Dual-system natural gas turbine debugging pry

Abstract

The utility model relates to the field of natural gas turbine debugging, in particular to a dual-system natural gas turbine debugging skid which comprises a skid-mounted body, a first replacement system, a second replacement system and a heating system are arranged in the skid-mounted body, each of the first replacement system and the second replacement system comprises a gas inlet pipe, and the gas inlet pipes are connected with a main gas supply pipe. The upper end of the tee joint is connected with a high-altitude discharge pipe through a first emptying pipeline, and the lower end of the tee joint is connected with an air supply pipeline; the air supply pipelines of the first replacement system and the second replacement system are respectively connected with the heating system through a first air delivery pipe, a first transition pipe is arranged between the air supply pipeline of the first replacement system and the first air delivery pipe, and stop valves are arranged on the first emptying pipeline and the air supply pipelines. According to the utility model, one natural gas conveying vehicle is used for conveying gas, and the other natural gas conveying vehicle is used for preparing.

Description

Technical Field

[0001] This utility model relates to the field of natural gas turbine commissioning, specifically to a dual-system natural gas turbine commissioning skid. Background Technology

[0002] Natural gas turbines deliver natural gas from a natural gas delivery vehicle to the gas-consuming device. Once the device starts, a sufficient gas supply must be ensured, and the supply must not be interrupted. However, currently used natural gas delivery vehicles have fixed specifications and a fixed natural gas storage capacity. During the gas supply process, the flow rate may drop sharply or even the supply may be interrupted, making it impossible to continuously supply gas to the device. If the gas-consuming device needs to be shut down urgently due to insufficient natural gas supply in the delivery vehicle, the impact will be significant. Utility Model Content

[0003] The purpose of this invention is to provide a dual-system natural gas turbine commissioning skid, which solves the problem of fixed vehicle changeover time affecting gas delivery efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A dual-system natural gas turbine commissioning skid includes a skid body. The skid body houses a first replacement system, a second replacement system, and a heating system. Both the first and second replacement systems include an intake pipe connected to a main gas delivery pipe. A tee is located at the end of the main gas delivery pipe. The upper end of the tee is connected to a high-altitude exhaust pipe via a first vent pipe, and the lower end is connected to a gas delivery pipe. The gas delivery pipes of the first and second replacement systems are respectively connected to the heating system via a first gas transmission pipe. A first transition pipe is provided between the gas delivery pipe of the first replacement system and the first gas transmission pipe. Both the first vent pipe and the gas delivery pipe are equipped with shut-off valves.

[0006] Furthermore, the gas supply pipeline has a vent port, which is connected to a second vent pipeline. The second vent pipeline of the first replacement system is connected to the connecting pipe. The second vent pipeline of the second replacement system is connected to the second vent pipeline of the first replacement system through a second transition pipe. The connecting pipe is provided with an impurity outlet and a natural gas outlet. The impurity outlet is connected to a high-altitude discharge pipe through an exhaust pipe, and the natural gas outlet is connected to the main natural gas discharge pipeline. The second vent pipeline is provided with a solenoid valve and a pressure reducing valve.

[0007] Furthermore, the heating system includes a first heating tank and a second heating tank; both the first heating tank and the second heating tank have an air inlet and an air outlet, the air inlet of the first heating tank is connected to a first air supply pipe, and the air outlet of the first heating tank is connected to a first main supply pipe.

[0008] Furthermore, the first main delivery pipe connects to the first delivery branch and the second delivery branch, and the first delivery branch and the second delivery branch are respectively connected to the air inlet of the second heating tank through the second gas delivery pipe.

[0009] Furthermore, along the route of natural gas from the first heating tank to the second heating tank, a high-pressure filter, a high-pressure reducing valve, a flow regulating valve, and a flow meter are sequentially installed on the first delivery branch. A first venting branch is also installed on the first delivery branch, which is connected to the high-altitude discharge pipe. A safety valve and a ball valve are installed on the first venting branch, with the ball valve located below the safety valve.

