CN114949712A - Flow control method and device and fire fighting truck - Google Patents
Flow control method and device and fire fighting truck Download PDFInfo
- Publication number
- CN114949712A CN114949712A CN202110220319.5A CN202110220319A CN114949712A CN 114949712 A CN114949712 A CN 114949712A CN 202110220319 A CN202110220319 A CN 202110220319A CN 114949712 A CN114949712 A CN 114949712A
- Authority
- CN
- China
- Prior art keywords
- speed
- real
- flow
- fire pump
- rotating speed
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Flow Control (AREA)
Abstract
The invention provides a flow control method, a flow control device and a fire fighting truck, wherein the method comprises the following steps: acquiring a current working mode and a real-time outlet flow of the speed-regulating fire pump; and if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode. The method, the device and the fire engine provided by the invention realize the rapid and accurate control of the outlet flow of the speed-regulating fire pump, are suitable for each working mode of the speed-regulating fire pump, and improve the flow control effect.
Description
Technical Field
The invention relates to the technical field of fire-fighting engineering, in particular to a flow control method and device and a fire engine.
Background
The airport fire truck is a fire truck which is specially used for preventing and extinguishing aircraft fire, timely rescues passengers on the aircraft and can spray fire extinguishing agent during the running of the fire truck. The main power foam vehicle is mainly provided with a quick-speed transfer vehicle and a main power foam vehicle, wherein the quick-speed transfer vehicle is also called a head vehicle, has small carrying capacity and small fire extinguishing capacity, but has extremely high speed, and is used for extinguishing fire and fighting first before the main power foam vehicle reaches the accident site of the airplane, controlling fire behavior and preventing spreading; the main force foam vehicle has the advantages of large liquid carrying amount, large fire extinguishing capability, strong fighting adaptability and complete equipment, and is a main fire extinguishing and rescuing vehicle for airport fire fighting.
Because the aircraft crash generally happens in the aircraft advancing process, the fixed fire hydrant can not be suitable, and the water in the fire-fighting tank on the airport fire truck is mainly used for fire extinguishment. When fire is extinguished, the water cannon is generally controlled to firstly use half flow to aim at a fire source in the process of rapid driving and then use full flow to extinguish fire, so that the water source is saved to the greatest extent.
At present, a half-flow control valve is generally used for adjustment, but the price is high, the cost is too high, the requirements of more and more airport fire-fighting vehicles cannot be met, or the rotating speed is adjusted through an open loop, the mode is too simple and extensive, the target rotating speed cannot be quickly and accurately adjusted, and the flow control effect of the fire extinguishing agent is poor.
Disclosure of Invention
The invention provides a flow control method, a flow control device and a fire engine, which are used for solving the problems that the flow of an outlet of a speed-regulating fire pump cannot be quickly and accurately regulated in the prior art, and the flow control effect of a fire extinguishing agent is poor.
The invention provides a flow control method, which comprises the following steps:
acquiring a current working mode and a real-time outlet flow of the speed-regulating fire pump;
and if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode.
According to the flow control method provided by the invention, the adjusting the real-time rotating speed of the speed-regulating fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode comprises the following steps:
determining a rotation speed gain coefficient based on the set outlet flow, the set adjustment coefficient and the real-time outlet flow in the current working mode;
and adjusting the real-time rotating speed of the speed-regulating fire pump based on the rotating speed gain coefficient.
According to the flow control method provided by the invention, the set flow control condition is that the real-time outlet flow is within a numerical range determined by the set outlet flow and the set flow deviation in the current working mode.
According to the flow control method provided by the invention, the current working mode and the real-time outlet flow of the speed-regulating fire pump are obtained, and then the method further comprises the following steps:
if the real-time outlet flow meets a set flow control condition and the real-time rotating speed meets a set rotating speed control condition, taking the real-time rotating speed as an initial rotating speed value of the speed-regulating fire pump in the current working mode;
the set rotating speed control condition is that the real-time rotating speed is within a numerical range determined by a target rotating speed corresponding to the set outlet flow and a set rotating speed deviation in the current working mode.
According to the flow control method provided by the invention, the initial value of the rotating speed of the speed-regulating fire pump is determined based on the target rotating speed corresponding to the set outlet flow in the current working mode.
According to the flow control method provided by the invention, the method for determining the initial value of the rotating speed comprises the following steps:
acquiring the valve state of a fire monitor arranged at the outlet of a speed-regulating fire pump;
and determining the initial rotating speed value of the speed-regulating fire pump based on the valve state and the current working mode of the speed-regulating fire pump.
According to the flow control method provided by the invention, the determining of the initial value of the rotating speed of the speed-regulating fire pump based on the valve state and the current working mode of the speed-regulating fire pump comprises the following steps:
and if the valve is closed, setting the initial rotating speed value of the speed-regulating fire pump as an idle rotating speed value.
