CN2555876Y - Pressure-relief and pressure-regulating fire hydrant - Google Patents
Pressure-relief and pressure-regulating fire hydrant Download PDFInfo
- Publication number
- CN2555876Y CN2555876Y CN 02240789 CN02240789U CN2555876Y CN 2555876 Y CN2555876 Y CN 2555876Y CN 02240789 CN02240789 CN 02240789 CN 02240789 U CN02240789 U CN 02240789U CN 2555876 Y CN2555876 Y CN 2555876Y
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- CN
- China
- Prior art keywords
- orifice plate
- fire hydrant
- slip orifice
- pressure
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a pressure reducing and stabilizing fire hydrant which is characterized in that a pressure reducing and stabilizing device consisting of a slide orifice plate, a spring and an interface is arranged in a common fire hydrant water outlet provided with a valve, a valve flap, a valve cap, a screw stem, a hand wheel, etc. The water flow enters into the fire hydrant through a water inlet, passes the central hole of the slide orifice plate and water outlet holes around, and finally flows out from the through hole of an interface circular seat. At this time, the small end face of the slide orifice plate and the circular seat form a changeable gap which can be adjusted automatically according to the water pressure at the water inlet, form appropriate water resistance and play a role of stabilizing the water pressure at the water outlet.
Description
Affiliated technical field
The utility model relates to the fire hydrant with decompression voltage stabilizing function that a kind of fire-fighting system is used, and it has and make delivery port pressure stability function within the specific limits under the situation that water inlet pressure changes.
Background technology
Present development along with skyscraper, various decompression voltage regulation type fire hydrants have appearred, although have under the situation that water inlet pressure changes on these decompression voltage regulation type fire hydrant functions, can play the function of decompression and voltage stabilizing, but because its structure is all complicated, manufacturing cost is higher, thereby price is very expensive, has increased building cost.
Summary of the invention
The purpose of this utility model is to provide a kind of structure more simple, cheap, has the decompression voltage stabilizing fire hydrant of decompression voltage stabilizing function simultaneously again.This fire hydrant is convenient to large quantities of processing, production owing to simple in structure, and product price is low, can significantly reduce construction costs.
The technical scheme that its technical problem that solves the utility model adopts is: in the common nozzle outlet with valve body, flap, valve gap, screw rod, handwheel etc., constituted the decompression stable-pressure device jointly by slip orifice plate, spring and the annular seating that is embedded in the interface center.The slip orifice plate is made of a big end and a small end, holds external diameter to be slightly less than the nozzle outlet internal diameter greatly, thin and uniform several apopores of its periphery, and there is a through hole at the small end center, and the slip orifice plate is installed in nozzle outlet inside by small end mode outwardly; A spring is being housed near the outside of slip orifice plate, and an end of spring is against on the thin large end face of slip orifice plate periphery; An interface, the annular seating that it is through hole that the center of interface studs with a center, the left end pressing spring of annular seating are installed in outer end at nozzle outlet.The principle of voltage stabilizing function of can realizing reducing pressure is: current are entered in the key by water inlet, through slip orifice plate centre bore and peripheral effluent hole, flow out from the through hole of interface annular seating, this moment is because the effect of water feeding pressure and spring, constitute the gap that can change between the small end face of slip orifice plate and the annular seating, when water inlet hydraulic pressure raises, the thrust that effect of water pressure produces in slip orifice plate left side is greater than spring tension force, the slip orifice plate is moved to the direction near annular seating, the gap that constitutes between slip orifice plate small end face and the annular seating reduces, resistance strengthened when current passed through, and made delivery port hydraulic pressure drop to required force value; When water inlet hydraulic pressure is low, the thrust that effect of water pressure produces in slip orifice plate left side is less than spring tension force, the slip orifice plate is moved to the direction away from annular seating, the gap that constitutes between slip orifice plate small end face and the annular seating increases, current by the time resistance reduce, make water outlet hydraulic pressure be raised to required force value.Therefore should can regulate the current gap between slip orifice plate small end face and the annular seating automatically according to water inlet hydraulic pressure size by decompression voltage stabilizing fire hydrant, form suitable water resistance, play the effect of stablizing delivery port hydraulic pressure.
Second kind of technical scheme that its technical problem of solving the utility model adopts is: damped ring of increase between the edge of the preceding and big end of slip orifice plate addressed and delivery port inwall, its effect is when the slip orifice plate moves, and does not produce vibrations.
The beneficial effects of the utility model are, it not only has the function that can regulate automatically, stablize delivery port hydraulic pressure, constitutes the simple in structure of this decompression stable-pressure device simultaneously, and cost is lower.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
In the accompanying drawing 1 first kind of example structure figure of the present utility model.
In the accompanying drawing 2 second kind of example structure figure of the present utility model.
Among the figure: 1. valve body; 2. flap; 3. valve gap; 4. screw rod; 5. handwheel; 6. slip orifice plate; 7. spring; 8. interface; 9. annular seating: 10. damped ring.
See also the utility model decompression voltage stabilizing fire hydrant accompanying drawing 1, in common nozzle outlet, place one by a big end and the slip orifice plate 6 that small end constitutes with valve body 1, flap 2, screw rod 4, valve gap 3, handwheel 5 etc., big end external diameter is slightly less than the nozzle outlet internal diameter, thin and five apopores that evenly distribute of periphery, the small end center is drilled with through hole, and slip orifice plate 6 is installed in nozzle outlet inside by small end mode outwardly; A spring 7 is being housed near the right side of slip orifice plate 6, and an end of spring 7 is against on the thin large end face of slip orifice plate 6 peripheries; An interface 8, the annular seating 9 that it is through hole that the center of interface 8 studs with a center, the left end pressing spring 7 of annular seating 9 are installed in outer end at nozzle outlet.
The operation principle of decompression voltage stabilizing fire hydrant is such: rotation hand wheel 5, open flap 2, current enter in the key 1 from water inlet, through slip orifice plate 6 centre bores and peripheral effluent hole, flow out from the through hole of interface annular seating 9, slide this moment and constitute the gap that can change between the small end face of orifice plate 6 and the annular seating, when water inlet hydraulic pressure raises, the thrust that effect of water pressure produces in slip orifice plate 6 left sides is greater than spring 7 elasticity tensions, slip orifice plate 6 is moved to the direction near annular seating 9, the gap that constitutes between 9 small end faces of slip orifice plate 6 and the annular seating reduces, and resistance strengthened when current passed through, and made delivery port hydraulic pressure drop to required force value; When water inlet hydraulic pressure is low, the thrust that effect of water pressure produces in slip orifice plate 6 left sides is less than spring 7 elasticity tensions, slip orifice plate 6 is moved to the direction away from annular seating 9, the gap that constitutes between the small end face of slip orifice plate 6 and the annular seating 9 increases, current by the time resistance reduce, make water outlet hydraulic pressure be raised to required force value.Therefore should decompression voltage stabilizing fire hydrant can be according to water inlet hydraulic pressure size, regulate slip orifice plate small end automatically and and the current gap between the annular seating, form suitable water resistance, play the effect of stablizing delivery port hydraulic pressure.
Decompression voltage stabilizing fire hydrant as shown in Figure 2, groove of edge car system of the slip orifice plate 6 big ends that the foregoing description is related, rubber damping circle 10 of suit in groove, then slip orifice plate 6 is fit in the nozzle outlet by small end mode outwardly, and keep between rubber damping circle 10 and the delivery port inwall certain frictional force being arranged, its effect is when 6 motions of slip orifice plate, because damping action does not produce vibrations.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit originally all still belongs in the scope of technical solutions of the utility model simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. a decompression voltage stabilizing fire hydrant is characterized in that in the common nozzle outlet with valve body, flap, valve gap, screw rod, handwheel etc., has constituted a decompression stable-pressure device by the annular seating at slip orifice plate, spring and interface center.The slip orifice plate is made of a big end and a small end, holds external diameter to be slightly less than the nozzle outlet internal diameter greatly, thin and uniform several apopores of its periphery, and there is a through hole at the small end center, and the slip orifice plate is installed in nozzle outlet inside by small end mode outwardly; A spring is being housed near the outside of slip orifice plate, and an end of spring is against on the thin large end face of slip orifice plate periphery; An interface, the annular seating that it is through hole that the center of interface studs with a center, the left end pressing spring of annular seating are installed in outer end at nozzle outlet.
2. decompression voltage stabilizing fire hydrant according to claim 1 increases a damped ring between the edge of the big end of its slip orifice plate and the delivery port inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240789 CN2555876Y (en) | 2002-07-18 | 2002-07-18 | Pressure-relief and pressure-regulating fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240789 CN2555876Y (en) | 2002-07-18 | 2002-07-18 | Pressure-relief and pressure-regulating fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2555876Y true CN2555876Y (en) | 2003-06-18 |
Family
ID=33713801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240789 Expired - Fee Related CN2555876Y (en) | 2002-07-18 | 2002-07-18 | Pressure-relief and pressure-regulating fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2555876Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480113A (en) * | 2013-10-12 | 2014-01-01 | 江苏耀捷建设工程有限公司 | Fire hydrant |
| CN105344047A (en) * | 2015-11-30 | 2016-02-24 | 李功文 | Pressure reduction and stabilization structure of fire hydrant |
-
2002
- 2002-07-18 CN CN 02240789 patent/CN2555876Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480113A (en) * | 2013-10-12 | 2014-01-01 | 江苏耀捷建设工程有限公司 | Fire hydrant |
| CN105344047A (en) * | 2015-11-30 | 2016-02-24 | 李功文 | Pressure reduction and stabilization structure of fire hydrant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030618 Termination date: 20100718 |