CN114935153A

CN114935153A - Reciprocating type shock wave soot blowing system of boiler

Info

Publication number: CN114935153A
Application number: CN202210593067.5A
Authority: CN
Inventors: 张敬争; 贾琎
Original assignee: Cecep Hefei Renewable Energy Sources Co ltd
Current assignee: Cecep Hefei Renewable Energy Sources Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-08-23

Abstract

The invention relates to the technical field of boiler dust removal, in particular to a reciprocating type shock wave soot blowing system of a boiler, which comprises a boiler wall, a pulse groove and a guide groove, wherein a first pulse tank and a second pulse tank are fixedly installed on one side of the boiler wall, the bottoms of the first pulse tank and the second pulse tank are respectively and fixedly provided with a second pulse guide pipe and a first pulse guide pipe, two pipe sleeves are fixedly installed inside the boiler wall, and one ends of the first pulse guide pipe and the second pulse guide pipe extend to one side of the boiler wall through the pipe sleeves. The invention can perform soot blowing from the two sides and the middle part in the boiler, can perform soot blowing on the inside of the boiler comprehensively, can perform instantaneous soot blowing, can prevent fly ash from being driven by soot blowing medium to erode and wear a heating surface at high speed for a long time, is safer for long-term use, and simultaneously, workers can start the motor with the pulse groove to perform reciprocating movement, so that the spraying cover can perform accurate soot blowing on different positions.

Description

Reciprocating type shock wave soot blowing system of boiler

Technical Field

The invention relates to the technical field of boiler ash removal, in particular to a reciprocating type shock wave ash blowing system of a boiler.

Background

After the boiler is used for a long time, the deposited dust in the boiler needs to be cleaned, the deposited dust in the boiler is divided into three types, namely high-temperature coking, dry loose dust and low-temperature deposited dust, and the existence of the deposited dust can easily induce safety accidents, reduce the heat efficiency, reduce the output of the boiler, prolong the service life of the boiler and reduce the economic benefit.

The boiler is characterized in that the normal use of the boiler is influenced by the existence of ash in the boiler, SO the ash in the boiler needs to be cleaned, the traditional ash cleaning technology mainly comprises ash cleaning agent ash cleaning, steel ball ash cleaning, vibration ash cleaning, sound wave ash cleaning, compressed air blowing ash cleaning, steam ash cleaning, hydraulic ash cleaning and the like, wherein the steam ash cleaning is the mainstream and the most common application is the steam ash cleaning, after the steam ash cleaning is used, water generated by the steam needs to be cleaned, the inconvenience is high, the temperature of the flue gas can be reduced by the steam, the humidity of the flue gas is increased, and the low-temperature ash deposition is formed by the combination of SO2 and SO3 in the flue gas in the boiler and the water steam, SO the tendency of acid condensation can be improved by using the steam ash cleaning, and therefore, in order to solve the problems, the reciprocating shock wave ash cleaning system of the boiler is provided.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a reciprocating shock wave soot blowing system of a boiler, which comprises a furnace wall, a pulse groove and a guide groove, wherein a first pulse tank and a second pulse tank are fixedly arranged on one side of the furnace wall, a second pulse guide pipe and a first pulse guide pipe are respectively and fixedly arranged at the bottoms of the first pulse tank and the second pulse tank, two pipe sleeves are fixedly arranged inside the furnace wall, one ends of the first pulse guide pipe and the second pulse guide pipe extend to one side of the furnace wall through the pipe sleeves, the tops of the first pulse tank and the second pulse tank are connected with an ignition and premixed gas pipeline, one end of the ignition and premixed gas pipeline is connected with a gas distribution ignition device, one end of the second pulse guide pipe is connected with the middle position of one side of the guide groove, clamping strips are arranged on two sides of the top of the guide groove, slots are arranged on two sides of the pulse groove, the guide way with pass through between the pulse groove the card strip with slot sliding connection, the equal fixed mounting in both sides at the guide way back has the mounting panel, two rotate between the mounting panel and install the lead screw, one side fixed mounting of brickwork has the motor, the one end of lead screw run through correspond mounting panel and brickwork and with the output fixed connection of motor.

As a preferred technical scheme of the invention, the distribution ignition device comprises an acetylene conveying pipe, a pressure box, an acetylene pressure stabilizing valve, an oxygen conveying pipe, an exhaust valve, an igniter, a temperature sensor, a water cooling jacket, an oxygen and air flame arrester, an acetylene flame arrester, a pipeline control box, a compressed air pressure stabilizing valve and a compressed air conveying pipe, wherein the oxygen and air flame arrester and the acetylene flame arrester are both connected with one end of the ignition and premixed air pipeline.

As a preferred technical scheme of the invention, the pressure tank is sleeved outside the acetylene conveying pipe and the compressed air conveying pipe, and the acetylene pressure stabilizing valve and the compressed air pressure stabilizing valve are respectively installed on the surfaces of the acetylene conveying pipe and the compressed air conveying pipe inside the pressure tank.

As a preferred technical scheme of the invention, the pipeline control box is sleeved outside the acetylene delivery pipe, the oxygen delivery pipe and the compressed air delivery pipe, electromagnetic valves are arranged on the surfaces of the acetylene delivery pipe, the oxygen delivery pipe and the compressed air delivery pipe inside the pipeline control box, one ends of the oxygen delivery pipe and the compressed air delivery pipe are connected with the top of the oxygen and air flame arrester, and one end of the acetylene delivery pipe is connected with the top of the acetylene flame arrester.

As a preferable technical scheme of the invention, two water cooling sleeves and two temperature sensors are fixedly arranged on the outer surface of the ignition and premixed gas pipeline, and the two temperature sensors are respectively positioned on one side of the two water cooling sleeves.

As a preferable technical scheme of the invention, an igniter and an exhaust valve are fixedly arranged on the outer surface of the ignition and premixed gas pipeline, the igniter is positioned at one side of the two water cooling sleeves and between the two temperature sensors, and the exhaust valve is positioned at one side of the igniter.

As a preferable technical scheme of the present invention, both sides of the top of the pulse groove are fixedly provided with the hair spray covers, both sides of the inside of the pulse groove are fixedly provided with the triangular blocks, and the length of the pulse groove is greater than half of the length of the guide groove.

As a preferable technical scheme of the invention, a connecting block is fixedly arranged at the middle position of the back surface of the pulse groove, an internal thread sleeve is arranged on the surface of the screw rod in a threaded manner, and one end of the connecting block is fixedly connected with the surface of the internal thread sleeve.

The beneficial effects of the invention are:

the reciprocating shock wave soot-blowing system of the boiler ignites the gas in the pulse tank through the igniter and generates thermal explosion, the thermal explosion in the pulse tank can generate a strong compression shock wave which enters the boiler through the pulse guide pipe and is spread all around, and the effect of 'punching suction pull' and 'pressure micro explosion' occur when the thermal explosion sweeps the soot layer in the boiler, so that the soot is scattered, cracked and separated from the attachment surface, and the soot can be removed from the boiler;

this reciprocating type shock wave of boiler blows ash system and blows the ash respectively from the stove inside both sides and middle part to the stove, can be comprehensive blow the ash to the boiler inside, and can instantaneously blow the ash, can avoid the flying ash to be driven high-speed by the soot blowing medium, long-time scouring and wear receives the hot side, it is safer to use for a long time, staff's starter motor drives the lead screw and rotates simultaneously, lead screw internal thread cover removes, the internal thread cover is taken the pulse groove through the connecting block and is controlled about the furnace body is inside, the pulse groove will be followed to the eruption cover and will be removed this moment, thereby can carry out accurate soot blowing to the position of difference, through controlling the motor is just reversing, steerable internal thread cover carries out reciprocating motion, thereby make pulse groove reciprocating motion about the furnace body is inside, thereby can be to the reciprocal soot blowing of furnace body inside.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a reciprocating shock wave soot blowing system of a boiler according to the present invention;

FIG. 2 is one of the perspective views of the pulse channel of the reciprocating shock wave soot blowing system of the boiler of the present invention;

FIG. 3 is a perspective view of a reciprocating shock wave soot blowing system of a boiler of the present invention;

FIG. 4 is a second perspective view of the pulse channel of the reciprocating shock wave soot-blowing system of the boiler of the present invention;

FIG. 5 is a side view of a pulse channel of a reciprocating shock sootblowing system of a boiler of the present invention;

FIG. 6 is an enlarged schematic view at B in FIG. 5 of a reciprocating shock wave soot blowing system for a boiler in accordance with the present invention;

FIG. 7 is a schematic structural view at A-A of FIG. 5 of a reciprocating shock wave soot blowing system for a boiler in accordance with the present invention;

FIG. 8 is a schematic structural diagram of an air distribution ignition device of a reciprocating shock wave soot-blowing system of a boiler according to the present invention;

in the figure: 1. a distribution ignition device; 2. ignition and premix gas lines; 3. a furnace wall; 4. a first pulse tank; 5. pipe sleeve; 6. a first impulse conduit; 7. a second impulse conduit; 8. a motor; 9. a hair spray cover; 10. a screw rod; 11. a pulse groove; 12. a guide groove; 13. mounting a plate; 14. an internal thread sleeve; 15. connecting blocks; 16. a triangular block; 17. a second pulse tank; 18. inserting slots; 19. clamping the strip; 20. an acetylene delivery pipe; 21. a pressure tank; 22. an acetylene pressure maintaining valve; 23. an oxygen delivery pipe; 24. a compressed air delivery pipe; 25. a compressed air pressure maintaining valve; 26. a pipeline control box; 27. an acetylene flame arrestor; 28. oxygen and air flame arrestors; 29. water cooling jacket; 30. a temperature sensor; 31. an igniter; 32. and (4) exhausting the valve.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1-8, the present invention provides a technical solution: a technical scheme of a boiler reciprocating shock wave soot blowing system comprises a furnace wall 3, a pulse groove 11 and a guide groove 12, wherein a first pulse tank 4 and a second pulse tank 17 are fixedly installed on one side of the furnace wall 3, a second pulse guide pipe 7 and a first pulse guide pipe 6 are respectively and fixedly installed at the bottoms of the first pulse tank 4 and the second pulse tank 17, two pipe sleeves 5 are fixedly installed inside the furnace wall 3, one ends of the first pulse guide pipe 6 and the second pulse guide pipe 7 extend to one side of the furnace wall 3 through the pipe sleeves 5, the tops of the first pulse tank 4 and the second pulse tank 17 are connected with an ignition and premixed gas pipeline 2, one end of the ignition and premixed gas pipeline 2 is connected with an ignition device 1, one end of the second pulse guide pipe 7 is connected with the middle position on one side of the guide groove 12, mixed gas containing acetylene and oxygen is conveyed into the first pulse tank 4 and the second pulse tank 17 through the ignition device 1, the gas in the first pulse tank 4 and the gas in the second pulse tank 17 are ignited by the igniter 31 and thermal explosion is generated, the thermal explosion in the first pulse tank 4 and the second pulse tank 17 can generate a strong compression shock wave, the compression shock wave respectively enters the furnace and the pulse groove 11 through the first pulse conduit 6 and the second pulse conduit 7, the compression shock wave entering the furnace is spread at four positions outside the furnace, the shock wave entering the pulse groove 11 enters the middle part of the furnace through the spraying cover 9 and is spread at four positions, and when an ash layer in the furnace is swept, a stamping, sucking and pulling effect and a pressure micro-explosion effect are generated, so that the ash is scattered, cracked and separated from an attachment surface, thereby the ash can be removed from the furnace, and the inside of the boiler can be comprehensively subjected to ash blowing by respectively blowing the furnace from the outside and the middle part.

The both sides at guide way 12 top all are provided with card strip 19, slot 18 has all been seted up to pulse groove 11's both sides, through card strip 19 and slot 18 sliding connection between guide way 12 and the pulse groove 11, the equal fixed mounting in both sides at the guide way 12 back has mounting panel 13, lead screw 10 is installed in rotating between two mounting panels 13, one side fixed mounting of brickwork 3 has motor 8, the one end of lead screw 10 run through correspond mounting panel 13 and brickwork 3 and with motor 8's output fixed connection, through control motor 8 just reversing, steerable internal thread cover 14 carries out reciprocating motion, thereby make pulse groove 11 control reciprocating motion inside the furnace body, thereby can reciprocate the soot blowing to the furnace body inside.

The distribution ignition device 1 comprises an acetylene conveying pipe 20, a pressure box 21, an acetylene pressure stabilizing valve 22, an oxygen conveying pipe 23, an exhaust valve 32, an igniter 31, a temperature sensor 30, a water cooling jacket 29, an oxygen and air flame arrester 28, an acetylene flame arrester 27, a pipeline control box 26, a compressed air pressure stabilizing valve 25 and a compressed air conveying pipe 24, wherein the oxygen and air flame arrester 28 and the acetylene flame arrester 27 are both connected with one end of an ignition and premixed gas pipeline 2, and through the arranged oxygen and air flame arrester 28 and the acetylene flame arrester 27, the situation that flame enters the acetylene conveying pipe 20, the oxygen conveying pipe 23 and the compressed air conveying pipe 24 after ignition can be avoided.

The pressure tank 21 is sleeved outside the acetylene conveying pipe 20 and the compressed air conveying pipe 24, the acetylene pressure stabilizing valve 22 and the compressed air pressure stabilizing valve 25 are respectively installed on the surfaces of the acetylene conveying pipe 20 and the compressed air conveying pipe 24 inside the pressure tank 21, and the acetylene pressure stabilizing valve 22 and the compressed air pressure stabilizing valve 25 can keep the pressure of acetylene and compressed air within a certain range.

26 covers of pipeline control box establish at acetylene conveying pipe 20, oxygen conveying pipe 23 and compressed air conveying pipe 24's the outside, acetylene conveying pipe 20, oxygen conveying pipe 23 and compressed air conveying pipe 24 are located the inside surface of pipeline control box 26 and all are provided with the solenoid valve, oxygen conveying pipe 23 and compressed air conveying pipe 24's one end all is connected with the top of oxygen and air spark arrester 28, acetylene conveying pipe 20's one end is connected with acetylene flame arrester 27's top, can be to acetylene conveying pipe 20 through the solenoid valve, opening or closing of oxygen conveying pipe 23 and compressed air conveying pipe 23 is controlled.

Two water cooling sleeves 29 and two temperature sensors 30 are fixedly installed on the outer surface of the ignition and premixed gas pipeline 2, the two temperature sensors 30 are respectively located on one side of the two water cooling sleeves 29, and the temperature sensors 30 can detect the temperature inside the ignition and premixed gas pipeline 2.

An igniter 31 and an exhaust valve 32 are fixedly installed on the outer surface of the ignition and premixed gas pipeline 2, the igniter 31 is positioned on one side of the two water cooling sleeves 29 and between the two temperature sensors 30, the exhaust valve 32 is positioned on one side of the igniter 31, and the gas in the first pulse tank 4 and the second pulse tank 17 can be ignited through the igniter 31 and can generate thermal explosion.

Both sides at pulse groove 11 top all fixed mounting have the eruption cover 9, the inside both sides of pulse groove 11 all fixed mounting have triangle piece 16, the length of pulse groove 11 is greater than half of guide way 12 length, through the triangle piece 16 that sets up, the ability of preventing deformation of multiplicable pulse groove 11 both sides, because the length of pulse groove 11 is greater than half of guide way 12 length, consequently can make when pulse groove 11 removes one side to guide way 12, second pulse pipe 7 still can communicate with the inside of pulse groove 11.

The intermediate position department fixed mounting at the pulse groove 11 back has connecting block 15, the surface thread of lead screw 10 installs internal thread cover 14, the one end of connecting block 15 and the fixed surface of internal thread cover 14 are connected, but staff's starter motor drives lead screw 10 and rotates, lead screw 10 internal thread cover 14 removes, internal thread cover 14 passes through connecting block 15 and drives pulse groove 11 and control in the furnace body is inside, spout the hair-shield 9 this moment and will follow pulse groove 11 and remove, thereby can carry out accurate soot blowing to the position of difference.

The working principle is as follows: when the reciprocating shock wave soot blowing system of the boiler is used, firstly, the guide groove 12 is arranged at a proper position in the boiler, then, the mixed gas containing acetylene and oxygen is conveyed into the first pulse tank 4 and the second pulse tank 17 through the gas distribution ignition device 1, the gas in the first pulse tank 4 and the second pulse tank 17 is ignited through the igniter 31, thermal explosion is generated, the thermal explosion in the first pulse tank 4 and the second pulse tank 17 can generate a strong compression shock wave, the compression shock wave respectively enters the boiler and the pulse tank 11 through the first pulse conduit 6 and the second pulse conduit 7, the compression shock wave entering the boiler is transmitted at four positions outside the boiler, the shock wave entering the pulse tank 11 enters the middle part of the boiler through the eruption cover 9 and is transmitted at four positions, and a stamping and sucking and pulling effect and a pressure micro-explosion effect are generated when an accumulated soot layer in the boiler is swept, the soot is scattered, broken and separated from the attachment surface, so that the soot can be removed from the furnace, and soot can be comprehensively blown into the boiler by respectively blowing the soot from the outer side and the middle part of the furnace.

The instantaneous explosion pressure in the first pulse tank 4 and the second pulse tank 17 caused by thermal explosion and the physical explosion generated by pressure relief at the outlet interface of the first pulse conduit 6 and the eruption cover 9 can also generate a compression shock wave, and the dust removal effect is also realized;

the pulse jet flow ejected at high speed from the first pulse conduit 6 and the outlet of the spraying cover 9 following the shock wave can have strong sweeping effect on the accumulated dust in the coverage range, meanwhile, due to the instant high-temperature effect of the pulse jet flow, the pulse jet flow has certain thermal shock cracking effect on the hardened dust and dirt directly impacted by the pulse jet flow, and the dust-accumulated surface excitation caused by thermal explosion, physical explosion, compression shock wave and high-speed pulse jet flow also has obvious high-frequency alternating inertia force dust cleaning effect.

But staff's starter motor drives lead screw 10 and rotates, lead screw 10 internal thread cover 14 removes, internal thread cover 14 passes through connecting block 15 and drives pulse groove 11 and remove about the furnace body is inside, it will follow pulse groove 11 and remove to spout the cover 9 this moment, thereby can carry out accurate soot blowing to the position of difference, through control motor 8 just reversing, steerable internal thread cover 14 carries out reciprocating motion, thereby make pulse groove 11 reciprocating motion about the furnace body is inside, thereby can reciprocate the soot blowing to the furnace body inside.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler reciprocating type shock wave soot blowing system comprises a furnace wall (3), a pulse groove (11) and a guide groove (12), and is characterized in that a first pulse tank (4) and a second pulse tank (17) are fixedly installed on one side of the furnace wall (3), a second pulse guide pipe (7) and a first pulse guide pipe (6) are respectively and fixedly installed at the bottoms of the first pulse tank (4) and the second pulse tank (17), two pipe sleeves (5) are fixedly installed inside the furnace wall (3), one ends of the first pulse guide pipe (6) and the second pulse guide pipe (7) extend to one side of the furnace wall (3) through the pipe sleeves (5), the tops of the first pulse tank (4) and the second pulse tank (17) are connected with an ignition and premixed gas pipeline (2), one end of the ignition and premixed gas pipeline (2) is connected with an ignition device (1), the one end of second pulse pipe (7) with the intermediate position department of guide way (12) one side connects, the both sides at guide way (12) top all are provided with card strip (19), slot (18) have all been seted up to the both sides of pulse groove (11), guide way (12) with pass through between pulse groove (11) card strip (19) with slot (18) sliding connection, the equal fixed mounting in both sides at the guide way (12) back has mounting panel (13), two lead screw (10) are installed in the rotation between mounting panel (13), one side fixed mounting of furnace wall (3) has motor (8), the one end of lead screw (10) runs through and corresponds mounting panel (13) and furnace wall (3) and with the output fixed connection of motor (8).

2. The boiler reciprocating type shock wave soot blowing system as claimed in claim 1, wherein the distribution ignition device (1) comprises an acetylene delivery pipe (20), a pressure tank (21), an acetylene pressure stabilizing valve (22), an oxygen delivery pipe (23), an exhaust valve (32), an igniter (31), a temperature sensor (30), a water cooling jacket (29), an oxygen and air flame arrester (28), an acetylene flame arrester (27), a pipeline control box (26), a compressed air pressure stabilizing valve (25) and a compressed air delivery pipe (24), and the oxygen and air flame arrester (28) and the acetylene flame arrester (27) are both connected with one end of the ignition and premixing air pipeline (2).

3. The boiler reciprocating type shock wave soot blowing system according to claim 2, wherein the pressure box (21) is sleeved outside the acetylene conveying pipe (20) and the compressed air conveying pipe (24), and the acetylene pressure stabilizing valve (22) and the compressed air pressure stabilizing valve (25) are respectively installed on the surfaces of the acetylene conveying pipe (20) and the compressed air conveying pipe (24) inside the pressure box (21).

4. The boiler reciprocating type shock wave soot blowing system as claimed in claim 2, wherein the pipeline control box (26) is sleeved outside the acetylene delivery pipe (20), the oxygen delivery pipe (23) and the compressed air delivery pipe (24), electromagnetic valves are arranged on the surfaces of the acetylene delivery pipe (20), the oxygen delivery pipe (23) and the compressed air delivery pipe (24) inside the pipeline control box (26), one ends of the oxygen delivery pipe (23) and the compressed air delivery pipe (24) are connected with the top of the oxygen and air flame arrester (28), and one end of the acetylene delivery pipe (20) is connected with the top of the acetylene flame arrester (27).

5. The boiler reciprocating type shock wave soot blowing system according to claim 2, characterized in that two water cooling jackets (29) and two temperature sensors (30) are fixedly installed on the outer surface of the ignition and premixed gas pipeline (2), and the two temperature sensors (30) are respectively positioned at one side of the two water cooling jackets (29).

6. The boiler reciprocating type shock wave soot blowing system according to claim 2, characterized in that an igniter (31) and an exhaust valve (32) are fixedly installed on the outer surface of the ignition and premixed gas pipeline (2), the igniter (31) is located at one side of the two water cooling jackets (29) and between the two temperature sensors (30), and the exhaust valve (32) is located at one side of the igniter (31).

7. The boiler reciprocating type shock wave soot blowing system of claim 1, characterized in that the spraying hoods (9) are fixedly installed on both sides of the top of the pulse groove (11), triangular blocks (16) are fixedly installed on both sides of the inside of the pulse groove (11), and the length of the pulse groove (11) is more than half of the length of the guide groove (12).

8. The boiler reciprocating type shock wave soot blowing system of claim 1, characterized in that a connecting block (15) is fixedly installed at the middle position of the back surface of the pulse groove (11), an internal thread sleeve (14) is threadedly installed on the surface of the screw rod (10), and one end of the connecting block (15) is fixedly connected with the surface of the internal thread sleeve (14).