阅读说明：本技术 一种智能油浸变压器补油装置 (Intelligent oil supplementing device for oil immersed transformer ) 是由 崔荣华 赵永林 潘宝珠 李红兵 于 2021-06-29 设计创作，主要内容包括：本发明涉及一种智能油浸变压器补油装置,包括储油罐和控油罐,控油罐与变压器之间布设排气管和输油管,且输油管靠近控油罐罐底；还包括控油器,其包括浮杆,浮杆的底端垂直安装在浮子表面,浮杆的顶端穿过控油罐盖伸入储油罐内；浮杆的顶端安装浮杆顶,储油罐盖底面中心安装油位下限架,浮杆的顶端穿设油位下限架,浮杆顶置于油位下限架与储油罐盖形成的空腔内；浮杆与控油罐盖接触处设置密封结构,浮杆进行移动,密封结构实现储油罐与控油罐的连通或断开,同时随着浮杆移动,浮杆顶与油位下限架接触时发生警报；本发明实现对变压器的自动补油操作,同时在变压器发生异常情况时发出警示。(The invention relates to an intelligent oil-immersed transformer oil supplementing device, which comprises an oil storage tank and an oil control tank, wherein an exhaust pipe and an oil conveying pipe are arranged between the oil control tank and a transformer, and the oil conveying pipe is close to the bottom of the oil control tank; the oil control device also comprises an oil controller which comprises a floating rod, wherein the bottom end of the floating rod is vertically arranged on the surface of the floater, and the top end of the floating rod penetrates through the oil control tank cover and extends into the oil storage tank; the top end of the floating rod is provided with a floating rod top, the center of the bottom surface of the oil storage tank cover is provided with an oil level lower limit frame, the top end of the floating rod penetrates through the oil level lower limit frame, and the floating rod is arranged in a cavity formed by the oil level lower limit frame and the oil storage tank cover; a sealing structure is arranged at the contact position of the floating rod and the oil control tank cover, the floating rod moves, the sealing structure realizes the connection or disconnection of the oil storage tank and the oil control tank, and simultaneously, along with the movement of the floating rod, an alarm is given when the top of the floating rod is in contact with the oil level lower limit frame; the invention realizes the automatic oil supplementing operation of the transformer and simultaneously gives out a warning when the transformer is in an abnormal condition.)

1. The utility model provides an intelligence oil immersed transformer mends oily device which characterized in that: the oil-control tank comprises an oil storage tank (6) and an oil-control tank (7), wherein an oil-control tank cover (3) covers the tank opening of the oil-control tank (7), the bottom of the oil storage tank (6) is fixedly arranged on the surface of the oil-control tank cover (3), and an oil-storage tank cover (5) covers the tank opening of the oil storage tank (6); an exhaust pipe (9) and an oil delivery pipe (8) are arranged between the oil control tank (7) and the transformer (1), and the oil delivery pipe (8) is close to the bottom of the oil control tank (7);

the oil control device also comprises an oil controller (4) which comprises a floating rod (43), wherein the bottom end of the floating rod (43) is vertically arranged on the surface of the floater (41), and the top end of the floating rod (43) penetrates through the oil control tank cover (3) and extends into the oil storage tank (6);

the top end of the floating rod (43) is provided with a floating rod top (44), the center of the bottom surface of the oil storage tank cover (5) is provided with an oil level lower limit frame (51), the top end of the floating rod (43) penetrates through the oil level lower limit frame (51), and the floating rod top (44) is arranged in a cavity formed by the oil level lower limit frame (51) and the oil storage tank cover (5);

a sealing structure is arranged at the contact position of the floating rod (43) and the oil control tank cover (3), the floating rod (43) moves, the oil storage tank (6) and the oil control tank (7) are communicated or disconnected through the sealing structure, and meanwhile, along with the movement of the floating rod (43), an alarm occurs when the floating rod top (44) is in contact with the oil level lower limit frame (51).

2. The method of claim 1, wherein: an oil supplementing hole (31) is formed in the oil control tank cover (3), the oil supplementing hole (31) comprises a safety plug hole, an upper plug hole and a bottom plug hole which are sequentially communicated, the safety plug hole is located on the surface of the oil control tank cover (3), and the hole diameters of the safety plug hole, the upper plug hole and the bottom plug hole are sequentially enlarged;

the sealing structure comprises an oil plug (42), the sealing structure comprises a safety plug (423), an upper plug (422) and a bottom plug (421), the safety plug (423), the upper plug (422) and the bottom plug (421) are sequentially sleeved on a floating rod (43), the diameters of the safety plug (423), the upper plug (422) and the bottom plug (421) are gradually increased, when the oil plug (42) is embedded into the oil supplementing hole (31), the upper plug (422) is matched with the upper plug hole, the bottom plug (421) is matched with the bottom plug hole, and a gap is formed between the safety plug (423) and the safety plug hole.

3. The intelligent oil immersed transformer oil supplementing device according to claim 2, wherein: the oil control tank cover is characterized in that a limiting frame (32) is fixedly installed at the center of the bottom surface of the oil control tank cover (3), a limiting hole is formed in the limiting frame (32), a floating rod (43) penetrates through the limiting hole, and an oil plug (42) moves in a cavity formed by the limiting frame (32) and the oil control tank cover (3) along with the movement of the floating rod (43).

4. The intelligent oil immersed transformer oil supplementing device according to claim 1, wherein: the cavity of the oil level lower limit frame (51) is arranged in a conical structure, and the conical top of the conical structure faces the bottom of the oil storage tank (6);

the floating rod top (44) is of a conical structure, the conical top of the floating rod top (44) also faces the bottom of the oil storage tank (6), and the floating rod top (44) and the cavity of the oil level lower limit frame (51) are arranged in a matched mode.

5. The intelligent oil immersed transformer oil supplementing device according to claim 4, wherein: two electrodes are arranged at the cavity cone top of the oil level lower limit frame (51), a lead is embedded in the cone top of the floating rod top (44), and when the floating rod top (44) is in contact with the oil level lower limit frame (51), the two electrodes are communicated with an alarm through the lead to send out an oil supplement alarm.

6. The intelligent oil immersed transformer oil supplementing device according to claim 4, wherein: two electrodes are distributed on the bottom surface of the oil storage tank cover (5), a lead is embedded in the conical bottom of the floating rod top (44), and when the floating rod top (44) is in contact with the oil storage tank cover (5), the two electrodes are communicated with an alarm through the lead to send out an oil control abnormal alarm.

7. The intelligent oil immersed transformer oil supplementing device according to claim 1, wherein: an exhaust outer hole (34) is formed in the circumferential wall of the oil control tank cover (3), an exhaust inner hole (33) is formed in the bottom surface of the oil control tank cover (3), and the exhaust outer hole (34) is communicated with the exhaust inner hole (33).

8. The intelligent oil immersed transformer oil supplementing device according to claim 1, wherein: the oil storage tank cover (5) is provided with a through oil filling hole (52).

9. The intelligent oil immersed transformer oil supplementing device according to claim 1, wherein: an observation window is arranged on the tank body of the oil storage tank (6) and used for observing the oil level in the oil storage tank (6).

Technical Field

The invention relates to an intelligent oil filling device for an oil immersed transformer, and belongs to the field of transformers.

Background

In the practical process, a transformer oil supplementing device is developed, such as application No. 201410724926.5, and comprises an oil tank, wherein an inner gear pump is installed in the oil tank, an oil inlet of the inner gear pump is positioned at the bottom of the oil tank, an oil outlet of the inner gear pump is communicated with one end of an oil pipe, the other end of the oil pipe extends out of the oil tank, a driving shaft of the inner gear pump is in transmission connection with one end of a transmission connecting rod, and the other end of the transmission connecting rod extends out of the oil tank and is connected with a crank, so that the inner gear pump can be driven by rotating the crank; although the transformer oil supplementing device is convenient to use, intelligent oil supplementing operation cannot be achieved.

Therefore, there is a need to develop an oil supplementing device suitable for an oil immersed transformer, which can realize unattended automatic oil level control of the oil immersed transformer, and is better if an alarm can be automatically prompted when an oil shortage or other abnormality is found.

Disclosure of Invention

The invention provides an intelligent oil-immersed transformer oil supplementing device, which realizes automatic oil supplementing operation of a transformer and gives out a warning when the transformer is in an abnormal condition.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an intelligent oil-immersed transformer oil supplementing device comprises an oil storage tank and an oil control tank, wherein an oil control tank cover covers the opening of the oil control tank, the bottom of the oil storage tank is fixedly arranged on the surface of the oil control tank cover, and the oil storage tank cover covers the opening of the oil storage tank; an exhaust pipe and an oil delivery pipe are arranged between the oil control tank and the transformer, and the oil delivery pipe is close to the bottom of the oil control tank;

the oil control device also comprises an oil controller which comprises a floating rod, wherein the bottom end of the floating rod is vertically arranged on the surface of the floater, and the top end of the floating rod penetrates through the oil control tank cover and extends into the oil storage tank;

the top end of the floating rod is provided with a floating rod top, the center of the bottom surface of the oil storage tank cover is provided with an oil level lower limit frame, the top end of the floating rod penetrates through the oil level lower limit frame, and the floating rod is arranged in a cavity formed by the oil level lower limit frame and the oil storage tank cover;

a sealing structure is arranged at the contact position of the floating rod and the oil control tank cover, the floating rod moves, the sealing structure realizes the connection or disconnection of the oil storage tank and the oil control tank, and simultaneously, along with the movement of the floating rod, an alarm is given when the top of the floating rod is in contact with the oil level lower limit frame;

as a further preferred aspect of the present invention, an oil supply hole is formed in the oil control tank cover, the oil supply hole includes a safety plug hole, an upper plug hole and a bottom plug hole which are sequentially communicated, the safety plug hole is located on the surface of the oil control tank cover, and the hole diameters of the safety plug hole, the upper plug hole and the bottom plug hole are sequentially enlarged;

the sealing structure comprises an oil plug, the oil plug comprises a safety plug, an upper plug and a bottom plug which are sequentially sleeved on the floating rod, the diameters of the safety plug, the upper plug and the bottom plug are gradually increased, when the oil plug is embedded into the oil supplementing hole, the upper plug is matched with the upper plug hole, the bottom plug is matched with the bottom plug hole, and a gap is reserved between the safety plug and the safety plug hole;

as a further preferred aspect of the invention, a limiting frame is fixedly mounted at the center of the bottom surface of the oil control tank cover, a limiting hole is formed in the limiting frame, the floating rod penetrates through the limiting hole, and the oil plug moves in a cavity formed by the limiting frame and the oil control tank cover along with the movement of the floating rod;

as a further preferable mode of the invention, the cavity of the oil level lower limit frame is arranged in a conical structure, and the conical top of the conical structure faces the bottom of the oil storage tank;

the top of the floating rod is of a conical structure, the conical top of the floating rod also faces the bottom of the oil storage tank, and the top of the floating rod is matched with the cavity of the oil level lower limit frame;

as a further preferred aspect of the invention, two electrodes are installed at the cavity cone top of the oil level lower limit frame, a lead is embedded in the cone top of the floating rod top, and when the floating rod top is in contact with the oil level lower limit frame, the two electrodes are communicated with the alarm through the lead to send out an oil supplement alarm;

as a further optimization of the invention, two electrodes are distributed on the bottom surface of the oil storage tank cover, a lead is embedded in the conical bottom of the top of the floating rod, and when the top of the floating rod is contacted with the oil storage tank cover, the two electrodes are communicated with the alarm through the lead to send out an oil control abnormal alarm;

as a further preferred aspect of the present invention, an exhaust outer hole is formed on the circumferential wall of the oil control tank cover, an exhaust inner hole is formed on the bottom surface of the oil control tank cover, and the exhaust outer hole is communicated with the exhaust inner hole;

as a further preferable aspect of the present invention, a through oil hole is provided in the oil storage tank cover;

as a further preferred aspect of the present invention, an observation window is provided in the oil storage tank body for observing the oil level in the oil storage tank.

Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the effect of the communicating vessel is realized by using the oil conveying pipe and the exhaust pipe which are arranged between the oil control tank and the transformer, and the on-off of the oil supplementing hole of the oil control tank cover is controlled by the change of the oil level of the transformer in the oil control tank, so that the purpose of regulating the oil level of the transformer in the transformer is achieved;

2. the electrodes are arranged on the contact part of the oil level lower limit frame and the floating rod top and the contact part of the oil storage tank cover and the floating rod top and are communicated with the matching alarm through the electrodes, so that the oil shortage or oil control abnormal information is alarmed in real time.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of a preferred embodiment provided by the present invention;

FIG. 2 is a schematic view of the internal structure of an oil control tank according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the bottom of a preferred embodiment of the oil control tank lid provided in accordance with the present invention;

FIG. 4 is a schematic diagram of an oil control device according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view of the preferred embodiment of the present invention showing the connection of the oil control device to the cover of the oil storage tank;

FIG. 6 is a schematic diagram of the connection of an oil control device and an oil control tank cover according to a preferred embodiment of the present invention;

fig. 7 is a schematic structural diagram of the oil plug and the oil filling hole in the preferred embodiment of the invention after being matched.

In the figure: 1 is the transformer, 2 is the oil supplementing device body, 3 is the oil control cover, 31 is the oil supplementing hole, 32 is the spacing, 33 is the exhaust hole, 34 is the exhaust outer bore, 4 is the oil controller, 41 is the float, 42 is the oil plug, 421 is the bottom stopper, 422 is the upper stopper, 423 is the safety plug, 43 is the floating rod, 44 is the floating rod top, 5 is the oil storage tank cover, 51 is the oil level lower limit frame, 52 is the oil filler point, 6 is the oil storage tank, 7 is the oil control jar, 8 is defeated oil pipe, 9 is the blast pipe.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of 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 that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

Based on can't accomplish intelligence oil supplementing operation about the transformer among the prior art, this application provides an intelligence oil-immersed transformer oil supplementing device, when realizing automatic oil supplementing, can send real-time alarm to lack oil or accuse oily unusual information.

FIG. 1 is an overall structure of an embodiment provided by the present application, an oil compensating device body 2 is an oil storage tank 6 and an oil control tank 7 in the figure, an oil control tank cover 3 covers an opening of the oil control tank, a bottom of the oil storage tank is fixedly mounted on a surface of the oil control tank cover, and an oil storage tank cover 5 covers the opening of the oil storage tank; an exhaust pipe 9 and an oil delivery pipe 8 are arranged between the oil control tank and the transformer 1, and the oil delivery pipe is positioned below the exhaust pipe in order to use the communicating vessel principle conveniently.

The structure for realizing the oil control purpose of the present application is an oil controller 4, which has a structure shown in fig. 4, and comprises a floating rod 43, the bottom end of the floating rod is vertically arranged on the surface of a float 41, the top end of the floating rod is provided with a floating rod top 44, when the oil storage tank is matched with an oil control tank for use, as shown in figure 2, the top end of the floating rod penetrates through the oil control tank cover and extends into the oil storage tank, the oil level lower limit frame 51 is installed at the center of the bottom surface of the oil storage tank cover, the top end of the floating rod penetrates through the oil level lower limit frame, the floating rod is arranged in a cavity formed by the oil level lower limit frame and the oil storage tank cover in an overhead mode, a sealing structure is arranged at the contact part of the floating rod and the oil control tank cover (here, an oil supplementing hole 31 formed in the oil control tank cover), and the oil control tank cover is based on a communicating vessel principle, the float is used for receiving buoyancy force, the change of the oil level of the transformer in the oil control tank is used for controlling the on-off of the oil supplementing hole of the oil control tank cover, the oil control tank is connected with the transformer through the exhaust pipe, and the purpose of adjusting the oil level of the transformer in the transformer is achieved by utilizing the communicating vessel principle.

