CN215174961U - Low-low-temperature economizer device with intermediate header - Google Patents
Low-low-temperature economizer device with intermediate header Download PDFInfo
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- CN215174961U CN215174961U CN202121523705.3U CN202121523705U CN215174961U CN 215174961 U CN215174961 U CN 215174961U CN 202121523705 U CN202121523705 U CN 202121523705U CN 215174961 U CN215174961 U CN 215174961U
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Abstract
The utility model discloses a low-temperature economizer device with an intermediate header, which relates to the field of waste heat recovery and utilization of tail flues of thermal power plants, and comprises a main body, wherein the main body comprises an equipment top sealing shell, a high-temperature section pipe group is arranged inside the main body, a low-temperature section pipe group is arranged on one side of the high-temperature section pipe group, the high-temperature section pipe group comprises a high-temperature module, the upper end of the high-temperature module is provided with a first rear sealing shell, one end of the high-temperature module is connected with a high-temperature module water outlet valve, one end of the high-temperature module water outlet valve, which is far away from the high-temperature module, is connected with an original equipment header, and the other end of the high-temperature module is connected with a high-temperature module water inlet valve; the utility model discloses need not keep apart whole layer module again, keep apart by original whole layer promptly and become now keep apart half of whole layer, half of this layer of module can continue the operation, has avoided causing the function loss of whole layer module because of leaking, has effectively reduced the descending range of work efficiency when low temperature economizer takes place to leak.
Description
Technical Field
The utility model relates to a thermal power plant's afterbody flue waste heat recovery utilizes the field, especially relates to a low temperature economizer device of header in middle of area.
Background
With the increasingly stricter national requirements on high-efficiency cleaning and low-carbon environmental protection of thermal power generating units, more and more power plants recover the waste heat of the flue gas at the tail of the boiler by additionally arranging low-temperature economizer devices. The low-temperature economizer is installed on a tail flue at the outlet of the air preheater of the boiler, tail flue gas is used for heating condensed water in the low-pressure regenerative system, and discharged water is introduced into the deaerator, so that the water supply temperature is increased, the smoke exhaust temperature is reduced, and the circulation efficiency of the thermal power plant can be improved.
However, the existing low-temperature economizer has the defects that the tail smoke contains more particles which easily abrade the pipe wall of the low-temperature economizer and cause the low-temperature economizer to leak after a long time, and the efficiency of the low-temperature economizer is greatly reduced due to the isolation of the whole group, so that unnecessary loss is increased.
The conventional low-temperature economizer is generally in a five-layer structure, each layer is a module, the total number of the modules is five, each module is provided with a water inlet valve and a water outlet valve, when the low-temperature economizer leaks in the operation process of a unit, in order to not influence the continuous safe operation of the unit, the modules with defects need to be isolated and quit the operation, and the working efficiency of the low-temperature economizer is reduced, so that the low-temperature economizer device with the intermediate header is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art, and providing a low-temperature economizer device with an intermediate header.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a header's low temperature economizer device in middle of in-band, includes the main part, the main part includes equipment top capsule, the inside high temperature section nest of tubes that is provided with of main part, high temperature section nest of tubes one side is provided with the low temperature section nest of tubes.
Further, high temperature section tube bank includes high temperature module, the high temperature module upper end is provided with back capsule one, high temperature module one end is connected with high temperature module outlet valve, high temperature module outlet valve keeps away from high temperature module one end and is connected with former equipment header, the high temperature module other end is connected with high temperature module inlet valve, high temperature module inlet valve one end is provided with the elbow.
Further, low temperature section pipe group includes the low temperature module, low temperature module upper end is provided with back capsule two, be provided with a plurality of groups steel sheet between high temperature module and the low temperature module.
Furthermore, low temperature module one end is connected with low temperature module inlet valve, the low temperature module other end is connected with low temperature module outlet valve, the low temperature module outlet valve other end is provided with the elbow, the elbow other end is provided with the connecting pipe.
Furthermore, a middle header is arranged between the two groups of connecting pipes, a seamless pipe is arranged on the middle header, and header end covers are arranged at two ends of the seamless pipe.
Further, a plurality of groups the connecting pipe equidistance sets up on seamless pipe surface, high temperature module and low temperature module all are the S type setting inside the main part, middle header passes through the seamless pipe activity of connecting pipe cooperation and sets up between low temperature module outlet valve door and high temperature module inlet valve.
Compared with the prior art, the beneficial effects of the utility model reside in that:
by dividing each layer of a conventional low-low temperature economizer apparatus equally into two modules: the high temperature module of flue gas entry, the low temperature module of exhanst gas outlet, be connected by the middle header in the external, be equipped with the valve on the pipeline that every module and the middle header in the external are connected, when low temperature economizer takes place to leak, only need through closing the business turn over of leakage point place module, the outlet valve, it withdraws from the operation to leak the module, needn't keep apart whole layer module again, keep apart by original whole layer and become the half of present isolation whole layer promptly, the half of this layer of module can continue to operate, avoided causing the function loss of whole layer module because of leaking, the range of the decline of work efficiency when low temperature economizer takes place to leak has effectively been reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural view of a high-temperature section pipe group and a low-temperature section pipe group of a low-low temperature economizer device with an intermediate header provided by the utility model;
fig. 2 is a schematic structural diagram of a high-temperature module and a low-temperature module of a low-temperature economizer device with an intermediate header according to the present invention;
fig. 3 is a schematic structural diagram of the whole low-temperature economizer device with an intermediate header according to the present invention;
fig. 4 is a schematic structural view of a seamless pipe of a low-temperature economizer device with an intermediate header according to the present invention.
In the figure: 1. a high temperature section pipe group; 2. a first rear enclosure; 3. a connecting pipe; 4. an intermediate header; 5. a steel plate; 6. a second rear enclosure; 7. a low temperature section tube bank; 8. an equipment top enclosure; 9. bending the pipe; 10. a seamless pipe; 101. a header end cover; 11. a high temperature module; 12. a low temperature module; 13. a low temperature module water inlet valve; 14. a low temperature module outlet valve; 15. a high temperature module water inlet valve; 16. a high temperature module outlet valve; 17. original equipment header; 18. a main body.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only 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.
Example 1
Referring to fig. 1-4, the present invention provides a technical solution: a low-temperature economizer device with an intermediate header comprises a main body 18, wherein the main body 18 comprises an equipment top sealing shell 8, a high-temperature section pipe group 1 is arranged inside the main body 18, and a low-temperature section pipe group 7 is arranged on one side of the high-temperature section pipe group 1.
Referring to fig. 2, the high-temperature section pipe assembly 1 includes a high-temperature module 11, a first rear enclosure 2 is disposed at an upper end of the high-temperature module 11, one end of the high-temperature module 11 is connected to a high-temperature module outlet valve 16, one end of the high-temperature module outlet valve 16, which is far away from the high-temperature module 11, is connected to an original equipment header 17, the other end of the high-temperature module 11 is connected to a high-temperature module inlet valve 15, and one end of the high-temperature module inlet valve 15 is provided with an elbow 9.
Referring to fig. 2, the low-temperature section pipe group 7 includes a low-temperature module 12, a second rear enclosure 6 is disposed at the upper end of the low-temperature module 12, a plurality of sets of steel plates 5 are disposed between the high-temperature module 11 and the low-temperature module 12, one end of the low-temperature module 12 is connected to a low-temperature module water inlet valve 13, the other end of the low-temperature module 12 is connected to a low-temperature module water outlet valve 14, the other end of the low-temperature module water outlet valve 14 is provided with an elbow 9, and the other end of the elbow 9 is provided with a connecting pipe 3.
In the embodiment, a first rear enclosure 2 is arranged on a high-temperature module 11 in the low-temperature economizer through a steel plate 5, a second rear enclosure 6 is arranged on a low-temperature module 12, and an equipment top enclosure 8 with a protection function is arranged on a main body 18.
Specifically, when the water-cooled smoke purifier is used, water flows through the pipeline, smoke flows through the shell, the smoke exchanges heat with water in a countercurrent mode, water enters the low-temperature module 12 from the low-temperature module water inlet valve 13, flows through the intermediate header 4 and the high-temperature module 11 in sequence, then flows out from the high-temperature module water outlet valve 16, and the flow direction of the smoke is opposite to that of water flow. Because contain more particulate matter in the flue gas, the essential heat transfer pipe wall that will wear and tear of particulate matter, it is long-lasting, just make the heat exchanger pipe wall have the possibility of leaking, when the emergence is leaked, at first need find the leak point, keep apart corresponding module again and do not need whole group module to keep apart, leak when fourth layer high temperature module 11, need close low temperature module inlet valve 13 and high temperature module outlet valve 16 before and keep apart whole fourth group, the utility model discloses a low temperature economizer only need close high temperature module inlet valve 15 and high temperature module outlet valve 16 can, low temperature module 12 still can normally work, has realized single module and has kept apart, has effectively reduced the descending range of work efficiency when low temperature economizer takes place to leak.
Example 2
Referring to fig. 3-4, the present invention provides a technical solution: a low-temperature economizer device with an intermediate header comprises a main body 18, wherein the main body 18 comprises an equipment top sealing shell 8, a high-temperature section pipe group 1 is arranged inside the main body 18, and a low-temperature section pipe group 7 is arranged on one side of the high-temperature section pipe group 1.
An intermediate header 4 is arranged between the two groups of connecting pipes 3, a seamless pipe 10 is arranged on the intermediate header 4, header end covers 101 are arranged at two ends of the seamless pipe 10, the groups of connecting pipes 3 are equidistantly arranged on the surface of the seamless pipe 10, the high-temperature module 11 and the low-temperature module 12 are both arranged inside the main body 18 in an S shape, and the intermediate header 4 is movably arranged between the low-temperature module water outlet valve 14 and the high-temperature module water inlet valve 15 through the connecting pipes 3 matched with the seamless pipe 10.
Specifically, high temperature module 11 through flue gas entry and low temperature module 12 of exhanst gas outlet, connect by external middle header 4 between two modules, wherein middle header 4 includes seamless pipe 10 and header end cover 101, middle header 4, cooperate connecting pipe 3 to set up the position between low temperature module outlet valve 14 and high temperature module inlet valve 15 through elbow 9, when low-temperature economizer takes place to leak, only need through closing the business turn over of leakage point place module, outlet valve, the operation is withdrawed from to the leakage module, needn't keep apart whole layer module again, become the half of present isolation whole layer by original whole layer isolation, the other half of this layer module can continue to operate, avoided leading to the fact the function loss of whole layer module because of leaking.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The low-temperature economizer device with the intermediate header comprises a main body (18) and is characterized in that the main body (18) comprises an equipment top sealing shell (8), a high-temperature section pipe group (1) is arranged inside the main body (18), and a low-temperature section pipe group (7) is arranged on one side of the high-temperature section pipe group (1).
2. The low-temperature economizer device with the intermediate header as claimed in claim 1, wherein the high-temperature section pipe group (1) comprises a high-temperature module (11), a first rear enclosure (2) is arranged at the upper end of the high-temperature module (11), a high-temperature module water outlet valve (16) is connected to one end of the high-temperature module (11), an original equipment header (17) is connected to one end, away from the high-temperature module (11), of the high-temperature module water outlet valve (16), a high-temperature module water inlet valve (15) is connected to the other end of the high-temperature module (11), and an elbow (9) is arranged at one end of the high-temperature module water inlet valve (15).
3. The economizer device with intermediate header of claim 2, wherein the low temperature section tube group (7) comprises a low temperature module (12), a second rear enclosure (6) is arranged at the upper end of the low temperature module (12), and a plurality of groups of steel plates (5) are arranged between the high temperature module (11) and the low temperature module (12).
4. The low-temperature economizer device with the intermediate header as claimed in claim 3, wherein one end of the low-temperature module (12) is connected with a low-temperature module water inlet valve (13), the other end of the low-temperature module (12) is connected with a low-temperature module water outlet valve (14), the other end of the low-temperature module water outlet valve (14) is provided with an elbow (9), and the other end of the elbow (9) is provided with a connecting pipe (3).
5. The low-temperature economizer device with the intermediate header as claimed in claim 4, wherein the intermediate header (4) is arranged between the two groups of connecting pipes (3), a seamless pipe (10) is arranged on the intermediate header (4), and header end covers (101) are arranged at two ends of the seamless pipe (10).
6. The economizer device with intermediate header as claimed in claim 5, wherein several groups of said connecting pipes (3) are arranged on the surface of the seamless pipe (10) with equal distance, said high temperature module (11) and low temperature module (12) are arranged inside the main body (18) in S shape, said intermediate header (4) is movably arranged between the low temperature module outlet valve (14) and the high temperature module inlet valve (15) through the connecting pipe (3) cooperating with the seamless pipe (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121523705.3U CN215174961U (en) | 2021-07-06 | 2021-07-06 | Low-low-temperature economizer device with intermediate header |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121523705.3U CN215174961U (en) | 2021-07-06 | 2021-07-06 | Low-low-temperature economizer device with intermediate header |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339778A (en) * | 2021-07-06 | 2021-09-03 | 华能安源发电有限责任公司 | Low-low-temperature economizer device with intermediate header |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339778A (en) * | 2021-07-06 | 2021-09-03 | 华能安源发电有限责任公司 | Low-low-temperature economizer device with intermediate header |
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