Combustion gas turbine oil tank modular structure integrating waste heat recovery

Abstract

The utility model discloses a gas turbine fuel tank modular structure integrating waste heat recovery, which comprises a fuel tank body, a guide cylinder and a stepping motor, and a PLC (programmable logic controller) is fixedly mounted at the upper end of the fuel tank body. According to the utility model, the backflow pipe, the flow guide cylinder, the flow guide seat, the first guide pipe, the oil tank body, the temperature sensor, the PLC, the stepping motor, the worm, the worm gear, the rotating shaft, the second guide pipe, the heat exchange box, the water guide pipe, the flow guide cover, the fixed plate and the copper heat exchange pipe are matched with one another; the switching module and the heat exchange cooling module can form corresponding lubricating oil circulation paths on the oil tank body, and the circulation paths of the lubricating oil flowing back to the gas turbine can be switched according to the temperature of the lubricating oil in the oil tank body in the operation process of the gas turbine. And it is ensured that the lubricating oil can rapidly rise to the optimal temperature needed by lubrication in the initial operation process of the gas turbine.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine equipment technology, specifically a modular structure for a gas turbine fuel tank with integrated waste heat recovery. Background Technology

[0002] Gas turbines, as a highly efficient power equipment, are widely used in industries such as industry and power. During the operation of a gas turbine, the circulating lubrication process inside the oil tank often generates high temperatures. In the process of lubricating oil return, air cooling is usually used for heat dissipation. However, the heat of the lubricating oil cannot be effectively recovered and utilized during the lubricating oil cooling process, resulting in a large amount of heat being dissipated into the surrounding environment, thus causing a certain amount of energy waste. Utility Model Content

[0003] The purpose of this utility model is to provide a modular structure for a gas turbine oil tank with integrated waste heat recovery, which has the advantages of being able to cool the returning lubricating oil while recovering and utilizing the heat of the lubricating oil during the cooling process.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a modular structure for a gas turbine fuel tank with integrated waste heat recovery, comprising a fuel tank body, a guide tube, and a stepper motor. A PLC controller is fixedly installed at the upper end of the fuel tank body, and a temperature sensor is fixedly installed at the lower end of the fuel tank body. A heat exchange box is fixedly installed on the top of the fuel tank body via a pipe. A fixing plate is fixedly installed on the top of the heat exchange box. Guide tubes are fixedly connected to both ends of the top of the fixing plate. A water guide pipe is fixedly connected to the top of the guide tube. The two ends of the fixing plate... A copper heat exchange tube is fixedly connected between the two ends of the copper heat exchange tube and the flow guide shrouds on both sides. A second conduit is fixedly installed between the right side of the heat exchange box and the left side of the flow guide cylinder. A first conduit is fixedly installed between the right side of the flow guide cylinder and the upper right side of the oil tank body. A return pipe is fixedly connected to the front surface of the flow guide cylinder. A rotating shaft is movably connected to the top of the flow guide cylinder through a bearing. A worm gear is fixedly installed on the top of the rotating shaft. A flow guide seat is fixedly connected to the bottom of the rotating shaft. A worm is fixedly installed at the output end of the stepper motor. The worm meshes with the worm gear.

[0005] As a preferred embodiment, a protective cover is fixedly installed between the top of the outer surface of the guide tube and the left side of the stepper motor, and the left side of the worm gear is movably connected to the left side of the inner cavity of the protective cover via a bearing.

[0006] As a preferred embodiment, the surface of the flow guide seat is movably connected to the inner cavity of the flow guide cylinder, and a rubber sealing gasket is fixedly installed on the surface of the flow guide seat, the surface of the rubber sealing gasket being movably connected to the inner cavity of the flow guide cylinder.

[0007] As a preferred embodiment, a second guide plate is fixedly installed at the bottom of the heat exchange box cavity, and a first guide plate is fixedly installed at the bottom of the fixed plate, with the second guide plate and the first guide plate being installed alternately.

[0008] As a preferred embodiment, the number of the second guide vanes is two, and the number of the first guide vanes is three.

[0009] As a preferred embodiment, the number of copper heat exchange tubes is ten, and the distance between any two adjacent copper heat exchange tubes is equal.

[0010] As a preferred embodiment, an output pipe is fixedly connected to the lower right side of the fuel tank body.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention, through the coordinated action of a return pipe, a guide tube, a guide seat, a first guide tube, an oil tank body, a temperature sensor, a PLC controller, a stepper motor, a worm gear, a worm wheel, a rotating shaft, a second guide tube, a heat exchange box, a water guide pipe, a guide shroud, a fixing plate, and copper heat exchange tubes, can form corresponding lubricating oil flow path switching modules and heat exchange and cooling modules on the oil tank body. During the operation of the gas turbine, the flow path of the lubricating oil returning to the gas turbine can be switched according to the temperature of the lubricating oil inside the oil tank body. This ensures that the lubricating oil can quickly rise to the optimal temperature required for lubrication during the initial operation of the gas turbine. At the same time, when the lubricating oil is at the optimal temperature, the high-temperature lubricating oil returning to the gas turbine can be effectively cooled through heat exchange, and the heat in the returning lubricating oil can be recovered and utilized, effectively reducing energy waste. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a front sectional view of the heat exchanger box of this utility model;

[0015] Figure 3 This is a schematic diagram of the flow guide seat structure of this utility model;

[0016] Figure 4 This is a top view of the guide tube structure of this utility model.

[0017] In the diagram: 1. Oil tank body; 2. Temperature sensor; 3. PLC controller; 4. Output pipe; 5. Return pipe; 6. First conduit; 7. Flow guide tube; 8. Heat exchange box; 9. Fixing plate; 10. Flow guide cover; 11. Water guide pipe; 12. First flow guide plate; 13. Second flow guide plate; 14. Copper heat exchange tube; 15. Second conduit; 16. Rubber sealing gasket; 17. Flow guide seat; 18. Rotating shaft; 19. Worm gear; 20. Stepper motor; 21. Worm; 22. Protective cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] The components in this application, such as the oil tank body 1, temperature sensor 2, PLC controller 3, output pipe 4, return pipe 5, first conduit 6, guide tube 7, heat exchange box 8, fixing plate 9, guide shroud 10, water guide pipe 11, first guide plate 12, second guide plate 13, copper heat exchange tube 14, second conduit 15, rubber sealing gasket 16, guide seat 17, rotating shaft 18, worm gear 19, stepper motor 20, worm 21, and protective cover 22, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0021] Example 1:

[0022] Please see Figures 1-4As shown, this utility model provides a modular structure for a gas turbine fuel tank with integrated waste heat recovery, including a fuel tank body 1, a guide tube 7, and a stepper motor 20. A PLC controller 3 is fixedly installed at the upper end of the fuel tank body 1, and a temperature sensor 2 is fixedly installed at the lower end of the fuel tank body 1. A heat exchange box 8 is fixedly installed on the top of the fuel tank body 1 through a pipe. A fixing plate 9 is fixedly installed on the top of the heat exchange box 8. Guide shrouds 10 are fixedly connected to both ends of the top of the fixing plate 9. A water guide pipe 11 is fixedly connected to the top of the guide shrouds 10. A copper heat exchange tube is fixedly connected between the two ends of the fixing plate 9. 14. The two ends of the copper heat exchange tube 14 are connected to the flow guide shrouds 10 on both sides. A second conduit 15 is fixedly installed between the right side of the heat exchange box 8 and the left side of the flow guide tube 7. A first conduit 6 is fixedly installed between the right side of the flow guide tube 7 and the upper right side of the oil tank body 1. A return pipe 5 is fixedly connected to the front surface of the flow guide tube 7. A rotating shaft 18 is movably connected to the top of the flow guide tube 7 through a bearing. A worm gear 19 is fixedly installed on the top of the rotating shaft 18. A flow guide seat 17 is fixedly connected to the bottom of the rotating shaft 18. A worm 21 is fixedly installed at the output end of the stepper motor 20. The worm 21 meshes with the worm gear 19.

[0023] In this technical solution, the return pipe 5 connects to the lubricating oil discharge line of the gas turbine, and the two sets of water guide pipes 11 connect to the external water supply line and hot water recovery line. During the gas turbine startup, the returning lubricating oil flows through the return pipe 5 into the guide cylinder 7, and simultaneously, under the guidance of the guide seat 17, it flows back through the first conduit 6 to the oil tank body 1. Since the lubricating oil needs preheating to reach its optimal lubrication state during the initial startup phase of the gas turbine, the heat exchanger 8 is not yet operational. Simultaneously, the temperature sensor 2 detects the lubricating oil temperature inside the oil tank body 1 and transmits the data to the PLC controller 3. The detected temperature is compared with the preset switching temperature threshold to determine whether a switch is needed. When a switch is needed, the PLC controller 3 outputs a control to the stepper motor 20. The stepper motor 20 drives the worm gear 21 to rotate according to the preset number of revolutions. The rotation of the worm gear 21 drives the worm wheel 19, the rotating shaft 18, and the guide seat 17 to rotate until the guide seat 17 can rotate 90 degrees. This allows the lubricating oil to flow back to the inside of the oil tank body 1 through the second conduit 15, the heat exchange box 8, and the pipeline. At the same time, as the high-temperature lubricating oil flows through the heat exchange box 8, it can quickly exchange heat with the water flowing between the water guide pipe 11, the guide cover 10, the fixed plate 9, and the copper heat exchange tube 14, thereby increasing the temperature of the water and allowing it to be recycled through the hot water recovery pipeline.

