CN113345687B

CN113345687B - Vegetable oil transformer

Info

Publication number: CN113345687B
Application number: CN202110459933.7A
Authority: CN
Inventors: 何子健; 杨四化; 于茂雷
Original assignee: Zhongshao Electric Co ltd
Current assignee: Zhongshao Electric Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-07-15
Anticipated expiration: 2041-04-27
Also published as: CN113345687A

Abstract

The invention relates to the technical field of transformer equipment, in particular to a vegetable oil transformer.A raised oil injection groove surrounding the circumference is formed at the top of an oil tank body, and an openable outer layer movable sealing device is arranged at the top of the oil injection groove; install on the oil tank body and encircle the track of marcing of oiling groove at the inner circle, be equipped with the dolly of marcing on the track of marcing, the rotatable oil change of installing on the dolly of marcing is towards the brush pole, in the oiling groove is inserted to oil change towards brush pole one end, the other end intercommunication conservator. The invention has the beneficial effects that: the double-layer sealing structure can prevent the vegetable oil inside from contacting moisture and air, and the automatic oil changing mode can wash away the residual oil stain and oil residue at the dead angle inside the oil tank, thereby avoiding the influence of variable pressure caused by mixing new oil and old oil.

Description

Vegetable oil transformer

Technical Field

The invention relates to the technical field of transformer equipment, in particular to a vegetable oil transformer.

Background

At the end of the 19 th century, transformers began to use transformer oil as an insulating and cooling medium, and oil-immersed transformers emerged. The body (winding and iron core) of oil-immersed transformer is installed in oil tank filled with transformer oil, and the oil tank is welded by steel plate. The oil tank of the medium and small transformer consists of a tank shell and a tank cover, the transformer body is placed in the tank shell, and the tank cover is opened to lift the transformer body out for maintenance.

However, the popularization and application of the existing oil-immersed transformer are not high, and the reasons for the rapid development of the oil-immersed transformer are many, and one important defect is not improved all the time. After the oil immersed transformer is used for a long time, in order to ensure the stability of the oil immersed transformer, the oil immersed transformer needs to be changed, the oil needs to be supplemented from an oil conservator when the oil is changed, when the oil immersed transformer is changed, after the old oil is cleaned, the cavity of the transformer is flushed by the new oil until the oil is clean and has no impurities, the new oil can be added, because a plurality of oil stains are adhered to the inner wall of the cavity of the oil-immersed transformer when the old oil is used for a long time, the traditional top-down flushing mode that new oil is used and flows from the oil conservator to the inside of the oil-immersed transformer is formed, because the direction of the impact is fixed, the oil stain attached to the inner wall of the cavity of the oil-immersed transformer cannot be well washed clean, thereby leading to adding the greasy dirt that new oil mixes old oil in the oil feed formula transformer for the oil in the oil-immersed transformer is impure, has influenced the use of transformer. Because of the influence of oil quality, the inside oil of oil-immersed transformer oil tank can produce the dregs of fat through long-time use, also can produce the decomposition after the oil is used for a long time simultaneously, and it has become the dregs of fat to decompose some meeting precipitations in the oil tank bottom of hydrocarbons, and the existence of these dregs of fat can influence the normal use of transformer, along with the dregs of fat is more and more, and then influences oily formula vary voltage volume.

For this reason, this application has designed a vegetable oil transformer that can thoroughly carry out the oil change processing to solve above-mentioned problem.

Disclosure of Invention

The invention provides a vegetable oil transformer for making up the defects in the prior art.

The invention is realized by the following technical scheme:

the utility model provides a vegetable oil transformer, is including the oil tank body of parcel transformer part, its characterized in that:

the top of the oil tank body is provided with a raised oil filling groove which surrounds the circumference, and the top of the oil filling groove is provided with an outer movable sealing device which can be opened and closed; the oil tank body is provided with an advancing track surrounding the oil injection groove at the inner ring, the advancing track is provided with an advancing trolley, the advancing trolley is rotatably provided with an oil changing flushing rod, one end of the oil changing flushing rod is inserted into the oil injection groove, and the other end of the oil changing flushing rod is communicated with an oil conservator.

