摘要:
A heat storage tank, which is provided in a building, on a green tract of land, in sports facilities, and in the underground portion of a parking lot for the purpose of being used as a heat supply source for an air-conditioning system. This heat storage tank consists of a plurality of cisterns, between which communicating passages composed of communicating pipes are formed. The pressure in the communicating passages is controlled through a pressure controller, such as a pressure device or a vacuum device, which thereby functions as a communication controller for controlling an operation for opening and closing the communicating passages or an operation for regulating the flow rate of the water therein.
摘要:
An apparatus in process to serve as valve (4) to regulate the flow of particulate solids, which valve (4) relies on pressure differential rather than moving mechanical parts.
摘要:
A valve mechanism 100 is herein described that utilises a frangible plug 10. The valve mechanism comprises a valve body 50 having an inlet port 52 and an outlet port 54 and a passageway 56 extending therebetween. The valve mechanism 100 comprises a frangible plug 10 that is held within the valve body 50 to block the passageway 56 when the plug is intact. The plug comprises a predefined fracture plane and is configured to fracture across the predefined fracture plate 90 upon application of an impact force.
摘要:
A material having one-way valve properties includes a nonwoven substrate having a first surface having a first surface hydrohead value and a second surface having a second surface hydrohead value; and a superhydrophobic formulation disposed on the first surface, wherein the first surface hydrohead value is less than about 1 cm, and wherein the second surface hydrohead value is at least 4 cm greater than the first surface hydrohead value. Also, a personal care article includes this nonwoven substrate in a nonwoven fluid permeable topsheet having a body-facing surface and an opposing backside surface, the article also including a fluid impermeable backsheet and at least one intermediate layer disposed therebetween.
摘要:
The invention relates to a relief valve (10) for use with a conduit (18) includes a housing (12) attached to the conduit (18) and an engagement member (16) slidably disposed within the housing (12) and movable between a retracted position and an extended position. The engagement member (16) pierces the conduit (18) when moved from the retracted position to the extended position.
摘要:
An isolation valve system comprises a main body (32), an actuator body (34) and a sealing membrane (307). The sealing membrane (307) is arranged at a high pressure portion (36) of the isolation valve system. The sealing membrane (307) mechanically attaches the actuator body (34) to the main body (32). The sealing membrane (307) further seals the high pressure portion (36) from a low pressure portion (38). A burst plug (315) is arranged against the main body (32) and supports the actuator body (34). An activation arrangement (50) is arranged for allowing an at least partial displacement of the burst plug (315), typically causing a phase transition. The sealing membrane (307) is dimensioned to break when the actuator body (34) is moved due to the displacement of the burst plug (315). The isolation valve system comprises preferably a stack (30) of substrates (301- 304) being bonded together. The substrates (301-304) have micromechanical structures, which form at least the actuator body (34) and the sealing membrane (307).
摘要:
A "plug and play" process control valve 10 providing closed loop feedback control has a built in microprocessor 40, stepper-motor 20, a position encoder, a valve body having an inlet 11 and an outlet 12, and pressure sensors 30, 31 positioned within the inlet 11 and the outlet 12 of the valve body, the pressure sensors being connected to the microprocessor 20, which is in turn connected to an input from the position encoder, and provided with outputs to the stepper-motor 40. Within the valve body there are a pair of apertured ceramic shear action discs 13, 14. The stepper-motor rotates the upper disc 14 relative to the apertured stator disc 13 to control pressure or flow in the pipeline.
摘要:
A valve apparatus (100) for use in sterile fluid transfer or isolator systems has open entry (10) and exit (11) sides and a passageway (9) for fluid between the entry (10) and the exit (11) sides. The entry side (10) is connectable to an opening (4c) of a vessel or pipe (4) and the exit side (11) is connectable to downstream processing by means such as tubing, a vessel or a pipe. The entry side (10) includes a rupturable seal (2a) blocking the open entry side (10). Valve (100) also includes an actuator (5) attached to a piston (1) which moves within the valve (100), the piston being connected to the seal so that on movement of the piston, the seal is torn free from the entry side thereby allowing fluid gain entry to the valve (100) and to pass along the passageway (9) between the open entry (10) and exit (11) sides to downstream processing.