CN201836869U - Multi-path convection section of steam injection boiler in oil field - Google Patents
Multi-path convection section of steam injection boiler in oil field Download PDFInfo
- Publication number
- CN201836869U CN201836869U CN2010205469821U CN201020546982U CN201836869U CN 201836869 U CN201836869 U CN 201836869U CN 2010205469821 U CN2010205469821 U CN 2010205469821U CN 201020546982 U CN201020546982 U CN 201020546982U CN 201836869 U CN201836869 U CN 201836869U
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- tube bank
- snakelike tube
- convection section
- tube bundle
- serpentine tube
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Abstract
The utility model provides a multi-path convection section of a steam injection boiler in the oil field, which can slow down soot formation on a heating surface, easily achieve dust cleaning, remarkably improve the heat efficiency of the steam injection boiler due to less power consumption of a plunger pump and realize thorough discharge of water in the convection section. The technical scheme adopted by the utility model is that the multi-path convection section of the steam injection boiler in the oil field comprises a first serpentine tube bundle, a second serpentine tube bundle and a framework. The multi-path convection section is structurally characterized in that one end of the first serpentine tube bundle is communicated with a water inlet distribution pipe, and the other end is communicated with a first intermediate distribution pipe; one end of the second serpentine tube bundle is connected with a first intermediate distribution pipe, and the other end of the second serpentine tube bundle is connected with a water outlet collecting pipe; the second intermediate distribution pipe is arranged in the middle of the second serpentine tube bundle; and both the first serpentine tube bundle and the second serpentine tube bundle are positioned in a flue gas passage, a high-temperature flue gas inlet is formed at the bottom of the flue gas passage, and a flue gas outlet is formed at the top of the flue gas passage.
Description
Technical field
The utility model relates to boiler, particularly the uphole steam generator convection section.
Background technology
Uphole steam generator commonly used now all adopts the direct current cooker form, its convection section generally all is the single process structure, forming heating surface by a small amount of major diameter light pipe and a large amount of major diameter finned tube, connects with no straight section elbow welding in the tube and tube two ends, and water only flows in a pipe all the time.Because uphole steam generator fuel mainly is heavy oil and crude oil, dust stratification is serious and be difficult to remove and the heat dispersion variation on finned tube, cause the exhaust gas temperature height (to move about one month, exhaust gas temperature just by about 200 ℃ rise to 260 ℃ and be forced to the blowing out high pressure water washing), heat loss due to exhaust gas is big, and the thermal efficiency is low; The water speed of single process is fast, and the flow resistance of water is big, and the plunger displacement pump power consumption is big; Heat-insulation layer in the convection section directly contacts with flue gas, and heat-insulation layer is fragile when the high pressure water washing heating surface is used in blowing out, causes radiation loss to strengthen; Water can not drain in the convection section, and it is serious to freeze in the pipe when causing the winter blowing out, opens the stove difficulty.
Summary of the invention
The technical problems to be solved in the utility model is that the deficiency at prior art exists provides a kind of uphole steam generator multipaths convection section, it can slow down fouling of heating surface and deashing is easy, the plunger displacement pump power consumption is little, can significantly improve the injection boiler thermal efficiency, and can drain the water in the convection section.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is, described uphole steam generator multipaths convection section comprises the first snakelike tube bank and the second snakelike tube bank, framework, its design feature is that an end of the first snakelike tube bank is communicated with and the other end first intermediate section pipe arrangement connection together of this first snakelike tube bank with the water inlet distributing pipe; One end of the second snakelike tube bank connects the first intermediate section pipe arrangement and the other end connection water outlet collecting pipe of this second snakelike tube bank; Intrafascicular of second coiled pipe is provided with the second intermediate section pipe arrangement; The first snakelike tube bank and the second snakelike tube bank are arranged in exhaust gases passes, and the bottom of described exhaust gases passes is provided with the high-temperature flue gas import, and the top of this exhaust gases passes is an exhanst gas outlet.
Below the utility model made further specify.
Design principle of the present utility model is (referring to Fig. 3 and Fig. 1), supply water to the first snakelike tube bank 1 by water inlet distributing pipe 3 by about 100 ℃ the feedwater that the water-water heat exchanger shell side of injection boiler is next, after coming together in the first intermediate section pipe arrangement 4, supply water to the second snakelike tube bank 2 again, be provided with the second intermediate section pipe arrangement 5 in the middle of the second snakelike tube bank 2, feedwater at last is heated to and comes together in water outlet collecting pipe 6 laggard entry-water-to-water heat exchanger tube sides about 300 ℃; Referring to Fig. 2, about 900 ℃ the high-temperature flue gas that is come by the injection boiler radiant section enters from high-temperature flue gas import 13, and the flow through second snakelike tube bank 2 and the first snakelike tube bank 1 are cooled to below 170 ℃ and are discharged by exhanst gas outlet row 14.
The furnace wall of being made up of inner casing around the described first snakelike tube bank and the heat-insulation layer between outer casing and described inner casing and the outer casing also can be set.
The first snakelike tube bank and the second snakelike tube bank can (diameter be 25mm-38mm) make, and water flows in many and tubulation simultaneously with many minor diameter light pipes arranged side by side; Water in the first snakelike tube bank and the second snakelike tube bank can be designed to the variable mass flow rate, i.e. water speed is about 2 times of the interior water speed of the first snakelike tube bank in the second snakelike tube bank.
As known from the above, the utility model is a uphole steam generator multipaths convection section, and it is compared the beneficial effect that is had with prior art and is:
(1) adopting the snakelike tube bank be made up of many minor diameter light pipes is heating surface, not only can slow down fouling of heating surface and deashing is easy, has also reduced exhaust gas temperature, has improved the injection boiler thermal efficiency;
(2) with the mode of multipaths, reduced water speed, the plunger displacement pump power consumption is little;
(3) first snakelike tube banks are provided with inner casing around the zone, and blowing out does not damage heat-insulation layer during with the high pressure water washing heating surface, high insulating effect, and the insulation material long service life, maintenance load is little;
(4) second intermediate section pipe arrangement bottoms are provided with discharging valve, can drain the water in the convection section during blowing out, freeze in the pipe in the time of can preventing the winter blowing out.
Description of drawings
Fig. 1 is the longitudinal cross-section structural representation of a kind of embodiment of the utility model;
Fig. 2 be among Fig. 1 A-A to structural representation;
Fig. 3 is the current journey schematic diagram of device shown in Figure 1.
In the drawings:
1-the first snakelike tube bank the out, 2-the second snakelike tube bank, 3-water inlet distributing pipe,
4-the first intermediate section pipe arrangement, 5-the second intermediate section pipe arrangement, 6-water outlet collecting pipe,
7-framework, 8-outer casing, 9-inner casing,
10-heat-insulation layer, 11-fixture, 12-discharging valve,
The import of 13-high-temperature flue gas, 14-exhanst gas outlet.
The specific embodiment
As depicted in figs. 1 and 2, uphole steam generator multipaths convection section described in the utility model comprises that an end of the first snakelike tube bank 1 and second snakelike tube bank 2, the first snakelike tube banks 1 is communicated with and the other end first intermediate section pipe arrangement, 4 connections together of this first snakelike tube bank 1 with water inlet distributing pipe 3; One end of the second snakelike tube bank 2 connects the first intermediate section pipe arrangement 4 and the other end connection water outlet collecting pipe 6 of this second snakelike tube bank 2; Be provided with the second intermediate section pipe arrangement 5 in the middle of the second snakelike tube bank 2; The first snakelike tube bank 1 and the second snakelike tube bank 2 are arranged in exhaust gases passes, and the bottom of described exhaust gases passes is provided with high-temperature flue gas import 13, and the top of this exhaust gases passes is an exhanst gas outlet 14.Water is the variable mass flow rate in the first snakelike tube bank 1 and the second snakelike tube bank 2, and water speed is about 2 times of the first snakelike tube bank 1 interior water speed in the second snakelike tube bank 2.
The described first snakelike tube bank 1 and the second snakelike tube bank 2 are fixed on the framework 7 by fixture 11.
The first snakelike tube bank 1 and the second snakelike tube bank 2 are formed by many minor diameter light pipes arranged side by side, and the diameter of minor diameter light pipe is 25mm-38mm.
The second intermediate section pipe arrangement, 5 bottoms are provided with discharging valve 12.
Also can around the first snakelike tube bank, 1 zone, inner casing 9 be set, the furnace wall of being made up of inner casing 9 around the described first snakelike tube bank 1 and the heat-insulation layer 10 between outer casing 8 and described inner casing 9 and the outer casing 8 is set.
Described furnace wall is fixed on the framework 7.
Claims (6)
1. uphole steam generator multipaths convection section, comprise the first snakelike tube bank (1) and the second snakelike tube bank (2), it is characterized in that an end of the first snakelike tube bank (1) is communicated with and the other end first intermediate section pipe arrangement (4) connection together of this first snakelike tube bank (1) with water inlet distributing pipe (3); One end of the second snakelike tube bank (2) connects the first intermediate section pipe arrangement (4) and the other end connection water outlet collecting pipe (6) of this second snakelike tube bank (2); Be provided with the second intermediate section pipe arrangement (5) in the middle of the second snakelike tube bank (2); The first snakelike tube bank (1) and the second snakelike tube bank (2) are arranged in exhaust gases passes, and the bottom of described exhaust gases passes is provided with high-temperature flue gas import (13), and the top of this exhaust gases passes is exhanst gas outlet (14).
2. according to the described uphole steam generator multipaths of claim 1 convection section, it is characterized in that the described first snakelike tube bank (1) and the second snakelike tube bank (2) are fixed on the framework (7) by fixture (11).
3. according to the described uphole steam generator multipaths of claim 1 convection section, it is characterized in that the second intermediate section pipe arrangement (5) bottom is provided with discharging valve (12).
4. according to the described uphole steam generator multipaths of claim 1 convection section, it is characterized in that the first snakelike tube bank (1) and the second snakelike tube bank (2) are formed by many minor diameter light pipes arranged side by side, the diameter of minor diameter light pipe is 25mm-38mm.
5. uphole steam generator multipaths convection section according to claim 1 is characterized in that, the first snakelike tube bank (1) is provided with inner casing (9) around the zone.
6. according to the described uphole steam generator multipaths of claim 1 convection section, it is characterized in that, by the described first snakelike tube bank (1) all around inner casing (9) and the heat-insulation layer (10) between outer casing (8) and described inner casing (9) and the outer casing (8) form furnace wall; Described furnace wall is fixed on the framework (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205469821U CN201836869U (en) | 2010-09-29 | 2010-09-29 | Multi-path convection section of steam injection boiler in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205469821U CN201836869U (en) | 2010-09-29 | 2010-09-29 | Multi-path convection section of steam injection boiler in oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836869U true CN201836869U (en) | 2011-05-18 |
Family
ID=44006976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205469821U Expired - Lifetime CN201836869U (en) | 2010-09-29 | 2010-09-29 | Multi-path convection section of steam injection boiler in oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537923A (en) * | 2012-01-18 | 2012-07-04 | 中国石油天然气第八建设有限公司 | Light tube and container type special steam generator specially for oilfields |
-
2010
- 2010-09-29 CN CN2010205469821U patent/CN201836869U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537923A (en) * | 2012-01-18 | 2012-07-04 | 中国石油天然气第八建设有限公司 | Light tube and container type special steam generator specially for oilfields |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |