Novel oil-immersed transformer of oil level indicator

Abstract

The oil-immersed transformer comprises an oil storage tank and the oil level indicator arranged on the oil storage tank, the side wall of the oil level indicator is provided with an observation window, the top of the oil level indicator is provided with a pressure relief valve, and the oil level indicator is sleeved with a rain cover. The rain cover is arranged on the pressure relief valve in a suspended mode and extends downwards to completely cover an observation window of the oil level gauge, a plurality of connecting pieces are arranged on the inner top wall of the rain cover in a suspended mode, and the rain cover is matched with the top of the oil level gauge in a clamped mode through the connecting pieces. The rainproof cover made of transparent organic glass is arranged on the oil level gauge and completely covers the observation window of the oil level gauge, and it can be further guaranteed that rainwater cannot intrude into the transformer through the observation window under the condition that observation of the oil quantity value in the oil level gauge is not affected; the length of the connecting piece is larger than the height of the pressure relief valve, that is, the rain cover is hung on the pressure relief valve, a certain space is reserved between the top wall of the rain cover and the pressure relief valve, and the action of the pressure relief valve is prevented from being affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to an oil-immersed transformer with a novel oil level gauge. Background Art

[0002] At present, most oil-immersed distribution transformers use oil level gauges with pressure relief valves to protect the oil tank. When an oil-immersed transformer fails during operation, part of the transformer oil vaporizes due to overheating of the coil, and the pressure in the transformer tank increases rapidly. At this time, the pressure relief valve is used to act to protect the oil tank from deformation or bursting.

[0003] The oil level gauge is used to observe the oil level through the observation window to determine whether the transformer has sufficient oil. In a limited space, the observation window glass is currently attached to the inside of the oil level gauge tube with weather-resistant glue, which poses a risk of poor sealing; in windy and rainy weather, rainwater enters the transformer and causes the transformer to burn out. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides an oil-immersed transformer with a novel oil level gauge, which solves the problem of rainwater entering due to insufficient sealing of the oil level gauge observation window by arranging a rainproof cover on the oil level gauge.

[0005] The oil-immersed transformer of the novel oil level gauge comprises an oil storage tank and an oil level gauge arranged on the oil storage tank, an observation window is arranged on the side wall of the oil level gauge, a pressure release valve is arranged on the top, a rain cover is sleeved on the oil level gauge, the rain cover is suspended on the pressure release valve and extends downward to completely cover the observation window of the oil level gauge, and a plurality of connecting pieces are suspended on the top wall of the rain cover, which are snap-fitted with the top of the oil level gauge through the connecting pieces.

[0006] Furthermore, a hood opening at the bottom of the rain cover extends outward to form a burr edge, and the burr edge is inclined downward.

[0007] Furthermore, the top of the connecting piece is fixedly connected to the top of the rain cover, the bottom is clamped to the top of the oil level gauge, and the length of the connecting piece is greater than the height of the pressure relief valve.

[0008] Furthermore, a plurality of slot holes are arranged on the top of the oil level gauge corresponding to the connecting piece.

[0009] Furthermore, a buckle is provided at the bottom of the connecting piece to fit and lock with the slot hole.

[0010] Furthermore, the connecting members include at least two and are evenly arranged around the circumference of the oil level gauge.

[0011] Furthermore, a weight-reducing groove is provided on the connecting member.

[0012] Furthermore, the material of the rain cover is transparent organic glass.

[0013] Compared with the prior art, the utility model has the following advantages: the utility model provides a rain cover made of transparent organic glass on the oil level gauge, and the rain cover completely covers the observation window of the oil level gauge, which can further ensure that rainwater cannot enter the transformer through the observation window without affecting the observation of the oil value in the oil level gauge; the length of the connecting piece is greater than the height of the pressure release valve, that is, the rain cover is suspended on the pressure release valve, so that a certain space is left between the top wall of the rain cover and the pressure release valve to avoid affecting the action of the pressure release valve. In addition, a buckle is provided at the bottom of the connecting piece to cooperate with the slot hole on the top of the oil level gauge, which not only has a simple structure and is easy to install, but also further ensures the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1-oil storage tank, 2-oil level gauge, 21-observation window, 22-oil level gauge seat, 3-pressure relief valve, 4-rain cover, 41-flash, 5-connecting piece, 51-clip. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 The embodiment shown is a novel oil-immersed transformer with an oil level gauge, comprising an oil storage tank 1 and an oil level gauge 2 arranged on the oil storage tank 1, an observation window 21 being arranged on the side wall of the oil level gauge 2, a pressure release valve 3 being arranged on the top, a rain cover 4 being sleeved on the oil level gauge 2, the rain cover 4 being suspended on the pressure release valve 3 and extending downward to completely cover the observation window 21 of the oil level gauge 2, and a plurality of connectors 5 being suspended on the inner top wall of the rain cover 4, and engaging with the top of the oil level gauge 2 through the connectors 5. That is, the top of the connector 5 is fixedly connected to the top of the rain cover 4, the bottom is engaged with the top of the oil level gauge 2, and the length of the connector 5 is greater than the height of the pressure release valve 3.

