Exhaust device of transformer oil conservator

Abstract

The utility model discloses an exhaust device of a transformer oil conservator, which comprises an oil conservator body, the upper surface of the oil conservator body is provided with an exhaust mechanism, the exhaust mechanism comprises a manual exhaust mechanism and an automatic exhaust mechanism, the automatic exhaust mechanism comprises a shell, the upper end of the shell is provided with a cover body, and the upper end of the cover body is provided with an air inlet. A filtering unit, an exhaust unit and a sealing unit are arranged in the shell. According to the exhaust device of the transformer oil conservator, the filtering unit, the exhaust unit and the sealing unit in the automatic exhaust mechanism are matched with one another, so that air in the transformer oil conservator is automatically exhausted, and oil of the transformer can be prevented from overflowing when the device breaks down.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil conservator technical field especially is related to a kind of exhaust device of transformer oil conservator. BACKGROUND

[0002] Transformer oil conservator is used to connect with transformer to carry out oil compensation to transformer and is used to store oil equipment, and capsule type oil conservator is one of the common types in transformer oil conservator. Capsule type oil conservator is placed with a capsule full of gas in the cabinet, and the capsule expands or shrinks accordingly with the increase or decrease of transformer oil volume, which is the key to maintaining the pressure balance in the cabinet. However, if there is a gap between the outer wall of the capsule and the shell of the oil conservator, air can enter, which will cause false oil level, i.e. the oil level display no longer truly reflects the actual situation of transformer oil. In addition, due to the large expansion coefficient of air, it will change significantly in volume with the change of environmental temperature, which further increases the error of the oil level meter. SUMMARY

[0003] The utility model aims at providing a kind of exhaust device of transformer oil conservator, the mutual cooperation of filter unit, exhaust unit, closed unit in the automatic exhaust mechanism, realize the automatic discharge of air in transformer oil conservator, and transformer oil can be prevented from overflowing when the device fails.

[0004] To achieve the above-mentioned purpose, the utility model provides an exhaust device of transformer oil conservator, which comprises an oil conservator body, an exhaust mechanism is arranged on the upper surface of the oil conservator body, the exhaust mechanism comprises a manual exhaust mechanism and an automatic exhaust mechanism, the automatic exhaust mechanism comprises a shell, a cover is arranged on the upper end of the shell, and a filter unit, an exhaust unit and a closed unit are arranged inside the shell.

[0005] Preferably, the filter unit is arranged at the bottom end of the shell, the filter unit comprises a connecting piece and a filter screen, the connecting piece is fixedly connected to the inner surface of the shell, and the filter screen is arranged inside the central through hole of the connecting piece.

[0006] Preferably, the exhaust unit is arranged above the filter unit, the exhaust unit comprises a lifting module, an air passage module and a floating ball, the air passage module comprises a gas-permeable membrane and a support, the support comprises a first circular ring, a second circular ring and a connecting plate, the first circular ring is arranged at the center of the second circular ring, the connecting plate is circularly connected through the first circular ring and the second circular ring, the gas-permeable membrane is arranged between the first circular ring and the second circular ring and between the second circular ring and the inner surface of the shell, and the outer surface of the floating ball is attached to the inner surface of the first circular ring.

[0007] Preferably, the lifting module corresponds to the connecting plate, the lifting module comprises a first limiting block, a second limiting block and a lifting shaft, the first limiting block and the second limiting block are vertically arranged on the inner surface of the shell, the upper end of the lifting shaft is fixedly connected with the first limiting block, and the lower end of the lifting shaft is fixedly connected with the second limiting block.

[0008] Preferably, the lower end of the connecting plate is provided with a lifting shaft sleeve, the inner surface of the shell is provided with a groove corresponding to the lifting shaft sleeve, the outer surface of the lifting shaft sleeve is tightly fitted in the groove, and the lifting shaft is arranged in the central through hole of the lifting shaft sleeve.

[0009] Preferably, the lower surface of the first limiting block and the upper surface of the second limiting block are both provided with a rubber damping layer.

[0010] Preferably, the closing unit comprises a first motor, a linkage shaft, a closing plate and a closing funnel, the first motor is arranged on the outer surface of the upper end of the shell, the linkage shaft penetrates the shell and is connected with the output end of the first motor, the closing plate is a circular plate, the linkage shaft is fixedly connected with the closing plate in a penetrating mode, the linkage shaft is provided with a linkage shaft sleeve at the lower end, and the linkage shaft sleeve is embedded in the inner surface of the shell.

[0011] Preferably, the closing funnel is arranged between the floating ball and the closing plate, the upper end of the closing funnel is fixedly connected with the inner surface of the shell, and the diameter of the lower end opening of the closing funnel corresponds to the floating ball.

[0012] Preferably, the inner part of the cover is provided with a breathable waterproof layer, and the breathable waterproof layer is used for preventing rainwater or other liquids from entering the inner part of the shell.

[0013] Therefore, the exhaust device of the transformer oil conservator adopts the above-mentioned automatic exhaust mechanism, the internal filter unit, the exhaust unit and the closing unit are matched with each other, the automatic exhaust of air in the transformer oil conservator is realized, and the transformer oil can be prevented from overflowing when the device fails.

