11 results about "Fluid pressure" patented technology

An Anode Rod Depletion Indicator for use with a sacrificial anode in a fluid storage tank. A core wire, which is arranged within the anode, has a series of hollow or fluted passageways. When the anode depletion causes a predetermined amount of the core wire to be exposed, fluid contained in the storage tank flows in the hollows or flutes of the core wire. The fluid pressurizes and activates a pressure gauge or switch, or pushes a piston up to a location, which is visible to the owner. In an embodiment, a visible indicator such as “Good” is visible on a pressure gauge until the fluid pressure indicates “Replace” on the pressure gauge or until the piston pushes up a “Replace” indicator to the need to replace anode rod, to prevent corrosion and failure of the tank, while the anode is still providing corrosion protection of the tank. An electrical switch may cut off supply fluid, fuel supply, and/or activate an alarm.

A low-pressure transducer including a disc-shaped metal diaphragm to which a fluid pressure is applied, wherein the diaphragm contains a raised beam formed by thinning the entire exterior surface of the diaphragm except for the beam; and at least one silicon strain gage glass bonded to the beam, wherein the low-pressure transducer can accurately gage pressures at least as low as 15 psi. The present invention also comprises a method for manufacturing a pressure transducer including the steps of forming a cylindrical diaphragm having a top surface and a lower surface; establishing a diameter and a thickness of the diaphragm relative to an operational plane by a creating a hole axially through the transducer body that terminates at the lower surface; and creating a raised surface in the shape of a cross beam integral to the operational surface; and bonding one or more strain gages thereupon.

The present invention allows the number of components to be reduced and assembly work to be easily performed. A cylinder drive manifold device that constitutes a cylinder drive apparatus is provided with a block-shaped manifold in which a plurality of holes are formed for circulating a fluid used for driving a plurality of fluid pressure cylinders. The manifold is configured such that a plurality of switching valves for supplying a fluid alternately to a first cylinder chamber and a second cylinder chamber of each of the fluid pressure cylinders are attachable. A plurality of check valves and a plurality of throttle valves are incorporated into the plurality of holes of the manifold.

The invention relates to the technical field of fluid pressure detection. The invention discloses a fluid pressure intensity detection device. The device comprises a box, a liquid discharging pipe isarranged at the bottom of the box, a supporting plate is arranged on an outer wall of the box, a support is arranged on the supporting plate, a pushing air cylinder is installed on the support, an output end of the pushing air cylinder is connected with a motor, an output end of the motor is connected with a piston plate, and the piston plate is in a sliding sealing connection with an inner wall of the box and can rotate in the box; a stirring unit is arranged in the middle of the piston plate; a support plate is arranged at the bottom of the piston plate; a containing chamber is formed between the support plate and the piston plate, and a sponge ring is arranged in the containing chamber. According to the scheme, on one hand, first-time to-be-detected liquid is prevented from being mixedwith next-time to-be-detected liquid; on the other hand, the requirement for detecting different liquid pressure intensities in the same equipment can be met, meanwhile, flushing, water draining and drying of the box can be combined into a whole, the flushing and drying efficiency of a used box is improved to a large extent, and the box body can be put into the next detection use more quickly.

The invention relates to the technical field of pressurization, and discloses a dry powder fire extinguishing device based on a fluid pressure intensity principle. The dry powder fire extinguishing device comprises a shell, wherein a button is fixedly connected to the outer part of the shell, a bottle body is fixedly connected to the inner part of the shell, a stirring fan is fixedly connected tothe inner part of the bottle body, a pressure plate is movably connected to the inner part of the bottle body, a sealing cover is fixedly connected to the inner part of the bottle body, and an elasticfilm is fixedly connected to the outer part of the sealing cover. According to the dry powder fire extinguishing device, under the interaction of the pressure plate, the sealing cover, the elastic film, a contact, a sliding rod, a first spring, a collision block, a first gear, a second gear, a first moving block, a third gear, a second moving block, a sliding plate, a detection assembly, a sliding rail and a sliding block, the internal pressure of a fire extinguisher can be kept constant all the time under the action of the pressure plate in the process of using the fire extinguisher by a user, so that the fire extinguishing range of the fire extinguisher can be kept in a good spraying range all the time, and the fire extinguishing time is shortened.

The present invention relates to novel positive lock system for restrained joints of ductile iron spun pipes and fittings which are able to take all the thrust loads produced due to transmitting fluids pressure and provide certain angular deflections to the axis of two pipes. For ductile iron pipe to be joined, a socket (bell shape) and a spigot (plain end) sections are provided in pipes. For joining plain end is inserted in bell shape end. As the water pressure surges, the joint tends to disengage due to increasing axial loads. To take these axial loads, a circumferential chamber is providedin bell shape end and plain end is provided with a weld bead of suitable size. Axial forces generated due to water pressure are transmitted to pipe socket through welding via locking segments. Lockingsegments are inserted in circumferential chamber and they stays between chamber and welding bead. Circumferential chamber has suitable clearances to provide the required angular deviations at the joint.

A fluid pressure actuator is provided with an actuator main portion whose shape is changed by the expansion or contraction of a cylindrical tube expanded and contracted by the pressure of fluid, and a detection unit for detecting the length L of the actuator main portion along the longitudinal direction of the tube.