Array type adjustable multi-stage jet flow soot blower

Abstract

The invention relates to the field of boiler equipment, in particular to an array type adjustable multi-stage jet flow soot blower. The invention provides an array type adjustable multi-stage jet flow soot blower which comprises a soot blower body, a containing cavity is formed in the soot blower body, and a nozzle communicated with the containing cavity is arranged on the side wall of the soot blower body; the connecting piece is arranged in the accommodating cavity; the adjusting piece is arranged in the accommodating cavity and is connected with the connecting piece; one end of the air inlet pipe is connected with the bottom wall of the soot blower body, and the air inlet pipe is communicated with the containing cavity. The nozzle conducts secondary acceleration on the gas, the gas flow speed is increased to supersonic speed, the gas impact force is increased, and the soot blowing effect is improved. The multiple nozzles are arranged at different heights of the soot blower body at intervals, furnace ash at different heights can be blown and swept at the same time, and the soot blowing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of boiler equipment, and in particular to an array-type adjustable multi-stage jet soot blower. Background Art

[0002] During power generation in power plants, dust easily accumulates on the boiler's heat exchange surfaces, impacting normal operation and efficiency. Traditional sootblowers rely on the impact force of steam to remove soot. However, at the end of the steam flow, the impact force is significantly attenuated, resulting in poor sootblowing effectiveness and severe localized soot accumulation. Traditional steam sootblowers are prone to mechanical jamming during operation, impacting sootblowing performance. Summary of the Invention

[0003] In order to solve the technical problem that conventional steam sootblowers have poor sootblowing effects, one object of the present invention is to provide an array-type adjustable multi-stage jet sootblower.

[0004] To achieve the above objectives, an embodiment of the present invention provides an array-type adjustable multi-stage jet sootblower, comprising: A sootblower body is provided with an accommodating cavity inside, and a nozzle communicating with the accommodating cavity is provided on a side wall of the sootblower body; A connecting piece, disposed inside the accommodating cavity; an adjusting member, disposed inside the accommodating cavity and connected to the connecting member; An air inlet pipe has one end connected to the bottom wall of the sootblower body, and the air inlet pipe is communicated with the accommodating cavity.

[0005] In the above technical solution, the accommodating cavity includes: A groove is provided on the bottom wall of the sootblower body; The first annular groove is formed on a side of the sootblower body close to the groove. The first annular groove is connected to the groove. The depth of the first annular groove gradually increases from away from the groove to closer to the groove.

[0006] In the above technical solution, the depth of the first annular groove close to one end of the groove is smaller than the depth of the groove.

[0007] In the above technical solution, a second annular groove is formed on one side of the sootblower body close to the groove, the second annular groove is connected to the first annular groove, and the second annular groove cooperates with the air inlet pipe.

[0008] In the above technical solution, the depth of the second annular groove is smaller than the depth of the first annular groove close to one end of the groove.

[0009] In the above technical solution, the size of the adjusting member gradually decreases from the bottom of the groove toward the outside of the groove.

[0010] In the above technical solution, the nozzle adopts a variable diameter jet.

[0011] In the above technical solution, a plurality of nozzles are provided at intervals at different heights of the sootblower body.

[0012] In the above technical solution, the sootblower body and the connecting piece are detachably connected.

[0013] In the above technical solution, the sootblower body, nozzle, connector, adjustment member and air inlet pipe are all made of high-temperature resistant alloy material.

[0014] In the above technical solution, the sootblower body is provided with at least three layers of nozzles.

[0015] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a top-view cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the sootblower body of the present invention; Figure 4 This is a schematic diagram of the main cross-sectional structure of the sootblower body of the present invention; in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows: 1. Sootblower body; 2. Nozzle; 3. Connector; 4. Adjuster; 5. Air inlet pipe; 6. Groove; 7. First annular groove; 8. Second annular groove. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0019] Refer to the following Figures 1 to 4Some embodiments of an array-type adjustable multi-stage jet sootblower according to the present invention are described.

[0020] like Figures 1 to 3 As shown, an embodiment of the present invention provides an array-type adjustable multi-stage jet sootblower, comprising a sootblower body 1 , a connecting member 3 , an adjusting member 4 and an air inlet pipe 5 .

[0021] Specifically, the sootblower body 1 is provided with a accommodating cavity inside, and a nozzle 2 connected to the accommodating cavity is provided on the side wall of the sootblower body 1; a connecting piece 3 is provided inside the accommodating cavity; an adjusting piece 4 is provided inside the accommodating cavity and connected to the connecting piece 3; an air inlet pipe 5 is connected to the bottom wall of the sootblower body 1 at one end, and the air inlet pipe 5 is connected to the accommodating cavity.

[0022] When it is necessary to blow soot in the boiler, the entire device is placed in the boiler, and then connected to the end of the air inlet pipe 5 away from the soot blower body 1 through an external air source, and then the air inlet pipe 5 is inflated. Then, in the process of the gas entering the accommodating cavity, an adjusting member 4 is provided in the middle of the opening of the accommodating cavity, and an annular channel is formed between the side wall of the adjusting member 4 and the inner wall of the accommodating cavity. In the direction from the side of the soot blower body 1 close to the air inlet pipe 5 to the side of the soot blower body 1 away from the air inlet pipe 5, the distance between the inner diameter and the outer diameter of the annular channel gradually decreases. Then, in the process of the gas passing through the annular channel, the annular channel becomes narrower, thereby reducing the gas pressure. After the gas pressure is reduced, the gas flow rate will increase, which can increase The impact force of the gas, the gas with increased flow rate passes through the annular channel and continues to move into the accommodating cavity, and then the gas will pass through the nozzle 2 installed on the side wall of the sootblower body 1 again. There are multiple nozzles 2 at intervals at the same height of the sootblower body 1. This patent takes eight as an example. If the side wall shape of the sootblower body 1 is cylindrical, then eight nozzles 2 are provided at the same height of the sootblower body 1, and the spacing between two adjacent nozzles 2 is the same, thereby ensuring that the gas ejected from each nozzle 2 blows soot to the boiler at different angles, thereby improving the sootblowing efficiency. At the same time, a single nozzle 2 will generate a force when working, so the nozzle 2 is designed into a circular array to offset the force generated by the jet on the sootblower body 1.

[0023] In addition, eight nozzles 2 may be provided at different heights of the sootblower body 1. For example, eight nozzles 2 may be provided at intervals on the side wall 20 mm away from the bottom wall of the sootblower body 1, eight nozzles 2 may be provided at intervals on the side wall 37 mm away from the bottom wall of the sootblower body 1, and two nozzles may be provided on the side wall 43 mm away from the bottom wall of the sootblower body 1. Multiple rows of nozzles 2 may be used to simultaneously blow air to boilers at different heights, further improving sootblowing efficiency.

[0024] The nozzle 2 adopts an adjustable variable diameter, so when the gas passes through the nozzle 2, the gas flow rate can be increased again, so that the gas increases to supersonic speed, further increasing the impact force of the gas and further improving the soot blowing effect.

[0025] It should be noted that the side wall of the sootblower body 1 can also be a polygonal prism. Taking an octagonal prism as an example, multiple nozzles 2 are provided on each side of the octagonal prism, and each nozzle 2 is at a different height, which can also achieve the sootblowing effect on the boiler. The sootblowing principle is the same as the cylindrical shape of the side wall of the sootblower body 1. The specific working process will not be described in detail here.

[0026] During installation, the varying lengths of the air inlet pipes 5 result in varying pressure losses. The resulting pressure differential can affect the sootblowing range of the sootblower body 1. In this case, the connector 3 can be replaced. The connector 3 is a mounting stud, located within the groove. The top of the stud is threaded into the bottom of the groove 6, and the bottom of the stud is threaded into the adjustment member 4. By using studs of different lengths to adjust the position of the adjustment member 4, the sootblower body 1 can achieve a consistent sootblowing range.

[0027] Only the sootblower body 1, the connecting piece 3, the adjusting piece 4 and the air inlet pipe 5 are needed to increase the gas flow rate to supersonic speed, with a simple structure and low manufacturing cost.

[0028] like Figures 1 to 4 As shown, in one embodiment of the present invention, the accommodating cavity includes: A groove 6 is provided on the bottom wall of the sootblower body 1; The first annular groove 7 is formed on a side of the sootblower body 1 close to the groove 6 . The first annular groove 7 is connected to the groove 6 . The depth of the first annular groove 7 gradually increases from being away from the groove 6 to being close to the groove 6 .

[0029] The depth of the first annular groove 7 near one end of the groove 6 is smaller than the depth of the groove 6 .

[0030] A groove 6 is opened on the bottom wall of the sootblower body 1, and the groove 6 is cylindrical in shape and rectangular in cross section. A first annular groove 7 is opened on the bottom wall of the sootblower body 1 close to the groove 6. The first annular groove 7 is connected to the groove 6. The depth of the first annular groove 7 gradually increases from away from the groove 6 to close to the groove 6. The depth of the first annular groove 7 close to one end of the groove 6 is less than the depth of the groove 6, so that the cross section of the first annular groove 7 is a right triangle. The adjusting member 4 can then be passed through the annular groove, the upper end of the adjusting member 4 is higher than the upper end of the first annular groove 7, the lower end of the adjusting member 4 is lower than the lower end of the first annular groove 7, and the first adjusting member 4 is conical in shape, and the size of the first adjusting member 4 gradually increases from bottom to top. The first adjusting member 4 is at the center of the first annular groove 7, so that the outer diameter of the first adjusting member 4 and the first annular groove 7 forms an annular channel. In the direction from bottom to top, the annular channel gradually narrows, and then when the gas passes through the annular channel, the gas flow rate can be increased, and the gas with increased flow rate will enter the inside of the groove 6. Since a nozzle 2 connected to the groove 6 is provided on the side wall of the sootblower body 1, after the gas enters the inside of the groove 6, the gas flow rate will be increased to supersonic speed through the nozzle 2 again, and then ejected from the nozzle 2. The ejected gas blows soot on the boiler.

[0031] like Figures 1 to 4 As shown, in one embodiment of the present invention, a second annular groove 8 is formed on the side of the sootblower body 1 close to the groove 6 , the second annular groove 8 is connected to the first annular groove 7 , and the second annular groove 8 cooperates with the air inlet pipe 5 .

[0032] The depth of the second annular groove 8 is smaller than the depth of the first annular groove 7 at one end close to the groove 6 .

[0033] A second annular groove 8 is formed on the bottom wall of the sootblower body 1 on the side near the groove 6. The second annular groove 8 is connected to the first annular groove 7. The cross-section of the second annular groove 8 is rectangular. The outer diameter of the second annular groove 8 matches the outer diameter of the air intake pipe 5. Thus, the second annular groove 8 can facilitate the installation of the air intake pipe 5. In addition, the depth of the second annular groove 8 is less than the depth of the first annular groove 7 near the end of the groove 6. Therefore, when the air intake pipe 5 is inserted into the second annular groove 8 and contacts the first annular groove 7, the air intake pipe 5 cannot be pushed upward, thereby achieving a positioning effect for the air intake pipe 5.

[0034] like Figures 1 to 4 As shown, in one embodiment of the present invention, the sootblower body 1, the nozzle 2, the connecting piece 3, the adjusting piece 4 and the air inlet pipe 5 are all made of high temperature resistant materials.

[0035] Since the temperature inside the boiler is too high, the sootblower body 1, nozzle 2, connector 3, adjustment member 4 and air inlet pipe 5 are all made of high-temperature resistant materials to avoid damage to the entire device caused by excessive boiler temperature.

[0036] The present invention has the following advantages: 1. Through secondary acceleration of the gas, the gas flow rate is increased to supersonic speed, the gas impact force is increased, and the soot blowing effect is improved.

[0037] 2. By arranging a plurality of nozzles 2 at different heights on the sootblower body 1, sootblowing can be performed on boilers at different heights at the same time, thereby improving sootblowing efficiency.

[0038] 3. By aligning multiple nozzles 2 at the same height in different directions and with an even number of nozzles 2, the forces generated by the relatively arranged nozzles 2 can be offset against each other, thereby reducing damage to the sootblower body 1 caused by the forces generated by the nozzles 2.

[0039] 4. Only the sootblower body 1, the connecting piece 3, the adjusting piece 4 and the air inlet pipe 5 are required to increase the gas flow rate to supersonic speed, with a simple structure and low manufacturing cost.

[0040] In the present invention, terms such as "installed," "connected," "connected," and "fixed" should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; and "connected" may refer to a direct connection or an indirect connection via an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] In the description of the present invention, it should be understood that the terms "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0042] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An array-type adjustable multi-stage jet sootblower, characterized in that: include: A sootblower body (1) is provided with a receiving cavity therein, and a nozzle (2) communicating with the receiving cavity is provided on a side wall of the sootblower body (1); A connecting member (3) is arranged inside the accommodating cavity; An adjusting member (4) is disposed inside the accommodating cavity and connected to the connecting member (3); An air inlet pipe (5) has one end connected to the bottom wall of the soot blower body (1), and the air inlet pipe (5) is in communication with the accommodating cavity.

2. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: The accommodating cavity comprises: A groove (6) is provided on the bottom wall of the sootblower body (1); A first annular groove (7) is provided on a side of the sootblower body (1) close to the groove (6), the first annular groove (7) is connected to the groove (6), and the depth of the first annular groove (7) gradually increases from away from the groove (6) to closer to the groove (6).

3. The array-type adjustable multi-stage jet sootblower according to claim 2, characterized in that: The depth of the first annular groove (7) close to one end of the groove (6) is smaller than the depth of the groove (6).

4. The array-type adjustable multi-stage jet sootblower according to claim 3, characterized in that: The sootblower body (1) is provided with a second annular groove (8) on one side close to the groove (6), the second annular groove (8) is connected to the first annular groove (7), and the second annular groove (8) cooperates with the air inlet pipe (5).

5. The array-type adjustable multi-stage jet sootblower according to claim 4, characterized in that: The depth of the second annular groove (8) is smaller than the depth of the first annular groove (7) close to one end of the groove (6).

6. The array-type adjustable multi-stage jet sootblower according to claim 2, characterized in that: The size of the adjusting member (4) gradually decreases from the bottom of the groove (6) toward the outside of the groove (6).

7. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: The nozzle (2) adopts a variable diameter jet.

8. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: A plurality of nozzles (2) are spaced apart at different heights of the sootblower body (1).

9. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: The sootblower body (1) and the connecting piece (3) are detachably connected.

10. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: The soot blower body (1), the nozzle (2), the connecting piece (3), the adjusting piece (4) and the air inlet pipe (5) are all made of a high-temperature resistant alloy material.

11. The array-type adjustable multi-stage jet sootblower according to claim 1, characterized in that: The sootblower body (1) is provided with at least three layers of nozzles (2).

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