Nozzle structure for gas turbine

Abstract

The utility model discloses a nozzle structure for a gas turbine, which comprises an air inlet pipe, an adjusting structure, a first filtering structure, a second filtering structure, an exhaust structure and a nozzle. Inlet gas of the first filtering structure and the second filtering structure is replaced through the three-way reversing valve, gas enters from the left side of the first filtering structure or the second filtering structure, impurities attached to the gas can be adsorbed through the activated carbon layer, then the gas is subjected to secondary filtering through the polyamide layer, and then high-purity gas can be obtained; and gas backflow can be avoided through a first one-way valve and a second one-way valve, a cover plate can be opened through a hinge by disassembling a bolt, the frame is convenient to take down, the effect of cleaning impurities collected in the frame is achieved, and the situation that the working efficiency is affected due to blockage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of gas turbines, in particular to a nozzle structure for gas turbines. Background Art

[0002] A gas turbine is an internal combustion power machine that uses a 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 type heat engine. In the main flow of air and gas in a gas turbine, the gas turbine cycle consists of only three major components: a compressor, a combustion chamber, and a gas turbine. It is commonly known as a simple cycle, and most gas turbines use a simple cycle scheme.

[0003] The Chinese patent with the patent number CN219264360U discloses "A fuel nozzle with a cooling structure for a gas turbine". When the combustion nozzle is working, the fuel enters from the inside of the center body, is diverted through the first fuel delivery channel, and then the fuel enters the inside of the second fuel delivery channel, and enters the inside of the nozzle through the second fuel delivery channel, and is fully mixed with the air inside the nozzle. Then part of the fuel is discharged through the mixing tube, and the heat generated inside the nozzle will be absorbed and taken away by the fuel passing through the first fuel delivery channel, thereby reducing the heat inside the nozzle, and then cooling the fuel nozzle. The multiple groups of nozzles and mixing tubes are set to divert the fuel to avoid the concentration of fuel. Through this design, the fuel is diverted under the design of the first fuel delivery channel and the second fuel delivery channel. Then, when the fuel is mixed with air at the nozzle, the fuel passing through the first fuel delivery channel again can absorb the heat generated by the mixing inside the nozzle, thereby achieving the effect of cooling the inside of the combustion nozzle, avoiding the excessive temperature inside the combustion nozzle, and improving the practicality of the device.

[0004] Although the above-mentioned fuel nozzle with a cooling structure for a gas turbine has certain advantages in cooling ability, it is difficult to filter impurities contained in the fuel gas, and the impurities easily clog and accumulate the filter holes of the filter layer, resulting in reduced output, reducing work efficiency and practicality. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a nozzle structure for a gas turbine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nozzle structure for a gas turbine, comprising an intake pipe, an adjustment structure, a first filter structure, a second filter structure, an exhaust structure and a nozzle, the right side of the intake pipe is installed with an adjustment structure, the right side of the adjustment structure is connected to the first filter structure, and the upper right end of the adjustment structure is connected to the second filter structure, the right side of the first filter structure is fixedly connected to the exhaust structure, and the lower right end of the exhaust structure is installed with a nozzle, the adjustment structure comprises a pressure sensor, a three-way reversing valve and a first connecting pipe, the pressure sensor is installed on the left side of the intake pipe, the left and right ends of the three-way reversing valve are fixedly connected to the intake pipe and the first filter structure respectively, and the upper end of the three-way reversing valve is fixedly connected to one end of the first connecting pipe, and the other end of the first connecting pipe is connected to the second filter structure.

[0007] Optionally, the first filtering structure includes a Y-shaped tube, a cover plate, a frame, a polyamide layer and an activated carbon layer. The lower side of the Y-shaped tube is fitted with the cover plate, the upper end face of the cover plate is fitted with the frame, the side of the frame is covered with a polyamide layer, and the upper side of the polyamide layer is provided with an activated carbon layer. The left and right ends of the Y-shaped tube are respectively fixedly connected to the three-way reversing valve and the exhaust structure.

[0008] Optionally, the exhaust structure includes an outlet pipe, a second connecting pipe, a first one-way valve and a second one-way valve, the upper right end of the outlet pipe is fixedly connected to one end of the second connecting pipe, and the other end of the second connecting pipe is fixedly connected to the second filtering structure, the first one-way valve is installed on the left side of the outlet pipe, the second one-way valve is installed on the lower side of the second connecting pipe, and the right end of the outlet pipe is installed with a nozzle.

[0009] Optionally, the first filtering structure and the second filtering structure have the same structure.

[0010] Optionally, the pressure sensor is connected to an external alarm via an external controller, so that an alarm may be sounded via the external alarm when the pressure sensor detects that the air intake pipe is blocked.

[0011] Optionally, a protrusion is provided on the left side of the upper end surface of the inner wall of the Y-shaped tube to prevent gas from passing through the upper side of the Y-shaped tube.

[0012] Optionally, the left and right lower sides of the Y-shaped tube and the left and right upper sides of the cover plate are fixedly connected with hinges and bolts respectively, and the impurities inside the frame can be easily handled by disassembling and assembling the bolts.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a nozzle structure for a gas turbine. By setting an adjustment structure, an alarm is transmitted to an external alarm device according to the blockage of an intake pipe detected by a pressure sensor. The intake of a first filter structure and a second filter structure are replaced by a three-way reversing valve. The gas enters from the left side of the first filter structure or the second filter structure. The impurities attached to the gas can be firstly adsorbed by the activated carbon layer. Then, the gas is filtered twice by the polyamide layer to obtain a gas of higher purity, and finally sprayed out from the nozzle through the outlet pipe. The backflow of the gas can be avoided by using the first one-way valve and the second one-way valve. By disassembling the bolts, the cover plate can be opened by using hinges, so that the frame can be easily removed, thereby achieving the effect of cleaning the impurities collected inside the frame and avoiding blockage affecting the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the adjustment structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the first filtering structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the exhaust structure of the utility model.

[0020] Among them: intake pipe -1, adjustment structure -2, first filter structure -3, second filter structure -4, exhaust structure -5, nozzle -6, pressure sensor -21, three-way reversing valve -22, first connecting pipe -23, Y-type tube -31, cover plate -32, frame -33, polyamide layer -34, activated carbon layer -35, bump -36, hinge -37, bolt -38, outlet pipe -51, second connecting pipe -52, first one-way valve -53, second one-way valve -54. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1 , Figure 2 and Figure 3The utility model provides a nozzle structure for a gas turbine, comprising an intake pipe 1, an adjustment structure 2, a first filtering structure 3, a second filtering structure 4, an exhaust structure 5 and a nozzle 6. The right side of the intake pipe 1 is equipped with the adjustment structure 2, the right side of the adjustment structure 2 is connected to the first filtering structure 3, and the upper right end of the adjustment structure 2 is connected to the second filtering structure 4, the right side of the first filtering structure 4 is fixedly connected to the exhaust structure 5, and the lower right end of the exhaust structure 5 is equipped with the nozzle 6. The adjustment structure 2 includes a pressure sensor 21, a three-way reversing valve 22 and a first connecting Taking over the pipe 23, the pressure sensor 21 is installed on the left side of the intake pipe, the left and right ends of the three-way reversing valve 22 are fixedly connected to the intake pipe 1 and the first filter structure 3 respectively, and the upper end of the three-way reversing valve 22 is fixedly connected to one end of the first connecting pipe 23, and the other end of the first connecting pipe 23 is connected to the second filter structure 4. The structures of the first filter structure 3 and the second filter structure 4 are consistent, and the pressure sensor 21 is connected to the external alarm through an external controller, so that an alarm can be issued through the external alarm when the pressure sensor 21 detects that the intake pipe 1 is blocked.

[0023] See also Figure 4 The utility model provides a nozzle structure for a gas turbine. The first filtering structure 3 includes a Y-shaped tube 31, a cover plate 32, a frame 33, a polyamide layer 34 and an activated carbon layer 35. The lower side of the Y-shaped tube 31 is fitted with the cover plate 32, the upper end surface of the cover plate 32 is fitted with the frame 33, the side surface of the frame 33 is covered with a polyamide layer 34, and the upper side of the polyamide layer 34 is provided with an activated carbon layer 35. The left and right ends of the Y-shaped tube 31 are respectively fixedly connected to the three-way reversing valve 22 and the exhaust structure 5. A convex block 36 is provided on the left side of the upper end surface of the inner wall of the Y-shaped tube 31 to prevent gas from passing through the upper side of the Y-shaped tube 31. The left and right sides of the lower side of the Y-shaped tube 31 and the left and right sides of the upper side of the cover plate 32 are respectively fixedly connected with hinges 37 and bolts 38. By disassembling and assembling the bolts 38, impurities inside the frame 33 can be easily processed.

[0024] See also Figure 5 The utility model provides a nozzle structure for a gas turbine. The exhaust structure 5 includes an outlet pipe 51, a second connecting pipe 52, a first one-way valve 53 and a second one-way valve 54. The upper right end of the outlet pipe 51 is fixedly connected to one end of the second connecting pipe 52, and the other end of the second connecting pipe 52 is fixedly connected to the second filtering structure 4. The first one-way valve 53 is installed on the left side of the outlet pipe 51, the second one-way valve 54 is installed on the lower side of the second connecting pipe 52, and the nozzle 6 is installed on the right end of the outlet pipe 51.

[0025] Here’s how it works:

[0026] First, the utility model is installed at the required location and the circuit is connected;

[0027] Second, the gas is transported from left to right through the intake pipe 1, and the gas enters the first filter structure 3 to the right through the three-way reversing valve 22. The gas enters from the Y-shaped tube 31 of the first filter structure 3, and is limited by the protrusion 36 so that the gas enters from the frame 33. The gas first passes through the activated carbon layer 35, and the activated carbon layer 35 adsorbs impurities in the gas. After the gas is filtered twice through the polyamide layer 34, a higher purity gas is obtained and sprayed to the outside from the exhaust pipe 51 through the nozzle 6;

[0028] Third, when the polyamide layer 34 is blocked, the pressure at the intake pipe 1 increases. When the pressure sensor 21 detects that the pressure of the intake pipe 1 reaches the set value, the external controller reacts to the external alarm to sound an alarm. After receiving the alarm, the staff rotates the three-way reversing valve 22 to convert the gas from passing through the first filter structure 3 to passing through the first connecting pipe 23. By removing the bolts 38 of the first filter structure 3, the cover 32 can be opened by using the hinge 37. The staff can remove the frame 33 to facilitate the centralized treatment of impurities collected inside the frame 33. The restrictions of the first one-way valve 53 and the second one-way valve 54 are used to avoid gas backflow, thereby achieving the cleaning of the first filter structure 3 or the second filter structure 4 without affecting the work efficiency.

[0029] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0030] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0031] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nozzle structure for a gas turbine, characterized in that: The invention comprises an air intake pipe (1), an adjusting structure (2), a first filtering structure (3), a second filtering structure (4), an exhaust structure (5) and a nozzle (6), wherein the right side of the air intake pipe (1) is provided with the adjusting structure (2), the right side of the adjusting structure (2) is connected to the first filtering structure (3), and the upper right end of the adjusting structure (2) is connected to the second filtering structure (4), the right side of the first filtering structure (3) is fixedly connected to the exhaust structure (5), and the lower right end of the exhaust structure (5) is fixedly connected to the exhaust structure (5). A nozzle (6) is installed, and the regulating structure (2) comprises a pressure sensor (21), a three-way reversing valve (22) and a first connecting pipe (23), wherein the pressure sensor (21) is installed on the left side of the air intake pipe, the left and right ends of the three-way reversing valve (22) are fixedly connected to the air intake pipe (1) and the first filtering structure (3) respectively, and the upper end of the three-way reversing valve (22) is fixedly connected to one end of the first connecting pipe (23), and the other end of the first connecting pipe (23) is connected to the second filtering structure (4).

2. A nozzle structure for a gas turbine according to claim 1, characterized in that: The first filtering structure (3) comprises a Y-shaped tube (31), a cover plate (32), a frame (33), a polyamide layer (34) and an activated carbon layer (35); the lower side of the Y-shaped tube (31) is in contact with the cover plate (32); the upper end surface of the cover plate (32) is in contact with the frame (33); the side surface of the frame (33) is provided with a polyamide layer (34); the upper side of the polyamide layer (34) is provided with an activated carbon layer (35); and the left and right ends of the Y-shaped tube (31) are fixedly connected to the three-way reversing valve (22) and the exhaust structure (5) respectively.

3. The nozzle structure for a gas turbine according to claim 1, characterized in that: The exhaust structure (5) comprises an air outlet pipe (51), a second connecting pipe (52), a first one-way valve (53) and a second one-way valve (54); the upper right end of the air outlet pipe (51) is fixedly connected to one end of the second connecting pipe (52), and the other end of the second connecting pipe (52) is fixedly connected to the second filtering structure (4); the first one-way valve (53) is installed on the left side of the air outlet pipe (51), the second one-way valve (54) is installed on the lower side of the second connecting pipe (52), and the nozzle (6) is installed on the right end of the air outlet pipe (51).

4. The nozzle structure for a gas turbine according to claim 1, characterized in that: The first filtering structure (3) and the second filtering structure (4) have the same structure.

5. The nozzle structure for a gas turbine according to claim 1, characterized in that: The pressure sensor (21) is connected to an external alarm via an external controller.

6. The nozzle structure for a gas turbine according to claim 2, characterized in that: A convex block (36) is provided on the left side of the upper end surface of the inner wall of the Y-shaped tube (31).

7. The nozzle structure for a gas turbine according to claim 2, characterized in that: The left and right sides of the lower side of the Y-shaped tube (31) and the left and right sides of the upper side of the cover plate (32) are fixedly connected to hinges (37) and bolts (38) respectively.

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