59results about How to "Stable and reliable pressure" patented technology

The invention discloses a system for supplying steam to an RH refining furnace. The system comprises a self-produced steam supply pipeline and an external grid steam supply pipeline, wherein the self-produced steam supply pipeline comprises a plurality of converter steam drums, a heat accumulator group, a regulating valve group, a moisture removal drum and a temperature sensor. The specific technical scheme of a method for supplying the steam to the RH refining furnace is as follows: 1, in the absence of converters or under the condition that only one converter is used for production, regulating valves perform automatic regulation and quick switching, so that the pressure of the steam can quickly meet the production requirement; 2, under the condition that two or three converters are used for cross production, tests prove that the pressure of the steam supplied by an internal grid to the RH furnace can completely meet the production requirement; 3, a regulation and control scheme is adopted. According to the system and the method, the converter steam can be reliably and directly supplied to the RH furnace, so that the pressure of the steam supplied to the RH furnace is stable and reliable; the problem that the steam carries moisture is solved, and the high-quality converter steam is used by the RH furnace; the system is widely applicable to small and medium-sized converters, and the equipment investment cost is low.

The invention relates to auxiliary equipment for prompting falling of materials in a stock bin, in particular to a stock bin arch-breaking device for eliminating arching of materials in the stock bin, and belongs to the field of material conveying. In modern industrial production, a large quantity of stock bins are needed for storing materials. Due to various reasons, the materials are arched in the stock bins and cannot be discharged out of the stock bins normally, and normal implementation of the functions of the stock bins is severely influenced. The stock bin arch-breaking device comprises a stock bin, an arch-breaking rod, a clamping wheel train and a support, wherein the clamping wheel train at least comprises two opposite clamping wheels; the outer edges of the clamping wheels are of groove structures; the arch-breaking rod is a hollow pipe, is clamped between grooves of the clamping wheels, and is inserted into the stock bin. The arch-breaking rod is clamped by the clamping wheels, and the clamping wheels rotate to drive the arch-breaking rod to enter the stock bin through a through hole formed in the bin wall of the stock bin for performing arch breaking; the stock bin arch-breaking device has the advantages of simple and practical structure, elimination of limitations on the arch-breaking distance, adoption of a plurality of combined arch breaking ways for arch breaking, and the like.

The invention discloses a motorcycle anti-lock braking system performance testing experiment table which comprises a hydraulic loading device, an electronic control cabinet, an experiment table frame, at least one motorcycle main cylinder simulation device and at least one motorcycle wheel cylinder simulation device. The hydraulic loading device and the motorcycle main cylinder simulation devices are communicated through pipelines. The motorcycle main cylinder simulation devices are communicated with a motorcycle braking anti-lock system to be tested through pipelines. The motorcycle anti-lock system to be tested is communicated with the motorcycle wheel cylinder simulation devices. Each motorcycle main cylinder simulation device is provided with a motorcycle main cylinder pressure sensor and a displacement sensor, wherein the motorcycle main cylinder pressure sensor and the displacement sensor are connected with a control circuit of the electronic control cabinet. The motorcycle wheel cylinder simulation devices are provided with motorcycle wheel cylinder pressure sensors. The motorcycle anti-lock braking system performance testing experiment table can automatically test performance of the motorcycle braking anti-lock system.

The invention discloses a test tube rack conveying position sensing device and a tester, the test tube rack conveying position sensing device comprises a bracket, a test tube rack and a sensing mechanism, the sensing mechanism comprises a lever mechanism capable of swinging up and down and an optocoupler, the lever mechanism comprises a lever shaft and a lever fulcrum, one end of the lever shaft end is provided with a positioning structure, the other end of the lever shaft end is connected with the optocoupler, an elastic member for providing an upward force to the lever shaft is connected with the lever shaft between the lever fulcrum and the optocoupler, the test tube rack is provided with a stepped positioning rib, the upper surface of the positioning rib is provided with a groove, and the positioning structure and the groove are matched with each other. The tester comprises a test tube rack conveying position sensing device. The beneficial effects of the test tube rack conveying position sensing device are that the tensile force of a spring is converted into directly-downward force of a press roller to the test tube rack on the basis of the principle of lever, the pressure is reliable, positioning is accurate; an integral structure is used for fixing the press roller and the optocoupler on the bracket, reliability is high, structure is simple, cost is low, and the risk of sampling failure, partial inserting of a sampling needle and damage of the sampling needle can be avoided.

The invention discloses a pumpkin seed meal nutrition breakfast snack food and a preparing method thereof. The pumpkin seed meal nutrition breakfast snack food is prepared from, by weight, 45-55% of pumpkin seeds, 25-35% of flour and 15-25% of corn flour. Under the premise of maintaining the natural characteristics of the raw materials to the maximum and adding no food additive, the novel breakfast food which is green, nutritive and capable of achieving a food therapy effect is studied and developed, and belongs to high-protein and high dietary fiber nutrition food. The food is prepared under the premise that the nutritive ingredients of pumpkin seed meal are not damaged, stability and reliability of the content of dietary fibers in food are ensured, and the product taste is improved. Through automatic control, stability of the temperature, pressure and the like is ensured, stability and reliability of the content of dietary fibers are ensured, and controllability of key points is achieved; meanwhile, the processing time is shortened, and the production efficiency is improved.

The invention provides an immersion test device and test method for simulating a corrosive pressure water environment. The device comprises a bracket, a pressure bearing barrel and a pressure device,a sealing cover is arranged at the top of the pressure bearing barrel through a detachable bolt, the bottom of the pressure bearing barrel is arranged on the bracket, a pressure gauge is connected toa side of the pressure bearing barrel, an upper and lower through liquid discharge hole is formed in a bottom center of the pressure bearing barrel, a liquid discharge pipe is connected to a lower port of the liquid discharge hole, a liquid discharge valve is arranged on the liquid discharge pipe, and the pressure device is connected with the side of the pressure bearing barrel. The immersion testdevice provided by the invention applies different hydrostatic pressures to acid and alkali corrosive water to perform immersion treatment on a rock sample so as to truly and effectively simulate thecorrosive pressure water environment, performs quantitative or qualitative research on the influence degrees and action mechanisms of water pressure, solution ion components, ion concentration, immersion time and the like on water-rock action according to the contrastive analysis of test results of the sample and the solution under different immersion working conditions, makes researches on basicproblems such as microscopic pores, mechanical properties and the like of rocks in the corrosive pressure water environment, and compensates the blanks and deficiencies on the researches of the water-rock action.

The invention relates to a mechanical testing device for breaking a rock by coupling dynamic and static loads with fissure pressure and a method thereof. The device comprises a dynamic load loading device, a static load loading device, a test specimen, an incident rod, a transmission rod, a data acquisition device, a data processing device, a connecting frame, a hydraulic pump, a limiting plate, ahigh-speed microscopic camera, a crack pressure loading head, a steel wire and a pressurization gas bag, wherein the test specimen is provided with a prefabricated fissure; an open end of the prefabricated fissure is provided with the limiting plate; the steel wire passes through two ends of the limiting plate; two ends of the steel wire are provided with steel wire pre-tightening clamps; the pressurization gas bag is mounted in the prefabricated fissure defined by the steel wire and the limiting plate; the pressurization gas bag is provided with the crack pressure loading head; the crack pressure loading head passes through the limiting plate and is connected with the hydraulic pump through a hydraulic pipeline; the high-speed microscopic camera is mounted above the prefabricated fissureof the test specimen; and the high-speed microscopic camera is connected with the data processing device. The device is used for realizing measuring the dynamic mechanical property of a fissure pressure-containing rock mass in a laboratory condition.

The invention relates to a rope guide for an electric hoist, which includes a reel and a rope guide. A steel rope is wound on the reel. The main body is composed of at least 3 guide rope blocks, the guide rope blocks are connected into a ring, the guide rope blocks are connected by steel belts, the guide rope blocks and the steel belt are connected by bolts, the right side of the guide rope block is provided with steps, and the guide rope A rectangular ring groove is arranged on the left side of the block, and a rope pressing post is arranged in the ring groove. A through hole A is arranged on the left side wall of the ring groove, and a blind hole is arranged on the right side wall of the ring groove. The central shaft of the rope block is provided with a through hole B, and a shaft is arranged in the through hole. The present invention solves the problems of disordered ropes when the rope guide of the existing electric hoist is empty and the problem of the steel wire rope jumping when the rope guide moves axially. Compared with the compression method, it also has the advantages of stable pressure, strong and durable, low cost, long life, easy maintenance and wear resistance.

The invention discloses a cargo air pressure fixing system in cold-chain logistics pipeline transportation. The cargo air pressure fixing system is arranged in a cold-chain conveyor; the cold-chain conveyor runs in a cold-chain transmission pipeline; the cold-chain transmission pipeline is configured to be a guide channel of the cold-chain conveyer; a cold-chain cargo compartment is arranged in the cold-chain conveyer; a cold-chain cargo is loaded in the cold-chain cargo compartment; the cargo air pressure fixing system is used for fixing the cold-chain cargo in the cold-chain cargo compartment; the cargo air pressure fixing system comprises an axial cold-chain cargo fixing device, a circumferential cold-chain cargo air pressure fixing device, an end pressing device and a selectively-configurable axial cold-chain cargo partition device; the limitation of a fluid pipeline is broken through the system, so that the pipeline transmission of the cold-chain cargo is realized, the comprehensive protection in the axial direction and the circumferential direction of the cold-chain cargo in the pipeline transportation are further realized, the collision damage is avoided, the flexible partition can be carried out according to the size, the type and the like of the cargos, the cargo capacity is increased, and the space utilization rate and the transportation efficiency are improved.

The invention relates to an intelligent fuzzy control precision servo air pressure balance unloading system. The intelligent fuzzy control precision servo air pressure balance unloading system comprises a balance device, a throttle valve, an energy storage device, a proportional valve and a first pressure adjusting valve, wherein an air way B is connected with the proportional valve through the first pressure adjusting valve, the proportional valve is connected with the energy storage device through the throttle valve, the energy storage device is connected with the balance device through a rapid air discharging valve, the balance device is connected with a second pressure adjusting valve, and the second pressure adjusting valve is connected with an air way A. By means of the intelligent fuzzy control precision servo air pressure balance unloading system, under the condition that loads and the pressure have fluctuations, it can be guaranteed that the stable pressure is provided, and the stability and the rapid follow-up performance of the system are guaranteed.

The invention relates to a scrapped vehicle detachment flexible turnover machine. The scrapped vehicle detachment flexible turnover machine is provided with a base, vertical columns, transverse beams, a carrying frame, a turnover hydraulic cylinder and a clamping hydraulic cylinder, wherein the base is provided with a first hinge seat and a second hinge seat; the vertical columns consist of a hollow vertical column and a lifting vertical column, the lower end of the hollow vertical column is hinged to the first hinge seat through a first pin shaft, and the turnover hydraulic cylinder is connected between the hollow vertical column and the second hinge seat; the carrying frame is fixedly arranged on the lower part of the hollow vertical column, and is provided with two carrying main pipes and a carrying transverse pipe, the carrying transverse pipe is connected between the two carrying main pipes, support rods are respectively arranged at the two ends of each carrying main pipe, a bottom bracket is fixedly arranged at the outer end of each support rod, and the carrying transverse pipe consists of a fixed transverse pipe and a movable transverse pipe; the transverse beams consist of a fixed transverse beam and a movable transverse beam, one end of the fixed transverse pipe is hinged to the top end of the lifting vertical column, the clamping hydraulic cylinder is connected between the lifting vertical column and the fixed transverse beam, and a connecting plate is fixedly arranged on the bottom surface of the outer end of the movable transverse beam, and is connected with a floating press plate assembly. The scrapped vehicle detachment flexible turnover machine is suitable for different models of vehicles, so that the application range is widened.

The invention relates to a mechanical normally-closed pressure valve, which comprises more than twenty parts including a valve body, a sliding plate, a circular sleeve and the like, and is a pressure control valve used in a mechanical pressure machine. In the working state, the valve is opened, when the pressure of a squeezed material in pressure machinery achieves a pressure value set by a spring, the valves of a pressure control valve are pulled open by a delay switch, the squeezed material achieving certain pressure is squeezed out, and therefore the squeezed material can achieve a form base; and when the pressure of the squeezed material in the pressure machinery does not achieve the pressure value set by the spring, the upper and lower valves of the pressure control valve are closed and are in an off working state. The mechanical normally-closed pressure valve has a simple principle, is convenient to use, has a pressure control role and a safety protection role, and is an ideal pressure control device of the mechanical pressure machinery. Compared with the hydraulic system, the mechanical normally-closed pressure valve has the advantages of no environment pollution, simple structure, reliable pressure, safety, durability and low cost.

The invention belongs to the technical field of punching dies and particularly relates to a guide plate type punching die. The guide plate type punching die comprises a lower die base arranged fixedly and an upper die base arranged in an up-down reciprocating mode. The upper die base is provided with a punching head. The lower die base is provided with a female die body. A side guide plate is arranged above the female die body. A fixing plate is arranged above the side guide plate. A through hole is formed in the middle of the fixing plate and internally provided with a movable guide plate. The middle of the movable guide plate is provided with a hole channel. The punching head is slidably matched with the movable guide plate and further sleeved with a polyurethane rubber mat. When the upper die base descends, the polyurethane rubber mat extrudes the movable guide plate to enable the movable guide plate to make contact with a workpiece at first and press the workpiece, and then the upper die base continues to descend to fold the punching head with the female die body, so that the punching action is completed. Compared with a spring, the pressure provided by the polyurethane rubber mat is more reliable; and in addition, the punching head can have a very good guide condition through the movable guide plate, and a thick material can be punched through a small male die.

The invention relates to a device of a laser cutting machine for replacing same gas source quickly. The device comprises a primary inlet gas circuit, wherein the input port of the primary inlet gas circuit is separately connected to at least two branch inlet gas circuits and the output port are separately connected to at least two branch outlet gas circuits; the input port of each branch inlet gascircuit is connected to a gas source; the output port of each branch outlet gas circuit is connected to the input port of a primary outlet gas circuit and the output port of the primary outlet gas circuit is connected to a laser head; an electromagnetic value of the primary inlet gas circuit and a pressure detection valve of the primary inlet gas circuit are arranged on the primary inlet gas circuit; an adjusting valve of each branch inlet gas circuit and a pressure detection valve of each branch inlet gas circuit are arranged on each branch inlet gas circuit; an electromagnetic valve of thebranch outlet gas circuit and a one-way valve of the branch outlet gas circuit are arranged on each branch outlet gas circuit; each branch inlet gas circuit is connected to the electromagnetic valve of the primary inlet gas circuit; and the adjusting valves of the branch inlet gas circuits, the pressure detection valves of the branch inlet gas circuits, the electromagnetic valve of the primary inlet gas circuit, the pressure detection valve of the primary inlet gas circuit, the electromagnetic valves of the branch outlet gas circuits and the one-way valves of the branch outlet gas circuits areseparately connected to a control system through wires. The device has the advantages of being reasonable in design, switching gas sources automatically, switching gas sources without shot-down and the like.

A pressurized medical instrument may include a piston handle system, a locking release system and a pressure display system. The piston handle system may include a piston, a piston seal, a handle and a rear cover. The locking release system may include a push button, a fixed support, a locking block, one or more springs and a slide block. The pressure display system may include a coating, a gauge stand, a lateral board, a gauge stand seal ring, a pressure gauge seal ring, a snapper, a pressure gauge and a rotary Luer conical tapered fitting. The pressurized medical instrument may facilitate rapid boosting operation by two hands, vacuum pumping by two hands and rapid pressure relief by a single hand. The instrument is characterized by ease-of-operation, quick boosting and pressure relief for observing easily the pressure value at different operating angles.

tank. A storage tank with simple structure and improved reliability and safety is provided. Comprising a tank body with a top opening, the top of the tank body is provided with a flange, and the flange plate has a middle hole, and the aperture of the middle hole is smaller than the caliber of the top opening of the tank body; the top surface of the flange plate An upper cover plate and a lower cover plate are provided on the bottom surface, the center lines of the upper cover plate, the middle hole and the lower cover plate are consistent, and the upper cover plate and the lower cover plate are respectively used to close the middle hole; the upper cover plate The top surface of the board is provided with an electric push rod one, the push rod of the electric push rod one passes through the upper cover plate and connects the lower cover plate, and an electric push rod two is arranged between the upper cover plate and the lower cover plate, The push rod of the electric push rod two is connected to the upper cover plate. The invention is convenient to process and has low cost.