A spray device for cooling gas inlet air of a gas turbine

Abstract

This invention relates to the field of gas turbine technology, and more particularly to a sprayer for cooling gas turbine intake air. The sprayer includes a housing with mounting holes on both outer walls of the housing. A rotating tube is movably installed through each mounting hole. A first fixing rod is arranged in a ring at equal intervals on one outer wall of the housing, and an exhaust pipe is installed at the end of each first fixing rod. One end of the exhaust pipe is located within the rotating tube. A second fixing rod is arranged in a ring at equal intervals on the other outer wall of the housing, and an intake pipe is installed at the end of each second fixing rod. One end of the intake pipe is located within the rotating tube. This invention effectively increases the contact area and contact time between the gas carrier and the spray water, allowing the gas to be fully cooled. Furthermore, the spray water can act evenly on the outer surface of the gas carrier, resulting in more uniform and rapid cooling and better performance.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and more particularly to a spray device for cooling and reducing the temperature of gas turbine inlet air. Background Technology

[0002] A gas turbine unit's structure mainly consists of the following parts: intake chamber, gas generator section, combustion chamber, compressor turbine, power turbine, power shaft, and generator set. The main process of a gas turbine unit is as follows: the compressor draws in natural air and compresses it to a certain pressure and temperature. This air is then mixed with a specific ratio of fuel gas and enters the combustor, where it is burned in a combustion chamber made of special materials to become high-temperature gas. Subsequently, the gas enters the compressor turbine section, where it expands and performs work, driving the compressor and power turbine to rotate. At this point, the compressor rotation consumes only a small portion of the work; the majority of the surplus power is used to drive the generator set or mechanically drive the unit. From the above working process of the gas turbine unit, we can see that the operating principle of the gas turbine unit is that fuel gas at a certain pressure is fully mixed with air (mainly oxygen), and the chemical energy after combustion is converted into kinetic energy to drive the generator set or other mechanical units. Therefore, the higher the air density and oxygen content entering the gas turbine, the higher the combustion efficiency and the greater the output power of the gas turbine, that is, the greater the power generation or mechanical drive equipment output power. However, when the outdoor temperature is high, the air density is low and the oxygen content is reduced, which causes the combustion temperature of the gas turbine unit to be low, the efficiency to decrease, and the corresponding output power to decrease. Therefore, the power generation or mechanical drive power will be greatly reduced. So, when the outdoor temperature is high, the air needs to be cooled to increase the oxygen content in the air.

[0003] A search revealed Chinese patent CN217582313U, which discloses a spray device for cooling the intake air of a gas turbine. The device includes a water supply tank and a main spray pipe shaped like an inverted L, installed on the bottom side of the tank. Several evenly spaced and parallel spray branch pipes are connected to the outer wall of the main spray pipe. Each spray branch pipe has several evenly spaced mounting screw holes at its top, each communicating with the interior of the branch pipe. This gas turbine intake air cooling spray device has certain shortcomings: it primarily uses a spray structure to spray the air duct, but the airflow rate within the duct is relatively high, resulting in poor cooling performance. Therefore, there is an urgent need to design a gas turbine intake air cooling spray device to address these issues. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies in the existing technology by proposing a spray device for cooling the intake air of a gas turbine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sprayer for cooling the intake air of a gas turbine includes a housing. Mounting holes are provided on both outer walls of the housing, and a rotating tube is movably installed through each mounting hole. A first fixing rod is arranged in a ring at equal intervals on one outer wall of the housing, and an exhaust pipe is provided at the end of each first fixing rod. One end of the exhaust pipe is located within the rotating tube. A second fixing rod is arranged in a ring at equal intervals on the other outer wall of the housing, and an intake pipe is provided at the end of each second fixing rod. One end of the intake pipe is located within the rotating tube. Cylindrical tubes are fixedly installed on the outer wall of the rotating tube at equal intervals. First drive boxes are also fixedly installed on the inner walls of both sides of the housing. The first drive box and the second drive box are provided with fan blades arranged in a ring at equal intervals on the outer wall of the rotating tube, and the fan blades are respectively located in the first drive box and the second drive box. A water tank is provided on the top outer wall of the housing, and a submersible pump is provided in the water tank. A liquid guide pipe is provided at the liquid guide end of the submersible pump, and the end of the liquid guide pipe is connected to the first drive box. The first drive box and the second drive box are connected by a connecting pipe. A fixed pipe is provided at the end of the second drive box away from the connecting pipe. A chiller unit is provided on the bottom outer wall of the housing. The chiller unit is connected to the housing by a return pipe. The chiller unit and the water tank are connected by a delivery pipe. The housing also includes:

[0007] A flow guiding mechanism, which is disposed in a cylinder, is used to guide the airflow entering the rotating tube into the cylinder;

[0008] A spraying mechanism is disposed outside the connecting pipe and the fixed pipe, and is used to spray the outside of the cylinder.

[0009] As a further embodiment of the present invention: the flow guiding mechanism includes baffles evenly distributed in the rotating tube, and the baffles and the cylinder are corresponding to each other. The cylinder is also provided with a partition. A gas supply pipe penetrating the rotating tube is provided on one side of the baffle, and the end of the gas supply pipe is located on one side of the partition. A gas outlet pipe penetrating the rotating tube is provided on the other side of the baffle, and the end of the gas outlet pipe is located on the other side of the partition.

[0010] As a further embodiment of the present invention: the spraying mechanism includes a spraying pipe disposed on the outer wall of the connecting pipe and the fixed pipe, the spraying pipe being located between adjacent cylinders, and spray nozzles evenly distributed on both sides of the outer wall of the spraying pipe, and the diameter of the spray nozzles gradually decreasing from the connecting end of the spraying pipe to the other end of the spraying pipe.

[0011] As a further embodiment of the present invention: a rubber ring is fixedly provided in the mounting hole, and the rubber ring is sleeved on the outside of the rotating tube.

[0012] As a further embodiment of the present invention: both outer walls of the box are provided with connecting rods that are evenly spaced and distributed in a ring, and the ends of the connecting rods are provided with support cylinders, and the ends of the rotating tubes are rotatably disposed in the support cylinders.

[0013] As a further aspect of the present invention: both the submersible pump and the chiller unit are connected to a switch via wires, and the switch is electrically connected to a controller.

[0014] As a further embodiment of the present invention: the inner wall of the cylinder is provided with support rods that are evenly distributed in a ring, and the ends of the support rods are connected to the outer wall of the rotating tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention provides a sprayer for cooling the intake air of a gas turbine. The gas requiring cooling can be introduced into a rotating tube through an intake pipe, and then into a cylindrical cavity under the action of a guide mechanism. At this point, a submersible pump extracts cold water from a tank, which is then introduced into a first drive box through a guide pipe, then into a second drive box through a connecting pipe, and finally into a fixed pipe. The cold water entering the connecting and fixed pipes is sprayed onto the outside of the cylindrical cavity by a spraying mechanism, thereby cooling the gas inside the cylinder. Furthermore, when the cold water enters the first and second drive boxes, it drives the fan blades to rotate, which in turn drives the rotating tube to rotate. The rotating pipe drives the cylinder to rotate, allowing the cold water sprayed by the spray mechanism to act evenly on the outer surface of the cylinder, resulting in better cooling. The cold water sprayed onto the outer surface of the cylinder falls to the bottom of the tank and then flows back into the chiller unit through the return pipe. After being recooled by the chiller unit, it can be transported back to the water tank through the delivery pipe, allowing the cold water to be recycled. This structure effectively increases the contact area and contact time between the gas carrier and the spray water, allowing the gas to be fully cooled. The spray water can also act evenly on the outer surface of the gas carrier, making the cooling more uniform and faster, resulting in better performance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of a spray device for cooling the intake air of a gas turbine, provided in an embodiment of the present invention.

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram;

[0019] Figure 3 This is a schematic diagram of the flow guiding mechanism of a sprayer for cooling the intake air of a gas turbine, provided in an embodiment of the present invention.

[0020] Figure 4This is a schematic diagram of the cylindrical structure of a sprayer for cooling the intake air of a gas turbine, provided in an embodiment of the present invention.

[0021] Figure 5 This is an enlarged schematic diagram of the flow guiding mechanism of a sprayer for cooling the intake air of a gas turbine, provided in an embodiment of the present invention.

[0022] In the diagram: 1-box body, 2-rotating pipe, 3-exhaust pipe, 4-first fixed rod, 5-conveying pipe, 6-fixed pipe, 7-flow guiding mechanism, 8-water tank, 9-submersible pump, 10-liquid guiding pipe, 11-cylinder, 12-first drive box, 13-air inlet pipe, 14-fan blade, 15-connecting pipe, 16-return pipe, 17-chiller unit, 18-spraying mechanism, 19-spraying pipe, 20-spray head, 21-second drive box, 22-second fixed rod, 23-rubber ring, 24-connecting rod, 25-support cylinder, 26-baffle, 27-partition, 28-air supply pipe, 29-air outlet pipe, 30-support rod. Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a sprayer for cooling the intake air of a gas turbine, comprising a housing 1. Mounting holes are provided on both outer walls of the housing 1, and a rotating pipe 2 is movably disposed through each mounting hole. A first fixing rod 4 is provided on one outer wall of the housing 1 in a circular arrangement at equal intervals, and an exhaust pipe 3 is provided at the end of the first fixing rod 4. One end of the exhaust pipe 3 is disposed in the rotating pipe 2. A second fixing rod 22 is provided on the other outer wall of the housing 1 in a circular arrangement at equal intervals, and an air inlet pipe 13 is provided at the end of the second fixing rod 22. One end of the air inlet pipe 13 is disposed in the rotating pipe 2. Cylindrical tubes 11 are fixedly disposed on the outer wall of the rotating pipe 2 at equal intervals. A first drive box 12 and a... are also fixedly disposed on the inner walls of both sides of the housing 1. The second drive box 21 has fan blades 14 evenly spaced in a ring on the outer wall of the rotating tube 2, and the fan blades 14 are located in the first drive box 12 and the second drive box 21 respectively. A water tank 8 is installed on the top outer wall of the housing 1, and a submersible pump 9 is installed in the water tank 8. A liquid guide pipe 10 is installed at the liquid guide end of the submersible pump 9, and the end of the liquid guide pipe 10 is connected to the first drive box 12. The first drive box 12 and the second drive box 21 are connected by a connecting pipe 15. A fixing pipe 6 is installed at the end of the second drive box 21 away from the connecting pipe 15. A chiller unit 17 is installed on the bottom outer wall of the housing 1. The chiller unit 17 is connected to the housing 1 by a return pipe 16, and the chiller unit 17 is connected to the water tank 8 by a delivery pipe 5. The system also includes:

[0025] The flow guiding mechanism 7 is disposed in the cylinder 11 and is used to guide the airflow entering the rotating tube 2 into the cylinder 11;

[0026] The spraying mechanism 18 is located outside the connecting pipe 15 and the fixed pipe 6, and is used to spray the outside of the cylinder 11.

[0027] The gas requiring cooling can be introduced into the rotating tube 2 through the inlet pipe 13, and then into the cylinder 11 under the action of the guide mechanism 7. At this time, cold water can be drawn out of the water tank 8 by the submersible pump 9, and then introduced into the first drive box 12 through the liquid guide pipe 10, then into the second drive box 21 through the connecting pipe 15, and finally into the fixed pipe 6. The cold water entering the connecting pipe 15 and the fixed pipe 6 can be sprayed to the outside of the cylinder 11 by the spray mechanism 18, which can cool the gas in the cylinder 11. When the cold water enters the first drive box 12 and the second drive box 21, it can drive the fan blade 14 to rotate, and the fan blade 14 can drive the rotating tube 2 to rotate. The moving pipe 2 can drive the cylinder 11 to rotate, so that the cold water sprayed by the spray mechanism 18 can be evenly applied to the outer surface of the cylinder 11, resulting in better cooling effect. The cold water sprayed onto the outer surface of the cylinder 11 will fall to the bottom of the box 1, and then be introduced into the chiller unit 17 through the return pipe 16. After being recooled by the chiller unit 17, it can be transported back to the water tank 8 through the conveying pipe 5, so that the cold water can be recycled. This structure effectively improves the contact area and contact time between the carrier for gas circulation and the spray water, so that the gas can be fully cooled, and the spray water can be evenly applied to the outer surface of the carrier for gas circulation, making the cooling more uniform and faster, and the use effect better.

[0028] As one embodiment of the present invention, please refer to Figure 3 , Figure 4 and Figure 5 The flow guiding mechanism 7 includes baffles 26 evenly distributed in the rotating tube 2, with the baffles 26 corresponding to the cylinder 11. A partition 27 is also provided in the cylinder 11. A gas supply pipe 28 penetrating the rotating tube 2 is provided on one side of the baffle 26, with the end of the gas supply pipe 28 located on one side of the partition 27. An outlet pipe 29 penetrating the rotating tube 2 is provided on the other side of the baffle 26, with the end of the outlet pipe 29 located on the other side of the partition 27. When gas enters the rotating tube 2, it is blocked by the baffle 26. The gas can be fed into the cylinder 11 through the gas delivery pipe 28, and under the separation effect of the baffle 27 in the cylinder 11, the gas can circulate once in the cylinder 11, and then flow back into the rotating pipe 2 through the gas outlet pipe 29 and be transported to the rear. This can effectively increase the residence time of the gas in the rotating pipe 2. With the cylinder 11 as the carrier of gas flow, when the spray mechanism 18 sprays water onto the outer surface of the cylinder 11, the gas can be cooled more quickly, resulting in better performance.

[0029] As one embodiment of the present invention, please refer to Figure 1 The spraying mechanism 18 includes a spray pipe 19 disposed on the outer wall of the connecting pipe 15 and the fixed pipe 6. The spray pipe 19 is located between adjacent cylinders 11. Spray nozzles 20 are evenly distributed on both sides of the outer wall of the spray pipe 19. The diameter of the spray nozzles 20 gradually decreases from the connecting end of the spray pipe 19 to the other end of the spray pipe 19. Cold water in the connecting pipe 15 and the fixed pipe 6 can flow into the spray pipe 19 and then spray out along the spray nozzles 20. The diameter of the spray nozzles 20 gradually decreases from the connecting end of the spray pipe 19 to the other end of the spray pipe 19, which can keep the flow rate of the spray water sprayed by the spray nozzles 20 consistent, so that the spray water can act evenly on the outer surface of the cylinder 11, resulting in better performance.

[0030] As one embodiment of the present invention, please refer to Figure 2 A rubber ring 23 is fixedly installed in the mounting hole, and the rubber ring 23 is sleeved on the outside of the rotating tube 2. Under the action of the rubber ring 23, the cold water in the box 1 can be prevented from leaking out through the mounting hole, resulting in better performance.

[0031] As one embodiment of the present invention, please refer to Figure 2 Both outer walls of the housing 1 are provided with connecting rods 24 that are evenly distributed in a ring. The ends of the connecting rods 24 are provided with support cylinders 25. The end of the rotating tube 2 is rotatably installed in the support cylinder 25. The support cylinder 25 can support the rotating tube 2, prevent the rotating tube 2 from squeezing the rubber ring 23, effectively delay the aging time of the rubber ring 23, and make the rotation process of the rotating tube 2 more stable, resulting in better performance.

[0032] In one embodiment of the present invention, both the submersible pump 9 and the chiller unit 17 are connected to a switch via wires, and the switch is electrically connected to a controller. The specific structure of the controller is not limited. In this embodiment, preferably, the controller is a microprogrammed controller.

[0033] As one embodiment of the present invention, please refer to Figure 4 and Figure 5 The inner wall of the cylinder 11 is provided with support rods 30 that are evenly distributed in a ring. The ends of the support rods 30 are connected to the outer wall of the rotating tube 2. The support rods 30 can improve the connection stability between the cylinder 11 and the rotating tube 2, making it less likely for the connection point between the rotating tube 2 and the cylinder 11 to detach, resulting in better performance.

[0034] In use, the gas requiring cooling can be introduced into the rotating tube 2 through the inlet pipe 13, and then into the cylinder 11 under the action of the guide mechanism 7. At this time, cold water can be drawn out of the water tank 8 by the submersible pump 9, and then introduced into the first drive box 12 through the liquid guide pipe 10, and then into the second drive box 21 through the connecting pipe 15, and finally into the fixed pipe 6. The cold water entering the connecting pipe 15 and the fixed pipe 6 can be sprayed to the outside of the cylinder 11 by the spray mechanism 18, which can cool the gas in the cylinder 11. When the cold water enters the first drive box 12 and the second drive box 21, it can drive the fan blade 14 to rotate, and the fan blade 14 can drive the rotating tube 2 to rotate. When the rotating pipe 2 is moved, the cylinder can be rotated, allowing the cold water sprayed by the spray mechanism 18 to act evenly on the outer surface of the cylinder 11, resulting in better cooling effect. The cold water sprayed onto the outer surface of the cylinder 11 will fall to the bottom of the box 1, and then be introduced into the chiller unit 17 through the return pipe 16. After being recooled by the chiller unit 17, it can be transported back to the water tank 8 through the delivery pipe 5, so that the cold water can be recycled. This structure effectively improves the contact area and contact time between the carrier for gas circulation and the spray water, so that the gas can be fully cooled, and the spray water can act evenly on the outer surface of the carrier for gas circulation, making the cooling more uniform and faster, and the use effect better.

[0035] It should be noted that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spray system for cooling the intake air of a gas turbine, comprising a housing, characterized in that, Mounting holes are provided on both outer walls of the housing, and rotating tubes are movably installed through these holes. A first fixing rod is provided on one outer wall of the housing in a circular pattern at equal intervals, and an exhaust pipe is provided at the end of each first fixing rod. One end of the exhaust pipe is located within the rotating tube. A second fixing rod is provided on the other outer wall of the housing in a circular pattern at equal intervals, and an air inlet pipe is provided at the end of each second fixing rod. One end of the air inlet pipe is located within the rotating tube. Cylindrical rings are fixedly installed on the outer wall of the rotating tube at equal intervals. A first drive box and a second drive box are fixedly installed on the inner walls of both sides of the housing, respectively. Fan blades are provided on the outer wall of the rotating tube in a circular pattern at equal intervals, and the fan blades are located within the first and second drive boxes, respectively. A water tank is provided on the top outer wall of the housing, and a submersible pump is installed in the water tank. A liquid guide pipe is provided at the liquid guide end of the submersible pump, and the end of the liquid guide pipe is connected to the first drive box. The first and second drive boxes are connected by a connecting pipe. The end of the second drive box furthest from the connecting pipe... The enclosure is equipped with a fixed pipe, and a chiller unit is installed on the bottom outer wall of the housing. The chiller unit and the housing are connected via a return pipe, and the chiller unit and the water tank are connected via a delivery pipe. The enclosure also includes: a flow guiding mechanism housed within a cylinder to guide airflow entering the rotating pipe into the cylinder; and a spraying mechanism located outside the connecting pipe and the fixed pipe to spray the outside of the cylinder. The flow guiding mechanism includes baffles evenly distributed within the rotating pipe, with the baffles corresponding to the cylinder. The cylinder is also provided with a baffle. A gas supply pipe is provided on one side of the baffle, passing through the rotating pipe. The end of the gas supply pipe is located on one side of the baffle. An air outlet pipe is provided on the other side of the baffle, passing through the rotating pipe. The end of the air outlet pipe is located on the other side of the baffle. The spraying mechanism includes a spray pipe provided on the outer wall of the connecting pipe and the fixed pipe. The spray pipe is located between adjacent cylinders. Spray nozzles are provided on both sides of the outer wall of the spray pipe at equal intervals. The diameter of the spray nozzles gradually decreases from the connecting end of the spray pipe to the other end of the spray pipe.

2. The sprayer for cooling and reducing the temperature of gas turbine inlet air according to claim 1, characterized in that, A rubber ring is fixedly installed in the mounting hole, and the rubber ring is sleeved on the outside of the rotating tube.

3. The sprayer for cooling and reducing the temperature of gas turbine inlet air according to claim 2, characterized in that, Both sides of the outer wall of the box are provided with connecting rods that are evenly distributed in a ring, and the ends of the connecting rods are provided with support cylinders, and the end of the rotating tube is rotatably disposed in the support cylinder.

4. The sprayer for cooling and reducing the temperature of gas turbine inlet air according to claim 1, characterized in that, Both the submersible pump and the chiller are connected to a switch via wires, and the switch is electrically connected to a controller.

5. A sprayer for cooling and reducing the temperature of gas turbine inlet air according to claim 1, characterized in that, The inner wall of the cylinder is provided with support rods that are evenly distributed in a ring, and the ends of the support rods are connected to the outer wall of the rotating tube.

Images