CN102728020A - Pulsed jet fire-fighting lance - Google Patents
Pulsed jet fire-fighting lance Download PDFInfo
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- CN102728020A CN102728020A CN 201110083654 CN201110083654A CN102728020A CN 102728020 A CN102728020 A CN 102728020A CN 201110083654 CN201110083654 CN 201110083654 CN 201110083654 A CN201110083654 A CN 201110083654A CN 102728020 A CN102728020 A CN 102728020A
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Abstract
The invention provides a pulsed jet fire-fighting lance, which comprises a connecting piece, a rectifying device, a conical nozzle and a pulse nozzle hermetically and fixedly connected and communicated with one another in sequence, wherein the inlet of the rectifying device is hermetically and fixedly connected with the connecting piece; and other parts are in threaded connection and communication with one another through a sealing pipe. In the invention, the inlet end of the lance is provided with the rectifying device, so that the turbulence of jet is reduced, and the range is increased by 10-25 percent compared with the conventional lance; a continuous fluid flowing through an oscillation cavity is transformed into pulsed jet by using the special structure of the oscillation cavity without other additional auxiliary equipment; and the amplitude of outflow pressure is increased by 15-30 percent, so that the hitting dynamics and fire-fighting effect of the lance are enhanced under the condition of the same water flow, energy consumption is saved, and the performance of the fire-fighting lance is improved effectively. The pulsed jet fire-fighting lance can be widely applied to fire-fighting and cleaning systems of a fire-fighting system.
Description
Technical field
The present invention relates to the efficient energy-saving device in fields such as fire-fighting, cleaning.This device can be widely used in the fire extinguishing and the purging system of fire-fighting system, and it can improve the jet length and fire extinguishing effect of fire-fighting lance jet.
Background technology
At present the jet of fire-fighting lance often is divided into two types of compact system and dispersive jets, can spray hydraulic giant such as the straight stream nozzle and the tape holder hydraulic giant of compact system, can spray hydraulic giant such as the water fog nozzle and the multi-jet squirt etc. of dispersive jet.Hydraulic giant acts as different forms with water just, makes the water through hydraulic giant can not only reach the purpose of rapid fire extinguishing, and the fire can not water puted out a fire to save life and property of the part that can also be used to put out a fire to save life and property.For straight stream nozzle, mainly be used for spraying intensive columnar water stream and put out a fire or cool off, its jet has far firing range, flow is big, mechanical impact force is strong, protect characteristics such as area is big, is hydraulic giant the most frequently used in the fire fighting.For water fog nozzle, the vaporific current of ejection, drop diameter generally below 100 μ m, have vaporization, cooling rate is fast, and it is strong to suffocate, cool off, impact emulsification, and the characteristics that the pressure loss is little can play good effect in the fire attack of many occasions.Used hydraulic giant generally adopts solid jet, and the pressure jet that comes out from high-pressure pump ejects through nozzle continuously, and the mobile of this jet is continuous, and fire extinguishing effect and jet length are all not ideal.
Summary of the invention
The present invention provides a kind of pulsing jet fire-fighting lance; Adopt the direct current hydraulic giant pattern that current stabilization-Taper Pipe transition-nozzle effluents; Adopt the honeycomb rectifier to eliminate harmful additional eddy current; The turbulivity of minimizing incoming flow can stably flow after making current get into hydraulic giant, reduces turbulivity, improves the jet quality.At fairing an impulse jet nozzle is installed at the back; Do not need the extrinsic motivated source; Utilize the structural change of nozzle itself just can make the Continuous Flow that gets into nozzle change pulsing jet into, improved the flow behavior of turbulent boundary layer bottom, reduced the drag losses of fluid in hydraulic giant.Pulsing jet has improved strength of attack and has strengthened the fire extinguishing effect, and fairing has then improved the jet length of giant jet.
Technical scheme of the present invention is: a kind of pulsing jet fire-fighting lance, adopt the direct current hydraulic giant pattern that current stabilization-Taper Pipe transition-nozzle effluents, and comprise fairing, conical nozzle, impulse jet nozzle and connector, connector adopts the fire-fighting lance general-purpose interface; The structure of fairing is: comprise a body, body is divided into stable section and rectifier, between connector and rectifier, is stable section, and the length of stable section is 1.5～2.5 times of dry tube diameter; Rectifier is the honeycomb type rectifier, and long 200～400 mm have 4～10 steel pipes, and weld with fixed head at the steel pipe two ends, is parallel to each other between the steel pipe, and the internal diameter of steel pipe is 0.15～0.25 times of internal diameter of tube body; Rectifier is equipped with a conical nozzle at the back, and the outlet diameter of conical nozzle is 0.25～0.8 times of inlet diameter, and the length of conical nozzle is 4～8 times of conical nozzle outlet diameter; Impulse jet nozzle is to be sealedly and fixedly connected by the vibration cavity of revolving body and following nozzle body to constitute; The inlet diameter of inlet tube wall toe-in to the cavity that vibrates of vibration cavity is corresponding with the outlet diameter of conical nozzle; The outlet of conical nozzle is fixedly connected with the arrival end of vibration cavity; The arrival end of vibration cavity has one section conical section identical with the tapering of conical nozzle; The arrival end of vibration cavity is 1.6～3 times of inlet diameter of impulse jet nozzle to the following distance of the arrival end of nozzle body, and the interior diameter of vibration cavity is 3～8.8 times of the inlet diameter of the cavity that vibrates; Following nozzle body employing tapering is 110 °～120 ° a truncated cone shape impact walls; The back segment of impulse jet nozzle has a cylindrical hole, and the diameter of through hole is 2～4 times of following nozzle diameter; The inlet of stable section is provided with the interface of connector, and connector is fixedly connected with stable section.
