43results about "Hollow bar grate" patented technology

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.

The utility model discloses a water-heating biomass civil stove provided with a water-cooled anti-slagging fire grate, which relates to the technical field of biomass heating stoves and comprises a stove body, a combustion chamber and a heat exchange chamber are arranged in the stove body, an ash chamber is arranged below the combustion chamber, and the ash chamber is provided with an ash discharge door; heat exchange modules are arranged in the heat exchange chamber, and a flue communicated with the combustion chamber and the smoke exhaust pipe is inserted between the heat exchange modules; a fire grate is installed in the combustion chamber and comprises a primary air channel, a water cooling channel and a fire grate upper plate, an inlet of the primary air channel is communicated with an air blower, and a primary air outlet hole facing the fire grate upper plate is formed in the primary air channel. An inlet of the water-cooling channel communicates with the circulating water inlet, an outlet of the water-cooling channel communicates with the heat exchange module, and circulating water is discharged through the circulating water outlet after being heated by the heat exchange module; the fire grate is cooled in a water cooling mode, the phenomenon of high-temperature slagging is avoided, and cooling water can enter circulating water after being used up for secondary heating and utilization.

The utility model belongs to a fire grate structure of a household garbage incinerator in the technical field of household garbage incinerators. Comprising a fire grate segment (1) and a fire grate segment base frame (2), the fire grate segment (1) is installed on the fire grate segment base frame (2), the fire grate segment base frame (2) is of a structure made of a hollow pipeline (3), the hollow pipeline (3) of the fire grate segment base frame (2) is of a communicating structure, and the hollow pipeline is communicated with a cooling medium conveying pipeline. The fire grate structure of the household garbage incinerator is simple in structure, the temperature of the fire grate segments can be effectively regulated and controlled, cooling is reliable, it is ensured that equipment can effectively operate for a long time, and meanwhile the service life of the fire grate segments is prolonged.

The plate grate elements (1, 2) have a top wall (12), a bottom wall (13), a front end (14), and a rear end (15). The front end has a lower inwardly curved wall portion (16) adapted to maintain a predetermined gap with the rear tip edge of the corresponding grate element. The internal cooling fluid chamber (18) includes an internal front cooling fluid passage (19) extending along the front end (14) of the grate element. The grate element has an outwardly curved front wall (22) having a nominal wall thickness varying by less than ±35%, and a lower inwardly curved wall portion extending from the top wall of the grate element to the front end, and the outwardly curved front wall forming the front tip edge (23) of the front end at the junction of the outwardly curved front wall and the lower inwardly curved wall portion.

The invention relates to a method for combusting solid fuels in an incineration plant (1), wherein the solid fuel is combusted on a combustion surface (2), wherein the combustion surface (2) is cooled with a coolant, characterized in that the heat energy obtained from the combustion surface (2) is used to operate a heat energy conversion unit (5), which is connected to a heat energy distribution network (6).

To provide a water-cooling type cooling device of a stoker device which does not impair reliability while avoiding the employment of a first-class pressure vessel.SOLUTION: A water-cooling type cooling device 1 of a stoker device comprises a stoker cooling water supply path 20 connected with cooling water flow passages formed at stokers via a connecting pipe, an open-type water tank 3 for collecting cooling water from the stoker cooling water supply path, a pump 6 for making the cooling water circulate and supplying it therebetween, and a cooling mechanism 4 for cooling the circulated cooling water. An installation height H of the open-type water tank 3 and a volume Vs of the cooling water flow passage of the stoker are set so as to satisfy a relational expression (Ph+Pr)×Vs≤0.001 with respect to head pressure Ph[MPa] reaching the open-type water tank 3 which is arranged above the stoker cooling water supply flow passage, a pressure loss Pr[MPa] at the stoker cooling water supply path when making a prescribed flow rate of cooling water flow to the stoker cooling water supply path, and a volume Vs[m3] of the cooling water flow passage of each of the stokers.SELECTED DRAWING: Figure 1

A grate assembly for use in a bottom section (28) of a combustion chamber (12) of a fluidized bed boiler (10) includes a grate bottom wall (32); a protective refractory material layer (36); a plurality of nozzle arrangements (38) for supplying fluidizing primary air; and at least one grate module (40) formed in the grate bottom wall (32). Each grate module (40) includes a solids removal opening (42); and a plurality of concentric lands (46) formed in the refractory material layer (36) and separated by front faces (48) between the lands. Each front face (48) surrounds one of the lands and follows the perimeter shape of a rectangle or a rectangle with at least one shaped corner. The lands (46) define a stepped structure. Each land includes a group of nozzle devices embedded in the layer of fire-resistant material (36) and adapted to inject air through one of the front faces (48) along one of the lands (46) adjacent the front face.

