Method for applying PIPE-FLO digital simulation to water balance debugging

Abstract

The invention relates to a method for applying PIPE-FLO digital simulation to water balance debugging. PIPE-FLO software is used for air conditioner water system balance simulation and parameter rechecking; setting simulation boundary conditions of the air conditioning water system by using PIPE-FLO software; then building a pipe network model; after division of the balance debugging module, balance valve opening presetting and balance valve opening fine adjustment are carried out; and finally locking the opening degree of the balance valve, recording debugging data, and applying the debugging data to hydraulic balance debugging of the air-conditioning water system. The valve position is preset through the PIPE-FLO hydraulic balance simulation software, the hydraulic balance debugging process is summarized, and the air conditioner water system hydraulic balance debugging standardization system is established, so that the flow distribution of the air conditioner water system is reasonable, and the operation stability, safety and energy saving performance of the air conditioner system are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical and electrical installation and debugging of construction projects, and in particular to a method for horizontal balance debugging using PIPE-FLO digital simulation. Background Art

[0002] With the continuous development of society and economy, the number of super high-rise buildings is increasing day by day. At the same time, people's requirements for living comfort are getting higher and higher. Central air-conditioning systems have become a standardized configuration in engineering. As an important part of the central air-conditioning system, the balance of the air-conditioning water system determines whether the central air-conditioning system can be energy-efficient and operate normally and stably. Since the actual system pipeline resistance characteristics are inconsistent with the designed system pipeline resistance characteristics, it is easy to cause hydraulic imbalance where the actual flow rate is inconsistent with the designed flow rate. This leads to unreasonable system flow distribution, uneven system cooling and heating, the water system is in a large flow and small temperature difference operating condition, and inefficient equipment operation, which causes energy waste.

[0003] At present, there are not many projects with successful hydraulic balance debugging, mainly because the construction units lack professional technicians and equipment, there is no standard and complete hydraulic balance debugging system, and the traditional hydraulic balance debugging method is complicated to operate, time-consuming, large debugging workload, poor debugging effect, and high labor and time costs. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the object of the present invention is to provide a method for water balance debugging using PIPE-FLO digital simulation.

[0005] A method for water balance debugging using PIPE-FLO digital simulation is performed in the following steps:

[0006] Step 1: Preparation work before commissioning: Understand the design data of the project air conditioning water system and check the installation information of the project air conditioning water system;

[0007] Step 2: Air conditioning water system balance simulation: Use PIPE-FLO software to perform hydraulic balance simulation and parameter review on the project air conditioning water system;

[0008] Step 3: Boundary condition setting: Use PIPE-FLO software to set the boundary conditions for air conditioning water system simulation;

[0009] Step 4: Build a pipeline network model: Use PIPE-FLO software to build a fluid distribution pipeline network simulation model;

[0010] Step 5: Balance debugging module division: define the loop composed of branches and terminals as branch modules; define the loop composed of risers and branch modules as riser modules; define the loop composed of trunks and riser modules as system modules; combine different modules to form a debugging system diagram;

[0011] Step 6: Preset the opening of the balancing valve: Use the PTPE-FLO software to simulate the hydraulic balance of the system, calculate the preset opening of the static balancing valve of the system, that is, the number of opening circles, mark the circle value on the drawing, and directly set the balancing valve according to the opening value during the debugging process;

[0012] Step 7: Fine adjustment of the balance valve opening: Use measuring instruments to finely adjust the static balance valve opening to ensure that the balance of the air conditioning water system meets the specification requirements;

[0013] Step 8: Lock the balancing valve opening, record the debugging data, and apply it to the hydraulic balance debugging of the air conditioning water system.

[0014] Furthermore, in step 1, the specific steps are:

[0015] Step 1.1: Understand the design data of the project's air conditioning water system, including system schematics, floor plans, equipment design parameters, and static balancing valve design flow. Fully understand the design intent, system overview, various design parameters, valve performance and usage, and clarify the characteristics of the water system and the location of the static balancing valve.

[0016] Step 1.2: Check the installation information of the air-conditioning water system of the project, including checking and accepting the pipeline routes, equipment and valves of the air-conditioning water system together with the construction unit and the construction unit, to find out whether the supply and return pipes are connected in reverse, the valve type or model is installed incorrectly, there is no exhaust valve installed at the highest point of the riser, the installation and construction are inconsistent with the design and the installation quality does not meet the requirements of the specifications, so as to find out the reasons and understand whether there are any design changes, and draw a sketch of the actual system accordingly. For installation problems, the defect list should be filled out item by item, and the construction unit should be asked to complete the rectification before commissioning.

[0017] Furthermore, the hydraulic balance simulation in step 2 includes the hydraulic balance between the branches of each fresh air unit and combined air-conditioning unit. According to the simulation results, the pressure drop values ​​at different branch design flow rates in the loop are analyzed to provide a basis for the selection and verification of the balancing valve and the preset valve opening of the air-conditioning water system. In addition, under 100% load conditions, the simulation model is used to simulate and review the design head of the water pump, optimize the water pump selection, and make the water pump operate efficiently and energy-saving.

[0018] Furthermore, the setting of the air conditioning water system simulation boundary conditions in step 3 includes: engineering units, fluid medium physical parameters and pipeline specification table.

[0019] Furthermore, in step 4: the air conditioning water system pipe network simulation model builds a water system schematic diagram, and each component in the water system is represented by a corresponding module, in which the blocks represent the main equipment and valve components of the water system, and each equipment and valve component is connected by a pipe section.

[0020] Furthermore, in step 6: the balancing valve opening is preset based on the hydraulic calculation of the air conditioning water system to determine the pressure drop of the equipment and related accessories at its design flow rate. Except for the most unfavorable loop, the theoretically required pressure head of each loop will have a difference with the actual pressure head. This difference needs to be eliminated by a static balancing valve.

[0021] Furthermore, in step 8: through the hydraulic balance debugging of the project air-conditioning water system, the flow of the air-conditioning water system meets the design requirements, and then the static balance valve opening is locked, and the debugging data is printed out on the computer for archiving, and applied to the hydraulic balance debugging of the air-conditioning water system.

[0022] In summary: the present invention uses PIPE-FLO hydraulic balance simulation software to preset valve positions, summarizes the hydraulic balance debugging process, and establishes a standardized system for hydraulic balance debugging of air-conditioning water systems, so that the flow distribution of air-conditioning water systems is reasonable, and the stability, safety, energy saving and comfort of air-conditioning system operation are effectively improved. The debugging cycle is shortened, and the input of debugging personnel is reduced. It plays a guiding role in the hydraulic balance debugging of super-high-rise projects and contributes to promoting the green and low-carbon development of buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the debugging method flow of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] like Figure 1 As shown, a method for using PIPE-FLO digital simulation for water balance debugging is performed in the following steps:

[0026] Step 1: Preparation work before commissioning: Understand the design data of the project air conditioning water system and check the installation information of the project air conditioning water system;

[0027] Step 2: Air conditioning water system balance simulation: Use PIPE-FLO software to perform hydraulic balance simulation and parameter review on the project air conditioning water system;

[0028] Step 3: Boundary condition setting: Use PIPE-FLO software to set the boundary conditions for air conditioning water system simulation;

[0029] Step 4: Build a pipeline network model: Use PIPE-FLO software to build a fluid distribution pipeline network simulation model;

[0030] Step 5: Balance debugging module division: define the loop composed of branches and terminals as branch modules; define the loop composed of risers and branch modules as riser modules; define the loop composed of trunks and riser modules as system modules; combine different modules to form a debugging system diagram;

[0031] Step 6: Preset the opening of the balancing valve: Use the PTPE-FLO software to simulate the hydraulic balance of the system, calculate the preset opening of the static balancing valve of the system, that is, the number of opening circles, mark the circle value on the drawing, and directly set the balancing valve according to the opening value during the debugging process;

[0032] Step 7: Fine adjustment of the balance valve opening: Use measuring instruments to finely adjust the static balance valve opening to ensure that the balance of the air conditioning water system meets the specification requirements;

[0033] Step 8: Lock the balancing valve opening, record the debugging data, and apply it to the hydraulic balance debugging of the air conditioning water system.

[0034] As a preferred embodiment, in step 1, the specific steps are:

[0035] Step 1.1: Understand the design information of the project's air-conditioning water system, including the system schematic, floor plan, equipment design parameters (including flow, water resistance, cooling capacity, temperature difference and other parameters), and static balancing valve design flow. Fully understand the design intent, system overview, and various design parameters. Understand the performance and use of valves, and clarify the characteristics of the water system and the location of static balancing valves. Step 1.2: Check the installation information of the project's air-conditioning water system, including inspecting and accepting the pipeline routes, equipment, and valves of the air-conditioning water system together with the construction unit and the construction unit, and find out whether there are reverse connections for the supply and return pipes, incorrect installation of valve types or models, no exhaust valve installed at the highest point of the riser, any discrepancies between the installation and design, and any places where the installation quality does not meet the requirements of the specifications, so as to find out the reasons and understand whether there are any design changes, and draw a sketch of the actual system based on this. For installation problems, the defect list should be filled out item by item, and the construction unit should be asked to complete the rectification before commissioning.

[0036] As a preferred embodiment, the hydraulic balance simulation in step 2 includes the hydraulic balance between the branches of each fresh air unit and combined air conditioning unit. According to the simulation results, the pressure drop value under the design flow of different branches in the loop is analyzed to provide a basis for the selection and verification of the balancing valve and the preset opening of the air conditioning water system valve. In addition, under 100% load conditions, the simulation model is used to simulate and verify the design head of the water pump, optimize the water pump selection, and make the water pump run efficiently and energy-saving. PIPE-FLO is a special software for creating a simulation model of a fluid transmission and distribution pipeline network system. It is one of the mainstream products in the field of fluid simulation. The software allows users to build a fluid transmission and distribution pipeline network simulation model in the form of a plane diagram or a system schematic diagram, which is convenient for system visualization. With the help of the powerful calculation engine of the software, hydraulic calculation, hydraulic balance simulation, and hydraulic condition analysis can be performed on open / closed systems and branch / ring pipe networks. It provides a platform for achieving energy-saving and efficient operation of water systems during the entire life cycle of design, construction, operation and maintenance.

[0037] As a preferred embodiment, the setting of the air conditioning water system simulation boundary conditions in step 3 includes: engineering units, fluid medium physical property parameters and pipeline specification table.

[0038] As a preferred embodiment, in step 4: the air-conditioning water system pipe network simulation model builds a water system schematic diagram, and each component in the water system is represented by a corresponding module, in which the blocks represent the main equipment and valve components of the water system (such as water pumps, chillers, terminal equipment, constant pressure tanks and balancing valves, etc.), and each device and valve component is connected by a pipe section. The fluid distribution pipe network simulation model built by the PIPE-FLO software is more intuitive and easy to read.

[0039] As a preferred embodiment, in step 6: the balancing valve opening is preset based on the hydraulic calculation of the air conditioning water system to determine the pressure drop of the equipment and related accessories at its design flow rate. The theoretically required pressure head of each loop except the most unfavorable loop will have a difference with the actual pressure head. This difference needs to be eliminated by a static balancing valve.

[0040] As a preferred embodiment, in step 8: through the hydraulic balance debugging of the project air-conditioning water system, the flow of the air-conditioning water system meets the design requirements, and then the static balance valve opening is locked, and the debugging data is printed out on the computer for archiving, and applied to the hydraulic balance debugging of the air-conditioning water system. The present invention uses PIPE-FLO hydraulic balance simulation software to preset the valve position, summarizes the hydraulic balance debugging process, establishes a standardized system for hydraulic balance debugging of the air-conditioning water system, makes the flow distribution of the air-conditioning water system reasonable, effectively improves the stability, safety, energy saving and comfort of the air-conditioning system operation, shortens the debugging cycle, reduces the input of debugging personnel, plays a guiding role in the hydraulic balance debugging of super-high-rise projects, and contributes to promoting the green and low-carbon development of buildings; at the same time, the debugging-related data can also be collected and then introduced through the deep learning and training of the AI ​​model to conduct correlation analysis and law summary, and improve to guide the construction and maintenance of the hydraulic balance debugging of the air-conditioning water system.

[0041] Although the specific embodiments of the present invention are described and illustrated in detail above, it should be pointed out that: we can make various equivalent changes and modifications to the above embodiments based on the concept of the present invention, and the functional effects produced by them still do not exceed the spirit covered by the specification, and they should all be within the scope of protection of the present invention.

Claims

1. A method for water balance debugging using PIPE-FLO digital simulation, characterized in that Follow these steps: Step 1: Preparation work before commissioning: Understand the design data of the project air conditioning water system and check the installation information of the project air conditioning water system; Step 2: Air conditioning water system balance simulation: Use PIPE-FLO software to perform hydraulic balance simulation and parameter review on the project air conditioning water system; Step 3: Boundary condition setting: Use PIPE-FLO software to set the boundary conditions for air conditioning water system simulation; Step 4: Build a pipeline network model: Use PIPE-FLO software to build a fluid distribution pipeline network simulation model; Step 5: Balance debugging module division: define the loop composed of branches and terminals as branch modules; define the loop composed of risers and branch modules as riser modules; define the loop composed of trunks and riser modules as system modules; combine different modules to form a debugging system diagram; Step 6: Preset the opening of the balancing valve: Use the PTPE-FLO software to simulate the hydraulic balance of the system, calculate the preset opening of the static balancing valve of the system, that is, the number of opening circles, mark the circle value on the drawing, and directly set the balancing valve according to the opening value during the debugging process; Step 7: Fine adjustment of the balance valve opening: Use measuring instruments to finely adjust the static balance valve opening to ensure that the balance of the air conditioning water system meets the specification requirements; Step 8: Lock the balancing valve opening, record the debugging data, and apply it to the hydraulic balance debugging of the air conditioning water system.

2. The method for water balance debugging using PIPE-FLO digital simulation according to claim 1, characterized in that: In step 1, the specific steps are: Step 1.1: Understand the design data of the project's air conditioning water system, including system schematics, floor plans, equipment design parameters, and static balancing valve design flow. Fully understand the design intent, system overview, various design parameters, valve performance and usage, and clarify the characteristics of the water system and the location of the static balancing valve. Step 1.2: Check the installation information of the air-conditioning water system of the project, including checking and accepting the pipeline routes, equipment and valves of the air-conditioning water system together with the construction unit and the construction unit, to find out whether the supply and return pipes are connected in reverse, the valve type or model is installed incorrectly, there is no exhaust valve installed at the highest point of the riser, the installation and construction are inconsistent with the design and the installation quality does not meet the requirements of the specifications, so as to find out the reasons and understand whether there are any design changes, and draw a sketch of the actual system accordingly. For installation problems, the defect list should be filled out item by item, and the construction unit should be asked to complete the rectification before commissioning.

3. The method for water balance debugging using PIPE-FLO digital simulation according to claim 1, characterized in that: The hydraulic balance simulation in step 2 includes the hydraulic balance between the branches of each fresh air unit and combined air-conditioning unit. According to the simulation results, the pressure drop values ​​under the design flow rates of different branches in the loop are analyzed to provide a basis for the selection and verification of the balancing valve and the preset opening of the air-conditioning water system valve. In addition, under 100% load conditions, the simulation model is used to simulate and verify the design head of the water pump, optimize the water pump selection, and make the water pump operate efficiently and energy-saving.

4. The method of using PIPE-FLO digital simulation for water balance debugging according to claim 1, characterized in that: The setting of the air conditioning water system simulation boundary conditions in step 3 includes: engineering units, fluid medium physical parameters and pipeline specification table.

5. The method of using PIPE-FLO digital simulation for water balance debugging according to claim 1 is characterized in that: In step 4: the air conditioning water system pipe network simulation model builds a water system schematic diagram. Each component in the water system is represented by a corresponding module, in which the blocks represent the main equipment and valve components of the water system, and each equipment and valve component is connected by a pipe segment.

6. The method of using PIPE-FLO digital simulation for water balance debugging according to claim 1, characterized in that: In step 6: The balancing valve opening is preset based on the hydraulic calculation of the air conditioning water system to determine the pressure drop of the equipment and related accessories at its design flow rate. Except for the most unfavorable loop, the theoretical required pressure head of each loop will have a difference with the actual pressure head. This difference needs to be eliminated by a static balancing valve.

7. The method of using PIPE-FLO digital simulation for water balance debugging according to claim 1, characterized in that: In step 8: Through the hydraulic balance debugging of the project air-conditioning water system, the flow of the air-conditioning water system meets the design requirements, and then lock the static balance valve opening, print out the debugging data on the computer for archiving, and apply it to the hydraulic balance debugging of the air-conditioning water system.

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