Application device to support applications for waterworks construction.

Abstract

This invention provides an application device that supports the application process for waterworks construction, thereby reducing the workload for both the construction company and the person in charge of the relevant department. [Solution] In the support system 100, the application device 200 that supports applications related to waterworks construction includes an application information acquisition unit 211 that acquires information on matters to be described in the application, an application information setting unit 212 that sets the application information necessary for the application based on the information acquired by the application information acquisition unit 211, an application storage unit 220 that stores information on the review criteria, a pre-examination unit 213 that performs a pre-examination before submitting the application based on the information on the review criteria stored in the application storage unit 220 and the application information set by the application information setting unit 212, and an application information output unit 214 that outputs the application information set by the application information setting unit 212.

Description

[Technical Field] , , , ,

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[0001] The present invention relates to an application support system for water supply device construction work. [Background Art]

[0002] When performing new construction work, renovation work, removal work, repair work of water supply devices, and prior consultation with water utility operators before construction (hereinafter sometimes referred to as "construction work of water supply devices, etc."), it is sometimes necessary to apply for the construction work of water supply devices, etc. to the responsible department of water utility operators such as local governments (hereinafter sometimes referred to as "responsible department"). Specifically, when a designated water supply device construction contractor, etc. (hereinafter sometimes referred to as "construction contractor") performs construction work of water supply devices, etc., before performing the construction work, etc., documents necessary for the application related to the construction work of water supply devices, etc. are created, and the documents necessary for the application are brought to obtain permission for the construction work of water supply devices, etc., and the construction work, etc. is applied to the responsible department. In addition, the documents necessary for the application may include documents necessary for prior consultation.

[0003] The responsible department visually examines the documents necessary for the application to obtain permission for the construction work of water supply devices, etc., conducts a review on whether it meets the passing criteria of the water utility operator, and notifies the construction contractor of the review result.

[0004] If the construction contractor can obtain permission for the construction based on the review result of the responsible department, the construction work can be entrusted to the construction company. However, if the permission for the construction cannot be obtained, it is necessary to correct the application documents related to the construction work of water supply devices, etc., bring the corrected documents to the responsible department, and apply for the construction work, etc. again. Examples of the documents necessary for the application include an application form for new construction work of water supply devices, an application form for construction of new water supply devices, an application form for design review of water supply device construction work, etc. Patent Document 1 discloses a system that utilizes BIM (Building Information Modeling) data for the design of water supply pipes in order to support the design of water supply pipes. [Prior Art Documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-138509 [Overview of the project] [Problems that the invention aims to solve]

[0006] According to the system described in Patent Document 1 above, water supply piping can be designed using BIM data. However, when a construction company applies for water supply equipment construction, etc., they are required to bring printed documents containing design drawings and calculations to the relevant department. Furthermore, the person in charge of the relevant department had to visually review the documents submitted by the construction company. As a result, the relevant department faced the problem of inefficiency, as it was time-consuming to check, for example, hydraulic calculation reports submitted on paper.

[0007] This invention has been made in view of these circumstances, and its purpose is to provide an application support system for water supply system construction, etc., which can reduce the workload involved in the application process for water supply system construction, etc., for both construction companies and the personnel in charge of the relevant departments. [Means for solving the problem]

[0008] To solve the above-mentioned problems, an application device for assisting with applications related to waterworks construction according to one embodiment of the present invention comprises: an information acquisition unit that acquires information relating to matters to be described in the application; an application information setting unit that sets application information necessary for the application based on the information acquired by the information acquisition unit; an application storage unit that stores information relating to the review criteria; a pre-examination unit that performs a pre-examination before submitting the application based on the information relating to the review criteria stored in the application storage unit and the application information set by the application information setting unit; and an application information output unit that outputs the application information set by the application information setting unit. [Effects of the Invention]

[0009] This invention makes it possible to reduce the effort involved in applications and examinations related to the construction of water supply systems. [Brief explanation of the drawing]

[0010] [Figure 1] This is a diagram showing an example configuration of the support system 100 according to the first embodiment. [Figure 2] This figure shows an example configuration of the support system 100 according to the first embodiment and other devices. [Figure 3] This is a hydraulic gradient diagram in the first embodiment. [Figure 4] This is an example of a hydraulic calculation sheet for determining the flow rate in the first embodiment. [Figure 5] This is an example of a hydraulic calculation sheet for determining the total head in the first embodiment. [Figure 6] This is an example of a hydraulic calculation sheet for determining friction and pressure loss in the primary water supply pipe in the first embodiment. [Figure 7] This is an isometric view of the water supply equipment in the first embodiment. [Figure 8] This is an example of a hydraulic calculation sheet for determining the friction and pressure loss of the secondary water supply pipe in the first embodiment. [Figure 9] This is an example of a pressure booster specification sheet. [Figure 10] This is a flowchart showing the flow of the support system 100 according to the first embodiment. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0012] (First embodiment) (Support system) FIG. 1 is a configuration diagram showing a configuration example of a support system 100 according to a first embodiment. The support system 100 includes an application device 200 and a review device 300. The application device 200 and the review device 300 are communicably connected to each other via a communication network NW, and are configured to be able to exchange data such as application data related to construction work of a water supply device and the result of review by the review device 300. The application data is preferably BIM data described later, but is not limited thereto.

[0013] FIG. 2 shows an example in which a plurality of application devices 200 and a plurality of review devices 300 are connected via a communication network NW. In addition to the application device 200 and the review device 300, a construction contractor 205 who performs water supply work and a server device 150 may be connected to the network NW. Hereinafter, each component of the support system 100 will be described.

