CN204127933U - Large-tonnage subcritical pressure boiler steam generator - Google Patents
Large-tonnage subcritical pressure boiler steam generator Download PDFInfo
- Publication number
- CN204127933U CN204127933U CN201420506410.9U CN201420506410U CN204127933U CN 204127933 U CN204127933 U CN 204127933U CN 201420506410 U CN201420506410 U CN 201420506410U CN 204127933 U CN204127933 U CN 204127933U
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- convection section
- water
- tube bank
- combustion chamber
- radiant box
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Abstract
The utility model relates to a kind of large-tonnage subcritical pressure boiler steam generator.Be communicated with successively along the heat smoke direction of motion by burner, radiant box will, changeover portion, lower convection section, upper convection section, chimney.Changeover portion connects radiant box will rear end, and lower convection section is located at the top of changeover portion, and upper convection section is arranged on the top of lower convection section; Water-water heat exchanger is the left side that the structure of the snakelike reciprocation pipe of barrel forms is placed in radiant box will outside, carries out heat exchange.Demineralized water feeds water from feed-water intake and enters after feed pump pressurization, successively through water pipeline, water-water heat exchanger (shell side), upper convection section, lower convection section, water-water heat exchanger (tube side), radiant box will tube bank, medium, progressively by heat temperature raising, exports the saturated moist steam of high pressure.The utility model can solve brings up to 40t/h by single pass boiler tonnage, can increase again the technical problem of steam quality to 85%.
Description
Technical field
The utility model belongs to the special equipment of a kind of petroleum industry heating exploitation underground viscous crude.The specifically steam generator of the produced moist steam that a kind of oil field is special.
Background technology
Steam generator is the nucleus equipment of oil-field thick-oil exploitation, and domestic production starts from the eighties initial stage.The steam generator list backhaul radiant section produced both at home and abroad at present, maximum tonnage is position 30t/h only, and mass dryness fraction is 80%.For adapting to the new model in oil field, effective reduction boiler operatiopn cost, carry out the policy that national energy-saving consumption reduction reduces discharging, adapt to the outer novel oil production technology of Now Domestic to the requirements at the higher level of thermal recovery equipment, the steam generator that the higher mass dryness fraction of a kind of more large-tonnage is badly in need of in thickened oil recovery meets oil thermal recovery requirement.
Summary of the invention
The purpose of this utility model is to provide a kind of large-tonnage subcritical pressure boiler steam generator, and it can solve brings up to 40t/h by single pass boiler tonnage, can increase again the technical problem of steam quality to 85%.
A kind of large-tonnage subcritical pressure boiler steam generator, it comprises: radiant box will (5), upper convection section (7), upper convection section (6), changeover portion (8), water-water heat exchanger (10), sampling steam-water separator (11), burner (4), feed pump (1), switch board (3), water pipeline (17), fuel line (18), natural gas line (19), pump skid (14), chimney (19), upper convection section tube bank (701), lower convection section tube bank (601), combustion chamber tube bank (501), boiler feedwater inlet (1701), saturation water outlet (1702), described combustion chamber (5) Horizontal type is placed, changeover portion (8) is connected to the rear end of radiant box will (5), lower convection section (6) is connected to the top of changeover portion (8), upper convection section (7) is connected to lower convection section (6) top, chimney is connected to upper convection section (7) top, the combustion chamber of burner (4), radiant box will (5), lower convection section (6), upper convection section (7), chimney (9) are communicated with successively along the heat smoke direction of motion, periphery in the combustion chamber of radiant box will (5) is provided with combustion chamber tube bank (501), the structure of water-water heat exchanger (10) is the left side that the snakelike reciprocation pipe of barrel forms is placed in outside the combustion chamber of radiant box will (5), carries out heat exchange, feedwater enters feed pump (1) from boiler feedwater inlet (1701), be forced into after convenient pressure more successively through water pipeline (17), water-water heat exchanger (10), upper convection section tube bank (701), lower convection section tube bank (601), water-water heat exchanger (10), combustion chamber tube bank (501) through feed pump (1), progressively by heat temperature raising, to saturated vapor outlet (1702), be provided with upper convection section tube bank (701) in described upper convection section (7), structure is the rectangular structure of single finned tube horizontal reciprocating, is positioned at flue gas low-temperature region, be provided with in described lower convection section (6) lower convection section tube bank (601), for single light pipe and finned tube horizontal reciprocating rectangular, be positioned at fume high-temperature region, described radiant box will (5), upper convection section (7), lower convection section (6), feed pump (1), switch board (3) are arranged in whole boiler skid, form the bearing mode of overall skid.
Described combustion chamber (5) is horizontal straight flow structure, and outer surface is rectangular cylinder, and inwall is lined with aluminosilicate refractory fiber; Combustion chamber tube bank (501) is for single loop straight tube is along the body of wall inwall longitudinally snakelike rectangular configuration be back and forth arranged in; Distance between the pipe center line of tube bank (501) and furnace wall is 100mm.
Described burner (4) is communicated with fuel filler (1801) by fuel line (18); Fuel line (18) is provided with oil heater (12) and electric heater (13).
Upper convection section tube bank (701) have employed finned tube in fume side; Lower convection section tube bank (601) arranges light pipe heating surface at fume side arrival end, and rear portion have employed finned tube.
Combustion chamber (5), upper convection section (7), lower convection section (6), feed pump (1) and switch board (3) are connected directly between in the skid of steam generation; Between burner (3) and radiant box will (5), between radiant box will (5) and changeover portion (8), between changeover portion (8) and lower convection section (6), between lower convection section (6) and upper convection section (7), with bolts between chimney (9) and upper convection section (7).
Described switch board (3) is made up of programmable controller and touch-screen, has conventional data teletransmission interface.
The utility model has following advantage and good effect:
1. single loop boiler evaporation capacity is risen to as 40t/h by original 30t/h, avoids the multiloop inclined burning phenomenon of radiation tube bank, saves large number quipments purchase cost;
2. adopt skid formula fixed and arranged.In order to reduce radiant section floor space, thus reduce the entire area at steam injection station, radiant section becomes rectangular configuration from original routine is round;
3. steam quality is promoted to 85% by original 80%, drastically increases heat utilization rate;
4. upper convection section, lower convection section are that double loop is arranged, avoid hot water at convection section overstand, vaporize in advance;
5. boiler thermal output rises to fuel oil >=88%, combustion gas >=90% by original 88%.
6. the automatic control technology of advanced person makes equipment flow and outlet temperature keep constant, and intelligent level is high.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is that schematic diagram is looked on Fig. 1 right side;
Fig. 3 is Fig. 1 schematic top plan view;
Fig. 4 is Fig. 1 schematic rear view;
Fig. 5 is utility model works schematic flow sheet;
Fig. 6 is the utility model radiant box will tube bank schematic diagram;
Fig. 7 is that schematic diagram is looked on Fig. 6 radiant box will tube bank left side;
Fig. 8 is the utility model lower convection section tube bank schematic diagram;
Fig. 9 is that schematic diagram is looked on Fig. 8 lower convection section tube bank left side;
Figure 10 is the utility model upper convection section tube bank schematic diagram;
Figure 11 is that schematic diagram is looked on Figure 10 upper convection section tube bank left side;
Figure 12 is the utility model water-water heat exchanger schematic diagram;
Figure 13 is that schematic diagram is looked on Figure 12 water-water heat exchanger left side;
Figure 14 is Figure 12 water-water heat exchanger schematic top plan view.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
In figure, drawing reference numeral is as follows: plunger displacement pump 1, air blast 2, switch board 3, burner 4, radiant box will 5, lower convection section 6, upper convection section 7, changeover portion 8, chimney 9, water-water heat exchanger 10, sampling steam-water separator 11, oil heater 12, electric heater 13, plunger displacement pump skid 14, air channel 15, muffler 16, pipeline 17, fuel line 18, natural gas line 19, platform ladder 20, 501 radiant box will tube banks 501, lower convection section tube bank 601, upper convection section tube bank 701, boiler feedwater inlet 1701, steam (vapor) outlet 1702, drain 1703, steam security valve floss hole 1704, oil-in 1801, oil return opening 1802, fuel gas inlet 1901, cold water inlet 1001, cooling water outlet 1002, hot water inlet 1003, hot water outlet 1004.
Uphole steam generator refers to: for heat extraction by steam injection and custom-designed a kind of Novel DC Industrial Boiler.
As shown in Figure 1,2,3, 4: described steam generator, it comprises: plunger displacement pump 1, air blast 2, switch board 3, burner 4, radiant box will 5, lower convection section 6, upper convection section 7, changeover portion 8, chimney 9, water-water heat exchanger 10, sampling steam-water separator 11, oil heater 12, electric heater 13, plunger displacement pump skid 14, air channel 15, muffler 16, pipeline 17, fuel line 18, natural gas line 19, platform ladder 20; Affiliated radiant box will 5 Horizontal type is placed.Burner, radiant box will, changeover portion, lower convection section, upper convection section, chimney are communicated with successively along the heat smoke direction of motion; Changeover portion 8 connects radiant box will 5 rear end, and lower convection section 6 is located at the top of changeover portion 8, and bolt connects; Upper convection section 7 is located at the top of lower convection section 6, and water-water heat exchanger 10 is the left side side that the structure of the snakelike reciprocation pipe of barrel forms is placed in radiant box will 5 outside, carries out heat exchange.Feedwater enters from feed-water intake 1701 after feed pump pressurization, successively through water pipeline 17, water-water heat exchanger 10 (shell side), upper convection section tube bank 701, lower convection section tube bank 601, water-water heat exchanger 10 (tube side), radiant box will tube bank 501 to steam (vapor) outlet 1702, progressively heat vaporized, export qualified saturated vapor.It is the steam generator that the special large-scale fixing horizontal direct current in a kind of oil field produces saturated moist steam.
It also comprises: air blast 2, muffler 16, wind channel 15, switch board 3.Air blast 2, be positioned over steam generation ground right side prize block separately, be connected 4 with wind channel 15 with burner and blow to boiler; Muffler 16 is installed on air blast 12 air intake vent; For reducing vibrations, switch board 3 is bolted the leading portion being placed on radiant box will 5 and also prizes block separately.
It also comprises: fuel inlet 1801, electric heater 13, oil heater 12, Imported gas 1901, and burner 4 is communicated with Imported gas 1901 and oil-in 1801.
See Fig. 6,7.Described radiant box will 5 is horizontal straight flow structure, and shell body is steel rectangle, and for ensureing to reduce radiation loss, when steam generator normally runs, housing outer surface mean temperature is lower than 60 DEG C.Both sides and top inwall are lined with aluminosilicate refractory fiber; End wall cast is with concrete refractory matter, and tail end connects changeover portion 8.Burner hearth tube bank 501 is for single loop straight tube is along the burner hearth body of wall inwall longitudinally snakelike rectangular configuration that is arranged into; The tube bank pipe center line of 501 and the distance of furnace wall are 100mm.Radiant box will 5 outlet steam (vapor) outlet 1701.Described changeover portion 8 is the arcuate structures rolled by steel plate, liner castable refractory and alumina silicate fibre, and during normal operation, outer wall surface mean temperature is less than 60 DEG C.Be provided with discharge outlet bottom it, enter trench or access blowdown gathering tube by butterfly valve.Rear portion is provided with the manhole of easy access, and manhole cover is provided with the peephole observing furnace flame.
See Figure 10,11.The trapezium structure that the tube bank 701 of described upper convection section 7 is made up of single finned tube horizontal reciprocating, is positioned at flue gas low-temperature region.
See Fig. 8,9.The rectangular configuration that the tube bank 601 of described lower convection section 6 is made up of the single finned tube horizontal reciprocating of upper a few row connects to descend the light pipe horizontal reciprocating of a few row to form, and is positioned at fume high-temperature region.
See Figure 12,13,14.Boiler feedwater enters the cold water inlet 1001 of water-water heat exchanger 10 through feed-water intake 1701, flowed out by cooling water outlet 1002, enter upper convection section tube bank 701, hot water after restraining 701 preheatings by upper convection section enters lower convection section tube bank 601, entered by the hot water inlet 1003 of water-water heat exchanger 10 by the hot water after lower convection section tube bank 601 again heating, flowed out by hot water outlet 1004, enter radiant box will tube bank 501, cold water flows in the shell side of sleeve pipe, hot water flows round about in the tube side of sleeve pipe, carries out countercurrent heat-transfer.
It also comprises switch board 3.Switch board 3 is made up of programmable controller and touch-screen.
By regulating the feedwater of boiler, ensure that steam (vapor) outlet 1701 output pressure is not more than the wet saturated steam that 17.2MPa mass dryness fraction is not more than 85%.
This steam generator is summarised as: five parts, i.e. radiant box will 5, water-water-to-water heat exchanger 10, changeover portion 8, lower convection section 6, upper convection section 7; Three systems, i.e. water-steam systems; Combustion system, robot control system(RCS); Combustion system comprises again: burner 4, fuel line 18, natural gas line 19.
Described water-steam system: refer to from the vapor channel between feed-water intake 1701 to steam (vapor) outlet 1702, the flow system be made up of water-water heat exchanger 10, radiant box will tube bank 501, upper convection section tube bank 701, lower convection section tube bank 601, sampling steam-water separator 11 and its scope gut line 17, as shown in flow chart Fig. 5, it is main pressurized assembly of the present utility model.Feedwater enters the cold water inlet 1001 of water-water heat exchanger 10 through feed-water intake 1701, flowed out by cooling water outlet 1002, enter upper convection section tube bank 701, enter after restraining 701 preheatings by upper convection section lower convection section 601 heat after hot water entered by the hot water inlet 1003 of water-water heat exchanger 10, flowed out by hot water outlet 1004, enter burner hearth tube bank 501 and continue heating, then flow out from burner hearth tube bank 501, produce under saturated vapor arrives the last Injection Well of steam (vapor) outlet 1702 via pipeline 17.
Described combustion system: be made up of burner 4, fuel line 18, natural gas line 19 etc.
Described robot control system(RCS): comprise switch board 3, is made up of programmable controller and touch-screen.
The utility model important technological parameters:
1. model: YZG40-17.2-D
2. rated capacity: 40t/h
3. operating pressure: 17.2MPa
4. steam quality :≤85%
5. the thermal efficiency: fuel oil >=88%, combustion gas >=90%
6. fuel: crude oil, natural gas
7. control mode: PAC
8. bearing mode: skid
Claims (6)
1. a large-tonnage subcritical pressure boiler steam generator, it comprises: radiant box will (5), upper convection section (7), upper convection section (6), changeover portion (8), water-water heat exchanger (10), sampling steam-water separator (11), burner (4), feed pump (1), switch board (3), water pipeline (17), fuel line (18), natural gas line (19), pump skid (14), chimney (19), upper convection section tube bank (701), lower convection section tube bank (601), combustion chamber tube bank (501), boiler feedwater inlet (1701), saturation water outlet (1702), it is characterized in that: described combustion chamber (5) Horizontal type is placed, changeover portion (8) is connected to the rear end of radiant box will (5), lower convection section (6) is connected to the top of changeover portion (8), upper convection section (7) is connected to lower convection section (6) top, chimney is connected to upper convection section (7) top, the combustion chamber of burner (4), radiant box will (5), lower convection section (6), upper convection section (7), chimney (9) are communicated with successively along the heat smoke direction of motion, periphery in the combustion chamber of radiant box will (5) is provided with combustion chamber tube bank (501), the structure of water-water heat exchanger (10) is the left side that the snakelike reciprocation pipe of barrel forms is placed in outside the combustion chamber of radiant box will (5), carries out heat exchange, feedwater enters feed pump (1) from boiler feedwater inlet (1701), be forced into after convenient pressure more successively through water pipeline (17), water-water heat exchanger (10), upper convection section tube bank (701), lower convection section tube bank (601), water-water heat exchanger (10), combustion chamber tube bank (501) through feed pump (1), progressively by heat temperature raising, to saturated vapor outlet (1702), be provided with upper convection section tube bank (701) in described upper convection section (7), structure is the rectangular structure of single finned tube horizontal reciprocating, is positioned at flue gas low-temperature region, be provided with in described lower convection section (6) lower convection section tube bank (601), for single light pipe and finned tube horizontal reciprocating rectangular, be positioned at fume high-temperature region, described radiant box will (5), upper convection section (7), lower convection section (6), feed pump (1), switch board (3) are arranged in whole boiler skid, form the bearing mode of overall skid.
2. large-tonnage subcritical pressure boiler steam generator according to claim 1, is characterized in that: described combustion chamber (5) is horizontal straight flow structure, and outer surface is rectangular cylinder, and inwall is lined with aluminosilicate refractory fiber; Combustion chamber tube bank (501) is for single loop straight tube is along the body of wall inwall longitudinally snakelike rectangular configuration be back and forth arranged in; Distance between the pipe center line of tube bank (501) and furnace wall is 100mm.
3. large-tonnage subcritical pressure boiler steam generator according to claim 1, is characterized in that: described burner (4) is communicated with fuel filler (1801) by fuel line (18); Fuel line (18) is provided with oil heater (12) and electric heater (13).
4. large-tonnage subcritical pressure boiler steam generator according to claim 1, is characterized in that: upper convection section tube bank (701) have employed finned tube in fume side; Lower convection section tube bank (601) arranges light pipe heating surface at fume side arrival end, and rear portion have employed finned tube.
5. large-tonnage subcritical pressure boiler steam generator according to claim 1, is characterized in that: combustion chamber (5), upper convection section (7), lower convection section (6), feed pump (1) and switch board (3) are connected directly between in the skid of steam generation; Between burner (3) and radiant box will (5), between radiant box will (5) and changeover portion (8), between changeover portion (8) and lower convection section (6), between lower convection section (6) and upper convection section (7), with bolts between chimney (9) and upper convection section (7).
6. large-tonnage subcritical pressure boiler steam generator according to claim 1, is characterized in that: described switch board (3) is made up of programmable controller and touch-screen, has conventional data teletransmission interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506410.9U CN204127933U (en) | 2014-09-04 | 2014-09-04 | Large-tonnage subcritical pressure boiler steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506410.9U CN204127933U (en) | 2014-09-04 | 2014-09-04 | Large-tonnage subcritical pressure boiler steam generator |
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| Publication Number | Publication Date |
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| CN204127933U true CN204127933U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420506410.9U Withdrawn - After Issue CN204127933U (en) | 2014-09-04 | 2014-09-04 | Large-tonnage subcritical pressure boiler steam generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180359A (en) * | 2014-09-04 | 2014-12-03 | 中国石油天然气第八建设有限公司 | Large-tonnage subcritical pressure steam generator |
-
2014
- 2014-09-04 CN CN201420506410.9U patent/CN204127933U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180359A (en) * | 2014-09-04 | 2014-12-03 | 中国石油天然气第八建设有限公司 | Large-tonnage subcritical pressure steam generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150128 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |