CN204601448U - A kind of pressure-reducing indoor fire hydrant - Google Patents
A kind of pressure-reducing indoor fire hydrant Download PDFInfo
- Publication number
- CN204601448U CN204601448U CN201520224936.2U CN201520224936U CN204601448U CN 204601448 U CN204601448 U CN 204601448U CN 201520224936 U CN201520224936 U CN 201520224936U CN 204601448 U CN204601448 U CN 204601448U
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- Prior art keywords
- pressure
- fire hydrant
- delivery port
- orifice plate
- decompression
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000006837 decompression Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a kind of pressure-reducing indoor fire hydrant, there is the decompressor be located in the valve body delivery port passage of fire hydrant, this decompressor comprises shunting orifice plate, restricting orifice and balancing spring, along the water outlet direction of valve body delivery port passage, shunting orifice plate and restricting orifice are located in valve body delivery port passage side by side, and balancing spring flexibly supports between shunting orifice plate and restricting orifice.This Novel pressure-reducing type indoor fire hydrant achieves the decompression of general room fire hydrant, as long as in pressure relief ranges, no matter how pressure fluctuates and changes in pipe network, its outlet pressure all can be decompressed in desirable use force value, this decompression performance almost can reach the voltage stabilizing bolt effect of standard, and decompression performance is very excellent.Both not too large through post-decompression water flow pressure, affect the gripping of fire fighter, also can not be too little, affect extinguishing effect.
Description
Technical field
The utility model relates to a kind of fire hydrant device, specifically refers to a kind of pressure-reducing indoor fire hydrant.
Background technology
Indoor fire hydrant is the facility of pipe network in house to delivery of water, is the equipment of the fire fighting supplies such as factory, warehouse, skyscraper, public place and boats and ships.Usually be arranged in fire hydrant box, support the use with the equipment such as fire hose, hydraulic giant.When there being fire alarm, open fire hydrant box rapidly, take out water-band, hydraulic giant, be connected on the fire coupling of fire hydrant by water-band one end, the other end is connected with hydraulic giant, immediately fire hydrant handwheel is pressed counterclockwise Unscrew, can sprinkling fire.But because pressure in pipe network is comparatively large, cause from the water flow pressure of general room fire hydrant injection just comparatively large, personnel are not easy to operate in fire extinguishing, affect extinguishing effect.Therefore, pressure-reducing indoor fire hydrant is just widely used, pressure-reducing indoor fire hydrant refer to by key or key entery and delivery port automatic throttling gear is set, realize the indoor fire hydrant reducing outlet pressure after bolt.
A lot of pressure-reducing indoor fire hydrant effect of easing stress on existing market are not ideal, pressure relief ranges is too narrow, and what have only has 0.6MPa ~ 0.8MPa, and after decompression, outlet pressure is also less, only have 0.23MPa ~ 0.27MPa, comparatively unfavorable to the scene of a fire that larger pressure flow need be used to put out a fire.Be illustrated in figure 2 a kind of common reduced pressure type indoor fire hydrant, its operation principle is because key water outlet is provided with pressure reducing orifice 1 ＇, the aperture of pressure reducing orifice 1 ＇ is significantly smaller than the aperture of water inlet, makes the water flow pressure of outflow delivery port be less than the water flow pressure of water inlet, to reach effect of easing stress.But because the aperture of pressure reducing orifice immobilizes, decompression performance is sensitive not rapidly, and the scope that can reduce pressure is just very narrow.Due to the limitation of pressure reducing orifice 1 ＇ constant aperture, substantially less than normal through post-decompression delivery port pressure, be unfavorable for the scene of a fire instant fire extinguishment that the condition of a fire is serious.And, owing to only reducing pressure by one piece of pressure reducing orifice, big ups and downs change is produced due to unexpected once source pressure, the hydraulic pressure penetrating delivery port after decompression also will produce rapid fluctuation thereupon, the reaction force of the fire-fighting lance of water-band end is also constantly changed, fire fighter more not easily holds, once slip out of the hand very easily endanger personal safety.
