CN204084316U - Supercritical Boiler Start up System steam-water pipeline - Google Patents
Supercritical Boiler Start up System steam-water pipeline Download PDFInfo
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- CN204084316U CN204084316U CN201420538732.1U CN201420538732U CN204084316U CN 204084316 U CN204084316 U CN 204084316U CN 201420538732 U CN201420538732 U CN 201420538732U CN 204084316 U CN204084316 U CN 204084316U
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- guiding tube
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- distributing pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 230000008676 import Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a kind of Supercritical Boiler Start up System steam-water pipeline, this steam-water pipeline comprises left branch road and right branch road, pressure-equalizing pipe, steam, two branch roads include steam-water separator, steam guiding tube, manifold trunk, distributing pipe, the entrance of steam guiding tube is connected with steam-water separator upper outlet by pressure-equalizing pipe, steam guiding tube outlet is connected with manifold trunk entrance, manifold trunk outlet is connected with distributing pipe entrance, distributing pipe outlet is connected with steam, it is characterized in that the distributing pipe of the steam guiding tube of left branch road and the mutual arranged crosswise of steam guiding tube of right branch road or left branch road and the mutual arranged crosswise of distributing pipe of right branch road, guide on the right side of steam inlet header for left branch road separator outlet working medium, right branch road separator outlet working medium is guided on the left of steam inlet header.The utility model can eliminate super critical boiler superheat steam temperature deviation, ensures that pendant superheater import and export both sides vapor (steam) temperature is even, realizes superheat steam temperature normal regulating.
Description
Technical field
The utility model relates to a kind of super critical boiler, particularly relates to a kind of Supercritical Boiler Start up System steam-water pipeline.
Background technology
Heat power plant boiler is in operation and often occurs along furnace chamber width thermal deviation in various degree, this thermal deviation is normally because combustion conditions instability, flue gas residual rotation (Process In A Tangential Firing), fuel quantity drop into the factor such as uneven and cause, existence along furnace chamber width thermal deviation can cause the flue-gas temperature deviation of boiler arranged on left and right sides different with working medium caloric receptivity, and then causing vapor (steam) temperature to produce deviation, this deviation is difficult to be eliminated by combustion adjustment means at short notice usually.
For subcritical dum boiler, the steam flowed out from drum is saturated vapor, and the working medium that drum outlet enters next stage superheater does not exist temperature deviation, and a large amount of operation in recent years is overcritical, ultra-supercritical boiler, drum replace by two steam-water separators, the steam guiding tube of two steam-water separator outlets and distributing pipe all adopt and are arranged in parallel, then to be connected with steam 14 (see figure 5) by distributing pipe, exporting working medium at DC operation mode steam-water separator is the steam that there is certain degree of superheat, and now burner hearth once there is thermal deviation, directly cause a left side, right side steam-water separator outlet steam temperature produces deviation, and then there is temperature deviation in the working medium entering next stage superheater, this deviation constantly increases along steam flow.
Longtime running and result of the test show: Temperature Deviation is at super critical boiler ubiquity, and the super critical boiler of burning inferior coal is particularly outstanding.For 600MW overcritical W type boiler, when boiler left and right side steam-water separator outlet steam temperature there is 10-15 DEG C of deviation time, vapor stream through heating surface at different levels to pendant superheater import time, Temperature Deviation can expand 20-30 DEG C to, reaches about 2 times of initial deviation.Superheated steam left and right side temperature deviation is large, not only need to drop into a large amount of desuperheating water, reduce unit economy, simultaneously when Temperature Deviation is excessive, pendant superheater, high temperature superheater outlet steam temperature is difficult to by feedwater and desuperheating water normal regulating, even cause high-temperature surface overtemperature, serious threat safe operation of the boiler.
Utility model content
The purpose of this utility model is: provide a kind of and eliminate super critical boiler superheat steam temperature deviation, ensure that pendant superheater import and export both sides vapor (steam) temperature is even, realize the Supercritical Boiler Start up System steam-water pipeline of superheat steam temperature normal regulating.
This Supercritical Boiler Start up System steam-water pipeline that the utility model provides comprises left branch road and right branch road, pressure-equalizing pipe, steam, two branch roads include steam-water separator, steam guiding tube, manifold trunk, distributing pipe, the entrance of steam guiding tube is connected with steam-water separator upper outlet by pressure-equalizing pipe, steam guiding tube outlet is connected with manifold trunk entrance, manifold trunk outlet is connected with distributing pipe entrance, distributing pipe outlet is connected with steam, it is characterized in that the distributing pipe of the steam guiding tube of left branch road and the mutual arranged crosswise of steam guiding tube of right branch road or left branch road and the mutual arranged crosswise of distributing pipe of right branch road, guide on the right side of steam inlet header for left branch road separator outlet working medium, right branch road separator outlet working medium is guided on the left of steam inlet header.
As a kind of preferred embodiment, the steam guiding tube of described left branch road intersects mutually with the steam guiding tube of right branch road, and the distributing pipe of the distributing pipe of left branch road and right branch road is parallel to each other.
As another kind of preferred embodiment, the steam guiding tube of left branch road and the steam guiding tube of right branch road are parallel to each other, and the distributing pipe of left branch road intersects mutually with the distributing pipe of right branch road.
Compared with prior art, the beneficial effects of the utility model: because the steam guiding tube of the utility model to left and right two branch road coming from two steam-water separators has carried out cross layout, or cross layout has been carried out to the distributing pipe of left and right two branch road, like this separator outlet working medium on the left of stove (i.e. left side water-cooling wall outlet vapor) is guided on the right side of steam inlet header, separator outlet working medium on the right side of stove (i.e. right side water-cooling wall outlet vapor) is guided on the left of steam inlet header simultaneously.Under there is thermic load deviation situation in boiler furnace, after adopting this interlaced arrangement structure, water-cooling wall low exit temperature side (low heat loads side) steam guides to furnace outlet high-temperature flue gas side (high heat load side) by intersection, meanwhile water-cooling wall outlet high temperature side (high heat load side) steam guides to furnace outlet low-temperature flue gas side (low heat loads side) by intersection, after intersecting, low temperature side steam is through high-temperature flue gas side steam, enclosure wall superheater, low temperature superheater, after pendant superheater heating surface, steam caloric receptivity increases relative to opposite side, this side steam temperature rise increases, thus reduce both sides Temperature Deviation, pendant superheater is imported and exported left, right both sides vapor (steam) temperature reaches unanimity substantially, the Temperature Deviation problem that final elimination burner hearth thermal deviation causes, improve Boiler Economical Operation and security.
Accompanying drawing explanation
Fig. 1 is the structural representation front view of the utility model embodiment 1.
Fig. 2 is the structural representation top view of the utility model embodiment 1.
Fig. 3 is the structural representation front view of the utility model embodiment 2.
Fig. 4 is the structural representation top view of the utility model embodiment 2.
Fig. 5 is prior art structural representation.
Detailed description of the invention
Below by accompanying drawing, the utility model is described in detail.
Embodiment one:
Fig. 1 and Fig. 2 fully reflects structure of the present utility model.As can be seen from the figure, the utility model has steam 14, pressure-equalizing pipe 5 and left branch road A and right branch road B, left, right branch structure is identical, it is fixed that it determines to come according to the position of steam-water separator, the branch road at steam-water separator place, left side is referred to as left branch road A, the branch road at steam-water separator place, right side is referred to as right branch road B, two branch roads also have steam guiding tube (6 except all having steam-water separator, 7), manifold trunk (8, 9), distributing pipe (10, 11, 12, 13), wherein steam-water separator (3, 4) upper outlet is by pressure-equalizing pipe 5 and corresponding steam guiding tube (6, 7) and water storing tank 17 upper inlet connect, steam-water separator (3, 4) lower outlet is still by tube connector (15, 16) be connected with water storing tank 17 side entrance, steam-water separator (3, 4) entrance with export header 1 by tube connector 2 and water-cooling wall and be connected.
In the present embodiment left branch road A is had: steam-water separator 3, steam guiding tube 6, manifold trunk 9, two distributing pipes (12,13), manifold trunk 9 and two distributing pipes (12,13) are positioned at the right side of steam 14, and manifold trunk 9 is connected with two distributing pipes (12,13), the upper outlet of steam-water separator 3 is connected with steam guiding tube 6 entrance by pressure-equalizing pipe 5, and the outlet of steam guiding tube 6 is connected with manifold trunk 9;
Right branch road B is had: steam-water separator 4, steam guiding tube 7, manifold trunk 8, two distributing pipes (10,11), manifold trunk 8 and two distributing pipes (10,11) are positioned at the left side of steam 14, and manifold trunk 8 is connected with two distributing pipes (10,11), steam-water separator 4 upper outlet is connected with steam guiding tube 7 entrance by pressure-equalizing pipe 5, and the outlet of steam guiding tube 7 is connected with manifold trunk 8.
As can be seen from Fig. 1 and Fig. 2, the steam guiding tube 6 of left branch road A and the steam guiding tube 7 of right arm B are after mutually intersecting, the outlet of steam guiding tube 6 is connected with manifold trunk 9 and arrives on the right side of steam 14, and the outlet of steam guiding tube 7 is connected with manifold trunk 8 and arrives on the left of steam 14.Like this separator on the left of stove (i.e. the steam-water separator of left branch road) being exported working medium (i.e. left side water-cooling wall outlet vapor) guides on the right side of steam inlet header, separator on the right side of stove (i.e. the steam-water separator of right branch road) is exported working medium (i.e. right side water-cooling wall outlet vapor) simultaneously and guides on the left of steam inlet header.Low temperature side steam is after high-temperature flue gas side steam, enclosure wall superheater, low temperature superheater, pendant superheater heating surface, steam caloric receptivity increases relative to opposite side, this side steam temperature rise increases, thus reduce both sides Temperature Deviation, make pendant superheater import and export arranged on left and right sides vapor (steam) temperature substantially to reach unanimity, the final Temperature Deviation eliminated burner hearth thermal deviation and cause.
Embodiment two:
Fig. 3 and Fig. 4 reflects the structure of embodiment two, and as can be seen from the figure this embodiment is compared with embodiment one, and it realizes the utility model object by the left and right arranged crosswise of distributing pipe in left and right branch road, specific as follows:
Have for left branch road A: steam-water separator 3, steam guiding tube 6, manifold trunk 8, two distributing pipes (10,11), the upper outlet of steam-water separator 3 is connected with steam guiding tube 6 entrance by pressure-equalizing pipe 5, and the outlet of steam guiding tube 6 is connected with manifold trunk 8; The entrance of two distributing pipes (10,11) is connected with manifold trunk 8, and outlet then with on the right side of steam 14 is connected
Have for right branch road B: steam-water separator 4, steam guiding tube 7, manifold trunk 9, two distributing pipes (12,13), the upper outlet of steam-water separator 4 is connected with steam guiding tube 7 entrance by pressure-equalizing pipe 5, and the outlet of steam guiding tube 7 is connected with manifold trunk 9; The entrance of two distributing pipes (12,13) is connected with manifold trunk 9, and outlet then with on the left of steam 14 is connected.
Be it can also be seen that by Fig. 3 and Fig. 4 and be arranged in parallel between the steam guiding tube 6 of left branch road A and the steam guiding tube 7 of manifold trunk 8 and right branch road B and manifold trunk 9, then arranged crosswise between the distributing pipe (10,11) of left branch road A and the distributing pipe (12,13) of right branch road, be connected with steam 14, to reach the purpose of this utility model after mutually intersecting.
Claims (3)
1. a Supercritical Boiler Start up System steam-water pipeline, comprises left branch road (A) and right branch road (B), pressure-equalizing pipe (5), steam (14), left and right two branch road includes steam-water separator (3, 4), steam guiding tube (6, 7), manifold trunk (8, 9), distributing pipe (10, 11, 12, 13), steam guiding tube (6, 7) entrance is by pressure-equalizing pipe (5) and steam-water separator (3, 4) upper outlet is connected, steam guiding tube (6, 7) outlet and manifold trunk (8, 9) entrance connects, manifold trunk (8, 9) outlet and distributing pipe (10, 11, 12, 13) entrance connects, distributing pipe (10, 11, 12, 13) outlet is connected with steam (14), it is characterized in that the distributing pipe (10 of the steam guiding tube (6) of left branch road (A) and the mutual arranged crosswise of steam guiding tube (7) of right branch road (B) or left branch road (A), 11) with the distributing pipe (12 of right branch road (B), 13) mutual arranged crosswise, the separator outlet working medium for described left branch road is guided on the right side of steam inlet header, and the separator outlet working medium of right branch road is guided on the left of steam inlet header.
2. Supercritical Boiler Start up System steam-water pipeline according to claim 1, steam guiding tube (7) arranged crosswise mutually of the steam guiding tube (6) that it is characterized in that described left branch road and right branch road (B), and the distributing pipe of left branch road (A) (10,11) is parallel to each other with the distributing pipe (12,13) of right branch road (B) and arranges.
3. Supercritical Boiler Start up System steam-water pipeline according to claim 1, it is characterized in that the steam guiding tube (6) of described left branch road and the steam guiding tube (7) of right branch road are parallel to each other to arrange, and the distributing pipe of left branch road (10,11) arranged crosswise mutual to the distributing pipe (12,13) of right branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538732.1U CN204084316U (en) | 2014-09-19 | 2014-09-19 | Supercritical Boiler Start up System steam-water pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538732.1U CN204084316U (en) | 2014-09-19 | 2014-09-19 | Supercritical Boiler Start up System steam-water pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN204084316U true CN204084316U (en) | 2015-01-07 |
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| CN201420538732.1U Active CN204084316U (en) | 2014-09-19 | 2014-09-19 | Supercritical Boiler Start up System steam-water pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576607A (en) * | 2022-03-09 | 2022-06-03 | 东方电气集团东方锅炉股份有限公司 | Supercritical boiler ceiling wall-wrapped steam-water flow realization system and method |
-
2014
- 2014-09-19 CN CN201420538732.1U patent/CN204084316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576607A (en) * | 2022-03-09 | 2022-06-03 | 东方电气集团东方锅炉股份有限公司 | Supercritical boiler ceiling wall-wrapped steam-water flow realization system and method |
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