CN114259676B - Fire engine, fire water spraying system and control method thereof - Google Patents
Fire engine, fire water spraying system and control method thereof Download PDFInfo
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- CN114259676B CN114259676B CN202111593253.0A CN202111593253A CN114259676B CN 114259676 B CN114259676 B CN 114259676B CN 202111593253 A CN202111593253 A CN 202111593253A CN 114259676 B CN114259676 B CN 114259676B
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Abstract
The invention provides a fire engine, a fire water spraying system and a control method thereof, wherein the fire water spraying system comprises: the device 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 extending direction of the first liquid pipeline; the second regulating valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first regulating valve, the first pressure sensor is arranged on the downstream of the second regulating valve, and the other end of the second liquid pipeline is used for being connected with a water device. The fire-fighting water spraying system has four working modes of a constant-pressure mode, a constant-current 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 truck, a fire-fighting water spraying system and a control method thereof.
Background
In recent years, natural disasters and emergency events in China are more and more, and fire-fighting equipment for rescuing and rescuing is more and more concerned; during the fire-fighting and disaster-saving process, the fire-fighting personnel is required to accurately control the fire-fighting equipment in the shortest time, so that the fire-fighting equipment fully plays the role of the fire-fighting equipment to achieve the aim of saving the fire for the rescue.
In fire fighting work, the fire fighting equipment needs to be quickly and accurately shifted so that the fire fighting equipment can be put into fire extinguishing work as soon as possible, however, the existing fire fighting equipment is imperfect in function and is unfavorable for quick unfolding and smooth performance of fire fighting work.
Disclosure of Invention
The invention provides a fire engine, a fire water spraying system and a control method thereof, which are used for solving the problem of imperfect functions of fire equipment in the prior art.
In a first aspect, the present invention provides a fire protection water spray system comprising: the device 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 extending direction of the first liquid pipeline;
The second regulating valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first regulating valve, the first pressure sensor is arranged on the downstream of the second regulating valve, and the other end of the second liquid pipeline is used for being connected with a water device.
According to the fire water spraying system provided by the invention, the fire water spraying system further comprises a controller, wherein 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;
when the controller controls the first regulating valve to be opened, the controller controls the rotating 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;
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 degree 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, in the case 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 water spraying system provided by the invention, the fire-fighting water spraying system further comprises a man-machine interaction device, wherein the man-machine interaction device is connected with the controller, the man-machine 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 water spraying system provided by the invention, the fire water spraying 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 water spraying system provided by the invention, the fire water spraying 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 truck comprising: the fire control water spray system is arranged on the car body.
In a third aspect, the present invention provides a control method of a fire protection water spray system, comprising:
the first regulating valve is controlled to be opened, the second regulating valve is controlled to be closed, and the rotating speed of the water pump, the opening of the first regulating valve and the flow value of the first flow sensor are obtained;
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, the first regulating valve is controlled to be closed, the second regulating valve is controlled to be opened, and the rotating speed of the water pump, the opening of the second regulating valve and the pressure value of the first pressure sensor are obtained;
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 to obtain 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 water spraying system provided by the invention further comprises the following steps:
determining that the first flow sensor and the first regulating valve are in a failure state when the first regulating valve is opened and the second regulating valve is closed; controlling the rotating speed of the water pump to regulate the water outlet flow of the fire monitor;
or determining that the first pressure sensor and the second regulating valve are in a failure state when the second regulating valve is opened and the first regulating valve is closed; and controlling the rotating speed of the water pump to adjust the water outlet pressure at the second regulating valve.
The control method of the fire water spraying system provided by the invention 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 the target rotating speed, and/or the water level of the liquid supply device is equal to the target water level, controlling the opening degree of the first regulating valve to enable the flow value of the first flow sensor to be smaller than the target flow value, or controlling the opening degree of the second regulating valve to enable the flow value of the first pressure sensor to be smaller than the target pressure value.
In a fourth aspect, the present 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 a method of controlling a fire protection water injection system as described in any one of the above.
