CN212566928U

CN212566928U - Self-cleaning vaporization flue and waste heat energy conversion system

Info

Publication number: CN212566928U
Application number: CN202021167187.1U
Authority: CN
Inventors: 梁军; 梁斌; 冯荣; 黄新刚
Original assignee: Tyrone Measurement And Control Engineering Wuhan Co ltd
Current assignee: Tyrone Measurement And Control Engineering Wuhan Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-19
Anticipated expiration: 2030-06-22

Abstract

The utility model is suitable for a indirect heating equipment technical field especially relates to a automatically cleaning vaporization flue, waste heat transduction system. The embodiment of the utility model provides a pair of automatically cleaning vaporization flue can utilize pulse airflow to strike the dragon dish cover that sets up in the vaporization flue main part, orders about the laying dust that attaches to on the dragon dish cover and breaks away from, makes the dragon dish cover can keep good heat exchange efficiency all the time. The utility model discloses simple structure, reasonable in design is fit for promoting.

Description

Self-cleaning vaporization flue and waste heat energy conversion system

Technical Field

The utility model belongs to the technical field of indirect heating equipment, especially, relate to an automatically cleaning vaporization flue, waste heat energy conversion system.

Background

In current steelmaking processes, it is often necessary to use an electric furnace or converter. The generated flue gas exchanges heat through the vaporization flue, so that the temperature of the flue gas is reduced.

In the high-temperature flue gas recovery process of a high-frequency electric furnace and an oxygen blowing converter, the high-temperature flue gas has overlarge dust content before entering a dust remover for dry collection and dust removal, and can be directly attached to and accumulated on a vaporization flue (absorbing heat energy and converting the heat energy into superheated steam) heat exchange tray cover, so that the energy conversion efficiency is gradually reduced and loses efficacy.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an automatically cleaning vaporization flue aims at storing up the smoke and dust easily in solving current vaporization flue, leads to the problem that heat exchange efficiency reduces.

The embodiment of the utility model provides a realize like this, a automatically cleaning vaporization flue, automatically cleaning vaporization flue includes vaporization flue main part, dragon dish cover and sweeps the subassembly, and the setting of dragon dish cover is in vaporization flue main part, and the export of dragon dish cover entry and dragon dish cover is all worn out from the vaporization flue main part, is used for leading-in heat transfer fluid respectively and derives the high temperature fluid after the heat transfer, sweeps the subassembly embedding and sets up in vaporization flue main part for through long-pending attached smoke and dust on the air current pulse clearance dragon dish cover.

Preferably, the purging assembly comprises a pulse gas source pipeline, one end of the pulse gas source pipeline is connected with the pulse gas source generating device, and the other end of the pulse gas source pipeline extends into the main vaporization flue body through the purging nozzle.

Preferably, the plurality of groups of the purging nozzles are arranged along the axial direction of the main body of the vaporization flue.

Preferably, the gantry cover is a helical pipe.

Another object of the embodiment of the utility model is to provide a waste heat energy conversion system, including petticoat pipe, laying dust ware and dust removal module, waste heat energy conversion system still includes as above automatically cleaning vaporization flue and PID controller, the petticoat pipe passes through the laying dust ware and is connected with automatically cleaning vaporization flue, and automatically cleaning vaporization flue passes through the gas-solid flowmeter and is connected with the dust removal module, and automatically cleaning vaporization flue passes through the PID controller with the gas-solid flowmeter and is connected.

The embodiment of the utility model provides a pair of automatically cleaning vaporization flue can utilize pulse airflow to strike the dragon dish cover that sets up in the vaporization flue main part, orders about the laying dust that attaches to on the dragon dish cover and breaks away from, makes the dragon dish cover can keep good heat exchange efficiency all the time. The utility model discloses simple structure, reasonable in design is fit for promoting.

Drawings

Fig. 1 is a schematic structural view of a self-cleaning vaporization flue provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a waste heat energy conversion system provided by an embodiment of the present invention.

In the drawings: 1. a vaporization flue main body; 2. a dragon disc cover; 3. a pulse gas source pipeline; 4. a purge nozzle; 5. an inlet of the dragon disc cover; 6. an outlet of the gantry cover; 7. a source of flue gas; 8. a smoke hood; 9. a dust collector; 10. a vaporization flue; 11. a purge assembly; 12. a PID controller; 13. a gas-solid flow meter; 14. and a dust removal module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1, for the embodiment of the utility model provides a pair of automatically cleaning vaporization flue's structure schematic diagram, automatically cleaning vaporization flue includes vaporization flue main part 1, dragon dish cover 2 and sweeps subassembly 11, and dragon dish cover 2 sets up in vaporization flue main part 1, and dragon dish cover entry 5 and dragon dish cover export 6 all wear out from vaporization flue main part 1, are used for leading-in heat transfer fluid respectively and derive the high temperature fluid after the heat transfer, sweep subassembly 11 embedding and set up on vaporization flue main part 1 for through long-pending smoke and dust that attaches on the air current pulse clearance dragon dish cover 2.

In an example of the utility model, when in use, a large amount of high temperature flue gas enters from one end of the vaporization flue main body 1, the high temperature flue gas is in direct contact with the dragon disc cover 2, flowing heat exchange fluid, which can be water, is introduced into the dragon disc cover 2, and the heat exchange fluid absorbs the heat of the high temperature flue gas through the dragon disc cover 2 and flows out from the dragon disc cover outlet 6 after heat exchange, thereby realizing the purpose of heat exchange; after the gantry cover 2 is used for a period of time, smoke in the smoke is accumulated on the outer surface of the gantry cover 2, so that the heat exchange efficiency between the gantry cover 2 and the smoke is reduced, and the sweeping component 11 disperses the smoke attached to the gantry cover 2 by using high-pressure airflow pulses, so that the gantry cover 2 recovers the heat exchange efficiency, and the normal operation of heat exchange is ensured.

As shown in fig. 1, as a preferred embodiment of the present invention, the purging assembly 11 includes a pulse gas source pipeline 3, one end of the pulse gas source pipeline 3 is connected to the pulse gas source generating device, and the other end of the pulse gas source pipeline extends into the vaporizing flue main body 1 through the purging nozzle 4.

The utility model discloses an in the example, pulse air supply generating device is used for producing the high-pressure pulse air current, and the high-pressure pulse air current just to the dragon dish cover 2 in entering into the blowing nozzle 4 through pulse air supply pipeline 3, blowing nozzle 4, and the high-pressure pulse air current is sold and is blown off for your laying dust, and dragon dish cover 2 resumes heat transfer ability.

As shown in fig. 1, as a preferred embodiment of the present invention, the gantry cover 2 is a spiral pipe.

As shown in fig. 2, the utility model provides a waste heat energy conversion system still provides, including petticoat pipe 8, laying dust ware 9 and dust removal module 14, waste heat energy conversion system still includes as above automatically cleaning vaporization flue and PID controller 12, petticoat pipe 8 is connected with automatically cleaning vaporization flue through laying dust ware 9, and automatically cleaning vaporization flue passes through gas-solid flowmeter 13 and is connected with dust removal module 14, and automatically cleaning vaporization flue passes through PID controller 12 with gas-solid flowmeter 13 and is connected.

The utility model provides a waste heat transduction system work flow as follows:

1. high-temperature flue gas generated by a flue gas source 7 (an electric furnace or a converter) is sucked out of a flue hood 8 and enters the vaporization flue main body 1;

2. when high-temperature flue gas flows through the dragon disc cover 2, heat exchange is carried out between the high-temperature flue gas and the dragon disc cover, water injected into an inlet 5 of the dragon disc cover absorbs high-temperature heat of the flue gas, the high-temperature flue gas is instantly vaporized into superheated steam and is sent out from an outlet 6 of the dragon disc cover, a large amount of dust and the like are contained in the high-temperature flue gas, when the high-temperature flue gas flows through the dragon disc cover 2, the flue gas is rapidly cooled and contracted, the pressure of the flue gas is suddenly reduced, a large amount of dust is precipitated on the dragon disc cover 2, the high-temperature flue gas is absorbed by the water in the;

3. the flue gas that comes out from the vaporization flue cooling is sent to dust removal module 14 through gas-solid flowmeter 13, and in this process, flow through the flue gas is measured through gas-solid flowmeter 13, numerical values such as temperature and dust density, convert standard signal data into, transmit PID controller 12 through the signal cable, PID controller 12 carries out the operation analysis through each item parameter numerical value of flue gas received, according to the operation result, output control signal to sweep subassembly 11, sweep subassembly 11 receives the control signal that PID controller 12 sent, sweep the deposition on the tap cover 2 through high-pressure pulse air current, and collect in the recovery household utensils, in order to ensure the transduction efficiency of tap cover 2.

In one example of the present invention, the high pressure pulsed gas flow may be nitrogen.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The self-cleaning vaporization flue is characterized by comprising a vaporization flue main body (1), a dragon disc cover (2) and a purging assembly (11), wherein the dragon disc cover (2) is arranged in the vaporization flue main body (1), a dragon disc cover inlet (5) and a dragon disc cover outlet (6) penetrate out of the vaporization flue main body (1) and are respectively used for leading in heat exchange fluid and leading out high-temperature fluid after heat exchange, and the purging assembly (11) is embedded in the vaporization flue main body (1) and is used for cleaning accumulated smoke dust on the dragon disc cover (2) through airflow pulse.

2. The self-cleaning vaporizing flue of claim 1, wherein the purging assembly (11) comprises a pulse gas source pipeline (3), one end of the pulse gas source pipeline (3) is connected with the pulse gas source generating device, and the other end of the pulse gas source pipeline extends into the vaporizing flue body (1) through the purging nozzle (4).

3. Self-cleaning vaporization flue according to claim 2, characterized in that the purge nozzles (4) are arranged in groups along the axis of the vaporization flue body (1).

4. The self-cleaning vaporizing flue of any one of claims 1 to 3, wherein the gantry cover (2) is a spiral pipe.

5. A waste heat energy conversion system comprises a smoke hood (8), a dust collector (9) and a dust removal module (14), and is characterized in that the waste heat energy conversion system further comprises a self-cleaning vaporization flue and a PID controller (12) according to any one of claims 1-4, the smoke hood (8) is connected with the self-cleaning vaporization flue through the dust collector (9), the self-cleaning vaporization flue is connected with the dust removal module (14) through a gas-solid flow meter (13), and the self-cleaning vaporization flue is connected with the gas-solid flow meter (13) through the PID controller (12).