CN211822467U

CN211822467U - Flue gas heat exchanger auto-change over device suitable for two boilers

Info

Publication number: CN211822467U
Application number: CN202020426191.9U
Authority: CN
Inventors: 李刚; 张玉斌; 蒋海涛; 林科; 张星
Original assignee: Shandong Boran Power Technology Co ltd
Current assignee: Shandong Boran Power Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-30
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to a gas heater technical field, and a gas heater auto-change over device suitable for two boilers is disclosed, include the base and the backup pad that is located the base top, four support columns that are the matrix distribution of fixedly connected with between base and the backup pad, the last surface symmetry fixed mounting of base has first desulfurizing tower and second desulfurizing tower, the last surface symmetry fixed mounting of backup pad has first boiler and second boiler, the equal fixed intercommunication of first boiler and second boiler has first pipeline, the other end of first pipeline has the second pipeline through flue gas processing mechanism intercommunication, and first pipeline is the same with second pipeline structure, the fixed intercommunication of the other end of second pipeline has gas heater, the equal fixed intercommunication of first desulfurizing tower and second desulfurizing tower has the third pipeline. The utility model discloses make flue gas heat exchanger auto-change over device's pipeline possess flue gas filtering capability, effectively avoid impurity to get into in the flue gas heat exchanger to improve flue gas heat exchanger's life.

Description

Flue gas heat exchanger auto-change over device suitable for two boilers

Technical Field

The utility model relates to a gas heater technical field especially relates to a gas heater auto-change over device suitable for two boilers.

Background

With the continuous development of domestic economy, most domestic boiler manufacturers currently adopt one-use one-standby boiler or a plurality of boilers to operate simultaneously in order to ensure the normal use of downstream users of the boilers. The matched flue gas heat exchangers are also configured according to each boiler. Therefore, two sets of flue gas heat exchangers are required to be configured for two boilers with the same model, and the two sets of flue gas heat exchangers cannot be used mutually, so that great resource waste is caused.

In the patent with the Chinese patent No. CN110056897A, a flue gas heat exchanger switching device suitable for two boilers is disclosed, when in use, one flue gas heat exchanger can be shared by the two boilers through reasonable arrangement of parts in a main flue, any one of the boilers can operate, when the other boiler is standby, one flue gas heat exchanger can be shared for heat exchange and heat exchange through adjusting a flue gate valve, the use efficiency of the flue gas heat exchanger can be improved, the equipment investment is reduced, aiming at the operation of different boilers, the liquid flow direction in the heat exchanger can be changed according to the change of the flue gas flow direction at the flue gas side, the countercurrent heat exchange of the flue gas and a liquid medium in the heat exchange pipe is ensured, and the heat exchange efficiency of the equipment can be improved; however, the scheme still has the following defects:

the pipeline of intercommunication does not possess the dirt function of straining between boiler and the gas heater, and the flue gas that the boiler produced contains a large amount of dust impurity, directly gets into gas heater and easily leads to the heat exchanger to break down, influences the result of use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art flue gas heat exchanger auto-change over device's pipeline and not possessing flue gas filtering capability, easily leading to the problem that the heat exchanger broke down, and the flue gas heat exchanger auto-change over device who is applicable to two boilers who proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flue gas heat exchanger switching device suitable for two boilers comprises a base and a supporting plate positioned above the base, four support columns which are distributed in a matrix shape are fixedly connected between the base and the support plate, a first desulfurizing tower and a second desulfurizing tower are symmetrically and fixedly arranged on the upper surface of the base, a first boiler and a second boiler are symmetrically and fixedly arranged on the upper surface of the supporting plate, the first boiler and the second boiler are both fixedly communicated with a first pipeline, the other end of the first pipeline is communicated with a second pipeline through a flue gas treatment mechanism, the first pipeline and the second pipeline have the same structure, the other end of the second pipeline is fixedly communicated with a flue gas heat exchanger, the first desulfurizing tower and the second desulfurizing tower are both fixedly communicated with third pipelines, the other ends of the third pipelines are both communicated with a flue gas heat exchanger, a first flue gate valve and a second flue gate valve are fixedly arranged on the two third pipelines respectively;

the flue gas treatment mechanism includes that the common cover establishes the runner on first pipeline and second pipeline, the runner is close to all seted up annular spout on the interior pipe wall at both ends, equal symmetrical fixedly connected with and annular spout sliding connection's slider on the outer pipe wall of first pipeline and second pipeline, all fixed cup joint on the outer pipe wall of first pipeline and second pipeline end in opposite directions with runner assorted sealing plug, the inside center department fixed mounting of runner has the annular filter screen that matches, the edge equal symmetrical fixedly connected with arch of first pipeline and second pipeline end in opposite directions, two the common fixedly connected with brush-holder stud of bellied other end, the brush-holder stud is far away from bellied one side fixed mounting and is had the brush hair of laminating mutually with annular filter screen.

Preferably, the bottom of the rotating pipe is fixedly communicated with a dust exhaust pipe, and the bottom end of the dust exhaust pipe is in threaded connection with a matched sealing cover.

Preferably, a ball groove is formed in one side, close to the bottom of the annular sliding groove, of the sliding block, a ball is installed in the ball groove, one end, far away from the bottom of the ball groove, of the ball penetrates through a groove opening of the ball groove and extends outwards, and the ball is connected to the bottom of the annular sliding groove in a rolling mode.

Preferably, handles are symmetrically and fixedly connected to the outer pipe wall of the rotating pipe close to the end portion.

Preferably, a matched sealing ring is arranged at the joint of the sealing cover and the dust exhaust pipe.

Preferably, the outer side wall of the handle is provided with anti-skid grains.

Compared with the prior art, the utility model provides a gas heater auto-change over device suitable for two boilers possesses following beneficial effect:

this gas heater auto-change over device suitable for two boilers, through setting up first desulfurizing tower, the second desulfurizing tower, first boiler, the second boiler, first pipeline, the second pipeline, flue gas treatment mechanism, gas heater, the third pipeline, first flue slide valve and second flue slide valve, through the on-off state who switches first flue slide valve and second flue slide valve, can make one set of gas heater of first boiler and second boiler sharing, thereby effectively reduce the equipment investment, flue gas treatment mechanism between first pipeline and the second pipeline, can carry out effective filtration to the dust impurity in the boiler flue gas and block, thereby avoid in dust impurity gets into gas heater and influence its life.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make flue gas heat exchanger auto-change over device's pipeline possess flue gas filtering capability, effectively avoid impurity to get into in the flue gas heat exchanger to improve flue gas heat exchanger's life.

Drawings

Fig. 1 is a schematic structural view of a flue gas heat exchanger switching device suitable for two boilers, which is provided by the present invention;

fig. 2 is a schematic structural view of a connection part of a first pipeline and a second pipeline of a flue gas heat exchanger switching device suitable for two boilers, which is provided by the utility model;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the device comprises a base 1, a supporting plate 2, a supporting column 3, a first desulfurizing tower 4, a second desulfurizing tower 5, a first boiler 6, a second boiler 7, a first pipeline 8, a second pipeline 9, a flue gas heat exchanger 10, a third pipeline 11, a first flue gate valve 12, a second flue gate valve 13, a rotating pipe 14, an annular sliding groove 15, a sliding block 16, a sealing plug 17, an annular filtering net 18, a bulge 19, a brush rod 20, a dust exhaust pipe 21, a sealing cover 22, a ball groove 23, a ball 24, a handle 25 and an anti-slip pattern 26.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a flue gas heat exchanger switching device suitable for two boilers comprises a base 1 and a support plate 2 located above the base 1, four support columns 3 distributed in a matrix are fixedly connected between the base 1 and the support plate 2, a first desulfurizing tower 4 and a second desulfurizing tower 5 are symmetrically and fixedly installed on the upper surface of the base 1, a first boiler 6 and a second boiler 7 are symmetrically and fixedly installed on the upper surface of the support plate 2, the first boiler 6 and the second boiler 7 are fixedly communicated with a first pipeline 8, the other end of the first pipeline 8 is communicated with a second pipeline 9 through a flue gas treatment mechanism, the first pipeline 8 and the second pipeline 9 have the same structure, the other end of the second pipeline 9 is fixedly communicated with a flue gas heat exchanger 10, the first desulfurizing tower 4 and the second desulfurizing tower 5 are fixedly communicated with a third pipeline 11, the other ends of the two third pipelines 11 are communicated with the flue gas heat exchanger 10, a first flue gate valve 12 and a second flue gate valve 13 are respectively and fixedly arranged on the two third pipelines 11;

the flue gas treatment mechanism comprises a rotating pipe 14 which is sleeved on a first pipeline 8 and a second pipeline 9 together, annular chutes 15 are arranged on the inner pipe walls of the rotating pipe 14 close to the two ends, sliders 16 which are connected with the annular chutes 15 in a sliding manner are symmetrically and fixedly connected on the outer pipe walls of the first pipeline 8 and the second pipeline 9, sealing plugs 17 matched with the rotating pipe 14 are fixedly sleeved on the outer pipe walls of the opposite ends of the first pipeline 8 and the second pipeline 9, matched annular filter screens 18 are fixedly arranged at the center inside the rotating pipe 14, bulges 19 are symmetrically and fixedly connected on the edges of the opposite ends of the first pipeline 8 and the second pipeline 9, brush rods 20 are fixedly connected at the other ends of the two bulges 19 together, bristles which are jointed with the annular filter screens 18 are fixedly arranged on one side of the brush rods 20 far away from the bulges 19, and the opening and closing states of the first flue gate valve 12 and the second flue gate valve 13 are switched, can make one set of gas heater 10 of first boiler 6 and second boiler 7 sharing, thereby effectively reduce the equipment investment, the boiler flue gas gets into in the trombone 14 via first pipeline 8, impurity in the flue gas is conveniently filtered through annular filter screen 18, flue gas after the filtration gets into gas heater 10 via second pipeline 9, thereby effectively avoid dust impurity in the boiler flue gas to get into in gas heater 10 and influence its life, sealing plug 17 on first pipeline 8 and the second pipeline 9, can effectively guarantee the leakproofness of pipe connection, rotate the trombone 14, make and take place relative slip between slider 16 and the annular spout 15, brush hair convenience on through brush-holder stud 20 is cleaned annular filter screen 18 comprehensively, thereby avoid annular filter screen 18 to take place to block up, and then effectively improve gas filtration efficiency.

The bottom of the rotating pipe 14 is fixedly communicated with a dust exhaust pipe 21, the bottom end position of the dust exhaust pipe 21 is in threaded connection with a matched sealing cover 22, the sealing cover 22 in threaded connection is opened, and dust is conveniently discharged out of the rotating pipe 14 through the dust exhaust pipe 21.

The ball groove 23 has been seted up to the slider 16 one side that is close to annular spout 15 tank bottom, and installs ball 24 in the ball groove 23, and ball 24 is kept away from the one end of ball groove 23 tank bottom and is passed the notch of ball groove 23 and outwards extend, and roll connection is at the tank bottom of annular spout 15, reduces the frictional force between slider 16 and the annular spout 15.

The outer tube wall of the rotary tube 14 near the end is symmetrically and fixedly connected with handles 25, which is convenient for driving the rotary tube 14 to rotate.

The sealing cover 22 is provided with a matched sealing ring at the joint with the dust exhaust pipe 21, so that the sealing performance of the joint is ensured.

The outer side wall of the handle 25 is provided with anti-slip lines 26, so that the adhesive force of the hand is increased, and slipping is avoided.

In the utility model, the first boiler 6 and the second boiler 7 can share one set of flue gas heat exchanger 10 by switching the open and close states of the first flue gate valve 12 and the second flue gate valve 13, thereby effectively reducing the equipment investment, the boiler flue gas enters the rotary pipe 14 through the first pipeline 8, the impurities in the flue gas are conveniently filtered through the annular filter screen 18, the filtered flue gas enters the flue gas heat exchanger 10 through the second pipeline 9, thereby effectively avoiding the dust impurities in the boiler flue gas from entering the flue gas heat exchanger 10 and affecting the service life thereof, the sealing plugs 17 on the first pipeline 8 and the second pipeline 9 can effectively ensure the sealing performance of the pipeline connection, the rotary pipe 14 is rotated, the sliding between the slider 16 and the annular chute 15 is relatively generated, the annular filter screen 18 is conveniently and comprehensively cleaned through the brush hair on the brush rod 20, thereby avoiding the annular filter screen 18 from being blocked, thereby effectively improving the smoke filtering efficiency.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A flue gas heat exchanger switching device suitable for two boilers comprises a base (1) and a supporting plate (2) located above the base (1), and is characterized in that four supporting columns (3) distributed in a matrix manner are fixedly connected between the base (1) and the supporting plate (2), a first desulfurizing tower (4) and a second desulfurizing tower (5) are symmetrically and fixedly installed on the upper surface of the base (1), a first boiler (6) and a second boiler (7) are symmetrically and fixedly installed on the upper surface of the supporting plate (2), the first boiler (6) and the second boiler (7) are fixedly communicated with a first pipeline (8), the other end of the first pipeline (8) is communicated with a second pipeline (9) through a flue gas treatment mechanism, the first pipeline (8) and the second pipeline (9) are identical in structure, the other end of the second pipeline (9) is fixedly communicated with a flue gas heat exchanger (10), the first desulfurization tower (4) and the second desulfurization tower (5) are fixedly communicated with third pipelines (11), the other ends of the two third pipelines (11) are communicated with a flue gas heat exchanger (10), and a first flue gate valve (12) and a second flue gate valve (13) are fixedly mounted on the two third pipelines (11) respectively;

the flue gas treatment mechanism comprises a rotating pipe (14) which is sleeved on a first pipeline (8) and a second pipeline (9) together, wherein the rotating pipe (14) is close to inner pipe walls at two ends and is provided with an annular sliding groove (15), the outer pipe walls of the first pipeline (8) and the second pipeline (9) are symmetrically and fixedly connected with a sliding block (16) in sliding connection with the annular sliding groove (15), the outer pipe walls of opposite ends of the first pipeline (8) and the second pipeline (9) are fixedly sleeved with a sealing plug (17) matched with the rotating pipe (14), the center of the inner part of the rotating pipe (14) is fixedly provided with a matched annular filter screen (18), the edges of opposite ends of the first pipeline (8) and the second pipeline (9) are symmetrically and fixedly connected with bulges (19), the other ends of the bulges (19) are fixedly connected with a brush rod (20) together, one side of the brush rod (20) far away from the bulges (19) is fixedly provided with a brush rod which is attached to the annular filter screen (18) The bristles of (1).

2. The flue gas heat exchanger switching device applicable to two boilers as claimed in claim 1, wherein a dust exhaust pipe (21) is fixedly communicated with the bottom of the rotating pipe (14), and a matched sealing cover (22) is connected to the bottom end of the dust exhaust pipe (21) in a threaded manner.

3. The flue gas heat exchanger switching device suitable for two boilers is characterized in that a ball groove (23) is formed in one side, close to the groove bottom of the annular sliding groove (15), of the sliding block (16), a ball (24) is installed in the ball groove (23), one end, far away from the groove bottom of the ball groove (23), of the ball (24) penetrates through the groove opening of the ball groove (23) and extends outwards, and the ball is connected to the groove bottom of the annular sliding groove (15) in a rolling mode.

4. The flue gas heat exchanger switching device for two boilers as claimed in claim 1, wherein the outer pipe wall of the rotary pipe (14) near the end is symmetrically and fixedly connected with a handle (25).

5. The flue gas heat exchanger switching device applicable to two boilers is characterized in that the joint of the sealing cover (22) and the dust exhaust pipe (21) is provided with a matched sealing ring.

6. The flue gas heat exchanger switching device suitable for two boilers as claimed in claim 4, wherein the outer side wall of the handle (25) is provided with anti-skid threads (26).