54 results about "Boiler feedwater pump" patented technology

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.

This utility model discloses an energy-saving device for nitric acid recovery, including a demineralized water preheater. The outlet of the demineralized water preheater is connected to the inlet of a second demineralized water heater, and the outlet of the second demineralized water heater is connected to the inlet of a nitrogen oxide cooler. It also includes a nitrogen oxide compressor, the outlet of which is connected to the inlet of a first demineralized water heater, and the outlet of the first demineralized water heater is connected to the inlet of a rapid cooler. Furthermore, it includes a demineralized water boiler feed pump, the outlet of which is also connected to the inlet of the first demineralized water heater, the outlet of the first demineralized water heater, and the outlet of the second demineralized water heater, which is also connected to the inlet of the demineralized water preheater. Compared to existing technologies, this utility model adds two demineralized water heaters, recovering heat from nitrogen oxides through demineralized water, reducing the amount of circulating water used, and simultaneously reducing the amount of steam used in the steam drum.

The utility model relates to a bearing frame structure for boiler feed water pump, the bearing frame structure includes: bearing frame body, bearing frame cover, bearing frame end frame and reinforcing rib board, bearing frame body and bearing frame cover are welded together, bearing frame end frame and bearing frame body are welded together, reinforcing rib board and bearing frame end frame, bearing frame body are welded together, and after bearing frame body and bearing frame cover are welded, form a closed cavity between the two, the bearing frame body is provided with cooling water inlet hole and cooling water outlet hole, and cooling water inlet hole and cooling water outlet hole are communicated with the closed cavity and the outside. The bearing frame structure for boiler feed water pump provided by the utility model can not only meet the needs of structure and strength, but also can play the role of pressure relief, cooling and the like.

The present invention provides a self-balancing reheating system for a waste incineration and disposal power station and an operation method thereof. The biogas does not directly enter the furnace for incineration, which will not affect the operation of the waste heat boiler, and avoids the problems of high-temperature corrosion of the reheater in the traditional in-furnace reheating method and the low economy of the out-of-furnace reheating unit. The landfill leachate treatment station is connected to the biogas storage tank; the biogas storage tank is connected to the biogas incineration furnace through a biogas booster fan; the steam outlet of the superheater is connected to the steam inlet of the high-pressure cylinder of the steam turbine; the steam outlet of the high-pressure cylinder of the steam turbine is connected to the low-temperature steam inlet of the low-temperature reheater; the low-temperature reheater is connected to the high-temperature reheater; the steam outlet of the high-temperature reheater is connected to the steam inlet of the intermediate and low-pressure cylinders of the steam turbine; the extraction steam outlet of the high-pressure cylinder of the steam turbine is connected to the extraction steam inlet of the low-temperature reheater; the exhaust steam outlet of the intermediate and low-pressure cylinders of the steam turbine is connected to the exhaust steam inlet of the condenser; the low-temperature reheater is connected to the deaerator; the condenser is connected to the deaerator through a condensate pump; the deaerator is connected to the superheater through a boiler feed pump.

The invention relates to the field of high-pressure boiler feed pumps, and particularly discloses an energy-saving balanced type high-pressure boiler feed pump which comprises a pump body, a pump shaft, a tail cover and a bearing cover, the pump body is provided with a liquid inlet section and a liquid outlet section, the pump shaft is provided with a plurality of impellers, and the pump shaft is provided with a synchronous barrel abutting against the back faces of the impellers close to the non-driving end. A coarse adjustment plate is fixedly connected to the synchronous cylinder, a throttling gap is reserved between the coarse adjustment plate and the pump body, a fine adjustment plate is arranged on the peripheral wall of the coarse adjustment plate, a fine balance cavity is reserved between the back face of the fine adjustment plate and the pump body, and a control mechanism used for controlling hydraulic pressure of the fine balance cavity is arranged in the pump body. A separation mechanism used for separating the coarse balance cavity and the fine balance cavity is arranged in the pump body, and a supply mechanism used for supplying balance liquid into the coarse balance cavity is arranged on the pump body. The pump has the advantages that the axial thrust is balanced, the pump shaft does not need to axially float, the stability is high, and the rough adjustment plate and the fine adjustment plate cannot be abraded.

The ship boiler water supply device comprises a main boiler set and an auxiliary boiler set, the main boiler set and the auxiliary boiler set are arranged on an iron outfitting base at intervals, the main boiler set comprises a main boiler, a main water pipe and a main boiler water supply pump, the main water pipe is communicated with the main boiler and a hot well of a ship, and the main boiler water supply pump is arranged on the main water pipe; the auxiliary boiler set comprises an auxiliary boiler, an auxiliary water pipe and an auxiliary boiler feed pump, the auxiliary water pipe is communicated with the auxiliary boiler and the hot well, and the auxiliary boiler feed pump is arranged on the auxiliary water pipe. According to the ship boiler water supply device, the problems that a traditional ship boiler water supply device is scattered in arrangement, large in occupied space, complex in installation, inconvenient to maintain and the like are solved, hoisting installation can be completed at a time, the integrated design of the ship boiler water supply device is achieved, and the installation efficiency of the ship boiler water supply device and the integrity of a system are improved.

The present invention relates to the technical field of heat energy utilization, and in particular to a process and device for utilizing heat energy in sulfuric acid production. In the process for utilizing heat energy in sulfuric acid production, a first heat exchanger and / or a second heat exchanger and / or a third heat exchanger are additionally arranged in a sulfuric acid production process. The first heat exchanger heats air entering a sulfur incinerator, and high-temperature heat in flue gas is transferred into a steam system in a waste heat boiler to generate medium-pressure steam and high-pressure steam. The second heat exchanger heats flue gas from an HRS tower, and the heated flue gas enters a cold-hot heat exchanger for heat exchange with flue gas from an outlet of a third section of a converter to further increase the temperature, so as to meet process requirements. The third heat exchanger heats boiler feed water from a boiler feed water pump, the boiler feed water then enters an economizer 3A and / or an economizer 4B, and this portion of heat added by the boiler feed water is used for generating medium-pressure steam and high-pressure steam. Compared with the prior art, three heat exchangers are added, and are flexibly configured on the basis of different use scenarios and objects, significantly improving the yield of medium-pressure steam and high-pressure steam.

The present application belongs to the technical field of dry quenching waste heat power generation, and particularly relates to a dry quenching waste heat power generation oxygen removal feedwater system and a regulating method thereof, comprising an EDI electric desalination device, an extraction condensing steam turbine or a pure condensing steam turbine, a condenser, a condensate pump, a dry quenching boiler feedwater pump station desalination water tank, an oxygen removal feedwater pump, an oxygen removal feedwater regulating valve group, a three-way valve, a water-water heat exchanger, a feedwater preheater and a thermal deaerator. The present application has the beneficial effects that the desalination water tank and the secondary desalination water pump of the desalination water station are saved; the fixed pressure difference of the regulating valve is used as the main regulation, and the three-way valve is used as the secondary regulation, so that the normal operation of the sampling device is ensured; after the blowdown water is heated by the water-water heat exchanger to oxygen removal feedwater, part of the oxygen removal feedwater is sent into the dry quenching body circulating water tank for normal production, and the other part of the oxygen removal feedwater is sent back to the blowdown well to reduce the blowdown water temperature, so that the heat and water resources are fully utilized, and the adverse effects of the "white smoke" generated by blowdown on the drainage system and the environment are eliminated.

The utility model discloses a novel no-load running check valve, belongs to the technical field of boiler feed pump self-circulation, and aims to solve the problems of a traditional no-load running check valve. The check valve comprises a first valve body which is in a four-way shape, a lower opening of the first valve body is a main path inlet, an upper opening of the first valve body is a main path outlet, a left opening of the first valve body is an inlet side bypass, a right opening of the first valve body is an outlet side bypass, a throttling sleeve is connected with the inlet side bypass in a sealed mode, and a main valve element rod and the throttling sleeve are matched with a plurality of sealing convex rings through a plurality of bypass sealing flanges. The main path valve clack assembly is in sliding fit with the throttling sleeve and is in sliding sealing with the main valve element rod, the crank seat is in sealing fit with the outlet side bypass, a plurality of crank bodies are hinged to the crank seat, the second spring pushes the main path valve clack assembly leftwards through the crank bodies, and the throttling assembly is arranged in the outlet side bypass. The design of the outlet side bypass is added, the use function of the valve is increased, and the outlet side bypass can be used as a preheating pipeline or a backflow pipeline.

The utility model discloses a boiler feed water quality treatment system which comprises a sodium ion resin exchange device and a reverse osmosis water purification unit which are connected in series, a multi-medium filter and an activated carbon filter are sequentially arranged at the front end of the sodium ion resin exchange device, the multi-medium filter is connected with a tap water source through a pipeline, and the activated carbon filter is connected with a reverse osmosis water purification unit through a pipeline. And the rear end of the reverse osmosis water purification unit is respectively connected with silk making equipment and a boiler feed pump. According to the boiler feed water quality treatment system disclosed by the utility model, the reverse osmosis water purification unit and the sodium ion resin exchange equipment are connected in series for use, and the reverse osmosis water purification unit is arranged behind the sodium ion resin exchange equipment, so that the service life of a reverse osmosis membrane can be effectively prolonged; the boiler feed water is subjected to operations such as impurity removal, salt removal, hardness removal and oxygen removal, so that the stable and reliable water supply is realized, and the water quality requirement of an industrial boiler is met; the boiler operation safety, the service life and the boiler energy efficiency can be improved, and strict control over the water quality of boiler feed water is achieved.

The present application relates to the technical field of boiler feed water pump cavitation control, and discloses a self-adaptive adjustment method and system for preventing cavitation of a boiler feed water pump, which acquires the inlet pressure, inlet water temperature and feed water flow of the pump in real time, calculates the effective net positive suction head NPSHa and looks up the required net positive suction head NPSHr, calculates the margin coefficient and makes a judgment, and drives the frequency converter and the inlet regulating valve to adjust in coordination according to the judgment result. The system comprises a parameter acquisition unit, a self-adaptive controller, an actuator and a man-machine interaction unit. The present application can effectively prevent cavitation from occurring and reduce the energy consumption of the feed water pump by real-time dynamic calculation and coordinated adjustment of the net positive suction head, and can adapt to the nonlinear pressure variation characteristics of sliding pressure operation, and balance the rapidity of cavitation protection and the economy of operation.

The utility model relates to the technical field of boiler water supply, in particular to a boiler water supply pressure stabilizing device which comprises a fixing seat and a boiler water supply pump, a carbon steel pressure stabilizing tank is fixedly connected to the inner wall face of the fixing seat, and a water inlet pipe is fixedly installed on the upper portion of the outer surface of the boiler water supply pump in a penetrating mode. An input pipe is fixedly installed in the middle of the right end of the boiler water feeding pump in a penetrating mode, the right end of the input pipe is fixedly connected with the lower portion of the left end of the carbon steel surge tank in a penetrating mode, a check valve is movably installed on the right portion of the outer surface of the input pipe in a penetrating mode, and a water feeding pressure stabilizing set is fixedly connected to the middle of the inner wall face of the carbon steel surge tank. According to the boiler water supply pressure stabilizing device, the carbon steel pressure stabilizing tank and the water supply pressure stabilizing set inside the carbon steel pressure stabilizing tank are arranged, water flow entering the device is buffered and adjusted in a multiple mode, the water flow is decelerated and dispersed in sequence, the flow direction of the water flow is changed, the water flow is more stable in the carbon steel pressure stabilizing tank, impact and fluctuation of the water flow are effectively reduced, and the service life of the water supply pressure stabilizing device is prolonged. Therefore, the pressure output to the boiler water supply pipe network is stabilized.

The invention relates to a dry quenching mother tube type boiler system, in particular to a dry quenching mother tube type boiler system and a control method thereof, which are used for controlling the dry quenching mother tube type boiler system. Comprising the steps of monitoring the state of a feed pump in the system to obtain monitoring information; judging the shutdown number of the feed pump according to the monitoring information; and the dry quenching main tube type boiler system is regulated and controlled according to the shutdown number of the water feeding pumps. The automatic interlocking coke discharging device can automatically interlock to stop coke discharging operation after the shutdown of a boiler feed pump is automatically detected, solves the problem of manual coke discharging operation stopping, reduces circulating air volume and improves boiler feed water quantity through automatic interlocking, balances the relation between evaporation capacity and feed water quantity at the lowest operation load, realizes low-load operation, automatically interlocks nitrogen filling and reduces air introduction quantity, and improves the coke discharging efficiency. It is guaranteed that combustible components in the dry quenching furnace are within the control range, and the operation safety risk of the boiler is effectively solved.

The invention relates to the technical field of power pumps, in particular to a limiting device for preventing a rotor of a boiler feed pump from moving. When the boiler feed pump is started, the elastic piece pushes the rotor to enable a gap to be formed between the balance disc and the balance seat sleeve, and when the shaft drives the rotor to rotate at a low speed, the elastic piece pushes the rotor to enable the balance disc and the balance seat sleeve to rotate at a low speed. When the rotating speed of the rotor rises and the generated axial force is larger than the elastic force applied by the elastic piece, the balance disc moves, redundant axial force is counteracted through the pressure difference between the two sides of the balance disc, and at the moment, pressure between the balance disc and the balance seat sleeve is generated. Therefore, the balance disc is not contacted with the balance seat sleeve, and the possibility of abrasion of the balance disc is reduced.

The utility model belongs to the technical field of feed pumps, in particular to a boiler feed pump with a start-stop device, which aims at solving the problem of maintenance and comprises a base. A mounting hole is formed in the outer surface of the base; a sliding groove is formed in the upper surface of the base. A threaded rod is rotationally mounted on the inner surface of the base; guide rods are fixedly connected to the two sides of the inner surface of the base; a first motor is fixedly connected to the outer surface of one side of the base. A sliding block is installed on the inner surface of the sliding groove in a sliding mode. A guide thread groove is formed in the outer surface of the sliding block; sliding holes are formed in the two sides of the outer surface of the sliding block. And through the arrangement of the base and the sliding block, the water pump body can be moved under the condition that the base is not detached, the water pump body is more convenient to maintain, and the efficiency is improved.

The utility model provides a header system boiler feed pump device, which relates to the technical field of power plant water supply devices, and comprises a plurality of water supply pipelines of feed pumps connected in parallel to a header pipe, the header pipe is connected with corresponding economizer assemblies through a plurality of branch pipes, and outlets of the economizer assemblies are connected with a steam pocket; a steam pocket pressure sensor is arranged at the top of the steam pocket; a water supply mother pipe pressure sensor is arranged on the mother pipe; the steam pocket pressure sensor and the water mother pipe pressure sensor are connected with the input end of the control assembly, and the output end of the control assembly is connected with the frequency converter. The technical problems that in the prior art, due to the fact that water feeding pumps are mutually independent, a water feeding adjusting door acts frequently, and energy is consumed are solved, frequent action of a valve is avoided, and throttling loss of the valve is reduced; the technical effects that multi-pump cooperative operation is achieved, and the main pipe pressure is stable when the water level of each steam pocket is independently adjusted are ensured.

A pre-pump structure for a large boiler feed water pump group belongs to the technical field of pre-pumps. The present invention includes a pump shaft and a pump body sleeved on the outside of the pump shaft, and is characterized in that the pump body is divided into a first sub-pump body and a second sub-pump body in the horizontal radial direction and fastened together, and the two sides of the pump body are respectively connected with a first pump cover and a second pump cover of the same structure, and the first pump cover and the second pump cover are respectively inserted into the two ends of the pump shaft, and the outside of the first pump cover is connected to a drive end bearing component, and the pump shaft passes through the bearing end bearing component and cooperates with the drive end bearing component, and the outside of the second pump cover is connected to a non-drive end bearing component, and the pump shaft extends into the non-drive end bearing component and cooperates with the non-drive end bearing component. The present invention can be interchangeable with existing pre-pumps that are widely used in power plants, and can solve the problems of high bearing temperature and impeller "gnawing on the shaft".

The utility model relates to an arrangement system for large and medium-sized dry quenching waste heat utilization, which is characterized in that a dry quenching furnace, a primary dust remover, a dry quenching waste heat boiler, a connecting flue, a secondary dust remover, a circulating fan and a water supply preheater are annularly arranged, the dry quenching waste heat boiler and a boiler water supply pump station system are arranged in a combined manner, the outlet of the dry quenching waste heat boiler is raised, and the outlet of the secondary dust remover is raised. A boiler water supply pump station system is arranged between the bottom of an outlet of the improved coke dry quenching waste heat boiler and the ground, a desalting water tank is arranged on the ground beside the boiler water supply pump station system, sampling equipment is arranged beside the outlet of the coke dry quenching waste heat boiler, and a deaerator is arranged beside the lower portion of the coke dry quenching waste heat boiler. The dry quenching waste heat boiler waste heat recycling system has the advantages that the occupied area of a boiler water supply pump station system and the building structure cost can be saved, the dry quenching waste heat boiler waste heat recycling structure is more compact, the occupied area is small, the building workload is saved, and the building cost is reduced.

This utility model belongs to the field of boiler feedwater pumps, and in particular, a heat-insulated boiler feedwater pump motor. It includes a feedwater pump housing for supplying water to a heat-insulated boiler, a motor, and a fixing mechanism. An impeller shaft is rotatably connected inside the feedwater pump housing. The output end of the motor is connected to one end of the impeller shaft through the fixing mechanism. The fixing mechanism includes rectangular blocks, a connecting rod, U-shaped locking blocks, a limiting block, and a limiting rod. Rectangular blocks are fixedly connected to both the output end of the motor and one end of the impeller shaft. A common connecting rod is inserted into one end of each of the two rectangular blocks. Two U-shaped locking blocks are slidably connected to the connecting rod, and each U-shaped locking block engages with one of the two rectangular blocks. This utility model allows for rapid assembly and disassembly of the motor and impeller shaft through its various components, significantly reducing equipment repair time and improving convenience and efficiency.

The invention discloses a silicon smelting flue gas recycling system and method, and relates to the technical field of waste heat recovery. The silicon smelting flue gas recycling system comprises a waste heat boiler, a flue gas cleaning unit, a heat exchanger, a dust removal fan, a power generation unit, a carbon dioxide trapping unit and a boiler water feeding pump, the silicon submerged arc furnace is connected with the waste heat boiler through a pipeline, the waste heat boiler is connected with the power generation unit and the flue gas cleaning unit through pipelines, the flue gas cleaning unit is connected with the carbon dioxide capturing unit through a pipeline, and a heat exchanger is arranged between the flue gas cleaning unit and the carbon dioxide capturing unit. A dust removal fan is arranged between the heat exchanger and the carbon dioxide capturing unit, the boiler feed pump is connected with the heat exchanger through a pipeline, the heat exchanger is further connected with the waste heat boiler through a pipeline, and the dust removal fan is connected with the power generation unit; the power generation unit comprises a steam turbine, a generator and a transmission control unit, and the steam turbine, the generator and the dust removal fan are coaxially arranged through the transmission control unit.

The utility model relates to a tannery sludge thermotechnical co-production direct incineration treatment system which comprises an incinerator, a feeding machine is arranged on the side wall of the incinerator and conveys tannery sludge with the water content of 45%-65% into the incinerator, the incinerator is sequentially connected with a high-temperature dust remover, a high-temperature air preheater, a waste heat boiler and a low-temperature air preheater, and the low-temperature air preheater is connected with the high-temperature dust remover. The low-temperature air preheater is connected with the induced draft fan through the multi-stage flue gas treatment system; the input end of the boiler feed pump is sequentially connected with the deaerator water tank and the steam turbine through pipelines, the output end of the boiler feed pump is connected with the waste heat boiler drum, the waste heat boiler drum is connected with the steam turbine through a pipeline, and the steam turbine is sequentially connected with the motor and the induced draft fan. The primary fan is connected with a primary air pipeline, the secondary fan is connected with a secondary air pipeline, the primary air pipeline and the secondary air pipeline are respectively and sequentially preheated by the low-temperature air preheater and the high-temperature air preheater, primary air enters the air chamber, and secondary air enters the incinerator. The method has the advantages of reasonable design, energy conservation, environmental protection, good economic benefit and the like.

A boiler blow-off, temperature reduction, noise reduction and white smoke elimination system comprises a water supplementing tank, a boiler water feeding pump and a pipe network, and is characterized in that a coil heat exchange device (2) is arranged in the water supplementing tank (1) so that heat exchange can be conducted between regularly-discharged sewage and normal-temperature water in the water supplementing tank, soft water or desalted water with a certain pressure is contained in the pipe network, and the boiler water feeding pump (3) pressurizes water in the water supplementing tank (1) and supplies heat to the water supplementing tank (1). And a sleeve type heat exchange device (5) is arranged on a steam discharge pipe (8) led to the periodic blowdown flash tank (4), so that the phenomenon that the steam discharge pipe (8) of the periodic blowdown flash tank (4) emits white smoke is reduced or eliminated, meanwhile, boiler feed water is preheated, and the temperature of the boiler feed water is increased. The boiler blow-off, temperature reduction, noise reduction and white smoke elimination system has the advantages that waste heat of blow-off water is fully utilized, the boiler feed water temperature is increased, the heat efficiency of the boiler can be indirectly improved, the temperature and flow of flash steam are reduced, the water content in the steam is effectively reduced, and energy is saved. Therefore, the phenomenon that the steam is diffused and emits white smoke is reduced, and the noise is reduced by utilizing the small-hole noise reduction principle.

A heat network circulating water system and a regulation method for a cogeneration unit. The heat network circulating water system includes a feed water pump steam turbine and a boiler feed water pump and a heat network circulating water pump arranged coaxially. The boiler feed water pump is connected in the boiler water supply pipeline, and the heat network circulating water pump is connected in the heat network circulating water supply pipeline; the boiler feed water pump and the heat network circulating water pump are jointly driven by the feed water pump steam turbine to simultaneously realize boiler water supply and heat network circulating water supply. The regulation method includes that when the outlet flow rate of the heat network circulating water pump is less than the total flow rate of the heat network circulating water, start the standby heat network circulating water pump, open the outlet valve of the standby heat network circulating water pump, and by adjusting the scoop tube opening of the hydraulic coupling, make the sum of the outlet flow rate of the heat network circulating water pump and the outlet flow rate of the standby heat network circulating water pump meet the requirement of the total flow rate of the heat network circulating water. The invention reduces the equipment investment cost and the infrastructure investment of the heat network primary station.

The utility model relates to the technical field of power pumps, in particular to an efficient and energy-saving boiler feed pump which comprises a supporting base, one side of the top of the supporting base is connected with a generator through a mounting seat, the output end of the generator is connected with a coupler, one side of the top of the supporting base is connected with a pump body through a bearing frame, and the pump body is connected with a water pump. The end of the coupler is fixedly connected with a pump shaft, and the end of the pump shaft extends into the pump body and is fixedly connected with an impeller. When the boiler feed pump operates, after water flow is accelerated by the impeller, vortex is formed under the guidance of the turbine blades by arranging the turbine blades, the micro turbine is driven to operate, and the generator is driven to convert originally lost vortex energy into electric energy. The electric energy can be directly supplied to pump body auxiliary equipment, dependence of the pump body on external energy is greatly reduced, energy consumption of the whole boiler feed pump is reduced, and efficient energy conservation and emission reduction of the boiler feed pump are achieved.

The utility model provides an oil well heating system. The oil well heating system comprises a steam boiler, a mixer and a hot water injection device which are sequentially connected in series. The steam boiler is connected with the softened water tank through a boiler feed pump; the steam boiler is further connected with an air blower and a fuel supply box. The mixer is also connected with a well bottom produced liquid storage device through a liquid transfer pump; a Y-shaped filter is further arranged between the liquid transfer pump and the well bottom produced liquid storage device; the hot water injection device is arranged in the oil well. According to the system, the oil well is heated by using the device, the defects that the steam consumption is large and the energy consumption is high due to the fact that steam is easy to escape in a steam heating mode are overcome, and the beneficial effects of being high in temperature rising speed and uniform in heating are further achieved due to the fact that hot water is adopted for heating due to the characteristic of liquidity of liquid.

The invention belongs to the technical field of boiler steam-water circulation systems, and discloses an oil fume collecting system and a high-pressure water feeding pump set. The oil smoke collecting system is applied to a boiler water feeding pump set, the boiler water feeding pump set comprises a high-voltage motor and a water feeding pump which are arranged in an equipment room and are in transmission connection through a hydraulic coupler, and the oil smoke collecting system comprises a first communicating pipeline, a second communicating pipeline, a discharging pipeline and a spraying piece. Compared with a traditional natural smoke exhaust mode, the lampblack collection system provided by the invention realizes active smoke exhaust by utilizing negative pressure formed by hot air flow velocity difference. By constructing the directional airflow channel and the pressure difference, the lampblack emission efficiency can be effectively improved, lampblack is prevented from being accumulated in the equipment room, then pollution of lampblack to the environment of the equipment room is reduced, and the aging risk caused by the fact that lampblack adheres to the surface of the equipment is reduced.

The utility model relates to a novel steam-electricity combined dragging device, and belongs to application of steam turbine dragging transmission equipment. The device comprises a steam turbine, a feed pump, a motor, a first coupler and a second coupler, the feed pump adopts a lengthened pump shaft, the motor is connected with the feed pump through the first coupler, and the feed pump is connected with the steam turbine through the second coupler. The whole structural design is reasonable, the operation safety of the boiler feed pump can be greatly improved through transformation, the risk is reduced, meanwhile, the flow of an original gas-making low-pressure steam pipe network is automatically compensated, operation is simplified, the steam utilization rate is increased, and the use requirement is met.

The utility model belongs to a kind of desalted water system using synthetic ammonia system low-grade waste heat;Including gasification black water feed pipe in synthetic ammonia system, shift gas pipeline;Desalted water pipeline is connected with first stream separator, and the first outlet of first stream separator is connected with deaerator inlet through the first heat exchange passage of first heat exchanger, and the second outlet of first stream separator is connected with deaerator inlet through the first heat exchange passage of second heat exchanger, and deaerator first outlet is connected with first boiler feed water pump, and deaerator second outlet is connected with the first heat exchange passage of third heat exchanger through first desalted water closed cycle part;Shift gas pipeline is connected with circulating water cooler inlet through the second heat exchange passage of third heat exchanger and the second heat exchange passage of second heat exchanger, and the outlet of circulating water cooler is connected with ammonia washing tower;With process design reasonable, can effectively reduce the use amount of circulating cooling water, simultaneously realize the characteristics of full use of heat energy.

The present invention relates to the technical field of boilers, and specifically discloses a boiler device and an operating method. The boiler device includes a medium supply module, a medium conveying module and a medium processing module connected end to end. The medium conveying module includes a mixed filter forming a filter chamber, a pressure-raising medium supply unit selectively connected to the bottom of the filter chamber, a pump body assembly connected to the top of the filter chamber, and a buffer tank forming a buffer chamber; the filter chamber is filled with liquid, and the medium supply module is connected to the bottom of the filter chamber; the pump body assembly can convey liquid to the medium processing module, including a first feed water pump and a second feed water pump connected in parallel; the buffer chamber is filled with liquid and has the same volume as the two feed water pumps, and the downstream of the two feed water pumps are selectively connected to the top of the buffer chamber respectively, and the liquid in the pump body assembly flows toward the buffer chamber. The structural improvement of the boiler device can realize the regulation of the inlet pressure of the pump in use and the temperature in the standby pump, reducing the risk of damage to the boiler feed water pump.

The invention discloses a novel no-load running check valve and a using method, belongs to the technical field of boiler feed pump self-circulation, and aims to solve the problems of a traditional no-load running check valve. The check valve comprises a first valve body which is in a four-way shape, a lower opening of the first valve body is a main path inlet, an upper opening of the first valve body is a main path outlet, a left opening of the first valve body is an inlet side bypass, a right opening of the first valve body is an outlet side bypass, a throttling sleeve is connected with the inlet side bypass in a sealed mode, and a main valve element rod and the throttling sleeve are matched with a plurality of sealing convex rings through a plurality of bypass sealing flanges. The main path valve clack assembly is in sliding fit with the throttling sleeve and is in sliding sealing with the main valve element rod, the crank seat is in sealing fit with the outlet side bypass, a plurality of crank bodies are hinged to the crank seat, the second spring pushes the main path valve clack assembly leftwards through the crank bodies, and the throttling assembly is arranged in the outlet side bypass. The use function of the valve is increased, and the bypass on the outlet side can be used as a preheating pipeline or a backflow pipeline.