact of rainwater.

[0033] Through the above embodiment, it can be known that the cooling oil is injected into the shell 2 through the oil injection port 12, and then under the action of the oil amount display assembly 6, as the oil amount increases, the oil pressure on the piston 602 will also gradually increase, at this time, the piston 602 will be pushed to move, the piston 602 drives the guide column 603 to move, and the guide column 603 drives the pointer 605 to move, so that the oil level in the shell 2 can be known by observing the corresponding position of the pointer 605 and the scale plate 606, and the oil level can be displayed in real time, then under the action of the water spraying assembly 8, since the protective plate 10 is arc-shaped, rainwater can flow to the two water tanks 803 on both sides along the protective plate 10 to realize the collection of rainwater, and after the rainwater is collected into the water tank 801, the rainwater is sprayed to the heat dissipation fins 7 through the water pump 804, the rainwater in contact with the heat dissipation fins 7 can be directly evaporated and absorbed, so that the purpose of rapid cooling is achieved, and at the same time, the dust attached to the heat dissipation fins 7 can be taken away, so that the effect of cooling and dust removal is achieved.

[0034] It should be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A power transformer with magnetic shielding, comprising a housing (2), characterized in that: The top of the shell (2) is fixed with a cover (3), the bottom of the cover (3) is fixed with a plurality of core columns (4), the outer side of the plurality of core columns (4) is provided with a shielding plate (5), the shielding plate (5) is installed in the shell (2), one side of the bottom of the shell (2) is provided with an oil display assembly (6) which can accurately inject oil, the both side walls of the shell (2) are fixed with radiating fins (7), the other side wall of the shell (2) is provided with a water spraying assembly (8) which cools and removes dust for the radiating fins (7). The oil display assembly (6) comprises an inner cylinder (601) installed on one side of the bottom of the shell (2), the inside of the inner cylinder (601) is communicated with the inside of the shell (2), a piston (602) is movably arranged in the inside of the inner cylinder (601), the piston (602) is fixedly connected to one end of a guide rod, a spring (604) is sleeved on the outer wall of the guide rod in the inside of the inner cylinder (601), a pointer (605) is fixedly arranged on the other end of the guide rod, a scale plate (606) is arranged above the pointer (605), the scale plate (606) is fixedly connected to an outer cylinder (607), and the outer cylinder (607) is fixedly connected to the outer side of the inner cylinder (601).

2. The power transformer with magnetic shielding according to claim 1, characterized in that: The bottom of the shell (2) is provided with two groups of symmetrically arranged steel frames (1).

3. The power transformer with magnetic shielding according to claim 1, characterized in that: The shielding plate (5) is a concave structure, and the inner wall of the shielding plate (5) is provided with a through hole (501).

4. The power transformer with magnetic shielding according to claim 1, characterized in that: The water spraying assembly (8) comprises a water tank (801) installed on the other side wall of the shell (2), the top of the water tank (801) is communicated with the bottom of two water grooves (803) through two connecting pipes (802), the two water grooves (803) are respectively installed on the both sides of the top of the cover (3), the both sides of the bottom of the water tank (801) are provided with water pumps (804), the water pumps (804) are connected with one end of water spraying pipes (805), the other end of the water spraying pipes (805) is provided with a plurality of spray heads and is above the radiating fins (7).

5. The power transformer with magnetic shielding according to claim 4, characterized in that: The top of the cover (3) is provided with an arc-shaped protective plate (10) through a plurality of supporting columns, and the both ends of the protective plate (10) are respectively above the two water grooves (803).

6. The power transformer with magnetic shielding according to claim 1, characterized in that: The cover (3) is provided with an oil inlet (12), and one side of the bottom of the shell (2) is provided with a valve-equipped oil drain pipe (11).

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