CN218409970U - High sharing formula gas wave soot blowing system - Google Patents

Abstract

The utility model provides a highly shared gas wave soot blowing system, which comprises a gas wave generator and a plurality of emission components; the plurality of emission assemblies are connected with the gas wave generator through the guide pipe; the transmitting component comprises a valve and a transmitter; the valve is used for controlling the opening and closing of a pipeline between the emitter and the gas wave generator; the valve comprises a switch in-place sensor, and the controller is connected with the valve and the switch in-place sensor. This application passes through pipe and valve connection with former isolated gas wave transmitter separately and is a controllable system, and then can let all gas wave transmitters in the system share gas wave generator, has still opened the barrier between the gaseous ripples soot blower of different grade type, has opened up very wide innovation space for gas ripples soot blowing system, not only can reduce required gas wave generator's quantity by a wide margin, can also improve by a wide margin and blow the grey effect.

Description

High sharing formula gas wave soot blowing system

Technical Field

The utility model belongs to the technical field of boiler soot blower technique and specifically relates to a high sharing formula gas wave soot blowing system is related to.

Background

The soot blower belongs to an auxiliary boiler and has the functions of blowing off accumulated soot on a heating surface of a boiler in the running process of the boiler, reducing smoke resistance and improving heat exchange efficiency. The soot blowing effect of the soot blower directly influences the operation load and the thermal efficiency of the boiler, and has very important significance on the normal operation and the economic benefit of the boiler. Outside the oil gas removing boiler, most of power generation/heat supply boilers taking coal, biomass, garbage and the like as fuels and most of industrial waste heat boilers need to be provided with soot blowers.

The boiler soot blowers are of various types, and the common types include steam soot blowers, hydraulic soot blowers, sound wave soot blowers, explosion pulse shock wave soot blowers, gas gun type pulse shock wave soot blowers and the like.

The soot blowing medium of the sound wave soot blower is sound wave, the soot blowing medium of the pulse shock wave soot blower is compression shock wave, and both the sound wave and the compression shock wave belong to space energy wave propagating in gas medium, so that the sound wave soot blower and the pulse shock wave soot blower belong to gas propagation wave, which can be referred to as gas wave for short. Therefore, whether a sonic or pulsed shock sootblower, or other type of spatial energy sootblower that may later appear to propagate in a gaseous medium, may be collectively referred to as a gas sootblower.

The sound wave soot blower was invented by Swedish in the first sixties of the last century and introduced into China in the later period, and the main soot blowing mechanism is that the sound wave causes soot to resonate to loosen and fall off when the frequency of the sound wave is close to the inherent frequency of the soot, and the sound wave can force the tiny fly ash particles in the flue gas to "dance" along with the sound wave to a certain extent and not to be easily deposited.

At present, the acoustic wave soot blower mainly has three types of resonant cavities, namely a Hardman whistle type, a diaphragm type and a rotary whistle type. Except for the resonant cavity type sound wave generator which is sometimes used alone, most of the sound wave soot blowers at least comprise two parts, namely a sound wave generator and a sound wave amplifier.

The existing sound wave soot blowing system is generally that a complete sound wave soot blower is configured at a soot blowing point, and the number of sound wave generators is too large. Under the constraint of intense price competition, the practical influence caused by the method is as follows: the sound wave soot blower is simplified and reduced more and more, so that the sound power and sound intensity are reduced more and more, the soot blowing effect is poorer and more, and the technical progress, the industry development and the market application of the sound wave soot blower are seriously restricted.

The explosion pulse shock wave soot blower is also called as deflagration pulse shock wave soot blower, thermal explosion pulse shock wave soot blower, weak explosion pulse shock wave soot blower, deflagration shock wave soot blower, explosion shock wave soot blower and the like, is called as deflagration soot blower, thermal explosion soot blower, weak explosion soot blower, pulse soot blower, shock wave soot blower, explosion wave soot blower and the like for short, belongs to a newly-developed soot blower, is invented by Ukran for the earliest time, and has only twenty years of development history in China. The soot blower mainly performs soot blowing by means of comprehensive effects of impact of compression shock waves generated by explosion of premixed combustible gas and the like, and because the shock waves do not cause serious scouring and abrasion on heating surfaces of a boiler tube bundle and the like in the case of steam soot blowing, the soot blower is relatively low in manufacturing cost, low in failure rate and low in operating cost, and the soot blower is quite popular at present.

The explosion pulse shock wave soot blower mainly comprises an explosion pulse shock wave generator and a nozzle:

the explosion pulse shock wave generator, also called pulse generator, shock wave generator, also called explosion tank, deflagration tank, explosion tank, thermal explosion tank, etc. is the place where combustible premixed gas or other explosion agent is exploded, also is the most important part of the explosion pulse shock wave soot blower, and is generally installed outside the furnace wall of the boiler.

The outlet of the nozzle is penetrated through the furnace wall and extended into the flue of the boiler, the inlet is connected with the outlet of the pulse shock wave generator directly or through the shock wave guide tube, and the compressed shock wave generated by the pulse shock wave generator is transmitted into the flue of the boiler through the nozzle to blow the soot.

The existing blast pulse shock wave soot-blowing system is generally that a soot-blowing point is provided with a blast pulse impulse generator, the number of the blast pulse impulse generators is too large, the occupation ratio in the total cost is large, and the actual influence caused by the blast pulse impulse generator under the constraint of intense price competition is as follows: on one hand, the explosion pulse shock wave generator is simplified and reduced more and more, so that the explosion energy is reduced more and more, the explosion strength is reduced more and more, the soot blowing effect of the explosion compression shock wave is poor more and more, the nozzle is required to face the boiler tube bundle, soot blowing is mainly carried out by utilizing the blowing action of high-speed pulse airflow generated by explosion, the blowing range is limited, the boiler tube bundle is scouredly worn seriously, the boiler tube explosion accident is caused, and the majority of users are in a perplexity state; on the other hand, the situation also seriously hinders the research and development enthusiasm of manufacturers on the blasting pulse shock wave generator, and also restricts the technical progress, the industry development and the market application of the blasting pulse shock wave soot blower.

The gas gun type pulse shock wave soot blower is also called as gas energy pulse shock wave soot blower, is evolved by domestic science and technology personnel through an air gun, mainly comprises a gas gun type pulse shock wave generator and a nozzle, the gas gun type pulse shock wave generator mainly comprises a pressure container and a pulse valve, soot blowing is carried out by utilizing the comprehensive effects of instantaneous opening of the pulse valve, instantaneous release of pressure gas to generate compression shock waves, impact of the compression shock waves and the like, and the pressure gas comprises steam, compressed air, compressed nitrogen and the like. Compared with an explosion pulse shock wave soot blower, the explosion pulse shock wave soot blower has the advantages that gas is not needed, so that the explosion pulse shock wave soot blower is safer, the opening of a pulse valve belongs to mechanical action, the action speed of the pulse valve is different from the explosion speed of the explosion pulse shock wave soot blower by orders of magnitude, so that the generated compression shock wave is not strong, the soot blowing effect of the compression shock wave is not obvious enough, soot blowing is performed by means of direct blowing of suddenly ejected air flow, the blowing range is limited, and the boiler tube bundle is easily subjected to 'tube explosion' due to scouring and abrasion, so that the explosion pulse shock wave soot blower is not adopted.

The nozzle of the gas gun type pulse shock wave soot blower is also called as a spray pipe and is basically the same as the nozzle of the explosion pulse shock wave soot blower.

The existing gas gun type pulse shock wave soot blowing system is generally that a soot blowing point is provided with a gas gun type pulse shock wave generator, the number of the pulse shock wave generators is too large, the ratio of the pulse shock wave generators in the total manufacturing cost is large, and the actual influence caused by the strong price competition is as follows: on one hand, the pressure vessel is gradually reduced, the thickness is gradually reduced, the safety is gradually poor, the diameter of the pulse valve is gradually reduced, the pulse valve is gradually simplified, the internal leakage is easily caused, the failure rate is gradually high, the maintenance and operation cost is gradually high, and the operation stability and the soot blowing effect are gradually poor; on the other hand, the situation also seriously hinders the research and development enthusiasm of manufacturers on the gas gun type pulse shock wave soot blower, particularly on the pulse valve, and also restricts the technical progress, the industry development and the market application of the gas gun type pulse shock wave soot blower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high sharing formula gas wave blows grey system to solve at least one above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the utility model provides a high sharing formula gas wave blows grey system, include: a gas wave generator and a plurality of launch assemblies;

a plurality of emission assemblies are connected with the gas wave generator through a conduit;

the transmitting component comprises a valve and a transmitter or a transmitter group;

the valve is used for controlling the on-off of the guide pipe between the emitter or the emitter group and the gas wave generator.

Further, the high sharing type gas wave soot blowing system also comprises a sealing fan, wherein an outlet of the sealing fan is connected with the guide pipe and used for filling sealing protection air into the guide pipe.

Preferably, the sealing fans are multiple.

Furthermore, the guide pipe is also communicated with a positive pressure wind source and used for filling sealing protection wind into the guide pipe.

Further, the valve is a butterfly valve, an angle seat valve, a gate valve, a ball valve, a plug valve, a diaphragm valve or a gas bag type pipe clamp valve.

Further, the valve is a pneumatic valve; and a pneumatic control solenoid valve of the pneumatic valve is arranged outside the gas wave generator, the guide pipe and the emission assembly, and the pneumatic control solenoid valve is connected with the pneumatic valve through a hose.

Furthermore, the valve is an electric rotary switch valve, the electric rotary switch valve mainly comprises an electric rotary actuator and a valve body, the electric rotary actuator is installed outside the gas wave generator, the guide pipe and the emission assembly, and the electric rotary actuator is connected with the valve body through a flexible shaft to drive the valve body to be opened and closed.

Furthermore, the gas wave soot blowing system is an explosion pulse shock wave soot blowing system or a gas gun type pulse shock wave soot blowing system using high-temperature gas such as steam and the like as a working medium, and a dynamic sealing pair for controlling on-off in the valve is a hard sealing structure.

Further, the gas wave soot blowing system is a sound wave soot blowing system, the gas wave generator is a sound wave generator or a sound wave generator plus a sound wave amplifier, and the emitter is a sound wave amplifier or a sound wave emitting port.

Furthermore, the gas wave soot blowing system is a pulse shock wave soot blowing system, the gas wave generator is a pulse shock wave generator, and the emitter is a nozzle.

Further, the gas wave generator is provided in plurality.

Further, more than two of the gas wave generators are connected to the conduit at the same time, or alternatively or replaceably connected to one or several ports on the conduit by detachable means.

For example, several pulse wave generators are connected to multiple interfaces of the catheter at the same time, or several sound wave generators are connected to multiple interfaces of the catheter at the same time, or one or several pulse wave generators and one or several sound wave generators are connected to multiple interfaces of the catheter at the same time; the detachable and replaceable mode means that one or a plurality of interfaces on the conduit can be selectively connected with different types of gas wave generators, when in use, one type of gas wave generator is detached after the work is finished, and then another type of gas wave generator is replaced, and the gas wave generator is utilized for secondary soot blowing treatment.

The device further comprises a controller, wherein the controller is connected with the valves and is used for selectively opening and closing one or more valves during soot blowing.

Preferably, the valve further comprises a switch in-place sensor, wherein the switch in-place sensor is arranged corresponding to the valve and used for detecting whether the valve is closed or opened in place;

the controller is connected with the switch in-place sensor and is used for controlling the valve to be opened and closed successively according to a set sequence; and during soot blowing, the switch in-place sensor is used for feeding back information whether the valves are closed or opened in place to the controller, after the controller receives the information that all the valves in the previous soot blowing sequence are closed in place, all the valves in the next soot blowing sequence are opened, and the soot blowing process is started after all the valves in the next soot blowing sequence are opened in place.

During the period of no soot blowing, all the valves for controlling the on-off of the emitters or the emitter groups are in a closed state, and during the soot blowing, the valves for controlling the on-off of each emitter or the emitter groups are opened one by one in sequence according to a certain sequence, so that the soot blowing operation of each emitter or the emitter groups can be performed in sequence. As all the emitters or emitter groups are communicated with each other through the guide pipe to form the emitting system, one gas wave generator can be completely shared.

Further, the conduit comprises a main pipe and a plurality of branch pipes; the plurality of branch pipes are connected in parallel with each other and are connected with the gas wave generator through a main pipe; the branch pipes are sequentially provided with a plurality of emission assemblies at intervals.

Further, the whole branch pipe is U-shaped, O-shaped or square.

Furthermore, in the length direction of the boiler flue, a plurality of branch pipes are arranged in parallel at intervals, and each branch pipe is perpendicular to the length direction of the boiler flue.

Furthermore, the branch pipes are symmetrically arranged in a projection plane perpendicular to the length direction of the boiler flue, or are uniformly arranged in the circumferential direction of the boiler flue at intervals of front, back, left and right, or up, down, left and right.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

originally, the independent gas wave transmitter or transmitter group of original each is connected into a controllable system through pipe and valve creatively, and then can let all gas wave transmitters in the system share gas wave generator, including sharing a plurality of and polytype gas wave generator, broken through the barrier between the gas wave soot blower of different grade type, can adopt the gas wave generator of multiple different grade type in one set of gas wave soot blowing system, opened up very wide technological innovation space and use innovation space for gas wave soot blowing system, not only can reduce the quantity of required gas wave generator by a wide margin, can also improve soot blowing effect by a wide margin, and obtain a series of other beneficial effects:

for a sound wave soot blowing system:

(1) The number of the sound wave generators or the sound wave generators and part or all of the amplifiers required by the sound wave soot blowing system can be greatly reduced, great cost space is created for manufacturers to adopt better sound wave generators and amplifiers, the research and development enthusiasm of the manufacturers on the sound wave generators and the amplifiers is certainly and greatly improved, wide economic space is provided for the research and development of the sound wave generators and the amplifiers, and finally the technical progress, the industry development and the market application of the sound wave soot blower are certainly and greatly promoted.

(2) Manufacturers use better sound generators and amplifiers, which means greater sound power (the sound power refers to the total energy of sound waves radiated by a sound source to the space in a unit time, and is represented by W) and greater sound intensity (the sound intensity refers to the sound wave energy passing through a unit area perpendicular to the sound wave propagation direction in a unit time, namely the energy flow density of the sound waves, and is represented by watt/square meter), which means greater effective soot blowing range and better soot blowing effect, and also means higher reliability and longer service life.

(3) When a plurality of sound wave generators are adopted, each or each group of emitters can select whether to adopt 1 sound wave generator to blow soot or adopt 2 or more sound wave generators to blow soot simultaneously according to specific needs. When 2 or more sound generators are used for simultaneously blowing dust and only a valve of one transmitter is opened, the single transmitter can obtain the added sound power and sound intensity, and the sound pressure superposition effect can be generated, so that the effective dust blowing range and the dust blowing effect of the single transmitter are greatly improved, and the number of dust blowing point positions can be greatly reduced, for example, one third, one half or even more is reduced.

(4) When 2 or more sound wave generators are used for simultaneously blowing soot, and the valves of 2 or more emitters are simultaneously opened during soot blowing, the time for performing one soot blowing operation of the whole system can be greatly shortened, for example, the time is shortened to one half, one third or even shorter time.

(5) The cost of the sound wave soot blowing system can be obviously reduced as long as the valve for controlling the on-off of the emitter is properly selected.

(6) Due to the fact that the valve shields, the sealing protection air exists and the valve is far away from the emitter, the problems that smoke and fly ash in the smoke enter the sound wave generator and the diffuser connected with the sound wave generator due to heat convection and diffusion or positive pressure of the smoke channel during soot blowing are avoided, and the smoke and the fly ash are corroded by condensation water and are stained with ash and blocked are solved, the famous 'old and difficult' problem of the sound wave soot blower is solved, the working reliability and the effect stability of the sound wave soot blower are improved fundamentally, and the service life of the sound wave soot blower is prolonged.

(7) Because the problem of the famous 'old and difficult' that the sound wave generator and the amplifier connected with the sound wave generator are corroded by acid dew and are stuck with ash and blocked ash is solved at one stroke, the sound wave generator and the amplifier connected with the sound wave generator can not adopt corrosion-resistant materials such as stainless steel and the like.

(8) The flute type sound wave soot blower which is most seriously affected by the problem can be widely applied because the famous 'old and difficult' problem that the sound wave generator and the amplifier connected with the sound wave generator are corroded by the acid dew and are stained with ash and blocked ash is solved at one stroke.

(9) For a resonant cavity type sound wave generator, the system does not need to extend into a flue of a boiler any more, so that soot blowing is carried out in a high-temperature area, and expensive high-temperature-resistant stainless steel materials are not needed.

(II) for the explosion pulse shock wave soot-blowing system:

(1) The number of the blasting pulse impulse generators in the blasting pulse shock wave soot-blowing system can be greatly reduced, a great cost-increasing space is created for manufacturers to adopt better blasting pulse impulse generators, the research and development enthusiasm of the manufacturers on the blasting pulse impulse generators is inevitably improved, and finally the technical progress, the industry development and the market application of the blasting pulse shock wave soot-blowing device are inevitably promoted.

(2) Manufacturers adopt better blast pulse impulse generators, which means to strengthen various configurations of the blast pulse impulse generators, increase the blast energy and the blast intensity of the blast pulse impulse generators, further greatly improve the effective soot blowing range and the soot blowing effect of the blast pulse shock wave soot blowing system, and also mean higher safety, stability and reliability and longer service life.

(3) When a plurality of blasting pulse impulse generators are adopted, 1 blasting pulse impulse generator can be adopted for blasting or 2 or more blasting pulse impulse generators can be adopted for blasting at the same time for each or each group of soot blowing points according to specific requirements. When 2 or more blasting pulse impulse generators are used for simultaneous blasting and only a valve of one nozzle is opened, the single nozzle can obtain the added blasting energy, and the overpressure superposition effect of compression shock waves can be generated, so that the effective soot blowing range and soot blowing effect of the single nozzle are greatly improved, and the number of soot blowing points can be greatly reduced, such as one third, one half and even more.

(4) When 2 or more blasting pulse impulse generators are adopted for simultaneously blowing soot, and valves of 2 or more emitters are simultaneously opened during soot blowing, the time of performing one-time soot blowing operation on the whole system can be greatly shortened, for example, the time is shortened to one half, one third or even shorter time.

(5) The installation occupation space of the explosion pulse shock wave soot blowing system is greatly reduced, and the soot blowing point position arrangement is more convenient and flexible.

(6) The transportation and installation cost of the blasting pulse shock wave soot-blowing system is greatly reduced.

(7) The cost of the blast pulse shock wave soot-blowing system can be obviously reduced as long as the valve for controlling the on-off of the nozzle or the nozzle group is properly selected.

(8) And the valve which is more suitable for controlling the on-off of the nozzle or the nozzle group is necessarily attracted to be researched and developed by manufacturers.

(9) Because the attenuation of instantaneous high-speed pulse airflow generated by blasting in the shock wave guide pipe is serious, the blasting pulse shock wave soot-blowing system inevitably and obviously reduces the speed of the pulse airflow ejected from the nozzle, thereby obviously reducing the hazard of the pulse airflow.

(10) Compared with the prior art, the air quantity of the sealing protection required in the period of no soot blowing is greatly reduced due to the shielding of the valve, and the reduction range is up to more than 90 percent.

And (III) for a gas gun type pulse shock wave soot blowing system:

(1) The number of the gas gun type pulse shock wave generators in the gas gun type pulse shock wave soot blowing system can be greatly reduced, a great cost increase space is created for manufacturers to adopt better gas gun type pulse shock wave generators, particularly better pulse valves, the research and development enthusiasm of the manufacturers to the gas gun type pulse shock wave generators, particularly the pulse valves is inevitably greatly improved, and finally the technical progress, the industry development and the market application of the gas gun type pulse shock wave soot blowers, particularly the pulse valves are inevitably greatly promoted.

(2) Manufacturers adopt better gas gun type pulse impulse wave generators, which means that various configurations of the gas gun type pulse impulse wave generators are strengthened, and further, the safety, the stability, the reliability, the effective soot blowing range and the soot blowing effect of the gas gun type pulse impulse wave generators are improved.

(3) When a plurality of gas gun type pulse shock wave generators are adopted, each or each group of soot blowing point positions can select to adopt 1 gas gun type pulse shock wave generator to blow soot or adopt 2 or more gas gun type pulse shock wave generators to blow soot simultaneously according to specific requirements. When 2 or more gas gun type pulse shock wave generators are used for simultaneously blowing dust and only a valve of one nozzle is opened, the single nozzle can obtain the added dust blowing energy, and the overpressure superposition effect of the compression shock wave can be generated, so that the effective dust blowing range and the dust blowing effect of the single nozzle are greatly improved, the defects that the compression shock wave generated by the gas gun type pulse shock wave emitter is not strong and the dust blowing effect of the compression shock wave is not obvious are overcome, and the application range of the gas gun type pulse shock wave emitter is expanded.

(3) The installation occupation space of the gas gun type pulse shock wave soot blowing system is greatly reduced, and the soot blowing point position arrangement is more convenient and flexible.

(4) The transportation and installation cost of the gas gun type pulse shock wave soot blowing system is greatly reduced.

(5) The cost of the gas gun type pulse shock wave soot blowing system can be obviously reduced as long as the valve for controlling the on-off of the nozzles or the nozzle groups is properly selected.

(6) And the valve which is more suitable for controlling the on-off of the nozzle or the nozzle group is necessarily attracted to be researched and developed by manufacturers.

(IV) for sootblowing systems containing multiple gas wave generators, the barriers between the different types of gas wave sootblowers are opened: according to specific requirements, partial or all soot blowing points adopt various types of gas wave soot blowers for soot blowing, including coordinated soot blowing, so that the advantages of the various types of gas wave soot blowers are fully exerted, and the defects of the various types of gas wave soot blowers are avoided. The soot blowing effect can be improved and the soot blowing cost can be reduced as long as the design is proper.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a highly shared gas wave soot blowing system provided in embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of a highly shared gas wave soot blowing system provided in embodiment 2 of the present invention;

fig. 3 is a schematic perspective view of a highly shared gas wave soot blowing system provided in embodiment 3 of the present invention;

fig. 4 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 4 of the present invention;

fig. 5 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 5 of the present invention;

FIG. 6 is a partial enlarged view of the portion B of FIG. 5;

fig. 7 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 6 of the present invention;

fig. 8 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 7 of the present invention;

FIG. 9 is a partial enlarged view of portion A of FIG. 8;

fig. 10 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 8 of the present invention;

fig. 11 is a system schematic diagram of a highly shared gas wave soot blowing system provided in embodiment 9 of the present invention.

Reference numerals:

100-gas wave generator; 101-a resonant cavity acoustic wave generator; 102-a sonic expander; 103-acoustic expander a section; 104-acoustic expander B section; 105-rotary-di type sound generator; 106-a burst pulse impulse generator; 107-resonant cavity type acoustic wave soot blower; 108-a diaphragm sound generator; 200-a catheter; 210-a manifold; 220-main pipe; 230-intermediate connecting pipe; 300-a transmitter; 310-a group of transmitters; 400-a valve; 410-pneumatic control solenoid valves; 420-a hose; 430-an electric actuator; 440-a flexible shaft; 500-sealing the fan.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

Example 1

As shown in fig. 1, the present embodiment discloses a highly shared gas wave soot blowing system, which includes a gas wave generator 100 and a plurality of emission assemblies;

a plurality of launching assemblies connected to the gas wave generator 100 by conduits 200;

the transmitter assembly includes a valve 400 and a transmitter 300 (or a transmitter group of a plurality of transmitters 300);

the valve 400 is used to control the opening and closing of the conduit 200 between the emitter 300 or emitter group and the gas wave generator 100.

The conduit 200 comprises a main pipe 220 and a plurality of branch pipes 210; a plurality of branch pipes 210 are connected in parallel with each other and connected to the gas wave generator 100 through a main pipe 220; a plurality of transmitting assemblies are sequentially arranged on the branch pipe 210 at intervals; in the length direction of the boiler flue, a plurality of the branch pipes 210 are arranged in parallel at intervals. Wherein each branch pipe 210 is perpendicular to the length direction of the boiler flue.

Specifically, the embodiment is a highly-shared combustion explosion pulse shock wave soot blowing system installed on a horizontal flue of a horizontal waste incineration power generation waste heat boiler. The gas wave generator 100 is a burst pulse impulse generator.

The low-temperature superheater, the second-stage evaporator, the first-stage economizer, the second-stage economizer and the third-stage economizer which are sequentially arranged in the horizontal flue from front to back are all 5-stage heat exchangers which adopt explosion pulse shock wave soot blowers, 1 soot blowing point position is vertically arranged on the left side wall and the right side wall of the smoke inlet of each stage of heat exchanger, 4 soot blowing point positions of each stage are arranged, and 20 soot blowing point positions of the 5-stage heat exchanger are arranged.

In a projection plane perpendicular to the length direction of the boiler flue, two branch pipes 210 are symmetrically distributed outside the left side wall and the right side wall of each stage of heat exchanger, so that a pair of branch pipes is formed; in the length direction of the boiler flue, 5 pairs of branch pipes are arranged in parallel at intervals; each pair of branch pipes is respectively arranged corresponding to the first-stage heat exchanger.

The branch pipe 210 is generally U-shaped, and two ends of the branch pipe are respectively provided with one emitter 300 (or emitter group), and each emitter 300 further forms one soot blowing point.

In the present embodiment, the emitter 300 is a spout; at each soot blowing point, a nozzle penetrates through the furnace wall and extends into the flue, the two nozzles on the same side of each stage of heat exchanger are connected through a branch pipe 210, and all the branch pipes 210 are connected through a main pipe 220 arranged horizontally. The outer diameters of the spout, the branch pipe 210 and the main pipe 220 are phi 159mm.

Each spout is provided with a valve 400; preferably, the valve 400 is a pneumatic butterfly valve, preferably a metal hard seal, whose housing is integral with the spout. In the middle of the main pipe 220, 1 set of blasting pulse impulse generator with a volume of 120 liters and an outlet external diameter phi of 159mm is installed.

When the soot is not blown, all the pneumatic butterfly valves are in a closed state. During soot blowing, one or two or even a plurality of pneumatic butterfly valves can be opened according to a certain sequence, then soot blowing is carried out through the burning explosion of the burning pulse impulse generator, and the opened pneumatic butterfly valves are closed after the soot blowing is finished; then, opening another one or two or more pneumatic butterfly valves according to a certain sequence, blowing dust by the combustion and explosion of the combustion and explosion pulse impulse generator, and closing the opened pneumatic butterfly valves after the dust is blown; and repeating the steps until the soot blowing of the whole system is finished.

On the basis of the above technical solution, more preferably, the present embodiment may further include a sealing fan 500; an air outlet of the sealing fan 500 is connected to the main pipe 220 for filling sealing protection air into the duct 200.

Whether the soot blowing operation is carried out or not, the sealing fan 500 is always in operation, the inside of the guide pipe 200 is always kept in a certain positive pressure state, certain smoke at the positive pressure flue part at a certain time is prevented from entering the guide pipe 200 through the inner leakage of the pneumatic butterfly valve on the nozzle, and the smoke short circuit caused by the inner leakage of the pneumatic butterfly valve arranged on the nozzle due to the different pressures of the flue sections where the nozzles are positioned among the nozzles communicated through the guide pipe 200 can be avoided.

On the basis of the technical scheme, more preferably, the embodiment can also be provided with a set of 'PLC + touch screen' program controller, and the program controller is connected with each pneumatic butterfly valve through a control cable and is used for selectively opening and closing one or a plurality of pneumatic butterfly valves during soot blowing.

On the basis of the technical scheme, more preferably, each pneumatic butterfly valve is provided with a switch in-place sensor, and the "PLC + touch screen" program controller is further connected with the switch in-place sensors of all the pneumatic butterfly valves, and is used for opening the pneumatic butterfly valve in the next soot blowing sequence and starting the soot blowing process after the pneumatic butterfly valve in the previous soot blowing sequence is closed in place and the pneumatic butterfly valve in the next soot blowing sequence is opened in place during soot blowing.

In this embodiment, the gas wave generator 100 may also be a gas cannon type pulse wave generator.

Example 2

As shown in fig. 2, the sootblowing system of the present embodiment is different from that of embodiment 1 in that:

(1) The present embodiment includes two U-shaped branch pipes 210; each branch pipe 210 is parallel to the length direction of the boiler flue. The two branch pipes 210 are respectively arranged at intervals up and down, each branch pipe 210 is respectively provided with a plurality of transmitting assemblies at intervals, and each transmitting assembly comprises a valve 400 and a transmitter 300; the emitter 300 is a spout. Thereby forming an upper layer of nozzle and a lower layer of nozzle; the upper and lower U-shaped branch pipes 210 are connected by a main pipe 220, and the main pipe 220 is connected with a blast pulse impulse generator.

(2) The volume of the blasting pulse impulse generator is 90 liters;

(3) Pneumatic control solenoid valves 410 controlling pneumatic butterfly valves are all fixed outside the burst pulse impulse generator, nozzles, ducts, for example on the furnace wall, these pneumatic control solenoid valves 410 being connected to the pneumatic butterfly valves by hoses 420. The pneumatic control electromagnetic valves 410 are all fixed at places outside the blasting pulse impulse generator, the nozzle and the conduit, so that strong interference and other adverse effects of strong vibration generated during blasting and soot blowing on the pneumatic control electromagnetic valves 410 can be avoided;

(4) The sealing fan 500 is provided with two, which are connected to the two branch pipes 210, respectively. One is in the running state all the time, and the other is only running when the soot blowing operation is carried out, so that the sealing air volume which needs to be greatly increased after the nozzle valve is opened is compensated.

(5) An intermediate connection pipe 230 for connecting the upper and lower U-shaped branch pipes 210 to each other is further provided between the two U-shaped branch pipes.

Example 3

As shown in fig. 3, this embodiment is substantially the same as embodiment 1, except that: the PLC + touch screen program controller is connected with the original 120L volume burst pulse generator and is also connected with the 60L volume burst pulse generator besides the original 1 120L volume burst pulse generator.

During soot blowing, according to the specific situation of each soot blowing point, when the required deflagration soot blowing energy is small, only a deflagration pulse impulse generator with the volume of 60 liters can deflagrate; when the required deflagration soot blowing energy is larger, only the deflagration pulse impulse wave generator with the volume of 120 liters can deflagrate; when the required deflagration soot blowing energy is larger, 2 deflagration pulse impulse generators can be simultaneously deflagrated.

When only the explosion pulse shock wave generator with the volume of 60 liters is subjected to explosion, compared with the explosion pulse shock wave generator with the volume of 120 liters for the premixed combustible gas, the explosion pressure, namely the overpressure of the compression shock wave generated by the explosion, is much higher without a useless space of 60 liters, so the soot blowing effect is also much better.

When 2 explosion pulse impulse generators simultaneously explode and blow dust, the explosion and dust blowing energy is the sum of the explosion and dust blowing energy of the 2 explosion pulse impulse generators, and when a dust blowing system only opens a pneumatic butterfly valve of 1 nozzle, the explosion and dust blowing energy of a single nozzle can be greatly improved, so that the dust blowing range and the dust blowing effect of the single nozzle are greatly improved.

In this embodiment, the gas wave generator 100 may also be a gas cannon type pulse wave generator.

Example 4

As shown in FIG. 4, the embodiment is a highly shared explosion pulse shock wave soot blowing system arranged on a shaft flue at the tail part of a circulating fluidized bed coal-fired boiler with the evaporation capacity of 75 t/h.

The tail shaft flue is internally provided with 9 stages of heat exchangers including a high-temperature superheater, a medium-temperature superheater, a low-temperature superheater, a high-temperature economizer, a medium-temperature economizer, a low-temperature economizer, a high-temperature air preheater, a medium-temperature air preheater and a low-temperature air preheater in sequence from top to bottom, explosion pulse shock wave soot blowers are adopted, soot blowing point positions are arranged on the left side wall and the right side wall of a smoke inlet part of each stage of heat exchanger, except for the lowest low-temperature air preheater, 1 soot blowing point position is symmetrically arranged on the left side wall and the right side wall of the low-temperature air preheater, 2 soot blowing point positions on the left side wall and 19 soot blowing point positions on the 9 stages of heat exchangers are arranged.

At each soot blowing point, one emitter 300 extends into the flue through the furnace wall, wherein 2 emitters at the left side of the lowest low-temperature air preheater are connected into an emitter group 310, in the embodiment, the emitter 300 is a nozzle, the emitter group 310 is a nozzle group, the nozzle group is connected with another 17 nozzles through 1 inverted-U-shaped conduit 200, and both ends of the conduit 200 are closed.

The inlet ends of the nozzle group and the other 17 nozzles are provided with valves 400, and the valves 400 are electric plug valves in the embodiment.

The top middle of the inverted U-shaped guide pipe 200 is connected with 1 gas wave generator 100, the gas wave generator 100 is a blasting pulse impulse wave generator with the volume of 180 liters, and the outer diameter of an outlet, the outer diameters of all nozzles, all electric plug valves and the outer diameter of the guide pipe 200 are phi 219mm.

The electric actuators 430 of the electric plug valve are all installed and fixed at places outside the blasting pulse impulse generator, the guide pipe 200 and the emitter 300, for example, all installed and fixed on angle steel beams welded on a furnace wall, so as to avoid strong interference and other adverse effects of strong vibration generated during blasting and soot blowing on the electric actuators, and the electric actuators 430 are connected with the electric plug valve through flexible shafts 440.

On the basis of the above technical solution, more preferably, one end of the duct 200 of this embodiment may be further connected to a primary cold air pipe (positive pressure air source) of the boiler, so as to fill the duct 200 with the sealing protection air, and maintain the duct 200 in a certain positive pressure state all the time, thereby preventing some flue gas at the positive pressure flue portion from entering the duct 200 through the internal leakage of the electric plug valve on the nozzle, and also avoiding the occurrence of flue gas short circuit due to the different pressures of the flue cross sections and the internal leakage of the electric plug valve due to the different pressures of the flue cross sections.

The present embodiment is not provided with a special program controller, and soot blowing program control is carried out through a DCS system of the unit.

In this embodiment, the gas wave generator 100 may also be a gas cannon type pulse wave generator.

Example 5

As shown in fig. 5 and 6, the boiler of the present embodiment is completely the same as that of embodiment 4, and the soot blowing point arrangement scheme is also basically the same as that of embodiment 3, and the boiler is provided with an inverted U-shaped duct 200, one end of the duct 200 is closed, and the other end is connected with a primary cold air pipe of the boiler.

This embodiment is different from embodiment 4 in that:

(1) The left side wall of the final-stage air preheater is only provided with 1 soot blowing point location, so the number of the soot blowing point locations is 18 in total;

(2) The gas wave soot blowing system adopts a sound wave soot blowing system;

(3) The gas generator 100 adopts a resonant cavity type acoustic wave soot blower, and mainly comprises a resonant cavity acoustic wave generator 101 and an acoustic wave amplifier 102;

(4) The gas wave transmitter 300 adopts a sound wave transmitting tube;

(5) The valve 400 is a pneumatic ball valve;

(6) The outer diameter of the outlet of the sound wave expander 102, the outer diameter of the inverted U-shaped main pipe 200, the outer diameter of the sound wave transmitting pipe and the outer diameter of the pneumatic ball valve are all phi 300mm.

Example 6

As shown in fig. 7, this embodiment is substantially the same as embodiment 4, except that:

(1) The left side wall of the last stage air preheater is only provided with 1 soot blowing point, so the number of the soot blowing point is 18 in total;

(2) The gas wave generator 100 includes 2 burst pulse wave generators 106 and 4 resonant cavity acoustic soot blowers (resonant cavity acoustic wave generator + amplifier) 107.

During soot blowing, according to the specific conditions of each soot blowing point: only 1 explosion pulse impulse generator is subjected to explosion; only 2 blasting pulse impulse generators are simultaneously blasted; only 1 resonant cavity type sound wave soot blower is used for blowing soot; only 2 or 3 or 4 resonant cavity type sound wave soot blowers are used for simultaneously blowing soot; 2 blasting pulse impulse generators and 4 resonant cavity type acoustic soot blowers are used for continuously performing soot blowing according to a certain sequence or alternately performing soot blowing according to a certain sequence and times; other permutation and combination are used for continuously blowing soot according to a certain sequence or alternatively blowing soot according to a certain sequence and times.

In this embodiment, 1 or all of the 2 burst pulse wave generators 106 may also be gas-cannon pulse wave generators.

Example 7

As shown in fig. 8 and 9, the present embodiment is a highly shared acoustic soot blowing system installed on the walls of the flue gas inlet of one to three-stage coal economizers of a large-scale pulverized coal boiler of a 600MW unit, the gas generator 100 is a resonant cavity acoustic generator, the emitter 300 is an acoustic emission tube, 5 soot blowing points are respectively arranged on the front wall and the rear wall of each stage of coal economizer, 3 soot blowing points are respectively arranged on the left side wall and the right side wall, 16 soot blowing points are arranged on the single-stage coal economizer, and the total number of the 48 soot blowing points of the 3-stage coal economizer.

A sound wave transmitting pipe penetrates through the furnace wall and extends into the flue at each soot blowing point, the inlet end of each sound wave transmitting pipe is connected with a valve 400, the valve is a three-way pneumatic angle seat valve, and the connector is welded; the three-way type pneumatic angle seat valves of 16 welding interfaces outside the peripheral furnace wall of each economizer are connected into 1 square closed loop through a set of branch pipes 210.

The 3 square closed loops are connected by 1 main pipe 220 and 1 intermediate connecting pipe 230, and the intermediate connecting pipes 230 and the main pipe 220 are symmetrically arranged.

As shown in fig. 9, a short tube 250 with a closed single end is externally connected to the main tube 220 near the middle, 1 gas wave generator 100 is installed in the short tube 250, and the gas wave generator 100 is a resonant cavity sound wave generator, also called a hadamard whistle.

In the present embodiment, the catheter 200 includes 1 main tube 220, 1 intermediate tube 230, and 3 sets of branch tubes 210.

When no soot is blown, all the three-way type pneumatic angle seat valves are in a closed state. During soot blowing, compressed air can be firstly communicated to start a sound wave generator of the resonant cavity, then according to a certain sequence, one of the three-way type pneumatic angle seat valves is firstly opened to blow soot for a plurality of seconds and then closed, and then the other three-way type pneumatic angle seat valve is opened according to a certain sequence to blow soot for a plurality of seconds and then closed, and the rest is done in this way until the whole system finishes soot blowing.

On the basis of the technical scheme, more preferably, a set of PLC program controller can be further provided in the embodiment, and the program controller is connected with each three-way type pneumatic angle seat valve through a control cable and is used for selectively opening and closing one or more three-way type pneumatic angle seat valves during soot blowing.

On the basis of the technical scheme, more preferably, each three-way type pneumatic angle seat valve is provided with a switch in-place sensor, and the PLC is further connected with the switch in-place sensors of all the three-way type pneumatic angle seat valves and is used for opening the three-way type pneumatic angle seat valve in the next soot blowing sequence and monitoring whether the three-way type pneumatic angle seat valve is opened in place or not after the three-way type pneumatic angle seat valve in the previous soot blowing sequence is closed in place during soot blowing.

Example 8

As shown in fig. 10, this embodiment is substantially the same as embodiment 7 except that:

(1) The gas wave generator 100 comprises a rotary dike type sound wave generator 105, a sound wave amplifier A section 103 and a sound wave amplifier B section 104 which are connected in sequence; while the transmitter 300 employs a sonic expander section C; and the sound wave generator can also adopt a diaphragm sound wave generator.

(2) The valve 400 connected with the inlet end of the C section of each acoustic wave expander is an electric air valve, the electric air valves are connected in a flange mode, and the inlets of 16 electric air valves outside the peripheral furnace wall of each economizer are connected through a closed loop branch pipe 210 in a shape of a Chinese character kou.

(3) One end of the main pipe 220 is connected with a primary cold air pipe of the boiler and is used for filling sealing protection air into the guide pipe 200, so that the interior of the guide pipe 200 is always kept in a certain positive pressure state, smoke at a positive pressure flue position at a certain time is prevented from entering the guide pipe 200 through internal leakage of an electric air valve on a nozzle, and smoke short circuit caused by internal leakage of the electric air valve due to different pressures of flue sections can be avoided among the emitters 300 connected through the guide pipe 200.

Example 9

As shown in fig. 11, this embodiment is substantially the same as embodiment 8 except that:

the gas wave generator 100 comprises 3 rotary-type sound wave generators 105 and connects the acoustic amplifier a section 103 and the acoustic amplifier B section 104, and 3 membrane sound wave generators 108 and connects the acoustic amplifier a section 103 and the acoustic amplifier B section 104.

During soot blowing, according to the specific conditions of each soot blowing point: only 1 rotary flute type sound wave generator is used for blowing dust; only 2 or 3 rotary flute type sound wave generators simultaneously blow dust; only 1 diaphragm type sound wave generator blows dust; only 2 or 3 diaphragm sound wave generators are allowed to simultaneously blow soot; simultaneously blowing dust for all the 3 rotary flute type sound wave generators and the 3 diaphragm type sound wave generators; continuously blowing soot by 3 rotary flute type sound wave generators and 3 diaphragm type sound wave generators according to a certain sequence or alternately blowing soot according to a certain sequence and times; other possible permutation and combination are used for continuously blowing the soot according to a certain sequence or alternately blowing the soot according to a certain sequence and times.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (18)

1. High sharing formula gas wave soot blowing system, its characterized in that includes: a gas wave generator and a plurality of emission assemblies;

a plurality of emission assemblies are connected with the gas wave generator through a conduit;

the transmitting component comprises a valve and a transmitter or a transmitter group;

the valve is used for controlling the on-off of the guide pipe between the emitter or the emitter group and the gas wave generator.

2. The gas wave sootblowing system of claim 1, further comprising a sealing fan, an outlet of the sealing fan being connected to the conduit for charging a sealing protection wind into the conduit.

3. A gas wave sootblowing system as claimed in claim 2, wherein there are a plurality of said sealing fans.

4. The gas wave sootblowing system of claim 1, wherein the conduit is further in communication with a positive pressure air source for charging the conduit with seal protection air.

5. The gas wave sootblowing system of claim 1, wherein the valve is a butterfly valve, a horn seat valve, a gate valve, a ball valve, a plug valve, a diaphragm valve, or a balloon pinch valve.

6. The gas wave soot blowing system of claim 1, wherein the valve is a pneumatic valve; and a pneumatic control solenoid valve of the pneumatic valve is arranged outside the gas wave generator, the guide pipe and the emission assembly, and the pneumatic control solenoid valve is connected with the pneumatic valve through a hose.

7. The gas wave soot blowing system of claim 1, wherein the valve is an electric rotary switch type valve, the electric rotary switch type valve mainly comprises an electric rotary actuator and a valve body, the electric rotary actuator is installed outside the gas wave generator, the conduit and the emission assembly, and the electric rotary actuator is connected with the valve body through a flexible shaft to drive the valve body to open and close.

8. The gas wave soot blowing system of claim 1, which is an explosion pulse shock wave soot blowing system or a gas gun type pulse shock wave soot blowing system using high temperature gas such as steam as a working medium, wherein a dynamic sealing pair for controlling on-off in the valve is a hard sealing structure.

9. The gas wave soot blowing system of claim 1, which is a sonic soot blowing system, wherein the gas wave generator is a sound wave generator or a sound wave generator + a sound wave amplifier, and the emitter is a sound wave amplifier or a sound wave emitting port.

10. The gas wave soot blowing system of claim 1, wherein said gas wave soot blowing system is a pulsed shock wave soot blowing system, said gas wave generator is a pulsed shock wave generator, and said emitter is a nozzle.

11. The gas wave sootblowing system of claim 1, wherein the gas wave generator is plural in number.

12. A gas wave sootblowing system according to claim 1, wherein more than two gas wave generators are connected to said conduit simultaneously or alternatively or replaceably connected to one or several interfaces on the conduit by detachable means.

13. The gas wave sootblowing system of claim 1, further comprising a controller connected to said valves for selectively opening and closing one or more of said valves during sootblowing.

14. The gas wave soot blowing system of claim 13, further comprising a switch-in-place sensor, disposed in correspondence with the valve, for detecting whether the valve is closed or opened in place;

the controller is connected with the switch in-place sensor and is used for controlling the valve to be opened and closed successively according to a set sequence; and during soot blowing, the switch in-place sensor is used for feeding back information whether the valves are closed or opened in place to the controller, the controller opens all the valves in the next soot blowing sequence after receiving that all the valves in the previous soot blowing sequence are closed in place, and opens the soot blowing process after all the valves in the next soot blowing sequence are opened in place.

15. The gas wave sootblowing system of claim 1, wherein the conduit comprises a main tube and a number of branch tubes; the plurality of branch pipes are connected in parallel with each other and are connected with the gas wave generator through a main pipe; the branch pipes are sequentially provided with a plurality of emission assemblies at intervals.

16. The gas wave sootblowing system of claim 15, wherein the branch tubes are generally U-shaped, O-shaped, or square-shaped.

17. A gas wave sootblowing system as claimed in claim 15, wherein a plurality of said branch pipes are arranged in parallel at intervals in a length direction of the boiler flue, each branch pipe being perpendicular to the length direction of the boiler flue.

18. The gas wave sootblowing system of claim 15, wherein said branch pipes are symmetrically arranged in a projection plane perpendicular to a length direction of the boiler flue, or are uniformly spaced around the boiler flue, front-back, left-right, or up-down, left-right.

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