Efficient washing device for gas turbine

Abstract

The utility model relates to the technical field of gas turbines, in particular to an efficient washing device for a gas turbine, which comprises a bearing bottom plate, moving wheels are fixedly mounted at the left end and the right end of the bottom of the bearing bottom plate, a water tank is fixedly mounted at the left end of the top of the bearing bottom plate, and a water receiving opening is formed in the left end of the top of the water tank through a hose. A connecting hose is arranged at the top of the water receiving opening, and a barrel inserting pump is fixedly installed at the middle end of the top of the water tank. Through cooperation of the structures, the device has the advantage of cleaning the gas compressor during operation or after shutdown, and solves the problem that after the gas turbine works for a long time or in an environment with serious air pollution degree, the gas compressor cannot be cleaned due to the fact that sucked air is not filtered completely, and the gas compressor cannot be cleaned. The problems that scale or salt is gradually deposited on the through-flow part of the air compressor when the air compressor works, so that the compression ratio and the efficiency of the air compressor are reduced, and blades are gradually corroded due to salt deposition are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbines, in particular to a high-efficiency water washing device for gas turbines. Background Art

[0002] A gas turbine is an internal combustion power machine that uses continuously flowing gas as a working fluid to drive the impeller to rotate at high speed, converting the energy of the fuel into useful work. It is a rotating impeller heat engine.

[0003] At present, when a gas turbine has been operating for a long time or in an environment with severe air pollution, the inhaled air is not filtered cleanly, which will cause the flow part of the compressor to gradually accumulate scale or salt, resulting in a decrease in the compression ratio and efficiency of the compressor. The blades will also gradually corrode due to salt accumulation. For this reason, we propose a high-efficiency water washing device for gas turbines. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency water washing device for a gas turbine, which has the advantage of cleaning the compressor during operation or after shutdown, and solves the problem that when the gas turbine has been operating for a long time or in an environment with a relatively serious air pollution level, the flow part of the compressor will gradually accumulate scale or salt due to the inhaled air not being filtered cleanly, resulting in a decrease in the compression ratio and efficiency of the compressor, and the blades will also gradually corrode due to salt accumulation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-efficiency water washing device for a gas turbine, comprising a supporting base plate, movable wheels are fixedly installed on the left and right ends of the bottom of the supporting base plate, a water tank is fixedly installed on the left end of the top of the supporting base plate, a water inlet is provided at the left end of the top of the water tank through a hose, and a connecting hose is provided on the top of the water inlet, a bucket pump is fixedly installed at the middle end of the top of the water tank, a drain valve is fixedly installed on the top of the bucket pump, a liquid level gauge connected to the water tank is fixedly installed on the right side of the water tank, a pressure pump is fixedly installed on the right end of the top of the supporting base plate, the liquid inlet end of the pressure pump is connected to the lower end of the right side of the water tank through a pipeline, a pressure gauge, a water inlet ball valve and an interconnecting hose are sequentially provided on the pipeline of the liquid outlet end of the pressure pump, and a control box is fixedly installed at the rear end of the top of the supporting base plate.

[0006] Preferably, a push handle is fixedly connected to the left side of the supporting base plate.

[0007] Preferably, the left end of the rear side of the water tank is connected to a drain pipe with a drain ball valve provided on the inner surface.

[0008] Preferably, a hose is provided at the bottom of the barrel pump, and the hose extends to the lower end of the water tank cavity.

[0009] Preferably, the output end of the control box is electrically connected to the input ends of the pressure pump and the barrel pump respectively through wires.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The utility model is applicable to online and offline water washing of gas turbines.

[0012] 2. The utility model can clean the gas turbine compressor blades accurately and efficiently, thereby improving the efficiency of the gas turbine.

[0013] 3. The utility model has a simple structure and is easy to operate and maintain.

[0014] 4. The utility model is mobile and can be used to clean multiple gas turbine units to save installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0016] Figure 2 This is a schematic cross-sectional view of the utility model from a second viewing angle;

[0017] Figure 3 This is a related system diagram of the present utility model.

