126results about How to "Play a role in stabilizing" patented technology

The invention belongs to the field of electronic information and provides a high-voltage switch power supply for a power modulator of a travelling wave tube. The power supply comprises an input circuit, a low-voltage storage capacitor, an inverter circuit, a step-up transformer, a rectifying and filtering circuit, a voltage-dividing and sampling circuit and an isolation feedback circuit. The power modulator of the travelling wave tube is realized. The power supply is characterized in that: an isolation closed-loop feedback switch power supply and the low-voltage storage capacitor are adopted, so that high output voltage stability, small size and light weight of the power modulator for a travelling wave tube amplifier are ensured, reliability is enhanced and cost is lowered.

The invention discloses a voltage converting circuit based on a single inductor and multiple outputs. The voltage converting circuit comprises a first switch tube, a second switch tube, an inductor, a first positive voltage output module and a second positive voltage output module, wherein a first end of the first switch tube receives an input voltage signal, a second end of the first switch tube is connected with one end of the inductor, and the other end of the inductor is connected with a first end of the second switch tube; input ends of the first positive voltage output module and the second positive voltage output module are connected to a common end of the inductor and the second switch tube, and output ends of the first positive voltage output module and the second positive voltage output module serve as corresponding voltage output ends; the first positive voltage output module comprises a third switch tube and a fourth switch tube which are in series-opposing connection; and the second positive voltage output module comprises a fifth switch tube. The voltage converting circuit based on single inductor and multiple outputs has more than two outputs, has wider application range and high energy utilization efficiency, and the outputs have little interaction.

The invention relates to a separated type open controllable anti-rolling tank structure which comprises a boat and tanks, wherein the tanks are independently arranged on the left side or the right side or a bow or a stern of the boat; the number of the tanks is not less than 1; a water inlet or a water draining outlet of each tank are formed in the tank; the water inlet or the water draining outlet of the tank is located under water; an air valve is arranged on the tank; an air suction opening or an air exhaust opening of the tank are formed in the air valve; the air suction opening or the air exhaust opening of the tank are above water; and the air suction opening or the air exhaust opening of the tank can be opened or closed by the air valve. Through the adoption of the tank, an anti-rolling tank can be more conveniently placed on the boat and is suitable for reducing rolling or pitching of the boat; and the anti-rolling tank is controllable and can be active or passive, so that a better anti-rolling effect is obtained; and when a gravitational moment generated by the tank is opposite to moment applied to the boat by waves in phase, the tank has an anti-rolling effect.

The invention relates to an automotive liquefied natural gas cylinder, and provides a liquefied natural gas cylinder integrating a low-temperature pump. Through redesign and reasonable allocation of a support sleeve of the low-temperature pump, the low-temperature pump can be stably arranged, and the heat leakage can be effectively reduced. The automotive liquefied natural gas cylinder comprises a housing, an inner tank and a low-temperature pump, wherein a heat-insulating space is formed between the housing and the inner tank; the inner tank respectively penetrates through a front-end support device, a low-temperature pump sleeve device and a rear-end support device and is connected to the housing; the low-temperature pump sleeve device comprises an inner side sleeve and an outer side sleeve; the inner side sleeve is of an integral structure; a flange plate is arranged on the upper part of the inner side sleeve; a base is arranged on the lower part of the inner side sleeve; a heat-insulating layer is formed between the flange plate and the base on the outer wall of the inner side sleeve; the bottom of the outer side sleeve is welded with the base on the inner side sleeve; and the low-temperature pump is fixedly arranged on the flange plate.

