CN219601566U - Oil collecting device and water surface photovoltaic system - Google Patents

Abstract

The utility model discloses an oil collecting device and a water surface photovoltaic system. The oil collecting device is arranged on the floating platform to absorb oil leakage of the transformer. The oil collecting device is provided with an oil collecting groove and an oil storage cavity, the floating platform is provided with a mounting surface facing the transformer, the oil collecting groove is arranged on the mounting surface and faces the opening of the transformer, and the projection of the oil collecting groove on the mounting surface covers the projection of an oil leakage area of the transformer on the mounting surface; the oil storage cavity is arranged below the mounting surface, the bottom wall of the oil collecting groove is provided with a communication hole, the communication hole is communicated with the oil storage cavity, the oil storage cavity is provided with a water outlet, and the water outlet is used for discharging water after oil-water separation. According to the technical scheme, the oil leakage of the transformer can be guaranteed to be completely collected by the oil collecting groove. The leaked oil and the rainwater collected by the oil collecting groove flow into the oil storage cavity below the floating platform through the communicating hole, so that the leaked oil of the transformer is fully collected, and meanwhile, the oil is prevented from overflowing.

Description

Oil collecting device and water surface photovoltaic system

Technical Field

The utility model relates to the technical field of photovoltaic equipment, in particular to an oil collecting device and a water surface photovoltaic system.

Background

In photovoltaic power generation, a transformer is an indispensable device, and under the increasingly strong market conditions, a high-power transformer is more applied to the water surface photovoltaic project. There has been no reliable solution to the problems of leakage and drainage of cooling oil within oil-immersed transformers.

In the current water surface photovoltaic project, a transformer is placed on a floating platform, the surface of the floating platform is grooved, and cobbles or oil absorption substances are placed in the grooves, so that the purpose of collecting cooling oil is achieved. However, as the tank body must be open-air, rainwater can enter the tank together, drainage cannot be performed, and when the tank is full, oil and water can overflow together; the scheme has less oil leakage in collection and can not collect a large amount of cooling oil in the transformer.

Disclosure of Invention

The utility model mainly aims to provide an oil collecting device which aims to fully absorb oil leakage of a transformer and ensure that the oil does not outflow.

In order to achieve the above object, the oil collecting device provided by the utility model is mounted on a floating platform so as to absorb oil leakage of a transformer, the oil collecting device is provided with an oil collecting groove and an oil storage cavity, the floating platform is provided with a mounting surface facing the transformer, the oil collecting groove is arranged on the mounting surface and faces the opening of the transformer, and the projection of the oil collecting groove on the mounting surface covers the projection of an oil leakage area of the transformer on the mounting surface;

the oil storage cavity is arranged below the mounting surface, a communication hole is formed in the bottom wall of the oil collecting groove and communicated with the oil storage cavity, a water outlet is formed in the oil storage cavity and used for discharging water after oil-water separation.

In an embodiment, the oil collecting device further includes a first water pipe, and the first water pipe is disposed in the communication hole and extends into the oil storage cavity.

In an embodiment, the oil collecting device further comprises a second water pipe, the second water pipe extends along the gravity direction, the upper end of the second water pipe is communicated with the outside, and the lower end of the second water pipe stretches into the bottom of the oil storage cavity to form the water outlet.

In an embodiment, an oil-water separation film is arranged in the oil storage cavity, the oil-water separation film divides the oil storage cavity into a first cavity and a second cavity, the communication hole is communicated with the first cavity, and the water outlet is communicated with the second cavity.

In an embodiment, the oil collecting device is further provided with a water draining cavity, the water draining cavity is arranged on at least one side of the oil storage cavity, and the water draining port is communicated with the water draining cavity;

the oil collecting device further comprises a third water pipe, the third water pipe extends along the gravity direction, the upper end of the third water pipe is communicated with the outside, and the lower end of the third water pipe stretches into the bottom of the drainage cavity.

In an embodiment, the oil collecting device further comprises a first cover body and a second cover body, the oil storage cavity and the top of the water drainage cavity are respectively provided with a first opening and a second opening, the first opening and the second opening are all arranged on the outer side of the oil collecting groove, the first cover body covers the first opening, and the second cover body covers the second opening.

In an embodiment, the oil storage cavity is internally provided with oil absorbing cotton.

In an embodiment, the volume of the oil storage cavity is defined as V1, the oil storage capacity of the transformer is defined as V2, and the condition is satisfied: v1 is more than or equal to 1.5V2.

10. A surface photovoltaic system, characterized in that the surface photovoltaic system comprises:

a floating platform;

the transformer is arranged on the floating platform;

and the oil collecting device is arranged on the floating platform to collect cooling oil of the transformer.