[0018] In the figure: 1. Interconnecting hose; 2. Water tank; 3. Pressure pump; 4. Control box; 5. Liquid level gauge; 6. Water inlet ball valve; 7. Water inlet; 8. Drain valve; 9. Pressure gauge; 10. Moving wheel; 11. Load-bearing bottom plate; 12. Push handle; 13. Drain pipe; 14. Bucket pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] The interconnected hose 1, water tank 2, pressure pump 3, control box 4, liquid level gauge 5, water inlet ball valve 6, water inlet 7, drain valve 8, pressure gauge 9, moving wheel 10, supporting base plate 11, push handle 12, discharge pipe 13 and bucket pump 14 components of this application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0023] See also Figure 1-Figure 3As shown, the utility model provides a technical solution: a high-efficiency water washing device for a gas turbine, comprising a supporting base plate 11, a push handle 12 is fixedly connected to the left side of the supporting base plate 11, and movable wheels 10 are fixedly installed on the left and right ends of the bottom of the supporting base plate 11. A water tank 2 is fixedly installed on the left end of the top of the supporting base plate 11, and the left end of the rear side of the water tank 2 is connected to a drain pipe 13 with a sewage ball valve provided on the inner surface. A water inlet 7 is provided at the left end of the top of the water tank 2 through a hose, and a connecting hose is provided on the top of the water inlet 7. A bucket pump 14 is fixedly installed at the middle end of the top of the water tank 2, and the bottom of the bucket pump 14 A hose is provided, and the hose extends to the lower end of the inner cavity of the water tank 2. A drain valve 8 is fixedly installed on the top of the bucket pump 14. A liquid level gauge 5 connected to the water tank 2 is fixedly installed on the right side of the water tank 2. A pressure pump 3 is fixedly installed on the right end of the top of the supporting base plate 11. The liquid inlet end of the pressure pump 3 is connected to the lower end of the right side of the water tank 2 through a pipeline. A pressure gauge 9, a water inlet ball valve 6 and an interconnected hose 1 are sequentially provided on the pipeline of the liquid outlet end of the pressure pump 3. A control box 4 is fixedly installed at the rear end of the top of the supporting base plate 11. The output end of the control box 4 is electrically connected to the input end of the pressure pump 3 and the bucket pump 14 through wires.

[0024] The specific operation mode of this technical solution is:

[0025] 1. Online washing

[0026] Online water washing can effectively extend the interval between offline water washing to reduce the number of shutdowns. The cleaning fluid is desalted water or a mixture of desalted water and cleaning fluid. The cleaning process generally takes 5 to 10 minutes (only the spray washing stage). It is recommended to perform online water washing every day and use desalted water + cleaning agent for water washing every two days. The type and accumulation of dirt are determined by the environment in which the power plant is located. The power plant operator should appropriately adjust the type of cleaning fluid and cleaning cycle according to the actual environment of the power plant.

[0027] The online water washing process is as follows

[0028] 1. Check whether the equipment, instruments and electrical connections of the water washing device are normal, the water tank 2 is clean and free of foreign matter, and the pressure pump 3, the water inlet ball valve 6 and the sewage ball valve in the discharge pipe 13 are in the closed state;

[0029] 2. Add an appropriate proportion of desalted water through the water inlet 7, and add the cleaning agent to the water tank 2 through the barrel pump 14. Crank the stirrer several times to mix the desalted water and the cleaning agent evenly.

[0030] 3. Reduce the turbine load as required and adjust the IGV to the corresponding position. Other applicable operating parameters must also be met;

[0031] 4. Connect the water washing device to the air intake system interface through the interconnecting hose 1;

[0032] 5. Open the shut-off valve on the online water washing nozzle pipeline and the water inlet ball valve 6 downstream of the pressure pump 3, while keeping the drain ball valve in the drain pipe 13 closed;

[0033] 6. Connect the water washing device to the power supply, start the pressure pump 3 through the control box 4, and observe whether the pressure pump 3 operates normally;

[0034] 7. The online water washing process begins;

[0035] 8. After all the cleaning fluids have been sprayed, turn off the pressure pump 3;

[0036] 9. Then close the water inlet ball valve 6, disconnect the power supply of the water washing device, untie the interconnecting hose 1 on the interface, and plug the interface with the corresponding pipe cap;

[0037] 10. Open the drain ball valve in the drain pipe 13 to drain the remaining cleaning liquid in the water tank 2;

[0038] 11. The online water washing process is completed.

[0039] 2. Offline washing

[0040] Offline water washing is carried out under the drive of SFC. The entire cleaning process takes 8-10 hours (including 6 hours of turbine cooling). Generally, offline water washing is divided into four steps: preparation, cleaning, rinsing, and drying.

[0041] The details are as follows:

[0042] Step 1: Preparation

[0043] 1. After the gas turbine is shut down, crank and cool it down for about 6 hours;

[0044] 2. Open all valves of the drain system;

[0045] 3. Connect the drain main pipe to the power plant wastewater system. If the wastewater is discharged into the wastewater pool through the pipe, the shut-off valve on this pipe must also be opened;

[0046] 4. Shut down and lock the fuel supply and ignition system through the I&C system;

[0047] 5. Check whether the equipment, instruments and electrical connections of the water washing device are normal, the water tank 2 is clean and free of foreign matter, and the pressure pump 3, the water inlet ball valve 6 and the drain ball valve in the drain pipe 13 are in the closed state;

[0048] 6. Add appropriate proportion of desalted water through the water inlet 7, and add the cleaning agent to the water tank 2 through the barrel pump 14. Crank the stirrer several times to mix the desalted water and the cleaning agent evenly.

