CN219194627U

CN219194627U - Mud dewatering device for offshore drilling platform

Info

Publication number: CN219194627U
Application number: CN202223353278.6U
Authority: CN
Inventors: 孔秋平; 郭琼玲; 许万洪; 罗承浩; 郑添寿; 郑文明; 陈超凌
Original assignee: Fujian Sanchuan Offshore Wind Power Co ltd; Fujian Yongqiang Marine Technology Co ltd
Current assignee: Fujian Sanchuan Offshore Wind Power Co ltd; Fujian Yongqiang Marine Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-16
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to a mud dewatering device for an offshore drilling platform, which comprises a dosing tank connected with a mud pump; a hydration tank is arranged on one side adjacent to the dosing tank, and first liquid outlets are respectively formed in the bottom sides of the dosing tank and the hydration tank; a first liquid outlet valve is arranged in the liquid outlet; the bottoms of the dosing tank and the hydration tank are provided with mixed solution cavities; a second liquid outlet is formed in the bottom of the mixed solution cavity; a second liquid outlet valve is arranged in the second liquid outlet; the second liquid outlet is connected with the centrifugal machine through a pipeline; the center of the upper parts of the hydration tank and the dosing tank is provided with a first driving part. According to the utility model, the mixed solution cavities are arranged at the bottoms of the dosing tank and the hydration tank, and after the solutions in the two containers are fully stirred, the solutions enter the mixed solution cavities, and the flocculating agent and the slurry are further mixed by the stirring mechanism, so that the mixing uniformity degree is improved, and the subsequent centrifugal effect is further improved.

Description

Mud dewatering device for offshore drilling platform

Technical Field

The utility model relates to a mud dewatering device, in particular to a mud dewatering device for an offshore drilling platform.

Background

During offshore drilling operations, mud is one of the resources that can be recycled; however, various harmful substances such as heavy metals, alkali and the like are mixed in the rock stratum when the drill bit is drilled at sea, and the drill bit also has lubricating oil; when the harmful substances are mixed into the slurry, the slurry belongs to waste drilling fluid and cannot be directly used. Therefore, in the prior art, the slurry is generally mixed with the flocculant and the medicament and centrifuged, so that the slurry is subjected to solid-liquid separation. However, the above-mentioned devices in the prior art have the drawbacks: the double-dosing system is driven by adopting two motors, but in actual conditions, the stirring rates of the double systems are not greatly different, the double-dosing system is not required to be arranged in the mode, and the cost is seriously increased; secondly, before two solutions in the double system enter the centrifugal machine, the two solutions cannot be mixed and are only extracted independently, so that the mixing part of the two solutions is uniform, the subsequent centrifugal part is thorough, and the solid-liquid separation effect is poor.

Therefore, further improvements are needed.

Disclosure of Invention

In view of the above, the present utility model provides a slurry dewatering device for offshore drilling platform, which overcomes the defects in the prior art, reduces manufacturing cost, simplifies structural complexity, and improves solution mixing uniformity.

The mud dewatering device for offshore drilling platform includes one chemical adding tank connected to the mud pump; a hydration tank is arranged on one side adjacent to the dosing tank, and first liquid outlets are respectively formed in the bottom sides of the dosing tank and the hydration tank; a first liquid outlet valve is arranged in the liquid outlet; the bottoms of the dosing tank and the hydration tank are provided with mixed solution cavities; a second liquid outlet is formed in the bottom of the mixed solution cavity; a second liquid outlet valve is arranged in the second liquid outlet; the second liquid outlet is connected with the centrifugal machine through a pipeline; the centers of the upper parts of the hydration tank and the dosing tank are provided with a first driving part; a gear box is arranged at the bottom of the first driving part; output ends are respectively arranged on two sides of the gear box; the medicine adding tank and the hydration tank are respectively provided with a stirring component; the top end of the stirring assembly is provided with a transmission gear; the transmission gear is connected with the output end.

Preferably, first conveying pumps are arranged on the outer sides of the bottoms of the two first liquid outlets; a stirring mechanism is arranged in the mixed solution cavity; the side part of the mixed solution cavity is provided with a second driving part.

Preferably, the stirring mechanism comprises a main shaft; the axis of the main shaft is distributed along the length direction of the mixed solution cavity; one end of the main shaft is rotationally connected to the inner side wall of the mixed solution cavity; the other end is connected with the second driving part; the second driving part is a motor; the main shaft is provided with a plurality of stirring blades.

Preferably, a double-layer bracket is arranged between the upper parts of the dosing tank and the hydration tank; the first driving part is arranged on the surface of the double-layer bracket; the first driving part is a motor; the gear box is positioned at the lower side of the first driving part.

Preferably, the gear box comprises a driving gear connected with the output shaft of the first driving part; driven gears are arranged on two sides of the gear box; the driving gear and the driven gear are bevel gears meshed with each other.

Preferably, a driven shaft is arranged at the center of the driven gear; the driven shaft is provided with a first bevel gear; the main shaft is provided with a second bevel gear; the first bevel gear and the second bevel gear are meshed with each other.

The utility model has the following beneficial effects: firstly, the mixed solution cavities are arranged at the bottoms of the dosing tank and the hydration tank, and after the solutions in the two containers are fully stirred, the solutions enter the mixed solution cavities, and the flocculating agent and the slurry are further mixed through the stirring mechanism, so that the mixing uniformity degree is improved, and the subsequent centrifugal effect is further improved; and secondly, the stirring shafts in the dosing tank and the hydration tank are driven to rotate by a single motor, so that the energy consumption is reduced, and meanwhile, the purchase cost of the motor is also reduced.

Drawings

Fig. 1 is a schematic view of a part of the structure of the present utility model.

FIG. 2 is a schematic partial cross-sectional view of the present utility model.

Fig. 3 is a schematic view of the internal structure of the gear box.

In the figure: 1 is a dosing tank, 2 is a hydration tank, 3 is a mixed solution cavity, 4 is a first liquid outlet, 5 is a second liquid outlet, 6 is a first driving part, 7 is a gear box, 8 is a first conveying pump, 9 is a second driving part, 10 is a main shaft, 11 is a double-layer bracket, 12 is a driving gear, 13 is a driven gear, 14 is a driven shaft, 15 is a first bevel gear, 16 is a central shaft, and 17 is a second bevel gear.

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.

Terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, provided that the terms are not defined differently. It is to be understood that terms defined in commonly used dictionaries have meanings that are consistent with the meaning of the terms in the prior art.

Referring to fig. 1-3, a mud dewatering device for an offshore drilling platform comprises a dosing tank 1 connected with a mud pump; a hydration tank 2 is arranged on one side adjacent to the dosing tank 1, and first liquid outlets 4 are respectively formed in the bottom sides of the dosing tank 1 and the hydration tank 2; a first liquid outlet valve is arranged in the liquid outlet; the bottoms of the dosing tank 1 and the hydration tank 2 are provided with a mixed solution cavity 3; a second liquid outlet 5 is formed in the bottom of the mixed solution cavity 3; a second liquid outlet valve is arranged in the second liquid outlet 5; the second liquid outlet 5 is connected with the centrifugal machine through a pipeline; the center of the upper parts of the hydration tank 2 and the dosing tank 1 is provided with a first driving part 6; the bottom of the first driving part 6 is provided with a gear box 7; output ends are respectively arranged on two sides of the gear box 7; stirring components are respectively arranged in the dosing tank 1 and the hydration tank 2; the top end of the stirring assembly is provided with a transmission gear; the transmission gear is connected with the output end.

Further, a first delivery pump 8 is arranged outside the bottoms of the two first liquid outlets 4; a stirring mechanism is arranged in the mixed solution cavity 3; the side part of the mixed solution cavity 3 is provided with a second driving part 9.

Further, the stirring mechanism comprises a main shaft 10; the axis of the main shaft 10 is distributed along the length direction of the mixed solution cavity; one end of the main shaft 10 is rotatably connected to the inner side wall of the mixed solution cavity 3; the other end is connected with a second driving part 9; the second driving part 9 is a motor; the main shaft 10 is provided with a plurality of stirring blades.