[0024] Example 2:

[0025] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, a protective cover 22 is fixedly installed between the top of the outer surface of the guide tube 7 and the left side of the stepper motor 20. The left side of the worm gear 21 is movably connected to the left side of the inner cavity of the protective cover 22 through a bearing. The surface of the guide seat 17 is movably connected to the inner cavity of the guide tube 7. A rubber sealing gasket 16 is fixedly installed on the surface of the guide seat 17. The surface of the rubber sealing gasket 16 is movably connected to the inner cavity of the guide tube 7. A second guide plate 13 is fixedly installed at the bottom of the inner cavity of the heat exchange box 8. A first guide plate 12 is fixedly installed at the bottom of the fixed plate 9. There are two second guide plates 13 and three first guide plates 12. The second guide plates 13 and the first guide plates 12 are installed alternately. There are ten copper heat exchange tubes 14, and the distance between two adjacent copper heat exchange tubes 14 is equal. An output pipe 4 is fixedly connected to the lower right side of the oil tank body 1.

[0026] In this technical solution, the protective cover 22 can support the stepper motor 20 and the worm 21, and protect the area around the worm 21 and the worm wheel 19. The rubber sealing gasket 16 effectively improves the sealing effect between the guide seat 17 and the guide cylinder 7. The second guide plate 13 and the first guide plate 12 can guide the lubricating oil flowing inside the heat exchange box 8, so that the lubricating oil can have sufficient contact and heat exchange with the copper heat exchange tube 14. The output pipe 4 facilitates the connection between the oil tank body 1 and the lubricating oil pump input end of the gas turbine.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An integrated heat recovery gas turbine oil tank modular structure comprising an oil tank body (1), a flow guide (7) and a stepper motor (20), characterized in that: The upper end of the oil tank body (1) is fixedly installed with a PLC controller (3), the lower end of the oil tank body (1) is fixedly installed with a temperature sensor (2), the top of the oil tank body (1) is fixedly installed with a heat exchange tank (8) through a pipeline, the top of the heat exchange tank (8) is fixedly installed with a fixed plate (9), both ends of the top of the fixed plate (9) are fixedly connected with a flow guide cover (10), the top of the flow guide cover (10) is fixedly connected with a water guide pipe (11), both ends of the fixed plate (9) are fixedly connected with a copper heat exchange pipe (14), both ends of the copper heat exchange pipe (14) are communicated with the flow guide cover (10) on both sides, the right side of the heat exchange tank (8) and the left side of the flow guide cylinder (7) are fixedly installed with a second guide pipe (15), the right side of the flow guide cylinder (7) and the upper end of the right side of the oil tank body (1) are fixedly installed with a first guide pipe (6), the front surface of the flow guide cylinder (7) is fixedly connected with a return pipe (5), the top of the flow guide cylinder (7) is movably connected with a rotating shaft (18) through a bearing, the top of the rotating shaft (18) is fixedly installed with a worm wheel (19), the bottom of the rotating shaft (18) is fixedly connected with a flow guide seat (17), the output end of the stepping motor (20) is fixedly installed with a worm (21), and the worm (21) is engaged with the worm wheel (19).

2. An integrated heat recovery gas turbine oil tank modular structure according to claim 1, characterized in that: The top of the outer surface of the flow guide cylinder (7) and the left side of the stepping motor (20) are fixedly installed with a protective cover (22), and the left side of the worm (21) is movably connected to the left side of the inner cavity of the protective cover (22) through a bearing.

3. The integrated heat recovery gas turbine oil tank modular structure of claim 1, wherein: The surface of the flow guide seat (17) is movably connected to the inner cavity of the flow guide cylinder (7), the surface of the flow guide seat (17) is fixedly installed with a rubber sealing gasket (16), and the surface of the rubber sealing gasket (16) is movably connected to the inner cavity of the flow guide cylinder (7).

4. The integrated heat recovery gas turbine oil tank modular structure of claim 1, wherein: The bottom of the inner cavity of the heat exchange tank (8) is fixedly installed with a second flow guide plate (13), and the bottom of the fixed plate (9) is fixedly installed with a first flow guide plate (12).

5. An integrated heat recovery gas turbine oil tank modular structure according to claim 4, characterized in that: The number of the second flow guide plate (13) is two, the number of the first flow guide plate (12) is three, and the second flow guide plate (13) and the first flow guide plate (12) are alternately installed.

6. An integrated heat recovery gas turbine oil tank modular structure according to claim 1, characterized in that: The number of the copper heat exchange pipe (14) is ten, and the distance between adjacent two copper heat exchange pipes (14) is equal.

7. The integrated heat recovery gas turbine oil tank modular structure of claim 1, wherein: The lower end of the right side of the oil tank body (1) is fixedly connected with an output pipe (4).

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