30results about How to "Normal supply" patented technology

The present invention relates to an automatic welding device for vehicle frame side beam comprising two adjusting bases equipped face to face for placing frame side beam, at least two support saddles equipped between the two adjusting bases, a hydraulic clamp equipped on the support saddle and a welding car supported by two sides of the frame side beam; the upper ends faces of the two adjusting bases are relatively tilted; the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base. The upper ends faces of the two adjusting bases are relatively tilted and the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base, i.e. the two adjusting bases and every support saddle form a curved surface; welding is implemented on the curved surface, i.e. a camber is preset before welding; when the frame side beam is taken down after welding, the frame side beam begins to deflect and deform inversely, i.e. the preset camber is balanced out by the deflection and deformation to control the frame side beam camber in the permitted range which ensures the production quality; in addition, the welding car is adopted for the implementation of the automatic welding; in this way, the welding labor intensity is small.

A hot water supply system comprises a hot water source which can continuously output the heated water flow; a water return pipeline, of which the front end communicates with a water outlet of the hot water source, the tail end communicates with a water inlet of the hot water source, and a group or more groups of water outlet valves are arranged thereon; a main control unit, which is provided with a temperature control part to monitor the temperature of the water flow in the water return pipeline and maintain the temperature at the state that is in line with the set water temperature by a user and a preset timing part; a pump which is arranged in the water return pipeline and is manipulated by the temperature control part of the main control unit to operate; a first temperature detector which can detect the temperature of the water flow at the tail end part of the water return pipeline; a second temperature detector which can detect the temperature of the hot water at the water outlet of the hot water source; and a plurality of groups of control units of using terminals which are provided with a control panel and a water temperature display device.

The invention provides low-viscosity grinding cutting fluid. The low-viscosity grinding cutting fluid comprises the following components in percentage by mass: 50% to 80% of polyhydric alcohols with 60 to 200 molecules, 18% to 46% of deionized water, 0.5 % to 3% of thickening agent, and 0.3% to 3% of lubricating agent. The low-viscosity grinding cutting fluid can enable the grinding micro powder to be dispersed uniformly, the viscosity of mortar prepared by adopting the low-viscosity grinding cutting fluid is low, and the low-viscosity grinding cutting fluid is used for cutting inorganic nonmetallic materials. The grinding cutting fluid provided by the invention has the characteristics that the cost is low, and the grinding cutting fluid can be cleaned by water easily, meanwhile, the difficulty that abrasive particles subsides fast when the low-viscosity cutting fluid is used by a multi-wire cutting machine is overcome, the suspension stability of abrasive materials in the cutting fluid is achieved effectively, and the cutting fluid is applied to precision cutting to optical substrates, quartz material, ceramic substrates and the like by a small-sized multi-wire cutting machine.

The invention relates to a nitrogen making system for a ship. The nitrogen making system comprises a compressor, a nitrogen making machine and / or a nitrogen buffer tank as well as a flow pressure regulating device which are sequentially connected through pipelines, wherein the compressor comprises at least one compression unit and is used for providing compressed air; the nitrogen making machine comprises at least two nitrogen making units and is used for making nitrogen; the nitrogen buffer tank is used for storing and buffering the nitrogen; the flow pressure regulating device is used for regulating flow and pressure. Compared with a conventional nitrogen making system, the nitrogen making system is not equipped with an air dryer, an air buffer tank or a nitrogen buffer tank and can output the small-flow and high-pressure nitrogen, and the pressure of the nitrogen is higher than the highest output pressure of an air compressor. With the adoption of the means, the structure of the nitrogen making system in the prior art is simplified, device operation and nitrogen yield cannot be influenced, and device investment and energy are saved.

The invention discloses a full-automatic mobile phase bubble separation device, which comprises a tubular capturing trap, wherein a mobile phase liquid dripping passage is formed in an upper cover at the upper end of the tubular capturing trap; a guide device is arranged at the lower end of the upper cover, and a clearance is formed between the guide device and the periphery of the tubular capturing trap; the lower end opening of the mobile phase liquid dripping passage is positioned on the outer wall of the guide device; the mobile phase liquid dripping passage is connected with an upper perfusion pipe, and the lower end of the tubular capturing trap is provided with a mobile phase liquid drop outlet and connected with a lower perfusion pipe; and upper and lower liquid level sensors are arranged on the side walls of the tubular capturing trap respectively, the side wall of the tubular capturing trap is provided with an air outlet and connected with an air extraction pressure-keeping pump through a pipeline, and the upper and lower liquid level sensors are electrically connected with the air extraction pressure-keeping pump through a control loop. The device realizes separation of visible bubbles and liquid in the falling process of the mobile phase liquid drops, enables the mobile phase liquid drops to slowly flow down along the inner wall of the tubular capturing trap, and can effectively prevent the mobile phase liquid drops from directly dripping into the liquid level at the lower end of the tubular capturing trap.

The invention provides a self-operated control type low-pressure normally-open structure for pressure reduction, and belongs to the technical field of adjusting and controlling devices. The self-operated control type low-pressure normally-open structure for pressure reduction comprises a filter, a pressure reducing valve and a low-pressure normal open valve. According to the self-operated controltype low-pressure normally-open structure for pressure reduction, the filter is arranged, so that blockage of the pressure reducing valve and the low-pressure normal open valve is prevented, meanwhile, impurities can be filtered, and the fluid with higher cleanliness is provided; the pressure reducing valve and the low-pressure normally-open valve can be arranged in parallel, so that when upstreampressure is large, the pressure reducing valve can be opened, the low-pressure normal open valve can be closed, and the pressure reduction and supply of the fluid are realized; when the pressure reducing valve cannot be opened under the condition that the upstream pressure is small, the low-pressure normal open valve is opened, the supply of the fluid can also be realized; and the adaptability ishigher, so that normal proceeding of people in production and life is guaranteed, the influence on the production and life of people is avoided, and supportability of the self-operated structure is higher.

The invention discloses a centrifugal water chilling unit and a power failure rapid starting method. The centrifugal water chilling unit is characterized in that a compressor rapid unloading device comprises a four-way valve and rapid unloading valves; specifically, one rapid unloading valve is arranged outside the four-way valve to communicate with a high-pressure oil outlet of the four-way valve and a high-pressure oil cavity of a piston cavity, and a runner where the rapid unloading valve is located and an inflow runner in the four-way valve simultaneously constitute a high-pressure oil inlet channel; the other rapid unloading valve is arranged outside the four-way valve to communicate with a low-pressure oil cavity of the piston cavity and an oil tank, and the low-pressure cavity in the piston cavity simultaneously communicates with the oil tank through the other rapid unloading valve and a backflow runner in the four-way valve; and an adjustable guide vane is arranged at an inlet of a compressor and controlled to be opened and closed through the four-way valve. Rapid starting can be achieved under the condition that a main power source is abnormally disconnected and is recovered for a short time.

The invention discloses a hydraulic jack. An oil suction header pipe, a high pressure passage and an oil release passage are pre-arranged on a base; a one-way valve is arranged at the outlet of the high pressure passage; a piston cylinder is fixedly arranged on the base; the central part of the piston cylinder is aligned with the one-way valve; the middle of an oil tank is provided with a three-way valve; a switching handle of the three-way valve is positioned outside the oil tank; an oil suction pipe A and an oil suction pipe B are connected with the three-way valve; ports of the oil suction pipe A and the oil suction pipe B are positioned on the bottom and the top of the oil tank; two ends of the oil suction header pipe are communicated with a manual hydraulic pump and one passage of the three-way valve; a piston is arranged in a cylinder of the piston cylinder; an adjusting screw is arranged in the middle of the piston; and the oil release valve is arranged in the middle of the oil release passage on the base.

The invention provides a signal injection topology identification device and method based on an N line. The device comprises a power supply module, an MCU main control module, and a zero-crossing detection module, an HPLC module, a signal receiving module, a signal injection module and a 485 module which are connected with the MCU main control module, according to the scheme, a branch box can be conveniently and rapidly accessed, topology identification of the branch box and an electric energy meter under a transformer area is realized, troubleshooting and locking of fault points are facilitated, electric energy supply of the fault points is cut off at the first time, faults are timely maintained, normal and efficient supply of electric power is ensured, and rapid development of ubiquitouselectric power Internet of Things can be effectively promoted.

The invention discloses a centrifugal chiller and a method for quick start-up after power failure, which is characterized in that the quick unloading device of the compressor includes a four-way valve and a quick unloading valve, specifically: a quick unloading valve is arranged outside the four-way valve to communicate with the four-way valve The high-pressure oil outlet of the valve and the high-pressure oil chamber of the piston cavity, the flow channel where the quick unloading valve is located and the internal flow channel of the four-way valve simultaneously form a high-pressure oil inlet channel; another quick unloading valve is set outside the four-way valve to communicate with the piston cavity The low-pressure oil chamber and the oil tank, the low-pressure chamber in the piston chamber are connected to the oil tank through the other quick unloading valve and the internal return channel of the four-way valve; an adjustable guide vane is arranged at the inlet of the compressor, and the adjustable guide vane is controlled by the four-way valve. The valve controls opening and closing. Quick startup can be achieved in the event of an abnormal disconnection of the main power supply and a short recovery.

The invention relates to a desktop computer water-cooling heat source comprehensive recycling system for a machine room and a working method thereof. The desktop computer water-cooling heat source comprehensive recycling system for the machine room comprises a cold water pipe, a hot water pipe, a steam pipe, a CPU cooler, a display card cooler, a mixer, an auxiliary heating cabinet, a cooling tower and an electric control cabinet. Wherein the hot water pipe and the steam pipe are communicated with the mixer, the mixer is respectively connected with the auxiliary heating cabinet and the coolingtower through pipelines, and the auxiliary heating cabinet and the cooling tower are connected with the cold water pipe through pipelines. The system is reasonable in design and convenient to use, heat generated by a computer CPU and a display card can be concentrated and reused, the energy utilization rate is increased, and energy consumption is reduced.

The invention discloses a plant functional drink with a heart and cerebral vessel protection function and a preparation method of the plant functional drink. The plant functional drink is prepared from raw materials in parts by weight as follows: 10-30 parts of dried ginger slices, 10-30 parts of dried garlic slices, 5-15 parts of dried lemon slices, 2-6 parts of dried radix glycyrrhizae slices, 2-6 parts of dried hawthorn fruit slices, 1-3 parts of barley tea, 1-3 parts of dried natto, 400-800 parts of water and 100-300 parts of apple cider vinegar. Solid raw materials are dried at 90-100 DEGC for 10-20 min, the dried raw materials are mixed in proportion and crushed to form powder of 30-80 mesh, the powder is uniformly mixed with water, the obtained mixture is heated to be boiled and kept boiling for 10-30 min, cooling is conducted, an extract solution obtained after separation is mixed with the apple cider vinegar in the weight ratio of (2-4): 1, sub-packaging and sterilization areperformed, and the functional drink product is obtained. The functional drink can also be prepared by directly heating the mixed powder with the water diluted apple cider vinegar for extraction. Thecost of the raw materials is low, the processing process is simple, and the plant functional drink has good effects on prevention and adjuvant therapy of cardiovascular and cerebrovascular diseases.

The invention relates to a comprehensive recovery and utilization system of water-cooling and heat sources for desktop computers used in computer rooms and a working method thereof. equipment, auxiliary heating cabinets, cooling towers and electrical control cabinets. The hot water pipe and the steam pipe are connected through the mixer, the mixer is respectively connected with the auxiliary heat cabinet and the cooling tower through the pipeline, and the auxiliary heat cabinet and the cooling tower are connected with the cold water pipe through the pipeline. The invention has reasonable design and convenient use, can concentrate and reuse the heat generated by computer CPU and graphics card, improve energy utilization rate and save energy consumption.

The invention belongs to the technical field of oil fluid lubricating equipment, and particularly relates to a multipoint automatic grease lubricating micro-control system for an automotive chassis. The multipoint automatic grease lubricating micro-control system comprises a lubricating oil cylinder and a mounting base used for fixing and mounting the lubricating oil cylinder. The mounting base comprises a threaded sleeve tube placed at the upper end of the mounting base, and the lubricating oil cylinder is connected with the threaded sleeve tube. A groove is formed in the bottom face of the mounting base, and an oil guide inserting pin and an air inlet inserting pin are arranged in the groove. The oil guide inserting pin and the air inlet inserting pin are fixedly connected, and openingscorresponding to the upper ends of the oil guide inserting pin and the air inlet inserting pin are formed in the top face of the groove. The oil guide inserting pin is connected with the input end ofan lubricating oil pump fixedly mounted on the lower side of the mounting base, the air inlet inserting pin is connected with an air inlet cap arranged on the outer side of the groove, and the oil guide inserting pin is further connected with a rotating rotary knob through a transmission mechanism. The output end of the lubricating oil pump is connected with an oil supply pipeline. The multipointautomatic grease lubricating micro-control system can reduce the occupied space of equipment, cleaning and maintenance of the equipment are facilitated, and meanwhile oil leakage accidents occurring when the lubricating oil cylinder is replaced can be avoided.

The invention provides a low-temperature attitude control engine propellant supply pipeline system, including a low-temperature fuel annular pipeline, a low-temperature oxidant annular pipeline, a low-temperature heat insulation bracket, a low-temperature attitude control engine, a control valve group, and a throttle orifice group; the low-temperature fuel annular pipeline and the low-temperature oxidant annular pipeline are fixed to the general assembly structure of the propulsion system through a low-temperature heat-insulating bracket, and the top of the low-temperature attitude control engine is connected to the low-temperature fuel annular pipeline through a low-temperature fuel control valve. The oxidant control valve is connected with the low-temperature oxidant annular pipeline, and the ends of the low-temperature fuel annular pipeline and the low-temperature oxidant annular pipeline are equipped with bifurcated branches. Control valves are set on the bifurcated branches, and different apertures are connected in series behind the control valves. throttle orifice. The supply pipeline system of the present invention can solve the problems of large heat leakage of low-temperature propellant during pipeline transportation, control of low-temperature attitude control engine inlet conditions, and adjustment of propellant pre-cooling consumption under multiple working conditions.

The invention provides a signal injection topology identification device and method based on an N line. The device comprises a power supply module, an MCU main control module, and a zero-crossing detection module, an HPLC module, a signal receiving module, a signal injection module and a 485 module which are connected with the MCU main control module, according to the scheme, a branch box can be conveniently and rapidly accessed, topology identification of the branch box and an electric energy meter under a transformer area is realized, troubleshooting and locking of fault points are facilitated, electric energy supply of the fault points is cut off at the first time, faults are timely maintained, normal and efficient supply of electric power is ensured, and rapid development of ubiquitouselectric power Internet of Things can be effectively promoted.

