CN107805812B

CN107805812B - High-efficiency transfer mechanism and method for enamel coating and sintering processes of enamel pipe of air preheater

Info

Publication number: CN107805812B
Application number: CN201711286429.1A
Authority: CN
Inventors: 杜勇; 张吉轩; 高长龙; 孔庆成
Original assignee: Shandong Zhongqi Environmental Protection Equipment Manufacturing Co ltd
Current assignee: Shandong Zhongqi Environmental Protection Equipment Manufacturing Co ltd
Priority date: 2017-12-07
Filing date: 2017-12-07
Publication date: 2023-09-19
Anticipated expiration: 2037-12-07
Also published as: CN107805812A

Abstract

The application relates to a high-efficiency transfer mechanism and a high-efficiency transfer method for enamel coating and sintering processes of an enamel pipe of an air preheater. The enameling conveying chain is connected with a chain hoist operating system on the sintering station through a transfer device, the chain hoist operating system comprises an operating guide rail and a plurality of chain hoists which are used for hanging a pit furnace cover on the guide rail, the chain hoists can move or lift in and out of the pit furnace along the operating guide rail under the control of a remote controller, and the enameling and sintering precision operation is realized by controllably matching the chain hanging at the enameling station with the sintering chain hoist operating chain, so that the production efficiency of enamel pipes is improved, the labor consumption is reduced, and the labor intensity of workers is lightened.

Description

High-efficiency transfer mechanism and method for enamel coating and sintering processes of enamel pipe of air preheater

Technical Field

The application relates to the field of enamel pipe production, in particular to a high-efficiency transfer mechanism and a high-efficiency transfer method for enamel pipe enamel coating and sintering processes of an air preheater.

Background

Along with the requirements of environmental protection and energy saving, all boiler flue gas needs to be subjected to waste heat recovery, and an air preheater (air preheater) is also called an air preheater for short, so that the air preheater is preheating equipment for improving the heat exchange performance of a boiler and reducing the heat loss. The air preheater has the function of conducting heat carried in flue gas exhausted from a tail flue of the boiler to air before entering the boiler through the enamel heat exchange element, preheating the air to a certain temperature and transferring the heat to the air before entering the boiler.

Steel is often used to make heat transfer elements because of its excellent heat transfer properties and mechanical properties, but steel heat transfer elements have poor resistance to chemical attack. After the common steel pipe air preheater is operated for a long time, the heat exchange efficiency is greatly reduced due to dust accumulation and the like. According to the measurement of the electric power institute in the united states, corrosion of steel equipment is very serious under normal operation, which not only affects stable operation of the system but also increases maintenance and operation costs. Therefore, it is necessary to select an excellent coating material for the metal substrate to prepare a heat transfer element having good corrosion resistance. The enamel pipe has smooth surface, less dust adhesion, small dust and dirt heat resistance, small smoke flow resistance, fast pipe wall temperature increase and high heat exchange strength, so that the total heat exchange amount is increased and the heat efficiency of the boiler is improved. The temperature of discharged smoke is reduced, and the heat efficiency is improved: in the design of the boiler, the low-temperature end of the preheater is often prevented from being corroded by increasing the exhaust gas temperature, and the enamel pipe type air preheater can reduce the exhaust gas temperature to below 140 ℃, so that the thermal efficiency of the boiler is improved by more than 1%.

Compared with common pipes, the enamel pipe type air preheater has higher corrosion resistance and flushing resistance, is free from dust adhesion, is replaceable, has a service life which is 3-5 times longer than that of the common material air preheater, and is more popular with boiler operators. The enamel pipe sintering is generally intermittent pit furnace sintering, a workpiece is transported to a pit furnace station by a hanging chain at a enamelling station, the workpiece is manually picked up and hung on a pit cover of the sintering station from the hanging chain in the enamelling process, the pipe fitting is moved and transported by a crane in the pit furnace, the left-right and front-back movement is also realized by the rotation of the crane, and then the enamel pipe is manually picked up and hung on a hanging rack or a secondary enamelling hanging chain from a pit cover, so that the labor intensity is high, the number of required personnel is large, and the production efficiency is low.

Disclosure of Invention

Aiming at the problems existing in the background technology, the application provides a high-efficiency transfer mechanism for enameling and sintering processes of an enamel pipe of an air preheater, which is used for continuously enameling and sintering enamel pipe products of the air preheater, and realizes the accurate operation of enameling and sintering by controllably matching a suspension chain of an enamel station with an operation chain of a chain hoist of a sintering station, thereby improving the production efficiency of enamel pipes, reducing the labor consumption and lightening the labor intensity of workers.

The utility model provides an air preheater enamel pipe is scribbled and is baked with high efficiency transport mechanism of sintering process, includes the enamel conveyer chain, scribble the conveyer chain and be connected with the chain hoist operating system on the sintering station through transfer device, chain hoist operating system includes the operation guide rail, the operation guide rail is steel construction support ring rail, is provided with a plurality of chain hoist that are used for hanging pit furnace bell on the operation guide rail, and chain hoist can be under remote controller control along operation guide rail removal or lift business turn over pit furnace, a plurality of first lifting hooks that are used for hanging enamel pipe of lower surface equipartition of pit furnace bell.

Preferably, the enamelling conveying chain consists of a conveying guide rail and a hanging chain running on the conveying guide rail;

preferably, a plurality of second lifting hooks with equal intervals are arranged on the suspension chain;

preferably, the conveying guide rail is arranged on a steel frame of the enamelling area;

preferably, a plurality of reinforcing brackets are arranged in the middle of the running guide rail;

preferably, the running guide rail is mounted on the steel frame through a reinforcing bracket;

preferably, the running guide rail is formed by welding I-steel;

preferably, the support ring rail forms a closed running guide rail loop by taking the center of the two circular shaft furnaces as a track.

As a preferred scheme, the application also provides an operation method of the enamel pipe enamel coating and sintering process high-efficiency transfer mechanism, which comprises the following steps:

1) Manually removing the enamel pipe from the second lifting hook of the enamel conveying chain, and hanging the enamel pipe on the first lifting hook of the sintering device;

2) Manually operating the remote controller to enable the chain hoist driving the first lifting hook to run to the upper part of the pit furnace along the running guide rail, and controlling the chain hoist to descend by operating the remote controller to enable the enamel pipe to enter the pit furnace for sintering;

3) And after sintering, manually operating the remote controller to lift the chain hoist, so that the chain hoist continuously runs forwards along the running guide rail, and conveying the enamel pipe to a hanging area for airing and cooling.

The beneficial effects obtained by the application are as follows:

1) Through setting up the link chain hoist of operation guide rail and remote control setting and mutually cooperating, saved the operation process that uses the driving to reciprocate and realize upper and lower pit furnace, shortened production time, practiced thrift manufacturing cost.

2) The I-steel guide rail has high strength, light weight and stable and reliable structural performance.

3) Through the controllable matching of the enamelling station suspension chain and the sintering chain hoist operation chain, the enamelling and sintering accurate operation is realized, the production efficiency of the enamel pipe is improved, the labor amount is reduced, and the labor intensity of workers is lightened.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a high efficiency transfer mechanism for enamel pipe enameling and sintering processes;

FIG. 2 is a schematic diagram of a coated conveyor chain

FIG. 3 is a top view of the efficient transfer mechanism for the enamel pipe enamel coating and sintering process;

in the figure: the device comprises a 1-enamel pipe, a 2-enamel zone steel frame, a 3-conveying guide rail, a 4-hanging chain, a 5-endless chain hoist, a 6-running guide rail, a 7-sintering zone steel frame, an 8-pit furnace cover, a 9-first lifting hook, a 10-pit furnace and an 11-sintering zone.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The high-efficiency transfer mechanism for enamel coating and sintering processes of the enamel pipe of the air preheater as shown in fig. 1-3 comprises an enamel coating conveying chain and a chain hoist running system which are sequentially arranged according to the production process, wherein the enamel coating conveying chain consists of a conveying guide rail 3 and a hanging chain 4 running on the conveying guide rail, the conveying guide rail 3 is arranged on a steel frame 2 of an enamel coating area, and a plurality of second lifting hooks with equal intervals are arranged on the hanging chain 4; the enameling conveying chain is connected with a chain hoist operation system on a sintering station through a transfer device, the chain hoist operation system comprises an operation guide rail 6, the operation guide rail 6 is a steel structure support ring rail formed by welding I-steel, the support ring rail forms a closed operation guide rail loop by taking the center of two round pit furnaces 10 as a track, a plurality of reinforcing brackets are arranged in the middle of the ring rail, the reinforcing brackets are arranged on a sintering zone steel frame 7, a plurality of chain hoists 5 for hanging pit furnace covers are arranged on the operation guide rail, the chain hoists 5 can move or lift in and out the pit furnaces 10 along the operation guide rail 6 under the control of a remote controller, and a plurality of first lifting hooks 9 for hanging enamel pipes are uniformly distributed on the lower surface of the pit furnace covers 8. The whole loop is provided with 6-8 well covers, 2 well covers are used for placing enamel pipes in a well furnace and sintering at the same time, 1 well cover realizes conversion from a coating enamel conveying chain to a chain hoist operation system at a conversion station, 2-5 well covers are provided with enamel pipes for cooling in a hanging area, and one well cover is used for discharging enamel pipes in a discharging area.

The application saves the working process of realizing the up-down pit furnace by using the up-down running of the travelling crane by arranging the running guide rail and the loop chain hoist arranged in a remote control mode to mutually cooperate, shortens the production time and saves the production cost. The I-steel guide rail has high strength, light weight and stable and reliable structural performance. Through the controllable matching of the enamelling station suspension chain and the sintering chain hoist operation chain, the enamelling and sintering accurate operation is realized, the production efficiency of the enamel pipe is improved, the labor amount is reduced, and the labor intensity of workers is lightened.

While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.

Claims

1. The utility model provides a high efficiency transfer mechanism of air preheater enamel pipe coating and sintering process, its characterized in that, including coating enamel conveying chain, it is connected with the chain hoist operating system on the sintering station through transfer device to coat enamel conveying chain, it comprises conveying rail and the suspension chain that moves on conveying rail to coat enamel conveying chain, chain hoist operating system includes the operating rail, the operating rail is steel construction support ring rail, is provided with a plurality of chain hoist that are used for hanging the pit furnace bell on the operating rail, and chain hoist can be moved or lift business turn over pit furnace along the operating rail under the remote controller control, the support ring rail uses two circular pit furnace centers as the orbit to form a confined operating rail loop, a plurality of first lifting hooks that are used for hanging enamel pipe of lower surface equipartition pit furnace bell.

2. The efficient transfer mechanism for enamel coating and sintering processes of an air preheater according to claim 1, wherein a plurality of second lifting hooks with equal intervals are arranged on the suspension chain.

3. The efficient transfer mechanism for enamel coating and sintering processes of enamel pipes of an air preheater according to claim 1, wherein the conveying guide rail is installed on a steel frame of an enamel coating area.

4. The efficient transfer mechanism for enamel coating and sintering processes of an enamel pipe of an air preheater according to claim 1, wherein a plurality of reinforcing brackets are arranged in the middle of the running guide rail.

5. The efficient transfer mechanism for enamel coating and sintering processes of an enamel pipe of an air preheater according to claim 4, wherein the running guide rail is installed on a steel frame through a reinforcing bracket.

6. The efficient transfer mechanism for enamel coating and sintering processes of an enamel pipe of an air preheater according to claim 1, wherein the running guide rail is formed by welding I-steel.

7. The method for operating the enamel pipe enamel and sintering process high-efficiency transfer mechanism for the air preheater as set forth in any one of claims 1-6, comprising the steps of: