Mixing nozzle and ash removal method

Abstract

The invention relates to the technical field of nozzles, and discloses a mixing nozzle which comprises a cylindrical cavity, a first annular cavity and a second annular cavity. In the spraying process, the liquid is atomized through two strands of gas, and the liquid is surrounded by the two strands of gas in sequence. And after the high-pressure water is primarily atomized by the high-pressure steam, the compressed air is used for secondarily atomizing the primarily atomized water drops. The atomization effect is improved, and finer and more uniform fog drops can be generated. Moreover, the speed of the high-pressure steam can be driven by the speed of the high-pressure water, so that the kinetic energy of the steam is improved, and the cleaning effect is achieved. Meanwhile, the high-temperature steam can heat the high-pressure water, so that the high-pressure water generates a cavitation effect, and the cleaning effect is improved. Meanwhile, when the high-pressure water flows, the addition of the compressed air can promote the generation of a cavitation phenomenon, cavitation bubbles collapse when impacting an object to be treated along with the water jet flow, strong impact force is generated, and the cleaning effect and the like are enhanced. The invention further discloses an ash removal method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nozzles, for example to a mixed nozzle and a method for removing ash. BACKGROUND

[0002] When a boiler burns fuel (such as coal, natural gas, etc.), flue gas is generated, which contains fly ash, unburned carbon particles, sulfides and other impurities. These impurities, when flowing through the heating surface of the boiler (such as an economizer, a superheater, a reheater, an air preheater, etc.), will gradually deposit on the surface of the heating surface due to changes in temperature, flow rate, etc., forming ash deposits or slag. Ash deposits and slag are one of the important reasons for unplanned shutdown of the boiler (such as pipe explosion, induced draft fan failure, etc.). The effective operation of the ash blowing device can reduce the probability of such failures, so the power plant needs to install an ash blowing device to regularly remove the ash deposits and slag from the heating surface, thereby maintaining the stable and efficient operation of the boiler. The blowing pipe is one of the core components of the ash blowing device, and the end of the blowing pipe is provided with a nozzle. The design of the nozzle is crucial, as it directly affects the ash removal effect. The existing nozzle often uses steam and water to mix outside the nozzle, so that the water is fully atomized into fine droplets, forming a uniform solid cone-shaped spray, which fully contacts and reacts with the gas or the surrounding environment to complete the ash removal work. However, the nozzle only has one liquid channel and one gas channel, and the mixing, mixing and spraying of the gas and liquid in the mixing chamber inside the nozzle are poor, which further leads to poor ash removal effect.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, the following brief summary is given. The summary is not an extensive overview of the application, nor is it intended to identify key / critical elements of the application or to delineate the scope of the embodiments. Rather, the sole purpose of the summary is to serve as a prelude to the detailed description that follows.

[0005] The present application provides a mixed nozzle and a method for removing ash to improve the ash removal effect.

[0006] In some embodiments, the mixed nozzle comprises: a cylindrical chamber for containing high-pressure water; a first annular chamber sleeved on the cylindrical chamber and coaxially distributed with the cylindrical chamber for containing high-pressure steam; and a second annular chamber sleeved on the first annular chamber and coaxially distributed with the first annular chamber for containing compressed air; wherein one end of the cylindrical chamber, the first annular chamber and the second annular chamber is not communicated with each other, and the other end of the cylindrical chamber, the first annular chamber and the second annular chamber is communicated with each other.

[0007] Optionally, further comprising: a first nozzle, an inner space of which is the cylindrical chamber; a second nozzle, sleeved on the first nozzle and coaxially distributed with the first nozzle; a first ring plate, connected between an outer wall of the first nozzle and an inner wall of the second nozzle and located at one end of the first nozzle and the second nozzle, a surrounding area of the first nozzle, the second nozzle and the first ring plate being the first annular chamber, the first ring plate comprising a first through hole opened thereon; a third nozzle, sleeved on the second nozzle and coaxially distributed with the first nozzle; a second ring plate, connected between an outer wall of the second nozzle and an inner wall of the third nozzle and located at one end of the second nozzle and the third nozzle, a surrounding area of the second nozzle, the third nozzle and the second ring plate being the second annular chamber, the second ring plate comprising a second through hole opened thereon; wherein the high-pressure water in the cylindrical chamber enters from one end of the first nozzle and is discharged from the other end of the first nozzle, the high-pressure steam in the first annular chamber enters from the first through hole and is discharged from the other end of the second nozzle, and the compressed air in the second annular chamber enters from the second through hole and is discharged from the other end of the third nozzle.

[0008] Optionally, further comprising: a first pipe, comprising a first coaxial section connected with the first nozzle and a first vertical section connected with the first coaxial section, the first coaxial section being coaxially distributed with the first nozzle, and an axis of the first vertical section being perpendicular to an axis of the first nozzle; a second pipe, comprising a second coaxial section connected with the second nozzle and a second vertical section connected with the second coaxial section, the second coaxial section being coaxially distributed with the second nozzle, and an axis of the second vertical section being perpendicular to an axis of the second nozzle; a third pipe, comprising a third coaxial section connected with the third nozzle and a third vertical section connected with the third coaxial section, the third coaxial section being coaxially distributed with the third nozzle, and an axis of the third vertical section being perpendicular to an axis of the third nozzle; wherein the first coaxial section penetrates a pipe wall of the second pipe, and the second coaxial section penetrates a pipe wall of the third pipe.

[0009] Optionally, further comprising: a fourth pipe comprising a fourth coaxial section connected to the first nozzle and a fourth vertical section connected to the fourth coaxial section, the fourth coaxial section being coaxial with the first nozzle, and the fourth vertical section being perpendicular to the first nozzle; a fifth pipe comprising a fifth coaxial section connected to the second nozzle and a fifth vertical section connected to the fifth coaxial section, the fifth coaxial section being coaxial with the second nozzle, and the fifth vertical section being perpendicular to the second nozzle; a sixth pipe connected to the third nozzle and coaxial with the third nozzle; wherein the fifth vertical section passes through the pipe arm of the sixth pipe, and the fourth vertical section passes through the pipe arms of the fifth pipe and the sixth pipe.

[0010] Optionally, further comprising: a first nozzle mounted to the high-pressure water discharge end of the first nozzle; a gem seat mounted to the interior of the first nozzle; a ruby mounted to the interior of the gem seat; and a flow guide sleeve mounted to the interior of the first nozzle and abutting the ruby.

[0011] Optionally, further comprising: a second nozzle mounted to the high-pressure steam discharge end of the second nozzle.

[0012] Optionally, the pipe wall of the second nozzle gradually shrinks in the axial direction, the large end of the second nozzle is used for entering high-pressure steam, and the small end of the second nozzle is used for discharging high-pressure steam; and the pipe wall of the third nozzle gradually shrinks in the axial direction, the large end of the third nozzle is used for entering compressed air, and the small end of the third nozzle is used for discharging compressed air.

[0013] Optionally, the second nozzle comprises a first cylinder and a third ring plate connected to one end of the first cylinder, the central hole of the third ring plate is used for discharging high-pressure steam, and the other end of the first cylinder is used for entering high-pressure steam; and the third nozzle comprises a second cylinder and a fourth ring plate connected to one end of the second cylinder, the central hole of the fourth ring plate is used for discharging compressed air, and the other end of the second cylinder is used for entering compressed air.

[0014] Optionally, the distance from the high-pressure water discharge to the first ring plate is in the range of 15mm to 45mm; the distance from the high-pressure steam discharge to the first ring plate is in the range of 30mm to 65mm; the distance from the compressed air discharge to the first ring plate is in the range of 50mm to 75mm; the diameter of the high-pressure water discharge is in the range of 1mm to 2mm; the diameter of the high-pressure steam discharge is in the range of 3.5mm to 11mm; the diameter of the compressed air discharge is in the range of 6mm to 12mm; wherein the distance from the compressed air discharge to the first ring plate is greater than the distance from the high-pressure steam discharge to the first ring plate, which is greater than the distance from the high-pressure water discharge to the first ring plate, and the diameter of the compressed air discharge is greater than the diameter of the high-pressure steam discharge, which is greater than the diameter of the high-pressure water discharge.

[0015] In some embodiments, the method for descaling includes: directing the mixed nozzle towards a descaling area; introducing high-pressure water into the cylindrical chamber, and controlling the pressure of the introduced high-pressure water to be in the range of 50Mpa to 100Mpa; introducing high-pressure steam into the first annular chamber, and controlling the pressure of the introduced high-pressure steam to be in the range of 0.8Mpa to 1.5Mpa; and introducing compressed air into the second annular chamber, and controlling the pressure of the introduced compressed air to be in the range of 1.4Mpa to 1.7Mpa.

[0016] The mixed nozzle and the method for descaling provided by the embodiments of the present disclosure can achieve the following technical effects: When in use, since one end of the cylindrical chamber, the first annular chamber and the second annular chamber are not communicated with each other, the high-pressure water, the high-pressure steam and the compressed air can enter the cylindrical chamber, the first annular chamber and the second annular chamber through independent pipelines respectively. After entering the cylindrical chamber, the first annular chamber and the second annular chamber, since the other end of the cylindrical chamber, the first annular chamber and the second annular chamber are communicated with each other, the high-pressure water, the high-pressure steam and the compressed air can be mixed and finally sprayed out. The liquid is atomized by two gas streams, and the liquid is surrounded by the two gas streams in turn. The high-pressure water is first atomized by the high-pressure steam, and then the compressed air atomizes the water droplets. The atomization effect is improved, and finer and more uniform mist droplets can be generated. Moreover, the speed of the high-pressure water can drive the speed of the high-pressure steam, and the kinetic energy of the steam is improved to achieve the cleaning effect. At the same time, the high-temperature steam can heat the high-pressure water to produce a cavitation effect, thereby improving the cleaning effect. At the same time, when the high-pressure water flows, the addition of the compressed air can promote the generation of cavitation, and the cavitation bubbles collapse when impacting the object to be processed, thereby generating a strong impact force and enhancing the cleaning effect.

[0017] The foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be limiting of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the application as defined by the claims and their equivalents. Identical reference numbers in the figures designate equivalent elements, and: Figure 1 is a cross-sectional structure schematic view of a mixing nozzle provided by an embodiment of the present disclosure; Figure 2 is an enlarged structure schematic view at A in Figure 1 Figure 3 is a bottom view structure schematic view at the first ring plate and the second ring plate in Figure 1 Figure 4 is still another cross-sectional structure schematic view of a mixing nozzle provided by an embodiment of the present disclosure; Figure 5 is an enlarged structure schematic view at A in Figure 4 Figure 6 is another cross-sectional structure schematic view of a mixing nozzle provided by an embodiment of the present disclosure; Figure 7 is an enlarged structure schematic view at A in Figure 6 Figure 8 is another cross-sectional structure schematic view of a mixing nozzle provided by an embodiment of the present disclosure; Figure 9 is an enlarged structure schematic view at A in Figure 8 Figure 10 is another cross-sectional structure schematic view of a mixing nozzle provided by an embodiment of the present disclosure; Figure 11 is an enlarged structure schematic view at A in Figure 10 Figure 12 is a schematic view of a dust removal method provided by an embodiment of the present disclosure; Figure 13 is a schematic view of a control device provided by an embodiment of the present disclosure.

[0019] REFERENCE NUMERALS: ​​​​​​1, cylindrical chamber; 2, first annular chamber; 3, second annular chamber; 4, first nozzle; 5, second nozzle; 6, first ring plate; 7, third nozzle; 8, second ring plate; 9, first pipe; 10, second pipe; 11, third pipe; 12, fourth pipe; 13, fifth pipe; 14, sixth pipe; 15, first jet; 16, gem seat; 17, ruby; 18, flow guide sleeve; 19, second jet. DETAILED DESCRIPTION

[0020] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0021] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0022] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0023] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0024] The term "plurality" means two or more, unless otherwise specified.

[0025] In the embodiments of the present disclosure, the character " / " represents that the preceding and following objects are in an "or" relationship. For example, A / B means A or B.

[0026] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0027] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0028] Embodiment 1 In combination Figures 1 to 11 As shown in the figure, the present disclosure provides a mixing nozzle, which includes a cylindrical chamber 1, a first annular chamber 2 and a second annular chamber 3. The cylindrical chamber 1 serves as a liquid passage and is used to contain high-pressure water. The first annular chamber 2 is sleeved on the cylindrical chamber 1 and is coaxially distributed with the cylindrical chamber 1, serving as a gas passage and being used to contain high-pressure steam. The second annular chamber 3 is sleeved on the first annular chamber 2 and is coaxially distributed with the first annular chamber 2, serving as a gas passage and being used to contain compressed air. Wherein, one end of the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3 are not communicated with each other, and the other end of the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3 are communicated with each other.

[0029] The mixing nozzle provided by the present disclosure is characterized in that one end of the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3 are not communicated with each other, so that the high-pressure water, the high-pressure steam and the compressed air can enter the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3 respectively through independent pipelines. After entering the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3, the high-pressure water, the high-pressure steam and the compressed air are mixed and finally sprayed out due to the communication of the other end of the cylindrical chamber 1, the first annular chamber 2 and the second annular chamber 3. Two gas streams are used to atomize the liquid, and the liquid is surrounded by the two gas streams in turn. The high-pressure water is first atomized by the high-pressure steam, and then the compressed air is used to atomize the water droplets. The atomization effect is improved, and finer and more uniform mist droplets can be produced. Moreover, the speed of the high-pressure water can drive the speed of the high-pressure steam, so as to improve the kinetic energy of the steam and achieve the cleaning effect. At the same time, the high-temperature steam can heat the high-pressure water, so as to produce a cavitation effect and improve the cleaning effect. At the same time, when the high-pressure water flows, the addition of the compressed air can promote the generation of cavitation, and the cavitation bubbles collapse when impacting the object to be processed, so as to produce a strong impact force and enhance the cleaning effect.

[0030] Embodiment 2 Optionally, in combinationFigure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 The first nozzle 4, the second nozzle 5, the first ring plate 6, the third nozzle 7 and the second ring plate 8 are further included. The inner space of the first nozzle 4 is a cylindrical chamber 1, and the first nozzle 4 is used for isolating high-pressure water. The second nozzle 5 is sleeved on the first nozzle 4 and coaxially distributed with the first nozzle 4, and the second nozzle 5 is used for isolating high-pressure steam. The first ring plate 6 is connected between the outer wall of the first nozzle 4 and the inner wall of the second nozzle 5 and located at one end of the first nozzle 4 and the second nozzle 5, and is used for determining the relative position of the first nozzle 4 and the second nozzle 5. The enclosed area of the first nozzle 4, the second nozzle 5 and the first ring plate 6 is a first annular chamber 2, and the first ring plate 6 includes a first through hole opened thereon, and the first through hole is used for passing high-pressure steam. The third nozzle 7 is sleeved on the second nozzle 5 and coaxially distributed with the first nozzle 4, and the third nozzle 7 is used for isolating compressed air. The second ring plate 8 is connected between the outer wall of the second nozzle 5 and the inner wall of the third nozzle 7 and located at one end of the second nozzle 5 and the third nozzle 7, and is used for determining the relative position of the second nozzle 5 and the third nozzle 7. The enclosed area of the second nozzle 5, the third nozzle 7 and the second ring plate 8 is a second annular chamber 3, and the second ring plate 8 includes a second through hole opened thereon, and the second through hole is used for passing compressed air. The high-pressure water in the cylindrical chamber 1 enters from one end of the first nozzle 4 and is discharged from the other end of the first nozzle 4, the high-pressure steam in the first annular chamber 2 enters from the first through hole and is discharged from the other end of the second nozzle 5, and the compressed air in the second annular chamber 3 enters from the second through hole and is discharged from the other end of the third nozzle 7.

[0031] In the embodiment of the present disclosure, the high-pressure water in the cylindrical chamber 1 is sprayed out after entering from one end of the first nozzle 4 and being discharged from the other end of the first nozzle 4. The high-pressure steam in the first annular chamber 2 is sprayed out after entering from the first through hole and being discharged from the other end of the second nozzle 5, thereby being in contact with and mixing with the high-speed flowing high-pressure water to perform primary atomization. The compressed air in the second annular chamber 3 is sprayed out after entering from the second through hole and being discharged from the other end of the third nozzle 7, thereby performing secondary atomization on the primary atomized water droplets. Sufficient energy and power are provided for the breaking of the water, so that the water can be fully atomized. The atomized water mist is sprayed out in the form of a solid cone-shaped spray pattern under the pushing of the water jet, covering a larger space range. The good atomization effect helps the liquid to be in more sufficient contact and reaction with the gas or the surrounding environment. For example, in the converter gas dry dedusting, the high-temperature flue gas can be efficiently cooled and conditioned to improve the dedusting effect. Moreover, the three kinds of media are mixed outside the nozzle, avoiding the plugging problem caused by the mixing of the media inside the nozzle. Compared with some internal mixing nozzles, the requirement for the cleanliness of the media is relatively low. Even if the medium contains certain impurities or particulate matters, the normal work of the nozzle is not easily affected.

[0032] Embodiment 3 (not the same as the following embodiment 4) Optionally, in combination with Figure 1 As shown in the figure, the first pipe 9, the second pipe 10 and the third pipe 11 are further included. The first pipe 9 is used for conveying high-pressure water and includes a first coaxial section connected with the first nozzle 4 and a first vertical section connected with the first coaxial section. The first coaxial section is coaxially distributed with the first nozzle 4, and the axis of the first vertical section is perpendicular to the axis of the first nozzle 4. The second pipe 10 is used for conveying high-pressure steam and includes a second coaxial section connected with the second nozzle 5 and a second vertical section connected with the second coaxial section. The second coaxial section is coaxially distributed with the second nozzle 5, and the axis of the second vertical section is perpendicular to the axis of the second nozzle 5. The third pipe 11 is used for conveying compressed air and includes a third coaxial section connected with the third nozzle 7 and a third vertical section connected with the third coaxial section. The third coaxial section is coaxially distributed with the third nozzle 7, and the axis of the third vertical section is perpendicular to the axis of the third nozzle 7. The first coaxial section penetrates the pipe wall of the second pipe 10, and the second coaxial section penetrates the pipe arm of the third pipe 11.

[0033] In the embodiment of the present disclosure, since the first coaxial section penetrates the pipe wall of the second pipe 10 and the second coaxial section penetrates the pipe arm of the third pipe 11, when the first pipe 9, the second pipe 10 and the third pipe 11 convey high-pressure water, high-pressure steam and compressed air respectively, the three kinds of media will not be mixed in advance or interfered, so that the high-pressure water, steam and compressed air can flow in the corresponding chambers respectively. In the case of as convenient as possible for welding processing, the pipeline laying scheme is designed.

[0034] Example 4 (different from Example 3 above) Optionally, in combination with Figure 4 As shown in FIG. 4, the fourth pipe 12, the fifth pipe 13 and the sixth pipe 14 are further included. The fourth pipe 12 is used for conveying high-pressure water, and includes a fourth coaxial section connected with the first nozzle 4 and a fourth vertical section connected with the fourth coaxial section, the fourth coaxial section is coaxially distributed with the first nozzle 4, and the axis of the fourth vertical section is perpendicular to the axis of the first nozzle 4. The fifth pipe 13 is used for conveying high-pressure steam, and includes a fifth coaxial section connected with the second nozzle 5 and a fifth vertical section connected with the fifth coaxial section, the fifth coaxial section is coaxially distributed with the second nozzle 5, and the axis of the fifth vertical section is perpendicular to the axis of the second nozzle 5. The sixth pipe 14 is connected with the third nozzle 7 and coaxially distributed with the third nozzle 7, and is used for conveying high-pressure steam. The fifth vertical section passes through the pipe arm of the sixth pipe 14, and the fourth vertical section passes through the pipe arms of the fifth pipe 13 and the sixth pipe 14.

[0035] In the embodiment of the present disclosure, since the fifth vertical section passes through the pipe arm of the sixth pipe 14 and the fourth vertical section passes through the pipe arms of the fifth pipe 13 and the sixth pipe 14, when the fourth pipe 12, the fifth pipe 13 and the sixth pipe 14 respectively convey high-pressure water, high-pressure steam and compressed air, the three kinds of media will not be mixed or interfered in advance, so that the high-pressure water, steam and compressed air respectively flow in the corresponding chambers. In the case of as convenient as possible for welding processing, another pipe laying scheme is designed.

[0036] Example 5 Optionally, in combination with Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 8 and Figure 10 As shown in FIG. 5, the first nozzle 15, the gem seat 16, the ruby 17 and the flow guide sleeve 18 are further included. The first nozzle 15 is installed at the high-pressure water discharge end of the first nozzle 4, and is used for spraying high-pressure water. The gem seat 16 is installed inside the first nozzle 15, and is used for supporting the ruby 17. The ruby 17 is installed inside the gem seat 16, and is used for contacting with the high-pressure water. The flow guide sleeve 18 is installed inside the first nozzle 15, and abuts against the ruby 17, and is used for supporting and guiding flow.

[0037] In the embodiment of the present disclosure, the high hardness and high wear resistance of the ruby 17 are used to withstand the impact load, abrasive wear and cavitation wear when the high-pressure water is sprayed. The impact and wear of the high-pressure water directly on the first nozzle 15 are avoided, and the service life of the first nozzle 15 is prolonged.

[0038] Example 6 Optionally, in combination with Figure 8 and Figure 10As shown, the second nozzle 19 is installed at the high-pressure steam discharging end of the second nozzle pipe 5 for discharging high-pressure steam.

[0039] In the embodiments of the present disclosure, the second nozzle 19 is installed at the high-pressure steam discharging end of the second nozzle pipe 5, which can improve the atomization effect when the high-pressure steam is discharged.

[0040] Embodiment 7 Optionally, in combination with Figure 1 , Figure 4 , Figure 6 and Figure 8 As shown, the pipe wall of the second nozzle pipe 5 gradually contracts along the axial direction, the large end of the second nozzle pipe 5 is used for entering high-pressure steam, and the small end of the second nozzle pipe 5 is used for discharging high-pressure steam. The pipe wall of the third nozzle pipe 7 gradually contracts along the axial direction, the large end of the third nozzle pipe 7 is used for entering compressed air, and the small end of the third nozzle pipe 7 is used for discharging compressed air.

[0041] In the embodiments of the present disclosure, the second nozzle pipe 5 and the third nozzle pipe 7 adopt the design that the pipe wall gradually contracts along the axial direction, so that the second nozzle pipe 5 and the third nozzle pipe 7 as a whole are arc-shaped, thereby facilitating the flow of fluid.

[0042] Embodiment 8 Optionally, in combination with Figure 10 As shown, the second nozzle pipe 5 includes a first cylinder and a third ring plate connected to one end of the first cylinder, the central hole of the third ring plate is used for discharging high-pressure steam, and the other end of the first cylinder is used for entering high-pressure steam. The third nozzle pipe 7 includes a second cylinder and a fourth ring plate connected to one end of the second cylinder, the central hole of the fourth ring plate is used for discharging compressed air, and the other end of the second cylinder is used for entering compressed air.

[0043] In the embodiments of the present disclosure, the second nozzle pipe 5 and the third nozzle pipe 7 as a whole adopt the design of a cylindrical type, which is convenient for processing and manufacturing and saves costs.

[0044] Embodiment 9 Optionally, in combination with Figure 1 , Figure 4 , Figure 6 , Figure 8 and Figure 10As shown, the distance L1 from the high-pressure water discharge to the first ring plate 6 is in the range of 15mm to 45mm. The distance L2 from the high-pressure steam discharge to the first ring plate 6 is in the range of 30mm to 65mm. The distance L3 from the compressed air discharge to the first ring plate 6 is in the range of 50mm to 75mm. The diameter 1 of the high-pressure water discharge is in the range of 1mm to 2mm. The diameter 2 of the high-pressure steam discharge is in the range of 3.5mm to 11mm. The diameter 3 of the compressed air discharge is in the range of 6mm to 12mm. Among them, the distance L3 from the compressed air discharge to the first ring plate 6 is greater than the distance L2 from the high-pressure steam discharge to the first ring plate 6, which is greater than the distance L1 from the high-pressure water discharge to the first ring plate 6. The diameter 3 of the compressed air discharge is greater than the diameter 2 of the high-pressure steam discharge, which is greater than the diameter 1 of the high-pressure water discharge.

[0045] In the embodiments of the present disclosure, the distances from the high-pressure water discharge, the high-pressure steam discharge, and the compressed air discharge to the first ring plate 6, and the diameters of the high-pressure water discharge, the high-pressure steam discharge, and the compressed air discharge are reasonably designed, which effectively improves the atomization effect. In actual settings, specific settings can be made according to the performance parameters to be achieved by the nozzle, which will not be described here. Moreover, the design that the distance from the compressed air discharge to the first ring plate 6 is greater than the distance from the high-pressure steam discharge to the first ring plate 6, which is greater than the distance from the high-pressure water discharge to the first ring plate 6, can make the first nozzle 4 surrounded by the second nozzle 5, and make the second nozzle 5 surrounded by the third nozzle 7. Meanwhile, the design that the diameter of the compressed air discharge is greater than the diameter of the high-pressure steam discharge, which is greater than the diameter of the high-pressure water discharge, can make the high-pressure water discharged surrounded by the high-pressure steam discharged, and make the high-pressure steam discharged surrounded by the compressed air.

[0046] Specifically, the distance L1 from the high-pressure water discharge to the first ring plate 6 can be 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, or 45mm. In actual settings, specific settings can be made according to the performance parameters to be achieved by the nozzle, which will not be described here.

[0047] Specifically, the distance L2 from the high-pressure steam discharge to the first ring plate 6 can be 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, or 65mm. In actual settings, specific settings can be made according to the performance parameters to be achieved by the nozzle, which will not be described here.

[0048] Specifically, the distance L3 from the compressed air discharge to the first ring plate 6 can be 50mm, 55mm, 60mm, 65mm, 70mm or 75mm. In actual settings, the performance parameters to be achieved by the nozzle can be specifically set, and details are not repeated here.

[0049] Specifically, the diameter 1 of the high-pressure water discharge can be 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm. In actual settings, the performance parameters to be achieved by the nozzle can be specifically set, and details are not repeated here.

[0050] Specifically, the diameter 2 of the high-pressure steam discharge can be 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5mm, 10.0mm, 10.5mm, or 11mm. In actual settings, the performance parameters to be achieved by the nozzle can be specifically set, and details are not repeated here.

[0051] Specifically, the diameter 3 of the compressed air discharge can be 6mm, 7mm, 8mm, 9mm, 10mm, 11mm or 12mm. In actual settings, the performance parameters to be achieved by the nozzle can be specifically set, and details are not repeated here.

[0052] Embodiment 10 In combination Figures 1 to 11 As shown in some embodiments, as Figure 12 As shown, a method for removing ash is provided, the method for removing ash comprising: S1202, directing the mixed nozzle towards the ash removal area.

[0053] S1204, introducing high-pressure water into the cylindrical chamber, and controlling the pressure of the introduced high-pressure water to be in the range of 50Mpa to 100Mpa.

[0054] S1206, introducing high-pressure steam into the first annular chamber, and controlling the pressure of the introduced high-pressure steam to be in the range of 0.8Mpa to 1.5Mpa.

[0055] S1208, introducing compressed air into the second annular chamber, and controlling the pressure of the introduced compressed air to be in the range of 1.4Mpa to 1.7Mpa.

[0056] The method for removing ash provided by the embodiment of the present disclosure is to introduce high-pressure water into the cylindrical chamber 1, and then high-pressure water can be sprayed. After the high-pressure water is introduced into the cylindrical chamber 1, high-pressure steam flowing at high speed can be sprayed, so that the high-pressure steam flowing at high speed is contacted and mixed with the high-pressure water, and primary atomization is performed. After the compressed air is introduced into the second annular chamber 3, compressed air flowing at high speed can be sprayed, so that the water droplets subjected to the primary atomization are subjected to secondary atomization. Sufficient energy and power are provided for the breaking of the water, so that the water can be fully atomized. The water mist after the atomization is sprayed in the form of a solid cone-shaped spray under the pushing of the water jet. Since the mixing nozzle is directed towards the ash removal area, the accumulated ash and slag can be cleaned, and the ash removal work is completed. Moreover, the high-pressure water with a pressure of 50 Mpa to 100 Mpa can improve the kinetic energy of the steam, so that the cleaning effect is achieved. Meanwhile, the high-temperature steam can heat the high-pressure water, so that the high-pressure water has a cavitation effect, and the cleaning effect is improved. Meanwhile, the steam pressure is designed to be 0.8 Mpa to 1.5 Mpa, the steam pressure is kept in this range, and the water can be better entrained and atomized. Meanwhile, the air pressure of the high-pressure water is 1.4 Mpa to 1.7 Mpa, and the cavitation phenomenon can be promoted.

[0057] Specifically, the pressure of the high-pressure water can be 50 Mpa, 60 Mpa, 70 Mpa, 80 Mpa, 90 Mpa or 100 Mpa. In actual design, the specific working pressure range needs to be determined according to the actual production process, equipment parameters and the spray effect to be achieved, and may be adjusted according to the actual situation during equipment debugging and operation.

[0058] Specifically, the pressure of the high-pressure steam can be 0.8 Mpa, 0.9 Mpa, 1.0 Mpa, 1.1 Mpa, 1.2 Mpa, 1.3 Mpa, 1.4 Mpa or 1.5 Mpa. In actual design, the specific working pressure range needs to be determined according to the actual production process, equipment parameters and the spray effect to be achieved, and may be adjusted according to the actual situation during equipment debugging and operation.

[0059] Specifically, the pressure of the compressed air can be 1.40 Mpa, 1.45 Mpa, 1.50 Mpa, 1.55 Mpa, 1.60 Mpa, 1.65 Mpa or 1.70 Mpa. In actual design, the specific working pressure range needs to be determined according to the actual production process, equipment parameters and the spray effect to be achieved, and may be adjusted according to the actual situation during equipment debugging and operation.

[0060] Embodiment 11 The embodiment of the present disclosure provides a controller, the structure of which is shown in Figure 13 and includes: The processor 1302 and the memory 1304 can also include a communication interface 1306 and a bus 1308. The processor 1302, the communication interface 1306, and the memory 1304 can communicate with each other through the bus 1308. The communication interface 1306 can be used for information transmission. The processor 1302 can invoke the logic instructions in the memory 1304 to execute the ash removal method of the above-described embodiments.

[0061] The memory 1304 can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 1302 executes the function application and data processing by running the program instructions / modules stored in the memory 1304, that is, implements the ash removal method in the above-described method embodiments.

[0062] Embodiment 12 The embodiments of the present disclosure provide a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the ash removal method.

[0063] Embodiment 13 The embodiments of the present disclosure provide a computer program product, which includes a computer program stored on a computer readable storage medium, and the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the ash removal method.

[0064] The computer readable storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0065] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A mixing nozzle characterized by, The utility model relates to a high-pressure water and steam and air jetting device, comprising: a cylindrical chamber for containing high-pressure water; a first annular chamber, which is sleeved on the cylindrical chamber and coaxially distributed with the cylindrical chamber, for containing high-pressure steam; a second annular chamber, which is sleeved on the first annular chamber and coaxially distributed with the first annular chamber, for containing compressed air, one end of the cylindrical chamber, the first annular chamber and the second annular chamber being not communicated with each other, and the other end of the cylindrical chamber, the first annular chamber and the second annular chamber being communicated with each other; a first nozzle, the internal space of which is the cylindrical chamber, high-pressure water in the cylindrical chamber entering from one end of the first nozzle and being discharged from the other end of the first nozzle; a second nozzle, which is sleeved on the first nozzle and coaxially distributed with the first nozzle; a first ring plate, which is connected between the outer wall of the first nozzle and the inner wall of the second nozzle and located at one end of the first nozzle and the second nozzle, the enclosed area of the first nozzle, the second nozzle and the first ring plate being the first annular chamber, the first ring plate comprising a first through hole, high-pressure steam in the first annular chamber entering from the first through hole and being discharged from the other end of the second nozzle; a third nozzle, which is sleeved on the second nozzle and coaxially distributed with the first nozzle; a second ring plate, which is connected between the outer wall of the second nozzle and the inner wall of the third nozzle and located at one end of the second nozzle and the third nozzle, the enclosed area of the second nozzle, the third nozzle and the second ring plate being the second annular chamber, the second ring plate comprising a second through hole, compressed air in the second annular chamber entering from the second through hole and being discharged from the other end of the third nozzle; wherein the distance from the high-pressure water discharge to the first ring plate is in the range of 15mm to 45mm, the distance from the high-pressure steam discharge to the first ring plate is in the range of 30mm to 65mm, the distance from the compressed air discharge to the first ring plate is in the range of 50mm to 75mm, the diameter of the high-pressure water discharge is in the range of 1mm to 2mm, the diameter of the high-pressure steam discharge is in the range of 3.5mm to 11mm, the diameter of the compressed air discharge is in the range of 6mm to 12mm, and the distance from the compressed air discharge to the first ring plate > the distance from the high-pressure steam discharge to the first ring plate > the distance from the high-pressure water discharge to the first ring plate, and the diameter of the compressed air discharge > the diameter of the high-pressure steam discharge > the diameter of the high-pressure water discharge.

2. The mixing nozzle of claim 1, wherein Further comprising: a first pipeline, which comprises a first coaxial section connected with the first nozzle and a first vertical section connected with the first coaxial section, the first coaxial section being coaxially distributed with the first nozzle, and the axis of the first vertical section being perpendicular to the axis of the first nozzle. a second pipe comprising a second coaxial section connected to the second nozzle and a second vertical section connected to the second coaxial section, the second coaxial section being coaxial with the second nozzle, and the axis of the second vertical section being perpendicular to the axis of the second nozzle; a third pipe comprising a third coaxial section connected to the third nozzle and a third vertical section connected to the third coaxial section, the third coaxial section being coaxial with the third nozzle, and the axis of the third vertical section being perpendicular to the axis of the third nozzle; wherein the first coaxial section penetrates the pipe wall of the second pipe, and the second coaxial section penetrates the pipe wall of the third pipe.

3. The hybrid nozzle of claim 1, wherein, Further comprising: a fourth pipe comprising a fourth coaxial section connected to the first nozzle and a fourth vertical section connected to the fourth coaxial section, the fourth coaxial section being coaxial with the first nozzle, and the axis of the fourth vertical section being perpendicular to the axis of the first nozzle; a fifth pipe comprising a fifth coaxial section connected to the second nozzle and a fifth vertical section connected to the fifth coaxial section, the fifth coaxial section being coaxial with the second nozzle, and the axis of the fifth vertical section being perpendicular to the axis of the second nozzle; a sixth pipe connected to the third nozzle and coaxial with the third nozzle; wherein the fifth vertical section penetrates the pipe wall of the sixth pipe, and the fourth vertical section penetrates the pipe wall of the fifth pipe and the pipe wall of the sixth pipe.

4. The hybrid nozzle of claim 1, wherein, Further comprising: a first nozzle mounted at the high-pressure water outlet end of the first nozzle; a gem seat mounted inside the first nozzle; a ruby mounted inside the gem seat; a flow guide sleeve mounted inside the first nozzle and abutting the ruby.

5. The hybrid nozzle of claim 1, wherein, Further comprising: a second nozzle mounted at the high-pressure steam outlet end of the second nozzle.

6. The hybrid nozzle according to any one of claims 1 to 5, wherein: the pipe wall of the second nozzle is tapered along the axial direction of the second nozzle, the large end of the second nozzle being used for entering high-pressure steam, and the small end of the second nozzle being used for discharging high-pressure steam; the pipe wall of the third nozzle is tapered along the axial direction of the third nozzle, the large end of the third nozzle being used for entering compressed air, and the small end of the third nozzle being used for discharging compressed air.

7. The hybrid nozzle according to any one of claims 1 to 5, wherein: the second nozzle comprises a first cylinder and a third ring plate connected to one end of the first cylinder, the central hole of the third ring plate being used for discharging high-pressure steam, and the other end of the first cylinder being used for entering high-pressure steam; the third nozzle comprises a second cylinder and a fourth ring plate connected to one end of the second cylinder, the central hole of the fourth ring plate being used for discharging compressed air, and the other end of the second cylinder being used for entering compressed air.

8. A method of deashing, characterized by, The ash removal method for the hybrid nozzle according to any one of claims 1 to 7, comprising: directing the hybrid nozzle towards the ash removal area; introducing high-pressure water into the cylindrical chamber, and controlling the pressure of the introduced high-pressure water to be in the range of 50 MPa to 100 MPa; The high-pressure steam is introduced into the first annular chamber, and the pressure of the introduced high-pressure steam is controlled to be in a range of 0.8 Mpa to 1.5 Mpa; The compressed air is introduced into the second annular chamber, and the pressure of the introduced compressed air is controlled to be in a range of 1.4 Mpa to 1.7 Mpa.

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