11results about How to "Security pressure" patented technology

The utility model relates to the technical field of sound equipment, and discloses a fixed connection structure and a sound equipment plastic shell thereof, the fixed connection structure comprises a female head and a male head, a limiting assembly is arranged between the female head and the male head, the limiting assembly comprises a clamping block, a connecting body, an anti-falling groove and a squeezing and pushing plate, the clamping block is elastically connected with the male head through the connecting body, and the bottom surface of the clamping block is provided with clamping teeth. A plurality of connecting bodies are arranged on the wall face of the female head, the extruding and pushing plate is fixedly connected with the female head, the bent part of the extruding and pushing plate gradually abuts against the connecting bodies along with sliding of the male head, the connecting bodies are extruded and pushed by the extruding and pushing plate to deform and bend, the clamping teeth of the clamping block are pushed into the other adjacent anti-disengaging groove by the connecting bodies, and then elastic connection between the clamping block and the male head can be achieved. A certain pressure can be guaranteed to be applied to the sealing ring, the sealing effect is further guaranteed, meanwhile, the device can adapt to sealing rings with different thicknesses within a certain range, and the extruding and pushing plate extrudes and pushes the connecting body and can also apply a pressure perpendicular to the female head to the clamping block, so that clamping connection between the clamping teeth of the clamping block and the anti-disengaging groove is more stable.

The utility model provides a kind of self-adapting multi-thickness packaging material printing's intaglio printing machine, it is related to printing machine technical field, including bottom plate, further include: self-adapting printing assembly, self-adapting printing assembly includes support seat connected on bottom plate, support seat is provided with moving seat inside, servo motor is installed on moving seat, in the utility model, servo motor drives rubber roller rotation, cooperation plate cylinder is completed printing, when material thickness changes, moving seat slides along guide rod, telescopic spring is adaptively buffered adjustment, simultaneously, first rotating block is linked with second rotating block, auxiliary moving seat stable displacement, ensure that rubber roller and plate cylinder pressure adaptation, in auxiliary printing assembly, the scraper supported by support plate is close to plate cylinder, scrapes extra ink, guide rod guarantees that moving seat slides smoothly, fixed seat provides fulcrum for rotating block, realizes the self-adapting stable printing to different thickness materials, guarantees pressure adaptation and printing quality.

This invention relates to the field of carbon fiber preforming technology, and discloses a fixture and processing method for air-blown preformed carbon fiber wheel rims. The fixture includes: a lower mold, an upper mold snapped onto the top of the lower mold, a cavity inside the lower mold, a power pump on the outside of the lower mold, a mating groove inside the lower mold, multiple flexible arc-shaped blocks inside the cavity, a flexible column fixedly mounted on the top of each flexible arc-shaped block, and a small airbag fixedly mounted on the top of each flexible column, all positioned within the cavity formed by the upper and lower molds. This invention addresses fixture reliability issues through mechanical interlocking, strict and uniform low-pressure mold locking, and an irreversible safety process of adaptive high-pressure molding. Furthermore, the intelligent following of the mold locking force with internal molding pressure and dynamic matching of internal and external pressures ensure both safety and energy efficiency. Finally, the sensing and feedback of the gridded airbags enable adaptive and uniform pressure application to complex wheel rim cross-sections.

The utility model discloses a remote active sand supply mechanism, which relates to the technical field of water cutting and comprises a support leg, an automatic sand supply mechanism is arranged on the surface of the support leg, and a sand quantity control mechanism is arranged on the surface of the automatic sand supply mechanism. The inlet connector is connected with a sand conveying pipe, grinding materials enter the valve body through the connecting base, enter the sand conveying pipe through the sand outlet and are finally sprayed out through the tool bit, meanwhile, the air injection port is externally connected with an air injection pipe, when sand supply needs to be stopped, the air pump injects air into the connecting block, the movable column is pushed to move downwards, the plug body moves downwards at the moment to plug the sand outlet, and the sand supply is stopped. And meanwhile, the spring on the surface of the plug body is stretched, when the abrasive needs to be supplied, the air pump stops air injection, the spring rebounds to enable the movable column to drive the plug body to be separated from the sand outlet, then the abrasive can be normally supplied, and the adaptability of the device is improved.

The utility model discloses a novel precombustion chamber belongs to engine technical field, solved the problem that existing precombustion chamber check valve is easy to fail. The precombustion chamber includes precombustion chamber body and with the lower end of precombustion chamber body connection's precombustion chamber nozzle, precombustion chamber nozzle inside be provided with precombustion chamber, precombustion chamber body top side be equipped with check valve mounting hole, check valve mounting hole inside be equipped with check valve, check valve one side top be equipped with air inlet section, check valve other side bottom be equipped with air outlet section, air inlet section, air outlet section with check valve mounting hole inner wall between respectively be equipped with air inlet flat channel and air outlet flat channel, check valve inside be equipped with connecting hole, connecting hole bottom be equipped with air inlet hole, air inlet hole diameter is less than connecting hole, air inlet hole top be equipped with first sealing ball. The utility model discloses a novel precombustion chamber can effectively improve the leakproofness to avoid precombustion chamber gas backflow, improve gas engine performance.

The invention discloses a CO2 efficient burying and reinjection system and method based on liquid phase injection, and belongs to the technical field of liquid phase CO2 reinjection. The system comprises a pipe tank precooling system, a first-stage injection pipeline supercooling system, a pipeline overpressure bypass pressure relief system, a pressurizing medium backflow pressure supplementing system and an underground plug removal injection system. The problems that a first-stage injection pipeline is vaporized, overpressure is directly released after stopping transportation, the pressure of a storage tank is too low in the middle and later periods of reinjection, and underground blockage is caused during reinjection can be effectively relieved.

The present invention relates to the technical field of scale inhibitor injection, and in particular to a hydrogenation scale inhibitor anti-high temperature cavitation injection structure. It includes a storage shell, an oil slurry pipe is installed with a fixed cover, a chamber is arranged in the fixed cover, an injection shell is fixedly connected to the storage shell, an electric control telescopic rod is fixedly connected to the storage shell, an injection plate is fixedly connected to the telescopic end of the electric control telescopic rod, and the injection plate is fixedly connected to a one-way plate through a connecting rod, a bleed valve is fixedly connected to the fixed cover, a heat conducting rod is slidably connected in the fixed cover, and the fixed cover is fixedly connected to an injection pipeline. The present invention heats the scale inhibitor liquid by the heat conducting rod, and then injects the heated scale inhibitor liquid into the oil slurry pipe through the injection pipeline, so that the scale inhibitor liquid has a certain pressure and the temperature is close to that of the crude oil, reducing the generation and rupture of bubbles during the injection of the scale inhibitor liquid, thereby reducing the generation of cavitation, and further reducing the risk of oil slurry pipe rupture.

The invention relates to a sand-proof oil-gas separator for a screw drill, comprising an outer tube, an adapter sleeve, an inner tube, a sand filter assembly and an exhaust assembly; the inner tube is concentrically arranged inside the outer tube, the lower end of the adapter sleeve is sleeved and fixed on the outer side of the upper end of the inner tube and inserted into the inner side of the upper end of the outer tube, the exhaust assembly is arranged between the adapter sleeve and the outer tube, and the sand filter assembly is arranged on the lower outer side of the inner tube and inside the outer tube; the invention separates a sand removal channel and a gas removal channel to prevent the oil flow in the pipeline from becoming smaller, thereby effectively ensuring the normal transportation of the oil, without the need for frequent shutdown and cleaning, thereby improving work efficiency.

This disclosure relates to a method and system for storing cryogenic liquefied hydrocarbons. The method includes: storing liquefied hydrocarbons in an inner tank (1) of a liquefied hydrocarbon storage tank, wherein a sealing port (8) is provided at the top of the side wall of the inner tank; introducing a first portion of nitrogen gas into the top of an annular space (3) located outside the inner tank to form a nitrogen gas curtain outside the sealing port of the inner tank; and introducing a second portion of nitrogen gas into the bottom of the annular space to allow hydrocarbon-containing gas in the annular space to return to the inner tank through the sealing port. This disclosure can return hydrocarbon-containing gas in the annular space to the inner tank through the sealing port, minimizing the partial pressure of hydrocarbon-containing gas in the annular space, preventing hydrocarbon-containing gas from condensing at low temperatures, and ensuring the pressure safety of the storage tank; it can also prevent hydrocarbon-containing gas in the inner tank from entering the annular space through the sealing port under the pressure of the nitrogen gas curtain, further improving the safety of the storage tank.

The present invention relates to a device for separating lubricating oil contaminants from an internal combustion engine. The device is provided with a filter core at the bottom, and a rotor centrifugal separator driven by the flowing lubricating oil is provided at the top of the filter core. The rotor centrifugal separator and the filter core are arranged up and down in a common, two-body housing that is closed during the operation of the device. The housing is composed of a removable spiral upper cover and a fixed lower shell. A spiral lower cover is arranged in the lower shell between the rotor centrifugal separator and the filter core. The spiral lower cover divides the device into an upper and lower closed cavity. The spiral upper cover and the spiral lower cover are independently connected to the lower shell with threads. The spiral upper cover and the spiral lower cover of the device form a mutually independent closed space, and there is no complex meshing structure between the two. The structure is simple and stable, and the production and processing cost of parts is low. The high-voltage pulse generated in the closed cavity below the spiral lower cover will not be transmitted to the spiral upper cover, and the operation is more stable.