Visual oil conservator and oil-immersed transformer

Abstract

The utility model relates to the technical field of transformer oil conservators, in particular to a visual oil conservator and an oil-immersed transformer, the visual oil conservator comprises a main body, a capsule, an exhaust assembly, a floating ball type liquid level meter, an installation assembly and a plurality of observation windows, the capsule and the floating ball type liquid level meter are arranged in the main body, and the installation assembly is arranged in the main body. The top of the capsule is communicated with the outside of the main body through the exhaust assembly, the observation windows are arranged on the periphery of the main body through the mounting assembly, the mounting assembly comprises a base, a fixing cover and a sealing piece, the base is fixedly connected with the main body, the fixing cover is arranged on the side, away from the main body, of the base at intervals and detachably connected with the base, and the sealing piece is arranged on the fixing cover. The observation window is arranged between the base and the fixing cover, and the sealing piece is arranged on the periphery of the observation window. The oil conservator aims to solve the problem that an existing oil conservator cannot directly observe the internal oil level height and the working state of a capsule.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer oil conservator technical field, specifically, relate to a kind of visual oil conservator and oil-immersed transformer. BACKGROUND

[0002] In hydropower station, oil-immersed transformer is usually equipped with air bag type fully enclosed oil conservator, which is designed to provide temperature compensation space for transformer oil and ensure effective isolation of transformer oil to prevent the intrusion of external contaminants. The basic structure of the oil conservator is a closed cylinder at both ends, which can withstand vacuum pressure to ensure stable oil level of the transformer under various operating conditions.

[0003] At present, the traditional air bag type fully enclosed oil conservator, due to the full-closed structure of the oil conservator, the actual state of the oil level gauge float ball mechanism inside the oil conservator cannot be directly observed by the operator, which makes it difficult to accurately assess the internal condition during oil injection, oil discharge or vacuum extraction; On the other hand, during the oil treatment process, the state of the capsule cannot be accurately observed, if the capsule cannot be fully expanded, it will cause the capsule to fold or be squeezed with the sharp part of the oil level gauge float ball mechanism base, eventually causing the capsule to be damaged or the oil level indication to be inaccurate. SUMMARY

[0004] The utility model aims at providing a kind of visual oil conservator and oil-immersed transformer to solve the problem that the existing oil conservator in the background art cannot directly observe the internal oil level height and the working state of the capsule.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of visual oil conservator in the first aspect of technical scheme, including main part, capsule, exhaust component, float ball type liquid level meter, installation component and several observation windows, the capsule and float ball type liquid level meter are arranged inside the main part, the top of the capsule is communicated with the outside of the main part through the exhaust component, several observation windows are arranged around the main part through the installation component, the installation component includes base, fixed cover and sealing element, the base is fixedly connected between the main part, the fixed cover is arranged on the side away from the main part of the base and is detachably connected between the base, the observation window is arranged between the base and the fixed cover, and the sealing element is arranged around the observation window.

[0006] Further, the top of the main part is provided with an exhaust port, the exhaust port is provided with an exhaust plug, and the exhaust plug is detachably connected with the exhaust port.

[0007] Further, the base and the fixed cover are connected by bolts, and the side of the base away from the fixed cover is welded with the main part.

[0008] Further, the exhaust assembly comprises a flange, a first pipe and a second pipe, the flange is arranged on the top of the main body and communicates with the inside of the capsule, the first pipe and the second pipe are arranged on the flange, the first pipe is provided with a first valve, and the second pipe is provided with a second valve.

[0009] Further, the bottom of the main body is further provided with a base and an oil filling port, the float ball type liquid level meter is installed on the base, the float ball type liquid level meter is used for detecting the oil level in the main body, and the oil filling port is arranged between the base.

[0010] Further, the sealing element is made of polytetrafluoroethylene material.

[0011] Further, the first side and the second side of the main body are symmetrically provided with manholes, and the manholes are respectively provided with first observation windows.

[0012] Further, the third side and the fourth side of the main body are symmetrically provided with a plurality of second observation windows, and the plurality of second observation windows are arranged at intervals.

[0013] Further, the fifth side and the sixth side of the main body are symmetrically provided with a plurality of third observation windows, and the plurality of third observation windows are arranged at intervals.

[0014] The second aspect of the utility model provides a kind of oil-immersed transformer, the oil-immersed transformer includes the visual oil tank of the first aspect of the utility model technical solution, and the oil-immersed transformer is communicated between the visual oil tank by pipeline.