The invention discloses a heavy metal soil sampling device which comprises a top plate, a base plate, a sampling cylinder, a threaded rod, a lifting pedal and a lifting mechanism. The top plate and the left end of the base plate are fixedly connected through a vertical first supporting plate, the right end of the top plate is fixedly connected with the base plate through a vertical second supporting plate, the right end of the base plate extends to the outer side of the second supporting plate, and a vertical holding rod is fixed on the upper end face, a fixed pedal is fixedly welded to the front side of the left end of the base plate, the sampling cylinder passes through the top plate and the base plate and is vertically arranged, the right side of the sampling cylinder is provided with the threaded rod, the threaded rod passes through the bottom end of the base plate and is rotatably connected with the top end face of the base plate through a bearing block, the threaded rod is sleeved with a spiral sleeve, the spiral sleeve is fixedly connected with a lifting pedal, and the bottom end face of the lifting pedal is fixedly connected with a lifting mechanism. The heavy metal soil sampling device is ingenious in structural design, saves time and labor, and can be widely used.

The invention discloses an inductor structure which comprises an on-chip inductor and a shielding layer positioned below the on-chip inductor, wherein the shielding layer comprises multiple shielding units; the shielding units are orthogonal to the direction of eddy current generated by the on-chip inductor; the shielding units are composed of MOS (metal oxide semiconductor) transistors or metal wires or polysilicon; at least one among the shielding units is composed of MOS transistors; and source electrodes and drain electrodes of the MOS transistors are grounded. According to the inductor structure, the area below the on-chip inductor is fully utilized to realize the function of a voltage stabilizing transistor.

The invention discloses a method and device for recycling carbon disulfide from hydrogen sulfide tail gas during preparation of carbon disulfide. The method comprises the steps that the hydrogen sulfide tail gas containing carbon disulfide is introduced into a waste gas collector during preparation of carbon disulfide; the hydrogen sulfide tail gas which contains carbon disulfide and is contained in the waste gas collector is fed into a hydrogen sulfide compressor, the pressurized hydrogen sulfide tail gas containing carbon disulfide is fed into a condenser for condensation, liquid hydrogen sulfide is recycled, and gas hydrogen sulfide is conveyed into a hydrogen sulfide conveyance pipe to enter the hydrogen sulfide treatment process. The device comprises the waste gas collector, the compressor, the condenser, a carbon disulfide collector and the hydrogen sulfide conveyance pipe. According to the whole technology system, waste and sewage are not generated, so that carbon disulfide industrial production meets technological conditions of totally clean production, and production consumption is reduced to the maximum extent.

The invention relates to a refrigeration and supercharging system for pipeline structure environmental simulation. The system includes a high pressure helium inlet (16), a first level heat recovery exchanger (7), a second level heat recovery exchanger (10), a liquid nitrogen heat exchanger (8), and a liquid helium heat exchanger (9); high pressure helium is input into the high pressure helium inlet (16), and then successively passes through the first level heat recovery exchanger (7), the liquid nitrogen heat exchanger (8), the second level heat recovery exchanger (10), and the liquid helium heat exchanger (9), and finally is output to an object to be tested; return gas of the object to be tested successively passes through the second level heat recovery exchanger (10) and the first level heat recovery exchanger (7), and then is recycled again; and liquid nitrogen passes through the liquid nitrogen heat exchanger (8) and then is recycled, and liquid helium successively passes through the liquid helium heat exchanger (9), the second level heat recovery exchanger (10), and the first level heat recovery exchanger (7), and then is recycled. The system can simulate an integrated environment of pressure and low temperature, and can simulate an actual environment of high pressure, low temperature, temperature drop, and temperature rise.

The invention aims at the problem that in the prior art, the heating efficiency of a laminating machine in the laminating process is low, and provides a surface photovoltaic module laminating machine.The surface photovoltaic module laminating machine comprises an upper heating box and a lower heating box which are arranged face to face, a gas supplying, heating and pressurizing device and a vacuumizing device; each heating box comprises a cavity top plate, an elastic cavity partition plate and pressing strips which arrange the edges of the cavity partition plate on the cavity top plate in a sealing mode, wherein a heating cavity is formed between the cavity partition plate and the cavity top plate; the pressing strips of the two heating boxes face each other, the two cavity partition plates which are arranged face to face and the pressing strips form a sealed laminating cavity when the upper heating box and the lower heating box are closed, and the vacuumizing device is communicated with the two heating cavities and the laminating cavity; the gas supplying, heating and pressurizing device is communicated with the heating cavities and can fill heated and pressurized gas into the heating cavities; and the cavity partition plates are directly heated while pressure is generated by means of the heated gas, and therefore the heating efficiency in the laminating process is greatly improved.

The invention provides a light-emitting diode (LED) unit. In the LED unit, the light-emitting diode is connected in parallel with at least one diode of which the forward voltage drop is close to the working voltage of the light-emitting diode; and based on the principle of stabilizing the voltage with the forward voltage drop of the positive-negative (PN) junction of the diode, the working voltage of the light-emitting diode is stabilized. The invention also provides a constant-current unit voltage-stabilizing light-emitting diode (LED) traffic signal lamp. The traffic signal lamp comprises a current-rectifying bridge and at least one branch circuit which is formed by connecting the serially-connected LED unit and a constant-current control module in series. The voltage drop is realized by a constant-current unit voltage-stabilizing circuit and the voltage reducing power of the unit is very small, so that the whole control system does not use any power assembly and any heating element and the circuit can work stably and reliably.

The invention provides a fuel injector micro leakage test and seal test system and relates to the technical field of an engine part test device. A fuel tank is connected with an electric fuel pump, and provides fuel to an energy storage tank through the electric fuel pump, thereby ensuring sufficient fuel in a fuel path, and meanwhile, playing a certain pressure stabilization role; a pressure regulator is connected with an outlet of the energy storage tank; the pressure regulator carries with a fuel return system to ensure stable primary pressure in the fuel path and ensure the redundant fuel to the fuel tank; a heat exchanger is connected with the pressure regulator, and is used for ensuring change range of temperature of the fuel to be always kept within + / -1 degree in the test process; a fuel filter is connected with the heat exchanger, and is used for filtering impurities in the fuel; and a self-reliant pressure regulator is connected with the fuel filter, and is used for providing a certain pressure of fuel to a fuel rail and a standard pressure chamber, and controlling opening and closing of the fuel path between the self-reliant pressure regulator and the fuel rail through a solenoid valve A. The fuel injector micro leakage test and seal test system is fast in response speed, high in test precision, good in reliability and simple and quick to use.

The invention discloses a phase change memory chip layout structure. A phase change memory chip layout comprises a first layout area, a second layout area, a third layout area, a fourth layout area, a fifth layout area and sixth layout areas, wherein the first layout area, the second layout area, the third layout area and the fourth layout area are positioned in the center of the phase change memory chip layout; the first layout area is connected with the second layout area; the second layout area is connected with the third layout area and the fourth layout area; the third layout area is connected with the fourth layout area; the fifth layout area covers other blank areas in the center of the layout except the first layout area, the second layout area, the third layout area and the fourth layout area; and the sixth layout areas are uniformly distributed on four sides and four corners of the phase change memory chip layout. The phase change memory chip layout structure has reasonable chip layout and effectively reduces the noise of a voltage-controlled oscillator and the disturbance of the noise of a digital circuit on an analog circuit and a storage array.

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

The invention relates to the technical field of urban greening construction, and discloses a grass planting ditch based on sponge cities. The grass planting ditch comprises a groove, and a permeable layer is laid at the bottom of the groove. A sand layer is laid at the top of the permeable layer; a planting soil layer is laid at the top of the sand layer; a covering layer is laid at the top of theplanting soil layer; and a water storage layer is laid at the top of the covering layer. Blocking boxes located on the ground are fixedly mounted on the two sides of the groove, and each blocking boxis internally provided with a cavity. The grass planting ditch based on the sponge cities fixedly communicates with a connecting pipe through an overflow connector, and therefore ponding in the groove can flows into an overflow pipe through drainage holes, so that centralized treatment and ecological purification of urban sewage is facilitated; a locking plate drives a pulling rod to rise, and therefore the pulling rod drives fixing round plates and slide blocks to move up and down along slide grooves, so that a filter screen is convenient to take out, and the problem that efficacy of the grass planting ditch is lowered due to the overflow pipe being blocked by mass impurities during long term drainage is avoided.