In an embodiment, the communicating hole is provided with a filter screen to block foreign matters from entering the oil storage cavity.

The utility model also provides a water surface photovoltaic system, which comprises:

a floating platform;

the transformer is arranged on the floating platform;

the oil collecting device is any one of the oil collecting devices, and is arranged on the floating platform to collect cooling oil of the transformer.

According to the technical scheme, the oil collecting device is arranged on the floating platform, the oil collecting groove arranged on the installation surface of the floating platform is arranged towards the opening of the transformer, and the projection of the oil collecting groove on the installation surface covers the projection of the oil leakage area of the transformer on the installation surface, so that the oil leakage of the transformer is ensured to be completely collected by the oil collecting groove. The leaked oil and rainwater collected by the oil collecting groove flow into the oil storage cavity below the floating platform through the communicating hole, and after oil and water are separated, the water is discharged in time through the water outlet, so that the leaked oil of the transformer is fully collected, and meanwhile, the oil is prevented from overflowing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of an embodiment of a water-surface photovoltaic system of the present utility model;

fig. 2 is a schematic cross-sectional structure of an embodiment of the oil collecting device of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the current water surface photovoltaic project, the transformer 200 is placed on the floating platform, the surface of the floating platform is grooved, and cobbles or oil absorption substances are placed in the grooves, so that the purpose of collecting cooling oil is achieved. However, as the tank body must be open-air, rainwater can enter the tank together, drainage cannot be performed, and when the tank is full, oil and water can overflow together; this solution has less oil leakage and cannot collect a large amount of cooling oil in the transformer 200.

In view of this, the present utility model proposes an oil collecting device 100 for fully absorbing the oil leakage of the transformer 200 and ensuring that the oil does not flow out.

Referring to fig. 1 and 2, in some embodiments of the present utility model, an oil collecting device 100 is mounted to a floating platform 300 to absorb oil leakage of a transformer 200. The oil collecting device 100 is provided with an oil collecting tank 10 and an oil storage cavity 30, the floating platform 300 is provided with a mounting surface facing the transformer 200, the oil collecting tank 10 is arranged on the mounting surface and is arranged towards an opening of the transformer 200, and the projection of the oil collecting tank 10 on the mounting surface covers the projection of an oil leakage area 210 of the transformer 200 on the mounting surface; the oil storage chamber 30 is arranged below the mounting surface, a communication hole is arranged at the bottom wall of the oil collecting groove 10, the communication hole is communicated with the oil storage chamber 30, the oil storage chamber 30 is provided with a water outlet 311, and the water outlet 311 is used for discharging water after oil-water separation.

In one embodiment, the floating platform 300 floats on the water surface, the surface facing away from the water surface is a mounting surface, and the transformer 200 is mounted on the mounting surface. The oil collecting device 100 is installed on the floating platform 300, the oil collecting tank 10 is arranged on the installation surface, the shape of the oil collecting tank 10 is not required, the size of the oil collecting tank is larger than the oil leakage area 210 of the transformer 200, and the projection of the oil collecting tank 10 on the installation surface covers the projection of the oil leakage area 210 of the transformer 200 on the installation surface, or the projection of the oil leakage area 210 of the transformer 200 on the installation surface is in the projection of the oil collecting tank 10 on the installation surface, so that the oil leakage of the transformer 200 can be collected comprehensively by the oil collecting tank 10. For example, the transformer 200 has a substantially square oil leakage area 210, and the opening of the oil sump 10 may be square, but the size of the opening is larger than that of the oil leakage area 210.

Considering the heat dissipation requirement of the transformer 200, the oil sump 10 needs to be designed in the open air, so that the liquid such as the external rainwater can also enter the oil sump 10, and enter the oil storage cavity 30 below the installation surface from the communication port together with the leaked oil to be stored. It will be appreciated that the internal volume of the oil reservoir 30 is large enough that it can contain sufficient amounts of oil leakage and water to effectively avoid oil leakage. In addition, the oil-water mixture is separated in the oil storage cavity 30 under the action of gravity or a film layer, and the oil storage cavity 30 timely discharges water through the water outlet 311, so that the shortage of the capacity of the oil storage cavity 30 is avoided, and the recovery of leaked oil is facilitated.

According to the technical scheme of the utility model, the oil collecting device 100 is arranged on the floating platform 300, the oil collecting groove 10 arranged on the installation surface of the floating platform 300 is arranged towards the opening of the transformer 200, and the projection of the oil collecting groove 10 on the installation surface covers the projection of the oil leakage area 210 of the transformer 200 on the installation surface, so that the oil leakage of the transformer 200 is ensured to be completely collected by the oil collecting groove 10. The leaked oil and the rainwater collected in the oil sump 10 flow into the oil storage chamber 30 under the floating platform 300 through the communication hole, and after oil-water separation, the water is discharged in time through the water discharge outlet 311, thereby avoiding the oil from overflowing while ensuring that the leaked oil of the transformer 200 is sufficiently collected.

Referring to fig. 2, in an embodiment, the oil collecting device 100 further includes a first water pipe 11, where the first water pipe 11 is disposed in the communication hole and extends into the oil storage chamber 30.

In the present embodiment, the cross-sectional shape of the first water pipe 11 is adapted to the shape of the communication hole to secure the stability of the first water pipe 11 and to allow the liquid in the oil sump 10 to smoothly enter the first water pipe 11. The first water pipe 11 extends into the oil storage cavity 30, and the first water pipe 11 plays a role in drainage, so that liquid can quickly and smoothly enter the oil storage cavity 30 through the first water pipe 11.

It should be noted that the first water pipe 11 has a limited extension length and is generally located above the liquid level in the oil storage chamber 30 to avoid suck-back.

In one embodiment, defining the volume of oil storage chamber 30 as V1 and the oil storage capacity of transformer 200 as V2, the condition is satisfied: v1 is more than or equal to 1.5V2. Because the oil collecting tank 10 may mix with the liquid such as rainwater in the oil collecting process, this embodiment can store other liquid such as equivalent rainwater while ensuring that the oil storage cavity 30 can completely absorb all the cooling oil in the transformer 200, thereby further avoiding the overflow of the liquid in the oil storage cavity 30 and resulting in leakage of oil.

Referring to fig. 2, in one embodiment, an oil absorbing cotton 33 is provided in the oil storage chamber 30. In this embodiment, the oil absorbing cotton 33 absorbs oil without absorbing water, and when the oil leakage is small, the separation of oil and water can be realized through the oil absorbing cotton 33. And when the oil leakage is recovered, the oil absorbing cotton 33 is taken out for treatment, so that the method is convenient and quick.

In an embodiment, the oil collecting device 100 further includes a second water pipe 31, the second water pipe 31 extends along the gravity direction, the upper end of the second water pipe 31 is communicated with the outside, and the lower end of the second water pipe 31 extends into the bottom of the oil storage cavity 30 to form a water outlet 311.

If the oil leakage quantity is too large, the oil absorbing cotton 33 is saturated, the excessive oil can leak out together with the water, the liquid quantity is gradually increased, and the oil absorbing cotton 33 floats above the liquid level under the buoyancy action of the liquid. Because the densities of the oil and the water are different, the density of the oil is smaller, the density of the water is larger, the liquid mixed by the oil and the water can be layered under the action of gravity, the lower end of the second water pipe 31 stretches into the water layer, and the upper end of the second water pipe is at a certain height from the water layer and stretches out from the side wall of the oil storage cavity 30. Thus, water is discharged from the lower end of the second water pipe 31 to the oil storage chamber 30 through the second water pipe 31 by gravity.

Alternatively, in other embodiments, an oil-water separation film is disposed in the oil storage cavity 30, the oil-water separation film divides the oil storage cavity 30 into a first chamber and a second chamber, the communication hole communicates with the first chamber, and the drain outlet 311 communicates with the second chamber.

In an embodiment, an oil-water separation film is horizontally disposed in the oil storage chamber 30, the first chamber and the second chamber are disposed up and down, when the liquid entering the first chamber passes through the oil-water separation film under the action of gravity, water is allowed to pass through and enter the second chamber, and oil is blocked, so that separation of oil and water is achieved, and water is discharged through the water outlet 311.

Referring again to fig. 2, in an embodiment, the oil collecting device 100 is further provided with a drain cavity 50, the drain cavity 50 is disposed on at least one side of the oil storage cavity 30, and the drain outlet 311 communicates with the drain cavity 50. In this embodiment, the liquid discharged from the drain port 311 enters the drain chamber 50. Alternatively, in order to make the drainage of the oil storage chamber 30 more uniform and rapid, the drainage chamber 50 is provided on both sides of the oil storage chamber 30 or the drainage chamber 50 is provided around the oil storage chamber 30.

The oil collecting device 100 further includes a third water pipe 51, the third water pipe 51 extends along the gravity direction, the upper end of the third water pipe 51 is communicated with the outside, and the lower end of the third water pipe 51 extends into the bottom of the drainage cavity 50.

If the liquid discharged from the drain port 311 includes not only water but also oil, the oil and water may be layered in the drain chamber 50 by gravity, and likewise, the lower end of the third water pipe 51 extends into the water layer, and the water enters the third water pipe 51 from the lower end and is discharged out of the drain chamber 50 through the third water pipe 51. The effect of water drainage and oil-water separation is further ensured by the provision of the drainage chamber 50 and the third water pipe 51.

Referring to fig. 2, in an embodiment, the oil collecting device 100 further includes a first cover 35 and a second cover 53, the top of the oil storage cavity 30 and the top of the drain cavity 50 are respectively provided with a first opening and a second opening, the first opening and the second opening are both disposed on the outer side of the oil collecting tank 10, the first cover 35 is disposed on the first opening, and the second cover 53 is disposed on the second opening.

In this embodiment, the first cover 35 and the second cover 53 are respectively adapted to the shapes of the first opening and the second opening, so as to ensure tightness and prevent external foreign matters from entering the cavity below. It will be appreciated that the provision of the first and second openings facilitates the collection of oil by personnel and the maintenance of the interior of the device.

Further, in an embodiment, the communication hole is provided with a filter screen to prevent foreign matters from entering the oil storage cavity 30, reduce the foreign matters entering the liquid in the oil storage cavity 30, and prevent the water pipe communicated with each cavity from being blocked by the foreign matters, so that the oil collecting device 100 can be kept for a long time, the maintenance frequency is reduced, and the manpower and time are saved.

The utility model also provides a water surface photovoltaic system, which comprises a floating platform 300, a transformer 200 and an oil collecting device 100, wherein the transformer 200 is arranged on the floating platform 300, the specific structure of the oil collecting device 100 refers to the embodiment, and the oil collecting device 100 is arranged on the floating platform 300 to collect cooling oil of the transformer 200. The water surface photovoltaic system adopts all the technical schemes of all the embodiments, so that the water surface photovoltaic system has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. An oil collecting device is arranged on a floating platform to absorb oil leakage of a transformer, and is characterized in that the oil collecting device is provided with an oil collecting groove and an oil storage cavity, the floating platform is provided with a mounting surface facing the transformer, the oil collecting groove is arranged on the mounting surface and faces the opening of the transformer, and the projection of the oil collecting groove on the mounting surface covers the projection of an oil leakage area of the transformer on the mounting surface;

the oil storage cavity is arranged below the mounting surface, a communication hole is formed in the bottom wall of the oil collecting groove and communicated with the oil storage cavity, a water outlet is formed in the oil storage cavity and used for discharging water after oil-water separation.

2. The oil collecting device according to claim 1, further comprising a first water pipe provided in the communication hole and extending into the oil storage chamber.

3. The oil collecting device according to claim 2, further comprising a second water pipe extending in the gravity direction, wherein an upper end of the second water pipe communicates with the outside, and a lower end of the second water pipe extends into the bottom of the oil storage chamber to form the drain port.

4. The oil collecting device according to claim 1, wherein an oil-water separation film is arranged in the oil storage cavity, the oil-water separation film divides the oil storage cavity into a first cavity and a second cavity, the communication hole is communicated with the first cavity, and the water outlet is communicated with the second cavity.

5. The oil collecting device according to claim 3 or 4, wherein the oil collecting device is further provided with a drainage cavity, the drainage cavity is arranged on at least one side of the oil storage cavity, and the drainage outlet is communicated with the drainage cavity;

the oil collecting device further comprises a third water pipe, the third water pipe extends along the gravity direction, the upper end of the third water pipe is communicated with the outside, and the lower end of the third water pipe stretches into the bottom of the drainage cavity.

6. The oil collecting device according to claim 5, further comprising a first cover and a second cover, wherein the top of the oil storage cavity and the top of the water drainage cavity are respectively provided with a first opening and a second opening, the first opening and the second opening are all arranged on the outer side of the oil collecting groove, the first cover is covered on the first opening, and the second cover is covered on the second opening.

7. The oil collecting device as claimed in claim 1, wherein oil absorbing cotton is arranged in the oil storage cavity.

8. The oil collection device of claim 1, wherein the volume of the oil storage chamber is defined as V1, the oil storage capacity of the transformer is defined as V2, and the condition is satisfied: v1 is more than or equal to 1.5V2.

9. The oil collecting apparatus according to claim 1, wherein the communication hole is provided with a filter screen to block foreign matter from entering the oil storage chamber.

10. A surface photovoltaic system, characterized in that the surface photovoltaic system comprises:

a floating platform;

the transformer is arranged on the floating platform;

an oil collecting device according to any one of claims 1 to 9, which is mounted to the floating platform to collect cooling oil of the transformer.