Accident oil pit for boosting block of offshore wind plant

Abstract

The invention discloses an accident oil pit for a boosting block of an offshore wind plant, which belongs to the technical field of offshore wind power and comprises a plurality of I-shaped beams below oil equipment, each I-shaped beam consists of a vertical beam web, an upper beam flange positioned at the top of the beam web and a lower beam flange positioned at the bottom of the beam web, the upper-layer steel grating and the lower-layer first bed board are arranged below the oil-carrying equipment, the steel grating and the first bed board are respectively fixed with the I-shaped beams to form a hollow structure serving as an accident oil pit, the accident oil pit is divided into a plurality of beam grids by the I-shaped beams, and each beam grid is provided with flow holes to enable the beam grids to be communicated with each other. An accident oil pit structure with the elevation below 0 m is adopted, an original I-beam structure is fully utilized, and the accident oil pit is hidden, is flat and attractive under the normal overhaul working condition and is high in operation and maintenance comfort degree; oil leakage is smooth by adopting the steel grating; the beam grids in the accident oil pit are provided with flow holes to enable the beam grids to be communicated, and oil / water discharge is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore wind power, and in particular relates to an accident oil pit for a booster module of an offshore wind farm. Background Art

[0002] The offshore booster station is the "heart" of the offshore wind farm. It has the core boosting and transformation function of the entire farm. The reliable operation of its key equipment, such as the main transformer and high-voltage equipment, throughout its life cycle is of utmost importance. Similar to the oil-containing equipment in offshore oil and gas projects, oil retaining devices are also required around the main transformer and other oil-containing equipment to prevent oil leakage from the equipment body and spillage to other locations in the room under accident conditions. The setting of the oil retaining device, on the one hand, takes into account that the accident oil itself is difficult to clean, especially if it spreads to the distribution cabinets and control boxes inside the room. After being stained with oil, the appearance is low and there is a fire risk; on the other hand, the oil retaining device is used to collect and temporarily store the accident oil for subsequent recycling and reuse.

[0003] Under the existing technology, the oil baffle device adopts the oil baffle plate method, which has the characteristics of simple production and material saving. However, the accident oil collection under this method is based on the original plank structure. When an oil leak occurs, the accident oil will flood the base and even the basic equipment, causing great trouble for subsequent cleaning; in addition, the oil baffle plate of this method occupies the passage in the room, which interferes with daily maintenance and operation, and has a low comfort level. Summary of the invention

[0004] In view of the low aesthetics, operation and maintenance comfort, and maintenance convenience of the accident oil pit represented by the main transformer room, radiator and other oil-bearing equipment in the offshore booster module, the present invention proposes an accident oil pit located below the elevation of 0m, which makes full use of the original beam web structure to form a convenient oil / water drainage solution.

[0005] The present invention is achieved through the following technical solutions.

[0006] An accident oil pit for an offshore wind farm booster module comprises a plurality of I-beams below an oil-carrying device, wherein the I-beams are composed of a vertical beam web, an upper beam flange located at the top of the beam web, and a lower beam flange located at the bottom of the beam web. The invention also comprises a steel grating and a first floor plate arranged below the oil-carrying device, wherein a hollow structure formed by fixing the upper steel grating and the lower first floor plate to the I-beams respectively serves as the accident oil pit, and the beam webs divide the accident oil pit into a plurality of beam grids, and each of the beam grids is provided with flow holes to enable the beam grids to communicate with each other.

[0007] Furthermore, the first deck board is 6 mm thick and is sunken 300 mm.

[0008] Furthermore, the flow hole comprises a semicircular hole, a semicircular tube and a flat steel, a semicircular hole is opened on the web of the beam, and the semicircular tube and the flat steel pass through the semicircular hole.

[0009] Furthermore, when the second floor board is laid in other rooms, the connection method between the steel grille and the second floor board is that the second floor board is placed on the upper beam flange and the steel grille is a certain distance away from the upper beam flange, the steel grille is flush with the top layer of the second floor board, and the steel grille is connected to the second floor board through a first connecting device, the first connecting device includes a steel plate platform, the steel plate platform is an L-shaped structure and is welded to the beam web, and the steel grille is fixed on the steel plate platform.

[0010] Furthermore, a support assembly is arranged in the steel plate platform, and the support assembly adopts unequal angle steels, and unequal angle steels are added in the steel plate platform every 0.5m.

[0011] Furthermore, when the second floor board is laid in other rooms, the connection method between the steel grating and the second floor board is that the second floor board and the steel grating are both arranged on the flange of the upper beam, the steel grating is flush with the bottom layer of the second floor board, and the steel grating and the second floor board are connected by a second connecting device, the second connecting device includes unequal angle steels and steel plates, the unequal angle steels are arranged above the edge of the second floor board, and the gentle slope formed by the unequal angle steels is connected to the top layer of the steel grating, and the gap between the unequal angle steels and the second floor board is welded and sealed by the steel plate.