The present invention also provides a flow control device comprising:
the acquiring unit is used for acquiring the current working mode of the speed-regulating fire pump and the real-time outlet flow;
and the control unit is used for adjusting the real-time rotating speed of the speed-regulating fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode if the real-time outlet flow does not meet the set flow control condition in the current working mode.
The present invention also provides an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the flow control method according to any one of the above methods when executing the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the flow control method as described in any one of the above.
The invention also provides a fire fighting truck, which comprises a controller, wherein the processor executes the program to realize the steps of any one of the flow control methods.
According to the flow control method, the flow control device and the fire engine, the current working mode of the speed-regulating fire pump and the real-time outlet flow are obtained; if the real-time outlet flow does not satisfy the set flow control condition in the current working mode, then based on the set outlet flow in the current working mode, set adjustment coefficient and real-time outlet flow, adjust the real-time rotating speed of the speed-adjusting fire pump, because the real-time outlet flow of the speed-adjusting fire pump is utilized as feedback to control the real-time rotating speed, the quick and accurate control of the outlet flow of the speed-adjusting fire pump is realized, the device is suitable for each working mode of the speed-adjusting fire pump, the flow control effect is improved, meanwhile, the use of fire extinguishing agents is saved by accurate flow control, and the fire extinguishing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a flow control method according to the present invention;
FIG. 2 is a schematic structural diagram of an airport fire truck system provided by the present invention;
FIG. 3 is a schematic flow chart of a method for controlling flow of an airport fire fighting vehicle according to the present invention;
FIG. 4 is a schematic view of a flow control device according to the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Most of the fire-fighting water provided by fire-fighting water sources need a fire pump for pressurization so as to meet the requirement on water quantity during fire extinguishment. In the embodiment of the invention, a speed-regulating fire pump on an airport fire truck is taken as an example for explanation.
Fig. 1 is a schematic flow chart of a flow control method provided by the present invention, and as shown in fig. 1, the method includes:
and step 110, acquiring the current working mode of the speed-regulating fire pump and the real-time outlet flow.
Specifically, the real-time outlet flow is the flow of water or other liquid fire extinguishing agents conveyed by the speed-regulating fire pump during operation. Generally, the speed-regulating fire pump is connected with a matched motor or a matched diesel engine through a coupler. When the motor or the diesel engine rotates, the impeller of the speed-regulating fire pump is driven to rotate through the coupler, so that pressure is applied to water or other liquid fire extinguishing agents, and mechanical energy is converted into kinetic energy or potential energy of liquid.
The speed-regulating fire pump realizes the regulation of outlet flow by regulating the rotating speed of the impeller of the water pump. The outlet flow of the speed-regulating fire pump corresponds to the rotating speed. The rotation speed of the water pump impeller can be achieved by adjusting the rotation speed of the matched motor or diesel engine, for example, the rotation speed can be adjusted by adjusting the working frequency of the motor pump, or the rotation speed can be adjusted by adjusting the working gear of the diesel engine.
The current working mode is the working mode of the speed-regulating fire pump at the current moment, and comprises a half-flow mode and a full-flow mode. In the half-flow mode, the speed-regulating fire pump has low rotating speed and small outlet flow, and is suitable for aiming a fire source in the process of quick running of a fire truck; under the full flow mode, speed governing fire pump rotational speed is high, and the export flow is big, is applicable to and realizes putting out a fire fast after aiming the fire source.
And 120, if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode.
Specifically, the flow control condition is set as an outlet flow control requirement which needs to be met by the preset speed-regulating fire pump in the current working mode. Because the speed-regulating fire pump works in different working modes, the requirement of each working mode on the outlet flow of the speed-regulating fire pump is different, namely, the set flow control condition in each working mode is also different. For example, in the half-flow mode, the set flow control condition may be that the outlet flow is less than 10 liters per second; in the full flow mode, the set flow control condition may be an outlet flow greater than 50 liters per second.
In each working mode, the set outlet flow and the set regulating coefficient of the speed-regulating fire pump in each working mode can be determined according to the performance parameters of the speed-regulating fire pump. And setting the outlet flow as the outlet flow required to be reached by the speed-regulating fire pump in the current working mode, and setting the regulating coefficient as the proportional coefficient when the speed-regulating fire pump regulates the flow in the current working mode, wherein the proportional coefficient is used for representing the speed of flow regulation. For example, the larger the set adjustment coefficient is, the faster the speed of outlet flow adjustment of the speed-regulating fire-fighting pump is, the smaller the set adjustment coefficient is, the slower the speed of outlet flow adjustment of the speed-regulating fire-fighting pump is. The setting of the adjustment coefficient can be set according to performance parameters and/or actual requirements of the speed-regulating fire pump, which is not particularly limited in the embodiment of the invention.
Under the current working mode, the set outlet flow and the real-time outlet flow of the speed-regulating fire pump can be compared, outlet flow deviation is determined, the speed degree of outlet flow regulation is determined according to the size of the set regulation coefficient, and the outlet flow and the rotation speed are in one-to-one correspondence, so that the outlet flow deviation and the set regulation coefficient can be mapped into the deviation of the rotation speed and the rotation speed regulation proportional gain, and the real-time rotation speed of the speed-regulating fire pump is regulated.
When the fire pump is switched from one working mode to another working mode, for example, the fire pump is switched from a half-flow mode to a full-flow mode, the rotating speed of the speed-regulating fire pump can be automatically and quickly regulated according to the set outlet flow and the set regulating coefficient in the working mode after switching and the real-time outlet flow during switching, so that the real-time outlet flow is regulated, and the fire-fighting requirement on the site is quickly met.
It should be noted that, the flow control method may be executed in a cycle all the time in the operating state of the speed-regulating fire pump, and the execution period may be set according to the actual situation.
According to the flow control method provided by the embodiment of the invention, the current working mode of the speed-regulating fire pump and the real-time outlet flow are obtained; if the real-time outlet flow does not satisfy the set flow control condition in the current working mode, then based on the set outlet flow in the current working mode, set adjustment coefficient and real-time outlet flow, adjust the real-time rotating speed of the speed-adjusting fire pump, because the real-time outlet flow of the speed-adjusting fire pump is utilized as feedback to control the real-time rotating speed, the quick and accurate control of the outlet flow of the speed-adjusting fire pump is realized, the device is suitable for each working mode of the speed-adjusting fire pump, the flow control effect is improved, meanwhile, the use of fire extinguishing agents is saved by accurate flow control, and the fire extinguishing cost is reduced.
Based on the above embodiment, step 120 includes:
determining a rotation speed gain coefficient based on the set outlet flow, the set adjustment coefficient and the real-time outlet flow in the current working mode;
and adjusting the real-time rotating speed of the speed-adjusting fire pump based on the rotating speed gain coefficient.
Specifically, the rotation speed gain factor is an amplification or reduction factor of the rotation speed adjustment. The real-time rotating speed can be adjusted by changing the rotating speed gain coefficient.
For example, in the current operating mode, when the set outlet flow is greater than the real-time outlet flow, the speed gain coefficient M may be formulated as:
in the formula, Q s For the set outlet flow under the current working mode, k is the set regulating coefficient under the current working mode, Q r Is the real-time outlet flow.
At the moment, the rotating speed gain coefficient M is used for amplifying the real-time rotating speed of the speed-regulating fire pump, namely the real-time outlet flow is consistent with the set outlet flow in a mode of increasing the real-time rotating speed.
In the current operating mode, when the set outlet flow is less than the real-time outlet flow, the rotation speed gain coefficient M may be expressed as:
in the formula, Q s Setting the outlet flow under the current working mode, wherein k is the current working modeSet regulation factor, Q, under formula r Is the real-time outlet flow.
At the moment, the rotating speed gain coefficient M is used for reducing the real-time rotating speed of the speed-regulating fire pump, namely the real-time outlet flow is consistent with the set outlet flow in a mode of reducing the real-time rotating speed.
According to the flow control method provided by the embodiment of the invention, the rotating speed gain coefficient is determined according to the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode, so that the real-time rotating speed of the speed-adjusting fire pump is adjusted, the calculation method is simple and convenient, the execution is easy, the complexity of the flow control algorithm is reduced, the operation efficiency of the flow control algorithm is improved, and the quick adjustment of the outlet flow of the speed-adjusting fire pump can be realized.
Based on any of the above embodiments, the set flow control condition is that the real-time outlet flow is within a value range determined by the set outlet flow and the set flow deviation in the current working mode.
Specifically, the set flow control condition may be determined according to the set outlet flow and the set flow deviation in the current operation mode.
For example, the real-time outlet flow of the governor fire pump is Q, and when the current operation mode is the half-flow mode, the outlet flow is set to Q 1 Setting the flow deviation to Q a Then, the set flow control condition may be:
Q 1 -Q a <Q<Q 1 +Q a
when the current working mode is the full-flow mode, the outlet flow is set to be Q 2 Setting the flow deviation to Q b Then, the set flow control condition may be:
Q 2 -Q b <Q<Q 2 +Q b
the flow control method provided by the embodiment of the invention determines the set flow control condition of the real-time outlet flow according to the set outlet flow and the set flow deviation in the current working mode, has the advantages of simple method and easy execution, reduces the complexity of the flow control algorithm, and improves the operation efficiency of the flow control algorithm.
