CN103256413A - 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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- CN103256413A CN103256413A CN2013100729036A CN201310072903A CN103256413A CN 103256413 A CN103256413 A CN 103256413A CN 2013100729036 A CN2013100729036 A CN 2013100729036A CN 201310072903 A CN201310072903 A CN 201310072903A CN 103256413 A CN103256413 A CN 103256413A
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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 the 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 the prior art, fire extinguisher does not arrange pressure relief safety valve; fire extinguisher can only be when canned pilot pressure by virtue of experience; operation easier is big, so, usually the fire extinguisher underpressure can appear and to influence normal use or pressure excessive and situation that produce blast takes place.
Summary of the invention
Purpose of the present invention is exactly in the present prior art; fire extinguisher does not arrange pressure relief safety valve; fire extinguisher can only be when canned pilot pressure by virtue of experience; operation easier is big; so; usually the fire extinguisher underpressure can occur and to influence normal use or pressure excessive and produce the deficiency of the situation generation of blast, and a kind of water pressure safety Decompression valves for high-pressure fine water mist fire-extinguishing system is provided.
The present invention is by valve body, upper end cap, screw rod, spring seat, spring, valve rod, valve seat and lower end cap are formed, have water outlet on the valve body, upper end cap is installed in valve body one end, have tapped hole on the upper end cap, screw rod is installed in the tapped hole of upper end cap, and by nut check, spring seat is installed in the valve body, and spring seat is provided with the pressure compensation chamber, and valve rod is installed in the valve body, and the valve rod upper end is positioned at the pressure compensation chamber of spring seat, have flow channel on the valve rod, stem bottom is provided with annular protrusion, and A current through hole one end communicates with the pressure compensation chamber of spring seat, valve seat is installed in the valve body, and being positioned at stem bottom, spring housing is contained on the valve rod, and two ends link to each other with annular protrusion on the valve rod with spring seat respectively, have B current through hole on the valve seat, B current through hole communicates with the A current through hole the other end, and the aperture of A current through hole is less than the aperture of B current through hole, and lower end cap is installed in an end of valve body, have the water inlet on the lower end cap, the water inlet communicates with the B current through hole of valve seat.
The pressure compensation chamber is cylindrical pressure compensation chamber.
Advantage of the present invention is: the present invention can be big in water flow and the situation of high pressure under guarantee normal use, and guarantee Security.
Description of drawings
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 are formed, have water outlet 1-1 on the valve body 1, upper end cap 2 is installed in valve body 1 one ends, have tapped hole on the upper end cap 2, screw rod 3 is installed in the tapped hole of upper end cap 2, and by nut 9 lockings, spring seat 4 is installed in the valve body 1, spring seat 4 is provided with pressure compensation chamber 4-1, valve rod 6 is installed in the valve body 1, and valve rod 6 upper ends are positioned at the pressure compensation chamber 4-1 of spring seat 4, have flow channel 6-1 on the valve rod 6, valve rod 6 bottoms are provided with annular protrusion 6-2, A current through hole 6-1 one end communicates with the pressure compensation chamber 4-1 of spring seat 4, valve seat 7 is installed in the valve body 1, and be positioned at valve rod 6 bottoms, spring 5 is sleeved on the valve rod 6, and two ends link to each other with annular protrusion 6-2 on the valve rod 6 with spring seat 4 respectively, have B current through hole 7-1 on the valve seat 7, and B current through hole 7-1 communicates with the A current through hole 6-1 the other end, the aperture of A current through hole 6-1 is less than the aperture of B current through hole 7-1, lower end cap 8 is installed in an end of valve body 1, has water inlet 8-1 on the lower end cap 8, and water inlet 8-1 communicates with the B current through hole 7-1 of valve seat 7.
Pressure compensation chamber 4-1 is cylindrical pressure compensation chamber 4-1.
Working principle: when feeding water to the water inlet 8-1 of lower end cap 8, this moment, some water can enter in the pressure compensation chamber 4-1 by B current through hole 7-1 and A current through hole 6-1;
The aperture of establishing B current through hole 7-1 respectively is that the aperture of D, A current through hole 6-1 is that the internal diameter of a, cylindrical pressure compensation chamber 4-1 is that d sees Fig. 1;
Water in the B current through hole 7-1 is as follows to valve rod 6 bottom applied pressure formula:
F1=PA=P[D/22π-a/22π]
Water in the cylindrical pressure compensation chamber 4-1 is as follows to the calculation of pressure formula at valve rod 6 tops:
F2=PA=P[d/22π-a/22π]
As F1-F2=P[D/22 π-d/22 π] 〉=during the elastic force of spring 5, valve rod will be pushed, and namely moves up, and water will flow in the valve body 1 and from the water outlet 1-1 outflow of valve body 1.
Claims (2)
1. water pressure safety Decompression valves that is used 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) are formed, have water outlet (1-1) on the valve body (1), upper end cap (2) is installed in valve body (1) one end, upper end cap has tapped hole on (2), screw rod (3) is installed in the tapped hole of upper end cap (2), and by nut (9) locking, spring seat (4) is installed in the valve body (1), spring seat (4) is provided with pressure compensation chamber (4-1), valve rod (6) is installed in the valve body (1), and valve rod (6) upper end is positioned at the pressure compensation chamber (4-1) of spring seat (4), have flow channel (6-1) on the valve rod (6), valve rod (6) bottom is provided with annular protrusion (6-2), A current through hole (6-1) end communicates with the pressure compensation chamber (4-1) of spring seat (4), valve seat (7) is installed in the valve body (1), and be positioned at bottom the valve rod (6), spring (5) is sleeved on the valve rod (6), and two ends link to each other with annular protrusion (6-2) on the valve rod (6) with spring seat (4) respectively, have B current through hole (7-1) on the valve seat (7), B current through hole (7-1) communicates with A current through hole (6-1) the other end, the aperture of A current through hole (6-1) is less than the aperture of B current through hole (7-1), lower end cap (8) is installed in an end of valve body (1), have water inlet (8-1) on the lower end cap (8), water inlet (8-1) communicates with the B current through hole (7-1) of valve seat (7).
2. want 1 described a kind of safety relief valve according to right, it is characterized in that pressure compensation chamber (4-1) is 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 true CN103256413A (en) | 2013-08-21 |
| CN103256413B CN103256413B (en) | 2015-07-08 |
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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 |
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| Country | Link |
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| CN (1) | CN103256413B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508674A (en) * | 2016-02-24 | 2016-04-20 | 湖北仁创科技有限公司 | Slide damping type water hydraulic overflow valve for high-pressure and high-flow systems |
Citations (5)
| 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 |
| WO2007122463A2 (en) * | 2006-03-23 | 2007-11-01 | Pierburg Pump Technology Italy S.P.A. | A pressure dissipater device for a hydraulic circuit |
| 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 |
-
2013
- 2013-03-07 CN CN201310072903.6A patent/CN103256413B/en active Active
Patent Citations (5)
| 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 |
| WO2007122463A2 (en) * | 2006-03-23 | 2007-11-01 | Pierburg Pump Technology Italy S.P.A. | A pressure dissipater device for a hydraulic circuit |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508674A (en) * | 2016-02-24 | 2016-04-20 | 湖北仁创科技有限公司 | Slide damping type water hydraulic overflow valve for high-pressure and high-flow systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103256413B (en) | 2015-07-08 |
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