36results about How to "Guaranteed emission effect" patented technology

The invention discloses a unidirectional flap. The unidirectional flap comprises a framework and an isolation membrane, wherein the framework comprises a far end, a near end and at least three vertical beams which are arranged between the near end and the far end; membrane-coating loca are arranged on the surfaces of the vertical beams; convex points are arranged on the membrane-coating loca and used for increasing friction force between the unidirectional flap and a bronchial tube; at least one isolation membrane penetrates through the membrane-coating loca to be covered on the surface of the far end; a mesh is arranged at the far end; and the near end is a closed structure which is composed of 2-3 sealed, mutually-separated and flap-shaped structures. According to the unidirectional flap, due to the adoption of the closed framework structure, support force and stability of the framework are improved; and quoin points, contacted with the inner wall of the bronchial tube, of the framework are reduced; damage rate of the inner wall of the bronchial tube caused due to machines is reduced; and occurrence probability of bronchitis is reduced.

The invention discloses a diesel particulate filter (DPF) air supplement regeneration system and method based on braking energy recovery. The DPF air supplement regeneration system comprises an engineelectronic control unit, a braking energy recovery device and a DPF air supplement regeneration device. The DPF air supplement regeneration method comprises the steps that in the deceleration fuel cutoff and braking processes, an electrically-controlled exhaust pipe butterfly valve and an electrically-controlled compressed air inflatable valve of the braking energy recovery device are controlledso that the braking energy recovery device can start the recovery process in time and stop the recovery process at the proper moment in the braking process; when the DPF regeneration condition is met,the DPF air supplement regeneration device is started, and the supplying mode and the supplying time of supplemented air are accurately judged according to gas pressure in a compressed air bottle; and according to the exhaust condition, the ejecting moment and the pulse width of a DPF regeneration diesel ejector are controlled.

The invention discloses an environment-friendly low-energy tar refined phenol-containing sodium sulfate wastewater treatment method, wherein the tar refined phenol-containing sodium sulphate wastewater is pretreated to remove oil, suspended matters and colloid, frozen to separate out sodium sulfafe decahydrate crystals in a frozen crystallizer, then centrifuged, re-dissolved, evaporated, dehydrated and dried to obtain high-purity anhydrous sodium sulfate, and the waste heat of evaporation, dehydration and drying and part of distilled water enter the concentrated nitrification tank to dissolvethe nitrates, and fully recover the resources; the upper layer phenol-containing solution separated after freezing is subjected to extraction, dephenolization, electrode oxidation and biochemical treatment, and clear solution separated by the nanofiltration membrane and a part of the distilled water produced by evaporation, dehydration and drying are sent to a biochemical treatment device for reuse. The whole treatment process of the technology has low energy consumption, zero emission and no secondary pollution.

The invention provides a method and a system for controlling a vehicle. The method comprises the following steps: monitoring a vehicle system; and when a vehicle system failure is monitored and the vehicle is needed to enter a limp state, making the vehicle enter the limp state through exhaust braking. The method and the system can make the vehicle enter the limp state through exhaust braking when detecting that the vehicle system failure can influence any one of the emission performance, the driving performance and the self safety of the vehicle system, and the driving safety of the vehicle. Compared with the prior art, the method and the system can make the vehicle enter the limp state in a more effective mode to further ensure the driving safety of the vehicle, the emission performance of the vehicle, the driving performance of the vehicle, and the self safety of the vehicle more effectively, and improve the usability of the vehicle simultaneously.

The invention discloses a system and a method for automatically judging fuel gas compositions. The system for automatically judging the fuel gas compositions comprises an engine fuel gas tank, a liquid level sensor, a fuel gas pressure regulator, a nozzle gas rail assembly, a mixer, an exhaust oxygen sensor and an electric control unit (ECU). The liquid level sensor is arranged on the engine fuelgas tank and is used for monitoring a liquid level in the engine fuel gas tank; the fuel gas pressure regulator is used for regulating the pressure of fuel gas; the nozzle gas rail assembly communicates with the other end of the fuel gas pressure regulator; the mixer is used for receiving the fuel gas injected by the nozzle and conveying the fuel gas into an engine gas cylinder; and the exhaust oxygen sensor is used for monitoring the current exhaust concentration and recording the fuel gas injection closed-loop amount. Therefore, according to the system for automatically judging the fuel gascompositions provided by the invention, the fuel gas compositions can be on-line judged automatically, and the engine fuel injection calculation, the air-fuel ratio concentration calculation and engine ignition advance angle control are regulated in real time, so that the emission performance and the economical efficiency of an engine are ensured.

The invention relates to a fuel gas low-nitrogen burner. The fuel gas low-nitrogen burner comprises a cylinder body, a fuel gas supply device, an ignition device and a swirl plate. The cylinder body is a hollow cylinder body. The rear end of the cylinder body is an air inlet. The front end of the cylinder body is an air outlet. The fuel gas supply device comprises a central fuel gas main pipe anda central fuel gas branch pipe. The central fuel gas main pipe is arranged in an inner cavity of the cylinder body and extends in the central axis direction of the cylinder body. The fuel gas low-nitrogen burner overcomes the defects that an auxiliary burning pipe (primary fuel spray gun and secondary fuel spray gun) of an existing burner is directly led out from an external fuel supply device, sothat the fluctuation of flow parameters of different burning regions can be easily large, and the effect of reducing the nitrogen oxide generation amount is influenced. The flow parameter fluctuationof different burning regions is greatly reduced through the specially designed central fuel gas branch pipe. The fuel gas low-nitrogen burner has the advantages of being simple in structure and capable of effectively reducing the nitrogen oxide generation amount.

The invention discloses a gas drainage system of a service gallery. The gas drainage system includes a ventilation opening which communicates with the service gallery, the ventilation opening can be used for placing storage devices, the storage devices are provided with valves, gas concentration collection components are arranged in the service gallery, the valves and the gas concentration collection components all communicate with a control system, the control system controls the opening and closing of the valves according to collected data of the gas concentration collection components, andthe valves of the storage devices can release gas when being opened. The gas drainage system can effectively reduce the concentration of the gas in the closed service gallery, eliminates the risk of gas explosion, avoids accidents, improves the safety of tunnel operation, ensures the safety of personnel and property, effectively saves labor costs, is scientific and efficient, and has good application prospects.

The invention discloses an aviation heavy oil engine and an aircraft. A concave guiding portion which is sunken relative to the top surface of a piston is formed in the top surface of the piston, theoutermost point of the outer side face outward in the radial direction exceeds or is flush with the fuel injection direction of a fuel injection assembly, and the extension surface exceeds the ignition position of a center spark plug inwards and in the radial direction. The top surface of the piston and the concave guiding portion which is sunken relative to the top surface of the piston and corresponding to the injection direction of the fuel injection assembly guide fuel injected-into to the ignition area of the spark plug, the top surface of the piston is optimized, so that a combustion chamber is optimized, the compression ratio is changed, the risk of knock is reduced, the tumble effect is enhanced, a relatively complete atomization mixing of heavy oil is realized, uniform burning mixture is formed after good mixing, fuel can be efficient combusted, the power, economy and emission performances of an engine which the heavy oil is applied to are ensured, and energy saving, environmental protection and low cost after the heavy oil is applied to the engine are achieved.

The invention discloses an extended-range electric vehicle energy management control method which comprises the following steps: according to the power requirement of a whole vehicle, referring to a universal characteristic curve graph of an engine, respectively selecting a working point when the engine is in light, medium and high loads, and respectively defining the selected three working pointsas a working point 1, a working point 2 and a working point 3 of a range extender, wherein the engine output powers corresponding to the three working points are P1, P2 and P3; according to the performance of the power battery, setting two battery SOC trigger points, namely SOC_high and SOC_low; setting two vehicle speed triggering points, namely Vhigh and Vlow, according to the power performanceof the whole vehicle; and S3, according to different power battery SOC values and current vehicle speed values, taking the battery SOC trigger point and the vehicle speed trigger point selected in the step S2 as references, combining the accelerator pedal state and road slope information, switching working points of an engine, and carrying out energy distribution on the whole vehicle under different loads.

The invention provides a liquid draining pump. The pump comprises a motor chamber; a motor with a driving shaft is arranged in the motor chamber, and an impeller is arranged on the driving shaft; an axial clearance is formed between a front end cover of the motor chamber and the impeller, and an annular groove is formed in the front end cover of the motor chamber; and impeller annular protrusions extending towards the annular groove are arranged on the impeller. Due to a matched structure between the impeller annular protrusions and the annular groove, when the liquid draining pump works, the impeller rotates at high speed in liquid, and hair and particulate matter or fibers and the like in the liquid are not likely to pass through a channel formed by the matched structure of the impeller annular protrusions and the annular groove under driving of rotation of the impeller, and enter the axial clearance between the front end cover of the motor chamber and the impeller to be stacked or wound on the driving shaft, and therefore normal high-speed rotating of the driving shaft is obstructed, and capacity of liquid draining of the pump is affected.

The invention discloses an environment-friendly and low-energy-consumption tar-refined phenol-containing sodium sulfate wastewater treatment method. After the tar-refined phenol-containing sodium sulfate wastewater is pretreated to remove oil, suspended matter and colloid, the sulfuric acid decahydrate is frozen and precipitated in the freezing crystallizer. Sodium crystals are then centrifuged, re-dissolved, evaporated and dehydrated to obtain high-purity anhydrous sodium sulfate. The waste heat of evaporation and dehydration and some distilled water enter the concentrated nitric acid tank for dissolving nitric acid to fully recover resources; the upper layer separated after freezing The phenol-containing solution is extracted and dephenolized, electrode oxidized and biochemically treated, and the clear liquid obtained by nanofiltration membrane separation and part of the distilled water produced by evaporation and dehydration are transported to the biochemical treatment device for reuse. The whole process of this process has low energy consumption, zero discharge and no secondary pollution.

The invention relates to the technical field of vehicles, in particular to a control method for the rapid acceleration process of a vehicle and the vehicle. The control method for the rapid acceleration process of the vehicle comprises the following steps that the opening degree of an accelerator pedal is detected in real time, and when it is detected that the opening degree of the accelerator pedal at the current moment is larger than the sum of the opening degree of the accelerator pedal at the previous moment and an increasing threshold value, the temporary accelerator opening degree is adopted, the temporary accelerator opening degree is gradually increased according to the set step length on the basis of the accelerator pedal opening degree at the previous moment, and the required fuel injection quantity is obtained on the basis of the temporary accelerator opening degree obtained after the temporary accelerator opening degree is gradually increased in each step. By means of the control method, the opening degree of an accelerator can be gradually increased, so that the fuel injection quantity is gradually increased, the problem that because the fuel injection quantity is increased too much, fuel injected into a cylinder is combusted insufficiently is solved, the emission performance of an engine is guaranteed, and meanwhile the driving comfort can be guaranteed.

The invention discloses a condensation type gas water heater and a control method thereof. The condensation type gas water heater comprises a condenser, a water storage tank communicating with the condenser, a condensate water discharge pipe communicating with the water storage tank, an atomizing nozzle arranged at the end, away from the water storage tank, of the condensate water discharge pipe and a heating assembly. The heating assembly is used for heating condensate water in the condensate water discharge pipe. According to the condensation type gas water heater and the control method thereof, the heating assembly is arranged on the condensate water discharge pipe so as to heat the condensate water to be discharged, thus, the condition that sprayed mist condensate water is cooled and condensed into water drops when the external temperature is low is avoided, and environment pollution is effectively avoided while the condensate water discharge effect is ensured.

The invention discloses a detecting device and a method of the water drenching resisting risk of a vehicle oxygen sensor under overall vehicle environment. The detecting device comprises an oxygen sensor, a thermocouple and a high-temperature resisting endoscope; a carbon powder layer is arranged on the surface of an oxygen sensor sensing element of the oxygen sensor; the oxygen sensor is mountedin an overall vehicle exhaust pipe; the thermocouple is arranged on the wall of an exhaust pipe beside the oxygen sensor; and the high-temperature resisting endoscope is arranged in a position capableof directly observing the water accumulating condition of the oxygen sensor. The detecting device can effectively estimate the water drenching resistance of the oxygen sensor under overall vehicle environment, improves the use reliability of the oxygen sensor, and can guarantee the overall vehicle dynamic property, economy and discharge performance.

The invention discloses a heavy-oil aero-engine and an aircraft. The heavy-oil aero-engine comprises a cylinder body, a cylinder head and a piston assembly, wherein a fuel injection assembly injectinga fuel into a combustion chamber is arranged on the cylinder head; and an annular guide part annularly sunken in the circumferential direction is arranged on the top surface of a piston, the outer side surface of the annular guide part corresponds to the injection direction of the fuel injection assembly, and a guide bulge is formed at the centre of the annular guide part. According to the heavy-oil aero-engine and the aircraft, the injected fuel is guided to an ignition area of a spark plug, the top surface of the piston is optimized, and then the combustion chamber is optimized, the compression ratio is changed, and the knock risk is lowered; and meanwhile, a tumbling effect is improved, adequate atomization mixing for heavy oil can be realized, uniform combustion mixed gas is formed after good mixing, and the fuel can further be organized for efficient combustion, so that the dynamic property, the economical efficiency and the emission performance of the heavy oil applied to an engine are ensured, and the energy conservation, the environment friendliness and the low cost of the heavy oil after being applied to the engine are realized.

The invention discloses a pressure stabilizing system and a pressure stabilizing method for a double-fuel gas supply device. The pressure stabilizing system and the pressure stabilizing method for the double-fuel gas supply device are characterized in that a constant-pressure mixed gas stored in a pressure stabilizing bottle (1) passes through gas outlet ports C, D and E, flow control valves (5), (6) and (7), a control valve (8) and a mixer (9) or a bypass gas channel (10) and then flows towards a gas injection module; the mixer (9) and the bypass gas channel (10) form a parallel relationship, and are both connected to the gas injection module by virtue of gas tubes; and an ECU (11) controls the working conditions of the flow control valves (5), (6) and (7), the control valve (8) and the mixer (9). The system effectively solves the problem that a layered mixed gas is supplied to an injection system due to layering of the mixed gas stored in the pressure stabilizing bottle for a long time, and ensures the performance of an engine.

The invention discloses a design method and system for an oil smoke exhaust duct. The method comprises the steps of carrying out the calculation according to a current initial size value of a flue, a preset calculation formula of the total on-way resistance loss of the uniform-section oil smoke exhaust duct, and a preset hot pressure difference, and obtaining a total resistance value of the flue through calculation, judging whether the current initial size value of the flue meets a preset condition or not according to the performance curve graph of the oil smoke exhaust hood and the total resistance value of the flue, if the initial size value of the current flue does not meet the preset condition, modifying the initial size value of the current flue based on a preset step length, and returning to the step of calculating to obtain the total resistance value of the flue according to the initial size value of the current flue, the preset total on-way resistance loss calculation formula of the uniform-section oil exhaust flue and the preset hot pressure difference until theinitial size value of the current flue meets the preset condition, and thus, theinitial size of the flue meeting the condition is obtained. According to the flue size table recommended by the method and the smoke exhaust hood arrangement principle, the emission effect can be guaranteed, and the occupied area of the shaft is reduced as much as possible.

The invention discloses an environment-friendly and low-energy-consumption treatment method for tar-refined phenol-containing sodium sulfate wastewater. A treatment device for tar-refined phenol-containing sodium sulfate wastewater is provided, including a gravity oil separation tank, an air flotation device, a coke filter, a precision filter, and freeze crystallization. device, centrifuge, nitrate dissolving device, evaporator and disc dryer, the tar-refined phenol-containing sodium sulfate wastewater is successively demulsified, gravity degreasing, air flotation degreasing, the coke filter is once filtered, and the The precision filter is filtered twice, and sodium sulfate decahydrate is frozen and precipitated in the frozen crystallizer, and then centrifuged, re-dissolved, evaporated and dehydrated to obtain high-purity anhydrous sodium sulfate, and the frozen upper layer contains phenolic solution The distilled water produced by evaporation is returned to the production for reuse. The whole process of this process has low energy consumption, zero discharge and no secondary pollution.

The invention provides a system for treating high-concentration organophosphorus wastewater and a treatment process thereof. The system comprises a treatment tank, supporting legs, a tank cover, a mixing motor, a coupling, a mechanical valve, a wastewater introduction pipe, a flow guide pipe, a distillation tower, a discharge pipe and a drain valve, and the supporting legs are in bolted connection with four corners of the bottom of the treatment tank. According to the invention, iron and carbon form countless microbattery systems in wastewater, the wastewater is electrolyzed, part of organic matters are oxidized, a large amount of ferrous iron is generated through anodic reaction, enters the wastewater and is further oxidized into ferric iron, and a flocculating agent with relatively high adsorption and flocculation activity is formed; and a large amount of nascent [H] and [O] are generated through cathode reaction, and under the slightly acidic condition, the active ingredients can be subjected to oxidation-reduction reaction with ethyl alcohol, chloroethane and ethyl methyl hypophosphite in the wastewater, so that organic macromolecules are subjected to chain scission degradation, and the pH value of the wastewater is also increased.

The invention discloses a fuel oil jetting system of a heavy oil engine and an aircraft engine. The fuel oil jetting system comprises a compressed air system and a fuel oil jetting system, wherein thecompressed air system comprises an air compressor and an air supplying pipeline; the fuel oil jetting assembly comprises a fuel oil nozzle, a premixing chamber and an oil-gel mixing nozzle; an oil jetting port of the fuel oil nozzle and a compressed air inlet which communicates with the air supplying pipeline are formed in the premixing chamber; the oil-gas mixing nozzle communicates the premixing chamber and is used for feeding atomized mixed oil which is formed through fuel oil and compressed air in the premixing chamber into a combustion chamber of the engine. According to the fuel oil jetting system of the heavy oil engine, a fuel jetting structure assisting air atomizing and premixing is mounted on a cylinder head of the engine, so that heavy oil can be fully atomized, and uniform combustion mixing gas can be obtained by mixing; and moreover, the combustion can be efficiently carried out; the dynamic property, the economic property and the emission property of the heavy oil applied to the engine can be ensured; and the energy conservation, the environmental protection and low cost are achieved after the heavy oil is applied to the engine.

The invention provides a pressure relief gate valve for serious accidents. The pressure relief gate valve for serious accidents comprises a valve body, a packing box, a valve seat, a valve rod, a valve clack, an electric device, an electric fitting connection plate, a disc spring set and a support; a sealing ring is arranged between the packing box and the valve body and arranged below a pendant collet; the sealing ring comprises an upper graphite ring body, a lower graphite ring body, an upper metal ring body and a lower metal ring body; the inner circle of the lower metal ring body is in clearance fit with the outer circle of the upper metal ring body; the lower graphite ring body is arranged on the side, close to the packing box, of the space between the upper metal ring body and the lower metal ring body; and the upper graphite ring body is arranged on the side, close to the valve body, of the space between the upper metal ring body and the lower metal ring body. The discharging capacity of the pressure relief check valve can be ensured in case of serious accidents, the valve can be opened and the valve body and the packing box can be sealed in case of sharp changes, and the sealing requirement is met.

The invention discloses a heavy oil engine piston and an aero-engine. The heavy oil engine piston is characterized in that the top surface of the piston is provided with an annular guide part which issunken along an annular shape located in the circumferential direction, the outer side face of the annular guide part corresponds to the fuel injection direction, and a guide protrusion is formed inthe center of the annular guide part. According to the heavy oil engine piston and the aero-engine, the injected fuel is guided to an ignition region of a spark plug, so that the top surface of the piston is optimized, then a combustion chamber is optimized, the compression ratio is changed, the knocking risk is reduced, meanwhile the tumbling motion effect is enhanced, the heavy oil can be fullyatomized and mixed, and uniform combustion mixture gas is formed after good mixing; and furthermore, high-efficiency combustion of the fuel can be achieved, the dynamic performance, the economical efficiency and the emission performance of the heavy oil in application to the engine can be guaranteed, and the effects of being energy-saving, environment-friendly and low in cost of the heavy oil after being applied to the engine are achieved.

The invention discloses oxygen inhalation and exhaust equipment for ward nursing, which comprises an oxygen inhalation and exhaust sickbed, a bed back plate is fixedly mounted on the oxygen inhalation and exhaust sickbed, a lifting guide rail is fixedly mounted on the bed back plate, a lifting seat is slidably mounted on the lifting guide rail, and a lifting cylinder is fixedly connected to the lifting seat; the lifting seat is fixedly connected with an isolation cover, a sealing ring is fixedly installed on the isolation cover, a saddle-shaped pillow is fixedly installed on the oxygen inhalation and exhaustion sickbed, a neck groove is formed in the saddle-shaped pillow, a guide seat is fixedly installed on the isolation cover, and an oxygen exhaustion structure with a two-section type telescopic function is installed on the guide seat. A hanging block is fixedly mounted on the oxygen discharging structure, and an oxygen supply structure with a movable function is mounted on the isolation cover; the oxygen inhalation and exhaustion sickbed serves as a main body of the oxygen inhalation and exhaustion equipment, compared with traditional oxygen inhalation and exhaustion equipment, the oxygen inhalation and exhaustion sickbed has the nursing function, and a patient can directly and comfortably lie on the oxygen inhalation and exhaustion sickbed.

The invention discloses a piston of a heavy oil engine and an aero-engine. A concave guide part sunken relative to the top surface of the piston is formed on the top surface of the piston; the outwardoutermost point of the outer side face in the radial direction exceeds or is flush with a fuel injection direction of a fuel injection assembly; an export face exceeds the ignition position of a central sparking plug inward in the radial direction; and an upward protruding strip-type bump is formed between the outer side face and the export face in the bottom. An injected fuel is guided to an ignition region of the sparking plug by means of the concave guide part which corresponds to the fuel injection direction, is located on the top surface of the piston and is sunken relative to the top surface of the piston, so that the top surface of the piston is optimized, and therefore, a combustion room is optimized, the compression ratio is changed, and the detonating risk is reduced; and meanwhile, a tumbling effect is enhanced, so that heavy oil can be atomized and mixed fully to form uniform combustion mixed gas after being mixed well. Fuels can be organized to combust efficiently, too, so that the dynamic property, the economical efficiency and the emission performance of the heavy oil applied to the engine are guaranteed, and energy conservation, environment-friendliness and low cost of the heavy oil applied to the engine are achieved.

The invention discloses an automobile exhaust funnel capable of improving the tail gas purification efficiency and the exhaust effect. The automobile exhaust funnel capable of improving the tail gas purification efficiency and the exhaust effect comprises an exhaust connecting ring, a reciprocating telescopic rod is fixedly connected to the inner wall of the exhaust connecting ring, a connecting fixing block is fixedly connected to the tail end of the reciprocating telescopic rod, a functional annular plate is fixedly connected to the end face of the right side of the exhaust connecting ring,a connecting net plate is fixedly connected into the functional ring plate, and a purifying telescopic net is fixedly connected to the end face of the right side of the connecting net plate. Accordingto the automobile exhaust funnel capable of improving the tail gas purification efficiency and the exhaust effect, the equipment is provided with a telescopic pipe wall, in the telescopic process ofa pipe wall, crossed cleaning of the inner wall of a pipeline can be achieved, then the removal of corrosives attached to the inner wall is completed, the tail gas exhaust rate is increased, and the service life is prolonged; meanwhile, the beneficial effect of improving the tail gas purification effect can be achieved through stretching, the diameter and length of a telescopic purification devicein the exhaust funnel are changed, and then the contact area of tail gas and purification particles is increased.

The invention provides an intelligent production device for a high-strength flame-retardant cable PVC sheath material. The intelligent production device for the high-strength flame-retardant cable PVCsheath material comprises a feeding pipe, a high-speed mixer, a flow guide pipe, a double-screw extruder, a connecting pipe, a screw granulator, a granulator discharging pipe, a granule discharging pipe, a line bank, supporting legs and a cable. The feeding pipe is connected to the upper inlet position of the high-speed mixer in a threaded mode; One longitudinal end of the flow guide pipe is in threaded connection with the lower outlet position of the high-speed mixer, and the other end of the flow guide pip is in threaded connection with the upper inlet position of the double-screw extruder.Through arrangement of a feeding hopper, a cleaning cover, an impurity filtering net, a U-shaped lining base, a movable material plate and a buffer tension spring, impurities in raw materials can befiltered easily, the production efficiency is guaranteed, raw materials are placed in the feeding hopper, and are continuously guided to flow through the movable material plate; the movable material plate acts in the U-shaped lining base through energy storage and energy release of the buffer tension spring, then the raw materials can continuously fall, impurities are filtered out through the impurity filtering net, the impurities can be discharged and cleaned through the cleaning cover, and operation is convenient.

The invention discloses a condensing gas water heater and a control method thereof. The condensing gas water heater includes a condenser, a water storage tank connected to the condenser, a condensed water drain pipe connected to the water storage tank, and a The condensed water drain pipe is away from the atomizing nozzle at one end of the water storage tank, and a heating assembly used for heating the condensed water in the condensed water drain pipe. In the condensing gas water heater and its control method of the present invention, a heating assembly is arranged on the condensed water drain pipe to heat the condensed water to be discharged, thereby preventing the sprayed mist condensed water from being condensed when the external temperature is low. The situation of water droplets occurs, while ensuring the effect of condensate discharge, it can effectively avoid pollution to the environment.

The invention discloses a unidirectional flap. The unidirectional flap comprises a framework and an isolation membrane, wherein the framework comprises a far end, a near end and at least three vertical beams which are arranged between the near end and the far end; membrane-coating loca are arranged on the surfaces of the vertical beams; convex points are arranged on the membrane-coating loca and used for increasing friction force between the unidirectional flap and a bronchial tube; at least one isolation membrane penetrates through the membrane-coating loca to be covered on the surface of the far end; a mesh is arranged at the far end; and the near end is a closed structure which is composed of 2-3 sealed, mutually-separated and flap-shaped structures. According to the unidirectional flap, due to the adoption of the closed framework structure, support force and stability of the framework are improved; and quoin points, contacted with the inner wall of the bronchial tube, of the framework are reduced; damage rate of the inner wall of the bronchial tube caused due to machines is reduced; and occurrence probability of bronchitis is reduced.

The invention discloses an energy management control method for an extended-range electric vehicle, which comprises the following steps: according to the power demand of the whole vehicle and referring to the universal characteristic curve of the engine, selecting a working point when the engine is under light, medium and high load. , and define the selected three operating points as operating point 1, operating point 2, and operating point 3 of the range extender respectively. The engine output power corresponding to the three operating points is P1, P2, and P3; according to the performance of the power battery , set two battery SOC trigger points, namely SOC_high and SOC_low; according to the vehicle dynamic performance, set two vehicle speed trigger points, namely V_high and V_low; according to different power battery SOC values ​​and current vehicle speed values, and so The battery SOC trigger point and the vehicle speed trigger point selected in step S2 are used as a reference, and combined with the accelerator pedal state and road gradient information, the operating point of the engine is switched, and the energy is distributed to the vehicle under different loads.

The invention discloses a pressure stabilizing system and a pressure stabilizing method for a double-fuel gas supply device. The pressure stabilizing system and the pressure stabilizing method for the double-fuel gas supply device are characterized in that a constant-pressure mixed gas stored in a pressure stabilizing bottle (1) passes through gas outlet ports C, D and E, flow control valves (5), (6) and (7), a control valve (8) and a mixer (9) or a bypass gas channel (10) and then flows towards a gas injection module; the mixer (9) and the bypass gas channel (10) form a parallel relationship, and are both connected to the gas injection module by virtue of gas tubes; and an ECU (11) controls the working conditions of the flow control valves (5), (6) and (7), the control valve (8) and the mixer (9). The system effectively solves the problem that a layered mixed gas is supplied to an injection system due to layering of the mixed gas stored in the pressure stabilizing bottle for a long time, and ensures the performance of an engine.