Fire grate heat control device

Abstract

A fire grate heat control device, air inducing equipment and an air inducing pipeline are characterized in that factory boundary air is introduced into the air inducing pipeline, a notch is formed in the air inducing pipeline, first flange plates are welded to the two ends of the notch, a temperature control mechanism comprises a first connecting pipeline, a heat exchange pipe, an air baffle and a servo control motor, the factory boundary air of a fire grate is introduced into the air inducing pipeline, and the first flange plates are welded to the two ends of the notch. When the fire grate is in use, the fire grate firstly passes through the vent hole of the temperature control mechanism to be in contact with the heat exchange pipe, the heat exchange pipe is communicated with a pipeline for discharging waste gas of the fire grate, and the heat exchange pipe is heated by high temperature of the fire grate waste gas and indirectly preheats factory air in the vent hole. And the temperature of factory air is increased, so that the temperature in the fire grate is prevented from being disordered due to induced air temperature difference caused by cold air entering the boiler. Meanwhile, the structure does not occupy a large space, can be connected with an old pipeline in a factory, and is low in transformation cost and convenient to maintain, disassemble and replace.

Description

Technical Field

[0001] This utility model relates to the field of waste incineration technology, specifically to a grate heat control device. Background Technology

[0002] In actual operation, waste incinerators frequently face fluctuations in calorific value, meaning that the calorific value sometimes exceeds or falls below the required level. These large fluctuations not only affect the incinerator's operational efficiency and stability but can also negatively impact the surrounding environment. For example, excessively high furnace temperatures can lead to the generation of secondary pollutants such as nitrogen oxides and sulfur dioxide; while excessively low furnace temperatures can result in incomplete waste combustion, producing foul-smelling gases and fly ash.

[0003] Furthermore, because the combustion process in waste incinerators requires a large amount of air, and the air introduced into the incinerator is usually at room temperature, this causes turbulent temperature fluctuations within the incinerator, affecting the control of the incineration process. Uneven distribution of air flow and velocity can also lead to unstable combustion within the incinerator, impacting combustion efficiency.

[0004] Therefore, in order to solve the problem of large fluctuations in exhaust heat from waste incinerators and improve the efficiency and stability of waste incineration, it is necessary to improve the heat control processes of incinerators, including rapid heating, secondary utilization of high-heat gas flow, and resistance to high-heat gas flow impact, to ensure stable furnace temperature, full utilization of heat, and achieve efficient, clean and sustainable waste incineration.

[0005] In light of the technical problem described in this application, a grate heat control device is designed to control the temperature and flow rate of the gas introduced into the grate, thereby achieving the purpose of rapid grate heating and secondary utilization of high-temperature gas flow.

[0006] Moreover, in response to the lack of space for equipment renovation in old factory areas and the difficulty of small temperature control devices to accurately control the temperature and flow rate of large amounts of air, a new structural design scheme was proposed. Utility Model Content

[0007] In order to overcome the shortcomings of the above-mentioned technology, this utility model provides a grate heat control device.

[0008] A further feature of this utility model is a grate heat control device, comprising a temperature control mechanism, an induced draft device, and an induced draft pipe. The induced draft pipe is connected to the plant boundary air. The induced draft pipe has a notch, and a first flange is welded to both ends of the notch. The temperature control mechanism includes a first connecting pipe, a heat exchange pipe, a baffle plate, and a servo control motor. The first connecting pipe has a first ventilation hole, and a second flange is provided at both openings of the first ventilation hole. The first connecting pipe is located at the notch, and the second flanges at both ends are respectively sealed to the first flange of the notch. An installation platform is provided on the outer circumference of the first connecting pipe. The installation platform has a pivot hole, an inlet hole, and an outlet hole that penetrate into the first ventilation hole.

[0009] The heat exchange tube includes an inlet end, a main body section, and an outlet end. The main body section is located inside the first ventilation hole. The inlet end and the outlet end extend from the inlet hole and the outlet hole to the outside of the first connecting pipe and are connected to the pipe that discharges exhaust gas from the grate.

[0010] The wind deflector is disposed in the first ventilation hole and is provided with a rotating shaft extending through the rotating shaft hole to the outside of the first connecting pipe. The servo control motor is fixed to the mounting platform and works in conjunction with the rotating shaft to control the rotation angle of the wind deflector. The rotating shaft hole, inlet hole, and outlet hole are provided with sealing rings.

[0011] A further feature of this invention is that the device also includes a detection mechanism, which includes a second connecting pipe, a temperature detection unit, and a gas flow rate detection unit. The second connecting pipe is provided with a second first ventilation hole and a third flange. The temperature detection unit and the gas flow rate detection unit are disposed in the second first ventilation hole and are connected to an external signal.

[0012] A further feature of this invention is that: 4. Several sets of temperature control mechanisms are provided at the notch, and detection mechanisms are connected between these sets of temperature control mechanisms.

[0013] A further feature of this invention is that the main body of the heat exchange tube has a spiral structure, and the main body is coaxially arranged with the first ventilation hole.

