46results about How to "Avoid unexpected breakdowns" patented technology

The invention relates to a valve special for an offshore oil drilling platform, in particular to a flange joint two-plate flow guide zinc alloy perpendicular one-way valve. The flange joint two-plate flow guide zinc alloy perpendicular one-way valve comprises a flange head valve body, an upper flow guide body, a cavity sleeve, a moving valve element, a lower flow guide body and taper hole glands which are symmetrically arranged in an up-and-down mode. An upper sealing outer circle of an upper circular cone cylinder is equal to a lower sealing outer circle of a lower circular cone cylinder on the moving valve element and the outer circles are in interference fit with an inner circle of the cavity sleeve to form a sealed annular cavity. Thus, the whole proportion of the moving valve element is between the sea water proportion and the oil proportion and the moving valve element can move in the medium flowing direction. An extra one-way valve which consumes energy is not needed in the whole working process. An outer circle of a cylindrical valve rod on the upper flow guide body is matched with an inner circle of a lower flow guide unthreaded hole of the plane end of the lower flow guide body in a sliding mode. An assembly gap is formed between the bottom end of the lower flow guide unthreaded hole and the lower end face of the cylindrical valve rod. The machining precision requirement is lowered and assembly is facilitated.

The invention relates to a special valve for an offshore oil drilling platform, a vertical one-way valve of an externally threaded three-plate guide aluminum alloy, which includes an externally threaded valve body, an upper guide, a pair of half-open cylinders, a movable valve core, and a lower guide. Fluid and taper hole glands arranged symmetrically up and down, the thickness of the single plate for positioning the lower three plates is 6 to 7 mm, between the sealing surface of the upper cavity of the moving valve core and the sealing surface of the lower cavity, a pair of half-open cylinders are fixed in a closed fit A closed annular cavity is formed, so that the overall specific gravity of the moving valve core is between the specific gravity of sea water and the specific gravity of oil, and it can move with the flow direction of the medium. It is a one-way valve that does not need to consume any additional energy during the whole work; the inside of the valve body There are no intermediate objects such as springs that may cause large resistance losses, and are especially suitable for use in mucus or torrent pipelines; it avoids accidental failures caused by the bias or failure of the damping spring that cannot withstand the torrent impact, prolongs the service life, and directly Benefits and indirect benefits are objective.

The invention discloses a maintenance decision-making method for an aircraft bleed air pressure regulating valve. The method comprises: step 1, initializing parameters; step 2, counting the use history of each component, and analyzing a reliability sample; step 3, analyzing a function relationship among various maintenance costs of the aircraft bleed air pressure regulating valve; step 4, evaluating the reliability distribution of the aircraft bleed air pressure adjusting valve; step 5, calculating the maintenance cost rate and availability of the aircraft; step 6, establishing a multi-objective planning model; step 7, converting the multi-objective planning model into an unconstrained optimization problem; step 8, carrying out iterative solution on the unconstrained optimization problem;step 9, judging whether the iterative computation meets an end condition or not, if so, turning to step 12, and otherwise, turning to step 10; step 10, updating a Lagrangian multiplier penalty factor;step 11, updating the multiplier parameters, and turning to step 8; and step 12, analyzing the rationality of the maintenance decision of the aircraft bleed air pressure regulating valve.

The invention relates to a sea water desalting apparatus and specifically relates to a titanium alloy flange apparatus for man-powered fresh water generation for island reefs. A primary output shaft is fixedly connected with a coupling input flange of a tetragonal-extension titanium alloy flange coupling; the tetragonal-extension titanium alloy flange coupling passes through a transmission pipe sealing hole formed in a partition wall from inside to outside; a coupling output flange of the tetragonal-extension titanium alloy flange coupling is fixedly connected with a single-stage pump input shaft of a single-stage centrifugal pump; a lifting water inlet pipe of the single-stage centrifugal pump is connected with a seabed water filter; a lifting water outlet pipe of the single-stage centrifugal pump pass through a water pipe sealing hole formed in the partition wall from outside to inside and then is connected to a pretreatment standby tank; a multi-stage pump suction pipe is connected with the pretreatment standby tank, while a multi-stage pump discharge pipe is connected with a front osmotic membrane chamber of an reverse osmosis membrane assembly; a rear osmotic membrane chamber of the reverse osmosis membrane assembly is orderly connected to an active carbon adsorption tank and a fresh water storage tank; a vertical flange backstop is connected in series to the lifting water inlet pipe; and horizontal flange backstops are connected in series to both of the multi-stage pump suction pipe and the multi-stage pump discharge pipe.

The invention relates to a special valve matched in a pipeline which is used in an oil field and specially used for conveying crude oil, and provides a horizontal flange connector copper alloy valve with a four-vane connection rib and a deformation runner. The horizontal valve comprises a cylinder shaft, a swing valve element, a flange connector valve body, a fastening screw and an outer end cover. According to the improvement, the outer end of an outlet elbow and the outer end of an inlet elbow of the flange connector valve body are provided with connecting flanges, the outer ends of the connecting flanges are provided with flange sealing planes provided with four to eight through bolt holes, the lining plate face side of the valve element inlet of a fan-shaped cylinder body of a valve element is provided with an annular runner opening, the lining plate face side of the valve element outlet of the fan-shaped cylinder of the valve element is provided with a round runner opening, the deformation runner is arranged between the annular runner opening and the round runner opening in a communicated mode, the four-vane connection rib is arranged between the deformation runner cone part contained by the deformation runner and the fan-shaped cylinder body of the valve element in a connecting mode, a plane hardness layer of the valve body inlet and a plane hardness layer of the valve body outlet are made of hard corrosion-resistant copper alloy materials, and the thickness of a single vane of the four-vane connection rib is 1 / 16 to 1 / 18 the diameter of the round runner opening.

The invention relates to seawater desalination equipment and particularly relates to a zinc alloy internal thread reef seawater desalination device. An indoor entertainment device shaken by single hand is used for driving a primary gearbox to rotate at a high speed; a transmission pipe sealing hole which penetrates through a separating wall from inside to outside via a zinc alloy internal thread triangle extension coupler is used for driving a single-stage centrifugal pump to obtain seawater from a seabed water filter via a lifting water inlet pipe; the obtained seawater passes through a lifting water outlet pipe and a water pipe sealing hole penetrating through the separating wall from outside to inside and then is connected into a pretreatment standby tank; an indoor entertainment device shaken by double hands is used for driving a multi-stage centrifugal pump to rotate at a high speed; a water absorption pipe of the multi-stage pump is connected to the pretreatment standby tank; a water outlet pipe of the multi-stage pump is connected with a front osmosis membrane cavity of a reverse osmosis membrane assembly; the strong saline water intercepted by the reverse osmosis membrane assembly is discharged in a pressure maintaining manner; the fresh water passing through the reverse osmosis membrane assembly flows out of a rear osmosis membrane cavity and then flows into an activated carbon adsorption tank to be treated so as to obtain the standard drinking water conforming to the domestic drinking water standard; finally, the standard drinking water is sent into a fresh water storage tank and is supplied to people on a reef to daily drink.

The invention discloses a variable pressure supercharging system of an engine, which includes a protection system, an air intake system, an air inlet, a supercharging module and an execution module, the protection system includes a supercharging shell, a supercharging module bracket and an execution module bracket, and the The left side of the air system is provided with an air inlet, and the right side of the air intake system is provided with a booster shell, and the inside of the booster shell is fixedly connected with a booster module and an executive module through the booster module bracket and the execution module bracket from left to right. . In the present invention, by setting the air intake system, when the engine stops working, it can prevent the right insects or other air floating objects from flying into the engine air intake, and avoid unexpected failures when the engine starts to work. By changing the opening angle of the blades, the Changing the amount of intake air can reduce the number of turbocharging structures used in the vehicle, and use a single turbo to achieve the supercharging effect of twin turbos. At the same time, it also reduces the weight of the vehicle, making the vehicle more energy-saving and environmentally friendly when driving.

The invention relates to a special matching valve in a pipeline specially used for delivering crude oil in an oilfield. Hoop lower half slips and hoop upper half slips are assembled in pair and fastened through two sets of bolts and nuts to form fast detaching structures outside a valve body. According to the adopted technology, the titanium alloy five-blade connecting rib horizontal check valve of a hoop joint comprises a cylindrical shaft, a swing valve element, a hoop joint valve body, fastening screws and outer end covers. The titanium alloy five-blade connecting rib horizontal check valve of the hoop joint is characterized in that the outer end of an outlet elbow and the outer end of an inlet elbow on the hoop joint valve body are respectively provided with a valve pipe plane, a valve pipe frustum face is arranged on the inner side of each valve pipe plane, the ends of external pipeline joints are provided with pipeline planes to be tightly attached to the valve pipe planes, and the inner sides of the pipeline planes of the external pipeline joints are pipeline frustum faces and correspond to the valve pipe frustum faces; the hoop lower half slips and the hoop upper half slips which assembled in pair and fastened through the two sets of bolts and nuts are provided with valve pipe conical hole faces and pipeline conical hole faces to be matched with the valve pipe frustum faces and the pipeline frustum faces; the single-blade thickness of five-blade connecting ribs is 1 / 21 to 1 / 19 of the diameter of a round flow channel opening.

The invention relates to a special valve for an offshore oil drilling platform, and particularly to a copper alloy five-connecting-rib check valve of a flange connector. The check valve comprises a lower flange head hemisphere casing, an upper flange head hemisphere casing, a cylindrical pipe and a variable flow cavity valve core, wherein four sets of valve casing bolts and nuts are sealed, positioned and fixed between a lower four-lug on the lower flange head hemisphere casing and an upper four-lug on the upper flange head hemisphere casing, a deformed flow channel passes through the space between a valve core annular hole in the lower spherical surface of the valve core and a valve core circular hole in the upper spherical surface of the valve core, and five diversion supporting plates are arranged on the deformed flow channel; the inner side surfaces of the five diversion supporting plates are fixedly connected with the valve core cavity wall of the variable flow cavity valve core, and the outer side surfaces of the five diversion supporting plates are fixedly connected with the excircle inner side wall of the variable flow cavity valve core; the deformed flow channel gradually changes into the valve core circular hole in the upper spherical surface of the valve core from the valve core annular hole in the lower spherical surface of the valve core so as to ensure that the variable flow cavity valve core moves up and down relative to the cylindrical pipe and can do unidirectional circulation at the same time.