Integrated gas supply device

Abstract

 This integrated gas supply device comprises: an enclosure (200); an active gas introduction port (210) and an inert gas introduction port (211) that are provided in the enclosure (200); a three-way valve (12) that is disposed in the enclosure (200), is connected to active gas supply piping (20), inert gas supply piping (21), and selected gas supply piping (24), and selectively communicates one of either the active gas supply piping (20) or the inert gas supply piping (21) with the selected gas supply piping (24); and a selected gas supply port (220) that is provided in the enclosure (200), is connected to the selected gas supply piping (24), and supplies the gas selected by the three-way valve (12).

Description

Integrated Gas Supply Device

[0001] The present disclosure relates to an integrated gas supply device.

[0002] Hydrogen-cooled turbine generators use hydrogen as a cooling medium. When hydrogen is injected into or released from a hydrogen-cooled turbine generator, carbon dioxide, an inert gas, is used as an intermediate gas to prevent the generation of a mixture of hydrogen gas and air. For this reason, two pieces of equipment are essential for hydrogen-cooled turbine generators: a hydrogen gas supply device and a carbon dioxide gas supply device.

[0003] For example, in the hydrogen-cooled turbine generator described in Patent Document 1, hydrogen gas and carbon dioxide gas are supplied separately to the hydrogen-cooled turbine generator from separately configured hydrogen gas supply devices and carbon dioxide gas supply devices using separate gas supply pipes.

[0004] JP 2011-182523 A

[0005] Therefore, the hydrogen-cooled turbine generator described in Patent Document 1 requires a hydrogen gas supply device and a carbon dioxide gas supply device, and gas supply piping is required from the cylinder room in which each gas supply device is installed to the gas supply destination, such as the hydrogen-cooled turbine generator installed in the turbine building. As a result, two gas supply devices and piping installation work are required on site, which lengthens the on-site process and causes problems such as the burden of gas supply device and piping installation work being incurred for two units.

[0006] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide an integrated gas supply device that integrates a hydrogen gas supply device and a carbon dioxide gas supply device.

[0007] The integrated gas supply device according to the present disclosure includes: a housing; an active gas inlet and an inert gas inlet provided in the housing; a three-way valve disposed within the housing and connected to an active gas supply pipe, an inert gas supply pipe, and a selective gas supply pipe, for selectively connecting either the active gas supply pipe or the inert gas supply pipe to the selective gas supply pipe; and a selective gas supply port provided in the housing and connected to the selective gas supply pipe, for supplying a gas selected by the three-way valve.

[0008] The integrated gas supply device of the present disclosure makes it possible to integrate a hydrogen gas supply device and a carbon dioxide gas supply device, thereby achieving the effect of reducing the amount of piping required for one gas supply device and from the cylinder room in which the gas supply device is installed to the hydrogen-cooled turbine generator installed inside the turbine building.

[0009] It is a schematic diagram showing the configuration of the integrated gas supply device according to embodiment 1. It is a schematic diagram showing the operation of the integrated gas supply device according to embodiment 1. It is a schematic diagram showing the operation of the integrated gas supply device according to embodiment 1. It is a schematic diagram showing the configuration of a gas supply device according to a comparative example.

[0010] 1 is a schematic diagram showing the configuration of an integrated gas supply apparatus 300 according to embodiment 1. An active gas inlet 210, an inert gas inlet 211, a selective gas supply port 220, and a gas exhaust port 221 are provided in a housing 200 of the integrated gas supply apparatus 300 according to embodiment 1.

[0011] An example of the active gas is hydrogen gas, and an example of the inert gas is carbon dioxide gas.

[0012] The active gas inlet 210 is connected by piping to an active gas cylinder 250 installed outside the integrated gas supply device 300 via an active gas side valve 251. The active gas cylinder 250 is, for example, a hydrogen gas cylinder.

[0013] The inert gas inlet 211 is connected by piping to an inert gas cylinder 260 installed outside the integrated gas supply device 300 via an inert gas side valve 261. The inert gas cylinder 260 is, for example, a carbon dioxide gas cylinder.

[0014] The selected gas supply port 220 is connected to the selected gas supply pipe 24 inside the integrated gas supply device 300 and supplies the gas selected by the three-way valve 12 (selected gas) to the outside of the integrated gas supply device 300 .

