Wet pipe fire protection sprinkler system dual air vent with water retention and return
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A62C-035/68
A62C-035/60
출원번호
US-0254487
(2016-09-01)
등록번호
US-9999792
(2018-06-19)
발명자
/ 주소
Bodemann, Scott Christian
Bodemann, Timothy S.
출원인 / 주소
South-Tek Systems, LLC
대리인 / 주소
Coats & Bennett, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A dual air vent allows air or gas to be vented from a wet pipe fire protection sprinkler system, but inhibits water from spilling out. A conventional first air vent valve is operative to vent air or gas as a pipe is filled with water, but not vent the water. However, it may discharge a small amount
A dual air vent allows air or gas to be vented from a wet pipe fire protection sprinkler system, but inhibits water from spilling out. A conventional first air vent valve is operative to vent air or gas as a pipe is filled with water, but not vent the water. However, it may discharge a small amount of water when the pipe fills and substantially all air or gas has been vented. The output of the first air vent valve is not released into the protected premises, but rather is routed to a reservoir having a second air vent. Air or gas is vented through the second air vent, but any water discharged by the first air vent valve is retained in the reservoir. The reservoir is connected to the pipe by a one-way valve which allows air flow in either direction, and allows water flow from the reservoir to the pipe, but blocks water flow from the pipe to the reservoir. When the pipe is again drained, water retained in the reservoir is allowed to flow into the pipe, where it is also drained.
대표청구항▼
1. A dual air vent operative to vent air or gas, but not water, from a wet pipe fire protection sprinkler system, comprising: a first air vent valve connected to a pipe of the sprinkler system, the first air vent valve including a water blocking mechanism operative to vent air or gas but substantial
1. A dual air vent operative to vent air or gas, but not water, from a wet pipe fire protection sprinkler system, comprising: a first air vent valve connected to a pipe of the sprinkler system, the first air vent valve including a water blocking mechanism operative to vent air or gas but substantially no water from the pipe; anda reservoir including a second air vent connected to the pipe of the sprinkler system by a one-way valve operative to allow water to flow from the reservoir into the pipe but block water flow from the pipe to the reservoir;wherein the reservoir is connected to an output of the first air vent valve in fluid flow relationship, such that air or gas, and any water discharged by the first air vent valve, enter the reservoir; andwherein air or gas entering the reservoir from the first air vent valve is discharged from the reservoir via the second air vent, and water entering the reservoir from the first air vent valve is retained in the reservoir; andwherein when the pipe is drained, water retained in the reservoir flows via the one-way valve into the pipe. 2. The dual air vent of claim 1 wherein the first air vent is connected to the pipe at the top of the pipe. 3. The dual air vent of claim 1 wherein the second air vent is connected to the pipe at the side of the pipe. 4. The dual air vent of claim 1 wherein the reservoir is disposed below the first air vent such that water flows from the first air vent to the reservoir by gravity. 5. The dual air vent of claim 1 wherein the second air vent is operative to allow air or gas but not water to exit the reservoir. 6. The dual air vent of claim 1 wherein a manual valve is interposed between the pipe and the first air vent. 7. The dual air vent of claim 1 wherein a filter trap is interposed between the pipe and the first air vent. 8. The dual air vent of claim 1 wherein a manual valve is interposed between the pipe and the second air vent. 9. The dual air vent of claim 1 wherein a filter trap is interposed between the pipe and the second air vent. 10. The dual air vent of claim 1 wherein the air or gas discharged by the first air vent is nitrogen gas. 11. The dual air vent of claim 1 wherein the water filling the pipe is deoxygenated water having an O2 concentration of 500 ppb or less. 12. A method of operating a wet pipe fire protection system including at least one dual air vent comprising a first air vent valve connected to a pipe of the sprinkler system, the first air vent valve including a water blocking mechanism operative to vent air or gas but substantially no water from the pipe, and a reservoir including a second air vent connected to the pipe of the sprinkler system by a one-way valve operative to allow water to flow from the reservoir into the pipe but block water flow from the pipe to the reservoir, the reservoir connected to an output of the first air vent valve in fluid flow relationship, the method comprising: filling a pipe of the wet pipe fire protection system with water;venting air or gas, displaced by the water, from the pipe via the first air vent valve, reservoir, and second air vent;preventing water from flowing directly from the pipe into the reservoir;retaining water discharged by the first air vent valve in the reservoir;draining water from the pipe of the wet pipe fire protection system; andallowing water retained in the reservoir to flow into the pipe to be drained. 13. The method of claim 12 further comprising: prior to filling the pipe with water, injecting nitrogen gas into the pipe and venting air displaced by the nitrogen gas via the first air vent valve, reservoir, and second air vent. 14. The method of claim 12 further comprising: prior to filling the pipe with water, deoxygenating the water to an O2 concentration of 500 ppb or less. 15. The method of claim 14 wherein deoxygenating the water comprises interposing a Gas Transfer Membrane (GTM) deoxygenating device between a building water supply and the wet fire protection system pipes and supplying nitrogen gas to the GTM device.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Burkhart, David J.; Schultz, Edward A., Automatic air vent for fire suppression wet pipe system and method of venting a fire suppression wet pipe system.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.