The rapid development of the economy has accelerated the process of urbanization, especially in recent years, our country is actively carrying out urban construction work. At this time as a very key component of the construction industry, the HVAC project began to receive widespread attention. The reason why it can get people's attention is mainly because its construction quality is related to the daily life of the general public. HVAC installation project covers a lot of content, such as air conditioning ventilation, etc., its construction activities are very cumbersome, involving a number of steps, if the quality of the problem, will lead to the quality of the entire project is greatly disturbed, resulting in the efficacy of the project can not be played out. Through the above description we learned that the significance of the HVAC project is very critical, so we must do a good job of quality control, strict control of the construction quality, to prevent the occurrence of negative issues, to ensure that the project is of good quality.
1 Problems that have a high chance of occurring in the construction process
First, the design aspect. When working on the installation of the project, the design problems are reflected in the lack of design. Regardless of the nature of the construction project, drawings are a key component of it, and the same is true for HVAC projects. If drawings do not exist, there is no basis for subsequent construction work to be carried out. However, in the actual work often occurs the designer of the site is not very clear about the specific state of the situation, resulting in the design of the content and the real state of the content of the big difference. If the workers simply according to the drawings to carry out construction work, not only will lead to the project face rework problems, but also lead to the schedule can not be guaranteed, affecting the work of the relevant personnel.
Second, the material. Material is the key element of the project, if the quality of the material is too poor, it will lead to the overall quality of the project is too poor. In the specific installation, some companies do not seriously carry out the purchase of materials and subsequent storage and use of work, resulting in a lot of substandard materials are applied to the project. If the project using this material is put into operation, the overall effectiveness of the project will not be able to play out, and then replace it, not only waste of time but also a waste of energy, resulting in damage to the interests of the parties concerned.
Thirdly, technical manipulation. Although the design of the project is very significant, but if the control of technology is not good, it will cause a lot of negative problems. For example, the interface of the place often leakage problems, this phenomenon is mainly due to the failure to deal with the interface, not to put the wooden pads on top of the bracket will also lead to leakage phenomenon. In addition to these two points, if the insulation layer is not in close contact with the air conditioning pipe can also lead to problems. Or workers do not grasp the installation steps, the area where the fire damper should be installed to install a smoke exhaust valve, which can also lead to problems. And do not reasonably deal with the duct interface will lead to air leakage phenomenon, but also lead to the overall quality is poor.
Fourth, workers. When the project is carried out, the workers must be based on the drawings to carry out. But the actual situation is that many of the constructor's quality is low, the ability is not high, then they will not be able to realize that the drawings to convey the idea, completely based on their own judgment to carry out the work, ultimately leading to the results and the design of a great deviation. Some builders are too save money, will be omitted from the design work, when the constructor can only according to their own ideas to carry out the work. This is not only an uncomplicated approach to the project, but also leads to many safety issues.
Fifth, construction. Because the work covers a lot of content, the construction is faced with a lot of difficulties. Specifically, there are some problems in the quality of the following, respectively, there is no reasonable pre-hole, no correct control of the height and orientation, the end of the HVAC equipment slope is set unreasonably, resulting in waste of tubing, resulting in refrigeration and heating is not smooth; HVAC piping installation is completed, without pressure testing, rinsing and other processes directly to the hidden construction, resulting in piping to face the leakage, etc.; the process of HVAC piping installation without casing and other protective measures. HVAC pipe installation process did not take casing and other protective measures, or casing does not meet the requirements of strength and waterproofing measures, resulting in the existence of leakage and corrosion of the pipeline hidden danger; the various professions do not have good communication, resulting in the project faced with a lot of problems.
2 Methods to improve quality
2.1 Standardize construction drawings
Managing the HVAC installation project, the first thing you need to do is to familiarize yourself with the drawings, penetrate the minds of the designers, understand the design intent, carefully analyze the key parts marked in the drawings, and understand the requirements of the designers for the materials and equipment. To visit the construction site in time, compare the site with the drawings, find out the unreasonable places in the drawings, communicate with the designers in time, and y understand the design drawings through consultation with the designers. Managers should also review the following aspects in the pre-construction drawing review stage: whether the drawings are unlicensed design or overstep design; whether the design drawings signed by the design unit and the actual construction environment is coordinated; whether the drawings are practical, economical and safe, etc., to ensure the correctness and feasibility of the construction drawings.
2.2 Inspection of the quality of construction materials
Construction materials are a key factor in determining the quality of HVAC installation projects. Professional and technical personnel in the project should strictly check the construction materials and equipment, qualified before being used in the actual installation project. Professionals should at the same time familiarize themselves with the national technical standards and national design requirements, fully understand the specifications and models of materials required for this project, and strictly control the quality of construction materials.
2.3 Emphasis on HVAC engineering technology management
Drawings are important credentials and guiding documents for HVAC engineering construction. If found in the specific construction process and drawings deviation, need to modify the drawings, must be approved by the inspection department and the design department before proceeding. At the same time, it is also necessary to establish a specialized HVAC engineering supervision department, responsible for managing and monitoring the important processes and links in the construction, to ensure that each link is safe and effective, so as to improve the overall quality of HVAC engineering construction.
2.4 Improve the professional quality of construction personnel
A technical and professional construction team is the guarantee of project quality. However, most of the front-line construction workers in the construction industry are from rural areas, and their level of professional knowledge and construction technology is uneven. As the HVAC installation project is a complex system, often the technical level of the construction staff requires a high level, so the construction unit must actively carry out training work, so that they understand the importance of the quality of the HVAC project on the quality of the entire construction project, so that they can strictly require themselves, so as to establish an excellent construction team, in order to create the foundation for the creation of first-class engineering.
2.5 Improve the quality of HVAC installation project construction
Before the construction of HVAC installation project, the technical delivery should be done. In the actual construction, it should also strengthen the quality control and management of each construction link. First, do a good job of construction preparation, clear construction tasks. Second, strengthen the quality management of the insulation project. Third, pay attention to casing leakage and other problems. Fourth, for pipe laying construction, technicians should do a good job of pipe synthesis, while strengthening communication with other professionals. Fifth, strengthen the quality control of ventilation engineering construction. In short, quality control and management must be carried out throughout the construction process.
2.6 Strengthen the project progress check
The rate of progress of HVAC construction will have a great impact on the overall rate of the project. Therefore, it is necessary to do a good job of progress checking in the work. First of all, you have to make a plan. Then the drawings are reviewed and subsequent work can be carried out only after everything is up to standard. Finally recorded by the relevant personnel.
3 Conclusion
Through the analysis we learned that the HVAC installation work is very tedious, and it involves a lot of content. In today's society, many problems appear in the construction work, such as incorrect design, materials are not reasonably controlled, not mastering the progress, etc., such problems once appeared will lead to the construction quality of the project is greatly affected. Therefore, we must continue to analyze the work, to find out the problems in the construction, and then can be combined with the problem to develop reasonable countermeasures. In addition, but also to effectively enhance the quality of workers to ensure that they can carry out the work in accordance with the provisions of the project to ensure good quality.
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