Electromechanical equipment is one of the important components of a building, and its installation quality has a direct impact on its future use. The construction of electromechanical installation project can effectively guarantee project quality, reduce project cost and increase economic benefit through technical renewal and transformation. With the improvement of people's living standard, more and more people focus on the construction technology and whether it can meet people's need for safety.
I. introduction to mechanical and electrical installation
Electromechanical installation is an important part of China's building engineering, which plays a vital role in the later use of buildings. The electromechanical installation includes all kinds of equipment, electricity, water supply and drainage, heating, fire control and so on.
A wide range of mechanical and electrical installation of construction, the involved in many areas, after the completion of the project began in structural engineering, at the end of the decoration project at the beginning of the basic throughout the procurement, installation, debugging and so on each stage.
Ii. Construction procedures of electromechanical equipment installation
There are many kinds of electromechanical equipment, therefore, installation requirements, processes and procedures are also different. The installation and construction procedures of electromechanical equipment are as follows:
1. Unpack and count. Mechanical and electrical equipment prior to installation, the project head together with the owner or the supplier in accordance with the packing list and equipment technical document for detailed installation of mechanical and electrical equipment inventory, registration, for important equipment to check acceptance, the two sides confirmed sign, the hand over formalities.
2. Base wiring. Refers to the equipment layout drawing and relevant building axis or edge lines and elevation lines for the installation of the baseline line.
3. The equipment is in place. The fixed electromechanical equipment in the installation of mechanical and electrical equipment is generally heavy in the body, and some machinery is needed to be transported to the project site. The equipment needs to be placed safely in the designated position by lifting and handling.
4. Precision testing and adjustment. This link is an important link in the installation process. It directly affects the quality of the installation works. The program includes dimensional chain principle, error analysis, all precision items and part shape precision items.
5. Equipment is fixed, it is heavy duty, high speed, vibration amplitude bigger electromechanical equipment is fixed on equipment foundation namely, if cannot undertake firm fixed, will bring about accident occurrence.
6. Disassemble, clean and assemble. This link is mainly aimed at disintegrating the electromechanical equipment and the whole electromechanical equipment over the period of anti-rust preservation. This is a relatively delicate work, if the cleaning is not clean or improper assembly, will bring hidden trouble to the normal use of electromechanical equipment.
7. Lubrication and equipment refueling. The lubricants should be clean, the choice of lubricants should be reasonable, the quality should meet the requirements, and the dosage of equipment oil and lubricants should be appropriate.
8. Adjustment, commissioning and acceptance. This link is an important link for comprehensive inspection of equipment manufacturing and equipment installation quality. The design covers a wide range of professional fields and a large number of personnel. After the operation of the equipment meets the standards, the project acceptance procedures should be handled in time.
Technical requirements for installation of electromechanical equipment
1. Technical requirements for installation of power distribution equipment
Power distribution device is the core of electromechanical equipment. Once there is a problem, people and equipment cannot work normally, resulting in the decrease of power supply reliability. Therefore, in this stage, must not be lax, must strictly according to the drawing construction, according to the standard according to the standard acceptance. In the actual engineering construction, it is often found that the circuit switch in the low-voltage switchgear is not in conformity with the design, and the model of the switch supplied cannot meet the actual needs, thus causing safety accidents.
2. Technical requirements for installation of power cables
Cable is the carrier of power transmission, if the quality is not qualified, it is easy to cause fire and other accidents. Engineering used in most of the cable along the shaft, bridge and channel laid, in the process used in the cable, a wide range of different size is different also, if not strictly controlled, errors will occur and cause unnecessary losses.
3. Technical requirements for busbar installation
The rectangular bus is mainly used as the connection line between high and low voltage equipment in the transformer substation. It is a flexible distribution system. Prefabricated bus installation should be careful to check the specifications, models, and dimensions. Check the number of accessories and fasteners used for connection. There are differences between bus and transformer distribution equipment. Measures should be taken to adjust the connection. In the process of loading, unloading, storing and using, experienced workers must be selected and installed in strict accordance with the technical guidance of the manufacturer.
4. Improvement measures related to installation technology of electromechanical equipment
1. Strictly carry out construction organization design and reasonable equipment selection
By the relevant personnel to study agreed, construction design and equipment choice, through technical means for calculation and checking, let it can realize the use value, also can ensure the good economic benefits. In the process of construction, the selection of equipment should not be changed, otherwise it will affect the progress of foundation work.
2. We will make overall planning and unified arrangements
Especially for large electromechanical installation projects, due to the large number of equipment and installation links, the overall layout should be carried out to achieve overall planning and order. In the process of construction, an overall person in charge or a project manager must coordinate the emergency response. Construction management personnel should be familiar with the installation of all materials and equipment in advance.
3. Improve the overall quality of the installation personnel
The low quality of mechanical and electrical workers is an important factor affecting the installation process and installation quality. Electromechanical workers must undergo pre-job training, master general installation knowledge, and be familiar with installation specifications.
4. The technical process should be strictly followed in equipment installation
Every kind of equipment installation, have certain way and procedure, cannot be anxious to achieve.
V. acceptance work
Acceptance is the last procedure to ensure installation quality. In fact, acceptance often plays an important preventive role in the detection of equipment installation problems. When the project has the physical examination of completion acceptance, the construction contractor shall first complete the work of self-assessment and self-inspection, and then submit the completion acceptance inspection report and completion report to the work supervision department. Supervision engineer must organize a professional supervision engineer for project completion always chat and engineering entity quality completion of pre-acceptance, to check out the problem, to urge the construction unit timely rectification, and finally to the construction unit data assessment is put forward. If the problem is found out, the supervising unit shall urge the construction unit to complete the rectification before final acceptance. Therefore, acceptance inspection is an independent and objective supervision and inspection made by a third party to the installation quality of the construction party, which is conducive to timely troubleshooting hidden dangers and preventing the occurrence of safety accidents.
In short, in the process of mechanical and electrical equipment installation construction, engineering and technical personnel to understand engineering characteristics, grasp the system engineering concept, achieve global planning and local coordination, using advanced construction method, follow the correct construction process, to ensure the normal operation of the whole construction.
