Compressed air supply device of movable gas turbine generator set

Abstract

The utility model provides a compressed air supply device of a movable gas turbine generator set, which is arranged below a frame of the movable gas turbine generator set and comprises a plurality of air compressors, and output ends of the plurality of air compressors are respectively connected with an input end of an air storage tank. The output end of the gas storage tank is connected with the input end of the gas-liquid separator, and the output end of the gas-liquid separator is connected with equipment needing gas supply; the output end of the air compressor is further provided with an unloading electromagnetic valve, the output end of the gas-liquid separator is further provided with a pressure sensor, and the control system is electrically connected with the air compressor, the unloading electromagnetic valve and the pressure sensor. According to the scheme, miniaturization design of the compressed air supply device is achieved, the compressed air supply device can be installed below a frame of the movable gas turbine generator set, and meanwhile the compressed air parameter requirement of the movable gas turbine generator set is met.

Description

Technical Field

[0001] This utility model relates to the field of compressed air supply technology for mobile gas turbine generator sets, specifically, to a compressed air supply device for mobile gas turbine generator sets. Background Technology

[0002] In the fields of hydrogen / ammonia power generation following hydrogen / ammonia production and storage in photovoltaic, wind power, and chemical industries, there are green fuel energy storage links such as hydrogen production and storage or ammonia production and storage. When peak-shaving power generation is required, gas turbines are needed to burn this stored fuel to supply power to the grid. For this intermittent power supply mode, gas turbine generator sets are usually used to achieve peak-shaving power generation. However, in distributed photovoltaic, wind power, or chemical projects, gas turbine generator sets usually need to be transported between multiple distributed energy project sites. Therefore, to simultaneously meet the needs of multi-site transportation and intermittent power generation, mobile gas turbine generator sets are usually used to achieve peak-shaving power generation, which can improve equipment utilization and reduce operating costs.

[0003] Gas turbine generator sets require compressed air during operation. The main uses of compressed air are threefold: first, as sealing air for the rotor shaft seals to prevent lubricating oil leakage towards the rotor, thus preventing continuous lubricating oil loss and contamination of the working medium of the gas turbine generator set; second, as the air source for pneumatic actuators in the gas turbine generator set, such as controlling the opening and closing of pneumatic valves; and third, for other auxiliary functions, such as backflushing the gas turbine generator set's intake air filter to clean the filter or prevent intake frost formation. The pressure range of compressed air varies from 0.4 MPa to 0.8 MPa depending on the application. The sources of compressed air are mainly twofold: first, after the gas turbine generator set is in a stable operating state, compressed air can be drawn from the gas turbine generator set's own air compressor; second, when the gas turbine generator set is in an unstable state during the start-up or shutdown deceleration phases, especially during the start-up phase, the air consumption is relatively large, and the gas turbine generator set's own air compressor cannot provide a stable pressure of compressed air, requiring external air supply. For stationary gas turbine generator sets, an air compressor station can be built near the generator set, providing a continuous and stable supply of compressed air through the air compressor units installed within the station. However, for mobile gas turbine generator sets, their mobility and uncertain operating times and locations make it impossible to build an air compressor station in advance. Building an on-site air compressor station would inevitably increase project investment, resulting in low equipment utilization and increased operating costs. Furthermore, due to road transport restrictions, mobile gas turbine generator sets cannot meet the size and weight requirements of high-power units. Therefore, current air compressor units used in the industry for gas turbine generator sets are too small and heavy to be mounted on the vehicles used for mobile gas turbine generator sets. Utilizing existing air compressor units would require additional trucks for transportation. This increases the complexity of mobile gas turbine generator sets and reduces their flexibility and mobility. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a compressed air supply device for mobile gas turbine generator sets. This device achieves a miniaturized design, allowing it to be installed under the frame of the mobile gas turbine generator set while meeting the compressed air parameter requirements of the mobile gas turbine generator set.

[0005] To solve the above-mentioned technical problems, this utility model provides a compressed air supply device for a mobile gas turbine generator set. The compressed air supply device is installed under the frame of the mobile gas turbine generator set and includes multiple air compressors. The output ends of the multiple air compressors are respectively connected to the input end of an air storage tank. The output end of the air storage tank is connected to the input end of a gas-liquid separator. The output end of the gas-liquid separator is connected to the equipment requiring air supply. The output end of each air compressor is also equipped with an unloading solenoid valve, and the output end of the gas-liquid separator is also equipped with a pressure sensor. The control system is electrically connected to the air compressors, the unloading solenoid valve, and the pressure sensor.

[0006] Furthermore, the output end of the gas-liquid separator is connected to the input end of the back pressure valve, the output end of the back pressure valve is connected to the input end of the pipeline filter, and the output end of the pipeline filter is connected to the gas supply equipment.

[0007] Furthermore, the compressed air supply device also includes a central pipe, with the output ends of the plurality of air compressors respectively connected to the input end of the central pipe, and the output end of the central pipe connected to the input end of the air storage tank.

[0008] Furthermore, the output end of the air compressor is connected to the input end of the manifold via a check valve, and the unloading solenoid valve is located between the air compressor and the check valve.

[0009] Furthermore, a check valve is provided at the output end of the collection pipe.

[0010] Furthermore, a safety valve is provided at the upper end of the gas storage tank, and a drain valve is provided at the lower end.

[0011] Furthermore, the gas supply equipment includes a shaft seal gas supply equipment and other gas supply equipment. The other gas supply equipment refers to the equipment in the mobile gas turbine generator set that requires gas supply for purposes other than shaft seals. The output end of the pipeline filter is connected to the shaft seal gas supply equipment through a regulating valve, and the output end of the pipeline filter is also connected to the other gas supply equipment.

[0012] Furthermore, the gas storage tank is also equipped with an external gas supply pipeline for connecting to an external gas supply device.

[0013] Furthermore, a check valve is also installed on the external gas supply pipeline.

[0014] Furthermore, each of the air compressors is electrically connected to the control system via a junction box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A compressed air supply device with multiple air compressors operating in parallel was designed, thereby reducing the size of a single unit and meeting the compressed air requirements of gas turbine generator sets.

[0017] 2. A new equipment layout is proposed to make full use of the space under the chassis of the mobile gas turbine generator set, avoiding the need to install the air compressor on the vehicle and occupy space on the vehicle.

[0018] 3. Design an unloading solenoid valve to prevent motor overload when the air compressor starts, thereby improving the reliability and safety of the device. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of a mobile gas turbine generator set provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the compressed air supply device for a mobile gas turbine generator set provided in this embodiment of the present invention;

[0022] Figure 3 This is a practical application layout diagram of a compressed air supply device for a mobile gas turbine generator set provided in an embodiment of this utility model.

[0023] In the picture:

[0024] 1-Housing; 2-Supporting mechanism; 3-Gas turbine; 4-Gearbox; 5-Generator; 6-Gas turbine air intake treatment module; 7-Housing air intake treatment module; 8-Exhaust device; 9-Lubricating oil module; 10-Fuel module; 11-Electrical control compartment; 12-Compressed air supply device;

[0025] 1201-Air compressor; 1202-Check valve; 1203-Junction box; 1204-Unloading solenoid valve; 1205-Manual ball valve; 1206-Check valve; 1207-Drain valve; 1208-Safety valve; 1209-Air tank; 1210-Gas-liquid separator; 1211-Pressure sensor; 1212-Back pressure valve; 1213-Pipeline filter; 1214-Pressure regulating valve; 1215-Combination pipe; 1216-Protective cover. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] Example

[0028] Please see Figure 1 The diagram shows a structural schematic of a mobile gas turbine generator set provided in an embodiment of the present invention. The compressed air supply device provided in this embodiment is installed on the mobile gas turbine generator set. The mobile gas turbine generator set includes a frame (in this embodiment, the frame mainly refers to a trailer chassis). An exhaust device 8, a compartment 1, and an electrical control compartment 11 are sequentially arranged on the frame from rear to front. A gas turbine 3, a gearbox 4, and a generator 5 are sequentially arranged inside the compartment 1 from rear to front. The gas turbine 3 is connected to the exhaust device 8. Next, a fuel module 10 is installed below the gas turbine 3. The fuel module 10 is located inside the cabin 1 and connected to the gas turbine 10. A gas turbine air intake treatment module 6 and a cabin air intake treatment module 7 are installed at the upper end of the cabin 1. The gas turbine air intake treatment module 6 is connected to the gas turbine 3. The cabin air intake treatment module 7 is connected to the cabin 1 and the electrical control room 11 respectively. The electrical control room 11 is equipped with a control system for the electrical control of various equipment in the mobile gas turbine generator set. Multiple sets of support mechanisms 2, lubricating oil modules 9 and compressed air supply devices 12 are installed under the frame.

[0029] Specifically, the chassis supports the entire gas turbine generator set and is equipped with multiple hydraulic support mechanisms 2 to provide rigid support during equipment operation; the cabin 1 is a protective and soundproof cabin used to reduce equipment noise and provide forced ventilation to prevent the surrounding area from heating up and to dilute any leaked gas; a fire-fighting system is installed on the cabin 1; the gas turbine 3 converts fuel thermal energy into rotational kinetic energy; the gearbox 4 adjusts the transmission speed from the gas turbine 3 to the generator 5 and provides auxiliary drives such as the main oil pump and starter; the generator 5 converts rotational kinetic energy into electrical energy; the gas turbine intake air treatment module 6 filters and silences the intake air of the gas turbine 3; the exhaust module 8 silences the high-temperature flue gas before discharging it into the atmosphere; the lubricating oil module 9 provides constant-temperature, constant-pressure, and clean circulating lubricating oil for the main equipment; the fuel module 10 processes fuel and controls the fuel quantity; the electrical compartment 11 contains electrical cabinets and control cabinets, forming a control system.

[0030] Please see Figure 2The diagram shows a schematic representation of the compressed air supply device for a mobile gas turbine generator set according to an embodiment of this utility model. The compressed air supply device is installed under the frame of the mobile gas turbine generator set and includes multiple air compressors 1201. Each air compressor 1201 can be a small, oil-free piston air compressor with a single unit displacement of 450 L / min. Multiple compressors can be arranged in parallel according to the air demand of the user. Figure 2 The diagram shows 5 units arranged side-by-side, meeting the 2.2m requirement. 3The air volume is [amount] / min; multiple air compressors 1201 are electrically connected to the control system via junction boxes 1203. Junction boxes 1203 are used to distribute external power to each air compressor 1201, so as to realize the power supply control of the control system to each air compressor 1201; the input terminals of multiple air compressors 1201 are connected to the outside, and the output terminals are respectively connected to the multiple input terminals of the main pipe 1215 via check valves 1202. Check valves 1202 are used to prevent compressed air backflow; the output terminal of air compressor 1201 is also equipped with an unloading solenoid valve 1204, which is located between air compressor 1201 and check valve 1204. Between 02 and 02, the unloading solenoid valve 1204 is used to release the compressed air in the pipeline between the one-way valve 1202 and the air compressor 1201 after the air compressor 1201 stops working. This can effectively reduce the torque when the air compressor 1201 starts next time and prevent the air compressor 1201 motor from overloading. When the air compressor 1201 is working, the unloading solenoid valve 1204 is closed to prevent air leakage. The first output end of the manifold 1215 is connected to the first input end of the air tank 1209. The air tank 1209 is used to store a certain amount of compressed air to buffer and stabilize the pressure. The first output end of the manifold 1215 is equipped with a check valve 1. 206 is used to prevent gas backflow; the second output end of the main pipe 1215 is located at the lowest end of the main pipe 1215 and is equipped with a drain valve 1207 to discharge condensate and deposited impurities; the second input end of the gas storage tank 1209 is equipped with an external gas supply pipe for connecting to an external gas supply device. The external gas supply pipe is also equipped with a manual ball valve 1205 and a check valve 1206. The manual ball valve 1205 is used to connect to the external gas supply device to realize the connection of an external compressed air source, serving as a supplement and backup function. The check valve 1206 is used to prevent gas backflow; a safety valve 1208 is installed at the upper end of the gas storage tank 1209 to prevent... To prevent overpressure in the air storage tank 1209, a drain valve 1207 is installed at the lower end of the air storage tank 1209 to discharge condensate and deposited impurities. The output end of the air storage tank 1209 is connected to the input end of the gas-liquid separator 1210, which is used to separate liquid water from compressed air. The lower end of the gas-liquid separator has a built-in drain valve 1207. The output end of the gas-liquid separator 1210 is connected to the input end of the back pressure valve 1212, which is used to adjust the compression spring so that it opens after the pressure of the compressed air exceeds a preset threshold, thereby limiting the system pressure from falling below the preset threshold. Optionally, the preset threshold can be 0.The back pressure valve 1212 has an output end connected to the input end of the pipeline filter 1213, which is used to further filter impurities in the pipeline. The output end of the pipeline filter 1213 is connected to the equipment requiring air supply. A pressure sensor 1211 is also installed at the output end of the gas-liquid separator 1210. The pressure sensor 1211 is located between the gas-liquid separator 1210 and the back pressure valve 1212, and is used to monitor the system pressure of compressed air, thus protecting and controlling the overall system of the compressed air supply device. The control system is electrically connected to the unloading solenoid valve 1204 and the pressure sensor 1211.

[0031] Among them, the equipment requiring gas supply includes shaft seal gas supply equipment and other gas supply equipment. Other gas supply equipment refers to equipment in the mobile gas turbine generator set that requires gas supply for purposes other than shaft seal. The output end of the pipeline filter 1213 is connected to the shaft seal gas supply equipment through the regulating valve 1214. The regulating valve 1214 is used to regulate the pressure of the gas used to remove the shaft seal. The output end of the pipeline filter 1213 is also connected to other gas supply equipment.

[0032] In this embodiment, the working steps of the compressed air supply device for the mobile gas turbine generator set are as follows:

[0033] Pressure sensor 1211 continuously monitors compressed air pressure. When the pressure is below 0.6MPa, the control system controls the power supply to be turned on, the unloading solenoid valve 1204 is closed, and the air compressor 1201 starts to provide compressed air.

[0034] When the pressure sensor 1211 detects that the system pressure has risen to 0.8 MPa, the control system stops supplying power to the air compressor 1201, the air compressor 1201 stops working, the unloading solenoid valve 1204 opens, the air compressor 1201 discharges exhaust gas to the outside, the exhaust pressure is equal to the ambient pressure, and it waits for the next start.

[0035] Please see Figure 3The diagram shows the actual application layout of a compressed air supply device for a mobile gas turbine generator set according to an embodiment of this utility model. The entire compressed air supply device is installed under the vehicle frame, and the support frame is welded and fixed to the vehicle frame as a fixed support for the compressed air supply device. Multiple air compressors 1201 are installed side by side on the outside, and each air compressor 1201 is connected to an air outlet pipe, which is connected to a main pipe 1203. The main pipe 1203 is also equipped with a one-way valve 1202 and an unloading solenoid valve 1204, which are integrated together and connected to the air outlet pipes of the air compressors 1201. A protective cover 1216 is installed on the outside of the support frame. The protective cover 1216 is equipped with weatherproof blades, and a mesh screen is installed behind the blades to filter large-volume impurities. An air storage tank 1209 is installed behind the air compressor 1201. The outlet of the air storage tank 1209 is connected to the gas-liquid separator 1210. After the compressed air passes through the gas-liquid separator 1210 and the liquid water is filtered out, the pipeline is connected to the upper compartment 1 and then to various air-using equipment.

[0036] It should be noted that, Figure 2 The system consists of five 1201 air compressors operating in parallel, and can also combine fewer or more than five 1201 air compressors to meet different air volume requirements.

[0037] In addition to mobile gas turbine generator sets, this compressed air supply device is also suitable for other mobile equipment with limited space and a need for compressed air.

[0038] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A compressed air supply device for a mobile gas turbine generator set, characterized in that, The compressed air supply device is installed under the frame of the mobile gas turbine generator set and includes multiple air compressors (1201). The output ends of the multiple air compressors (1201) are respectively connected to the input end of the air storage tank (1209). The output end of the air storage tank (1209) is connected to the input end of the gas-liquid separator (1210). The output end of the gas-liquid separator (1210) is connected to the equipment that needs air supply. The output end of the air compressor (1201) is also equipped with an unloading solenoid valve (1204). The output end of the gas-liquid separator (1210) is also equipped with a pressure sensor (1211). The control system is electrically connected to the air compressor (1201), the unloading solenoid valve (1204), and the pressure sensor (1211).

2. The compressed air supply device for a mobile gas turbine generator set according to claim 1, characterized in that, The output end of the gas-liquid separator (1210) is connected to the input end of the back pressure valve (1212), the output end of the back pressure valve (1212) is connected to the input end of the pipeline filter (1213), and the output end of the pipeline filter (1213) is connected to the gas supply equipment.

3. The compressed air supply device for a mobile gas turbine generator set according to claim 1, characterized in that, The compressed air supply device also includes a manifold (1215), the output ends of the plurality of air compressors (1201) are respectively connected to the input end of the manifold (1215), and the output end of the manifold (1215) is connected to the input end of the air storage tank (1209).

4. The compressed air supply device for a mobile gas turbine generator set according to claim 3, characterized in that, The output end of the air compressor (1201) is connected to the input end of the manifold (1215) through a one-way valve (1202), and the unloading solenoid valve (1204) is located between the air compressor (1201) and the one-way valve (1202).

5. The compressed air supply device for a mobile gas turbine generator set according to claim 3, characterized in that, The output end of the summing pipe (1215) is equipped with a check valve (1206).

6. The compressed air supply device for a mobile gas turbine generator set according to claim 1, characterized in that, The gas storage tank (1209) is equipped with a safety valve (1208) at the upper end and a drain valve (1207) at the lower end.

7. The compressed air supply device for a mobile gas turbine generator set according to claim 2, characterized in that, The gas supply equipment includes shaft seal gas supply equipment and other gas supply equipment. The other gas supply equipment refers to the equipment in the mobile gas turbine generator set that requires gas supply for purposes other than shaft seal. The output end of the pipeline filter (1213) is connected to the shaft seal gas supply equipment through a regulating valve (1214), and the output end of the pipeline filter (1213) is also connected to the other gas supply equipment.

8. A compressed air supply device for a mobile gas turbine generator set according to any one of claims 1 to 7, characterized in that, The gas storage tank (1209) is also equipped with an external gas supply pipeline for connecting to an external gas supply device.

9. A compressed air supply device for a mobile gas turbine generator set according to claim 8, characterized in that, The external gas supply pipeline is also equipped with a check valve (1206).

10. A compressed air supply device for a mobile gas turbine generator set according to claim 8, characterized in that, The multiple air compressors (1201) are electrically connected to the control system via junction boxes (1203).

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