Provided are anti-rolling water tanks with side ports and an anti-rolling method thereof. One or more pairs of the anti-rolling water tanks are arranged on the left side and the right side of the bow and / or the stern; each water tank comprises a compartment, the right side port and the left side port, the top of each compartment is provided with a compartment roof, and a water tank exhaust pipeline and a water tank drainage pipeline are arranged on the upper portion of each compartment roof; the left side ports of the port and the right side ports of the starboard are arranged above the hull waterline, the right side ports and the left side ports are connected with hull sides through rotating shafts, the right side ports and the left side ports can be opened or closed freely through the rotating shafts, after the right side ports and the left side ports are closed, the water tanks have the water-resisting property, and the water tank exhaust pipelines and the water tank drainage pipelines are arranged on the upper portions of the water tanks; the hull is internally provided with a rotor, the rotating shafts, a driving shaft, a control shaft, a pressure sensor, a controller and an angular speed gyroscope, wherein the rotating shafts are driven by the rotor to rotate, the rotor drives the control shaft through the driving shaft, the driving shaft is perpendicularly meshed with the control shaft, the pressure sensor is located below the portion, near the corresponding rotating shaft, of the water tank of the side of the hull, the angular speed gyroscope is connected with the controller, and the rotor, the pressure sensor and the angular speed gyroscope are all connected with the controller.

The invention provides an aquaculture net cage easy to clean. The aquaculture net cage comprises a net cage body, an adjustable cleaning brush structure, a connection ring structure, classified feeding tray structures, vertical setting rods, a bottom setting rod, connecting ropes, setting balls, a holding ring, a pedal, support rods, fixing hangers, a cross setting rod, connecting chains and floating balls, wherein the net cage body is connected with outer surfaces of the vertical setting rods and bottom setting rod in a tied mode separately, and the adjustable cleaning brush structure is inserted in the inner side of the holding ring in a connected mode. Through arrangement of a cleaning scraper and cleaning bristles, cleaning of algae on the net cage is facilitated, and therefore the service life of the net cage is prolonged; since an inner hollow rubber handle is particularly adopted as a handle, floating of the handle on the surface of water is facilitated, the cleaning scraper isprevented from sinking into the bottom of the water, and taking for use is facilitated; through arrangement of material placing trays, placing of feeding feed in the material placing trays is facilitated, and feeding of aquatic products at different depths is facilitated.

The invention discloses spring piece and mesh loading process equipment, relating to the technical field of injection molding process equipment. The process equipment comprises a bottom plate and a push plate, which are superposed together, wherein a plurality of spring piece locating pins are vertically installed on the bottom plate; the end of each spring piece locating pin passes through the push plate and protrudes out of the push plate; mesh suckers are also arranged on the bottom plate; mesh joint surfaces are arranged on the mesh suckers; a plurality of air holes are formed in the mesh suckers; one end of each air hole is arranged on the mesh joint surfaces and the other end is communicated with an air source; a bottom plate through hole is formed in the bottom plate and is used for driving a driving mechanism, moving in the vertical direction, of the push plate to pass through the bottom plate through hole. The spring piece and mesh loading process equipment has the effect of solving the technical problems of poor injection molding spring piece and mesh loading precision and low stability in the prior art, has high loading precision, high production stability and a simple structure and is low in production cost.

The invention discloses a motorcycle anti-lock braking system endurance testing experiment table which comprises an experiment table frame, an electronic control cabinet and a hydraulic loading device. The experiment table frame is provided with multiple motorcycle anti-lock braking system endurance testing devices. Each motorcycle anti-lock braking system endurance testing device comprises a power loading mechanism, a motorcycle simulation main cylinder, a motorcycle simulation wheel cylinder and a clamp, wherein a first pressure sensor is arranged on a pipeline, communicated with a motorcycle anti-lock braking system to be tested, of the motorcycle simulation main cylinder, a second pressure sensor is arranged on a pipeline, communicated with the motorcycle simulation wheel cylinder, of the motorcycle anti-lock braking system to be tested, and the first pressure sensor and the second pressure sensor are electrically connected with a control circuit of the electronic control cabinet. The motorcycle anti-lock braking system endurance testing experiment table can automatically test durability of the motorcycle braking anti-lock braking system, and is small in labor intensity and high in efficiency.

