KR20220144023A - Apparatus for selecting fire pump for fire fighting vehicles - Google Patents

Abstract

According to an embodiment of the present invention, a fire pump analysis device for a fire fighting vehicle comprises: at least one processor; and a memory for storing commands processed by the processor. The commands stored in the memory include a command that selects a fire pump for each situation by calculating the water pressure, light, and water flow rate for each fire pump for a fire fighting vehicle using performance data and fire hose data for each fire pump for a fire fighting vehicle and comparing with field situation data.

Description

Fire pump selection device for fire fighting vehicles {Apparatus for selecting fire pump for fire fighting vehicles}

The present invention relates to a fire pump analysis selection device for a fire fighting vehicle, and more specifically, by using performance data for each fire pump according to the fire pump analysis for fire fighting vehicles, fire hose data, and field situation data to select a fire pump for a fire fighting vehicle for each situation The invention relates to a fire pump analysis selection device for a fire fighting vehicle and a method therefor.

All of the existing fire pumps for fire fighting vehicles are certified according to the accreditation standards of the Korea Fire Service Industry and Technology Institute. Fire pump performance should be evaluated for suitability. According to the fire pump regulations, the efficiency and fire pump characteristic curves must satisfy the tolerance for the values suggested by the manufacturer.

In applying a fire pump suitable for performance to a fire site, it is important to select and input a fire pump suitable for the site situation. Due to the nature of the fire site where golden time is important, it is necessary to quickly and accurately select the necessary fire pump for the site.

The technical problem to be solved by the present invention is to provide a fire fighting pump selection device for a fire fighting vehicle for selecting a fire fighting pump for a fire fighting vehicle for an appropriate response for each fire site situation.

In order to solve the above technical problem, a fire pump selection device for a fire fighting vehicle according to an embodiment of the present invention includes at least one processor; and a memory for storing instructions processed by the processor, wherein the instructions stored in the memory calculate a waterproof pressure and a waterproof flow rate for each fire pump for a fire fighting vehicle using performance data and fire hose data for each fire pump for a fire fighting vehicle, It includes a command to select a fire pump for a fire fighting vehicle for each situation by comparing it with the field situation data.

In addition, the command stored in the memory includes the friction coefficient for each fire hose in the performance data for each fire pump for the fire fighting vehicle, the pressure drop according to the connection and connection quantity of additionally connected additional fire hoses, and the connection and connection quantity of the Y-connector. It may include a command to calculate the waterproof pressure and the waterproof flow rate by applying the pressure drop according to the.

In addition, the field situation data includes a required waterproofing pressure, a required waterproofing flow rate, a required number of fire hoses, and a required number of fire hoses, and the command stored in the memory is the required number of fire hoses and the necessary fire hose players. It may include a command for selecting a fire pump for a fire fighting vehicle that satisfies the waterproof pressure condition and the required waterproof flow rate condition as the fire pump for the fire fighting vehicle for each situation.

In addition, the command stored in the memory receives a measurement value of the discharge pressure according to the discharge amount of the fire pump for the fire fighting vehicle, and analyzes the performance of the fire pump for the fire fighting vehicle using the input measurement value, the reference value, and the tolerance. It may include a command for generating performance data for each fire pump for a fire fighting vehicle.

In addition, the measured value is a pump characteristic curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle, and the reference value is a reference curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle. It is determined whether the pump characteristic curve is within the tolerance of the reference curve while adding the unit discharge amount, and when the difference between the measured discharge pressure value at the current discharge amount and the next discharge amount is equal to or greater than the first threshold value, the added unit discharge amount is halved It may contain a reduction command.

According to embodiments of the present invention, it is possible to select a fire pump for a fire fighting vehicle for an appropriate response for each fire site situation.

1 is a block diagram of a device for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention.
2 to 5 are diagrams for explaining a process of selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention.
6 is a flowchart of a method for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between the embodiments. It can be used by combining or substituted with

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or one or more) of A and (and) B, C", it is combined with A, B, C It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled', or 'connected' to another component, the component is directly 'connected', 'coupled', or 'connected' to the other component. In addition to the case, it may include a case of 'connected', 'coupled', or 'connected' by another element between the element and the other element.

In addition, when it is described as being formed or disposed on "above (above)" or "below (below)" of each component, "above (above)" or "below (below)" means that two components are directly connected to each other. It includes not only the case of contact, but also the case where one or more other components are formed or disposed between two components. In addition, when expressed as "upper (upper)" or "lower (lower)", the meaning of not only an upper direction but also a lower direction based on one component may be included.

1 is a block diagram of an apparatus 100 for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention.

The apparatus 100 for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention includes at least one processor 110 and a memory 120 .

The processor 110 processes the command stored in the memory, the memory 120 stores the command 121 processed by the processor 110, and a reference value used to analyze the fire pump for a fire fighting vehicle or for each fire pump for a fire fighting vehicle You can store performance data.

According to the instruction 121 stored in the memory 120, the processor 110 calculates the waterproof pressure light and the waterproof flow rate for each fire pump for the fire fighting vehicle using the performance data and the fire hose data for each fire pump for the fire fighting vehicle, and the field situation data and Compare and select a fire pump for fire fighting vehicles for each situation.

When a fire fighting vehicle is put into a fire site, a fire pump and fire hose necessary for the fire site must be installed. To this end, it is possible to accurately calculate the pressure drop of the fire pump when the fire hose and the fire hose are applied, as well as the performance of the fire pump, so that a fire pump suitable for the field situation can be selected.

As shown in FIG. 2 , performance data for each fire pump for a fire fighting vehicle can be calculated through a performance test for each fire pump product using the fire pump product information (specification). Here, the performance data for each fire pump for a fire fighting vehicle may include at least one of discharge amount, pressure, efficiency, and discharge pipe size.

In order to calculate the pressure drop of the fire pump when the fire hose is connected, the friction coefficient of the fire hose, the additional fire hose connection pressure drop, and the Y-connection pressure drop data can be used.

Using the performance data for each fire pump for fire fighting vehicles and the fire hose data, the waterproof pressure light and waterproof flow rate for each fire pump for fire fighting vehicles are calculated, and an appropriate fire pump is selected for each situation through comparison with the data for each site situation, and the corresponding information can be provided to users.

The performance data for each fire pump for the fire fighting vehicle receives the fire pump measurement value 131 for the fire fighting vehicle, and analyzes the fire pump performance for the fire fighting vehicle using the input measurement value, the reference value, and the tolerance. can be used as data for selection. If the performance data provided by the manufacturer is used as it is, if the results are different from the data at the actual fire site, it can be fatal. Therefore, it is necessary to verify whether the performance data for each fire pump for a fire fighting vehicle is accurate.

Firefighting equipment standard specification (KFS 0001-2018-01) defines the fire pump standard specification. Fire pump performance evaluation criteria for fire pumps, especially for high-pressure and large-flow fire-fighting vehicles, can only be used if they meet the fire pump standard specifications. Here, the fire pump refers to a centrifugal pump installed on the chassis of a fire engine and driven by the power of an engine. The fire pump to be installed in the fire engine must pass the efficiency test. As one of the conditions of the efficiency test, the efficiency and fire pump characteristic curve must not exceed ±5% from the value suggested by the manufacturer. In analyzing the fire pump for a fire fighting vehicle, it should be analyzed whether the measured value, that is, the pump characteristic curve, satisfies the reference curve as the reference value and the tolerance range.

The measured value 131 of the fire pump for fire fighting vehicle is measured and input in the fire pump performance evaluation system for fire fighting vehicle. A fire pump performance evaluation system for a fire fighting vehicle may be configured as shown in FIG. 3 . Install and fix the fire pump to be tested, connect the fire pump to the water tank, and drive the drive motor to measure the information about the flow rate discharged from the water outlet. In this case, the measurement may be performed using a flow meter, a water outlet pressure gauge, an absorption port pressure gauge, a rotation speed meter, and the like.

The fire pump selection device 100 for a fire fighting vehicle may receive the measured data and perform an analysis. It can measure outdoor temperature and humidity, collect and monitor measurement data, and analyze data. Thereafter, the measured data may be expressed as a pump characteristic curve. Thereafter, it is possible to analyze whether the pump characteristic curve satisfies the standard using the reference curve as the reference value.

Alternatively, the fire pump selection device 100 for a fire fighting vehicle may receive as an input a pump characteristic curve generated by an external analysis device using measurement data from an external analysis device, and analyze the received pump characteristic curve using a reference curve. have.

Here, the measured value may be a pump characteristic curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle, and the reference value may be a reference curve of the discharge pressure according to the discharge amount of the fire pump for the fire fighting vehicle. The pump characteristic curve and the reference curve may be, for example, as shown in FIG. 4 .

