402 results about "Condensate pump" patented technology

The invention relates to the technical field of water pump fault diagnosis, discloses a condensate pump shafting vibration fault diagnosis method and device based on multi-parameter analysis and a medium, and solves the problems of sensor signal distortion and noise interference of a condensate pump under high-temperature and high-humidity working conditions through multi-source data fusion and environment adaptive compensation. Dynamic time-frequency domain feature extraction and an improved lightweight residual network are adopted, and efficient decoupling and accurate recognition of multi-fault concurrent features are achieved; the fuzzy inference rule base and the shafting fluctuation propagation model are combined, the fault positioning precision and the early fault detection rate are remarkably improved, scientific and reliable technical support is provided for diagnosis and maintenance of the shafting vibration fault of the condensate pump, and safe and stable operation of factory equipment is effectively guaranteed.

A thermal battery energy storage system coupled with a coal-fired generator set and its operation method, including a coal-fired generator set system and a heat pump energy storage system coupled with molten salt heat storage; the coal-fired generator set system includes a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a generator, a condenser, a condensate pump, a low-pressure heater, a deaerator, a feedwater pump, a high-pressure heater, and a boiler; the invention uses the exhaust steam of the low-pressure cylinder as a heat source to preheat the circulating working fluid in the thermal battery heat pump system, so that the total efficiency and COP of the system are increased, and the exhaust steam recovery and utilization capacity is enhanced. At the same time, the output load of the coal-fired unit is reduced, the peak-shaving range of the unit is expanded, and the peak-shaving depth is increased.

The invention discloses an energy-saving efficient refrigerating unit and process for preventing cavitation of a steam condensate pump in the technical field of refrigeration. The energy-saving efficient refrigerating unit comprises a high-pressure generator, a medium-pressure generator, a high-pressure evaporator, the steam condensate pump, a composite power generation compressor and a refrigerating assembly. Heat of saturated steam condensate flowing out of the high-pressure generator is absorbed by the high-pressure liquid refrigerant through the high-pressure evaporator, and the saturated steam condensate is changed into supercooled steam condensate, so that cavitation cannot be generated when the supercooled steam condensate enters the steam condensate pump, an original mode of increasing the height difference between the generator and the steam condensate pump is replaced, and the production efficiency is improved. The cost of a unit pipeline is reduced, meanwhile, the cost of ultrahigh transportation is reduced, heat contained in saturated steam condensate is converted into pressure energy of a high-pressure gaseous refrigerant to be used for driving a composite power generation compressor to work, the pressure energy is converted into electric energy and pressure energy of a low-pressure gaseous refrigerant, and the electric energy is used for a solution pump. The deep utilization of the internal energy of the unit can be realized, and the COP of the unit is improved.

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency is improved.

The invention discloses a condenser and flue gas waste heat utilization system for an ammonia power plant, which belongs to the technical field of power generation and comprises a condenser, a condensate pump, a circulating water regulating valve, a liquid ammonia regulating valve, an ammonia regulating valve, a primary flue gas heat exchanger, a secondary flue gas heat exchanger, a water collector, a steam extraction heater, a pure ammonia burner, a boiler, an air pre-heater, a chimney and a steam turbine. A condenser and a liquid ammonia evaporator are integrally designed, the condenser comprises a liquid ammonia cooling area and a circulating water cooling area, liquid ammonia gasification cold energy of an ammonia power plant is used for cooling steam exhausted by a low-pressure cylinder of a steam turbine, the heat exchange efficiency is improved, and the load of a cooling tower is reduced; the tail of the pure ammonia boiler is free of dust removal and desulfurization facilities, waste heat of high-temperature and high-humidity flue gas at the outlet of the air pre-heater is used for replacing steam extraction of a steam turbine to heat condensed water and low-temperature ammonia gas, the generating power of a unit can be increased, secondary condensation of the ammonia gas can be prevented, the combustion stability of the ammonia gas can be improved, and meanwhile a large amount of water in the flue gas can be recycled.

The invention discloses a low-pressure cylinder zero-output coupling steam heat accumulator which comprises an intermediate-pressure cylinder connected with a reheating hot section of a steam turbine; the low-pressure cylinder is connected with the output end of the medium-pressure cylinder; a cooling steam source is also connected; the generator is connected with the output end of the medium-pressure cylinder and / or the low-pressure cylinder to generate electric energy; the condenser is connected with the output end of the low-pressure cylinder; the condensate pump is connected with the output end of the condenser and further connected with the output end of the intermediate-pressure cylinder. The steam heat accumulator is connected with the output end of the medium-pressure cylinder; and the regenerative heating mechanism is respectively connected with the output ends of the steam heat accumulator and the intermediate pressure cylinder and is also connected with the input end of the condensate pump. In the deep peak regulation period of the unit, cooling steam enters the low-pressure cylinder, output of the unit can be reduced, part of heat is released through the steam heat accumulator, return water is heated and output through the regenerative heating mechanism, and deep peak regulation and thermoelectric decoupling of the unit are achieved.

The utility model discloses a feed pump core cladding protection system which comprises a circulating fluidized bed boiler, an outlet of the circulating fluidized bed boiler is communicated with an inlet of a steam turbine, an outlet of the steam turbine is communicated with an inlet of a condensate pump, and an outlet of the condensate pump is respectively communicated with an inlet of a slag cooler and an inlet of a booster pump. An outlet of the slag cooler is communicated with an inlet of the water feeding pump through a low-pressure heater and a deaerator in sequence; the booster pump outlet is communicated with the feed pump inlet; the outlet of the high-pressure heater is communicated with the inlet of the circulating fluidized bed boiler. According to the system, a bypass is additionally arranged beside a pipeline, leading to sealing water of a feed pump, of a condensate pump, a booster pump is additionally arranged on the bypass, and the pressure of condensate entering the feed pump seal is adjusted. The lowest pressure of the outlet of the condensate pump is set, once the pressure is smaller than the minimum pressure required by a sealing system, the booster pump is started immediately, stable condensate pressure is guaranteed, a water pump core bag is prevented from being damaged, and safe operation of a unit is guaranteed.

The utility model relates to the technical field of water heaters, and discloses a condensation type gas water heater, the condensation type gas water heater has a condensate water atomization discharge mode and a condensate water recycling mode, when any one of the condensate water atomization discharge mode and the condensate water recycling mode fails, the other mode can be started, and the condensate water atomization discharge mode and the condensate water recycling mode can be started. Condensed water in the condensation heat exchanger can be timely discharged, it is avoided that too much condensed water in the condensation heat exchanger flows back through the smoke inlet, it is guaranteed that the condensation type gas water heater can work normally, and the user experience is improved. The condensate water treatment unit is used for carrying out acid-base balance blending and impurity filtering on condensate water, and then the condensate water is atomized and discharged or recycled, so that the corrosion influence of the condensate water on the atomization unit, the condensate pump and the control valve group can be reduced, and scaling in the atomization unit, the condensate pump and the control valve group can be delayed; and the probability that condensate water blocks the atomization unit, the condensate water pump and the control valve group is reduced.

The invention belongs to the technical field of thermal power generation control, and particularly discloses an automatic control method for tripping of a high-pressure heater drain pump of a thermal power generating unit, which comprises the following steps: step 1, gradually reducing the coal quantity of the thermal power generating unit according to a preset first rate, and enabling the thermal power generating unit to run in a sliding pressure manner in a steam turbine tracking manner; 2, the real-time coal quantity of the thermal power generating unit is obtained, the total air volume and the primary air pressure are regulated and controlled according to the real-time coal quantity, meanwhile, the locking preset time of boiler core equipment of the thermal power generating unit is regulated and controlled, and the operation number of a coal pulverizing system is regulated and controlled; 3, the feed water flow of a feed pump, the pressure of a condensate pump, main steam parameters of a steam turbine and the final-stage high-pressure heater liquid level are regulated and controlled; and 4, whether the unit load, the feed water flow, the main steam parameters and the final-stage high-pressure heater liquid level meet the control ending conditions or not is judged in real time, and if not, the step 2 to the step 4 are repeated. According to the method, the non-planned shutdown frequency can be remarkably reduced, and the operation reliability and safety of the thermal power generating unit are greatly improved.

The utility model discloses a photovoltaic coupling high-temperature heat pump fused salt energy storage combined heat and power system. The system comprises a high-temperature heat pump energy storage module, a fused salt energy storage module, a steam generation module and a combined heat and power module. According to the high-temperature heat pump energy storage module, a photovoltaic power generation assembly is connected with a power supply controller, the power supply controller is connected with a motor, the motor is coaxially connected with an air compressor and an air turbine, and the air turbine is connected with an air-molten salt heat exchanger; according to the fused salt energy storage module, a fused salt electric heater is connected with a high-temperature fused salt storage tank, and a low-temperature fused salt storage tank is connected with an air-fused salt heat exchanger. According to the steam generation module, a water supply preheater is connected with a water supply evaporator, the water supply evaporator is connected with a water supply superheater, and the water supply superheater is connected with a steam turbine. The steam turbine is connected with the generator, the steam condenser is connected with the steam turbine, the steam condenser is connected with the condensate pump, and the condensate pump is connected with the low-pressure heater set. According to the system, a cascade energy storage mode is adopted, and unstable photovoltaic power generation is converted into stable electric energy output.

The utility model belongs to the technical field of dehumidification, and particularly provides a dehumidifier. The condenser aims at solving the problem that the heat exchange efficiency of a condenser of an existing dehumidifier is low. The dehumidifier comprises an evaporator, a water pan, a condenser, a water spraying tank and a pumping system. The evaporator is used for cooling air entering the dehumidifier so as to condense vaporous water in the air into liquid. The water pan is arranged on the bottom side of the evaporator and used for containing condensate water flowing down from the evaporator. The condenser is arranged on the top side of the water pan and located on one side of the evaporator in the thickness direction of the evaporator. The water spraying tank is arranged on the top side of the condenser so that water in the water spraying tank can be sprayed to the condenser. The pumping system is used for pumping condensate water in the water pan into the water spraying tank. According to the utility model, the condensate water in the water pan can be pumped to the water spraying tank through the pumping system, so that the water in the water spraying tank is sprayed to the condenser to cool the condenser, and the heat exchange efficiency of the condenser is improved.

The utility model provides a condensate water recovery system of a compressed air energy storage power station, which comprises a flash tank with a plurality of pipeline inlets, and the pipeline inlets of the plurality of pipeline inlets are respectively connected with drainage pipelines corresponding to all stages of gas-liquid separators. The flash tank is used for receiving condensate water separated by each stage of gas-liquid separator through the drainage pipeline; the condensate pump bypass is connected with the condensate pump in parallel, pipeline inlets of the condensate pump and the condensate pump bypass are connected with a pipeline outlet of the flash tank, and pipeline outlets of the condensate pump and the condensate pump bypass are connected with a circulating cooling system of the compressed air energy storage power station through a recycling pipeline. And the condensate pump or the condensate pump bypass is used for conveying condensate water to the circulating cooling system through the recovery pipeline when being started. According to the scheme, the condensed water separated by each stage of gas-liquid separator can be safely and effectively recovered and utilized, so that the waste of water resources can be avoided.

The invention belongs to the technical field of air-cooled condensers, and discloses an air-cooled condenser automatic dosing control method and related device.The method comprises the steps that the real-time flow of condensed water, the real-time frequency of a dosing pump and the real-time concentration of hydrogen peroxide at an outlet of a condensed water pump are obtained and input into a neural network prediction model, and a predicted value of the needed dosing amount is obtained through output; calculating the deviation between the predicted value of the required dosage and the target concentration and the deviation change rate according to the predicted value of the required dosage and the predetermined target concentration of hydrogen peroxide; inputting the deviation between the predicted value of the required dosing amount and the target concentration and the deviation change rate into the fuzzy neural network model, and outputting to obtain the frequency change value of the dosing pump; according to the dosing pump frequency change value and the dosing pump real-time frequency, a dosing pump frequency control value is obtained, and then a frequency control instruction is generated and issued to a frequency converter; according to the invention, the self-adaptive capability and robustness of the dosing system are improved while the dosing precision control is improved, and the stable operation of the air-cooled condenser is ensured.

