A deep hole explosion pulse ash cleaning device

Abstract

The embodiment of the present application discloses a kind of deep hole explosion pulse ash removal devices, including along the axial direction through the body formed with through cavity, set and communicate with ignition electrode around through cavity explosion cavity, the end cover of sealingly arranged in one end of through cavity, the valve seat of being arranged in the other end of through cavity, and the piston of being located in through cavity and being movably arranged along the axial direction;Explosion cavity ignition can push piston away from valve seat and move;Explosion cavity includes the collection chamber around through cavity, and is communicated with through cavity, and the hole channel communicated with collection chamber, and the ratio of length and diameter of hole channel is not less than 5.The present application is set to include collection chamber and hole channel by setting explosion cavity as the structure, and the size of hole channel is correspondingly set, and then introduce deep hole structure, explosion occurs in collection chamber and deep hole structure when detonation, based on the explosive airflow of step by step, to better realize ash removal operation, improve ash removal efficiency.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the field of explosion ash cleaning equipment, and particularly relates to a deep-hole explosion pulse ash cleaning device. BACKGROUND

[0002] At present, since most of the fuels are still non-clean fuels, a large amount of accumulated ash is easy to accumulate after combustion, and it is also difficult to remove the accumulated ash by light force. Therefore, a large amount of manpower and material resources need to be used in the cleaning process, and a large amount of time is spent on cleaning. Not only is it time-consuming and labor-intensive, but also the cleaning cost is high. Especially for the equipment in continuous use, the ash cleaning directly affects the generation efficiency and brings additional burden to the production cost.

[0003] In the prior art, a device for cleaning accumulated dust by using explosion generated pulse has appeared. For example, patent No. CN1839001A discloses a method and device for generating gas pulse, which is to deliver combustible gas and oxygen into a combustion chamber usually having an elongated shape, ignite the mixed gas to generate a pressure pulse, and then the pressure pulse is released from the combustion chamber and directed to an amplifying horn. That is, it is a direct explosion pulse generation method, and the released pulse force is completely dependent on the explosion gas.

[0004] For another example, patent No. CN102563672B discloses a pulse initiation cleaning system, and the technical scheme is that a common pipe is fluidly connected to a container, a first array of multiple elongated initiation pipes is arranged inside the common pipe upstream and fluidly connected to the inside of the common pipe, a second array of each initiator is arranged upstream of a corresponding initiation pipe in the multiple initiators and operably connected to the corresponding initiation pipe in the multiple initiation pipes, so that the actuation of each initiator in the multiple initiators causes combustion in the corresponding initiation pipe in the multiple initiation pipes. That is, it needs to operate multiple initiators, and the convenience of operation is greatly reduced. SUMMARY

[0005] Therefore, the embodiment of the present application provides a deep-hole explosion pulse ash cleaning device, which sets the explosion chamber as a structure including a collection chamber and a hole, and sets the size of the hole, thereby introducing a deep-hole structure. When detonation occurs, the collection chamber and the deep-hole structure are exploded, and the explosion gas flow is based on step-by-step, so that the ash cleaning operation is better realized and the ash cleaning efficiency is improved.

[0006] In order to achieve the above purpose, the embodiment of the present application provides the following technical scheme:

[0007] In one aspect of the embodiments of the present application, a deep hole explosion pulse ash cleaning device is provided, comprising a body with a through cavity formed along an axial direction, an explosion cavity arranged around the through cavity and connected to a firing electrode, an end cover sealingly arranged at one end of the through cavity, a valve seat arranged at the other end of the through cavity, and a piston movably arranged in the through cavity along the axial direction; wherein,

[0008] A venting opening is formed through the valve seat, and the piston can seal the venting opening when abutting against the valve seat;

[0009] Ignition of the explosion cavity can push the piston to move away from the valve seat;

[0010] The explosion cavity comprises a collection chamber arranged around the through cavity and connected to the through cavity, and a channel connected to the collection chamber, and the ratio of the length to the diameter of the channel is not less than 5.

[0011] As a preferred scheme of the present application, the channel is formed in at least one ring, and a plurality of channels are arranged in each ring, and each of the plurality of channels in each ring is arranged around the collection chamber with the axial line of the through cavity as the center line.

[0012] As a preferred scheme of the present application, an included angle α is formed between the axial line of the channel and the axial line of the through cavity, and 8°≤α≤20°.

