CN103147808B - Pressure-drop screw expansion power generation device with pressure stabilization function - Google Patents
Pressure-drop screw expansion power generation device with pressure stabilization function Download PDFInfo
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- CN103147808B CN103147808B CN201310084595.9A CN201310084595A CN103147808B CN 103147808 B CN103147808 B CN 103147808B CN 201310084595 A CN201310084595 A CN 201310084595A CN 103147808 B CN103147808 B CN 103147808B
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- 238000010248 power generation Methods 0.000 title abstract description 6
- 230000006641 stabilisation Effects 0.000 title abstract 3
- 238000011105 stabilization Methods 0.000 title abstract 3
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 7
- 239000002918 waste heat Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The invention provides a pressure-drop screw expansion power generation device with a pressure stabilization function, which comprises a first hand stop valve (1), wherein an output end of the first hand stop valve (1) is connected with a first electric stop valve (2); an output end of the first electric stop valve (2) is connected with a vortex shedding flowmeter (3); an output end of the vortex shedding flowmeter (3) is connected with a filter (4), a first expansion joint (5) and a second expansion joint (6) sequentially; an output end of the second expansion joint (6) is connected a first pneumatic quick closing valve (7) and a first pneumatic control valve (8) sequentially; a screw expansion machine (9) is mounted at an output end of the first pneumatic control valve (8); an output end of the screw expansion machine (9) is connected with a second electric stop valve (10); the screw expansion machine (9) is connected with a speed reducer (11); and a power generator (12) is mounted at an output end of the speed reducer (11). According to the pressure-drop screw expansion power generation device, a pressure stabilization passage is mounted at the output end of the screw expansion machine, so that power machine outlet steam parameters can achieve linkage after the passage valves and the screw expansion machine act, the power machine outlet steam pressure is stabilized, and the production safety is improved.
Description
Technical field
The present invention relates to a kind of electricity generating device, particularly relate to the device utilizing low-quality steam waste heat to generate electricity, specifically just relate to a kind of pressure-decreasing type screw expansion generating set with pressure holding function.
Background technique
In the industrial production, waste heat energy ubiquity.The blast furnace gas of metallurgical iron industry, blast furnace gasification cooling water; The afterheat steam of the industrial heating furnace generation of the hot-rolled process such as wire rod, bar, thin plate, slab of iron and steel enterprise and open hearth gasification cooling water; The catalysis of petrochemical industry oil refining apparatus, cracking, coking cooling water; Roasting in chemical industry gas washing in SA production, burn sulphur operation, and all there is a large amount of waste heats in the flue gas etc. that various Industrial Stoves kiln hood and kiln tail produce.
The classification of these waste heat energy does not have clear and definite standard.Usually the waste heat energy is divided into high temperature, middle temperature, low temperature three class.Temperature is the high temperature energy more than 650 DEG C, and temperature is the middle temperature energy between 230 DEG C ~ 650 DEG C, and temperature is low-temperature energy sources below 230 DEG C.Temperature below 160 DEG C, wet vapor, thermal source disperses, and its pressure is not high and fluctuation is larger belongs to the low-quality energy.In existing technology, the waste of high-grade energy is limited, and majority can reclaim preferably and utilize.What waste in a large number is then the low-quality energy, accounts for the 70-80% always wasted energy, even more.Therefore urgently exploitation can reclaim the device for generating power by waste heat of this type of low-quality energy.
What Chinese patent 200920207915.4 disclosed a kind of pure cryogenic low pressure utilizes low-quality steam waste heat electricity generating device, and it adopts screw expansion motor.Steam is introduced into machine inner screw teeth groove, and lead-screw rotates, and along with bolt rotary, teeth groove rotates also lengthening gradually, volume increases, and medium step-down cooling expansion work, discharges from teeth groove.Power exports from driving screw axle, drives electrical power generators.Screw power machine is the power engine of positive displacement working principle, and except leakage loss, little unknown losses, mechanical efficiency is higher, even if medium parameter or load change still can keep high efficiency.The dispersion of low-quality afterheat steam thermal source can be overcome, the not high and fluctuation defect such as larger of pressure.Because of low-quality afterheat steam thermal source dispersion, its pressure is not high and fluctuation causes more greatly generator requirement higher, and adopt TZHW3 type no-brush synchronous generator, its structure is brushless excitation structure.No-brush synchronous generator is made up of main generator, AC exciter, rotating rectifier, automatic voltage regulator etc.Drive end has the flange spigot and mounting hole that dock with power engine, axle is equipped with stacked elastic coupling flexible coupling, can directly and power engine abutting joint.There is the features such as regulation precision is high, dynamic performance good and volume is little, lightweight, installation and maintenance are simple, reliable.Controller major control screw expander air intake valve and decompressor lubrication system, be furnished with programmable controller and display screen, the each valve state of display screen Dynamic Announce, screw expander inlet steam flow, gateway vapor pressure and temperature, decompressor rotating speed etc.Control system can realize Non-follow control and automatically control, and when power load reduces, manually adjusts generated energy.Generator control part is mainly incorporated into the power networks cabinet, configures different voltage regulators according to consumer networks waveform situation, and ensure that electricity that generator sends all is sent into electrical network and do not affected electrical network and normally run, the harmonic wave of electrical network does not affect the normal operation of generator.Control system has voltage display, electric current display, power display, power factor display etc.Cogeneration is carried out in mass-energy source, and electric power is sent into electrical network, and the energy of waste is utilized again.But after this electricity generating device screw expander acting, electrodynamic machines outlet vapor pressure is stable not, easily produces security incident.
Summary of the invention
Steam waste heat electricity generating device is utilized for existing, the technological deficiency of the vapor pressure instability of power engine outlet after screw expander acting, a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function provided by the invention, power engine outlet vapor parameter after each path valve and screw expander are done work realizes linking, stabilize power engine outlet vapor pressure, strengthen the Security of producing.
Technological scheme
In order to solve above-mentioned technical barrier, the present invention designs a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function, it comprises the first hand stop valve, first hand stop valve output terminal is connected with the first Electric Actuated Stop Valves, first Electric Actuated Stop Valves output terminal is connected with vortex-shedding meter, vortex-shedding meter output terminal is connected with filter in turn, first expansion joint and the second expansion joint, the output terminal of the second expansion joint is connected with pneumatic fast valve and the first pneumatic control valve in turn, screw expander is contained in the output terminal of the first pneumatic control valve, screw expander output terminal is connected with the second Electric Actuated Stop Valves, screw expander is also connected with speed reducer, the output terminal of speed reducer is equipped with generator, it is characterized in that:
The output terminal of described second Electric Actuated Stop Valves is connected with two branch roads, article one, branch road connects back the output terminal of the first expansion joint, this branch road is equipped with successively the second hand stop valve, the second pneumatic control valve and pneumatic quick opening valve, another article of branch road is equipped with successively the first pressure transmitter, safety valve, the first temperature transmitter, the first temperature gauge outfit, the first pressure gauge outfit, the first drain valve, one-way valve and the 3rd hand stop valve.
Described first hand stop valve input end gas receiving tube.
Steam warm tube valve is equipped with at described first Electric Actuated Stop Valves two ends, the output pipe of the first Electric Actuated Stop Valves is equipped with pressure gauge and the second temperature gauge outfit.
Described vortex-shedding meter is parallel with the first by-pass switch valve, and vortex-shedding meter output terminal and input end are equipped with the second by-pass switch valve and the 3rd by-pass switch valve respectively.
Described second expansion joint output terminal is equipped with the second drain valve, and the second drain valve is connected with by-pass switch valve.
Described first pneumatic control valve output terminal pipeline is equipped with the second temperature transmitter, the 3rd temperature transmitter and the second pressure gauge outfit successively.
The output terminal of described screw expander is equipped with the 3rd pressure gauge outfit.
Described 3rd hand stop valve output terminal gas receiving tube.
Beneficial effect
The present invention stablizes path at screw expander output terminal setting pressure, and the power engine outlet vapor parameter after each path valve and screw expander are done work realizes linking, and stabilizes power engine outlet vapor pressure, strengthens the Security of producing.
Accompanying drawing explanation
Accompanying drawing 1 is installation connection diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment
As shown in Figure 1, a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function, it comprises the first hand stop valve 1, first hand stop valve 1 output terminal is connected with the first Electric Actuated Stop Valves 2, first Electric Actuated Stop Valves 2 output terminal is connected with vortex-shedding meter 3, vortex-shedding meter 3 output terminal is connected with filter 4 in turn, first expansion joint 5 and the second expansion joint 6, the output terminal of the second expansion joint 6 is connected with pneumatic fast valve 7 and the first pneumatic control valve 8 in turn, screw expander 9 is contained in the output terminal of the first pneumatic control valve 8, screw expander 9 output terminal is connected with the second Electric Actuated Stop Valves 10, screw expander 9 is also connected with speed reducer 11, the output terminal of speed reducer 11 is equipped with generator 12, wherein,
The output terminal of described second Electric Actuated Stop Valves 10 is connected with two branch roads, article one, branch road connects back the output terminal of the first expansion joint 5, this branch road is equipped with successively the second hand stop valve 13, second pneumatic control valve 14 and pneumatic quick opening valve 15, another article of branch road is equipped with successively the first pressure transmitter 16, safety valve 17, first temperature transmitter 18, first temperature gauge outfit 19, first pressure gauge outfit 20, first drain valve 21, one-way valve 22 and the 3rd hand stop valve 23.
Described first hand stop valve 1 input end gas receiving tube.
The output pipe that steam warm tube valve 201, first Electric Actuated Stop Valves 2 is equipped with at described first Electric Actuated Stop Valves 2 two ends is equipped with pressure gauge 202 and the second temperature gauge outfit 203.
Described vortex-shedding meter 3 is parallel with the first by-pass switch valve 301, and vortex-shedding meter 3 output terminal and input end are equipped with the second by-pass switch valve 302 and the 3rd by-pass switch valve 303 respectively.
Described second expansion joint 6 output terminal is equipped with the second drain valve 601, second drain valve 601 and is connected with by-pass switch valve 601a.
The second temperature transmitter 801, the 3rd temperature transmitter 802 and the second pressure gauge outfit 803 described first pneumatic control valve 8 output terminal pipeline be equipped with successively.
The output terminal of described screw expander 9 is equipped with the 3rd pressure gauge outfit 901.
Described 3rd hand stop valve 23 output terminal gas receiving tube.
Steam is by the first hand stop valve 1, enter generating pipe-line system, vortex-shedding meter 3 is as traffic monitoring equipment, ensure the steam flow entering power generation system, SC sigmal control first Electric Actuated Stop Valves 2 of its feedback regulates aperture, and steam is by metre filter 4, enter pneumatic fast valve 7 and the first pneumatic control valve 8, by the adjustment of two valves, steam enters screw expander 9 and does work, and the power that screw expander 9 provides is generated electricity by drive electrical generators 12 after speed reducer 11 speed governing.After screw expander 9 does work, steam is by discharging power generation system after the second Electric Actuated Stop Valves 10, enters original steam line.Whole power generation process not only ensures the stability of generated output, and after also ensureing screw expander acting, steam parameter is stablized.Safety valve 17 Main Function is pressure release effect when vapor pressure is too high after screw expander 9 does work, and one-way valve 22 prevents steam counter-flow,
The present invention stablizes path at screw expander output terminal setting pressure, and the power engine outlet vapor parameter after each path valve and screw expander are done work realizes linking, and stabilizes power engine outlet vapor pressure, strengthens the Security of producing.
Claims (6)
1. one kind has the pressure-decreasing type screw expansion generating set of voltage stabilizing function, it comprises the first hand stop valve (1), first hand stop valve (1) output terminal is connected with the first Electric Actuated Stop Valves (2), first Electric Actuated Stop Valves (2) output terminal is connected with vortex-shedding meter (3), vortex-shedding meter (3) output terminal is connected with filter (4) in turn, first expansion joint (5) and the second expansion joint (6), the output terminal of the second expansion joint (6) is connected with pneumatic fast valve (7) and the first pneumatic control valve (8) in turn, screw expander (9) is contained in the output terminal of the first pneumatic control valve (8), screw expander (9) output terminal is connected with the second Electric Actuated Stop Valves (10), screw expander (9) is also connected with speed reducer (11), the output terminal of speed reducer (11) is equipped with generator (12), it is characterized in that:
The output terminal of described second Electric Actuated Stop Valves (10) is connected with two branch roads, article one, branch road connects back the output terminal of the first expansion joint (5), the second hand stop valve (13) this branch road is equipped with successively, second pneumatic control valve (14) and pneumatic quick opening valve (15), the first pressure transmitter (16) another branch road is equipped with successively, safety valve (17), first temperature transmitter (18), first temperature gauge outfit (19), first pressure gauge outfit (20), first drain valve (21), one-way valve (22) and the 3rd hand stop valve (23),
Described first hand stop valve (1) input end gas receiving tube;
Described 3rd hand stop valve (23) output terminal gas receiving tube.
