13results about "Boiler water tubes" patented technology

The application relates to a boiler container, which comprises a container with a containing cavity, a plurality of openings in communication with the containing cavity, an inner wall of the container provided with a reflecting layer, and an outer wall of the container provided with a heat insulation layer; a plurality of boilers, at least one of which is arranged in the opening, and any two adjacent boilers are communicated through at least one heat transfer pipe, the heat transfer pipe is arranged in the containing cavity, and the reflecting layer is used for reflecting heat radiated outward by the heat transfer pipe to the heat transfer pipe. As known from the above, the boiler container in the embodiment can reduce the heat dissipation of the heat transfer pipe, reduce the heat energy loss of the boiler container, increase the number of the heat transfer pipes, and guarantee the energy conversion efficiency of the boiler container.

A bottom seal for a boiler is provided that includes a first refractory layer, a second refractory layer, a plurality of anchors, and an alloy plate. The first refractory layer is made of a castable refractory material. The second refractory layer is positioned below the first refractory layer. The anchors are configured to support the first and second refractory layers. The alloy plate is configured to be positioned below and support the first and second refractory layers. The first and second refractory layers are configured to seal a bottom opening of the boiler.

The application discloses a kind of early warning method, device, equipment and storage medium of heated surface tube screen state, by dividing into multiple tube screen nodes, obtain the multiple inner wall temperature information corresponding to the multiple tube screen nodes and the data information of control system, and then calculate the multiple outer wall temperature information corresponding to the multiple tube screen nodes;According to the multiple outer wall temperature information and the data information of control system, calculate the multiple oxide skin generation thickness corresponding to the multiple tube screen nodes;According to the multiple oxide skin generation thickness, preset first critical thickness value and preset second critical thickness value, obtain the multiple oxide skin accumulation thickness corresponding to the multiple tube screen nodes;When any one of the multiple oxide skin accumulation thickness reaches preset accumulation thickness value, generate the early warning information corresponding to the preset accumulation thickness value.The application can monitor the state of high-temperature heated surface tube screen in real time, effectively reduce the occurrence of tube screen explosion leakage accident.

Simply and accurately align and install multiple fire-resistant tiles in their designated positions. [Solution] The process includes: a first step of using one fire-resistant tile 2 as a reference tile 2-1 and hooking it onto a reference hook 5-1 without applying fire-resistant grout; a second step of aligning and fixing one fire-resistant tile 2-2 different from the reference tile 2-1 with the reference tile; a third step of performing either a first branching step after the second step, in which the reference tile 2-1 is removed from the reference hook 5-1 and fixed in alignment with the fire-resistant tile 2-2 fixed in the second step, or a second branching step in which one fire-resistant tile 2-3 different from the fire-resistant tile 2-2 fixed in all the preceding steps of this process is hooked onto an unused hook 5-3 one position away from the hook on which the fixed fire-resistant tile 2-2 was hooked, and fixed while aligning it with the fixed fire-resistant tile 2-2; and a fourth step of repeating the third step a predetermined number of times after the third step.

This utility model relates to the field of circulating fluidized bed boiler technology and discloses a limiting device for a π-shaped bend in the heating surface of a circulating fluidized bed boiler. The device includes a limiting frame, with a π-shaped tube rotatably connected inside the limiting frame. Multiple wear-resistant tiles are fixedly connected to the outside of the π-shaped tube. A limiting block is installed on one of the bottom wear-resistant tiles, and a fixing block is installed on the outside of the other bottom wear-resistant tile. A fixing component is provided inside the fixing block, including a locking body. A sliding column is slidably connected inside the locking body, and a spring is sleeved on the outside of the sliding column. A connecting block is fixedly connected inside the sliding column. In this utility model, the arc-shaped limiting block can restrict the displacement of the π-shaped bend and the swing of the limiting device itself, avoiding friction with the pipe, preventing limiting failure and pipe thinning, and greatly reducing the occurrence of π-shaped bend leakage accidents.

The application discloses a waste heat recovery boiler and a recovery method, and belongs to the technical field of waste gas treatment. The device comprises a boiler body. The main body of the boiler body is in a vertically arranged cylindrical structure. A first smoke inlet and a first smoke outlet are respectively arranged at the lower end and the upper end of the boiler body. A heat exchange cylinder is coaxially arranged at the inner side of the boiler body. A second smoke inlet and a second smoke outlet are respectively arranged at the lower end and the upper end of the heat exchange cylinder. A water pipe is coaxially arranged at the center of the heat exchange cylinder. An inlet water pipe and an outlet water pipe are respectively connected to the lower end and the upper end of the water pipe. A spiral large blade is arranged at the outer side of the lower part of the water pipe. A rotating cylinder is rotatably arranged at the upper part of the water pipe in the heat exchange cylinder. A spiral small blade is arranged on the inner wall of the rotating cylinder. A partition block is arranged at the inner side of the water pipe. A water outlet and a water inlet are arranged at the outer side of the rotating cylinder. The method can improve the utilization efficiency of the waste heat of flue gas.

The objective is to provide a boiler that can efficiently recover heat from exhaust gas without reducing boiler efficiency, even when the heat transfer area is small. [Solution] A boiler comprising a group of water tubes arranged in a ring around a combustion space, allowing combustion gas to flow out of the ring through the gaps between adjacent water tubes; a guide section that guides the combustion gas flowing out of the ring along the water tubes; and an outer wall that surrounds the guide section, collecting the combustion gas flowing out of the guide section and guiding it to a discharge duct. At least one water tube is provided with a vertical fin extending from its side so as to create a gap of a predetermined interval on the outer side of the ring of the water tube adjacent to that water tube, and the guide section guides the combustion gas flowing out from the predetermined gap between the water tube and the vertical fin along the water tube.

The present disclosure relates to a hydrogen detonation heat engine, a power device and a method for preparing water vapor and generating mechanical energy, the hydrogen detonation heat engine comprising: a detonation chamber and a water vapor generation chamber; the heat exchange coupling structure between the detonation chamber and the water vapor generation chamber has direct heat conduction, the heat generated by the detonation reaction in the detonation chamber is conducted through the heat exchange coupling structure to heat the water in the water vapor generation chamber into water vapor. The present disclosure adopts the heat exchange coupling structure with direct heat conduction between the detonation chamber and the water vapor generation chamber, fully utilizes the heat generated by hydrogen detonation to heat water to generate water vapor, can be compatible with both pulse detonation and rotary detonation, can focus on industrial water vapor preparation, has high heat exchange efficiency and stable water vapor parameters.

This steam generator comprises: a case through which a nuclear reactor coolant flows; a heat transfer tube including a plurality of heat transfer tube passages through which feedwater moves; a feedwater header connected to the heat transfer tube and for supplying the feedwater; a steam header in which the feedwater supplied from the feedwater header is phase-changed into main steam and from which the main steam is discharged; an orifice disposed inside the feedwater header and including a plurality of orifice passages in communication with the heat transfer tube passages; and a driving means moving a position of the orifice relative to the heat transfer tube in order to adjust a pressure loss of the feedwater flowing into the heat transfer tube, wherein the driving means includes a bellows tube that expands or contracts so that the orifice moves, and a compressible fluid filled inside the bellows tube to cause expansion or contraction of the bellows tube.

The invention discloses a normal-pressure steam boiler utilizing waste heat of high-temperature waste gas. The boiler comprises a boiler shell, a plurality of sections of temperature rising structures connected in series, a heat conduction water conveying pipe set and a steam generator. A normal-temperature water inlet pipe is arranged at the top of the front side wall of the boiler shell, and a steam outlet is formed in the top of the boiler shell; at least two sections of heating structures connected in series are sequentially arranged in the boiler shell in the direction opposite to the flowing direction of waste gas, each section of heating structure fixes a plurality of vertically-arranged heat conduction water conveying pipe sets through a front vertical plate and a rear vertical plate, cascade heat exchange water ways connected in series and opposite to the high-temperature waste gas are formed in the pipes, and the tail section of heating structure is in butt joint with a steam generator to achieve normal-pressure steam output. Therefore, efficient resource utilization of the waste heat of the waste gas is achieved, the waste heat recovery efficiency can be greatly improved, the industrial defects that a traditional waste heat boiler pipeline is prone to blockage, high-temperature gasification impact cracks, the operation stability is poor and the operation and maintenance cost is high are fundamentally overcome, and the waste heat boiler is suitable for various industrial high-temperature waste gas waste heat recovery steam generation scenes.

The application discloses a hydrogen explosion heat engine and a hydrogen explosion engine. The hydrogen explosion heat engine comprises a water vapor generating device and at least one explosion device arranged in the water vapor generating device. The explosion device generates heat to heat water in the water vapor generating device into water vapor and discharge the water vapor. The hydrogen explosion heat engine can fully utilize the heat generated by hydrogen explosion to heat water in the water vapor generating device to generate water vapor, and can provide continuous industrial-grade water vapor for industrial parks and enterprises. The heat exchange efficiency of the hydrogen explosion heat engine is greatly improved compared with traditional hydrogen boilers, and the hydrogen explosion heat engine has very high use safety compared with the traditional hydrogen boilers. Moreover, the hydrogen explosion heat engine uses hydrogen as fuel, and the combustion product is only water, and no carbon is discharged, so that the hydrogen explosion heat engine meets environmental protection requirements.

The present application relates to the technical field of steam equipment, and discloses a steam heat source machine and a steam production method thereof, which comprise an organism, a combustion chamber, a combustion device, a heat exchange pipe, a smoke box and an oil supply module, the top of the combustion chamber is provided with an upper header communicating with the heat exchange pipe, the bottom of the combustion chamber is provided with a lower header communicating with the heat exchange pipe, the upper end of the upper header is provided with a gas outlet pipe seat, the lower header is connected with a water supply module, the top of the combustion chamber and the inner side of the upper header are provided with an upper cover, the bottom of the upper cover is provided with a smoke blocking layer, the side wall of the combustion chamber is provided with a smoke outlet, the combustion chamber is provided with a smoke blocking tile surrounding the heat exchange pipe, the smoke blocking tile is provided with a smoke outlet hole, and the smoke blocking tile and the side wall of the combustion chamber are spaced apart, and the outer side wall of the heat exchange pipe is provided with helical fins distributed in the circumferential direction. In this way, the flue gas is guided to spiral along the helical fins and spiral around the outer side wall of the heat exchange pipe, so that the contact time and the heat exchange path of the flue gas and the heat exchange pipe are prolonged, and the heat exchange efficiency is improved.

The invention discloses an integrated fused salt steam generator suitable for flexible operation of a coal-fired unit. Comprising a feed water inlet, a steam outlet, a fused salt inlet, a fused salt outlet, a shell, a preheating section baffle, a porous connecting pipe plate, a steam storage chamber baffle, a porous connecting pipe plate, an electric control valve, an overheating section baffle, a fused salt pipeline, a fused salt pipeline valve, a straight pipe, a preheating section, an evaporation section, a steam storage chamber, an overheating section, a spiral pipe and a fused salt branch inlet. The heat exchanger has the advantages that the preheating section, the evaporation section and the overheating section are integrated in the heat exchanger, the occupied space of equipment is reduced, and rapid load response is achieved; the fused salt branch can adjust the temperature of a fused salt outlet and prevent the fused salt temperature from deviating from a set value; reverse flowing and alternate reversing of cold and hot fluid are combined, the water supply vaporization space is enlarged, and the flow instability phenomena such as density wave oscillation are restrained; a steam storage chamber is arranged between the evaporation section and the overheating section, the steam yield can be rapidly changed by adjusting pressure through a valve, and the requirement for flexible operation of a coal-fired unit is met.