[0013] As a preferred scheme of the present application, the through cavity comprises an air spring chamber and a sealed containing chamber sequentially formed from one end of the end cover to one end of the valve seat;

[0014] At least part of the outer wall of the piston is sealingly arranged with the inner wall of the air spring chamber.

[0015] As a preferred scheme of the present application, the piston comprises a first plug column sealingly arranged between the air spring chamber and the sealed containing chamber, and a second plug column extending from one end of the first plug column close to the valve seat, and the other end of the second plug column away from the first plug column can abut against the valve seat to seal the other end of the through cavity, and a gap is formed between the explosion cavity and the second plug column.

[0016] As a preferred scheme of the present application, a plurality of internal explosion chambers are formed around the first plug column in the circumferential direction, and a nozzle connected to the explosion cavity is formed outwardly on the internal explosion chamber.

[0017] As a preferred scheme of the present application, an end surface of the valve seat facing the end cover is formed as an inclined surface by extending inwardly and obliquely from the inside to the outside, and an included angle β is formed between the inclined surface and the axial line of the through cavity, and 55°≤β≤75°.

[0018] As a preferred scheme of the present application, the collection chamber is formed as a circular truncated cone structure, and the diameter of the end close to the end cover is larger than the diameter of the end close to the valve seat.

[0019] The hole communicates with the end close to the end cover in the collection chamber.

[0020] As a preferred scheme of the present application, the hole extends outward from the collection chamber in sequence to form a plurality of hole sections, and the diameters of the plurality of hole sections decrease in sequence.

[0021] The plurality of hole sections are coaxially arranged.

[0022] As a preferred scheme of the present application, the ratio of the diameters of two adjacent hole sections is 0.7-0.9.

[0023] The embodiments of the present application have the following advantages:

[0024] The deep-hole explosion pulse ash cleaning device provided by the present application generates an explosive mixture in the collection chamber and the hole communicating therewith by passing combustion gas into the explosion chamber, ignites the mixture by using an ignition electrode igniting the explosive mixture to generate an explosion shock wave. The shock wave generates turbulence in the explosion chamber, so that the shock wave reaches supersonic speed. The shock wave moving at supersonic speed makes the gas in front of the shock wave move at supersonic speed and generates a huge pressure area in front of the shock wave. The piston is pushed away and separated from the valve seat.

[0025] On this basis, the explosion wave passes through the explosion vent of the valve seat communicating with the collection chamber at supersonic speed, when the explosion wave approaches the ash cleaning space, the heat transfer surface required to be cleaned in the ash cleaning space first bears a huge pressure area, and then when the explosion wave passes, the pressure rapidly decreases. The pressure decrease causes the deposits and particles adhering to the surface of the heat transfer surface to fall off. Then, the process performed through the heat transfer surface or the continuous gas flow flowing through the chamber and then the heat transfer surface removes the loose deposits or particles from the heat transfer surface. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical schemes in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without paying creative labor.

[0027] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the conditions that can be implemented by the application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the application, should still fall within the scope covered by the disclosed technology.

[0028] Figure 1 A front view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 1 of the present application;

[0029] Figure 2 A front view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 1 of the present application;

[0030] Figure 3 A Figure 2 A sectional view along the direction of C-C;

[0031] Figure 4 A left view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 1 of the present application;

[0032] Figure 5A A front view of the piston provided for the embodiment of the present application;

[0033] Figure 5B A side view of the piston provided for the embodiment of the present application;

[0034] Figure 6 A right view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 1 of the present application;

[0035] Figure 7A A front view of the valve seat provided for the embodiment of the present application;

[0036] Figure 7B A side view of the valve seat provided for the embodiment of the present application;

[0037] Figure 8 A front view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 2 of the present application;

[0038] Figure 9 A front view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 2 of the present application;

[0039] Figure 10 A Figure 9 A sectional view along the direction of D-D;

[0040] Figure 11 A left view of the deep-hole explosion pulse ash cleaning device provided for Embodiment 2 of the present application;

[0041] Figure 12For Figure 11 A sectional view along the direction of E-E;

[0042] Figure 13 A structural schematic diagram of the hole provided for the embodiment 3 of the present application.

[0043] In the figure:

[0044] 1 - body; 2 - piston; 3 - valve seat; 4 - end cover; 5 - ignition electrode; 6 - copper ring; 7 - O-shaped rubber sealing ring; 8 - hole; 9 - gas spring chamber; 10 - collection chamber; 11 - implosion chamber; 12 - piston detonation chamber; 13 - electrode joint; 14 - air inlet joint; 15 - gas spring joint; 16 - nozzle ring cover; 17 - nozzle; 18 - piston top; 19 - small piston skirt; 20 - large piston skirt; 21 - piston sealing curved surface; 22 - piston end face; 23 - blow-off port boss; 24 - inclined surface; 25 - valve seat O-shaped rubber sealing ring; 26 - valve seat sealing groove; 27 - valve seat axis; 28 - sealing ring groove; 29 - body axis; 30 - hole center line; 31 - hole outer ring center line; 32 - hole section; DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in detail by the following specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the specification. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] The specific embodiments of the present application will be further described below in conjunction with the accompanying drawings. It should be noted that the description of the structure of the piston 2 is a corresponding specific description by disassembling each surrounding edge or end face. For example, the large piston skirt 20 is the outermost surrounding edge, the small piston skirt 19 is the inner surrounding edge with a slightly smaller diameter, and the piston top 18 is the closed end of one end. Moreover, the blow-off port is located at the center of the valve seat 3, and the blow-off port is in communication with the dust removal space.

[0047] Embodiment 1:

[0048] As Figure 1 As shown in FIG. 7, the present application provides a deep-hole explosion pulse dust removal device, and the specific structure is as follows:

[0049] The body 1 is cylindrical in shape, with a central left circular hole as a gas spring chamber 9, sealed by an end cover 4 (wherein a gas spring joint 15 can also be provided on the end cover 4), a piston top 18 and a large piston skirt 20 of a piston 2 are in the central left circular hole, an O-shaped rubber sealing ring 7 provided on the piston 2 is in contact with the wall of the circular hole (i.e. the inner wall of the gas spring chamber 9) to seal, further, a sealing ring groove 28 can also be formed on the outer circumferential surface of the piston 2, and a copper ring 6 is provided in the sealing ring groove 28. A small circular hole (i.e. a sealed containing chamber) is connected to the central left circular hole (i.e. the gas spring chamber 9) of the body 1, which is communicated with a collection chamber 10, the collection chamber 10 is a inverted circular conical hole, the other side of the collection chamber 10 is connected with a circular hole, which is a valve seat 3 fitting hole, a hole 8 is provided on the left wall of the inverted circular conical hole of the collection chamber 10, the diameter of the hole 8 is 50mm, the depth of the hole 8 is 365mm, the hole center line 30 (i.e. its axis) of the hole 8 and the body axis 29 (i.e. the axis of the body 1) of the body 1 form an angle α, the angle α = 12.5°, the generatrix of the inverted circular conical hole of the collection chamber 10 is parallel to the hole center line of the hole 8. The number of holes 8 is 8, which are uniformly arranged on the circular ring with a radius of the distance from the intersection point of the hole center line 30 along the body axis of the body 1 to the left circular surface of the inverted circular conical hole of the collection chamber 10 to the body axis of the body 1, and the hole center line 30 of the hole 8 is uniformly arranged on the inclined surface of the circular conical hole.

[0050] Figure 3 For Figure 2 The cross-sectional view along the C-C direction shows that the holes 8 are arranged symmetrically around the body axis 29 of the body 1, and the center points of the cross sections of the holes 8 are uniformly distributed on a cross-sectional concentric circle. Figure 3

[0051] Two gas inlet joints 14 are provided on the body 1 and communicated with the space of the collection chamber 10. One gas inlet joint 14 is connected with a gas source pipeline to enter gas, and the other gas inlet joint 14 is connected with an oxygen source pipeline or a compressed air source pipeline to enter oxygen or compressed air. The gas and the oxygen or compressed air are preferably configured in a stoichiometric ratio of 1, so that the explosion effect is best after full premixing.

[0052] The valve seat 3 is not only the object to be sealed in combination with the piston 2, but also the shock wave dust removal explosion vent. The center of the valve seat 3 is a through hole, the right side is a flange, the flange is connected with a circular tube, and the circular tube is inserted into the right circular hole of the body 1. A valve seat sealing groove 26 is arranged at the right angle contact between the flange of the valve seat 3 and the circular tube, and a valve seat O-shaped rubber sealing ring 25 is installed in the valve seat sealing groove 26. A valve seat sealing curved surface (i.e. it is formed as an inclined surface 24) is provided at the junction between the circular tube of the valve seat 3 and the collection chamber 10, and the inclined line of the inclined surface 24 and the valve seat axis 27 form an angle β, β = 72°. In order to reduce the influence on the valve seat 3 after explosion, a vent protrusion 23 can also be further provided.

