156 results about "Bypass valve" patented technology

The invention relates to a paraffin type thermostat. The paraffin type thermostat comprises a main valve 1, a cover and seal gasket assembly 2, an upper support 3, a rubber pipe 4, a valve seat 5, a vent hole 6, a lower support 7, paraffin 8, an inductor 9, a bypass valve 10, a central rod 11 and a spring 12. The upper support, the lower support and the valve seat of the thermostat are riveted into a whole. The upper end of the central rod is fixed to the center of the upper support. The lower portion of the central rod is inserted into a central hole of the rubber pipe. The lower end of the central rod is conical. A cavity between the rubber pipe and a shell of the inductor contains the paraffin. The upper portion and the lower portion of the shell of the inductor are provided with the main valve and the bypass valve which are in linkage. The vent hole is formed in the main valve. The paraffin type thermostat is high in heat conductivity and guarantees that an engine cannot be excessively cold.

This utility model relates to the field of drilling technology for soil or rock layers, specifically to a one-way bypass valve for a screw drill and the screw drill itself. The drill includes a one-way bypass valve for unidirectional drilling fluid flow. The one-way bypass valve includes a valve body with a valve sleeve inside its inner bore. A one-way valve is located at the outlet end of the valve sleeve. The one-way valve includes a one-way valve seat with a support plate at the end furthest from the valve sleeve. The support plate has a drain hole for drilling fluid passage. A compression spring is also provided on the support plate, and a valve block is located at the other end of the spring. The one-way valve seat has a shoulder near the valve sleeve to stop the valve block. The spring force causes the valve block to abut or disengage from the shoulder, thus closing or opening the one-way valve seat. The compression spring in this utility model is positioned below the valve block, preventing the valve block and spring from being washed away by the drilling fluid with significant impact force, thereby improving the reliability of the entire device.

This application provides an integrated oil-cooled structure, an electric drive system, and a vehicle. The system includes an oil cooler with an internal bypass oil passage, and an oil inlet and outlet connected to the bypass oil passage. A bypass valve includes a valve core assembly and a connector. At least a portion of the valve core assembly is located within the bypass oil passage. One end of the connector is connected to the valve core assembly, and the other end abuts against the bypass oil passage. The valve core assembly is located on the bypass oil passage near the oil inlet. When the amount of oil entering the bypass oil passage through the inlet does not exceed a preset value, the bypass oil passage is in a conducting state. When the amount of oil exceeds the preset value, the valve core assembly moves to switch the bypass oil passage to a closed state. This integrated design minimizes the overall structure and reduces the number of oil passages and interface seals.

A cooling system for an aircraft fuel cell system includes a coolant pump to circulate coolant through the cooling system and a radiator to reject heat to ambient air. A cooler zone is provided downstream of the radiator, comprising a plurality of parallel cooling branches. A warmer zone is provided downstream of the cooler zone, the warmer zone including a fuel cell stack. A bypass valve is arranged to provide coolant to the warmer zone from upstream of the radiator. A restrictor may be arranged to provide coolant to the warmer zone from downstream of the radiator.

The application discloses a kind of magnetic suspension ORC units and control method, it is related to low-temperature waste heat power generation technical field;The unit includes magnetic suspension motor, turbine, evaporator, preheater, condenser, liquid storage tank, working medium pump and control system;Magnetic suspension motor is coaxial direct connection with turbine, and constitutes oil-free integrated closed structure;Control system includes PLC controller, four-quadrant frequency converter, turbine inlet regulating valve, hot gas bypass valve and sensor assembly;PLC controller inside preset turbine performance curve and working medium property model, configured to: real-time calculation turbine import and export pressure ratio, query performance curve to determine the best speed target value, through adjusting turbine inlet regulating valve control magnetic suspension motor speed track the target value.The application solves the problems of large mechanical friction loss, high maintenance cost and low variable condition efficiency of existing ORC unit, and realizes efficient and stable operation of the unit under wide operating conditions through collaborative control strategy.

