CN106730545B - Additive metering injection system of water mist fire extinguishing system - Google Patents
Additive metering injection system of water mist fire extinguishing system Download PDFInfo
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- CN106730545B CN106730545B CN201611220678.6A CN201611220678A CN106730545B CN 106730545 B CN106730545 B CN 106730545B CN 201611220678 A CN201611220678 A CN 201611220678A CN 106730545 B CN106730545 B CN 106730545B
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Abstract
The invention relates to an additive metering injection system of a water mist fire extinguishing system, which comprises a material A feeding unit and a material B feeding unit; the additive metering and injecting system also comprises a first metering unit, a controller and a pump injection system; the controller is used for acquiring flow data from the first metering unit; and the pumping system pumps a substance B matched with the flow data acquired by the first metering unit into the water mist fire extinguishing system according to the control signal. The additive metering and injecting system has the advantages that the additive metering and injecting system of the water mist fire extinguishing system is highly universal and high in metering accuracy, the injection proportion of the additive and the fire extinguishing agent is controlled through the metering and feedback of the output end, and the metering and proportioning accuracy of the system is improved. By combining the first adjusting unit and the second adjusting unit, on one hand, the quick positioning of the comparative example selection is realized, and on the other hand, the positioning accuracy problem caused by the quick positioning is solved.
Description
Technical Field
The invention belongs to the technical field of fire extinguishing control in the field of fire fighting, relates to a high-pressure water mist fire extinguishing technology, and particularly relates to an additive metering and injecting system of a water mist fire extinguishing system.
Background
With the development of urban construction, urban traffic becomes one of the main factors restricting urban economic development, and under the condition that urban land resources are scarce day by day, urban construction becomes two major trends towards high-rise and underground, and traffic tunnels for communicating underground business centers, underground parking lots and overground high-rise buildings in various regions are longer and longer, and are more and more important. Urban traffic tunnels are complex in terrain, relatively closed in structure, and serious loss is caused once a fire disaster occurs due to traffic congestion caused by vehicles which are continuously increased. Therefore, the fire fighting research of urban traffic tunnel fire and the research, development and application of special equipment are urgent.
Meanwhile, cultural relics, ancient buildings and the like are continuously developed as tourism resources, similar to the development of urbanization construction, the fire fighting research of the environment and the research, development and application of special equipment are also very urgent.
The high-pressure water mist extinguishes fire by spraying the extinguishing agent (such as water) to a fire source after being atomized, and compared with fire extinguishing equipment such as a common fire hydrant, the high-pressure water mist extinguishment device has the advantages that the water source consumption is less, the fire extinguishing effect is better, and the advantages are obvious. Good feedback is obtained for applications in complex fire-fighting environments brought about by the above-listed urbanization and the like. However, it has a disadvantage of a long extinguishing time. In order to overcome the disadvantage of long extinguishing duration of water mist fire extinguishing systems, the applicant has proposed in a previous patent application a solution by adding a fire extinguishing additive. For the technical scheme that the fire extinguishing additive is added into a water mist fire extinguishing system to extinguish fire, the practice shows that the adding mode of the additive and the control capability of a comparative example are obvious for the fire extinguishing effect. In addition, the types and the dosage of the allowed additives are different for different environments, the requirements of different environments cannot be completely met by adopting the original additive addition scheme, and the technical universality is poor.
Disclosure of Invention
The invention aims to solve the problem of fire source isolation of the increasing fire hazard of a tunnel, and provides a water curtain isolation system for fire source isolation and application of the water curtain isolation system.
The technical scheme of the invention is as follows: the additive metering injection system of the water mist fire extinguishing system comprises a material A feeding unit and a material B feeding unit; the additive metering and injecting system is characterized by further comprising a first metering unit, a controller and a pumping and injecting system; the first metering unit is used for acquiring the flow data of the substance A injected into the water mist fire extinguishing system by the substance A feeding unit; the controller is used for acquiring flow data from the first metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system by taking the flow data as one of conditions; the pumping system is controlled by the control signal generated by the controller, and pumps a substance B matched with the flow data acquired by the first metering unit into the water mist fire extinguishing system according to the control signal; the substance A and the substance B are respectively one of a fire extinguishing agent and an additive for a water mist fire extinguishing system, and the substance A and the substance B are different substances.
