CN113337660A

CN113337660A - Flue gas adjusting device

Info

Publication number: CN113337660A
Application number: CN202110587743.3A
Authority: CN
Inventors: 周冰冰; 唐伟杰; 魏伟杰; 吴进福
Original assignee: Shanghai Lalleen Industrial Equipment Co ltd
Current assignee: Shanghai Lalleen Industrial Equipment Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-09-03

Abstract

The invention discloses a flue gas adjusting device in the field of chemical equipment, which comprises a zenith round part and an adjusting mechanism, wherein the adjusting mechanism comprises a shaft seat arranged at the upper end of an inner cavity of the zenith round part, a rotating shaft is rotatably arranged in the shaft seat, a connecting pipe is fixedly arranged in the middle of the rotating shaft, a valve plate is fixedly arranged on the upper end surface of the connecting pipe, an adjusting handle is fixedly arranged on the front end surface of the rotating shaft, a connecting sleeve is fixedly arranged on the upper side of the front end surface of the zenith round part, the part of the front end of the rotating shaft, which extends out of the zenith round part, is rotatably arranged in the connecting sleeve, a locking mechanism is arranged in the connecting sleeve, the flow of two sides of the valve plate can be controlled by adjusting the angle of the valve plate, the non-bias flow of flue gas can be realized, the flow of the flue gas passing through an air preheater and a gas preheater is more uniform, and the aim of enabling the preheating temperature of the air and the gas to accord with the design value is fulfilled.

Description

Flue gas adjusting device

Technical Field

The invention relates to the field of chemical equipment, in particular to a flue gas adjusting device.

Background

The waste heat recovery of the hot blast stove is generally accepted at present, the purposes of saving blast furnace gas and improving the air supply temperature are achieved, the limitation of a field site is met, and the arrangement mode of the plate type preheater is generally divided into integral arrangement and split arrangement.

The integral arrangement of the preheater means that the air preheater and the gas preheater share a hemispherical space, and the flue gas flow of the air preheater and the gas preheater is designed according to the heat of preheated air and gas. Because the flow can not be measured accurately like temperature or pressure in the heat energy engineering, the flow measured by the on-site instrument has deviation and uneven distribution of flue gas flow, thereby leading to the large difference of the preheating temperature of air and coal gas in the actual operation process, if the heat exchange temperature difference of the air or coal gas preheater is large, leading to the low temperature of a flue gas outlet and dewing, leading to the gradual accumulation of dust and impurities in the flue gas in the low-temperature flue gas, if the dust and the impurities are not cleaned in time, blocking a flue gas channel, leading to the aggravation of the flue gas bias flow phenomenon, the flue gas temperature can be adjusted to be higher than the temperature of the air or the coal gas preheater, and the flue gas temperature can be adjusted to be higher than the temperature of the air or the coal gas preheater

Accordingly, the present invention provides a flue gas conditioning device to solve the above problems in the background art.

Disclosure of Invention

The present invention aims to provide a flue gas conditioning device to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a flue gas adjusting device, includes sky circle place and adjustment mechanism, adjustment mechanism includes the axle bed of the local inner chamber upper end installation of sky circle, the pivot is installed to the axle bed internal rotation, the middle fixed mounting of pivot has the connecting pipe, the up end fixed mounting of connecting pipe has the valve plate, the preceding terminal surface fixed mounting of pivot has the regulation handle, the preceding terminal surface upside fixed mounting of sky circle place has the adapter sleeve, the part that the pivot front end stretches out sky circle place rotates and installs in the adapter sleeve, install locking mechanical system in the adapter sleeve.

As a further scheme of the invention: the reinforced coating angles are welded on the left side and the right side of the joint of the valve plate and the connecting pipe, if the connecting pipe and the valve plate are connected only by welding, the valve plate is easy to fall off due to a small welding contact surface, and the problem is effectively solved by the reinforced coating angles in a special arc shape.

As a still further scheme of the invention: the surface welding of valve plate has the strengthening rib, increases the holistic intensity of valve plate, prevents that the valve plate from appearing crooked in the use.

As a still further scheme of the invention: the locking mechanism comprises a clamping groove formed in the front end of the rotating shaft, a sliding barrel arranged on the right side of the front end of the connecting pipe and a clamping block slidably mounted in the sliding barrel, the clamping block is clamped with the clamping groove, the rotating shaft is locked through clamping of the clamping block and the clamping groove, and the rotating shaft is prevented from rotating.

As a still further scheme of the invention: the right-hand member fixed mounting of draw-in groove has adjusting screw and spring, the round hole has been seted up to the right-hand member face of smooth section of thick bamboo, adjusting screw slidable mounting is in the round hole, adjusting screw's right-hand member stretches out sleeve threaded connection and has adjusting nut, and when the pivot was rotated to needs, we can rotate adjusting nut, adjusting nut and adjusting screw threaded connection, again because adjusting screw and the right-hand member fixed connection of fixture block, so adjusting screw just can the horizontal slip when adjusting nut rotates, just so can come to stimulate the fixture block and remove about the fixture block through adjusting screw, make the fixture block can break away from the block with the draw-in groove.

As a still further scheme of the invention: the flue gas adjusting device is applied to a dome place shared by the plate heat exchangers.

As a still further scheme of the invention: a flue gas baffle is fixedly mounted in the inner cavity of the round sky and square earth, and secondary mixing of flue gas after passing through the adjusting device is avoided, so that the flue gas adjusting effect is poor.

As a still further scheme of the invention: the size of the rotating shaft and the valve plate can be adjusted according to actual working conditions, and the actual shape and size of the rotating shaft and the valve plate can be optimized.

Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

through when plate heat exchanger overall arrangement, set up flue gas adjusting device in the sky circle place, valve plate among the adjusting device can carry out angle modulation, just can control the flow of valve plate both sides through the angle of adjusting the valve plate, can realize the flue gas and not bias current, guarantee that the flow that the flue gas passes through air heater and coal gas preheater is more even, reach the purpose that air and coal gas preheating temperature accord with the design value, simultaneously can not be great because of air or coal gas heat transfer difference in temperature, cause air heater or coal gas preheater exhanst gas outlet temperature low and dewfall.

Drawings

FIG. 1 is a schematic diagram of the general structure of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic cross-sectional view of the slide cartridge of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 3;

fig. 5 is a schematic structural diagram of an adjusting mechanism in the present invention.

In the figure: 1-hemispherical square, 2-shaft seat, 3-rotating shaft, 4-connecting pipe, 5-valve plate, 6-adjusting handle, 7-connecting sleeve, 8-reinforcing coating angle, 9-reinforcing rib, 10-clamping groove, 11-sliding cylinder, 12-clamping block, 13-adjusting screw, 14-spring, 15-adjusting nut and 16-smoke baffle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 to 5, in an embodiment of the present invention, a flue gas adjusting device includes a hemispherical dome 1 and an adjusting mechanism, the adjusting mechanism includes a shaft seat 2 installed at an upper end of an inner cavity of the hemispherical dome 1, a rotating shaft 3 is rotatably installed in the shaft seat 2, a connecting pipe 4 is fixedly installed in a middle of the rotating shaft 3, a valve plate 5 is fixedly installed on an upper end surface of the connecting pipe 4, an adjusting handle 6 is fixedly installed on a front end surface of the rotating shaft 3, a connecting sleeve 7 is fixedly installed on an upper side of a front end surface of the hemispherical dome 1, a portion of a front end of the rotating shaft 3 extending out of the hemispherical dome 1 is rotatably installed in the connecting sleeve 7, and a locking mechanism is installed in the connecting sleeve 7.

In this embodiment, all the welding of the junction left and right sides of valve plate 5 and connecting pipe 4 has strengthened cladding angle 8, and if connecting pipe 4 and valve plate 5's connection only leaned on welded connection, because the welding contact surface is little, drops easily, and cladding angle 8 is strengthened to special arc effectively solves this problem.

In this embodiment, the welded surface of valve plate 5 has strengthening rib 9, increases the holistic intensity of valve plate 5, prevents that valve plate 5 from appearing crooked in the use.

In this embodiment, the locking mechanism includes a clamping groove 10 formed in the front end of the rotating shaft 3, a sliding barrel 11 on the right side of the front end of the connecting pipe 4, and a clamping block 12 slidably mounted in the sliding barrel 11, and the clamping block 12 is clamped with the clamping groove 10, so that the rotating shaft 3 is locked by the clamping block 12 and the clamping groove 10, and the rotating shaft 3 is prevented from rotating.

In this embodiment, the right-hand member fixed mounting of draw-in groove 10 has adjusting screw 13 and spring 14, the round hole has been seted up to the right-hand member face of slide cartridge 11, adjusting screw 13 slidable mounting is in the round hole, adjusting screw 13's right-hand member stretches out sleeve threaded connection and has adjusting nut 15, when needs rotate pivot 3, we can rotate adjusting nut 15, adjusting nut 15 and adjusting screw 13 threaded connection, again because adjusting screw 13 and fixture block 12's right-hand member fixed connection, so adjusting screw 13 just can only the horizontal slip when adjusting nut 15 rotates, just so can come the pulling fixture block 12 to remove through adjusting screw 13 and remove, make fixture block 12 can break away from the block with draw-in groove 10.

In this embodiment, the flue gas adjusting device is applied to the dome 1 shared by the plate heat exchangers.

In this embodiment, the flue gas baffle 16 is fixedly installed to the sky circle place 1 inner chamber, avoids flue gas to pass through adjusting device back secondary and mixes for flue gas conditioning effect is not good.

In this embodiment, the size of pivot 3 and valve plate 5 is adjusted according to actual conditions, and its actual shape and size can all be optimized.

The working principle of the invention is as follows:

when the plate heat exchanger is integrally arranged, the smoke adjusting device is arranged in the hemispherical dome 1, the flow on the two sides of the valve plate 5 can be controlled by rotating the valve plate 5, the flue gas flow of a single side can be adjusted from zero to the maximum flue gas amount, thereby fundamentally realizing the arbitrary adjustment of the flue gas flow, before adjusting the angle of the valve plate 5, the clamping block 12 in the sliding cylinder 11 is disengaged from the clamping groove 10 on the surface of the rotating shaft 3, the rotating shaft 3 is locked by the contact clamping block 12, then the rotating shaft 3 is rotated by the adjusting handle 6, the rotating shaft 3 drives the connecting pipe 4 and the valve plate 5 to rotate, after the angle of the valve plate 5 is adjusted, firstly, the clamping block 12 is clamped with the clamping groove 10 without loosening the adjusting handle 6, the rotating shaft 3 is locked through the clamping block 12, then the adjusting handle 6 is released again, so that the rotating shaft 3 and the valve plate 5 are fixed at the current angle.

Claims

1. The utility model provides a flue gas adjusting device, includes sky circle place (1) and adjustment mechanism, its characterized in that: adjustment mechanism includes axle bed (2) of the local (1) inner chamber upper end installation of sky circle, pivot (3) are installed to axle bed (2) internal rotation, the centre fixed mounting of pivot (3) has connecting pipe (4), the up end fixed mounting of connecting pipe (4) has valve plate (5), the preceding terminal surface fixed mounting of pivot (3) has regulation handle (6), the preceding terminal surface upside fixed mounting of the local (1) of sky circle has adapter sleeve (7), the part that the local (1) of sky circle was stretched out to pivot (3) front end rotates and installs in adapter sleeve (7), install locking mechanical system in adapter sleeve (7).

2. A flue gas conditioning device according to claim 1, characterized in that: and reinforced coating angles (8) are welded on the left side and the right side of the joint of the valve plate (5) and the connecting pipe (4).

3. A flue gas conditioning device according to claim 1, characterized in that: the surface of the valve plate (5) is welded with a reinforcing rib (9).

4. A flue gas conditioning device according to claim 1, characterized in that: the locking mechanism comprises a clamping groove (10) formed in the front end of the rotating shaft (3), a sliding barrel (11) on the right side of the front end of the connecting pipe (4) and a clamping block (12) installed in the sliding barrel (11) in a sliding mode, and the clamping block (12) is clamped with the clamping groove (10).

5. A flue gas conditioning device according to claim 4, characterized in that: the right-hand member fixed mounting of draw-in groove (10) has adjusting screw (13) and spring (14), the round hole has been seted up to the right-hand member face of slide cartridge (11), adjusting screw (13) slidable mounting is in the round hole, the right-hand member of adjusting screw (13) stretches out sleeve threaded connection and has adjusting nut (15).

6. A flue gas conditioning device according to claim 1, characterized in that: the flue gas adjusting device is applied to a common dome (1) of the plate heat exchanger.

7. A flue gas conditioning device according to claim 1, characterized in that: and a smoke baffle (16) is fixedly arranged in the inner cavity of the skyline square (1).

8. A flue gas conditioning device according to claim 1, characterized in that: the sizes of the rotating shaft (3) and the valve plate (5) can be adjusted according to actual working conditions, and the actual shapes and sizes of the rotating shaft and the valve plate can be optimized.