[0049] Step 2: Cleaning

[0050] 1. Fully open IGV;

[0051] 2. Use the cranking device to crank the turbine rotor;

[0052] 3. Connect to the air intake system interface 27A through the interconnecting hose 1 of the water washing device;

[0053] 4. Open the shut-off valve on the offline water washing nozzle pipeline and the water inlet ball valve 6 downstream of the pressure pump 3, while keeping the sewage ball valve in the drain pipe 13 closed;

[0054] 5. Connect the water washing device to the power supply, start the pressure pump 3 through the control box 4, and observe whether the pressure pump 3 operates normally;

[0055] 6. When the level gauge 5 indicates that the cleaning fluid has been consumed by 25%, turn off the pressure pump 3;

[0056] 7. Close the shut-off valve on the offline nozzle pipeline and open the shut-off valve on the online nozzle pipeline;

[0057] 8. Turn off the cranking device and use SFC to accelerate the engine (the switching speed cannot be lower than 100 rpm);

[0058] 9. When the speed reaches 300 rpm, start the pressure pump 3 and start the water washing process;

[0059] 10. When the engine speed reaches 750 rpm, turn off the SFC and allow the cleaning fluid to continue to be sprayed before the engine slows down to 300 rpm (the engine speed must be kept above 300 rpm during the cleaning fluid spraying process).

[0060] 11. When all the cleaning fluid is used up, turn off the pressure pump 3;

[0061] 12. The engine continues to decelerate to the cranking state (the entire water washing process takes about 20 minutes).

[0062] Step 3: Rinse

[0063] 1. Add 600 liters of demineralized water to water tank 2 through water inlet 7;

[0064] 2. Use the cranking device to crank the turbine rotor;

[0065] 3. Open the shut-off valve on the offline water washing nozzle pipeline and the water inlet ball valve 6 downstream of the pressure pump 3, while keeping the sewage ball valve in the drain pipe 13 closed;

[0066] 4. Start the pressure pump 3;

[0067] 5. When the level gauge 5 shows that the desalted water is consumed by 25%, turn off the pressure pump 3;

[0068] 6. Close the shut-off valve on the offline nozzle pipeline and open the shut-off valve on the online nozzle pipeline;

[0069] 7. Turn off the cranking device and use SFC to accelerate the engine (the switching speed cannot be lower than 100rpm). The SFC accelerated water washing curve is similar to that during cleaning;

[0070] 8. When the speed reaches 300 rpm, start the pressure pump 3 and start the water washing process;

[0071] 9. When the speed reaches 750 rpm, turn off the SFC and allow the desalted water to continue to be injected before the engine slows down to 300 rpm;

[0072] 10. When all the desalted water is used up, turn off the pressure pump 3;

[0073] 11. Disconnect the power supply of the water washing device, untie the interconnecting hose 1 of the interface, and plug the interface with the corresponding pipe cap;

[0074] Step 4: Drying

[0075] Dry igniter: To prevent starting failure caused by a wet igniter, it is recommended to start the "purge mode". This process can be repeated when the temperature is low and the humidity is high.

[0076] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A high-efficiency water washing device for a gas turbine, comprising a supporting base plate (11), characterized in that: The left and right ends of the bottom of the supporting base plate (11) are fixedly mounted with moving wheels (10), the left end of the top of the supporting base plate (11) is fixedly mounted with a water tank (2), the left end of the top of the water tank (2) is provided with a water inlet (7) through a hose, and the top of the water inlet (7) is provided with a connecting hose, the middle end of the top of the water tank (2) is fixedly mounted with a bucket pump (14), the top of the bucket pump (14) is fixedly mounted with an emptying valve (8), and the water tank A liquid level gauge (5) connected to the water tank (2) is fixedly installed on the right side of the supporting base plate (11), and a pressure pump (3) is fixedly installed on the right end of the top of the supporting base plate (11). The liquid inlet end of the pressure pump (3) is connected to the lower end of the right side of the water tank (2) through a pipeline. A pressure gauge (9), a water inlet ball valve (6) and an interconnecting hose (1) are sequentially arranged on the pipeline of the liquid outlet end of the pressure pump (3). A control box (4) is fixedly installed at the rear end of the top of the supporting base plate (11).

2. The high-efficiency water washing device for a gas turbine according to claim 1, characterized in that: A push handle (12) is fixedly connected to the left side of the bearing base plate (11).

3. The high-efficiency water washing device for a gas turbine according to claim 1, characterized in that: The left end of the rear side of the water tank (2) is connected to a drain pipe (13) with a drain ball valve provided on the inner surface.

4. The high-efficiency water washing device for a gas turbine according to claim 1, characterized in that: A hose is provided at the bottom of the barrel pump (14), and the hose extends to the lower end of the inner cavity of the water tank (2).

5. The high-efficiency water washing device for a gas turbine according to claim 1, characterized in that: The output end of the control box (4) is electrically connected to the input ends of the pressure pump (3) and the barrel pump (14) respectively through wires.

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