[0014] The technical scheme of the utility model is further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the oil conservator body structure schematic view of the exhaust device of the transformer oil conservator embodiment of the utility model;

[0016] Figure 2 is the automatic exhaust mechanism structure schematic view of the exhaust device of the transformer oil conservator embodiment of the utility model;

[0017] Figure 3is a sectional view of an automatic exhaust mechanism of an embodiment of the exhaust device of the transformer oil conservator of the utility model,

[0018] Figure 4 is an exhaust unit structure schematic diagram of an embodiment of the exhaust device of the transformer oil conservator of the utility model,

[0019] Figure 5 is an embodiment of the exhaust device of the transformer oil conservator of the utility model, Figure 4 the enlarged view at A in the middle,

[0020] Figure 6 is an embodiment of the exhaust device of the transformer oil conservator of the utility model, Figure 4 the enlarged view at B in the middle,

[0021] Reference signs

[0022] 1, oil conservator body;2, exhaust mechanism;3, manual exhaust mechanism;4, automatic exhaust mechanism;5, first circular ring;6, second circular ring;7, connecting plate;8, lifting shaft sleeve;9, groove;10, rubber damping layer;41, shell;42, cover;43, filter unit;44, exhaust unit;45, closed unit;431, connecting piece;432, filter screen;441, lifting module;442, ventilation module;443, floating ball;451, first motor;452, linkage shaft;453, closing plate;454, closed hopper;455, linkage shaft sleeve;4411, first limit block;4412, second limit block;4413, lifting shaft;4421, breathable film;4422, support. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is further described below with reference to the drawings and embodiments.

[0024] Unless otherwise defined, technical terms or scientific terms used in the utility model should be understood as the usual meaning understood by a person with ordinary skills in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which may change accordingly when the absolute position of the described object changes.

[0025] As Figures 1 to 3As shown, an exhaust device of a transformer oil conservator, including an oil conservator body 1, the upper surface of the oil conservator body 1 is provided with an exhaust mechanism 2, the exhaust mechanism 2 includes a manual exhaust mechanism 3 and an automatic exhaust mechanism 4, the automatic exhaust mechanism 4 includes a shell 41, the upper end of the shell 41 is provided with a cover 42, the inside of the shell 41 is provided with a filter unit 43, an exhaust unit 44 and a sealing unit 45. The inside of the cover 42 is provided with a breathable waterproof layer, which is used to prevent rainwater or other liquids from entering the inside of the shell 41.

[0026] The filter unit 43 is arranged at the bottom end of the shell 41, and the filter unit 43 includes a connecting piece 431 and a filter screen 432, the connecting piece 431 is fixedly connected with the inner surface of the shell 41, and the filter screen 432 is arranged inside the central through hole of the connecting piece 431. The filter screen 432 is used to prevent impurities inside the oil tank from entering the inside of the device and causing damage to the internal elements of the device.

[0027] As shown in the figure, Figures 4 to 6 The exhaust unit 44 is arranged above the filter unit 43, and the exhaust unit 44 includes a lifting module 441, an air passage module 442 and a floating ball 443. The air passage module 442 includes a breathable film 4421 and a support 4422. The support 4422 includes a first circular ring 5, a second circular ring 6 and a connecting plate 7. The first circular ring 5 is arranged at the center of the second circular ring 6. The connecting plate 7 is circularly arranged and penetrates through the first circular ring 5 and the second circular ring 6. The breathable film 4421 is arranged between the first circular ring 5 and the second circular ring 6, and between the second circular ring 6 and the inner surface of the shell 41. The breathable film 4421 is made of polytetrafluoroethylene or ePTFE material, which can prevent transformer oil from passing through and has good air permeability. The outer surface of the floating ball 443 is attached to the inner surface of the first circular ring 5, preventing the floating ball 443 from shaking.

[0028] The lifting module 441 corresponds to the connecting plate 7, and the lifting module 441 includes a first limiting block 4411, a second limiting block 4412 and a lifting shaft 4413. The first limiting block 4411 and the second limiting block 4412 are vertically arranged on the inner surface of the shell 41. The upper end of the lifting shaft 4413 is fixedly connected with the first limiting block 4411, and the lower end of the lifting shaft 4413 is fixedly connected with the second limiting block 4412. The end of the connecting plate 7 is provided with a lifting shaft sleeve 8, and the inner surface of the shell 41 is provided with a groove 9 corresponding to the lifting shaft sleeve 8. The outer surface of the lifting shaft sleeve 8 is tightly attached to the inside of the groove 9, and the lifting shaft 4413 is arranged in the central through hole of the lifting shaft sleeve 8. The lower surface of the first limiting block 4411 and the upper surface of the second limiting block 4412 are both provided with a rubber damping layer 10. The rubber damping layer 10 is used to buffer the impact of the lifting shaft sleeve 8 on the first limiting block 4411 and the second limiting block 4412, and to increase the service life of the lifting mechanism.

