CN115758553A - BIM technology-based modular assembly type machine room implementation method - Google Patents
BIM technology-based modular assembly type machine room implementation method Download PDFInfo
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Abstract
The invention relates to the technical field of building construction, and discloses a modular assembly type machine room implementation method based on a BIM (building information modeling) technology, which comprises the steps of firstly establishing a valve and equipment family model, then sequentially carrying out physical dimension rechecking of a civil structure, establishment of a machine room equipment pipeline model, optimization design of equipment machine room arrangement, splitting of an equipment pipeline model, combination of prefabricated pipe sections, assembly processing drawing and material sheet manufacturing, factory processing of prefabricated pipe section assembly modules, acceptance and pre-assembly of prefabricated pipe section assembly modules, on-site measurement positioning, on-site assembly of the pipe sections and installation and positioning of a support hanger, and a series of steps; the invention can realize the high-efficiency and quick construction of the refrigeration machine room, shorten the construction period, save the labor cost, greatly reduce the field welding operation, rarely generate smoke dust and light pollution during the construction, reduce the fire hazard and simultaneously improve the construction and installation quality.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a modular assembly type machine room implementation method based on a BIM (building information modeling) technology.
Background
Currently, with adverse effects caused by global climate change in recent years, low carbon and carbon reduction are the current trends. The total energy consumption and carbon emission of the building industry are high, the scale of the Chinese building industry is still in a continuously increasing stage, and the total output value of the building industry occupies an important proportion of the total output value of the national production. Low-carbon construction is the inevitable requirement in the future, assembly type construction is the most effective carbon reduction measure in the building industry at present, and the country is also strongly promoting assembly type construction technology.
In the building construction, the refrigeration heat exchange machine room pipeline equipment has large engineering quantity, the processing quantity of the supporting and hanging frames is large, the labor cost is high, the method is a key process in electromechanical installation construction, the occupied construction period is long, and the method is usually a heavy-pollution area in site construction. The conventional method is as follows: after the machine room equipment enters a field and is in place, the pipeline installation is performed on-site prearrangement, on-site blanking and cutting welding according to a design drawing, and in the mode, the installation quality control has great uncertainty, a great amount of welding smoke pollution is generated in the construction, and great fire hazard exists.
The invention adopts BIM technology to carry out comprehensive arrangement of equipment pipelines of a refrigeration machine room, modularly splits a Revit model to form a prefabricated pipe group and a module pump group assembly module unit, uniquely numbers the prefabricated pipe group and the module pump group assembly module unit in combination with the assembly module, manufactures a high-precision processing detailed diagram, and delivers the high-precision processing detailed diagram to a specialized factory for prefabricating and processing. And after being locally pre-assembled and qualified in a factory, the prefabricated pipe groups are transported to a construction site through logistics distribution, and are combined with the prepared machining and assembling drawing to carry out site hoisting and assembling construction. The invention can realize the high-efficiency and quick construction of the refrigeration machine room, save the construction period by 80 percent, save the labor cost by 60 percent, reduce the field welding operation by 99.8 percent, generate little smoke and light pollution during the construction, reduce the fire hazard and simultaneously improve the construction and installation quality.
Disclosure of Invention
The invention aims to provide a BIM technology-based modular assembly type machine room implementation method, which can realize efficient and rapid construction of a refrigeration machine room, shorten the construction period, save labor cost, greatly reduce field welding operation, rarely generate smoke dust and light pollution during construction, reduce fire hazard and improve construction and installation quality.
The invention adopts the following technical scheme:
a BIM technology-based modular assembly machine room implementation method comprises the following steps:
1) Establishing a valve and equipment family model;
2) Rechecking the physical size of the civil engineering structure and controlling the size deviation;
3) Establishing a machine room equipment pipeline model, namely establishing a special air-conditioning water pipeline in the refrigeration heat exchange machine room and other ventilation, water supply and drainage, electric and fire-fighting spray pipelines into the same model file according to the original design drawing of the machine room;
4) The equipment room layout is optimally designed, the BIM technology is utilized to carry out deepening design on the refrigeration room, the limited room space is fully utilized, and all professional equipment pipelines are comprehensively arranged;
5) Splitting the equipment pipeline model;
6) Combining the split equipment pipeline models to form a prefabricated pipe group unit and a modular pump group unit by division;
7) Manufacturing an assembly processing drawing and a material sheet;
8) The prefabricated pipe section assembly module is processed in a factory;
9) Checking and accepting the prefabricated pipe section assembly module and pre-assembling the prefabricated pipe section assembly module;
10 Location of field measurements;
11 Tube section field assembly and support hanger installation in place.
Preferably, in the step 1), original design drawings are combined, manufacturer parameter information of various devices and valve accessories is collected, and a refined family model of the valve and device 1 is established according to the collected information of various valves and devices; forming a device and valve accessory component collection library; in addition, the parameters such as the wall thickness, the outer diameter and the like of the pipeline and the pipe fitting in the standard are inquired by combining the material of the pipeline in the drawing, and the pipe section and the size are set in Revit.
Preferably, the specific optimization step in step 4) is as follows:
(41) Arranging other professional pipelines except the water supply and return pipeline of the machine room on the upper part in a layered manner so as to reduce the cross collision between the professional pipelines and the equipment and reduce the pipeline collision amount by 40 percent;
(42) The vertical pipes of the cooling and freezing water supply and return interfaces of the refrigerating unit are arranged in the same row, and the mode of connecting the upper parts of the main pipelines of the water supply and return pipelines in rows is adopted;
(43) The circulating pumps are arranged in a row, and the connecting pipes are positioned above the pump set;
(44) The similar valve accessories on the vertical pipe of the equipment unit are arranged at the same height, and the height of the valve is controlled within 2.0 m; and finally, providing a machine room equipment pipeline layout according to the comprehensive arrangement result.
Preferably, in the step 4), the distance between the equipment in the machine room and the wall surface is not less than 1m, the width of the equipment maintenance operation channel is not less than 2.5m, and the clear height between the pipeline and the ground is not less than 2.8m.
Preferably, in the step 4), the professional equipment pipeline model of the machine room and the rest pipeline models of the machine room area are separated to form two REVIT files.
Preferably, in the step 5), the pipeline model of the machine room equipment is split by combining the specification parameters of the pipeline and the material type of the pipeline and considering the factors in processing and transportation; firstly, adding a pipeline flange in a pipeline type, a pipeline distribution system configuration and a flange of a revit software, then respectively carrying out segmented splitting on a pipeline model by utilizing a revit primitive splitting function, and generating a connecting flange at a pipeline connecting part when the model is split.
Preferably, in the step 6), the prefabricated pipe group units are combined according to the following points:
(61) Separating the pipe groups by using flanges at the positions of the valves on the pipe sections, and reducing the using amount of the flanges of the pipe sections by 30 percent;
(62) The flanges at the connecting parts of the adjacent prefabricated pipe sections are arranged on the straight sections, and the deviation is controlled within 10 mm;
(63) Selecting uniform prefabricated lengths for the rows of pipelines to be combined;
(64) A movable opening is arranged at the position of an external pipeline collision port of an equipment room and a machine room interface;
(65) The refrigerating unit outlet vertical pipe is provided with a single vertical pipe which is a prefabricated pipe group, and the upper valve is separated from the main pipeline connecting pipe by using a valve flange.
Preferably, in the step 6), two types of naming rules of the prefabricated pipe sections are defined; one type is a prefabricated pipe group containing pipes and accessories of each system, and is named in the following way: the method comprises the following steps of (1) marking the number of a prefabricated pipe group, numbering the prefabricated pipe groups, measuring the pipe diameters of the prefabricated pipe groups, and counting the same prefabricated pipe groups/belonging system of the prefabricated pipe groups; one type is a module pump set containing a circulating water pump and connecting pipeline accessories thereof, and is named in the following way: the module pump set code, the number of water pumps in the module pump set, the system to which the module pump set belongs, and the code for distinguishing the module pump sets in the same system can be omitted if only one set is available.
Preferably, in the step 7), modular drawing of the prefabricated pipe sections is performed by using the drawing performance of the revit software, the prefabricated pipe section processing and mounting drawings are collated and made, and the prefabricated pipe section processing material sheets are led out
Preferably, in the step 9), acceptance of the prefabricated pipe section is carried out according to a processing drawing, pipe section welding quality inspection and size deviation checking are carried out, whether the prefabricated pipe section has deviation with the drawing is checked, and the size deviation of the pipe section is not more than 2mm; pre-assembling inspection is carried out on the prefabricated pipe sections qualified by inspection in a manner of pre-assembling adjacent pipe sections, the coaxiality and parallelism of flanges of the pipe sections in a free state are mainly inspected, and the parallelism deviation of the flanges is not more than 1.2 thousandth of the outer diameter of the flanges; flanges at two ends are on the same axis, bolts can freely pass through the flanges, the deviation is not more than 3.5% of the outer diameter of the bolt hole, and a certification and pipe section coding information are attached after the bolts are qualified in acceptance.
Compared with the prior art, the invention has the beneficial effects that: the equipment pipelines of the refrigeration machine room are comprehensively arranged by adopting the BIM technology, the Revit model is split in a modularized mode to form a prefabricated pipe group and a module pump group assembly module unit, unique numbering is carried out by combining an assembly module, a high-precision processing detailed diagram is manufactured, and the prefabricated pipe group is delivered to a specialized factory for prefabricating and processing, so that the prefabricated pipe group has the advantages of high quality, safety, short construction period, low cost, environmental protection, and the like;
furthermore, the field pipeline is installed and integrated in a factory for prefabrication processing, so that efficient and rapid construction of a refrigeration machine room can be realized, and the construction period is saved by 80%. In addition, the equipment and the prefabricated modules are only arranged in place for the on-site machine room installation, and the pipe groups are assembled and connected, so that the labor consumption can be greatly reduced, and the labor cost can be saved by 60%; because only pipeline welding operation of the part of the reserved movable opening at the interface of the machine room is carried out on site, the site welding operation can be reduced by 99.8 percent, smoke and light pollution is rarely generated during construction, and the fire hazard is reduced by 90 percent.
Furthermore, the invention carries out optimization of equipment layout from the deepened design of machine room layout, and carries out factory prefabrication production on the pipe sections, thereby improving the quality controllability of the implementation process and greatly improving the construction and installation quality; the industrial prefabrication processing and assembly implementation method of a set of electromechanical equipment machine room summarized by the invention can effectively improve the management level of construction projects and promote the industrialization and digital transformation of the building industry.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a view showing the manner of connecting the outlet of the refrigerating unit and the upper part of the main pipe for supplying and returning water according to the present invention;
FIG. 3 is a piping layout diagram of the equipment room of the present invention;
FIG. 4 is a diagram of an equipment pipeline model split interface of the present invention;
FIG. 5 is a schematic view of a piping run layout system configuration interface of the present invention;
FIG. 6 is an exemplary illustration of the coding names of two types of prefabricated pipe sections according to the present invention;
FIG. 7 is a schematic diagram of a circulation pump set module of the present invention;
FIG. 8 is a schematic view of a circulating pump assembly module frame of the present invention;
FIG. 9 is a view of a prefabricated pipe section according to the present invention;
FIG. 10 is a view of a prefabricated pipe section filter installation interface of the present invention;
FIG. 11 is a prefabricated pipe section machining assembly drawing of the present invention;
FIG. 12 is an overall three-dimensional view of a refrigeration and heat exchange machine room according to the present invention;
FIG. 13 is an enlarged cross-sectional view taken at point A of FIG. 7 in accordance with the present invention;
FIG. 14 is a single drawing of a prefabricated pipe section work material of the present invention;
FIG. 15 is a block diagram of a prefabricated tube section of the present invention;
figure 16 is a diagram of a modular pump stack implementation of the present invention.
Detailed Description
The invention will now be described more fully hereinafter with reference to the accompanying drawings and examples in which:
as shown in fig. 1 to 16, the method for implementing a modular assembled machine room based on the BIM technology according to the present invention includes the following steps: 1) Establishing a valve and equipment family model; firstly, the original design drawing is combined, and the parameter information of various equipment and valve accessory manufacturers is collected. Wherein the valve accessories mainly comprise valve types, shapes, sizes and the like; the equipment mainly comprises a refrigerating unit and a circulating water pump; the refrigerating unit mainly comprises the overall dimension and the weight of the unit, the dimensions of a water inlet and outlet interface of the unit, the direction of the interface and the position of the interface; the circulating water pump mainly comprises a water pump form, namely a vertical type and a horizontal type; overall dimension, weight, base form, water pump interface dimension and interface position; establishing a valve and equipment 1 refined group model according to the collected information of various valves and equipment; forming a device and valve accessory component collection library. In addition, parameters such as wall thickness and outer diameter of the pipeline and the pipe fitting in the standard are inquired by combining the material of the pipeline in the drawing, and the pipe section and the size are set in Revit, so that the accuracy of establishing the electromechanical model is ensured.
2) Rechecking the physical size of the civil engineering structure and controlling the size deviation; and scanning the finished civil structure wall by using a three-dimensional scanning technology, comparing a point cloud model obtained by scanning with an original design drawing civil model, modifying the original design civil model, ensuring that the size deviation of the civil model and the civil structure entity finished by on-site actual construction is controlled within 10mm, and meeting the requirement of the prefabrication precision of subsequent pipe sections.
3) Establishing a machine room equipment pipeline model, namely establishing a special air-conditioning water pipeline in a refrigeration heat exchange machine room and other ventilation, water supply and drainage, electric and fire-fighting spray pipelines into the same model file according to an original design drawing of the machine room; primarily determining a pipeline elevation and a pipeline route according to a machine room pipeline plane layout diagram and a system thumbnail diagram, performing equipment arrangement, and establishing a pipeline route model; and then according to a principle diagram of a cold and heat source system of the machine room and a detailed connection diagram of the machine room equipment, completing the connection of the equipment and the pipeline, adding various valve accessories, and creating a refined model of the machine room equipment pipeline containing various valve accessories. The equipment and the valve family are the established families.
4) The layout of the equipment room is optimally designed; the BIM technology is utilized to carry out the deepening design on the refrigeration machine room, the limited machine room space is fully utilized, and all professional equipment pipelines are comprehensively arranged; while the use function is met, enough operation and maintenance space is considered, equipment and pipelines are arranged in a row, and the overall effect of arrangement of a machine room is improved; the distance between equipment in the machine room and the wall surface is not less than 1m, the width of an equipment maintenance operation channel is not less than 2.5m, and the clear height between a pipeline and the ground is not less than 2.8m; the method specifically comprises the following steps: (41) Other professional pipelines except the water supply and return pipeline of the machine room are arranged at the upper part in a layered mode so as to reduce cross collision between the professional pipelines of the machine room and the professional pipelines of the equipment and reduce 40% of pipeline collision amount; (42) The vertical pipes of the cooling and freezing water supply and return interfaces of the refrigerating unit are arranged in the same row, and the mode of connecting the upper parts of the main pipelines of the water supply and return pipelines in rows is adopted to reduce the occupation of the lower overhaul space; (43) The circulating pumps are arranged in a row, and the connecting pipes are positioned above the pump set so as to facilitate the division of the subsequent pump set modules; (44) The similar valve accessories on the vertical pipe of the equipment unit are arranged at the same height, and the height of the valve is controlled within 2.0 m; and finally, issuing a machine room equipment pipeline layout according to the comprehensive arrangement result.
In order to further ensure smooth software operation, at the moment, the professional equipment pipeline model of the machine room and other pipelines in the machine room area, such as spraying, smoke prevention and exhaust, cable bridges and other models are separated to form two REVIT files, and efficient operation of the next machine room pipeline model separation process is guaranteed.
5) Splitting the equipment pipeline model; splitting a machine room equipment pipeline model by combining pipeline specification parameters and pipeline material types and considering factors in the aspects of processing and transportation; as shown in fig. 5, a pipeline flange is added to the "pipeline type", "piping system configuration" and "flange" of the revit software, and then the pipeline model is segmented and split by using the "split primitive" function of revit, and a connecting flange is generated at the pipeline connecting part when the model is split.
6) Combining the split equipment pipeline models to form a prefabricated pipe group unit and a modular pump group unit by division; the prefabricated pipe section combination is a key control step, the planning of a combination scheme is carried out in advance, and the following key points are followed when the combination is implemented: (61) Separating the pipe groups by using flanges at the positions of the valves on the pipe sections, and reducing the using amount of the flanges of the pipe sections by 30 percent; (62) The flanges at the connecting parts of the adjacent prefabricated pipe sections are arranged on the straight sections, so that the fault tolerance rate of the pipe sections in the factory processing stage is improved, the accumulated error in the assembling process is reduced, and the deviation is controlled within 10 mm; (63) The rows of pipelines are combined by selecting uniform prefabricated lengths, so that the pipelines are neat and attractive, can be processed in batches, and reduce the number of non-standard sections; (64) A movable opening is arranged at the position of a pipeline collision port outside an equipment room and a room interface so as to eliminate the accumulated error of subsequent assembly; (65) The refrigerating unit outlet vertical pipe is provided with a single vertical pipe which is a prefabricated pipe group, the upper valve is separated from the main pipe connecting pipe by using a valve flange, and when a plurality of refrigerating units exist, batch prefabrication of the plurality of unit outlet pipe groups is facilitated.
And then, defining a naming rule of the prefabricated pipe section, wherein the code of the naming rule, namely the prefabricated pipe section code is the basis of subsequent work and is the premise of the subsequent work such as distinguishing, drawing, blanking processing, installing and the like. The invention designs two types of prefabricated pipe section coding names, as shown in fig. 6: one type is a prefabricated pipe group containing pipes and accessories of each system, and is named in the following way: the method comprises the following steps of (1) marking a prefabricated pipe group, numbering the prefabricated pipe group, measuring the pipe diameter of the prefabricated pipe group, and counting the same prefabricated pipe group/belonging system of the prefabricated pipe group; one type is a module pump set comprising a circulating water pump and connecting pipeline accessories thereof, and the following method is adopted for naming: the code of the module pump group, the number of water pumps in the module pump group, the system to which the module pump group belongs, and the code for distinguishing the module pump groups in the same system can be omitted if only one group is available.
When the prefabricated pipe combination is carried out, all components to be combined are sequentially selected, a pipeline component is created, and a component type name is named; the edit type is filled with the 'part code', namely the 'part code' is consistent with the 'part type name'. Since the aforementioned prefabricated pipe section code names are defined in advance, the component type name, the component code and the prefabricated pipe section code name of the created "pipe component" are the same name. When the module pump group is combined, in order to facilitate the integral transportation and installation in place of the pump group module, a steel section frame and a base required by a circulating pump group assembly module are designed to form a '2233' circulating pump group module, namely 2 or 3 circulating pump groups are combined into the circulating pump group assembly module together with pump group valve accessories, an upper pipe section and an assembly frame, and the circulating pump group module is combined into a 'mechanical equipment component' and is subjected to coding name correspondence. The pipe section combination operation is repeated to finish the combination of the component models one by one to form a 'pipeline part' with a unique code and a 'mechanical equipment part'.
The pump unit assembly module frame is designed, as shown in fig. 7 and 8, by taking a double water pump module as an example, the frame is made of 16# channel steel, the opening direction of the channel steel faces outwards, the module frame consists of a frame base, a frame upright post and a frame upper structure, and all the parts are fixed by welding. The frame base is provided with three transverse channel steel, the inner edge of a base channel steel a is aligned with the outer edge of the water pump, a base channel steel b is aligned with the outer edge of the water pump base, the channel steel a and the channel steel b are welded through 4 sets of channel steel double-splicing groups d with gaps left in the middle, and the width of the gap left in the middle is 20mm and used for a damper bolt to penetrate through and fix; the base channel steel double-assembly group c consists of two channel steels welded back to back and is used for rooting of the water pump vertical pipe bracket; 2 channels e are arranged on the outer side of the base in the width direction and connected with the channels a, b and c. Frame superstructure sets up 2 horizontal 2 vertical 4 channel-section steels, 2 channel-section steel f and base channel-section steel e parallel arrangement on the width direction, and 2 channel-section steel g interior margins distance upper portion trunk line outward flange 200mm on the length direction is connected with aforementioned f, supports upper portion trunk line. And finally, 4 channel steels h are arranged corresponding to the four corners of the base and the upper structure respectively to serve as frame columns to weld the upper structure and the base to form a whole. Namely, in the width direction of the module frame base, the distance between the outer edge of the water pump base and the frame is 200mm, the distance between the two water pump bases is 800mm, and in the length direction of the upper structure of the module frame, the distance between the outer edge of the upper main pipeline and the frame is 200mm. The length in the module frame base = the water pump length L + the reducing length + the soft joint length + the length from the center of the water pump vertical pipe elbow to the end face length-the channel steel width; the inner width of the module frame base = the width B of the water pump base +200+ of the water pumps (the number of the water pumps-1) × 800; the height in the module frame = the height of a shock absorber, the height of a water pump, the diameter-changing length, the length of a soft joint, the length of a vertical pipe valve group, the length of a short joint and the height of channel steel; the inner width of the upper structure of the module frame = the inner width of the base of the module frame; the length in the upper structure of the module frame = the distance from the water pump outlet center to the end face of the water pump inlet flange + the variable diameter length + the soft joint length + the water pump vertical pipe elbow center to the end face length + the main pipeline outside diameter +200+ above the pump group.
As shown in fig. 13, it is worth explaining that the circulating water pump is directly installed on the module frame base through the shock absorber, compared with the existing method, the water pump shock absorption prefabrication pedestal is omitted, the cost of the prefabrication pedestal is saved, and meanwhile, the height of the prefabrication pedestal is reduced in the module height direction, so that the whole module height is reduced, and the control of the module superheight in the transportation process is facilitated.
In addition, considering that the length of the steel pipe material is mostly 6m, 9m and other specifications, and the height of the logistics transportation plate trailer is 4m, the width of the logistics transportation plate trailer is 2.5m, and other factors, the shape, the size and the weight of the combined prefabricated pipe section are defined as follows: the length of the prefabricated pipe group is not more than 9m, the weight of the prefabricated pipe group is not more than 1.5T, the connecting direction of the pipe group during combination is reduced as much as possible, the control interfaces are not more than 4 directions, the size of the circulating pump group module is not more than 4 (length), 2.5 (width), 3 (height) m, and the weight of the circulating pump group module is not more than 6T.
7) Manufacturing an assembly processing drawing and a material sheet; and modularly drawing the prefabricated pipe section by using the drawing property of the revit software, finishing and manufacturing a prefabricated pipe section processing and installing drawing, and exporting a prefabricated pipe section processing material sheet.
When modular drawing of the prefabricated pipe section is carried out by utilizing the drawing property of the revit software, corresponding 'pipeline parts' are selected, part views are created, and detailed drawings such as a plan view, a section view, an elevation view and the like are directly created; the created detailed diagram needs to reflect the position relation, the shape and the size of the prefabricated pipe section and the connection sequence of all components; and carrying out category marking and dimension marking on all components in corresponding views.
When the prefabricated pipe section processing and mounting drawings are finished and manufactured, the prefabricated pipe section processing and mounting drawings mainly comprise detailed plan views of a flat surface and a vertical surface of the prefabricated pipe section and a three-dimensional mounting schematic diagram. Integrating the obtained detailed diagrams of the prefabricated pipe sections, making a single processing and installing diagram, reflecting the codes of the prefabricated pipe sections, reflecting the processing sizes and the connecting sequence of the components, filtering and coloring the prefabricated pipe sections according to revit software, visually distinguishing the prefabricated pipe sections to enable the prefabricated pipe sections to correspond to the codes, providing a three-dimensional schematic diagram of the installation of the pipe sections, and arranging the layout into a single drawing. And repeating the drawing operation until all prefabricated pipe section modules are drawn. As shown in fig. 10, since the aforementioned "component code" and "component type name" are consistent, filter setting using the "component code" ensures that the prefabricated pipe section codes correspond to the "component code" one by one, and the prefabricated pipe sections are accurately distinguished.
And finally, exporting a prefabricated pipe section processing material list, counting prefabricated pipe section material components by using a software material counting function according to the splitting and combining results of the prefabricated pipe sections, and exporting detailed prefabricated pipe section processing material lists.
8) The prefabricated pipe section assembly module is processed in a factory; and performing pipe section prefabrication processing in a prefabrication assembly factory according to a high-precision prefabricated pipe section processing drawing manufactured by BIM software. Importing the data of the processing material list into a numerical control machine tool of a factory, carrying out mechanical cutting on the pipe section, and welding the pipe section by adopting an automatic welding machine; and the prefabricated pipe section containing the valve accessories is connected with the prefabricated accessories in a factory.
9) Checking and accepting the prefabricated pipe section assembly modules and pre-assembling the prefabricated pipe section assembly modules; and (3) checking and accepting the prefabricated pipe section according to the processing drawing, checking the welding quality of the pipe section, checking the size deviation, checking whether the prefabricated pipe section has the deviation from the drawing, wherein the size deviation of the pipe section is not more than 2mm, and ensuring that the prefabrication processing quality of the pipe section meets the standard requirement. Pre-assembling inspection is carried out on the prefabricated pipe sections qualified through inspection in a pre-assembling mode of adjacent pipe sections, the coaxiality and parallelism of pipe section flanges in a free state are mainly inspected, and the parallelism deviation of the flanges is not more than 1.2 thousandth of the outer diameter of the flanges; flanges at two ends are on the same axis, bolts can freely pass through the flanges, the deviation is not more than 3.5% of the outer diameter of the bolt hole, and a certification and pipe section coding information are attached after the bolts are qualified in acceptance.
10 Location of field measurements; and (4) checking and accepting the elevation, the position, the size, the appearance quality and the concrete strength of the equipment foundation according to a foundation arrangement drawing. And carrying out on-site measurement and positioning according to the pipe section assembly schematic diagram and the plane layout diagram, carrying out paying-off positioning on the equipment unit locating point, and paying-off positioning on the support and hanger mounting point.
11 Pipeline section on-site assembly and support hanger installation in place; according to the measuring and positioning results, the equipment such as the refrigerating unit, the circulating pump set and the like are positioned according to the assembly process, namely the equipment is positioned from the inner side to the outer side in sequence according to the plane arrangement of the machine room. According to the assembly schematic diagram, assembling the prefabricated pipe sections by combining with the prefabricated pipe section codes, controlling the assembling precision by using a measuring tool in the assembling process, and checking the flange connection coaxiality and parallelism of the pipe sections; the deviation of the parallelism of the flanges is not more than 1.2 thousandths of the outer diameter of the flanges, the flanges at two ends of the pipeline are arranged on the same axis, bolts can freely penetrate through the flanges, and the deviation is not more than 3.5% of the outer diameter of the bolt hole. The accumulated error is compensated and eliminated by using the pipe section reserved movable opening, and the requirements of assembly drawings and standards are met. And after the pipe section is in place, assembling and installing the support and hanger to form a stable support system of the support and hanger in time.
According to the invention, the BIM technology is adopted to carry out comprehensive arrangement of equipment pipelines of a refrigeration machine room, the Revit model is split in a modularization mode to form a prefabricated pipe group and a module pump group assembly module unit, the assembly module is combined to carry out unique numbering, a high-precision processing detailed diagram is manufactured, and the prefabricated pipe group and the module pump group are delivered to a specialized factory for prefabricating and processing. After being locally pre-assembled and qualified in a factory, the prefabricated pipe groups are transported to a construction site through logistics distribution, and are combined with a prepared machining and assembling drawing to carry out site hoisting and assembling construction; the efficient and rapid construction of the refrigeration machine room can be realized, the construction period is saved by 80%, the labor cost is saved by 60%, the field welding operation is reduced by 99.8%, smoke and light pollution are rarely generated during construction, the fire hazard is reduced, and the construction and installation quality is improved.
In addition, compared with the similar implementation method, the method is mainly characterized in that the electric machine room equipment pipeline model is established on the basis of the civil structure model established on the original design drawing, then the civil structure model and the civil structure entity which is completed by construction are rechecked, the civil structure model is adjusted, and the machine room equipment pipeline model is secondarily adjusted. The process adopted by the invention is to firstly recheck the civil structure size of the machine room, and then establish the pipeline model of the machine room equipment after the civil model and the field entity are checked, thereby reducing the rework amount of the subsequent electromechanical model secondary adjustment caused by the deviation of the civil entity and the model, and improving the implementation efficiency by 50%. In addition, the invention adds a pre-assembly process after the factory processing and the factory inspection acceptance of the prefabricated pipe section assembly module, performs the pre-assembly inspection of adjacent prefabricated pipe sections, finds out the prefabricated pipe sections which do not meet the requirements in time and processes the prefabricated pipe sections in the factory processing stage, avoids the condition that the pipe sections cannot be assembled when being transported to the site, saves the time and the cost for returning to the factory for processing, improves the working efficiency, and saves the time and the cost for returning to the factory for processing by 20 percent.
Claims (10)
1. A modular assembly machine room implementation method based on BIM technology is characterized in that: the method comprises the following steps:
1) Establishing a valve and equipment family model;
2) Rechecking the physical size of the civil engineering structure and controlling the size deviation;
3) Establishing a machine room equipment pipeline model, namely establishing a special air-conditioning water pipeline in a refrigeration heat exchange machine room and other ventilation, water supply and drainage, electric and fire-fighting spray pipelines into the same model file according to an original design drawing of the machine room;
4) The equipment room layout is optimized, a refrigeration machine room is deeply designed by utilizing the BIM technology, the limited machine room space is fully utilized, and all professional equipment pipelines are comprehensively arranged;
5) Splitting the equipment pipeline model;
6) Combining the split equipment pipeline models to form a prefabricated pipe group unit and a modular pump group unit by division;
7) Manufacturing an assembly processing drawing and a material sheet;
8) The prefabricated pipe section assembly module is processed in a factory;
9) Checking and accepting the prefabricated pipe section assembly modules and pre-assembling the prefabricated pipe section assembly modules;
10 Location of field measurements;
11 Tube section field assembly and support hanger installation in place.
2. The BIM technology-based modular assembly machine room implementation method according to claim 1, characterized in that: in the step 1), original design drawings are combined, manufacturer parameter information of various devices and valve accessories is collected, and a refined group model of the valve and the device 1 is established according to the collected information of various valves and devices; forming a device and valve accessory component collection library; in addition, the parameters such as the wall thickness, the outer diameter and the like of the pipeline and the pipe fitting in the standard are inquired by combining the material of the pipeline in the drawing, and the pipe section and the size are set in Revit.
3. The BIM technology-based modular assembly machine room implementation method according to claim 1, wherein: the specific optimization step in the step 4) is as follows:
(41) Other professional pipelines except the water supply and return pipeline of the machine room are arranged at the upper part in a layered mode so as to reduce cross collision between the professional pipelines of the machine room and the professional pipelines of the equipment and reduce 40% of pipeline collision amount;
(42) The vertical pipes of the cooling and freezing water supply and return interfaces of the refrigerating unit are arranged in the same row, and the mode of connecting the upper parts of the main pipelines of the water supply and return pipelines in rows is adopted;
(43) The circulating pumps are arranged in a row, and the connecting pipes are positioned above the pump set;
(44) The similar valve accessories on the vertical pipe of the equipment unit are arranged at the same height, and the height of the valve is controlled within 2.0 m; and finally, issuing a machine room equipment pipeline layout according to the comprehensive arrangement result.
4. The BIM technology-based modular assembly machine room implementation method according to claim 3, wherein: in the step 4), the distance between the equipment in the machine room and the wall surface is not less than 1m, the width of an equipment maintenance operation channel is not less than 2.5m, and the net height between the pipeline and the ground is not less than 2.8m.
5. The BIM technology-based modular assembly machine room implementation method according to claim 4, wherein: in the step 4), the professional equipment pipeline model of the machine room and the rest pipeline models of the machine room area are separated to form two REVIT files.
6. The BIM technology-based modular assembly machine room implementation method according to claim 1, characterized in that: in the step 5), the pipeline model of the machine room equipment is split by combining the pipeline specification parameters and the pipeline material type and considering the factors in the aspects of processing and transportation; firstly, adding a pipeline flange in a pipeline type, a pipeline distribution system configuration and a flange of a revit software, then respectively carrying out segmented splitting on a pipeline model by utilizing a revit primitive splitting function, and generating a connecting flange at a pipeline connecting part when the model is split.
7. The BIM technology-based modular assembly machine room implementation method according to claim 1, characterized in that: in the step 6), the prefabricated pipe group units are combined according to the following points:
(61) Separating the pipe groups by using flanges at the positions of the valves on the pipe sections, and reducing the using amount of the flanges of the pipe sections by 30 percent;
(62) The flanges at the connecting parts of the adjacent prefabricated pipe sections are arranged on the straight sections, and the deviation is controlled within 10 mm;
(63) Selecting uniform prefabricated length for the rows of pipelines to be combined;
(64) A movable opening is arranged at the position of an external pipeline collision port of an equipment room and a machine room interface;
(65) The single vertical pipe is arranged on the vertical pipe at the outlet of the refrigerating unit and is a prefabricated pipe group, and the upper valve is separated from the main pipeline connecting pipe by using a valve flange.
8. The BIM technology-based modular assembly machine room implementation method according to claim 7, characterized in that: in the step 6), defining naming rules of two types of prefabricated pipe sections; one type is a prefabricated pipe group containing pipes and accessories of each system, and is named in the following way: the method comprises the following steps of (1) marking the number of a prefabricated pipe group, numbering the prefabricated pipe groups, measuring the pipe diameters of the prefabricated pipe groups, and counting the same prefabricated pipe groups/belonging system of the prefabricated pipe groups; one type is a modular pump set comprising a circulating water pump and connecting pipeline accessories thereof, and is named in the following way: the code of the module pump group, the number of water pumps in the module pump group, the system to which the module pump group belongs, and the code for distinguishing the module pump groups in the same system can be omitted if only one group is available.
9. The BIM technology-based modular assembly machine room implementation method according to claim 1, characterized in that: in the step 7), modular drawing of the prefabricated pipe sections is carried out by utilizing the drawing property of the revit software, the prefabricated pipe section processing and mounting drawings are arranged and manufactured, and the prefabricated pipe section processing material sheets are led out.
10. The BIM technology-based modular assembly machine room implementation method according to claim 1, wherein: in the step 9), checking and accepting the prefabricated pipe section according to a processing drawing, checking the welding quality of the pipe section, checking the size deviation, and checking whether the prefabricated pipe section has the deviation from the drawing, wherein the size deviation of the pipe section is not more than 2mm; pre-assembling inspection is carried out on the prefabricated pipe sections qualified through inspection in a pre-assembling mode of adjacent pipe sections, the coaxiality and parallelism of pipe section flanges in a free state are mainly inspected, and the parallelism deviation of the flanges is not more than 1.2 thousandth of the outer diameter of the flanges; flanges at two ends are on the same axis, bolts can freely pass through the flanges, the deviation is not more than 3.5% of the outer diameter of the bolt hole, and a certification and pipe section coding information are attached after the bolts are qualified in acceptance.
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