Retractable flusher for internal hearth of boiler

Abstract

The utility model discloses a telescopic flusher for a hearth in a boiler, which relates to the field of boiler maintenance equipment and comprises a first connecting pipe, a second connecting pipe, a screwed joint, a plug, a conical reducing pipe and a nozzle. The large-diameter end of the conical reducing pipe is communicated with a water pump through a pipeline, at least two second connecting pipes are sequentially connected together in a threaded mode end to end through a threaded connector, and the water outlet end of the first connecting pipe is connected with the water inlet end of the adjacent second connecting pipe in a threaded mode through a threaded connector. The plug is in threaded connection with the water outlet end of the second connecting pipe located at the tail end, multiple sets of first water spraying openings are formed in the side wall of the first connecting pipe, multiple sets of second water spraying openings are formed in the side wall of the second connecting pipe, and nozzles are embedded in the first water spraying openings and the second water spraying openings. The overall length of the flusher can be flexibly adjusted, and the flusher is suitable for flushing operation of boiler hearths of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of boiler maintenance equipment, especially to a telescopic boiler internal hearth flusher. BACKGROUND

[0002] The boiler hearth is the core place of heat exchange, and is internally equipped with a water cooling wall, when fuel burns in the hearth, the released heat energy will heat the water cooling wall, prompting the water in the water cooling wall to absorb heat, and then completing the heat exchange process, and the heat transfer efficiency of the water cooling wall directly affects the overall operation performance of the boiler.

[0003] However, ash is inevitably produced during the fuel combustion process, part of the ash will adhere to the water cooling wall, and as the ash continues to accumulate, the heat transfer coefficient of the water cooling wall heat receiving surface will gradually decrease, resulting in an increase in the boiler heat transfer thermal resistance, which not only reduces the heat absorption of the hearth, but also increases the exhaust smoke heat loss of the boiler, thereby adversely affecting the operation efficiency of the boiler; in addition, the accumulation of ash may also cause local overheating, corrosion and other problems, further affecting the safety and service life of the boiler.

[0004] At present, the common boiler hearth flushing equipment on the market is mostly a flushing gun with fixed length, the length and structure of which cannot be flexibly adjusted, for the case that the sizes of boilers are different, if the flushing gun is customized according to the size, each flushing gun needs to be customized separately, and a user may have several boilers with different sizes, such customized demand not only increases the equipment cost, but also leads to the complexity of management and maintenance.

[0005] Therefore, how to develop a telescopic boiler internal hearth flusher, which can flexibly adjust the overall length of the flusher and adapt to the flushing operation of different size boiler hearths, becomes a technical problem to be solved by the personnel in the field. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a telescopic boiler internal hearth flusher, which can flexibly adjust the overall length of the flusher and adapt to the flushing operation of different size boiler hearths.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] The utility model relates to a telescopic boiler internal hearth flusher, including first connecting pipe, second connecting pipe, screw joint, plug, taper reducer and nozzle, the taper reducer's small caliber end with first connecting pipe's water inlet end fixed connection, the taper reducer's big caliber end is linked together through pipeline with water pump intercommunication, at least two second connecting pipes are connected together in proper order through screw joint, form telescopic pipe body structure, first connecting pipe's water outlet end is connected together with adjacent second connecting pipe's water inlet end through screw joint, the plug is connected together with second connecting pipe's water outlet end of tail end screw joint, first connecting pipe's lateral wall is equipped with multiple first water spray opening, second connecting pipe's lateral wall is equipped with multiple second water spray opening, first water spray opening, second water spray opening's inside all inlay mounting have nozzle.

[0009] Preferably, each group of first water spray openings includes one first side nozzle and two symmetrically arranged first inclined nozzles, and the inside of each first side nozzle and first inclined nozzle is inlaid with the nozzle.

[0010] Preferably, each group of second water spray openings includes one second side nozzle and two symmetrically arranged second inclined nozzles, and the inside of each second side nozzle and second inclined nozzle is inlaid with the nozzle.

[0011] Preferably, it further includes a flange, which is sleeved and installed on one side of the first connecting pipe close to the taper reducer.

[0012] Compared with the prior art, the utility model has the beneficial technical effects that:

[0013] The utility model relates to a telescopic boiler internal hearth flusher, by increasing and reducing the number of second connecting pipes, the operator can flexibly adjust the overall length of the flusher according to the actual size of the boiler hearth, this design not only ensures that the flushing operation can comprehensively cover the heating surface of the boiler hearth, but also greatly expands the application range of the flusher, so that it can adapt to boilers of different sizes and types, improves the versatility and practicality of the equipment; in addition, the telescopic structure design also facilitates the storage and transportation of the equipment, reduces the space occupation, and further improves the use convenience. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further described below in combination with the drawings.

[0015] Figure 1 It is the overall structure schematic view of the utility model relates to a telescopic boiler internal hearth flusher.

[0016] Figure 2 It is the overall structure sectional view of the utility model relates to a telescopic boiler internal hearth flusher.

[0017] Figure 3 It is the first connecting pipe structure schematic view of the utility model;

[0018] Figure 4 It is the second connecting pipe structure schematic view of the utility model;

[0019] Figure 5 It is the utility model Figure 2 A-A partial sectional view in it;

[0020] Figure 6 It is the utility model Figure 2 B-B partial sectional view in it;

[0021] Figure 7 It is the threaded joint structure schematic view of the utility model;

[0022] Figure 8 It is the plug structure schematic view of the utility model.

[0023] The sign of drawing is explained: 1, first connecting pipe;11, first water jet;111, first side jet;112, first oblique jet;2, second connecting pipe;21, second water jet;211, second side jet;212, second oblique jet;3, threaded joint;4, plug;5, flange;6, conical taper pipe;7, nozzle. Specific implementation

[0024] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following is combined with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0025] As Figures 1-8 Shown, a telescopic boiler internal hearth flusher, including first connecting pipe 1, second connecting pipe 2, threaded joint 3, plug 4, conical taper pipe 6 and nozzle 7, the small caliber end of the conical taper pipe 6 is fixedly connected with the water inlet end of the first connecting pipe 1, the large caliber end of the conical taper pipe 6 is communicated with water pump through pipeline, at least two second connecting pipes 2 are sequentially screwed together through the threaded joint 3, form telescopic pipe body structure, the water outlet end of the first connecting pipe 1 is screwed together with the water inlet end of adjacent second connecting pipe 2 through the threaded joint 3, the plug 4 is screwed together with the water outlet end of the second connecting pipe 2 at the tail end, multiple groups of first water jets 11 are set up on the side wall of the first connecting pipe 1, multiple groups of second water jets 21 are set up on the side wall of the second connecting pipe 2, the nozzle 7 is inlaid and installed in the inside of the first water jet 11, second water jet 21.

[0026] Specifically, the staff can freely select the number of the second connecting pipes 2 according to the actual size of the boiler, flexibly adjust the overall length of the flusher, and make the flusher have the telescopic function, which not only ensures that the flushing operation can comprehensively cover the heating surface of the boiler furnace, but also greatly expands the application range of the flusher.

[0027] Specifically, each group of the first water spray ports 11 comprises a first side spray port 111 and two symmetrically arranged first inclined spray ports 112, and the inside of each of the first side spray port 111 and the first inclined spray port 112 is embeddedly installed with the nozzle 7.

[0028] Specifically, each group of the second water spray ports 21 comprises a second side spray port 211 and two symmetrically arranged second inclined spray ports 212, and the inside of each of the second side spray port 211 and the second inclined spray port 212 is embeddedly installed with the nozzle 7.

[0029] Specifically, when the device is used, the staff stands outside the boiler furnace, inserts the telescopic flusher into the furnace interior through the manhole or inspection hole, and realizes the flushing of the heating surface of the furnace by rotating the angle of the flusher.

[0030] Specifically, the flange plate 5 is sleeved and installed on one side of the first connecting pipe 1 close to the conical taper pipe 6.

[0031] Specifically, the flange plate 5 serves as a connecting piece, and can facilitate the connection and fixation of the first connecting pipe 1 with the water conveying pipeline of the water pump.

[0032] The use process of the utility model is as follows:

[0033] Firstly, the required flushing length is determined according to the actual size of the boiler furnace, the corresponding number of the second connecting pipes 2 is selected, a plurality of the second connecting pipes 2 are threadedly connected at the head and tail through the threaded joints 3 to form a telescopic pipe body structure, the water outlet end of the first connecting pipe 1 is threadedly connected with the second connecting pipe 2 at the forefront, the water outlet end of the tail second connecting pipe 2 is threadedly installed with the plug 4, and the assembly of the flusher is completed.

[0034] Secondly, the large-diameter end of the conical taper pipe 6 is fixedly connected with the water conveying pipeline of the water pump through the flange plate 5, so that the pressurization effect is formed when the water flows into the first connecting pipe 1 through the conical taper pipe 6 due to the contraction of the pipe diameter.

[0035] Then, the staff stands outside the boiler furnace, and inserts the assembled telescopic flusher into the furnace through the manhole or inspection port, and after reaching the predetermined flushing position, starts the water pump, and the high-pressure water flow sequentially passes through the tapered reducing pipe 6, the first connecting pipe 1 and the plurality of second connecting pipes 2, and forms a multi-directional water jet through the nozzles 7 embedded in the first water outlet 11 and the second water outlet 21;Among them, the first side outlet 111 and the second side outlet 211 provide vertical flushing, while the symmetrical first inclined outlet 112 and the second inclined outlet 212 form an inclined water flow, realizing full coverage flushing of the furnace heating surface.

[0036] Finally, the staff adjusts the spray coverage area by rotating the angle of the flusher, ensuring that the inner wall and heating surface of the furnace are cleaned without dead angles;After flushing, turn off the water pump, pull out the flusher from the furnace, disassemble the connecting pipes and store them in a dry environment for subsequent use.

[0037] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0038] The above-described embodiments are only descriptions of the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A retractable boiler internal furnace flusher characterized by: It includes first connecting pipe (1), second connecting pipe (2), threaded joint (3), plug (4), tapered reducer (6) and nozzle (7), the small caliber end of the tapered reducer (6) is fixedly connected with the water inlet end of the first connecting pipe (1), the large caliber end of the tapered reducer (6) is communicated with the water pump through the pipeline, at least two second connecting pipes (2) are threadedly connected together in sequence through the threaded joint (3), forming a telescopic pipe body structure, the water outlet end of the first connecting pipe (1) is threadedly connected together with the water inlet end of the adjacent second connecting pipe (2) through the threaded joint (3), the plug (4) is threadedly connected together with the water outlet end of the second connecting pipe (2) located at the tail end, a plurality of first water injection ports (11) are formed on the side wall of the first connecting pipe (1), a plurality of second water injection ports (21) are formed on the side wall of the second connecting pipe (2), the first water injection port (11), second water injection port (21) are embedded with the nozzle (7) inside.

2. A retractable boiler internal furnace flusher according to claim 1, characterised in that: Each group of the first water injection port (11) includes a first side nozzle (111) and two symmetrically arranged first inclined nozzles (112), and the inside of each first side nozzle (111) and first inclined nozzle (112) is embedded with the nozzle (7).

3. A retractable boiler internal furnace flusher according to claim 2, characterised in that: Each group of the second water injection port (21) includes a second side nozzle (211) and two symmetrically arranged second inclined nozzles (212), and the inside of each second side nozzle (211) and second inclined nozzle (212) is embedded with the nozzle (7).

4. A retractable boiler internal furnace flusher according to claim 1, wherein: It also includes a flange (5), which is sleeved and installed on one side of the first connecting pipe (1) close to the tapered reducer (6).

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