Beneficial effect of the present invention:
(1), need not under other situation that add auxiliary equipment; Utilize the special construction of vibration cavity; Change continuous fluid into pulsing jet after through the vibration cavity, and the magnitude of pressure applied of will effluenting improved 15%-30%, under the identical situation of the water yield; Improved the hitting dynamics and enhancing fire extinguishing effect of hydraulic giant, thereby energy efficient is effectively improved the hydraulic giant performance.
(2), this pulsing jet hydraulic giant adds the honeycomb fairing at arrival end, reduced the turbulivity of jet, rectifier is installed conical nozzle at the back, turbulivity further reduces, and the jet quality is improved greatly, the jet length of fire-fighting lance has improved 10%-25%.
(3), the recoil of pulsing jet hydraulic giant reduces, and operating personnel are felt relief.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Shown in the figure: 1, connector, 2, fairing, 3, conical nozzle, 4, the vibration cavity, 5, nozzle body down, 6, body, 7, stable section, 8, steel pipe, 9, fixed head.
The specific embodiment
As shown in Figure 1, connector 1, fairing 2, conical nozzle 3, vibration cavity 4 and following nozzle body 5 are installed on the same center line successively.Connector 1 adopts the fire-fighting lance general-purpose interface; Connector 1 interface size remains unchanged; The through-hole diameter of connector 1 is 56mm, and fairing 2 comprises that internal diameter is the body 6 of 60mm, and body 6 is divided into stable section and rectifier; Be stable section 7 between connector 1 and rectifier, the length of stable section 7 is 1.5～2.5 times of dry tube diameter; Connector 1 should be smoothly transitted into body, and body is provided with the interface of connector, adopts awl to connect (cone angle is 1.7 °) between the two; Rectifier adopts the honeycomb type rectifier, comprises that diameter is 4～10 of the steel pipes of 10～25mm, and thickness of steel pipe is 0.4～1mm, and weld with fixed head 9 at steel pipe 8 two ends, should guarantee that steel pipe 8 is parallel; Long 200～400 mm of rectifier; It is 8～13 conical nozzle 3 that rectifier is installed a coning angle at the back; The outlet diameter of conical nozzle 3 is 0.25～0.8 times of inlet diameter, and the length of conical nozzle is 4～8 times of conical nozzle outlet diameter, and the outlet of conical nozzle 3 is fixedly connected with the arrival end that is the vibration cavity 4 of revolving body; In order to guarantee smooth transition; The arrival end of vibration cavity has one section conical section identical with the cone angle of conical nozzle 3, and following nozzle body 5 adopts 110 °～120 ° truncated cone shape impact walls, and the outlet length of impulse jet nozzle generally is 1.5～3 times of impulse jet nozzle top nozzle diameter; Be connected to a cylindrical hole behind the following nozzle of impulse jet nozzle, the diameter of through hole is 2～4 times of following nozzle diameter.Connector 1, fairing 2, conical nozzle 3, vibration cavity 4 adopt successively with following nozzle body 5 and are fixedly connected through gas thread, and rectifier is welded on the body through fixed head, to guarantee the depth of parallelism of steel pipe in the rectification pipeline.The opening nose end of vibration cavity 4 is fixedly connected in aggregates with the gas thread that 5 employings of following nozzle body seal, oscillation chamber must symmetry and the concentricity of the nozzle up and down of impulse jet nozzle be not more than 0.05mm.
Described truncated cone shape impact walls is the platform of a truncated cone shape.
Operation principle of the present invention: after fluid got into the honeycomb rectifier, liquid was divided into several bursts of parallel flows, knows according to the Mu Huoci of Haier law; Can make the big high attenuation of turbulivity of incoming flow; The energy that vortex dissipates reduces, and can stably flow after making current get into hydraulic giant, improves the jet quality.Rectifier is equipped with conical nozzle at the back in addition, and conical nozzle has one section long distance (being stable section) after being connected to rectifier, and turbulivity is further reduced, and the jet quality improves greatly, can effectively increase the range of hydraulic giant.The pressure flow body that penetrates from conical nozzle 3 is when it arrives that impact walls of nozzle body 5 also interacts with it down; Produce the pressure oscillation ripple in the impact zone; This ripple is with velocity of sound propagate; Bring out new vorticity pulsation again, reverse each other when the pressure fluctuation that makes Disengagement zone and impact zone, will form the cyclic process that vorticity disturbance-amplification-new vorticity pulsation produces; Constantly repeat this process and in the vibration chamber, form strong self-oscillation, and go out through the following nozzle ejection of pulse nozzle with the mode of pulsing jet.
