JP2010019334A - Gas charging feeding method and gas charging feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of filters for foreign substance removal, and to prevent foreign substance inflow into a main stop valve. <P>SOLUTION: Gas is concurrently charged into a plurality of gas containers 1, 2 from a gas feeding part 3, and gas removed of foreign substances is fed to a gas consumption part 4 from the charged gas containers 1, 2. In gas feed paths 12 (12a, 12b) feeding gas to the gas consumption part 4, after removing foreign substances from the gas including foreign substances charged into the gas containers 1, 2 in the containers by a filter 9, the gas not mixed with the foreign substances is set to the main stop valve 10, and the gas is fed to the gas consumption part 4 via a first check valve 11 regulating a flow direction of the gas from the main stop valve 10. In gas charging paths 8 (8a, 8b) charging the gas into the gas containers 1, 2 from the gas feeding part 3, gas is bypassed so as to flow to the filter 9 and the main stop valve 10 provided in the gas feed paths 12 and the gas is charged into the gas containers 1, 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gas filling and supplying method and a gas filling and supplying device, and more particularly to a technique for preventing foreign matter from flowing into a main stop valve.

In a gas filling supply system in which a plurality of gas containers are simultaneously filled with gas from a gas supply unit, and foreign substances mixed in the filled gas are removed and supplied to a gas consumption unit such as an engine, A filling path (filling flow path) to the gas container and a supply path (supply flow path) from the gas container to the gas consuming unit are used as a common path (for example, described in Patent Document 1).
JP 2002-115798 A

  However, in the conventional gas filling and supplying system, in order to prevent foreign matters contained in the gas from flowing into the main stop valve provided in the supply path, foreign matters contained in the filling gas are removed upstream of the main stop valve. It is necessary to provide a filter for removing foreign substances contained in the gas supplied from the gas container downstream of the main stop valve.

  Accordingly, the present invention has been proposed in view of the above-described actual situation, and it is possible to reduce the number of foreign matter removing filters and prevent the inflow of foreign matter to the main stop valve and the gas filling and supply method. An object is to provide an apparatus.

  The present invention is applied to a case where a plurality of gas containers are simultaneously filled with gas from a gas supply unit and supplied from the filled gas container to a gas consumption unit.

  Specifically, in a gas supply path provided with a filter that supplies gas to the gas consumption unit, the gas filled in the gas container passes through the filter and then is sent to the main stop valve. Gas is supplied to the gas consuming unit through a gas control means for regulating the gas flow direction.

  On the other hand, in the gas filling path for filling the gas container with the gas from the gas supply unit, the gas and the main stop valve are bypassed to fill the gas container with the gas.

  According to the present invention, in a gas supply path provided with a filter for supplying gas to the gas consuming section, foreign substances filled in the gas container are removed from the gas contained in the container by passing through the filter, and the main stop Since gas is supplied to the gas consuming part through the gas control means that regulates the gas flow direction from the main stop valve to the gas, the intrusion of foreign matter into the main stop valve and the gas consuming part is prevented. Can be prevented.

  Moreover, in the gas filling path for filling the gas container with the gas from the gas supply section, the filter and the main stop valve provided in the gas supply path are bypassed to flow the filling gas, so that foreign matter can enter the main stop valve even during gas filling. Can be prevented.

  Therefore, according to the present invention, since it is not necessary to provide a filter in the gas filling path, it is possible to prevent foreign substances from flowing into the main stop valve and the gas consumption unit while reducing the number of filters.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

“First Embodiment”
FIG. 1 is a gas filling / supply route diagram in the gas filling / supplying device of the first embodiment. In the first embodiment, two gas containers are connected to each other, and the gas containers are filled with a gas containing foreign substances at the same time, and the gas from which the foreign substances are removed is supplied to the gas consuming unit. . Although the number of gas containers is two in the present invention, more gas containers can be connected. In the first embodiment, for example, the present invention is applied to a system that fills and supplies fuel gas (hydrogen gas) to a fuel cell of a fuel cell vehicle.