[0015] The selected gas supply port 220 is connected to a selected gas external supply pipe 27 on the external side of the integrated gas supply apparatus 300. For example, the selected gas selected by the integrated gas supply apparatus 300 is supplied to a turbine building in which a turbine generator 500 is installed, which is installed outside the integrated gas supply apparatus 300, via the selected gas external supply pipe 27 connected to the selected gas supply port 220.

[0016] The active gas inlet 210 is connected to the active gas supply pipe 20 on the inside of the integrated gas supply device 300, and is further connected to the three-way valve 12 via the active gas supply pipe 20. The active gas supply pipe 20 is provided with active gas supply valves 10 and 11 in its middle.

[0017] The inert gas inlet 211 is connected to an inert gas supply pipe 21 on the inside of the integrated gas supply device 300, and is further connected to a three-way valve 12 via the inert gas supply pipe 21. An inert gas supply valve 13 is provided midway along the inert gas supply pipe 21.

[0018] The three-way valve 12 is connected to the active gas supply pipe 20, the inert gas supply pipe 21, and the selective gas supply pipe 24. The three-way valve 12 selectively connects either the active gas supply pipe 20 or the inert gas supply pipe 21 to the selective gas supply pipe 24 by switching the three-way valve 12. In other words, by switching the three-way valve 12, it is possible to selectively flow either the active gas or the inert gas into the selective gas supply pipe 24.

[0019] As described above, the selected gas supply pipe 24 is connected to the selected gas supply port 220 and supplies the gas selected by the switching operation of the three-way valve 12 to the outside of the integrated gas supply device 300 .

[0020] A pressure gauge 50 is provided in the active gas supply pipe 20, branching off via a pressure gauge valve 14, in order to enable monitoring of the pressure of the active gas.

[0021] A pressure gauge 51 is provided in the inert gas supply pipe 21, branching off via a pressure gauge valve 15, in order to enable monitoring of the pressure of the inert gas.

[0022] A gas exhaust pipe 23 is provided branching from the active gas supply pipe 20 via an exhaust valve 16. The gas exhaust pipe 23 is connected to a gas exhaust port 221, and the gas flowing through the gas exhaust pipe 23 is exhausted to the outside via an external gas exhaust pipe 26 provided outside the integrated gas supply device 300.

[0023] The gas exhaust pipe 23 is connected to the selected gas supply pipe 24 via a safety valve 17. The setting value of the safety valve 17 is set according to the required specifications of each generator, and operates when pressure exceeding the setting value occurs in the selected gas supply pipe 24, i.e., the safety valve 17 opens. When the safety valve 17 operates, the three-way valve 12 is switched to allow inert gas to flow, and the gas is exhausted to the outside while diluting the active gas. Note that each valve may be opened and closed manually, or may be opened and closed automatically by a control device.

[0024] <Operation of Integrated Gas Supply Apparatus> The operation of the integrated gas supply apparatus 300 according to the first embodiment will be described below.

[0025] <Operation when supplying active gas> Figure 2 is a schematic diagram for explaining the operation when the integrated gas supply device 300 according to embodiment 1 supplies an active gas to the outside. In Figure 2, the valves filled in black represent a closed state, and the valves filled in white represent an open state. Note that the case where the active gas is hydrogen gas and the inert gas is carbon dioxide gas will be described as an example.

[0026] Hydrogen gas is introduced into the integrated gas supply system 300 from a hydrogen gas cylinder (active gas cylinder 250) installed outside the integrated gas supply system 300 via an active gas inlet 210. The hydrogen gas flows through an active gas supply pipe 20 and then through a selected gas supply pipe 24 selected by a three-way valve 12. The hydrogen gas selected by the integrated gas supply system 300 is further supplied via a selected gas supply port 220 and an external selected gas supply pipe 27 outside the integrated gas supply system 300 to, for example, a turbine building in which a turbine generator 500 is installed.

[0027] When hydrogen gas is supplied from the integrated gas supply device 300, the active gas side valve 251 and the active gas supply valves 10 and 11 are open, and the three-way valve 12 connects the active gas supply pipe 20 and the selective gas supply pipe 24.

[0028] <Operation when Inert Gas is Supplied> FIG. 3 is a schematic diagram for explaining the operation when the integrated gas supply device 300 according to the first embodiment supplies an inert gas.