[0010] Furthermore, two ball valves are provided between the high-pressure reducing valve and the flow regulating valve, and the connection point between the first venting branch and the first conveying branch is located between the two ball valves; a first connecting pipe is also provided between the two ball valves, and the two ends of the first connecting pipe are respectively connected to the first conveying branch and the second conveying branch; two ball valves are provided between the flow regulating valve and the flow meter, and a second connecting pipe is provided between the two ball valves, and the two ends of the second connecting pipe are respectively connected to the first conveying branch and the second conveying branch.

[0011] Furthermore, both the first and second heating tanks are equipped with heating coils, through which natural gas passes, and on the outside of the heating coils is a heating medium; both the first and second heating tanks are equipped with temperature gauges.

[0012] Furthermore, the outlet of the second heating tank is equipped with a second main delivery pipe, which has a sludge discharge port and an exhaust port. The sludge discharge port is connected to the high-altitude exhaust pipe through a second venting branch. A tee is provided on the exhaust port, one end of which is connected to the nitrogen source through a nitrogen branch, and the other end is connected to the main natural gas discharge pipeline through an exhaust pipe.

[0013] Furthermore, both the first and second replacement systems are equipped with nitrogen inlet pipes on their main gas supply pipes. The nitrogen inlet pipe of the first replacement system is connected to the nitrogen tank through the main nitrogen delivery pipe, and the nitrogen inlet pipe of the second replacement system is connected to the nitrogen tank through the main nitrogen delivery pipe. Each nitrogen inlet pipe is equipped with a ball valve and a shut-off valve, with the ball valve located on both sides of the corresponding shut-off valve.

[0014] Furthermore, the skid-mounted unit is equipped with an odorizer, which is connected to the main natural gas discharge pipeline to prevent natural gas leakage.

[0015] By adopting the above technical solution, the beneficial technical effects of this utility model are:

[0016] This invention features two replacement systems, each capable of connecting to a natural gas delivery vehicle to deliver natural gas to the gas-consuming device. Each system can also independently deliver gas. While one vehicle is delivering gas, the other can connect to the device and adjust its parameters, ready to supply gas at any time. If the first vehicle runs out of gas and its flow rate decreases, the other vehicle can then begin supplying gas, ensuring continuous operation of the gas-consuming device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a commissioning skid for a dual-system natural gas turbine.

[0018] Figure 2 This is a schematic diagram of the first and second replacement systems.

[0019] Figure 3 This is a schematic diagram of the connection of the first heating tank.

[0020] Figure 4 This is a schematic diagram of the connection to the second heating tank.

[0021] Figure 5 This is a connection diagram for a gas detector. Detailed Implementation

[0022] like Figure 1As shown, a dual-system natural gas turbine commissioning skid includes a skid body 1. A first replacement system 2, a second replacement system 3, and a heating system 4 are disposed within the skid body 1. The first replacement system 2 and the second replacement system 3 are arranged side-by-side on the skid body 1. Both the first replacement system 2 and the second replacement system 3 include an intake pipe 11, which is used to connect to a natural gas delivery vehicle. Natural gas from the natural gas delivery vehicle enters the skid body 1 through the intake pipe 11. The intake pipe 11 is connected to a main gas delivery pipe 12. A tee is provided at the end of the main gas delivery pipe 12. The upper end of the tee is connected to a high-altitude exhaust pipe 14 via a first vent pipe 13, and the lower end is connected to a gas delivery pipe 15. The gas delivery pipes 15 of the first replacement system 2 and the second replacement system 3 are respectively connected to the heating system 4 via a first gas transmission pipe 16. The gas delivery pipe 15 of the first replacement system 2 is connected to the first gas transmission pipe 16. A first transition pipe 17 is provided between them. Both the first vent pipe 13 and the gas supply pipe 15 are equipped with shut-off valves 100. The heating system 4 includes a first heating tank 41 and a second heating tank 42. Both the first heating tank 41 and the second heating tank 42 have inlets and outlets. The inlet of the first heating tank 41 is connected to the first gas supply pipe 16, and the outlet of the first heating tank 41 is connected to the first main supply pipe 43. Natural gas enters the main supply pipe 12 from the inlet pipe 11, then enters the gas supply pipe 15 from the main supply pipe 12, and finally enters the heating system 4 through the first main supply pipe 43 for heating. Both the first heating tank 41 and the second heating tank 42 are equipped with heating coils. Natural gas passes through the heating coils, and the outside of the heating coils has a heating medium. Both the first heating tank 41 and the second heating tank 42 are equipped with temperature gauges. The first heating tank 41 is used to heat the natural gas to prevent ice blockage and ensure the smooth flow of natural gas. The second heating tank 42 is used to precisely control the temperature of the natural gas, facilitating its subsequent use. After the heating system 4 has finished heating the natural gas, it is discharged through the main natural gas discharge pipe 19.

