Provided is a fluid control valve assembly including: a main valve body having a first flow passage that is mounted on an inlet of a high-pressure vessel and through which a charging source gas passes, a second flow passage through which a feeding source gas passes, and a third flow passage to which
Provided is a fluid control valve assembly including: a main valve body having a first flow passage that is mounted on an inlet of a high-pressure vessel and through which a charging source gas passes, a second flow passage through which a feeding source gas passes, and a third flow passage to which the first flow passage and the second flow passage are connected; a manual valve that is mounted on the main valve body and that opens and closes the third flow passage; a solenoid valve that is mounted on the main valve body and that opens and closes the second flow passage by an electrical signal; a first check valve that is provided on the first flow passage to thus block a reverse flow of the charging source gas; and a second check valve that is provided on the second flow passage to thus block a reverse flow of the feeding source gas, and block the charging source gas from flowing in the second flow passage, to thereby prevent the charging source gas from flowing in the solenoid valve. Accordingly, a charging gas pressure of a high-pressure is prevented from being applied to a solenoid valve, to thereby prevent damage to the solenoid valve and to prevent a malfunction of the solenoid valve.
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1. A fluid control valve assembly comprising: a main valve body having a first flow passage that is mounted on an inlet of a high-pressure vessel and through which a charging source gas passes, a second flow passage through which a feeding source gas passes, and a third flow passage to which the fir
1. A fluid control valve assembly comprising: a main valve body having a first flow passage that is mounted on an inlet of a high-pressure vessel and through which a charging source gas passes, a second flow passage through which a feeding source gas passes, and a third flow passage to which the first flow passage and the second flow passage are connected;a manual valve that is mounted on the main valve body and that opens and closes the third flow passage;a solenoid valve that is mounted on the main valve body and that opens and closes the second flow passage by an electrical signal;a first check valve that is provided on the first flow passage to thus block a reverse flow of the charging source gas; anda second check valve that is provided on the second flow passage to thus block a reverse flow of the feeding source gas, and block the charging source gas from flowing in the second flow passage, to thereby prevent the charging source gas from flowing in the solenoid valve. 2. The fluid control valve assembly according to claim 1, wherein the first flow passage and the second flow passage are branched from one end of the third flow passage, and a fourth flow passage in which the charging source gas flows and a fifth flow passage through which the feeding source gas is discharged are connected to another end of the third flow passage. 3. The fluid control valve assembly according to claim 2, wherein a filter that filters fine dusts is provided at a portion where the fourth flow passage and the fifth flow passage meet, and a sintering filter is used as the filter. 4. The fluid control valve assembly according to claim 1, wherein a thermistor for measuring the temperature of the source gas stored in the high-pressure vessel is provided at one side of the main valve body. 5. The fluid control valve assembly according to claim 1, wherein the manual valve comprises a valve body that is coupled to the main valve body, and a valve member that is screwed into the inner surface of the valve body and that opens and closes the third flow passage by rotating the valve body, and a close contact portion that is in close contact with a seat portion formed in the third flow passage is integrally formed at the end of the valve member. 6. The fluid control valve assembly according to claim 1, wherein the solenoid valve comprises: a valve body that is mounted on the main valve body;a valve seat that is mounted on the lower portion of the valve body;a coil that is mounted on an outer circumferential surface of the valve body and that is powered;a core that is mounted on an inner surface of the valve body;a lower plunger that is disposed movably on the inner surface of the valve body in which an orifice is formed, and on the bottom of which a close contact portion that is in close contact with a valve seat is integrally formed;an upper plunger that is disposed linearly movably at an upper side of the lower plunger, activates in conjunction with the lower plunger, and with which a close contact portion that is in close contact with the orifice is integrally formed; anda spring that is disposed between the upper plunger and the core and that presses the upper plunger to keep the valve closed. 7. The fluid control valve assembly according to claim 6, wherein a screw coupling portion is formed on the outer circumferential surface of the valve body, so as to be screwed on the main valve body, a first space portion on which the upper plunger is disposed and a second space portion whose inner diameter is formed larger than that of the first space portion and on which the lower plunger is disposed are formed in the inside of the valve body, and an inlet through which the source gas is introduced is formed on the lower circumferential surface of the valve body. 8. The fluid control valve assembly according to claim 6, wherein the lower plunger comprises: a body portion that is arranged to be movable on the inner surface of the valve body;a recess portion that is formed on the upper surface of the body portion and through which the source gas is introduced;a close contact portion that is integrally formed on the lower surface of the body portion and that is in close contact with the valve seat; andan orifice that is formed on the bottom of the recess portion so as to pass through a central portion of the close contact portion and through which the source gas is introduced. 9. The fluid control valve assembly according to claim 8, wherein an end portion of the close contact portion is formed in a curved shape so as to be inserted into an outlet formed in the valve seat. 10. The fluid control valve assembly according to claim 8, wherein a seat portion with which the upper plunger is in close contact protrudes on the bottom of the recess portion. 11. The fluid control valve assembly according to claim 8, wherein the upper plunger comprises: a body portion that is in close contact with the inner surface of the valve body to be linearly moved;a connecting portion that is formed to include a locking protrusion that is formed on the bottom of the body portion, inserted into the recess portion of the lower plunger to then be linearly movable, and locked with a locking bar formed in the recess portion; anda close contact portion that is integrally formed on the lower surface of the connecting portion, and that seals the orifice. 12. The fluid control valve assembly according to claim 11, wherein the connecting portion is formed in a polygonal shape in cross-section and comprises first planar portions each having a large area and second planar portions that are formed between the first planar portions and each of which has a small area, and the locking protrusion protrudes from the bottom of each of the second planar portions. 13. The fluid control valve assembly according to claim 1, wherein the second check valve comprises: a seat member that is fixed to a mount recess formed in the second flow passage of the main valve body; anda valve member that is inserted in an inner surface of the mount recess so as to be linearly movable, and that is in close contact with the seat member to thus open and close the second flow passage, in which the valve member is in close contact with the seat member by pressure of the charging source gas. 14. The fluid control valve assembly according to claim 13, wherein a screw coupling portion is formed on an outer circumferential surface of the seat member, so as to be screwed in the inner surface of the mount recess, a first passage that is in communication with one side of the second flow passage is formed at a side surface of the seat member, and a second passage that is in communication with the first passage is formed at a lower surface of the seat member. 15. The fluid control valve assembly according to claim 13, wherein the valve member is inserted in the inner surface of the mount recess so as to be linearly movable, in which a close contact portion formed of a slope so as to be in close contact with a lower surface of the seat member is formed at one side of the valve member, a third passage through which the source gas passes is formed at a side surface of the valve member, and a fourth passage communicating with the third passage is formed at a lower surface of the valve member. 16. The fluid control valve assembly according to claim 1, further comprising an excess flow valve that is mounted in the main valve body and communicates with the second flow passage to thus block the second flow passage if an overflow occurs. 17. The fluid control valve assembly according to claim 16, wherein the excess flow valve comprises: a filter housing that is mounted on the main valve body in which a passage that is in communication with the second flow passage is formed at the center of the filter housing and a filter is mounted in the inner surface of the passage;a valve body that is mounted at one end of the filter housing in which another passage communicating with the passage is formed;a valve member that is arranged in an inner surface of the valve body to be linearly movable, and that is in close contact with one surface of the valve body to thus block the passage if an overflow occurs;a spring that is disposed between the valve member and the valve body and provides a pressing force to maintain an open position the valve member; anda valve nut that is mounted on one surface of the valve body to thus prevent the valve member from being separated from the valve body. 18. The fluid control valve assembly according to claim 17, wherein a sintering filter that is formed of a cylindrical shape is used as the filter. 19. The fluid control valve assembly according to claim 17, wherein the valve member is formed to have a passage that is formed in a square shape in cross section and through which a source gas is introduced, in which a close contact portion that is in close contact with the valve body to block the passage is formed at one surface of the valve member and an orifice through which the source gas passes is formed when the valve member is in close contact with the valve body. 20. The fluid control valve assembly according to claim 1, further comprising a pressure relief device that is mounted on the main valve body and connected to a sixth flow passage communicating with the high-pressure vessel, to thus release pressure in the high-pressure vessel to the outside if temperature of the high-pressure vessel reaches a preset temperature or above.
Olander, W. Karl; McManus, James V.; Hultquist, Steven J.; Arno, Jose I.; Van Buskirk, Peter C., Fluid storage and dispensing systems, and fluid supply processes comprising same.
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