[0029] Carbon dioxide gas is introduced into the integrated gas supply system 300 from a carbon dioxide gas cylinder (inert gas cylinder 260) installed outside the integrated gas supply system 300 via an inert gas inlet 211. The carbon dioxide gas flows through an inert gas supply pipe 21 and then through a selected gas supply pipe 24 selected by a three-way valve 12. Furthermore, the carbon dioxide gas selected by the integrated gas supply system 300 passes through a selected gas supply port 220 and an external selected gas supply pipe 27 outside the integrated gas supply system 300, and is supplied to, for example, a turbine building in which a turbine generator 500 is installed.

[0030] When carbon dioxide gas is supplied from the integrated gas supply device 300, the inert gas side valve 261 and the inert gas supply valve 13 are open, and the three-way valve 12 connects the inert gas supply pipe 21 and the selected gas supply pipe 24.

[0031] <Effects of First Embodiment> As described above, the integrated gas supply system according to the first embodiment makes it possible to integrate the active gas supply system and the inert gas supply system, which have conventionally been installed separately, and it is possible to reduce the number of gas supply systems and the piping from the cylinder room (gas supply system) to the turbine building (the supply destination of the generator, etc.), thereby achieving the effect of shortening the on-site process and reducing the burden of on-site equipment and piping installation work. Furthermore, it also has the effect of reducing the number of equipment operations during normal operation, that is, reducing the operation work of each of the active gas supply system and the inert gas supply system, and reducing the work of moving between the active gas cylinder room and the inert gas cylinder room.

[0032] Comparative Example of Embodiment 1 Figure 4 is a schematic diagram showing a gas supply device 310 that is a comparative example of embodiment 1. The gas supply device 310 is composed of two devices: a hydrogen gas supply device 311 and a carbon dioxide gas supply device 312.

[0033] The gas supply device 310 of the comparative example uses a hydrogen gas supply device 311 and a carbon dioxide gas supply device 312 that are installed separately, and therefore requires separate gas supply pipes 320, 321 that are connected to the gas supply ports 220a, 220b, respectively, and that lead to the turbine building in which the turbine generator 500 is installed. Therefore, two gas supply devices and piping installation work are required on site, which results in problems such as a longer on-site process and a greater burden on the gas supply device and piping installation work for two devices.

[0034] Furthermore, there is a problem in that two units must be operated, and the unit must also be moved between the hydrogen gas cylinder room and the carbon dioxide gas cylinder room.

[0035] Although the present disclosure describes various exemplary embodiments and examples, the various features, aspects, and functions described in one or more embodiments are not limited to application to a particular embodiment, but may be applied to the embodiments alone or in various combinations.

[0036] Therefore, countless variations not illustrated are conceivable within the scope of the technology of the present disclosure, including, for example, cases where at least one component is modified, added, or omitted, and even cases where at least one component is extracted and combined with a component of another embodiment.

[0037] 10, 11 Active gas supply valve, 12 Three-way valve, 13 Inert gas supply valve, 14, 15 Pressure gauge valve, 17 Safety valve, 20 Active gas supply pipe, 21 Inert gas supply pipe, 23 Gas exhaust pipe, 24 Selective gas supply pipe, 26 External gas exhaust pipe, 27 Selective gas external supply pipe, 50, 51 Pressure gauge, 200 Housing, 210 Active gas inlet, 211 Inert gas inlet, 220 Selective gas supply port, 220a, 220b Gas supply port, 221 Gas exhaust port, 250 Active gas cylinder, 251 Active gas side valve, 261 Inert gas side valve, 260 Inert gas cylinder, 300 Integrated gas supply device, 310 Gas supply device, 311 Hydrogen gas supply device, 312 Carbon dioxide gas supply device, 320, 321 Gas supply pipe, 500 Turbine generator

Claims

1. An integrated gas supply device comprising: a housing; an active gas inlet and an inert gas inlet provided in the housing; a three-way valve disposed within the housing and connected to an active gas supply pipe, an inert gas supply pipe, and a selective gas supply pipe, for selectively connecting either the active gas supply pipe or the inert gas supply pipe to the selective gas supply pipe; and a selective gas supply port provided in the housing and connected to the selective gas supply pipe, for supplying a gas selected by the three-way valve.

2. The integrated gas supply system according to claim 1, wherein the active gas is hydrogen gas and the inert gas is carbon dioxide gas.

3. The integrated gas supply device according to claim 1 or 2, wherein a pressure gauge is attached to each of the active gas supply pipe and the inert gas supply pipe.

4. An integrated gas supply device as described in any one of claims 1 to 3, further comprising an exhaust pipe connected at one end to the active gas supply pipe and at the other end to the inert gas supply pipe via a safety valve.

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