Basic Info.
Model NO.
Dump valve/Unloading valve
Standard Component
Standard Component
Product Description
Qinhuangdao Qianren Power Equipment Co., Ltd. is located in the beautiful coastal city of Qinhuangdao, we enjoy a comfortable environment and convenient transportation access. Qinhuangdao Qianren Power Equipment Co., Ltd. is formed by a group of experienced power plant and marine service personnel. Main products are power plant and marine equipments & spares. Through the continued development and expansion of the company,dedicated to strict quality control and thoughtful customer service,our products not only sell well in all cities and provinces around China,but also exported to clients in such countries and regions as Europe, Asia, America and Africa. We are the qualified supplier of following manufacturer:HARBIN TURBINE COMPANY LIMITED. (HTC)HARBIN BOILER COMPANY LIMITED SHANGHAI TURBINE COMPANY, LTD. ( A COMPANY OF SHANGHAI ELECTRIC )DONGFANG TURBINE CO., LTD. (DEC) We pursue the management tenet of "Quality is superior,Service is supreme,Reputation is first" and welcome new and old customers from all walks of life to contact us for future business relationships and mutual successUnloading valve is under certain conditions, can make hydraulic pump unloading valve.Unloading valve is usually a with two two-way valve solenoid valve is (often) the overflow valve, when the function is not unloading set system (pump) is used as the main stress, when unloading state (by two two-way valve action transformation) direct return tank pressure oil, the oil pump pressure drops to approximate to zero, in order to realize some loop control and improve the pump life, reduce power consumption.Of or belonging to an incorporated loop in a loop.The pressure-reducing valve is used to adjust the pressure required for the actuator and is in series in the circuit. It is generally not interchangeable.
Through the type
Unloading channels and pressure valves are set up respectively.During unloading, each joint valve core is in a neutral position. The oil source comes from a special oil channel running through each valve and is discharged back to the oil tank. The unloading oil channel runs through each reversing valve.When either valve is working (that is, the unloading oil channel is cut off).The oil source enters the controlled actuator from the directional valve of this route, and the working pressure is limited by the pressure valve in the figure.The advantage of this kind of unloading method is that the reversing valve stem from the neutral position → the working position of the movement process, the unloading oil channel is gradually closed, the amount of oil into the executive component gradually increased, the system pressure gradually increased, the executive component started smoothly, no impact, and has a certain speed regulation performance, the pressure valve structure is simple.Its disadvantages are long oil unloading road, large pressure loss, especially the number of reversing valve road, the disadvantages are more prominent, this kind of unloading mode is used for less occasions.
Unloading type
This kind of unloading mode divides into two kinds again
1, through control unloading valve unloading
Unloading valve and safety valve as one, constitute the pilot type pressure valve, the valve is unloading valve and safety valve, and sometimes overflow valve.During unloading, the control oil channel runs through all reversing valves, the same as the aforesaid unloading oil channel.When all reversing valves are in neutral position, the control oil passage of the unloading valve runs through all reversing valves and connects with the fuel tank.During unloading, most of the oil is unloaded with short passage and low pressure loss.Any valve reversing operation will cut off the control oil passage, and the oil source will enter the actuator from the reversing valve, and the working pressure will be controlled by the pilot valve.The system pressure is adjusted for the pilot valve.In this kind of unloading mode, even if the number of reversing valve routes increases, it only controls the increase of oil passage, the unloading pressure increases little, and always maintains a lower unloading pressure. This unloading mode is mostly used for manual reversing valve, and the unloading is reliable.
2, solenoid valve control unloading valve unloading
This unloading method is different from the previous one in that it controls whether the oil passage and oil tank are on or off, controlled by the solenoid valve. The unloading oil passage is short, the pressure loss during unloading is low, and it is convenient for automatic control
Power Plant-Valve |
Control / governing valve |
Butterfly valve |
Main steam stop valve |
Check valve/Non-Return Valve |
Water seal valve |
Vent valve |
Relief/safety valve |
Dump valve/Unloading valve |
Drain valve |
Pressure relief valve |
Solenoid valve |
Gate valve |
Pressure and temperature reducing valve |
Diaphragm valve |
Pulverized Coal Stop Valve |
Ball valve |
Partners |
Harbin Turbine (HTC) |
Dong Fang Turbine (DTC) |
Nanjing Turbine (NTC) |
Shanghai Turbine (STP) |
Qingdao Jieneng Steam Turbine (JieNeng) |
Hangzhou Turbine (HTC) |
Chang Jiang Energy Corporation (CCJEC) |
Hangzhou Chinen Steam Turbine (HCTC) |
Shandong QingNeng Power (QingNeng) |
Beijing Beizhong Steam Turbine (BEIZHONG) |
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SULZER VALVE |
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Address:
Room 508, Zhongguancun Building, Yanghe Road, Etdz, Qinghuangdao. Hebei, China
Business Type:
Trading Company
Business Range:
Industrial Equipment & Components
Company Introduction:
Qinhuangdao Qianren Power Equipment Co., Ltd. is located in the beautiful coastal city of Qinhuangdao, we enjoy a comfortable environment and convenient transportation access.
Qinhuangdao Qianren Power Equipment Co., Ltd. is formed by a group of experienced power plant and marine service personnel. Main products are power plant and marine equipments & spares. Through the continued development and expansion of the company, dedicated to strict quality control and thoughtful customer service, our products not only sell well in all cities and provinces around China, but also exported to clients in such countries and regions as Europe, Asia, America and Africa.
We are the qualified supplier of following manufacturer:
HARBIN TURBINE COMPANY LIMITED. ( A COMPANY OF HARBIN ELECTRIC CORPARATION)
HARBIN BOILER COMPANY LIMITED ( A COMPANY OF HARBIN ELECTRIC CORPARATION)
Shanghai TURBINE COMPANY, Ltd. ( A COMPANY OF Shanghai ELECTRIC )
DONGFANG TURBINE Co., Ltd. (A COMPANY OF DONGFANG ELECTRIC)
We pursue the management tenet of "Quality is superior, Service is supreme, Reputation is first" and welcome new and old customers from all walks of life to contact us for future business relationships and mutual success