CN203809054U - Roots-type small steam power generating unit - Google Patents
Roots-type small steam power generating unit Download PDFInfo
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- CN203809054U CN203809054U CN201420214743.4U CN201420214743U CN203809054U CN 203809054 U CN203809054 U CN 203809054U CN 201420214743 U CN201420214743 U CN 201420214743U CN 203809054 U CN203809054 U CN 203809054U
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Abstract
The utility model discloses a Roots-type small steam power generating unit. The Roots-type small steam power generating unit comprises a main valve, a flow meter, a pressure sensor, a temperature sensor, a flow valve, an encoder, a steam power machine, a power generator, a condenser, a touch screen and a control unit, wherein the main valve is an electric valve and is arranged on a main steam inlet pipeline, and a drive motor of the main valve is connected the control unit; a bypass pipeline is arranged on a pipeline between the main valve and the power generator; the flow valve is arranged on the bypass pipeline; the outflow end of the flow valve is connected with the condenser of the power generator; the flow valve is connected with the control unit; the encoder is arranged on the steam power machine of the power generator and is connected with the control unit; the flow meter, the pressure sensor and the temperature sensor are arranged between the main valve and the bypass pipeline and are all connected with the control unit; the touch screen is connected with the control unit. The utility model discloses a strategy of controlling disturbance separation collaboratively; the steam inlet energy loss can be reduced; the flow control can be optimized; the jitter phenomenon of a valve core of the flow valve can be eliminated; the working quality of the overall Roots-type small steam power generating unit can be improved.
Description
Technical field
The utility model relates to a kind of small steam power generating equipment, specifically a kind of roots-type small steam generator set.
Background technique
In current industrial production, there are a large amount of low pressure steam sources of the gas, because these low pressure steams can not drive powerful steam electric power unit, conventionally in factory, disperse to distribute directly to discharge after condensation.Research finds to use small steam generator set to recycle these low pressure steams.Its core component of steam electric power unit is steam power machine, and in the prior art, the steam power machine of small steam generator set is positive displacement.As roots-type steam power machine, be constant volume formula, the rotor steam flow being passed through that often rotates a circle is definite value, the flow passing through is directly proportional to rotating speed.So the generator set that roots-type steam power machine drives is comparatively responsive to the flowed fluctuation of steam, the flow rotating speed that fluctuates also can fluctuate.For ensureing power generating quality, power engine rotating speed should be stablized as far as possible and each link energy loss of steam circulation should reduce as far as possible.Therefore the control of charge flow rate is extremely important to roots-type steam power machine.In prior art, roots-type small steam generator set air inlet control realizes by the following method: admission line is directly connected with gas source pipe, and admission line is provided with Flow valve, by adjust flux valve opening control charge flow rate.
There is following shortcoming in prior art:
1. air inlet local energy loss is large.Its main cause is Flow valve runner complexity, and Flow valve spool acts frequently, and all steam all will be flowed through and be interfered.Flow valve is arranged on air inlet main pipeline, and the steam that all the enters power engine Flow valve of all will flowing through, all will pass through the runner of Flow valve molded line complexity, and off-energy is more.Especially in the Dynamic Regulating Process of spool action, convection cell state disturbs particularly evident, and energy loss is more.Local energy loss is mainly determined by Flow valve runner line style, its runner line style of Flow valve is bending and have a radial contraction, especially comparatively complicated and irregular at spool, valve seat cooperation place boundary shape, easily in valve, cause flow separation and produce whirlpool, especially particularly violent in spool course of action, the mechanical energy that sharply change all can consume steam of the formation of whirlpool and decay and velocity flow profile.And roots-type steam power machine is comparatively responsive to charge flow rate fluctuation, for ensureing that stability of flow spool need to respond rapidly and frequent movement, disturbance is more violent like this.
2. Flow valve affects steam characteristic, cannot stablize charge flow rate, and Flow valve spool there will be jitter phenomenon.The complicated runner of Flow valve and the action of spool can be disturbed the characteristic of steam, make measurement and the adjusting of flow become difficulty, determine that Flow valve aperture difficulty and error are large, cause the power engine fluctuation of speed large, make Flow valve need frequent movement more, easily there is jitter phenomenon in spool, has a strong impact on vapor stream characteristic.And Flow valve is placed on air inlet main pipeline, its caliber big valve core stroke is long, responds slowlyer, makes regime flow very difficult.As: when flow is excessive, Flow valve will reduce aperture throttling, because the pressure that reduces to enter the steam before valve, the density of valve opening can increase, add the fluctuation of source of the gas steam flow, make to determine the valve opening difficulty of next action, and error is larger, after this action, due to instability of flow, rotating speed still exists fluctuation spool to need further action to adjust flow, the dither state that so can enter frequent movement.
3. Flow valve is placed in main pipeline, and bore is large, stroke is long, cost is high, increases the cost of electric energy.