As shown in FIG. 4, the pump characteristic curve is a curve that appears on the graph in which the x-axis is the discharge amount and the y-axis is the discharge pressure, through which the efficiency of the fire pump can be calculated.

The discharge amount (Q) means the amount of water discharged by the fire pump per unit time at the nominal discharge pressure (P_N), the nominal rotational speed (n_N) and the nominal suction lift (H_S geoN), and the discharge pressure (P) is the outlet pressure and the suction port. It means the pressure difference. Here, the suction port pressure (Pe) refers to the pressure of the fire pump measured at the position where the suction port pressure gauge is installed, and may be a positive or negative value. The water outlet pressure (Pa) means the pressure of the fire pump measured at the location where the water outlet pressure gauge is installed.

The discharge pressure (P) for each discharge amount (Q) of the pump characteristic curve is measured from the segment pressure (P_a0), and can be derived by calculating the manual force and driving force from the pump characteristic curve, and the manual force (P_Q) is the discharge pressure and the discharge amount. , and the driving force (P_M) can be calculated as the axial horsepower supplying the power of the fire pump, and the efficiency of the fire pump can be derived from the efficiency characteristic curve based on the characteristic curve of the nominal rotation speed (n_N). The pump characteristic curve is based on the characteristic curve of the nominal rotational speed (n_N) at the corrected nominal suction lift (H'_SgeoN). It can be checked and a pump characteristic curve can be derived.

At this time, the pump characteristic curve should not exceed the tolerance of the reference curve suggested by the manufacturer. The tolerance may be, for example, ± 5 %.

The processor 110 may analyze the performance of the fire pump for a fire fighting vehicle by determining whether the pump characteristic curve is within a tolerance of the reference curve.

The processor 110 determines whether the pump characteristic curve is within the tolerance of the reference curve by adding the unit discharge amount to the initial discharge amount in order to determine whether the pump characteristic curve is within the tolerance of the reference curve, but the current discharge amount and the next When the difference between the discharge pressure measurement values in the discharge amount is equal to or greater than the first threshold value, the added unit discharge amount may be halved.

A process in which the processor 110 determines whether the pump characteristic curve is within the tolerance of the reference curve will be described with reference to FIG. 4 .

In the initial discharge amount a, the discharge pressure value A' is compared with the reference curve discharge pressure A, and it is determined whether the difference between A' and A is within the allowable error, and whether the corresponding discharge amount satisfies the standard. In comparing the curves, it is determined whether the pump characteristic curve is within the tolerance of the reference curve by adding the unit discharge amount to the initial discharge amount rather than comparing the discharge pressures at all discharge amounts. That is, as shown in FIG. 4 , it is determined whether the pump characteristic curve is within the tolerance of the reference curve while adding the unit discharge amount δ. If the discharge amount a satisfies the tolerance, it is determined whether the discharge pressure B' is within the allowable error by comparing the discharge amount b with the discharge pressure B of the reference curve at the discharge amount b plus the unit discharge amount δ.

In the process of determining whether the pump characteristic curve is within the tolerance of the reference curve while adding the unit discharge amount, if the difference between the current discharge amount and the discharge pressure measurement value at the next discharge amount is equal to or greater than the first threshold value, the added unit discharge amount is halved can be reduced to For more accurate analysis, when the difference between the measured discharge pressure at the current discharge amount and the next discharge amount is equal to or greater than the first threshold value, the unit discharge amount added to the current discharge amount to calculate the discharge amount to be compared next may be reduced by half. That is, in a section in which the size of the discharge pressure is greatly changed by more than the first threshold value, a more accurate comparison can be performed by reducing the unit discharge amount. That is, by examining the fluctuation range, when the fluctuation range is equal to or greater than the first threshold value, the unit discharge amount may be varied.

As shown in FIG. 4 , when the current discharge amount satisfies the tolerance in c, and the comparison is performed in the next section d, the discharge pressure C' in the current discharge amount c and the discharge pressure D' in the next section, the discharge amount d' Compared with , when the difference between C' and D' is equal to or greater than the first threshold value, the unit discharge amount δ is reduced to δ/2 and added to c, so that the comparison is performed at the discharge amount e instead of the discharge amount d. That is, the discharge pressure E' and E are compared in the discharge amount e. Through this, fast and accurate performance analysis is possible.

After reducing the unit discharge amount according to the difference between the current discharge amount and the discharge pressure measurement value at the next discharge amount and the first threshold value, apply the unit discharge amount (δ) before the change again to see if the pump characteristic curve is within the tolerance of the reference curve can be judged That is, it is determined whether the pump characteristic curve is within the tolerance of the reference curve based on the unit discharge amount, but the unit discharge amount is halved (δ/ 2) can be applied and returned to the original unit discharge amount (δ). Alternatively, when the reduced unit discharge amount is maintained in a later section or when the fluctuation range is increased again, it can be further reduced, and when the fluctuation range is reduced, it can be increased again. In addition, the unit discharge amount may be varied according to the fluctuation range, but may be reduced or increased by a ratio other than half. That is, the unit discharge amount may be varied in inverse proportion according to the variation width or may be changed to a value set by the user. In addition, the unit discharge amount may be varied in various ways.

The process of determining whether the pump characteristic curve is within the tolerance of the reference curve may be performed as shown in FIG. 5 . It is judged whether the difference between the reference value and the measured value is within the allowable error in the entire measured discharge volume section, and if it is within the allowable error, the test passes, and if it is over the allowable error, it fails. When comparing in the next section, the fluctuation range is first inspected, and if the fluctuation range is less than the first threshold value, a process is performed to determine whether it is within the tolerance. If the fluctuation range is greater than the first threshold value, the unit discharge amount is reduced by half It determines whether it is within the tolerance in other sections. After that, it is possible to determine whether the unit discharge amount, which is reduced by half, is within the allowable error by applying the original unit discharge amount again. If it is within the allowable error in the whole or section, it can be judged as passing the final inspection.

As described above, the performance data of the fire pump for the fire fighting vehicle that has passed the final inspection may be used as the performance data of the fire pump for the fire fighting vehicle to be used to select the fire pump for the fire fighting vehicle for each fire situation.

In the performance data for each fire pump for the fire fighting vehicle, the processor 110 includes a friction coefficient for each fire hose, a pressure drop according to the connection and connection quantity of additionally connected additional fire hoses, and a pressure drop according to the connection and connection quantity of the Y-connector. can be applied to calculate the waterproof pressure and waterproof flow rate. Here, the Y-connector is a Y-shaped device that can connect a plurality of fire hoses by branching the fire hose.

As described above, the performance data for each fire pump for fire fighting vehicles that have been verified is the performance of the fire pump itself. It should be judged whether the waterproof pressure and waterproof flow rate when the hose is applied are suitable for the actual fire site.

To this end, the fire hose data 132 is input, and the friction coefficient for each fire hose, the pressure drop according to the connection and connection quantity of additional fire hoses that are additionally connected, and the pressure drop according to the connection and connection quantity of the Y-connector are calculated. Calculate the waterproof pressure and waterproof flow rate according to the connection of the fire hose and the Y-connection to the fire pump. The fluid discharged from the fire pump moves through the fire hose, and the pressure drops due to friction with the fire hose. , when connecting the Y-connector for branching, the pressure drop occurs even when branching by the Y-connection.

That is, by applying the pressure drop according to the connection of the fire hose to the performance data of the fire pump, it is possible to calculate the waterproof pressure and the waterproof flow rate of the fluid actually discharged from the fire hose at the end.

As described above, the processor 110 is used to select a fire pump for a fire fighting vehicle for each situation by using the calculated waterproof pressure and waterproof flow rate and the field situation data to which the fire pump is to be input. Here, the field situation data may include a required waterproofing pressure, a required waterproofing flow rate, a required number of fire hoses, and a required number of fire hoses. Depending on the type and size of the fire, the accessibility to the fire site, etc., the required waterproof pressure, the required waterproofing flow rate, the required number of fire hoses, and the required number of fire hoses to extinguish the fire may vary depending on the site situation.

Accordingly, the processor 110 may select a fire pump for a fire fighting vehicle that satisfies the required waterproof pressure condition and the required waterproof flow rate condition according to the required number of fire hoses and the required fire hose players as the fire pump for each situation. have.

The processor 110 calculates the waterproof pressure and waterproof flow rate of the fire pump for a candidate fire fighting vehicle when the required number of fire hoses and the bow is applied, determines whether the necessary waterproof pressure condition and the required waterproof flow rate condition are satisfied, and the required waterproof pressure A fire pump that satisfies the conditions and required waterproofing flow rate conditions can be selected as a fire pump for fire fighting vehicles for each situation.

6 is a flowchart of a method for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention.

A method for selecting a fire pump for a fire fighting vehicle according to an embodiment of the present invention is a method for selecting a fire pump for a fire fighting vehicle using a fire pump selecting device for a fire fighting vehicle including at least one processor and a memory for storing instructions processed by the processor, S11 In step S12, performance data for each fire pump for fire fighting vehicles, fire hose data, and field situation data are input, and in step S12, performance data for each fire pump for fire fighting vehicles and fire hose data are used to provide waterproof pressure light and waterproof flow rate for each fire pump for fire fighting vehicles. is calculated and compared with the field situation data to select a fire pump for fire fighting vehicles for each situation.

The performance data for each fire pump for the fire fighting vehicle is generated by receiving a measurement value of the discharge pressure according to the discharge amount of the fire pump for the fire fighting vehicle, and analyzing the performance of the fire pump for the fire fighting vehicle using the input measurement value, the reference value, and the tolerance. can do. Here, the measured value is a pump characteristic curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle, and the reference value is a reference curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle. It is determined whether the characteristic curve is within the allowable error of the reference curve, and when the difference between the measured discharge pressure at the current discharge amount and the next discharge amount is equal to or greater than the first threshold value, the added unit discharge amount may be halved.

By applying the friction coefficient for each fire hose to the performance data for each fire pump for the fire fighting vehicle, the pressure drop according to the connection and connection quantity of additional fire hoses that are additionally connected, and the pressure drop according to the connection and connection quantity of the Y-connection port, the waterproof pressure is applied. And it is possible to calculate the waterproof flow rate.

The on-site situation data may include a required waterproof pressure, a required waterproofing flow rate, a required number of fire hoses, and a required number of fire hoses, and the required waterproof pressure condition and the required waterproofing according to the required number of fire hoses and the required fire hose bow. A fire pump for a fire fighting vehicle that satisfies the flow rate condition may be selected as the fire pump for a fire fighting vehicle for each situation.

Meanwhile, the embodiments of the present invention can be implemented as computer-readable codes on a computer-readable recording medium. The computer-readable recording medium includes all types of recording devices in which data readable by a computer system is stored.

Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices. Also, computer-readable recording media are distributed in networked computer systems. , computer-readable code can be stored and executed in a distributed manner. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the technical field to which the present invention pertains.

A person of ordinary skill in the art related to this embodiment will understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100: fire-fighting pump selection device for fire-fighting vehicles
110: processor
120: memory
131: measured value of fire pump for fire fighting vehicle
132: fire hose data
133: field situation data

Claims (5)

at least one processor; and
Including a memory for storing instructions processed by the processor,
The instructions stored in the memory are
For fire fighting vehicles including a command to calculate waterproof pressure light and waterproof flow rate for each fire pump for fire fighting vehicles using performance data for each fire pump for fire fighting vehicles and fire hose data, and compare with field situation data to select a fire pump for fire fighting vehicles for each situation Fire pump selection device. According to claim 1,
The instructions stored in the memory are
By applying the friction coefficient for each fire hose to the performance data for each fire pump for fire fighting vehicles, the pressure drop according to the connection and quantity of additional fire hoses that are additionally connected, and the pressure drop according to the number of connections and connections of the Y-connection port, the waterproof pressure is applied. and a fire pump selection device for a fire fighting vehicle including a command for calculating a waterproof flow rate. According to claim 1,
The field situation data includes a required waterproofing pressure, a required waterproofing flow rate, a required number of fire hoses, and a required fire hose number,
The instructions stored in the memory are
Fire pump for a fire fighting vehicle comprising a command to select a fire pump for a fire fighting vehicle that satisfies the required waterproof pressure condition and the required waterproof flow rate condition according to the required number of fire hoses and the required fire hose players as the fire pump for each situation selection device. According to claim 1,
The instructions stored in the memory are
Receives a measurement value of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle, and analyzes the performance of the fire pump for the fire fighting vehicle using the input measurement value, the reference value, and the tolerance to generate performance data for each fire pump for the fire fighting vehicle Fire pump selection device for a fire fighting vehicle including a command to. 5. The method of claim 4,
The measured value is a pump characteristic curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle,
The reference value is a reference curve of the discharge pressure according to the discharge amount of the fire pump for a fire fighting vehicle,
The instructions stored in the memory are
It is determined whether the pump characteristic curve is within the tolerance of the reference curve by adding the unit discharge amount to the initial discharge amount, and when the difference between the current discharge amount and the measured discharge pressure value at the next discharge amount is equal to or greater than the first threshold value, the added unit discharge amount Fire pump selection device for fire fighting vehicles, including a command to reduce in half.

Images