Sound wave soot blowing matrix and boiler

Abstract

The utility model discloses a sound wave soot blowing matrix and boiler relates to boilers technical field, wherein the sound wave soot blowing matrix includes a plurality of sound wave soot blowing units, air compressor and compressed air buffer device, the plurality of sound wave soot blowing units are staggered along the depth direction of boiler at interval, each branch pipeline is equipped with soot blower, and the compressed air buffer device is equipped with the sound wave soot blower. The soot blowers are evenly arranged at intervals, soot blowing openings are formed in the positions, facing different positions of the hearth wall of the boiler, of the soot blowers, the air compressor is provided with a main pipeline, the main pipeline is communicated with the branch pipelines, and the compressed air buffering device is arranged on the main pipeline and used for maintaining pressure of the pipelines. According to the technical scheme provided by the utility model, a plurality of soot blowers are combined to form the soot blowing matrix, so that the heating surface of the boiler can be fully covered and efficiently cleaned, and the damage to the heating surface is also avoided. The matrix design can ensure the uniform distribution of sound wave energy, enhance the cleaning effect on accumulated dust, and reduce the cleaning blind area at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to an acoustic wave soot blowing matrix and a boiler. Background Art

[0002] A boiler is a device that converts the heat energy generated by fuel combustion into thermal energy. It is widely used in industrial, commercial and residential areas. The boiler generates high-temperature flue gas by burning fuel. The heat in the flue gas is transferred to the water or other medium in the boiler, which heats it and produces steam, hot water or hot air. The main components of a boiler include burners, furnaces, flues, water-cooled walls, superheaters, economizers and control systems. There are many types and uses of boilers, including industrial boilers, power station boilers, hot water boilers, steam boilers and hot air boilers.

[0003] Boiler soot blowing is an important maintenance work during the operation of the boiler. Its purpose is to remove the soot accumulated on the heating surface of the boiler to ensure the thermal efficiency and safe operation of the boiler. Soot accumulation will reduce the heat exchange efficiency of the boiler, increase energy consumption, and may even cause problems such as overheating and coking of the boiler, affecting the normal operation of the boiler. Therefore, regular soot blowing is a necessary measure to ensure the efficient and safe operation of the boiler.

[0004] In the relevant technology, the main soot blowing method for large boilers in power plants is steam soot blowing. Steam soot blowers use high-temperature and high-pressure steam to flow through a rotating nozzle and spray at high speed, generating a large impact force to blow away the accumulated soot on the heating surface. However, due to the large width and depth of the boiler, the use of steam soot blowing has problems such as soot blowing dead angles and poor soot blowing effects, and will have an adverse effect on the heating surface. Especially in the low-load operation stage of the unit, steam soot blowing is difficult to play a good role and also causes huge disturbances to combustion. Utility Model Content

[0005] The main purpose of the utility model is to provide an acoustic wave soot blowing matrix and a boiler, aiming to solve the problem of dead angles in soot blowing on the heating surface in the central area of ​​the furnace of a large boiler.

[0006] To achieve the above purpose, the acoustic wave soot blowing matrix proposed in the utility model is applied to boiler soot blowing, and includes:

[0007] A plurality of sonic sootblowing units, wherein the plurality of sonic sootblowing units are staggered and spaced in the depth direction of the boiler, each of the sonic sootblowing units comprises a plurality of branch pipes, wherein the plurality of branch pipes are arranged in parallel and spaced, each of the branch pipes is provided with a sootblower, and the plurality of sootblower are evenly spaced and are provided with sootblowing ports at different positions of the furnace wall of the boiler;

[0008] An air compressor, wherein the air compressor is provided with a main pipeline, wherein the main pipeline is connected to each of the branch pipelines; and

[0009] A compressed air buffer device is arranged in the main pipeline and is used to maintain the pressure of the pipeline.

[0010] In one embodiment, the sootblower comprises:

[0011] A resonance part, the resonance part is connected to the branch pipe, and the resonance part forms a resonance cavity;

[0012] A solenoid valve, which is disposed in the branch pipeline and is used to control the start and stop of the resonance part; and

[0013] A filter screen is arranged on the branch pipeline.

[0014] In one embodiment, the resonance portion gradually expands from an end close to the branch pipe toward an end far from the branch pipe.

[0015] In one embodiment, the filter screen is provided with a sedimentation portion, and the sedimentation portion is connected to the branch pipe and is arranged at an angle to the branch pipe.

[0016] In one embodiment, the soot blower further comprises a manual air intake valve, and the manual air intake valve is arranged on the branch pipeline.

[0017] In one embodiment, at least a portion of the branch pipe between the resonance portion and the solenoid valve is a hose.

[0018] In one embodiment, the sonic sootblowing matrix further comprises a flow meter, and the flow meter is disposed in the main pipeline.

[0019] In one embodiment, the sonic sootblowing matrix comprises four sonic sootblowing units.

[0020] In one embodiment, the branch pipeline is made of high temperature resistant stainless steel.

[0021] The utility model also proposes a boiler, comprising an acoustic wave soot blowing matrix, wherein the acoustic wave soot blowing matrix comprises:

[0022] A plurality of sonic sootblowing units, wherein the plurality of sonic sootblowing units are staggered and spaced in the depth direction of the boiler, each of the sonic sootblowing units comprises a plurality of branch pipes, wherein the plurality of branch pipes are arranged in parallel and spaced, each of the branch pipes is provided with a sootblower, and the plurality of sootblower are evenly spaced and are provided with sootblowing ports at different positions of the furnace wall of the boiler;

[0023] An air compressor, wherein the air compressor is provided with a main pipeline, wherein the main pipeline is connected to each of the branch pipelines; and

[0024] A compressed air buffer device is arranged in the main pipeline and is used to maintain the pressure of the pipeline.

[0025] In the technical solution of the utility model, a sonic sootblowing matrix and a boiler are proposed, wherein the sonic sootblowing matrix includes a plurality of sonic sootblowing units, an air compressor and a compressed air buffer device, a plurality of sonic sootblowing units are arranged at staggered intervals along the depth direction of the boiler, each sonic sootblowing unit includes a plurality of branch pipes, a plurality of branch pipes are arranged in parallel and spaced, each branch pipe is provided with a plurality of sootblowers, a plurality of sootblowers are arranged at even intervals, and sootblowing ports are provided at different positions of the furnace wall of the boiler, and a plurality of sootblowers are combined to form a sootblowing matrix, which can achieve full coverage and efficient cleaning of the heating surface of the boiler and avoid damage to the heating surface. This matrix design can ensure uniform distribution of sonic energy, enhance the cleaning effect of dust accumulation, and reduce cleaning blind spots. In addition, the sonic sootblowing matrix can be customized according to the shape and size of the boiler, improve cleaning efficiency, and reduce energy consumption and maintenance costs. This design is also convenient for automatic control, and can automatically adjust the frequency and intensity of the sonic waves according to the operating status and degree of dust accumulation of the boiler to achieve intelligent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of an acoustic wave soot blowing matrix provided by the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure of the middle sootblower;

[0029] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0030] Description of Figure Numbers:

[0031] 1000, sonic sootblowing matrix; 1, sonic sootblowing unit; 11, branch pipeline; 112a, hose; 12, sootblower; 121, resonance part; 122, solenoid valve; 123, filter; 123a, sedimentation part; 124, manual air inlet valve; 2, air compressor; 21, main pipeline; 211, ring pipe; 3, compressed air buffer device; 4, flow meter.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] A boiler is a device that converts the heat energy generated by fuel combustion into thermal energy. It is widely used in industrial, commercial and residential areas. The boiler generates high-temperature flue gas by burning fuel. The heat in the flue gas is transferred to the water or other medium in the boiler, which heats it and produces steam, hot water or hot air. The main components of a boiler include burners, furnaces, flues, water-cooled walls, superheaters, economizers and control systems. There are many types and uses of boilers, including industrial boilers, power station boilers, hot water boilers, steam boilers and hot air boilers.

[0037] Boiler soot blowing is an important maintenance work during the operation of the boiler. Its purpose is to remove the soot accumulated on the heating surface of the boiler to ensure the thermal efficiency and safe operation of the boiler. Soot accumulation will reduce the heat exchange efficiency of the boiler, increase energy consumption, and may even cause problems such as overheating and coking of the boiler, affecting the normal operation of the boiler. Therefore, regular soot blowing is a necessary measure to ensure the efficient and safe operation of the boiler.

[0038] In the related technology, the main soot blowing method for boilers is steam soot blowing. Steam soot blowers use high-temperature and high-pressure steam to flow through a rotating nozzle and spray at high speed, generating a large impact force to blow away the accumulated soot on the heating surface. However, steam soot blowing has problems such as soot blowing dead angles and poor soot blowing effects, and will have an adverse effect on the heating surface. Especially in the low-load operation stage of the unit, steam soot blowing is difficult to play a good role and also causes huge disturbances to combustion.

[0039] In order to solve the above problems, the utility model proposes an acoustic sootblowing matrix, which aims to solve the problem of dead corners in sootblowing of the heating surface in the central area of ​​the furnace of a large boiler. Figures 1 to 3 This is a structural schematic diagram of an embodiment of the acoustic wave soot blowing matrix provided by the utility model.

[0040] Please refer to Figures 1 to 3 The utility model proposes an acoustic sootblowing matrix 1000, comprising a plurality of acoustic sootblowing units 1, an air compressor 2 and a compressed air buffer device 3. The plurality of acoustic sootblowing units 1 are staggered and spaced along the depth direction of the boiler. Each acoustic sootblowing unit 1 comprises a plurality of branch pipes, which are arranged in parallel and spaced apart. Each branch pipe is provided with a sootblower 12. The plurality of sootblower 12 are evenly spaced apart and are provided with sootblowing ports at different positions of the furnace wall of the boiler, respectively. The air compressor 2 is provided with a main pipe, which is connected to each branch pipe. The compressed air buffer device 3 is arranged in the main pipe and is used to maintain the pressure of the pipe.

[0041] In the technical solution of the utility model, a sonic sootblowing matrix 1000 and a boiler are proposed, wherein the sonic sootblowing matrix 1000 includes a plurality of sonic sootblowing units 1, an air compressor 2 and a compressed air buffer device 3, wherein the plurality of sonic sootblowing units 1 are arranged at staggered intervals along the depth direction of the boiler, each sonic sootblowing unit 1 includes a plurality of branch pipes, the plurality of branch pipes are arranged in parallel and at intervals, each branch pipe is provided with a sootblower 12, the plurality of sootblower 12 are arranged at even intervals, and sootblowing ports are provided at different positions of the furnace wall of the boiler, respectively, by combining a plurality of sootblower 12 to form a sootblowing matrix, the heating surface of the boiler can be fully covered and efficiently cleaned, and damage to the heating surface can be avoided. This matrix design can ensure that the energy of the sonic wave is evenly distributed, enhance the cleaning effect of the accumulated dust, and reduce the cleaning blind spots. In addition, the matrix sootblower 12 can be customized according to the shape and size of the boiler, improve the cleaning efficiency, and reduce energy consumption and maintenance costs. This design also facilitates automated control and can automatically adjust the frequency and intensity of the sound waves according to the operating status of the boiler and the degree of ash accumulation to achieve intelligent cleaning.

[0042] To further enhance the sonic soot blowing effect, each soot blower 12 includes a resonance portion 121. For details, please refer to Figure 2The resonance part 121 is trumpet-shaped, and is expanded from one end of the branch pipe toward one end of the furnace wall. The resonance part 121 forms a resonance cavity, which can effectively improve the performance of the soot blower 12. This design can enhance the propagation and focusing effect of sound waves, increase the energy density of sound waves, and thus enhance the soot removal ability of the soot blower 12. In addition, the trumpet-shaped resonance cavity can also improve the uniformity of sound waves, reduce energy loss, and improve the cleaning efficiency of the soot blower 12. This design also facilitates the matching of the soot blower 12 with the heating surface of the boiler to achieve efficient cleaning. Therefore, the soot blower 12 with a trumpet-shaped resonance cavity has significant advantages in improving the thermal efficiency and operation safety of the boiler.

[0043] It should be noted that the utility model does not limit the number of sonic sootblowing units 1, the number of layers, and the number of sootblowers 12 in each sonic sootblowing unit 1. In one embodiment of the utility model, every two sonic sootblowing units form a group, and each sonic sootblowing unit includes 18 sootblowers, that is, each group contains a total of 36 sootblowers 12. In one purge operation, the first sootblower 12 starts working, and the purge time is 30 seconds. After an interval of 10 seconds, the second sootblower 12 starts working, and so on until all sootblowers 12 of the sonic sootblowing unit 1 complete the purge operation. When the first group is purged, the second group is purged. In order to control the individual switch of each sootblower 12, thereby realizing matrix-type intelligent purge, each sootblower 12 is matched with a solenoid valve 122, and the solenoid valve 122 is used to control the program to realize the start and stop of the sootblower 12. In order to realize the secondary insurance of controlling the start and stop of the soot blower 12, the soot blower 12 is also matched with a manual air intake valve 124, and the start and stop control can be realized by manually controlling the on and off of the manual air intake valve 124.

[0044] In order to prevent the soot blower 12 from blowing out impurities that affect the normal operation of the furnace, a filter 123 is provided at the front end of each soot blower 12. The filter 123 has a sedimentation portion 123a. The filter 123 can intercept large particles of impurities. The intercepted impurities will enter the sedimentation portion 123a for sedimentation, and the impurities will be cleaned by manual regular cleaning.

[0045] In order to improve the flexibility of the soot blower 12 and ensure that the air pressure does not impact the soot blower 12, at least part of the structure between the resonance part 121 and the solenoid valve 122 is a hose 112a. For details, please refer to Figure 3 , part of the pipeline between the sootblower 12 and the air compressor 2 is set as a hose 112a, which can effectively reduce the stress of the branch pipeline caused by temperature changes, vibrations or pressure fluctuations. The hose 112a has good flexibility and can adapt to various deformations in the pipeline system, reducing the risk of pipeline rupture. In addition, the hose 112a can also reduce noise and vibration, and improve the stability and safety of the entire system. This design is also easy to install and maintain, and improves the flexibility and reliability of the system.

[0046] In order to monitor the air pressure in the pipeline, the sonic soot blowing matrix 1000 also includes a flow meter 4, which is arranged in the main pipeline. For details, please refer to Figure 3 A flow meter 4 is provided in the pipeline between the soot blower 12 and the air compressor 2, which can monitor and control the flow of compressed air in real time, ensuring that the sonic soot blower 12 is supplied with an appropriate amount of air to achieve the best soot blowing effect. The flow meter 4 can help adjust and optimize the operating parameters of the system, reduce energy waste, and improve the overall efficiency of the system. In addition, the flow meter 4 can also be used to monitor the leakage of the pipeline system, discover and solve problems in time, and ensure the normal operation and safety of the system.

[0047] The utility model also proposes a boiler, which includes an acoustic sootblowing matrix 1000. The specific structure of the acoustic sootblowing matrix 1000 refers to the above-mentioned embodiment. Since the boiler adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0048] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sonic sootblowing matrix (1000), applied to boiler sootblowing, characterized in that: include: A plurality of sonic sootblowing units (1), the plurality of sonic sootblowing units (1) are arranged at intervals and staggered along the depth direction of the boiler, each of the sonic sootblowing units (1) comprises a plurality of branch pipes, the plurality of branch pipes are arranged in parallel and at intervals, each of the branch pipes is provided with a sootblower (12), the plurality of sootblowers (12) are arranged at even intervals and are provided with sootblowing ports at different positions of the furnace wall of the boiler; An air compressor (2), the air compressor (2) being provided with a main pipeline, the main pipeline being connected to each of the branch pipelines; and A compressed air buffer device (3) is arranged in the main pipeline and is used to maintain the pressure of the pipeline.

2. The sonic sootblowing matrix (1000) according to claim 1, characterized in that The soot blower (12) comprises: A resonance part (121), the resonance part (121) being connected to the branch pipeline, and the resonance part (121) forming a resonance cavity; an electromagnetic valve (122), the electromagnetic valve (122) being arranged in the branch pipeline and used to control the start and stop of the resonance part (121); and A filter screen (123), wherein the filter screen (123) is arranged on the branch pipeline.

3. The sonic sootblowing matrix (1000) according to claim 2, characterized in that The resonance portion (121) gradually expands from an end close to the branch pipe toward an end far from the branch pipe.

4. The sonic sootblowing matrix (1000) according to claim 2, characterized in that The filter screen (123) is provided with a sedimentation portion (123a), and the sedimentation portion (123a) is connected to the branch pipeline and is arranged at an angle with the branch pipeline.

5. The sonic sootblowing matrix (1000) according to claim 2, characterized in that The soot blower (12) further comprises a manual air intake valve (124), wherein the manual air intake valve (124) is arranged on the branch pipeline.

6. The sonic sootblowing matrix (1000) according to claim 2, characterized in that At least a portion of the branch pipeline located between the resonance portion (121) and the solenoid valve (122) is a hose (112a).

7. The sonic sootblowing matrix (1000) according to any one of claims 1 to 6, characterized in that The sonic sootblowing matrix (1000) further comprises a flow meter (4), wherein the flow meter (4) is arranged in the main pipeline.

8. The sonic sootblowing matrix (1000) according to any one of claims 1 to 6, characterized in that The sonic sootblowing matrix (1000) comprises four sonic sootblowing units (1).

9. The sonic sootblowing matrix (1000) according to any one of claims 1 to 6, characterized in that The branch pipeline is made of high temperature resistant stainless steel.

10. A boiler, characterized in that: It comprises the sonic sootblowing matrix (1000) according to any one of claims 1 to 9.

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