The invention discloses a pre-filter with automatic scraping and blowdown functions. The pre-filter comprises a filter casing, wherein a blowdown port assembly and an outer casing for sealing the blowdown port assembly are arranged at the lower end of the filter casing; the blowdown port assembly is connected with a filter net skeleton which is positioned in the filter casing; the blowdown port assembly comprises a blowdown pipe and a ball valve, and the ball valve is used for blocking or opening the blowdown pipe; the blowdown pipe can be controlled to automatically rotate; the ball valve canbe automatically controlled to open or close. The pre-filter has the advantages that the automatic blowdown and automatic cleaning functions are realized; the convenience in use is realized; in the use process, the automatic cleaning and blowdown functions can be realized by only presetting the automatic blowdown and cleaning intervals, and the use experience is better.

The invention provides an oil supply system of a saddle-shaped gasoline tank. The oil supply system comprises the saddle-shaped gasoline tank, a fuel pump, a siphoning mechanism and a siphon. A main gasoline tank body is arranged on one side of the gasoline tank, and an auxiliary gasoline tank body is arranged on other side of the gasoline tank. The fuel pump is arranged in the main gasoline tank body and conveys gasoline in the main gasoline tank body to an engine. The siphoning mechanism is arranged in the auxiliary gasoline tank body. One end of the siphon is communicated with the siphoning mechanism, the other end of the siphon is communicated with the main gasoline tank body, and therefore gasoline in the auxiliary gasoline tank body can be conveyed to the main gasoline tank body. The oil supply system further comprises an oil return pipe. One end of the oil return pipe is communicated with a high-pressure oil rail of the engine, and the other end of the oil return pipe is communicated with the siphoning mechanism. The oil supply system of the saddle-shaped gasoline tank is simple in structure, low in cost and high in stability.

The invention belongs to the technical field of food processing and molding technologies, in particular to a feeding and compounding assembly for food stuffing. The feeding and compounding assembly comprises feeding devices and a compounding device, wherein the feeding devices are connected with the compounding device, the compounding device comprises compounding head bodies and feeding pumps communicated with the compounding head bodies, and the feeding pumps are communicated with the feeding devices; and pump bodies, of which the number is at least two, correspond to the feeding devices of which the number is matched with that of the feeding pumps, and discharge ends of the pump bodies are communicated with guide pipes of the compounding head bodies. The feeding and compounding assembly has the advantages that the pump bodies are arranged through being respectively tangential to outer side edges of a discharge channel and a feeding channel, and horizontal cross sections of the pump bodies are circular, so that the internal cavities of the pump bodies have no dead corners, and the flowing resistance of materials is minimized; and the discharge channel is downwardly and obliquely arranged, so that the materials and grease contained in the materials are intensified to flow along with flour and stuffing after being squeezed out by the pumps, and the assemblage in a flowing channel is avoided.

The invention discloses an infrared signal processing circuit capable of reducing disturbance and relates to the technical field of infrared signal circuits. The infrared signal processing circuit capable of reducing the disturbance comprises an operation amplifier U6-A, the non-inverting input end of the operation amplifier U6-A is electrically connected with an infrared signal input end IR_SIG_IN, and the output end of the operation amplifier U6-A is electrically connected with a first voltage stabilization filtering circuit. The first voltage stabilization filtering circuit comprises a resistor R14 with two ends electrically connected with the inverting input end and the output end of the operation amplifier U6-A. The first voltage stabilization filtering circuit further comprises a diode D5 with an anode electrically connected with the output end of the operation amplifier U6-A. A cathode of the diode D5 is electrically connected with the inverted input end of the operation amplifier U6-A. The output end of the operation amplifier U6-A is further electrically connected with an infrared signal output end IR_SIG_OUT. The infrared signal processing circuit effectively removes disturbance signals, increases a radiation distance of infrared signals and improves the radiation performance of the infrared signals.