Utility model content
The purpose of this utility model is to provide a kind of pressure-reducing indoor fire hydrant, provides the decompressor that a kind of performance that reduces pressure is very excellent, both not too large through its post-decompression water flow pressure, affects the gripping of fire fighter, also can not be too little, affects extinguishing effect.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of pressure-reducing indoor fire hydrant, there is the decompressor be located in the valve body delivery port passage of fire hydrant, this decompressor comprises shunting orifice plate, restricting orifice and balancing spring, along the water outlet direction of valve body delivery port passage, shunting orifice plate and restricting orifice are located in valve body delivery port passage side by side, and balancing spring flexibly supports between shunting orifice plate and restricting orifice.
Described shunting orifice plate and restricting orifice are equipped with the draw-in groove for holding balancing spring.
After adopting such scheme, this Novel photo is for the beneficial effect of prior art: during fire hydrant work, and press water indoor fire hydrant water inlet flows into, and flows out after decompressor from delivery port.When pressure exceedes setup pressure value, hydraulic pressure through decompressor will be greater than the precompression of Compress Spring generation to the active force that shunting orifice plate produces, promote shunting orifice plate to move outside fire hydrant, the Curtain area that confluxes between shunting orifice plate and restricting orifice is reduced.Along with the increase gradually of water inlet pressure, balancing spring will be compressed thereupon gradually, water pressure pushing shunting orifice plate moves always outside fire hydrant, and the Curtain area that makes to conflux reduces gradually along with the increase gradually of water inlet pressure, and delivery port hydraulic pressure is reduced within the scope of ideal value all the time.
The actual internal area of this Novel pressure-reducing type indoor fire hydrant reduces along with the increase of water flow pressure, the amplitude of decompression is larger, the scope that can reduce pressure is just wider, and thus the authorized pressure scope of water inlet is just comparatively wide, and water inlet pressure allows between 0.5MPa ~ 1.2MPa.
This Novel pressure-reducing type indoor fire hydrant is owing to being provided with balancing spring in decompressor, even if source pressure produces fluctuation change, the current flowing through decompressor also can tend to be steady under the active force of balancing spring, make the water flow pressure of injection delivery port can not big ups and downs, the reaction force of fire-fighting lance also just can held stationary, fire fighter is more prone to hold water (flow) direction, efficiently and accurately more of putting out a fire, also reliably safer.
Accompanying drawing explanation
Fig. 1 is the structural representation of this Novel pressure-reducing type indoor fire hydrant;
Fig. 2 is the structural representation of existing common reduced pressure type indoor fire hydrant.
Label declaration
1--valve body 2--valve seat
3--flap 4--valve rod
5--valve stem nut 6--valve gap
7--handwheel 8--internal thread fixed interface
9--decompressor 91--shunts orifice plate
92--restricting orifice 93--spring
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this case is described in further detail.
This case relates to a kind of pressure-reducing indoor fire hydrant, is specifically related to the decompressor of fire hydrant.As shown in Figure 1, the overall structure of fire hydrant comprises valve body 1, valve seat 2, flap 3, valve rod 4, valve stem nut 5, valve gap 6 and handwheel 7.The water outlet of valve body 1 is provided with internal thread fixed interface 8.
This novel fire hydrant decompressor 9 is located in the delivery port passage of valve body 1, and as shown in Figure 1, this decompressor 9 comprises shunting orifice plate 91, restricting orifice 92 and balancing spring 93.Water outlet direction along the delivery port passage of valve body 1 is fore-and-aft direction, and shunting orifice plate 91 and restricting orifice 92 are located in delivery port passage with front and back side-by-side configuration, and balancing spring 93 flexibly supports between shunting orifice plate 91 and restricting orifice 92.Preferably, in order to be beneficial to the overall package of decompressor, on shunting orifice plate 91 and restricting orifice 92, be equipped with the draw-in groove for holding balancing spring 93.Only balancing spring 93 need be positioned in the draw-in groove between shunting orifice plate 91 and restricting orifice 92 by direction as shown during assembling, then a whole set of decompressor 9 be loaded in valve body delivery port passage, with instrument, restricting orifice 92 is locked.