Based on any of the above embodiments, the initial value of the rotation speed of the speed-regulating fire pump is determined based on the target rotation speed corresponding to the set outlet flow in the current working mode.
Specifically, the speed governing fire pump during operation need drive liquid fire extinguishing agent through the fire gun blowout rapidly to realize the express delivery and put out a fire. Therefore, when the speed-regulating fire pump is started, the initial value of the rotating speed of the speed-regulating fire pump can be reasonably set, so that the speed-regulating fire pump can be quickly started.
The initial value of the rotating speed of the speed-regulating fire pump can be set to be the target rotating speed corresponding to the set outlet flow in the current working mode. The target rotating speed is the rotating speed of the speed-regulating fire pump when the outlet flow is consistent with the set outlet flow in the current working mode. The target rotating speed corresponds to the set outlet flow one by one.
The target rotating speed can be calculated according to performance parameters of the speed-regulating fire pump, and can also be determined according to test results after multiple tests, and the embodiment of the invention is not particularly limited in this respect.
According to the flow control method provided by the embodiment of the invention, the target rotating speed corresponding to the set outlet flow in the current working mode is set as the initial rotating speed value of the speed-regulating fire pump, so that the speed-regulating fire pump can be quickly started, and the quick regulation of the outlet flow of the speed-regulating fire pump is realized.
Based on any embodiment, the method for determining the initial value of the rotating speed comprises the following steps:
acquiring the valve state of a fire monitor arranged at the outlet of a speed-regulating fire pump;
and determining the initial value of the rotating speed of the speed-regulating fire pump based on the state of the valve and the current working mode of the speed-regulating fire pump.
In particular, fire monitors are important fire fighting equipment for long-distance fighting of fires. The fire water monitor is composed of base, water inlet pipe, revolving body, water collecting pipe, jet regulating ring, handle and valve, and can be horizontally and vertically rotated and positioned. The fire monitor is generally installed in the exit of speed governing fire pump, and the fire fighter of being convenient for carries out the operation of putting out a fire. The liquid fire extinguishing agent used by the fire monitor comes from the outlet of the speed-regulating fire pump.
The service condition of the fire monitor can be fed back according to a travel switch arranged at a valve on the fire monitor, if the valve is opened, the speed-regulating fire pump is in a working state currently, and if the valve is closed, the speed-regulating fire pump is in a non-working state currently.
When the valve state of the fire monitor is open, the initial value of the rotating speed can be set for the speed-regulating fire pump according to the working mode of the speed-regulating fire pump, so that the speed-regulating fire pump can be started quickly. For example, when the operation mode of the adjustable-speed fire pump is the half-flow mode, the initial value of the rotation speed of the adjustable-speed fire pump can be V 1 ，V 1 Set outlet flow Q for speed-reducing fire pump in half-flow mode 1 A corresponding target rotational speed; when the working mode of the speed-regulating fire pump is the full-flow mode, the initial value of the rotating speed of the speed-regulating fire pump can be V 2 ，V 2 Set outlet flow Q for speed-reducing fire pump in full-flow mode 2 The corresponding target rotational speed.
Based on any one of the above embodiments, determining the initial value of the rotation speed of the speed-regulating fire pump based on the state of the valve and the current working mode of the speed-regulating fire pump comprises:
and if the valve is closed, setting the initial rotating speed value of the speed-regulating fire pump as an idle rotating speed value.
Specifically, when the valve state of the fire monitor is closed, the governor fire pump may be in a maintenance state or a test state.
If the initial value of the rotating speed of the speed-regulating fire pump is set to be larger, the rotor of the speed-regulating fire pump can generate a large amount of heat to damage the pump body. At the moment, the initial rotating speed value of the speed-regulating fire pump can be set to be the idle rotating speed value, and the idle rotating speed value is lower than the actual rotating speed of the speed-regulating fire pump during working, so that the speed-regulating fire pump can be effectively protected.
Based on any of the above embodiments, step 110 further includes:
if the real-time outlet flow meets the set flow control condition and the real-time rotating speed meets the set rotating speed control condition, taking the real-time rotating speed as the rotating speed initial value of the speed-regulating fire pump in the current working mode;
the set rotating speed control condition is that the real-time rotating speed is within a numerical range determined by the target rotating speed corresponding to the set outlet flow and the set rotating speed deviation in the current working mode.
Specifically, the rotation speed deviation is set as a difference value of the allowable deviation of the real-time rotation speed of the speed-regulating fire pump from the target rotation speed in the current working mode. If the difference value of the real-time rotating speed deviating from the target rotating speed is too large, the speed-regulating fire pump is possibly damaged.
The set rotating speed deviation corresponds to the working mode of the speed-regulating fire pump. For example, when the governed speed fire pump is in half-flow mode, the set speed deviation may be V a (ii) a When the speed-regulating fire pump is in the full-flow mode, the set rotating speed deviation can be V b . Because the rotating speed of the speed-regulating fire pump in the half-flow mode is lower than that in the full-flow mode, V a Can also be set to be smaller than V b 。
The set rotating speed control condition is the rotating speed control requirement which needs to be realized by the preset speed-regulating fire pump in the current working mode. For example, in half-flow mode, the outlet flow rate is set to Q 1 Setting the target rotating speed corresponding to the outlet flow as V 1 Setting the flow deviation to Q a Setting the deviation of the rotation speed as V a When the real-time flow of the speed-regulating fire pump is Q and the corresponding real-time rotating speed is V, the Q is obtained 1 -Q a <Q<Q 1 +Q a In time, the real-time rotating speed V should satisfy:
V 1 -V a <V<V 1 +V a
at this time, since the real-time outlet flow meets the set flow control condition and the real-time rotating speed meets the set rotating speed control condition, it indicates that the real-time outlet flow and the corresponding real-time rotating speed can achieve the same flow control effect as the set outlet flow and the corresponding target rotating speed, and the real-time rotating speed can be used as an initial rotating speed value of the speed-regulating fire pump in the current working mode and stored in the control system for the next flow control.
The set outlet flow of the speed-regulating fire pump cannot accurately correspond to the target rotating speed due to frequent change of working conditions or mechanical abrasion and the like, and the target rotating speed corresponding to the set outlet flow needs to be corrected for multiple times in the actual use process of the speed-regulating fire pump.
Based on any of the above embodiments, fig. 2 is a schematic structural diagram of the airport fire fighting vehicle system provided by the present invention, as shown in fig. 2, the dashed lines in the diagram represent system boundaries, the solid lines represent physical connection relationships, and the dashed lines represent electrical connection relationships. The system comprises a fire fighting system and a control system, wherein the fire fighting system comprises a water tank, a water pump, a flowmeter and a fire monitor, the control system comprises an engine, a speed sensor and a controller, the controller collects the outlet flow and the engine speed of the water pump, the engine is controlled to start and stop and regulate the speed, the engine drives the water pump to rotate through a transmission shaft, a valve of the fire monitor is opened and then water is pumped outwards, the controller adjusts the engine speed through the collected flow closed loop, and meanwhile, the rotating speed value under the target flow is corrected.
Fig. 3 is a schematic flow chart of the method for controlling flow of an airport fire fighting vehicle according to the present invention, as shown in fig. 3, the method is applied to the airport fire fighting vehicle system, and includes:
the first step is as follows: starting;
the second step is that: the controller judges whether the valve state of the fire monitor is opened, if the valve of the fire monitor is in the closed state, the controller controls the engine to return to the idle speed, the twentieth step is executed, and if the valve of the fire monitor is in the open state, the next step is executed;
the third step: the controller judges whether the half-flow function is started, if the half-flow function is started, the next step is executed, and if the half-flow function is closed, the twelfth step is executed;
the fourth step: the controller adjusts the rotating speed of the engine to be V1 and executes the next step;
the fifth step: the controller judges whether the current flow Q is within the deviation, and judges whether Q1-Qa < Q < Q1+ Qa is satisfied: if yes, executing the next step; if not, executing the eighth step:
and a sixth step: judging whether the corresponding engine speed V3 under the current flow Q is within the deviation, judging whether | V-V1| < Va is true, if so, executing the next step, and if not, executing the second step;
the seventh step: assigning the rotating speed value of V to V1, storing the value for next judgment, and executing the second step;
eighth step: the controller judges whether the current flow Q meets Q < Q1-Qa, if yes, the next step is executed; if not, executing the tenth step;
the ninth step: the controller controls the current rotating speed V of the engine to be V1(1+ k (Q1-Q)/Q), and the fifth step is executed;
the tenth step: the controller judges whether the current flow Q meets the condition that Q is larger than Q1+ Qa, if so, the next step is executed; if not, executing the fifth step;
the eleventh step: the controller controls the current rotating speed V of the engine to be V1(1-k (Q-Q1)/Q) and executes the fifth step;
the twelfth step: the controller adjusts the rotating speed of the engine to be V2 and executes the next step;
the thirteenth step: the controller judges whether the current flow Q is within the deviation, and judges whether Q2-Qb < Q < Q2+ Qb is satisfied: if yes, executing the next step; if not, executing the sixteenth step:
the fourteenth step is that: judging whether the corresponding engine rotating speed V under the current flow Q is within the deviation, judging whether | V-V2| < Vb is established, if so, executing the next step, and if not, executing the second step;
the fifteenth step: assigning the rotating speed value of V to V2, storing the value for next judgment, and executing the second step;
sixteenth, step: the controller judges whether the current flow Q meets Q < Q2-Qb, if yes, the next step is executed; if not, executing the eighteenth step;
seventeenth step: the controller controls the current rotating speed V of the engine to be V2(1+ k (Q2-Q)/Q) and executes the thirteenth step;
and eighteenth step: the controller judges whether the current flow Q meets the condition that Q is larger than Q2+ Qb, if so, the next step is executed; if not, executing the thirteenth step;
the nineteenth step: the controller controls the current rotating speed V of the engine to be V2(1-k (Q-Q2)/Q) and executes the thirteenth step;
the twentieth step: and (6) ending.
Wherein, the parameters to be collected are as follows: the velocity value V of the velocity sensor and the flow rate value Q of the flowmeter. The parameters to be set are: a half flow rate set value Q1, a full flow rate set value Q2, an allowable deviation set value Qa of the current flow rate from the half flow rate, an allowable deviation set value Qb of the current flow rate from the full flow rate, an initial engine speed set value V1 when the half flow rate function is turned on, an initial engine speed set value V2 when the full flow rate function is turned on, an allowable deviation set value Va of the initial engine speed set value V1 when the current speed rate is from the half flow rate function, an allowable deviation set value Vb of the initial engine speed set value V1 when the current speed rate is from the full flow rate function, and a rate set value k.
Based on any embodiment, fig. 4 is a schematic structural diagram of a flow control device provided by the present invention, as shown in fig. 4, the device includes:
the acquiring unit 410 is used for acquiring the current working mode of the speed-regulating fire pump and the real-time outlet flow;
and the control unit 420 is configured to adjust the real-time rotation speed of the speed-adjusting fire pump based on the set outlet flow, the set adjustment coefficient, and the real-time outlet flow in the current working mode if the real-time outlet flow does not satisfy the set flow control condition in the current working mode.
The flow control device provided by the embodiment of the invention obtains the current working mode of the speed-regulating fire pump and the real-time outlet flow; if the real-time outlet flow does not satisfy the set flow control condition in the current working mode, then based on the set outlet flow in the current working mode, set adjustment coefficient and real-time outlet flow, adjust the real-time rotating speed of the speed-adjusting fire pump, because the real-time outlet flow of the speed-adjusting fire pump is utilized as feedback to control the real-time rotating speed, the quick and accurate control of the outlet flow of the speed-adjusting fire pump is realized, the device is suitable for each working mode of the speed-adjusting fire pump, the flow control effect is improved, meanwhile, the use of fire extinguishing agents is saved by accurate flow control, and the fire extinguishing cost is reduced.
Based on any of the above embodiments, the control unit 420 is specifically configured to:
determining a rotation speed gain coefficient based on the set outlet flow, the set adjustment coefficient and the real-time outlet flow in the current working mode;
and adjusting the real-time rotating speed of the speed-adjusting fire pump based on the rotating speed gain coefficient.
Based on any of the above embodiments, the set flow control condition is that the real-time outlet flow is within a numerical range determined by the set outlet flow and the set flow deviation in the current working mode.
Based on any of the above embodiments, the apparatus further comprises:
the first rotating speed initial value determining unit is used for taking the real-time rotating speed as the rotating speed initial value of the speed-regulating fire pump in the current working mode if the real-time outlet flow meets the set flow control condition and the real-time rotating speed meets the set rotating speed control condition;
the set rotating speed control condition is that the real-time rotating speed is within a numerical range determined by the target rotating speed corresponding to the set outlet flow and the set rotating speed deviation in the current working mode.
Based on any one of the above embodiments, the initial value of the rotation speed of the speed-regulating fire pump is determined based on the target rotation speed corresponding to the set outlet flow in the current working mode.
Based on any embodiment of the foregoing, the apparatus further includes a second initial rotation speed value determining unit, where the second initial rotation speed value determining unit includes:
the state acquisition subunit is used for acquiring the valve state of a fire monitor arranged at the outlet of the speed-regulating fire pump;
and the rotation speed initial value determining subunit is used for determining the rotation speed initial value of the speed-regulating fire pump based on the valve state and the current working mode of the speed-regulating fire pump.
Based on any embodiment, the rotation speed initial value determining subunit is further configured to:
and if the valve is closed, setting the initial rotation speed value of the speed-regulating fire pump as an idle rotation speed value.
Based on any one of the above embodiments, the embodiment of the present invention further provides a fire fighting truck, where the fire fighting truck includes a controller, and the controller executes the steps of the flow control method in the above embodiment.
Specifically, the fire fighting truck includes a speed-adjustable fire pump, which may be a fast-speed-adjustable truck or a main-force foam truck, and the embodiment of the present invention is not particularly limited thereto.
Based on any of the above embodiments, fig. 5 is a schematic structural diagram of an electronic device provided by the present invention, and as shown in fig. 5, the electronic device may include: a Processor (Processor)510, a communication Interface (Communications Interface)520, a Memory (Memory)530, and a communication Bus (Communications Bus)540, wherein the Processor 510, the communication Interface 520, and the Memory 530 communicate with each other via the communication Bus 540. Processor 510 may call logical commands in memory 530 to perform the following method:
acquiring a current working mode and a real-time outlet flow of the speed-regulating fire pump; and if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode.
In addition, the logic commands in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic commands are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of commands for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The processor in the electronic device provided in the embodiment of the present invention may call a logic instruction in the memory to implement the method, and the specific implementation manner of the method is consistent with the implementation manner of the method, and the same beneficial effects may be achieved, which is not described herein again.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, for example, the method includes:
acquiring a current working mode and a real-time outlet flow of the speed-regulating fire pump; and if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode.
When the computer program stored on the non-transitory computer readable storage medium provided in the embodiments of the present invention is executed, the method is implemented, and the specific implementation manner of the method is consistent with the implementation manner of the method, and the same beneficial effects can be achieved, which is not described herein again.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several commands for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of flow control, comprising:
acquiring a current working mode and a real-time outlet flow of the speed-regulating fire pump;
and if the real-time outlet flow does not meet the set flow control condition in the current working mode, adjusting the real-time rotating speed of the speed-adjusting fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode.
2. The flow control method according to claim 1, wherein the set flow control condition is that the real-time outlet flow is within a range of values determined by a set outlet flow and a set flow deviation in the current operation mode.
3. The flow control method according to claim 1, wherein the obtaining of the current operating mode of the variable speed fire pump and the real-time outlet flow further comprises:
if the real-time outlet flow meets a set flow control condition and the real-time rotating speed meets a set rotating speed control condition, taking the real-time rotating speed as an initial rotating speed value of the speed-regulating fire pump in the current working mode;
the set rotating speed control condition is that the real-time rotating speed is within a numerical range determined by a target rotating speed corresponding to the set outlet flow and a set rotating speed deviation in the current working mode.
4. The flow control method according to any one of claims 1 to 2, wherein the initial value of the rotation speed of the governor fire pump is determined based on a target rotation speed corresponding to the set outlet flow in the current operation mode.
5. The flow control method according to claim 4, wherein the method for determining the initial value of the rotation speed comprises:
acquiring the valve state of a fire monitor arranged at the outlet of a speed-regulating fire pump;
and determining the initial rotating speed value of the speed-regulating fire pump based on the valve state and the current working mode of the speed-regulating fire pump.
6. The flow control method of claim 5, wherein determining an initial value for the speed regulated fire pump based on the valve status and the current operating mode of the speed regulated fire pump comprises:
and if the valve is closed, setting the initial rotating speed value of the speed-regulating fire pump as an idle rotating speed value.
7. A flow control device, comprising:
the acquiring unit is used for acquiring the current working mode of the speed-regulating fire pump and the real-time outlet flow;
and the control unit is used for adjusting the real-time rotating speed of the speed-regulating fire pump based on the set outlet flow, the set adjusting coefficient and the real-time outlet flow in the current working mode if the real-time outlet flow does not meet the set flow control condition in the current working mode.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the flow control method according to any one of claims 1 to 6 are implemented when the program is executed by the processor.
9. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the flow control method according to any one of claims 1 to 6.