The oil level of the transformer oil in the transformer is adjusted through the oil controller, but when the oil in the transformer is more or less, the oil level can not be found by an operator in time, and in order to ensure that the operator can find abnormality in real time, the oil level lower limit frame and other structures are processed, as shown in fig. 5, a cavity of the oil level lower limit frame is arranged in a conical structure, and the conical top of the conical structure faces to the bottom of the oil storage tank; the top of the floating rod is of a conical structure, the conical top of the floating rod also faces the bottom of the oil storage tank, and the top of the floating rod is matched with the cavity of the oil level lower limit frame; two electrodes are arranged at the conical top of a cavity of the oil level lower limit frame, a lead is embedded in the conical top of the floating rod top, the two electrodes are arranged for alarming when the oil level of the transformer oil in the transformer is lower than a critical value, and particularly, when the floating rod top is contacted with the oil level lower limit frame, the two electrodes are communicated with an alarm through the lead to send out an oil supplement alarm; two electrodes are arranged on the bottom surface of the oil storage tank cover, a lead is embedded at the conical bottom of the top of the floating rod, the two electrodes are arranged to give an alarm when transformer oil in the transformer is abnormal, and specifically, when the top of the floating rod is in contact with the oil storage tank cover, the two electrodes are communicated with the alarm through the lead to give an oil supplementing alarm. In the above mentioned, the contact position of the float rod and the oil control tank cover is provided with a sealing structure, as shown in fig. 6, the center of the oil control tank cover is provided with an oil supplementing hole, and the sealing structure in the oil supplementing hole is an oil plug 42, in order to ensure the sealing performance, the present application provides a preferred structure here, as can be seen in fig. 7, the oil supplementing hole comprises a safety plug hole, an upper plug hole and a bottom plug hole which are sequentially communicated, the safety plug hole is positioned on the surface of the oil control tank cover, and the aperture of the safety plug hole, the upper plug hole and the bottom plug hole is sequentially enlarged; the oil plug comprises a safety plug 423, an upper plug 422 and a bottom plug 421 (fig. 4 shows a schematic diagram after related sleeving is provided) which are sequentially sleeved on the floating rod, the diameters of the safety plug, the upper plug and the bottom plug are gradually increased, when the oil plug is embedded into the oil supplementing hole, the upper plug is matched with the upper plug hole, the bottom plug is matched with the bottom plug hole, and a gap is formed between the safety plug and the safety plug hole. Here, the upper plug and the bottom plug are used as sealing structures to seal the first layer of the oil supplementing hole, at this time, fig. 7 shows that a gap exists between the safety plug and the safety plug hole, and when the upper plug and the bottom plug fail, the safety plug is plugged into the safety plug hole, so that the sealing structure seals the second layer of the oil supplementing hole.

As shown in fig. 6, a limiting frame 32 is fixedly installed at the center of the bottom surface of the oil control tank cover, a limiting hole is formed in the limiting frame, the floating rod penetrates through the limiting hole, and the oil plug moves in a cavity formed by the limiting frame and the oil control tank cover along with the movement of the floating rod, so that the oil plug is limited.

As the oil level of the transformer oil in the transformer is changed all the time, the air pressure in the oil control tank is driven to be unstable, so that an outer exhaust hole 34 is formed in the circumferential wall of the oil control tank cover, an inner exhaust hole 33 is formed in the bottom surface of the oil control tank cover, and the outer exhaust hole is communicated with the inner exhaust hole, so that the air pressure in the oil control tank is balanced.