Furthermore, in order to better realize the invention, the oil tank body comprises a rectangular tank shell, radiating fins are arranged on the periphery of the tank shell, an oil drain valve connected with a PLC (programmable logic controller) is arranged on one side of the bottom of the tank shell, and a plurality of wave-making pumps are arranged at the position, far away from the oil drain valve, of the bottom inside the tank shell; the top shell of the oil tank body is in a concave and convex funnel shape, an openable and closable inner layer movable sealing device is installed at the bottom of the oil injection groove at the top, and the inner layer movable sealing device is connected through the PLC in a control mode.

Furthermore, in order to better realize the invention, the outer layer movable sealing device comprises a circle of electric push plates which are closely arranged around the oil filling groove, the electric push plates are connected with a plurality of proximity sensors which are arranged on the advancing track through wired or wireless communication, and the proximity sensors control the corresponding electric push plates to open and expose the oil filling groove after detecting the advancing trolley passing by the proximity sensors.

Furthermore, in order to better realize the invention, the travelling trolley is an active travelling device which is in communication connection with the PLC, one side of the trolley body of the travelling trolley is outwards connected with a reflector plate matched with the proximity sensor, the top of the trolley body is connected with a clamping plate facing the oil injection groove, a rotating motor is installed on the clamping plate and is connected with the PLC, and the clamping plate is vertically and rotatably connected with an oil changing flushing rod through a bearing.

Furthermore, in order to better realize the invention, the oil change flushing rod is a multi-section electric telescopic pipe connected with a PLC controller, a gear which is in meshing transmission connection with a rotating motor is arranged on a pipe body of the multi-section electric telescopic pipe above the clamping plate, a plurality of through holes are arranged on the pipe body of the multi-section electric telescopic pipe below the clamping plate and are used as flushing holes, the top of the multi-section electric telescopic pipe is connected with one end of a telescopic hose through a sliding ring, and the other end of the telescopic hose is connected with an oil outlet end of an oil conservator.

Furthermore, in order to better realize the invention, an oil pumping hole is formed on the vertical wall of the oil filling groove and is connected with an external oil pumping unit.

The specific oil changing method based on the vegetable oil transformer comprises the following steps:

s1, the PLC controls the traveling trolley to continuously travel on the traveling track;

s2, opening the corresponding electric push plate after the outer layer movable sealing device detects that the travelling trolley approaches through the proximity sensor to expose the oil injection groove, and simultaneously controlling the inner layer movable sealing device to open by the PLC;

s3, the PLC controls the multi-section electric extension tube to extend into the oil tank body, and after the multi-section electric extension tube extends to the longest length, the rotating motor is opened to drive the multi-section electric extension tube to rotate continuously;

s4, the PLC controls the oil drain valve and the wave making pump to be opened, the conservator is controlled to be opened after the oil is drained, new oil flows out of the multi-section electric extension pipe and washes away oil residues on the inner wall of the oil tank body and the dead angle of the transformer part, and the oil residues fall to the bottom and are discharged through the oil drain valve;

s5, after the travelling trolley completes two-cycle movement, the PLC controls the oil drain valve and the wave making pump to close first, after a set time, when vegetable oil overflows into the oil injection groove, the PLC controls the oil conservator to close, then controls the multi-section electric extension tube to stretch and separate from the oil injection groove, and finally controls the inner layer movable sealing device and the outer layer movable sealing device to be completely closed;

and S6, starting the external oil pumping unit, pumping out residual oil in the oil filling tank forming the closed space, and forming a vacuum environment in the oil filling tank.

The invention has the beneficial effects that:

the double-layer sealing structure can prevent the vegetable oil inside from contacting moisture and air, and the automatic oil changing mode can wash away the residual oil stain and oil residue at the dead angle inside the oil tank, thereby avoiding the influence of variable pressure caused by mixing new oil and old oil.