What the present invention produced is pulsing jet, and the magnitude of pressure applied of will effluenting has improved 15%-30%; Jet length has improved 10%-25%, and recoil reduces, and operating personnel are felt relief.
Claims (4)
1. the pulsing jet fire-fighting lance is characterized in that: adopt the direct current hydraulic giant pattern that current stabilization-Taper Pipe transition-nozzle effluents, comprise fairing, conical nozzle, impulse jet nozzle and connector, connector employing fire-fighting lance general-purpose interface; The structure of fairing is: comprise a body, body is divided into stable section and rectifier, between connector and rectifier, is stable section, and the length of stable section is 1.5～2.5 times of column diameter; Rectifier adopts the honeycomb type rectifier, and long 200～400 mm have 4-10 root steel pipe, and weld with fixed head at the steel pipe two ends, is parallel to each other between the steel pipe, and the internal diameter of steel pipe is 0.15～0.25 times of cylinder internal diameter; Rectifier is equipped with a conical nozzle at the back, and the outlet diameter of conical nozzle is 0.25～0.8 times of inlet diameter, and the length of conical nozzle is 4～8 times of conical nozzle outlet diameter; Impulse jet nozzle is by being that the vibration cavity of revolving body and be sealedly and fixedly connected with following nozzle body constitutes; The inlet diameter of inlet tube wall toe-in to the cavity that vibrates of vibration cavity is corresponding with the outlet of conical nozzle; The outlet of conical nozzle is fixedly connected with the arrival end of vibration cavity; The arrival end of vibration cavity has one section conical section identical with the tapering of conical nozzle; The arrival end of vibration cavity is 1.6～3 times of inlet diameter of impulse jet nozzle to the following distance of the arrival end of nozzle body, and the interior diameter of vibration cavity is 3～8.8 times of the cavity inlet diameter that vibrates; Following nozzle body employing tapering is 110 °～120 ° a truncated cone shape impact walls; The back segment of impulse jet nozzle has a cylindrical hole, and the diameter of through hole is 2～4 times of following nozzle diameter; The inlet of stable section is provided with the interface of connector, and connector is fixedly connected with stable section.
2. pulsing jet fire-fighting lance according to claim 1 is characterized in that: fairing, conical nozzle, impulse jet nozzle and connector are installed on the same axis.
3. pulsing jet fire-fighting lance according to claim 1 is characterized in that: the impact walls of following nozzle body is the platform of truncated cone shape.
4. pulsing jet fire-fighting lance according to claim 1, it is characterized in that: rectifier is welded on the body through fixed head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110083654 CN102728020A (en) | 2011-04-02 | 2011-04-02 | Pulsed jet fire-fighting lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110083654 CN102728020A (en) | 2011-04-02 | 2011-04-02 | Pulsed jet fire-fighting lance |
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| CN102728020A true CN102728020A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110083654 Pending CN102728020A (en) | 2011-04-02 | 2011-04-02 | Pulsed jet fire-fighting lance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463773A (en) * | 2013-09-12 | 2013-12-25 | 中国农业大学 | High-speed pulse air fire-extinguishing spray gun |
| CN104784856A (en) * | 2015-03-20 | 2015-07-22 | 江苏大学 | Fire monitor head |
| CN106694503A (en) * | 2016-12-10 | 2017-05-24 | 无锡银联齿轮传动机械有限公司 | Movable cleaning pressure head of handle tube pre-plating cleaning machine |
| CN108080159A (en) * | 2017-12-25 | 2018-05-29 | 浙江工业大学 | A kind of high pressure cavitation jet combines nozzle |
| CN110898361A (en) * | 2019-12-05 | 2020-03-24 | 孔仕华 | Arm beam assembly of silt-proof high-pressure fire-fighting robot |
-
2011
- 2011-04-02 CN CN 201110083654 patent/CN102728020A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463773A (en) * | 2013-09-12 | 2013-12-25 | 中国农业大学 | High-speed pulse air fire-extinguishing spray gun |
| CN103463773B (en) * | 2013-09-12 | 2019-11-05 | 中国农业大学 | High-speed pulse air fire extinguishing spray gun |
| CN104784856A (en) * | 2015-03-20 | 2015-07-22 | 江苏大学 | Fire monitor head |
| CN106694503A (en) * | 2016-12-10 | 2017-05-24 | 无锡银联齿轮传动机械有限公司 | Movable cleaning pressure head of handle tube pre-plating cleaning machine |
| CN108080159A (en) * | 2017-12-25 | 2018-05-29 | 浙江工业大学 | A kind of high pressure cavitation jet combines nozzle |
| CN110898361A (en) * | 2019-12-05 | 2020-03-24 | 孔仕华 | Arm beam assembly of silt-proof high-pressure fire-fighting robot |
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Application publication date: 20121017 |