Preferably, the additive metering and injecting system further comprises a second metering unit, and the second metering unit is used for acquiring the flow data of the substance B pumped by the pumping and injecting system to the water mist fire extinguishing system; the controller acquires the substance B flow data from the second metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system under one condition of the substance B flow data.
Preferably, the conversion unit includes a first tuning unit, and the first tuning unit is configured to select a discrete ratio value within an adjustable range limited by the conversion unit.
Preferably, the conversion unit includes a second tuning unit, and the second tuning unit is configured to correct and tune the specific discrete proportion value selected by the first tuning unit.
Preferably, the first tuning unit includes a proportion calculation program in the controller, a preset discrete proportion value, and a trigger unit for discretely selecting the proportion value, and the trigger unit is a physical switch key connected with the controller in a wired or wireless manner, or a function signal input key defined by a computer program.
Preferably, the second tuning unit includes a ratio calculation program in the controller, a preset continuously variable parameter N, and a trigger unit for continuously changing the ratio value, where the trigger unit is a potential key connected to the controller in a wired or wireless manner, or a function signal input key defined by a computer program.
Preferably, the controller is implemented by analog and/or digital cell circuits.
Preferably, the additive metering and injecting system is provided with an indicating unit, and the indicating unit is used for displaying the current selection item of the first adjusting and selecting unit and/or the proportion value.
Preferably, the signal input port for operating the first tuning unit and the second tuning unit is provided with a permission setting component.
Preferably, the permission setting component is one or more of a mechanical and/or electronic lock, an account of an access program and/or a password.
Preferably, the upper and lower adjustment limit ranges of the proportional values of the second adjustment unit do not exceed the preset discrete proportional value adjacent to the currently selected item of the first adjustment unit.
The additive metering and injecting system has the advantages that the additive metering and injecting system of the water mist fire extinguishing system is highly universal and high in metering accuracy, the injection proportion of the additive and the fire extinguishing agent is controlled through the metering and feedback of the output end, and the metering and proportioning accuracy of the system is improved. Meanwhile, by arranging the adjusting and selecting unit, the universality of the system is increased, and when different use environments and different additive types are adopted, the corresponding additive injection proportion can be set through adjustment and selection. By combining the first adjusting unit and the second adjusting unit, on one hand, the quick positioning of the comparative example selection is realized, and on the other hand, the positioning accuracy problem caused by the quick positioning is solved.
Drawings
FIG. 1 is a schematic diagram of a pump set in an additive metering injection system of a water mist fire suppression system according to an embodiment of the invention;
FIG. 2 is a schematic view of the structure of a pump group connecting fire protection sub-area in an additive dosing system of a water mist fire suppression system according to an embodiment of the invention;
FIG. 3 is a schematic view of fire zone control in a water mist fire suppression system additive dosing system according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention are designed in accordance with the principles of the present invention, which is further described below in conjunction with the drawings and the following detailed description.
The additive metering injection system of the water mist fire extinguishing system comprises a material A supply unit and a material B supply unit; the additive metering and injecting system is characterized by further comprising a first metering unit, a controller and a pumping and injecting system; the first metering unit is used for acquiring the flow data of the substance A injected into the water mist fire extinguishing system by the substance A feeding unit; the controller is used for acquiring flow data from the first metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system by taking the flow data as one of conditions; the pumping system is controlled by the control signal generated by the controller, and pumps a substance B matched with the flow data acquired by the first metering unit into the water mist fire extinguishing system according to the control signal; the substance A and the substance B are respectively one of a fire extinguishing agent and an additive for a water mist fire extinguishing system, and the substance A and the substance B are different substances. That is, the substance a may be either an additive or a fire extinguishing agent; correspondingly, the substance B can also be an additive or a fire-extinguishing agent. When the substance A is an additive, the substance B is only a fire extinguishing agent, and the substance A and the substance B are not the same. The fire extinguishing agent is usually the main medium for extinguishing fire, such as water in a high pressure hydrant system. The additive is a medicament for improving the fire extinguishing capability of the fire extinguishing agent, generally occupies a small proportion, and can be a physical additive or a chemical additive allowed to be used in the applied environment.
In a preferred embodiment, the additive metering and injecting system further comprises a second metering unit, and the second metering unit is used for acquiring the flow data of the substance B pumped by the pumping and injecting system to the water mist fire extinguishing system; the controller acquires the substance B flow data from the second metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system under one condition of the substance B flow data. Considering that the original metering mode directly controls the injection amount of the substance B through a variable frequency pump and the like by detecting the flow of the substance A, the injected substance B is not accurate due to the influence of factors such as measurement errors and individual difference of the variable frequency pump. Therefore, the scheme improves the original scheme, and the flow signal acquired by the controller is higher in accuracy by acquiring the flow signal of the substance B at the output end of the pump and performing feedback calculation. In addition, substance a may be both an additive and a fire extinguishing agent in this embodiment, so in practice this embodiment provides two different embodiments. Obviously, the above two schemes are all within the protection scope of the present invention.
In an embodiment, the conversion unit includes a first tuning unit, and the first tuning unit is configured to select a discrete scale value within an adjustable range limited by the conversion unit. There are many conditions for limiting the range of adjustment of the scale value used in the present embodiment, including the range of allowable parameters of circuit elements, the range of allowable selection of scale addition, and the like. The direct selection of discrete values avoids the time-efficient problem of continuous selection. And the proportion of the fire extinguishing agent to the additive can be classified and indicated according to the approximate range of the discrete values, and the discrete proportion values can be defined into specific categories, such as the categories of the additive and the like. The discrete values may be uniformly set within a selectable range, and other setting manners may be adopted, for example, it is preferable that the intermediate value of the applicable ratio range of the common class of additives be adopted as the discrete ratio value.
In an embodiment of the present invention, the conversion unit includes a second tuning unit, and the second tuning unit is configured to perform adjustment and selection on the specific discrete scale value selected by the first tuning unit. Although the discrete value adjusting unit can quickly perform proportion selection and can perform pattern matching, the numerical range corresponding to the discrete value is single after all, and the universality is not strong. In application, the injection proportion of the additive can be finely adjusted according to different parameters such as wind speed, space size and the like, so that the improvement of the application effect of the second adjusting and selecting unit on the system is also very critical. The universality and the proportioning accuracy can be improved on the whole. The overall performance of the system is improved. Moreover, the functions of each discrete proportion value which needs to be finely adjusted are extracted and then are concentrated to a single control end for control, so that the operation difficulty of the system is effectively simplified.
In a preferred embodiment, the first tuning unit includes a ratio calculation program in the controller, a preset discrete ratio value, and a trigger unit for discretely selecting the ratio value, where the trigger unit is a physical switch key connected to the controller in a wired or wireless manner, or a function signal input key defined by a computer program.
In a preferred embodiment, the second tuning unit includes a ratio calculation program in the controller, a preset continuously variable parameter N, and a trigger unit for continuously changing the ratio value, where the trigger unit is a potential key connected to the controller in a wired or wireless manner, or a function signal input key defined by a computer program. In a preferred embodiment, the controller is implemented by analog and/or digital cell circuits.
The three embodiments respectively provide the schemes that the adjusting unit and the control unit are controlled and realized by computer software and hardware, a hardware analog-digital circuit and the like.
In a preferred embodiment, the additive dosing system is provided with an indicator unit for displaying the current selection of the first tuning unit and/or the ratio value. As with other fire fighting equipment, this equipment is also typically in use in a long-term standby mode, so it is necessary to provide reference parameters for maintenance and routine inspection. The embodiment provides a simple scheme for indicating the working state of the system, and provides a basis for routine inspection.
In the scheme of the preferred embodiment, the signal input port for operating the first tuning unit and the second tuning unit is provided with an authority setting component. In the preferred embodiment, the permission setting component is one or more of a mechanical and/or electronic lock, an account of an access program and/or a password. Since fire fighting equipment involves safety issues, fire fighting equipment naturally has a need for the implementation of rights management. The embodiment provides multiple practical rights management schemes, including setting passwords and rights users on an interface of an application setting system, and locking hardware-selectable components.
In an embodiment, the range of the upper and lower tuning limits of the scale value of the second tuning element does not exceed the preset discrete scale value adjacent to the currently selected item of the first tuning element. The scheme is the limitation on the adjustable range of the second adjusting unit, the possibility of misoperation of the system can be effectively reduced through the limitation, and the safety performance of the system is improved to a certain extent. The limitation of the tuning range can be realized by circuit logic, software programs, or other modes such as setting a tuning limit card.
The following are some references to water mist fire suppression system technology, tunnel high pressure water mist fire hydrant system: under the condition of the same fire control effect, the water consumption is expected to be reduced by 80 percent compared with the conventional fire hydrant system, and the control capability of A, B-class fire in the initial stage and the development stage of a fire can be realized.
With the development of urban construction, urban traffic becomes one of the main factors restricting urban economic development, and under the condition that urban land resources are scarce day by day, urban construction becomes two major trends towards high-rise and underground, and traffic tunnels for communicating underground business centers, underground parking lots and overground high-rise buildings in various regions are longer and longer, and are more and more important.
Urban traffic tunnels are complex in terrain, relatively closed in structure, and serious loss is caused once a fire disaster occurs due to traffic congestion caused by vehicles which are continuously increased. Therefore, the fire fighting research of urban traffic tunnel fire and the research, development and application of special equipment are urgent. The influence of the fine water mist added with additives of different components on the fire extinguishing effect of different tunnel structures and fire categories is researched, and the injection proportion and the injection method of the recommended additives can be obtained.
The scheme of the embodiment can exist in the form of a high-pressure water mist pump set with an additive injection function.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (8)
1. The additive metering injection system of the water mist fire extinguishing system comprises a material A feeding unit and a material B feeding unit; the additive metering and injecting system is characterized by further comprising a first metering unit, a controller and a pumping and injecting system; the first metering unit is used for acquiring the flow data of the substance A injected into the water mist fire extinguishing system by the substance A feeding unit; the controller is used for acquiring flow data from the first metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system by taking the flow data as one of conditions; the pumping system is controlled by the control signal generated by the controller, and pumps a substance B matched with the flow data acquired by the first metering unit into the water mist fire extinguishing system according to the control signal; the substance A and the substance B are respectively one of a fire extinguishing agent and an additive for a water mist fire extinguishing system, and the substance A and the substance B are different substances;
the material A feeding unit comprises a water tank and a high-pressure pump set connected with the water tank, the pump injection system comprises an additive injection pump set, and the additive injection pump set is arranged on an output pipeline of the high-pressure pump set and is used for pumping a material B into the pipeline;
the conversion unit comprises a first adjusting unit, and the first adjusting unit is used for selecting discrete proportion values within the adjustable range limited by the conversion unit;
the conversion unit comprises a second adjusting unit which is used for correcting and adjusting the specific discrete proportion value selected by the first adjusting unit;
the upper and lower adjustment limit ranges of the proportional value of the second adjustment unit do not exceed the preset discrete proportional value adjacent to the current selection item of the first adjustment unit.
2. The water mist fire suppression system additive dosing system according to claim 1, further comprising a second metering unit for obtaining data on the flow rate of material B pumped by the pumping system into the water mist fire suppression system; the controller acquires the substance B flow data from the second metering unit, and a conversion unit arranged in the controller generates a control signal which can be used for controlling the pumping system under one condition of the substance B flow data.
3. The water mist fire extinguishing system additive dosing system according to claim 1, wherein the first selection unit comprises a ratio calculation program in the controller, a preset discrete ratio value, and a trigger unit for discrete selection of the ratio value, wherein the trigger unit is a physical switch key connected with the controller in a wired or wireless manner, or a function signal input key defined by a computer program.
4. The water mist fire extinguishing system additive dosing system according to claim 1, wherein the second adjusting unit comprises a ratio calculating program in the controller, a preset continuously variable parameter N, and a triggering unit for continuously changing the ratio value, wherein the triggering unit is a potential key connected with the controller in a wired or wireless manner or a function signal input key defined by a computer program.
5. The water mist fire suppression system additive dosing system of claim 1, wherein the controller is implemented by analog and/or digital unit circuitry.
6. The water mist fire suppression system additive dosing system according to any one of the claims 3 to 5, wherein the additive dosing system is provided with an indication unit for displaying a current selection of the first adjustment unit, and/or a ratio value.
7. The water mist fire suppression system additive dosing system of claim 6, wherein the signal input port for operating the first and second pod units is provided with an authority setting assembly.
8. The water mist fire suppression system additive dosing system of claim 7, wherein the authority setting component is one or more of a mechanical and/or electronic lock, an account for access procedures, and/or a password.
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| CN201611220678.6A CN106730545B (en) | 2016-12-26 | 2016-12-26 | Additive metering injection system of water mist fire extinguishing system |
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| CN201611220678.6A CN106730545B (en) | 2016-12-26 | 2016-12-26 | Additive metering injection system of water mist fire extinguishing system |
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