Incinerator induced air pipeline preheating device

Abstract

The preheating device for the air inducing pipeline of the incinerator comprises air inducing equipment and the air inducing pipeline, and is characterized in that factory air and waste gas of a sludge drying machine are introduced into the air inducing pipeline, the preheating device is arranged on the air inducing pipeline, the preheating device comprises a shaft sleeve piece, and the shaft sleeve piece is provided with an inner hole, arranged on the air inducing pipeline in a sleeving mode and connected with the air inducing pipeline in a sealing mode. A gap between an inner hole of the shaft sleeve piece and the peripheral face of the air inducing pipeline is arranged to be a closed steam cavity, and an air inlet pipe and a water outlet pipe which are communicated into the steam cavity are arranged on the shaft sleeve piece. And through the preheating device, steam preheats the air inducing pipeline, the temperature of gas introduced into the incinerator is increased, and the situation that the incinerator temperature is disordered due to the large air inducing temperature difference is avoided. Meanwhile, through the structural design of the shaft sleeve piece, the heat preservation material cushion layer and the heat conduction piece, the preheating device is easy and convenient to assemble, disassemble and maintain, and the heat conduction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage incineration, in particular to a preheating device for an induced draft pipeline of an incinerator. Background Art

[0002] A waste incinerator is a device for efficiently treating waste. It uses high temperature to incinerate waste, converting it into ashes and exhaust gas, and reclaiming waste heat. It has the advantages of small footprint, fast processing speed, and good volume reduction effect. It has become one of the important ways to treat urban waste. The combustion process of a waste incinerator requires a large amount of air. If the air flow and speed are unevenly distributed, the combustion state in the incinerator will be unstable, affecting the combustion effect. Generally, an induced draft device is installed in the waste incinerator to introduce air to ensure the stability of the combustion state inside the incinerator.

[0003] The existing technology has the following problems: the air introduced into the incinerator is usually at room temperature, which will cause the temperature in the incinerator to fluctuate and affect the incineration process control. In addition, usually only the air from the plant area is introduced, without further treatment of the waste gas generated in the plant area.

[0004] Therefore, the draft scheme of the incinerator is improved and designed to preheat the gas introduced into the incinerator, reduce the temperature difference between the introduced gas and the incinerator, and avoid temperature fluctuations in the incinerator; at the same time, the waste gas generated by the sludge dryer is introduced into the incinerator to incinerate and treat the waste gas. Utility Model Content

[0005] In order to solve the above technical deficiencies, the utility model provides an incinerator induced draft pipeline preheating device.

[0006] The technical solution of the utility model: a preheating device for an induced draft duct of an incinerator comprises induced draft equipment and an induced draft duct, the induced draft duct is introduced into the plant boundary air and the exhaust gas of the sludge dryer, a preheating device is arranged on the induced draft duct, the preheating device comprises a shaft kit, the shaft kit is provided with an inner hole, and is sleeved on the induced draft duct and sealed, the gap between the inner hole of the shaft kit and the outer peripheral surface of the induced draft duct is arranged as a closed steam chamber, and an air inlet pipe and a water outlet pipe connected to the steam chamber are arranged on the shaft kit.

[0007] By adopting the above technical solution, the air at the plant boundary and the waste gas of the sludge dryer are introduced into the incinerator through the induced draft equipment and the induced draft pipeline. At the same time, the preheating device arranged on the induced draft pipeline uses the shaft set to fit with the induced draft pipeline to form a closed steam chamber, and the high-temperature steam in the plant area is introduced into the air intake pipe. The high-temperature steam conducts heat to the induced draft pipeline in the chamber, thereby increasing the temperature of the air at the plant boundary and the waste gas of the sludge dryer, and avoiding the disturbance of the stability in the incinerator.

[0008] At the same time, the gas and condensed water after heat exchange in the steam chamber are discharged from the water outlet pipe.

[0009] A further configuration of the utility model is that a cushion layer of heat-insulating material is coated on the outer peripheral surface of the shaft sleeve.

[0010] By adopting the above technical solution, a thermal insulation material cushion layer is coated on the outer surface of the shaft kit to avoid heat loss and improve the preheating effect.

