Gas turbine gas supply system adapting to wide-range pressure

Abstract

The utility model discloses a gas turbine gas supply system adapting to wide-range pressure, which comprises a main gas supply pipeline, a main shut-off valve, a first common pressure control valve and a main fuel flow control valve are sequentially arranged on the main gas supply pipeline, a burner main nozzle is arranged at the output end of the main gas supply pipeline, and a discharge valve is connected in parallel at the main shut-off valve; existing systems and equipment are modified according to the concept of a gas turbine gas supply system adapting to wide-range pressure, safe and stable operation of a unit under the condition that the fluctuation range of incoming gas pressure is large can be guaranteed, economic cost can be saved, the structure is simplified, the probability of system faults caused by faults of single equipment is reduced, and the system reliability is improved. And the safety and the reliability of a corresponding process system are also improved.

Description

Technical Field

[0001] This utility model relates to the field of gas supply technology, and in particular to a gas turbine gas supply system adaptable to a wide range of pressures. Background Technology

[0002] With the rapid development of the new energy industry, the power grid structure and its safe and stable operation are under tremendous pressure. Gas turbines, as a supporting component of the power grid, play a crucial role not only in rapid start-up and shutdown and deep peak shaving, but also in optimizing the energy structure, promoting energy conservation and emission reduction, alleviating the power supply and demand imbalance, and ensuring the safe and stable operation of the power grid. Especially under the "dual carbon" background, gas turbine distributed energy systems are receiving increasing attention. China's heavy-duty gas turbine generator sets mainly rely on imports, with GE, Siemens, and Mitsubishi dominating the market. The core design of gas turbines and related auxiliary equipment is not yet fully mastered, which to some extent restricts the development of the gas-fired power generation industry. Natural gas for power plants is supplied by gas companies, and the gas turbine supply pressure is frequently affected by fluctuations in the gas pipeline network pressure. Therefore, designing a safe and reliable gas turbine supply system is crucial for the safe and stable operation of the unit. Problems with the gas supply system will directly affect the normal operation of the unit, causing huge economic losses to enterprises and placing enormous pressure on the safe and stable operation of the power grid. Utility Model Content

[0003] The main objective of this invention is to provide a gas turbine gas supply system that can adapt to a wide range of pressures, thereby solving existing technical problems.

[0004] To achieve the above objectives, this utility model provides a gas turbine gas supply system adaptable to a wide pressure range, including a main gas supply pipeline. The main gas supply pipeline is sequentially provided with a main shut-off valve, a first common pressure control valve, and a main fuel flow control valve. The output end of the main gas supply pipeline is provided with a burner main nozzle, and a discharge valve is connected in parallel at the main shut-off valve.

[0005] Furthermore, it also includes a second common pressure control valve, which serves as a backup to the first common pressure control valve.

[0006] Furthermore, it also includes an auxiliary gas supply line, which is equipped with an auxiliary fuel flow control valve, and the output end of the auxiliary gas supply line is equipped with a burner auxiliary nozzle.

[0007] Furthermore, the main shut-off valve, the first common pressure control valve, the second common pressure control valve, the main fuel flow control valve, and the auxiliary fuel flow control valve form a control loop and an interlocking loop.

[0008] Furthermore, filters are installed on the main gas supply line and the auxiliary gas supply line.

[0009] Furthermore, temperature and humidity sensors are installed on the main gas supply line and the auxiliary gas supply line.

[0010] Furthermore, pressure sensors are installed on the main gas supply line and the auxiliary gas supply line.

[0011] Furthermore, check valves are installed on the main gas supply line and the auxiliary gas supply line.

[0012] The beneficial effects of this utility model are reflected in:

[0013] This utility model modifies existing systems and equipment based on the concept of a gas turbine gas supply system that adapts to a wide range of pressures. It can ensure the safe and stable operation of the unit under conditions of large fluctuations in incoming gas pressure, save economic costs, simplify the structure, reduce the probability of system failure caused by the failure of a single piece of equipment, and improve the safety and reliability of the corresponding process system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Main gas supply line; 2. Main shut-off valve; 3. First common pressure control valve; 4. Main fuel flow control valve; 5. Main burner nozzle; 6. Exhaust valve; 7. Second common pressure control valve; 8. Auxiliary gas supply line; 9. Auxiliary burner nozzle; 10. Air filter; 11. Temperature and humidity sensor; 12. Pressure sensor; 13. Check valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1 This utility model provides a gas turbine gas supply system that can adapt to a wide range of pressures, including a main gas supply pipeline 1, which is connected to a gas storage tank. The main gas supply pipeline 1 is provided with a main shut-off valve 2, a first common pressure control valve 3 and a main fuel flow control valve 4 in sequence. The output end of the main gas supply pipeline 1 is provided with a burner main nozzle 5, and a discharge valve 6 is connected in parallel at the main shut-off valve 2.

[0019] This utility model modifies existing systems and equipment based on the concept of a gas turbine gas supply system that adapts to a wide range of pressures. It can ensure the safe and stable operation of the unit under conditions of large fluctuations in incoming gas pressure, save economic costs, simplify the structure, reduce the probability of system failure caused by the failure of a single piece of equipment, and improve the safety and reliability of the corresponding process system.

[0020] In one embodiment, a second common pressure control valve 7 is also included, serving as a backup to the first common pressure control valve 3. This configuration improves the system's fault tolerance, allowing the second common pressure control valve 7 to be used promptly in the event of a failure of the first common pressure control valve 3, ensuring uninterrupted normal operation of the system.

[0021] In one embodiment, an auxiliary gas supply line 8 is also included, which is provided with an auxiliary fuel flow control valve 9, and the output end of the auxiliary gas supply line 8 is provided with a burner auxiliary nozzle 9.

[0022] In one embodiment, the main shut-off valve 2, the first common pressure control valve 3, the second common pressure control valve 7, the main fuel flow control valve 4, and the auxiliary fuel flow control valve 9 form a control loop and an interlocking loop. This configuration ensures that the entire gas supply system is interconnected and has a backup line. When a gas supply line fails, the backup line can be used promptly to supply gas, thus ensuring the stability of the gas supply system.

[0023] In one embodiment, filters 10 are provided on the main gas supply line 1 and the auxiliary gas supply line 8. This configuration in this embodiment can filter the gas in the pipeline, ensuring the purity of the gas and thus ensuring the smooth operation of the pipeline.

[0024] In one embodiment, temperature and humidity sensors 11 are installed on the main gas supply line 1 and the auxiliary gas supply line 8. This configuration allows for real-time monitoring of temperature and humidity changes in the pipelines, assisting staff in understanding the pipeline's operational status.

[0025] It should be noted that those skilled in the art can select a suitable temperature and humidity sensor model 11 from the market.

[0026] In one embodiment, pressure sensors 12 are installed on the main gas supply line 1 and the auxiliary gas supply line 8. This configuration allows for real-time detection of pressure changes in the pipelines, enabling staff to understand these changes and adjust accordingly, thereby improving safety.

[0027] It should be noted that those skilled in the art can select a suitable pressure sensor model 12 from the market.

[0028] In one embodiment, check valves 13 are provided on the main gas supply line 1 and the auxiliary gas supply line 8. This configuration in this embodiment can prevent gas backflow in the gas supply lines and avoid gas supply failure.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas turbine gas supply system adaptable to a wide pressure range, characterized in that: It includes a main gas supply line (1), on which a main shut-off valve (2), a first common pressure control valve (3) and a main fuel flow control valve (4) are sequentially provided. The output end of the main gas supply line (1) is provided with a burner main nozzle (5), and a discharge valve (6) is connected in parallel at the main shut-off valve (2).

2. The gas turbine gas supply system adaptable to a wide pressure range as described in claim 1, characterized in that: It also includes a second common pressure control valve (7), which serves as a backup to the first common pressure control valve (3).

3. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 2, characterized in that: It also includes an auxiliary gas supply line (8), which is equipped with an auxiliary fuel flow control valve (9), and the output end of the auxiliary gas supply line (8) is equipped with a burner auxiliary nozzle (9).

4. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 3, characterized in that: The main shut-off valve (2), the first common pressure control valve (3), the second common pressure control valve (7), the main fuel flow control valve (4), and the auxiliary fuel flow control valve (9) form a control loop and an interlocking loop.

5. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 3, characterized in that: The main gas supply line (1) and the auxiliary gas supply line (8) are equipped with filters (10).

6. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 3, characterized in that: Temperature and humidity sensors (11) are installed on the main gas supply line (1) and the auxiliary gas supply line (8).

7. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 3, characterized in that: Pressure sensors (12) are installed on the main gas supply line (1) and the auxiliary gas supply line (8).

8. A gas turbine gas supply system adaptable to a wide pressure range as described in claim 3, characterized in that: Check valves (13) are provided on the main gas supply line (1) and the auxiliary gas supply line (8).

Images