54results about "Boiler cleaning control devices" patented technology

The invention discloses a boiler blow-down water waste heat recovery control method, system and equipment and a medium. The method comprises the following steps that the current waste heat recovery efficiency eta of a waste heat recovery system is obtained; the current scaling coefficient R of a heat exchanger in the waste heat recovery system is obtained; according to the current waste heat recovery efficiency eta and the current scaling coefficient R, the heat transfer coefficient K of the heat exchanger is obtained; the current temperature T and the water quality concentration ratio C of the boiler are obtained; and inputting the heat transfer coefficient K, the current temperature T and the water quality concentration ratio C into a preset discharge capacity optimization model to obtain the optimal discharge capacity Q. The method has the advantages that the discharge capacity can be adaptively adjusted, and the boiler safety and waste heat recovery requirements can be balanced.

The invention relates to the technical field of high-temperature gas cooled reactors and discloses a cleaning device which comprises a positioning assembly, a pushing assembly, a guiding assembly, a spray needle and a visual assembly, the positioning assembly comprises a connecting piece capable of moving in any direction of the X-axis direction, the Y-axis direction, the Z-axis direction and the Z-axis circumferential direction, the pushing assembly is connected with the connecting piece, and the guiding assembly is connected with the visual assembly. The pushing assembly comprises a moving part capable of moving in the Z-axis direction, the guiding assembly is connected with the pushing assembly and comprises a guiding hole, the guiding assembly can be connected with any to-be-cleaned assembly and enables the guiding hole to be communicated with a working cavity of the to-be-cleaned assembly, the spraying needle is arranged on the moving part, and the moving part can drive the spraying needle to penetrate through the guiding hole and be inserted into the working cavity. The spray needle can spray out a cleaning medium to clean the working cavity, the visual assembly comprises a camera, and the camera can observe the state of the spray needle. The cleaning device provided by the embodiment of the invention can be used for quickly positioning and cleaning the tubular parts such as the throttling assembly, so that the manpower is saved.

To stabilize the water quality of boiler water in a boiler, thereby preventing the generation of carry-over in which a large amount of boiler water is mixed into generated stream, corrosion of each part of a can body, and an overheat state of a heat transfer surface due to the adhesion of scale to a can wall surface.SOLUTION: A method of stabilizing the water quality of boiler water in a boiler is provided. A water supply pump for supplying the boiler water to the boiler is intermittently operated. Whenever the water supply pump is intermittently operated, blow operation for discharging the boiler water to the outside of a can is performed.SELECTED DRAWING: Figure 2

The application discloses a chemical cleaning liquid level control system and method for a power station boiler, which comprises a water storage tank, a differential pressure liquid level transmitter, a liquid level interlocking controller, a drainage electric valve, a cleaning water inlet valve, a cleaning backwater pipeline, a cleaning water inlet pipeline and a circulating cleaning system; the water storage tank, the cleaning backwater pipeline, the circulating cleaning system and the cleaning water inlet pipeline are sequentially connected to form a circulating pipeline; the cleaning backwater pipeline is further connected to a drainage system at a water outlet end; the liquid level steam side communication pipe and the liquid level water side communication pipe of the water storage tank are both connected to the differential pressure liquid level transmitter; the drainage electric valve is arranged at the water outlet end of the cleaning backwater pipeline and is connected to the drainage system; and the input end of the liquid level interlocking controller is electrically connected to the differential pressure liquid level transmitter, and the output end is connected to the drainage electric valve. The application solves the problems of high equipment failure rate, high human error rate, unreliable control measures and high labor intensity of personnel in the conventional chemical cleaning liquid level control technology.

The present application relates to a kind of alkali recovery furnace water washing process, the process includes the following steps: step one: after alkali recovery furnace shutdown, open disc valve, plug valve and hearth furnace door, carry out hearth cooling;Step two: after cold furnace, washing water is pumped to alkali recovery furnace soot blower by feed water pump, by soot blower flushes the surface of heat exchange element, and the slagging and coking material therein is cleaned up completely;Washing waste water is recycled by dissolving tank and venting tank;Step three: after washing furnace, by hot air into air supply system, air draft system exhaust, dry hearth and heat exchange element;Step four: after drying furnace, in chute pouring castable, repair the part that is washed away by combustion melt and washing water, a kind of alkali recovery furnace water washing process designed by the present application can conveniently clean ash and remove coke with high efficiency, good effect, can effectively guarantee the cleanliness of heat exchange element, improve alkali recovery furnace operating efficiency.

The invention relates to the technical field of steam generators and discloses a method for cleaning a throttling assembly of a steam generator, which comprises the following steps: S1, a control system selects the throttling assembly according to the position information of the selected throttling assembly; s2, the positioning module is controlled to be in butt joint with the interface; S3, a flushing needle is controlled to be inserted into a channel by a preset depth along a positioning hole; S4, a pump station is controlled to supply a cleaning medium to the flushing needle, the flushing needle is controlled to withdraw in the axial direction of the channel, and in the withdrawing process, the flushing needle is driven by the mobile platform to move; the flushing needle can continuously rotate around the axis of the flushing needle, S5, the flushing needle is controlled to completely retreat from the channel, and S6, the control system controls the moving platform to drive the cleaning module to return to the initial position, and the steps are repeatedly executed till all the selected throttling assemblies are cleaned. According to the cleaning method for the throttling assembly of the steam generator, the throttling assembly of the steam generator can be rapidly positioned and cleaned.

The invention provides a cleaning system for a throttling assembly of a high-temperature gas cooled reactor steam generator, and relates to the technical field of cleaning equipment for throttling assemblys.The cleaning system comprises a machine base, a mechanical arm, a positioning device and a cleaning device, and the mechanical arm is arranged on the machine base; the positioning device and the cleaning device are both arranged on the mechanical arm, the mechanical arm can adjust the positions of the positioning device and the cleaning device relative to a throttling assembly to be cleaned, and the positioning device is used for positioning the position of the throttling assembly to be cleaned; the cleaning device comprises at least one of a hole cleaning mechanism and a cavity cleaning mechanism, the hole cleaning mechanism is used for cleaning throttling holes of the to-be-cleaned throttling assembly, and the cavity cleaning mechanism is used for cleaning the inner circumferential wall of the to-be-cleaned throttling assembly. According to the cleaning device, the position of the to-be-cleaned throttling assembly can be accurately positioned, so that the cleaning device can accurately reach the to-be-cleaned throttling assembly to clean the to-be-cleaned throttling assembly, and the cleaning effect and efficiency are improved.

To provide a dust removal system and a dust removal method, which can more reliably remove dust from within a combustor.SOLUTION: A dust removal system comprises two shock wave generation devices each configured so as to generate a shock wave for removing dust in a combustor. The two shock wave generation devices each include: a chamber configured so as to be filled with a mixture containing a fuel and an oxidizing agent; an ignition device for igniting the mixture in the chamber; and a launch unit for using a detonation wave produced by the ignition by the ignition device to launch a shock wave into the combustor. The two shock wave generation devices are arranged so that two shock waves respectively launched from the two launch units reinforce one another due to interference. The dust removal system further comprises an ignition control unit configured so as to send, to each of the two ignition devices, an ignition command for starting ignition.SELECTED DRAWING: Figure 1

The present invention is a method for feeding a chemical to a steam system that controls the injection of a water treatment chemical to the steam system, the method being for feeding a chemical to the steam system that comprises: a pressure sensor, a temperature sensor, or a steam trap as a steam circulation detection means provided to the steam system; and a chemical feed pump for injecting the water treatment chemical to the steam system, said steam system controlling the injection of the water treatment chemical by means of the chemical feed pump in accordance with the steam circulation detection status of the steam circulation detection means.

The invention provides a generator set waste heat utilization system and a control method, and relates to the technical field of efficient utilization of industrial waste heat, by establishing a continuous blow-down water vaporization proportion correction calculation formula and introducing a continuous blow-down sewage waste heat coefficient, high, medium and low states of continuous blow-down sewage waste heat are calculated, and the continuous blow-down water vaporization proportion correction calculation formula is established. Whether a low-pressure cylinder of the generator set exhausts air to supplement a heat source or not and whether an intermediate heat exchanger is used for achieving primary heating of heating return water are judged, efficient recovery of waste heat of the generator set in a generator and an evaporator of the lithium bromide heat pump unit is achieved through a waste heat utilization system and a control method, and it is guaranteed that the heating return water reaches the common heating required temperature; the impact on the waste heat utilization system caused by changes of the continuous sewage discharge rate, continuous sewage thermal parameters and the like is avoided, the discharged sewage waste heat is recycled to be used for the heating system, and the operation stability and reliability of the heating system using the discharged sewage waste heat are improved.

