CN215486673U - Steam-electricity different-side coaxial-driven blower unit - Google Patents
Steam-electricity different-side coaxial-driven blower unit Download PDFInfo
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- CN215486673U CN215486673U CN202120692842.3U CN202120692842U CN215486673U CN 215486673 U CN215486673 U CN 215486673U CN 202120692842 U CN202120692842 U CN 202120692842U CN 215486673 U CN215486673 U CN 215486673U
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Abstract
The utility model discloses a steam-electricity different-side coaxial driving blower unit, which comprises a steam turbine, a first overrunning clutch, a blower, a second overrunning clutch, a speed increaser and a medium-voltage variable frequency motor, wherein the steam turbine, the first overrunning clutch, the blower, the second overrunning clutch, the speed increaser and the medium-voltage variable frequency motor are sequentially connected along the axial direction; and a steam inlet of the steam turbine is connected with a pipeline of byproduct steam of the copper smelting system, the steam turbine is controlled by a steam turbine control system, and the medium-voltage variable-frequency motor is controlled by a medium-voltage variable-frequency control system. The unit has the advantages of flexible and convenient switching of the operation modes and speed change adjustment, adaptability to the working condition change of the copper smelting production process, good process matching, safety, reliability, high energy efficiency and good economic benefit, simplifies the energy conversion process, avoids power loss caused by throttling regulation and potential risk of same-side arrangement of steam and electricity, and effectively improves the energy utilization rate of the copper smelting production process.
Description
Technical Field
The utility model relates to the field of power machinery, in particular to a steam-electricity different-side coaxial driving blower unit.
Background
The power source required by modern process industry can not be separated from steam and electric power, the energy conversion process taking electric power as the power source is chemical energy → heat energy → mechanical energy → electric energy → mechanical energy to drive the mechanical pump, and the steam as the power source and passing through a steam turbine only needs chemical energy → heat energy → mechanical energy to drive the mechanical pump, so that the energy loss is avoided, the energy utilization rate is improved, and the energy conversion times and engineering steps are reduced. At present, oxygen-enriched efficient smelting is generally applied to the copper smelting industry, process equipment tends to be large-sized, a production process is evolved firstly, and a new energy recycling technology is continuously developed and influenced by engineering and production factors such as process matching, machine pump decentralized arrangement, system load fluctuation, starting and stopping working conditions and the like. With the vigorous promotion of energy conservation, emission reduction and green manufacturing, copper concentrate smelting enterprises are compelling to develop the development level of the traditional industry, and at present, the steam-electric double-drive pump devices developed in the power industry and the steel industry commonly have the problems that a motor bearing is not abraded or damaged due to the fact that a motor is driven to rotate when a steam turbine works at full load, and the hidden trouble that a machine set needs to be stopped to process a motor body fault exists, so that the machine set configuration is difficult to meet the production continuity and environmental risk control requirements of a copper smelting process. Therefore, developing an efficient energy-saving technology which is suitable for the requirement of a copper smelting production process aiming at steam generated in a copper concentrate smelting process becomes one of the key topics of saving energy, reducing consumption, improving economic benefit and practicing a green development concept for copper smelting enterprises.
Disclosure of Invention
Aiming at the defects of the existing copper smelting process energy utilization and energy-saving technology, the utility model aims to provide a steam-electricity different-side coaxial drive blower unit based on copper smelting steam utilization according to the requirement of copper smelting equipment and process matching, which can stably and flexibly adapt to the change of working conditions of the copper smelting production process, realize the switching of unit operation modes and variable speed regulation, and solve the problems of energy loss caused by that the byproduct steam of a smelting system in the copper smelting industry is only used for steam turbine power generation and power loss caused by that the electric drive of a high-power blower is throttled and regulated by a hydraulic coupler or an inlet guide vane.
The technical scheme adopted by the utility model is as follows:
the utility model provides a coaxial driven blower unit of vapour electricity heterodromous, the unit includes steam turbine (1), first freewheel clutch (2), air-blower (3), second freewheel clutch (4), speed-increasing gear (5), middling pressure inverter motor (6), exhaust block valve (7), bypass valve (8), steam turbine control system (9), middling pressure inverter control system (10). The steam turbine (1), the first overrunning clutch (2), the air blower (3), the second overrunning clutch (4), the speed increaser (5) and the medium-voltage variable frequency motor (6) are coaxially arranged in parallel; a steam inlet of the steam turbine (1) is connected with a pipeline of byproduct steam of the copper smelting system; the steam inlet of the steam turbine (1) is also connected with a steam branch, a temperature and pressure reducer and a bypass valve (8) are arranged on the steam branch, and an exhaust port of the steam branch is connected with a steam outlet of the steam turbine (1). The steam outlet of steam turbine (1) is connected with exhaust block valve (7), the exhaust block valve effect is closed when the steam turbine stops or overhauls in order to guarantee that the air cooling island maintains the vacuum state, steam turbine (1) is controlled by steam turbine control system (9), middling pressure inverter motor (6) are controlled by middling pressure inverter control system (10).
Further, the output shaft of steam turbine (1) and first freewheel clutch (2) input shaft, the output shaft of first freewheel clutch (2) is connected with the one end of air-blower (3) main shaft, the other end of air-blower (3) main shaft is connected with the output shaft of second freewheel clutch (4), the input shaft of second freewheel clutch (4) and the output shaft of speed-increasing machine (5), the input shaft of speed-increasing machine (5) and the output shaft of middling pressure inverter motor (6) are connected.
Further, the blower (3) is of a double-shaft extension structure.
Further, the steam turbine (1) is a condensing industrial dragging steam turbine.
The drive source of air-blower (3) includes steam turbine (1) and the middling pressure inverter motor (6) that uses electric power as the power supply that uses copper smelting by-product steam as the power supply, the drive mode conversion of vapour electricity heteropleural coaxial drive air-blower (3) is accomplished through setting up first freewheel clutch (2) and second freewheel clutch (4) at air-blower (3) both sides coaxial coupling.
The steam used by the steam turbine (1) comprises medium-pressure saturated steam, medium-pressure superheated steam and low-pressure superheated steam which are byproducts in the copper smelting and acid making processes.
The blower unit can be used for copper smelting air supply blower units, sulfur dioxide blower units in acid making procedures or air distribution blower units.
The utility model has the beneficial effects that:
the copper smelting process is characterized in that medium and low pressure steam which is a byproduct in the copper smelting process is used as a power source, a steam turbine is used for directly driving a high-power blower (single machine power N is more than or equal to 750KW) in the process, a variable frequency motor is coaxially configured according to the requirements of production process continuity and environmental risk control, the steam turbine → a first overrunning clutch → the blower ← a second overrunning clutch ← a speed increaser ← a medium-pressure variable frequency motor is arranged in parallel with a shaft system, the unit can be switched among three operation modes of electric drive, steam-electric combined drive and steam drive according to different working conditions, and the operation control is flexible and stable. When the steam turbine operates, the heat energy of the medium-pressure saturated steam or the medium-pressure superheated steam or the low-pressure superheated steam is directly converted into mechanical energy without the conversion of secondary electric energy; when the variable frequency motor operates, the power loss caused by variable speed adjustment of a hydraulic coupler or throttling adjustment of inlet guide vanes is avoided, when the steam turbine operates at full load, the second overrunning clutch is disengaged, the series problems that motor bearings arranged on the same side cannot be abraded and motor fault treatment affects unit operation are avoided, and the safety and the stability of a unit shafting are improved; the arrangement of the branch line with the temperature and pressure reducing steam can avoid the loss of condensed water caused by steam evacuation in the starting preparation and shutdown processes. The unit has the advantages of good process matching, safety, reliability, high energy efficiency and good economic benefit, can adapt to various working condition changes in the copper smelting production process, and effectively improves the energy utilization rate in the copper smelting production process.
Drawings
Fig. 1 is a schematic view of the configuration of a blower unit according to the present invention. The system comprises a steam turbine 1, a steam turbine 2, a first overrunning clutch 3, a blower 4, a second overrunning clutch 5, a speed increaser 6, a medium-voltage variable frequency motor 7, a steam exhaust closing valve 8, a bypass valve 9, a steam turbine control system 10 and a medium-voltage variable frequency control system.
Detailed Description
The present invention is described in detail below with reference to examples and the accompanying drawings.
Referring to fig. 1, a steam-electricity opposite-side coaxial driving blower unit comprises a steam turbine 1, a first overrunning clutch 2, a blower 3, a second overrunning clutch 4, a speed increaser 5 and a medium-voltage variable frequency motor 6 which are sequentially arranged along an axial direction; the steam inlet of steam turbine (1) and the pipe connection of copper smelting system byproduct steam, steam turbine 1 is controlled by steam turbine control system 9, middling pressure inverter motor 6 is controlled by middling pressure inverter control system 10, and air-blower 3 adopts the biax to stretch the structure, and concrete connected mode is as follows:
an output shaft of the steam turbine 1 is connected with an input shaft of a first overrunning clutch 2, an output shaft of the first overrunning clutch 2 is connected with one end of a main shaft of the air blower 3, the other end of the main shaft of the air blower 3 is connected with an output shaft of a second overrunning clutch 4, an input shaft of the second overrunning clutch 4 is connected with an output shaft of the speed increaser 5, and an input shaft of the speed increaser 5 is connected with an output shaft of the medium-voltage variable frequency motor 6.
The steam turbine 1 is a condensing industrial dragging steam turbine, a steam outlet of the steam turbine 1 is connected with a steam exhaust isolating valve 7, a steam inlet of the steam turbine 1 is further connected with a steam branch, a temperature and pressure reducing device and a bypass valve 8 are arranged on the steam branch, and a steam branch exhaust port is connected with a steam outlet of the steam turbine 1. And the exhaust steam of the steam branch and the exhaust steam of the steam turbine 1 are merged into an air cooling island condensing system to recover condensed water.
The steam used by the steam turbine 1 comprises medium-pressure saturated steam, medium-pressure superheated steam and low-pressure superheated steam which are byproducts in the copper smelting and acid making processes.
The working engineering of the steam-electricity different-side coaxial driving blower unit based on the utilization of the copper smelting steam is as follows:
an original driving stage: the medium-voltage variable-frequency control system 10 is put into operation, the medium-voltage variable-frequency motor 6 is started, the output rotating speed of the medium-voltage variable-frequency motor 6 is adjusted to the rotating speed required by the driving of the air blower 3 through the speed increaser 5, the air blower 3 is driven by the medium-voltage variable-frequency motor 6 through electric power, the first overrunning clutch 2 is in a disengaged state at the moment, and the steam turbine 1 does not work.
Electric drive mode: when the steam turbine 1 normally operates, if the copper smelting system is in emergency stop or steam can not meet the operation requirement of the steam turbine 1 or the rotating speed of the air blower 3 is controlled to be lower than the adjustable rotating speed of the steam turbine 1 or the steam turbine 1 breaks down, the rotating speed of the air blower 3 is adjusted under the driving of the medium-voltage variable frequency motor 6, so that the second overrunning clutch 4 is meshed, the rotating speed of the steam turbine 1 is synchronously reduced until the first overrunning clutch 2 is disengaged, and the air blower 3 is driven by the medium-voltage variable frequency motor 6 alone.
And (3) a steam-electricity combined driving mode: the air blower 3 is operated in an electric drive mode, when the copper smelting byproduct steam parameters meet the impulse condition of the steam turbine 1, the steam turbine 1 is hung, the steam turbine control system 9 is put into operation to control the opening degree of the steam inlet regulating valve of the steam turbine 1 to change the steam inlet flow, the rotating speed control of the steam turbine 1 is realized, after the warming-up process, the rotating speed of the steam turbine 1 is controlled to be larger than the rotating speed controlled by the air blower 3, the first overrunning clutch 2 is engaged, and the air blower 3 is coaxially and jointly driven by the steam turbine 1 and the medium-voltage variable frequency motor 6.
A steam driving mode: the air blower 3 is operated in a mode of coaxial combined driving of the steam turbine 1 and the medium-voltage variable-frequency motor 6, the steam turbine 1 is started and warmed up, when the steam turbine 1 operates stably and the supply of the copper smelting byproduct steam is sufficient, the medium-voltage variable-frequency control system 10 reduces the frequency of the medium-voltage variable-frequency motor 6 and reduces the rotating speed until the second overrunning clutch 4 is disengaged, and the air blower 3 is driven by the steam turbine 1 alone.
When the electric drive mode is operated, the rotating speed of the steam turbine 1 is equal to 0 or lower than the control rotating speed of the blower 3, and the bypass valve 8 on the steam branch is in an open state.
The rotating speed of the steam turbine 1 is equal to 0, and the steam exhaust isolating valve 7 is in a closed state; the rotating speed of the steam turbine 1 is greater than 0, and the steam exhaust isolating valve 7 is in an open state.
The above is a detailed description of the utility model in connection with specific preferred embodiments and is not to be understood as limiting the utility model, and equivalent alternatives to the steam-electric contralateral coaxial driven blower unit based on the utilization of copper smelting steam are to be considered as falling within the scope of protection of the utility model as determined by the claims without departing from the technical line of the utility model.
Claims (4)
1. The utility model provides a coaxial driven blower unit of vapour electricity heterodromous which characterized in that: the blower unit comprises a steam turbine (1), a first overrunning clutch (2), a blower (3), a second overrunning clutch (4), a speed increaser (5) and a medium-voltage variable frequency motor (6) which are sequentially connected along the axial direction; a steam inlet of the steam turbine (1) is connected with a pipeline of byproduct steam of the copper smelting system, and a steam outlet of the steam turbine (1) is connected with a steam exhaust isolating valve (7); the steam inlet of steam turbine (1) still is connected with the steam branch road, be provided with pressure reducer and bypass valve (8) on the steam branch road, the steam branch road gas vent is connected with the steam outlet of steam turbine (1), steam turbine (1) is controlled by steam turbine control system (9), middling pressure inverter motor (6) are controlled by middling pressure variable frequency control system (10).
2. The steam-electric opposite-side coaxially-driven blower unit according to claim 1, wherein: the output shaft of steam turbine (1) is connected with the input shaft of first freewheel clutch (2), the output shaft of first freewheel clutch (2) is connected with the one end of air-blower (3) main shaft, the other end of air-blower (3) main shaft is connected with the output shaft of second freewheel clutch (4), the input shaft of second freewheel clutch (4) and the output shaft of speed-increasing gear (5), the input shaft of speed-increasing gear (5) and the output shaft of middling pressure inverter motor (6).
3. The steam-electric opposite-side coaxially-driven blower unit according to claim 1, wherein: the blower (3) is of a double-shaft extension structure.
4. The steam-electric bilateral coaxial driven blower unit according to claim 1 or 2, characterized in that: the steam turbine (1) is a condensing industrial dragging steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692842.3U CN215486673U (en) | 2021-04-06 | 2021-04-06 | Steam-electricity different-side coaxial-driven blower unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692842.3U CN215486673U (en) | 2021-04-06 | 2021-04-06 | Steam-electricity different-side coaxial-driven blower unit |
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| Publication Number | Publication Date |
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| CN215486673U true CN215486673U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120692842.3U Active CN215486673U (en) | 2021-04-06 | 2021-04-06 | Steam-electricity different-side coaxial-driven blower unit |
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| CN (1) | CN215486673U (en) |
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2021
- 2021-04-06 CN CN202120692842.3U patent/CN215486673U/en active Active
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