CN111006521B

CN111006521B - Anti-blocking economizer structure

Info

Publication number: CN111006521B
Application number: CN201911223754.2A
Authority: CN
Inventors: 周涛; 张薇; 孙启国; 孔祥泉; 张伟; 张誓争; 杨磊
Original assignee: Shandong Wangchao Coal And Electricity Group Xinneng Power Generation Co ltd
Current assignee: Shandong Wangchao Coal And Electricity Group Xinneng Power Generation Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2021-04-27
Anticipated expiration: 2039-12-04
Also published as: CN111006521A

Abstract

The invention discloses a novel anti-blocking economizer structure, which comprises a shell, a flue gas conveying pipe, a distribution pipe, a water inlet main pipe, a water outlet main pipe, a flue gas outlet pipe, a heat exchange water pipe and a communicating pipe, the flue gas conveying pipe is connected with a distribution pipe through an elbow, the flue gas conveying pipe is connected with a flue at the tail part of the boiler, a quick dredging pipe is welded at the lower part of the elbow at the tail end of the flue gas conveying pipe, the distribution pipe extends into the shell, the top of the distribution pipe is designed in a plugging mode, a plurality of communicating pipes are welded on the distribution pipe and distributed at equal intervals along the vertical direction of the distribution pipe, the tail ends of the communicating pipes are connected with the flue gas outlet pipe, and the flue gas outlet pipe is positioned in the shell, one end of the flue gas outlet pipe is designed to be blocked, the other end of the flue gas outlet pipe is connected with the chimney, the flue gas is discharged through the chimney, a water inlet main pipe is arranged on one side of the outside of the shell, and a water outlet main pipe is arranged on the other side of the outside of the shell. The invention has reasonable design; thereby the design of many communicating pipes can use quantity as required carries out different heat exchanges.

Description

Anti-blocking economizer structure

Technical Field

The invention relates to a novel anti-blocking economizer structure.

Background

Coal is the conventional energy with the largest reserve and the widest distribution in the world and the cheapest energy, and the storage amount of coal in northern China is large, so that coal plays an important role in northern China, in order to convert the energy of the coal into the energy required by people, people mostly adopt boilers to combust the coal to generate steam, various operations are carried out by utilizing the steam, the coal combustion can generate a large amount of flue gas, the temperature of the flue gas is also high, if the flue gas is directly discharged to waste a large amount of energy, the concept of energy conservation and emission reduction is not met, the heat of high-temperature flue gas discharged from the boilers is absorbed by utilizing the coal economizer, the effects of saving energy and improving efficiency are achieved, the existing economizer can be blocked in the using process, and the production is influenced when the blockage occurs and is not easy to process.

Disclosure of Invention

The invention aims to provide a novel anti-blocking economizer structure to solve the technical problems.

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

a novel anti-blocking economizer structure comprises a shell, a flue gas conveying pipe, a distributing pipe, a water inlet main pipe, a water outlet main pipe, a flue gas outlet pipe, a heat exchange water pipe and communicating pipes, wherein the flue gas conveying pipe is connected with the distributing pipe through an elbow, the flue gas conveying pipe is connected with a flue at the tail part of a boiler, the lower part of the elbow at the tail end of the flue gas conveying pipe is welded with a quick dredging pipe, the distributing pipe extends into the shell, the top of the distributing pipe is in a blocking type design, a plurality of communicating pipes are welded on the distributing pipe and are distributed equidistantly along the vertical direction of the distributing pipe, the tail end of each communicating pipe is connected with the flue gas outlet pipe, the flue gas outlet pipe is positioned in the shell, one end of the flue gas outlet pipe is in a blocking type design, the other end of the flue gas outlet pipe is connected with a chimney, the, a plurality of heat exchange water pipes are welded on the water inlet main pipe, the heat exchange water pipes are distributed in the shell in a U shape, a connector is arranged at the bending part of each heat exchange water pipe, and the heat exchange water pipes are in contact with the communicating pipe.

Preferably, the connector comprises an upper flange, a lower flange, an outer sealing groove and a splicing ring, elbows are welded on the upper flange and the lower flange, heat exchange water pipes are welded at the tail ends of the elbows, the outer sealing groove is formed in the outer portion of a through hole of the lower flange, the splicing ring is welded on the outer portion of the through hole of the upper flange, the splicing ring is spliced with the outer sealing groove to guarantee the sealing performance of the upper flange after being connected with the lower flange, and the upper flange is connected with the lower flange through bolts.

Preferably, the inner wall of the distribution pipe is provided with a guide rail, the distribution pipe is divided into two parts by a partition plate, the partition plate is connected with the guide rail, the pulling device is installed above the inner wall of the distribution pipe, one end of the pulling device is connected with the partition plate, the other end of the pulling device is connected with a moving block, the moving block is connected with a motor through a chain, the motor is fixed at the top of the distribution pipe through a bolt, and the motor drives the moving block to move so as to drive the partition plate to move up and down.

Preferably, the pulling-up device comprises a movable pulley frame, a fixed pulley frame, a movable pulley, a fixed plate, a support, a sliding rod, a through hole and a pulling rope, wherein the fixed plate is arranged above the inner wall of the distribution pipe through the support, the through hole is formed in the fixed plate, the sliding rod is connected with the fixed plate through the through hole, a limiting rod is welded at the tail end of the sliding rod, the sliding rod far away from one end of the limiting rod is connected with the movable pulley frame, a plurality of movable pulleys are arranged on the movable pulley frame, the movable pulley frame is connected with the fixed pulley frame through an intermediate rod, the fixed pulley is arranged on the fixed pulley frame, the pulling rope is threaded between the movable pulley and the fixed pulley back and forth, one end.

Preferably, the number of the movable pulleys is at least four, the distance between every two adjacent movable pulleys is larger than two times of the diameter of the movable pulleys, the number of the fixed pulleys is at least three, and the distance between every two adjacent fixed pulleys is larger than two times of the diameter of the fixed pulleys.

Preferably, one end of the moving block is provided with a gear installed by a screw, the chain is meshed with a gear on the moving block, the motor is connected with a rotating gear, the rotating gear is meshed with the chain, the top of the distribution pipe is provided with a sliding groove, the moving block is connected with the sliding groove, and the moving block can move left and right along the sliding groove.

Preferably, the both sides welding of baffle has the slider, the slider is connected with the guide rail, install the electro-magnet in the slider, the round hole has been seted up with the slider of electro-magnet on same water flat line, the monolithic stationary who spring and spring post are constituteed is in the round hole, spring and spring post all adopt the iron material to make, the magnetic force that produces after the electro-magnet circular telegram is greater than the elasticity of spring, set up the tooth's socket that increases frictional force on two lateral walls of guide rail, thereby pop out the back and prevent the baffle with the tooth's socket contact when the spring post and remove, be equipped with the pull ring of fix with screw in the center of baffle, the stay cord.

Preferably, the size of the distribution pipe is larger than or equal to two times of the size of the flue gas conveying pipe, a valve is installed on the quick dredging pipe, and the valve is in a normally-closed state.

Preferably, the outer surface of the shell is wrapped by a heat insulation material, and the heat exchange water pipe and the communicating pipe are both made of iron materials.

Compared with the prior art, the invention has the following advantages: the invention has reasonable design; the size of the distribution pipe is larger than that of the flue gas conveying pipe, so that the speed of the flue gas in the distribution pipe is reduced, and after the speed of the flue gas is reduced, large-particle impurities in the flue gas fall down, and the flue gas is quickly dredged by using the quick dredging pipe; the distribution pipes are provided with a plurality of communicating pipes, and when the water in the heat exchange water pipe is high and does not need too much heat, the position of the partition plate is changed by using the motor to reduce the number of the communicating pipes, so that the heat exchange efficiency is reduced; the heat exchange water pipes are mostly blocked at the bending positions, the connectors are arranged at the bending positions, and when the blockage occurs, the connectors can be disassembled for rapid dredging; the design of the movable pulley and the fixed pulley on the pulling-up device not only saves the pulling-up force, but also changes the direction of the pulling rope; when the distribution pipe is blocked, the motor drives the partition plate to move up and down along the distribution pipe through the pull rope, the movable pulley and the fixed pulley to dredge.

Drawings

FIG. 1 is a schematic view of the anti-blocking economizer of the present invention.

FIG. 2 is a schematic view of the casing removal of the anti-blocking economizer of the present invention.

FIG. 3 is an exploded view of the connector of the anti-clogging economizer of the present invention.

FIG. 4 is a schematic view of an upper flange of the anti-blocking economizer of the present invention.

FIG. 5 is a partial schematic view of the distribution pipe of the anti-blocking economizer of the present invention.

FIG. 6 is a schematic view of a rope puller of the anti-blocking economizer of the present invention.

FIG. 7 is a schematic view of a lifter, a partition plate and a moving block of the anti-blocking economizer of the present invention.

FIG. 8 is a schematic diagram of a moving block and a motor of the anti-blocking economizer of the present invention.

FIG. 9 is a schematic view of a partition plate of the anti-blocking economizer of the present invention.

Detailed Description

The invention is explained in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1-9, a novel anti-blocking economizer structure comprises a casing 1, a flue gas conveying pipe 2, a distribution pipe 3, a water inlet main pipe 4, a water outlet main pipe 5, a flue gas outlet pipe 9, a heat exchange water pipe 7 and a communicating pipe 32, and is characterized in that the flue gas conveying pipe 2 is connected with the distribution pipe 3 through an elbow, the flue gas conveying pipe 2 is connected with a tail flue of a boiler, a quick dredging pipe 6 is welded at the lower part of the elbow at the tail end of the flue gas conveying pipe 2, the size of the distribution pipe is more than or equal to twice that of the flue gas conveying pipe, a valve is installed on the quick dredging pipe and is in a normally closed state, the distribution pipe 3 extends into the casing 1, the top of the distribution pipe 3 is in a blocking type design, a plurality of communicating pipes 32 are welded on the distribution pipe 3, the communicating pipes 32 are, and the flue gas outlet pipe 9 is located in the shell 1, one end of the flue gas outlet pipe 9 is designed to be blocked, the other end is connected with a chimney, the flue gas is discharged through the chimney, one side of the outside of the shell 1 is provided with a water inlet header pipe 4, the other side of the outside of the shell 1 is provided with a water outlet header pipe 5, the water outlet header pipe 5 sends the water after heat exchange to a required position, the water inlet header pipe 4 is welded with a plurality of heat exchange water pipes 7, the heat exchange water pipes 7 are distributed in the shell 1 in a U shape, a connector 8 is arranged at the bending part of the heat exchange water pipes 7, the heat exchange water pipes 7 are contacted with a communicating pipe 32, the outer surface of the shell is wrapped with a heat insulation material, the heat exchange water pipes and the communicating pipe are both made of iron material, the connector 8 comprises an upper flange 10, a lower flange 11, an outer sealing groove 12 and a splicing ring 13, elbows are welded on the upper flange 10 and the, the outer part of the through hole of the upper flange 10 is welded with an inserting ring 13, the inserting ring 13 is inserted into an outer sealing groove 12 to ensure the sealing performance after the upper flange 10 is connected with the lower flange 11, the inner wall of the distribution pipe 3 is provided with a guide rail 14, the distribution pipe 3 is divided into two parts by a partition plate 16, the partition plate 16 is connected with the guide rail 14, a pulling-up device 17 is arranged above the inner wall of the distribution pipe 3, one end of the pulling-up device 17 is connected with the partition plate 16, the other end of the pulling-up device 17 is connected with a moving block 30, the moving block 30 is connected with a motor 15 through a chain 31, the motor 15 is fixed at the top of the distribution pipe 3 through bolts, the moving block 30 is driven by the motor 15 to move so as to drive the partition plate 16 to move up and down, the pulling-up device 17 comprises a moving pulley frame 19, a fixed pulley frame 18, a moving pulley 22, a fixed, The fixed plate 27 is mounted above the inner wall of the distribution pipe 3 through a support 26, the fixed plate 27 is provided with a through hole 25, a slide rod 24 is connected with the fixed plate 27 through the through hole 25, the tail end of the slide rod 24 is welded with a limiting rod 28, the slide rod 24 at one end far away from the limiting rod 28 is connected with a movable pulley frame 19, the movable pulley frame 19 is provided with a plurality of movable pulleys 22, the movable pulley frame 19 is connected with a fixed pulley frame 18 through an intermediate rod 20, the fixed pulleys 21 are mounted on the fixed pulley frame 18, the pull rope 23 passes between the movable pulleys 22 and the fixed pulleys 21 back and forth, one end of the pull rope 23 is connected with a partition plate 16, the other end of the pull rope 23 is connected with a movable block 30, at least four movable pulleys 22 are provided, the distance between two adjacent movable pulleys 22 is larger than twice the diameter of the movable pulleys 22, at least three fixed pulleys 21 are provided, and, one end of the moving block 30 is provided with a gear installed by a screw, the chain 31 is meshed with a gear on the moving block 30, the motor 15 is connected with a rotating gear, the rotating gear is meshed with the chain 31, the top of the distribution pipe 3 is provided with a chute 33, the moving block 30 is connected with the chute 33, the moving block 30 can move left and right along the chute 33, two sides of the partition plate 16 are welded with sliding blocks 34, the sliding blocks 34 are connected with the guide rail 14, an electromagnet is installed in each sliding block 34, a circular hole is formed in each sliding block 34 which is on the same horizontal line with the electromagnet, the whole formed by the spring 35 and the bouncing column 36 is fixed in the circular hole, the spring 35 and the bouncing column 36 are both made of iron materials, the magnetic force generated after the electromagnet is electrified is larger than the elastic force of the spring 35, two side walls of the guide rail 14 are provided with tooth grooves 37 for increasing the friction force, the pull rope 23 is tied on the pull ring 29, and the electromagnet is controlled by the PLC to be powered on or powered off.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.

Claims

1. The utility model provides a prevent stifled economizer structure, includes casing (1), flue gas conveyer pipe (2), distributing pipe (3), water inlet manifold (4), water outlet manifold (5), flue gas outlet pipe (9), heat transfer water pipe (7), communicating pipe (32), its characterized in that, flue gas conveyer pipe (2) are connected with distributing pipe (3) through the elbow, and flue gas conveyer pipe (2) are connected with boiler afterbody flue, and the welding of the elbow lower part of flue gas conveyer pipe (2) end has fast dredging pipe (6), distributing pipe (3) extend to in casing (1), and the top of distributing pipe (3) is the design of shutoff formula, and the welding has many communicating pipe (32) on distributing pipe (3), and communicating pipe (32) distribute along the vertical direction equidistance of distributing pipe (3), and the end and the flue gas outlet pipe (9) of communicating pipe (32) are connected, and flue gas outlet pipe (9) are located casing (1), one end of a flue gas outlet pipe (9) is designed to be plugged, the other end of the flue gas outlet pipe is connected with a chimney, flue gas is discharged through the chimney, a water inlet header pipe (4) is arranged on one side of the outside of the shell (1), a water outlet header pipe (5) is arranged on the other side of the outside of the shell (1), the water after heat exchange is sent to a required position by the water outlet header pipe (5), a plurality of heat exchange water pipes (7) are welded on the water inlet header pipe (4), the heat exchange water pipes (7) are distributed in the shell (1) in a U shape, a connector (8) is arranged at the bending part of each heat exchange water pipe (7), and the heat exchange water pipes (7) are in contact with;

the inner wall of the distribution pipe (3) is provided with a guide rail (14), the distribution pipe (3) is divided into two parts by a partition plate (16), the partition plate (16) is connected with the guide rail (14), a pulling-up device (17) is installed above the inner wall of the distribution pipe (3), one end of the pulling-up device (17) is connected with the partition plate (16), the other end of the pulling-up device (17) is connected with a moving block (30), the moving block (30) is connected with a motor (15) through a chain (31), the motor (15) is fixed to the top of the distribution pipe (3) through a bolt, and the moving block (30) is driven by the motor (15) to move so as to drive the partition plate (16) to move up and; the pulling-up device (17) comprises a movable pulley frame (19), a fixed pulley frame (18), a movable pulley (22), a fixed pulley (21), a fixed plate (27), a support (26), a sliding rod (24), a through hole (25) and a pull rope (23), wherein the fixed plate (27) is installed above the inner wall of the distribution pipe (3) through the support (26), the through hole (25) is formed in the fixed plate (27), the sliding rod (24) is connected with the fixed plate (27) through the through hole (25), a limiting rod (28) is welded at the tail end of the sliding rod (24), the sliding rod (24) far away from one end of the limiting rod (28) is connected with the movable pulley frame (19), a plurality of movable pulleys (22) are arranged on the movable pulley frame (19), the movable pulley frame (19) is connected with the fixed pulley frame (18) through an intermediate rod (20), the fixed pulley (21) is installed on the fixed pulley frame (18), and the pull rope (23) is repeatedly penetrated on, One end of a pull rope (23) is connected with the clapboard (16) between the fixed pulleys (21), and the other end of the pull rope (23) is connected with the moving block (30).

2. The anti-blocking economizer structure according to claim 1, wherein the connector (8) comprises an upper flange (10), a lower flange (11), an outer sealing groove (12) and an inserting ring (13), elbows are welded on the upper flange (10) and the lower flange (11), heat exchange water pipes (7) are welded at the tail ends of the elbows, the outer sealing groove (12) is formed outside a through hole of the lower flange (11), the inserting ring (13) is welded outside the through hole of the upper flange (10), the inserting ring (13) is inserted into the outer sealing groove (12) to ensure the sealing performance of the upper flange (10) and the lower flange (11) after connection, and the upper flange (10) is connected with the lower flange (11) through bolts.

3. The anti-blocking economizer structure according to claim 1, wherein the number of the movable pulleys (22) is at least four, the distance between two adjacent movable pulleys (22) is more than twice the diameter of the movable pulleys (22), the number of the fixed pulleys (21) is at least three, and the distance between two adjacent fixed pulleys (21) is more than twice the diameter of the fixed pulleys (21).

4. The anti-blocking economizer structure according to claim 1, wherein one end of the moving block (30) is provided with a gear mounted by a screw, the chain (31) is meshed with the gear on the moving block (30), the motor (15) is connected with a rotating gear, the rotating gear is meshed with the chain (31), the top of the distribution pipe (3) is provided with a chute (33), the moving block (30) is connected with the chute (33), and the moving block (30) can move left and right along the chute (33).

5. The anti-blocking economizer structure according to claim 1, wherein sliders (34) are welded to two sides of the partition plate (16), the sliders (34) are connected with the guide rail (14), an electromagnet is installed in each slider (34), a circular hole is formed in each slider (34) on the same horizontal line with the electromagnet, a whole formed by a spring (35) and a bouncing post (36) is fixed in the circular hole, the spring (35) and the bouncing post (36) are made of iron materials, magnetic force generated after the electromagnet is electrified is larger than elastic force of the spring (35), tooth grooves (37) for increasing friction force are formed in two side walls of the guide rail (14), the bouncing post (36) is in contact with the tooth grooves (37) after being popped out to prevent the partition plate (16) from moving, a pull ring (29) fixed by a screw is arranged in the center of the partition plate (16), and the pull rope (23) is tied to the pull ring (29), the electromagnet is controlled to be powered on or powered off by the PLC.

6. The anti-blocking economizer structure of claim 1, characterized in that the size of the distribution pipe (3) is more than or equal to twice the size of the flue gas conveying pipe (2), and the quick dredging pipe (6) is provided with a valve which is in a normally closed state.

7. The anti-blocking economizer structure according to claim 1, wherein the outer surface of the shell (1) is wrapped with a heat insulation material, and the heat exchange water pipe (7) and the communicating pipe (32) are both made of iron materials.