CN103256413B - Water pressure safety relief valve for high pressure water mist fire extinguishing system - Google Patents
Water pressure safety relief valve for high pressure water mist fire extinguishing system Download PDFInfo
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- CN103256413B CN103256413B CN201310072903.6A CN201310072903A CN103256413B CN 103256413 B CN103256413 B CN 103256413B CN 201310072903 A CN201310072903 A CN 201310072903A CN 103256413 B CN103256413 B CN 103256413B
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- spring seat
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Abstract
The invention provides a water pressure safety relief valve for a high pressure water mist fire extinguishing system. The water pressure safety relief valve comprises a valve body (1), an upper end cover (2), a screw rod (3), a spring seat (4), a spring (5), a valve rod (6), a valve seat (7) and a lower end cover (8). The upper end cover (2) is mounted at one end of the valve body (1). A screw hole is reserved on the upper end cover (2). The screw rod (3) is mounted in the screw hole on the upper end cover (2) and is locked through a nut (9). The spring seat (4) is mounted in the valve body (1). A pressure compensation chamber (4-1) is arranged on the spring seat (4). The valve rod (6) is mounted in the valve body (1). The upper end of the valve rod (6) is located in the pressure compensation chamber (4-1) of the spring seat (4). The water pressure safety relief valve has the advantages that the water pressure safety relief valve can be guaranteed to be used normally under the conditions of large water flow and high pressure, and security is guaranteed.
Description
Technical field
The present invention relates to fire-protection equipment field, be specifically related to a kind of water pressure safety Decompression valves for high-pressure fine water mist fire-extinguishing system.
Background technique
At present, in prior art, fire extinguisher does not arrange pressure relief safety valve; fire extinguisher can only when canned by virtue of experience pilot pressure; operation easier is large, so, usually there will be fire extinguisher underpressure and affect normal to use or pressure is excessive and situation that is that produce blast occurs.
Summary of the invention
Object of the present invention is exactly in currently available technology; fire extinguisher does not arrange pressure relief safety valve; fire extinguisher can only when canned by virtue of experience pilot pressure; operation easier is large; so; usually there will be fire extinguisher underpressure and affect normal use or pressure excessive and produce the deficiency of the situation generation of blast, and provide a kind of water pressure safety Decompression valves for high-pressure fine water mist fire-extinguishing system.
The present invention is by valve body, upper end cap, screw rod, spring seat, spring, valve rod, valve seat and lower end cap composition, valve body has water outlet, upper end cap is arranged on valve body one end, upper end cap has tapped hole, screw rod is arranged in the tapped hole of upper end cap, and pass through nut check, spring seat is arranged in valve body, spring seat is provided with pressure compensation chamber, valve rod is arranged in valve body, and valve rod upper end is positioned at the pressure compensation chamber of spring seat, valve rod has A throughbore, stem bottom is provided with annular protrusion, A throughbore one end communicates with the pressure compensation chamber of spring seat, valve seat is arranged in valve body, and be positioned at stem bottom, spring housing is contained on valve rod, and two ends are connected with the annular protrusion on valve rod with spring seat respectively, valve seat has B throughbore, B throughbore communicates with the A throughbore the other end, the aperture of A throughbore is less than the aperture of B throughbore, lower end cap is arranged on one end of valve body, lower end cap has water inlet, water inlet communicates with the B throughbore of valve seat.
Pressure compensation chamber is that cylindrical pressure compensates chamber.
Advantage of the present invention is: the present invention can ensure normal use in water flow when large and high pressure, and guarantees Security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention is by valve body 1, upper end cap 2, screw rod 3, spring seat 4, spring 5, valve rod 6, valve seat 7 and lower end cap 8 form, valve body 1 has water outlet 1-1, upper end cap 2 is arranged on valve body 1 one end, upper end cap 2 has tapped hole, screw rod 3 is arranged in the tapped hole of upper end cap 2, and locked by nut 9, spring seat 4 is arranged in valve body 1, spring seat 4 is provided with pressure compensation chamber 4-1, valve rod 6 is arranged in valve body 1, and valve rod 6 upper end is positioned at the pressure compensation chamber 4-1 of spring seat 4, valve rod 6 has A throughbore 6-1, annular protrusion 6-2 is provided with bottom valve rod 6, A throughbore 6-1 one end communicates with the pressure compensation chamber 4-1 of spring seat 4, valve seat 7 is arranged in valve body 1, and be positioned at bottom valve rod 6, spring 5 is sleeved on valve rod 6, and two ends are connected with the annular protrusion 6-2 on valve rod 6 with spring seat 4 respectively, valve seat 7 has B throughbore 7-1, B throughbore 7-1 communicates with the A throughbore 6-1 the other end, the aperture of A throughbore 6-1 is less than the aperture of B throughbore 7-1, lower end cap 8 is arranged on one end of valve body 1, lower end cap 8 has water inlet 8-1, water inlet 8-1 communicates with the B throughbore 7-1 of valve seat 7.
Pressure compensation chamber 4-1 is that cylindrical pressure compensates chamber 4-1.
Working principle: when the water inlet 8-1 to lower end cap 8 passes into water, now some water can enter in pressure compensation chamber 4-1 by B throughbore 7-1 and A throughbore 6-1;
Set respectively the aperture of B throughbore 7-1 as the aperture of D, A throughbore 6-1 be a, the cylindrical pressure internal diameter that compensates chamber 4-1 is that d is shown in Fig. 1;
Water in B throughbore 7-1 is as follows to applied pressure formula bottom valve rod 6:
F1=PA=P[D/22π-a/22π]
The calculation of pressure formula of water to valve rod 6 top that cylindrical pressure compensates in chamber 4-1 is as follows:
F2=PA=P[d/22π-a/22π]
When the elastic force of F1-F2=P [D/22 π-d/22 π] >=spring 5, valve rod will be pushed, and namely moves up, and water will to flow in valve body 1 and to flow out from the water outlet 1-1 of valve body 1.
Claims (2)
1. the water pressure safety Decompression valves for high-pressure fine water mist fire-extinguishing system, it is characterized in that it is by valve body (1), upper end cap (2), screw rod (3), spring seat (4), spring (5), valve rod (6), valve seat (7) and lower end cap (8) composition, valve body (1) has water outlet (1-1), upper end cap (2) is arranged on valve body (1) one end, (2) have tapped hole to upper end cap, screw rod (3) is arranged in the tapped hole of upper end cap (2), and by nut (9) locking, spring seat (4) is arranged in valve body (1), spring seat (4) is provided with pressure compensation chamber (4-1), valve rod (6) is arranged in valve body (1), and valve rod (6) upper end is positioned at the pressure compensation chamber (4-1) of spring seat (4), valve rod (6) has A throughbore (6-1), valve rod (6) bottom is provided with annular protrusion (6-2), A throughbore (6-1) one end communicates with the pressure compensation chamber (4-1) of spring seat (4), valve seat (7) is arranged in valve body (1), and be positioned at valve rod (6) bottom, spring (5) is sleeved on valve rod (6), and two ends are connected with the annular protrusion (6-2) on valve rod (6) with spring seat (4) respectively, valve seat (7) has B throughbore (7-1), B throughbore (7-1) communicates with A throughbore (6-1) the other end, the aperture of A throughbore (6-1) is less than the aperture of B throughbore (7-1), lower end cap (8) is arranged on one end of valve body (1), lower end cap (8) has water inlet (8-1), water inlet (8-1) communicates with the B throughbore (7-1) of valve seat (7).
2. a kind of safety relief valve according to claim 1, is characterized in that pressure compensation chamber (4-1) is for cylindrical pressure compensation chamber (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072903.6A CN103256413B (en) | 2013-03-07 | 2013-03-07 | Water pressure safety relief valve for high pressure water mist fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072903.6A CN103256413B (en) | 2013-03-07 | 2013-03-07 | Water pressure safety relief valve for high pressure water mist fire extinguishing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103256413A CN103256413A (en) | 2013-08-21 |
| CN103256413B true CN103256413B (en) | 2015-07-08 |
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ID=48960529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310072903.6A Active CN103256413B (en) | 2013-03-07 | 2013-03-07 | Water pressure safety relief valve for high pressure water mist fire extinguishing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103256413B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508674B (en) * | 2016-02-24 | 2017-11-03 | 湖北仁创科技有限公司 | A kind of slip damp type hydraulic overflow valve for high-pressure high-flow system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2366830A (en) * | 2000-07-17 | 2002-03-20 | South Staffordshire Water Plc | Pressure relief valve in mains water supply system |
| CN202039871U (en) * | 2011-03-31 | 2011-11-16 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN202371238U (en) * | 2011-12-14 | 2012-08-08 | 四川省机械研究设计院 | Self-buffering multi-stage safety valve |
| CN203146934U (en) * | 2013-03-07 | 2013-08-21 | 荆门市广恒机电设备有限公司 | Water pressure safety relief valve for high-pressure fine water fog extinguishing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBO20060206A1 (en) * | 2006-03-23 | 2007-09-24 | Piersburg S P A | PRESSURE HEATER FOR A HYDRAULIC CIRCUIT. |
-
2013
- 2013-03-07 CN CN201310072903.6A patent/CN103256413B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2366830A (en) * | 2000-07-17 | 2002-03-20 | South Staffordshire Water Plc | Pressure relief valve in mains water supply system |
| CN202039871U (en) * | 2011-03-31 | 2011-11-16 | 乐清市东风煤矿设备有限公司 | Safety valve |
| CN202371238U (en) * | 2011-12-14 | 2012-08-08 | 四川省机械研究设计院 | Self-buffering multi-stage safety valve |
| CN203146934U (en) * | 2013-03-07 | 2013-08-21 | 荆门市广恒机电设备有限公司 | Water pressure safety relief valve for high-pressure fine water fog extinguishing system |
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| Publication number | Publication date |
|---|---|
| CN103256413A (en) | 2013-08-21 |
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