CN204693366U - A kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube - Google Patents
A kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube Download PDFInfo
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- CN204693366U CN204693366U CN201520324055.8U CN201520324055U CN204693366U CN 204693366 U CN204693366 U CN 204693366U CN 201520324055 U CN201520324055 U CN 201520324055U CN 204693366 U CN204693366 U CN 204693366U
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Abstract
The utility model discloses a kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube, comprise the following steps: each steam by-pass pipe be connected with steam entrance header on DG2060/17.6-II 1 type boiler and heart side is contiguous in the boiler saturated vapor fairlead thereof are all disconnected also brachymemma with the header stub (tube) in steam entrance header, each steam by-pass pipe after disconnecting also brachymemma by the first bend pipe and the second bend pipe again and saturated vapor fairlead adjacent thereto are interconnected, form improved steam flow, and Flat Lid is installed additional on the header stub (tube) disconnected, the first suspension and support and the second suspension and support is installed additional again on the first bend pipe and steam by-pass pipe.The utility model can prevent and treat the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube effectively.
Description
Technical field
The utility model belongs to the quick-fried leakage prevention and control field of station boiler pressure-containing member, relates to a kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube.
Background technology
The steam flow that DG2060/17.6-II 1 type boiler is relevant to steam entrance header is former to be designed to: enter steam entrance header from the saturated vapor of drum Base top contact through 20 saturated vapor fairleads, the steam of steam entrance header divides two-way to draw, one route 180 roof tube connected by fin forms, another route 6 steam by-pass pipe compositions, former design steam flow as shown in Figure 1.
The defect of this design is: due to be connected to the shunting action of 6 bypass pipes of steam entrance header and larger caliber adapter shunting cause near the instability in flow field, steam flow near part bypass pipe interface in roof tube may be less than the pipe away from bypass pipe interface largely, it is more weak that this just makes these pipes near bypass pipe interface be subject to managing the cooling capacity of interior medium, its tube wall temperature is higher compared with other pipes, and then cause the wall temperature temperature difference of itself and adjacent tube large (according to the actual temperature measurement result of scene to this model two boilers, design medium temperature is about to the steam of 360 DEG C, the back of the body fire facial canal wall temperature difference that some ceiling pipe near bypass pipe is adjacent ceiling pipe the most approximately reaches 150 DEG C), the large adjacent ceiling superheater tube of the temperature difference can produce very large heat expansion stress because of the constraint of fin therebetween, this heat expansion stress is along with the working conditions change such as start and stop of boiler is at the discontinuous position of some structures (fin joint, fin end etc.) produce fatigue damage, namely there is cracking leakage to a certain extent in damage accumulation.This model boiler of two, certain power plant to put into operation between about 7 years the roof tube cracking leakage about 20 times that generation altogether causes thus.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, provides a kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube, and this system can prevent and treat the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube effectively.
For achieving the above object, the system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube described in the utility model is made up of saturated vapor fairlead, the first bend pipe, the second bend pipe, steam by-pass pipe, the first suspension and support, the second suspension and support and Flat Lid, and saturated vapor fairlead is connected with steam by-pass pipe through the first bend pipe and the second bend pipe;
The pipe portion of described first suspension and support is connected on the horizontal straight section of the first bend pipe, and the root of the first suspension and support is connected on the steel channel beam above furnace roof;
The pipe portion of described second suspension and support is connected on steam by-pass pipe, and the root of the second suspension and support is connected on the suspention beam of front screen outlet header;
Flat Lid is connected on the header stub (tube) after steam entrance header disconnects.
The number of described first bend pipe is 6;
The number of described second bend pipe is 6;
The number of described first suspension and support is 6;
The number of described second suspension and support is 6.
Described first bend pipe is single bend pipe bending, and the material of the first bend pipe and steam by-pass pipe and saturated vapor fairlead, external diameter and wall thickness are identical.
Described second bend pipe is twin elbow, and the material of the second bend pipe and steam by-pass pipe and saturated vapor fairlead, external diameter and wall thickness are identical.
Described first suspension and support is that Dan Gang hangs.
Described second suspension and support is sliding support.
The utility model has following beneficial effect:
The system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube described in the utility model is in the process of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube, the saturated vapor that drum exports is divided into two-way through saturated vapor fairlead, one tunnel is input in steam entrance header, another road first bend pipe and the second bend pipe are directly inputted in steam by-pass pipe, thus the temperature difference between pipe that near steam entrance header bypass pipe interface, roof tube is excessive of avoiding the shunting action due to steam by-pass pipe to cause, and cause the problem of the cracking leakage of roof tube thus, structure is simple, easy to operate, cost is low.
Accompanying drawing explanation
Fig. 1 is DG2060/17.6-II 1 type boiler original design associated steam flow process;
The improved associated steam flow process of Fig. 2 the utility model; ;
Fig. 3 the utility model pipeline configuration transformation schematic diagram;
The form schematic diagram of the first bend pipe 4 in Fig. 4 the utility model;
The form schematic diagram of the second bend pipe 5 in Fig. 5 the utility model;
The installation site schematic diagram of the first suspension and support 6 in Fig. 6 the utility model;
The installation site schematic diagram of the second suspension and support 7 in Fig. 7 the utility model.
Wherein, 1 be saturated vapor fairlead, 2 be steam entrance header, 3 be Flat Lid for steam by-pass pipe, 4 be the first bend pipe, 5 be the second bend pipe, 6 be the first suspension and support, 7 is the second suspension and support, 8,9 be steel channel beam, 10 be suspention beam.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube described in the utility model is made up of saturated vapor fairlead 1, first bend pipe 4, second bend pipe 5, steam by-pass pipe 3, first suspension and support 6, second suspension and support 7 and Flat Lid 8, and saturated vapor fairlead 1 is connected with steam by-pass pipe 3 through the first bend pipe 4 and the second bend pipe 5; The pipe portion of the first suspension and support 6 is connected on the horizontal straight section of the first bend pipe 4, and the root of the first suspension and support 6 is connected on the steel channel beam 9 above furnace roof; The pipe portion of the second suspension and support 7 is connected on steam by-pass pipe 3, and the root of the second suspension and support 7 is connected on the suspention beam 10 of front screen outlet header; Flat Lid 8 is connected on the header stub (tube) after steam entrance header 2 disconnects.
It should be noted that, the number of the first bend pipe 4 is 6; The number of the second bend pipe 5 is 6; The number of the first suspension and support 6 is 6; The number of the second suspension and support 7 is 6; First bend pipe 4 is single bend pipe bending, and the material of the first bend pipe 4 and steam by-pass pipe 3 and saturated vapor fairlead 1, external diameter and wall thickness are identical; Second bend pipe 5 is twin elbow, and the material of the second bend pipe 5 and steam by-pass pipe 3 and saturated vapor fairlead 1, external diameter and wall thickness are identical; First suspension and support 6 hangs for Dan Gang, and its pipe portion is connected on the horizontal straight section of the first bend pipe, and its root is connected on the steel channel beam above furnace roof; Second suspension and support 7 is sliding support, and its pipe portion is connected on steam by-pass pipe, shields on the suspention beam of outlet header before its root is connected to.
The transformation process of the utility model on existing DG2060/17.6-II 1 type boiler is:
The each steam by-pass pipe be connected with steam entrance header 2 on DG2060/17.6-II 1 type boiler and heart side is contiguous in the boiler saturated vapor fairlead thereof are all disconnected also brachymemma with the header stub (tube) in steam entrance header 2, each steam by-pass pipe 3 after disconnecting also brachymemma by the first bend pipe 4 and the second bend pipe 5 again and saturated vapor fairlead 1 adjacent thereto are interconnected, form improved steam flow, and Flat Lid 8 is installed additional on the header stub (tube) disconnected, the first suspension and support 6 and the second suspension and support 7 is installed again additional on the first bend pipe 4 and steam by-pass pipe 3.
Claims (6)
1. prevent and treat the system of the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube for one kind, it is characterized in that, be made up of saturated vapor fairlead (1), the first bend pipe (4), the second bend pipe (5), steam by-pass pipe (3), the first suspension and support (6), the second suspension and support (7) and Flat Lid (8), saturated vapor fairlead (1) is connected with steam by-pass pipe (3) through the first bend pipe (4) and the second bend pipe (5);
The pipe portion of described first suspension and support (6) is connected on the horizontal straight section of the first bend pipe (4), and the root of the first suspension and support (6) is connected on the steel channel beam (9) above furnace roof;
The pipe portion of described second suspension and support (7) is connected on steam by-pass pipe (3), and the root of the second suspension and support (7) is connected on the suspention beam (10) of front screen outlet header;
Flat Lid (8) is connected on the header stub (tube) after the upper disconnection of steam entrance header (2).
2. the system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube according to claim 1, is characterized in that:
The number of described first bend pipe (4) is 6;
The number of described second bend pipe (5) is 6;
The number of described first suspension and support (6) is 6;
The number of described second suspension and support (7) is 6.
3. the system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube according to claim 1, it is characterized in that, described first bend pipe (4) is single bend pipe bending, and the material of the first bend pipe (4) and steam by-pass pipe (3) and saturated vapor fairlead (1), external diameter and wall thickness are identical.
4. the system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube according to claim 1, it is characterized in that, described second bend pipe (5) is twin elbow, and the material of the second bend pipe (5) and steam by-pass pipe (3) and saturated vapor fairlead (1), external diameter and wall thickness are identical.
5. the system of control DG2060/17.6-II 1 type boiler roof tube quick-fried leakage according to claim 1, is characterized in that, described first suspension and support (6) is hung for Dan Gang.
6. the system of the quick-fried leakage of control DG2060/17.6-II 1 type boiler roof tube according to claim 1, it is characterized in that, described second suspension and support (7) is sliding support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324055.8U CN204693366U (en) | 2015-05-19 | 2015-05-19 | A kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324055.8U CN204693366U (en) | 2015-05-19 | 2015-05-19 | A kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube |
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| CN204693366U true CN204693366U (en) | 2015-10-07 |
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| CN201520324055.8U Active CN204693366U (en) | 2015-05-19 | 2015-05-19 | A kind of system of preventing and treating the quick-fried leakage of DG2060/17.6-II 1 type boiler roof tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848195A (en) * | 2015-05-19 | 2015-08-19 | 西安热工研究院有限公司 | Method and system for prevention and treatment of burst leakage of roof pipe of DG2060/17.6-II1 type boiler |
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2015
- 2015-05-19 CN CN201520324055.8U patent/CN204693366U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848195A (en) * | 2015-05-19 | 2015-08-19 | 西安热工研究院有限公司 | Method and system for prevention and treatment of burst leakage of roof pipe of DG2060/17.6-II1 type boiler |
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