[0014] (BIM) The design of the water supply is preferably performed by Building Information Modeling (hereinafter referred to as "BIM"). By performing the design of the water supply by BIM and making an application for construction work of a water supply device or the like using data by BIM (hereinafter referred to as "BIM data"), the application for construction work of a water supply device or the like and the review of the application can be easily performed.

[0015] (Application Device 200) The application device 200 is an application-side device for a construction contractor to make an application related to construction work of a water supply device or the like. Here, examples of the application related to construction work of a water supply device or the like include an application form for new construction work of a water supply device, an application form for construction of new construction work of a water supply device, an application form for design review of water supply device construction, and the like. In addition, the application includes an application request for a water pressure survey, etc., which may be performed before the application for construction work of a water supply device, and applications and confirmations associated with the construction work of a water supply device. Note that the name of the application for construction work of a water supply device or the like may vary depending on the local government or the water supply business operator, or the content of the required application may vary. The application for construction work of a water supply device or the like to which this embodiment is applied is not limited to the exemplified applications and contents.

[0016] The application device 200 is typically a personal computer, but may also be a portable information terminal (PDA) such as a smartphone. The application device 200 may be any device that enables a construction contractor to submit an application related to the construction of a water supply device using BIM data.

[0017] The application device 200 includes an application communication unit 230 and is configured to be connected to the review device 300 via a communication network NW such as the Internet. The application device 200 includes an application control unit 210, an application input unit 260, an application storage unit 220, an application display unit 240, and an application power supply 250. The application control unit 210 includes a preliminary review unit 213, an application information acquisition unit 211, an application information setting unit 212, an application information output unit 214, and a review result input unit 215.

[0018] (Application Input Unit 260) The application input unit 260 is a device or terminal for inputting data and the like into the application device 200. The application input unit 260 may be a device that can be manually input by a construction contractor who submits an application related to the construction of a water supply device, such as a keyboard, a mouse, or a touch panel. Also, the application input unit 260 may be configured to be inputable by a recording medium or communication. Examples of the recording medium include an optical disk (e.g., CD-ROM, DVD-ROM) and a semiconductor memory (e.g., USB flash drive, memory card). Note that the application input unit 260 may be shared with the application communication unit 230 described later.

[0019] In the application device 200, data such as a program of the support system, design data related to the construction of the water supply device, review criteria for review by the preliminary review unit 213 described later, and data necessary for the application are input by the application input unit 260. Examples of the input data include data for performing hydraulic calculations and BIM data of a building related to water supply construction. Part or all of the input data is configured to be stored in the application storage unit 220 described later.

[0020] (Application Storage Unit 220) The application storage unit 220 can store data entered from the application input unit 260 and data acquired by the application communication unit 230. Furthermore, the application storage unit 220 stores data processing programs for operating the application control unit 210, which controls the application device 200. Multiple data processing programs may be stored depending on the type of application, such as for water supply installation work, and the examination device 300. The application storage unit 220 may be a server device 150 connected to the application device 200.

[0021] (Application information acquisition department 211) The application information acquisition unit 211 acquires the information to be included in the application for water supply equipment construction, etc., from the application storage unit 220 or the review device 300 via the network NW. The application device 200 can use the application information acquired by the application information acquisition unit 211 to acquire data necessary for the application for water supply equipment construction, etc., such as BIM data, data acquired from other databases, or manual input. The application information acquisition unit 211 allows for confirmation of the data necessary for the application for water supply equipment construction, etc., and ensures that the necessary information for the application for water supply equipment construction, etc., is prepared reliably.

[0022] (Application information setting section 212) The application information setting unit 212 sets information for applications such as water supply system construction based on the application information acquired by the application information acquisition unit 211. In order to apply for water supply system construction, it acquires information to be set from the application storage unit 220, acquires information to be set from the application input unit 260, and performs calculations such as hydraulic calculations.

[0023] (Pre-screening Section 213) The pre-screening unit 213 performs a pre-screening when all the information necessary for the application for water supply installation work, etc., acquired by the application information acquisition unit 211 has been set by the application information setting unit 212.

[0024] The pre-screening is a preliminary review conducted before the application device 200 submits an application to the review device 300 for construction work on water supply equipment. The application storage unit 220 stores laws and data (hereinafter referred to as "review criteria") for conducting the pre-screening, and the pre-screening unit 213 performs the pre-screening by referring to the data set in the application information setting unit 212 and the review criteria. Depending on the results of the pre-screening, the pre-screening unit 213 outputs the application information to the application information output unit 214 or resets the data again in the application information setting unit 212.

[0025] (Application information output unit 214) The application information output unit 214 outputs application data related to water supply equipment construction, etc., output from the pre-examination unit 213, as well as data necessary for other applications related to water supply equipment construction, etc., to the examination device 300 via the application communication unit 230.

[0026] (Application Communications Department 230) The application communication unit 230 is provided to connect the application device 200 and the examination device 300 via a network NW. The network NW may be an internet line, a telephone line, or any other publicly known line.

[0027] (Application display section 240) The application device 200 includes an application display unit 240. The application display unit 240 displays the details of the operation of the application device 200. The application display unit 240 is typically a display, but may also be an audio device. The application display unit 240 is configured to display the operation of the application device 200 to the contractor using images and sounds.

[0028] (Application power supply 250) The application device 200 is equipped with an application power supply 250. The application power supply 250 is the power source for operating the application device 200.

[0029] (Examination device 300) The review device 300 is a review-side device used by water utilities to review applications from construction companies regarding water supply equipment construction, etc. The review device 300 is equipped with a review communication unit 330 and is configured to be connected to the application device 200 via a network NW.

[0030] The review device 300 is typically a personal computer, but may also be a personal digital assistant (PDA) such as a smartphone. The review device 300 should be any device that allows the relevant department of a water utility to review applications from construction contractors regarding water supply equipment construction, etc.

[0031] The examination device 300 includes an examination control unit 310, an examination input unit 360, an examination storage unit 320, an examination communication unit 330, an examination display unit 340, and an examination power supply 350. The examination control unit 310 includes an examination unit 311 and an examination result output unit 312.

[0032] (Review input unit 360) The review input unit 360 is a device or terminal for inputting data, etc., into the review device 300. The review input unit 360 may be a device that allows manual input by a person in charge of the department responsible for reviewing applications related to water supply equipment construction, etc., using a keyboard, mouse, touch panel, etc. Alternatively, the review input unit 360 may be able to accept input via a recording medium or communication. Examples of recording media include optical discs (e.g., CD-ROM, DVD-ROM) and semiconductor memory (e.g., USB flash drive, memory card). The review input unit 360 may also be used in conjunction with the review communication unit 330.

[0033] The inspection device 300 receives data necessary for the inspection, such as the inspection program, design data related to the construction of the water supply equipment, and inspection criteria, via the inspection input unit 360. Some or all of the input data is stored in the inspection storage unit 320, which will be described later.

[0034] (Review result input section 215) The examination result input unit 215 can receive the examination results from the examination device 300 via the application communication unit 230. The application device 200 may be configured to perform hydraulic calculations again or to instruct the construction company to proceed with construction based on the examination results received by the examination result input unit 215.

[0035] (Review Department 311) The review unit 311 is a device that reviews applications for water supply equipment construction, etc., from the application device 200. The review unit 311 reviews the application by referring to the application content and data such as review criteria stored in the review memory unit. The application content includes hydraulic calculations and other documents and data necessary for the review. The application content varies depending on the water utility company. Here, it is desirable that the application data and review criteria data be BIM data or data equivalent to BIM data. By designing water supply construction using a BIM model and using BIM data for applications and reviews related to water supply equipment construction, the administrative burden on both the applicant and the reviewing side can be reduced.

[0036] (Review memory unit 320) The review storage unit 320 is a device that stores information for the review unit 311 of the review device 300 to perform the review. The review storage unit 320 stores data on water supply laws and regulations, such as water supply laws, water supply enforcement ordinances, and local ordinances, as well as other data necessary for applications related to water supply facility construction, etc. It may also store the contents of past applications related to water supply facility construction, etc., and the results of past reviews. Preferably, the data to be stored should be in BIM data format.

[0037] The examination storage unit 320 stores data processing programs for the operation of the examination control unit 310. The data stored in the examination storage unit 320 may be configured to be updated as needed via the examination communication unit 330.

[0038] (Examination result output unit 312) The examination result output unit 312 outputs the results of the examination conducted by the examination unit 311 for applications related to the construction of water supply facilities, etc. The output of the examination result output unit may be directly notified to the application device 200 via the examination communication unit 330, or the examination results may be displayed on the examination display unit 340, allowing the person in charge to make the final examination of the application related to the construction of water supply facilities, etc.

[0039] (Review and Communications Department 330) The examination communication unit 330 is provided to connect the application device 200 and the examination device 300 via a network NW. The network NW may be an internet line, a telephone line, or any other publicly known line.

[0040] (Test power supply 350) The inspection device 300 is equipped with an inspection power supply 350. The inspection power supply 350 is the power source for operating the inspection device 300. An uninterruptible power supply is preferable so that it can operate even in the event of a disaster.

[0041] (hydraulic calculation) When applying for water supply system construction work, a hydraulic calculation report may be required depending on the nature of the work. Water utilities primarily request hydraulic calculation reports to verify the following three points. Note that the requirements for submitting hydraulic calculation reports and the content of the hydraulic calculations may vary depending on the water utility. 1. Confirm whether the diameter of the water meter (so-called "water meter") is appropriate for the planned water usage. 2. Confirm that the water head of the water distribution pipe branched from the water supply system is greater than the required water head of the water supply system. 3. Confirm that the water flow rate of the water supply system does not exceed 2.0 m / sec.

[0042] (1. Confirmation of whether the diameter of the water meter (so-called "water meter") is appropriate for the planned water usage.) The range of flow rate that a water meter can measure varies depending on its type and structure. Furthermore, the Measurement Law specifies the measurement range according to the type of water meter. However, the measurement range specified in the Measurement Law is merely the limit of measurement. To ensure the durability of the water meter and accurate measurement, it is necessary to select an appropriate water meter by referring to the criteria for selecting the diameter of the water meter based on the flow rate. For these reasons, water utilities determine the appropriate flow rate range according to the type and diameter of the water meter. Water meters come in various types, including tangential flow impeller type, axial flow impeller type, and electromagnetic type, and are selected according to the flow rate and pipe diameter.

[0043] (Planned water usage) In direct water supply systems, the planned water usage must be set to reflect actual usage, taking into full consideration the proportion of simultaneous use of water supply equipment. The planned water usage forms the basis for planning the main specifications of the water supply system, such as the diameter of the water supply pipes and the capacity of the water storage tank. It is determined after considering the building's purpose, water usage, number of users, and the number of water taps. When calculating the planned water usage, it is necessary to select a method that is appropriate to actual usage, taking into account the characteristics of various calculation elements.

[0044] The planned water usage is determined from the simultaneous water usage. Simultaneous water usage refers to the amount of water flowing through the water supply system when several water supply devices installed within the water supply system subject to construction work are used simultaneously. In addition, in water supply construction, the capacity of the water storage tank may be determined based on the planned daily water usage.

[0045] (Planned water usage for direct-connection pressure boosting water supply) When implementing a direct-connection pressure-boosting water supply system, it is necessary to properly set the simultaneous water usage volume in order to determine the appropriate pipe diameter and the correct capacity of the pressure boosting device. Incorrect calculation of simultaneous water usage volume can lead to problems such as the introduction of excessive equipment, inefficient energy use, and water shortages.

[0046] When calculating the amount of water used simultaneously, there are several methods, including one that considers the discharge volume of each type of water supply equipment and its simultaneous use rate, one that uses a calculation formula to predict the amount of water used simultaneously based on the number of residents, and one that refers to the Air Conditioning and Sanitary Engineering Handbook. It is necessary to appropriately select a method that is appropriate to the actual usage of the water supply equipment.

[0047] (2. Confirmation that the water head of the water distribution pipe branched from the water supply system is greater than the required water head of the water supply system) If the water head in the distribution pipe branched from the water supply system is not greater than the required water head of the water supply system, no water will come out of the system. The required water head of the water supply system must be calculated by considering the rise height of the water supply system (the difference between the height at which the water supply system is installed and the height at which the drainage pipe is installed), the head loss when water flows through the water supply pipe and other equipment (valves, etc.), and ensuring a certain margin of head.

[0048] Head loss can be attributed to various factors, including head loss at the pipe inlet and outlet, friction within the pipe, water meters and water supply equipment, and bends, branches, and changes in cross-sectional area of ​​the pipe. Of these, the main ones are friction head loss and head loss due to various water supply equipment. For pipes with a diameter of 50 mm or less, the friction head loss can be calculated using the Weston formula, and for pipes with a diameter of 75 mm or more, the Hazen-Williams formula can be used.

[0049] Head loss due to various water supply equipment is converted to equivalent straight pipe length. Equivalent straight pipe length refers to the length of a straight pipe that represents how many meters of straight pipe of the same diameter the head loss due to faucets, water meters, pipe joints, etc., is equivalent to.

[0050] (3. Confirmation that the water flow rate of the water supply system does not exceed 2.0 m / sec) Generally, the flow velocity of a water supply device is stipulated by water supply utilities not to exceed 2.0 m / s. For example, if a water faucet is suddenly closed, the water flow may suddenly stop, causing the pressure inside the water supply pipe to rise rapidly. When the pressure inside the water supply pipe rises rapidly, a water hammer phenomenon (noise and damage to the water supply pipe) may occur. To prevent such a phenomenon, it is necessary to ensure that the flow velocity does not become too high during the design stage of the water supply device. It is preferable to create a hydraulic calculation document that clearly shows that the flow velocity of the water supply device is within a predetermined range.

[0051] (Example of hydraulic calculation) As described above, it can be said that hydraulic calculation is one of the important items in the design of water supply facilities and applications for water supply device construction, etc. The following shows an example of hydraulic calculation for the design of a booster device in a 9-story apartment building with 19 households, along with an example of a hydraulic calculation document, an example of a dynamic water gradient diagram, and an example of an isometric diagram. Figure 3 is a dynamic water gradient diagram in the directly connected booster water supply system for the corresponding equipment, which can be easily created based on BIM data, enabling designers, etc. to easily grasp the overview of the equipment visually. (1. Calculation of water supply volume) In this calculation example, an example based on the formula for predicting the simultaneous water consumption from the number of households is shown. Note that the calculation of the water supply volume can also be performed by other methods, and this calculation example does not specify the scope of the rights of the present invention. Figure 4 (Hydraulic calculation document 1) shows an example of the calculation of the water supply volume in the hydraulic calculation document.

[0052] The formula for predicting the simultaneous water consumption when the number of households N is 10 < N < 600 is as follows. Q: Simultaneous water consumption (L / min), N: Number of households Q = 42N^0.67 (L / min) Note that the formula can be appropriately referred to from "Standard Plan and Construction Method of Water Supply Devices" (Ministry of Health, Labour and Welfare Water Supply Device Database), etc. In the method of calculating the simultaneous water consumption from the "number of households", the simultaneous water consumption can be calculated simply by applying the number of households to the formula. Number of water supply households (N) = 19 Using the formula Q = 42N^0.33 (L / min), Q = 42 × 19^0.67 (L / min) = 136.6 (L / min) ≈137 (L / min) It can be calculated as follows.

[0053] (2. Calculation of total head) An example of calculating the total head of a pressure booster is shown. The total head of a pressure booster can be calculated from the pressure on the suction side (primary side) and the pressure on the discharge side (secondary side) of the pump used in the pressure booster (hereinafter also simply referred to as "the pump"). The calculation of the total head will be explained with reference to Figure 3 (Hydraulic Gradient Diagram) and Figure 5 (Hydraulic Calculation Sheet 2).

