A method for checking the compliance of an indoor hydrant arrangement

Abstract

The present application relates to a kind of indoor fire hydrant arrangement compliance inspection method, comprising the following steps: determining the protection radius of indoor fire hydrant;Current BIM fire model is obtained, and the fire hydrant position point and room area are identified accordingly;Determine whether the identified fire hydrant position point is within the scope of the identified room area, and the number of effective fire hydrants is determined according to the judgment result, and the total number of effective fire hydrants is further obtained;Determine whether the total number of effective fire hydrants is greater than or equal to the preset specification threshold, and output the corresponding test result according to the judgment result, and mark the room area accordingly. Compared with the prior art, the present application can automatically, efficiently, comprehensively and accurately test the compliance of indoor fire hydrant arrangement, improve the test efficiency and avoid omissions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of BIM fire-fighting design, and particularly to an indoor fire hydrant arrangement compliance inspection method. BACKGROUND

[0002] The indoor fire hydrant is an interface with a valve for supplying water from the indoor pipe network to the fire scene, and is an indoor fixed fire-fighting facility for factories, warehouses, high-rise buildings, public buildings, ships, etc., and is usually installed in a fire hydrant box and used in conjunction with fire hoses and water guns and other equipment. In recent years, BIM has been increasingly widely applied in fire-fighting installation and management engineering, and many successful cases of combination of BIM and fire-fighting design have appeared.

[0003] In fire-fighting water design, the most common indoor fire-fighting system is the fire hydrant system. Currently, in conventional projects, designers usually inspect whether the arrangement of fire hydrants in each area of the building meets the specification requirements by manually measuring the distance. Since the designer needs to review each fire hydrant for compliance with the specification requirements, this process often takes a lot of time and effort for the designer, and there is a risk of missing a fire hydrant or a small area. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art and provide an indoor fire hydrant arrangement compliance inspection method that can automatically, efficiently, comprehensively and accurately inspect the indoor fire hydrant arrangement compliance, improve the inspection efficiency and avoid missing problems.

[0005] The purpose of the present application can be achieved by the following technical solution: an indoor fire hydrant arrangement compliance inspection method, comprising the following steps:

[0006] S1, determining the protection radius of the indoor fire hydrant;

[0007] S2, obtaining a current BIM fire-fighting model and identifying fire hydrant position points and room areas based on the BIM fire-fighting model;

[0008] S3, determining whether the identified fire hydrant position points are within the identified room area range, and determining the number of effective fire hydrants according to the determination result, and further obtaining the total number of effective fire hydrants;

[0009] S4, determining whether the total number of effective fire hydrants is greater than or equal to a preset specification threshold, outputting a corresponding inspection result according to the determination result, and marking the room area accordingly.

[0010] Further, the step S1 specifically comprises the following process:

[0011] S11. Obtain the fire hose bending reduction coefficient K3 and the fire hose length L. d , length S of the solid water jet from the water gun k The corresponding data;

[0012] S12. Based on the data obtained in step S11, calculate and determine the protection radius of the indoor fire hydrant.

[0013] Furthermore, the protection radius of the fire hydrant in step S12 is specifically as follows:

[0014] R0 = R1 + R2 = K3 × L d +L s =K3×L d +K s ×S k

[0015] Where R0 is the protection radius of the fire hydrant, R1 is the length of the fire hose after bending and damage, R2 is the projected length of the solid water jet from the fire nozzle on the plane, and K s This is the projection coefficient of the water gun tilt angle.

[0016] Furthermore, the water gun tilt angle projection coefficient is specifically calculated based on a water gun tilt angle of 45°, therefore K s The value is 0.71.

[0017] Furthermore, step S3 specifically includes the following steps:

[0018] S31. Determine whether the identified fire hydrant location is within the identified room area. If yes, proceed to step S32; otherwise, proceed to step S33.

[0019] S32. Draw a circular area with the fire hydrant location as the center and the fire hydrant's protection radius as the radius. Determine whether the circular area can completely cover the room area. If so, count the fire hydrant in the number of effective fire hydrants; otherwise, do not count it in the number of effective fire hydrants.

[0020] S33. Starting from the room evacuation door, plan the walking broken line path of the fire hydrant hose, and calculate the length of the walking broken line path. Determine whether the length of the walking broken line path is less than or equal to the protection radius of the fire hydrant. If it is, then the fire hydrant is counted in the number of effective fire hydrants; otherwise, it is not counted in the number of effective fire hydrants.

[0021] S34. Add the number of effective fire hydrants accumulated in step S32 to the number of effective fire hydrants accumulated in step S33 to obtain the total number of effective fire hydrants.

[0022] Furthermore, the walking path of the fire hydrant hose in step S33 includes the path from the room evacuation door to the point inside the room furthest from the evacuation door, and the path from the room evacuation door to the location of the fire hydrant outside the room.

[0023] Furthermore, step S33 specifically includes the following steps:

[0024] S331. Identify the room evacuation doors based on the acquired BIM fire protection model;

[0025] S332. Starting from the identified room evacuation door, traverse into the room to find the point farthest from the evacuation door, and record the distance between the room evacuation door and the farthest point as L1.

[0026] Starting from the identified room evacuation door, traverse outwards to find the fire hydrant location and record the distance between the room evacuation door and the fire hydrant location as L2.

[0027] S333. The length of the walking polyline path is calculated as: L = L1 + L2;

[0028] S334. Determine whether L is less than or equal to the protection radius of the fire hydrant. If the determination is yes, then the fire hydrant shall be counted in the number of effective fire hydrants; otherwise, it shall not be counted in the number of effective fire hydrants.

[0029] Furthermore, step S4 specifically involves filling in different colors to mark the room area accordingly.

[0030] Furthermore, in step S4, if the total number of effective fire hydrants is greater than or equal to a preset standard threshold, then the fire hydrant layout in the current room area is determined to be compliant, and the room area is filled with the first color.

[0031] Otherwise, the fire hydrant layout in the current room area is deemed non-compliant, and the room area is filled with the second color.

[0032] Furthermore, the preset standard threshold in step S4 is specifically 2.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] I. This invention pre-determines the protection radius of indoor fire hydrants; then identifies the fire hydrant locations and room areas based on the BIM fire protection model; by determining whether the identified fire hydrant locations are within the identified room area, the total number of effective fire hydrants is determined; finally, by determining whether the total number of effective fire hydrants is greater than or equal to a preset standard threshold, the corresponding inspection result is output. This eliminates the need for users to manually inspect the protection range of each fire hydrant individually, greatly saving inspection time, improving inspection efficiency, and ensuring that the entire room area is inspected, avoiding oversights that can occur during manual inspection.

[0035] Second, this invention determines whether the identified fire hydrant location is within the identified room area and determines the corresponding number of effective fire hydrants based on different determination results, and then obtains the total number of effective fire hydrants. This not only ensures the comprehensiveness of the effective fire hydrant count, but also ensures the accuracy of the effective fire hydrant count.

[0036] Third, in this invention, when the fire hydrant location is not within the room area, the evacuation door of the room is identified, and the fire hydrant hose travels inward and outward from the evacuation door as the starting point to plan the travel path of the fire hydrant hose. The length of the travel path is then compared with the protection radius of the fire hydrant, so as to accurately and comprehensively determine the number of effective fire hydrants when the fire hydrant location is not within the room area. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the method flow of the present invention;

[0038] Figure 2 This is a schematic diagram illustrating the application process of an example.

[0039] Figure 3 This is a schematic diagram of the user interface designed in the embodiment;

[0040] Figure 4 This is a schematic diagram of the test results in the example. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] Example

[0043] like Figure 1 As shown, a method for inspecting the compliance of indoor fire hydrant layout includes the following steps:

[0044] S1. Determine the protection radius of indoor fire hydrants, specifically:

[0045] First, obtain the fire hose bending reduction factor K3 and the fire hose length L.d , length S of the solid water jet from the water gun k The corresponding data;

[0046] Then calculate and determine the protection radius of the indoor fire hydrant:

[0047] R0 = R1 + R2 = K3 × L d +L s =K3×L d +K s ×S k

[0048] In the formula, R0 is the protection radius of the fire hydrant, R1 is the length of the fire hose after bending and damage, R2 is the projected length of the solid water jet from the fire nozzle on the plane, and K s The projection coefficient for the water gun tilt angle is K. In this embodiment, the projection coefficient for the water gun tilt angle is calculated based on a water gun tilt angle of 45°. s The value is 0.71;

[0049] S2. Obtain the current BIM fire protection model and identify the location of fire hydrants and room areas accordingly;

[0050] S3. Determine whether the identified fire hydrant location is within the identified room area, and determine the number of effective fire hydrants based on the determination result, and further obtain the total number of effective fire hydrants.

[0051] In step S3, the specific process includes:

[0052] S31. Determine whether the identified fire hydrant location is within the identified room area. If yes, proceed to step S32; otherwise, proceed to step S33.

[0053] S32. Draw a circular area with the fire hydrant location as the center and the fire hydrant's protection radius as the radius. Determine whether the circular area can completely cover the room area. If so, count the fire hydrant in the number of effective fire hydrants; otherwise, do not count it in the number of effective fire hydrants.

[0054] S33. Starting from the room evacuation door, plan the walking zigzag path of the fire hydrant hose (including the path from the room evacuation door to the point inside the room furthest from the evacuation door, and the path from the room evacuation door to the fire hydrant location point outside the room), and calculate the length of the walking zigzag path. Determine whether the length of the walking zigzag path is less than or equal to the protection radius of the fire hydrant. If the determination is yes, then the fire hydrant is counted in the number of effective fire hydrants; otherwise, it is not counted in the number of effective fire hydrants.

[0055] Specifically, step S33 includes the following steps:

[0056] S331. Identify the room evacuation doors based on the acquired BIM fire protection model;

[0057] S332. Starting from the identified room evacuation door, traverse into the room to find the point farthest from the evacuation door, and record the distance between the room evacuation door and the farthest point as L1.

[0058] Starting from the identified room evacuation door, traverse outwards to find the fire hydrant location and record the distance between the room evacuation door and the fire hydrant location as L2.

[0059] S333. The length of the walking polyline path is calculated as: L = L1 + L2;

[0060] S334. Determine whether L is less than or equal to the protection radius of the fire hydrant. If the determination is yes, then the fire hydrant shall be counted in the number of effective fire hydrants; otherwise, it shall not be counted in the number of effective fire hydrants.

[0061] S34. Add the number of effective fire hydrants accumulated in step S32 to the number of effective fire hydrants accumulated in step S33 to obtain the total number of effective fire hydrants;

[0062] S4. Determine whether the total number of effective fire hydrants is greater than or equal to the preset standard threshold. Output the corresponding inspection result based on the determination result and mark the room area accordingly (in this embodiment, different colors are used to mark the room area accordingly). Specifically:

[0063] If the total number of effective fire hydrants is greater than or equal to the preset standard threshold, the fire hydrant layout in the current room area is deemed compliant, and the room area is filled with the first color.

[0064] Otherwise, the fire hydrant layout in the current room area is deemed non-compliant, and the room area is filled with the second color.

[0065] This embodiment applies the above-described technical solution, such as Figure 2 As shown, the main contents include:

[0066] 1. Indoor fire hydrant specifications: According to the Technical Specification for Fire Water Supply and Fire Hydrant System GB50974-2014, the layout of indoor fire hydrants should meet the requirement that two fire hoses on the same plane can simultaneously reach any part of the fire hydrant.

[0067] 2. The protection radius of indoor fire hydrants shall be calculated according to the following formula:

[0068] R0 = K3 × L d +L s =K3×L d +0.71×S k

[0069] Where: R0—fire hydrant protection radius, m;

[0070] K3—Fire hose bend reduction coefficient, taken as 0.8 to 0.9 depending on the number of bends in the fire hose;

[0071] L d — Length of fire hose, in meters;

[0072] L s —The projected length of the solid water jet from the water gun onto the plane, calculated assuming a water gun tilt angle of 45°, is taken as 0.71 × S. k ,m;

[0073] S k —Length of the water jet from the water gun, in meters.

[0074] 3. After obtaining the above fire hydrant equipment parameters, the protection radius R0 of the fire hydrant can be obtained;

[0075] Next, the location of fire hydrants is identified, and the building floor layout (i.e., room areas) is obtained;

[0076] Next, determine whether the fire hydrant is located within the room area. Based on the determination result, there are two calculation methods:

[0077] 3.1) When the fire hydrant is not within the area, plan the walking broken line path of the fire hydrant hose through the evacuation door point, calculate the length L of the path, compare the path length L with the radius R0, and if L≤R0, the fire hydrant protection range can cover the room area. Record the effective number of fire hydrants and record the cumulative number as A.

[0078] 3.4) When the fire hydrant is within the area, the fire hose of the fire hydrant can be considered as a straight line. With the fire hydrant point as the center and R0 as the radius, draw a circular area plane. Determine whether the circular area plane completely covers the room area being inspected. If it can cover the area, it is counted as an effective fire hydrant. The cumulative number is recorded as B.

[0079] Finally, the counts and standard values ​​are compared, and the inspection results are issued. When the total number of effective fire hydrants A+B ≥ 2, it indicates that the fire hydrant design of the area meets the standard requirements, and the area is filled in green. When the total number of effective fire hydrants A+B < 2, it indicates that the fire hydrant design of the area does not meet the standard requirements, and the area is filled in red.

[0080] Furthermore, this embodiment designs corresponding user operation software based on the above technical solution, and the interface is illustrated as follows: Figure 3 As shown, in actual use, users only need to input the parameters of the fire hydrant box equipment selected for the actual project (i.e., the fire hose bending reduction coefficient K3, the fire hose length L) into the interface. dThe full length S of the water jet from the water gun k The design values ​​of these three parameters can be used to automatically check whether the fire hydrant layout on the current building floor plan meets the code requirements, and obtain the inspection results for the entire building floor plan (e.g., Figure 4 As shown, the inspection results are indicated by color-coded areas to distinguish between compliant and non-compliant building areas (green areas represent compliant areas, and red areas represent non-compliant areas). Users can then redesign non-compliant areas and conduct a quick re-inspection to ensure the fire hydrant system meets design specifications.

[0081] In summary, this technical solution proposes a method for quickly and effectively checking whether the layout of indoor fire hydrants meets the requirements of national standards and specifications. Users do not need to manually check the protection range of each fire hydrant one by one, which effectively saves time. Moreover, the inspection results cover the entire area and there will be no omissions due to human inspection.

Claims

1. A method for inspecting the compliance of indoor fire hydrant layout, characterized in that, Includes the following steps: S1. Determine the protection radius of indoor fire hydrants; S2. Obtain the current BIM fire protection model and identify the location of fire hydrants and room areas accordingly; S3. Determine whether the identified fire hydrant location is within the identified room area, and determine the number of effective fire hydrants based on the determination result, and further obtain the total number of effective fire hydrants. S4. Determine whether the total number of effective fire hydrants is greater than or equal to the preset standard threshold, output the corresponding test results based on the judgment results, and mark the room area accordingly. Step S3 specifically includes the following steps: S31. Determine whether the identified fire hydrant location is within the identified room area. If yes, proceed to step S32; otherwise, proceed to step S33. S32. Draw a circular area with the fire hydrant location as the center and the fire hydrant's protection radius as the radius. Determine whether the circular area can completely cover the room area. If so, count the fire hydrant in the number of effective fire hydrants; otherwise, do not count it in the number of effective fire hydrants. S33. Starting from the room evacuation door, plan the walking broken line path of the fire hydrant hose, and calculate the length of the walking broken line path. Determine whether the length of the walking broken line path is less than or equal to the protection radius of the fire hydrant. If it is, then the fire hydrant is counted in the number of effective fire hydrants; otherwise, it is not counted in the number of effective fire hydrants. S34. Add the number of effective fire hydrants accumulated in step S32 to the number of effective fire hydrants accumulated in step S33 to obtain the total number of effective fire hydrants; In step S33, the walking path of the fire hydrant hose includes the path from the room evacuation door to the point inside the room furthest from the evacuation door, and the path from the room evacuation door to the location of the fire hydrant outside the room. Step S33 specifically includes the following steps: S331. Identify the room evacuation doors based on the acquired BIM fire protection model; S332. Starting from the identified room evacuation door, traverse into the room to find the point farthest from the evacuation door, and record the distance between the room evacuation door and the farthest point as L1. Starting from the identified room evacuation door, traverse outwards to find the fire hydrant location and record the distance between the room evacuation door and the fire hydrant location as L2. S333. The length of the walking polyline path is calculated as: L = L1 + L2; S334. Determine whether L is less than or equal to the protection radius of the fire hydrant. If the determination is yes, then the fire hydrant shall be counted in the number of effective fire hydrants; otherwise, it shall not be counted in the number of effective fire hydrants.

2. The method for verifying the compliance of indoor fire hydrant layout according to claim 1, characterized in that, Step S1 specifically includes the following process: S11. Obtain the fire hose bending reduction coefficient K3 and the fire hose length L. d , length S of the solid water jet from the water gun k The corresponding data; S12. Based on the data obtained in step S11, calculate and determine the protection radius of the indoor fire hydrant.

3. The method for verifying the compliance of indoor fire hydrant layout according to claim 2, characterized in that, The specific protection radius of the fire hydrant in step S12 is as follows: R0=R1+R2=K3×L d +L s =K3×L d +K s ×S k Where R0 is the protection radius of the fire hydrant, R1 is the length of the fire hose after bending and damage, R2 is the projected length of the solid water jet from the fire nozzle on the plane, and K s This is the projection coefficient of the water gun tilt angle.

4. The method for verifying the compliance of indoor fire hydrant layout according to claim 3, characterized in that, The projection coefficient of the water gun tilt angle is specifically calculated based on a water gun tilt angle of 45°, therefore K s The value is 0.

71.

5. The method for verifying the compliance of indoor fire hydrant layout according to claim 1, characterized in that, Step S4 specifically involves filling in different colors to mark the room area accordingly.

6. The method for verifying the compliance of indoor fire hydrant layout according to claim 5, characterized in that, In step S4, if the total number of effective fire hydrants is greater than or equal to the preset standard threshold, the fire hydrant layout in the current room area is determined to be compliant, and the room area is filled with the first color. Otherwise, the fire hydrant layout in the current room area is deemed non-compliant, and the room area is filled with the second color.

7. A method for verifying the compliance of indoor fire hydrant layout according to any one of claims 1 to 6, characterized in that, The preset standard threshold in step S4 is specifically 2.

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