With the progress of science and technology, the control valve used to control fluid flow in production process automation has been widely used in various industries. For the control system of small cranes, as the regulating valve for the final control of the quality and safety production indicators of the process medium, it plays a pivotal role in stabilizing production, optimizing control, maintenance and overhaul cost control, etc. In the application of regulating valve, calculation and type selection are the prerequisite, installation and commissioning are the key, and use and maintenance are the purpose. If the regulating valve is improperly installed or poorly debugged, it will not play the role of regulation, or even become a burden to the system. next, Huai'an Crane Rental Company Introduce the following precautions for the installation of hydraulic regulating valve:
1. Basic principles of installation:
The installation of hydraulic control valve of small crane shall comply with relevant national standards, and shall be strictly implemented according to the provisions of design drawings and documents. For example, standards for quality inspection and assessment of building installation engineering, codes for construction and acceptance of industrial automation instruments, and codes for construction and acceptance of electrical equipment installation engineering; The equipment, auxiliary equipment and main materials required for installation shall comply with the relevant provisions of the current national standards.
2. Inspection before installation:
From delivery to installation, the hydraulic control valve and accessories of the crane are subject to random vibration excited by the means of transport during transportation and various impacts during loading and unloading, as well as changes in ambient temperature and humidity during transportation and storage, which may cause changes in the performance of the control valve and accessories. Therefore, it is necessary to check some performance before installation.
3. Inspection before installation of regulating valve mainly includes the following contents:
Appearance, static characteristics, leakage, no-load full travel time, withstand voltage strength, insulation performance, air tightness and sealing, among which the first five items are mandatory. Of course, there are certain requirements for the inspection site. For example, the ambient temperature is required to be 10~35 ℃; The relative humidity of air is not more than 75%; The site has enough space and sufficient light or lighting conditions; There shall be no violent vibration source and strong magnetic field interference around; The power supply and air supply meet the requirements.
4. Installation precautions:
The installation of hydraulic control valve of small crane must ensure safety, service performance, easy operation and maintenance, and save installation costs. The following is about the specific problems that should be paid attention to during installation.
5. Prevent leakage:
The hydraulic control valve of the small crane shall not leak during installation. Leakage may occur if gaps or micropores are formed in the packing culvert, flange gasket and other parts of the electric control valve during use. If the operating conditions of the fluid medium are harsh, such as high temperature, high pressure and corrosive fluid, the damage will be aggravated and the risk of leakage will be greater. There are many ways to prevent leakage. In the installation process, the selection of packing, sealing method and regulating valve with good sealing performance must be considered.
Huai'an Crane Leasing Company Reminder:
To ensure safety and prevent leakage, the selection of packing, sealing method and regulating valve with good sealing performance must be considered during installation.