Specifically, the main shaft 10 is horizontally and longitudinally distributed in the mixed solution cavity 3, and after the slurry and the flocculating agent in the dosing tank 1 and the hydration tank 2 enter, the slurry and the flocculating agent can be fully mixed in the mixed solution cavity 3, and the aim of uniform mixing is fulfilled under the action of the stirring mechanism.

Further, a double-layer bracket 11 is arranged between the upper parts of the dosing tank 1 and the hydration tank 2; the first driving part 6 is arranged on the surface of the double-layer bracket 11; the first driving part 6 is a motor; the gear box 7 is positioned below the first driving part 6.

Further, the gear box 7 comprises a driving gear 12 connected with the output shaft of the first driving part 6; driven gears 13 are arranged on two sides of the gear box; the driving gear 12 and the driven gear 13 are bevel gears meshed with each other.

Further, a driven shaft 14 is arranged at the center of the driven gear 13; the driven shaft 14 is provided with a first bevel gear 15; the stirring assembly includes a central shaft 16; the central shaft 16 is provided with a second bevel gear 17; the first bevel gear 15 and the second bevel gear 17 are engaged with each other.

Specifically, the first driving part 6 drives the driving gear 12 to rotate, so as to drive the driven gears 13 on two sides to rotate; since the axes of the driven gear 13 and the driving gear 12 are perpendicular to each other, the axes of the driven gears on both sides are perpendicular to the center shaft 16; so that when the driven gear rotates, the driven shaft 14 connected with the driven gear can be driven to rotate together with the first bevel gear 15; finally, the first bevel gear 15 drives the second bevel gear to rotate, so that the central shaft 16 rotates, and stirring is realized.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The mud dewatering device for offshore drilling platform includes one chemical adding tank connected to the mud pump; the adjacent one side of dosing tank is provided with hydration tank, its characterized in that: the bottom sides of the dosing tank and the hydration tank are respectively provided with a first liquid outlet; a first liquid outlet valve is arranged in the liquid outlet; the bottoms of the dosing tank and the hydration tank are provided with mixed solution cavities; a second liquid outlet is formed in the bottom of the mixed solution cavity; a second liquid outlet valve is arranged in the second liquid outlet; the second liquid outlet is connected with the centrifugal machine through a pipeline; the centers of the upper parts of the hydration tank and the dosing tank are provided with a first driving part; a gear box is arranged at the bottom of the first driving part; output ends are respectively arranged on two sides of the gear box; the medicine adding tank and the hydration tank are respectively provided with a stirring component; the top end of the stirring assembly is provided with a transmission gear; the transmission gear is connected with the output end.

2. The mud dewatering device for an offshore drilling platform according to claim 1, wherein: the outer sides of the bottoms of the two first liquid outlets are provided with first conveying pumps; a stirring mechanism is arranged in the mixed solution cavity; the side part of the mixed solution cavity is provided with a second driving part.

3. A mud dewatering device for an offshore drilling platform as claimed in claim 2, wherein: the stirring mechanism comprises a main shaft; the axis of the main shaft is distributed along the length direction of the mixed solution cavity; one end of the main shaft is rotationally connected to the inner side wall of the mixed solution cavity; the other end is connected with the second driving part; the second driving part is a motor; the main shaft is provided with a plurality of stirring blades.

4. A mud dewatering apparatus for an offshore drilling platform according to claim 3, wherein: a double-layer bracket is arranged between the upper parts of the dosing tank and the hydration tank; the first driving part is arranged on the surface of the double-layer bracket; the first driving part is a motor; the gear box is positioned at the lower side of the first driving part.

5. The mud dewatering device for an offshore drilling platform according to claim 4, wherein: the gear box comprises a driving gear connected with the output shaft of the first driving part; driven gears are arranged on two sides of the gear box; the driving gear and the driven gear are bevel gears meshed with each other.

6. The mud dewatering device for an offshore drilling platform according to claim 5, wherein: a driven shaft is arranged at the center of the driven gear; the driven shaft is provided with a first bevel gear; the stirring assembly comprises a central shaft; the central shaft is provided with a second bevel gear; the first bevel gear and the second bevel gear are meshed with each other.