2. a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function as claimed in claim 1, it is characterized in that: steam warm tube valve (201) is equipped with at described first Electric Actuated Stop Valves (2) two ends, the output pipe of the first Electric Actuated Stop Valves (2) is equipped with pressure gauge (202) and the second temperature gauge outfit (203).
3. a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function as claimed in claim 1, it is characterized in that: described vortex-shedding meter (3) is parallel with the first by-pass switch valve (301), vortex-shedding meter (3) output terminal and input end are equipped with the second by-pass switch valve (302) and the 3rd by-pass switch valve (303) respectively.
4. a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function as claimed in claim 1, it is characterized in that: described second expansion joint (6) output terminal is equipped with the second drain valve (601), and the second drain valve (601) is connected with by-pass switch valve (601a).
5. a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function as claimed in claim 1, is characterized in that: described first pneumatic control valve (8) output terminal pipeline is equipped with successively the second temperature transmitter (801), the 3rd temperature transmitter (802) and the second pressure gauge outfit (803).
6. a kind of pressure-decreasing type screw expansion generating set with voltage stabilizing function as claimed in claim 1, is characterized in that: the output terminal of described screw expander (9) is equipped with the 3rd pressure gauge outfit (901).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310084595.9A CN103147808B (en) | 2013-03-15 | 2013-03-15 | Pressure-drop screw expansion power generation device with pressure stabilization function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310084595.9A CN103147808B (en) | 2013-03-15 | 2013-03-15 | Pressure-drop screw expansion power generation device with pressure stabilization function |
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| CN103147808A CN103147808A (en) | 2013-06-12 |
| CN103147808B true CN103147808B (en) | 2015-07-01 |
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| CN110017184B (en) * | 2019-04-01 | 2024-02-27 | 华电电力科学研究院有限公司 | Distributed residual pressure power generation system based on reinforcement learning algorithm and control method thereof |
| CN110118106A (en) * | 2019-04-18 | 2019-08-13 | 华电电力科学研究院有限公司 | A kind of distributed top pressure power generation system and working method based on efficient radial turbines |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560978A (en) * | 2008-04-14 | 2009-10-21 | 株式会社神户制钢所 | Vapor expander driven air compressor |
| CN201771561U (en) * | 2009-08-14 | 2011-03-23 | 上海西重所重型机械成套有限公司 | Pure low-temperature low-pressure waste heat generating device utilizing low-quality vapor |
| CN201874629U (en) * | 2010-04-12 | 2011-06-22 | 杜海燕 | Throttled heat energy recycling system |
| CN203114362U (en) * | 2013-03-15 | 2013-08-07 | 上海西重所重型机械成套有限公司 | Pressure-drop-type screw expansion power generation device with voltage stabilization function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030213246A1 (en) * | 2002-05-15 | 2003-11-20 | Coll John Gordon | Process and device for controlling the thermal and electrical output of integrated micro combined heat and power generation systems |
| US9091182B2 (en) * | 2010-12-20 | 2015-07-28 | Invensys Systems, Inc. | Feedwater heater control system for improved rankine cycle power plant efficiency |
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- 2013-03-15 CN CN201310084595.9A patent/CN103147808B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560978A (en) * | 2008-04-14 | 2009-10-21 | 株式会社神户制钢所 | Vapor expander driven air compressor |
| CN201771561U (en) * | 2009-08-14 | 2011-03-23 | 上海西重所重型机械成套有限公司 | Pure low-temperature low-pressure waste heat generating device utilizing low-quality vapor |
| CN201874629U (en) * | 2010-04-12 | 2011-06-22 | 杜海燕 | Throttled heat energy recycling system |
| CN203114362U (en) * | 2013-03-15 | 2013-08-07 | 上海西重所重型机械成套有限公司 | Pressure-drop-type screw expansion power generation device with voltage stabilization function |
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