10. A fire fighting vehicle, characterized in that it comprises a controller which performs the steps of the flow control method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220319.5A CN114949712B (en) | 2021-02-26 | 2021-02-26 | Flow control method and device and fire truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220319.5A CN114949712B (en) | 2021-02-26 | 2021-02-26 | Flow control method and device and fire truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114949712A true CN114949712A (en) | 2022-08-30 |
| CN114949712B CN114949712B (en) | 2023-06-20 |
Family
ID=82973083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110220319.5A Active CN114949712B (en) | 2021-02-26 | 2021-02-26 | Flow control method and device and fire truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114949712B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19745143C1 (en) * | 1997-10-14 | 1999-03-25 | Cn Fernwaermetechnik Gmbh | Flow regulation method for central heating circulation pump |
| CN201705638U (en) * | 2010-03-04 | 2011-01-12 | 公安部上海消防研究所 | Fire fighting pump constant-pressure speed regulating control device for fire fighting truck |
| CN102078671A (en) * | 2011-02-15 | 2011-06-01 | 顾元胜 | Method and device for rapidly adjusting water yield and effluent pressure of hydraulic monitor of fire engine |
| CN201906385U (en) * | 2010-12-25 | 2011-07-27 | 莱芜科泰电力科技有限公司 | Foam spray fire extinguishing device |
| CN105749449A (en) * | 2016-04-05 | 2016-07-13 | 公安部天津消防研究所 | Funnel fire extinguishing system and fire extinguishing method |
| CN206730346U (en) * | 2017-05-26 | 2017-12-12 | 长沙中联消防机械有限公司 | A kind of fire water monitor intelligent fire fighting control device and the fire fighting truck comprising the device |
| CN111306030A (en) * | 2020-03-05 | 2020-06-19 | 昌微系统科技(上海)有限公司 | Liquid path flow control system and control method |
| CN112337028A (en) * | 2020-10-22 | 2021-02-09 | 南京德沃克自动化有限公司 | Fire monitor control method and system, fire monitor and fire truck |
-
2021
- 2021-02-26 CN CN202110220319.5A patent/CN114949712B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19745143C1 (en) * | 1997-10-14 | 1999-03-25 | Cn Fernwaermetechnik Gmbh | Flow regulation method for central heating circulation pump |
| CN201705638U (en) * | 2010-03-04 | 2011-01-12 | 公安部上海消防研究所 | Fire fighting pump constant-pressure speed regulating control device for fire fighting truck |
| CN201906385U (en) * | 2010-12-25 | 2011-07-27 | 莱芜科泰电力科技有限公司 | Foam spray fire extinguishing device |
| CN102078671A (en) * | 2011-02-15 | 2011-06-01 | 顾元胜 | Method and device for rapidly adjusting water yield and effluent pressure of hydraulic monitor of fire engine |
| CN105749449A (en) * | 2016-04-05 | 2016-07-13 | 公安部天津消防研究所 | Funnel fire extinguishing system and fire extinguishing method |
| CN206730346U (en) * | 2017-05-26 | 2017-12-12 | 长沙中联消防机械有限公司 | A kind of fire water monitor intelligent fire fighting control device and the fire fighting truck comprising the device |
| CN111306030A (en) * | 2020-03-05 | 2020-06-19 | 昌微系统科技(上海)有限公司 | Liquid path flow control system and control method |
| CN112337028A (en) * | 2020-10-22 | 2021-02-09 | 南京德沃克自动化有限公司 | Fire monitor control method and system, fire monitor and fire truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114949712B (en) | 2023-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11135461B2 (en) | Fire suppression system component integration | |
| CA3068579C (en) | Mobile fire extinguishing apparatus with pressurized foam generation | |
| US20110030385A1 (en) | propulsion unit | |
| JPS6050971B2 (en) | Control device for variable pitch fan propulsion machine | |
| CN1093780A (en) | Compressed air foam pump apparatus | |
| CN109821168B (en) | Variable-flow foam mixing and supplying system and fire fighting truck | |
| CN105156272A (en) | Wind generator set turbulence wind condition control method | |
| CN109758686B (en) | Recoilless fire extinguishing agent spraying device for high-rise fire extinguishing rotor unmanned aerial vehicle | |
| CN114259676B (en) | Fire engine, fire water spraying system and control method thereof | |
| CN114949712A (en) | Flow control method and device and fire fighting truck | |
| CN204395289U (en) | A kind of fire fighting truck and pressure adaptive control system thereof | |
| CN110420423B (en) | Sand throwing fire extinguishing vehicle and control method thereof | |
| WO2023115821A1 (en) | Fire fighting truck, fire fighting sprinkler system and control method therefor | |
| CN110327575A (en) | The control method and system of fire monitor, fire fighting truck and computer readable storage medium | |
| RU2006131222A (en) | METHOD FOR INCREASING HELICOPTER FLIGHT SAFETY (OPTIONS) | |
| CN110721426A (en) | Marine constant-pressure fire extinguishing system | |
| CN113457050A (en) | Variable-attitude constant-pressure control method, device and system for boom water cannon and fire fighting truck | |
| RU2663399C1 (en) | Mobile fire extinguishing plant with foam generation using the compression method | |
| CN110665152B (en) | Control method of sand-throwing fire-extinguishing train | |
| CN214260452U (en) | Multi-phase spraying combined fire extinguishing device | |
| CN206153013U (en) | High pressure water mist generator | |
| CN117631705A (en) | Water outlet control system and method of working machine and working machine | |
| CN112023311B (en) | Sand-throwing fire extinguishing device and sand-throwing fire extinguishing vehicle | |
| CN113457049A (en) | Variable-attitude constant-pressure control method, device and system for boom water cannon and fire fighting truck | |
| CA3078274C (en) | Method for creating a required pressure and fuel flow rate in a fuel system of a gas turbine engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |