Working principle of adjustable pressure reducing valve 1 Use The new adjustable pressure reducing valve is installed on the urban one-way water supply pipe, which can reduce the upstream (inlet) pressure of the higher valve to the downstream (outlet) pressure that meets the requirements of use. No matter how the upstream pressure and flow change, it is well adjusted. The downstream pressure remains constant. 2 new structures adjustable pressure reducing valve from the main valve, a pressure feedback system, the composition of the control line. The main valve is composed of main parts such as valve body, diaphragm seat, valve cover, diaphragm, valve stem and valve plate. The pressure feedback system consists of a pilot valve assembly and a control line. The control tube is composed of a gate valve, a filter, a pressure gauge, and a pipe accessory. 3 Working principle The outlet pressure of the pressure reducing valve is controlled by the adjusting bolt on the pilot valve. It cooperates with the needle valve on the pilot valve. Once the valve is set, the pressure is always constant. When the main valve is opened, the medium flows to the outlet and also enters the upper chamber of the main valve diaphragm chamber through the pilot valve, so that the opening height of the main valve plate is stabilized at a certain value, so that the pressure after the valve is constant. When the outlet pressure increases, the medium increases the pressure of the upper chamber of the main valve through the pressure feedback system, and the pressure balance of the upper and lower chambers of the main valve is destroyed, and the opening value of the valve is reduced, so that the flow rate through the open medium is increased, and the kinetic energy is changed. The pressure loss is caused and the post-valve pressure is reduced. Conversely, when the pressure behind the valve is lowered, the opening of the main valve plate is increased and the pressure behind the valve is increased. 4 technical parameters a , nominal pressure: 1.0MPa b, outlet pressure: PN1.0MPa adjustment range 0.1MPa-0.8MPa c, applicable medium: raw water, clean water d, medium temperature: 0 ° C -80 ° C 5 Features a, the new adjustable pressure reducing valve can be continuously adjusted, decompression, voltage regulation effect is good. An independent pressure feedback system is formed by the pilot valve, and the hydraulic principle is used for control. The outlet pressure is not affected by the inlet pressure and the flow rate change, and the pressure can be reduced and the static pressure can be reduced. b. Easy operation and maintenance, only need to adjust the adjusting bolt on the pilot valve to obtain accurate and stable outlet pressure. The internal key parts are made of high quality materials and require no maintenance. c. The caliber is large. It is the large decompression valve d of the domestic Zui and the streamlined wide body design of the valve body. The overcurrent volume is large and the resistance loss is small. e. It can replace the middle pool, reduce the area of ​​the pool land and avoid secondary pollution of water quality. |
|
|
|
In the United States and Canada, an Electric Blanket is a blanket with an integrated electrical heating device usually placed above the top bed sheet. In the United Kingdom and Commonwealth, electric blanket commonly refers to an electric underblanket (electric mattress pad), which is placed below the bottom bed sheet. Electric blankets usually have a control unit which adjusts the amount of heat the blanket produces. Blankets for larger sized beds often have separate controls for each side of the bed. The electric blanket may be used to pre-heat the bed before use or to keep the occupant warm while in bed.
Some modern "low voltage" electric blankets (such as Car Blanket) have thin carbon fiber wires and work on 12 to 24 volts. These blankets are more comfortable and even safer than ordinary 110/240 volt blankets.
Electric Blanket
Car Electric Blanket, Electric Under Blanket, Electric Over Blanket, Electric Heating Cape
Ningbo JustLive Electrical Appliance Co., Ltd , https://www.makeheat.net