CN108969929A - The design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty - Google Patents
The design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty Download PDFInfo
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- CN108969929A CN108969929A CN201810653439.2A CN201810653439A CN108969929A CN 108969929 A CN108969929 A CN 108969929A CN 201810653439 A CN201810653439 A CN 201810653439A CN 108969929 A CN108969929 A CN 108969929A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/0242—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft by spraying extinguishants from the aircraft
Abstract
The invention discloses a kind of design methods of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty, optimal ejection pressure limit and fire extinguishing aqua range of flow are obtained including simulation unmanned plane high-altitude fire-extinguishing test, obtain the cruise duration of the fire extinguishing aqua amount and unmanned plane extinguishing device that carry needed for unmanned plane extinguishing device, the step of selecting the engine model of unmanned plane extinguishing device, selecting the rotor mode and rotor revolving speed of unmanned plane extinguishing device.The present invention can provide data basis and foundation for each parameter designing of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty, can solve the problems, such as unmanned plane extinguishing device heavy-duty.
Description
Technical field
The present invention relates to transmission line of electricity fireproofing technique fields, and in particular to a kind of transmission line forest fire heavy-duty efficiently nobody
The design method of machine extinguishing device.
Background technique
It is influenced by production and living, mountain fire has spread the overwhelming majority of countries in the world such as Canada, the U.S. and China.Extra-high voltage
A lot of trippings and locking stoppage in transit event have occurred because of mountain fire in recent years in AC/DC transmission line, and mountain fire, which has become, seriously threatens big electricity
The safe operation of the net hot issue new with social normal power supply.
Transmission line forest fire is carried out and is put out a fire, is the effective governing measure for avoiding mountain fire sprawling from causing line tripping.But it is defeated
Electric line mountain fire site traffic bad environments, especially high and steep mountains height locating for UHV transmission line are much larger than 100 meters,
Brambles are luxuriant, no walking road, and personnel's arrival scene of a fire time is long, influence the timeliness of mountain fire disposition.Currently, manned helicopter goes out
Ignition technique is applied in forest-fire model, there is following advantage: 1) can overcome landform unfavorable factor, can quickly reach the scene of a fire
It puts out a fire, solves the problems, such as that fire extinguishing equipment can not reach the scene of a fire because of landform obstruction；2) flight flexibly, is swift in response, is suitable for
The multi-point and wide-ranging mountain fire fire extinguishing of power grid；3) unmanned plane fire extinguishing be not required to personnel closely contacted with fire, so as to avoid manual extinguishing
Security risk has ensured personnel safety.But helicopter price is up to tens million of members, and flies and examine stringent, flight cost height；
Also, power grid mountain fire point many areas is small, and the aqua utilization rate that fire extinguishing is spilt in the throwing of helicopter well-bucket is low, and sprinkling drop width is big, easily
The alternate tripping of transmission line of electricity is caused, many unfavorable factors limit its application in the anti-mountain fire of transmission line of electricity.Therefore, it is necessary to carry out
The small flow fire-fighting technique research of transmission line forest fire unmanned plane and application, make up lacking for existing transmission line forest fire fire extinguishing equipment
It falls into, improves the safety and rapidity of fire extinguishing.
Currently, can not determine that high-altitude carries out transmission line forest fire and goes out there has been no the small flow TEST TO DISTINGUISH SPONTANEOUS in high-altitude is carried out
The range of the required flow of fire, pressure and range；Transmission line forest fire burnt area generally at 500 ㎡, and it is existing nobody
Machine is generally less than 10kg by engine type selecting and the matched limitation of rotor, load-carrying, can not carry fire extinguishing aqua and spray appliance into
Row fire extinguishing；In addition, the structure and size design of the fire extinguishing system of unmanned plane extinguishing device are huge on the influence of its extinguishing effect.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art, and it is big to provide a kind of transmission line forest fire
The design method of weight efficient unmanned plane extinguishing device can be the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty
Each parameter designing provides data basis and foundation, can solve the problems, such as unmanned plane extinguishing device heavy-duty.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty, comprising the following steps:
(A) unmanned plane high-altitude fire-extinguishing test is simulated, the optimal ejection of aqua of putting out a fire under the conditions of selected fire extinguishing sprayer is obtained
Pressure P range and fire extinguishing aqua flow Q range, the optimal ejection pressure P range obtained according to test and fire extinguishing aqua flow Q
Range, design meet the fire extinguishing aqua feed system of the ejection pressure P range and aqua flow Q range of putting out a fire；
(B) the fire extinguishing aqua total amount S needed for 80 square metres or less transmission line forest fires that saves is obtained, 0.6 allowance is taken, obtains
Obtaining the fire extinguishing aqua amount carried needed for unmanned plane extinguishing device is 1.6S；According to the fighting scene of a fire designed by unmanned plane extinguishing device
Quantity sets the T in cruise duration of unmanned plane extinguishing device；
(C) the fire extinguishing aqua amount carried needed for the unmanned plane extinguishing device obtained and unmanned plane are calculated according to step (B)
The self weight of extinguishing device selects the engine model of unmanned plane extinguishing device；
(D) according to the rotor mode and rotor revolving speed of the engine model selection unmanned plane extinguishing device of step (C) selection.
Above-mentioned design method, it is preferred that obtained in the step (A) and put out a fire aqua under the conditions of selected fire extinguishing sprayer most
Good ejection pressure P range and fire extinguishing aqua flow Q range specifically use it is following step by step:
(a1) simulation unmanned plane high-altitude fire-extinguishing test platform is built, which includes the simulation scene of a fire (1), height and water
Prosposition displacement regulating device (2) is mounted on height and the Fire water syringe (3) in horizontal displacement regulating device (2), is mounted on fire extinguishing water
Fire extinguishing sprayer on rifle (3), the fire extinguishing aqua high-voltage power supply (4) being connected with Fire water syringe (3) and high for adjusting fire extinguishing aqua
The pressure adjusting module of potential source output pressure；
(a2) it is using height and the distance away the ground H of horizontal displacement regulating device adjustment Fire water syringe, each adjusting step
1m, adjusting range 0-10m；At Fire water syringe in each distance away the ground H, starting fire extinguishing aqua high-voltage power supply, and adjust and go out
The output pressure of fiery aqua high-voltage power supply make spray pressure P successively reach 0.5MPa, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa and
6MPa is recorded in each distance away the ground H and sprays the horizontal-jet distance L of fire extinguishing aqua in the case of pressure PijIt is landed with fluidic channel
The cover width W at placeij；
(a3) in each distance away the ground H and ejection pressure P, from the corresponding horizontal-jet distance L of Fire water syringeijPlace
The setting simulation scene of a fire, starting fire extinguishing aqua high-voltage power supply are put out a fire, the record fire extinguishing aqua flow Q and attack time t used that puts out a fire；
(a4) compare fire extinguishing fire extinguishing aqua flow Q used and attack time in each distance away the ground H and fire extinguishing pressure P
T selects optimal distance away the ground H, sprays pressure P and fire extinguishing aqua flow Q, and obtains the fire extinguishing dress of the unmanned plane in step (B)
The fire extinguishing aqua amount carried needed for setting is 1.6S=1.6*Q*t.
Above-mentioned design method, it is preferred that the fire extinguishing aqua feed system include the fire extinguishing aqua high-voltage power supply (4) and
The pressure adjusting module, the fire extinguishing aqua high-voltage power supply become a mandarin pump (42) including fire extinguishing aqua case (41), primary Minitype electric
With second-stage electric booster pump (43), it is described primary Minitype electric become a mandarin pump (42) entrance by pipeline with put out a fire aqua case
(41) be connected, the entrance of the second-stage electric booster pump (43) by pipeline and primary Minitype electric become a mandarin pump (42) out
Mouth is connected, and the outlet of the second-stage electric booster pump (43) is connected by pipeline with Fire water syringe (3)；The pressure is adjusted
Module includes adjusting primary Minitype electric to become a mandarin first adjustment module and the adjusting miniature increasing of second-stage electric of pump (42) output pressure
Second adjustment module of press pump (43) output pressure.
Above-mentioned design method, it is preferred that the fire extinguishing aqua case (41) includes the cabinet with inner cavity, and the cabinet is set
There is the partition that inner cavity is separated into multiple separate chambers, each separate chamber is interconnected.
Above-mentioned design method, it is preferred that the fire extinguishing aqua case (41), which is mounted on, makes put out a fire aqua case (41), fuel tank
Unloaded center of gravity and fully loaded center of gravity are in the position in the center of gravity conical surface, are the quiet of the entire flight envelope of man-machine extinguishing device to meet
The requirement of state balance.
Above-mentioned design method, it is preferred that fire extinguishing aqua case (41) top is provided with air pressure balance mouth.
Above-mentioned design method, it is preferred that fire extinguishing aqua case (41) is whole by the high-intensitive 5A02 with a thickness of 1.5mm
Aluminium alloy is made.
Above-mentioned design method, it is preferred that step (C) use is following step by step:
(c1) relationship for utilizing disk loading p and power loading q of the unmanned plane extinguishing device under operating condition of hovering, according to public affairs
Engine power is calculated in formula (1):
In formula, q is power loading, and unit is N/kW；P is disk loading, and unit is N/m2；A is engine altitude characteristic
Coefficient；ξ is power efficiency；η0For hovering efficiency；Δ is atmosphere relative density；
(c2) according to the engine power load q for calculating the unmanned plane extinguishing device obtained, and sea level installation function is corresponded to
Rate >=40kW (53Hp) selects the engine model of unmanned plane extinguishing device；
(c3) suitable engine model is selected according to engine power.
Above-mentioned design method, it is preferred that the step (D) is specifically:
In formula,For blade aerodynamic load coefficient, value is 0.15~0.21；σ is blade solidity；ρ is atmospheric density；R is paddle
Leaf length；G is unmanned plane extinguishing device hovering weight；VtipFor tip speed.
Compared with the prior art, the advantages of the present invention are as follows:
1, the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty of the present invention carries out different height, no
With pressure Imitating unmanned plane fire-extinguishing test, optimal pressure, flow and range needed for the high-effect fire-extinguishing of high-altitude can be obtained, is
The fire extinguishing aqua amount carried needed for unmanned plane extinguishing device and design in cruise duration provide data basis, are transmission line forest fire
The design of unmanned plane extinguishing device provides complete, feasible method；It is calculated based on the relationship of disk loading and power loading
Engine demand power devises the blade revolving speed of unmanned plane extinguishing device, and can meet makes unmanned plane extinguishing device heavy-duty, height
Imitate the requirement of fire extinguishing.
2, design method of the invention can obtain heavy-duty, efficient unmanned plane extinguishing device power and rotor parameter, be
Unmanned plane extinguishing device engine type selecting and rotor parameter designing provide foundation, by selecting unmanned plane extinguishing device engine
With the crucial kinetic parameter of rotor, unmanned plane extinguishing device heavy-duty is solved the problems, such as；
3, design method of the invention devise be suitable for high-altitude fire extinguishing unmanned plane extinguishing device fire extinguishing system structure with
Fire-fighting efficiency can be improved in parameter, realizes high-effect fire-extinguishing.
Detailed description of the invention
Fig. 1 is the flow chart of the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty.
Fig. 2 is the structural schematic diagram of high-altitude fire-extinguishing test platform.
Fig. 3 is the structural schematic diagram of fire extinguishing aqua feed system.
Fig. 4 is the schematic cross-sectional view of fire extinguishing aqua case.
Marginal data:
1, the scene of a fire is simulated；2, height and horizontal displacement regulating device；3, Fire water syringe；4, fire extinguishing aqua high-voltage power supply；41, it goes out
Fiery aqua case；411, partition；42, primary Minitype electric becomes a mandarin pump；43, second-stage electric booster pump.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the design method of the efficient unmanned plane extinguishing device of the transmission line forest fire heavy-duty of the present embodiment, packet
Include following steps:
(A) unmanned plane high-altitude fire-extinguishing test is simulated, the optimal ejection of aqua of putting out a fire under the conditions of selected fire extinguishing sprayer is obtained
Pressure P range and fire extinguishing aqua flow Q range, the optimal ejection pressure P range obtained according to test and fire extinguishing aqua flow Q
Range, design meet the fire extinguishing aqua feed system of the ejection pressure P range and aqua flow Q range of putting out a fire；
Obtain the fire extinguishing optimal ejection pressure P range of aqua and fire extinguishing aqua flow Q model under the conditions of selected fire extinguishing sprayer
It encloses, specifically uses following steps:
(a1) build simulation unmanned plane high-altitude fire-extinguishing test platform, as shown in Fig. 2, the test platform include simulation the scene of a fire 1,
Height and horizontal displacement regulating device 2 are mounted on height and the Fire water syringe 3 in horizontal displacement regulating device 2, are mounted on fire extinguishing
Fire extinguishing sprayer on hydraulic giant 3, the fire extinguishing aqua high-voltage power supply 4 being connected with Fire water syringe 3 and for adjusting fire extinguishing aqua high-voltage power supply
The pressure adjusting module of output pressure；
(a2) it is using height and the distance away the ground H of horizontal displacement regulating device adjustment Fire water syringe, each adjusting step
1m, adjusting range 0-10m；At Fire water syringe in each distance away the ground H, starting fire extinguishing aqua high-voltage power supply, and adjust and go out
The output pressure of fiery aqua high-voltage power supply make spray pressure P successively reach 0.5MPa, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa and
6MPa is recorded in each distance away the ground H and sprays the horizontal-jet distance L of fire extinguishing aqua in the case of pressure PijIt is landed with fluidic channel
The cover width W at placeij；
(a3) in each distance away the ground H and ejection pressure P, from the corresponding horizontal-jet distance L of Fire water syringeijPlace
The setting simulation scene of a fire, starting fire extinguishing aqua high-voltage power supply are put out a fire, the record fire extinguishing aqua flow Q and attack time t used that puts out a fire；
(a4) compare fire extinguishing fire extinguishing aqua flow Q used and attack time in each distance away the ground H and fire extinguishing pressure P
T selects optimal distance away the ground H, sprays pressure P and fire extinguishing aqua flow Q, obtains water of putting out a fire under the conditions of selected fire extinguishing sprayer
The optimal ejection pressure P of agent is 1.5MPa and fire extinguishing aqua flow Q is 10L/min；Preferably, the above optimal distance away the ground H,
Spray pressure P and fire extinguishing aqua flow Q, be in fire extinguishing fire extinguishing aqua flow Q used multiplied by attack time t for minimum value when it is right
Distance away the ground H, the ejection pressure P and fire extinguishing aqua flow Q answered.
(B) according to fire extinguishing aqua flow Q and attack time t, the fire extinguishing carried needed for unmanned plane extinguishing device is calculated
Aqua total amount is S=Q*t, and obtaining fire extinguishing aqua total amount S needed for transmission line forest fire when saving 80 square metres is 40L, takes 0.6
Allowance, obtain unmanned plane extinguishing device needed for carry fire extinguishing aqua amount be 1.6S=64L；
According to the quantity (being designed as 3) in the fighting scene of a fire designed by unmanned plane extinguishing device, unmanned plane extinguishing device is set
T in cruise duration should be greater than 1.2h, take nargin to 2h；
(C) the fire extinguishing aqua amount carried needed for the unmanned plane extinguishing device obtained and unmanned plane are calculated according to step (B)
The self weight of extinguishing device selects the engine model of unmanned plane extinguishing device；
(D) according to the rotor mode and rotor revolving speed of the engine model selection unmanned plane extinguishing device of step (C) selection.
In the present embodiment, the fire extinguishing aqua feed system of unmanned plane extinguishing device includes above-mentioned fire extinguishing aqua high-voltage power supply 4
And pressure adjusting module, as shown in figure 3, fire extinguishing aqua high-voltage power supply includes that fire extinguishing aqua case 41, primary Minitype electric become a mandarin pump 42
With second-stage electric booster pump 43, primary Minitype electric become a mandarin pump 42 entrance by pipeline with put out a fire aqua case 41 be connected,
The entrance of second-stage electric booster pump 43 is connected by the become a mandarin outlet of pump 42 of pipeline and primary Minitype electric, and second-stage electric is micro-
The outlet of type booster pump 43 is connected by pipeline with Fire water syringe 3；Pressure adjusting module includes adjusting primary Minitype electric to become a mandarin
Pump the first adjustment module (not shown) and the second of adjusting 43 output pressure of second-stage electric booster pump of 42 output pressures
Adjustment module (not shown).Since unmanned plane extinguishing device load-carrying is smaller, gasoline engine and high-pressure hydraulic pump conduct can not be carried
The power source of the power source of transmission line forest fire fire extinguishing system, unmanned plane extinguishing device can only start power traction from unmanned plane
12V-24V power supply out, therefore aqua high-voltage power supply of putting out a fire can not use presently commercially available 220V electric water pump, and voltage range is full
The micro pump of foot then has that pressure is too small, and the problem of spray distance deficiency needs unmanned plane extinguishing device directly to hover over fire
The positive overhead in field, there are security risks.The above-mentioned fire extinguishing aqua feed system that the present invention designs can not only adapt to the dynamic of unmanned plane
Power source, moreover it is possible to realize big injection pressure and big spray distance, make unmanned plane extinguishing device without hovering over the positive overhead in the scene of a fire, avoid
The presence of security risk.
In the present embodiment, as shown in figure 4, fire extinguishing aqua case 41 includes the cabinet with inner cavity, cabinet is equipped with inner cavity point
It is divided into the partition 411 of multiple separate chambers, each separate chamber is interconnected.Since fire extinguishing aqua case 41 has, volume is big, puts out a fire
Aqua there may be foam, weight change speed is fast the features such as, increased inside water tank partition 411 inner cavity is separated into it is multiple
Interconnected separate chamber can increase the damping of liquid sloshing, mitigate and shake and reduce generation foam.Preferably, multiple
Separate chamber is to be arranged parallel the strip chamber of arrangement.
In the present embodiment, fire extinguishing aqua case 41, which is mounted on, makes put out a fire aqua case 41, fuel tank zero load center of gravity and fully loaded center of gravity
It is in the position in the center of gravity conical surface, to meet the static balancing requirement for being the entire flight envelope of man-machine extinguishing device.
In the present embodiment, fire extinguishing 41 top of aqua case is provided with air pressure balance mouth, and diameter 50mm is arranged in fire extinguishing aqua case 41
Heavy caliber filler, 3/4 inch of water outlet, the anti-mouth of a river of 3/8 bore and two 3/8 bores fluid level markings mouth, upper
1/8 inch of air pressure balance mouth is arranged in portion, meets big flow demand.Fire extinguishing aqua case 41 is machining box, and capacity is greater than 500L,
Aqua case 41 of putting out a fire is whole by being made with a thickness of the high-intensitive 5A02 aluminium alloy of 1.5mm.First adjustment module and second adjusts mould
Block uses commercially available Y-100 model specification, and height and horizontal displacement regulating device 2 are formed from height adjustment device and X-Y to sliding block,
Wherein, height adjustment device uses commercially available SJY0.3-6, X-Y to use commercially available two axial cross slide unit of FTS40XY to sliding block.It goes out
Fiery hydraulic giant 3 uses commercially available SWERAQ direct current spray gun.
In the present embodiment, step (C) use is following step by step:
(c1) relationship for utilizing disk loading p and power loading q of the unmanned plane extinguishing device under operating condition of hovering, according to public affairs
Engine power is calculated in formula (1):
In formula, q is power loading, and unit is N/kW；P is disk loading, and unit is N/m2, specific value 11.84N/m2；A
For engine altitude characteristic coefficient, value 0.77；ξ is power efficiency, value 0.8；η0For hovering efficiency, value 0.274；
Δ is atmosphere relative density, value 0.813；
(c2) according to the engine power load q≤70N/kW for calculating the unmanned plane extinguishing device obtained, and Hai Ping is corresponded to
Face installed power >=40kW (53Hp), considers certain surplus.Determine that sea level engine power is 60Hp；
(c3) suitable engine model is selected according to engine power.
In the present embodiment, step (D) is specifically: tip speed is obtained according to formula (2),
In formula,For blade aerodynamic load coefficient, value be 0.15~0.21 (character pair section lift coefficient 0.45~
0.525)；σ is blade solidity, value 0.127；ρ is atmospheric density, value 1.225；R is blade length, value 5.943m；G is
Unmanned plane extinguishing device hovering weight；VtipFor tip speed.Above-mentioned loading coefficientValue range efficiency with higher.
In above-mentioned unmanned plane extinguishing device, this body weight be 170kg, fire extinguishing aqua amount be 64kg, fuel weight 35kg,
Fire extinguishing aqua feed system weight is 15kg.Unmanned plane extinguishing device hovers weight G as 170kg+64kg+35kg+15kg=
284kg.Finally being calculated and corresponding to tip speed in most advantageous blade aerodynamic load coefficient range is 162.28m/s.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty, which is characterized in that including following
Step:
(A) unmanned plane high-altitude fire-extinguishing test is simulated, the optimal ejection pressure P of aqua that puts out a fire under the conditions of selected fire extinguishing sprayer is obtained
Range and fire extinguishing aqua flow Q range, the optimal ejection pressure P range obtained according to test and fire extinguishing aqua flow Q range,
Design meets the fire extinguishing aqua feed system of the ejection pressure P range and aqua flow Q range of putting out a fire；
(B) the fire extinguishing aqua total amount S needed for 80 square metres or less transmission line forest fires that saves is obtained, 0.6 allowance is taken, obtains nothing
The fire extinguishing aqua amount carried needed for man-machine extinguishing device is 1.6S；According to the number in the fighting scene of a fire designed by unmanned plane extinguishing device
Amount sets the T in cruise duration of unmanned plane extinguishing device；
(C) the fire extinguishing aqua amount carried needed for the unmanned plane extinguishing device obtained is calculated according to step (B) and unmanned plane is put out a fire
The self weight of device selects the engine model of unmanned plane extinguishing device；
(D) according to the rotor mode and rotor revolving speed of the engine model selection unmanned plane extinguishing device of step (C) selection.
2. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 1, special
Sign is, the optimal ejection pressure P range of fire extinguishing aqua and fire extinguishing under the conditions of selected fire extinguishing sprayer are obtained in the step (A)
Aqua flow Q range specifically use it is following step by step:
(a1) simulation unmanned plane high-altitude fire-extinguishing test platform is built, which includes the simulation scene of a fire (1), height and horizontal position
Displacement regulating device (2) is mounted on height and the Fire water syringe (3) in horizontal displacement regulating device (2), is mounted on Fire water syringe
(3) fire extinguishing sprayer on, the fire extinguishing aqua high-voltage power supply (4) being connected with Fire water syringe (3) and for adjusting fire extinguishing aqua high pressure
The pressure adjusting module of source output pressure；
(a2) it is 1m using height and the distance away the ground H of horizontal displacement regulating device adjustment Fire water syringe, each adjusting step, adjusts
Whole range is 0-10m；At Fire water syringe in each distance away the ground H, starting fire extinguishing aqua high-voltage power supply, and adjust fire extinguishing aqua
The output pressure of high-voltage power supply makes ejection pressure P successively reach 0.5MPa, 1MPa, 2MPa, 3MPa, 4MPa, 5MPa and 6MPa, records
The horizontal-jet distance L of fire extinguishing aqua in each distance away the ground H and ejection pressure PijWith the covering at fluidic channel landing
Width Wij；
(a3) in each distance away the ground H and ejection pressure P, from the corresponding horizontal-jet distance L of Fire water syringeijPlace's setting
The scene of a fire is simulated, starting fire extinguishing aqua high-voltage power supply is put out a fire, the record fire extinguishing aqua flow Q and attack time t used that puts out a fire；
(a4) compare the fire extinguishing aqua flow Q and attack time t used that puts out a fire, choosing in each distance away the ground H and fire extinguishing pressure P
It selects optimal distance away the ground H, spray pressure P and fire extinguishing aqua flow Q, and obtain the unmanned plane extinguishing device institute in step (B)
The fire extinguishing aqua amount that need to be carried is 1.6S=1.6*Q*t.
3. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 2, special
Sign is, the fire extinguishing aqua feed system includes the fire extinguishing aqua high-voltage power supply (4) and the pressure adjusting module, described to go out
Fiery aqua high-voltage power supply (4) includes that fire extinguishing aqua case (41), primary Minitype electric become a mandarin pump (42) and second-stage electric booster pump
(43), the primary Minitype electric become a mandarin pump (42) entrance by pipeline with put out a fire aqua case (41) be connected, the second level is electric
The entrance of actuating miniature booster pump (43) is connected by the become a mandarin outlet of pump (42) of pipeline and primary Minitype electric, the second-stage electric
The outlet of booster pump (43) is connected by pipeline with Fire water syringe (3)；The pressure adjusting module includes adjusting primary electrical
Actuating miniature become a mandarin pump (42) output pressure the first adjustment module and adjust second-stage electric booster pump (43) output pressure
Second adjustment module.
4. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 3, special
Sign is that the fire extinguishing aqua case (41) includes the cabinet with inner cavity, and the cabinet, which is equipped with, is separated into multiple independences for inner cavity
The partition (411) of chamber, each separate chamber are interconnected.
5. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 3, special
Sign is that the fire extinguishing aqua case (41), which is mounted on, to be made to put out a fire aqua case (41), fuel tank zero load center of gravity and fully loaded center of gravity are located
Position in the center of gravity conical surface, to meet the static balancing requirement for being the entire flight envelope of man-machine extinguishing device.
6. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 3, special
Sign is that fire extinguishing aqua case (41) top is provided with air pressure balance mouth.
7. the design method of the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to claim 3, special
Sign is that fire extinguishing aqua case (41) is whole by being made with a thickness of the high-intensitive 5A02 aluminium alloy of 1.5mm.
8. the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to any one of claim 1 to 7 is set
Meter method, which is characterized in that step (C) use is following step by step:
(c1) relationship for utilizing disk loading p and power loading q of the unmanned plane extinguishing device under operating condition of hovering, according to formula
(1) engine power is calculated:
In formula, q is power loading, and unit is N/kW；P is disk loading, and unit is N/m2；A is engine altitude characteristic coefficient；ξ
For power efficiency；η0For hovering efficiency；Δ is atmosphere relative density；
(c2) the engine power load q of the unmanned plane extinguishing device obtained according to calculating, and corresponding sea level installed power >=
40kW selects the engine model of unmanned plane extinguishing device；
(c3) suitable engine model is selected according to engine power.
9. the efficient unmanned plane extinguishing device of transmission line forest fire heavy-duty according to any one of claim 1 to 7 is set
Meter method, which is characterized in that the step (D) is specifically:
In formula,For blade aerodynamic load coefficient, value is 0.15~0.21；σ is blade solidity；ρ is atmospheric density；R is that blade is long
Degree；G is unmanned plane extinguishing device hovering weight；VtipFor tip speed.
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Application publication date: 20181211 |