10 results about "Limit pressure" patented technology

The utility model relates to valve technical field, and disclose a kind of pressure reducing type backflow preventer, including valve body, drain valve seat, drain valve flap, long valve rod, fixed screw, valve cover, the valve body is provided with drain valve seat, the drain valve seat inside is provided with drain valve flap, the drain valve flap upper side is provided with long valve rod, the valve body upper side is provided with valve cover.The pressure reducing type backflow preventer, by first valve seat, first valve flap, first main valve rod, first spring seat, first spring and first hexagon nut are assembled to it before being loaded into valve body, subsequent and present an integral loading into valve body inside, greatly shorten assembly time, also suitable for the assembly in the valve body of smaller volume, the unique flow passage design of two-stage check valve, small flow resistance, open and close speed is fast, can effectively prevent the damage of sudden back pressure rise to valve and pipeline, limit pressure water backflow or siphon backflow, with mute function, effectively prolong the service life of valve.

This application discloses a limiting locking mechanism and an aircraft, relating to the field of limiting structure technology. The limiting locking mechanism includes a limiting pressure bar, a pre-tightening device, and a pressure-bearing structure. One end of the limiting pressure bar constitutes an actuating part, and the other end constitutes a limiting part. The limiting pressure bar rotates around a first horizontal axis. The distance between the first horizontal axis and the actuating part is greater than the distance between the first horizontal axis and the limiting part. The pre-tightening device applies an upward force to the actuating part to drive the limiting part downward to the limiting area. The pressure-bearing structure moves along a first horizontal path to the limiting area to push the limiting part to overcome the force of the pre-tightening device and rotate upward. The first horizontal path is parallel to the first horizontal axis. The pressure-bearing structure of this solution can overcome the pre-tightening force of the limiting pressure bar and enter the pre-tightening area with a relatively small driving force, reducing the requirements for the power source. Moreover, the limiting pressure bar can apply a large compressive force to the pressure-bearing structure after it enters the pre-tightening area, ensuring the stability of the limiting constraint.

The application relates to the technical field of hydrogen storage cylinder pressure relief and detection, and particularly discloses an anti-explosion gas storage cylinder limit pressure detection device and a pressure relief structure thereof. When the pressure in the hydrogen storage cylinder abnormally rises and reaches a critical value, the pressure relief mechanism is automatically started to guide the high-pressure hydrogen gas to a limit relief joint. In the process, the pressure relief mechanism intervenes in the high-speed hydrogen gas flow to effectively reduce the flow rate and pressure of the hydrogen gas. When the pressure relief mechanism is started, the pre-fire extinguishing mechanism is driven to pre-extinguish the hydrogen gas after the pressure relief of the pressure relief mechanism, controllable and orderly relief of the high-pressure hydrogen gas is realized, violent impact caused by instantaneous pressure drop is avoided, and the early intervention of the fire extinguishing agent in the relief path can actively inhibit the combustion reaction caused by static electricity or external fire sources, so that the secondary explosion risk in the relief process is fundamentally eliminated, and the safety is greatly improved from passive pressure relief to active explosion suppression.

Adjustable vane pump (10) with a suction side (46) and a discharge side (21), with a housing (12) and with a rotor (18) rotatably mounted in the housing (12) about a rotor axis (16) and carrying at least one vane (22) movable in the radial direction, wherein the housing (12) comprises a housing base (30) and a housing cover (26) transversely to the rotor axis (16), and wherein an adjustable cage (32) is provided in the housing (12) between the housing base and the housing cover, surrounding the rotor (18) together with the vane (22) and adjustable transversely to the rotor axis (18), wherein the housing (12) and the adjustable cage (32) define a pressure chamber (38) fluidly connected to the discharge side (21), wherein a return element (36) is provided which forces the adjustable cage (32) into a basic end position, and wherein the adjustable cage (32) is deflected from the basic position when a limit operating quantity designed as limit pressure is exceeded in the pressure chamber (38),characterized in that the rotor is driven by an electric motor designed as a rotor drive (19), wherein the rotor drive (19) is operated in the nominal speed range (a) both when the adjustable cage (32) is in the basic end position and when the adjustable cage (32) is deflected from the basic end position, and in that adjustment of the adjustable cage (32) takes place directly depending on the pressure-side pump pressure, wherein the pressure side (21) is fluidically directly connected to the pressure chamber (38).

The utility model relates to a kind of multi-nozzle steam pressure matchers, including high-pressure steam chamber and pressure matcher shell, the high-pressure steam chamber is provided with several nozzles and sealing end cap, each nozzle and sealing end cap are respectively provided with valve stem, each nozzle and pressure matcher shell are respectively provided with mixed steam guide pipe, each mixed steam guide pipe is respectively provided with reducing guide pipe inside, each reducing guide pipe is respectively provided with expansion mixing pipe, each nozzle and sealing end cap are respectively provided with fixing device, the fixing device includes the limiting pressure sleeve set on nozzle, compression spring, installation slot, first locating ring, locating plate, connecting rod and first adjusting nut. It can be installed to preset position conveniently. The utility model is convenient to use, with extensive market prospect.

The utility model relates to sensor detection technical field, concretely relates to sensor detection machine, include: substrate, along the first direction extension, first direction is perpendicular to vertical direction, pressure -exerting spare, locate in the substrate and be equipped with multiple, each pressure -exerting spare evenly spaced distribution along the first direction, pressure -exerting spare is used for to sensor to add load, vertical drive spare, act on the substrate, for driving substrate along vertical reciprocating movement, signal measurement unit, for with sensor establishes communication connection to obtain sensor after the output signal of load that exerts through pressure -exerting spare, along the width direction of substrate, the side surface of substrate is recessed to form multiple recesses corresponding to pressure -exerting spare inward, each recess evenly spaced distribution along the first direction, along the width direction of substrate, the part of substrate near the end of recess is bent to form multiple limit portion upward, any one recess along the first direction all is equipped with one limit portion in any one side, limit portion is used for the wall portion of cooperation recess to limit pressure -exerting spare along horizontal direction movement.

The utility model relates to the field of washing and protecting articles, and concretely provides a press type washing and protecting bottle self-adapting placing device with integrated anti-theft and anti-opening functions, which comprises a mounting main body, a base, a fixing part and a limiting pressure head are horizontally arranged on the mounting main body, the fixing part is used for limiting the horizontal displacement of the press bottle, the base is used for placing the press bottle, the limiting pressure head is arranged directly above the base, and the spacing between the base and the limiting pressure head is adjustable to adapt to press bottles with different heights, the utility model avoids the horizontal sliding of the press bottle during pressing through the fixing part, cooperates with the base and the limiting pressure head with adjustable spacing to limit the displacement of the press bottle in the vertical direction, can ensure that the press bottle is completely limited on the placing seat, the existence of the limiting pressure head can also limit the upward movement of the pressing part of the press bottle after rotation, and can avoid the opening of the press bottle, and meanwhile, the spacing between the base and the limiting pressure head is increased to give way to the movement of the press bottle in the vertical direction, so that the press bottle is convenient to take out or open the bottle mouth.

The utility model discloses a cold and hot water mixing valve, including mixing cylinder shell, bottom counterweight, valve passage core body, core groove buckle, bottom counterweight with core groove buckle is established respectively in the bottom and top of the inside bottom of shell cavity of mixing cylinder shell, the top of bottom counterweight is equipped with spring groove, is equipped with compression spring in spring groove, valve passage core body pressure is established to compression spring, be equipped with sleeve chassis on valve passage core body, sleeve chassis buckle mounting is established in the bottom of core groove buckle, the top of valve passage core body limit pressure is equipped with sleeve chassis, sleeve chassis top limit pressure is equipped with fixed pressure disc, three passage pipe fittings are embedded on fixed pressure disc, be equipped with three water flow passageways on valve passage core body, the top of core groove buckle is equipped with limit top ring cover. Advantageous effect lies in: not only can effectively mix cold and hot water, can also reduce the overall barycenter, make it more stress, and the better stability, and the stronger sealing.