The invention belongs to the technical field of transformers, and particularly relates to an intelligent temperature and humidity regulating system for a transformer. The intelligent temperature and humidity regulating system comprises a master control module, a sensor interface module and a temperature and humidity regulating module, wherein the sensor interface module is connected with the master control module; the master control module is connected with the temperature and humidity regulating module. A sensor interface is connected with a plurality of sensors, the temperature and humidity in the transformer are monitored by utilizing the sensors, the information is transmitted to a master control chip for processing, then the temperature and humidity regulating module is controlled by the master control chip, a control signal is transmitted to a temperature and humidity controller, and then the temperature and humidity in the transformer are controlled, so that electrical apparatus elements in the transformer operate in a good environmental condition, the service life of the transformer is prolonged, and the cost is reduced.

The invention relates to an overvoltage-controlled LED constant current circuit. An RC filter circuit is connected with a voltage stabilizing circuit; a first current limiting branch circuit and a second current limiting branch circuit of a current limiting current are connected in series; the first current limiting branch circuit is connected with the voltage stabilizing circuit; the first current limiting branch circuit and the second current limiting branch circuit are respectively connected with a first LED concatenated branch circuit and a second LED concatenated branch circuit; an overvoltage circuit is connected with the RC filter circuit; the grid of an MOS tube Q5 is connected with a junction of a resistor R22 and a resistor R23; the source of the MOS tube Q5 is earthed; the base of a triode Q1 of a constant current source driving circuit is connected with the drain of the MOS tube Q5; the emitter of the triode Q1 of the constant current source driving circuit is connected earthed through a resistor R25; the collector of the triode Q1 of the constant current source driving circuit is connected with the first LED concatenated branch circuit; the base of a triode Q2 is connected with the drain of the MOS tube Q5; the emitter of the triode Q2 is connected earthed through a resistor R27; the collector of the triode Q2 is connected with the second LED concatenated branch circuit; a voltage stabilizing tube D5 is connected between the base of the triode Q1 and the resistor R25. According to the overvoltage-controlled LED constant current circuit, the circuit is simple; the overvoltage protection effect on an LED lamp group can be achieved; the luminous efficiency of the LED lamp group is improved; the service life of the LED lamp group is prolonged.

The invention discloses a novel intercooler tank which comprises an intercooler tank body, wherein an intercooler tank mounting surface, and an intercooler tank inlet air collection tank and an intercooler tank outlet air collection tank which are communicated with the intercooler tank mounting surface are arranged in the intercooler tank body, a condensation water discharge port is formed in the intercooler tank mounting surface correspondingly, and the surface of the intercooler tank body is provided with a booster support fitting seat, a high-temperature water inlet, a high-temperature water outlet, a low-temperature water inlet, a low-temperature water outlet, a sensor standby interface, a pressurized air outlet pipe fitting seat which corresponds to the intercooler tank inlet gas collection tank, and an intercooler tank air outlet pipe fitting seat which corresponds to the intercooler tank gas outlet collection tank. The novel intercooler tank has a simple structure, and is reasonable in design, a front end box part of a diesel engine is separated from the novel intercooler tank to be designed individually, so the casting and processing are easy, and the manufacturing cost is greatly lowered. The novel intercooler tank is suitable for an NY210 diesel engine with 6-9 cylinders, and has strong universal interchangeability, and the design and die manufacturing costs are saved.