An oil storage tank cover 5 covers the tank opening of the oil storage tank, and a through oil filling hole 52 (marked in figure 5) is formed in the oil storage tank cover, so that oil can be timely supplemented to the oil storage tank; in order to assist in observing the conditions in the oil storage tank, an observation window is arranged on the oil storage tank body and used for observing the oil level in the oil storage tank.

Based on the oil supplementing device, the application also provides a related oil supplementing method, and the method specifically comprises the following conditions that when transformer oil is stored in the oil storage tank, the transformer oil in the transformer is sufficient, the oil level of the transformer oil in the oil control tank is far away from a supercritical line, the volume of a floater immersed in the transformer oil is large, the buoyancy force borne by the floater is larger than the gravity of the oil controller and the pressure of the transformer oil in the oil storage tank on an oil plug, the floating rod moves towards the direction of the oil storage tank, the oil plug is plugged into the oil supplementing hole, the upper plug seals the upper plug hole, the bottom plug seals the bottom plug hole, the transformer oil in the oil storage tank does not continuously flow into the oil control tank, and the oil level of the transformer oil in the oil control tank is kept unchanged.

When transformer oil is stored in the oil storage tank, the transformer oil in the transformer is gradually reduced, the oil level of the transformer oil in the oil control tank is close to a critical line, the volume of a floater immersed in the transformer oil is gradually reduced, the buoyancy force borne by the floater is smaller than the gravity of an oil controller and the pressure of the transformer oil in the oil storage tank on an oil plug, a floating rod moves towards the bottom of the oil supplementing tank, the oil plug is far away from an oil supplementing hole, and the transformer oil in the oil storage tank flows into the oil control tank and then is supplemented into the transformer through an oil delivery pipe;

the oil level of the transformer oil in the oil control tank rises, the position of a floating rod of the oil controller moves upwards, the oil plug is plugged into the oil supplementing hole, the oil controller does not move upwards any more, if a small amount of transformer oil flows into the oil control tank, the volume of the floater of the oil controller immersed in the transformer oil is increased, the oil plug continues to plug the oil supplementing hole, and the transformer oil in the transformer returns to a sufficient state.

When transformer oil is not stored in the oil storage tank and is reduced, the oil level of the transformer in the oil control tank is reduced, the floating rod of the oil controller moves towards the bottom of the oil control tank until the top of the floating rod is contacted with the oil level lower limit frame, the two electrodes positioned on the oil level lower limit frame are communicated with the alarm, and the alarm is triggered to send an oil supplement warning.

The sealing structure is double sealing, because if the transformer oil contains particle impurities, the oil plug and the oil supplementing hole cannot be attached and sealed, when one of the upper plug and the bottom plug of the oil plug fails to seal, the other plug continues to seal the oil supplementing hole, and the oil storage tank and the oil control tank are disconnected;

when the equal sealing failure of upper plug and bottom stopper of oil stopper, transformer oil continues to flow into in the accuse oil jar in the oil storage tank, transformer oil level constantly rises in the accuse oil jar, the volume constantly increases in the float submergence transformer oil, the float bar continues to remove to the oil storage tank direction, the bottom stopper, the upper plug takes place to warp in the oil supplementing hole, in insurance stopper embedding insurance stopcock, the float bar top contacts with the oil storage tank lid this moment, two electrodes that are located oil storage tank lid bottom surface form the intercommunication with the alarm, touch the alarm and send and need accuse oil warning, remind the user to clear up granule impurity.

To sum up, the oil supplementing device that this application provided can realize unattended automatic control oil-immersed transformer's oil level under the prerequisite that the structure is comparatively simple, manufacturing cost reduces, if when discovering its lack of oil or other unusual, can the automatic suggestion report to the police.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as used herein is intended to include both the individual components or both.

The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.