55results about How to "Reduce water spray" patented technology

The invention discloses a coal-fired power plant flue gas heat regenerative system and an energy-saving water-saving ultra-clean discharging method. The temperature of the flue gas is reduced to about 90-110 DEG.C through a low-temperature coal economizer, and the recycled flue gas heat heats primary and secondary wind entering a boiler through a steam air heaters, so that the first stage of heat regenerative cycles is achieved. The temperature of the flue gas at the outlet of a desulfurization tower is reduced to 30-40 DEG.C through a vacuum flash evaporation and solidification device and a low-temperature heat pump heat exchange device, and a part of water vapor of the flue gas is condensed and collected, so that water is saved. The low-temperature heat pump heat exchange device absorbs the latent heat released in flue gas sensible heat and condensation processes, and dry as-fired coal and air are heated, so that the second stage of heat regenerative cycles is achieved. A boiler slag discharge system recycles the waste heat of heat slag, and the as-fired coal is heated, so that the third stage of heat regenerative cycles is achieved. When the waste heat is not used up, the remained waste heat can be utilized, so that energy is saved. Low-temperature desulphurization slurry led out from the vacuum flash evaporation and solidification device is injected into the desulfurization tower, so that the desulphurization efficiency is improved, and an ultra-clean discharging objective is achieved.

The invention discloses a reheated gas temperature optimization control method based on multi-variable predictive control. According to the method, the whole hot steam temperature system is regarded as a two-in one-out multi-variable object, and the flow rate of reheated de-superheating jet water and the opening of a flue gas baffle plate are simultaneously controlled by adopting a multi-variable predictive control method; moreover, optimization of economical efficiency of the system is realized by adding a steady state target value of the opening of a reheated de-superheating jet water adjusting valve into optimization indexes of the conventional predictive control. By adopting the multi-variable predictive control method, coordination of side adjustment of flue gas and side adjustment of steam can be better realized, and the dynamic adjusting quality of the reheated steam temperature is further improved; and meanwhile, by adding the steady state target value of the de-superheating water adjusting valve into the conventional predictive control performance indexes, optimization of the de-superheating water jet quantity is realized, so that the circulating efficiency of a unit can be effectively improved.

The invention relates to an omnibearing sprayer which is provided with a bridge bracket fixedly installed on a motor vehicle box. A hydraulic motor is fixedly installed on the upper part of the bridge bracket. A vertically upward lifting oil cylinder with a piston rod is arranged inside the bridge bracket. A swing oil cylinder is hinged with one end of the piston rod of the lifting oil cylinder. A spraying faucet is fixedly installed at the end of the piston rod of the swing oil cylinder, a roll tube connector is fixedly installed at the root of the lifting oil cylinder, and the spraying faucet is connected with the roll tube connector through a soft tube. With the adoption of the technical scheme, the omnibearing sprayer sprays water in an omnibearing manner, so that not only is the spraying efficiency higher, but also the spraying range is wider. In addition, as the effective water consumption degree is improved, the omnibearing sprayer further has the effect of saving water.

The invention provides a dry-wet combined dual-cooling multi-condition cross-flow closed cooling tower and a regulating method for the running mode of the cooling tower, and belongs to the technical field of cooling by circulating water. The cooling tower comprises a tower body, draught fans, water absorbers, a finned tube bundle heat exchanger, a plain tube bundle heat exchanger, a water spraying system, air inlets, a filler, a water collecting tank, a make-up floating ball valve and a drain valve, wherein the inner cavity of the tower body is divided by the water absorbers into two parts: a left cavity and a right cavity; the draught fans are mounted at the top of the left cavity; a first spraying row tube, the finned tube bundle heat exchanger, a second spraying row tube, a plain tube bundle heat exchanger, the filler and the water collecting tank are arranged in the right cavity from top to bottom; and the first air inlet, the second air inlet and the third air inlet are formed in the right wall of the right cavity from top to bottom. The cooling tower provided by the invention has the advantage that the dry-wet combined dual-cooling multi-condition flexible conversion can be achieved by regulating the number of the draught fans which need to start up, the air inlets, the water amount and the water spraying tow tubes according to changes in the outdoor environment and those in the heat dissipating capacity of cooling water, thereby fulfilling the energy-saving, water-saving and efficient cooling purposes.

The invention discloses a flue gas dry desulfurization device. The device is a flue gas desulfurization device. According to the device, water spray amount in the desulfurization device is reduced, such that problems such as wall adhesion and scaling are avoided. The device comprises a flue gas inlet pipe, a desulfurization reactor, a settling chamber, a deduster, and a desulfurization agent recycling device. The flue gas inlet pipe communicates with the inlet of the desulfurization reactor. The outlet of the desulfurization reactor communicates with the settling chamber. A first flue gas outlet and a first desulfurization agent outlet allowing large-particle desulfurization agent to flow out are provided on the settling chamber. The first flue gas outlet communicates with the inlet of the deduster. A second flue gas outlet communicating with the external atmosphere and a second desulfurization agent outlet outputting desulphurization circulation ash are provided on the deduster. The first desulfurization agent outlet and the second desulfurization agent outlet are connected to the desulfurization agent recycling device. The desulfurization agent recycling device delivers recovered desulfurization agent to the inlet of the desulfurization reactor, such that the desulfurization agent can be used in flue gas desulfurization.