  At the mouths of the gas containers 1 and 2, a gas filling path for filling the gas filled from the gas supply unit 3 into the container, a gas supply path for supplying the filled gas to the gas consumption unit 4, Are attached to the valve assemblies 5 and 6. In the first embodiment, since the two gas containers 1 and 2 and the valve assemblies 5 and 6 have the same configuration, only one of them will be described as an example.

  In the case of a fuel cell vehicle using compressed hydrogen gas as fuel, the gas container 1 is a container that can withstand the gas pressure because the filling gas pressure becomes high.

  The fuel cell vehicle is provided with a gas filling port 19 for connection to the gas supply unit 3. The gas filling valve 20 is provided in the vicinity of the gas filling port 19 and shuts off the path between the gas filling port 19 and the gas container 1 except during gas filling.

  The valve assembly 5 includes a valve inlet 7 serving as an inlet for filling gas into the gas container 1, and a gas filling path 8 (8 a, 8 b, 8 c) for supplying the gas filled from the valve inlet 7 into the gas container 1. , A filter 9 for removing foreign matters mixed in the gas filled in the gas container 1, and a valve which is directly attached to the gas container 1 and cuts off the gas supply downstream from the valve by being electromagnetically operated. A gas supply path 12 (12a, 12b) provided with a stop valve 10, a first check valve 11 serving as a gas control means for controlling the gas flow direction in this order, and a valve outlet 13 serving as an outlet of the gas supply path 12 And a second check valve 14 provided in the vicinity of the container 1 in the gas filling path 8c.

  The gas filling path 8 includes a first gas filling path 8 a and a second gas filling path 8 b that connect the valve inlet 7 and the second connection portion 17, and gas filled from the valve inlet 7 is provided in the gas supply path 12. The filter 9 and the main stop valve 10 have a third gas filling path 8c serving as a bypass path for filling the inside of the container 1 with gas so as not to flow.

  The second gas filling path 8b includes a first connection part 16 of the first gas filling path 8a and the third gas filling path 8c, and a second connection part 17 of a first gas supply path 12a and a second gas supply path 12b described later. Are connected to each other.

  The first connection port 15 is a port for communicating the inside and outside of the gas container 1. A third gas filling path 8 c of the gas filling path 8 is connected to the first connection port 15.

  The second check valve 14 is provided in the vicinity of the first connection port 15 and in the third gas filling path 8c. The second check valve 14 allows gas to flow from the first connection portion 16 to the gas container 1, but prevents gas from flowing from the gas container 1 to the first connection portion 16.

  The gas supply path 12 includes a first gas supply path 12 a and a second gas supply path 12 b that connect the valve outlet 13 and a second connection port 18 formed in the gas container 1.

  The first gas supply path 12 a is provided so as to connect the second connection port 18 and the second connection part 17. The second gas supply path 12 b is provided so as to connect the second connection portion 17 and the valve outlet 13.

  In the first gas supply path 12 a, a filter 9 that removes foreign substances mixed in the gas filled in the gas container 1 from the second connection port 18 toward the second connection portion 17, the main stop valve 10, and the first The check valve 11 is arranged in this order.

  The filter 9 is a removal filter for capturing foreign matter contained in the filling gas or foreign matter that has been in the gas container 1 since the container was manufactured or has been generated after the manufacture. Such a filter 9 is provided at an inlet portion serving as a gas inlet of the main stop valve 10.

  The main stop valve 10 is composed of, for example, an electromagnetic valve, and opens to supply the filling gas in the gas container 1 to the valve outlet 13 or closes the valve to stop supplying the supply gas. The opening / closing operation of the main stop valve 10 needs to be performed reliably.

  The first check valve 11 is provided at the inlet portion of the main check valve 10 and allows gas to flow in the direction from the main stop valve 10 side to the second connection portion 17, but in the opposite direction, gas is supplied. It is not allowed to circulate. The first check valve 11 may be an electromagnetic valve, a manual valve, or the like.

  The gas supply unit 3 is, for example, a hydrogen station for supplying fuel cells. On the other hand, the gas consuming unit 4 is a fuel cell that generates electricity by supplying hydrogen and oxygen to the solid polymer electrolyte membrane, respectively.

  The two gas containers 1, 2, the gas supply unit 3, and the gas consumption unit 4 configured as described above are connected as follows. The gas supply unit 3 is connected to the gas filling port 19 by a gas filling hose 21. The gas consumption unit 4 is connected to the valve outlet 13 of the other gas container 2 by a gas supply pipe 23. The gas supply pipe 23 is provided with a pressure reducing valve 24 that supplies fuel (hydrogen) gas to the gas consuming unit 4 under a predetermined pressure. The valve outlet 13 of one gas container 1 and the valve inlet 7 of the other gas container 2 are connected by a connecting pipe, and an inter-container connection path 22 is configured by this connecting pipe.

  When the gas containers 1 and 2 are filled with gas (hydrogen), the gas filling valve 20 is opened, and the filling gas is supplied from the gas supply unit 3 through the gas filling port 19 to the one gas container 1. Supplied to the inlet 7. The filling gas supplied to the valve inlet 7 flows through the first gas filling path 8a. And the filling gas which flows through this 1st gas filling path | route 8a is isolate | separated into the 2nd gas filling path | route 8b and the 3rd gas filling path | route 8c by the 1st connection part 16, and flows into each path | route 8b, 8c. The filling gas flowing into the third gas filling path 8c passes through the second check valve 14 and the first connection port 15 in this order, and flows into the gas container 1.

  On the other hand, the filling gas that has flowed into the second gas filling path 8b is separated by the second connecting portion 17, and flows into the first gas supply path 12a and the second gas supply path 12b, respectively. The filling gas flowing into the first gas supply path 12a is shut off by the first check valve 11 installed as a gas control means. Therefore, the filling gas that has flowed into the first gas supply path 12a is blocked before the main stop valve 10 and does not reach the inside (the valve seat).

  On the other hand, the filling gas flowing into the second gas supply path 12b passes through the valve outlet 13 provided at the tip of this path, flows out of the valve assembly 5, and passes through the inter-container connection path 22 to another gas. It flows to the valve inlet 7 of the valve assembly 6 attached to the container 2. Since the path of the filling gas filled in the gas container 2 from the valve inlet 7 is the same as the previous path, the description thereof is omitted. As a result, the two gas containers 1 and 2 are filled with the filling gas at the same time.

  When gas (hydrogen) is supplied from the gas containers 1 and 2, power is supplied to the main stop valve 10, and the main stop valve 10 is opened. The supply gas passes through the second connection port 18 and flows to the first gas supply path 12a. By installing the second check valve 14 in the third gas filling path 8c, the foreign matter existing in the gas containers 1 and 2 and the foreign matter flowing in at the time of gas filling flow out of the gas containers 1 and 2 when the gas is supplied. Can be prevented.

  All of the supply gas flowing into the first gas supply path 12a passes through the filter 9 installed at the inlet of the main stop valve 10, so that foreign matter contained in the supply gas to the inside of the main stop valve 10 is filtered by this filter. 9 removed. The foreign matters include not only the foreign matters that have flowed into the supply gas, but also the first connection port 15, the second connection port 18, the inner wall surfaces of the gas containers 1 and 2, the gas filling route 8, and the gas supply route 12 during manufacturing and assembly. It is the burr etc. which adhered to the inner wall surface. All such foreign substances are removed immediately before the entrance of the main stop valve 10.

  Thus, the gas flowing through the filter 9 is only the supply gas. Further, the flow direction of the supply gas from which the foreign matter has been removed by the filter 9 is only in the direction from the inside of the gas containers 1 and 2 to the second connecting portion 17, so that after the foreign matter is captured by the filter 9, The occurrence of foreign matter re-diffusion into the gas due to the backflow is prevented.

  Then, the supply gas from which foreign matter has been removed by the filter 9 passes through the main check valve 10 and the first check valve 11 in this order, and flows to the second gas supply path 12b via the second connection portion 17. At this time, since the main stop valve 10 is not pressurized from the second connecting portion 17 side, the design (pressure resistance) conditions of the main stop valve can be relaxed, and a reduction in size, weight, and cost can be expected. Since the supply gas that has flowed into the second gas supply path 12b has the same flow as the filling gas at the time of hydrogen filling, the description thereof is omitted here. In the gas container 2 connected to the gas consumption unit 4, the supply gas passes through the second gas supply path 12 b and exits from the valve assembly 6 through the valve outlet 13, and then passes through the gas supply pipe 23 and the pressure reducing valve 24. It is supplied to the gas consumption unit 4.

  As described above, according to the first embodiment, only one filter 9 is used to enter the main stop valve 10 both when the gas containers 1 and 2 are filled with gas and when the gas is supplied to the gas consumption unit 4. Intrusion of foreign matter can be prevented. That is, in the present embodiment, the foreign matter contained in the filling gas flows directly into the gas containers 1 and 2, but when supplying the supply gas to the gas consuming unit 4, the foreign matter and gas in the gas containers 1 and 2. The number of filters is reduced by removing foreign substances present at the time of manufacturing the container.

  According to the present embodiment, since the filter 9 is provided at the inlet of the main stop valve 10, foreign matter can be removed by the filter 9 before reaching the main stop valve 10.

  Further, according to the present embodiment, in the gas supply path 12 from the gas container 2 to the gas consumption unit 4, the supply gas is allowed to flow only in the direction from the gas container 2 to the gas consumption unit 4, and in front of the main stop valve 10. By blocking the gas flow in the reverse direction with the arranged first check valve 11, it is possible to prevent foreign matter from entering the main check valve 10.

“Second Embodiment”
FIG. 2 is a gas filling / supply route diagram in the gas filling / supplying apparatus of the second embodiment. In the second embodiment, parts that are the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  In the second embodiment, the main stop valve 10 is installed in the gas containers 1 and 2 with respect to the first embodiment, and the filter 9 is installed in the main stop valve 10 and in front of the valve seat portion. It has a structure. Further, the first gas filling path 8a and the second gas filling path 8b are set as a common path (hereinafter simply referred to as a first gas filling path 8ab), and the common path is separated from the third gas filling path 8c.

  In the second embodiment, the first connection portion 28, which is a connection point between the common first gas filling path 8ab and the second gas supply path 12b, and the connection between the third gas filling path 8c and the first gas supply path 12a. The second connection part 25, which is a point, is connected by a shared path 26. In the common path 26, the gas flow during gas filling and gas supply is reversed. Furthermore, the gas filling port 19 is provided with a third check valve 27 that prevents gas from flowing from the gas filling port 19 to the outside of the fuel cell vehicle as a gas filling valve.

  In the second embodiment, as described above, the valve assemblies 5 and 6 can be reduced in size by installing the main stop valve 10 inside the gas containers 1 and 2. Further, by having the common path 26, the valve assemblies 5 and 6 can be downsized. Therefore, in the case of a fuel cell vehicle, the total length of the gas containers 1 and 2 can be increased with respect to the same space, the amount of hydrogen loaded can be increased, and the cruising distance as a vehicle can be extended.

  When the gas containers 1 and 2 are filled with gas in the second embodiment, the filling gas is provided in one gas container 1 from the gas supply unit 3 through the gas filling port 19 provided with the third check valve 27. Supplied to the valve inlet 7. After the filling gas from the gas supply part 3 flows into the first gas filling path 8ab from the valve inlet 7, it is separated into the second gas supply path 12b and the common path 26 by the first connecting part 28. Since the filling gas flowing into the second gas supply path 12b has the same flow as in the first embodiment, the description thereof is omitted here. The filling gas flowing into the common path 26 is further separated into the third gas filling path 8c and the first gas supply path 12a by the second connecting portion 25. The filling gas that has flowed into the third gas filling path 8c and the filling gas that has flowed into the first gas supply path 12a have the same flow as in the first embodiment, and thus the description thereof is omitted.

  When hydrogen is supplied from the gas containers 1 and 2, power is supplied to the main stop valve 10 to open the valve. The supply gas passes from the gas containers 1 and 2 through the second connection port 18 and the first check valve (gas control means) 11 in this order, and flows into the first gas supply path 12a.

  In the second embodiment, since the filter 9 is installed in the main stop valve 10 and immediately before the valve seat portion, it remains in the internal path (flow path) of the main stop valve 10 from the time of manufacture and assembly. It is possible to prevent foreign matter from entering the valve seat.

  The supply gas that has flowed to the first gas supply path 12 a flows to the common path 26. The supply gas that has flowed into the common path 26 further flows to the second gas supply path 12b at the first connection portion 28. Since the supply gas flowing into the second gas supply path 12b has the same flow as in the first embodiment, the description thereof is omitted.

  As described above, according to the second embodiment, since the filter 9 is provided inside the main stop valve 10 and in front of the valve seat portion, it is possible to prevent foreign matter from entering the valve seat portion. .

  In the first and second embodiments, the valve assemblies 5 and 6 attached to the mouths of the gas containers 1 and 2 can be a common housing.

"Other embodiments"
In the first and second embodiments, the gas filling and supplying method and the supplying device for supplying hydrogen gas to the fuel cell of the fuel cell vehicle have been described. However, the present invention is applied to a system for supplying gasoline to the engine (gas consuming unit 4). May be applied.

FIG. 1 is a gas filling / supply route diagram in the gas filling / supplying device of the first embodiment. FIG. 2 is a gas filling / supply route diagram in the gas filling / supplying apparatus of the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Gas container 3 Gas supply part 4 Gas consumption part 5,6 Valve assembly 7 Valve inlet 8 Gas filling path 8a 1st gas filling path 8b 2nd gas filling path 8c 3rd gas filling path (bypass path)
DESCRIPTION OF SYMBOLS 9 Filter 10 Main check valve 11 1st check valve 12 Gas supply path 12a 1st gas supply path 12b 2nd gas supply path 13 Valve outlet 14 2nd check valve 15 1st connection port 16,28 1st connection part 17 2nd connection part 18 2nd connection port 19 Gas filling port 20 Gas filling valve 21 Gas filling hose 22 Inter-container connection path 23 Gas supply piping 24 Pressure reducing valve 25 Second connection part 26 Shared path 27 Third check valve

Claims (5)

A gas filling and supplying method of simultaneously filling a plurality of gas containers with gas from a gas supply unit and supplying the gas from the filled gas containers to a gas consumption unit,
In a gas supply path provided with a filter for supplying gas to the gas consuming section, the gas filled in the gas container passes through the filter and is then sent to the main stop valve, and the gas flow from the main stop valve Supply to the gas consuming part through a gas control means for regulating the direction,
On the other hand, in the gas filling path for filling the gas container with the gas from the gas supply section, the gas and the main stop valve are bypassed to fill the gas container with the gas. A gas filling and supplying apparatus that simultaneously fills a plurality of gas containers with gas from a gas supply unit and supplies the gas from the filled gas containers to a gas consumption unit,
In a gas supply path provided with a filter for supplying gas to the gas consuming section, the gas filled in the gas container passes through the filter and is then sent to the main stop valve, and the gas flow from the main stop valve Supply to the gas consuming part through a gas control means for regulating the direction,
On the other hand, in the gas filling path for filling the gas container with the gas from the gas supply section, the gas container is filled with the gas by bypassing the filter and the main stop valve. A gas filling and supplying apparatus that simultaneously fills a plurality of gas containers with gas from a gas supply unit and supplies the gas from the filled gas containers to a gas consumption unit,
The gas container is mixed with a gas inlet filled with gas into the gas container, a gas filling path for supplying gas filled from the valve inlet into the gas container, and gas filled in the gas container. A filter for removing foreign substances, a main stop valve, a gas supply path provided with a gas control means for controlling the gas flow direction in this order, and a valve outlet serving as an outlet of the gas supply path,
The gas supply unit is connected to the valve inlet of one gas container, the gas consuming unit is connected to the valve outlet of another gas container, and the valve inlets and valve outlets of the other gas containers are connected to each other. Connected to connect the plurality of gas containers,
A gas filling / supplying device comprising: a bypass path that allows gas filled from the valve inlet to bypass the filter and the main stop valve provided in the gas supply path to fill the container with the gas. The gas filling and supplying device according to claim 3,
The gas filling and supplying apparatus, wherein the filter is provided at an inlet of the main stop valve. The gas filling and supplying device according to claim 3,
The gas filling and supplying apparatus, wherein the filter is provided at a position in front of the valve seat in the main stop valve.

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