H62y High Pressure Heater Oulet Check Valve
Automotive Equipment Membrane Switch Automotive Equipment Membrane Switch,Panel Resistance Of Touch Switch,Interior Wall Panel Resistance,Rubber Buttons Screen ZDX (HK) LIMITED , https://www.zdxmembranekeyboards.com
The high pressure heater inlet valve is installed at the inlet of the high pressure heater. When the high pressure heater malfunctions, the water level exceeds the allowable water level, and the water supply is switched to the bypass emergencyly to ensure the safe disconnection of the high pressure heater, thereby protecting the high pressure heater. .
High pressure heater inlet valve main model specifications:
Model: H61Y, H62Y
Nominal diameter: DN 175,225,275,300mm
Nominal pressure: PN 20.0, 25.0, 30.0mpa
Â
H62Y High Pressure Heater Oulet Check Valve
1. Full hydraulic control system: fast action, and the fastest switching time up to 2S.
2. Electric inlet valve and electric outlet valve can also be selected: The operation time is slightly longer, but 2 pneumatic quick-open valves can be omitted, simplifying the system design.
3. The hydraulic cylinder has a damper cone to protect the system piping and valve seat from impact.
4. The valve body is Z type or angle type, and the bypass direction can be adjusted within 180 degrees.
5. The valve body is cast or monolithic forged. Material: WCB, A105 or WB36 (15NiCuMoNb5). The WB36 valve body is more suitable for the use of supercritical and higher pressure units.
Â
H62Y High Pressure Heater Oulet Check Valve
High pressure heater inlet valve main parts material:
Body: High-quality carbon steel, Bonnet: High-quality carbon steel
Valve: Carbide, Seat: Carbide
Valve stem: chrome molybdenum steel, sealing ring: reinforced flexible graphite
Packing: Flexible Graphite, Bracket: Carbon Steel
The high-pressure heater combined valve is an automatic protective device equipped with a high-pressure heater to ensure that the valve automatically closes the water flow to the high-pressure piping system when a leakage occurs in the high-pressure piping system or an abnormal situation such as the watertight adjustment of the door is stuck. Open the bypass water, because the high-pressure heater in order to cut off the water, so design a set of protection valves on the water side, the name of the high-integrated valve refers to a set of valves so called integrated valves, with inlet valve and The export is divided into valves. High inlet valve is also commonly known as the water supply three-way valve. The three-way valve has electric and hydraulic pressure. Generally, more than 300,000 units call it the most, because the high-side water outlet valve is designed as an electric gate valve. The high-pressure plus valve is a hydraulic valve that is powered by water supply. When it is needed, the combined valve is closed to cut off the water supply, and the output of the small bypass pipe (two) is combined into a valve (also called a check valve). The check valve closes under the action of the small bypass flow, while the feed water flows through the check valve to the boiler to prevent the boiler from being cut off, while protecting the high pressure heater. The design of this valve is quite unique, divided into upper and lower valve seats. When the valve is opened to feed water into high-pressure, the valve plug is in contact with the upper valve seat to ensure that the water supply does not take the small bypass; when the valve is closed, the water supply is small. When the bypass enters the boiler, the valve plug is in contact with the lower valve seat to ensure that the high pressure can be disassembled and repaired.
The high protection valve produced by the company is used in the high pressure heater water supply protection system. When the high pressure heater malfunctions or other causes of high rejection, the high feed water is quickly cut off, the high pressure heater is decoupled, and the feed water is bypassed into the boiler. In order to protect the high-pressure heater, so that the normal operation of the unit. Our high protection valve is divided into three types according to different unit and system requirements:
2. Hydraulic control four-way high pressure protection valve (inlet valve)
The valve is a hydraulically controlled four-way valve. The feed water is introduced from the side inlet and the outlet is vented into the high pressure heater. Two outlets above the valve are connected to the bypass line. The valve has two upper and lower sealing surfaces. When the high-pressure normal operation, the valve automatically opens by acting on the differential pressure of the valve disc cross-section, the valve flap moves upward, contacts with the upper seal, and the bypass cuts off. When the accident occurs in the high-pressure heater and the water level exceeds the allowable water level, the water level signal opens the quick on-off valve through the electrical device. The condensate enters the upper part of the hydraulic cylinder, pushes the piston, moves under the valve flap, and closes the valve quickly. The two bypass pipes enter the boiler directly, enabling the high-speed splitting and the safe operation of the units. The valve has two valve seats. The sealing surface is surfacing with Stellite alloy. The lower valve seat is welded directly to the valve body. The upper valve seat and the valve body adopt a double-channel self-sealing structure to ensure the normal operation and long-term operation of the valve. No leakage occurs and the valve operates for 2 seconds. The valve is matched with an outlet valve (manual check valve) to ensure safe operation of the high pressure heater. According to the system requirements, the four-way valve can also be used for electric control, feedback from the accident signal, through the upper part of the valve electric device, drive the valve action, to achieve high protection function. 3. Use three electric valve combinations to realize high protection: When the system is working normally, close the bypass valve, open the high inlet and outlet valves, feed the water through the high pressure heater to the boiler, and open the bypass valve when the high pressure is faulty. , Close the high inlet and outlet valves to make the high-pressure solution, feed water through the bypass directly into the boiler, complete the protection of Gaojia, and ensure the normal operation of the entire unit.
Â