[0054] Calculation 510 for the suction side (primary side) of the pump The pressure and pressure loss at each point on the suction side of the pump in Figure 3 (hydraulic gradient diagram) are as follows:

[0055] Pa: Minimum dynamic water pressure of water distribution pipes connected to water supply construction. The minimum dynamic pressure of a water distribution pipe connected to a water supply system is defined by law (Ministerial Ordinance for Establishing Technical Standards for Water Supply Facilities) as "the minimum dynamic pressure of the water distribution pipe at the point where it branches off from the distribution pipe to the water supply pipe shall not fall below 150 kilopascals." Here, the calculated value of the minimum dynamic pressure of a water distribution pipe connected to a water supply system can be set to, for example, 15.0 m, depending on the specifications of the water utility company. Since the minimum dynamic pressure of a water distribution pipe varies depending on the water utility company, it is advisable to inquire with the water utility company before performing hydraulic calculations, and it is preferable to use this support system to inquire with the water utility company before performing hydraulic calculations.

[0056] P1s: Pressure loss due to elevation difference (pressure loss due to elevation difference between the water distribution pipe and the pressure boosting device) When water is supplied from a lower elevation to a higher elevation, pressure loss occurs due to the difference in elevation. The pressure loss due to elevation difference is determined based on the difference in vertical distance between the point where the water distribution pipe branches off to the water supply equipment and the location where the pressure boosting device is installed.

[0057] P2s: Water supply pipe friction and pressure loss (including pressure loss due to fittings and valves) Pipe friction loss refers to the friction loss that occurs when water flows through pipes, fittings, and valves. An example of a hydraulic calculation sheet for calculating pipe friction loss is shown in Figure 6 (Hydraulic Calculation Sheet 3). According to the hydraulic calculation sheet 600 shown in Figure 6,

[0058] P3: Pressure loss due to water meter Pressure loss occurs when water flows through a water meter. The relationship between the pressure loss in a water meter and the flow rate can be obtained from pre-measured data or the water meter's catalog. In this example, a water meter is not installed, and therefore no pressure loss occurs due to the water meter.

[0059] P4: Pressure loss of backflow preventer A pressure-reducing backflow preventer is installed on the suction side (primary side) of the pressure booster. The relationship between the pressure loss of the pressure-reducing preventer and the flow rate can be obtained from pre-measured data or water meter catalogs.

[0060] P0: Effective pressure on the pump suction side (input pressure to the pump) The primary side pressure of a pump, or the effective suction pressure P0, is the value obtained by subtracting the pressure loss from the minimum dynamic water pressure Pa at the point where the water distribution pipe branches off to the water supply pipe. So, P0 = Pa - (P1s + P2s + P3 + P4) It can be calculated using the following formula.

[0061] Calculation of the pump discharge side This example shows how to calculate the boost pressure required for a booster (pump) to supply water at the minimum dynamic water pressure at the end or highest point within the water supply system.

[0062] P1: Pressure loss due to elevation difference (elevation difference between the pressure booster and the highest water supply fixture) Pressure loss occurs due to the height difference between the outlet of the pressure booster and the highest water supply fixture in the water supply system. The loss is determined based on the difference in vertical distance between the outlet of the pressure booster and the highest water supply fixture in the water supply system.

[0063] P2: Water supply pipe friction and pressure loss (including pressure loss due to fittings and valves) Piping friction loss refers to the friction loss of pipes, fittings, and valves. An example of calculating piping friction loss is shown in Hydraulic Calculation Sheet 4. P5: Minimum dynamic water pressure at the end or highest point within the water supply system A certain water pressure is required for water to flow from the water supply system. Here, it is necessary to set a minimum dynamic water pressure as this predetermined water pressure.

[0064] Pout: Pressure booster outlet pressure To supply water from the highest water supply fixture in the water supply system at a predetermined minimum dynamic water pressure, the required pressure Pout at the outlet of the pressure booster can be calculated using the following formula. Pout = P1 + P2 + P5

[0065] Total head 530 (pressure boost required for the pressure booster) In order to supply water from the water distribution pipes to the highest water supply fixture in the water supply system at a predetermined minimum dynamic water pressure, it is necessary to increase the water supply pressure using a pressure booster. The required pressure booster PP (total head 530) is calculated using the following formula. PP = Pout - P0 =P1+P1S+P2+P2S+P3+P4+P5-Pa

[0066] (3. Calculation of water pipe friction and pressure loss) To calculate the effective pressure on the pump suction side of a pressure boosting device, it is necessary to calculate the friction and pressure loss in the water supply pipe. The head calculation calculates the flow rate for each section. Sections are defined each time the flow rate or pipe diameter changes. If the flow rate changes due to a branch pipe, a section is defined at that branch pipe. Even without a branch pipe, if the pipe diameter changes, the flow rate will change, so a section is defined at the point where the relationship changes. The pipe diameter is tentatively determined for each section, and the hydraulic gradient and flow velocity for that section are calculated based on the flow rate and the tentatively determined pipe diameter. For calculations, Weston's formula can be used if the pipe diameter is 50 mm or less, and Hazen-Williams' formula can be used if the pipe diameter is 75 mm or more. If the calculations show that the flow velocity exceeds a certain level, it will be necessary to increase the provisionally determined pipe diameter to reduce the flow velocity. Many water utilities require that the design ensure the flow velocity is 2.0 m / s or less.

[0067] (Calculation of total length) Head loss can be calculated by multiplying the hydraulic gradient by the total pipe length. The total pipe length is the sum of the actual straight pipe length within the section and the straight pipe equivalent length calculated from the piping elements. Figure 6 (Hydraulic Calculation Sheet 3) shows an example of the calculation of the total pipe length in the hydraulic calculation sheet.

[0068] (Calculation of the equivalent length of pipe elements) Piping elements include ball stop valves, check valves, gate valves, 90° elbows, 45° elbows, etc. The equivalent length of a straight pipe refers to the amount of head loss in a straight pipe of the same diameter that the head loss caused by the piping element corresponds to, expressed in terms of the length of the straight pipe.

[0069] (Extracting actual pipe length from isometric drawing) The actual pipe length and piping elements can be easily extracted from the hydraulic gradient diagram shown in Figure 3 and the isometric drawing shown in Figure 7. The isometric drawing can be easily created from the BIM model.

[0070] Regarding the ab interval This section explains how to calculate the total pipe length for section ab in the hydraulic gradient diagram (Figure 3) and isometric diagram (Figure 7).

[0071] Actual pipe length and piping elements in section ab From the hydraulic gradient diagram (Figure 3), it can be seen that a ball stop valve is installed in section ab 910. Furthermore, from the isometric view (Figure 7), it can be seen that the actual length of the straight pipe in section ab 810 is 2.0m (1.1m + 0.9m), the pipe diameter is 75mm, and two 90° elbows are installed.

[0072] As shown in Figure 6, the equivalent length for each piping element, such as a ball stop valve, located in section ab 610 is determined using predetermined data 670. This predetermined data 670 can be easily obtained from catalogs or other data for the piping elements in question. By summing the equivalent lengths of the piping elements located in section ab 610, the total straight pipe equivalent length 630 in section ab 610 can be calculated.

[0073] The total pipe length of 640 can be calculated by adding the actual straight pipe length of 620 in section ab (610) and the total straight pipe equivalent length of section ab (630). By multiplying the calculated total pipe length of 640 by the hydraulic gradient of 650, the head loss of 660 in section ab (610) can be calculated. Using a similar method, head loss can be calculated in other sections as well, and the feedwater friction and pressure loss on the suction side can be calculated from the head loss in all sections.

[0074] Extracting actual pipe lengths, piping elements, and calculating pressure losses from each drawing can be easily done using a BIM model.

[0075] (Calculation of water pipe friction and pressure loss) To calculate the required pressure for the pressure booster, it is necessary to calculate the friction and pressure loss in the water supply pipe on the outlet side of the pressure booster. An example of a hydraulic calculation sheet for the outlet side (Hydraulic Calculation Sheet 4) is shown in Figure 8.

[0076] The head calculation calculates the flow rate for each section. Sections are defined each time the flow rate or pipe diameter changes. If the flow rate changes due to a branch pipe, a section is defined at that branch pipe. Even without a branch pipe, if the pipe diameter changes, the flow rate will change, so a section is defined at the point where the relationship changes.

[0077] As an example of head calculation, section 820 between the 8th and 9th floors is shown. From the isometric drawing (Figure 7), it can be seen that section 820 between the 8th and 9th floors has a diameter of 25 mm, a straight pipe length of 2.86 m, and contains one tee branch. Based on the information that can be seen from the isometric drawing, hydraulic calculations can be easily performed.

[0078] The hydraulic gradient and flow velocity for each section can be calculated by first determining the pipe diameter for each section and then using the flow rate in that section and the predetermined pipe diameter. The specific calculation method is the same as the method used to calculate head loss in Hydraulic Calculation Sheet 3, so it will be omitted here.

[0079] (Determination of specifications for the pressure booster) As described above, once the pump flow rate and total head PP are calculated, the pump specifications can be determined based on these calculations. Figure 9 shows an example of a specification sheet for a pressure booster.

[0080] Operation of the support system An example of the installation of new water supply facilities using this support system will be explained with reference to the flowchart in Figure 10.

[0081] (Step S110) The application device 200 can perform design work for applications related to water supply system construction, etc. When the application device 200 submits an application for water supply system construction, etc., it determines the water utility company based on the location where the water supply system construction will be performed and communicates with the water utility company's review device 300. If multiple water utility companies are available at the location where water supply equipment construction is to be carried out, the application device 200 can select an appropriate water utility company from among the multiple water utility companies.

[0082] When the application device 200 and the review device 300 are connected, the review device 300 sends data it holds to the application device. The data sent may be data necessary for the application for water supply installation work, etc., or it may be the review criteria used by the review device when reviewing the application for water supply installation work, etc.

[0083] (Step S120) The application device 200 receives data transmitted from the review device 300. It is preferable for the application device 200 to obtain information necessary for applying for water supply facility construction, such as the minimum dynamic water pressure Pa of the water distribution pipes where the water supply facility construction is to be carried out, and review criteria, from the review device 300 before performing the hydraulic calculation. If the application device 200 does not have the data necessary for the hydraulic calculation and the data transmitted from the review device 300 does not contain the necessary data, the application device 200 can request the review device 300 to transmit the necessary data.

[0084] (Step S130) The application device 200 can perform hydraulic calculations by determining the water supply system based on the details of the water supply system construction and the minimum dynamic water pressure Pa of the water distribution pipes. Furthermore, if the results of previously calculated hydraulic calculations can be used, the hydraulic calculations can be omitted by utilizing those results.

[0085] The construction contractor uses the application input unit 260 to input information about the water supply system, including whether it is a new installation, and BIM data related to the water supply system, into the application device 200. The data entered into the application input unit 260 is stored in the application storage unit 220.

[0086] When the application information acquisition unit 211 determines from the application input unit 260 that the content of the application related to the construction of water supply facilities is the installation of new water supply facilities, it acquires the type of application data required when installing new water supply facilities from the application storage unit 220 for the water utility company to be reviewed.

[0087] If the type of information to be submitted is not stored in the application storage unit 220, the application device 200 requests the water utility operator's review device 300 via the application communication unit 230 to send to the application device 200 the type of information necessary for hydraulic calculations. The type of information returned to the application device 200 from the water utility operator's review device 300 is stored in the application storage unit 220 of the application device 200.

[0088] The application information acquisition unit 211, after confirming the contents of the hydraulic calculations necessary for the installation of a new water supply system, acquires the data necessary for the hydraulic calculations from the application storage unit 220. The application information setting unit 212 performs hydraulic calculations using the BIM data stored in the application storage unit 220. However, if it determines that the hydraulic calculations cannot be performed using only the BIM data stored in the application storage unit 220, it can display a message on the application display unit 240 prompting the construction company to input the missing data necessary for the hydraulic calculations.

[0089] (Step S140) The application device 200 undergoes a preliminary review by the preliminary review section 213 based on the results of hydraulic calculations. The preliminary review is conducted before submitting an application for water supply facility construction, etc., to the review device 300. It is preferable that the pre-examination unit 213 performs the pre-examination using the same criteria as the examination device 300. The pre-examination unit 213 may perform the pre-examination using the examination criteria stored in the application storage unit 220, or it may obtain the examination criteria used by the examination device 300 before performing the pre-examination and perform the pre-examination using the obtained criteria.

[0090] The application device 200 repeats hydraulic calculations a predetermined number of times by changing parameters related to water supply construction until it is determined that the application for water supply construction, etc., will be approved based on the results of the preliminary review. If it is not determined that the application for water supply construction, etc., will be approved even after repeating the preliminary review a predetermined number of times, the device notifies the construction company accordingly.

[0091] (Step S150) If the application device 200 determines through a preliminary review that permission for water supply system construction work, etc., will be granted, it can submit an application for water supply system construction work, etc., to the review device 300. Applications for water supply system construction and other related work can be submitted via the network NW to which the application device 200 and the review device 300 are connected.

[0092] (Step S160) The examination device 300 receives applications for water supply installation work, etc., from the application device 200 and examines the applications. The examination device 300 is equipped with an examination storage unit 320 and can examine applications based on the examination criteria stored in the examination storage unit 320. Depending on the content and items of the application for water supply installation work, etc., a water utility operator's representative may perform part or all of the examination by visual inspection or other means based on the information displayed on the examination display unit 340.

[0093] (Step S170) The review device 300 reviews applications for water supply system construction and other related work, and notifies the application device 200 of the review results via the network NW. Depending on the content of the review results, the person in charge of the relevant department may also notify the applicant by telephone or email.

[0094] (Step S180) The application device 200 receives the results of the review of the application for water supply installation work, etc., via the network NW. If the review result is approval for the work, the application device 200 can instruct the contractor 205 to commence the water supply work. If the review result is not approval for the work, the application device 200 can redo the hydraulic calculations, change the details of the water supply work, and resubmit the application for water supply installation work, etc., to the review device 300.

[0095] In conventional methods, construction contractors would visually read the length of straight pipes and piping elements (ball stop valves, check valves, gate valves, elbows, etc.) from drawings to calculate head loss for each section, then convert the scale to determine the actual length of straight pipes and the number of piping elements by type. Furthermore, water utility personnel would perform calculations visually based on submitted documents to verify whether the applicant had correctly performed the hydraulic calculations.

[0096] According to this embodiment, by designing water supply system construction and performing hydraulic calculations using a BIM model and utilizing the BIM data of the BIM model, hydraulic calculations can be performed without requiring manual intervention. As a result, designated construction contractors can quickly create data for applications related to water supply system construction and other related work, and can eliminate calculation errors and errors in extracting piping elements from documents.

[0097] Furthermore, the staff in charge of the water utility department that reviews applications related to water supply equipment construction can reduce the need to verify calculations because the application equipment 200 is submitted with no calculation errors in advance, and the verification calculations can also be easily performed using BIM data. In addition, since the details of the water supply construction can be understood from the isometric drawings correctly created from the BIM model, the burden of labor for the review process can be reduced.

[0098] (Second embodiment) (Selection of water supply method) When designing the construction of a water supply system, it is necessary to determine the water supply method. Water supply methods can be classified into three types: the water storage tank water supply system, the direct pressure direct water supply system, and the booster pressure direct water supply system. This embodiment is equipped with a water supply method selection unit, which allows for the selection of the appropriate water supply method based on the minimum dynamic water pressure of the water distribution pipe, the number of floors in the building where the water supply system is installed, and the water utility's review criteria.

[0099] When selecting a water supply system, past designs can be helpful. The water supply system selection unit can select a system by referring to past application data related to water supply equipment construction, etc., stored in the application storage unit 220. This selection of the water supply system can be easily performed by referring to the BIM model.

[0100] When selecting a water supply system, the latest data, such as laws and regulations like the Waterworks Act, the water utility's review standards, and the specifications of the equipment used in the water supply facilities, may be required. The water supply system selection unit can obtain the necessary data by accessing an external database via the application communication unit 230 and then select a water supply system. This selection can be easily performed by referring to BIM data.

