CN217715003U - Pipeline assembly and boiler system - Google Patents

Abstract

An embodiment of the utility model discloses a pipeline subassembly and boiler system, the pipeline subassembly includes pipeline body and grid, and the at least part of pipeline body extends along upper and lower direction, and the grid is established in the at least part of pipeline body, and the at least part of grid extends and sets up towards the inner peripheral surface slope of pipeline body along the direction from the top down, and separates in order to form the whereabouts opening between the bottom of grid and the inner peripheral surface of pipeline body. The utility model discloses pipeline subassembly and boiler system have cubic hard ash can automatic discharge's advantage.

Description

Pipeline assembly and boiler system

Technical Field

The utility model relates to a fume apparatus technical field, concretely relates to pipeline assembly and boiler system.

Background

The flue gas desulfurization and denitration technology is a boiler flue gas purification technology applied to the chemical industry of generating multi-nitrogen oxides and sulfur oxides, and for example, an SCR device, an SNCR device and the like are arranged in a flue. However, when the SCR apparatus or the SNCR apparatus is operated, substances such as ammonia water are produced, dust in the flue is mixed with the ammonia water and then converted from a floating ash state to hard ash lumps, and the hard ash lumps accumulate on an economizer, a superheater, and other devices in the flue, thereby causing the flue to be blocked.

In the related art, a horizontal screen is arranged above the economizer, the superheater and other equipment in the flue, and the screen is used for intercepting the blocky hard ash, so that the blocky hard ash is prevented from being accumulated on the economizer, the superheater and other equipment or being clamped between the economizer, the superheater and other equipment and the flue wall. However, the related art has a problem that the screen is required to be periodically taken out to clean the blocked hard ash, which is intercepted by the screen, resulting in inconvenient use.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a pipeline assembly, this pipeline assembly has cubic hard ash can automatic discharge's advantage.

The embodiment of the utility model provides a boiler system has cubic hard ash and can discharge automatically, and the advantage that the jam can not appear all around in the air preheater still provided.

The pipeline assembly provided by the embodiment of the utility model comprises a pipeline body, at least part of which extends along the up-and-down direction;

a grill provided in at least a portion of the pipe body, the grill extending at least in part in an up-down direction and being disposed obliquely toward an inner circumferential surface of the pipe body, and a bottom end of the grill being spaced apart from the inner circumferential surface of the pipe body to form a drop opening.

The utility model discloses the pipe assembly extends and sets up towards the inner peripheral surface slope of pipeline body at least part along the direction from the top down of grid to spaced apart in order forming the whereabouts opening between the inner peripheral surface of the bottom of grid and pipeline body, thereby make the downward opening that falls of materials such as cubic hard ash of grid interception remove under inclination's guide effect, and from the automatic discharge of whereabouts opening.

In some embodiments, at least a portion of the grill is angled at between 20 ° and 43 ° from the direction of extension of the duct body.

In some embodiments, the grid includes a horizontal section and an inclined section, a top end of the inclined section is connected to an edge of the horizontal section, the inclined section extends in an up-down direction and is arranged to be inclined toward an inner circumferential surface of the pipe body, and the falling opening is formed between a bottom end of the inclined section and the inner circumferential surface of the pipe body.

In some embodiments, the number of the inclined sections is at least two, and at least two of the inclined sections are symmetrically arranged with the horizontal section as a center; or the peripheral contour of the cross section of the inclined section is circular.

In some embodiments, the conduit assembly further comprises:

a first mounting member connected to the pipe body, the first mounting member being connected to at least one of a top end of the inclined section and an edge of the horizontal section;

the second installation part is connected with the pipeline body, and the second installation part is connected with the bottom end of the inclined section.

In some embodiments, the pipe body includes a narrow diameter section, a flared section and a wide diameter section which are connected in sequence from top to bottom, the caliber size of the narrow diameter section is smaller than that of the wide diameter section, at least part of the inclined section is located in the flared section, and the falling opening is formed between at least one of the inner peripheral surface of the flared section, the inner peripheral surface of the wide diameter section and the connection of the flared section and the wide diameter section and the bottom end of the inclined section.

