281 results about "Choke valve" patented technology

The present application relates to the field of rock mechanics property testing, and discloses a test device for rock shear creep impact disturbance loading. The device comprises a control box, an air compressor, a fixed plate, a pressure sensor, a fixed base, an air cylinder, a speed regulating throttle valve, an anti-rotation rod, an anti-rotation plate and a ram. The control box is connected with the pressure sensor and the air compressor through wires; the loading end of the pressure sensor is connected with the fixed base, and the base is installed on the fixed plate; the rear end cover of the air cylinder is connected with the fixed base, and the piston rod end is connected with the ram; the lower part of the ram is provided with an anti-rotation rod connecting lug, and the anti-rotation rod is fixed with the anti-rotation plate through the connecting lug. The air compressor is connected with the speed regulating throttle valve, the ram reciprocating motion is controlled by adjusting air pressure through the control box, and shear impact disturbance loading is realized. The present application can simulate real disturbance working conditions such as blasting and earthquake, has intelligent regulation and control functions of disturbance frequency and load, and is suitable for rock shear creep impact disturbance test.

The application discloses a refrigeration system and a control method, device, equipment and medium thereof, to provide a refrigeration system coexisting air-cooled refrigeration mode and liquid-cooled refrigeration mode. The system comprises a compressor circulation heat exchange system and a natural cold source circulation heat exchange system for heat exchange through an intermediate heat exchanger. The compressor circulation heat exchange system comprises a throttling valve, a first condenser and at least one compressor connected in sequence on the primary side of the intermediate heat exchanger, one end of the primary side of the intermediate heat exchanger is connected with the throttling valve, and the other end is connected with the common end of the at least one compressor. The natural cold source circulation heat exchange system comprises a pump, an air-cooled heat exchanger, a liquid-cooled heat exchanger and a second condenser connected on the secondary side of the intermediate heat exchanger. The air-cooled heat exchanger and the liquid-cooled heat exchanger are connected in parallel and then connected between the pump and the second condenser. One end of the secondary side of the intermediate heat exchanger is connected with the second condenser, and the other end is connected with the pump.

This invention relates to the field of automated testing technology, and in particular to a production line for the grooving process and valve body testing of a short-pipe throttle valve, including a valve body forming device, a valve body transfer device, and a valve body testing device. The valve body forming device, valve body transfer device, and valve body testing device are all mounted on a frame. This production line integrates a continuous production line with automatic feeding, grooving, water pressure testing, and automatic sorting, connecting discrete manual workstations into an automated process. By replacing "air testing" with "water testing," the physical characteristics of the testing medium (water) are closer to those of the actual refrigerant, and it can more effectively detect defects that are difficult to detect by air testing, such as micro-leakage and insufficient flow.

This invention relates to the field of transformer technology and discloses a transformer with a rapid oil drainage structure, including a transformer body. An oil tank groove is formed on the inner wall of the transformer body. A support frame is fixedly mounted at the bottom of the transformer body, and an auxiliary frame is fixedly mounted at the bottom of the support frame. A motor is fixedly mounted on the inner wall of the auxiliary frame, and a transmission rod is fixedly sleeved on the output shaft of the motor. An oil inlet plate is fixedly mounted on the top of the transmission rod, and the bottom of the oil inlet plate is rotatably connected to the bottom of the inner wall of the oil tank groove. A guide groove is formed on the inner wall of the oil inlet plate. By employing a three-layer oil drainage pipeline consisting of an upper pressure-sensing electric valve, a middle electromagnetic ball valve with a throttle valve, and a lower rotating oil inlet plate and a one-way gear pump, synchronous oil flow can be achieved in emergency scenarios, improving the oil drainage efficiency compared to traditional structures. The lower rotating oil inlet plate, combined with a silicone scraper, can scrape away deposited impurities at the bottom of the oil tank, and the negative pressure suction of the one-way gear pump reduces the residual oil rate.

The compression system (100) has a compressor (150) with an inlet duct (110) and an outlet duct (120) and an anti-surge recirculation loop (140) which may recirculate fluid from the outlet duct (120) to the inlet duct (110) and regulate the flow along the anti-surge recirculation loop (140) through a throttling valve (145). The compression system (100) is further provided with another throttling valve (155) directly located at the compressor outlet flange (112), preferably at a distance from the compressor outlet flange (112) which is less than three times the inner diameter of the outlet duct (120), and a control unit (160) which controls and regulates the opening and closing of the throttling valves (145, 155). The combined control of the opening / closing of the two throttling valves (145, 155) allows to find a stable operating point of the compressor (150) which is on the left of the expecting surge limit line of the machine, extending thus the stable operation conditions of the compressor (150) and protecting the compressor (150) from the risk of surge.

The application discloses a scroll compressor with an oil return mechanism and belongs to the scroll compressor field, which comprises a compressor body, a static disc and a dynamic disc, the end of the compressor body is fixedly connected with the static disc, the compressor body is rotationally provided with the dynamic disc through a bearing and a crankshaft at one end close to the static disc, the side, away from the compressor body, of the static disc is provided with a high-pressure cavity, the high-pressure cavity is internally provided with an oil separator, and the compressor body is provided with a low-pressure cavity at the side of the dynamic disc. The first oil return channel and the throttle valve are arranged at the bottom of the high-pressure cavity, the second oil return channel is matched with the third oil return channel and the sealing channel, two oil paths are formed, the dead-zone lubricating oil can be introduced into the sealing groove by the pressure of the high-pressure cavity, the pressure at the bottom of the sealing strip is provided to lift the sealing strip, the sealing rubber strip is compressed, the sealing strip is tightly attached to the dynamic disc, the sealing property is improved, the leakage is reduced, and the compressor performance is improved.

This utility model provides a throttle valve with a pressure relief structure, comprising: a valve body, wherein an inlet channel, a medium flow channel, and an outlet channel are sequentially connected within the valve body, and a pressure relief channel communicating with the medium flow channel is also provided within the valve body; and a pressure relief assembly, disposed at the end of the pressure relief channel away from the medium flow channel and threadedly connected to the valve body, for switching the pressure relief channel between open and closed states. This solution, by providing a pressure relief channel and a pressure relief assembly, allows for pressure relief before the throttle valve is decommissioned, preventing injury to operators due to excessive residual pressure inside the throttle valve during removal.

The application discloses a transcritical CO2 ultra-high temperature heat pump system and a temperature control method, wherein supercritical CO2 is a high-temperature and high-pressure fluid at the outlet of a gas cooler, throttles to an evaporation pressure, and a large amount of throttling loss exists, which leads to the decrease of the heating energy efficiency ratio of the transcritical CO2 heat pump system, and is not conducive to the best energy-saving benefit of the ultra-high temperature heat pump. In view of the above problems, the application innovatively couples gas-electric dual-drive technology, two-stage compression intermediate cooling technology and mechanical supercooling technology, which can effectively reduce the high-pressure fluid temperature before the throttling valve of the CO2 working medium, reduce the throttling loss, drive the supercritical compressor through the adjustable turbine expander, reduce the power consumption of the compressor, improve the heating energy efficiency of the CO2 heat pump system, and flexibly and efficiently and stably supply steam in a wide range of variable working condition adjustment, improve the full working condition operation efficiency, achieve the purposes of energy saving and emission reduction and production cost reduction, and further widen the application range and application prospect of the high-temperature heat pump system.

The application discloses a real-time control method, a controller and a control system for a hydraulic variable-damping oil cylinder, wherein the control method comprises the following steps: acquiring in real time piston position information and external driving force information of an oil cylinder piston, calculating actual position information, actual speed information and actual acceleration information of the oil cylinder at a current time of the oil cylinder based on the position information and the external driving force information of the piston by using a filter algorithm, obtaining target position information, target speed information, target acceleration information of the oil cylinder at the current time and output force required for forming a target trajectory based on a target trajectory of the oil cylinder, obtaining a closed-loop target output force of a spool control system based on the above information, and calculating target spool position information of a throttle valve spool at the current time based on an actual flow of the throttle valve at the current time and the closed-loop target output force of the spool control system, so that the stability of target trajectory tracking can be ensured.

This invention discloses an automatic fluid mixing device for coiled tubing drilling, belonging to the field of petroleum machinery technology. It includes a water supply line, a mixed fluid outlet line, an intelligent control terminal, a flow meter, a pressure sensor, a skid-mounted unit, a flexible hose, a first connecting pipe, a second connecting pipe, a third connecting pipe, a centrifugal pump, an electric throttle valve, and a drag-reducing agent pump. The water supply line is sequentially equipped with an inlet union, a first butterfly valve, and a filter. The electric throttle valve is located on the first connecting pipe, and the centrifugal pump is located on the second connecting pipe. The mixed fluid outlet line is equipped with a flow meter, a second butterfly valve, a third butterfly valve, and an outlet union. One end of the flexible hose is connected to the drag-reducing agent pump, and the other end is connected to the mixed fluid outlet line. A fourth butterfly valve is located on the third connecting pipe. This invention enables real-time adjustment of pressure and flow rate, as well as precise proportional mixing of the drag-reducing agent, improving the performance of the mixed liquid.

The utility model discloses a kind of loader braking systems, which belongs to the technical field of engineering machinery.It solves the defect that when the whole machine continuously brakes at high frequency, the braking performance of the conventional loader braking system in the prior art is poor and even brake disappears briefly.The main structure includes brake valve, force pump, brake fluid container, switch valve and brake caliper, the brake valve is connected with the signal end of the large cavity of force pump and switch valve respectively, the small cavity of force pump is connected with the piston large cavity of brake caliper through one-way throttle valve, the piston large cavity of brake caliper is also connected with brake fluid container through switch valve, and brake fluid container is also connected with the small cavity of force pump.The utility model is mainly used on engineering machinery such as loader.

The present application belongs to the technical field of fluid intelligent control of numerical control machine tool, in particular to a numerical control machine tool external throttling monitoring system and control method. The system comprises a main liquid supply pipeline, a plurality of throttle valve units, and an integrated base fixedly connected with the inlet of the main liquid supply pipeline. The inside of each throttle valve unit is uniformly distributed with a thin film flow sensing sheet, and the outside is provided with a state indicator lamp for prompting the optimal throttle valve opening position. The method comprises: establishing a unified fluid dynamics and coordinate reference; determining whether the current opening needs to be adjusted based on the flow information and flow field distribution of the in-valve sensing sheet within the effective flow period, and guiding the operator to perform valve position adjustment through the state indicator lamp; and performing reset, recording and conservation strategy at the end of the event to ensure the implementability and reproducibility under different installation attitudes, different machining conditions and environments. The present application realizes adaptive throttling control of the external cooling / lubricating system of the numerical control machine tool, and improves the machining stability and fluid utilization efficiency.

The utility model provides a kind of extruder device for diesel hydrogen desulfurization catalyst production, it belongs to extruder technical field, it includes fixed shell and cylinder, the fixed shell side is connected with cylinder and penetrates, the output end of two cylinder is fixedly connected with transmission plug, the other side of the fixed shell is connected with communicating hole and penetrates, the top of the fixed shell is fixedly connected with support frame, the top of the support frame is fixedly connected with receiving hopper, the bottom of the receiving hopper is connected with conveying pipe and penetrates, the outer surface of the conveying pipe is connected with electric throttle valve and penetrates.The utility model adds control screen and electric heating tube to fixed shell, control screen is delivered to the inside of electric heating tube, when electric heating tube inside resistance wire via electric heating effect, heat is continuously delivered to the inside of fixed shell to heat catalyst, prevent catalyst freezing and affect catalyst extrusion effect.

This utility model discloses a hydraulic circuit for a roll edge heating device, including a cylinder connected to a heating head. The hydraulic circuit of the cylinder is equipped with an electromagnetic directional valve for controlling the forward and backward movement of the cylinder. A pressure reducing valve (P port) and an A port pressure reducing valve (A port) are also installed on the P port of the hydraulic circuit. A pressure sensor A is located near the A port pressure reducing valve, and a pressure sensor B is located near the cylinder itself. A proportional throttle valve is located near pressure sensor A. This structure and method change the design concept, achieving automatic calibration of the zero-position gap between the electromagnetic heating head and the roll from the hydraulic circuit. This makes operation more convenient and provides precise positioning. After calibration, there is no need to contact the roll each time, ensuring safe and reliable use.

The utility model relates to chip testing technical field discloses a high and low temperature air generating device for chip test, including air inlet pipe, air outlet pipe, first branch pipe, second branch pipe, first throttle valve, second throttle valve, air heater, vortex tube and flow channel temperature sensing element, first branch pipe, second branch pipe are in parallel and are established between air inlet pipe and air outlet pipe, the end of air inlet pipe is equipped with gas source interface, first throttle valve and air heater are connected in first branch pipe in proper order, second throttle valve and vortex tube are connected in second branch pipe in proper order, vortex tube has air inlet interface and cold gas interface and is connected with second branch pipe respectively, the end of air outlet pipe is equipped with test seat interface, and flow channel temperature sensing element is installed in air outlet pipe close to test seat interface, controller is connected with first throttle valve, second throttle valve, air heater and flow channel temperature sensing element electricity respectively. The parallel arrangement of double branch roads can convert pressure gas source into high temperature air or low temperature air, and the accurate reliable of chip test environment temperature is ensured.

The present application provides a vapor compression heat pump and compression-ejection heat pump system, belonging to the technical field of heat pump. The compressor has a refrigerant vapor passage connected with a heat supplier, the heat supplier also has a condensate pipeline connected with a distribution chamber through a nozzle, the distribution chamber has a refrigerant vapor passage connected with the high-pressure steam inlet of an ejector, the distribution chamber also has a condensate pipeline connected with an evaporator through a throttle valve, the evaporator also has a refrigerant vapor passage connected with the low-pressure steam inlet of the ejector, the ejector also has a medium-pressure refrigerant vapor passage connected with the compressor; the heat supplier also has a heated medium passage connected with the outside, the evaporator also has a low-temperature heat medium passage connected with the outside, forming a vapor compression heat pump.

The utility model discloses throttle valve outer slide sleeve sealing structure, including outer slide sleeve, valve cover, disc spring, packing ring no.

The utility model discloses an embodiment relates to a kind of battery clamp air path structure and battery processing device, the utility model discloses battery clamp air path structure includes clamping structure, first exhaust throttle valve and solenoid valve, and through the collaborative control of solenoid valve and first exhaust throttle valve, inside air pressure is maintained using one-way conducting valve when power failure or gas failure, ensure that clamping force is not lost, with the advantage that clamping state is automatically maintained when power failure or gas failure suddenly, avoid the security risk caused by battery falling.

The application discloses an integrated-amplifier single-feedback closed-loop proportional throttle valve and relates to the technical field of throttle valve production.The integrated-amplifier single-feedback closed-loop proportional throttle valve comprises a main valve, a pilot proportional valve, a displacement sensor and an amplifier, and a single-feedback closed-loop control of the displacement of a main valve core is formed through built-in oil paths and electrical signal feedback.Based on the integrated design of the threaded plug-in type of the main valve and the pilot proportional valve, the integrated amplifier and the displacement sensor are taken as cores to construct a single-feedback closed-loop control loop, the slide valve structure of the pilot proportional valve is matched with accurate electromagnetic control, the flexibility and the anti-sticking ability of the valve core movement are obviously improved, the technical difficulties of the complex structure and the easy sticking of the traditional double-feedback proportional throttle valve are effectively solved, accurate proportional throttle control under the high-pressure large-flow working condition is realized, and the integrated-amplifier single-feedback closed-loop proportional throttle valve has the obvious advantages of compact structure, fast response, strong anti-pollution ability and high reliability.

The present application relates to the technical field of air energy storage, and particularly relates to a compressed air energy storage system and a preheating control method for preventing water and salt precipitation, which comprises a preheater arranged between the outlet end of a gas storage and the inlet end of a throttle valve. The preheater is arranged between the outlet end of the gas storage and the inlet end of the throttle valve, so that the high-pressure air extracted from the gas storage is first raised from the initial temperature T1 to the target temperature T2 before entering the throttle valve, thereby improving the ability of the high-pressure air to carry water and salt before throttling. At the same time, by controlling the air after preheating and throttling to satisfy M2>M3>=M1 and N2>N3>=N1, the maximum water content and the maximum salt content of the air after throttling are still greater than or equal to the actual water content and the actual salt content of the air extracted from the gas storage, thereby avoiding the water and salt precipitation of the high-pressure air during the throttling process.

The utility model discloses a cooling liquid water distribution device belongs to liquid cooling device field. The water outlet throttle valve and water inlet throttle valve of cooling liquid water distribution device include: valve seat and valve core, valve seat is equipped with main water mouth and shunt water mouth, a plurality of valve core install in valve seat, and valve core is matched with shunt water mouth, and valve core is used for adjusting the flow of corresponding shunt water mouth, and main inlet pipe communicates with water outlet throttle valve, and shunt outlet pipe communicates with water outlet throttle valve, and shunt inlet pipe communicates with water inlet throttle valve, and main outlet pipe communicates with water inlet throttle valve, and water outlet throttle valve and water inlet throttle valve are installed with exhaust switch respectively, and main inlet pipe is installed with pressure detector and temperature detector, and shunt inlet pipe is installed with flow detector. The utility model only needs to install valve seat as throttle valve to realize the flow regulation of multiple shunt water mouths, need not make the valve seat connection of multiple throttle valves, solve the problem that the connection process between the valve seat of multiple throttle valves of prior art is complex.

The present application provides a catalyst regeneration energy recovery heat pump system, belonging to the technical field of heat pump. The outside has an air channel connected with an internal combustion engine through a compressor and a high-temperature heat exchanger, and has a fuel channel connected with the internal combustion engine. The internal combustion engine has a gas channel connected with the outside through a high-temperature steam generator and a low-temperature steam generator. A second compressor is connected with a heat supplier. The heat supplier is connected with the low-temperature steam generator through a booster pump and is connected with an evaporator through a throttle valve. The evaporator is connected with a jet pump low-pressure port. The low-temperature steam generator is connected with a jet pump high-pressure port. The jet pump is connected with the second compressor. A liquid medium pipeline is connected with the second jet pump high-pressure port through a second booster pump and the high-temperature steam generator. A heated medium channel is connected with the second jet pump low-pressure inlet through the heat supplier. The second jet pump is connected with the outside. The internal combustion engine has a cooling medium channel. The high-temperature heat exchanger has a high-temperature heat medium channel. The evaporator has a low-temperature heat medium channel connected with the outside, forming an energy-carrying internal combustion engine combined cycle heat pump system.

The present application relates to the technical field of pentane application, and particularly relates to a pentane application system and a control method, which comprises a pentane storage tank used for storing liquid pentane, a liquid supply assembly in communication with the pentane storage tank, a gasifier in communication with the liquid supply assembly, the liquid supply assembly being capable of conveying the liquid pentane in the pentane storage tank into the gasifier, and a heating assembly comprising a heating medium inlet pipeline and a heating medium outlet pipeline in communication with each other, the heating medium inlet pipeline and the heating medium outlet pipeline being both arranged on the gasifier, a pressure sensor arranged on the gasifier and electrically connected with the electric control throttle valve. The present application can ensure the continuity of production, thereby ensuring the cutting efficiency and improving the safety of pentane gasification.

The present application relates to dispensing equipment manufacturing technical field, especially a flow control choke valve. The valve body is provided with a shunt cavity, a mixed flow channel, an air inlet channel and a process docking flow channel; the air inlet channel is communicated with the shunt cavity; the process docking flow channel is communicated with the mixed flow channel, used for providing vacuum or normal pressure environment to the downstream; the piston is coaxially assembled in the shunt cavity; the mixed flow channel is oppositely arranged with the end surface of the piston; the control gas path is used for regulating the axial position of the piston; when the piston is at the axial limit position, the end surface and the inlet of the mixed flow channel are mutually attached, and the flow channel passage is cut off; when the piston is at the axial non-limit position, the end surface and the inlet of the mixed flow channel form a flow opening; when the axial position of the piston changes, the flow opening changes. Through the distance change between the piston end surface and the mixed flow channel inlet, a continuous variable flow opening is formed, so as to realize stepless adjustment of the gas path flow cross section, and adapt to the air pressure supply requirements of multiple types of dispensing stations.

A method for determining at least one volume flow rate in an apparatus for a hydraulic system, including the steps of: determining a temperature of the medium in the reservoir, determining a total volume flow rate conveyed by the hydraulic pressure source in the first hydraulic line depending on the temperature, determining a first partial volume flow rate discharged into the reservoir through the pressure-limiting valve, and determining a second partial volume flow rate through the aperture and the throttle to the device as a difference between the total volume flow rate and the first partial volume flow rate.

The application relates to the technical field of heat pump heating, and discloses a heat pump heating device, which comprises a processing box body, a liquid inlet pipe is fixedly connected to the top end of the processing box body, a heat pump body is arranged on one side of the processing box body, a conveying pipe is fixedly connected between the processing box body and the heat pump body, the heat pump body comprises a compressor, an evaporator, a condenser and a throttle valve, two filter screen plates are arranged in the processing box body, a shunt assembly is arranged above the two filter screen plates, the shunt assembly comprises a rotatable flow guide plate, the position and the angle of the flow guide plate are adjusted by rotating the flow guide plate, so that the flowing path of the water source in the processing box body is flexibly controlled, the flowing path of the water source in the processing box body is dynamically adjusted by the shunt assembly, the two filter screen plates are alternately used, the water source is ensured to be always filtered effectively through the alternate switching, and the stability of the heating system is maintained.