Compared with the existing fire-fighting equipment, the fire-fighting truck, the fire-fighting water spraying system and the control method thereof have four working modes of a constant pressure mode, a constant current mode, a three-dimensional mode and a direct control mode, can adapt to various different working conditions, can stabilize the spraying flow of the fire-fighting truck, are beneficial to the stability of the whole water supply and water spraying chain, and are beneficial to reducing the burden of an elevating truck operator; the constant pressure mode can ensure that the safety of operators is not affected by the excessively high reaction force in the using process of the water using device, such as a water spraying gun; the direct control mode can directly control the engine under the condition that the system sensor and the regulating valve are in fault, so that the possibility of continuing safe operation to a certain extent is ensured, and the reliability of the system is improved; the three-dimensional mode can realize omnibearing fire extinguishment and improve the fire extinguishment efficiency.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a fire sprinkler system provided by the present invention;
FIG. 2 is a schematic flow chart of a control method of the fire sprinkler system provided by the 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
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the fire protection water spray system according to the embodiment of the present invention includes: 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, and 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.
The opening of the first regulating valve 3 can be adjusted according to actual requirements.
The second regulating valve 4 is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump 2 and the first regulating valve 3, the first pressure sensor 6 is arranged on the downstream of the second regulating valve 4, and the other end of the second liquid pipeline is used for being connected with a water device.
The opening of the second regulating valve 4 can be adjusted according to actual requirements. The water-using device may be a water gun, the specific type of which is not particularly limited herein.
The fire-fighting water spraying 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 value of the first flow sensor 5 is made equal to the target flow 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 too fast rotation speed of the water pump 2 from generating a pressure-holding phenomenon under the condition that the opening of the first regulating valve 3 is reduced, thereby causing damage to the structure of the water pump 2.
For example, in the case where the flow rate value of the first flow rate 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 controlled to increase until the flow rate value of the first flow rate sensor 5 is equal to the target flow rate value. In the case where the flow rate value of the first flow rate sensor 5 is greater than the target flow rate value, the rotation speed of the water pump 2 is controlled to decrease, and the opening degree of the first regulating valve 3 is decreased until the flow rate value of the first flow rate sensor 5 is equal to the target flow rate value. The target flow value may be a specific value or a range of values, which is selected according to the actual requirement, and is not specifically limited herein.
It should be noted that, in the case where the first adjusting valve 3 is opened, the second adjusting valve 4 is closed, and it is determined that the first flow sensor 5 and the first adjusting valve 3 are in a failure state, that is, the flow value in the first pipeline cannot be obtained at this time, the opening degree of the first adjusting valve 3 is a fixed value, and the water spray prevention system can use a direct control mode at this time, and the rotation speed of the water pump 2 is directly controlled by using the man-machine interaction module in the direct control mode so as to adjust the water flow rate of the fire monitor 7.
Only when the water gun is in an operating state, a constant pressure mode is used, that is, when the first regulating valve 3 is closed and the second regulating valve 4 is opened, the rotation 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 regulator valve 4 is increased until the pressure value of the first pressure sensor 6 is equal to the target pressure value. In the case where the pressure value of the first pressure sensor 6 is greater than the target pressure value, the rotation speed of the water pump 2 is controlled to decrease, and the opening degree of the second regulating valve 4 is decreased 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 the actual requirement, and is not specifically limited herein.
It should be noted that, in the case where 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 a 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, and the water spray prevention system may use a direct control mode in which the rotation speed of the water pump 2 is directly controlled by using the man-machine interaction module to regulate the water discharge pressure at the second regulating valve 4.
When both the fire monitor 7 and the water gun are in the working state, a three-dimensional mode is used, that is, when both the first regulating valve 3 and the second regulating valve 4 are opened, 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.
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 rate value of the first flow rate sensor 5 is smaller than the target flow rate 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 rate value of the first flow rate sensor 5 is equal to the target flow rate 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 rotation speed of the water pump 2 is controlled to be unchanged, the opening degree of the first regulating valve 3 is reduced, 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.
It should be noted that, in the case where 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 in the failure state, that is, the flow value in the first pipeline cannot be obtained at this time, the opening of the first regulating valve 3 and the opening of the second regulating valve 4 are both fixed values, and the water spray prevention system can use a direct control mode, in which the rotation speed of the water pump 2 is directly controlled by using the man-machine interaction module, so as to regulate the water flow of the fire monitor 7 and the water outlet pressure at the second regulating valve 4.
Compared with the existing fire-fighting equipment, the fire-fighting water spraying system provided by the embodiment of the invention has four working modes of a constant pressure mode, a constant current mode, a three-dimensional mode and a direct control mode, can adapt to various different working conditions, can stabilize the spraying flow of the fire-fighting truck, is beneficial to the stability of the whole water supply and water spraying chain, and is beneficial to reducing the burden of a lifting truck operator; the constant pressure mode can ensure that the safety of operators is not affected by the excessively high reaction force in the using process of the water using device, such as a water spraying gun; the direct control mode can directly control the engine under the condition that the system sensor and the regulating valve are in fault, so that the possibility of continuing safe operation to a certain extent is ensured, and the reliability of the system is improved; the three-dimensional mode can realize omnibearing fire extinguishment and improve the fire extinguishment efficiency.
In an alternative embodiment, the fire protection water injection 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, the rotation speed of the water pump 2 may be adjusted, and the flow value of the first flow sensor 5 and the pressure value of the first pressure sensor 6 may be received.
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 degree 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.
When the constant pressure mode is adopted, 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 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, and the controller controls the rotating speed of the water pump 2, the opening of the first regulating valve 3 and the opening 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 the water spray prevention system can use the direct control mode.
When the constant pressure mode is adopted, the controller determines that the first pressure sensor 6 and the second regulating valve 4 are in a failure state, and the water spray prevention system can use the direct control mode.
In an alternative embodiment, the controller may acquire 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-current mode, and the controller controls the rotating speed of the water pump 2 and the opening degree of the first regulating valve 3 until the flow value of the first flow sensor 5 is equal to the target flow value.
The controller determines that the second regulating valve 4 is opened, and when the first regulating valve 3 is closed, the system enters a constant pressure mode, and the controller controls the rotation 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.
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, and 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, during the fire extinguishing process, when the operator works by using the fire monitor, the water gun is opened at the tail end according to the requirement, at this time, the system automatically recognizes as a stereoscopic mode, and controls the pressure of the water gun, so as to avoid the risk of overhigh pressure.
The controller determines that the direct mode is entered in case 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 a disabled state.
The controller determines that the direct control mode is entered when the first regulating valve 3 is closed and the second regulating valve 4 is opened, and the first pressure sensor 6 and the second regulating valve 4 are determined to be in a 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 regulating valve 4.
Through automatic identification constant current, constant voltage, three-dimensional, direct control mode, can reduce equipment operating pressure, and when the maloperation appears, for example when big flow but big gun outlet valve is closed, there is huge security risk with the operating personnel of water installation, automatic identification becomes constant voltage mode, can reduce security risk.
In an alternative embodiment, the fire protection water spraying system further comprises a man-machine interaction device, the man-machine interaction device is connected with the controller, the man-machine interaction device is used for receiving a target flow value, a target pressure value, a first input instruction for controlling the water pump 2, a second input instruction for controlling the first regulating valve 3 and a 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, the man-machine interaction device comprises a touch screen, the touch screen is provided with a speed regulating button of the water pump 2, and the rotating speed of the water pump 2 can be correspondingly regulated by clicking the speed regulating button. The touch screen is provided with a first opening button of the first regulating valve 3, the opening of the first regulating valve 3 can be correspondingly adjusted by clicking the first opening button, the touch screen is provided with a second opening button of the second regulating valve 4, and the opening of the second regulating valve 4 can be correspondingly adjusted 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 current mode is adopted, a start button on the touch screen is clicked, the constant current 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 regulated, and the controller controls the opening 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.
In the constant pressure mode, a start 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 to be closed, the speed regulating button is continuously clicked, the target pressure value is regulated, 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.
In the stereoscopic mode, a start button on the touch screen is clicked, the stereoscopic mode is selected, the controller controls the first regulating valve 3 to be opened, the second regulating valve 4 to be opened, the speed regulating button is continuously clicked, the target flow value and the target pressure value are regulated, the controller controls the rotating speed of the water pump 2, the opening of the first regulating valve 3 and the opening of the second regulating valve 4 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.
In the direct control mode, a start 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-machine interaction device comprises a knob device by means of which the target flow value and the target pressure value can be adjusted, and also the engine speed can be adjusted by means of the knob device.
For example, in the case where the system recognizes the constant flow mode, 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 case where the system recognizes the constant pressure mode, 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 case where the system recognizes the stereoscopic mode, the controller automatically generates an adjustment control command for the target pressure value and the target flow rate value according to an 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 the 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 alternative embodiment, the fire protection water spraying system further comprises a second pressure sensor 8, wherein the second pressure sensor 8 is arranged 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.
By providing the second pressure sensor 8, the pressure value downstream of the water pump 2 can be obtained.
In an alternative embodiment, the fire protection water injection 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.
Wherein the first valve body 9 has two states of opening and closing, which cannot adjust the opening degree. In case the pressure value of the second pressure sensor 8 is too large, the first valve body 9 is opened to return the liquid fed by the water pump 2 to the liquid feeding device 1.
In an alternative embodiment, the fire protection water injection system further comprises a safety valve 10, the safety valve 10 being arranged in the third liquid line, the safety valve 10 being arranged upstream of the second pressure sensor 8.
The relief valve 10 can prevent the pressure value at the liquid outlet end of the water pump 2 from becoming too large.
In an alternative embodiment, the fire protection water injection system further comprises a check valve 12, the check valve 12 being arranged between the other end of the second liquid line and the second regulating valve 4.
The check valve 12 prevents the structure of the water pump 2 from being damaged by the backflow of the liquid stored in the closed pipeline of the first regulating valve 3 and the second regulating valve 4.
In an alternative embodiment, the fire protection water injection 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.
In the constant pressure mode, the flow rate value at the second regulator valve 4 can be obtained by the second flow rate sensor 11.
In an alternative embodiment, the fire protection water spray system further comprises a first infusion port 13, the first infusion port 13 being connected to the liquid supply device 1.
That is, an external water source can be delivered into the liquid supply device 1 through the first infusion port 13, so as to facilitate the continuous operation of the fire protection water spraying system.
Or, the fire-fighting water spraying system also 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, the fire water spray system also has a backup water source, which is now introduced into the first pipeline through the second fluid delivery port 15, and the water pump 2 can directly use the backup water source.
Alternatively, to ensure water stability, the fire protection water spray system includes both the first and second fluid delivery ports 13 and 15.
In an alternative embodiment, where the fire protection water injection system further comprises a second fluid delivery port 15, the fire protection water injection system further comprises a second valve body 14, the second valve body 14 being arranged between the fluid supply device 1 and the second fluid delivery port 15.
The second valve body 14 has two states of opening and closing, and cannot adjust the opening degree.
It should be noted that, by disposing the second valve body 14 between the liquid supply apparatus 1 and the second infusion port 15, the fire-fighting water spraying system can use two paths of water sources at the same time when the second valve body 14 is opened, and use a standby water source when the second valve body 14 is closed.
In addition, the embodiment of the invention also provides a fire engine, which comprises: the fire-fighting water spraying system is arranged on the vehicle body.
According to the fire truck provided by the embodiment of the invention, the equipment operation pressure can be reduced by automatically identifying the constant-current, constant-voltage, three-dimensional and direct-control modes, and when misoperation occurs, such as large flow but the first regulating valve 3 is closed, the operator of the water consumption device has huge safety risk, and the safety risk can be reduced by automatically identifying the constant-voltage mode.
In addition, as shown in fig. 2, the control method of the fire protection water spraying system according to the embodiment of the invention includes:
S100, controlling the first regulating valve 3 to be opened, and controlling the second regulating valve 4 to be closed, so as to obtain the rotating speed of the water pump 2, the opening 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 regulating valve 3 are regulated according to the flow rate value of the first flow rate sensor 5 so that the flow rate value of the first flow rate sensor 5 is equal to the target flow rate value.
In the constant-current mode, a start button on the touch screen is clicked, the constant-current 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 degree 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 the first regulating valve 3 is controlled to be closed, the second regulating valve 4 is controlled to be opened, and 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 are obtained;
the rotation speed of the water pump 2 and the opening degree of the second regulating valve 4 are regulated according to 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.
In the constant pressure mode, a start 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, the first regulating valve 3 and the second regulating valve 4 are controlled to be opened, and 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 are obtained;
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.
In the stereoscopic mode, a start button on the touch screen is clicked, the stereoscopic 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 according to the pressure value of the first pressure sensor 6 and the flow value of the first flow sensor 5, the opening of the first regulating valve 3 and the opening of the second regulating valve 4 are controlled 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.
Compared with the existing fire-fighting equipment, the control method of the fire-fighting water spraying system has four working modes of a constant-pressure mode, a constant-current mode, a three-dimensional mode and a direct control mode, wherein the constant-current mode can adapt to various different working conditions, can stabilize the spraying flow of the fire-fighting truck, is beneficial to the stability of the whole water supply and water spraying chain, is beneficial to the reduction of the burden of an elevating car operator, and can ensure that the safety of operators is not influenced by the excessively high reaction force in the use process of a water device, such as a water spraying gun; the direct control mode can directly control the engine under the condition that the system sensor and the regulating valve are in fault, so that the possibility of continuing safe operation to a certain extent is ensured, and the reliability of the system is improved; the three-dimensional mode can realize omnibearing fire extinguishment and improve the fire extinguishment efficiency.
In an alternative embodiment, the method further comprises:
s101, determining that the first flow sensor 5 and the first regulating valve 3 are in a failure state when the first regulating valve 3 is opened and the second regulating valve 4 is closed; the rotation speed of the water pump 2 is controlled to adjust the water outlet flow of the fire monitor 7.
Under the constant flow mode, the controller can acquire the flow value of the first flow sensor 5, adjust the opening of the first regulating valve 3, and 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 this time, the fire control water spraying system is switched from the constant flow mode to the direct control mode, and in the direct control mode, the speed regulating button is continuously clicked, so that the controller controls the rotating speed of the water pump 2 to regulate the water outlet flow of the fire monitor 7.
Or S102, in the case where 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 rotational speed of the water pump 2 is controlled to adjust the outlet water pressure at the second regulating valve 4.
Under the constant pressure mode, the controller can acquire the pressure value of the first pressure sensor 6, adjust the aperture of the second regulating valve 4, and under the condition that the first pressure sensor 6 and the second regulating valve 4 are in a failure state, the controller can not acquire the pressure value of the first pressure sensor 6 and can not adjust the aperture of the second regulating valve 4, at this time, the fire-fighting water spraying system is switched from the constant pressure 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 so as to regulate the water outlet pressure of the second regulating valve 4.
Or, in S103, when the first regulating valve 3 and the second regulating valve 4 are both opened, 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 in a failure state, and the rotation speed of the water pump 2 is controlled to regulate the water outlet flow of the fire monitor 7 and the water outlet pressure at the second regulating valve 4.
Under the stereoscopic mode, the controller can acquire the flow value of the first flow sensor 5 and the pressure value of the first pressure sensor 6, adjust the opening 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 of the first regulating valve 3 and the second regulating valve 4, at the moment, the fire water spraying system is switched from the stereoscopic mode to the direct control mode, and in the direct control mode, the speed regulating button is continuously clicked, 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 the water outlet pressure at the second regulating valve 4.
In an alternative embodiment, the method further comprises:
s200, in the case where both the first regulating valve 3 and the second regulating valve 4 are opened, 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 opening degree of the first regulating valve 3 is controlled so that the flow rate value of the first flow sensor 5 is smaller than the target flow rate value, or the opening degree of the second regulating valve 4 is controlled so that the flow rate value of the first pressure sensor 6 is smaller than the target pressure value.
Wherein, be equipped with liquid level sensor in the liquid supply device 1, liquid 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 the case where 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 apparatus 1 is equal to the target water level, the controller controls the decrease in the opening degree of the first regulating valve 3 so that the flow rate value of the first flow rate sensor 5 is smaller than the target flow rate value, and the flow rate value of the first pressure sensor 6 at this time is equal to the target pressure value.
Alternatively, the controller controls the first regulating valve 3 and the second regulating valve 4 to be opened, and in the 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 the case where 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 apparatus 1 is equal to the target water level, the controller controls the decrease in the opening degree of the second regulating valve 4 so that the flow rate value of the first flow rate sensor 5 at the time when the flow rate value of the first pressure sensor 6 is smaller than the target pressure value is equal to the target flow rate value.
The target water level may be 20% of the highest water level of the liquid supply apparatus 1. The target rotation speed may be the highest 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, are capable of performing the method of controlling a fire protection water injection system provided by the above methods.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the control method of the fire protection water spray system provided above.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A fire sprinkler system, comprising: the device 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 extending direction of the first liquid pipeline;
the second regulating valve is arranged on a second liquid pipeline, one end of the second liquid pipeline is connected between the water pump and the first regulating valve, the first pressure sensor is arranged at the downstream of the second regulating valve, and the other end of the second liquid pipeline is used for being connected with a water device;
The fire control water spraying system further comprises a controller, wherein 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;
when the controller determines that the first regulating valve is opened and the second regulating valve is closed, the system enters a constant-flow mode, and the controller controls the rotating speed of the water pump and the opening degree of the first regulating valve until the flow value of the first flow sensor is equal to a target flow value;
the controller determines that the second regulating valve is opened, when the first regulating valve is closed, the system enters a constant pressure mode, and the controller controls the rotating speed of the water pump and the opening degree of the second regulating valve until the pressure value of the first pressure sensor is equal to a target pressure value;
when the controller determines that the first regulating valve is opened and the second regulating valve is opened, the system enters a three-dimensional mode, and the controller controls the rotating speed of the water pump, the opening of the first regulating valve and the opening of the second regulating valve until the flow value of the first flow sensor is equal to a target flow value, and the pressure value of the first pressure sensor is equal to a target pressure value;
The controller determines that the first regulating valve is opened, the second regulating valve is closed, and the direct control mode is entered under the condition that the first flow sensor and the first regulating valve are in a failure state;
the controller determines that the direct control mode is entered when the first regulating valve is closed and the second regulating valve is opened and the first pressure sensor and the second regulating valve are determined to be in a failure state.
2. The fire protection water spray system according to claim 1, wherein the controller controls the rotation speed of the water pump and the opening degree of the first regulating valve according to the flow rate value of the first flow rate sensor so that the flow rate value of the first flow rate sensor is equal to a target flow rate value, with the controller controlling 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 degree 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, in the case 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 protection water injection system of claim 2, further comprising a human-machine interaction device coupled to the controller, the human-machine interaction device configured to receive the target flow value, the target pressure value, a first input command to control the water pump, a second input command to control the first regulator valve, and a third input command to control the second regulator valve, the controller generating corresponding control commands based on the first input command, the second input command, and the third input command.
4. The fire protection water injection system of claim 1, further comprising a second pressure sensor disposed in a third liquid line, one end of the third liquid line being connected to the liquid supply device, the other end of the third liquid line being connected between the water pump and the second regulator valve.
5. The fire protection water injection system of claim 4 further comprising a valve body disposed between the second pressure sensor and the liquid supply.
6. A control method of a fire protection water spray system according to any one of claims 1 to 5, comprising:
the first regulating valve is controlled to be opened, the second regulating valve is controlled to be closed, and the rotating speed of the water pump, the opening of the first regulating valve and the flow value of the first flow sensor are obtained;
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, the first regulating valve is controlled to be closed, the second regulating valve is controlled to be opened, and the rotating speed of the water pump, the opening of the second regulating valve and the pressure value of the first pressure sensor are obtained;
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 to obtain 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;
Controlling the rotation speed of the water pump, the opening of the first regulating valve and the opening 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;
further comprises: determining that the first flow sensor and the first regulating valve are in a failure state when the first regulating valve is opened and the second regulating valve is closed; controlling the rotating speed of the water pump to regulate the water outlet flow of the fire monitor;
or determining that the first pressure sensor and the second regulating valve are in a failure state when the second regulating valve is opened and the first regulating valve is closed; and controlling the rotating speed of the water pump to adjust the water outlet pressure at the second regulating valve.
7. The method of controlling a fire protection sprinkler system according to 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 the target rotating speed, and/or the water level of the liquid supply device is equal to the target water level, controlling the opening degree of the first regulating valve to enable the flow value of the first flow sensor to be smaller than the target flow value, or controlling the opening degree of the second regulating valve to enable the flow value of the first pressure sensor to be smaller than the target pressure value.
8. A fire engine, comprising: a vehicle body and a fire protection water injection system according to any one of claims 1 to 5, said fire protection water injection system being provided to said vehicle body.
9. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, realizes the steps of the control method of a fire protection water injection system according to any one of claims 6 to 7.
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| CN115300853B (en) * | 2022-07-29 | 2023-06-23 | 三一汽车制造有限公司 | Water outlet control method and device of fire engine and fire engine |
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| JP5395451B2 (en) * | 2009-02-10 | 2014-01-22 | サーパス工業株式会社 | Flow 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 |
| CN110215637B (en) * | 2019-06-17 | 2021-05-25 | 沈阳金安科技有限公司 | Intelligent fire-fighting and spraying water supply 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 |
| CN113350723B (en) * | 2021-06-25 | 2022-03-29 | 徐工集团工程机械股份有限公司 | Three-dimensional jet fire fighting truck and control method thereof |
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