[0012] Furthermore, when the steel grating is arranged on the upper beam flange, the upper beam flange and the steel grating are connected by a fixing device, and the fixing device consists of a saddle clamp, an anti-loosening bolt and an anti-loosening nut. The saddle clamps respectively cover and fix the steel grating, and the anti-loosening bolts pass through the saddle clamps and are screwed into the upper beam flange and fastened with the anti-loosening nuts.

[0013] Furthermore, the spacing between the fixing devices is no more than 800 mm, there is at least one fixing device on each side of the steel grating, a fixing device is arranged on each upper beam flange under the steel grating, there are no less than 2 fixing devices on each upper beam flange, and each steel grating has at least 4 fixing devices.

[0014] Furthermore, when the steel gratings are placed on the upper beam flange, two pieces of the steel gratings are placed centrally above the upper beam flange, and the distance between the two pieces of the steel gratings is 15 to 25 mm.

[0015] Furthermore, if an equipment base plate is provided between the steel gratings and the equipment base plate is placed on the upper beam flange, resulting in the steel grating being placed on the upper beam flange for a length less than 50 mm, a supporting steel plate is provided under the steel grating, and the supporting steel plate is connected to the steel grating by a fixing device. The supporting steel plate adopts unequal angle steel, which is welded at the connection between the supporting steel plate and the upper beam flange and the steel grating. A fixing device is provided on each supporting steel plate under the steel grating, and there are no less than two fixing devices on each supporting steel plate.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention adopts an accident oil pit structure below 0m elevation, making full use of the original I-beam structure. The accident oil pit is concealed and flat and beautiful under normal maintenance conditions. The steel grille used has smooth oil leakage on the one hand and convenient replaceability on the other hand, so the beauty of the room can be guaranteed after the oil leakage.

[0018] 2. The two second decking-steel grating connection methods proposed in the present invention take into account the flatness of the maintenance passage, greatly improve the comfort of personnel and tool vehicles during operation and maintenance, have a simple structure, and can be adapted and selected according to different scenarios.

[0019] 3. The flow holes are arranged on the inner beam grid of the accident oil pit of the present invention, which reduces the need for too dense oil drainage floor drains, and can effectively deal with the problem of water accumulation due to fire water spray or outdoor rainwater (radiator position). The pipeline connecting the first layer of accident oil tank is unobstructed, and oil / water drainage is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the plan layout of the accident oil pit of the present invention;

[0021] Figure 2 It is a cross-sectional view of an accident oil pit of the present invention;

[0022] Figure 3 is a cross-sectional view of the flow hole of the present invention;

[0023] Figure 4 is a cross-sectional view of a first connection scheme of the steel grid and the second decking of the present invention;

[0024] Figure 5 It is the second decking-steel grid transition detail diagram of the present invention;

[0025] Figure 6 is a cross-sectional view of a second connection scheme of the steel grid and the second decking of the present invention;

[0026] Figure 7 It is the second decking-steel grid transition detail diagram of the present invention;

[0027] Figure 8 is a cross-sectional view of the steel grille fixing device of the present invention;

[0028] Fig. 9 It is a detailed diagram of fixing the steel grille and the upper beam flange of the present invention;

[0029] Fig.10 It is a detailed diagram of fixing the steel grille and the supporting steel plate of the present invention.

[0030] In the figure: accident oil pit 1, I-beam 2, beam web 21, upper beam flange 22, lower beam flange 23, flow hole 3, beam grid 4, steel grating 5, first deck 6, second deck 7, oil-carrying equipment 8, first connecting device 9, steel plate platform 9-1, supporting assembly 9-2, second connecting device 10, unequal angle steel 10-1, steel plate 10-2, fixing device 11, saddle clamp 11-1, anti-loosening bolt 11-2, anti-loosening nut 11-3, supporting steel plate 12, equipment base plate 13. DETAILED DESCRIPTION

[0031] The following further describes the structures involved in the present invention or the technical terms used in these descriptions. These descriptions are only used as examples to illustrate how the methods of the present invention are implemented, and cannot constitute any limitation to the present invention.

[0032] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "lateral", "longitudinal", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, "connection", "fixation" and the like should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-10As shown, this embodiment introduces an accident oil pit for an offshore wind farm booster module, including multiple I-beams 2 below the oil-carrying equipment. The I-beams 2 are composed of a vertical beam web 21, an upper beam flange 22 located at the top of the beam web 21, and a lower beam flange 23 at the bottom. It also includes an upper steel grid 5 and a lower first floor plate 6 arranged below the main transformer room, radiator and other oil-carrying equipment 8. The steel grid 5 and the 6mm thick first floor plate 6 are respectively welded with the I-beam 2 to form a hollow structure as the accident oil pit 1. The I-beam 2 divides the accident oil pit 1 into a plurality of beam grids 4, and each beam grid 4 is provided with a flow hole 3 to make the beam grids 4 intercommunication. The accident oil pit 1 is arranged below the main transformer room, radiator and other oil-carrying equipment 8, which is convenient for the collection and temporary storage of accident oil / water. At the same time, the accident oil pit 1 is concealed and flat and beautiful under normal maintenance conditions.

[0035] like Figure 2 , 3 As shown, the flow hole 3 opens a semicircular hole on the beam web 21, through which the semicircular tube 3-1 and the flat steel 3-2 pass, and are welded to the surrounding components. The flow hole 3 is interconnected with each beam grid 4 separated by the beam web 21, which reduces the need for setting too dense oil drainage floor drains, and can effectively deal with the problem of fire water spray or outdoor rainwater (radiator position) water accumulation, and the pipeline connecting the first layer of accident oil tank is unobstructed, and oil / water drainage is convenient.

[0036] Different from the second floor board 7 in other rooms, steel grilles 5 are laid under the main transformer room, radiator and other oil-bearing equipment 8. Due to the difference in thickness between the steel grilles 5 and the 6 mm thick second floor board 7, and considering the flatness of the maintenance passage, two connection methods between the steel grilles 5 and the second floor board 7 are proposed for selection to suit different scenarios.

[0037] like Figure 4 As shown, the connection method between the steel grille 5 and the second floor board 7 is that the second floor board 7 of the lower bunk bed in other rooms is placed on the upper beam flange 22 and the steel grille 5 is a certain distance away from the upper beam flange 22, the steel grille 5 is flush with the top layer of the second floor board 7, and the steel grille 5 and the second floor board 7 are connected by the first connecting device 9, and the height of the first connecting device 9 is adjusted to make the steel grille 5 flush with the top layer of the second floor board 7.

[0038] like Figure 5 As shown, the first connecting device 9 is welded by the steel plate platform 9-1 to form an L-shaped structural platform, which is welded to the beam web 21, and the steel grille 5 is fixed on the steel plate platform 9-1 so that the steel grille 5 is arranged on the platform built by the first connecting device 9 to provide support for the steel grille 5. A set of support components 9-2 needs to be arranged in the steel plate platform 9-1, that is, unequal angle steels (AH36) are added in the steel plate platform 9-1 every 0.5m to ensure the overall strength and rigidity of the connecting device 9 structure.

[0039] like Figure 6As shown, the second connection method between the steel grille 5 and the second floor board 7 is that the second floor board 7 of the lower bunk bed in other rooms and the steel grille 5 are arranged on the upper beam flange 22, and the steel grille 5 is flush with the bottom layer of the second floor board 7. The steel grille 5 and the second floor board 7 are connected by a second connecting device 10, and the height difference between the top layers of the two is adjusted by the second connecting device 10, which not only solves the problem of difficulty in the passage of the tool cart caused by the height difference between the two, but also ensures the overall strength and stability.

[0040] like Figure 7 As shown, the second connecting device 10 is arranged above the edge of the second deck 7, and the gentle slope formed by the unequal angle steel 10-1 is connected to the top layer of the steel grille 5. The gap between the unequal angle steel 10-1 and the second deck 7 is welded and sealed by the steel plate 10-2. Since the unequal angle steel 10-1 of fixed specifications cannot meet the height difference between the two, the short side of the unequal angle steel 10-1 needs to be properly cut so that the top of the unequal angle steel 10-1 is flush with the top surface of the steel grille 5.

[0041] like Figure 8 As shown, when the steel grating 5 is placed above the upper beam flange 22, for the stability of the overall structure, each side of the steel grating 5 must be supported, so the upper beam flange 22 and the steel grating 5 are connected by a fixing device 11. The fixing device 11 is composed of a saddle clamp 11-1, a locking bolt 11-2 and a locking nut 11-3. The saddle clamp 11-1 covers and fixes the steel grating 5 respectively, and the locking bolt 11-2 passes through the saddle clamp 11-1 and is screwed into the upper beam flange 22 and is fastened with a locking nut 11-3. The spacing of the fixing devices 11 is not greater than 800mm, and there is at least one fixing device 12 on each side, and a fixing device 11 is required to be set on each upper beam flange 22 under the steel grating 5 (there are no less than 2 fixing devices 11 on each beam flange 2), and each steel grating 5 has at least 4 fixing devices 11.

[0042] like Fig. 9 As shown, if there are no special circumstances, two steel grids 5 are placed centrally above the upper beam flange 22, and the distance between the two steel grids 5 is about 20 mm.

[0043] like Fig.10 As shown, if the equipment base plate 13 or other conditions occur, resulting in the steel grille 5 being placed on the upper beam flange 22 for a length less than 50 mm, it is necessary to set an additional support steel plate 12 fixed to the steel grille 5 and the upper beam flange 22 respectively under the steel grille 5, and the support steel plate 12 and the steel grille 5 are connected by a fixing device 11. The support steel plate 12 is made of unequal angle steel, welded at the connection between the upper beam flange 22 and the steel grille 5, and the weld surface is polished to provide sufficient support. A fixing device 11 is required to be set on each support steel plate 12 under the steel grille 5, and there are no less than 2 fixing devices 11 on each support steel plate 12.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An accident oil pit for an offshore wind farm booster module, comprising a plurality of I-beams below an oil-carrying device, wherein the I-beams are composed of a vertical beam web, an upper beam flange located at the top of the beam web, and a lower beam flange located at the bottom of the beam web, characterized in that: It also includes an upper steel grating and a lower first floor plate arranged below the oil-carrying equipment. The steel grating and the first floor plate are respectively fixed to the I-beam to form a hollow structure as an accident oil pit. The beam web divides the accident oil pit into a plurality of beam grids, and each of the beam grids is provided with a flow hole to enable the beam grids to communicate with each other.

2. The accident oil pit for an offshore wind farm booster module according to claim 1, characterized in that: The first plank is 6 mm thick and is sunken 300 mm.

3. The accident oil pit for an offshore wind farm booster module according to claim 1, characterized in that: The flow hole comprises a semicircular hole, a semicircular tube and a flat steel. A semicircular hole is opened on the web of the beam, and the semicircular tube and the flat steel pass through the semicircular hole.

4. The accident oil pit for an offshore wind farm booster module according to claim 1, characterized in that: When the second floor board is laid in other rooms, the connection method between the steel grille and the second floor board is that the second floor board is placed on the upper beam flange and the steel grille is a certain distance away from the upper beam flange, the steel grille is flush with the top layer of the second floor board, and the steel grille is connected to the second floor board through a first connecting device, the first connecting device includes a steel plate platform, the steel plate platform is an L-shaped structure and is welded to the beam web, and the steel grille is fixed on the steel plate platform.

5. The accident oil pit for boosting module of offshore wind farm according to claim 4, characterized in that: A support assembly is arranged in the steel plate platform. The support assembly adopts unequal angle steels. Unequal angle steels are added in the steel plate platform every 0.5m.

6. The accident oil pit for boosting module of offshore wind farm according to claim 1, characterized in that: When the second floor board is laid in other rooms, the connection method between the steel grille and the second floor board is that the second floor board and the steel grille are both arranged on the flange of the upper beam, the steel grille is flush with the bottom layer of the second floor board, and the steel grille is connected to the second floor board through a second connecting device, the second connecting device includes unequal angle steels and steel plates, the unequal angle steels are arranged above the edge of the second floor board, and the gentle slope formed by the unequal angle steels is connected to the top layer of the steel grille, and the gap between the unequal angle steels and the second floor board is welded and sealed by the steel plate.

7. The accident oil pit for an offshore wind farm booster module according to claim 6, characterized in that: When the steel grating is placed on the upper beam flange, the upper beam flange and the steel grating are connected by a fixing device, and the fixing device consists of a saddle clamp, an anti-loosening bolt and an anti-loosening nut. The saddle clamps respectively cover and fix the steel gratings, and the anti-loosening bolts pass through the saddle clamps and are screwed into the upper beam flange and are tightened with the anti-loosening nuts.

8. The accident oil pit for an offshore wind farm booster module according to claim 7, characterized in that: The spacing between the fixing devices is no more than 800 mm, there is at least one fixing device on each side of the steel grating, fixing devices are arranged on each upper beam flange under the steel grating, there are no less than 2 fixing devices on each upper beam flange, and each steel grating has at least 4 fixing devices.

9. The accident oil pit for boosting module of offshore wind farm according to claim 7, characterized in that: When the steel gratings are placed on the upper beam flange, two pieces of the steel gratings are placed centrally above the upper beam flange, and the distance between the two pieces of the steel gratings is 15 to 25 mm.

10. The accident oil pit for boosting module of offshore wind farm according to claim 7, characterized in that: If an equipment base plate is provided between the steel gratings and the equipment base plate is placed on the upper beam flange, resulting in the steel grating being placed on the upper beam flange for a length less than 50 mm, a supporting steel plate is provided below the steel grating, and the supporting steel plate is connected to the steel grating via a fixing device. The supporting steel plate is made of unequal angle steels, which are welded at the connection between the supporting steel plate and the upper beam flange and the steel grating. A fixing device is provided on each supporting steel plate under the steel grating, and there are no less than two fixing devices on each supporting steel plate.

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