CN114259676A - Fire fighting truck, fire fighting water injection system and control method thereof - Google Patents
Fire fighting truck, fire fighting water injection system and control method thereof Download PDFInfo
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- CN114259676A CN114259676A CN202111593253.0A CN202111593253A CN114259676A CN 114259676 A CN114259676 A CN 114259676A CN 202111593253 A CN202111593253 A CN 202111593253A CN 114259676 A CN114259676 A CN 114259676A
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Abstract
The invention provides a fire engine, a fire-fighting water injection system and a control method thereof, wherein the fire-fighting water injection system comprises: the system comprises a water pump, a fire monitor, a first regulating valve, a second regulating valve, a liquid supply device, a first flow sensor and a first pressure sensor; the liquid supply device is communicated with the fire monitor through a first liquid pipeline, and the water pump, the first regulating valve and the first flow sensor are sequentially arranged on the first liquid pipeline along the extension direction of the first liquid pipeline; the second governing valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first governing valve, the first pressure sensor is arranged at the downstream of the second governing valve, and the other end of the second liquid pipeline is used for being connected with a water consumption device. The fire-fighting water injection system has four working modes, namely a constant-pressure mode, a constant-flow mode, a three-dimensional mode and a direct-control mode, and can adapt to various different working conditions compared with the existing fire-fighting equipment.
Description
Technical Field
The invention relates to the technical field of fire extinguishing equipment, in particular to a fire fighting truck, a fire fighting sprinkler system and a control method of the fire fighting truck and the fire fighting sprinkler system.
Background
In recent years, natural disasters and emergencies in China are more and more, and fire fighting equipment for emergency rescue and relief work is more and more concerned; in the process of fire fighting and people saving, fire fighters are required to accurately control the fire fighting equipment in the shortest time, so that the fire fighting equipment can fully exert the performance of the fire fighting equipment to achieve the purpose of people saving and people saving.
In the fire fighting work, the fire fighting equipment needs to be quickly and accurately displaced so that the fire fighting equipment can be put into the fire fighting work as soon as possible, but the existing fire fighting equipment is incomplete in function and is not beneficial to quickly unfolding and smoothly carrying out the fire fighting work.
Disclosure of Invention
The invention provides a fire engine, a fire-fighting water injection system and a control method thereof, which are used for solving the problem of incomplete functions of fire-fighting equipment in the prior art.
In a first aspect, the present invention provides a fire sprinkler system, comprising: the system comprises a water pump, a fire monitor, a first regulating valve, a second regulating valve, a liquid supply device, a first flow sensor and a first pressure sensor;
the liquid supply device is communicated with the fire monitor through a first liquid pipeline, and the water pump, the first regulating valve and the first flow sensor are sequentially arranged on the first liquid pipeline along the extension direction of the first liquid pipeline;
the second governing valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first governing valve, the first pressure sensor is arranged at the downstream of the second governing valve, and the other end of the second liquid pipeline is used for being connected with a water consumption device.
According to the fire fighting sprinkler system provided by the invention, the fire fighting sprinkler system further comprises a controller, and the first regulating valve, the second regulating valve, the first flow sensor, the first pressure sensor and the water pump are all connected with the controller;
the controller controls the rotation speed of the water pump and the opening degree of the first regulating valve according to the flow value of the first flow sensor so that the flow value of the first flow sensor is equal to a target flow value when the controller controls the first regulating valve to be opened;
or, in the case that the controller controls the second regulating valve to be opened, the controller controls the rotation speed of the water pump and the opening of the second regulating valve according to the pressure value of the first pressure sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value;
or, under the condition that the controller controls the first regulating valve and the second regulating valve to be opened, the controller controls the rotation speed of the water pump, the opening degree of the first regulating valve and the opening degree of the second regulating valve according to the pressure value of the first pressure sensor and the flow value of the first flow sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value, and the flow value of the first flow sensor is equal to a target flow value.
According to the fire fighting sprinkler system provided by the invention, the fire fighting sprinkler system further comprises a human-computer interaction device, the human-computer interaction device is connected with the controller, the human-computer interaction device is used for receiving the target flow value, the target pressure value, a first input instruction for controlling the water pump, a second input instruction for controlling the first regulating valve and a third input instruction for controlling the second regulating valve, and the controller generates corresponding control instructions according to the first input instruction, the second input instruction and the third input instruction.
According to the fire-fighting water injection system provided by the invention, the fire-fighting water injection system further comprises a second pressure sensor, the second pressure sensor is arranged on a third liquid pipeline, one end of the third liquid pipeline is connected with the liquid supply device, and the other end of the third liquid pipeline is connected between the water pump and the second regulating valve.
According to the fire-fighting water injection system provided by the invention, the fire-fighting water injection system further comprises a valve body, and the valve body is arranged between the second pressure sensor and the liquid supply device.
In a second aspect, the present invention provides a fire fighting vehicle comprising: the fire-fighting water injection system is arranged on the vehicle body.