[0101] The water supply method selection section allows for changes to the water supply method based on the results of hydraulic calculations and the water utility's review. For example, even if a direct pressure direct water supply method is initially selected, if the hydraulic calculations show that the water supply equipment does not reach the minimum dynamic water pressure, it can be changed to a reservoir water supply method or a booster direct water supply method. Similarly, if the direct pressure direct water supply method fails to pass the water utility's review, it can be changed to a reservoir water supply method or a booster direct water supply method. These changes to the water supply method can be easily made by referring to BIM data.

[0102] (Third embodiment) (Selection of a booster pump) When designing water supply system construction, if a direct-connection pressure boosting water supply system is selected, it is necessary to select a pump for pressure boosting. By performing hydraulic calculations using BIM data, the appropriate pump can be selected quickly. Furthermore, by performing hydraulic calculations using BIM data and sharing these calculations with pump manufacturers, it is possible to receive advice from pump manufacturers regarding the selection of an appropriate pump.

[0103] (Fourth embodiment) (Change of booster pump) After designing the water supply system, it may become necessary to modify the design, including changing the booster pump. For example, a pump that was in stock during the design phase may become unavailable during construction, or a problem may arise with the selected pump during construction, requiring the selection of a different pump. Such pump changes can be easily made by referring to the BIM data.

[0104] (Fifth embodiment) The application device 200 and the review device 300 may be connected via the server device 150. The application device 200 can be connected to the server device 150 and configured to select the appropriate application destination for water supply equipment construction, etc.

[0105] For example, by having the application device 200 input the location where the water supply equipment will be installed in an application for water supply equipment construction, the server device 150 can be configured to select a water utility operator to submit the application for water supply equipment construction based on that location, and then submit the application for water supply equipment construction to the selected water utility operator's review device 300. The system using the server device 150 can be easily constructed by referring to BIM data. (Sixth embodiment) The examination device 300 may also store the contents of applications related to water supply equipment construction, etc., in the application storage unit 220. By storing the contents of applications related to water supply equipment construction, etc., in the application storage unit 220, water supply equipment data is accumulated, and even if contact with the water supply construction contractor who carried out the water supply equipment construction is lost, maintenance and management of the water supply equipment can be carried out based on the accumulated data.

[0106] Furthermore, in the event of a water outage due to a disaster or other reason, and the need to utilize privately owned water storage tanks and other water supply facilities, having data on these facilities allows for the swift and accurate use of these facilities, resulting in the exceptional benefit of being able to use the water stored in the tanks as drinking water. This data can be easily accumulated using BIM data.

[0107] As described above, according to the present invention, construction companies, water utilities, and contractors can use the same platform with BIM data to advance water supply system construction, thus facilitating the application process for water supply system construction, the review of those applications, and the construction work after the review.

[0108] By using the same platform even with different water utilities, it eliminates the need to expend unnecessary effort on data conversion and other related tasks, even if water utilities were to merge.

[0109] Although embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and includes designs and the like that do not depart from the spirit of this invention. [Explanation of Symbols]

[0110] 100...Support system, 200...Application device, 300...Review device, 400...Hydraulic calculation sheet 1 500…Hydraulic calculation sheet 2, 600…Hydraulic calculation sheet 3, 700…Hydraulic calculation sheet 4 800...Isometric drawing, 900...Hydraulic gradient diagram

Claims

1. An application device that supports applications related to waterworks construction, A unit for acquiring information to acquire information regarding matters to be described in the aforementioned application, An application information setting unit sets the application information necessary for the application based on the information acquired by the information acquisition unit, An application storage unit that stores information regarding the review criteria, A pre-examination unit performs a pre-examination before the application is submitted, based on the information regarding the examination criteria stored in the application storage unit and the application information set in the application information setting unit. The system includes an application information output unit that outputs the application information set by the application information setting unit, Application device.

2. The aforementioned application information includes symbols or textual information described in the construction drawings. The application device according to claim 1.

3. It also includes an application display section, The application display unit displays the results of the pre-screening by the pre-screening unit. The application device according to claim 1.

4. The aforementioned pre-screening unit will be able to transmit application information that has been reset based on the results of the pre-screening. The application device according to claim 1.

5. The aforementioned application storage unit stores information regarding multiple different review criteria, The aforementioned pre-screening unit selects information regarding one of the multiple different screening criteria based on the application information, and conducts a pre-screening based on the information regarding the selected screening criterion. The application device according to claim 1.

6. The aforementioned pre-examination unit acquires information regarding the examination criteria and stores it in the application storage unit before conducting the pre-examination, and conducts the pre-examination based on the stored information regarding the examination criteria. The application device according to claim 1.

7. The aforementioned pre-screening unit predicts the screening results based on the aforementioned pre-screening, Depending on the prediction of the examination results, the application can be submitted using the application device. The application device according to claim 1.

8. It further includes a communication unit that communicates with the inspection device. The application device according to claim 1.

9. A support system for assisting applications related to waterworks construction, The support system comprises the application device described in any one of claims 1 to 8 and the examination device, The aforementioned inspection apparatus, A review unit that conducts a review based on the review criteria for the waterworks construction and the application information output from the application information output unit, A review result output unit that outputs the review results of the aforementioned review unit, A communication unit that communicates with the aforementioned application device, Equipped with a support system.

10. A support method performed by an application device that assists with applications related to waterworks construction, Obtain information regarding the matters to be described in the aforementioned application, Based on the information obtained, set the application information to be submitted. Based on the information regarding the review criteria and the application information, a preliminary review will be conducted before the application is submitted. Output the aforementioned application information. How to help.

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