7results about How to "Avoid water hammer" patented technology

The utility model discloses an offshore platform variable frequency control fresh water supply system, including fresh water cabin, bottom plate, the outer wall of bottom plate one side is installed with three fresh water pumps through bolt, and three fresh water pump water inlet is installed with the water inlet pipeline through flange, three fresh water pump water outlet is installed with water supply pipeline no.

The invention relates to the technical field of reaction kettles, and discloses a jacket cooling and temperature control reaction kettle, which comprises a tank body, a feed port arranged on the upper surface of the tank body, a jacket, a steam inlet pipe, a discharge valve and a steam outlet pipe, the jacket is fixed on the peripheral surface of the tank body, the steam inlet pipe is fixed on the peripheral surface of the jacket, the discharge valve is fixed on the lower surface of the tank body, and the steam outlet pipe is fixed on the lower surface of the tank body. The steam outlet pipe is fixed on the lower surface of the jacket, the liquid collecting mechanism is arranged on the lower surface of the jacket, and the liquid collecting mechanism comprises a first annular groove, a first water guide plate, a vent hole, a liquid collecting frame, a liquid discharge valve and an exhaust valve. When the condensate water is discharged under the standard atmospheric pressure environment, the water attack phenomenon of the condensate water in the discharging process can be avoided, that is, the condensate water is prevented from being rapidly discharged from the liquid outlet under the action of high pressure, and violent vibration of the reaction kettle is avoided.

The invention relates to the technical field of semiconductor manufacturing, in particular to benzocyclobutene resin photoresist filtering equipment which comprises a filtering shell and a discharging pipe arranged on the lower surface of the filtering shell, a pressure buffering mechanism and a linkage mechanism are arranged on one side of the filtering shell, and a filtering mechanism is arranged in the filtering shell. Through cooperation of a plurality of components in the filtering mechanism, in the filtering process of benzocyclobutene resin photoresist, when the shell generates radial deformation due to pressure or the filter element center rod is slightly bent due to stress, the mounting boss can automatically slide in the mounting groove to drive the whole filter element to be subjected to radial fine adjustment, so that the filter element is prevented from being damaged, and the service life of the filter element is prolonged. The axis of the filter element is aligned with the axis of the deformed shell again, the bottom coaxiality deviation is prevented from being expanded, the conical boss at the upper end of the filter element can slightly slide and adjust the angle along the conical groove, the filter element is automatically pulled back to the position coaxial with the shell under the guidance of the conical groove, and coaxiality unbalance of the filter shell and the center rod is further avoided.

The utility model discloses a U-shaped blowdown anti-reflux device of a gas-liquid separator, which belongs to the technical field of gas-liquid separation and comprises a separator main body, the bottom of the separator main body is communicated and connected with a blowdown block, and one end, far away from the blowdown block, of a blowdown pipe is connected with an electric ball valve. A control unit used in cooperation with the flow sensor and the electric telescopic rod is arranged on the side, located on the electric telescopic rod, of the fixing frame. The electric telescopic rod firstly drives the blocking block to block the sewage discharging block, so that the sewage flow is gradually reduced, the water hammer effect caused by sudden reduction of the water flow speed when a valve is directly closed traditionally is avoided, the problems of pipeline vibration, connecting piece looseness, pipeline breakage and the like caused by the water hammer effect are reduced, and safe and stable operation of equipment is guaranteed; the service life of the equipment is prolonged, the flow sensor monitors the flow in real time, the control unit is matched to accurately control the electric telescopic rod and the electric ball valve, meanwhile, the problems of low pollution discharge efficiency, equipment corrosion and the like caused by leakage are prevented, and it is guaranteed that the pollution discharge process is efficient and environmentally friendly.

The utility model provides a pressure-limiting control mechanism and an off-peak water storage and supply system including the same, the pressure-limiting control mechanism includes: a first control valve including a first valve body, a valve core and a first piston movably arranged in the valve core, a piston cavity is formed between one end of the first piston and the inner wall of the valve core, and the other end is provided with a conduction hole communicated with a leading-in end and the piston cavity in a penetrating manner; the first piston blocks the water inlet end of the first valve body under the elastic action of the first elastic piece; the second control valve comprises a second valve body and a second piston which are respectively connected with the piston cavity and the water outlet end of the first valve body through a communication channel and a drainage channel, a guide hole communicated with the communication channel and the drainage channel is formed in the second valve body, the second piston comprises a plugging part and a pressed part which are arranged at an interval, and the water outlet end of the communication channel is located between the guide hole and the pressed part; and the second piston blocks the guide hole through the blocking part under the elastic action of the second elastic piece. The water storage work of the regulation and storage water tank can be controlled to be automatically started and stopped along with the pressure of a municipal pipe network in a mechanical control mode for peak shifting water storage.

The utility model provides a kind of coal tar heating dewatering device, belong to coal tar processing technical field, comprising: oil storage tank, heating coil is equipped in oil storage tank inside;Steam inlet of heating coil is connected with semi coke furnace waste heat boiler by steam pipeline, and steam outlet of heating coil is connected with condensate storage tank by backwater pipe, and exhaust port on condensate storage tank is connected with semi coke furnace waste heat boiler;The top of oil storage tank is equipped with feed inlet, and the bottom of oil storage tank is equipped with oil outlet;The top of oil storage tank side is also equipped with breather valve, and the outlet of breather valve is connected with the inlet of induced draft fan by full seal pipeline, and the outlet of induced draft fan is connected with carbonization furnace by pipeline.The coal tar heating dewatering device can improve coal tar heating efficiency and dewatering efficiency, reduce energy consumption, and has good dewatering effect, reduces operating cost, to solve the problem of higher dewatering cost caused by higher energy consumption, lower thermal efficiency and dewatering efficiency, slower dewatering and longer time consumption of existing dewatering equipment.

This application belongs to the field of gate valve manufacturing technology, specifically a damped high-temperature and high-pressure automatic gate valve, including a housing, a bracket fixedly connected to the top of the housing, a control component disposed on the upper part of the bracket, a gate component disposed in the middle of the control component, a barrier component fixedly connected to the middle of the inner wall of the housing, the barrier component including a horizontal plate, a funnel-shaped opening in the middle of the horizontal plate, an auxiliary pipe fixedly connected to the top of the horizontal plate, and a sealing gasket fixedly connected to the top of the horizontal plate; this application achieves liquid flow control through the mutual cooperation between the housing, the barrier component, and the gate component, etc. Through the mutual cooperation between the piston plate, the piston hole, and the auxiliary pipe, etc., when the piston plate completely closes the funnel-shaped opening, the liquid generates a damping force through the piston hole, which can make the pressure change of the fluid more gradual, effectively avoid water hammer effect, and is more practical.