Column platform with temperature difference energy power generation device and drainage

Abstract

The present invention discloses a column-type platform with a temperature difference energy power generation device for drainage, comprising a platform body and a superstructure deck, characterized in that: a mixed water tank is provided between the platform body and the superstructure deck, the mixed water tank is provided with a water inlet and a water outlet, the water inlet is connected to the drainage port of the temperature difference energy power generation device, the water outlet is connected to a drainage pipe or a central well, and the bottom of the central well or drainage pipe is an open structure. The column-type platform proposed in this scheme solves the problem of seawater discharge of the first generation or second generation column-type platform when used for temperature difference energy power generation, and avoids seawater temperature pollution.

Description

Technical Field

[0001] The present invention relates to a first-generation or second-generation column-type platform, and in particular to a first-generation or second-generation column-type platform with a temperature difference energy power generation device for drainage. Background Art

[0002] When temperature difference energy is used to generate electricity, the power generation device will produce a large amount of seawater with lower temperature. If it is discharged directly, it will cause temperature pollution. The low-temperature seawater produced by the power generation device needs to be discharged to a specific temperature layer.

[0003] Thermoelectric power generation equipment draws cold seawater (4°C) from a depth of 1,000 meters and simultaneously draws warmer seawater (over 20°C) from the ocean. This temperature difference generates electricity, raising the temperature of the cold seawater by approximately 7°C and lowering it by approximately 20°C. The two then mix, creating a cooler seawater temperature of approximately 14°C for discharge. Direct discharge to the sea surface would cause temperature pollution, so a new method is needed to discharge the cooler seawater, at approximately 14°C, into a seawater layer with the same temperature.

[0004] Traditional column platforms, such as the first and second generation column platforms, are designed based on the characteristics of oil and gas development. They are not very compatible with thermoelectric power generation technology. Technical improvements are needed to adapt the first and second generation column platforms to the needs of thermoelectric power generation technology to discharge seawater. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to enable a first-generation or second-generation column-type platform to meet the demand for low-temperature seawater discharge after a temperature difference energy power generation device is arranged on the platform.

[0006] In order to solve the above technical problems, the column-type platform with a temperature difference energy power generation device drainage of the present invention includes a platform body, a mixing water tank is provided on the upper part of the platform body, and the mixing water tank is provided with a water inlet and a water outlet, the water inlet is connected to the drainage port of the temperature difference energy power generation device, and the water outlet is connected to a drainage pipe or a central well, and the bottom of the central well or the drainage pipe is an open structure.

[0007] In the above technical solution, the mixed water tank includes a bow and a stern, and there is a continuous slope between the bow and the stern, the bow is at the highest point of the slope elevation, and the stern is at the lowest point of the slope elevation.

[0008] In the above technical solution, the drainage pipe is arranged in the platform body, and the drainage pipe is arranged parallel to the platform body.

[0009] The above technical solution further includes a water pump, the water inlet of the water pump is arranged on the outside of the platform body, and the water outlet of the water pump is connected to the water inlet of the mixing water tank.

[0010] In the above technical solution, the mixing water tank includes a front mixing tank and a rear mixing tank, and the front mixing tank and the rear mixing tank are connected by a connecting water tank, and the cross-section of the connecting water tank is smaller than the cross-section of the rear mixing tank and / or the front mixing tank.

[0011] In the above technical solution, the water outlet of the water pump and the drain outlet of the temperature difference energy power generation device form a total drain outlet through a Y-type confluence valve, and the total drain outlet is connected to the water inlet of the mixing water tank or the central well.

[0012] In the above technical solution, a drainage tank is provided at the tail end of the rear mixing tank, the cross section of the drainage tank is smaller than that of the rear mixing tank, the water outlet is provided on the drainage tank; the water inlet is provided at the front end of the front mixing tank.

[0013] Another column-type platform solution with drainage for the temperature difference energy power generation device does not have a mixing water tank. The drainage outlet of the temperature difference energy power generation device and the water outlet of the water pump are directly connected to the central well, or the water outlet of the water pump and the drainage outlet of the temperature difference energy power generation device are connected to the central well through a Y-type confluence valve to form a total drainage outlet, and the total drainage outlet is connected to the central well.

[0014] The column-type platform with drainage function for the thermoelectric power generation device proposed in this scheme solves the problem of discharging relatively cold seawater of about 14°C from the thermoelectric power generation device when the first or second generation column-type platform is used for thermoelectric power generation, thereby avoiding seawater temperature pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a perspective structural diagram of the main body of the first-generation column-type platform.

[0016] Figure 2 A perspective structural diagram of the mixing water tank set up for the first-generation column-type platform.

[0017] Figure 3 A perspective structural diagram of the mixing water tank and drainage pipes for the first generation column-type platform.

[0018] Figure 4 This is a perspective structural diagram of the main body of the second-generation column-type platform.

[0019] Figure 5 A perspective structural diagram of the hybrid water tank set up for the second-generation column-type platform.

[0020] Figure 6 A perspective structural diagram of the mixing water tank and drainage pipes for the second-generation column-type platform.

[0021] Figure 7 This is a three-dimensional structural diagram of the mixing water tank.

[0022] Figure 8 This is a partial enlarged view of drainage through the central well.

[0023] Figure 9 This is a partial structural diagram of drainage through a drainage pipe. DETAILED DESCRIPTION

[0024] Combine Figures 1 to 9 The column platform of this scheme is described in detail.

[0025] See also Figure 1 and Figure 4 The main body of both the first-generation and second-generation pillar platforms consists of a hard cabin, a middle section, and a soft cabin. The main difference between the second-generation pillar platform and the first-generation pillar platform is the use of a truss as the middle section to connect the hard and soft cabins. The hard cabin structure of the two is the same.

[0026] See also Figure 2 、 3 , 5 and 6, this solution is explained in detail using the first and second generation column platforms as examples.

[0027] This column-type platform with a thermoelectric power generation device for drainage comprises a platform body 1 and a superstructure deck, on which the thermoelectric power generation device is mounted. A mixing water tank 2 is located above the platform body 1, with its outer edges aligned with those of the platform body 1.

[0028] The mixing water tank 2 can be a single unit or a combination of multiple tanks. When multiple tanks are used, the multiple tanks are interconnected. A mixing water tank 2 employing multiple tanks includes a front mixing tank 21 and a rear mixing tank 23. The front mixing tank 21 and the rear mixing tank 23 are connected by a connecting tank 22. The cross-section of the connecting tank is smaller than that of both the rear mixing tank and the front mixing tank.

[0029] Whether a single-compartment mixing tank 2 is used or a multi-compartment tank 2, both have distinct features: a bow 211 and a stern 231. The tank bottom has a continuous slope, with the bow 211 at the highest point and the stern 231 at the lowest point. The bow 211 is at least partially higher than the stern 231. Colder seawater, approximately 14°C, enters the mixing tank 2 from the bow 211 and flows under gravity to the stern 231. A drainage tank 24 is located at the stern 231 and is connected to the central well 11 or the drain pipe 3. This cooler seawater, approximately 14°C, is discharged into the central well 11 or the drain pipe 3. Over time, the entire central well 11 or the drain pipe 3 is filled with cooler seawater, eventually draining into the sea through the bottom of the central well 11 or the drain pipe 3.

[0030] When a mixing water tank 2 composed of multiple compartments is used, the narrowing of the connecting water tank 22 will form a water accumulation, which is more conducive to the mixing of seawater.

[0031] When the mixing water tank 2 utilizes multiple compartments, the bow 211 is located at the front of the forward mixing tank 21, and the stern 231 is located at the rear of the rear mixing tank 23. The mixing water tank's water inlet is located at the bow 211, and the mixing water tank's water outlet is located at the stern 231. When a drainage tank 24 is provided, the mixing water tank's water outlet is located on the drainage tank 24, and the cross-section of the drainage tank is smaller than that of the rear mixing tank. The mixing water tank's water inlet is connected to the drain outlet of the thermoelectric power generation device, and the mixing water tank's water outlet is connected to the drain pipe 3 or the central well 11. The bottom of the central well 11 or the drain pipe 3 is connected to the seawater.

[0032] The drain pipe 3 is vertically installed inside the platform body 1. The drain pipe 3 can be installed in the central well 11 or in the cofferdam surrounding the central well 11. The top of the drain pipe 3 is connected to the stern 231 or the drainage tank 24, and the bottom extends to the bottom of the platform's continuous column and communicates with the sea, thereby draining the water in the mixed water tank 2 into the sea.

[0033] In some areas where temperature pollution requirements are less stringent, the lower-temperature seawater after thermoelectric power generation can be directly discharged into the central well 11 or drain pipe 3 with the higher-temperature seawater at the sea surface, where it mixes and is then discharged through the bottom of the moon pool. However, in areas where temperature pollution requirements are more stringent, this direct operation is difficult to meet, primarily because the temperature at the bottom of the central well 11 or drain pipe 3 is higher than the cooler seawater, which is approximately 14°C. In this case, higher-temperature seawater must be drawn proportionally from the sea surface and discharged into the mixing tank 2. Within the mixing tank 2, the seawater is mixed to a specific temperature before being discharged into the central well 11 or drain pipe 3. A pump is installed at the sea surface outside the platform 1. The pump's outlet and the thermoelectric power generation device's outlet are connected to a Y-shaped manifold valve to form a combined outlet. This combined outlet is then connected to the drain pipe 3 or central well 11 for drainage. The two seawaters are mixed in the mixing tank 2 and then discharged directly into the drain pipe 3 or central well 11, where they are then discharged through the bottom of the drain pipe 3 or central well 11.

[0034] The above structural design is applicable to both the first-generation column platform and the second-generation column platform. Note that the second-generation column platform has a truss structure. Generally speaking, the bottom of the central well 11 is closer to the sea surface, and the temperature of the seawater layer is higher. When mixing seawater, more water needs to be extracted from the sea surface with a higher temperature.

[0035] The thermoelectric power generation device draws deep seawater from its intake port via a cold water pipe, located within central well 11. The pipe's top is secured by buoys, and its bottom is secured by tensioned mooring lines. For both first-generation and second-generation spar platforms, the cold water pipe can be designed to pass through the hard tank, intermediate section, and soft tank, or other designs.

Claims

1. A column-type platform with a temperature difference energy power generation device for drainage, comprising a platform body, characterized in that: A mixing water tank is provided on the upper part of the platform body, and the mixing water tank is provided with a water inlet and a water outlet, the water inlet is connected to the drain outlet of the temperature difference energy power generation device, and the water outlet is connected to the drain pipe or the central well, and the bottom of the central well or the drain pipe is an open structure; The mixed water tank comprises a bow and a stern, and there is a continuous slope between the bow and the stern, the bow is at the highest elevation of the slope, and the stern is at the lowest elevation of the slope; The mixing water tank comprises a front mixing tank and a rear mixing tank, and the front mixing tank and the rear mixing tank are connected via a connecting water tank, and a cross section of the connecting water tank is smaller than a cross section of the rear mixing tank and / or the front mixing tank.

2. The column-type platform with drainage of the temperature difference energy power generation device according to claim 1, characterized in that: The drainage pipe is arranged in the platform body, and the drainage pipe is arranged parallel to the platform body.

3. The column-type platform with drainage of the temperature difference energy power generation device according to claim 1, characterized in that: It also includes a water pump, the water inlet of the water pump is arranged outside the platform body, and the water outlet of the water pump is connected to the water inlet of the mixing water tank.

4. The column-type platform with drainage of the temperature difference energy power generation device according to claim 3, characterized in that: The water outlet of the water pump and the drain outlet of the temperature difference energy power generation device form a total drain outlet through a Y-type confluence valve, and the total drain outlet is connected to the water inlet of the mixing water tank or the central well.

5. The column-type platform with drainage of the temperature difference energy power generation device according to claim 1, characterized in that: A drainage compartment is arranged at the tail end of the rear mixing compartment. The cross section of the drainage compartment is smaller than that of the rear mixing compartment. The water outlet is arranged on the drainage compartment.

6. A column-type platform with a temperature difference energy power generation device for drainage, comprising a temperature difference energy power generation device and a water pump, characterized in that: The drain outlet of the temperature difference energy power generation device and the water outlet of the water pump are connected to the central well, or the water outlet of the water pump and the drain outlet of the temperature difference energy power generation device form a total drain outlet through a Y-type confluence valve, and the total drain outlet is connected to the central well.

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