In existing small steam generator set patent, especially the steam electric power unit that roots-type steam power machine drives is as " a kind of small steam generator set " (patent No.: 201310117957.X), " steam power machine " (patent No.: 200620004092.1), " Roots's steam power machine " (patent No.: 201210459887.1), " a kind of small steam generator set " (patent No.: 201320168272.3), for making capacity usage ratio high, power generating quality is high, in these designs, be badly in need of adding the loss that can reduce energy, improve the parts of discharge stability.
Based on prior art deficiency, invent that low-yield loss, charge flow rate are effectively controlled and efficient cheap roots-type small steam generator necessary.
Model utility content
For the deficiencies in the prior art, problem to be solved in the utility model is: a kind of roots-type small steam generator set is provided.This generator set can utilize low pressure steam source of the gas to generate electricity, the admission line system of design significantly reduces the disturbance of steam, steam energy significantly reduces because pipeline affects the loss causing, fundamentally eliminate Flow valve jitter phenomenon, control more accurately and flow into power engine flow, improve the craftmanship of generator set with stabilized (steady-state) speed, thereby improve the quality of generating.
The technological scheme that the utility model solve the technical problem is: design a kind of roots-type small steam generator set.This generator set comprises main valve, flowmeter, pressure transducer, temperature transducer, Flow valve, encoder, steam power machine, generator, condenser, touch screen and control unit; Wherein, the main body that steam power machine, generator, condenser are this generator set, steam power machine is connected with generator and condenser respectively, and is communicated with air inlet main pipeline; It is characterized in that, described control unit is made up of PLC and flow integrator, and flow integrator is electrically connected with PLC; Described main valve is mortor operated valve, is arranged on air inlet main pipeline, and the isometrical and cross section of its runner and air inlet main pipeline is without radial contraction, and its drive motor is electrically connected with the PLC of control unit; Described flowmeter, pressure transducer, temperature transducer are arranged on the air inlet main pipeline between main valve and steam power machine successively, and are electrically connected with the flow integrator of control unit; On the air inlet main pipeline between temperature transducer and steam power machine, be provided with a bypass duct, the caliber of bypass duct is less than air inlet main pipeline caliber; Described Flow valve is arranged on bypass duct, is electrically connected with the PLC of control unit, is connected with condenser tube; Described encoder is arranged on steam power machine, and is electrically connected with the PLC in control unit; Described touch screen is electrically connected with the PLC of control unit.
The utility model compared with prior art, its beneficial effect is: the utility model proposes the strategy that a kind of Collaborative Control disturbance separates, can reduce the air inlet energy loss of steam, optimal control method, realizing charge flow rate controls more accurately, make intake process disturbance minimum, energy consumption minimum, and eliminated spool shake.Can on touch screen, intuitively dynamically show the parameters such as current steam flow, pressure, temperature and power engine rotating speed and can carry out man-machine interaction simultaneously.The utility model is applied to roots-type small steam generator set and has great importance.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model generator set.
Fig. 2 is the air inlet pipeline control principle schematic diagram of the utility model generator set.
Embodiment
Be described in further detail the utility model below in conjunction with specific embodiment.
The utility model roots-type small steam generator set (is called for short generator set, referring to Fig. 1), comprise main valve 1, flowmeter 2, pressure transducer 3, temperature transducer 4, Flow valve 5, encoder 6, steam power machine 7, generator 8, condenser 9, touch screen 10 and control unit 11; Wherein, the main body that steam power machine 7, generator 8, condenser 9 are this generator set, steam power machine 7 is connected with generator 8 and condenser 9 respectively, and is communicated with air inlet main pipeline; It is characterized in that, described control unit 11 is made up of PLC and flow integrator, and flow integrator is electrically connected with PLC; Described main valve 1 is mortor operated valve, is arranged on air inlet main pipeline, and the isometrical and cross section of its runner and air inlet main pipeline is without radial contraction, and its drive motor is electrically connected with the PLC of control unit 11; Described flowmeter 2, pressure transducer 3, temperature transducer 4 are arranged on the air inlet main pipeline between main valve 1 and steam power machine 7 successively, and are electrically connected with the flow integrator of control unit 11; On the air inlet main pipeline between temperature transducer 3 and steam power machine 7, be provided with a bypass duct, the caliber of bypass duct is less than air inlet main pipeline caliber; Described Flow valve 5 is arranged on bypass duct, is electrically connected with the PLC of control unit 11, is connected with condenser 9 pipes; Described encoder 6 is arranged on steam power machine 7, and is electrically connected with the PLC in control unit 11; Described touch screen 10 is electrically connected with the PLC of control unit 11.
The model of PLC in described control unit 11 is FX3u-48M, and the model of flow integrator used is SB-2100A.
The model of described encoder is TepS3806G-300BM-C526.
Part in the present embodiment is commercially available, unreceipted model be conventional common part.
Its working principle of the utility model generator set (referring to Fig. 1-2) is: in the time that source of the gas steam is linked into this generator set, control adaptive flow with main valve 1, the flowed fluctuation of source of the gas steam is finely tuned by bypass duct earial drainage, realizes the control to charge flow rate by the interoperation of main valve 1 and Flow valve 5.When start, Flow valve 5 cuts out and main valve 1 is opened gradually, flowmeter 2, pressure transducer 3, temperature transducer 4 and encoder 6 in real time data transmission in control unit 11, and be presented on touch screen 10.Control unit 11 calculates present flow rate, and temperature, pressure value is used for temperature pressure compensation, thereby calculates comparatively accurate present flow rate and be presented on touch screen 10.According to the Information Regulating control unit 11 on touch screen 10, input control information, regulation and control main valve 1 until after reaching rated speed main valve 1 stop action, now relatively present flow rate and rated flow information of control unit 11, obtained the characteristic of present flow rate by deviation, be adjusted signal and with input control algorithm together with the tach signal of encoder 6, by gained control signal input flow rate valve 5.If source of the gas fluctuating flow rate increases, steam power machine 7 rotating speeds increase, and start Flow valve 5 and carry out earial drainage, are jointly determined the aperture of Flow valve 5 by current rotating speed and flow, and a small amount of steam of earial drainage enters in the condenser 9 of generator set.When Flow valve 5 continues to reduce when larger flow needs earial drainage the aperture of main valve 1, control unit 11 is controlled two valve events and is made vent flow minimum.In the time that gas source and flow amount reduces to cause the rotating speed of steam power machine 7 to reduce, close Flow valve 5, increase the aperture of main valve 1 simultaneously.
The utility model generator set based on thinking be: propose the strategy that a kind of Collaborative Control disturbance separates, reach intake process disturbance minimum and the minimum object of air inlet energy loss by the structure of simple optimizing.Be about to the steam of input by the cooperation Collaborative Control of main valve 1 and Flow valve 5, main valve 1 is being controlled adaptive flow, and Flow valve 5 is being controlled excessive flow; Adaptive traffic flow all directly enters steam power machine 7 through main valve 1, and the disturbance that regulating action produces only acts on the excessive flow being separated, and excessive flow does not enter steam power machine 7, and is made excessive flow minimum or do not had by control.If source of the gas steam is sufficient, can increases generator power and improve adaptive flow or increase many groups equipment.
The present embodiment is only a concrete application example of the utility model generator set, is not used as the restriction of claim, allly on basis of the present utility model, simply imitates, transforms all within protection domain of the present utility model.
The utility model is not addressed part and is applicable to prior art.
Claims (3)
1. a roots-type small steam generator set, this generator set comprises main valve, flowmeter, pressure transducer, temperature transducer, Flow valve, encoder, steam power machine, generator, condenser, touch screen and control unit; Wherein, the main body that steam power machine, generator, condenser are this generator set, steam power machine is connected with generator and condenser respectively, and is communicated with air inlet main pipeline; It is characterized in that, described control unit is made up of PLC and flow integrator, and flow integrator is electrically connected with PLC; Described main valve is mortor operated valve, is arranged on air inlet main pipeline, and the isometrical and cross section of its runner and air inlet main pipeline is without radial contraction, and its drive motor is electrically connected with the PLC of control unit; Described flowmeter, pressure transducer, temperature transducer are arranged on the air inlet main pipeline between main valve and steam power machine successively, and are electrically connected with the flow integrator of control unit; On the air inlet main pipeline between temperature transducer and steam power machine, be provided with a bypass duct, the caliber of bypass duct is less than air inlet main pipeline caliber; Described Flow valve is arranged on bypass duct, is electrically connected with the PLC of control unit, is connected with condenser tube; Described encoder is arranged on steam power machine, and is electrically connected with the PLC in control unit; Described touch screen is electrically connected with the PLC of control unit.
2. roots-type small steam generator set according to claim 1, is characterized in that: the model of the PLC in described control unit 11 is FX3u-48M, the model of flow integrator used is SB-2100A.
3. roots-type small steam generator set according to claim 1, is characterized in that: the model of described encoder is TepS3806G-300BM-C526.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214743.4U CN203809054U (en) | 2014-04-29 | 2014-04-29 | Roots-type small steam power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214743.4U CN203809054U (en) | 2014-04-29 | 2014-04-29 | Roots-type small steam power generating unit |
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| Publication Number | Publication Date |
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| CN203809054U true CN203809054U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420214743.4U Withdrawn - After Issue CN203809054U (en) | 2014-04-29 | 2014-04-29 | Roots-type small steam power generating unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925008A (en) * | 2014-04-29 | 2014-07-16 | 河北工业大学 | Roots small-sized steam generator unit |
-
2014
- 2014-04-29 CN CN201420214743.4U patent/CN203809054U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925008A (en) * | 2014-04-29 | 2014-07-16 | 河北工业大学 | Roots small-sized steam generator unit |
| CN103925008B (en) * | 2014-04-29 | 2016-03-30 | 河北工业大学 | A kind of roots-type small steam generator set |
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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: 20140903 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |