CN114923184A - Grate frame cooling system and incinerator - Google Patents
Grate frame cooling system and incinerator Download PDFInfo
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- CN114923184A CN114923184A CN202210633335.1A CN202210633335A CN114923184A CN 114923184 A CN114923184 A CN 114923184A CN 202210633335 A CN202210633335 A CN 202210633335A CN 114923184 A CN114923184 A CN 114923184A
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- Prior art keywords
- grate
- grate frame
- frame
- cooling medium
- cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a grate frame cooling system, comprising: the grate frame is provided with a cooling medium circulation cavity, and a grate frame inlet and a grate frame outlet which are communicated with the cooling medium circulation cavity are arranged on the grate frame; the static grate beam is of a tubular structure, and two ends of the static grate beam are communicated with the cooling medium circulation cavity; and the cooling medium box is used for accommodating a cooling medium and is provided with a medium box outlet communicated with the grate frame inlet so as to supply the cooling medium to the cooling medium circulation cavity. The invention can perform forced cooling on the fire grate frame and the static fire grate beam through the cooling medium, reduce the environmental temperature of the fire grate frame and the static fire grate beam, stabilize the strength structure of the equipment, prevent the materials of the fire grate frame and the static fire grate beam from deforming and distorting at high temperature, prolong the service life of the fire grate frame and the static fire grate beam, and avoid high-temperature damage and performance reduction of oil cylinder seals, bearings and the like. The invention also discloses an incinerator.
Description
Technical Field
The invention relates to the technical field of waste incineration, in particular to a grate frame cooling system and an incinerator.
Background
The garbage incineration is one of the main ways of realizing the reduction, harmless and recycling treatment of the garbage. At present, the garbage incineration gradually becomes a main way of garbage treatment, the volume of the garbage can be reduced by 80-90% through the modern incineration treatment, various pathogens can be eliminated, harmful substances are converted into harmless substances, and the resource utilization can be realized. A plurality of household garbage incinerators are used in China, the conventional garbage incinerator is mostly a mechanical garbage incinerator, garbage is poured into the garbage incinerator from a feeding hole, and the household garbage is conveyed to the surface of a fire grate through a material pusher to be dried, combusted and burned.
The fire grate is divided into a plurality of fire grate sections according to three combustion stages, such as a drying section fire grate, a combustion section fire grate and an after burning section fire grate. Each grate section can be composed of different numbers of module grates, wherein the module grates can be the same or can be designed in different scales according to the requirements of working conditions.
When garbage is burned on the surface of a fire grate, the temperature inside a hearth can reach 1200 ℃, the temperature on the surface of the fire grate can reach 400 ℃ or even higher, although primary air cooling is provided on the lower surface of the fire grate, in order to achieve combustion supporting, and on the premise that the temperature of the hearth cannot be reduced, the primary air temperature is usually set to be about 200 ℃, the loss and the cooling effect of the primary air temperature are considered, the function of cooling a fire grate frame cannot be met under the condition that garbage with high heat value or super-burned garbage is burned, the temperature of the fire grate frame below the surface of the fire grate can reach more than 200 ℃ due to the functions of heat radiation and heat conduction, the service life of the fire grate frame is influenced, and materials are deformed and distorted at the temperature.
Therefore, how to reduce the temperature of the grate frame and improve the service life is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a grate frame cooling system to reduce the temperature of the grate frame and prolong the service life;
it is another object of the present invention to provide an incinerator having the above grate frame cooling system.
In order to achieve the purpose, the invention provides the following technical scheme:
a grate frame cooling system comprising:
the grate frame is provided with a cooling medium circulation cavity and extends along the conveying direction of incinerated garbage, and a grate frame inlet and a grate frame outlet which are communicated with the cooling medium circulation cavity are arranged on the grate frame;
the static grate beam is used for mounting a static grate block, is of a tubular structure, and both ends of the static grate beam are communicated with the cooling medium circulation cavity;
and the cooling medium box is used for accommodating a cooling medium and is provided with a medium box outlet communicated with the grate frame inlet so as to supply the cooling medium to the cooling medium circulation cavity.
Optionally, in the grate frame cooling system, the grate further comprises:
the outlet of the medium box is communicated with the inlet of the grate frame through the circulating pump;
the cooling medium box is provided with a medium box inlet, and the grate frame outlet is communicated with the medium box inlet through the cooling device so as to cool the cooling medium.
Optionally, in the grate frame cooling system, a filtering device is further included in series on a pipeline between the cooling device and the inlet of the medium tank to filter impurities in the cooling medium.
Optionally, in the grate frame cooling system, a control valve is further included in series on a pipeline between the outlet of the medium tank and the inlet of the grate frame, so as to regulate the flow of the cooling medium entering the grate frame.
Optionally, in the grate frame cooling system, the control valves are automatic control valves;
the grate frame cooling system further comprises:
the temperature sensor is used for detecting the temperature of a cooling medium at the outlet of the grate frame;
and the control system is used for controlling the opening value of the control valve to be an initial opening value when the temperature detected by the temperature sensor is less than or equal to a preset temperature threshold value, and increasing the opening value of the control valve when the temperature detected by the temperature sensor is greater than the preset temperature threshold value.
Optionally, in the grate frame cooling system, the control system further comprises a manual mode, and in the manual mode, the opening value of the control valve is manually adjusted on a control panel of the control system.
Optionally, in the grate frame cooling system, the control system has a control panel of a control panel for displaying the temperature measured by the temperature sensor and the opening value of the control valve.
Optionally, in the grate frame cooling system, the inlet of the grate frame is arranged at the upstream of the grate frame along the conveying direction of the incinerated garbage, the outlet of the grate frame is arranged at the downstream of the grate frame along the conveying direction of the incinerated garbage, and the vertical height of the inlet of the grate frame is lower than that of the outlet of the grate frame.
Optionally, in the grate frame cooling system, a plurality of partition plates are arranged in the cooling medium circulation cavity at intervals, and a plurality of partition plate through holes for communicating the cooling medium circulation cavities on two sides are formed in the partition plates.
Optionally, in the grate frame cooling system, the distance between any two adjacent partitions is the same or different.
Optionally, in the grate frame cooling system, the grate frame cooling system further includes a plurality of side grate blocks disposed on the upper surface of the grate frame, and the side grate blocks are sequentially arranged along the extension direction of the grate frame.
Optionally, in the grate frame cooling system, the side grate block is L-shaped and includes a first side guard plate and a second side guard plate; the first side edge protection plate is fixed on the upper surface of the grate frame, and the second side edge protection plate is fixed on the side surface of the grate frame facing one side of the static grate block.
Optionally, in the grate frame cooling system, a plurality of grate frames are arranged side by side, and a grate cover plate is arranged at a joint of two adjacent grate frames, is positioned on the upper surface of the grate frame, and abuts against two adjacent side grate blocks;
the grate cover plates are multiple and are sequentially arranged along the extension direction of the grate frame.
Optionally, in the above grate frame cooling system, the grate cover plate comprises:
two side edges of the arc-shaped cover plate respectively abut against two adjacent side grate blocks;
and the fixed hook body is arranged at the lower part of the arc-shaped cover plate and is detachably matched with the fastening hole on the upper surface of the fire grate frame in a clamping way.
Optionally, in the grate frame cooling system, the side grate blocks and the grate cover plate are made of high-chromium cast steel.
The invention provides a grate frame cooling system, wherein a cooling medium circulation cavity is designed on a grate frame and is provided with a grate frame inlet and a grate frame outlet which are communicated with the cooling medium circulation cavity. Meanwhile, the static grate beam is designed into a tubular structure, and two ends of the static grate beam are communicated with the cooling medium circulation cavity. And the cooling medium in the cooling medium box flows out through the outlet of the medium box and flows into the cooling medium circulation cavity of the fire grate frame through the inlet of the fire grate frame to exchange heat with the fire grate frame and the static fire grate beam. The cooling medium after absorbing heat flows out through the outlet of the fire grate frame and takes away the heat of the fire grate frame and the static fire grate beam.
The invention can forcibly cool the fire grate frame and the static fire grate beam by introducing the cooling medium into the fire grate frame, reduce the environmental temperature of the fire grate frame and the static fire grate beam, stabilize the strength structure of the equipment, prevent the materials of the fire grate frame and the static fire grate beam from deforming and distorting at high temperature, prolong the service life of the fire grate frame and the static fire grate beam, and avoid high-temperature damage and performance reduction of parts around the fire grate, such as oil cylinder seals, bearings and the like.
An incinerator comprising a grate frame cooling system as claimed in any one of the preceding claims.
The incinerator provided by the invention has all the technical effects of the grate frame cooling system due to the grate frame cooling system, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a fire grate frame according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of a partial structure of a separator according to an embodiment of the present invention;
FIG. 4 is a flow diagram of a cooling medium within a grate frame according to an embodiment of the present invention;
FIG. 5 is a schematic view of a grate frame cooling system according to an embodiment of the present disclosure;
FIG. 6 is a schematic view illustrating the opening adjustment of the control valve according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a side grate block disclosed in an embodiment of the present invention;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a schematic view of a grate cover according to an embodiment of the present invention;
fig. 10 is a side view of fig. 9.
The meaning of the various reference numerals in fig. 1 to 10 is as follows:
101 is a grate frame, 1011 is a grate frame inlet, 1012 is a grate frame outlet, 102 is a static grate beam, 103 is a static grate block, 104 is a side grate block, 1041 is a first side guard plate, 1042 is a second side guard plate, 105 is a grate cover plate, 1051 is an arc cover plate, 1052 is a fixed hook body, 106 is a clapboard, 1061 is a clapboard through hole, 107 is a cooling medium box, 108 is a cooling device, 109 is a filtering device, 110 is a temperature sensor, and 111 is a control valve.
Detailed Description
The core of the invention is to provide a fire grate frame cooling system to reduce the temperature of the fire grate frame and prolong the service life;
another core of the present invention is to provide an incinerator with the above grate frame cooling system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 4 and 5, the embodiment of the invention discloses a grate frame cooling system which comprises a grate frame 101, a static grate beam 102 and a cooling medium tank 107.
The grate frame 101 is provided with a cooling medium circulation cavity, the grate frame 101 extends along the conveying direction of incinerated garbage, a grate frame inlet 1011 and a grate frame outlet 1012 which are communicated with the cooling medium circulation cavity are arranged on the grate frame 101, after the cooling medium is introduced from the grate frame inlet 1011, the cooling medium can fill the whole cooling medium circulation cavity and can be discharged out of the grate frame 101 from the grate frame outlet 1012, and therefore the heat of the grate frame 101 is taken away.
The static grate beam 102 is used for installing static grate blocks 103, the static grate blocks 103 are installed on the static grate beam 102, the static grate blocks 103 on the static grate beam 102 are respectively limited and locked by fixing clamping plates, and finally the static grate beam 102 is supported on the grate frame 101. The static fire grate beam 102 is of a tubular structure, and two ends of the static fire grate beam are communicated with the cooling medium circulation cavity, so that the cooling medium in the cooling medium circulation cavity can flow into the static fire grate beam 102 and exchange heat with the static fire grate beam 102.
The coolant tank 107 is adapted to contain a coolant and has a tank outlet in communication with the grate frame inlet 1011 for supplying the coolant to the coolant plenum. Specifically, the cooling medium tank 107 can be disposed at a higher position of the terrain by using gravitational potential energy, and under the action of gravity, the cooling medium in the cooling medium tank 107 flows into the grate frame 101 and the static grate beam 102, and is finally discharged from the grate frame outlet 1012 of the grate frame 101, so that the cooling medium can be directly discharged into the sump. In the present embodiment, the cooling medium may be any fluid capable of absorbing heat, such as water, oil, and cooling liquid.
The invention provides a grate frame 101 cooling system, wherein a cooling medium circulation cavity is designed on the grate frame 101, and the grate frame 101 cooling system is provided with a grate frame inlet 1011 and a grate frame outlet 1012 which are communicated with the cooling medium circulation cavity. Meanwhile, the static fire grate beam 102 is designed into a tubular structure, and both ends of the static fire grate beam 102 are communicated with the cooling medium circulation cavity. The cooling medium in the cooling medium box 107 flows out through the outlet of the medium box and flows into the cooling medium circulation cavity of the fire grate frame 101 through the inlet 1011 of the fire grate frame to exchange heat with the fire grate frame 101 and the static fire grate beam 102. The cooling medium after absorbing heat flows out through the grate frame outlet 1012 and carries away the heat of the grate frame 101 and the static grate beam 102.
The invention can forcedly cool the fire grate frame 101 and the static fire grate beam 102 by introducing the cooling medium into the fire grate frame 101, reduce the environmental temperature of the fire grate frame 101 and the static fire grate beam 102, stabilize the strength structure of the equipment, prevent the materials of the fire grate frame 101 and the static fire grate beam 102 from being deformed and distorted at high temperature, prolong the service life of the fire grate frame 101 and the static fire grate beam 102, and avoid high-temperature damage and performance reduction of parts around the fire grate, such as oil cylinder seals, bearings and the like.
As shown in fig. 5, the grate frame cooling system can also include a circulation pump and cooling arrangement 108. Wherein, the outlet of the medium box is communicated with the inlet 1011 of the fire grate frame by a circulating pump, the cooling medium box 107 is provided with an inlet of the medium box, and the outlet 1012 of the fire grate frame is communicated with the inlet of the medium box by a cooling device 108 so as to cool the cooling medium.
In this embodiment, the requirement for the height of the cooling medium tank 107 is reduced by adding the circulation pump, that is, the cooling medium in the cooling medium tank 107 can be pressed into the cooling medium flow cavity of the grate frame 101 by the pressurizing action of the circulation pump, so that the cooling medium in the cooling medium tank 107 can be supplied to the grate frame 101. If a circulation pump is provided, the coolant tank 107 may be disposed at a high position having gravitational potential energy.
In this embodiment, a medium tank inlet is further added to the cooling medium tank 107, so that the cooling medium can be discharged into the cooling medium tank 107 after flowing out through the grate frame outlet 1012, so that the cooling medium can flow in a reciprocating and circulating manner between the cooling medium tank 107 and the grate frame 101, thereby improving the utilization rate of the cooling medium, avoiding the waste of the cooling medium, and reducing the use cost. And the cooling device 108 is added in the circulation loop, and the cooling medium after absorbing heat can be radiated by the cooling device 108, so that the cooling medium enters the cooling medium circulation cavity of the grate frame 101 again at a lower temperature, and the heat exchange efficiency is improved. The cooling device 108 may be a heat exchanger commonly used in the prior art, and in order to increase the cooling rate, the cooling device 108 may be further equipped with a corresponding fan, so as to accelerate the heat exchange between the cooling device 108 and the surrounding environment and reduce the temperature of the cooling medium.
Since the cooling medium is circulated, there are many impurities that corrode the pipes and the grate frame 101 and the static grate beams 102. Based on this, in this embodiment, a filtering device 109 connected in series to the pipeline between the cooling device 108 and the inlet of the medium tank is further added to filter the impurities in the cooling medium. In this embodiment, the filtering device 109 is added to the circulation loop to filter impurities in the cooling medium, so as to ensure that the cooling medium circulating in the loop is kept pure, and prevent corrosion of parts in the loop from affecting the service life.
In one embodiment of the invention, the invention can further include a control valve 111 connected in series with the conduit between the outlet of the media tank and the inlet 1011 of the grate frame to regulate the flow of cooling media into the grate frame 101. It will be appreciated by those skilled in the art that the greater the flow of cooling medium into the grate frame 101, the better the cooling; the worse the cooling effect. Therefore, the cooling effect of the grate frame 101 and the static grate beam 102 can be adjusted by controlling the opening of the control valve 111.
Specifically, the control valve 111 is an automatic control valve, and the grate frame cooling system may further include a temperature sensor 110 and a control system.
The temperature sensor 110 is used to detect the temperature of the cooling medium at the outlet 1012 of the grate frame, that is, to detect the temperature of the cooling medium flowing out from the outlet 1012 of the grate frame. The control system is used for controlling the opening value of the control valve 111 to be an initial opening value when the temperature detected by the temperature sensor 110 is less than or equal to a preset temperature threshold value, and increasing the opening value of the control valve 111 when the temperature detected by the temperature sensor 110 is greater than the preset temperature threshold value.
The initial opening of the control valve 111 is set to a value that will satisfy that the temperature of the cooling medium at the exit 1012 of the grate frame is less than or equal to the predetermined temperature threshold, but not too much less than the predetermined temperature threshold, under most conditions. It should be noted that the initial opening value of the control valve 111 is set to meet the requirement that the temperature of the cooling medium at the outlet 1012 of the grate frame is lower than and close to the preset temperature threshold value under most conditions, that is, the initial opening value of the control valve 111 is set to the minimum value meeting the temperature requirement of the grate frame 101, which is beneficial to saving energy. When the temperature detected by the temperature sensor 110 is greater than the preset temperature threshold, the opening degree of the control valve 111 may be increased, so that the flow rate of the cooling medium is increased, the temperature of the cooling medium at the grate frame outlet 1012 gradually decreases until the temperature decreases below the preset temperature threshold, and the opening degree of the control valve 111 may be adjusted to the initial opening degree.
As shown in fig. 6, a specific control method of the control valve 111 includes:
step S101: collecting the temperature of the cooling medium;
i.e., the temperature of the cooling medium at the grate frame outlet 1012 is sensed by the temperature sensor 110.
Step S102: and judging whether the temperature of the cooling medium exceeds a preset temperature, if so, executing step S103, otherwise, executing step S104. The preset temperature may be set according to practical conditions, for example 80 ℃.
Step S103: increasing the opening of the control valve 111;
the increased opening value may be preset, for example, by an opening of 20%. The increased opening value may also be proportional to the temperature of the cooling medium at the grate frame outlet 1012, i.e., the greater the temperature of the cooling medium at the grate frame outlet 1012, the greater the increased opening value, and conversely, the smaller the increased opening value. A gradual increase in the opening value over time, such as an increase in the preset opening value per unit time, such as an increase in the opening of 5% per minute, may also be used until the temperature of the cooling medium at the exit 1012 of the grate frame drops below the preset temperature.
Step S104: maintaining the initial opening of the control valve 111; the initial opening value of the control valve 111 may be preset, for example, 35%.
In an embodiment of the present invention, the control system further includes a manual mode, and in the manual mode, the opening value of the control valve 111 can be manually adjusted on a control panel of the control system, that is, the opening value of the control valve 111 can be manually controlled. The manual mode can adopt the biggest flow (for example, the opening value of control valve 111 is transferred to the biggest) constantly to increase the cooling effect, the manual mode still can be used when opening and shutting down the stove or overhauing, reaches the effect of rapid cooling.
In one embodiment of the present invention, the control panel of the control system is used to display the temperature measured by the temperature sensor 110 and the opening of the control valve 111 to facilitate the operator to monitor the cooling of the grate frame 101 at any time.
In a specific embodiment of the present invention, the grate frame inlet 1011 is disposed at the upstream of the grate frame 101 along the conveying direction of the incinerated waste, the grate frame outlet 1012 is disposed at the downstream of the grate frame 101 along the conveying direction of the incinerated waste, and the vertical height of the grate frame inlet 1011 is lower than the vertical height of the grate frame outlet 1012, so that the cooling medium can flow out from the grate frame outlet 1012 after filling the cooling medium circulation cavity, and it is ensured that the cooling medium can exchange heat with any position of the grate frame 101 and the static grate beam 102.
In the embodiment of the invention, in order to cool the grate frame 101 and prolong the service life of the grate frame 101, the grate frame 101 is designed to be of a sandwich structure, so that the middle part of the grate frame 101 is of a hollow structure, and in order to ensure that the grate frame 101 has certain rigidity, as shown in fig. 2 and 3, a plurality of partition plates 106 are arranged in a cooling medium circulation cavity at intervals, and a plurality of partition plate through holes 1061 for communicating the cooling medium circulation cavities at two sides are formed in the partition plates 106. The partition through hole 1061 may be a kidney-shaped hole as shown in fig. 3, or may be designed into a hole with another shape according to actual conditions, as long as the two sides of the partition 106 can be communicated with each other. In the embodiment, by adding the partition plate 106, the overall rigidity of the grate frame 101 is improved on the premise of meeting the requirement of cooling the grate frame 101.
In an embodiment of the present invention, the spacing distance between any two adjacent partition boards 106 may be the same or different, and may be set according to the requirement. In particular, the spacing of the baffles 106 may be set smaller in portions where stiffness is desired, and the spacing of the baffles 106 may be set larger in portions where stiffness is desired.
As shown in fig. 1 and 2, the temperature is relatively high due to the proximity of the grate frame 101 to the waste combustion area, and in particular, the substantial exposure of the upper surface of the grate frame 101 to the combustion area. Therefore, the addition of the high-temperature resistant side grate block 104 to the grate frame 101 can reduce the requirements on the material of the grate frame 101 to reduce the cost, and only the high-temperature resistant material needs to be selected for the side grate block 104.
The side grate blocks 104 are arranged on the upper surface of the grate frame 101 in sequence, so that the grate frame 101 is prevented from being in direct contact with the combustion surface of the hearth, and meanwhile, the cooling medium in the grate frame 101 can also cool the side grate blocks 104.
As shown in fig. 7 and 8, in this embodiment, the side grate block 104 is L-shaped and includes a first side guard 1041 and a second side guard 1042; the first side guard plate 1041 is fixed on the upper surface of the grate frame 101, the second side guard plate 1042 is fixed on the side surface of the grate frame 101 facing one side of the static grate block 103, so that the side grate block 104 is reversely buckled on the grate frame 101, the first side guard plate 1041 and the second side guard plate 1042 can be connected to the grate frame 101 through bolts, the bolt joints can be sealed by sealing gaskets, the upper surface of the grate frame 101 and one side facing the static grate block 103 are both wrapped by the side grate block 104, the grate frame 101 is prevented from being in direct contact with the combustion surface of the hearth, and a cooling system inside the grate frame 101 can further cool the side grate block 104, the side grate block 104 is prevented from being over-high in temperature, and the service life of the side grate block is prolonged.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, a plurality of grate frames 101 are arranged side by side (as shown in fig. 1, two grate frames 101 are arranged side by side), and a grate cover plate 105 is disposed at a joint of two adjacent grate frames 101, where the grate cover plate 105 is located on an upper surface of the grate frames 101 and presses against two adjacent side grate blocks 104. The grate cover 105 is plural and is arranged in sequence along the extending direction of the grate frame 101. When a plurality of grate frames 101 are arranged side by side, the joint of two grate frames 101 is usually located in the middle of the furnace, where the temperature is high, and based on this, a grate cover plate 105 is added at the joint of two adjacent grate frames 101 to further protect the grate frames 101 from the combustion surface of the furnace.
As shown in fig. 9 and 10, the grate cover 105 includes an arcuate cover 1051 and a retaining hook 1052. Wherein, two side edges of the arc-shaped cover plate 1051 respectively press against two adjacent side grate blocks 104; the fixing hook 1052 is disposed at the lower part of the arc cover 1051 and detachably engaged with the fastening hole on the upper surface of the grate frame 101. During installation, the fixing hook 1052 can be inserted through the fastening hole on the upper surface of the grate frame 101, and then the grate cover plate 105 is pushed to move in the direction of the fixing hook 1052, so that the fixing hook 1052 can be clamped with the hole wall of the fastening hole to limit the movement of the grate cover plate 105 in the direction perpendicular to the upper surface of the grate frame 101. In order to ensure that the garbage can move and roll smoothly, one side of the arc-shaped cover plate 1051, which is in contact with the combustion surface of the hearth, is arc-shaped, and the abrasion degree of the arc-shaped cover plate can be further reduced.
In this embodiment, the side grate blocks 104 and the grate cover 105 may be made of high-chromium cast steel with high temperature resistance, corrosion resistance, and wear resistance.
The embodiment of the invention also discloses an incinerator, which comprises the grate frame cooling system disclosed by the embodiment, and the incinerator has all the technical effects of the grate frame cooling system due to the grate frame cooling system, and the details are not repeated herein.
It should be noted that, in this specification, each embodiment is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same as and similar to each other in each embodiment may be referred to.
As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (16)
1. A grate frame cooling system, comprising:
the grate comprises a grate frame (101) and a grate body, wherein the grate frame (101) is provided with a cooling medium circulation cavity and extends along the conveying direction of incinerated garbage, and a grate frame inlet (1011) and a grate frame outlet (1012) which are communicated with the cooling medium circulation cavity are arranged on the grate frame (101);
the static fire grate beam (102) is used for mounting a static fire grate block (103), the static fire grate beam (102) is of a tubular structure, and two ends of the static fire grate beam are communicated with the cooling medium circulation cavity;
and the cooling medium box (107) is used for containing a cooling medium and is provided with a medium box outlet communicated with the grate frame inlet (1011) so as to supply the cooling medium to the cooling medium circulation cavity.
2. The grate frame cooling system of claim 1, further comprising:
the outlet of the medium box is communicated with the inlet (1011) of the fire grate frame through the circulating pump;
the cooling device (108), the cooling medium box (107) has a medium box inlet, and the grate frame outlet (1012) is communicated with the medium box inlet through the cooling device (108) to cool the cooling medium.
3. The grate frame cooling system of claim 2 further comprising a filter (109) connected in series with the conduit between the cooling device (108) and the media tank inlet to filter impurities within the cooling media.
4. The grate frame cooling system of claim 1 further comprising a control valve (111) connected in series with a conduit between the media tank outlet and the grate frame inlet (1011) to regulate the flow of cooling medium into the grate frame (101).
5. The grate frame cooling system of claim 4 wherein the control valves (111) are automatic control valves;
the grate frame cooling system further comprises:
a temperature sensor (110) for sensing a temperature of a cooling medium at an outlet (1012) of the grate frame;
the control system is used for controlling the opening value of the control valve (111) to be an initial opening value when the temperature detected by the temperature sensor (110) is smaller than or equal to a preset temperature threshold value, and increasing the opening value of the control valve (111) when the temperature detected by the temperature sensor (110) is larger than the preset temperature threshold value.
6. The grate frame cooling system of claim 5 wherein the control system further comprises a manual mode in which an opening of the control valve (111) is manually adjustable on a control panel of the control system.
7. The grate frame cooling system of claim 6 wherein a control panel of the control system is configured to display the temperature measured by the temperature sensor (110) and the opening value of the control valve (111).
8. The grate frame cooling system of any one of claims 1-7 wherein the grate frame inlet (1011) is disposed upstream of the grate frame (101) in a transport direction of incinerated waste, the grate frame outlet (1012) is disposed downstream of the grate frame (101) in the transport direction of incinerated waste, and a vertical height of the grate frame inlet (1011) is less than a vertical height of the grate frame outlet (1012).
9. The grate frame cooling system of any one of claims 1-7, wherein a plurality of partitions (106) are spaced in the cooling medium circulation chamber, and a plurality of partition through holes (1061) for communicating the cooling medium circulation chambers on both sides are formed in the partitions (106).
10. The grate frame cooling system of claim 9 wherein any two adjacent partitions (106) are spaced apart by the same or different distances.
11. The grate frame cooling system of any one of claims 1-7, further comprising a plurality of side grate blocks (104) disposed on an upper surface of the grate frame (101), wherein the side grate blocks (104) are arranged in sequence along an extending direction of the grate frame (101).
12. The grate frame cooling system of claim 11 wherein the side grate block (104) is L-shaped and includes a first side guard (1041) and a second side guard (1042); the first side edge protection plate (1041) is fixed on the upper surface of the grate frame (101), and the second side edge protection plate (1042) is fixed on the side surface of the grate frame (101) facing one side of the static grate block (103).
13. The grate frame cooling system of claim 12, wherein the grate frames (101) are arranged side by side, a grate cover plate (105) is arranged at a joint of two adjacent grate frames (101), and the grate cover plate (105) is positioned on the upper surface of the grate frames (101) and is pressed against two adjacent side grate blocks (104);
the grate cover plates (105) are multiple and are sequentially arranged along the extending direction of the grate frame (101).
14. The grate frame cooling system of claim 13 wherein the grate cover plate (105) comprises:
the two side edges of the arc-shaped cover plate (1051) are respectively pressed against the two adjacent side grate blocks (104);
and the fixing hook body (1052) is arranged at the lower part of the arc cover plate (1051) and is detachably clamped and matched with a fastening hole on the upper surface of the fire grate frame (101).
15. The grate frame cooling system of claim 13 wherein the side grate blocks (104) and the grate cover (105) are both high chrome cast steel.
16. An incinerator comprising a grate frame cooling system according to any one of claims 1 to 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633335.1A CN114923184A (en) | 2022-06-07 | 2022-06-07 | Grate frame cooling system and incinerator |
| PCT/CN2022/138539 WO2023236481A1 (en) | 2022-06-07 | 2022-12-13 | Fire grate frame cooling system and incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210633335.1A CN114923184A (en) | 2022-06-07 | 2022-06-07 | Grate frame cooling system and incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114923184A true CN114923184A (en) | 2022-08-19 |
Family
ID=82813173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210633335.1A Pending CN114923184A (en) | 2022-06-07 | 2022-06-07 | Grate frame cooling system and incinerator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114923184A (en) |
| WO (1) | WO2023236481A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236481A1 (en) * | 2022-06-07 | 2023-12-14 | 上海康恒环境股份有限公司 | Fire grate frame cooling system and incinerator |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3838623B2 (en) * | 2001-04-26 | 2006-10-25 | 株式会社荏原製作所 | Stoker-type incinerator and combustion equipment |
| JP3876133B2 (en) * | 2001-06-21 | 2007-01-31 | 株式会社タクマ | Water-cooled stoker device for waste incinerator and its operation method |
| JP3922992B2 (en) * | 2002-09-24 | 2007-05-30 | 株式会社荏原製作所 | Stoker-type incinerator combustion equipment |
| JP4675858B2 (en) * | 2006-08-02 | 2011-04-27 | カワサキプラントシステムズ株式会社 | Waste incinerator |
| CN106871134B (en) * | 2017-04-17 | 2023-11-03 | 云南水务投资股份有限公司 | Novel water-cooling grate system of household garbage incinerator and incinerator thereof |
| CN109323277A (en) * | 2017-07-31 | 2019-02-12 | 上海明华电力技术工程有限公司 | Backheating type cooling system for fire grate |
| CN110617484A (en) * | 2019-10-07 | 2019-12-27 | 上海康恒环境股份有限公司 | Fire grate block structure of household garbage incineration grate |
| CN112664954B (en) * | 2020-12-26 | 2023-08-22 | 上海康恒环境股份有限公司 | Thermal expansion compensation device of waste incinerator fire grate and installation method thereof |
| CN113587100A (en) * | 2021-08-03 | 2021-11-02 | 上海环境卫生工程设计院有限公司 | Household garbage incineration grate system |
| CN114923184A (en) * | 2022-06-07 | 2022-08-19 | 上海康恒环境股份有限公司 | Grate frame cooling system and incinerator |
-
2022
- 2022-06-07 CN CN202210633335.1A patent/CN114923184A/en active Pending
- 2022-12-13 WO PCT/CN2022/138539 patent/WO2023236481A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236481A1 (en) * | 2022-06-07 | 2023-12-14 | 上海康恒环境股份有限公司 | Fire grate frame cooling system and incinerator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023236481A1 (en) | 2023-12-14 |
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