The invention relates to a method and a device for improving the oil-supplying reliability of a lubricating-oil system of a power generating set. The method is characterized in that in a control logic of a DCS (Distributed Control System) of the lubricating-oil system of the power generating set, when the low voltage of a safety section is related to tripping, additionally setting time delay of 2-5 seconds for an alternating-current lubricating-oil pump, so as to avoid the voltage-loss time of the alternating-current lubricating-oil pump for 1-2 seconds when a power switch of the safety section is switched, and ensuring no tripping of the alternating-current lubricating-oil pump when the power switch of the safety section is switched; setting a low-voltage instantaneous linked starting condition of the safety section in the hard-wiring condition of related starting of a direct-current lubricating-oil pump, setting a low-voltage instantaneous starting condition into failure of the alternating-current lubricating-oil pump in the linking logic of the direct-current lubricating-oil pump, and ensuring that oil pressure is provided by the direct-current lubricating-oil pump when in short-time voltage loss of a power switching bus of the safety section. The method and the device have the advantages that the oil-supplying reliability of the lubricating-oil system of the power generating set is improved from two aspects, the reliability is high and normal oil supplying of the lubricating-oil system at the low voltage of the safety section and under the condition that the alternating-current lubricating-oil pump fails is ensured.

The invention provides an automatic feeding device for a pressure-sensitive adhesive tape production line, which is characterized in that a protective strip box of a feeding frame is arranged on the ground, a connecting frame is arranged on one side, and a support frame is arranged above the protective strip box; a feeding traction drive and a feeding wheel are mounted on the plate face of a feeding mounting plate of a feeding traction device of a traction detection device of the torsion detection feeding device, a detection mounting plate of a detection guide device is mounted on the feeding mounting plate of the feeding traction device, and the traction detection device is mounted on a supporting frame of a feeding frame through the feeding mounting plate. A torsion frame of the reverse torsion device is arranged on the ground, and a torsion disc is arranged above the torsion frame; a swinging and shaking mounting plate of a swinging and shaking driving mechanism of the swinging and shaking discharging mechanism is fixed to a supporting frame, a swinging and shaking drive and a swinging and shaking wheel are installed on the swinging and shaking mounting plate, a feeding wheel is installed on the other Z-shaped side arm, and a strip guide sleeve is arranged at one end of a strip guide groove and installed on a supporting frame of a feeding frame through a strip guide convex lug. The automatic feeding device is free of torsion phenomenon, smooth in feeding, wide in application range and free of labor force occupation.

The invention discloses a full-automatic mobile phase bubble separation device, which comprises a tubular capturing trap, wherein a mobile phase liquid dripping passage is formed in an upper cover at the upper end of the tubular capturing trap; a guide device is arranged at the lower end of the upper cover, and a clearance is formed between the guide device and the periphery of the tubular capturing trap; the lower end opening of the mobile phase liquid dripping passage is positioned on the outer wall of the guide device; the mobile phase liquid dripping passage is connected with an upper perfusion pipe, and the lower end of the tubular capturing trap is provided with a mobile phase liquid drop outlet and connected with a lower perfusion pipe; and upper and lower liquid level sensors are arranged on the side walls of the tubular capturing trap respectively, the side wall of the tubular capturing trap is provided with an air outlet and connected with an air extraction pressure-keeping pump through a pipeline, and the upper and lower liquid level sensors are electrically connected with the air extraction pressure-keeping pump through a control loop. The device realizes separation ofvisible bubbles and liquid in the falling process of the mobile phase liquid drops, enables the mobile phase liquid drops to slowly flow down along the inner wall of the tubular capturing trap, and can effectively prevent the mobile phase liquid drops from directly dripping into the liquid level at the lower end of the tubular capturing trap.

The utility model relates to a novel jack structure, a main oil suction pipe, a high-pressure channel and an oil drainage channel are pre-arranged on a base; a one-way valve is arranged at the outlet end of the high-pressure channel; a piston cylinder is installed and fixed on the upper surface of the base; a three-way valve is arranged at the middle part of an oil tank, and a conversion handle of the three-way valve is positioned outside the oil tank; an oil suction pipe A and an oil suction pipe B are respectively connected with the three-way valve; the two ends of the main oil suction pipe are respectively communicated with a manual hydraulic pump and one of channels of the three-way valve; a piston is installed in the piston cylinder; an adjusting screw rod is installed on the piston; and an oil discharge valve is installed at the position in the middle of the oil drainage channel on the base.

The invention discloses a gear box sealing structure of a reconnaissance robot, and relates to the technical field of gear boxes. The problem that lubricating oil supply of a gear box is inconvenient in a hard environment is solved. The structure specifically comprises an upper box body and a lower box body, and the inner wall of one side of the upper box body is fixedly connected with upper fixing blocks which are evenly distributed through screws; the outer walls of one sides of the upper fixing blocks are fixedly connected with electromagnetic round blocks through screws; the inner wall of one side of the lower box body is fixedly connected with lower fixing blocks which are uniformly distributed through screws; electromagnetic holes are formed in the inner walls of one sides of the lower fixing blocks; a connecting hole is formed in the inner wall of one side of the lower box body; and through holes are machined in the inner walls of the two sides of the upper box body. Gear connecting shafts are rotationally connected to the inner walls of one sides of the connecting hole and the through holes; the peripheral outer walls of the gear connecting shafts are fixedly connected with gear sets; and the outer wall of the top end of the upper box body is fixedly connected with a lubricating oil storage box through screws. By arranging a molybdenum disulfide storage box, it is guaranteed that lubricating oil is supplied to a gear box normally when the reconnaissance robot is in a severe environment.

The invention discloses an oil circulation device and a method of a pressure change device. The pressure change device is installed on a gearbox, a hydraulic steering device and a brake device respectively and borrows lubricating oil from each device for lubrication, the oil supply manner can be simplified, normal oil supply can be guaranteed, and maintenance-free of the pressure change device isrealized. The invention provides four installation methods of installing the pressure changing device, and the installation methods can be applied to various applications.

The invention discloses a medical institution drug supply chain service platform, relates to the technical field of a service platform and solves the problem that the medicine getting amount is likelyto exceed the actual inventory. The service platform is characterized by comprising a warehousing system and a medicine getting system. The warehousing system comprises an available inventory moduleand an actual inventory module, wherein the available inventory module is in communication connection with the actual inventory module. The medicine getting system comprises an operation medicine getting module, a department medicine getting module, a doctor prescription module, a hospitalization medicine getting module and a warehouse-out list module, wherein the operation medicine getting module, the department medicine getting module, the doctor prescription module and the hospitalization medicine getting module are all in communication connection with the warehouse-out list module, and thewarehouse-out list module is in communication connection with the available inventory module. The same medicine can be prevented from being obtained for multiple times, the problem that the medicinegetting amount exceeds the actual inventory and cannot be obtained is solved, and therefore, the effect that the medicine getting amount does not exceed the actual inventory is achieved, and the effects of ensuring normal supply of the medicine and conveniently storing the medicine in advance can also be achieved.

The present invention relates to an automatic welding device for vehicle frame side beam comprising two adjusting bases equipped face to face for placing frame side beam, at least two support saddles equipped between the two adjusting bases, a hydraulic clamp equipped on the support saddle and a welding car supported by two sides of the frame side beam; the upper ends faces of the two adjusting bases are relatively tilted; the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base. The upper ends faces of the two adjusting bases are relatively tilted and the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base, i.e. the two adjusting bases and every support saddle form a curved surface; welding is implemented on the curved surface, i.e. a camber is preset before welding; when the frame side beam is taken down after welding, the frame side beam begins to deflect and deform inversely, i.e. the preset camber is balanced out by the deflection and deformation to control the frame side beam camber in the permitted range which ensures the production quality; in addition, the welding car is adopted for the implementation of the automatic welding; in this way, the welding labor intensity is small.

The invention relates to a fault redundancy energy storage power station multi-branch control system and evaluation method, and the system comprises a data input module, a data storage module, a storage control module, a monitoring feedback module, a CPU control module, a first data calling module, an external hardware starting module, a redundancy CPU switching module, a standby CPU control module, and a second data calling module. After the CPU control module reads corresponding data information, a control instruction is sent out by the instruction output module, the CPU control module and the redundant CPU control module are respectively provided with a monitoring feedback module, and the monitoring feedback modules are used for monitoring the running state of the CPU. The energy storage power station is provided with two sets of control modules, when the CPU module participating in control fails, the energy storage power station can be controlled in time, the shutdown time of the power station due to the failure of the control modules is greatly shortened, the loss of the energy storage power station is reduced to the maximum extent, the electric energy of the energy storage power station can be normally supplied, and the power supply efficiency is improved. And normal operation of life of people and industrial production is guaranteed.

Provided is a nitrogen generating system for ships. The nitrogen generating system consists of the following apparatuses sequentially connected by means of pipelines: a compressor (10), comprising at least one compressing unit (101) used for providing compressed air; a filtering means (70), comprising at least one filtering unit used for filtering the compressed air; a nitrogen generator (20), comprising at least two nitrogen generating units (201) used for generating nitrogen; an optional nitrogen buffer (40); and a flow and pressure regulating means (30) used for regulating flow and pressure. The system does not have a refrigeration dryer and an air buffer tank, and therefore, the system is simple in structure and the investment and energy consumption of apparatuses are reduced; meanwhile, the system can output nitrogen having low flow and high pressure.

The invention provides a self-operated control type low-pressure normally-open structure for pressure reduction, and belongs to the technical field of adjusting and controlling devices. The self-operated control type low-pressure normally-open structure for pressure reduction comprises a filter, a pressure reducing valve and a low-pressure normal open valve. According to the self-operated controltype low-pressure normally-open structure for pressure reduction, the filter is arranged, so that blockage of the pressure reducing valve and the low-pressure normal open valve is prevented, meanwhile, impurities can be filtered, and the fluid with higher cleanliness is provided; the pressure reducing valve and the low-pressure normally-open valve can be arranged in parallel, so that when upstreampressure is large, the pressure reducing valve can be opened, the low-pressure normal open valve can be closed, and the pressure reduction and supply of the fluid are realized; when the pressure reducing valve cannot be opened under the condition that the upstream pressure is small, the low-pressure normal open valve is opened, the supply of the fluid can also be realized; and the adaptability ishigher, so that normal proceeding of people in production and life is guaranteed, the influence on the production and life of people is avoided, and supportability of the self-operated structure is higher.

The present invention is preheating intake method and device for cold start of automobile. Alcohols or ethers are burnt to preheat air before the air is mixed with air intake to the engine. The auxiliary igniter set between the air inlet and the intake manifold of the engine includes one sealed cavity, one fuel inlet pipe connected between the fuel tank and the nozzle inside the sealed cavity, onepreheating evaporator in the fuel inlet pipe to heat the fed alcohol or ether fuel and to evaporate to form vapor flow in the nozzle and one igniting unit. By means of the auxiliary igniter, the alcohol or ether vapor and the air are mixed and ignited to produce high temperature fume, which is mixed with the main gas flow to raise the intake temperature of the automobile engine.

A drinking water heating and heat-preservation device matched with a motor vehicle consists of a water tank, a water feeding pipe, a water pump, a check valve, a touching and pressing switch, a press plate, a faucet, a cab mounting base, a water outlet pipe, a heating tank, a water temperature sensing lead, a temperature controller, an electric stove wire, an external water outlet pipe, an engine exhaust pipe and a power line. According to the drinking water heating and heat-preservation device matched with the motor vehicle, hot water for daily drinking or other purposes, such as dining, washing, car brushing and the like, is discharged through the water outlet pipe or the external water outlet pipe. When the water temperature is inadequate, the temperature controller starts the electric stove wire for heating through the water temperature sensing lead, so that the water temperature is stabilized within a set range (100 DEG C). According to the drinking water heating and heat-preservation device matched with the motor vehicle, waste heat produced by the engine exhaust pipe can be effectively used, and an independent water heating system is arranged, so that the normal hot water supply can be guaranteed regardless of the working state of an engine of the motor vehicle.