CN210291824U

CN210291824U - Heating surface structure of boiler with reheating circulating fluidized bed

Info

Publication number: CN210291824U
Application number: CN201921273742.6U
Authority: CN
Inventors: 余广胜; 夏洪刚; 郭龙
Original assignee: Datang Yuncheng Power Generation Co Ltd
Current assignee: Datang Yuncheng Power Generation Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-10
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a take reheat circulating fluidized bed boiler's heated surface structure, including panel frame and steam discharge end, the middle part fixed mounting of panel frame has the shunt tubes, and the junction fixedly connected with business turn over end of panel frame and shunt tubes to the inside of panel frame is provided with the rivers pipe, be fixed with confluent end and reposition of redundant personnel end on rivers pipe and the shunt tubes respectively, and the inside of reposition of redundant personnel end and shunt tubes link up each other, the steam discharge end is installed and is all installed on the outer wall of rivers pipe with the end of intaking, and is provided with the check valve on the inner wall of rivers pipe to the check valve is located the steam discharge end and is intake between the junction of end and rivers pipe. This take reheat circulating fluidized bed boiler's heating surface structure can improve the structure and to the absorption utilization efficiency of external sensible heat energy, when single local damage appears in its inside coiled pipe simultaneously, is convenient for it to carry out the dismantlement maintenance change that uses.

Description

Heating surface structure of boiler with reheating circulating fluidized bed

Technical Field

The utility model relates to a circulating fluidized bed boiler technical field specifically is take reheat circulating fluidized bed boiler's heating surface structure.

Background

With the social progress of China, the circulating fluidized bed boiler is developed rapidly in China, the circulating fluidized bed boiler has the characteristics of energy conservation, stable use and high fuel utilization rate when in use, and the heating surface structure of the circulating fluidized bed boiler has the effect of great weight when in work.

However, the heating surface structure of the existing circulating fluidized bed boiler has the following problems in use:

1. when the heat pump is used, the utilization rate of heat energy of external sensible heat is not high, the dissipation and waste of external heat energy are easy to occur, and the use efficiency of the heat energy is influenced;

2. when the internal coil pipe works for a long time, the local damage of the internal coil pipe structure is easy to occur, the maintenance and the replacement of a single individual coil pipe are inconvenient, and the normal use of the single individual coil pipe is influenced.

In order to solve the above problems, innovative design based on the heating surface structure of the original circulating fluidized bed boiler is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take reheating circulating fluidized bed boiler's heating surface structure to solve above-mentioned background art and propose current circulating fluidized bed boiler's heating surface structure when it uses, the heat utilization rate of external sensible heat is not high, the scattering and disappearing waste of the external heating energy appears easily, influences its heat energy availability factor, long-time during operation, the local damage of inside coiled pipe structure easily appears, it is inconvenient to the maintenance change operation of single solitary coiled pipe, influence its problem of normal use.

In order to achieve the above object, the utility model provides a following technical scheme: take reheat circulating fluidized bed boiler's heated surface structure, including panel frame and steam discharge end, the middle part fixed mounting of panel frame has the shunt tubes, and the junction fixedly connected with business turn over end of panel frame and shunt tubes to the inside of panel frame is provided with the rivers pipe, is fixed with the cushion between rivers pipe and the panel frame moreover, be fixed with converge end and reposition of redundant personnel end on rivers pipe and the shunt tubes respectively, and the inside of reposition of redundant personnel end and shunt tubes link up each other, and install the coiled pipe between converge end and the reposition of redundant personnel end, the coiled pipe all is provided with the connecting pipe with the junction of converge end and reposition of redundant personnel end simultaneously, the steam discharge end is installed and is all installed on the outer wall of rivers pipe with the end of intaking, and is provided with the check valve on the inner wall of rivers pipe to the check valve is located steam discharge end and intake between the junction of end and rivers pipe.

Preferably, the shunt pipe is in a cross-shaped structure, and the shunt pipe is communicated with the inlet end and the outlet end.

Preferably, the side section of the water flow pipe is arranged in an inverted n-shaped structure, and a space is reserved between the inner wall of the water flow pipe and the coiled pipe.

Preferably, the coiled pipes are arranged in 4 groups inside the water flow pipes, and the water flow pipes in each group are distributed in a relative staggered manner.

Preferably, the steam discharge end and the water inlet end are both arranged in the water flow pipe in a penetrating manner, the steam discharge end is positioned right above the water inlet end, and the steam discharge end and the water inlet end are positioned above the liquid level in the water flow pipe.

Preferably, the connecting pipe is connected with the outer wall of the end part of the coiled pipe in a sliding mode, and the connecting pipe, the converging end and the diverging end are arranged to be internally communicated and connected through threads to form a dismounting and mounting structure.

Compared with the prior art, the beneficial effects of the utility model are that: the heating surface structure of the boiler with the reheating circulating fluidized bed can improve the absorption and utilization efficiency of the structure to external sensible heat and heat energy, and is convenient to use, disassemble, maintain and replace when a single local damage occurs to the coiled pipe inside the structure;

1. the water flow pipe directly recycles the external dissipated heat energy when the coiled pipe works only through the water flow pipe, the water source in the coiled pipe is heated, and the generated steam improves heat supply for the use of a boiler or performs guide utilization of the steam, so that the heat energy utilization rate is improved;

2. under the threaded connection effect of connecting pipe and collection end and reposition of redundant personnel end, make things convenient for the connecting pipe and converge the end and the direct relative motion of reposition of redundant personnel end, sliding connection between connecting pipe and the coiled pipe simultaneously for the coiled pipe is convenient for its dismantlement change when using, and it is convenient to damage the maintenance at single local.

Drawings

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

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of the mounting structure of the check valve of the present invention;

fig. 4 is a schematic view of the installation structure of the connecting pipe of the present invention.

In the figure: 1. a panel outer frame; 2. a shunt tube; 3. an inlet and an outlet; 4. a water flow pipe; 5. cushion blocks; 6. a sink end; 7. a shunting end; 8. a serpentine tube; 9. a steam discharge end; 10. a water inlet end; 11. a one-way valve; 12. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a heated surface structure of a boiler with a reheating circulating fluidized bed comprises a panel outer frame 1, a shunt pipe 2, an inlet and outlet end 3, a water flow pipe 4, a cushion block 5, a confluence end 6, a diversion end 7, a coiled pipe 8, a steam discharge end 9, a water inlet end 10, a one-way valve 11 and a connecting pipe 12, wherein the shunt pipe 2 is fixedly arranged in the middle of the panel outer frame 1, the inlet and outlet end 3 is fixedly connected with the joint of the panel outer frame 1 and the shunt pipe 2, the water flow pipe 4 is arranged in the panel outer frame 1, the cushion block 5 is fixed between the water flow pipe 4 and the panel outer frame 1, the confluence end 6 and the diversion end 7 are respectively fixed on the water flow pipe 4 and the shunt pipe 2, the diversion end 7 is communicated with the inside of the shunt pipe 2, the coiled pipe 8 is arranged between the confluence end 6 and the diversion end 7, the connecting pipe 12 is arranged at the joint of the coiled pipe 8, the confluence end 6 and the diversion end 7, the steam, and a check valve 11 is arranged on the inner wall of the water flow pipe 4, and the check valve 11 is positioned between the steam discharge end 9 and the connection part of the water inlet end 10 and the water flow pipe 4.

Shunt tubes 2 sets up to "ten" font structure, and shunt tubes 2 link up the setting with business turn over end 3, conveniently carries out shunt tubes 2's installation and use, carries out the normal use of coiled pipe 8 through shunt tubes 2.

The side section of the water flow pipe 4 is arranged to be an inverted n-shaped structure, and a space is reserved between the inner wall of the water flow pipe 4 and the coiled pipe 8, so that the heating performance of the water flow pipe 4 is improved, and the sensible heat outside is sucked to collect and utilize heat energy.

The serpentine pipe 8 is arranged into 4 groups in the water flow pipe 4, and the water flow pipes 4 of each group are distributed in a staggered mode from top to bottom, so that the serpentine pipe 8 is convenient to install and use, and the heat energy utilization rate is improved.

Steam discharge end 9 and the end 10 of intaking all link up the setting in the inside of rivers pipe 4, and steam discharge end 9 is located the end 10 directly over of intaking to steam discharge end 9 and the end 10 of intaking are located the inside liquid level of rivers pipe 4, make things convenient for the work of steam to discharge, avoid the expansion problem that converges of steam to take place.

Connecting pipe 12 and the tip outer wall sliding connection of coiled pipe 8, and connecting pipe 12 and converge end 6 and reposition of redundant personnel end 7 and set up to inside threaded connection dismantlement mounting structure who link up, conveniently maintain it when coiled pipe 8 local damage and change.

The working principle is as follows: when the heated surface structure of the boiler with the reheating circulating fluidized bed is used, firstly, according to the graph 1-2, when the heated surface structure works, the inlet end and the outlet end 3 are connected with an external reheater, the normal use of the heated surface structure is carried out under the combined use action of the confluence end 6, the diversion end 7 and the coiled pipe 8, as shown in the graph 2, the coiled pipe 8 is distributed in a relative staggered way, the utilization efficiency of the coiled pipe on energy is improved, and the external heat energy generated when the coiled pipe 8 is used can heat the water in the water flow pipe 4, so that the water in the water flow pipe 4 is converted into steam, and the steam is discharged under the action of the steam discharge end 9, and the collection and use of the external sensible heat energy of the steam are achieved;

as shown in fig. 3-4, the arrangement of the steam discharge end 9, the water inlet end 10 and the check valve 11 prevents steam from collecting in the water flow pipe 4 and affecting the normal operation and use of the water flow pipe 4, and meanwhile, as shown in fig. 4, when the coiled pipe 8 is damaged in single use, the connecting pipe 12 is rotated to enable the connecting pipe 12 to be in threaded connection with the confluence end 6 and the diversion end 7, so that the function of the connecting pipe 12 is facilitated to facilitate the maintenance and replacement operation after the single coiled pipe 8 is disassembled.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Take reheat circulating fluidized bed boiler's heating surface structure, including panel frame (1) and steam discharge end (9), its characterized in that: the middle part of the panel outer frame (1) is fixedly provided with a shunt pipe (2), the joint of the panel outer frame (1) and the shunt pipe (2) is fixedly connected with an inlet end and an outlet end (3), a water flow pipe (4) is arranged in the panel outer frame (1), a cushion block (5) is fixed between the water flow pipe (4) and the panel outer frame (1), a converging end (6) and a diverging end (7) are respectively fixed on the water flow pipe (4) and the shunt pipe (2), the diverging end (7) is communicated with the inside of the shunt pipe (2), a coiled pipe (8) is arranged between the converging end (6) and the diverging end (7), meanwhile, the joints of the coiled pipe (8) and the converging end (6) and the diverging end (7) are respectively provided with a connecting pipe (12), a steam discharge end (9) is arranged on the outer wall of the water flow pipe (4) and a water inlet end (10) is arranged, and the inner wall of the water flow pipe (4) is provided with a one-way valve (11), and the one-way valve (11) is positioned between the steam discharge end (9) and the connection part of the water inlet end (10) and the water flow pipe (4).

2. The heated surface structure of a boiler with a reheat circulating fluidized bed according to claim 1, wherein: the shunt pipe (2) is arranged in a cross-shaped structure, and the shunt pipe (2) is communicated with the inlet and outlet end (3).

3. The heated surface structure of a boiler with a reheat circulating fluidized bed according to claim 1, wherein: the side section of the water flow pipe (4) is arranged to be an inverted n-shaped structure, and a space is reserved between the inner wall of the water flow pipe (4) and the coiled pipe (8).

4. The heated surface structure of a boiler with a reheat circulating fluidized bed according to claim 1, wherein: the serpentine pipes (8) are arranged into 4 groups in the water flow pipes (4), and the water flow pipes (4) in each group are distributed in a staggered mode up and down.

5. The heated surface structure of a boiler with a reheat circulating fluidized bed according to claim 1, wherein: steam discharge end (9) and end (10) all link up the setting in the inside of rivers pipe (4) of intaking, and steam discharge end (9) are located the end (10) of intaking directly over to steam discharge end (9) and end (10) of intaking are located on the inside liquid level of rivers pipe (4).

6. The heated surface structure of a boiler with a reheat circulating fluidized bed according to claim 1, wherein: the connecting pipe (12) is connected with the outer wall of the end part of the coiled pipe (8) in a sliding mode, and the connecting pipe (12), the confluence end (6) and the diversion end (7) are arranged to be internally communicated and connected through threads to be disassembled and installed.