In some embodiments, the cross-sectional area of the flaring segment gradually increases along the direction from top to bottom, at least part of the inner peripheral surface of the flaring segment is parallel to the length direction of the inclined segment, and the distance between at least part of the inner peripheral surface of the flaring segment and the corresponding inclined segment is 350mm-450mm.

In some embodiments, the duct body has a drop passage therein, a top end of the drop passage communicating with the drop opening, the drop passage having a size of 300mm to 400mm in a radial direction of the duct body.

The boiler system of the embodiment of the utility model comprises a flue, wherein the flue is a pipeline assembly according to any one of the embodiments;

the coal economizer is arranged in the pipeline body;

the air preheater is arranged in the pipeline body and is positioned below the coal economizer, the air preheater and the inner wall surface of the pipeline body are spaced to form a falling channel, and the grating is arranged between the coal economizer and the air preheater.

The utility model discloses boiler system has at least part of the grid of pipeline subassembly and extends and set up towards the inner peripheral surface slope of pipeline body along the direction from the top down, makes the grid interception for example the cubic hard ash of material move at inclination's guide effect under the opening that falls to from automatic exhaust advantage and technological effect of whereabouts opening, simultaneously because the grid is established the economizer with between the air preheater, and the air preheater with spaced apart so as to form the passageway that falls between the internal face of pipeline body, consequently the grid interception for example cubic hard ash of material follow the passageway that falls discharges, and can not jam around the air preheater.

In some embodiments, the boiler system further comprises an ash storage hopper and an ash discharge valve, the ash storage hopper is arranged in the pipeline body and located at the downstream of the falling opening, the ash storage hopper is provided with an ash inlet, an ash outlet and an ash outlet channel, the ash inlet is communicated with the falling opening, the ash outlet is located below the ash inlet, the cross-sectional area of the ash outlet is smaller than that of the ash inlet, the ash outlet is communicated with the ash outlet channel, and the ash discharge valve is arranged on the ash outlet channel.

Drawings

FIG. 1 is a schematic structural diagram of a boiler system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an ash storage hopper in a boiler system according to an embodiment of the present invention;

fig. 3 is a schematic view of the first and second mounting members of fig. 1.

Reference numerals are as follows:

1. a pipe body; 11. a narrow diameter section; 12. a flared section; 13. a wide diameter section; 2. a grid; 21. a horizontal segment; 22. an inclined section; a drop opening; 4. a first mounting member; 41. a first fixing hole; 42. a first connection hole; 5. a second mounting member; 51. a second fixing hole; 52. a first connection hole; 6. a drop passage; 7. a coal economizer; 8. an air preheater; 9. a dust storage hopper; 91. an ash inlet; 92. an ash outlet; 93. a first stage; 94. an ash discharge channel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A pipe assembly and a boiler system according to embodiments of the present invention will be described with reference to fig. 1-3.

As shown in fig. 1 and 3, the duct assembly according to the embodiment of the present invention includes a duct body 1 and a grill 2, at least a portion of the duct body 1 extends in an up-down direction, the grill 2 is provided in at least a portion of the duct body 1, at least a portion of the grill 2 extends in an up-down direction and is inclined toward an inner peripheral surface of the duct body 1, and a bottom end of the grill 2 is spaced apart from the inner peripheral surface of the duct body 1 to form a drop opening 3.

The utility model discloses the pipe assembly extends and sets up towards the inner peripheral surface slope of pipeline body at least part along the direction from the top down of grid to spaced apart in order forming the whereabouts opening between the inner peripheral surface of the bottom of grid and pipeline body, and material such as cubic hard ash is removed under grid inclination's guide after the grid interception, and discharges automatically from the whereabouts opening, thereby avoids cubic hard ash to block up the pipeline and need regularly dismantle the problem of grid.