A cooled grate block as part of a grate for a system for thermally treating waste, including: a block body in the form of a cast part having an outer supporting face for the waste to be treated; a flat cavity situated directly below the supporting face, for receiving a cooling fluid; a fluid feed line and a fluid discharge line, which are connected to the cavity; at least one deflection element, which is arranged in the cavity to direct a cooling fluid within the cavity from the fluid feed line to the fluid discharge line; and a valve element situated in the end region of the cavity, for distributing the cooling fluid fed into the cavity through the fluid feed line.

A cooled grate block (1) as part of a grate for a plant for the thermal treatment of waste, comprising: a block body (3) designed as a casting with an outer support surface (7) for the waste to be treated, a planar cavity (50) arranged directly below the support surface (7) for receiving a cooling fluid, a fluid supply line (52) and a fluid discharge line (54) which are connected to the cavity (50), at least one deflection element (66) arranged in the cavity (50) to direct a cooling fluid in the cavity (50) from the fluid supply line (52) to the fluid discharge line (54), and a distribution element (74) arranged in the end face (11) of the cavity (50) for distributing the cooling fluid fed into the cavity (50) through the fluid supply line (52), characterized in that the planar cavity (50) has a surface extending from the bottom (51) to upper wall (5) has a partition wall (60) extending to the upper wall,which extends from the front wall (15) towards the rear wall (68) of the cavity (50), forms a passage (64) in the area of ​​the rear wall (68) and divides the cavity (50) into two fluid-conducting compartments (62).

The present application belongs to the technical field of power plant boiler equipment, in particular to a high-temperature low-nitrogen combustion biomass furnace, which comprises a furnace body; a water inlet pipe is arranged on the side of the lower part of the furnace body away from the feeding hopper, the water inlet pipe penetrates through the furnace body and is rotationally connected with the furnace body; a group of water-cooled grates is communicated with one side of the water inlet pipe, and a drainage pipe is communicated with the end of the water-cooled grates away from the water inlet pipe; a group of lifting air cylinders is arranged between the drainage pipe and the bottom of the furnace body, and the two ends of the lifting air cylinders are respectively hinged to the drainage pipe and the bottom of the furnace body; the lifting air cylinders are connected with a high-pressure gas source through a pipeline and a controller; a slag chamber is arranged at the corresponding position of the bottom of the furnace body and the water inlet pipe, a water tank is arranged at the top of the furnace body, and the water tank is communicated with the water inlet pipe and the drainage pipe through a pipeline; the bottom of the furnace body is communicated with a blower through an air inlet pipe; the present application adjusts the size of the excess air by rotating the water-cooled grates, increases the decomposition of nitrogen oxides generated in fuel combustion, and reduces air pollution.

The invention 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 formed in the ends of the two sides of the pivot header respectively. The invention further relates to a boiler comprising the fire grate, the two ends of a pivot header of the water-cooled fire grate extend to the outer sides of the two side wall water-cooled walls correspondingly and are rotationally supported by supporting pieces, and the pivot header is provided with a water inlet assembly and a water outlet assembly around a water inlet and a water outlet correspondingly. 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 the inclination angle can be adjusted greatly. 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.

The utility model relates to the technical field of furnace combustors, in particular to a novel fixed fire grate which comprises a fire grate body, the fire grate body comprises a coil pipe, an upper plate is arranged at the top of the coil pipe, a temperature sensor is arranged at the position, close to the center of the coil pipe, of the upper plate, and electric heating ignition bars are evenly distributed on the periphery, close to the temperature sensor, of the upper plate. And the temperature sensor and the electric heating ignition rod are fixedly connected with a lifting actuator. The water-cooled fire grate structure is adopted, automatic ignition is achieved through the lifting actuator, and ignition safety is guaranteed.