Provided in the present invention are a primary frequency regulation dynamic simulation method and apparatus based on a thermal power condensate water throttling strategy, which are used for analyzing the dynamic characteristics of a unit when a power plant executes a primary frequency regulation instruction by means of a condensate water throttling strategy after a power disturbance occurs in a power grid. The dynamic characteristics mainly comprise the characteristics of a steam turbine speed governor system, the characteristics of a variable-frequency condensate pump system, the dynamic heat exchange characteristics of a low-pressure heater and extraction steam, the flow characteristics of an extraction steam pipeline, and the output characteristics of a steam turbine body. A moving boundary method is mainly applied to a heat exchange process between condensate water (a cold fluid) and shell-side extraction steam (a hot fluid) in a low-pressure heater. The heat exchange process between the cold and hot fluids can be divided into a superheated section, a phase change section and a subcooled section on the basis of the aggregation state of the extraction steam. When the moving boundary method is applied to a steam turbine regenerative system, the dynamic variation laws of extraction steam temperature and pressure can be more accurately obtained, and the extraction steam pressure on a low-pressure heater side is a key factor in determining the extraction steam flow rate on a low-pressure cylinder side, and is also critical in determining the instantaneous power increment of a steam turbine. Moving boundary method-based frequency regulation dynamic simulation for thermal power condensate water throttling takes into account relatively comprehensive actual process factors, and only one-dimensional modeling along an axial main flow direction is taken into account, thus combining the advantages of fast and accurate simulation. A fast and accurate simulation method is a prerequisite for implementing power grid frequency security analysis. By mastering the dynamic process of power plant load response from the moment a frequency deviation exceeds a dead band to the moment same returns to the dead band, a foundation can be provided for the primary frequency regulation control of power plants and the frequency security analysis of power grids.

The utility model belongs to the technical field of clothes treatment, and particularly relates to clothes treatment equipment. The clothes treatment equipment comprises a box body, an evaporator, a base, a first infusion pump and a steam generator, the evaporator is arranged in the box body and is configured to be used for condensing steam generated in the drying process of the clothes treatment equipment into condensate water, the base is arranged at the bottom of the box body, and a water collecting cavity is formed in the base; the water collecting cavity is configured to be used for collecting generated condensate water, the first infusion pump is communicated with the water collecting cavity, the steam generator is communicated with the first infusion pump, and the first infusion pump is configured to be used for pumping the condensate water in the water collecting cavity to the steam generator. According to the clothes treatment equipment, the first infusion pump can pump the condensate water in the water collecting cavity into the steam generator, so that the steam function of the steam generator is completed through the condensate water, the utilization rate of the condensate water is increased, water does not need to be injected into the steam generator manually, and the complexity of equipment operation is reduced.

The invention relates to a thermoelectric decoupling system coupled with fused salt energy storage and a method for improving the efficiency of the thermoelectric decoupling system. Comprising a steam boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a generator, a condenser, a condensate pump, a low-temperature fused salt tank, a high-temperature fused salt tank, a buffer tank, a steam-fused salt heat exchanger, a main steam-fused salt heat exchanger, a reheated steam-fused salt heat exchanger, a steam ejector, a heat exchanger, a steam superheater and a saline water double-medium heat storage tank. A heat exchanger 15 is arranged between the low-pressure cylinder and the steam boiler, and a steam outlet of the salt-water double-medium heat storage tank is connected with a steam superheater to exchange heat with high-temperature molten salt. The unit extracts part of main steam and reheated steam under the stable combustion load working condition of the boiler to store energy in a heat-heat conversion mode, and under the heat release working condition, the boiler operates under the stable load, heat in the high-temperature fused salt and saline water double-medium heat storage tank is released, boiler feed water is heated, and the power capability of the unit is improved.

The present disclosure relates to and envisages a condensate recovery skid system comprising a receiver with a common condensate inlet (105) and outlet (110) for handling high loads of condensate at elevated temperatures from process equipment. The system further comprises a plurality of steam-operated condensate pumps that fluidly connect with the receiver to receive, pump, and discharge the condensate. A motive steam inlet header (135) supplies steam to power the pumps. Additionally, a set of redundant pumps ensures uninterrupted operation by activating in case of any pump malfunction. All components — the receiver, condensate pumps, motive steam inlet header, and redundant pumps — are configured within a skid, enhancing installation flexibility in various industrial settings.

The invention provides a dead steam condensation waste heat recovery system with a gradually-shrinking Tesla valve structure. The dead steam condensation waste heat recovery system mainly comprises a compression type condenser with the gradually-shrinking Tesla valve structure, a condensation water tank, a vacuumizing device and a condensation water pump. The working process of the system comprises the steps that at the initial stage of commissioning, low-temperature dead steam enters the compression type condenser under the action of the vacuumizing device, the low-temperature dead steam is gradually compressed, heated and subjected to heat release by means of the one-way conduction, compression and acceleration effects of the gradual shrinkage type Tesla valve structure on fluid, latent heat in the dead steam is transferred to a cold source and converted into liquid water, and the liquid water enters the condensation water tank; and the condensate is pumped away by a condensate pump for cyclic utilization. The tapered Tesla valve is applied to dead steam waste heat recovery, no large rotating part is arranged in the whole compression heat release process, system operation can be maintained through a vacuumizing device, dead steam phase change boosts formation of high vacuum degree, dead steam suction is accelerated, and higher heat transfer efficiency and energy efficiency ratio can be obtained; as a cold end optimization solution, efficient condensation and waste heat recovery are achieved.

The invention provides a vibration reduction method and device for a vertical condensate pump. The vertical condensate pump aims at accurately adjusting resonance points, reducing vibration hazards and improving the running stability of the vertical condensate pump. The vibration reduction method of the vertical condensate pump is applied to the vibration reduction device, and the vibration reduction device comprises a motor, a controller, a fixing support and a lead screw. Acquiring the real-time rotating speed of the vertical condensate pump; on the basis that the real-time rotating speed is matched with a target rotating speed in a preset information base, a vibration reduction adjusting scheme of the vertical condensate pump at the target rotating speed is stored in the preset information base, and the vibration reduction scheme is used for controlling a vibration reduction device to adjust the supporting force of a lead screw for supporting the vertical condensate pump at the target rotating speed. The amplitude data corresponding to the resonance point of the vertical condensate pump is adjusted to be within the corresponding standard amplitude data range; and if the matching is consistent, determining a motor control instruction based on the corresponding vibration reduction adjustment scheme, and sending the motor control instruction to the controller.

The invention discloses a waste incineration power station waste heat utilization system integrating biomass gasification, and relates to the field of biomass resource utilization and energy conservation and emission reduction, and the waste incineration power station waste heat utilization system integrating biomass gasification comprises a waste incineration boiler, a steam circulation generator set, a flue gas purification system and a biomass gasification and waste heat recovery coupling system. Exhaust gas of the turbine is conveyed to a condenser through a pipeline and condensed into water through the condenser, and the condenser is connected with a condensate pump through a pipeline. The flue gas purification tower receives flue gas discharged by the waste incineration boiler through a pipeline and purifies the flue gas, and the treated flue gas is connected with the bag-type dust collector through another pipeline for retreatment; the waste incineration boiler conveys gas to the biomass gasification furnace through a pipeline, and the biomass gasification furnace generates straw fuel gas and conveys the straw fuel gas to the cyclone separator through a pipeline. Compared with the prior art, the system has the advantages that the energy utilization efficiency is improved; the investment cost is reduced; the smoke exhaust loss is reduced; the economic benefit is improved.

The invention belongs to the technical field of thermal power generation, and particularly relates to a feed pump recirculation system for preventing cavitation of a minimum flow valve of a thermal power generating unit. The feed pump recirculation system comprises a condenser, a condensate pump, a low-pressure heat regenerator set, a deaerator, a feed pump and a high-pressure heat regenerator set which are sequentially connected, each stage of extraction steam of an external steam turbine is connected with steam inlets of the high-pressure heat regenerator set, the deaerator and the low-pressure heat regenerator set, and a condensate outlet of the high-pressure heat regenerator set is connected with a condensate inlet of the deaerator. A condensed water outlet of the low-pressure heat regenerator set is connected with a condensed water inlet of the condenser, the water feeding pump sequentially passes through the minimum flow valve, the heat exchanger and the first stop valve and is connected with the deaerator, and external cooling water enters the heat exchanger through the third stop valve for heat exchange and then is discharged. The return water temperature of the feed pump recirculation system is reduced through the heat exchanger, the saturated steam pressure corresponding to the return water is reduced, the cavitation risk of the minimum flow valve is reduced, and the service condition of the minimum flow valve can be obviously improved.

The present invention provides an anti-cavitation condensate pump, an anti-cavitation condensate pump control method and a control system. The anti-cavitation condensate pump includes: a volute; a diameter-adjustable pipe is installed at the water inlet end of the volute; a water pressure sensor is installed at least at the inlet of the diameter-adjustable pipe, the impeller inlet of the volute and the water outlet end of the volute, and is used to obtain water pressure measurement data, wherein the water pressure measurement data is used to generate an adjustment instruction; a driving device, which is connected to the diameter-adjustable pipe and is used to adjust the diameter of the diameter-adjustable pipe according to the adjustment instruction. The anti-cavitation condensate pump, the anti-cavitation condensate pump control method and the control system provided by the present invention obtain water pressure measurement data, that is, the operating conditions of the condensate pump, through the water pressure sensor, obtain an adjustment instruction for various operating condition information, and adjust the diameter of the diameter-adjustable pipe according to the adjustment instruction, so that the condensate pump meets the anti-cavitation performance requirements under the corresponding operating conditions.

The utility model relates to a small-size low-weight condensate pump for a chemical offshore platform, which comprises a pump body provided with a horizontal inlet and a horizontal outlet, a pump cover connected above the pump body, and a pump shaft arranged between the pump body and the pump cover, a driving side bearing body and a non-driving side bearing body are arranged on the two sides of the pump shaft, the driving side bearing body and the non-driving side bearing body adopt a semi-flange plate form, the driving side bearing body adopts a radial bearing of a deep groove ball bearing, and the non-driving side bearing body adopts two thrust bearings which are arranged back to back and have angular contact ball bearing structures. The blades on the two sides of the impeller are arranged in a staggered mode, the main axial force in the operation process of the pump shaft can be balanced, the leakage phenomenon of the sealing face can be effectively prevented, the sealing effect is guaranteed, and the working efficiency of the pump is improved. And the bearing body adopts a semi-flange form, so that the vibration is further reduced, and the stable operation of the pump is ensured.

The utility model belongs to the technical field of dry quenching waste heat power generation, and particularly relates to a dry quenching waste heat power generation deoxygenization water supply system. Comprising EDI (electrodeionization) equipment, a steam extraction condensing steam turbine or a pure condensing steam turbine, a condenser, a condensate pump, a demineralized water tank of a dry quenching boiler water supply pump station, a deoxygenization water supply pump, a deoxygenization water supply regulating valve group, a three-way valve, a water-water heat exchanger, a water supply preheater and a thermal deaerator. The utility model has the beneficial effects that a desalting water tank and a secondary desalting water pump of a desalting water station are omitted; the fixed pressure difference of the regulating valve is used as main regulation, and the three-way valve is used as auxiliary regulation to ensure normal operation of sampling equipment; after deoxygenated water supply is heated by the water-water heat exchanger, one part of sewage is fed into the dry quenching body circulating water tank for normal production, and the other part of sewage is fed back to a sewage discharge well, so that the temperature of the sewage is reduced, heat and water resources are fully utilized, and meanwhile, the adverse effect of white smoke generated by sewage discharge on a drainage system and the environment is eliminated.

The invention belongs to the technical field of energy conservation and emission reduction of sintering circular coolers, and particularly relates to a sintering circular cooler medium-temperature area cross circulation combined waste heat total recovery and zero emission system which comprises a circular cooler, a circular cooling air blower, a waste heat boiler, a circulating fan, a steam turbine generator unit, a condenser and a condensate pump. The waste heat boiler is formed by combining two sets of waste heat boilers, one set of waste heat boiler is a first-section and second-section waste heat boiler, flue gas is taken from a first section and a second section, and exhaust air at the bottom of the first-section and second-section waste heat boiler returns to the first section and the second section through a circulating fan; the other set of waste heat boiler is an overhead three-section waste heat boiler, flue gas of the three-section waste heat boiler is taken from a third section, exhaust air of the three-section waste heat boiler returns to a fourth section, and flue gas of the fourth section returns to the third section; the two waste heat boilers are communicated with a steam supplementing opening of the steam turbine generator unit. The system has the advantages that a new waste heat utilization steam and hot water circulation system is constructed by utilizing the steam supplementing and condensing type steam turbine, and zero emission is realized.

1. Name of the product in this design: Condensate pump with liquid level sensor (for clothes dryer). 2. Purpose of this design: For draining condensate from a clothes dryer. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the field of coal electricity, in particular to a steam extraction transformation and heat supply system of a secondary reheat unit. The existing secondary reheating unit cannot meet the requirements of heat consumption and deep peak regulation of a power plant, is difficult to transform and is easy to jump. The invention provides a secondary reheat unit steam extraction transformation and heat supply system which comprises a boiler, a heat supply part, a cylinder part with an ultrahigh pressure cylinder, a high pressure cylinder, an intermediate pressure cylinder and a low pressure cylinder, a steam extraction unit composed of an ultrahigh pressure side and steam part, a high pressure side and steam part and a low pressure side and steam part, and a condensation water and water supply part with a condenser, a condensation pump, a deaerator and an electric pump. The boiler is connected with all the parts through pipelines, when a unit is started and parameters of the ultrahigh pressure cylinder, the high pressure cylinder and the intermediate pressure cylinder are unqualified, steam sent to the pressure cylinders is sent to the heat supply part through the steam extraction unit, and water of the condenser is sent to the boiler through the condensate pump, the deaerator and the electric pump. The steam supply demand change and heat supply of the unit in the deep peak regulation period can be met, stable operation is achieved, and trip is prevented.

A double bypass control extraction steam type hybrid heat exchange frequency modulation system, including a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a condenser, a condensate pump, a lower-level low-pressure heater, a first bypass controller connected to the lower-level low-pressure heater through a main pipeline, an upper-level low-pressure heater, a second bypass controller connected to the upper-level low-pressure heater through a main pipeline, a deaerator, a high-pressure heater directly connected to the deaerator through a pipeline, and a reheater whose inlet is connected to the second bypass controller through a pipeline and to the high-pressure cylinder through a steam pipeline, and whose outlet is connected to the medium-pressure cylinder through a steam pipeline. The present invention can quickly respond to the frequency modulation requirements of the power grid to the load changes of the unit, avoid frequent switching of the steam inlet automatic regulating valve during turbine frequency modulation, operate stably and reliably, ensure safe operation of the turbine, significantly improve the life and flexibility of the unit, save energy significantly, and have a large frequency modulation range. It can be widely used in the field of flexible frequency modulation of power plants.

The present application relates to a kind of thermal power generating unit control technical field, is a kind of thermal power generating unit condensate pump automatic control system energy-saving optimization method and device, the former includes determining by deaerator water regulating valve control condensate pump outlet header pressure, then judge deaerator water regulating valve whether full open;In response to no, reduce condensate pump outlet header pressure set value, until deaerator water regulating valve full open;In response to yes, judge current deaerator water regulating valve opening degree whether with condensate pump energy-saving operation match;In response to no, increase condensate pump outlet header pressure set value, until current deaerator water regulating valve opening degree with condensate pump energy-saving operation match.The present application is by lifting the opening degree of deaerator water regulating valve, reduce the throttling loss caused by deaerator water regulating valve opening degree low, simultaneously make the throttling loss of deaerator water regulating valve minimum and condensate pump outlet header pressure maximum, in reducing energy loss while guaranteeing the economy of condensate pump operation.