阅读说明：本技术 一种新型汇集集箱结构 (Novel collect collection case structure ) 是由 李秋石 刘金波 常小猛 徐祥久 于 2020-05-09 设计创作，主要内容包括：一种新型汇集集箱结构,本发明涉及一种集箱结构,本发明为解决传筒的汇集集箱采用外置式螺钉固定方式不理想的问题,本发明包括外套筒组件和内套筒,内套筒插装在外套筒组件内,所述一种新型汇集集箱结构还包括多个固定螺钉,多个固定螺钉沿圆周方向设置在内套筒的外侧,内套筒的外壁通过固定螺钉与外套筒组件的内壁连接。改变传统的外置式螺钉顶紧固定改为内置式螺钉固定,通过采用内置式螺钉顶紧内套筒,避免了因筒身钻孔、攻丝导致丝锥极易折断的问题。本发明属于锅炉技术领域。(The invention relates to a novel collecting box structure, in particular to a collecting box structure, which aims to solve the problem that an external screw fixing mode is not ideal when a collecting box of a transmission cylinder is adopted. The traditional external screw jacking fixation is changed into built-in screw fixation, and the problem that the screw tap is easy to break due to drilling and tapping of the cylinder body is solved by jacking the inner sleeve with the built-in screw. The invention belongs to the technical field of boilers.)

1. The utility model provides a novel collect a case structure, a novel collect a case structure and include outer sleeve subassembly (1) and inner skleeve (2), inner skleeve (2) cartridge is in outer sleeve subassembly (1), its characterized in that: the novel collection box structure further comprises a plurality of fixing screws (3), the plurality of fixing screws (3) are arranged on the outer side of the inner sleeve (2) along the circumferential direction, and the outer wall of the inner sleeve (2) is connected with the inner wall of the outer sleeve assembly (1) through the fixing screws (3).

2. A novel collection header structure as claimed in claim 1, wherein: the outer sleeve assembly comprises a transition pipe (1-1), a barrel body (1-2), a hemispherical end cover (1-3) and a plurality of pipe joint connecting pipes (1-4), wherein the transition pipe (1-1), the barrel body (1-2) and the hemispherical end cover (1-3) are sequentially connected from left to right end to end, and the plurality of pipe joint connecting pipes (1-4) are uniformly distributed on the outer wall of the barrel body (1-2) along the circumferential direction of the barrel body (1-2).

3. A novel collection header structure as claimed in claim 1, wherein: the transition pipe (1-1), the cylinder body (1-2) and the hemispherical end cover (1-3) are all connected in a welding manner.

4. A novel collection header structure as claimed in claim 1, wherein: the novel collecting box structure further comprises an inner sleeve end cover (4), one end of the inner sleeve (2) is connected with the transition pipe (1-1), and the inner sleeve end cover (4) is installed at the other end of the inner sleeve (2).

5. A novel collection header structure as claimed in claim 1 or 3, wherein: the outer wall of the inner sleeve (2) is provided with a plurality of threaded holes matched with the fixing screws (3), one ends of the fixing screws (3) are connected with the threaded holes, and the other ends of the fixing screws (3) are tightly fixed with the inner wall of the barrel body (1-2).

Technical Field

The invention relates to a header structure, in particular to a novel collecting header structure, and belongs to the technical field of boilers.

Background

The collection header is an important component of our company in super supercritical power station boilers. According to different arrangement positions, the device is divided into a wall-wrapping inlet, a ceiling inlet, furnace distribution, a flame folding angle, a horizontal flue collecting box, a primary mixer and the like. The method mainly plays a role in adjusting parameters of steam and water in the operation process of the boiler.

The basic structure of the collecting tank consists of main parts such as a cylinder body (an outer sleeve), an inner sleeve, a transition pipe, a hemispherical end cover, a fixing screw, a pipe joint connecting pipe and the like. Wherein 1000 holes are drilled on the inner sleeve, and the function of the inner sleeve is mainly to carry out secondary distribution of parameters on the steam-water mixture. The fixing screw is used for fixing the inner sleeve for protection and the desuperheater spray rod on the barrel body. Traditional screw fixation mode is exactly through the method of drilling the tapping on the stack shell, with two sets of screws tops on the inner skleeve body, passes inner skleeve welded fastening, and this kind of screw fixed knot structure has following problem to be difficult to solve:

1. the cylinder body of the collecting box is a thick-wall large-caliber pipe, the drilling and tapping difficulty of screw holes is great, and particularly, a screw tap used in tapping is easy to break in the thick-wall cylinder body;

2. whether the screw tightly jacks the inner sleeve when being screwed in is unknown, and the product quality is difficult to ensure;

3. the welding quality of the fillet weld of the screw is difficult to ensure;

4. the collecting box is collected to this structure needs to carry out hydrostatic test, and the degree of difficulty is big, and the process is many, and the cycle is long, especially falls into the unable clearance of gas cutting surplus slag behind the water pressure between the interior outer sleeve.

Disclosure of Invention

The invention provides a novel collecting header structure for solving the problem that an external screw fixing mode adopted by a collecting header of a transmission cylinder is not ideal.

The technical scheme adopted by the invention for solving the problems is as follows:

the novel collecting box structure comprises an outer sleeve assembly and an inner sleeve, wherein the inner sleeve is inserted into the outer sleeve assembly, the novel collecting box structure further comprises a plurality of fixing screws, the plurality of fixing screws are arranged on the outer side of the inner sleeve along the circumferential direction, and the outer wall of the inner sleeve is connected with the inner wall of the outer sleeve assembly through the fixing screws.

Further, outer sleeve subassembly includes transition pipe, stack shell, hemisphere end cover and a plurality of coupling takeover, transition pipe, stack shell and hemisphere end cover connect gradually from left to right end to end, and a plurality of couplings are taken over and are installed on the outer wall of stack shell along the circumferencial direction equipartition of stack shell.

Further, the transition pipe, the cylinder body and the hemispherical end cover are all connected in a welding mode.

Further, a novel collect collection case structure still includes the inner skleeve end cover, the one end and the transition union coupling of inner skleeve, the inner skleeve end cover is installed to the other end of inner skleeve.

Furthermore, the outer wall of inner skleeve is equipped with a plurality of and set screw complex screw holes, and set screw's one end is connected with the screw hole, and set screw's the other end is tightly fixed with the inner wall top of stack shell.

The invention has the beneficial effects that:

1. according to the structure of the transition pipe, the cylinder body, the inner sleeve and the hemispherical end cover, the assembling sequence is adjusted, and the problem of high assembling difficulty is solved;

2. the traditional external screw jacking fixation is changed into built-in screw fixation, and the built-in screw is adopted to jack the inner sleeve, so that the problem that the screw tap is easy to break due to drilling and tapping of the sleeve body is avoided;

3. the problem of water leakage during screw welding is solved, and the repair cost is saved by about thirty-thousand yuan each year.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic illustration of exemplary components of the present invention;

FIG. 3 is a schematic view of an assembly sequence 1;

FIG. 4 is a schematic view of an assembly sequence 2;

FIG. 5 is a schematic view of an assembly sequence 3;

FIG. 6 is a schematic view of an assembly sequence 4;

FIG. 7 is a schematic view of an assembly sequence 5;

fig. 8 is a schematic view of the assembly sequence 6.

In the figure, 1-outer sleeve component, 2-inner sleeve, 3-fixing screw, 4-inner sleeve end cover, transition pipe 1-1, 1-2-barrel body, 1-3-hemispherical end cover and 1-4-pipe joint connecting pipe.

Detailed Description