[0023] like Figure 2As shown, both the first replacement system 2 and the second replacement system 3 have nitrogen inlet pipes 21 installed on their main gas supply pipes 12. The nitrogen inlet pipe 21 of the first replacement system 2 is connected to the nitrogen tank 23 via the main nitrogen delivery pipe 22, and the nitrogen inlet pipe 21 of the second replacement system 3 is connected to the nitrogen tank 23 via the main nitrogen delivery pipe 22. Each nitrogen inlet pipe 21 is equipped with a ball valve 101 and a shut-off valve 102, with the ball valve 101 located on both sides of the corresponding shut-off valve 102. Before natural gas transportation, the air in the device needs to be replaced. After the natural gas transport vehicle is connected to the inlet pipe 11, the replacement is started. At this time, the shut-off valve 100 located on the first vent pipe 13 is in the closed state, preventing the first vent pipe 13 from being connected to the high-altitude discharge pipe 14. The ball valve 101 and shut-off valve 102 on the nitrogen inlet pipe 21 are open, connecting the nitrogen inlet pipe 21 to the main gas delivery pipe 12. Nitrogen from the nitrogen tank 23 fills the main gas delivery pipe 12 through the nitrogen inlet pipe 21 until the pressure gauge connected to the main gas delivery pipe 12 stabilizes, indicating stable pressure within the main gas delivery pipe 12. The shut-off valve 100 on the first vent pipe 13 is opened, connecting the first vent pipe 13 to the high-altitude exhaust pipe 14. The ball valve 101 and shut-off valve 102 on the nitrogen inlet pipe 21 are closed, disconnecting the nitrogen inlet pipe 21 from the main gas delivery pipe 12. The purged gas will be discharged at high altitude through the high-altitude exhaust pipe 14 without causing pollution. The first replacement system 2 and the second replacement system 3 can independently complete the replacement process by controlling the shut-off valve 102 on the nitrogen inlet pipe 21. When the first replacement system 2 is transporting natural gas, the second replacement system 3 replaces the air in the pipeline, so that the natural gas transport vehicle connected to the second replacement system 3 can achieve the purpose of supplying gas at any time.

[0024] like Figure 5 As shown, the gas supply pipeline 15 has a vent port, which is connected to the second vent pipeline 31. The second vent pipeline 31 of the first replacement system 2 is connected to the connecting pipe 32. The second vent pipeline 31 of the second replacement system 3 is connected to the second vent pipeline 31 of the first replacement system 2 through a second transition pipe. During the replacement process, replaced gas will pass through the second vent pipeline 31. The connecting pipe 32 is equipped with an impurity outlet and a natural gas outlet. The impurity outlet is connected to the high-altitude emission pipe 14 through an exhaust pipe 33. The second vent pipeline 31 is connected to the exhaust pipe 33. After the gas detector 34 installed on the exhaust pipe 33 detects that the gas has reached the target concentration, the gas detector 34 will emit a warning sound or provide a lighting signal for the warning light electrically connected to the gas detector 34. How the gas detector 34 uses a signal to light up the warning light is existing technology and will not be explained here. The natural gas outlet is connected to the main natural gas discharge pipeline 19. The second vent pipeline 31 is equipped with a solenoid valve and a pressure reducing valve.

[0025] like Figure 3As shown, the first main delivery pipe 43 connects to the first delivery branch 51 and the second delivery branch 52. The first delivery branch 51 and the second delivery branch 52 are respectively connected to the inlet of the second heating tank 42 through the second gas delivery pipe. Natural gas heated by the first heating tank 41 can be delivered to the second heating tank 42 through either the first delivery branch 51 or the second delivery branch 52. When the commonly used first delivery branch 51 fails, natural gas is delivered to the second heating tank 42 using the second delivery branch 52. Along the route of natural gas from the first heating tank 41 to the second heating tank 42, the first delivery branch 51 is sequentially equipped with a high-pressure filter 53, a high-pressure reducing valve 54, a flow regulating valve 55, and a flow meter 56. The high-pressure filter 53 is used to filter impurities in the pipeline, the flow regulating valve 55 is used to regulate the flow rate of natural gas, and the flow meter 56 is used to calculate the outflow of natural gas.

[0026] like Figure 4 As shown, a first venting branch 57 is provided on the first conveying branch 51, and the first venting branch 57 is connected to the high-altitude discharge pipe 14. The first venting branch 57 can discharge the gas in the first conveying branch 51 through the high-altitude discharge pipe 14. A safety valve and a ball valve 101 are provided on the first venting branch 57, with the ball valve 101 located below the safety valve. Two ball valves 101 are provided between the high-pressure reducing valve 54 and the flow regulating valve 55. The connection point between the first venting branch 57 and the first conveying branch 51 is located between the two ball valves 101. A first connecting pipe 58 is also provided between the two ball valves 101, and the two ends of the first connecting pipe 58 are connected to the first conveying branch 51 and the second conveying branch 52, respectively. Two ball valves 101 are provided between the flow regulating valve 55 and the flow meter 56. A second connecting pipe 59 is provided between the two ball valves 101, and the two ends of the second connecting pipe 59 are connected to the first conveying branch 51 and the second conveying branch 52, respectively. Natural gas passing through the first heating tank 41 will enter the second heating tank 42 for precise heating via the commonly used first delivery branch 51. However, if the first delivery branch 51 fails, natural gas will enter the second heating tank 42 via the first connecting pipe 58 or the second connecting pipe 59 by controlling the ball valve 101.

[0027] The second heating tank 42 is equipped with a second main delivery pipe 61 at its outlet. The second main delivery pipe 61 has a sludge discharge port and an exhaust port. The sludge discharge port is connected to the high-altitude exhaust pipe 14 through the second exhaust branch 62. A tee is provided on the exhaust port. One end of the tee is connected to the nitrogen source through the nitrogen branch 63, and the other end is connected to the natural gas main exhaust pipe 19 through the exhaust pipe 64. Before shutting down the device, the gas in the second main delivery pipe 61 needs to be replaced. First, open the shut-off valve 102 on the nitrogen branch 63 to connect the nitrogen branch 63 to the nitrogen source. Nitrogen will fill the second main delivery pipe 61. After the pressure stabilizes, it proves that the second main delivery pipe 61 is full of nitrogen. At this time, close the shut-off valve 102 on the nitrogen branch 63 to disconnect the nitrogen branch 63 from the nitrogen source. Open the shut-off valve 102 on the second vent branch 62 to connect the second vent branch 62 to the high-altitude discharge pipe 14 and discharge the gas in the pipeline from the high-altitude discharge pipe 14. After multiple cycles, the replacement is completed.

[0028] The skid-mounted body 1 is equipped with an odorizer 105, which is connected to the main natural gas discharge pipe 19. When natural gas leaks from the main natural gas discharge pipe 19, the gas in the odorizer 105 will be exposed along with the natural gas and produce an irritating odor, alerting staff that a natural gas leak may have been detected, thus effectively preventing natural gas leaks.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A dual-system natural gas turbine commissioning skid, characterized in that, The system includes a skid-mounted body, within which are configured a first replacement system, a second replacement system, and a heating system. Both the first and second replacement systems include an air inlet pipe connected to a main air supply pipe. The main air supply pipe has a tee at its end, with its upper end connected to a high-altitude exhaust pipe via a first vent pipe and its lower end connected to an air supply pipe. The air supply pipes of the first and second replacement systems are respectively connected to the heating system via a first air delivery pipe. A first transition pipe is provided between the air supply pipe of the first replacement system and the first air delivery pipe. Both the first vent pipe and the air supply pipe are equipped with shut-off valves.

2. The dual-system natural gas turbine commissioning skid according to claim 1, characterized in that, The gas supply pipeline has a vent port, which is connected to a second vent pipeline. The second vent pipeline of the first replacement system is connected to the connecting pipe. The second vent pipeline of the second replacement system is connected to the second vent pipeline of the first replacement system through a second transition pipe. The connecting pipe is equipped with an impurity outlet and a natural gas outlet. The impurity outlet is connected to a high-altitude discharge pipe through an exhaust pipe, and the natural gas outlet is connected to the main natural gas discharge pipeline. The second vent pipeline is equipped with a solenoid valve and a pressure reducing valve.

3. The dual-system natural gas turbine commissioning skid according to claim 2, characterized in that, The heating system includes a first heating tank and a second heating tank; both the first heating tank and the second heating tank have an air inlet and an air outlet, the air inlet of the first heating tank is connected to a first air supply pipe, and the air outlet of the first heating tank is connected to a first main supply pipe.

4. The dual-system natural gas turbine commissioning skid according to claim 3, characterized in that, The first main delivery pipe connects to the first delivery branch and the second delivery branch. The first delivery branch and the second delivery branch are respectively connected to the air inlet of the second heating tank through the second gas delivery pipe.

5. The dual-system natural gas turbine commissioning skid according to claim 4, characterized in that, Along the route of natural gas from the first heating tank to the second heating tank, a high-pressure filter, a high-pressure reducing valve, a flow regulating valve, and a flow meter are sequentially installed on the first transmission branch. A first venting branch is also installed on the first transmission branch, which is connected to the high-altitude discharge pipe. A safety valve and a ball valve are installed on the first venting branch, with the ball valve located below the safety valve.

6. The dual-system natural gas turbine commissioning skid according to claim 5, characterized in that, Two ball valves are provided between the high-pressure reducing valve and the flow regulating valve. The connection point between the first venting branch and the first conveying branch is located between the two ball valves. A first connecting pipe is also provided between the two ball valves. The two ends of the first connecting pipe are respectively connected to the first conveying branch and the second conveying branch. Two ball valves are provided between the flow regulating valve and the flow meter. A second connecting pipe is provided between the two ball valves. The two ends of the second connecting pipe are respectively connected to the first conveying branch and the second conveying branch.

7. A dual-system natural gas turbine commissioning skid according to claim 5, characterized in that, Both the first and second heating tanks are equipped with heating coils, through which natural gas passes, and on the outside of the heating coils is a heating medium; both the first and second heating tanks are equipped with temperature gauges.

8. The dual-system natural gas turbine commissioning skid according to claim 7, characterized in that, The second heating tank is equipped with a second main delivery pipe at its outlet. The second delivery pipe has a sludge discharge port and an exhaust port. The sludge discharge port is connected to the high-altitude exhaust pipe through a second venting branch. A tee is installed on the exhaust port. One end of the tee is connected to the nitrogen source through a nitrogen branch, and the other end is connected to the main natural gas discharge pipeline through an exhaust pipe.

9. A dual-system natural gas turbine commissioning skid according to claim 1, characterized in that, Both the first and second replacement systems are equipped with nitrogen inlet pipes on their main gas supply pipes. The nitrogen inlet pipe of the first replacement system is connected to the nitrogen tank through the main nitrogen delivery pipe, and the nitrogen inlet pipe of the second replacement system is connected to the nitrogen tank through the main nitrogen delivery pipe. Each nitrogen inlet pipe is equipped with a ball valve and a shut-off valve, with the ball valve located on both sides of the corresponding shut-off valve.

10. A dual-system natural gas turbine commissioning skid according to claim 1, characterized in that, The skid-mounted unit is equipped with an odorizer, which is connected to the main natural gas discharge pipeline to prevent natural gas leakage.

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