The invention relates to a car windscreen wiper, wherein, a strip-shaped air nozzle (2) is mounted in a bracket (1), the air nozzle (2) and the bracket (1) are arranged along the same direction, an airflow channel (3) is arranged on the air nozzle (2) along the direction of the length thereof, the diameter of the airflow channel (3) is reduced gradually from the back to the front, the back end of the airflow channel (3) is communicated with an intake pipe (4), and the front port of the airflow channel (3) is arranged at the end part of the front end of the bracket (1). The car windscreen wiper adopts high-pressure gas to clean up rain, splashed mud and other dirt from the surface of windscreen, so as to avoid scratching the glass surface; meanwhile, the load of a wiper motor is lower when working, the wiper motor is not easy to be damaged and the service life can be prolonged accordingly. The car windscreen wiper can be applied to any vehicle model, even trains, ships, aircraft and other places that need the work of the wiper.

The invention relates to the field of dust removers, and provides a novel wet-type electric dust removal device. The electric dust removal device comprises a dust removal chamber and a sewage discharging chamber which are arranged up and down and communicate with each other, wherein the dust removal chamber is provided with two opposite side walls, an air inlet is formed in one side wall of the dust removal chamber, and the other side wall of the dust removal chamber is provided with a defogging area and an air outlet; a plurality of rows of dust collecting polar plates are arranged in the dust removal chamber and in the direction of from the air inlet to the air outlet, wherein a corona wire is arranged between every two adjacent dust collecting polar plates in each row of dust collectingpolar plates, and the coronas are electrically connected with a high-voltage power supply; two spraying pipes are arranged in a V-shaped opening of each dust collecting polar plate; and air enters the dust removal chamber through the air inlet and then is discharged from the air outlet after passing through the defogging area. According to the novel wet-type electric dust removal device, wet typespraying and electrostatic dust removal are combined together, dust is wetted, and the potential safety hazard of a dry type electrostatic dust remover due to the problems of friction, static electricity and the like is effectively solved; and furthermore, spraying is carried out on the backs of the dust collecting polar plates so that a quite small amount of water can form uniform water mist, and therefore, the water spraying amount can be effectively reduced, and dust removal efficiency can be improved.

The invention provides a shaft-seal steam supply system for a secondary reheat unit. The shaft-seal steam supply system comprises a shaft-seal main pipe, an auxiliary steam supply station, an overflowcontrol station, a temperature reduction control station and an electric heating control station; the shaft-seal main pipe is provided with a plurality of first branch pipes which are respectively connected with an ultrahigh pressure cylinder rear shaft seal, an ultrahigh pressure cylinder front shaft seal, a high pressure cylinder front shaft seal, a high pressure cylinder rear shaft seal, a middle pressure cylinder front shaft seal and a middle pressure cylinder rear shaft seal, and the pipeline between the shaft-seal main pipe and the ultrahigh pressure cylinder front shaft seal is provided with the electric heating control station; the shaft-seal main pipe is also provided with a plurality of second branch pipes which are respectively connected with the auxiliary steam supply station,the overflow control station and the temperature reduction control station; and the tail end of the shaft-seal main pipe is also connected with a steam supply port of the low pressure cylinder shaftseal by virtue of the temperature reduction control station. The invention also provides a control method of the shaft-seal steam supply system for the secondary reheat unit. By adopting the shaft-seal steam supply system, the steam supply temperature of each shaft-end shaft seal can be accurately controlled, the power and size of an electric heater can be reduced, and the operation economical performance of the unit can be improved.

Water droplet guiding mechanism for a height-adjustable auto window (1) has a vertically extending holding section (2) that holds the window thanks to opposing side edges (1a), a belt line shaping piece with a near end that attaches to a lower frame of the window opening (20) on the outer side of the vehicle and a distal end that contacts the window. Projections (3) form both end sections of a lower edge (1c) of the window and extend downwards in order to allow water droplets to fall off.

The invention discloses a final-stage reheater temperature adjusting device and an operation method thereof. The final-stage reheater temperature adjusting device comprises a controller, a rotating motor, a driving wheel, a driven wheel, a hydraulic cylinder, a hydraulic cylinder piston rod, a smoke shielding baffle and a power box used for providing electric energy, wherein the smoke shielding baffle is located between a high-temperature superheater in a boiler horizontal flue and a final-stage reheater, an output shaft of the rotating motor is connected with the driving wheel, the driving wheel is matched with the driven wheel, the and driven wheel is connected with the upper end of the smoke shielding baffle; one end of the hydraulic cylinder piston rod is matched with the hydraulic cylinder, and the other end of the hydraulic cylinder piston rod is inserted into the boiler horizontal flue and then connected with the smoke shielding baffle; and the controller is connected with the control end of a piston cylinder and the control end of the rotating motor. According to the device and the operation method of the device, the phenomenon of contamination and slagging of the heating surface of the final-stage reheater in the long-term high-load operation state of the boiler can be effectively relieved, and the operation safety and reliability of a unit are improved.