During work, rotation hand wheel 7 makes flap 3 open, and press water indoor fire hydrant water inlet flows into, and flows out after decompressor 9 from delivery port.When pressure exceedes setup pressure value, through the precompression that the hydraulic pressure of decompressor 9 will be greater than Compress Spring 93 to the active force that shunting orifice plate 91 produces and produces, promote shunting orifice plate 92 (in figure right direction) outside fire hydrant mobile, the Curtain area that confluxes between shunting orifice plate 91 and restricting orifice 92 is reduced.Along with the increase gradually of water inlet pressure, balancing spring 93 will be compressed thereupon gradually, water pressure pushing shunting orifice plate 91 moves always outside fire hydrant, and the Curtain area that makes to conflux reduces gradually along with the increase gradually of water inlet pressure, and delivery port hydraulic pressure is reduced within the scope of ideal value all the time.
The actual internal area of this Novel pressure-reducing type indoor fire hydrant reduces along with the increase of water flow pressure, the amplitude of decompression is larger, the scope that can reduce pressure is just wider, and thus the authorized pressure scope of water inlet is just comparatively wide, and water inlet pressure allows between 0.5MPa ~ 1.2MPa.
The Novel pressure-reducing type indoor fire hydrant post-decompression delivery port water flow pressure researched and developed for making this is more reasonable, we are through repetitious adjusted design size, such as, in this cover decompressor, the aperture of restricting orifice 92 is just more difficult determines, if because the aperture of restricting orifice 92 reduces, although the hydraulic pressure flowing out delivery port in theory after decompression also will reduce, but because the hydraulic pressure retained in chamber between shunting orifice plate 91 and restricting orifice 92 being made to raise after the aperture reduction of restricting orifice 92, water pressure pushing is shunted when orifice plate 91 moves outside fire hydrant more difficult slow, the Curtain area that confluxes reduces slowly, decompression rate also decreases, along with the rising of water inlet hydraulic pressure, the water flow pressure of delivery port point may be made bigger than normal.Otherwise, if the aperture of restricting orifice 92 increases, although the hydraulic pressure of delivery port also will increase in theory, but because the hydraulic pressure retained between shunting orifice plate 91 and restricting orifice 92 being made to reduce after the aperture increase of restricting orifice 92, water pressure pushing shunting orifice plate 91 is mobile more quick outside fire hydrant, and the Curtain area that confluxes reduces speed and accelerates, and decompression rate also increases thereupon, along with the rising of water inlet hydraulic pressure, the hydraulic pressure pressure of delivery port point may be made again less than normal.
In order to make the water flow pressure all-the-time stable of delivery port after decompression within the scope of ideal value, we have passed through multiple fine scheming and calculate and repetition test, the principal parameter of the pressure reduction structure finally determined is as follows: restricting orifice center bore is φ 26-30 millimeter, shunting orifice plate center bore is φ 4-8 millimeter, and the aperture of the tap hole (being provided preferably with 5 around centre bore) of shunting orifice plate is φ 12-16 millimeter.A wherein most preferred embodiment, restricting orifice center bore is φ 28 millimeters, and shunting orifice plate center bore is φ 6 millimeters, and the aperture of the tap hole (being provided preferably with 5 around centre bore) of shunting orifice plate is φ 14 millimeters.The performance that reduces pressure as follows can be reached: when value is 0.5MPa, 0.7MPa, 1.0MPa and 1.2MPa to water inlet pressure respectively in pressure relief ranges, delivery port pressure can be stabilized in 0.27MPa ± 0.02MPa, 0.35MPa ± 0.02MPa, 0.30MPa ± 0.02MPa and 0.35MPa ± 0.02MPa respectively, this decompression performance almost can reach the voltage stabilizing bolt effect of standard, and decompression performance is very excellent.Both not too large through post-decompression water flow pressure, affect the gripping of fire fighter, also can not be too little, affect extinguishing effect.