[0015] The utility model has the beneficial effects of including:

[0016] 1. The visual oil tank and oil-immersed transformer provided by the utility model, wherein the visual oil tank is provided with observation windows around the main body by the mounting assembly, when the main body is filled with insulating oil, the capsule floats on the surface of the insulating oil and floats up and down with the float ball type liquid level meter, so that when the main body is subjected to operations such as oil injection, oil discharge and vacuum extraction, the oil level in the main body can be directly observed, and the working state of the capsule and the float ball type liquid level meter in the main body can be observed from different angles through the observation windows, so that problems such as non-expansion of the capsule, damage of the capsule or jamming of the float ball type liquid level meter can be avoided; on the other hand, the observation windows are installed by the mounting assembly, so that a stable mounting structure is provided, the mounting assembly facilitates maintenance and replacement of the observation windows, the base and the fixing cover provide a stable support structure, so that the observation windows can stably work under various conditions, and the sealing element ensures the sealing between the observation windows and the base, so that leakage of the insulating oil can be effectively prevented and safety hazards can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments of the utility model, it should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0018] Fig. 1 The overall structure schematic diagram of a visual oil storage tank provided by the embodiments of the utility model is shown in the drawings.

[0019] Fig. 2 The structure schematic diagram of an observation window provided by the embodiments of the utility model is shown in the drawings.

[0020] Fig. 3 The sectional view of a mounting assembly provided by the embodiments of the utility model is shown in the drawings.

[0021] Icon: 100-main body, 110-exhaust plug, 120-base, 130-oil inlet, 141-first observation window, 142-second observation window, 143-third observation window, 200-observation window, 300-base, 310-fixing cover, 320-sealing element, 330-bolt, 400-flange, 410-first pipeline, 411-first valve, 420-second pipeline, 421-second valve. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described below in combination with the drawings in the embodiments of the utility model.

[0023] It should be noted that: similar signs and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.It should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0024] Please refer to Figs. 1 to 3The utility model discloses a first aspect of technical scheme provides a kind of visual oil storage tank, including main body 100, capsule (not shown in drawing), exhaust component, float ball type liquid level meter (not shown in drawing), mounting assembly and several observation windows 200, the capsule and float ball type liquid level meter are located inside main body 100, the top of capsule is communicated with the outside of main body 100 by exhaust component, several observation windows 200 are located around main body 100 by mounting assembly, the mounting assembly includes base 300, fixed cover 310 and sealing element 320, the fixed connection between base 300 and main body 100, fixed cover 310 is spaced apart and located in the side of base 300 away from main body 100 and is detachably connected between base 300, the observation window 200 is located between base 300 and fixed cover 310, the sealing element 320 is located around observation window 200;Specifically, the main body 100 is preferably the cylindrical structure of two ends closed, and it is preferably made of carbon steel material of model Q235B and the inside of main body 100 is in vacuum state;The main role of capsule is to isolate air and insulating oil, prevent insulating oil from damp, and the top of capsule is communicated with the outside by exhaust component, when capsule expands or shrinks, can be adjusted by exhaust component internal and external pressure difference, ensure that capsule works normally;Float ball type liquid level meter is the characteristic of indicating oil level using float ball with oil surface height variation and lifting;The observation window 200 is preferably made of borosilicate toughened glass with a thickness of 19mm, the sealing element 320 is made of polytetrafluoroethylene material, when actually applied, observation window 200 is installed by base 300 and fixed cover 310, base 300 can be configured as annular structure, and is closely attached to main body 100 and is fixed by welding or other mechanical mode, the main role of base 300 is as the support platform of observation window 200 and other components, also provides mounting interface for fixed cover 310, fixed cover 310 can also be designed as annular structure, but size needs to be greater than base 300, so as to be able to cover the edge portion of observation window 200 and base 300, detachable connection is adopted between fixed cover 310 and base 300, for example bolt connection or quick-lock mechanism, so that it can be easily opened or closed when needed, the main role of fixed cover 310 is to protect observation window 200 from external influence, and sealing element 320 is located around observation window 200, and is closely attached to the gap between observation window 200 and base 300 and fixed cover 310, to play the role of isolating external environment.