The invention relates to the technical field of novel water valve devices, in particular to a water pipe valve control device which comprises a water control mechanism and a valve control mechanism, wherein the valve control mechanism is vertically mounted at the top of the water control mechanism. The water pipe valve control device has the beneficial effects that a water passing channel positioned at the middle of a valve core is controlled by adopting a valve plate; the internal pressure of a water pipe changes and different pressure is applied to one side of the valve plate; the valve plate is controlled by a spring to move, so that the size of a hole between the valve plate and the valve core can be controlled, the flow rate of the water passing channel positioned at the middle of thevalve core can be controlled, the internal flow rate of the water pipe can be stabilized, and the pressure stabilizing effect can be achieved; the valve core and a control valve core are jointly controlled by adopting a driving motor to open and close as well as the driving motor is controlled by a hydraulic cylinder to drive the control valve core, so that the working efficiency can be improvedand the whole structure can be simplified; and the water pressure on two sides of the valve core is balanced by adopting a communicating pipe before the valve core is opened, so that the smooth opening of the valve core can be facilitated and the valve core can be smoothly driven by the driving motor to open.

The invention relates to the technical field of low-temperature safety valve performance tests, and particularly relate to a low-temperature safety valve performance test system and a test method. Thesystem comprises a temperature adjustment assembly, a pressure adjustment assembly, a detection assembly and a shell-and-tube heat exchanger assembly, the shell pass inlet of the shell-and-tube heatexchanger assembly is connected with one end of a test medium input pipeline, and the pressure adjustment assembly is arranged on the test medium input pipeline; the shell pass outlet is connected with one end of the detection pipeline, a to-be-detected safety valve is arranged at the other end of the detection pipeline, the detection assembly is arranged on the detection pipeline at the shell pass output end, and the temperature adjustment assembly is arranged at the tube pass inlet and outlet of the shell-and-tube heat exchanger assembly. The system provided by the invention has the advantages that the shell-and-tube heat exchanger assembly is used, the pressure needed by a test is achieved through the shell pass and the pressure adjustment assembly, and the temperature needed by the test is achieved through the tube pass and the temperature adjustment assembly.

The invention discloses a movable rotating cleaning and drying platform for test tubes. Two-way cylinder, movable splint in the two-way cylinder, a limit rod on the top of the movable splint, a rotating plate on the upper end of the two-way cylinder, a cleaning dish on the top of the rotating plate, a placement plate on the inner wall of the cleaning dish, and a placement hole on the placement plate, two-way A motor is arranged at the lower end of the cylinder, a transmission shaft is arranged at the upper end of the output end of the motor, a water inlet pipe is arranged at the upper end of the base, a nozzle is arranged at the lower end of the water inlet pipe, and an ultraviolet lamp is arranged at the lower side of the upper wall of the base. The invention can efficiently clean the test tubes, and is convenient to improve the test tube replacement efficiency through the arrangement of movable cleaning dishes.

The invention discloses a drainage water quality energy recovery system for thermal equipment and pipelines of a thermal power plant. The drainage water quality energy recovery system for thermal equipment and pipelines of the thermal power plant comprises a turbine low-pressure steam extraction regenerative system and a heat engine drainage system, the low-pressure steam extraction regenerative system is connected with the heat engine drainage system, a low-pressure heater drainage pump regenerative system comprises a low-pressure heater drainage pump pipeline, and a drainage pump and a secondary last-stage low-pressure heater are arranged on the low-pressure heater drainage pump pipeline. The drainage pump is connected in series with the secondary last-stage low-pressure heater to form adrainage pump branch; the heat engine drainage system comprises a drainage flash tank and a condenser. The steam space of the drainage flash tank is connected with the steam space of the condenser through a first steam exhaust pipeline. The water space of the drainage flash tank is connected with a condenser hot well through a first drainage pipeline; the steam space of the drainage flash tank isconnected with the secondary last-stage low-pressure heater through a second steam exhaust pipeline; and the water space of the drainage flash tank is connected with an inlet pipeline of the drainagepump through a second drainage pipeline. Drainage water can be recycled to a condensation water system, the heat load of a condenser is reduced, and the back pressure behind a thermal drain valve ofa power plant is improved.