1077results about "Casings/linings" patented technology

The invention relates to the technical field of control and regulation systems, in particular to a hearth auxiliary regulation control system which comprises a data processing module, an analysis module, a control module, a regulation and control module, an optimization module and a safety early warning module. The data processing module collects temperature data of a hearth combustor area, a water cooling wall and a tail flue in real time through a distributed temperature sensor network, and a dynamic combustion field three-dimensional model is generated through Kalman filtering denoising, redundancy cross validation and a temperature compensation algorithm in combination with combustor flame position signals and an air door opening state. And the optimization module updates the strategy weight based on the combustion efficiency improvement rate, and reinforces learning to extend the adaptive boundary of the strategy library. And the safety early warning module calculates the matching coefficient of the pipe wall temperature and the allowable stress in real time, triggers a grading intervention strategy to reduce the overtemperature risk, forms full-process closed-loop control, and improves the thermal efficiency and the operation safety of the boiler.

The invention relates to the technical field of mechanical stress and thermal deformation monitoring, in particular to a combustion fine adjustment method based on full-hearth expansion monitoring, which is characterized in that expansion sensor arrays are arranged on each layer of a main burner area of a boiler hearth, and vibration monitoring units are arranged in a layered manner from a main burner to an SOFA air area synchronously; normal deformation, three-dimensional expansion displacement data and vibration spectrum data of the four furnace walls are collected; generating a standardized monitoring data set through wavelet noise reduction and temperature compensation processing, fusing boiler operation parameters, and inputting the boiler operation parameters into the reinforcement learning model to generate a combustor adjustment instruction; water-cooled wall expansion rate change data is collected in real time to optimize model weight and update a control strategy, and a closed-loop feedback mechanism is formed. According to the method, through multi-source sensing data fusion and dynamic modeling, sub-meter analysis of thermal load distribution and quick response of the combustion state are achieved, the boiler operation efficiency is improved, and the service life of equipment is prolonged.

A combustor component is disclosed comprising a combustion chamber, which comprises an oxidant inlet configured to receive a gas flow of an oxidant, a fuel inlet configured to receive a gas flow of a fuel into the combustion chamber, and a gases outlet configured to allow passage of a flow of exhaust gases from the combustion chamber. The combustor component is configured to facilitate separation of the gas flows of the oxidant and the fuel entering the combustion chamber prior to combustion of the fuel with the oxidant. A combustor assembly comprising a plurality of combustor components for staged combustion of a fuel with an oxidant, and related systems and methods for control and use of the combustor assembly, including in calcination processes, are also disclosed. A pyrolysis component, a pyrolysis assembly comprising a plurality of pyrolysis components, and related systems and methods using the pyrolysis component are also disclosed.

The invention discloses a water-cooled wall soot blowing optimization method for preventing high-temperature corrosion based on a GA-BP neural network. The method comprises the following steps: 1, preprocessing operation data based on a weighted moving window; 2, selecting input and output parameters of the neural network; 3, setting GA-BP neural network parameters; 4, training a GA-BP neural network of the heat transfer capacity when the water cooling wall is theoretically cleaned and the actual heat transfer capacity of the water cooling wall; 5, superposition fitting is conducted on the heat loss change curve of the water cooling wall in the boiler operation process; 6, the soot blowing optimization model is solved based on the maximum unit time soot blowing net income, and the optimal soot blowing opportunity and the optimal soot blowing duration are obtained; and 7, dynamically adjusting the soot blowing opportunity and the soot blowing time according to the soot blowing strategy. The method can accurately monitor the heat loss change condition of the water cooling wall, and is suitable for practical engineering application.

The invention provides a water-cooled wall safety monitoring method and a combustion adjustment control method based on distributed optical fiber sensing, and the method specifically comprises the following steps: arranging a Bragg grating on a water-cooled wall, and obtaining the Bragg wavelength offset; predicting a temperature value and a strain value at the current moment according to historical temperature and strain data by using a state equation of stress and temperature; the Bragg wavelength prediction offset is obtained by combining the temperature value and the strain value at the current moment with the sensor error; obtaining a wavelength change residual error according to the Bragg wavelength offset and the Bragg wavelength prediction offset, and correcting the temperature value and the strain value at the current moment by using the wavelength change residual error to obtain a real temperature value and a real strain value at the current moment; a real strain value at the current moment is converted into a stress value, a water-cooled wall tearing factor is established by utilizing the stress value, the number of thermal cycles and the fatigue life of a water-cooled wall material, water-cooled wall safety monitoring and combustion adjustment control are realized by utilizing the water-cooled wall tearing factor, and the operation safety of the boiler is improved.

The present invention relates to a hydraulic tool. The present invention comprises a connecting rod, a connecting piece with an internal cavity detachably fixed to both ends of the connecting rod, a sealing component detachably fixed to the connecting piece and having a built-in cavity connected to an external hydraulic device, the sealing component being fixed to the outer end of the connecting piece opposite to the connecting rod, the built-in cavity being connected to the internal cavity, and the internal cavity having at least one water outlet hole connected to the outside of the connecting piece. The present invention solves the technical problem in the prior art that it is difficult to seal the pipe orifice of the connecting pipe when the inner pipe section of the pipe orifice is short and no block is provided on the outer wall of the pipe orifice, and provides a hydraulic tool for the heating surface tube screen of a waste heat boiler. The present invention has the advantages of simple structure, safety, reliability and ease of use.

The present disclosure is directed to a firebox basket for a barbeque grill or smoker. In one form, the present disclosure provides a grill comprising an ash depository, a firebox basket positioned in the grill above the ash depository; and a cooking rack positioned above the firebox basket. The firebox basket comprises: a support basket defining an internal area, the support basket comprising: a plurality of concentrically stacked rungs that define a side wall of the firebox basket; and a grate positioned at a bottom of the plurality of concentrically stacked rungs; and a plurality of ceramic pieces disposed within the support basket. The support basket is configured to support the plurality of ceramic pieces around the internal area of the support basket.

The invention discloses a combustion device for mixed combustion of solid waste of a coal-fired boiler, which belongs to the technical field of coal-fired boilers and comprises a combustion device body, a turbine device is mounted on the surface of the combustion device body, a fixing seat is fixedly connected to the surface of the combustion device body, a first hanging ring is fixedly connected to the other end of the fixing seat, and a fixing plate is welded to the surface of the combustion device body. According to the combustion device, the fixing base is fixedly connected to the surface of the combustion device body, the first hanging ring is fixedly connected to the other end of the fixing base, meanwhile, the fixing plate is welded to the surface of the combustion device body, the sliding groove is formed in the fixing plate, the sliding block is arranged in the sliding groove, and the second hanging ring is welded to the top of the sliding block; the rope penetrates through the first lifting ring and the second lifting ring, the rope is stretched through the first lifting ring and the second lifting ring, then the stress position of the device in the lifting process is enlarged, and at the moment, the device is more stable in the lifting process, and the stability is high in the using process.

The invention discloses a thermal power generating unit boiler wall temperature early warning method and device, and the method comprises the steps: determining a steady-state working condition according to boiler operation parameters; the boiler operation parameters comprise coal feeding quantity, water feeding quantity, primary air quantity and secondary air quantity; calculating the wall temperature change rate of each monitoring point in a preset time window; the time window is set according to a data smooth filtering requirement and an early warning response timeliness requirement, and the monitoring points comprise a superheater, a reheater and a water cooling wall; and if the wall temperature change rate of at least one monitoring point is greater than or equal to a preset early warning threshold value and the duration is greater than or equal to a corresponding time threshold value, executing a corresponding early warning strategy. Whether the boiler is in the steady-state operation state or not is recognized before early warning is triggered, so that wall temperature fluctuation interference in the normal dynamic process such as unit load adjustment and combustion working condition fine adjustment is eliminated, it is avoided that the normal working condition is misjudged to be abnormal, the early warning timeliness of the wall temperature of the boiler is improved, meanwhile, the misjudgment rate is reduced, and the early warning accuracy is improved.

The present invention relates to an equipment and the relative process for performing thermal treatment at high temperature of combustible solid materials combined with inertization of ashes obtained therefrom. In particular, said equipment allows a particularly efficient and safe treatment of industrial and municipal combustible solid waste of various nature, also any dangerous ones.

The invention relates to the technical field of boiler air distribution. The invention provides a boiler air distribution system and method, and the system comprises combustors which are arranged in multiple layers, and each layer is provided with a plurality of combustors; a plurality of layers of temperature measuring modules are arranged, and each layer is provided with a plurality of temperature measuring modules; each burner is connected with a pulverized coal pipe, and the flow modules are arranged on the pulverized coal pipes; and each pulverized coal pipe is provided with one adjusting module, and the adjusting modules are used for adjusting the pulverized coal flow of the combustor. The temperature in the boiler hearth is obtained through the temperature measuring module, whether flame deflects or not is judged according to the temperature, the pulverized coal flow of each combustor is obtained through the flow module, the pulverized coal flow of the combustors is adjusted through the adjusting module to treat flame deflection, flame wall painting, high-temperature corrosion or unstable combustion and other conditions are avoided, and the service life of the boiler is prolonged. The boiler combustion efficiency is improved, and combustion deterioration and fire extinguishment are avoided.

The invention discloses a strong premixing combustion chamber for restraining combustion noise based on a Helmholtz resonant cavity, and relates to the technical field of energy and power. Air and fuel enter the mixing cavity through corresponding connectors to be strongly premixed, premixed gas enters the hearth to be combusted through slit channels among water cooling channel branch pipes, a water cooling channel array can prevent backfire, the Helmholtz resonant cavity is connected with the hearth through a cavity neck and is provided with an air film cooling channel, the size of the Helmholtz resonant cavity needs to measure combustion noise, and a frequency spectrum is analyzed to obtain characteristic frequency. The neck length, the cross section area and the resonant cavity volume are calculated according to a Helmholtz resonance formula, and the sound absorption effect is verified in combination with a low-order thermoacoustic model. Combustion efficiency is improved through the strong premixing and slit water cooling design, tempering is prevented, NOx is reduced, the diffusion combustion problem is solved, the targeted design resonant cavity is matched with air film cooling, the defects that an existing silencing structure is large in size, poor in adaptation and low in high-temperature reliability are overcome, complex active control is not needed, cost is low, applicability is high, and the application range is wide. And cooperative control of high efficiency, low emission and unstable combustion is realized.

A combustor of a gas turbine according to one aspect of the present disclosure includes: an outside wall surrounding a combustion chamber; a liner located inside the outside wall and facing the combustion chamber; a spacer at least part of which is located between the outside wall and the liner; a fastener at least part of which is located outside the outside wall; and a fixture by which the liner is attached to the outside wall and which includes a head supporting the liner and a shaft portion penetrating the outside wall and fastened to the fastener. The fastener includes a fastener groove extending along the fixture, a first air passage being located at the fastener groove. The spacer includes a spacer groove extending along the fixture, a second air passage through which air having flowed through the first air passage flows being located at the spacer groove.

The invention relates to a system for improving the mass flow rate of an upper hearth, and aims to solve the problems of water-cooled wall header pipe joint tension fracture, water-cooled wall fin tension fracture and over-temperature pipe explosion of different degrees during deep peak regulation and rapid load change of an existing boiler in-service unit, in particular to a system for improving the mass flow rate of an upper hearth, in order to solve the problems of water-cooled wall header pipe joint tension fracture, water-cooled wall fin tension fracture and pipe over-temperature pipe explosion of the existing boiler in-service unit. A water supply pipeline is communicated with a coal economizer coiled pipe heating surface, the coal economizer coiled pipe heating surface is communicated with a water cooling wall inlet header, the water cooling wall inlet header is communicated with a water cooling wall middle header, and the outlet end of the water cooling wall middle header is communicated with the inlet end of a water cooling wall upper header through an upper hearth vertical water cooling wall. The outlet end of the water-cooled wall upper header is communicated with the inlet end of the steam-water separator, the outlet end of the steam-water separator is communicated with the inlet end of the water storage tank, the outlet end of the water storage tank is communicated with the inlet end of the boiler water starting circulating pump, and the outlet end of the boiler water starting circulating pump is communicated with the inlet end of the water-cooled wall middle header through a circulating pump outlet pipeline and a second recirculation pipe. The invention is applied to the field of boilers.

Disclosed is a hydro furnace (100, 200) comprising: combustion chamber (102, 202) comprising first flue gas outlet (110, 212) and second flue gas outlet (112, 214); inner flue gas pipe (104, 204) having first end (114, 222) and second end (116, 224), first end being connected to first flue gas outlet, inner flue gas pipe further comprising multiple pipes (118a, 118b, 118c, 118d, 118e, 118f, 226), each of multiple pipes comprising third end (120, 228) and fourth end (122, 230), and being arranged to cross through inner flue gas pipe; liquid jacket (106, 234) surrounding at least partially combustion chamber and inner flue gas pipe, liquid jacket comprising liquid inlet (124, 220) and liquid outlet (126, 240), wherein third and fourth ends of multiple pipes are connected to liquid jacket; and bypass flue gas pipe (108) having fifth end (128) connected to second flue gas outlet and sixth end (130).

The invention relates to the technical field of boilers, in particular to a composite water-cooled wall for a biomass boiler and a manufacturing method thereof, the composite water-cooled wall comprises a water-cooled wall main body, and is characterized in that the water-cooled wall main body is formed by combining an upper water-cooled section, a middle water-cooled section and a lower water-cooled section; each of the upper water-cooling section, the middle water-cooling section and the lower water-cooling section comprises a light pipe, a sealing plate, a heat-resistant scratch nail, a nano-porous refractory castable, a reinforcing rib plate and a phase-change heat-insulating layer, and the light pipes, the heat-resistant scratch nails and the nano-porous refractory castable are combined to form a water-cooling wall component; the stability of the wall surface structure can be improved by pouring the refractory castable in the membrane wall, and wall surface cracks or other mechanical damages caused by temperature change due to instability of biomass fuel moisture are prevented; the nano-porous refractory castable has good heat conduction performance on the basis of good heat preservation performance, and heat generated in the boiler can be effectively transferred.

The invention relates to the technical field of metallurgical equipment, and discloses a horizontal waste heat boiler and an anti-slagging optimization method and system.The system comprises an uptake flue, a radiation chamber, a convection chamber, an ash hopper, a baffle, a heat exchange tube panel, a sieve pore baffle and a streamline baffle; the method comprises the steps that a horizontal waste heat boiler numerical simulation model is built, and a baffle, a heat exchange tube panel and other components are subjected to model building according to the equal proportion of 1: 1; grid division is carried out on the built horizontal waste heat boiler numerical simulation model, and local flow characteristics and temperature distribution are captured; a multiphase mass point grid method is used, gas phase motion is described by adopting a volume average Navier-Stokes equation under an Euler framework, and particle motion is tracked by adopting a Newton second law under a Lagrange framework; and selecting a value simulation model and a value simulation method suitable for the gas-solid two-phase flow and heat exchange process of the waste heat boiler. The heat exchange capacity of the waste heat boiler is improved; the recovery rate of smoke particles is increased; and slagging of parts in the waste heat boiler is reduced.

The invention relates to an adjustable double-flow water-cooled wall system, a once-through boiler and a generator set, the water-cooled wall system comprises a hearth water-cooled wall, an economizer and a shunting water-cooled wall device, and the shunting water-cooled wall device is provided with a shunting water-cooled wall inlet header and a shunting water-cooled wall outlet header; the shunt water-cooled wall inlet header is connected with a shunt water-cooled wall inlet pipeline, and the shunt water-cooled wall outlet header is connected with a shunt water-cooled wall outlet pipeline; the economizer outlet pipeline comprises a first branch pipeline and a second branch pipeline, the first branch pipeline is connected with the hearth water-cooled wall inlet pipeline, and the second branch pipeline is connected with the shunting water-cooled wall inlet pipeline. The system can greatly improve the hydrodynamic safety of the water cooling wall of the boiler in an ultra-low load interval, meanwhile, the flow resistance of the water cooling wall under full load is not increased, and the operation economical efficiency of the whole unit is not reduced.