[0018] It can be understood that the pressure relief valve is arranged above the oil level gauge and is connected to the inside of the oil storage tank through the tube of the oil level gauge. When the pressure in the oil storage tank is too high, the pressure sensor senses the excessive pressure, and then opens the pressure relief valve. At this time, the pressure in the oil tank can be released along the tube through the pressure relief valve, further improving the safety performance. The length of the connector is greater than the height of the pressure relief valve, that is, a certain space is left between the top wall of the rain cover and the pressure relief valve to avoid affecting the action of the pressure relief valve.

[0019] In the present embodiment, the cover opening at the bottom of the rain cover 4 extends outwards to be provided with a flashing edge 41, and the flashing edge 41 is arranged to be tilted downwards for drainage. In order not to affect the sight line of the observation window 21, the material of the rain cover 4 is transparent organic glass.

[0020] Continue reading Figure 1 It can be seen that the oil level gauge 2 is fixedly arranged on the cover plate of the oil storage tank 1 through the oil level gauge seat 22, and a plurality of slot holes are arranged on the top of the oil level gauge 2 corresponding to the connecting member 5. A buckle 51 is arranged at the bottom of the connecting member 5 to fit and fasten with the slot holes.

[0021] To ensure the stability of the connection between the rain cover 4 and the oil level gauge 2, the top of the connector 5 is integrally arranged with the top wall of the rain cover 4, and the connector 5 includes at least two, preferably three or four, connectors 5 that are evenly arranged around the circumference of the oil level gauge 2. In order to reduce the weight of the connector 5, a weight reduction groove is also provided on the connector 5.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A novel oil-immersed transformer with an oil level gauge, comprising an oil storage tank (1) and an oil level gauge (2) arranged on the oil storage tank (1), wherein the oil level gauge (2) is provided with an observation window (21) on the side wall and a pressure release valve (3) on the top, and is characterized in that: The oil level gauge (2) is sleeved with a rain cover (4), the rain cover (4) being suspended on the pressure release valve (3) and extending downward to completely cover the observation window (21) of the oil level gauge (2), and a plurality of connecting pieces (5) are suspended from the top wall of the rain cover (4), which are engaged with the top of the oil level gauge (2) through the connecting pieces (5).

2. The oil-immersed transformer of a novel oil level gauge according to claim 1 is characterized in that: The cover opening at the bottom of the rain cover (4) extends outwards to form a fin (41), and the fin (41) is arranged to be inclined downwards.

3. The oil-immersed transformer of the novel oil level gauge according to claim 1 is characterized in that: The length of the connecting piece (5) is greater than the height of the pressure relief valve (3).

4. The oil-immersed transformer of the novel oil level gauge according to claim 3 is characterized in that: A plurality of slot holes are provided on the top of the oil level gauge (2) corresponding to the connecting piece (5).

5. The oil-immersed transformer of the novel oil level gauge according to claim 4 is characterized in that: A buckle (51) is provided at the bottom of the connecting piece (5) and is engaged with the slot hole for fastening.

6. A novel oil level gauge for oil-immersed transformer according to any one of claims 1 to 5, characterized in that: The connecting parts (5) include at least two and are evenly arranged around the circumference of the oil level gauge (2).

7. The oil-immersed transformer of the novel oil level gauge according to claim 6 is characterized in that: The connecting member (5) is also provided with a weight-reducing groove.

8. The oil-immersed transformer of the novel oil level gauge according to any one of claims 1 to 5, characterized in that: The material of the rain cover (4) is transparent organic glass.

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