This Novel pressure-reducing type indoor fire hydrant achieves the decompression of general room fire hydrant, as long as in pressure relief ranges, no matter how pressure fluctuates and changes in pipe network, its outlet pressure all can be decompressed in desirable use force value, thus in engineering design without the need to calculating, need not debug during installation.And when key bottom increases whirligig, also can realize rotating pressure-decreasing type indoor fire hydrant, also can two decompressors are contained on bivalve twin valve body, composition bivalve two outlet pressure-reducing indoor fire hydrant, therefore the utility model has higher expansion and practicality, wide market.
The foregoing is only the preferred embodiment that this is novel, all equalizations done with this novel right change and modify, and all should belong to the scope of this novel claim.
Claims (2)
1. a pressure-reducing indoor fire hydrant, there is the decompressor be located in the valve body delivery port passage of fire hydrant, it is characterized in that: this decompressor comprises shunting orifice plate, restricting orifice and balancing spring, along the water outlet direction of valve body delivery port passage, shunting orifice plate and restricting orifice are located in valve body delivery port passage side by side, and balancing spring flexibly supports between shunting orifice plate and restricting orifice.
2. a kind of pressure-reducing indoor fire hydrant as claimed in claim 1, is characterized in that: described shunting orifice plate and restricting orifice are equipped with the draw-in groove for holding balancing spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224936.2U CN204601448U (en) | 2015-04-15 | 2015-04-15 | A kind of pressure-reducing indoor fire hydrant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224936.2U CN204601448U (en) | 2015-04-15 | 2015-04-15 | A kind of pressure-reducing indoor fire hydrant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204601448U true CN204601448U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520224936.2U Expired - Fee Related CN204601448U (en) | 2015-04-15 | 2015-04-15 | A kind of pressure-reducing indoor fire hydrant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344047A (en) * | 2015-11-30 | 2016-02-24 | 李功文 | Pressure reduction and stabilization structure of fire hydrant |
| CN110237474A (en) * | 2019-07-31 | 2019-09-17 | 尹秀兰 | A kind of fire hydrant |
| CN115738152A (en) * | 2022-09-29 | 2023-03-07 | 劲源科技发展有限公司 | Rotary automatic pressure-reducing and pressure-stabilizing indoor fire hydrant |
-
2015
- 2015-04-15 CN CN201520224936.2U patent/CN204601448U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344047A (en) * | 2015-11-30 | 2016-02-24 | 李功文 | Pressure reduction and stabilization structure of fire hydrant |
| CN110237474A (en) * | 2019-07-31 | 2019-09-17 | 尹秀兰 | A kind of fire hydrant |
| CN115738152A (en) * | 2022-09-29 | 2023-03-07 | 劲源科技发展有限公司 | Rotary automatic pressure-reducing and pressure-stabilizing indoor fire hydrant |
| CN115738152B (en) * | 2022-09-29 | 2023-08-25 | 劲源科技发展有限公司 | Rotary automatic pressure-reducing and pressure-stabilizing indoor hydrant |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160822 Address after: 362300 Quanzhou City, Fujian Province, the success of science and Technology Industrial Zone, Nanan Patentee after: FUJIAN TIANGUANG FIRE FIGHTING Co.,Ltd. Address before: 362300 Quanzhou City, Fujian Province, the success of science and Technology Industrial Zone, Nanan Patentee before: TIANGUANG FIRE-FIGHTING INCORPORATED CO. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |