CN110822404A

CN110822404A - U-shaped platen superheater

Info

Publication number: CN110822404A
Application number: CN201911259648.XA
Authority: CN
Inventors: 李德民; 吴安敏
Original assignee: Jiangsu Zhongke Heavy Industry Co Ltd
Current assignee: Jiangsu Zhongke Heavy Industry Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-02-21

Abstract

The invention discloses a U-shaped screen type superheater, which comprises a water inlet main pipe and a water discharge main pipe, wherein the water inlet main pipe and the water discharge main pipe are arranged in parallel from left to right, six groups of U-shaped superheater tubes are uniformly welded between the water inlet main pipe and the water discharge main pipe, and six groups of U-shaped superheat tubes are arranged between the water inlet main pipe and the water discharge main pipe in a layered manner, and one ends of the six groups of U-shaped superheat tubes close to the water inlet main pipe and the water discharge main pipe are provided with a first limiting bracket, the invention realizes the adjustment of the position between the first positioning plate and the second positioning plate by adjusting the position of the compression nut on the limiting screw rod, thereby realizing the adjustment of the distance between the tube panels fixed on the arched bracket, facilitating the adjustment in the later installation process, leading the tube panels to be in a vertical state, meanwhile, the elastic buffering effect of the buffering elastic piece is utilized, and the rigid damage caused by the fact that the distance between the tube panels cannot be adjusted in the hoisting process can be reduced.

Description

U-shaped platen superheater

Technical Field

The invention relates to the technical field of superheaters in boiler systems, in particular to a U-shaped platen superheater.

Background

The platen superheater is also commonly called a semi-radiation superheater and refers to a heating surface which is arranged at the upper part of a hearth or a smoke window at the outlet of the hearth and is used for receiving direct radiation heat in the furnace and absorbing convection heat of smoke. A large distance is kept between two adjacent screens of the screen type superheater, so that the effects of reducing the temperature of the flue gas at the outlet of the hearth and slag condensation can be achieved, and slag bonding on the rear heating surface can be prevented. Generally, the existing platen superheater is mostly combined horizontally, so that the steel consumption of a combined support is saved, and the stability is improved.

Present U-shaped platen superheater is in order to keep the horizontal interval between the tube panel, increase the fixity, often utilize a convex bow-shaped pipe to be in the same place every two tube panel overlap joints between the tube panel, must examine the position of bow-shaped pipe during the combination, convex size etc. comparatively loaded down with trivial details, and the position is fixed the setting, and the later stage can't carry out the adjustment of distance between the tube panel, lacks the buffer measure simultaneously, causes the damage phenomenon of rigidity because of the collision easily at the in-process of hoist and mount.

Disclosure of Invention

The invention aims to provide a U-shaped screen type superheater, which comprises a water inlet main pipe and a water outlet main pipe, wherein the water inlet main pipe and the water outlet main pipe are arranged in parallel from left to right, six groups of U-shaped superheat pipes are uniformly welded between the water inlet main pipe and the water outlet main pipe, the six groups of U-shaped superheat pipes are arranged between the water inlet main pipe and the water outlet main pipe in a layered manner, one ends, close to the water inlet main pipe and the water outlet main pipe, of the six groups of U-shaped superheat pipes are provided with a first limiting bracket, one ends, far away from the water inlet main pipe and the water outlet main pipe, of the six groups of U-shaped superheat pipes are provided with a second limiting bracket, the second limiting bracket comprises a first three-layer positioning plate and a second three-layer positioning plate, the first positioning plate and the second positioning plate are arranged in a staggered and parallel manner, arch supports matched with the U-shaped superheat pipes, and a limit screw penetrates through the first three-layer positioning plate and the second three-layer positioning plate, compression nuts are uniformly installed on the outer wall of the limit screw and are respectively arranged at the top of the upper arched support and the bottom of the lower arched support, a buffering elastic piece is vertically installed between the first positioning plate and the second positioning plate, and the buffering elastic piece is sleeved on the outer wall of the limit screw.

Preferably, the first limiting support and the second limiting support are the same in structure, the first limiting support is of a two-side structure, the second limiting support is of a three-layer structure, and the first limiting support and the second limiting support are arranged in a staggered mode.

Preferably, the top of the first positioning plate, the top of the second positioning plate and the top of the arched support are both provided with fixed jacks matched with the limiting screws, and the fixed jacks and the limiting screws are in clearance fit.

Preferably, the arched support is an isosceles trapezoid support formed by bending a stainless steel plate, arc clamping plates matched with the U-shaped superheater tubes are welded at two ends of the arched support, and the inner diameter of each arc clamping plate is the same as the outer diameter of each U-shaped superheater tube.

Preferably, the limiting screw rod is connected with the compression nut through mutually matched threads, and the length of the compression nut is smaller than that of the water inlet main pipe and the water outlet main pipe.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the position between the first positioning plate and the second positioning plate is adjusted by adjusting the position of the compression nut on the limiting screw rod, so that the distance between tube panels fixed on the arched support is adjusted, the adjustment in the later installation process is facilitated, the tube panels are in a vertical state, and meanwhile, the rigid damage caused by the fact that the distance between the tube panels cannot be adjusted in the hoisting process can be reduced by utilizing the elastic buffering effect of the buffering elastic piece, and the installation difficulty is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a U-platen superheater in accordance with the present invention;

FIG. 2 is a schematic structural view of a second limit bracket of the present invention;

FIG. 3 is an enlarged view of the portion A of the second limit bracket of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a water inlet header pipe, 2-a water outlet header pipe, 3-a U-shaped superheat tube, 4-a first limiting support, 5-a second limiting support, 51-a first positioning plate, 52-a second positioning plate, 53-an arched support, 54-a limiting screw rod, 55-a compression nut and 56-a buffering elastic piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the U-panel superheater according to the exemplary embodiment of the present invention includes a main water inlet pipe 1 and a main water outlet pipe 2, and the main water inlet pipe 1 and the main water outlet pipe 2 are arranged in parallel from left to right. Six groups of U-shaped superheat tubes 3 are uniformly welded between the water inlet main pipe 1 and the drainage main pipe 2, and the six groups of U-shaped superheat tubes 3 are arranged between the water inlet main pipe 1 and the drainage main pipe 2 in a layered mode.

Referring to fig. 1, a first limiting bracket 4 is installed at one end of each of the six groups of U-shaped superheat tubes 3 close to the water inlet main pipe 1 and the water outlet main pipe 2, and a second limiting bracket 5 is installed at one end of each of the six groups of U-shaped superheat tubes 3 far away from the water inlet main pipe 1 and the water outlet main pipe 2.

The second limiting bracket 5 comprises a first three-layer positioning plate 51 and a second three-layer positioning plate 52, and the first positioning plate 51 and the second positioning plate 52 are arranged in parallel in a staggered mode.

The top of the first positioning plate 51 and the bottom of the second positioning plate 52 are both welded with an arched support 53 matched with the U-shaped superheater tube 3, a limit screw 54 is vertically installed between the first three-layer positioning plate 51 and the second positioning plate 52, and the limit screw 54 penetrates through the first three-layer positioning plate 51 and the second positioning plate 52.

Gland nuts 55 are uniformly installed on the outer wall of the limit screw 54, the gland nuts 55 are respectively arranged at the top of the upper arched support 53 and the bottom of the lower arched support 53, a buffering elastic piece 56 is vertically installed between the first positioning plate 51 and the second positioning plate 52, and the buffering elastic piece 56 is sleeved on the outer wall of the limit screw 54.

Wherein, preferably, spacing support one 4 is the same with spacing support two 5's structure, and is both the both sides structure, makes things convenient for the change of spacing support one 4 and spacing support two 5's mutual position, is favorable to the maintenance adjustment in later stage. And the first limiting support 4 and the second limiting support 5 are of three-layer structures, and the first limiting support 4 and the second limiting support 5 are arranged in a staggered mode, so that the first limiting support 4 and the second limiting support 5 can connect six layers of U-shaped superheat tubes 3 into a whole.

Preferably, the top of the first positioning plate 51, the top of the second positioning plate 52 and the top of the arched bracket 53 are both provided with a fixing insertion hole matched with the limit screw 54, and the fixing insertion hole and the limit screw 54 are in clearance fit, so that the limit screw 54 can be conveniently positioned and installed.

Wherein, the isosceles trapezoid support of arched support 53 for the corrosion resistant plate shaping of buckling, and the both ends of arched support 53 all weld have with U type superheater pipe 3 matched with arc cardboard, the internal diameter of arc cardboard is the same with U type superheater pipe 3's external diameter, can be with arched support 53 joint at U type superheater pipe 3's outer wall.

The limit screw 54 is connected with the compression nut 55 through mutually matched threads, and the position of the compression nut 55 on the limit screw 54 is adjusted through rotation.

In order to reduce the influence of the compression nut 55 on the installation positions of the water intake manifold 1 and the drain manifold 2, the length of the compression nut 55 is smaller than the length of the water intake manifold 1 and the drain manifold 2.

Referring to fig. 1, in the installation process, two layers of first limiting supports 4 and three layers of second limiting supports 5 are installed at two ends of the U-shaped superheater tube 3 in a staggered mode, so that six layers 6 are connected into a whole under the clamping action of the first limiting supports 4 and the second limiting supports 5, and the positions of the first positioning plates 51 and the second positioning plates 52 are adjusted by adjusting the positions of the first limiting supports 4 and the second limiting supports 5 on the limiting screws 54, so that the distance between the tube panels fixed on the arched supports 53 is adjusted.

Wherein, need keep six layers of U type superheat tubes 3 all in the horizontality in the installation, make things convenient for the regulation in the installation of later stage, make the tube panel be in the vertical state, utilize the elastic buffer effect of buffering elastic component 56 simultaneously, can reduce the unable adjustment of distance between the hoist and mount in-process tube panel and the rigidity damage that causes, reduce the installation degree of difficulty.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.

Claims

U-shaped platen superheater, including water inlet manifold (1) and drain main (2), and parallel arrangement about water inlet manifold (1) and drain main (2), its characterized in that:

six groups of U-shaped superheat pipes (3) are uniformly welded between the water inlet main pipe (1) and the water drainage main pipe (2), and the six groups of U-shaped superheat pipes (3) are arranged between the water inlet main pipe (1) and the water drainage main pipe (2) in a layered mode;

one end of the six groups of U-shaped superheat tubes (3) close to the water inlet main pipe (1) and the water outlet main pipe (2) is provided with a first limiting bracket (4);

one end, away from the water inlet main pipe (1) and the water outlet main pipe (2), of the six groups of U-shaped superheat pipes (3) is provided with a second limiting support (5), the second limiting support (5) comprises a first three-layer positioning plate (51) and a second three-layer positioning plate (52), and the first positioning plate (51) and the second positioning plate (52) are arranged in parallel in a staggered mode;

the top of the first positioning plate (51) and the bottom of the second positioning plate (52) are both welded with an arched support (53) matched with the U-shaped superheater tube (3), a limiting screw rod (54) is vertically arranged between the first positioning plate (51) and the second positioning plate (52) in the three layers, and the limiting screw rod (54) penetrates through the first positioning plate (51) and the second positioning plate (52) in the three layers;

gland nuts (55) are uniformly installed on the outer wall of the limiting screw (54), the gland nuts (55) are respectively arranged at the top of the upper side arch support (53) and the bottom of the lower side arch support (53), a buffering elastic part (56) is vertically installed between the first positioning plate (51) and the second positioning plate (52), and the buffering elastic part (56) is sleeved on the outer wall of the limiting screw (54).
2. The U-platen superheater according to claim 1, wherein: the first limiting support (4) and the second limiting support (5) are identical in structure and are of two-side structures and three-layer structures.
3. The U-platen superheater according to claim 1, wherein: and the top parts of the first positioning plate (51), the second positioning plate (52) and the arched bracket (53) are respectively provided with a fixing insertion hole matched with the limiting screw rod (54).
4. The U-platen superheater according to claim 1, wherein: the fixed insertion holes are in clearance fit with the limiting screw rods (54).
5. The U-platen superheater according to claim 1, wherein: the arc-shaped support (53) is an isosceles trapezoid support formed by bending a stainless steel plate, arc-shaped clamping plates matched with the U-shaped superheat pipe (3) are welded at two ends of the arc-shaped support (53), and the inner diameter of each arc-shaped clamping plate is the same as the outer diameter of the U-shaped superheat pipe (3).
6. The U-platen superheater according to claim 1, wherein: the limiting screw rod (54) is connected with the compression nut (55) through mutually matched threads, and the length of the compression nut (55) is smaller than that of the water inlet main pipe (1) and the water discharge main pipe (2).
7. The U-platen superheater according to any one of claims 1-6, wherein: the first limiting support (4) and the second limiting support (5) are arranged in a staggered mode.