CN113268794A - DFMA-based fire pump house construction method - Google Patents
DFMA-based fire pump house construction method Download PDFInfo
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- 238000005516 engineering process Methods 0.000 claims abstract description 25
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- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
- E03B5/02—Use of pumping plants or installations; Layouts thereof arranged in buildings
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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Abstract
The invention relates to the technical field of building construction, and discloses a DFMA-based fire pump room construction method, which comprises the following steps: the equipment room is deeply designed by adopting a BIM technology; carrying out coincidence comparison on the BIM model and a three-dimensional point cloud model derived on site; carrying out support load rechecking by using support load calculation software; dividing a fire pump room into a plurality of areas according to the arrangement condition of equipment pipelines of the fire pump room and a planned construction sequence; modularly disassembling equipment in the fire-fighting pump house, and disassembling each component; simulating the construction sequence of the equipment by using a 3D printing technology, and manufacturing a 3D model; prefabricating the pipeline and the bracket by using a mobile processing factory in a construction site; and (6) assembling and installing on site. The construction method of the fire pump house provided by the invention is convenient to construct, saves the transportation cost, improves the construction efficiency, shortens the secondary modification time, and is easy to popularize and use.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a DFMA-based fire pump house construction method.
Background
The installation of an electromechanical equipment room is always a key difficulty in electromechanical system construction, and the traditional construction method of adopting field measurement, pipeline field cutting and field assembly welding in the equipment room after the operation conditions of the equipment room are handed over in civil engineering has the defects of long construction time, high requirement of constructors and poor operation environment.
Along with the development of the BIM advanced design technology and the factory prefabrication technology in the electromechanical system installation technology in recent years, the machine room pipeline equipment construction is more and more popularized in the mode of 'BIM technology + factory prefabrication + field assembly' construction, and the technology is applied to improving the overall construction quality, safety and progress management of the equipment machine room and can also greatly reduce the overall construction operation time. However, the factory prefabrication of the pipeline has higher requirements on factory selection and transportation, so that the cost is difficult to effectively control, the transportation cost is high, the construction efficiency is low, the secondary modification time is long, and the construction efficiency is seriously influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides the DFMA-based fire pump house construction method, which is convenient to construct, saves the transportation cost, improves the construction efficiency and shortens the secondary modification time.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a construction method of a DFMA-based fire pump house comprises the following steps:
the equipment room is deeply designed by adopting a BIM technology;
carrying out coincidence comparison on the BIM model and a three-dimensional point cloud model derived on site;
carrying out support load rechecking by using support load calculation software;
dividing a fire pump room into a plurality of areas according to the arrangement condition of equipment pipelines of the fire pump room and a planned construction sequence;
modularly disassembling equipment in the fire-fighting pump house, and disassembling each component;
simulating the construction sequence of the equipment by using a 3D printing technology, and manufacturing a 3D model;
prefabricating the pipeline and the bracket by using a mobile processing factory in a construction site;
and (6) assembling and installing on site.
Preferably, when the equipment room is deeply designed by adopting the BIM technology, model parameters of the universal family library model need to be adjusted and corrected according to data of pipes, equipment and the like provided by a manufacturer, so that the accuracy of the whole model is ensured to reach the LOD 400.
Preferably, an infrared distance meter and a three-dimensional laser scanning technology are used for actually measuring the field structure of the machine room, and the three-dimensional point cloud model derived on the field and the BIM model are superposed and compared to ensure that the error between the model and the field is within +/-10 mm.
Preferably, the fire pump room is divided into four areas, which are: water pump equipment and lead the upper hose portion, fire control and spray feed pipe portion, decompression valves part, fire-fighting water tank and water pump inlet pipe portion.
Preferably, when the 3D model is manufactured, a 3D printer is adopted to print each section of prefabricated pipeline and component, a pump group is printed in a modular mode, and then the modular pump group, the pipeline and the component are assembled in a segmented mode.
Preferably, the modularization pump package includes the pump body, be equipped with the water inlet and the delivery port that are linked together on the pump body, be equipped with the inlet tube on the water inlet, the inlet tube is kept away from the one end of the pump body is equipped with into water flange, the delivery port has the outlet pipe through soft articulate, keeping away from of outlet pipe the one end of the pump body is equipped with out water flange, the bottom of the pump body is equipped with the water pump frame.
Preferably, the mobile processing plant designs the station frame and the logistics system to be removable in order to install the prefabricated core equipment of the pipeline in the movable container respectively.
Preferably, the field fitting installation comprises the steps of:
performing construction technology background joint on workers, and determining construction technology, technical key points, instrument operation methods, essentials, quality control measures, safety control measures and the like;
selecting an installation origin in a machine room, and extending and installing all equipment and pipeline components on the origin according to the positioning size of a deepened design assembly drawing;
and integrally installing, and performing pressure test cleaning and test operation on the pipeline.
Preferably, after the field installation is completed, a hydraulic test or a pneumatic test is performed, wherein the hydraulic test comprises the following steps:
connecting a pressure test device with a pipeline system for pressure test, installing various valves and pressure gauges for pressure test in the pressure test system, installing an air release valve at the highest point of the system, and installing a drain valve at the lowest point of the system;
opening the air release valve, closing the water release valve, filling water into the system, and closing the air release valve when the air release valve continuously discharges water outwards;
and (5) checking whether the system has water seepage or water leakage after the system is filled with water.
After the water filling inspection is carried out, a pressure test pump is used for boosting pressure after no abnormality exists;
stabilizing the pressure for 8-12min when the pressure reaches the test pressure;
reducing the pressure to the design pressure, stopping pressure for 25-35min, and checking whether the pressure is qualified.
Preferably, the scaffold load is rechecked using MagicCAD software.
Compared with the prior art, the DFMA-based fire pump house construction method has the beneficial effects that: the mode that adopts the portable processing factory in scene is prefabricated the pipeline, carries out the modularization split to equipment simultaneously, can carry out the assembled installation when not only installing, and convenient construction has improved the efficiency of construction, and convenient transportation also need not carry out long-distance transport to the pipeline in addition, has practiced thrift the cost of transportation. Meanwhile, the modular assembly can avoid secondary modification, and the secondary modification time is shortened. The invention has simple operation, good use effect and easy popularization and use.
Drawings
FIG. 1 is a flow chart of the construction method of the present invention.
FIG. 2 is a flowchart of a deepening design.
Fig. 3 is a schematic structural view of the modular pump unit of the present invention using a spray water pump.
Fig. 4 is a schematic structural view of the modular pump set of the present invention using a fire pump.
Wherein: 1-a pump body, 2-a water inlet, 3-a water outlet, 4-a water inlet pipe, 5-a water outlet pipe, 6-a soft joint, 7-a water pump frame, 8-a first rising stem gate valve, 9-a pressure gauge, 10-an eccentric reducer union joint, 11-a second rising stem gate valve, 12-an exhaust valve, 13-a silencing check valve and 14-a support.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, a method for constructing a DFMA-based fire pump room according to a preferred embodiment of the present invention includes the following steps:
and (3) checking drawings, which comprises the following steps:
familiarizing with the drawings: technical personnel who organize participation project audit the drawing, are familiar with and master the characteristics and the technical requirement of this computer lab, propose suggestion and the scheme that can optimize to deepen equipment placement and pipeline trend under the prerequisite that satisfies the user demand, improve construction and operation efficiency.
And collecting the size parameters of the water pump equipment, the flowmeter, the pressure reducing valve bank, the check valve, the gate valve and the like of the fixed plate.
And (4) reviewing the drawings, namely communicating the places with unclear drawing expression with the design in advance, confirming the intention of the design, and carrying out the next step after the optimization suggestion is provided and verified.
The fire-fighting pump house drawing paper is audited in terms of construction difficulty, convenience in operation and maintenance operability, clearance, control of the installation position of the electric cabinet and the like during auditing;
and (3) carrying out deepening design on the equipment room by adopting a BIM technology, determining the installation trend and elevation of the equipment pipeline, and determining the form and installation position of each prefabricated pipe section and each prefabricated support. When the BIM technology is adopted to carry out deep design on an equipment room, model parameters of the universal family library model need to be adjusted and corrected according to data of pipes, equipment and the like provided by a manufacturer, and the accuracy of the whole model is ensured to reach LOD 400. The specific deepening design flow is shown in fig. 2.
The method for creating the deepened design model comprises the following main points:
1) and respectively creating models of the structure, the building wall and the electromechanical pipeline through Revit software according to project structure drawings, building drawings and electromechanical pipeline drawings.
2) The construction model is established by uniform rules and requirements for each specialty, a uniform coordinate system, an origin and a measurement unit are adopted, and the models of each specialty are coordinated and consistent and can be integrated and applied.
3) When a change occurs, information needs to be collected in time, the model elements and the related information are updated, and the related change is recorded.
The deepened design has the following main points:
according to the data of pipe fittings, equipment and the like provided by manufacturers, model parameters of the universal family library model are adjusted and corrected, the accuracy of the whole model is ensured to reach LOD400, and the accuracy of site construction can be guided.
The installation positions of the alarm valve group, the bypass pressure relief valve group and the pressure relief valve group are enough for operation. The construction standard of the fire-fighting water supply and fire hydrant system technical specification (GB50974-2014) is met.
And no pipeline is arranged above the installation position of the control electric cabinet.
The cable ladder frame, the tray, the groove box and the pipeline can be horizontally arranged at the same height; when the bridge frame is arranged up and down with the pipeline, the bridge frame is arranged up and the pipeline is arranged down; when the pipeline is arranged below, the pipeline is not suitable to be arranged in parallel right above the pipeline.
5) And performing collision check through software, checking whether the professional models conflict with each other, generating a collision report, optimizing the models and generating a comprehensive pipeline diagram.
The final BIM model diagram is to define specific elevation and positioning on the basis of the original model elements.
After the final BIM deepened design model and the comprehensive pipeline diagram are finished, all system parameters including pipeline section size, support stress, maintenance space and the like need to be rechecked;
the BIM model and the three-dimensional point cloud model derived on site are subjected to coincidence comparison, the hedgehog is subjected to on-site retesting, an infrared distance meter and a three-dimensional laser scanning technology are used for actually measuring the on-site structure of the machine room, the three-dimensional point cloud model derived on site is subjected to coincidence comparison with the BIM model, an effect diagram and an on-site error report are generated, and the model and the on-site error are guaranteed to be within +/-10 mm. In addition, the real object parameters of the components need to be communicated with equipment and pipe manufacturers used in the project in advance, the sizes of all the components in the model are ensured to be consistent with the real object, and the accuracy of the model is ensured, so that the real object sizes of the equipment and the pipe are retested.
And (4) carrying out stent load rechecking by using stent load calculation software. Arranging and selecting types of the supporting and hanging frames: arranging according to the number and the specification of the pipelines, and auditing by using MagicCAD support load calculation software;
deepening a water pump support: in the project, the difference between the position of the civil engineering reserved hole and the height marked on the drawing is 250mm, and a water pump support is required to be added on the basis of the original water pump concrete on site to ensure that the height of a water inlet pipe of the water pump is flush with the height of the hole, so that the water pump support is added in a deepened model, a large sample drawing is drawn, and the drawing is submitted to site manufacture.
And dividing the fire pump room into a plurality of areas according to the arrangement condition of the equipment pipelines of the fire pump room and the planned construction sequence. Specifically, the fire pump room is divided into four regions, and the regions are respectively: the fire-fighting water tank comprises a water pump device, an upper guide pipe part, a fire-fighting and spraying water supply pipe part, a pressure reducing valve group part, a fire-fighting water tank and a water pump water inlet pipe part;
equipment carries out the modularization split in the fire control pump house, is about to equipment, pipeline, accessory, valve member, support etc. "break up whole parts" combination and forms prefabricated module, changes the construction mode of "limit volume, limit welding, limit change" under the traditional mode, and the whole transportation of prefabricated module is after to the job site, only needs constructor to carry out "happy high formula" assembly can. And simultaneously, all the components are disassembled.
Modular selection is suitable for the prefabricated module requirements for modular splitting:
1) and the number of parts is less than that of other module groups, so that secondary modification caused by insufficient installation precision or assembly precision can be reduced.
2) The module should possess the mobility, and hoist and mount and transportation should be comparatively convenient.
3) The modules should be independent and convenient to store and transport independently.
According to the principle, the water pump equipment and the guide pipe part are selected to be installed in a modular mode. And during manufacturing, the components needing to be modularly installed are numbered and shown in the figure.
And simulating the construction sequence of the equipment by using a 3D printing technology, and manufacturing a 3D model. When the 3D model is manufactured, a 3D printer is adopted to print each section of prefabricated pipeline and component, a pump group is printed in a modular mode, and then the modular pump group, the pipeline and the component are assembled in a segmented mode;
prefabricating the pipeline and the bracket by using a mobile processing plant in a construction site. The movable processing factory is a pipeline prefabricating production line which can install core equipment prefabricated by pipelines in movable containers respectively, design a station frame and a logistics system into a detachable type and quickly move the prefabricating factory from one construction site to another construction site. The production equipment comprises high-precision continuous production equipment such as a multifunctional punching machine and a welding mechanical arm, and can be used for fully automatically completing operations such as cutting, welding and manufacturing of the prefabricated pipe sections and the prefabricated supports.
Wherein, the prefabricating process comprises the following procedures:
(1) designing a bottom-crossing: before the component processing is started, workers are designed to meet the background, and the construction process and the technical points of the component prefabrication, the instrument operation method, the key, the quality control measures, the safety control measures and the like are determined.
(2) Prefabricating a pipe section: prefabricating and producing various components in a mobile processing plant according to a prefabricated pipe section processing drawing, wherein the prefabricating and producing process comprises the steps of pipeline cutting, hole forming, threading, groove pressing, painting and the like; after the processing and forming, the finished products are numbered, so that the follow-up on-site tracking and installation are facilitated.
(3) Prefabricating a bracket: because this project exists that on-the-spot engineering time is short, the not enough characteristics of construction space, this fire pump room support adopts the mounting means of finished product support. The connecting mode of the cross arm and the vertical rod is galvanized bolt connection, each component of the support is prefabricated in advance on a mobile processing factory according to a large support sample processing drawing, the cross arm, the vertical rod, the palm plate, the blocking plate and the reinforcing plate of the support are produced and welded respectively, each finished support component is completed, and finally the cross arm, the vertical rod, the palm plate, the blocking plate and the reinforcing plate are connected after being positioned on site.
In addition, after the deepening of the whole model is completed, the 3D printer is used for carrying out three-dimensional printing on the deepened model of the water pump room, and a 'reduced version' water pump room real object is obtained and is used for simulating construction or collision problems possibly occurring on the site. Three-dimensional printing ratios such as the following table.
And (6) assembling and installing on site. The field installation comprises the steps of construction implementation preparation, field transportation and field assembly installation, wherein the field assembly installation comprises the following steps:
1. mounting and bottom crossing: before the construction on site is started, workers are subjected to construction technology background, and construction technology, technical key points, instrument operation methods, essentials, quality control measures, safety control measures and the like are determined.
2. And (3) measurement and paying-off: when the modularized installation construction is adopted, in order to reduce the overall deviation in the installation process, an installation origin is selected in a machine room, all equipment and pipeline components are installed in an extending mode on the origin according to the positioning size of a deepened design assembly drawing, and the installation position of the water pump equipment is used as the installation origin in the project.
3. Integral installation: according to the principles of convenience in field installation and space utilization rate, the field module installation sequence is as follows: the installation of the fire-fighting and spray water supply pipe hoisting pipe section module is completed, and the fire-fighting and spray water supply pipe hoisting pipe section module and the water pump are subjected to pipe assembly; installing a pressure reducing valve bank pipe section module; installing a DN250 water tank water supply pipeline and connecting equipment; installing a bypass pressure relief valve group module; and the pipeline is cleaned and operated in a pressure test mode after the pipeline is connected without errors.
Whether the flange plate and the sealing gasket are scratched or not is checked before the pipe sections are connected, parallelism and coaxiality between the flanges are checked in a free state, dial indicator monitoring equipment is erected on a coupler to monitor whether displacement exists or not, the equipment is reset and tested after the pipe sections are subjected to pressure test and blowing, and extra loads except the design cannot be borne after the equipment is installed and tested to be qualified.
In addition, in practical application, after the pipeline is installed, a pressure test should be performed on the pipeline system according to design requirements. The method can be divided into a strength test for checking the mechanical property of the pipeline and a tightness test for checking the connection quality of the pipeline according to the purpose of the test. The strength test and tightness test of the pipeline system generally adopt a hydraulic test, and if the hydraulic test cannot be adopted due to a design structure or other reasons, an air pressure test can be adopted.
This project is conventional fire pump house project, so still need carry out the hydrostatic test.
1. Conditions to be met before the pressure test:
1) the pipeline installation project within the test range is completely finished according to the design drawing except painting and heat insulation, and the installation quality meets the relevant regulations.
2) The expansion joint on the pipeline has been provided with temporary restraint means.
3) The pressure gauge for the test is verified, the precision of the pressure gauge is not lower than 1.5 grade in the period of periodic inspection, the full scale value of the pressure gauge is 1.5-2 times of the measured pressure, and the number of the pressure gauge is not less than 2.
4) The liquid meeting the pressure test requirements is prepared.
5) The pipe is already fixed as required by the test.
6) The test tube paths are separated from unrelated systems by blind plates or other measures.
7) The protocol was approved and technical background was performed.
2. The procedure and the steps of the hydrostatic test are as follows:
1) and (4) connecting. The pressure testing equipment is connected with a pipeline system for pressure testing, various valves and pressure gauges for pressure testing are installed in the pressure testing system, an air release valve is installed at the highest point of the system, and a water release valve is installed at the lowest point of the system.
2) And (5) irrigating. And opening an air release valve at the highest point of the system, closing a drain valve at the lowest point of the system, and filling water into the system. The water for pressure test should be purified water, and when the test is carried out on austenitic stainless steel pipelines or equipment connected with the austenitic stainless steel pipelines, the content of chloride ions in the water should not exceed 25 multiplied by 10 < -6 > (ppm). When the exhaust valve continuously discharges water outwards, the air release valve is closed.
3) And (6) checking. After the system is filled with water, the pressure is not increased urgently, and the system is checked to determine whether water seepage or water leakage occurs.
4) And (6) boosting the pressure. The water filling inspection is not abnormal, the pressure can be increased, a manual pressure test pump (or an electric pressure test pump) is used for increasing the pressure, the pressure increasing process is slow and stable, the pressure is increased to half of the test pressure, the pipeline system is comprehensively inspected once, if the pipeline system has problems, the pressure is released for repair, and the repair under pressure is strictly forbidden. If no abnormity exists, the pressure is continuously increased, when the pressure is increased to 3/4 times of the test pressure, a complete check is carried out again, when no abnormity exists, the pressure is continuously increased to the test pressure, and the pressure is generally increased to the test pressure by 2-3 times.
5) And (5) maintaining the pressure. And (3) stabilizing the pressure for 8-12min, preferably 10min, reducing the pressure to the design pressure, stopping the pressure for 25-35min, preferably 30min, and taking the condition that the pressure is not reduced and does not leak as the qualification.
6) After the working pressure testing is finished after the pressure testing, the blind plate and the expansion joint limiting facilities are removed in time, and accumulated water in the system is drained.
The DFMA-based fire pump house construction method has the advantages that the pipeline is prefabricated in a field movable processing factory mode, and meanwhile, the equipment is split in a modularized mode, so that the installation can be carried out in an assembled mode, construction is convenient, construction efficiency is improved, transportation is convenient, long-distance transportation of the pipeline is not needed, and transportation cost is saved. Meanwhile, the modular assembly can avoid secondary modification, and the secondary modification time is shortened. The invention has simple operation, good use effect and easy popularization and use
Referring to fig. 3-4, in this embodiment, the modular pump set includes a pump body 1, the pump body 1 may be any water pump, in this embodiment, a spray water pump and a fire water pump are taken as examples for description, respectively, a water inlet 2 and a water outlet 3 which are communicated with each other are arranged on the pump body 1, a water inlet pipe 4 is arranged on the water inlet 1, a water inlet flange is arranged at one end of the water inlet pipe 4, which is far away from the pump body 1, the water outlet 3 is connected to a water outlet pipe 5 through a soft joint 6, and the soft joint 6 is preferably a rubber hose joint. The water outlet pipe 5 is far away from one end of the pump body 1, a water outlet flange is arranged at the bottom of the pump body 1, and a water pump frame 7 can be arranged at the bottom of the pump body 1 and can be provided with a connecting device, so that the water pump frame can be conveniently connected with basic equipment in a machine room. The water inlet 2 and the water outlet 3 through at the pump body 1 set up inlet tube 4 and outlet pipe 5 respectively, and set up the flange respectively on inlet tube 4 and outlet pipe 5, install to directly with flange and fire pump room other pipeline flange joint can, not only the installation is simple, efficient, be convenient for in addition transport the whole to the job site of pump package. In addition, because the water inlet pipe 4 is connected with the water inlet 2 through the soft joint 6, the position can be adjusted when the water outlet flange is connected with other pipelines, and secondary modification is avoided.
In this embodiment, be equipped with first rising stem gate valve 8 and manometer 9 on the inlet tube 4, be convenient for control and intake and observe the pressure of intaking. Simultaneously, the inlet tube 4 with connect through eccentric reducing pipe joint 10 between the water inlet 2, eccentric reducing pipe joint 10 with connect through flexible joint 6 between the inlet tube 4, flexible joint 6 adopts the soft joint of rubber, finely tunes when being convenient for install, avoids the secondary to modify, has improved the installation effectiveness.
In this embodiment, the water outlet pipe 5 is provided with at least one second rising stem gate valve 11, and the specific number of the second rising stem gate valves 11 can be determined according to specific situations. Meanwhile, the water outlet pipe 5 is provided with an exhaust valve 12 and a silencing check valve 13, so that water vapor in the water outlet pipe 5 can be discharged in time, and the normal water outlet is ensured.
In this embodiment, the support 14 is supported on both the water inlet pipe 4 and the water outlet pipe 5, and the support 14 can effectively support the water inlet pipe 4 and the water outlet pipe 5. The support 14 may be of any form, as long as it is effectively supportive.
In the modular pump set in the embodiment, the pipelines, accessories, valve components, brackets and the like which are connected with the pump body 1 are combined into a prefabricated module by breaking the whole into parts, so that the installation efficiency is improved, and secondary modification is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A DFMA-based fire pump house construction method is characterized in that: the method comprises the following steps:
the equipment room is deeply designed by adopting a BIM technology;
carrying out coincidence comparison on the BIM model and a three-dimensional point cloud model derived on site;
carrying out support load rechecking by using support load calculation software;
dividing a fire pump room into a plurality of areas according to the arrangement condition of equipment pipelines of the fire pump room and a planned construction sequence;
modularly disassembling equipment in the fire-fighting pump house, and disassembling each component;
simulating the construction sequence of the equipment by using a 3D printing technology, and manufacturing a 3D model;
prefabricating the pipeline and the bracket by using a mobile processing factory in a construction site;
and (6) assembling and installing on site.
2. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: when the BIM technology is adopted to carry out deep design on an equipment room, model parameters of the universal family library model need to be adjusted and corrected according to data of pipes, equipment and the like provided by a manufacturer, and the accuracy of the whole model is ensured to reach LOD 400.
3. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: an infrared distance meter and a three-dimensional laser scanning technology are used for actually measuring the field structure of the machine room, and a three-dimensional point cloud model derived on the field is superposed and compared with a BIM model, so that the error between the model and the field is ensured to be within +/-10 mm.
4. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: the fire pump room is divided into four areas, which are respectively: water pump equipment and lead the upper hose portion, fire control and spray feed pipe portion, decompression valves part, fire-fighting water tank and water pump inlet pipe portion.
5. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: when the 3D model is manufactured, a 3D printer is adopted to print out each section of prefabricated pipeline and component, a pump set is printed in a modularized mode, and then the modularized pump set is assembled with the pipeline and the component in a segmented mode.
6. The DFMA-based fire pump room construction method as claimed in claim 5, wherein: the modularized pump set comprises a pump body, wherein a water inlet and a water outlet which are communicated with each other are formed in the pump body, a water inlet pipe is arranged on the water inlet, one end of the pump body, far away from the water inlet pipe, is provided with a water inlet flange, the water outlet is connected with a water outlet pipe through a soft joint, the water outlet pipe is far away from one end of the pump body, the water outlet flange is arranged at one end of the pump body, and a water pump frame is arranged at the bottom of the pump body.
7. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: in order to install the prefabricated core equipment of the pipeline in the movable container, the mobile processing plant designs the station frame and the logistics system to be detachable.
8. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: the field assembly installation comprises the following steps:
performing construction technology background joint on workers, and determining construction technology, technical key points, instrument operation methods, essentials, quality control measures, safety control measures and the like;
selecting an installation origin in a machine room, and extending and installing all equipment and pipeline components on the origin according to the positioning size of a deepened design assembly drawing;
and integrally installing, and performing pressure test cleaning and test operation on the pipeline.
9. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: after the field installation is finished, a water pressure experiment or an air pressure experiment is carried out, wherein the water pressure experiment comprises the following steps:
connecting a pressure test device with a pipeline system for pressure test, installing various valves and pressure gauges for pressure test in the pressure test system, installing an air release valve at the highest point of the system, and installing a drain valve at the lowest point of the system;
opening the air release valve, closing the water release valve, filling water into the system, and closing the air release valve when the air release valve continuously discharges water outwards;
and (5) checking whether the system has water seepage or water leakage after the system is filled with water.
After the water filling inspection is carried out, a pressure test pump is used for boosting pressure after no abnormality exists;
stabilizing the pressure for 8-12min when the pressure reaches the test pressure;
reducing the pressure to the design pressure, stopping pressure for 25-35min, and checking whether the pressure is qualified.
10. The DFMA-based fire pump room construction method as claimed in claim 1, wherein: and adopting MagicCAD software to calculate when rechecking the support load.
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