CN2553012Y - Pressure-reducing pressure-stabilizing fire hydrant - Google Patents
Pressure-reducing pressure-stabilizing fire hydrant Download PDFInfo
- Publication number
- CN2553012Y CN2553012Y CN 02238326 CN02238326U CN2553012Y CN 2553012 Y CN2553012 Y CN 2553012Y CN 02238326 CN02238326 CN 02238326 CN 02238326 U CN02238326 U CN 02238326U CN 2553012 Y CN2553012 Y CN 2553012Y
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- piston
- dividing plate
- hydrant
- pressure
- water outlet
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Abstract
The utility model provides a depressurizing and pressure-stabilizing hydrant, which comprises a valve body of a common hydrant, a valve clack, a valve cap, a screw, a handwheel and an interface, and is characterized in that a depressurizing and pressure-stabilizing component, which comprises a baffle, a sealing ring, a clapboard, a piston and a spring, is arranged at an inner side of a water outlet of the hydrant. The baffle with water outlet holes around is positioned on an internal end in the water outlet of the hydrant, the sealing ring and the clapboard are disposes orderly at an outside of the baffle, a hole is arranged in the center of the clapboard, screw threads are processed on a ring face outside the clapboard and are screwed with the inner side of the water outlet; a small end of the piston is inserted into a center hole of the clapboard, a big end is positioned on an inner wall of the water outlet of the hydrant and a through hole is disposed in a center part of the piston; the spring is arranged in a space formed by the piston, the clapboard and the inner wall of the water outlet of the hydrant. An end of the spring is relied on the clapboard and the other end is propped on a large end face of the piston; exhaust holes are arranged on a sidewall of the water outlet of the hydrant. The hydrant is not influenced by the pressure at the water inlet and can stabilize the variable water pressures of at the water inlet to the required water pressure of the water outlet. The reduced water pressure at the water outlet is stable and reliable, so as to ensure the normal and effective fire fighting.
Description
Affiliated technical field
The utility model relates to the hydrant with decompression voltage stabilizing function that a kind of fire fighting system is used, and particularly under the situation that bigger water inlet pressure changes, has and makes delivery port pressure stability hydrant within the specific limits.
Background technology
Present development along with highrise building, various decompression type hydrants have appearred, these decompression type hydrants are under the less situation of water inlet pressure range, can play certain depressurization, delivery port pressure also changed thereupon when water inlet pressure changed, and can not guarantee the delivery port pressure stability, therefore can not satisfy actual use needs, particularly when water inlet pressure is higher, cause the delivery port superpressure, influence fire-fighting work and normally carry out.
Summary of the invention
The purpose of this utility model is to provide a kind of decompression voltage stabilizing hydrant, this hydrant is not subjected to the influence of water inlet pressure, can be automatically the water inlet stable water pressure that changes to required delivery port hydraulic pressure value, post-decompression delivery port stable water pressure, reliable guarantees that fire-fighting work is normally, effectively carry out.This hydrant is simple in structure, is convenient to large quantities of processing, production.
First kind of technical scheme that its technical problem that solves the utility model adopts is: the nozzle outlet installed inside at valve body, flap, valve gap, screw rod, handwheel and interface that common hydrant had has the decompression voltage regulation part that is made of baffle plate, joint ring, dividing plate, piston and spring.The baffle plate periphery has weep hole, be installed in inner end, nozzle outlet inside, joint ring and the dividing plate that centre bore is arranged are being housed successively near the outside of baffle plate, are being processed with screw thread on the anchor ring of the dividing plate outside, screwing in delivery port and also simultaneously baffle plate and joint ring are fixed; Piston is packed in the delivery port, its small end inserts the dividing plate centre bore, and big end inserts the nozzle outlet inwall, and the piston core is a through hole: spring places in the space that constitutes between piston, dividing plate and the nozzle outlet inwall, the one end leans against on the dividing plate, and the other end is against on the piston large end face; Have steam vent on the nozzle outlet sidewall, the space that spring is placed is communicated with atmosphere, and piston is along in the nozzle outlet inwall move left and right process, air interference by compression; For preventing that piston from skidding off from the nozzle outlet end, can piston be blocked by the interface that is installed in the nozzle outlet end.The principle that realizes the decompression voltage stabilizing function is: current are entered in the key by water inlet, through the gap of baffle plate perimeter hole and baffle plate and the formation of piston small end face, flow out from the piston central through hole, and delivery port hydraulic pressure reacts on the big bottom of piston portion.When delivery port hydraulic pressure raises, the power that hydraulic action produces in the big bottom of piston portion makes piston to moving near the baffle plate direction greater than spring tension force, and the gap that forms between piston small end face and the baffle plate reduces, resistance increased when current passed through, and made water outlet hydraulic pressure drop to required force value; When delivery port hydraulic pressure is low, the power that hydraulic action produces in the big bottom of piston portion is less than the elasticity tension of spring, and piston is to moving away from the baffle plate direction, and the gap that forms between piston small end face and the baffle plate increases, current by the time resistance reduce, make delivery port hydraulic pressure be raised to required force value.Therefore should reduce pressure the voltage stabilizing hydrant can be according to delivery port hydraulic pressure size, and the current gap between regulating piston and the baffle plate forms suitable water resistance automatically, plays the effect of stablizing delivery port hydraulic pressure; And in this process, piston moves the influence that is not subjected to water inlet hydraulic pressure.
Second kind of technical scheme that its technical problem of solving the utility model adopts is: noted earlier and the dividing plate external surface can be smooth cylindrical, after the adjacent dividing plate, install a guide pin bushing additional between nozzle outlet inwall and the big end outer ring surface of piston, the interface that is installed in the nozzle outlet end can be fixed in dividing plate, joint ring and baffle plate in the delivery port by guide pin bushing; Piston can slide at the guide pin bushing inner surface; Having steam vent on the guide pin bushing and be communicated with steam vent on the delivery port sidewall.
In first kind of technical scheme, can on the contact surface of piston small end and dividing plate or on big end of piston and the valve body contact surface sealing ring be installed, also can sealing ring be housed simultaneously at two places, anti-sealing enters the space that spring is placed in the piston motion process, avoids the spring corrosion.
In second kind of technical scheme, can on the contact surface of piston small end and dividing plate or on big end of piston and the guide pin bushing contact surface sealing ring be installed, also can sealing ring be housed simultaneously at two places.
The beneficial effects of the utility model are can regulate, stablize delivery port hydraulic pressure automatically, and under the situation of water inlet variation in water pressure, keep the delivery port stable water pressure.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing 1 is first kind of example structure figure of the utility model.
Accompanying drawing 2 is second kind of example structure figure of the utility model.
Accompanying drawing 3 is the third example structure of the utility model figure.
Among the figure: 1. valve body; 2. flap; 3. screw rod; 4. valve gap; 5. handwheel: 6. baffle plate; 7. joint ring; 8. dividing plate; 9. steam vent; 10. spring; 11. piston; 12. interface; 13. guide pin bushing; 14. sealing ring.
By the decompression voltage stabilizing hydrant shown in the accompanying drawing 1, in the hydrant valve body 1 that flap 2, valve gap 4, screw rod 3, handwheel 5 and interface 12 are housed, the inner end in its delivery port inboard, place the baffle plate 6 that a periphery has weep hole, and then the joint ring 7 of packing into, the dividing plate 8 that an outer ring surface is processed with external screw thread and has a centre bore is screwed on the delivery port inwall of valve body 1 and with baffle plate 6 and joint ring 7 and is fixed; Core is the piston 11 of through hole, and its small end inserts dividing plate 8 centre bores, and big end inserts in the nozzle outlet inwall, and piston 11 can slide in nozzle outlet; Spring 10 places in the space that constitutes between piston 11, dividing plate 8 and the nozzle outlet inner surface, the one end leans against on the dividing plate 8, the other end is against on piston 11 large end faces, have steam vent 9 on the nozzle outlet sidewall, spring 10 placement spaces are communicated with atmosphere, guarantee piston 11 along in the nozzle outlet inwall move left and right process, air does not disturb by compression.By an interface 12 that is connected the nozzle outlet end piston 11 is blocked, prevent that piston 11 from skidding off from the nozzle outlet end.
The operating principle of decompression voltage stabilizing hydrant is such: rotation hand wheel, open flap by screw rod, current enter in the valve body, are flowed out from the piston central through hole through the gap that baffle plate and piston small end face form by the baffle plate perimeter hole, and the delivery port hydraulic action is in the big bottom of piston portion.When delivery port hydraulic pressure bigger, the power that hydraulic action produces in the big bottom of piston portion makes piston to moving near the baffle plate direction during greater than spring tension force, and the gap that causes forming between piston small end face and the baffle plate reduces, resistance strengthened when current passed through, and made hydraulic pressure drop to required water outlet hydraulic pressure value; When delivery port hydraulic pressure is low, the power that hydraulic action produces in the big bottom of piston portion causes piston to moving away from the baffle plate direction less than the elasticity tension of spring, and the gap that forms between piston small end face and the baffle plate increases, current by the time resistance reduce, hydraulic pressure is raised to required water outlet hydraulic pressure value.Therefore should reduce pressure the voltage stabilizing hydrant can be according to delivery port hydraulic pressure size, and the current gap between regulating piston and the baffle plate forms suitable water resistance automatically, plays the effect of stablizing delivery port hydraulic pressure; And in this process, because piston moves the influence that is not subjected to water inlet hydraulic pressure, so the variation of intake pressure can not influence the stable of delivery port hydraulic pressure.
Decompression voltage stabilizing hydrant as shown in Figure 2, the external surface of the dividing plate 10 that the foregoing description is related is made the smooth face of cylinder, be placed in the nozzle outlet, in its outside and be close on the nozzle outlet inside wall and increase a cylindrical shape guide pin bushing 13, the small end of piston 11 inserts dividing plate 8 centre bores, big end inserts in the guide pin bushing 13, and piston 11 can horizontally slip in guide pin bushing 13; On guide pin bushing 13, have a hole, and connect, guarantee that the placement space of spring 10 is communicated with atmosphere with steam vent 9 on the nozzle outlet sidewall; By screwing interface 12 baffle plate 6, joint ring 7, dividing plate 8, guide pin bushing 13 are compressed and be fixed on the nozzle outlet inboard, can prevent that also piston 11 from skidding off from the nozzle outlet end.
Decompression voltage stabilizing hydrant as shown in Figure 3, on the center bore inner wall of the related dividing plate 8 of second embodiment and at piston 11 big end outer ring surfaces difference car one grooves, and in each groove, place a sealing ring 14, the small end insertion of piston 11 is had in dividing plate 8 centre bores of sealing ring 14, the big end of piston 11 inserts in the guide pin bushing 13 together with cover sealing ring 14 thereon, the effect of placing sealing ring 14 is when piston 11 slides, anti-sealing enters the space that spring is placed, and avoids the spring corrosion.
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 to the scope of technical solutions of the utility model to simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. decompression voltage stabilizing hydrant has valve body, flap, valve gap, screw rod, handwheel and the interface of common hydrant, it is characterized in that the nozzle outlet installed inside has the decompression voltage regulation part that is made of baffle plate, joint ring, dividing plate, piston and spring; Baffle plate that a periphery has a weep hole is installed in the inner inner end of nozzle outlet, near the baffle plate outside joint ring and dividing plate is housed successively, the dividing plate center has a hole, and outside anchor ring is processed with screw thread, by being threadedly connected to the delivery port inboard; The small end of piston inserts the dividing plate centre bore, and big end is contained in the nozzle outlet inwall, and the piston core is a through hole; Spring places in the space that constitutes between piston, dividing plate and the nozzle outlet inwall, and the one end leans against on the dividing plate, and the other end is against on the piston large end face; Have steam vent on the nozzle outlet sidewall; Interface is installed in the port of export of valve body, and sealing mat is equipped with in the junction.
2. decompression voltage stabilizing hydrant according to claim 1 is characterized in that dividing plate outside anchor ring can be the smooth face of cylinder; Between nozzle outlet inwall and the big end outer ring surface of piston, install a guide pin bushing additional after near dividing plate, have steam vent on the guide pin bushing and be communicated with steam vent on the delivery port sidewall; The small end of piston inserts the dividing plate centre bore, and big end is contained in the guide pin bushing.
3. decompression voltage stabilizing hydrant according to claim 1 is characterized in that on dividing plate and piston small end contact surface or valve interior wall and the big end in contact face of piston sealing ring being housed, and also can sealing ring be housed simultaneously at two places.
4. decompression voltage stabilizing hydrant according to claim 2 is characterized in that on dividing plate and piston small end contact surface or guide pin bushing and the big end in contact face of piston sealing ring being housed, and also can sealing ring be housed simultaneously at two places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02238326 CN2553012Y (en) | 2002-07-02 | 2002-07-02 | Pressure-reducing pressure-stabilizing fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02238326 CN2553012Y (en) | 2002-07-02 | 2002-07-02 | Pressure-reducing pressure-stabilizing fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553012Y true CN2553012Y (en) | 2003-05-28 |
Family
ID=33712054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02238326 Expired - Fee Related CN2553012Y (en) | 2002-07-02 | 2002-07-02 | Pressure-reducing pressure-stabilizing fire hydrant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553012Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955447A (en) * | 2017-05-12 | 2017-07-18 | 惠安县长智电子科技有限公司 | A kind of anti-dragging fire hydrant of slips dock |
| CN113026868A (en) * | 2021-03-22 | 2021-06-25 | 劲源科技发展有限公司 | Interface installation self-adaptive intelligent fire hydrant and use method thereof |
| CN115006771A (en) * | 2022-06-13 | 2022-09-06 | 江苏国荣安防装备科技有限公司 | Hydraulic valve for intelligent indoor fire hydrant |
-
2002
- 2002-07-02 CN CN 02238326 patent/CN2553012Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955447A (en) * | 2017-05-12 | 2017-07-18 | 惠安县长智电子科技有限公司 | A kind of anti-dragging fire hydrant of slips dock |
| CN113026868A (en) * | 2021-03-22 | 2021-06-25 | 劲源科技发展有限公司 | Interface installation self-adaptive intelligent fire hydrant and use method thereof |
| CN113026868B (en) * | 2021-03-22 | 2022-06-07 | 劲源科技发展有限公司 | Interface installation self-adaptive intelligent fire hydrant and use method thereof |
| CN115006771A (en) * | 2022-06-13 | 2022-09-06 | 江苏国荣安防装备科技有限公司 | Hydraulic valve for intelligent indoor 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: 20030528 Termination date: 20110702 |