In some embodiments, at least part of the grid 2 is angled at an angle of 20 ° to 43 ° to the direction of extension of the pipe body 1.

The inclination of at least part of the grating 2 at an angle of 20-43 degrees enables the blocked hard ash and other substances to smoothly move to the falling opening, and avoids the blocked hard ash and other substances from being clamped on the grating due to factors such as resistance.

In some embodiments, the grating 2 includes a horizontal section 21 and an inclined section 22, a top end of the inclined section 22 is connected to an edge of the horizontal section 21, the inclined section 22 extends in an up-down direction and is obliquely disposed toward an inner circumferential surface of the pipe body 1, and a drop opening 3 is formed between a bottom end of the inclined section 22 and the inner circumferential surface of the pipe body 1.

As shown in fig. 1, the grid 2 includes a horizontal section 21 and inclined sections 22 located at the left and right sides of the horizontal section 21, the top end of the inclined section 22 at the left side is connected to the left edge of the horizontal section 21, the bottom of the inclined section 22 at the left side extends downward and inclines leftward, and a falling opening 3 is formed at an interval between the bottom of the inclined section 22 at the left side and the left inner wall of the pipe body 1, the top end of the inclined section 22 at the right side is connected to the right edge of the horizontal section 21, the bottom of the inclined section 22 at the right side extends downward and inclines rightward, and another falling opening 3 is formed at an interval between the bottom of the inclined section 22 at the right side and the right inner wall of the pipe body 1.

Impurity including cubic hard ash etc. is followed from the top down and falls in the pipeline body, at the in-process that falls, the cubic hard ash that is greater than the grid net is intercepted, wherein cubic hard ash can be by the interception of slope section, also can be by the interception of horizontal segment, the cubic hard ash of striking horizontal segment can remove to the left and right sides and fall on the slope section that corresponds one side under the effect of bounce or grid vibrations, then cubic hard ash rolls to the whereabouts opening along the extending direction of slope section, and pass the whereabouts opening and continue to fall downwards.

The horizontal section of the grating plays a role in reducing the space occupied by the grating in the up-down direction.

It will be appreciated that the construction of the grid is not limited to including both horizontal and inclined sections, and in other embodiments the grid may include only inclined sections, for example a grid in the form of a flat plate extending in an up-down direction and inclined towards the left or right side, or a grid in the form of a pyramidal side extending in an up-down direction and inclined outwards.

In some embodiments, there are at least two inclined sections 22, and the at least two inclined sections 22 are symmetrically arranged with the horizontal section 21 as the center; or the peripheral profile of the cross section of the inclined section 22 is circular.

As shown in fig. 1, the grid 2 includes a horizontal section 21 and inclined sections 22 located on the left and right sides of the horizontal section 21, the top end of the inclined section 22 on the left side is connected to the left edge of the horizontal section 21, the bottom of the inclined section 22 on the left side extends downward and is inclined to the left, the top end of the inclined section 22 on the right side is connected to the right edge of the horizontal section 21, and the bottom of the inclined section 22 on the right side extends downward and is inclined to the right.

It can be understood that the structure of the grating is not limited to the arrangement of the inclined sections on the left and right sides of the horizontal section, in other embodiments, the left and right sides of the horizontal section are respectively provided with one inclined section, and simultaneously, the front and back sides of the horizontal section, which are perpendicular to the paper surface, are also respectively provided with one inclined section; or the inclined section surrounds the horizontal section, and the inclined section is in the shape of the side face of the frustum which extends along the vertical direction and inclines outwards.

In some embodiments, the pipe assembly further comprises a first mounting member 4 and a second mounting member 5, the first mounting member 4 being connected to the pipe body 1, the first mounting member 4 being connected to at least one of a top end of the inclined section 22 and an edge of the horizontal section 21, the second mounting member 5 being connected to the pipe body 1, the second mounting member 5 being connected to a bottom end of the inclined section 22.

As shown in fig. 1 and 3, each of the first installation member 4 and the second installation member 5 is a plate member extending 2000mm to 35000mm in the front-rear direction, and each of the first installation member 4 and the second installation member 5 is two, each of the first installation member 4 is provided with a first fixing hole 41 at its front end and rear end, each of the second installation member 5 is provided with a second fixing hole 51 at its front end and rear end, a plurality of support members such as angle irons are provided on the inner circumferential surface of the pipe body 1, the first installation member 4 is connected to the corresponding support member after penetrating through the first fixing hole 41 by a connecting member such as a bolt, so as to fix the first installation member 4 in the pipe body 1, the second installation member 5 is connected to the corresponding support member after penetrating through the second fixing hole 51 by a connecting member such as a bolt, so as to fix the second installation member 5 in the pipe body 1, and the first installation member 4 is located above the second installation member 5.

First installed part 4 has a plurality of first connecting hole 42 of arranging along its length direction interval, second installed part 5 has a plurality of second connecting hole 52 of arranging along its length direction interval, horizontal segment 21 is located between two first installed parts 4 that are parallel and the interval was arranged along left and right sides direction, and the left side edge of horizontal segment 21 passes through the partial first connecting hole 42 of the first installed part 4 on left side of a plurality of connecting pieces one-to-one such as bolt, thereby connect horizontal segment 21 and left first installed part 4, likewise, the right side edge of horizontal segment 21 also is connected with right side first installed part 4 through a plurality of connecting pieces such as bolt.

The top end of the inclined section 22 is connected to the first mounting member 4 by a plurality of first connection holes 42 penetrating the remaining portion of the corresponding first mounting member 4 in a one-to-one correspondence via a plurality of connection members such as bolts, and the bottom end of the inclined section 22 is connected to the second mounting member 5 by a plurality of second connection holes 52 penetrating the corresponding second mounting member 5 in a one-to-one correspondence via a plurality of connection members such as bolts.

Due to the fact that the inclined section 22 has an inclination angle of 20-43 degrees, in order to facilitate the connection of the inclined section 22 and the second mounting part 5, the second mounting part 5 is arranged in the pipe body 1 in parallel with the inclined section 22, in other words, the second mounting part 5 has an angle of 20-43 degrees with the up-down direction.

It will be appreciated that the second mount is not limited to being parallel to the second mount and in other embodiments the second mount is arranged vertically within the pipe body.

It will be appreciated that in other embodiments, the first mounting member is connected to only the top end of the tilt section, the second mounting member is connected to the bottom end of the tilt section, and the horizontal section is directly connected to the tilt section to achieve the mounting and fixing of the horizontal section; or the first installation part is only connected with the edge of the horizontal section, the second installation part is connected with the bottom end of the inclined section, and the horizontal section is installed through the first installation part, and the inclined section is installed through the second installation part.

It is understood that the structure of the first installation member and the second installation member is not limited to a plate, in other embodiments, the inclined section is in the shape of a frustum side extending in the up-down direction and inclining outward, the horizontal section is circular, in this case, the first installation member and the second installation member each include an annular bracket and a connection bracket, the annular bracket of the first installation member surrounds the outer peripheral surface of the horizontal section, the circumferential top end of the inclined section surrounds the annular bracket of the first installation member, the connection bracket of the first installation member is a rod member connecting the annular bracket of the first installation member and the pipe body, the annular bracket of the second installation member surrounds the circumferential bottom end of the inclined section, and the connection bracket of the second installation member is a rod member connecting the annular bracket of the second installation member and the pipe body.

In some embodiments, the pipe body 1 includes a narrow diameter section 11, a flared section 12 and a wide diameter section 13 connected in sequence from top to bottom, the caliber size of the narrow diameter section 11 is smaller than that of the wide diameter section 13, at least part of the inclined section 22 is located within the flared section 12, and a drop opening 3 is formed between at least one of the inner peripheral surface of the flared section 12, the inner peripheral surface of the wide diameter section 13 and the connection of the flared section 12 and the wide diameter section 13 and the bottom end of the inclined section 22.

As shown in fig. 1, the inclined section 22 extends downward from the narrow section 11 and passes through the flared section 12, the bottom of the inclined section 22 is located in the wide section 13, the falling opening 3 is formed between the inner peripheral surface of the wide section 13 and the bottom end of the inclined section 22, the first mounting member 4 is located in the narrow section 11, and the second mounting member 5 is located in the wide section 13.

The structure that the pipeline body includes narrow diameter section, flaring section and wide diameter section makes between flaring section and the slope section to and all have the space that is suitable for cubic hard ash to pass through between wide diameter section and the slope section, avoid cubic hard ash card between slope section and flaring section, perhaps block between slope section and wide diameter section, the structure of pipeline body also makes the compact structure of pipeline body when guaranteeing that cubic hard ash can fall smoothly.

It is understood that the structure of the pipe body is not limited to include a narrow diameter section, a flared section and a wide diameter section which are connected in sequence from top to bottom, and in other embodiments, the pipe body is a vertical pipe with the same diameter as the wide diameter section.

In some embodiments, the cross-sectional area of the flared section 12 gradually increases in the direction from top to bottom, at least a portion of the inner circumferential surface of the flared section 12 and the length direction of the inclined section 22 are parallel, and the distance between at least a portion of the inner circumferential surface of the flared section 12 and the corresponding inclined section 22 is 350mm to 450mm.

As shown in fig. 1, the front end and the rear end of the flared section 12 both extend vertically in the up-down direction, the front end and the rear end of the grille are respectively abutted against the inner peripheral surface of the narrow diameter section 11, the inner peripheral surface of the flared section 12 and the inner peripheral surface of the wide diameter section 13, the left end of the flared section 12 is parallel to the left inclined section 22, the distance between the two inclined sections is 350mm-450mm, the right side of the flared section 12 is parallel to the right inclined section 22, and the distance between the two inclined sections is 350mm-450mm.

At least part of the inner peripheral surface of the flaring section is parallel to the length direction of the inclined section, and the distance between the inner peripheral surface of the flaring section and the inclined section is 350mm-450mm, so that the blocky hard ash can be ensured to smoothly pass through the space between the flaring section and the inclined section.

It will be appreciated that in other embodiments, the cross-sectional outer peripheral profile of the flared section is circular, the inclined section is in the shape of a side of a cone or a side of a frustum, and an annular space is formed between the inclined section and the inner peripheral surface of the flared section at a distance of 350mm-450mm.

In some embodiments, the duct body 1 has a dropping passage 6 therein, the top end of the dropping passage 6 communicates with the dropping opening 3, and the size of the dropping passage 6 in the radial direction of the duct body 1 is 300mm to 400mm.

As shown in fig. 1, the wide diameter section 13 has dropping passages 6 on both left and right sides, the distance of the dropping passages 6 in the left-right direction is 300mm to 400mm, the top ends of the dropping passages 6 communicate with the dropping opening 3 on the corresponding side, and the lump-shaped hard ashes discharged from the dropping opening 3 enter the dropping passages 6 and continue to drop without falling on the equipment below the grating.

It will be appreciated that in other embodiments the wide diameter section is cylindrical and the inclined section is pyramidal or frustoconical in shape, in which case the drop chute is an annular space extending in an up and down direction.

In some embodiments, the grid is made up of a plurality of grid plates, in other words, the grid is modular. Each grid plate or module is 1.6 meters by 0.4 meters-2 meters by 0.4 meters.

In some embodiments, the grid includes grid riser, grid horizontal stick and grid frame, and the grid riser extends along left right direction, and the grid riser is a plurality of, and a plurality of grid risers are arranged along the parallel and interval of fore-and-aft direction, and the grid horizontal stick extends along the fore-and-aft direction, and the grid horizontal stick is a plurality of, and a plurality of grid horizontal sticks are arranged along the parallel and interval of left right direction, and a plurality of grid risers and a plurality of grid horizontal sticks are connected and are formed the grid net, and the periphery after a plurality of grid risers and a plurality of grid horizontal sticks are connected is encircleed to the grid frame.

The structure that a plurality of grid risers and a plurality of grid horizontal bar are connected can guarantee the intensity and the rigidity of grid, simultaneously can the at utmost reduce the resistance that cubic hard ash removed.

It is understood that the structure of the grille is not limited to the grille vertical plates, the grille horizontal rods and the grille frame, and in other embodiments, the grille comprises a plurality of vertical plates extending along the left-right direction and a plurality of vertical plates extending along the front-back direction.

As shown in fig. 1 and 2, the utility model discloses boiler system of embodiment includes flue, economizer 7 and air preheater 8, and the flue does the utility model discloses the pipeline assembly of embodiment, economizer 7 are established in pipeline body 1, and air preheater 8 is established in pipeline body 1 and is located economizer 7 below, and spaced apart in order to form whereabouts passageway 6 between the internal face of air preheater 8 and pipeline body 1, grid 2 is established between economizer 7 and air preheater 8.

The utility model discloses boiler system has the utility model discloses advantage and technical effect that the pipeline subassembly brought are simultaneously because the grid is established the economizer with between the air preheater, and the air preheater with spaced apart in order to form the whereabouts passageway between the internal face of pipeline body, therefore the material such as cubic hard ash of grid interception is discharged from the passageway that falls, and can not block up around the air preheater.

In some embodiments, the boiler system further comprises an ash hopper 9 and an ash discharge valve, the ash hopper 9 is disposed in the piping body 1 downstream of the drop opening 3, the ash hopper 9 has an ash inlet 91, an ash outlet 92 and an ash outlet channel 94, the ash inlet 91 is communicated with the drop opening 3, the ash outlet 92 is disposed below the ash inlet 91, the cross-sectional area of the ash outlet 92 is smaller than the cross-sectional area of the ash inlet 91, the ash outlet 92 is communicated with the ash outlet channel 94, and the ash discharge valve is disposed on the ash outlet channel 94.

As shown in fig. 2, ash inlet 91 is arranged at the top of ash storage bucket 9, ash outlet 92 is arranged at the bottom of ash storage bucket 9, ash storage bucket 9 comprises a first side wall and a second side wall which are oppositely arranged in the front-back direction, the first side wall extends along the vertical direction, the second side wall comprises a first section 93 and a second section which are sequentially connected from top to bottom, first section 93 is obliquely arranged towards the first side wall along the direction from top to bottom, the second section extends along the vertical direction, ash outlet 92 is formed between the joint of the first section and the second section and the first side wall, and ash outlet channel 94 is formed between the second section and the first side wall.

The lumpy hard ash in the dropping passage 6 is introduced into the ash storage hopper 9 from the ash inlet 91 and then moves toward the ash outlet 92 under the guide of the first section 93, and when the valve is closed, the lumpy hard ash is stored in the ash storage hopper 9, and when the valve is opened, the lumpy hard ash is discharged from the ash discharge passage 94.

The ash storage hopper is arranged to collect the blocky hard ash.

Wherein, the ash storage bucket is not only limited to set up in the pipeline body, in other words, the ash storage bucket is not only limited to set up in falling the passageway, and in other implementations, the ash storage bucket is located the export below of pipeline body, and cubic hard ash falls into in the ash storage bucket after falling the passageway and discharging from the pipeline body from the whereabouts.

In some embodiments, the mesh opening size of the grid mesh is between one third and one half of the pipe diameter of the air preheater.

In some embodiments, the pipe body is provided with a viewing port, and the viewing port is positioned between the economizer and the air preheater.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used only for component differentiation, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (10)

1. A pipe assembly, comprising:

a duct body (1), at least a portion of the duct body (1) extending in an up-down direction;

a grid (2), wherein the grid (2) is arranged in at least one part of the pipeline body (1), at least one part of the grid (2) extends along the direction from top to bottom and is obliquely arranged towards the inner circumferential surface of the pipeline body (1), and the bottom end of the grid (2) is spaced from the inner circumferential surface of the pipeline body (1) to form a falling opening (3).

2. A pipe assembly according to claim 1, characterized in that at least a part of the grating (2) is angled at an angle of 20 ° -43 ° to the extension direction of the pipe body (1).

3. A pipe assembly according to claim 2, wherein the grating (2) comprises a horizontal section (21) and an inclined section (22), the top end of the inclined section (22) being connected to the edge of the horizontal section (21), the inclined section (22) extending in an up-down direction and being arranged obliquely towards the inner circumferential surface of the pipe body (1), the falling opening (3) being formed between the bottom end of the inclined section (22) and the inner circumferential surface of the pipe body (1).

4. A pipe assembly according to claim 3, wherein said inclined sections (22) are at least two and at least two of said inclined sections (22) are arranged symmetrically centered on said horizontal section (21); or the peripheral contour of the cross section of the inclined section (22) is circular.

5. The piping component of claim 4, further comprising:

a first mounting part (4), the first mounting part (4) being connected with the pipe body (1), the first mounting part (4) being connected with at least one of a top end of the inclined section (22) and an edge of the horizontal section (21);

a second mounting element (5), the second mounting element (5) being connected to the pipe body (1), the second mounting element (5) being connected to the bottom end of the inclined section (22).

6. A pipe assembly according to claim 3, wherein the pipe body (1) comprises a narrow diameter section (11), a flared section (12) and a wide diameter section (13) which are connected in sequence from top to bottom, the caliber size of the narrow diameter section (11) is smaller than the caliber size of the wide diameter section (13), at least part of the inclined section (22) is located in the flared section (12), and the drop opening (3) is formed between the bottom end of the inclined section (22) and at least one of the inner peripheral surface of the flared section (12), the inner peripheral surface of the wide diameter section (13) and the connection of the flared section (12) and the wide diameter section (13).

7. The pipe assembly according to claim 6, wherein the cross-sectional area of the flared section (12) increases gradually in the direction from top to bottom, at least part of the inner circumferential surface of the flared section (12) and the length direction of the inclined section (22) are parallel, and the distance between at least part of the inner circumferential surface of the flared section (12) and the corresponding inclined section (22) is 350mm to 450mm.

8. A pipe assembly according to any one of claims 1-7, characterised in that the pipe body (1) has a drop channel (6) therein, the top end of the drop channel (6) communicating with the drop opening (3), the drop channel (6) having a dimension in the radial direction of the pipe body (1) of 300-400 mm.

9. A boiler system, comprising:

a flue, the flue being a duct assembly according to any one of claims 1-8;

the coal economizer (7) is arranged in the pipeline body (1);

the air preheater (8) is arranged in the pipeline body (1) and located below the coal economizer (7), the air preheater (8) and the inner wall surface of the pipeline body (1) are spaced to form a falling channel (6), and the grating (2) is arranged between the coal economizer (7) and the air preheater (8).

10. The boiler system according to claim 9, further comprising an ash hopper (9) and an ash discharge valve, wherein the ash hopper (9) is provided in the duct body (1) downstream of the drop opening (3), the ash hopper (9) has an ash inlet (91), an ash outlet (92) and an ash passage (94), the ash inlet (91) communicates with the drop opening (3), the ash outlet (92) is provided below the ash inlet (91), the cross-sectional area of the ash outlet (92) is smaller than the cross-sectional area of the ash inlet (91), the ash outlet (92) communicates with the ash passage (94), and the ash discharge valve is provided on the ash passage (94).

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