[0025] The visual oil storage tank and oil-immersed transformer provided by the embodiment, wherein the visual oil storage tank is provided with observation windows 200 around the main body 100 through mounting assemblies, when the main body 100 is filled with insulating oil, the capsules float on the surface of the insulating oil and float up and down with the float ball type liquid level meter, thereby when the work such as oil injection, oil discharge and vacuum extraction in the main body 100 is performed, not only the oil level in the main body 100 can be directly observed, but also the working state of the capsules and the float ball type liquid level meter in the main body 100 can be observed from different angles through the observation windows 200, so that the problems such as the capsules not being unfolded, being damaged or the float ball type liquid level meter being stuck can be avoided; on the other hand, the observation windows 200 are installed through the mounting assemblies, a stable mounting structure is provided, the mounting assemblies are arranged to facilitate the maintenance and replacement of the observation windows 200, the base 300 and the fixed cover 310 are designed to provide a stable support structure, so that the observation windows 200 can stably work under various conditions, and the sealing between the observation windows 200 and the base 300 is ensured through the sealing element 320, so that the leakage of the insulating oil can be effectively prevented and the safety hidden danger can be reduced.

[0026] Preferably, the top of the main body 100 is provided with an exhaust port, the exhaust port is provided with an exhaust plug 110, and the exhaust plug 110 is detachably connected with the exhaust port; specifically, a hole with a proper size is reserved on the top of the main body 100 as the exhaust port, the exhaust port is preferably a circular or square opening, the size of which can be adjusted according to actual needs, the material of the exhaust plug 110 should have good sealing performance, and the size and shape of the exhaust plug 110 should match the exhaust port, preferably metal or plastic material, and the exhaust plug 110 and the exhaust port can be connected by, for example, threaded connection or buckle type connection; when the oil injection or oil discharge operation is performed, the exhaust plug 110 can be opened to release the generated gas, so as to avoid the internal pressure being too high.

[0027] Preferably, the base 300 and the fixed cover 310 are connected through bolts 330, and the side of the base 300 away from the fixed cover 310 is welded with the main body 100; specifically, the base 300 and the fixed cover 310 are both provided with corresponding threaded holes or mounting holes, the bolts 330 pass through the holes on the base 300 and the fixed cover 310, and are fastened by cooperating with nuts, so as to form detachable connection, a sealing gasket is placed between the base 300 and the fixed cover 310, so as to ensure the sealing of the connection and prevent liquid or gas from leaking, and the bolts 330 are used for connection, so that the observation windows 200 can be conveniently detached and replaced without the need of disassembling the main body 100.

[0028] Preferably, the exhaust assembly comprises a flange 400, a first pipe 410 and a second pipe 420, the flange 400 is arranged on the top of the main body 100 and communicates with the inside of the capsule, the first pipe 410 and the second pipe 420 are arranged on the flange 400 in a spaced manner, the first pipe 410 is provided with a first valve 411, and the second pipe 420 is provided with a second valve 421; specifically, the flange 400 is configured as a circular structure matched with the top of the main body 100, and the flange 400 can be connected with the top of the main body 100 by welding or screwing to ensure the sealing and stability of the connection; the first pipe 410 and the second pipe 420 can be used for supplementing or releasing the gas in the capsule and connecting with the oil-immersed transformer respectively, the first pipe 410 and the second pipe 420 should be arranged in a spaced manner, and the exhaust and air supplement processes can be independently controlled through the first valve 411 and the second valve 421 to improve the flexibility and accuracy of operation; in the embodiment, the flange 400 can be connected with a silica gel breather to avoid moisture condensation in the capsule and ice formation in cold weather.

[0029] Preferably, the bottom of the main body 100 is further provided with a base 120 and an oil filling port 130, the float type liquid level meter is installed on the base 120, the float type liquid level meter is used for detecting the oil level in the main body 100, and the oil filling port 130 is arranged in a spaced manner with the base 120; specifically, the material of the base 120 is configured to be the same as that of the main body 100, i.e. Q235B carbon steel material, to ensure sufficient strength and corrosion resistance; the base 120 is fixedly connected with the bottom of the main body 100 by welding, the float type liquid level meter is installed on the base 120, the float ball can move freely in the main body 100 and rise and fall with the change of the oil level, the float type liquid level meter reflects the change of the oil level in the main body 100 through the rise and fall of the float ball, and is usually equipped with an indicator or a sensor to directly display the oil level or output an electric signal; the oil filling port 130 is used for injecting insulating oil into the main body 100 and can be equipped with a valve or a cover to ensure good sealing in a non-oil filling state.

[0030] Preferably, the first side and the second side of the main body 100 are symmetrically provided with access holes, and the access holes are respectively provided with first observation windows 141; the third side and the fourth side of the main body 100 are symmetrically provided with a plurality of second observation windows 142, and the plurality of second observation windows 142 are arranged at intervals; the fifth side and the sixth side of the main body 100 are symmetrically provided with a plurality of third observation windows 200, and the plurality of third observation windows 143 are arranged at intervals; specifically, the number of the first observation windows 141, the second observation windows 142 and the third observation windows 143 can be adjusted according to actual needs; the access hole and the first observation window 141; the access hole is usually designed as a larger opening, which facilitates the staff to enter the inside of the main body 100 for maintenance or inspection; by symmetrically arranging different types of observation windows 200 around the main body 100, the inside of the main body 100 can be observed from multiple angles, which is helpful for comprehensively understanding the internal state.

[0031] The second aspect of the utility model provides a kind of oil-immersed transformer, the oil-immersed transformer includes the visual oil storage tank described in the first aspect of the utility model technical scheme, and the oil-immersed transformer is communicated between visual oil storage tank by pipeline;Specifically, the oil-immersed transformer can also be configured with control system, for example, by microcontroller by float ball type liquid level meter real-time monitoring the oil level in oil storage tank, when oil level is lower than preset value, trigger alarm signal, remind operator to handle in time;Temperature sensor can also be installed in the main body 100, to monitor oil temperature change.

[0032] In addition to the above description, the following points need to be explained:

[0033] (1) the drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can be referred to the usual design.

[0034] (2) in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0035] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.

Claims

1. A visual oil storage tank, characterized in that, The device includes a main body (100), a capsule, an exhaust assembly, a float-type level gauge, an installation assembly, and several observation windows (200). The capsule and the float-type level gauge are located inside the main body (100). The top of the capsule is connected to the outside of the main body (100) through the exhaust assembly. Several observation windows (200) are located around the main body (100) through the installation assembly. The installation assembly includes a base (300), a fixing cover (310), and a sealing element (320). The base (300) is fixedly connected to the main body (100). The fixing cover (310) is spaced apart on the side of the base (300) away from the main body (100) and is detachably connected to the base (300). The observation windows (200) are located between the base (300) and the fixing cover (310). The sealing element (320) is located around the observation windows (200).

2. The visualized oil storage tank according to claim 1, characterized in that, The top of the main body (100) is provided with an exhaust port, and an exhaust plug (110) is provided on the exhaust port. The exhaust plug (110) is detachably connected to the exhaust port.

3. The visualized oil storage tank according to claim 1, characterized in that, The base (300) and the fixing cover (310) are connected by bolts (330), and the side of the base (300) away from the fixing cover (310) is welded to the body (100).

4. The visualized oil storage tank according to claim 1, characterized in that, The exhaust assembly includes a flange (400), a first pipe (410), and a second pipe (420). The flange (400) is located on the top of the main body (100) and communicates with the inside of the capsule. The first pipe (410) and the second pipe (420) are spaced apart on the flange (400). The first pipe (410) is provided with a first valve (411), and the second pipe (420) is provided with a second valve (421).

5. The visualized oil storage tank according to claim 1, characterized in that, The bottom of the main body (100) is also provided with a base (120) and an oil inlet (130). The float-type liquid level gauge is installed on the base (120) and is used to detect the oil level in the main body (100). The oil inlet (130) and the base (120) are spaced apart.

6. The visualized oil storage tank according to claim 1, characterized in that, The seal (320) is made of polytetrafluoroethylene.

7. The visualized oil storage tank according to any one of claims 1 to 6, characterized in that, The main body (100) is provided with symmetrical access holes on the first and second sides, and each access hole is provided with a first observation window (141).

8. The visualized oil storage tank according to claim 7, characterized in that, The main body (100) has a plurality of second observation windows (142) symmetrically arranged on the third and fourth sides, and the plurality of second observation windows (142) are spaced apart.

9. The visualized oil storage tank according to claim 8, characterized in that, The fifth and sixth sides of the main body (100) are symmetrically provided with a plurality of third observation windows (143), and the plurality of third observation windows (143) are spaced apart.

10. An oil-immersed transformer, characterized in that, The oil-immersed transformer includes a visual oil storage tank as described in any one of claims 1 to 9, and the oil-immersed transformer is connected to the visual oil storage tank via a pipeline.

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