Drawings

FIG. 1 is a schematic perspective view of a vegetable oil transformer according to the present invention;

FIG. 2 is a schematic perspective view of an oil tank of the vegetable oil transformer of the present invention;

FIG. 3 is a schematic longitudinal sectional view of a tank body of the vegetable oil transformer of the present invention;

FIG. 4 is a diagram showing a positional relationship of a traveling rail part of the vegetable oil transformer according to the present invention;

FIG. 5 is a schematic structural view of an outer layer movable sealing device of the vegetable oil transformer of the present invention;

fig. 6 is a schematic perspective view of the traveling trolley and the oil change flushing rod of the vegetable oil transformer.

In the figure, the position of the upper end of the main shaft,

1. an oil tank body, 101, a tank body shell, 102, heat dissipation fins, 103, an oil drain valve, 104, an oil filling groove, 1041, an oil pumping hole, 105, an inner layer movable sealing device, 106, a wave-making pump,

2. the outer layer of the movable sealing device is provided with a sealing ring,

3. the travel track, 301, the proximity sensor,

4. a traveling trolley 401, a trolley body 402, a reflector panel 403, a clamping plate 404 and a rotating motor,

5. an oil changing flushing rod 501, a multi-section electric telescopic pipe 502, a gear 503, a flushing hole 504, a slip ring 505, a telescopic hose,

6. an oil conservator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be noted that the terms "disposed," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise specifically stated or limited. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 1-6 show an embodiment of the present invention, which is a vegetable oil transformer, comprising a tank body 1 for enclosing transformer components, a raised oil tank 104 surrounding the tank body 1, and an outer movable sealing device 2 on the top of the oil tank 104 for opening and closing; install on the oil tank body 1 and encircle oiling groove 104 track 3 of marcing at the inner circle, be equipped with the dolly 4 of marcing on the track 3 of marcing, the last rotatable oil change of installing of dolly 4 towards brushing rod 5, during oil change towards brushing rod 5 one end inserted oiling groove 104, the other end intercommunication conservator 6.

The oil tank body 1 comprises a rectangular tank body shell 101, heat dissipation fins 102 are arranged on the periphery of the tank body shell 101, an oil drain valve 103 connected with a PLC (programmable logic controller) is arranged on one side of the bottom of the tank body shell 101, and a plurality of wave-making pumps 106 are arranged at positions, far away from the oil drain valve 103, of the bottom inside the tank body shell 101 and used for flushing oil residues under flushing to the position near the oil drain valve 103; the top casing of oil tank body 1 is the funnel shape of indent evagination, the inside of bubble entering oil tank body 1 in the oil filler tank 104 can be avoided in the shape design of so, also can be at the in-process of oiling, make inside bubble rise to oil filler tank 104 department and discharge, but open closed inlayer movable sealing device 105 is installed to the bottom of oil filler tank 104 at top, inlayer movable sealing device 105 passes through PLC controller control connection, the design here can further carry out sealed processing, prevent the entering of outside steam air.

In this embodiment, the outer movable sealing device 2 includes an electric push plate closely arranged around the oil filling tank 104, the electric push plate is connected with a plurality of proximity sensors 301 arranged on the advancing track 3 through wired or wireless communication, and the proximity sensors 301 control the corresponding electric push plate to open and expose the oil filling tank 104 after detecting the advancing trolley 4 passing through the proximity sensors 301. The electric push plate is tightly attached above the oil filling groove 104 after being stretched out, so that external water vapor and air are prevented from entering.

The travelling trolley 4 is an active travelling device connected with the PLC for communication, one side of a trolley body 401 of the travelling trolley 4 is outwards connected with a reflector 402 matched with the proximity sensor 301, the top of the trolley body 401 is connected with a clamping plate 403 facing the oil filling groove 104, a rotating motor 404 is installed on the clamping plate 403, the rotating motor 404 is connected with the PLC, and the clamping plate 403 is vertically rotated through a bearing to be connected with an oil changing flushing rod 5. When the travelling trolley 4 passes by each proximity sensor 301, the proximity sensors 301 control the corresponding electric push plates to open, so that the oil change flushing rod 5 clamped by the travelling trolley 4 can enter conveniently.

The oil change flushing rod 5 is a multi-section electric telescopic pipe 501 connected with a PLC controller, a gear 502 which is in meshing transmission connection with a rotating motor 404 is arranged on a pipe body of the multi-section electric telescopic pipe 501 above a clamping plate 403, a plurality of through holes which are used as flushing holes 503 are formed in the pipe body of the multi-section electric telescopic pipe 501 below the clamping plate 403, the top of the multi-section electric telescopic pipe 501 is connected with one end of a telescopic hose 505 through a sliding ring 504, the sliding ring 504 facilitates rotation of the multi-section electric telescopic pipe 501, the telescopic hose 505 facilitates advancing of the multi-section electric telescopic pipe 501 in an oil filling groove 104, and the other end of the telescopic hose 505 is connected with an oil outlet end of an oil conservator 6.

In addition, an oil pumping hole is formed on the vertical wall of the oil column groove 104, and the oil pumping hole is connected with an external oil pumping unit. After oil change is completed, vegetable oil can remain in the oil tank 104, the residual oil can be pumped out through the design, secondary pollution is avoided, in addition, the oil tank 104 can form a vacuum isolation belt through further air pumping, and sealing is further enhanced.

The specific oil change method of this example is:

firstly, a PLC controller controls a traveling trolley 4 to continuously travel on a traveling track 3;

secondly, after the outer layer movable sealing device 2 detects that the travelling trolley 4 approaches through the proximity sensor 301, a corresponding electric push plate is opened to expose the oil injection groove 104, and meanwhile, the PLC controls the inner layer movable sealing device 105 to be opened;

thirdly, the PLC controller controls the multi-section electric extension tube 501 to extend into the oil tank body 1, and after the multi-section electric extension tube is extended to the longest length, the rotating motor 404 is turned on to drive the multi-section electric extension tube 501 to rotate continuously;

fourthly, the PLC controls the oil drain valve 103 and the wave making pump 106 to be opened, the conservator 6 is controlled to be opened after the oil is drained, the new oil flows out from the multi-section electric extension pipe 501 and washes away oil residues on the inner wall of the oil tank body 1 and the dead angle position of the transformer part, and the oil residues fall to the bottom and are discharged through the oil drain valve 103;

fifthly, after the traveling trolley 4 completes two-cycle movement, the PLC controls the oil drain valve 103 and the wave making pump 106 to be closed firstly, after a set time, when vegetable oil overflows into the oil filling groove 104, the oil conservator 6 is controlled to be closed, then the multi-section electric extension pipe 501 is controlled to be extended and retracted to be separated from the oil filling groove 104, and finally the inner movable sealing device 105 and the outer movable sealing device 2 are controlled to be completely closed;

and sixthly, starting the external pumping unit, pumping residual oil in the oil filling groove 104 forming the closed space, and forming a vacuum environment in the oil filling groove.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent substitutions made by the technical solutions of the present invention by the persons skilled in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a vegetable oil transformer, includes the oil tank body (1) of parcel transformer part, its characterized in that:

the top of the oil tank body (1) is provided with a raised oil filling groove (104) which surrounds the circumference, and the top of the oil filling groove (104) is provided with an outer layer movable sealing device (2) which can be opened and closed; an advancing track (3) surrounding an oil filling groove (104) and arranged at the inner ring is arranged on the oil tank body (1), and an advancing trolley (4) is arranged on the advancing track (3);

the outer layer movable sealing device (2) comprises a circle of electric push plates which are closely arranged around the oil filling groove (104), the electric push plates are connected with a plurality of proximity sensors (301) which are arranged on the advancing track (3) through wired or wireless communication, and the proximity sensors (301) control the corresponding electric push plates to open and expose the oil filling groove (104) after detecting the advancing trolley (4) which passes through the proximity sensors;

an oil changing flushing rod (5) is rotatably arranged on the travelling trolley (4), one end of the oil changing flushing rod (5) is inserted into the oil filling groove (104), and the other end of the oil changing flushing rod is communicated with the oil conservator (6);

the travelling trolley (4) is an active travelling device which is in communication connection with a PLC (programmable logic controller), one side of a trolley body (401) of the travelling trolley (4) is outwards connected with a reflecting plate (402) matched with a proximity sensor (301), the top of the trolley body (401) is connected with a clamping plate (403) facing an oil injection groove (104), a rotating motor (404) is installed on the clamping plate (403), the rotating motor (404) is connected with the PLC, and an oil changing flushing rod (5) is vertically and rotatably connected onto the clamping plate (403) through a bearing;

oil change flushing rod (5) are multisection electric telescopic pipe (501) for connecting the PLC controller, the pipe body that multisection electric telescopic pipe (501) is located clamping plate (403) top is equipped with gear (502) that the meshing transmission connects rotating electrical machines (404), the pipe body that multisection electric telescopic pipe (501) is located clamping plate (403) below is opened has a plurality of through-holes as erodeing hole (503), the top of multisection electric telescopic pipe (501) is through sliding ring (504) connection telescopic hose (505) one end, the other end of telescopic hose (505) is connected the oil outlet end of conservator (6).

2. The vegetable oil transformer of claim 1, wherein:

the oil tank body (1) comprises a rectangular tank body shell (101), heat dissipation fins (102) are arranged on the periphery of the tank body shell (101), an oil drain valve (103) connected with a PLC (programmable logic controller) is arranged on one side of the bottom of the tank body shell (101), and a plurality of wave making pumps (106) are arranged at the position, far away from the oil drain valve (103), of the bottom of the interior of the tank body shell (101);

the top casing of the oil tank body (1) is of an inwards concave outwards convex funnel shape, an openable and closable inner layer movable sealing device (105) is installed at the bottom of the oil filling groove (104) at the top, and the inner layer movable sealing device (105) is connected through a PLC controller in a control mode.

3. The vegetable oil transformer of claim 1, wherein:

an oil pumping hole (1041) is formed in the vertical wall of the oil filling groove (104), and the oil pumping hole (1041) is connected with an external oil pumping unit.

4. An oil change method based on the vegetable oil transformer of any one of claims 1 to 3, characterized by comprising the following steps:

s1, the PLC controls the traveling trolley (4) to continuously travel on the traveling track (3);

s2, the outer layer movable sealing device (2) opens the corresponding electric push plate after detecting the approach of the traveling trolley (4) through the approach sensor (301) to expose the oil filling groove (104), and the PLC controller controls the inner layer movable sealing device (105) to open;

s3, the PLC controls the multi-section electric telescopic pipe (501) to extend into the oil tank body (1), and after the multi-section electric telescopic pipe extends to the longest length, the rotating motor (404) is opened to drive the multi-section electric telescopic pipe (501) to rotate continuously;

s4, the PLC controls the oil drain valve (103) and the wave-making pump (106) to open, the conservator (6) is controlled to open after oil is drained, new oil flows out of the multi-section electric telescopic pipe (501) and flushes oil residues on the inner wall of the oil tank body (1) and the dead angle of the transformer part, and the oil residues fall to the bottom and are discharged through the oil drain valve (103);

s5, after the traveling trolley (4) completes two-cycle movement, the PLC controls the oil drain valve (103) and the wave making pump (106) to be closed firstly, after a set time, when vegetable oil overflows into the oil filling groove (104), the oil conservator (6) is controlled to be closed, then the multi-section electric extension tube (501) is controlled to be extended and retracted to be separated from the oil filling groove (104), and finally the inner movable sealing device (105) and the outer movable sealing device (2) are controlled to be completely closed;

and S6, starting the external oil pumping unit, pumping out residual oil in the oil filling groove (104) forming the closed space, and forming a vacuum environment in the oil filling groove.