The invention belongs to the technical field of fire-fighting equipment, and specifically relates to a fire-fighting spray head and a fire-fighting system with the same. The fire-fighting spray head comprises a spray head body, a sealing assembly, a temperature-sensing release assembly, a water splashing disc, and a flow detection assembly, wherein the spray head body comprises a water cavity anda support body, the water cavity is formed in the top of the support body, and the water cavity is provided with a water inlet port and a water outlet port; the sealing assembly is arranged at the water outlet port; one end of the temperature-sensing release assembly is abutted against one side of the sealing assembly; the other end of the temperature-sensing release assembly is connected with thewater splashing disc, and the water splashing disc is arranged at the bottom of the support body; and the flow detection assembly is located in the water cavity. According to the fire-fighting sprayhead, the flow detection assembly is arranged between the water inlet port of the spray head body and the sealing assembly, whether water leakage of the fire-fighting spray head is caused or not is detected through the flow detection assembly, and if so, the fire-fighting spray head is replaced or repaired, so that the problem of water resource waste caused by the water leakage of the fire-fighting spray head is avoided.

The invention discloses a method for automatically cleaning an observation window of a spray granulator. The method particularly comprises the following steps: external metal sliding block and glass wiper installing, spray debugging, normal spraying, internal wall cleaning of the observation window and glass wiper resetting. The method disclosed by the invention has the advantages that on the premises of not changing the structure of an existing spray tower body and not influencing the air tightness of the spray tower, a spray rod, the angle of a nozzle and the spray effect can be conveniently observed through the existing observation window and the observation window is clear in observation effect and is not easily polluted.

The invention relates to the field of sprinkling equipment, in particular to a water-spraying device for public greening.The water-spraying device for public greening is characterized in that a rotary spray head is hinged onto the top of a protection shield cover; a water-conveying pipe penetrates through a base to be communicated with the rotary spray head; a soil humidity sensor and a controller are arranged in the protection shield cover; a probe of the soil humidity sensor penetrates through the base to be inserted into greening land; a temperature sensor is arranged on the outer wall of a support ring; a flow regulating valve is arranged on the water-conveying pipe; an input end of the controller is electrically connected with the soil humidity sensor and the temperature sensor; and an output end of the controller is connected with the flow regulating valve.The water-spraying device and method for public greening have following beneficial effects: average flow required for each time of water spraying can be calculated in a real-time manner; the water quantity is controlled for spraying water in a continuously and periodically changing manner; on the condition that a requirement for public greening is satisfied, the water spraying quantity is decreased for more than 70%; water resources are greatly saved; and therefore the water-spraying device and method are especially suitable for a water shortage region.

The invention provides a cooking equipment, comprising an equipment body; an inner pot is set in the equipment body; a spray device sprays water into the inner pot through the mouth of the inner pot when the spray device is working; a foam detector used to detect the foam in the inner pot rising to the preset position releases the anti-overflow signal; a controller connected to a timer, the spraydevice and the foam detector is used to start the spray device when the anti-overflow signal is received, and continues to detect the anti-overflow signal after the spray device is started, and startsthe timer with the anti-overflow signal undetected; the timer is used to detect the delay time of the foam detector and triggers the controller to control the spray device to shut down when the delaytime reaches preset time. The cooking equipment provided in this scheme sets the spray device to delay spraying water into the inner pot for effectively breaking the bubbles and avoiding the foam backwash, and realizes the anti-overflow function of the cooking equipment, and reduces the water loss in the inner pot to ensure the cooking taste.

The invention is an evaporative air-cooled double-effect heat exchange device. A water catcher in the shell divides the inner space of the shell into a pre-cooling cavity and a main cooling cavity; wherein the shell of the pre-cooling cavity is provided with a circulating fan, which is used for pre-cooling. A pre-cooling heat exchanger is arranged in the cavity; an air inlet is arranged on the shell of the main cooling cavity, and a main cooling heat exchanger and a nozzle for spraying evaporative liquid to the main cooling heat exchanger are arranged in the main cooling cavity; The cold heat exchanger and the main cold heat exchanger are connected to each other by connecting pipes, the pre-cooling heat exchanger has a medium inflow pipe, and the main cold heat exchanger has a medium outflow pipe. The present invention combines the advantages of evaporative and air-cooled heat exchange devices, and on the premise of ensuring that the heat exchange effect reaches the level of the evaporative heat exchanger, the water consumption can be greatly saved, and the energy consumption of the system can be greatly reduced at the same time.

The invention discloses a household water well hand pump filter pipe, which employs a multi-layer filter pipe, the filtering effect is greatly enhanced, and flow velocity influence of current due to filtering can be reduced. Further, the upper end of a water taking cavity employs an inclined plane with certain angle, and is cooperated with a check valve, so that high water column and water attack problem can be effectively prevented, and generation of water spraying phenomenon is greatly reduced.