[0029] The closing unit 45 comprises a first motor 451, a linkage shaft 452, a closing plate 453 and a closing funnel 454, the first motor 451 is arranged on the outer surface of the upper end of the shell 41, the linkage shaft 452 penetrates the shell 41 and is connected with the output end of the first motor 451, the closing plate 453 is a circular plate, the linkage shaft 452 is fixedly connected with the closing plate 453 in a penetrating mode, the linkage shaft 452 is provided with a linkage shaft sleeve 455 at the end, and the linkage shaft sleeve 455 is embedded in the inner surface of the shell 41. The closing funnel 454 is arranged between the floating ball 443 and the closing plate 453, the upper end of the closing funnel 454 is fixedly connected with the inner surface of the shell 41 in an open mode, and the diameter of the lower end opening of the closing funnel 454 corresponds to the floating ball 443. The inner side of the lower end opening of the closing funnel 454 is provided with an infrared induction device, when the exhaust device fails, the transformer oil in the transformer oil conservator enters the device, the infrared induction device sends a signal to the first motor 451, the output end of the first motor 451 rotates, the closing plate 453 rotates, and the overflow of the transformer oil in the device is prevented.

[0030] Working principle: when the transformer oil conservator contains air, the air passes through the filtering unit 43, the exhaust unit 44 and the closing unit 45 in sequence, and is finally discharged to the outside through the waterproof exhaust layer in the cover 42, when the air in the transformer oil conservator is reduced, the oil surface rises, the transformer oil enters the device through the filtering unit 43, the oil surface rises, the supporting piece 4422 and the air permeable film 4421 rise under the action of the surface tension and buoyancy of the oil surface, cooperate with the lifting module 441 to rise, and the floating ball 443 rises, and finally the floating ball 443 is embedded in the inner side of the lower end opening of the closing funnel 454, so that the transformer oil is prevented from seeping out of the exhaust device.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can still be modified or replaced by the equivalent, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. An exhaust device for a transformer oil conservator characterized by: Including oil tank body, the upper surface of the oil tank body is provided with an exhaust mechanism, the exhaust mechanism includes a manual exhaust mechanism and an automatic exhaust mechanism, the automatic exhaust mechanism includes a shell, the upper end of the shell is provided with a cover, the inside of the shell is provided with a filter unit, an exhaust unit and a sealing unit.

2. An exhaust device for a transformer oil conservator according to claim 1, characterized in that: The filter unit is arranged at the bottom end of the shell, and the filter unit includes a connecting piece and a filter screen, the connecting piece is fixedly connected with the inner surface of the shell, and the filter screen is arranged in the central through hole of the connecting piece.

3. An exhaust device for a transformer oil conservator according to claim 2, characterised in that: The exhaust unit is arranged above the filter unit, and the exhaust unit includes a lifting module, an air passage module and a floating ball, the air passage module includes a breathable film and a support, the support includes a first circular ring, a second circular ring and a connecting plate, the first circular ring is arranged at the center of the second circular ring, the connecting plate is circularly connected with the first circular ring and the second circular ring, the breathable film is arranged between the first circular ring and the second circular ring and between the second circular ring and the inner surface of the shell, and the outer surface of the floating ball is attached to the inner side surface of the first circular ring.

4. An exhaust device for a transformer oil conservator according to claim 3, characterized in that: The lifting module corresponds to the connecting plate, and the lifting module includes a first limiting block, a second limiting block and a lifting shaft, the first limiting block and the second limiting block are vertically arranged on the inner surface of the shell, the upper end of the lifting shaft is fixedly connected with the first limiting block, and the lower end of the lifting shaft is fixedly connected with the second limiting block.

5. An exhaust device for a transformer oil conservator according to claim 4, characterised in that: The connecting plate is provided with a lifting shaft sleeve at the end, the inner surface of the shell is provided with a groove corresponding to the lifting shaft sleeve, the outer surface of the lifting shaft sleeve is tightly attached to the inside of the groove, and the lifting shaft is arranged in the central through hole of the lifting shaft sleeve.

6. An exhaust device for a transformer oil conservator according to claim 5, characterised in that: The lower surface of the first limiting block and the upper surface of the second limiting block are both provided with a rubber damping layer.

7. An exhaust device for a transformer oil conservator according to claim 6, characterised in that: The sealing unit includes a first motor, a linkage shaft, a sealing plate and a sealing funnel, the first motor is arranged on the outer surface of the upper end of the shell, the linkage shaft penetrates the shell and is connected with the output end of the first motor, the sealing plate is a circular plate, the linkage shaft is fixedly connected with the sealing plate in a penetrating manner, the linkage shaft is provided with a linkage shaft sleeve at the end, and the linkage shaft sleeve is embedded in the inner surface of the shell.

8. An exhaust device for a transformer oil conservator according to claim 7, characterised in that: The sealing funnel is arranged between the floating ball and the sealing plate, the upper end opening of the sealing funnel is fixedly connected with the inner surface of the shell, and the diameter of the lower end opening of the sealing funnel corresponds to the floating ball.

9. An exhaust device for a transformer oil conservator according to claim 8, characterised in that: The inside of the cover is provided with a breathable waterproof layer, which is used to prevent rainwater or other liquids from entering the inside of the shell.

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