The present application relates to waste heat boiler technical field, especially to a kind of method for adjusting waste heat boiler outlet process gas temperature;Technical problem: the thermal expansion, friction increase, component jam and valve rod fracture problems that adjusting valve in prior art are prone to occur under high temperature environment;Technical scheme: a kind of method for adjusting waste heat boiler outlet process gas temperature, using the improved waste heat boiler center tube bypass valve, process gas temperature is controlled by adjusting valve opening degree;The present application is by lengthening center tube to reduce weight and shorten valve core length;Valve core is upgraded to spherical surface structure, is transformed into live head type, and there is thermal expansion gap;Increase guiding support structure to avoid cantilever beam effect;Improved sleeve structure ensures medium flow-through;The stability and durability of valve under high temperature environment are improved, the thermal expansion, friction increase, component jam and even valve rod fracture problems that traditional valve is prone to occur are solved, and the production stability of device is greatly enhanced.

The present invention relates to a fail-safe bypass valve assembly (1) for a pneumatic parking brake unit (120) of an electronically controllable pneumatic braking system (100), comprising: a first path (2) with an electromagnetic monostable valve (6); a second path (4) with a bistable valve unit (12); and a relay valve (10); wherein the first path (2) and the second path (4) receive a main parking brake pressure (pPA) from the pneumatic parking brake unit (120), wherein, at a first stable switching position of the bistable valve unit (12), the main parking brake pressure (pPA) is controlled at the relay valve control port (10.4) of the relay valve (10) independently of the switching position of the first monostable valve (6), and at a second stable switching position of the bistable valve unit (12), the relay valve control port (10.4) vents when the first monostable valve (6) is de-energized to vent at least one spring-loaded brake cylinder (125a, 125b).

A cooling system for an aircraft fuel cell system includes a coolant pump to circulate coolant through the cooling system and a radiator to reject heat to ambient air. A cooler zone is provided downstream of the radiator, comprising a plurality of parallel cooling branches. A warmer zone is provided downstream of the cooler zone, the warmer zone including a fuel cell stack. A bypass valve is arranged to provide coolant to the warmer zone from upstream of the radiator. A restrictor may be arranged to provide coolant to the warmer zone from downstream of the radiator.

A device for heating and frothing milk which has a steam generator and a jet pump is provided. The jet pump has a steam inlet through which pressurized steam is injectable into the jet pump, a first suction inlet and a second suction inlet. The first suction inlet is configured to connect to a milk reservoir. An air inlet is connectable or connected to the second suction inlet of the jet pump for drawing air into the jet pump. A bypass valve is connected to the second suction inlet of the jet pump and has a bypass inlet. The bypass valve is switchable between a first position in which the second suction inlet of the jet pump is shut off from the steam generator, and a second position in which the second suction inlet is in fluid communication with the bypass inlet of the bypass valve for suction of steam.

Disclosed in the embodiments of the present disclosure are a method for determining a desired pressure ratio of a throttle valve, a method for determining a desired flow rate of a range extender, a method for calculating an exhaust gas recirculation (EGR) rate, and a method for determining the value of a target parameter of a range extender. A throttle valve is a throttle valve of a vehicle range extender, downstream of the throttle valve is in communication with a range extender body by means of an intake manifold, and the range extender body is in communication with an exhaust gas bypass valve. The method for determining a desired pressure ratio of a throttle valve comprises: acquiring a desired pressure of an intake manifold, a desired upstream pressure and an actual upstream pressure of a throttle valve, and a desired opening degree of an exhaust gas bypass valve; on the basis of the desired upstream pressure and the actual upstream pressure of the throttle valve, determining a pressure deviation; and on the basis of the desired pressure of the intake manifold, the desired opening degree of the exhaust gas bypass valve and the pressure deviation, determining a desired pressure ratio of the throttle valve. The method, apparatus and system for determining a desired pressure ratio of a throttle valve, and the vehicle provided in the embodiments of the present disclosure can ensure the operating efficiency of range extenders.

The invention relates to a high-pressure cleaning device comprising a high-pressure pump (3), a main line (5), a main line valve (8) arranged in the main line (5), a motor (4) for driving the high-pressure pump (3), a shut-off device (40) with which the motor (4) can be switched off, and an operating element (42). The main line (5) has a suction chamber (9) upstream of the high-pressure pump (3) and a pressure chamber (10) downstream of the high-pressure pump (3). A bypass device (30) for fluidic connection between the pressure chamber (10) and the suction chamber (9) is arranged between the pressure chamber (10) and the suction chamber (9), and includes a bypass valve (13). To regulate the pressure in the pressure chamber (10) by means of the bypass valve (13), the size of the free cross-sectional area of ​​the bypass device (30) can be adjusted by means of the operating element (42).The shut-off device (40) causes the motor (4) to be in the off state due to the pressure present in the pressure chamber (10) when the pressure in the pressure chamber (10) corresponds to at least a pressure threshold value. The bypass valve (13) adjusts the size of the free cross-sectional area, independently of any actuation of the control element (42), to a minimum such that the pressure in the pressure chamber (10) corresponds to at least the pressure threshold value when the main line valve (8) is in the closed state and the motor (4) is simultaneously in the on state.

The utility model discloses a bypass valve filter core subassembly that can adjust water mixing ratio, including filter core body, with the fixed bypass valve body of filter core body connection, filter core body can filter the calcium, magnesium ion in drinking water, get the second filtration water, and the bypass valve body can adjust the mixing ratio of drinking water and second filtration water, and filter core connecting seat is connected with the bypass valve connecting seat, and the upper end of drinking water inlet joint is fastened with the bypass valve water pipe, and the second soft water outlet channel is communicated with the bypass valve outlet channel, and the bypass valve outlet channel is communicated with the bypass valve outlet pipe again, the utility model discloses filter core body can filter the calcium, magnesium ion in drinking water, get the second filtration water, and the bypass valve body can freely adjust the mixing ratio of drinking water and second filtration water, and the water of different softness is provided for the user to select.

This invention discloses a method, apparatus, system, and vehicle for determining the desired throttle pressure ratio. The throttle is the throttle of a vehicle's range extender, and its rear end is connected to an exhaust gas bypass valve via an intake manifold. The method for determining the desired throttle pressure ratio includes: acquiring the desired pressure of the intake manifold, the desired pressure and actual pressure at the front end of the throttle, and the desired opening degree of the exhaust gas bypass valve; determining the pressure deviation based on the desired pressure at the front end of the throttle and the actual pressure; and determining the desired throttle pressure ratio based on the desired pressure of the intake manifold, the desired opening degree of the exhaust gas bypass valve, and the pressure deviation. The method, apparatus, system, and vehicle for determining the desired throttle pressure ratio provided by this invention can ensure the working efficiency of the range extender.

This utility model relates to the field of thermostat technology and discloses a thermostat seat assembly, including a frame assembly and an adjustment assembly disposed inside the frame assembly, as well as a first closing assembly disposed at the bottom of the adjustment assembly and a second closing assembly disposed inside the adjustment assembly. The adjustment assembly includes an adjustment cylinder, and the adjustment cylinder is provided with a first adjustment chamber, a second adjustment chamber and a third adjustment chamber. By setting the first adjustment chamber, the second adjustment chamber and the third adjustment chamber, when the adjustment cylinder is in contact with the coolant, the filling material in the first adjustment chamber, the second adjustment chamber and the third adjustment chamber will be heated and expanded sequentially under different temperatures, and under the action of the first lifting head, the second lifting head and the third lifting head, the opening and closing size of the main valve will be adjusted sequentially, and the opening and closing size of the main valve and the bypass valve will be kept stable within a certain temperature range, thereby achieving a step-by-step incremental adjustment effect on the opening and closing size.

The utility model discloses a closed condensate water recovery device which comprises a condensate water tank, the lower portion of the condensate water tank is installed on a base through supporting legs, a water inlet pipe is arranged on one side of the condensate water tank, a dirt removal area is arranged on the lower portion of the condensate water tank, a dirt removal filter screen is arranged in the dirt removal area, and a blow-down valve is arranged on the lower portion of the dirt removal area. A flash steam outlet pipe is arranged at the upper part of the condensed water tank; a pressure regulating pipe is arranged in the condensate water tank, one end of the pressure regulating pipe extends into the condensate water tank and is arranged in a U shape, and condensate water is injected into the pressure regulating pipe during condensate water recovery operation; a water pump is arranged on the base, an inlet of the water pump is connected with the lower portion of the condensate water tank, a bypass pipe is connected between the inlet of the water pump and an outlet of the water pump, and a bypass valve is arranged on the bypass pipe. The pressure at the inlet of the water pump is increased, and the risk of cavitation of the water pump is reduced.

The application discloses an oil filter for automobile gearbox, and relates to the technical field of filtration, which comprises a cylindrical oil filter and a cleaning mechanism. The cylindrical oil filter is hollow, is provided with a filter cartridge for filtering oil, and forms chambers indirectly connected by the filter cartridge on both sides of the filter cartridge. The flow path of the oil sequentially passes through the chambers on both sides of the filter cartridge. A bypass valve is movably arranged on the filter cartridge. According to the clogging state of the filter cartridge, the bypass valve has the ability to selectively connect the chambers on both sides of the filter cartridge. The oil inflow surface of the filter cartridge is provided with the cleaning mechanism, the cleaning mechanism is connected with the bypass valve, and the cleaning mechanism has the ability to clean the filter cartridge during movement. When the filter cartridge is not clogged, the bypass valve is in a static closed state. When the filter cartridge is clogged, the bypass valve is opened, and the cleaning mechanism cleans the filter cartridge. When the oil permeation flow of the filter cartridge is greatly reduced or directly clogged, the bypass valve is opened to drive the cleaning mechanism to scrape and clean the clogging substances on the surface of the filter cartridge.

The invention concerns a bypass passage extending along the hinge device between the ventilation passage and the area adjacent to the side of the auxiliary valve facing away from the ventilation passage. A sum is determined by the minimum dimension of the bypass passage and the minimum dimension of the ventilation passage near the auxiliary valve, where the ratio of the sum in a closed state of the auxiliary valve, when the auxiliary valve maximally closes off the ventilation passage, and the sum in a resting state of the auxiliary valve, when the auxiliary valve is at rest, is greater than approximately 0.15 and less than approximately 0.75. In the resting state, the ratio of the minimum dimension of the bypass passage and the sum is greater than approximately 0.1 and less than approximately 0.3. In the closed state, the ratio of the minimum dimension of the bypass passage and the sum is greater than approximately 0.25 and less than approximately 0.7.

The application discloses a vehicle air supply system, a control method, equipment, a medium and a product, and relates to the technical field of vehicles.The vehicle air supply system comprises an engine air supply passage and an auxiliary air supply passage, the engine air supply passage and the auxiliary air supply passage are connected through a bypass valve, and the auxiliary air supply passage is connected with a main air passage of the vehicle and a low-pressure air-consuming device respectively.The engine air supply passage is used for supplying compressed gas to the main air passage and the low-pressure air-consuming device when the engine is in a high-load state or a medium-load state.The auxiliary air supply passage is used for supplying compressed gas to the main air passage and the low-pressure air-consuming device when the engine is in a low-load state.The application can recycle high-pressure exhaust gas generated by the engine, and thus the air supply system can complete air supply operation without starting the electric air compressor multiple times, thereby significantly reducing the overall energy consumption of the vehicle air supply system.

The application provides a fuel cell control method, a control device and a fuel cell. The method comprises the following steps: after the burner is ignited, the gas flow is controlled, the first air flow is controlled by the fan, the exhaust gas of the burner passes through the heat exchanger to increase the first inlet temperature to a first target temperature; then, the first bypass valve is opened, the first inlet temperature is maintained at the first target temperature by the first bypass valve and the fan until the second outlet temperature reaches a second target temperature; the first outlet temperature and the second outlet temperature are increased to a power generation target temperature, and the primary stack and the secondary stack are controlled to generate power, wherein the second outlet temperature is the outlet temperature of the primary stack. The method solves the problem that in the prior art, the primary stack in the series connection structure has a high temperature rise speed and a high temperature drop speed, the secondary stack has a low temperature rise speed and a low temperature drop speed, the temperature difference between the two-stage stacks is too large, the thermal stress is uneven, and the service life of the battery is affected.

The application discloses an integrated treatment method for organic sludge pyrolysis and iron tailing roasting, and relates to the field of sludge treatment.The method comprises the following steps: S10, a processor is used for receiving a multi-node pipe wall space temperature gradient sequence transmitted by a plurality of temperature sensors arranged at a heat exchange interface, and receiving a pressure drop resistance time sequence transmitted by a plurality of pressure sensors arranged at an internal material conveying pipeline; S20, the processor performs a time stamp alignment operation on the multi-node pipe wall space temperature gradient sequence and the pressure drop resistance time sequence, and obtains a synchronous multi-source sensor data set; according to the application, the temperature gradient outside the pipe wall and the internal pressure drop resistance data are collected, the collected data is input into a phase change model after time stamp alignment, a virtual thermal field three-dimensional atlas of the internal blind area of the pipeline is constructed, the specific position can be accurately analyzed, and an instruction is automatically generated to adjust the opening degree of the high-temperature tail gas bypass valve in the corresponding area, so that the front feed cooling and anti-blocking control is realized.

This application discloses a safe and efficient hydrogen utilization system for chlor-alkali processes, including a main hydrogen pipeline connected to a hydrogen scrubbing tower, and a hydrogen water seal branch, a boiler hydrogen supply branch, and a hydrogen pressure regulating branch connected in parallel to its output end. The boiler hydrogen supply branch is equipped with a hydrogen cooler and a shut-off valve and flow regulating valve assembly including a bypass pipeline; the hydrogen pressure regulating branch is equipped with a hydrogen regulating valve leading to a hydrogen vent. The nitrogen replacement unit includes a main nitrogen pipeline and branch pipelines, each equipped with shut-off valves, check valves, etc., for nitrogen purging during start-up, shutdown, and emergency conditions. The system offers significant advantages: the addition of a hydrogen cooler stabilizes hydrogen temperature and flow; the addition of a bypass valve and flow meter to the flow regulating valve assembly allows for precise regulation and eliminates hydrogen venting waste; the well-designed nitrogen replacement unit and safety interlock mechanism eliminate the risk of explosion. This system effectively improves the safety and efficiency of hydrogen utilization.

The present invention provides a steam flow control device, a power plant, a steam flow control method, and a steam flow control program that enable load reduction while maintaining dry operation. [Solution] The steam flow control device 50 is a steam flow control device 50 for a power plant that includes a bypass line for bypassing steam passing through the heat recovery section of a boiler and a bypass valve for adjusting the steam flow rate, and comprises an acquisition unit 51 for acquiring the required power generation amount of the power plant, a calculation unit 52 for calculating the corresponding steam flow rate and bypass valve opening degree, which is the opening degree of the bypass valve, based on the acquired required power generation amount, and an adjustment unit 53 for adjusting the opening degree of the bypass valve so that it corresponds to the calculated steam flow rate.

The utility model relates to gas water mixing device, including gas water mixing tower, aerator, first valve, first liquid level sensor, second liquid level sensor, shower nozzle, third valve, sampling valve, bypass valve, water tank, fourth valve, water pump, fifth valve and sixth valve, the bottom end inner wall of gas water mixing tower is installed with aerator, the input of aerator is installed with first valve, the outside of gas water mixing tower is installed with first liquid level sensor, the below of first liquid level sensor is installed with second liquid level sensor, the below of gas water mixing tower is installed with water tank, and the between water tank and gas water mixing tower is installed with third valve, this utility model can adjust the water level inside the equipment according to the liquid level in the equipment, avoid the height of liquid level to exceed the bottom of the filler, and can empty the water in the equipment, avoid other to enter the inside of water storage structure, thereby optimize the equipment, make gas water can mix fully.

The application relates to the technical field of vehicle engines, and provides an air intake bypass valve and a vehicle. The air intake bypass valve comprises a sealing sleeve with a containing cavity, the containing cavity is open at one end and closed at the other end; a movable valve core is inserted into the containing cavity at one end and can slide relative to the sealing sleeve; a sealing cap is connected to the other end of the movable valve core and partially inserted into the containing cavity from the opening, and the sealing cap is provided with a balance hole communicating with the containing cavity; the movable valve core is configured to drive the sealing cap to move, so that the sealing cap opens or closes the passage of the air intake bypass valve. The air intake bypass valve provides guidance for the movement of the sealing cap, the sealing cap is inserted into the containing cavity from the opening of the sealing sleeve, the other end of the containing cavity is closed, and thus the water vapor entering the balance hole on the sealing cap enters the containing cavity of the sealing sleeve. The water vapor cannot contact the coil of the air intake bypass valve due to the blocking of the sealing sleeve, so that the air intake bypass valve can be arranged flexibly.

The present invention relates to a device having a steam generator (10), wherein the steam generator (10) has a first side (11) and a second side (12), wherein the second side (12) is designed to generate steam, wherein the device has a first bypass line (20), wherein the first bypass line (20) is arranged to bypass the first side (11) of the steam generator (10), wherein the first bypass line (20) has a first bypass valve (22), wherein the second side (12) is connected to a steam discharge line (30), wherein the steam discharge line (30) has a steam shut-off valve (32), wherein the second side (12) has a pressure measuring device (40), wherein the device has a control device (50), wherein the control device (50) is connected to the pressure measuring device (40) and the first bypass valve (22), wherein the control device is designed to control the first bypass valve (22) depending on the pressure recorded by the pressure measuring device (40).

An electric chemical injection (eCI) system may comprise a first injection line, a first on-off valve, and a screen. The screen may comprise a bypass, the screen being positioned between the first injection line and the first on-off valve. A first T-connector may be positioned between the first injection line and the screen. A choke may be configured to allow a given amount of fluid to flow, and the choke may comprise an indexer. A calibration pressure device may be included. A check valve may be provided, and the check valve may comprise a check valve ball and a spring. The check valve may be configured to allow fluid flow from a surface to a well through the first injection line while preventing reverse fluid flow.

This utility model discloses a cold-start protective magnetic adsorption molybdenum-bismuth lubricating oil filter element, including a shell, a cover plate at the upper opening of the shell, a metal cylinder in the middle of the lower surface of the cover plate, connecting holes on the surface of the metal cylinder, filter paper on the outer arc surface of the metal cylinder, and a flexible limiting bypass valve slidably connected inside the metal cylinder. The metal cylinder is a hollow plate, and magnetic rings are installed inside the metal cylinder. This cold-start protective magnetic adsorption molybdenum-bismuth lubricating oil filter element continuously adsorbs molybdenum / bismuth ions when the car is stopped, so that the molybdenum / bismuth ions are concentrated at the outer edge of the lubricating oil inside the filter element. After being discharged with the lubricating oil, the molybdenum / bismuth ions can contact the metal surface more quickly, accelerating the film formation of molybdenum / bismuth ions on the metal surface, providing protection for the car during cold starts and reducing damage to the car during cold starts.

The utility model discloses a refrigerating system for transportation solves the problem of insufficient refrigerating capacity and defrosting difficulty under freezing mode in the prior art. The refrigerating system for transportation of the utility model includes compressor, condenser, expansion valve and evaporator, still includes regenerator, gas-liquid separation type liquid distribution head and gas bypass valve, is equipped with second solenoid valve between compressor and condenser, is equipped with third solenoid valve between compressor and gas-liquid separation type liquid distribution head, is equipped with fourth solenoid valve between compressor and evaporator. The exhaust port of refrigeration compressor is connected with second solenoid valve import, third solenoid valve import, fourth solenoid valve import respectively, and the outlet of second solenoid valve is connected with the import of condenser; the outlet of third solenoid valve is connected with the import of gas-liquid separation type liquid distribution head, and the outlet of fourth solenoid valve is connected with the outlet of evaporator; the gas-liquid separation type liquid distribution head of the utility model is changed through the liquid distribution head structure, makes the refrigerant even distribution into evaporator, improves the refrigeration efficiency.

The application discloses a bypass frequency modulation control method and device based on thermoelectric decoupling, relates to the technical field of thermal power generation control, and is characterized in that: based on the flow characteristics of a low bypass valve and the work ratio of each cylinder of a unit, a first action function of the low bypass valve for controlling a steam turbine unit is acquired; based on the peak-shaving frequency change rate of the steam turbine unit and the work ratio of each cylinder of the steam turbine unit, a second action function of the low bypass valve is determined; based on the peak-shaving frequency change rate of the steam turbine unit and the work ratio of each cylinder of the steam turbine unit, a third action function of a high bypass valve for controlling the steam turbine unit is determined; the low bypass control instruction is determined according to the first action function and the second action function, the high bypass control instruction is determined based on the third action function and the low bypass control instruction; the opening of the low bypass valve is controlled according to the low bypass control instruction, and the opening of the high bypass valve is controlled according to the high bypass control instruction. The application solves the problem of the decline of the frequency modulation capability of a heating steam turbine unit under the minimum load.