The utility model relates to a fire grate for a household garbage gasification incinerator. Comprising a fire grate shell, a water-cooling fire grate is installed in the middle of an inner cavity of the fire grate shell, the water-cooling fire grate is composed of a plurality of parallel steel pipes, the end of each steel pipe is fixedly connected with the side wall of the fire grate shell, and the end of each steel pipe is communicated with the outside of the fire grate shell; one end of each steel pipe of the water-cooling grate is sealed in the water inlet tank, and the other end of each steel pipe of the water-cooling grate is sealed in the water outlet tank; the comb teeth are installed on the comb tooth frame, the upper portions of the comb teeth are located between the adjacent steel pipes of the water-cooling grate, and the upper ends of the comb teeth are higher than the surface of the water-cooling grate. The problem that the temperature of the fire grate is too high is solved through a cooling means, the problems that ash on the fire grate is coked and uneven in distribution are solved through a technical means, the operation stability of the incinerator is guaranteed, and faults and safety accidents are reduced.

To provide a stoker-type combustion device having a cooling structure of a side fire grate capable of supporting even, operation at an extremely high temperature.SOLUTION: A stoker-type combustion device is provided with at least a pair of side fire grate units 100 arranged on an inner surface of a furnace side wall 10 respectively. The side fire grate units 100 are provided with: a side fire grate 30 facing end faces of fire grates 12, 14, 16; a movable beam 40 which is arranged along a lengthwise direction on a rear surface side of the side fire grate 30 and joined to the side fire grate 30; and an elastic member 60 capable of adjusting a wearing position by operation from outside the furnace side wall 10. The side fire grate 30 is configured to be energized inward via the movable beam 40 and the elastic member 60 and to be freely movable back and forth to the fire grates 12, 14, 16. The movable beam 40 is provided with: a cooling water inlet chamber 76 connected to a cooling water supply pipe 75; and a coolant outlet chamber 78 connected to a cooling water return pipe 77. The coolant outlet chamber 78 communicates with the cooling water inlet chamber 76.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of biomass boilers, in particular to a flexible pipe set structure used in a biomass boiler. The device comprises a high-position flexible pipe group and a low-position flexible pipe group, the two free ends of the high-position flexible pipe set are connected and communicated with the feeding port lower collecting box and the vibration fire grate outlet collecting box respectively, and the two free ends of the low-position flexible pipe set are connected and communicated with the vibration fire grate inlet collecting box and the hearth bottom collecting box respectively. The high-position flexible pipe set and the low-position flexible pipe set are oppositely bent, the inner angle of the high-position flexible pipe set and the inner angle of the low-position flexible pipe set are oppositely arranged, and the high-position flexible pipe set and the low-position flexible pipe set can vibrate along with vibration of the vibration fire grate. Due to the fact that the high-end flexible pipe set and the low-end flexible pipe set are arranged in the back-to-back bending mode, the length of the high-end flexible pipe set and the length of the low-end flexible pipe set can be prolonged, vibration generated by the vibration fire grate is transmitted in a long distance, the damage rate and the maintenance rate of the biomass boiler are reduced, and production efficiency is improved.

The utility model provides a biomass fixed bed heat utilization comprehensive experiment device capable of inhibiting slagging, and particularly relates to the technical field of biomass heat utilization. The experimental device comprises a shell, a first water-cooled fire grate and a second water-cooled fire grate, the shell is provided with a feeding pipe, an exhaust pipe, a first air pipe and two air channels which are symmetrically arranged left and right, and each air channel is provided with a second air pipe; the first air pipe is communicated with a fire grate air inlet of the first water-cooling fire grate through a hose; the two air channels are provided with air guide plates parallel to a top plate of the second fire grate shell. A detachable grate is further horizontally arranged in the inner cavity of the shell. According to the utility model, the main parts are detachably connected, and the experiment test or demonstration process of various heat utilization occasions can be realized by detaching or retaining the corresponding parts according to different heat utilization occasions; in addition, the fire grate with a water cooling effect is utilized, so that the phenomenon of high-temperature slagging is effectively inhibited.

One aspect of the invention relates to a fixed bar (2) of a stepped grid (11) having a flat upper surface (23) and a cooling circuit with a coolant inlet (20) and outlet (21) located on a lower face, characterized in that the lower face has at least one flat surface (200, 210) into which the coolant inlet (20) and outlet (21) open, and that the coolant inlet and outlet are each bordered by two diametrically opposed holes (201, 202; 211, 212). Thus, the coolant inlet and outlet can be connected to the cooling circuit by flanges through the two holes.

The present invention relates to a grate block (10) for a combustion grate, in which successive grate blocks are arranged one above the other in a stepped manner and are configured to transport the combustion material by thrusting relative to one another. The grate block (10) has a block body (12) having an upper wall (14) forming a support surface (16) along which the combustion material is transported, and a front wall (20) forming a thrust surface (22), each of which has a first air supply opening (25) formed for supplying air onto the combustion grate by a first air supply passage (27), and a lower support edge (23) defined to contact the support surface of an adjacent grate block in the thrust direction S. Further air supply passages (38) extending therethrough and oriented obliquely relative to the direction of the first air supply passages are formed in the top wall (14) and the front wall (20) for cooling the top wall (14) and the front wall (20).

The present invention relates to a water-cooled grate. The water-cooled grate comprises a pivot header. The pivot header is an elongated pipe, and is adapted to pass through boiler water-cooled walls to be rotatably supported, so that the water-cooled grate can rotate around the pivot header to adjust a tilt angle, wherein a water inlet and a water outlet are respectively formed at ends of two sides of the pivot header. The present invention further relates to a boiler comprising the described grate, wherein two ends of the pivot header of the water-cooled grate respectively extend to the outer sides of two side wall water-cooled walls and are rotatably supported by support members, and the pivot header is provided with a water inlet assembly and a water outlet assembly respectively around the water inlet and the water outlet. According to the present invention, the water-cooled grate comprises the pivot header, so that the water-cooled grate can rotate greatly around the pivot header to adjust a large tilt angle. In addition, because a water-cooled structure is used, the temperature of the entire water-cooled grate is greatly reduced relative to a non-water-cooled structure, so that fuel sticking and coking can be avoided, and components are prevented from being damaged due to high-temperature flue gas.

The grate (10) includes: grate plate (1), cooling water passage (2), slipper (3), side plate (4), pin (5), central fixed bearing (6), two side fixed bearings (7), water inlet (8), and drainage passage (9). The grate plate (1) is located on the upper part of the grate (10). The grate plate (1) extends throughout the grate (10) in the surface direction. The grate plate (1) is rectangular when viewed from above. The grate plate (1) is in contact with the combustion material. The surface of the grate plate (1) is constructed of a wear-resistant and corrosion-resistant material. The grate plate (1) is a plate with an integral continuous shape in both the length and width directions.

A grate bar front section (10) for mounting on a grate bar back section (20) in order to form a grate bar (1) for example for a waste incineration plant, wherein the grate bar front section (10) has a refractory mineral material and a top (14), a bottom (12), a front (16), two narrow sides, and a back (18) as well as a grate bar longitudinal axis (2) extending parallel to the top (14) through the front (16) and the back (18), characterized in that - a recess (70) extends from the underside (12) towards the top (14), - the recess (70) has at least one contact surface (71) for introducing a force acting in the direction of the rear (18) and / or the front (16) into the grate bar front section (10), and - at least one channel (32) with a channel longitudinal axis (33) connects the rear (18) and / or the front (16) and / or at least one side surface 15 with the recess (70), wherein the channel (32) can accommodate a bolt (30) or other connecting element for fastening the front section (10) to the rear section (20) and / or to a front plate (160).

The utility model discloses an air-cooled biomass burner adopting a heat pipe cooling anti-slagging fire grate, which relates to the technical field of biomass burners, and comprises a furnace body, a combustion chamber is arranged in the furnace body, and the combustion chamber is connected with a combustion pipe; a fire grate is installed in the combustion chamber and provided with a primary air channel and a fire grate upper plate, an inlet of the primary air channel is communicated with an air blower, and the primary air channel is provided with a primary air outlet hole with an opening facing the upper surface of the fire grate upper plate. The boiler further comprises a heat pipe used for dissipating heat of the fire grate, the heat pipe comprises an evaporation section installed in the fire grate and a condensation section communicated with the evaporation section, and the condensation section is installed in the air cooling channel of the boiler body. The heat pipe cooling mode is adopted for cooling the fire grate of the combustion engine, the cooling speed is high, the cooling effect is good, and the high-temperature slagging phenomenon can be effectively prevented; meanwhile, the movable fire poking pieces are arranged between the fire grates, and slag breaking and slag discharging can be fast achieved.

The plate-formed grate element (1, 2) has a top wall (12), a bottom wall (13), a front end (14) and a back end (15). The front end has a lower inwardly curved wall portion (16) adapted to maintain a predetermined clearance with a back tip edge of a corresponding grate element. An internal cooling fluid chamber (18) includes an internal front cooling fluid channel (19) extending along the front end (14) of the grate element. The grate element has an outwardly curved front wall (22) having a nominal wall thickness varying by less than ±35 percent and extending from the top wall of the grate element to the lower inwardly curved wall portion of the front end, and a front tip edge (23) of the front end is formed by the outwardly curved front wall at its connection with the lower inwardly curved wall portion.

Cooled grate block (1) as part of a grate for a plant for the thermal treatment of waste, comprising: a block body (3) designed as a casting with an outer support surface (7) for the waste to be treated, a planar cavity (50) arranged directly below the support surface (7) for receiving a cooling fluid, a fluid supply line (52) and a fluid discharge line (54) which are connected to the cavity (50), at least one deflection element (66) arranged in the cavity (50) to direct a cooling fluid in the cavity (50) from the fluid supply line (52) to the fluid discharge line (54), and a distribution element (74) arranged in the end face region (11) of the cavity (50) for distributing the cooling fluid fed into the cavity (50) through the fluid supply line (52).

FIXED BAR OF A STEPPED GRILLE AND STEPPED GRILLE One aspect of the invention relates to a fixed bar (2) of a stepped grid (11) having a flat upper surface (23) and a cooling circuit with a coolant inlet (20) and outlet (21) located on a lower face, characterized in that the lower face has at least one flat surface (200, 210) into which the coolant inlet (20) and outlet (21) open, and that the coolant inlet and outlet are each bordered by two diametrically opposed holes (201, 202; 211, 212). Thus, the coolant inlet and outlet can be connected to the cooling circuit by flanges through the two holes. Figure to be published with the abstract: Figure 4

The invention relates to a grate bar (100) for combustion systems, comprising a substantially closed surface facing the combustion side, a rear support region which is designed to be supported on a grate support, a front nose region which runs between the surface and the front edge and which comprises a support region formed on the lower face, and a grate cooling tube system (102) which is integrated in the grate bar (100) for conducting a cooling liquid, wherein the grate cooling tube system (102) has an inlet distributor (104) for supplying the cooling liquid, an outlet collector (114) for discharging the cooling liquid, and multiple cooling tubes (108', 108", 112', 112"), each of which is individually connected to the inlet distributor (104) and the outlet collector (114) in a fluid-tight manner.

The utility model discloses a water-cooled biomass burner adopting a water-cooled anti-slagging fire grate, which relates to the technical field of biomass burners, and comprises a furnace body, a combustion chamber is arranged in the furnace body, and the combustion chamber is connected with a combustion pipe; an ash chamber is arranged below the combustion chamber and is provided with an ash discharge door; the boiler further comprises a hopper connected with a feeding device, and is characterized in that a fire grate is installed in the combustion chamber and provided with a primary air channel, a water cooling channel and a fire grate upper plate, the primary air channel is provided with a primary air outlet hole with an opening facing the upper surface of the fire grate upper plate, and an inlet of the primary air channel is communicated with an air blower; the air blower is further connected with a secondary air pipe, and an outlet of the secondary air pipe is communicated with the combustion pipe. The fire grate is cooled in a water cooling mode, the cooling efficiency is high, the anti-slagging effect is good, the movable fire grate and the fixed fire grate are arranged, the phenomenon of fuel bridging is eliminated, and ash discharging and slag breaking are more convenient.