[0014] A further feature of this invention is that, among the plurality of temperature control mechanisms, the heat exchange tube of one group is connected to the steam pipeline in the plant area.

[0015] A further feature of this invention is that the device also includes an oxygen generator, which is connected to the induced draft pipe and inputs oxygen into the grate along with the air at the plant boundary.

[0016] This utility model has the following beneficial effects: 1. By modifying the existing induced draft duct in the plant area, cutting a notch, and welding a first flange at the notch, and coordinating with the designed temperature control mechanism structure, the second flange of the temperature control mechanism is directly installed at the notch to form a ventilation hole connection. The plant boundary air introduced into the grate by the induced draft duct will first pass through the ventilation hole of the temperature control mechanism and come into contact with its heat exchange tube. The heat exchange tube is connected to the pipeline for the exhaust gas discharged from the grate. The high temperature of the exhaust gas from the grate is used to heat the heat exchange tube and indirectly preheat the plant boundary air in the ventilation hole. The temperature of the plant boundary air is increased, avoiding the disruption of the grate temperature caused by the induced draft temperature difference when cold air enters the boiler.

[0017] At the same time, the structure does not take up a lot of space, can connect to the old pipelines in the factory area, has low renovation costs, and is convenient for maintenance, disassembly and replacement.

[0018] 2. By setting up a baffle structure and using a servo control motor to control the angle of the baffle, the interception area of ​​the baffle is controlled, the flow rate of the introduced air is slowed down, and turbulence is avoided in the grate, which would affect the grate temperature.

[0019] By setting up multiple sets of temperature control mechanisms, multi-stage preheating is achieved, avoiding insufficient preheating temperature caused by short contact time between the introduced air and the heat exchange tubes. Simultaneously, detection mechanisms are set up between these multiple sets of mechanisms, using temperature detection units and gas flow rate detection units to monitor the temperature and flow rate of the introduced air. This allows for real-time control of the baffle angle and changes in the medium within the heat exchange tubes. For example, if the preheating temperature is insufficient, the flow rate can be further reduced to extend the contact time, or high-temperature steam from the plant area can be controlled to enter one of the heat exchange tube sets to improve the preheating effect.

[0020] By installing an oxygen generator, the oxygen content of the introduced air is increased, thereby improving the combustion effect within the grate. Attached Figure Description

[0021] Figure 1 The structure of this utility model embodiment Figure 1 ;

[0022] Figure 2 The structure of this utility model embodiment Figure 2 ;

[0023] Figure 3 The structure of this utility model embodiment Figure 3 .

[0024] Figure 4 The structure of this utility model embodiment Figure 4 ;

[0025] Figure 5 The structure of this utility model embodiment Figure 5 .

[0026] Among them, 1-exhaust duct, 11-first flange, 2-first connecting duct, 21-first ventilation hole, 22-second flange, 23-mounting platform, 3-heat exchange tube, 31-air inlet, 32-main body section, 33-air outlet, 4-wind baffle, 5-servo control motor, 61-second connecting duct, 62-stability detection unit, 63-third flange.

[0027] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0028] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0029] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-5 As shown,

[0030] A grate heat control device includes a temperature control mechanism, an induced draft device, and an induced draft pipe 1. The induced draft pipe 1 is connected to the plant boundary air. The induced draft pipe 1 has a notch, and a first flange 11 is welded to both ends of the notch. The temperature control mechanism includes a first connecting pipe 2, a heat exchange pipe 3, a baffle plate 4, and a servo control motor 5. The first connecting pipe 2 has a first ventilation hole 21, and a second flange 22 is provided at both openings of the first ventilation hole 21. The first connecting pipe 2 is located at the notch, and the second flanges 22 at both ends are respectively sealed to the first flange 11 of the notch. The outer circumference of the first connecting pipe 2 is provided with a mounting platform 23, and the mounting platform 23 has a shaft hole, an inlet hole, and an outlet hole that penetrate into the first ventilation hole 21.

[0031] The heat exchange tube 3 includes an inlet end 31, a main body section 32, and an outlet end 33. The main body section 32 is disposed in the first ventilation hole 21. The inlet end 31 and the outlet end 33 extend from the inlet hole and the outlet hole to the outside of the first connecting pipe 2 and are connected to the pipe for discharging exhaust gas from the grate.

[0032] The wind deflector 4 is disposed in the first ventilation hole 21 and is provided with a rotating shaft extending through the rotating shaft hole to the outside of the first connecting pipe 2. The servo control motor 5 is fixed to the mounting platform 23 and is linked with the rotating shaft to control the rotation angle of the wind deflector 4. The rotating shaft hole, inlet hole and outlet hole are provided with sealing rings.

[0033] The device also includes a detection mechanism, which includes a second connecting pipe 61, a temperature detection unit 62, and a gas flow rate detection unit. The second connecting pipe 61 is provided with a second first ventilation hole 21 and a third flange 63. The temperature detection unit 62 and the gas flow rate detection unit are disposed in the second first ventilation hole 21 and are connected to an external signal.

[0034] 4. Several sets of temperature control mechanisms are provided at the gap, and detection mechanisms are connected between these sets of temperature control mechanisms.

[0035] The main body section 32 of the heat exchange tube 3 has a spiral structure, and the main body section 32 is coaxially arranged with the first ventilation hole 21.

[0036] Of the several sets of temperature control mechanisms, one set of heat exchange tubes 3 is connected to the steam pipeline in the plant area.

[0037] The device also includes an oxygen generator, which is connected to the induced draft pipe 1 and supplies oxygen to the grate along with the air at the plant boundary.

[0038] This utility model has the following beneficial effects: 1. By modifying the original induced draft pipe 1 in the plant area, cutting a notch, and welding a first flange 11 at the notch, and coordinating with the design of the temperature control mechanism structure, the second flange 22 of the temperature control mechanism is directly installed at the notch to form a ventilation hole connection. The plant boundary air introduced into the grate by the induced draft pipe 1 will first pass through the ventilation hole of the temperature control mechanism and come into contact with its heat exchange tube 3. The heat exchange tube 3 is connected to the pipe for the exhaust gas discharged from the grate. The high temperature of the exhaust gas from the grate is used to heat the heat exchange tube 3 and indirectly preheat the plant boundary air in the ventilation hole. The temperature of the plant boundary air is increased, avoiding the disruption of the grate temperature caused by the induced draft temperature difference due to cold air entering the boiler.

[0039] At the same time, the structure does not take up a lot of space, can connect to the old pipelines in the factory area, has low renovation costs, and is convenient for maintenance, disassembly and replacement.

[0040] By setting up the baffle plate 4 structure and using the servo control motor 5 to control the angle of the baffle plate 4, the interception area of ​​the baffle plate 4 is controlled, the flow rate of the introduced air is slowed down, and turbulence is avoided in the grate, which affects the grate temperature.

[0041] By setting up multiple sets of temperature control mechanisms, multi-stage preheating is achieved, avoiding insufficient preheating temperature caused by short contact time between the introduced air and heat exchange tube 3. Simultaneously, detection mechanisms are set up between these multiple sets of mechanisms, using temperature detection unit 62 and gas flow rate detection unit to detect the temperature and flow rate of the introduced air. This allows for real-time control of the angle of the baffle plate 4 and changes in the medium within the heat exchange tube 3. For example, if the preheating temperature is insufficient, the flow rate can be further reduced to extend the contact time, or high-temperature steam from the plant area can be controlled to enter one of the heat exchange tubes 3 to improve the preheating effect.

[0042] By installing an oxygen generator, the oxygen content of the introduced air is increased, thereby improving the combustion effect within the grate.

[0043] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A grate heat control device, comprising a temperature control mechanism, an induced draft device, and an induced draft duct, wherein the induced draft duct is connected to air at the plant boundary, characterized in that: The exhaust pipe is provided with a notch, and a first flange is welded to both ends of the notch. The temperature control mechanism includes a first connecting pipe, a heat exchange pipe, a baffle plate, and a servo control motor. The first connecting pipe is provided with a first ventilation hole, and a second flange is provided at both openings of the first ventilation hole. The first connecting pipe is located at the notch, and the second flanges at both ends are respectively sealed to the first flange of the notch. The outer circumference of the first connecting pipe is provided with a mounting platform, and the mounting platform is provided with a pivot hole, an inlet hole, and an outlet hole that penetrate into the first ventilation hole. The heat exchange tube includes an inlet end, a main body section, and an outlet end. The main body section is located inside the first ventilation hole. The inlet end and the outlet end extend from the inlet hole and the outlet hole to the outside of the first connecting pipe and are connected to the pipe that discharges exhaust gas from the grate. The wind deflector is disposed in the first ventilation hole and is provided with a rotating shaft extending through the rotating shaft hole to the outside of the first connecting pipe. The servo control motor is fixed to the mounting platform and works in conjunction with the rotating shaft to control the rotation angle of the wind deflector. The rotating shaft hole, inlet hole, and outlet hole are provided with sealing rings.

2. The grate heat control device according to claim 1, characterized in that: The device also includes a detection mechanism, which includes a second connecting pipe, a temperature detection unit, and a gas flow rate detection unit. The second connecting pipe is provided with a second first ventilation hole and a third flange. The temperature detection unit and the gas flow rate detection unit are disposed in the second first ventilation hole and are connected to an external signal.

3. The grate heat control device according to claim 2, characterized in that: Several sets of temperature control mechanisms are provided at the gap, and detection mechanisms are connected between these sets of temperature control mechanisms.

4. The grate heat control device according to claim 3, characterized in that: The main body of the heat exchange tube has a spiral structure and is coaxially arranged with the first ventilation hole.

5. The grate heat control device according to claim 4, characterized in that: Of the several sets of temperature control mechanisms, one set of heat exchange tubes is connected to the steam pipeline in the plant area.

6. The grate heat control device according to claim 5, characterized in that: The device also includes an oxygen generator connected to the induced draft duct, which supplies oxygen to the grate along with the air from the plant boundary.

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