CN114935153A - Reciprocating type shock wave soot blowing system of boiler - Google Patents

Abstract

The invention relates to the technical field of boiler soot cleaning, in particular to a boiler reciprocating shock wave soot blowing system, comprising a furnace 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 furnace wall , the bottoms of the first pulse tank and the second pulse tank are respectively fixed with a second pulse conduit and a first pulse conduit, and two pipe sleeves are fixedly installed in the interior of the furnace wall, and the first pulse conduit One end of the second pulse conduit and the second pulse conduit both extend to one side of the furnace wall through the tube sleeve. The invention can carry out soot blowing from both sides and the middle of the furnace, can comprehensively blow soot inside the boiler, and can instantaneously blow soot, and can avoid the fly ash being driven by the soot blowing medium to scour and wear the heating surface at high speed and for a long time, and it can be used for a long time. It is safer, and at the same time, the staff can start the motor to reciprocate with the pulse groove, so that the spray hood can accurately blow soot in different positions.

Description

A boiler reciprocating shock wave soot blowing system

technical field

The invention relates to the technical field of boiler soot cleaning, in particular to a boiler reciprocating shock wave soot blowing system.

Background technique

After the boiler is used for a long time, the internal ash deposits need to be cleaned up. There are three types of ash deposits in the boiler, namely high temperature coking, dry loose ash and low temperature ash deposits. The existence of these ash deposits will easily induce safety accidents and reduce Thermal efficiency, reduce boiler output, reduce boiler life and reduce economic benefits.

Since the existence of ash deposits in the boiler will affect the normal use of the boiler, it is necessary to clean the ash deposits inside the boiler. Compressed air blowing soot cleaning, steam soot blowing and hydraulic soot blowing, etc., among which the mainstream and most common application is steam soot blowing. After using steam soot blowing, it is necessary to remove the water generated by the steam, which is very inconvenient, and the steam It will reduce the temperature of the flue gas, increase the humidity of the flue gas, and because the SO2 and SO3 contained in the flue gas inside the boiler will combine with water vapor to form low-temperature ash deposition, so the use of steam soot blowing will increase the tendency of acid dew formation. , so in order to solve the above problems, we make improvements to this, and propose a boiler reciprocating shock wave soot blowing system.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:

The present invention is a boiler reciprocating shock wave soot blowing system, which comprises a furnace wall, a pulse groove and a guide groove. A first pulse tank and a second pulse tank are fixedly installed on one side of the furnace wall, and the first pulse tank is connected to the other side of the furnace wall. The bottom of the second pulse tank is respectively fixed with a second pulse duct and a first pulse duct, two pipe sleeves are fixedly installed inside the furnace wall, and one end of the first pulse duct and the second pulse duct is fixed. Both extend to one side of the furnace wall through the pipe sleeve, the tops of the first pulse tank and the second pulse tank are connected with ignition and premixed gas pipelines, and one end of the ignition and premixed gas pipelines A gas distribution ignition device is connected, one end of the second pulse conduit is connected to the middle position of one side of the guide groove, the two sides of the top of the guide groove are provided with clips, and both sides of the pulse groove are A slot is provided, the guide slot and the pulse slot are slidably connected to the slot through the clip, and mounting plates are fixedly installed on both sides of the back of the guide slot, and two of the mounting plates A screw rod is rotatably installed therebetween, a motor is fixedly installed on one side of the furnace wall, and one end of the screw rod passes through the corresponding mounting plate and the furnace wall and is fixedly connected with the output end of the motor.

As a preferred technical solution of the present invention, the gas distribution ignition device includes an acetylene delivery pipe, a pressure tank, an acetylene regulator valve, an oxygen delivery pipe, an exhaust valve, an igniter, a temperature sensor, a water cooling jacket, an oxygen and air resistance Firearm, acetylene flame arrester, pipeline control box, compressed air pressure stabilizer valve and compressed air delivery pipe, the oxygen and air flame arrester and the acetylene flame arrester are all connected to one end of the ignition and premixed gas pipeline.

As a preferred technical solution of the present invention, the pressure tank is sleeved on the outside of the acetylene conveying pipe and the compressed air conveying pipe, and the acetylene conveying pipe and the compressed air conveying pipe are located inside the pressure tank The surface of the acetylene regulator valve and the compressed air regulator valve are respectively installed.

As a preferred technical solution of the present invention, the pipeline control box is sleeved on the outside of the acetylene delivery pipe, the oxygen delivery pipe and the compressed air delivery pipe, and the acetylene delivery pipe, the oxygen delivery pipe and the The surface of the compressed air delivery pipe located inside the pipeline control box is provided with a solenoid valve, one end of the oxygen delivery pipe and the compressed air delivery pipe are both connected to the top of the oxygen and air flame arrester, and the acetylene delivery pipe is connected to the top of the flame arrester. One end is connected to the top of the acetylene flame arrester.

As a preferred technical solution of the present invention, two water cooling jackets and two temperature sensors are fixedly installed on the outer surface of the ignition and premixed gas pipeline, and the two temperature sensors are respectively located at one of the two water cooling jackets. side.

As a preferred technical solution of the present invention, an igniter and an exhaust valve are fixedly installed on the outer surface of the ignition and premixed gas pipeline, and the igniter is located on one side of the two water cooling jackets and on the two Between the temperature sensors, the exhaust valve is located on one side of the igniter.

As a preferred technical solution of the present invention, both sides of the top of the pulse slot are fixedly installed with a spray cover, both sides of the inside of the pulse slot are fixedly installed with triangular blocks, and the length of the pulse slot is longer than the guide half the length of the slot.

As a preferred technical solution of the present invention, a connecting block is fixedly installed at the middle position of the back of the pulse groove, an inner threaded sleeve is threadedly installed on the surface of the screw rod, and one end of the connecting block is connected to the inner threaded sleeve. surface fixed connection.

The beneficial effects of the present invention are:

The boiler reciprocating shock wave soot blowing system ignites the gas inside the pulse tank through the igniter, and produces a thermal explosion. The thermal explosion in the pulse tank will generate a strong compression shock wave, which enters the furnace through the pulse tube and spreads around. When passing the ash layer in the furnace, the "pulling and pulling" effect and the "pressure micro-explosion" effect occur, so that the ash collapses, shatters, and separates from the attachment surface, so that the ash can be removed from the furnace;

The boiler reciprocating shock wave soot blowing system blows soot in the furnace from both sides and the middle of the furnace, which can comprehensively blow soot inside the boiler, and can instantly blow soot, which can avoid the fly ash being driven by the soot blowing medium at high speed. , Long-term erosion and wear of the heating surface, long-term use is safer. At the same time, the staff can start the motor to drive the lead screw to rotate, the internal thread sleeve of the lead screw moves, and the internal thread sleeve drives the pulse groove to move left and right inside the furnace body through the connecting block. At the same time, the spray hood will move with the pulse slot, so that the soot can be accurately blown at different positions. By controlling the forward and reverse rotation of the motor, the inner threaded sleeve can be controlled to reciprocate, so that the pulse slot can move left and right inside the furnace body. Thereby, reciprocating soot blowing can be performed inside the furnace body.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

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

Fig. 2 is one of the perspective views of the pulse groove of a boiler reciprocating shock wave soot blowing system of the present invention;

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

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

Fig. 5 is the side view of the pulse groove of a kind of boiler reciprocating shock wave soot blowing system of the present invention;

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

Fig. 7 is the structural representation at A-A in Fig. 5 of a kind of boiler reciprocating shock wave soot blowing system of the present invention;

8 is a schematic structural diagram of a gas distribution ignition device of a boiler reciprocating shock wave soot blowing system of the present invention;

In the figure: 1. Gas distribution ignition device; 2. Ignition and premixed gas pipeline; 3. Furnace wall; 4. First pulse tank; 5. Pipe sleeve; 6. First pulse conduit; 7. Second pulse conduit; 8. Motor; 9. Hairspray cover; 10. Screw rod; 11. Pulse groove; 12. Guide groove; 13. Mounting plate; 14. Internal thread sleeve; 15. Connection block; 16. Triangular block; 17. Second pulse Tank; 18, slot; 19, clip; 20, acetylene delivery pipe; 21, pressure tank; 22, acetylene regulator valve; 23, oxygen delivery tube; 24, compressed air delivery tube; 25, compressed air regulator valve ; 26, pipeline control box; 27, acetylene flame arrester; 28, oxygen and air flame arrester; 29, water cooling jacket; 30, temperature sensor; 31, igniter; 32, exhaust valve.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

1-8, the present invention provides a technical solution: a technical solution of a boiler reciprocating shock wave soot blowing system, including a furnace wall 3, a pulse groove 11 and a guide groove 12, one side of the furnace wall 3 is fixedly installed A pulse tank 4 and a second pulse tank 17, the bottoms of the first pulse tank 4 and the second pulse tank 17 are respectively fixed with a second pulse duct 7 and a first pulse duct 6, and the inside of the furnace wall 3 is fixedly installed with two The tube sleeve 5, one end of the first pulse conduit 6 and the second pulse conduit 7 all extend to one side of the furnace wall 3 through the tube sleeve 5, and the tops of the first pulse tank 4 and the second pulse tank 17 are connected with ignition and premixing. Gas pipeline 2, one end of the ignition and premixed gas pipeline 2 is connected with a gas distribution ignition device 1, and one end of the second pulse conduit 7 is connected with the middle position of one side of the guide groove 12, through the gas distribution ignition device 1 to the first pulse A mixed gas containing acetylene and oxygen is transported in the tank 4 and the second pulse tank 17, and the gas inside the first pulse tank 4 and the second pulse tank 17 is ignited by the igniter 31, and a thermal explosion is generated, and the first pulse tank 4 The thermal explosion in the second pulse tank 17 will generate a strong compression shock wave, and the compression shock wave will enter the furnace and the pulse groove 11 through the first pulse conduit 6 and the second pulse conduit 7 respectively, and enter the compression shock wave in the furnace. It will propagate around the outside of the furnace, and the shock wave entering the pulse slot 11 will enter the middle of the furnace through the eruption hood 9 and propagate around, and the "pulling and pulling" effect will occur when passing through the ash layer in the furnace. The "pressure micro-explosion" effect makes the ash disintegrate, fragment, and separate from the attachment surface, so that the ash can be removed from the furnace. Ash.

Both sides of the top of the guide slot 12 are provided with clips 19 , and slots 18 are provided on both sides of the pulse slot 11 . A mounting plate 13 is fixedly installed on both sides of the back, a screw rod 10 is rotatably installed between the two mounting plates 13, a motor 8 is fixedly installed on one side of the furnace wall 3, and one end of the screw rod 10 penetrates through the corresponding mounting plate 13 and the furnace. The wall 3 is fixedly connected with the output end of the motor 8. By controlling the forward and reverse rotation of the motor 8, the inner threaded sleeve 14 can be controlled to reciprocate, so that the pulse groove 11 can reciprocate left and right inside the furnace body, so that the inside of the furnace body can be reciprocated. Perform reciprocating soot blowing.

The gas distribution ignition device 1 includes an acetylene delivery pipe 20, a pressure tank 21, an acetylene regulator 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, The acetylene flame arrester 27, the pipeline control box 26, the compressed air regulator valve 25 and the compressed air delivery pipe 24, the oxygen and air flame arrester 28 and the acetylene flame arrester 27 are all connected to one end of the ignition and premixed gas pipeline 2. The oxygen and air flame arrester 28 and the acetylene flame arrester 27 can prevent the flame from entering the interior of the acetylene delivery pipe 20 , the oxygen delivery pipe 23 and the compressed air delivery pipe 24 after ignition.

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

The pipeline control box 26 is sleeved on the outside of the acetylene delivery pipe 20 , the oxygen delivery pipe 23 and the compressed air delivery pipe 24 , and the acetylene delivery pipe 20 , the oxygen delivery pipe 23 and the compressed air delivery pipe 24 are located on the inner surface of the pipeline control box 26 Both are provided with solenoid valves, one end of the oxygen delivery pipe 23 and the compressed air delivery pipe 24 are connected to the top of the oxygen and air flame arrester 28, one end of the acetylene delivery pipe 20 is connected to the top of the acetylene flame arrester 27, and the solenoid valve can The opening or closing of the acetylene delivery pipe 20 , the oxygen delivery pipe 23 and the compressed air delivery pipe 23 is controlled.

Two water cooling jackets 29 and two temperature sensors 30 are fixedly installed on the outer surface of the ignition and premixing pipeline 2. The two temperature sensors 30 are located on one side of the two water cooling jackets 29 respectively. The temperature inside the gas pipeline 2 is detected.

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 on one side of the two water cooling jackets 29 and between the two temperature sensors 30, and the exhaust valve 32 is located in the igniter On one side of 31, the gas in the first pulse tank 4 and the second pulse tank 17 can be ignited by the igniter 31, and a thermal explosion can be generated.

Both sides of the top of the pulse slot 11 are fixedly installed with the spray cover 9, and both sides of the inside of the pulse slot 11 are fixedly installed with triangular blocks 16. The length of the pulse slot 11 is greater than half of the length of the guide slot 12. The ability to prevent deformation on both sides of the pulse groove 11 can be increased. Since the length of the pulse groove 11 is greater than half of the length of the guide groove 12, the second pulse catheter 7 can still be maintained when the pulse groove 11 is moved to one side of the guide groove 12. It can communicate with the inside of the pulse groove 11 .

A connecting block 15 is fixedly installed at the middle position of the back of the pulse groove 11, the surface of the screw rod 10 is threadedly installed with an internal thread sleeve 14, and one end of the connecting block 15 is fixedly connected with the surface of the internal thread sleeve 14. The staff can start the motor to drive the thread The rod 10 rotates, the inner thread sleeve 14 of the screw rod 10 moves, and the inner thread sleeve 14 drives the pulse groove 11 to move left and right inside the furnace body through the connecting block 15. At this time, the eruption cover 9 will follow the pulse groove 11 to move, so that the Precise soot blowing in different positions.

Working principle: When using the boiler reciprocating shock wave soot blowing system, first install the guide groove 12 in a suitable position in the boiler, and then transport it to the first pulse tank 4 and the second pulse tank 17 through the gas distribution ignition device 1 The mixed gas containing acetylene and oxygen is ignited by the igniter 31 to ignite the gas inside the first pulse tank 4 and the second pulse tank 17, and generate thermal explosion, and the thermal explosion in the first pulse tank 4 and the second pulse tank 17 A strong compression shock wave will be generated, and the compression shock wave will enter the furnace and the pulse groove 11 through the first pulse conduit 6 and the second pulse conduit 7 respectively. The shock wave entering the pulse groove 11 will enter the middle of the furnace through the eruption hood 9 and spread around. By collapsing, fragmenting, and detaching from the attachment surface, soot deposits can be removed from the furnace. By blowing soot from the outside and the middle of the furnace, the inside of the boiler can be completely blown.

The thermal explosion in the first pulse tank 4 and the second pulse tank 17 will also cause the instantaneous explosion pressure in the tank and the physical explosion caused by the pressure relief at the outlet interface of the first pulse duct 6 and the blast hood 9 will also produce a Compression shock wave also has the effect of cleaning dust;

And the high-speed pulse jet ejected from the first pulse conduit 6 and the outlet of the eruption hood 9 following the shock wave can have a strong purging effect on the dust accumulation within its coverage, and at the same time, due to the instantaneous high temperature effect of the pulse jet, it directly The impacted plate ash scaling has a certain effect of "thermal shock cracking". With the excitation of the soot surface caused by thermal explosion, physical explosion, compression shock wave and high-speed pulse jet, it also has obvious high-frequency alternating inertia force to remove dust. effect.

The staff can start the motor to drive the screw rod 10 to rotate, the inner threaded sleeve 14 of the screw rod 10 moves, and the inner threaded sleeve 14 drives the pulse groove 11 to move left and right inside the furnace body through the connecting block 15. At this time, the eruption cover 9 will follow the pulse groove. 11 is moved, so that different positions can be accurately blown soot. By controlling the forward and reverse rotation of the motor 8, the inner threaded sleeve 14 can be controlled to reciprocate, so that the pulse groove 11 can reciprocate left and right inside the furnace body. Reciprocating soot blowing is carried out inside the furnace body.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the orientations or positional relationships shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

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).

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