The utility model discloses a circulating fluidized bed boiler suitable for high-alkali and high-chlorine coal. The circulating fluidized bed boiler comprises a hearth, a cyclone separator, a steam cooling flue and a tail flue which are connected in sequence, a water cooling screen is arranged in the hearth; the lower end of the cyclone separator is connected with a material returning device, the material returning device is connected with the lower part of the hearth through a first-stage material returning pipe and connected with an external bed through a connecting pipe, a high-temperature superheater is arranged in the external bed, and the external bed is connected with the lower part of the hearth through a second-stage material returning pipe; the steam cooling flue is divided into a steam cooling down flue and a steam cooling up flue through a longitudinal partition wall connected with the top of the steam cooling flue, and a water cooling tube bundle is arranged in the steam cooling up flue; according to the utility model, contamination and corrosion of high-alkali and high-chlorine coal for combustion to a heating surface can be prevented, damage to equipment in the boiler is avoided, and long-period stable operation of the boiler is realized.

The high-parameter garbage incinerator external reheating single-channel waste heat boiler comprises a flue, a steam pocket and a reheater, the flue sequentially comprises a vertical flue body, a horizontal flue body and a bent flue body from the flue gas direction to the outside, a water cooling wall is arranged in the vertical flue body and serves as an evaporation heating surface for generating saturated steam, and the steam pocket is arranged in the horizontal flue body; the steam pocket is arranged above the horizontal flue, connected with the water cooling wall and used for containing saturated steam, the reheater is arranged above the steam pocket and connected to the steam pocket and a steam turbine exhaust pipeline, reheated steam flows through a shell of a pipe bundle in the reheater from a steam turbine exhaust pipe, the saturated steam is conveyed into the pipe bundle of the reheater from the steam pocket, and the saturated steam flows through the steam turbine exhaust pipeline. And the heat is transferred to the reheated steam. By arranging the reheater outside the boiler, the reheater is prevented from making contact with flue gas, the problem that the heating surface of the reheater is corroded by high-temperature flue gas in the boiler can be effectively solved, the heat efficiency of a whole plant unit can be effectively improved, the area of an excessive superheater does not need to be increased, and the investment cost and the occupied area of the boiler are reduced.

The invention provides a hearth negative pressure control system under a boiler coke falling working condition. The hearth negative pressure control system comprises a boiler and a main induced draft fan communicated with the boiler through a flue, and a water cooling wall of the boiler is connected with a vibration measuring device, a hearth negative pressure measuring device and a negative pressure adjusting device; the vibration measuring device comprises expansion recorders installed at the four corners of a water cooling wall of the boiler, each expansion recorder is provided with a vibration measuring point, and the vibration measuring points are used for monitoring the vibration value of the boiler bottom when coke falls off from the inner wall of the boiler. The hearth negative pressure measuring device comprises a pressure transmitter and a pressure switch controller, the pressure transmitter is used for sensing the real-time pressure in the boiler, and when the real-time pressure reaches a negative pressure threshold value, the pressure switch controller is used for turning off the negative pressure adjusting device; the negative pressure adjusting device comprises a main control unit, and the main control unit is used for adaptively adjusting the induced air volume of the main induced draft fan according to the vibration value obtained by the vibration measuring point. The system solves a series of problems that the boiler is unstable in operation and easy to extinguish during power generation of an existing thermal power plant.

The utility model relates to a water-cooled fire grate which is provided with a pivot header, the pivot header is a long and thin pipe fitting and is suitable for penetrating through a water cooling wall of a boiler to be rotatably supported, so that the water-cooled fire grate can rotate around the pivot header to adjust the inclination angle, and a water inlet and a water outlet are respectively formed in the end parts of the two sides of the pivot header. The utility model further relates to a boiler comprising the fire grate, the two ends of the pivot header of the water-cooled fire grate extend to the outer sides of the two side wall water-cooled walls respectively and are rotatably supported by supporting pieces, and the pivot header is provided with a water inlet assembly and a water outlet assembly around the water inlet and the water outlet respectively. According to the water-cooled fire grate, the water-cooled fire grate is provided with the pivot header, so that the water-cooled fire grate can rotate greatly around the pivot header, and a large inclination angle can be adjusted. In addition, due to the fact that a water-cooling structure is used, the temperature of the whole water-cooling fire grate is greatly reduced compared with that of a non-water-cooling structure, adhesion and coking of fuel can be avoided, and parts are prevented from being damaged by high-temperature smoke.

Refractory anchoring devices include a main body and a mounting feature for mounting to a thermal vessel. The main body has the shape of two end-to-end Y's forming a central segment, branch segments extending from ends of the central segment, and extension segments extending from the branch segments, to collectively form four unenclosed cell openings that are semi-hexagonally shaped. Some embodiments include reinforcement segments extending into respective cell openings, voids extending through respective adjacent branch and extension segments, an underbody gap under the central segment, a single stud-welding stud for the mounting feature, and / or a collar-and-stud connection between the anchor main body and a stud-welding stud of the mounting feature. Refractory anchoring systems and methods include an array of the refractory anchoring devices arranged and mounted so that the unenclosed semi-hexagonal cell openings of adjacent anchoring devices cooperatively form substantially hexagonal cells.

The invention discloses a near-wall air device for preventing high-temperature corrosion of a front and back wall hedging pulverized coal boiler, and relates to the technical field of application of near-wall air of pulverized coal boilers. The close-to-wall air device for preventing the high-temperature corrosion of the front and rear wall hedging pulverized coal fired boiler comprises a close-to-wall air nozzle arranged on the side wall of a hearth, the hearth comprises a furnace wall, the side wall of the hearth is provided with a plurality of wall-type arranged over fire air nozzles and wall-type arranged burner nozzles, and the close-to-wall air nozzle is arranged on the side wall of the furnace wall in a penetrating mode. By means of the wall-attached air nozzles, in the using process, according to the requirement for preventing high-temperature corrosion of the boiler in the reducing atmosphere, multiple layers of wall-attached air can be arranged on the wall face of the side wall of the hearth, each layer of wall-attached air comprises the multiple wall-attached air nozzles, and the area, prone to high-temperature corrosion, of the wall face of the boiler can be completely covered; the oxidizing atmosphere of the near-wall area is formed, the risk of high-temperature corrosion of the water cooling wall is effectively avoided, and meanwhile the air volume corresponding to each piece of near-wall air can be adjusted according to actual needs.

The invention relates to the technical field of high-temperature cavities, in particular to a cooling structure for a high-temperature cavity, which comprises a cooling sleeve sleeved outside a combustion cavity. A spiral channel is formed in the inner wall of the cooling sleeve in the circumferential direction of the cooling sleeve, and a spiral cooling channel for cooling water to pass through is formed between the spiral channel and the outer wall of the combustion cavity. The spiral channel is formed in the inner side wall of the cooling sleeve, the cooling sleeve can meet the requirements for uniformity of the cooling effect of the combustion cavity and stability of flowing of cooling water, and the spiral cooling channel is adopted for the cooling structure in consideration that the combustion cavity is cylindrical and large in length diameter ratio. And the flow guide assembly is arranged in the spiral cooling channel, so that cooling water flows in the spiral cooling channel and is closer to the inner wall of the combustion cavity, the heat dissipation efficiency of the cooling system is improved, and the heat exchange efficiency and the uniformity of the cooling effect are greatly improved.

The system and method for preventing high-temperature corrosion of the boiler water-cooled wall provided by the present invention can spray the high-temperature and high-pressure air after the compressor is boosted and the heater is heated toward the water-cooled wall through the air duct, which can effectively penetrate the flue gas in the furnace and form a protective air film with good anti-corrosion effect on the water-cooled wall, and will not form a large degree of cooling in the furnace, thereby achieving the technical effect of improving the atmosphere near the water-cooled wall, preventing the water-cooled wall from high-temperature corrosion, and not affecting the performance of the boiler; the compressed air flow directed to the water-cooled wall can also purge the water-cooled wall to prevent the flame from scouring the water-cooled wall, and remove the accumulated dust and slag on the water-cooled wall; by setting a sensor to detect the concentration of oxygen, carbon monoxide and hydrogen sulfide in the atmosphere attached to the water-cooled wall, and then adjusting the opening of the regulating valve on the pipeline according to the detection value of the sensor through the controller, it is possible to monitor the atmosphere attached to the water-cooled wall online, and to reasonably optimize the amount of compressed air injected in real time, thereby improving the economy.

The invention relates to a straw combustion boiler and a straw combustion heating system. The boiler comprises a combustion chamber and an ash pool, a water fire grate is fixedly arranged between the combustion chamber and the ash pool, a first double-layer plate water-cooled wall is arranged on the outer side of the combustion chamber and on a boiler arch, one end of the water fire grate is communicated with a water return port of the boiler, the other end of the water fire grate is communicated with the first double-layer plate water-cooled wall, a primary air supply pipe is arranged below the water fire grate, and a secondary air supply pipe is arranged on the side wall of the combustion chamber. The heating system comprises a boiler, a water tank, a water supply drum and a water return drum, the water tank is connected with a water inlet of the boiler through a water pipe, a smoke outlet of the boiler is connected with the water supply drum, the water supply drum is connected with a smoke inlet of the water return drum, and the water return drum is connected with a chimney; a water outlet of the boiler is connected with a water inlet of the water supply boiler barrel, a water outlet of the water supply boiler barrel supplies water to users, user return water is connected with the water return boiler barrel through a water return pipe, and the water return boiler barrel is connected with the boiler. The straw combustion efficiency is high, coal can be replaced, and the condition of the same room temperature is achieved.

The utility model discloses a biomass boiler combustion chamber structure, which relates to the technical field of biomass boilers and comprises two partition plates, a plurality of heat conduction pipes fixedly connected between the two partition plates, and a combustion chamber arranged between the two partition plates below the heat conduction pipes. Every two adjacent smooth furnace pipes are fixedly connected through a corrugated furnace pipe, one sides of the two smooth furnace pipes are installed in the corresponding partition plates in a penetrating and inserting mode, spiral flow guide plates are arranged in the corrugated furnace pipes and fixedly installed in the corrugated furnace pipes through installation rods, and heat conduction sleeves are further movably installed on the outer sides of the heat conduction pipes. The two spiral flow guide plates are arranged in the combustion chamber, biomass fuel and flames can be guided, more heat can be conducted into the heat conduction pipes through the smooth furnace pipe and the corrugated furnace pipe, and meanwhile the heat conduction efficiency between the combustion chamber and the multiple heat conduction pipes can be further improved by means of the arrangement of the heat conduction sleeve, the first heat conduction plate and the second heat conduction plate.

The invention relates to the technical field of thermal power plant boiler walls, and discloses a thermal insulation and heat preservation sealing structure for a thermal power plant boiler wall. The heat insulation and preservation mechanism is located in the heat preservation inner shell; and the sealing connection mechanism is located between the two heat preservation inner shells. According to the heat-insulation and heat-preservation sealing structure for the boiler wall of the thermal power plant, concrete is injected into the concrete outer shell so that the heat-preservation inner shell can be conveniently poured and fixed to the ground, the connecting supporting plates can conveniently and movably fix the connecting steel bars into the concrete outer shell through the rotating clamping holes, and the concrete is injected into the two sides of the interior of the concrete outer shell; a synchronous plate is manually driven to linearly move, the synchronous plate is connected with a connecting shaft through a rotating hole, the connecting plate is conveniently controlled to shake left and right, then a connecting steel bar is driven to rotate, the connecting steel bar drives a uniform stirring rod to uniformly stir and defoam concrete, concrete solidification is facilitated, and the connecting steel bar is convenient for improving the connecting strength of the concrete; and the thermal insulation inner shell can be conveniently fixed outside the boiler wall of the thermal power plant.