CN219510607U - Hydrogen gas transmission and distribution system for natural gas mixing hydrogen gas - Google Patents
Hydrogen gas transmission and distribution system for natural gas mixing hydrogen gas Download PDFInfo
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- CN219510607U CN219510607U CN202222775269.XU CN202222775269U CN219510607U CN 219510607 U CN219510607 U CN 219510607U CN 202222775269 U CN202222775269 U CN 202222775269U CN 219510607 U CN219510607 U CN 219510607U
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Abstract
The utility model provides a hydrogen gas transmission and distribution system for natural gas blended hydrogen, which comprises a safety relief valve, a conical filter, a mass flowmeter, a flow regulating valve, an emergency vent valve, an emergency cut-off valve and corresponding meters. The method is used for generating electricity by the hydrogen-doped gas turbine, is stable in operation, safe and reliable, and meets the requirements of the gas turbine on the gas quality and the gas consumption of fuel gas.
Description
Technical Field
The utility model relates to a device for generating power by a hydrogen-doped gas turbine, in particular to a hydrogen delivery and distribution system for natural gas-doped hydrogen.
Background
The natural gas power generation with outstanding environmental protection advantages, obvious energy-saving and carbon-reducing effects and remarkable peak regulation advantages is an important alternative mode of coal-fired power generation. At present, the components of hydrogen-burning machines which are put into commercial operation are three types, namely a high-proportion hydrogen fuel operating unit and a high-hydrogen fuel 6B fuel machine, wherein the operating experience is over 20 years, and the hydrogen accounts for 70-95% of the fuel. The second type is a natural gas and hydrogen blending unit, and a 7F combustion engine located in the United states burns natural gas and hydrogen blending fuel with a fuel loading ratio of 5%. The third category is gas turbine units that employ one hundred percent hydrogen technology, which is intended to increase the hydrogen firing capacity to 100% in the next decade. Based on market demand of natural gas-blended hydrogen, the hydrogen transmission and distribution system of the natural gas-blended hydrogen has wide development prospect when being used for power generation of a power station gas turbine of the natural gas-blended hydrogen.
Disclosure of Invention
The utility model aims to provide a hydrogen conveying and distributing system for natural gas blended hydrogen.
The technical scheme of the utility model is as follows: a hydrogen delivery system for natural gas blending hydrogen, comprising: the hydrogen transmission and distribution pipeline between the hydrogen inlet and the hydrogen outlet is sequentially connected with a safety relief valve, a conical filter, a mass flowmeter, an emergency shut-off valve and a flow regulating valve, wherein a ball valve A is arranged on a hydrogen transmission and distribution pipeline between the safety relief valve and the conical filter, two ends of the conical filter are connected with a differential pressure gauge in parallel through a ball valve B and a ball valve C, a nitrogen charging pipeline is connected in the hydrogen transmission and distribution pipeline between the conical filter and the mass flowmeter, the nitrogen charging pipeline A is formed by connecting a joint, a check valve and a ball valve D, a pressure transmitting pipeline A, a pressure gauge and a temperature sensor are connected in the hydrogen transmission and distribution pipeline between the mass flowmeter and the emergency shut-off valve, the pressure transmitting pipeline A is formed by connecting a pressure transmitting pipeline A, a pressure gauge and a pressure regulating valve E, a needle valve B and a ball valve F are connected between the pressure gauge and the hydrogen transmission pipeline, the ball valve G on the hydrogen transmission and the hydrogen outlet is connected with a ball valve G on the ball valve, the hydrogen transmission pipeline G on the ball valve C is connected with a ball valve C, the pressure regulating valve A is connected with a three-way valve A, a three-way valve A is connected with a pressure regulating valve A, a three-way valve A is connected with a three-way valve A, a three-way valve A is connected with a pressure regulating valve A, a three-way valve A is connected with a three-way valve A, and a three-way valve A is connected with a three-way valve, and a three-way valve A valve is connected with the pressure valve, and a three-way valve is connected with the pressure valve, and a three-way valve is connected, one end of the electromagnetic three-way valve B is communicated with the atmosphere, a differential pressure transmitter (PDT) pipeline is arranged at the inlet and outlet of the flow regulating valve, the upper end of the emergency vent pipe is a vent, the emergency vent valve is connected with the emergency vent valve, the emergency vent valve is a pneumatic ball valve connected with a valve position switch B and is communicated with an instrument pipeline through an electromagnetic three-way valve C, a pressure reducing valve B and a ball valve J, and one end of the electromagnetic three-way valve C is communicated with the atmosphere.
The utility model has the advantages that: the operation is stable, safe and reliable, and the hydrogen can be continuously conveyed. The method is used for generating power by the hydrogen-doped gas turbine of the power station, and meets the index requirement of the natural gas-doped hydrogen of the gas turbine of the power station.
Drawings
FIG. 1 is a schematic process diagram of an embodiment of the present utility model.
In the figure: 1. a hydrogen inlet, 2, a safety relief valve, 3, a ball valve A,4, a ball valve B,5, a differential pressure gauge, 6, a conical filter, 7, a ball valve C,8, a connector, 9, a check valve, 10, a nitrogen charging valve A,11, a ball valve D,12, a hydrogen delivery and distribution pipeline, 13, a pressure transmitter, 14, a needle valve A,15, a mass flowmeter, 16, a ball valve E,17, a pressure transmitting pipeline A,18, a pressure gauge, 19, a needle valve B,20, a ball valve F,21, a temperature sensor (21), 22, a three-way electromagnetic valve A,23, a three-way valve, 24, an emergency cut-off valve, 25, a valve switch A,26, a nitrogen charging pipeline B,27, pressure transmission pipelines B,28, emergency vent pipelines, 29, ball valves I,30, valve position transmitters, 31, filters B,32, flow regulating valves, 33, pressure reducing valves A,34, pressure stabilizing quick discharging valves, 35, electromagnetic three-way valves B,36, nitrogen charging pipelines C,37, pressure transmission pipelines C,38, ball valves G,39, hydrogen outlets, 40, differential pressure transmitter (PDT) pipelines, 41, emergency vent valves, 42, vent ports, 43, valve position switches B,44, electromagnetic three-way valves C,45, pressure reducing valves B,46, ball valves J,47, instrument gas pipelines, 48, ball valves H,49, filters A,50 and needle valves C.
Detailed Description
The embodiments are described below with reference to the accompanying drawings:
FIG. 1 is a schematic process diagram of an embodiment of the present utility model
The safety relief valve 2 is arranged at the hydrogen inlet 1 of the hydrogen transmission and distribution system for natural gas mixing hydrogen, when the incoming pressure is greater than the design pressure of the system, the safety relief valve 2 automatically takes off the discharged gas, the downstream equipment is prevented from being damaged by overpressure, and the take-off pressure of the safety relief valve 2 is the design pressure of the system. The conical filter 6 is used to remove impurities entrained in the hydrogen during transport. The gas consumption of the hydrogen is counted by the mass flowmeter 15, and the mass flowmeter 15 is suitable for small flow metering and has high precision. A downstream pressure gauge 18, a pressure transmitter 13, a temperature sensor 21 for detecting the temperature and pressure of the hydrogen gas. The number of meters can be adjusted according to the requirements of safe production. The amount of hydrogen gas is controlled by a flow rate control valve 32, and an emergency shut-off valve 24 and an emergency vent valve 41 are installed on the outlet side of the gas supply system. The flow regulator 32 has a reverse flow pressure differential, and when the outlet pressure of the flow regulator 32 is greater than the inlet pressure, the difference is greater than the reverse flow pressure differential, causing a reverse flow of gas. To preclude this, a differential pressure transmitter (PDT) line 40 is installed at the inlet and outlet of the flow regulator valve 32. The flow regulating valve 32 controls the opening of the valve according to the mixing ratio, so that the mixed fuel gas meets the requirement of the fuel gas for the fuel white index. On the inlet and outlet sides of the flow regulating valve 32, 3 differential pressure transmitter (PDT) lines are installed. When 2 differential pressure transmitters out of the 3 differential pressure transmitter (PDT) lines exceed the differential pressure set point alarm, the control system automatically closes the flow regulating valve 32. The differential pressure set point is the reverse differential pressure of the valve.
The emergency cut-off valve 24 is used as a safety device, and when emergency working conditions such as fire and pressure difference alarm of the flow regulating valve 32 occur, the emergency cut-off valve 24 can be automatically closed to protect the safety of downstream devices. A mechanical safety bleed valve 2 is mounted on the hydrogen inlet line. The set pressure is the design pressure of the hydrogen system. When the incoming air pressure exceeds the set pressure of the safety relief valve 2, the safety relief valve 2 automatically jumps, and redundant gas is discharged to protect downstream equipment.
Claims (1)
1. A hydrogen delivery system for natural gas blending hydrogen, comprising: the hydrogen delivery and distribution pipeline (12) between the hydrogen inlet (1) and the hydrogen outlet (39) is sequentially connected with a safety relief valve (2), a conical filter (6), a mass flowmeter (15), an emergency stop valve (24) and a flow regulating valve (32), a ball valve A (3) is arranged on the hydrogen delivery and distribution pipeline (12) between the safety relief valve (2) and the conical filter (6), two ends of the conical filter (6) are connected with a differential pressure gauge (5) through a ball valve B (4) and a ball valve C (7) in parallel, a nitrogen charging pipeline A (10) is connected in the hydrogen delivery and distribution pipeline (12) between the conical filter (6) and the mass flowmeter (15), the nitrogen charging pipeline A (10) is formed by connecting a joint (8), a check valve (9) and a ball valve D (11), a pressure transmitting pipeline A (17), a pressure gauge (18) and a temperature sensor (21) are connected in the hydrogen delivery and distribution pipeline (12) between the mass flowmeter (15) and the emergency stop valve (24), and the pressure transmitting pipeline A (17), the pressure transmitting pipeline A (13) and the ball valve D (16) are connected with the pressure transmitting pipeline E (19) by the ball valve C (13) and the pressure transmitting pipeline E (16) in a connecting mode The ball valve F (20), the hydrogen transmission and distribution pipeline (12) between the emergency shut-off valve (24) and the flow regulating valve (32) is connected with a nitrogen charging pipeline B (26), a pressure transmitting pipeline B (27) and an emergency emptying pipeline (28), the hydrogen transmission and distribution pipeline (12) at the hydrogen outlet (39) is connected with a ball valve G (38), the hydrogen transmission and distribution pipeline (12) between the flow regulating valve (32) and the ball valve G (38) is connected with a nitrogen charging pipeline C (36) and a pressure transmitting pipeline C (37), the emergency shut-off valve (24) is a pneumatic ball valve connected with a valve switch A (25) and is communicated with an instrument air pipeline (47) through a three-way valve (23), a three-way electromagnetic valve A (22), a needle valve C (50), a filter A (49) and a ball valve H (48), the three-way valve (23) is connected with the three-way electromagnetic valve A (22) and is communicated with the atmosphere, the flow regulating valve (32) is a pneumatic ball valve connected with a pneumatic ball valve of a pressure regulator (30), a three-way electromagnetic valve B (35), a pressure-stabilizing valve B (35) and a pressure-stabilizing valve I is communicated with one end of the electromagnetic valve (35) and a pressure-stabilizing valve I (35) and one end of the electromagnetic valve I is communicated with the electromagnetic valve (35, a differential pressure transmitter pipeline (40) is arranged at the inlet and outlet of the flow regulating valve (32), the upper end of the emergency emptying pipeline (28) is provided with an emptying port (42), wherein
The emergency emptying valve (41) is connected, the emergency emptying valve (41) is a pneumatic ball valve connected with a valve position switch B (43), and is communicated with an instrument air pipeline (47) through an electromagnetic three-way valve C (44), a pressure reducing valve B (45) and a ball valve J (46), and one end of the electromagnetic three-way valve C (44) is communicated with the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222775269.XU CN219510607U (en) | 2022-10-21 | 2022-10-21 | Hydrogen gas transmission and distribution system for natural gas mixing hydrogen gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222775269.XU CN219510607U (en) | 2022-10-21 | 2022-10-21 | Hydrogen gas transmission and distribution system for natural gas mixing hydrogen gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219510607U true CN219510607U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222775269.XU Active CN219510607U (en) | 2022-10-21 | 2022-10-21 | Hydrogen gas transmission and distribution system for natural gas mixing hydrogen gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219510607U (en) |
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2022
- 2022-10-21 CN CN202222775269.XU patent/CN219510607U/en active Active
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