The start-up time of a power generation unit having a steam generator, a steam turbine rotated by steam generated by the steam generator, a condenser that cools and condenses exhaust steam from the steam turbine to produce condensed water, and a vacuum pump that sucks and discharges non-condensable gases in the condenser is shortened. [Solution] The system comprises a start-up preparation step for preparing to start up the power generation unit 1, a water quality improvement execution step for gradually executing each process of the water quality improvement process for improving the water quality within the equipment to be improved, including the condenser 4 and the once-through boiler 7 as a steam generating device, and an ignition step for preparing the once-through boiler 7 for ignition and then igniting the boiler, and the operation of increasing the vacuum of the condenser 4 is reserved in the water quality improvement execution step and is performed in the ignition preparation step of the ignition step.

Disclosed is a method of pre-operational cleaning of water and steam systems in a combined cycle power plant (1, 1') including a gas turbine engine (2), a steam turbine system (4), a condenser (6), and a heat recovery steam generator HRSG (3). The method comprises: performing a pre-operational initial flushing and chemical cleaning operation on the water and steam system of the finally constructed combined cycle power plant (1, 1'); firing the gas turbine engine (2) and commissioning the gas turbine engine (2); and, while the gas turbine engine (2) is being commissioned, performing a validation steam blow procedure including a steam blow operation, wherein steam is generated in the HRSG (3) and blown at high velocities, temperatures and cleaning force ratio conditions through a portion of a closed flow circuit for cleaning steam-carrying parts of the HRSG (3) and steam lines (39-51) connecting the HRSG (3) to the steam turbine system (4), wherein the steam is routed to bypass the steam turbine system (4) via operational bypass lines (52-54), without using any temporary piping, and is discharged to the condenser (6); and monitoring and validating cleanliness of selected steam blown steam lines (39-54). A combined cycle power plant (1, 1') arranged for performing such a pre-operational cleaning is also disclosed.

The invention discloses a steam pocket device for removing reaction heat and generating steam, and belongs to the technical field of chemical equipment. The device comprises a steam pocket and a tubular reactor, the tubular reactor is communicated with the steam pocket through a conveying pipeline, reaction heat generated in the reaction process can be transferred to the steam pocket, and heat absorption and cyclic utilization are achieved. A water level detector is arranged in the steam pocket and comprises a monitoring floating ball and a control part, the monitoring floating ball can monitor the water level depth of waste water, and the control part can control the sewage discharge pipeline to discharge sewage when the water level reaches an early warning line; an adjusting piece is arranged between a high water level detection piece and a low water level detection piece in the control part, and the water level control interval can be flexibly adjusted; secondly, efficient recovery of reaction heat and resource utilization of steam are achieved, and accurate water level control and comprehensive water quality management functions are achieved; the pH value of water is adaptively adjusted, the steam extraction efficiency is greatly improved, and a large amount of scale is prevented from appearing in the steam pocket.

To provide a control system which enables reduction of a water circulation pipe clean-up process in a gas-gas heater device 200.SOLUTION: At a control system of a water circulation pipe 4 clean up process in a gas-gas heater device 200, including a heat recovery device 2 configured to recover heat from exhaust gas of a boiler 71, a heater 3 which increases a temperature of a process gas, and the water circulation pipe 4 located between the heat recovery device 2 and the heater 3, in a flushing process of the water circulation pipe 4, drainage tank draining control means 102 of an information processing device 1 controls drainage tank draining means 46 so that a water level of a drainage tank 52 received by drainage tank water level receiving means 104 is maintained at a level lower than a setting value. Further, water circulation control means 105 of the information processing device 1 controls a water supply valve 47 and circulation water draining means 45 so that a water storage amount of a circulation water tank 51 received by circulation water tank water storage amount receiving means 103 is maintained in a predetermined amount or larger amount and the water level of the drainage tank 52 received by the drainage tank water level receiving means 104 becomes lower than a predetermined value.SELECTED DRAWING: Figure 7

The utility model provides a comprehensive utilization system for continuous discharge water of a power plant, which relates to the technical field of boiler continuous discharge water recovery and comprises a steam pocket, a continuous discharge flash tank is arranged at one end of the steam pocket, a deaerator is arranged at one end of the continuous discharge flash tank, and a water pump is arranged at one end, far away from the deaerator, of the continuous discharge flash tank. An electric stop valve is arranged at one end of the water pump, and a second stop valve is arranged at the end, away from the water pump, of the electric stop valve. According to the utility model, the continuous discharge flash tank is used for carrying out capacity expansion on the continuous discharge water of the boiler to recover flash steam, meanwhile, the expanded continuous discharge water is combined with external supply steam, so that the continuous discharge water is output as the external supply steam, the recovery control system is used for controlling the quality of the supply steam, and energy and water resources in the continuous discharge water are recovered; the key parts of the recovery system are reasonably selected and designed, continuous and stable operation of the recovery system is ensured, and meanwhile, the system is provided with a plurality of bypasses, so that operators can conveniently overhaul and maintain at any time.

The invention relates to a method of controlling a maintenance operation apparatus (10) of a recovery boiler (11) to carry out maintenance operation for an at least one maintenance object (S1-S14) at a recovery boiler (11) wherein the maintenance operation apparatus (10) comprises a maintenance tool (13) and a tool moving device (R1-R5) for moving the maintenance tool (13) to accomplish the maintenance operation, and wherein the method comprises method steps of a) defining a position of a fixed world coordinate system (20) at the recovery boiler (11), b) defining a position of an initial base coordinate system (21) of the at least one maintenance object (12) that is at a chosen point of the at least one maintenance object (S1-S14) determined in the fixed world coordinate system (20) in an initial temperature of the recovery boiler (11), c) defining a position of a corrected base coordinate system (22) of the at least one maintenance object (S1-S14) in the fixed world coordinate system (20) that is at the position of the chosen point in the fixed world coordinate system (20) in a transited temperature of the recovery boiler, (11), d) controlling the tool moving device (R1-R5) to carry out the maintenance operation of the at least one maintenance object (S1-S14) in the corrected base coordinate system (22). The invention relates also to a maintenance operation apparatus (10).

Provided is a chemical injection method for steam system for controlling injection of water treatment chemicals into a steam system, in which, in response to a pressure sensor, a temperature sensor, or a steam trap as a steam circulation detection part provided in the steam system; a chemical injection pump for injecting the water treatment chemicals into the steam system; and a steam circulation detection status of the steam circulation detection part, the injection of the water treatment chemicals by the chemical injection pump is controlled.

The present invention provides a heat pump type steam generator that can suppress the decrease in output steam volume even when blowdown water is drained. [Solution] A heat pump type steam generator 1 comprises a heat pump unit 2, a steam separator 13 that separates the two-phase gas-liquid flow generated by heat transfer to the water to be heated in the condenser 23 into steam and hot water, a water level sensor L, a water circulation channel L10, a steam channel L4 that sends the steam separated in the steam separator 13 as output steam to an external steam utilization facility, a supply water channel L1, a water supply pump 10 that supplies supply water to the supply water channel L1 so that the water level of the hot water detected by the water level sensor L reaches a predetermined value, and a blowdown water channel L5 that extracts a portion of the hot water separated in the steam separator 13 and discharges the extracted hot water as blowdown water. A heat recovery unit 11 is provided to perform heat exchange between the blowdown water and the supply water and recover the heat from the blowdown water into the supply water.

The application discloses a steam recirculation system and method for delaying dry-wet state conversion, comprising a steam recirculation module, a water storage flash module and a sewage heat recovery module. Steam at the outlet of a steam-water separator is mixed with a working medium in an intermediate header of a water cooling wall by using a steam ejector to directly control the dryness of the working medium in the vertical water cooling wall, so that the working medium at the outlet of the water cooling wall is still dry steam under low load. Meanwhile, a flash evaporator is used to replace a recirculation water pump, and flash evaporated steam and flash evaporated saturated water are respectively sent into a steam-water separator and a deaerator to realize low-energy-consumption recycling of saturated water in a water storage tank. A sewage cooler is added to heat boiler feed water, heat of sewage discharged from the water storage tank is recycled, the temperature of the feed water is increased, dry-wet state conversion of the boiler is delayed, and the boiler can still be operated in a dry state under low load.

To effectively inject a boiler compound into a can body of a boiler, thereby stabilizing the water quality of boiler water.SOLUTION: A water supply pump for supplying boiler water to a can body of a boiler is intermittently operated. Whenever the water supply pump is intermittently operated, action for injecting a boiler compound to the boiler water is performed.SELECTED DRAWING: Figure 2

The application discloses a coal-fired power plant blowdown steam optimal utilization system and an operation method. The system comprises a blowdown steam collecting device, which is provided with an inlet, and the inlet is connected with a blowdown steam pipeline; an adjusting pipeline is communicated with the inner cavity of the blowdown steam collecting device, and is used for supplying cooling water and adjusting the temperature of water in the blowdown steam collecting device; a drain port is arranged at the bottom of the blowdown steam collecting device, and the drain port is communicated with a drain pipeline, and a water supply device is communicated with the drain pipeline; the system further comprises a control device, a temperature detection device and a pressure detection device, the temperature detection device is arranged in the blowdown steam collecting device, the pressure detection device is arranged on the drain pipeline at the water outlet of the water supply device, and the control device is electrically connected with the temperature detection device and the pressure detection device. The application fully utilizes the energy of the blowdown steam, and can dynamically adjust the parameters of the blowdown steam to form hot water to match different user requirements, so that the application scene of the blowdown steam with a single parameter is wider.

This method suppresses the contamination of steam generated from boiler water containing polyacrylic acid compounds with aldehydes. [Solution] Water is supplied to the boiler 20 through the water supply path 13. The boiler 20 stores the water from the water supply path 13 as boiler water and generates steam by heating this boiler water. At this time, a water treatment agent containing a polyacrylic acid compound such as sodium polyacrylate, which functions as a scale inhibitor, is added from the chemical supply device 40 to the water supply from the water supply path 13 to the boiler 20, and the boiler 20 controls the copper concentration of the boiler water to 3 mg / L or less in the presence of the polyacrylic acid compound derived from the water treatment agent. It is particularly preferable to use a polyacrylic acid compound with a residual monomer content of 1.0 mass% or less and to control its presence in the boiler water to 10 to 300 mg / L.

The invention relates to the technical field of environment-friendly treatment equipment of a coal-fired power plant, in particular to a pneumatic boosting type anti-blocking slag removal system and method for an ash ditch of the coal-fired power plant, and solves the technical problem that equipment for effectively dealing with high-density bottom slag and realizing automatic anti-blocking and desilting of the ash ditch is lacked in the prior art. According to the content, a distributed intelligent sensing unit, a precise execution unit, a central intelligent control unit and an integrated self-maintenance unit are built based on a PLC automatic control system; the distributed intelligent sensing unit is composed of a level meter, a flow sensor and a pressure sensor, and a real-time digital twinborn model of the ash ditch conveying state of a sensing strategy is reversely formed according to the length and the flow of the ash ditch. The precise execution unit is composed of a plurality of sets of purging units and a compressed air header which are matched to form purging subareas; the central intelligent control unit is used for controlling the mode of purging partitions, performing accurate purging operation and eliminating blockage; and the integrated self-maintenance unit is used for controlling a discharge mode set by the pollution discharge interface according to time by acquiring a threshold value of the level gage.

To provide a water treatment management device and a water treatment management method that can accurately determine the status of chemical injection while increasing the frequency of such determinations. [Solution] The system comprises a chemical tank 10, a chemical remaining amount detection unit 60, an input amount calculation unit 22, and a chemical injection status determination unit 24. The input amount calculation unit 22 calculates the input amount for each calculation period, and the chemical injection status determination unit 24 determines the quality of the chemical injection status by comparing the cumulative input amount, which is the sum of the input amounts during the target period, with the change in the amount of chemical remaining during the target period. Part of the target period for the current determination can overlap with part of the target period for the previous determination.

The application relates to a pure steam generator for pressure sterilization of medical equipment, and belongs to the technical field of pure steam generators. The pure steam generator comprises a steam generator body, a support frame fixed on the steam generator body, a liquid tank and a reagent storage tank fixed on the support frame, a control assembly for controlling the liquid discharge amount in the liquid tank and the scale inhibitor discharge amount in the reagent storage tank, and a mixing assembly for mixing the liquid and the scale inhibitor; the control assembly comprises a liquid pipe communicated with the liquid tank, a reagent pipe communicated with the reagent storage tank, a liquid discharge plate movably arranged on the liquid pipe, a reagent discharge plate movably arranged on the reagent pipe, a translation piece for driving the liquid discharge plate to move, and a driving piece for driving the reagent discharge plate to move, and the translation piece is automatically driven by the driving piece. The pure steam generator can control the discharge amount of the scale inhibitor according to the liquid discharge amount, so that the liquid is not affected by too little liquid and too much liquid scale inhibitor.

The application relates to a sodium-cooled fast reactor direct-flow evaporator chemical cleaning system, which comprises a device to be cleaned, a cleaning tank and a cleaning platform; the cleaning tank is provided with a liquid level meter for monitoring the water level of the cleaning tank; the top of the cleaning tank is provided with a cleaning tank water supplement pipeline for water injection into the cleaning tank; the bottom of the cleaning tank is provided with a cleaning tank discharge pipeline for water discharge of the cleaning tank; a cleaning tank recirculation loop and a cleaning agent preparation circulation loop are arranged between the cleaning platform and the cleaning tank; the cleaning tank recirculation loop is used for recirculation of the cleaning tank; the cleaning agent preparation circulation loop is used for adding cleaning agents into the cleaning tank; a corrosion monitoring pipeline and a device-to-be-cleaned equipment cleaning circulation loop are arranged between the cleaning platform and the device to be cleaned; the corrosion monitoring pipeline is used for monitoring the corrosion condition in the circulating cleaning process of the device to be cleaned; and the device-to-be-cleaned equipment cleaning circulation loop is used for circulating cleaning of the device to be cleaned. The application realizes efficient, safe and environmentally-friendly cleaning of the sodium-cooled fast reactor direct-flow evaporator.

To facilitate temporary introduction, introduction and installation, removal or the like of an apparatus for removing dust.SOLUTION: A trestle according to the present invention includes: a plurality of support columns; a bottom part to which lower end portions of the support columns are fixed; a rail; a fixing part that is fixed to upper end portions of the support columns and fixes the rail; a trolley that moves along the rail; and a hanging part that is fixed to the trolley and suspends a pressure wave apparatus that emits pressure waves.SELECTED DRAWING: Figure 1A

To provide a blow water neutralizing device capable of grasping abnormality at an early stage.SOLUTION: The blowdown water neutralization device is a device for neutralizing blowdown water using boiler exhaust gas, and includes a tank for storing blowdown water, an exhaust gas supply device for supplying boiler exhaust gas to the blowdown water, an acid consumption sensor for detecting the acid consumption of the blowdown water in the tank or the blowdown water in a circulation flow path connecting the tank and the exhaust gas supply device, and an expected neutralization time calculation unit for calculating an expected neutralization time required for the exhaust gas supply device to neutralize the blowdown water based on the measurement result of the acid consumption sensor.SELECTED DRAWING: Figure 2

The invention relates to a method for cleaning a pressure-resistant boiler region (10) by means of a pressure pulse (21) generated by a cleaning device (20), which pressure pulse is guided into the boiler (10) via an outlet opening (22) associated with the cleaning device (20), wherein the pressure pulses are output into the boiler region (10) by a control unit (30) at a cleaning interval predetermined by a cleaning device (20) for generating the pressure pulses, characterized in that a measured value characterizing the degree of contamination of the boiler is recorded by means of a sensor (40), the measured value is compared with a predetermined first threshold value, and the first threshold value is determined by means of the control unit (30). Wherein the cleaning interval is set to a shorter cleaning interval and / or the cleaning energy is set to a higher cleaning energy if a first threshold value is exceeded or below depending on a correlation of the measured value with the degree of contamination.