Working principle of screw refrigeration compresso

2022-07-22
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As a kind of rotary refrigeration compressor, screw refrigeration compressor has the characteristics of piston type and power type at the same time. Many people still don't know the working principle of screw refrigeration compressor. The following editor will briefly introduce the working principle of screw refrigeration compressor and the preparations before installation

as a kind of rotary refrigeration compressor, screw refrigeration compressor has the characteristics of piston type and power type at the same time. Many people still don't know the working principle of screw refrigeration compressor. The following editor will briefly introduce the working principle of screw refrigeration compressor and the preparations before installation

· Preparation before unit installation

preparation before installation is related to whether the installation project can be completed comprehensively and with high quality, which runs through the whole process of the installation project

mark out and locate the place where the equipment is to be installed in the machine room, understand the characteristics of the installation project, the general progress requirements of the project, the delivery time of the equipment foundation, the supply and arrival of equipment and materials, the on-site installation conditions, the complexity of technology, and the deployment of manpower and machines and tools, and work out a feasible construction scheme on this basis

handling &mdash& mdash; After the equipment is transported to the site, the unit should be stored in the warehouse. If there is no warehouse and it must be stored in the open air, it should be properly padded at the bottom of the unit to prevent flooding. The wooden box of the equipment must be covered against rain to prevent rain from damaging the unit. When hoisting the unit, the hoisting construction must be carried out in strict accordance with the unit hoisting drawing provided by the manufacturer

before installation, the handling and hoisting route of the unit must be considered. Appropriate handling openings are reserved in the machine room. If the unit is small, it can enter the machine room directly through the door frame. If the unit is large, it can be repaired after the equipment is moved. If the machine room has been built and does not want to be damaged, and it is difficult for the whole machine to enter the machine room, some units can be transported separately. Generally, the condenser and evaporator are moved to the machine room separately, and then assembled

· Working principle of screw refrigeration compressor

bearing and radial seal: the male and female screws of screw refrigeration compressor are supported by sliding bearings (main bearings) and radial thrust ball bearings. The main bearing is correctly installed and fixed in the suction and exhaust end seats with column pins, and two thrust bearings are installed on the male and female screws on the exhaust side to bear a certain amount of shaft internal force. The shaft seal of screw refrigeration compressor also adopts friction ring mechanical seal, which is installed on the active rotor by coupling &mdash& mdash; On the end shaft, its structure and principle are the same as the shaft seal of the piston refrigeration compressor

balance piston: due to structural differences, the axial resultant force acting on the male screw is much greater than that acting on the female screw due to the pressure difference between the suction and exhaust sides. Therefore, in addition to the thrust bearing installed on the male screw, an oil pressure balance piston is also added to reduce the load of the male screw rod on the sliding bearing end face and reduce the axial force borne by the thrust bearing

energy regulating device: it is composed of slide valve, oil cylinder, oil piston, four-way electromagnetic directional valve and oil pipeline. The piston is installed at the intersection of the two circles at the lower part of the cylinder wall. Changing the position of the slide valve can adjust the refrigerating capacity

when the screw refrigeration compressor works, the volume of the primitive between the teeth changes periodically, so that the steam body can complete the process of steam absorption, compression and exhaust during the axial movement of the rotor

the relevant information about screw refrigeration compressor is introduced here. I hope this article is helpful to you. If there is anything else you don't understand, you can follow us and we will answer it for you as soon as possible

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