In a third aspect, the present invention provides a method for controlling a fire sprinkler system, including:
controlling the first regulating valve to be opened and the second regulating valve to be closed, and acquiring the rotating speed of the water pump, the opening of the first regulating valve and the flow value of the first flow sensor;
according to the flow value of the first flow sensor, the rotating speed of the water pump and the opening degree of the first regulating valve are regulated, so that the flow value of the first flow sensor is equal to a target flow value;
or controlling the first regulating valve to be closed and the second regulating valve to be opened, and acquiring the rotating speed of the water pump, the opening degree of the second regulating valve and the pressure value of the first pressure sensor;
according to the pressure value of the first pressure sensor, the rotating speed of the water pump and the opening degree of the second regulating valve are regulated, so that the pressure value of the first pressure sensor is equal to a target pressure value;
or controlling the first regulating valve and the second regulating valve to be opened, and acquiring the rotating speed of the water pump, the opening degree of the first regulating valve, the opening degree of the second regulating valve, the pressure value of the first pressure sensor and the flow value of the first flow sensor;
and controlling the rotating speed of the water pump, the opening degree of the first regulating valve and the opening degree of the second regulating valve according to the pressure value of the first pressure sensor and the flow value of the first flow sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value, and the flow value of the first flow sensor is equal to a target flow value.
The control method of the fire-fighting water injection system further comprises the following steps:
determining that the first flow sensor and the first regulator valve are in a failure state when the first regulator valve is open and the second regulator valve is closed; controlling the rotating speed of the water pump to adjust the water outlet flow of the fire monitor;
or, when the second regulating valve is opened and the first regulating valve is closed, determining that the first pressure sensor and the second regulating valve are in a failure state; and controlling the rotating speed of the water pump to adjust the water outlet pressure at the second adjusting valve.
The control method of the fire-fighting water injection system further comprises the following steps:
and under the condition that the first regulating valve and the second regulating valve are both opened, determining that the rotating speed of the water pump is equal to a target rotating speed and/or the water level of a liquid supply device is equal to a target water level, and controlling the opening degree of the first regulating valve so that the flow value of the first flow sensor is smaller than a target flow value, or controlling the opening degree of the second regulating valve so that the flow value of the first pressure sensor is smaller than a target pressure value.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the control method of the fire sprinkler system according to any one of the above.
The fire fighting truck, the fire fighting water injection system and the control method thereof have four working modes, namely a constant pressure mode, a constant flow mode, a three-dimensional mode and a direct control mode, and can adapt to various different working conditions compared with the conventional fire fighting equipment, wherein the constant flow mode can stabilize the injection flow of the fire fighting truck, is favorable for the stability of the whole water supply and water injection chain and is favorable for reducing the burden of an operator lifting the truck; the constant pressure mode can ensure that the safety of operators is not influenced by excessive reaction force when the water using device, such as a water spraying gun, is used; the direct control mode can directly control the engine under the condition that a system sensor and a regulating valve have faults, so that the possibility of continuous safe operation is ensured to a certain extent, and the reliability of the system is improved; the three-dimensional mode can put out a fire in all-round, promotes fire extinguishing efficiency.
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 block diagram of a fire sprinkler system provided by the present invention;
FIG. 2 is a schematic flow chart illustrating a method for controlling a fire sprinkler system according to the present invention;
reference numerals:
1: a liquid supply device; 2: a water pump; 3: a first regulating valve;
4: a second regulating valve; 5: a first flow sensor; 6: a first pressure sensor;
7: fire monitor; 8: a second pressure sensor; 9: a first valve body;
10: a safety valve; 11: a second flow sensor; 12: a check valve;
13: a first infusion port; 14: a second valve body; 15: a second infusion port.
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.
As shown in fig. 1, the fire sprinkler system according to the embodiment of the present invention includes: the device comprises a water pump 2, a fire monitor 7, a first regulating valve 3, a second regulating valve 4, a liquid supply device 1, a first flow sensor 5 and a first pressure sensor 6.
The liquid supply device 1 is used for storing liquid, the liquid supply device 1 is communicated with the fire monitor 7 through a first liquid pipeline, and the water pump 2, the first regulating valve 3 and the first flow sensor 5 are sequentially arranged on the first liquid pipeline along the conveying direction of the liquid. That is, the first flow sensor 5 is located downstream of the first regulator valve 3.
Wherein, the aperture of first governing valve 3 can be adjusted according to actual demand.
The second governing valve 4 is located the second liquid pipeline, and the one end of second liquid pipeline is connected between water pump 2 and first governing valve 3, and first pressure sensor 6 locates the low reaches of second governing valve 4, and the other end of second liquid pipeline is used for connecting water consuming unit.
Wherein, the aperture of the second regulating valve 4 can be adjusted according to the actual requirement. The water-using device may be a water gun, and the specific type thereof is not particularly limited herein.
The fire-fighting sprinkler system provided by the embodiment of the invention has a constant-pressure mode, a constant-current mode, a three-dimensional mode and a direct-control mode.
Specifically, only the fire monitor 7 is in an operating state, and the constant-flow mode is used, that is, the flow rate value of the first flow sensor 5 is made equal to the target flow rate value by controlling the rotation speed of the water pump 2 and the opening degree of the first regulating valve 3 with the first regulating valve 3 opened and the second regulating valve 4 closed. The purpose of controlling the rotation speed of the water pump 2 is to prevent the pressure build-up phenomenon caused by too fast rotation speed of the water pump 2 when the opening of the first regulating valve 3 is reduced, and further to prevent the damage of the structure of the water pump 2.
For example, in the case where the flow rate value of the first flow sensor 5 is smaller than the target flow rate value, the rotation speed of the water pump 2 is controlled to increase, and the opening degree of the first regulating valve 3 is increased until the flow rate value of the first flow sensor 5 becomes equal to the target flow rate value. In the case where the flow rate value of the first flow sensor 5 is greater than the target flow rate value, the rotation speed of the water pump 2 is controlled to be reduced, and the opening degree of the first regulating valve 3 is reduced until the flow rate value of the first flow sensor 5 is equal to the target flow rate value. The target flow rate value may be a specific value or a range of values, which is selected according to actual requirements and is not limited herein.
It should be particularly noted that when the first regulating valve 3 is opened, the second regulating valve 4 is closed, and it is determined that the first flow sensor 5 and the first regulating valve 3 are in the failure state, that is, the flow value in the first pipeline cannot be obtained at this time, the opening degree of the first regulating valve 3 is a fixed value, at this time, the water blowout prevention system can use a direct control mode, and in the direct control mode, the man-machine interaction module is used for directly controlling the rotating speed of the water pump 2 to adjust the water outlet flow of the fire monitor 7.
When only the water gun is in the working state, the constant pressure mode is used, that is, under the condition that the first regulating valve 3 is closed and the second regulating valve 4 is opened, the rotating speed of the water pump 2 and the opening degree of the second regulating valve 4 are controlled, so that the pressure value of the first pressure sensor 6 is equal to the target pressure value.
For example, in the case where the pressure value of the first pressure sensor 6 is smaller than the target pressure value, the rotation speed of the water pump 2 is controlled to increase, and the opening degree of the second regulating valve 4 is increased until the pressure value of the first pressure sensor 6 is equal to the target pressure value. And under the condition that the pressure value of the first pressure sensor 6 is greater than the target pressure value, controlling the rotating speed of the water pump 2 to be reduced, and reducing the opening degree of the second regulating valve 4 until the pressure value of the first pressure sensor 6 is equal to the target pressure value. The target pressure value may be a specific value or a range of values, which is selected according to actual requirements and is not limited herein.
It should be particularly noted that, when the second regulating valve 4 is opened, the first regulating valve 3 is closed, and it is determined that the first pressure sensor 6 and the second regulating valve 4 are in the failure state, that is, the pressure value in the second pipeline cannot be obtained at this time, the opening degree of the second regulating valve 4 is a fixed value, at this time, the water blowout prevention system may use a direct control mode, and in the direct control mode, the man-machine interaction module is used to directly control the rotation speed of the water pump 2 to adjust the water outlet pressure at the second regulating valve 4.
When the fire monitor 7 and the water gun are both in working states, a three-dimensional mode is used, that is, under the condition that the first regulating valve 3 and the second regulating valve 4 are both opened, the pressure value of the first pressure sensor 6 is equal to a target pressure value and the flow value of the first flow sensor 5 is equal to a target flow value by controlling the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4.
For example, in the case where the pressure value of the first pressure sensor 6 is smaller than the target pressure value and the flow value of the first flow sensor 5 is smaller than the target flow value, the rotation speed of the water pump 2 is controlled to increase, the opening degree of the first regulating valve 3 is increased, and the opening degree of the second regulating valve 4 is increased until the pressure value of the first pressure sensor 6 is equal to the target pressure value and the flow value of the first flow sensor 5 is equal to the target flow value.
When the pressure value of the first pressure sensor 6 is smaller than the target pressure value and the flow value of the first flow sensor 5 is larger than the target flow value, the rotating speed of the water pump 2 is controlled to be unchanged, the opening degree of the first regulating valve 3 is reduced, the opening degree of the second regulating valve 4 is increased until the pressure value of the first pressure sensor 6 is equal to the target pressure value, and the flow value of the first flow sensor 5 is equal to the target flow value.
It should be particularly noted that under the condition that the first regulating valve 3 and the second regulating valve 4 are both opened, and it is determined that the first pressure sensor 6, the first flow sensor 5, the first regulating valve 3 and the second regulating valve 4 are all in the failure state, that is, the flow value in the first pipeline cannot be obtained at this time, the pressure value in the second pipeline, and the opening degrees of the first regulating valve 3 and the second regulating valve 4 are both fixed values, at this time, the water blowout prevention system can use a direct control mode, and in the direct control mode, the man-machine interaction module is used for directly controlling the rotating speed of the water pump 2 so as to adjust the water outlet flow of the fire monitor 7 and the water outlet pressure at the second regulating valve 4.
The fire-fighting water injection system provided by the embodiment of the invention has four working modes, namely a constant-pressure mode, a constant-flow mode, a three-dimensional mode and a direct-control mode, and can adapt to various different working conditions compared with the existing fire-fighting equipment, wherein the constant-flow mode can stabilize the injection flow of a fire fighting truck, is favorable for the stability of the whole water supply and water injection chain and is favorable for reducing the burden of an operator lifting the high truck; the constant pressure mode can ensure that the safety of operators is not influenced by excessive reaction force when the water using device, such as a water spraying gun, is used; the direct control mode can directly control the engine under the condition that a system sensor and a regulating valve have faults, so that the possibility of continuous safe operation is ensured to a certain extent, and the reliability of the system is improved; the three-dimensional mode can put out a fire in all-round, promotes fire extinguishing efficiency.
In an optional embodiment, the fire sprinkler system further comprises a controller, and the first regulating valve 3, the second regulating valve 4, the first flow sensor 5, the first pressure sensor 6 and the water pump 2 are all connected with the controller.
That is, the controller may control the opening degree of the first regulating valve 3, the opening degree of the second regulating valve 4, may adjust the rotation speed of the water pump 2, and may receive the flow rate value of the first flow sensor 5 and the pressure value of the first pressure sensor 6.
When the constant-flow mode is adopted, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be closed, and the controller controls the rotating speed of the water pump 2 and the opening of the first regulating valve 3 until the flow value of the first flow sensor 5 is equal to the target flow value according to the flow value of the first flow sensor 5.
When the constant pressure mode is adopted, the controller controls the second regulating valve 4 to be opened, the first regulating valve 3 to be closed, and the controller controls the rotating speed of the water pump 2 and the opening degree of the second regulating valve 4 until the pressure value of the first pressure sensor 6 is equal to the target pressure value according to the pressure value of the first pressure sensor 6.
When the three-dimensional mode is adopted, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be opened, the controller controls the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4 according to the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5 until the pressure value of the first pressure sensor 6 is equal to the target pressure value, and the flow value of the first flow sensor 5 is equal to the target flow value.
When the constant-flow mode is adopted, the controller determines that the first flow sensor 5 and the first regulating valve 3 are in a failure state, and at the moment, the blowout prevention system can use a direct control mode.
In the constant pressure mode, the controller determines that the first pressure sensor 6 and the second regulator valve 4 are in the failure state, and the direct control mode can be used for the blowout prevention system.
In an alternative embodiment, the controller may obtain the open or closed states of the first regulating valve 3 and the second regulating valve 4, may adjust the rotation speed of the water pump 2, and may receive the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5.
When the controller determines that the first regulating valve 3 is opened and the second regulating valve 4 is closed, the system enters a constant flow mode, and the controller controls the rotating speed of the water pump 2 and the opening of the first regulating valve 3 until the flow value of the first flow sensor 5 is equal to the target flow value.
And the controller determines that the second regulating valve 4 is opened, when the first regulating valve 3 is closed, the system enters a constant pressure mode, and the controller controls the rotating speed of the water pump 2 and the opening of the second regulating valve 4 until the pressure value of the first pressure sensor 6 is equal to the target pressure value.
When the controller determines that the first regulating valve 3 is opened and the second regulating valve 4 is opened, the system enters a three-dimensional mode, the controller controls the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4 until the flow value of the first flow sensor 5 is equal to a target flow value, and the pressure value of the first pressure sensor 6 is equal to a target pressure value.
For example, in the process of putting out a fire, the hydraulic giant has been opened at the end as required to the operation hand when using the fire monitor during operation, and at this moment, system automatic identification is the stereomode to the pressure of control hydraulic giant avoids the risk of too high pressure.
The controller determines that the direct control mode is entered in the case where the first regulating valve 3 is opened, the second regulating valve 4 is closed, and the first flow sensor 5 and the first regulating valve 3 are in the failure state.
The controller determines that the direct control mode is entered in the case where the first regulating valve 3 is closed, the second regulating valve 4 is opened, and it is determined that the first pressure sensor 6 and the second regulating valve 4 are in the failure state.
In the direct control mode, the man-machine interaction module is used for directly controlling the rotating speed of the water pump 2 so as to adjust the water outlet flow of the fire monitor 7 or the water outlet pressure of the second adjusting valve 4.
Through automatic identification constant current, constant voltage, three-dimensional, directly control the mode, can reduce equipment operating pressure, and when the maloperation appears, for example large-traffic but when big gun outlet valve closed, there is huge safe risk with the operating personnel of water installation, and automatic identification becomes the constant voltage mode, can reduce safe risk.
In an optional embodiment, the fire fighting sprinkler system further includes a human-computer interaction device, the human-computer interaction device is connected with the controller, the human-computer interaction device is used for receiving the target flow value, the target pressure value, the first input instruction for controlling the water pump 2, the second input instruction for controlling the first regulating valve 3, and the third input instruction for controlling the second regulating valve 4, and the controller generates corresponding control instructions according to the first input instruction, the second input instruction, and the third input instruction.
That is to say, man-machine interaction device includes the touch-sensitive screen, is provided with the speed governing button of water pump 2 on the touch-sensitive screen, and through clicking the speed governing button, the corresponding adjustment can take place for the rotational speed of water pump 2. The touch screen is provided with a first opening button of the first adjusting valve 3, corresponding adjustment can be carried out on the opening of the first adjusting valve 3 by clicking the first opening button, the touch screen is provided with a second opening button of the second adjusting valve 4, and corresponding adjustment can be carried out on the opening of the second adjusting valve 4 by clicking the second opening button. The man-machine interaction device can also display the rotating speed of the water pump 2, the opening degree of the first regulating valve 3, the opening degree of the second regulating valve 4, the pressure value of the first pressure sensor 6, the flow value of the first flow sensor 5, the target flow value and the target pressure value.
For example, when the constant-flow mode is adopted, a start button on the touch screen is clicked, the constant-flow mode is selected, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be closed, the speed regulating button is continuously clicked, the target flow value is adjusted, and the controller controls the opening degree of the first regulating valve 3 and the rotating speed of the water pump 2 until the flow value of the first flow sensor 5 is equal to the target flow value.
And under the constant pressure mode, clicking a starting button on the touch screen, selecting the constant pressure mode, controlling the second regulating valve 4 to be opened by the controller, closing the first regulating valve 3, continuously clicking a speed regulating button, regulating a target pressure value, and controlling the rotating speed of the water pump 2 and the opening degree of the second regulating valve 4 by the controller until the pressure value of the first pressure sensor 6 is equal to the target pressure value.
And in the three-dimensional mode, clicking a start button on the touch screen, selecting the three-dimensional mode, controlling the first regulating valve 3 to be opened by the controller, controlling the second regulating valve 4 to be opened by the controller, continuously clicking a speed regulating button, regulating a target flow value and a target pressure value, and controlling the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4 by the controller until the flow value of the first flow sensor 5 is equal to the target flow value and the pressure value of the first pressure sensor 6 is equal to the target pressure value.
And in the direct control mode, a starting button on the touch screen is clicked, the direct control mode is selected, the speed regulating button is continuously clicked, and the controller controls the rotating speed of the water pump 2 so as to regulate the water outlet flow of the fire monitor 7 and/or the water outlet pressure of the second regulating valve 4.
In an alternative embodiment, the human-computer interaction device comprises a knob device, and the target flow value and the target pressure value can be adjusted through the knob device, and the engine speed can also be adjusted through the knob device.
For example, in the constant flow mode recognized by the system, the controller automatically generates an adjustment control command for the target flow value according to the input command of the knob device, and the controller controls the rotation speed of the water pump 2 and the opening degree of the first regulating valve 3 so that the flow value of the first flow sensor 5 is equal to the new target flow value.
For example, in the constant pressure mode recognized by the system, the controller automatically generates an adjustment control command for the target pressure value according to the input command of the knob device, and the controller controls the rotation speed of the water pump 2 and the opening degree of the second regulating valve 4 so that the pressure value of the first pressure sensor 6 is equal to the new target pressure value.
For example, in the stereoscopic mode recognized by the system, the controller automatically generates an adjustment control command for the target pressure value and the target flow rate value according to the input command of the knob device, and the controller controls the rotation speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4 so that the pressure value of the first pressure sensor 6 is equal to the new target pressure value and the flow rate value of the first flow rate sensor 5 is equal to the new target flow rate value.
For example, in the direct control mode, the controller automatically generates an adjustment control command for a target engine speed value according to an input command of the knob device, and controls the increase or decrease of the engine speed.
In an optional embodiment, the fire fighting sprinkler system further comprises a second pressure sensor 8, the second pressure sensor 8 is disposed on a third liquid pipeline, one end of the third liquid pipeline is connected with the liquid supply device 1, and the other end of the third liquid pipeline is connected between the water pump 2 and the second regulating valve 4.
Note that the pressure value downstream of the water pump 2 can be acquired by arranging the second pressure sensor 8.
In an alternative embodiment, the fire sprinkler system further comprises a first valve body 9, the first valve body 9 being arranged between the second pressure sensor 8 and the liquid supply device 1.
The first valve body 9 has two states of opening and closing, and the opening degree cannot be adjusted. In the case that the pressure value of the second pressure sensor 8 is too large, the first valve body 9 is opened to make the liquid delivered by the water pump 2 flow back to the liquid supply device 1.
In an alternative embodiment, the fire sprinkler system further comprises a safety valve 10, the safety valve 10 being provided in the third liquid line, the safety valve 10 being provided upstream of the second pressure sensor 8.
The safety valve 10 can prevent the pressure value at the liquid outlet end of the water pump 2 from being too large.
In an alternative embodiment, the fire fighting injection system further comprises a check valve 12, the check valve 12 being provided between the other end of the second liquid line and the second regulating valve 4.
The check valve 12 prevents the first and second control valves 3 and 4 from damaging the structure of the water pump 2 by the backflow of the liquid remaining in the pipeline after closing.
In an alternative embodiment, the fire sprinkler system further comprises a second flow sensor 11, the second flow sensor 11 being arranged between the water pump 2 and the second regulating valve 4.
It should be noted that, in the constant pressure mode, the flow rate value at the second regulating valve 4 can be acquired by the second flow sensor 11.
In an optional embodiment, the fire-fighting water injection system further comprises a first infusion port 13, and the first infusion port 13 is connected with the liquid supply device 1.
That is, an external water source can be delivered into the liquid supply device 1 through the first liquid delivery port 13, so as to facilitate the continuous operation of the fire-fighting water injection system.
Or the fire-fighting water injection system further comprises a second infusion port 15, and the second infusion port 15 is arranged between the liquid supply device 1 and the water pump 2.
That is to say, fire sprinkler system has the reserve water source in addition, and reserve water source gets into first pipeline through second infusion mouth 15 this moment, and this reserve water source can directly be used to water pump 2.
Or, in order to ensure the stability of water use, the fire-fighting water injection system comprises the first transfusion port 13 and the second transfusion port 15 at the same time.
In an alternative embodiment, in case the fire fighting sprinkler system further comprises a second fluid port 15, the fire fighting sprinkler system further comprises a second valve 14, the second valve 14 being arranged between the liquid supply device 1 and the second fluid port 15.
The second valve body 14 has two states of opening and closing, and the opening degree cannot be adjusted.
It should be noted that, by arranging the second valve 14 between the liquid supply device 1 and the second infusion port 15, the fire-fighting sprinkler system can use two water sources at the same time when the second valve 14 is opened, and the fire-fighting sprinkler system uses a standby water source when the second valve 14 is closed.
In addition, the embodiment of the invention also provides a fire fighting truck, which comprises: automobile body and foretell fire control sprinkler system, fire control sprinkler system locate the automobile body.
According to the fire fighting truck disclosed by the embodiment of the invention, the constant-flow, constant-pressure, three-dimensional and direct-control modes are automatically identified, the operation pressure of equipment can be reduced, and when misoperation occurs, such as large flow but the first regulating valve 3 is closed, the operator of the water using device has huge safety risk, and the safety risk can be reduced by automatically identifying the constant-pressure mode.
In addition, as shown in fig. 2, the method for controlling a fire sprinkler system according to the embodiment of the present invention includes:
s100, controlling the first regulating valve 3 to be opened and the second regulating valve 4 to be closed, and acquiring the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the flow value of the first flow sensor 5;
the rotation speed of the water pump 2 and the opening degree of the first regulator valve 3 are adjusted based on the flow rate value of the first flow sensor 5 so that the flow rate value of the first flow sensor 5 is equal to the target flow rate value.
And under the constant-flow mode, a start button on the touch screen is clicked, the constant-flow mode is selected, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be closed, and the controller controls the rotating speed of the water pump 2 and the opening of the first regulating valve 3 according to the flow value of the first flow sensor 5 until the flow value of the first flow sensor 5 is equal to the target flow value.
Or controlling the first regulating valve 3 to be closed and the second regulating valve 4 to be opened, and acquiring the rotating speed of the water pump 2, the opening degree of the second regulating valve 4 and the pressure value of the first pressure sensor 6;
the rotation speed of the water pump 2 and the opening degree of the second regulating valve 4 are regulated based on the pressure value of the first pressure sensor 6 so that the pressure value of the first pressure sensor 6 is equal to the target pressure value.
And under the constant pressure mode, a starting button on the touch screen is clicked, the constant pressure mode is selected, the controller controls the second regulating valve 4 to be opened, the first regulating valve 3 is closed, and the controller controls the rotating speed of the water pump 2 and the opening degree of the second regulating valve 4 according to the pressure value of the first pressure sensor 6 until the pressure value of the first pressure sensor 6 is equal to the target pressure value.
Or controlling the first regulating valve 3 and the second regulating valve 4 to be opened, and acquiring the rotating speed of the water pump 2, the opening degree of the first regulating valve 3, the opening degree of the second regulating valve 4, the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5;
the rotation speed of the water pump 2, the opening degree of the first regulating valve 3, and the opening degree of the second regulating valve 4 are controlled so that the pressure value of the first pressure sensor 6 is equal to the target pressure value and the flow value of the first flow sensor 5 is equal to the target flow value, based on the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5.
And in the three-dimensional mode, a start button on the touch screen is clicked, the three-dimensional mode is selected, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be opened, the controller controls the rotating speed of the water pump 2, the opening degree of the first regulating valve 3 and the opening degree of the second regulating valve 4 according to the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5 until the flow value of the first flow sensor 5 is equal to a target flow value, and the pressure value of the first pressure sensor 6 is equal to the target pressure value.
The control method of the fire-fighting water injection system provided by the embodiment of the invention has four working modes, namely a constant-pressure mode, a constant-flow mode, a three-dimensional mode and a direct-control mode, and can adapt to various different working conditions compared with the existing fire-fighting equipment, wherein the constant-flow mode can stabilize the injection flow of a fire fighting truck, is beneficial to the stability of the whole water supply and water injection chain and the reduction of the burden of an operator of a lifting truck, and the constant-pressure mode can ensure that the safety of the operator cannot be influenced by an overhigh reaction force in the use process of a water using device, such as a water spraying gun; the direct control mode can directly control the engine under the condition that a system sensor and a regulating valve have faults, so that the possibility of continuous safe operation is ensured to a certain extent, and the reliability of the system is improved; the three-dimensional mode can put out a fire in all-round, promotes fire extinguishing efficiency.
In an optional embodiment, the method further comprises:
s101, determining that the first flow sensor 5 and the first regulating valve 3 are in a failure state under the condition that the first regulating valve 3 is opened and the second regulating valve 4 is closed; and controlling the rotating speed of the water pump 2 to adjust the water outlet flow of the fire monitor 7.
Under the constant-current mode, the controller can acquire the flow value of the first flow sensor 5 and adjust the opening of the first regulating valve 3, under the condition that the first flow sensor 5 is in a failure state, the controller cannot acquire the flow value of the first flow sensor 5 and cannot adjust the opening of the first regulating valve 3, at the moment, the fire-fighting sprinkler system is switched from the constant-current mode to the direct-control mode, and under the direct-control mode, the speed regulating button is continuously clicked, and the controller controls the rotating speed of the water pump 2 to adjust the water outlet flow of the fire monitor 7.
Or S102, under the condition that the second regulating valve 4 is opened and the first regulating valve 3 is closed, determining that the first pressure sensor 6 and the second regulating valve 4 are in a failure state; the rotation speed of the water pump 2 is controlled to adjust the outlet water pressure at the second regulating valve 4.
Under the constant voltage mode, the controller can acquire the pressure value of first pressure sensor 6, adjust the aperture of second governing valve 4, be in under the condition of failure state at first pressure sensor 6 and second governing valve 4, the controller can't acquire the pressure value of first pressure sensor 6, can't adjust the aperture of second governing valve 4, at this moment, fire control sprinkler system is switched to directly controlling the mode by the constant voltage mode, under directly controlling the mode, click the speed governing button in succession, the rotational speed of controller control water pump 2, in order to adjust the play water pressure of second governing valve 4.
Or S103, under the condition that the first regulating valve 3 and the second regulating valve 4 are both opened, determining that the first pressure sensor 6, the first flow sensor 5, the first regulating valve 3 and the second regulating valve 4 are all in a failure state, and controlling the rotating speed of the water pump 2 to regulate the water outlet flow of the fire monitor 7 and the water outlet pressure at the second regulating valve 4.
In the three-dimensional mode, the controller can acquire a flow value of the first flow sensor 5 and a pressure value of the first pressure sensor 6, and adjust the opening degrees of the first regulating valve 3 and the second regulating valve 4, and under the condition that the first pressure sensor 6, the first flow sensor 5, the first regulating valve 3 and the second regulating valve 4 are in a failure state, the controller cannot acquire the flow value of the first flow sensor 5 and the pressure value of the first pressure sensor 6 and cannot adjust the opening degrees of the first regulating valve 3 and the second regulating valve 4, at this time, the fire-fighting sprinkler system is switched from the three-dimensional mode to the direct control mode, and in the direct control mode, the speed regulating button is continuously clicked, and the controller controls the rotating speed of the water pump 2 to adjust the water outlet flow rate of the fire monitor 7 and the water outlet pressure at the second regulating valve 4.
In an optional embodiment, the method further comprises:
and S200, under the condition that the first regulating valve 3 and the second regulating valve 4 are both opened, determining that the rotating speed of the water pump 2 is equal to the target rotating speed and/or the water level of the liquid supply device 1 is equal to the target water level, and controlling the opening degree of the first regulating valve 3 so that the flow value of the first flow sensor 5 is smaller than the target flow value or controlling the opening degree of the second regulating valve 4 so that the flow value of the first pressure sensor 6 is smaller than the target pressure value.
Wherein, be equipped with level sensor in the confession liquid device 1, level sensor is connected with the controller.
The controller controls the first regulating valve 3 and the second regulating valve 4 to be opened, and in an initial state, the pressure value of the first pressure sensor 6 is equal to a target pressure value, and the flow value of the first flow sensor 5 is equal to a target flow value. In case it is determined that the rotational speed of the water pump 2 is equal to the target rotational speed and/or the water level of the liquid supply device 1 is equal to the target water level, the controller controls the decrease of the opening degree of the first regulating valve 3 such that the flow value of the first flow sensor 5 is smaller than the target flow value, at which time the flow value of the first pressure sensor 6 is equal to the target pressure value.
Or, the controller controls the first regulating valve 3 and the second regulating valve 4 to be opened, and in an initial state, the pressure value of the first pressure sensor 6 is equal to the target pressure value, and the flow value of the first flow sensor 5 is equal to the target flow value. In case it is determined that the rotation speed of the water pump 2 is equal to the target rotation speed and/or the water level of the liquid supply device 1 is equal to the target water level, the controller controls the reduction of the opening of the second regulating valve 4 such that the flow value of the first pressure sensor 6 is smaller than the target pressure value, at which time the flow value of the first flow sensor 5 is equal to the target flow value.
It should be noted that the target water level may be 20% of the maximum water level of the liquid supply apparatus 1. The target rotation speed may be the maximum rotation speed of the water pump 2.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, which when executed by a computer, the computer is capable of executing the control method of the fire sprinkler system provided by the above methods.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the control method of the fire sprinkler system provided in each of the above.
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.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but 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 fire protection sprinkler system, comprising: the system comprises a water pump, a fire monitor, a first regulating valve, a second regulating valve, a liquid supply device, a first flow sensor and a first pressure sensor;
the liquid supply device is communicated with the fire monitor through a first liquid pipeline, and the water pump, the first regulating valve and the first flow sensor are sequentially arranged on the first liquid pipeline along the extension direction of the first liquid pipeline;
the second governing valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first governing valve, the first pressure sensor is arranged at the downstream of the second governing valve, and the other end of the second liquid pipeline is used for being connected with a water consumption device.
2. The fire protection sprinkler system of claim 1, further comprising a controller, the first regulator valve, the second regulator valve, the first flow sensor, the first pressure sensor, and the water pump all being connected to the controller;
the controller controls the rotation speed of the water pump and the opening degree of the first regulating valve according to the flow value of the first flow sensor so that the flow value of the first flow sensor is equal to a target flow value when the controller controls the first regulating valve to be opened;
or, in the case that the controller controls the second regulating valve to be opened, the controller controls the rotation speed of the water pump and the opening of the second regulating valve according to the pressure value of the first pressure sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value;
or, under the condition that the controller controls the first regulating valve and the second regulating valve to be opened, the controller controls the rotation speed of the water pump, the opening degree of the first regulating valve and the opening degree of the second regulating valve according to the pressure value of the first pressure sensor and the flow value of the first flow sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value, and the flow value of the first flow sensor is equal to a target flow value.
3. The fire fighting sprinkler system according to claim 2, further comprising a human-machine interaction device connected to the controller, the human-machine interaction device being configured to receive the target flow value, the target pressure value, a first input command for controlling the water pump, a second input command for controlling the first regulating valve, and a third input command for controlling the second regulating valve, the controller generating corresponding control commands according to the first input command, the second input command, and the third input command.
4. A fire protection sprinkler system in accordance with claim 1, further comprising a second pressure sensor disposed in a third fluid line, one end of said third fluid line connected to said fluid supply, the other end of said third fluid line connected between said pump and said second regulator valve.
5. A fire protection sprinkler system in accordance with claim 4, further comprising a valve body disposed between said second pressure sensor and said liquid supply.
6. A control method for a fire fighting sprinkler system according to any one of claims 1 to 5, comprising:
controlling the first regulating valve to be opened and the second regulating valve to be closed, and acquiring the rotating speed of the water pump, the opening of the first regulating valve and the flow value of the first flow sensor;
according to the flow value of the first flow sensor, the rotating speed of the water pump and the opening degree of the first regulating valve are regulated, so that the flow value of the first flow sensor is equal to a target flow value;
or controlling the first regulating valve to be closed and the second regulating valve to be opened, and acquiring the rotating speed of the water pump, the opening degree of the second regulating valve and the pressure value of the first pressure sensor;
according to the pressure value of the first pressure sensor, the rotating speed of the water pump and the opening degree of the second regulating valve are regulated, so that the pressure value of the first pressure sensor is equal to a target pressure value;
or controlling the first regulating valve and the second regulating valve to be opened, and acquiring the rotating speed of the water pump, the opening degree of the first regulating valve, the opening degree of the second regulating valve, the pressure value of the first pressure sensor and the flow value of the first flow sensor;
and controlling the rotating speed of the water pump, the opening degree of the first regulating valve and the opening degree of the second regulating valve according to the pressure value of the first pressure sensor and the flow value of the first flow sensor, so that the pressure value of the first pressure sensor is equal to a target pressure value, and the flow value of the first flow sensor is equal to a target flow value.
7. The method of controlling a fire sprinkler system of claim 6, further comprising:
determining that the first flow sensor and the first regulator valve are in a failure state when the first regulator valve is open and the second regulator valve is closed; controlling the rotating speed of the water pump to adjust the water outlet flow of the fire monitor;
or, when the second regulating valve is opened and the first regulating valve is closed, determining that the first pressure sensor and the second regulating valve are in a failure state; and controlling the rotating speed of the water pump to adjust the water outlet pressure at the second adjusting valve.
8. The method of controlling a fire sprinkler system of claim 6, further comprising:
and under the condition that the first regulating valve and the second regulating valve are both opened, determining that the rotating speed of the water pump is equal to a target rotating speed and/or the water level of a liquid supply device is equal to a target water level, and controlling the opening degree of the first regulating valve so that the flow value of the first flow sensor is smaller than a target flow value, or controlling the opening degree of the second regulating valve so that the flow value of the first pressure sensor is smaller than a target pressure value.
9. A fire fighting vehicle, comprising: the fire sprinkler system of any one of claims 1-5 and a vehicle body, the fire sprinkler system being disposed on the vehicle body.
10. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of the method of controlling a fire sprinkler system according to any one of claims 6-8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115300853A (en) * | 2022-07-29 | 2022-11-08 | 三一汽车制造有限公司 | Water outlet control method and device for fire truck and fire truck |
| WO2023115821A1 (en) * | 2021-12-23 | 2023-06-29 | 三一汽车制造有限公司 | Fire fighting truck, fire fighting sprinkler system and control method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100200083A1 (en) * | 2009-02-10 | 2010-08-12 | Surpass Industry Co., Ltd. | Flow rate controller |
| CN105498137A (en) * | 2015-12-04 | 2016-04-20 | 湖南三一路面机械有限公司 | Fire fighting truck and waterway control system thereof |
| CN110170133A (en) * | 2019-06-25 | 2019-08-27 | 徐工消防安全装备有限公司 | Fire-fighting liquid-supplying system and control method |
| CN110215637A (en) * | 2019-06-17 | 2019-09-10 | 沈阳金安科技有限公司 | A kind of intelligent fire, spray water system and control method |
| CN112169229A (en) * | 2020-10-30 | 2021-01-05 | 三一汽车制造有限公司 | Fire-fighting water path system and working vehicle |
| CN113350723A (en) * | 2021-06-25 | 2021-09-07 | 徐工集团工程机械股份有限公司 | Three-dimensional jet fire fighting truck and control method thereof |
-
2021
- 2021-12-23 CN CN202111593253.0A patent/CN114259676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100200083A1 (en) * | 2009-02-10 | 2010-08-12 | Surpass Industry Co., Ltd. | Flow rate controller |
| CN105498137A (en) * | 2015-12-04 | 2016-04-20 | 湖南三一路面机械有限公司 | Fire fighting truck and waterway control system thereof |
| CN110215637A (en) * | 2019-06-17 | 2019-09-10 | 沈阳金安科技有限公司 | A kind of intelligent fire, spray water system and control method |
| CN110170133A (en) * | 2019-06-25 | 2019-08-27 | 徐工消防安全装备有限公司 | Fire-fighting liquid-supplying system and control method |
| CN112169229A (en) * | 2020-10-30 | 2021-01-05 | 三一汽车制造有限公司 | Fire-fighting water path system and working vehicle |
| CN113350723A (en) * | 2021-06-25 | 2021-09-07 | 徐工集团工程机械股份有限公司 | Three-dimensional jet fire fighting truck and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023115821A1 (en) * | 2021-12-23 | 2023-06-29 | 三一汽车制造有限公司 | Fire fighting truck, fire fighting sprinkler system and control method therefor |
| CN115300853A (en) * | 2022-07-29 | 2022-11-08 | 三一汽车制造有限公司 | Water outlet control method and device for fire truck and fire truck |
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| CN114259676B (en) | 2023-06-23 |
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