[0011] The utility model is further configured as follows: sealing rings are provided at both axial ends of the inner hole of the shaft sleeve, and the shaft sleeve is symmetrically divided into a left half and a right half. The left half and the right half surround the air duct to make a detachable fixed connection, and tighten the sealing ring to close the steam chamber.

[0012] By adopting the above technical solution, the shaft kit with a left and right half-assembled structure is easy to disassemble, install and maintain.

[0013] The utility model is further configured as follows: the left half and the right half are both provided with connecting flanges at relative positions, the two connecting flanges fit together to enclose the air duct, and the connecting flanges are provided with a plurality of first connecting holes and bolts and nuts for detachable fixed connection.

[0014] The utility model is further configured as follows: a connecting arm is radially arranged at the inner hole of the shaft sleeve, and an oblong hole is radially arranged on the connecting arm; the preheating device also includes a heat conducting member, which is provided with a connecting groove for sliding cooperation with the connecting arm, and an arc-shaped portion for contacting with the outer peripheral surface of the air duct; a second connecting hole is provided in the connecting groove corresponding to the oblong hole, and bolts and nuts are used for detachable fixed connection.

[0015] By adopting the above technical solution, the heating area of ​​the air duct is increased by setting the heat conducting member, and the heat conducting member can be adjusted by the radial length position of the oblong hole of the connecting arm to adapt to air ducts with different diameters.

[0016] The beneficial effects of the utility model are as follows: the induced draft pipeline is preheated by the preheating device and steam, the temperature of the gas introduced into the incinerator is increased, and the temperature disorder of the furnace caused by the large temperature difference of the induced draft is avoided. At the same time, the structural design of the shaft set, the insulation material cushion layer, and the heat conducting part makes the assembly, disassembly and maintenance of the preheating device simple, and the heat conducting effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the embodiment of the utility model Figure 1 ;

[0018] Figure 2 The structure of the embodiment of the utility model Figure 2 ;

[0019] Figure 3The structure of the embodiment of the utility model Figure 3 .

[0020] The numbers in the accompanying drawings are: 1-air duct, 2-axis kit, 21-inner hole, 22-inlet pipe, 23-water outlet pipe, 24-left half, 25-right half, 26-connecting flange, 261-first connecting hole, 27-connecting arm, 271-oblong hole, 3-sealing ring, 4-heat conducting member, 41-connecting groove, 42-arc-shaped portion, 43-second connecting hole.

[0021] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. DETAILED DESCRIPTION

[0022] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0023] The following is a detailed description of the utility model inlet line in conjunction with the accompanying drawings. Figure 1-3 As shown, the preheating device of the induced draft pipeline 1 of the incinerator includes induced draft equipment and the induced draft pipeline 1. The induced draft pipeline 1 is connected to the factory boundary air and the exhaust gas of the sludge dryer. The induced draft pipeline 1 is provided with a preheating device, and the preheating device includes a shaft kit 2. The shaft kit 2 is provided with an inner hole 21, and is sleeved on the induced draft pipeline 1 and sealed. The gap between the inner hole 21 of the shaft kit 2 and the outer peripheral surface of the induced draft pipeline 1 is set as a closed steam chamber. The shaft kit 2 is provided with an air inlet pipe 22 and a water outlet pipe 23 connected to the steam chamber.

[0024] The air at the plant boundary and the waste gas from the sludge dryer are introduced into the incinerator through the induced draft equipment and the induced draft pipeline 1. At the same time, the preheating device arranged on the induced draft pipeline 1 is sleeved and matched with the induced draft pipeline 1 by the shaft set 2 to form a closed steam chamber, and the high-temperature steam in the plant area is introduced into the air inlet pipe 22. The high-temperature steam conducts heat to the induced draft pipeline 1 in the chamber, thereby increasing the temperature of the air at the plant boundary and the waste gas from the sludge dryer, and avoiding the disturbance of the stability in the incinerator.

[0025] At the same time, the gas and condensed water after heat exchange in the steam chamber are discharged through the water outlet pipe 23.

[0026] The outer peripheral surface of the shaft sleeve 2 is covered with a cushion layer of heat-insulating material.

[0027] A thermal insulation material cushion layer is coated on the outer surface of the shaft assembly 2 to prevent heat loss and improve the preheating effect.

[0028] Sealing rings 3 are provided at both axial ends of the inner hole 21 of the shaft sleeve 2. The shaft sleeve 2 is symmetrically divided into a left half 24 and a right half 25. The left half 24 and the right half 25 surround the air duct 1 for a detachable fixed connection, and tighten the sealing ring 3 to close the steam chamber.

[0029] The shaft kit 2 of the left and right half-assembled structure is convenient for disassembly, installation and maintenance.

[0030] The left half 24 and the right half 25 are both provided with connecting flanges 26 at relative positions. The connecting flanges 26 of the two parts fit together to enclose the air duct 1. The connecting flanges 26 are provided with a plurality of first connecting holes 261 and bolts and nuts for detachable fixed connection.

[0031] A connecting arm 27 is radially arranged at the inner hole 21 of the shaft sleeve 2, and an oblong hole 271 is radially arranged on the connecting arm 27. The preheating device also includes a heat conducting member 4, which is provided with a connecting groove 41 for sliding cooperation with the connecting arm 27, and an arc-shaped portion 42 that contacts the outer peripheral surface of the air duct 1. The connecting groove 41 is provided with a second connecting hole 43 corresponding to the oblong hole 271, and bolts and nuts are used for detachable fixed connection.

[0032] The heat conducting member 4 is provided to increase the heating area of ​​the air duct 1 . Meanwhile, the heat conducting member 4 is adjusted by adjusting the radial length position of the oblong hole 271 of the connecting arm 27 to adapt to air ducts 1 with different diameters.

[0033] The induced draft pipe 1 is preheated by the preheating device and steam to increase the temperature of the gas introduced into the incinerator, thereby avoiding the temperature disturbance of the furnace caused by the large temperature difference of the induced draft. At the same time, the structural design of the shaft set 2, the insulation material cushion layer, and the heat conducting member 4 makes the assembly, disassembly and maintenance of the preheating device simple, thereby improving the heat conducting effect.

[0034] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. Incinerator induced draft pipeline preheating device, including induced draft equipment and induced draft pipeline, Features: The induced draft duct leads to factory boundary air and sludge dryer exhaust gas, and a preheating device is arranged on the induced draft duct. The preheating device includes a shaft kit, which is provided with an inner hole, and is sleeved on the induced draft duct and sealed. The gap between the inner hole of the shaft kit and the outer peripheral surface of the induced draft duct is arranged as a closed steam chamber, and an air inlet pipe and a water outlet pipe connected to the steam chamber are arranged on the shaft kit.

2. The incinerator induced draft pipeline preheating device according to claim 1, Features: The outer peripheral surface of the shaft sleeve is covered with a cushion layer of heat-insulating material.

3. The incinerator induced draft pipeline preheating device according to claim 2, Features: Sealing rings are provided at both axial ends of the inner hole of the shaft sleeve, and the shaft sleeve is symmetrically divided into a left half and a right half. The left half and the right half surround the air duct to make a detachable fixed connection, and tighten the sealing ring to close the steam chamber.

4. The incinerator induced draft pipeline preheating device according to claim 3, Features: The left half and the right half are both provided with connecting flanges at relative positions, and the two connecting flanges are fitted together to enclose the air duct. The connecting flanges are provided with a plurality of first connecting holes and bolts and nuts for detachable fixed connection.

5. The incinerator induced draft pipeline preheating device according to claim 4, Features: A connecting arm is radially arranged at the inner hole of the shaft sleeve, and an oblong hole is radially arranged on the connecting arm. The preheating device also includes a heat conductive member, which is provided with a connecting groove for sliding cooperation with the connecting arm, and an arc-shaped portion that contacts the outer peripheral surface of the air duct. The connecting groove is provided with a second connecting hole corresponding to the oblong hole, and bolts and nuts are used for detachable fixed connection.

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