[0053] ​The piston 2 is a plug structure with an implosion chamber 11. The piston 2 is composed of a piston top 18, a large piston skirt 20, a small piston skirt 19, a piston sealing curved surface 21, and a piston end surface 22. The small piston skirt 19 is inserted into the large piston skirt 20 and extends to the piston top 18. A nozzle ring cover 16 is arranged on the large piston skirt 20 and the small piston skirt 19. The nozzle ring cover 16 is uniformly provided with nozzles 17, which are connected to the implosion chamber 11 and a piston ignition chamber 12. The piston ignition chamber 12 is a space between the nozzle ring cover 16, a circular hole wall surface of the gas spring chamber 9, and an outer wall surface of the small piston skirt 19. The space is a space when the piston 2 and the valve seat 3 are in a combined sealing state. A gap between the small piston skirt 19 and the central through hole of the body 1 needs to ensure the ability of the mixed gas ignition explosion to transmit the flame. The gap is connected to the piston ignition chamber 12 and the collection chamber 10. In order to better ensure the ignition explosion of the implosion chamber 11, two or more ignition slots can be uniformly arranged on the circular hole wall surface of the body 1 where the small piston skirt 19 is located. When the piston 2 is used, the piston 2 can be driven to move faster when the ignition explosion is triggered. The gas in the implosion chamber 11 is connected to the collection chamber 10 through the nozzles 17, the gap between the small piston skirt 19 and the stroke cylinder wall, and the collection chamber 10. When the collection chamber 10 explodes, the implosion chamber 11 almost simultaneously explodes, quickly releases the sealing of the piston 2, and generates an impact wave in each hole 8 when the explosion occurs. The impact wave is collected in the collection chamber 10, and a larger explosion pulse pressure peak can be generated in the collection chamber 10. The explosion pulse is input into the dust cleaning space through the through hole of the valve seat 3.

[0054] The collection chamber 10 is connected to an electrode connector 13 for ignition. The electrode connector 13 is connected to the ignition electrode 5. The pre-mixed gas is ignited through the ignition electrode 5. The implosion chamber 11 connected to the collection chamber 10 also explodes. The explosion force overcomes the gas pressure of the gas spring chamber 9, so that the piston 2 moves rapidly in the direction of the piston top 18. The sealing between the piston 2 and the valve seat 3 is opened instantaneously. The explosion generates a shock wave, which is discharged through the through hole of the valve seat 3 and transmitted to the dust cleaning space, so as to achieve the purpose of dust cleaning.

[0055] Embodiment 2

[0056] As shown in Figures 8-12 Another deep hole explosion pulse dust cleaning device is provided. The specific structure is as follows:

[0057] The body 1 is a cylindrical shape, the center left circular hole is the gas spring chamber 9, the piston top 18 and the piston outer skirt 20 of the piston 2 are in the center left circular hole, and the O-shaped rubber sealing ring 7 arranged on the piston 2 is in contact with the wall of the circular hole (i.e. the inner wall of the gas spring chamber 9) to seal. A small circular hole (i.e. a sealed containing chamber) is connected to the center left circular hole (i.e. the gas spring chamber 9) of the body 1, which is communicated with the collection chamber 10, which is a inverted circular truncated cone hole, and the other side of the collection chamber 10 is connected with a circular hole, which is the valve seat 3 fitting hole, and the hole 8 is arranged on the left wall of the inverted circular truncated cone hole of the collection chamber 10, the diameter of the hole 8 is 50mm, the depth of the hole 8 is 365mm, the angle α between the hole center line 30 (i.e. the axis) of the hole 8 and the body axis 29 of the body 1 is 10°, and the generatrix of the inverted circular truncated cone hole of the collection chamber 10 is parallel to the hole center line. The number of hole 8 is 8, which is uniformly arranged on the circular ring with the center of the hole center line 30 along the body axis as the center and the left circular surface intersection point of the inverted circular truncated cone hole of the collection chamber 10 as the radius, and the hole center line 30 of the hole 8 is uniformly arranged on the conical inclined surface.

[0058] Figure 10 The D-D cross-sectional view of Figure 9 As can be seen from Figure 10 , the hole 8 is divided into an inner circle and an outer circle (the center line of the hole 8 on the outer circle is further defined as the hole outer ring center line 31, which can be parallel or not parallel to the center line of the hole 8 on the inner circle, i.e. the hole center line 30, and the skilled person in the art can make specific selection according to the actual situation), and the inner circle and outer circle hole 8 are arranged symmetrically along the periphery of the body axis 29 of the body 1, the center points of the cross section of the hole 8 on the inner circle are uniformly distributed on a cross section concentric circle, the center points of the cross section of the hole 8 on the outer circle are uniformly distributed on a large concentric circle, and the inner circle concentric circle is concentric with the outer circle concentric circle. More specifically, the hole 8 is arranged obliquely along the center line of the body 1, and the intersection points of the hole center line of the hole 8 on the rear end surface of the collection chamber 11 are uniformly arranged on two or more concentric circles, the outer ring concentric circle is larger than the inner ring concentric circle, and the larger outer ring concentric circle is larger than the outer ring concentric circle, the intersection line of the intersection points of the hole center line of the hole 8 on the rear end surface of the collection chamber 10 and the center of the concentric circle coincides with the odd ring (such as one ring and three rings), and the intersection line of the intersection points of the hole center line of the hole 8 on the rear end surface of the collection chamber 10 and the center of the concentric circle coincides with the even ring (such as two rings and four rings), and the intersection points of the intersection points of the hole center line of the hole 8 on the rear end surface of the collection chamber 10 and the center of the concentric circle are uniformly arranged.

[0059] Two gas inlet joints 14 are arranged on the body 1 and communicated with the space of the collection chamber 10. One gas inlet joint 14 is connected with the gas source pipeline to enter the gas, and the other gas inlet joint 14 is connected with the oxygen source pipeline or the compressed air source pipeline to enter the oxygen or compressed air. The gas and oxygen or compressed air are preferably configured in a stoichiometric ratio of 1, so that the explosion effect is best after full premixing.

[0060] Valve seat 3 is both the object of sealing with piston 2, and the blast hole of shock cleaning. The center of valve seat 3 is a through hole, and the right side is a flange, which is connected with a circular tube inserted into the right circular hole of body 1. At the right angle contact between the flange of valve seat 3 and the circular tube, valve seat sealing groove 26 is arranged, and O-shaped rubber sealing ring 25 is installed in a matched manner. Valve seat sealing curved surface is arranged at the joint between the circular tube of valve seat 3 and collection chamber 10 (i.e. it is formed as inclined surface 24), and the angle between the inclined line of inclined surface 24 and valve seat axis 27 is β, and β = 72°. In order to reduce the influence on valve seat 3 after explosion, blast hole boss 23 can be further arranged here.

[0061] Piston 2 is a plug body structure with inner blast chamber 11. Piston 2 is composed of piston top 18, piston large skirt 20, piston small skirt 19, piston sealing curved surface 21, and piston end surface 22. The piston small skirt 19 is inserted into the piston large skirt 20 and extends to the piston top 18. Nozzle ring cover 16 closes the gap between the piston large skirt 20 and the piston small skirt 19. Nozzles 17 are uniformly arranged on nozzle ring cover 16, and nozzles 17 are connected with piston inner blast chamber 11 and piston ignition chamber 12. Piston ignition chamber 12 is the space between the piston nozzle ring cover 16 and the circular hole wall surface and the outer wall surface of the piston small skirt 19 at one end surface of the circular hole where gas spring chamber 9 is located. The space is the space when piston 2 and valve seat 3 are in a combined sealing state. The gap between the piston small skirt 19 and the central through hole of body 1 needs to ensure the ability of mixed gas ignition explosion flame transmission, and the gap connects piston ignition chamber 12 and collection chamber 10. In order to better ensure the ignition explosion of inner blast chamber 11, 2 or more ignition square grooves can be uniformly arranged on the circular hole wall surface of body 1 where the piston small skirt 19 is located under the condition of low gap.

[0062] Collection chamber 10 is connected with electrode joint 13 for ignition, electrode joint 13 is connected with ignition electrode 5, and the premixed gas is ignited through ignition electrode 5. Inner blast chamber 11 connected with collection chamber 10 also explodes, and the explosion force overcomes the gas pressure of gas spring chamber 9, so that piston 2 moves rapidly to the direction of piston top 18. The sealing between piston 2 and valve seat 3 is opened instantaneously, the explosion generates a shock wave that is discharged through the through hole of valve seat 3 and transmitted to the dust cleaning space, achieving the purpose of dust cleaning.

[0063] Example 3:

[0064] On the basis of example 1 or example 2, further, the hole 8 is arranged in a structure of multiple sections in communication, that is, it is still an entire hole 8, but it has a structure of multiple hole sections 32, and the diameters of the multiple hole sections 32 are not completely the same, so as to realize the step-by-step pressure adjustment inside.

[0065] Further, the diameter of the hole section 32 on the side away from the collection chamber 10 in each hole channel 8 is the smallest, and the diameters of the hole sections on one hole channel 8 decrease successively, i.e. the diameter of the hole section 32 on the side close to the collection chamber 10 is the largest. Moreover, the ratio of the diameters of two adjacent hole sections is between 0.7 and 0.9, preferably 0.9. More preferably, 2 to 4 hole sections 32 are formed on each hole channel 8.

[0066] Although the present application has been described in detail with general description and specific embodiments above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present application. Therefore, these modifications or improvements made without departing from the spirit of the present application are within the scope of the present application.

Claims

1. A deep hole explosion pulse ash cleaning device, characterized in that, The body (1) is provided with a through cavity formed along the axial direction, an explosion cavity is arranged around the through cavity and communicates with the ignition electrode (5), an end cover (4) is sealingly arranged at one end of the through cavity, a valve seat (3) is arranged at the other end of the through cavity, and a piston (2) is movably arranged in the through cavity along the axial direction. The valve seat (3) is provided with a vent hole formed through the valve seat (3), and the piston (2) can close the vent hole when the piston (2) is in contact with the valve seat (3). The explosion cavity is ignited to push the piston (2) to move away from the valve seat (3). The explosion cavity includes a collection chamber (10) arranged around the through cavity and communicating with the through cavity, and a channel (8) communicating with the collection chamber (10), and the length-diameter ratio of the channel (8) is not less than 5. The channel (8) is formed into at least one ring, and each ring of the channel (8) is provided with a plurality of channels (8), and each of the plurality of channels (8) in each ring is arranged around the collection chamber (10) with the axis of the through cavity as the center line. An included angle α is formed between the axis of the channel (8) and the axis of the through cavity, and 8°≤α≤20°.

2. The device according to claim 1, wherein, The through cavity includes a gas spring chamber (9) and a closed containing chamber formed in sequence from one end of the end cover (4) to one end of the valve seat (3). At least part of the outer wall of the piston (2) is sealingly arranged with the inner wall of the gas spring chamber (9).

3. The device according to claim 2, wherein, The piston (2) includes a first plug column sealingly arranged between the gas spring chamber (9) and the closed containing chamber, and a second plug column extending from one end of the first plug column close to the valve seat (3), and the other end of the second plug column away from the first plug column can be in contact with the valve seat (3) to close the other end of the through cavity, and a gap is formed between the explosion cavity and the second plug column.

4. The deep hole explosion pulse ash cleaning device according to claim 3, characterized in that, The first plug column is circumferentially formed with a plurality of internal explosion chambers (11), and the internal explosion chambers (11) are outwardly formed with nozzles (17) communicating with the explosion cavity.

5. The device according to any one of claims 1-3, wherein, The end face of the valve seat (3) facing the end cover (4) is inwardly and outwardly formed into a bevel (24), and an included angle β is formed between the bevel (24) and the axis of the through cavity, and 55°≤β≤75°.

6. The device according to any one of claims 1-3, wherein, The collection chamber (10) is formed into a circular truncated cone structure, and the diameter of one end close to the end cover (4) is greater than the diameter of one end close to the valve seat (3). The channel (8) communicates with one end of the collection chamber (10) close to the end cover (4).

7. The device according to claim 6, wherein, The channel (8) is outwardly formed into a plurality of hole segments (32) in sequence, and the diameters of the plurality of hole segments (32) decrease in sequence. The plurality of hole segments (32) are coaxially arranged.

8. The deep hole explosion pulse ash cleaning device according to claim 7, characterized in that, The ratio of the diameters of two adjacent hole segments (32) is 0.7-0.9.

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