CN201771562U - Screw rod expanding power machine and control system thereof - Google Patents
Screw rod expanding power machine and control system thereof Download PDFInfo
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- CN201771562U CN201771562U CN2010202858141U CN201020285814U CN201771562U CN 201771562 U CN201771562 U CN 201771562U CN 2010202858141 U CN2010202858141 U CN 2010202858141U CN 201020285814 U CN201020285814 U CN 201020285814U CN 201771562 U CN201771562 U CN 201771562U
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Abstract
The utility model provides a screw rod expanding power machine which comprises a pipeline type inlet device and a screw rod expanding power machine main body, wherein the pipeline type inlet device controls the flow of the inputted working fluid; and the screw rod expanding power machine main body is communicated with the pipeline type inlet device, obtains the working fluid from the pipeline type inlet device, and does work by the fluid to output the mechanical energy. The pipeline type inlet device comprises a plurality of inlets, a plurality of outlets and a rotating shaft, wherein the working fluid is input through the inlets input the working fluid; the working fluid is output through the outlets to the crew rod expanding power machine; and the rotating shaft comprises a first end part and a second end part, the first end part drives the rotating shaft to rotate, the surface of the rotating shaft is provided with a plurality of arc tubular passageways, the inlets are communicated with the outlets by the arc tubular passageways, and the radians of the arc tubular passageways are between pi and 2pi. The utility model further provides a control system of the screw rod expanding power machine. In this way, the size of the gas inlet can be automatically adjusted according to the size of the flow or the pressure of the current working fluid, thereby improving the heat utilization ratio.
Description
[technical field]
The utility model belongs to the waste heat utilization technology field, particularly relates to a kind of screw expansion motor and control system thereof.
[background technique]
The primary energy present situation of China allows of no optimist, though the coal resources reserves world rankings second (U.S. first, be a times of China's reserves), but the minable coal resources of China are not enough the century-old time, country far fewer than world's first six digits coal storage quantity, in addition, the oil and natural gas resource of China is also only enough exploited decades, and worldwide petroleum production is shortage within this century also.
Therefore, at above situation, it is very with practical value with the waste vapour recycling system of generating electricity effectively to reclaim unnecessary heat, usually, unnecessary heat in the recyclable industrial wastewater of waste vapour recycling system, blast furnace waste residue, the high temperature waste vapour etc. is converted to unnecessary heat that mechanical energy is generated electricity or other work.
Please refer to Figure 1A and Figure 1B, shown the basic principle of the screw expansion motor main body 10 of prior art.Waste heat flue gas or hydrothermal solution by admission passage 3 in admission road junction 4 enters the teeth groove of positive screw rod 1, rotation along with positive screw rod 1 and female screw 2, the cavity volume of working fluid (as waste vapour or working medium) increases gradually, working fluid step-down cooling is expanded and is done work, lead-screw rotates, and finishes the working fluid of merit and is discharged by steam exhausting way 5.Power can drive equipment such as feed water pump, blower fan, generator by the output terminal output of positive screw rod 1.
Fig. 2 has shown the basic structure of the screw expansion motor 30 of prior art, and it comprises screw expansion motor main body 10, load equipment 20, modulating valve 32, electric control cabinet 33, fuel tank 34 and pedestal 31.Screw expansion motor main body 10 has admission passage shown in Figure 13 and steam exhausting way 5.Screw expansion motor 10 links to each other with the output shaft of load equipment 20 by positive screw rod (figure does not show).Sometimes the rotating speed of screw expansion motor 10 is very fast, and speed reducer (figure does not show) need be set between screw expansion motor 10 and load equipment 20.
In existing waste vapour recycling system, the admission inlet size of screw expansion motor is determined by following mode usually, promptly estimate working fluid (for example being waste vapour or the working medium) flow that the waste vapour recycling system can be obtained in advance, the size of the admission inlet that matches according to this working fluid flow set then, therefore in the normal use afterwards, generally speaking can in screw expansion motor, use the admission inlet of fixed size.
The screw expansion motor that more than adopts fixedly admission inlet is very efficient under to the flow of work at present fluid (for example waste vapour or working medium) or the big or small metastable situation of pressure, when but the flow of work at present fluid or pressure size are unstable, the admission inlet that is set to fixed size can be wasted the heat and the build-up of pressure deficiency (or excessive) of work at present fluid, and this is very disadvantageous for the efficiency of utilization that improves whole waste vapour recycling system.
Therefore, need provide a kind of and can adjust the screw expansion motor and the control system thereof of admission inlet size automatically, thereby overcome the above problems according to work at present fluid flow or pressure size.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of screw expansion motor and control system thereof, and it can adjust admission inlet size automatically according to the flow of work at present fluid or pressure size, thereby has improved efficiency of utilization.
The utility model provides a kind of screw expansion motor, comprising: the pipe type inlet device is used to control the flow of the working fluid of input; The screw expansion motor main body is communicated with the pipe type inlet device, obtains working fluid from the pipe type inlet device, utilizes the working fluid acting with output mechanical energy; Wherein, the pipe type inlet device comprises: a plurality of imports are used for the input service fluid; A plurality of outlets are used for the output services fluid to screw expansion motor; Rotating shaft comprises first end and the second end, and first end drives rotating shaft and rotates, the rotating shaft surface is provided with a plurality of arc tubular conduits, a plurality of imports are communicated with a plurality of outlets respectively by a plurality of arc tubular conduits, wherein, the radian of a plurality of arc tubular conduits at π between 2 π.
According to one of the utility model preferred embodiment, the pipe type inlet device further comprises: limiting board, first end is placed through limiting board along axis, sways along limiting board.
According to one of the utility model preferred embodiment, the pipe type inlet device further comprises: supporting element, the second end is placed in supporting element, sways along supporting element.
According to one of the utility model preferred embodiment, working fluid is a waste gas.
According to one of the utility model preferred embodiment, working fluid is a working medium.
The utility model further provides a kind of control system of controlling screw expansion motor, comprising: the pressure measurement valve is used for the force value of surveying work fluid; The flow measurement valve is used for the flow value of surveying work fluid; The control module is according to the rotation angle of the rotating shaft of force value or flow value controlling plumbing fixtures formula inlet device.
According to one of the utility model preferred embodiment, the control module comprises: oil engine produces hydraulic stroke according to hydraulic pressure signal; Displacement transducer obtains the stroke detection signal according to hydraulic stroke; The digital electro-hydraulic control module is obtained force value and flow value, exports servo setting value according to force value and flow value; Servo module receives stroke detection signal and servo setting value, according to stroke detection signal and servo setting value output control signal; Electro-control converter receives control signal, control signal is converted to hydraulic pressure signal exports oil engine to; The cross driving mechanism is according to the rotation angle of the rotating shaft of hydraulic stroke controlling plumbing fixtures formula inlet device.
According to one of the utility model preferred embodiment, the cross driving mechanism comprises: pitch wheel and tooth bar, and first end is coaxial fixing with gear, and tooth bar is promoted by hydraulic stroke, and tooth bar moving belt moving gear rotates.
Therefore, the utility model provides a kind of screw expansion motor and control system thereof, and it can adjust admission inlet size automatically according to the flow of work at present fluid or pressure size, thereby has improved efficiency of utilization.
[description of drawings]
Can more specifically describe the utility model by example with reference to the accompanying drawings, wherein accompanying drawing is not proportionally drawn, in the accompanying drawings:
Figure 1A and Figure 1B have shown the basic principle of the screw expansion motor main body of prior art;
Fig. 2 has shown the basic structure of the screw expansion motor of prior art.
Fig. 3 has shown the schematic diagram of a preferred embodiment of the waste vapour recycling system of having used screw expansion motor of the present utility model;
Fig. 4 has shown the schematic diagram of another preferred embodiment of the waste vapour recycling system of having used screw expansion motor of the present utility model;
Fig. 5 has shown the structural representation of the pipe type inlet device in the screw expansion motor of the present utility model;
Fig. 6 is the longitudinal sectional drawing of the pipe type inlet device in the screw expansion motor of the present utility model;
Fig. 7 is the transverse cross-sectional view of rotating shaft under first angle of the pipe type inlet device in the screw expansion motor of the present utility model;
Fig. 8 is the transverse cross-sectional view of rotating shaft under second angle of the pipe type inlet device in the screw expansion motor of the present utility model;
Fig. 9 is the transverse cross-sectional view of rotating shaft under the third angle degree of the pipe type inlet device in the screw expansion motor of the present utility model;
Figure 10 is that the circuit of the control system of screw expansion motor of the present utility model connects block diagram; And
Figure 11 has shown the mechanical construction drawing of cross driving mechanism of the control system of screw expansion motor of the present utility model.
[embodiment]
In order further to understand the utility model is to reach technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, can obtain thus going deep into and concrete understanding, yet appended graphic reference and the explanation usefulness of only providing not is to be used for the utility model is limited.
Please refer to Fig. 3, Fig. 3 has shown the schematic diagram of a preferred embodiment of the waste vapour recycling system 100 of having used screw expansion motor of the present utility model.In Fig. 3, screw expansion motor 104 of the present utility model comprises pipe type inlet device 140 and screw expansion motor main body 102, waste vapour is discharged from waste steam exhausting equipment 101, enters pipe type inlet device 140 and screw expansion motor main body 102 via pipeline 105.Flow measurement valve 106, pressure measurement valve 160 are arranged on the inlet side of screw expansion motor 104 in the pipeline 105, and control module 111 obtains flow, pressure data from flow measurement valve 106, pressure measurement valve 160.Size-controlled molding group 111 controls of the steam inlet of pipe type inlet device 140, in addition, the heat that screw expansion motor main body 102 will be contained from the high temperature gas of pipe type inlet device 140 inputs is converted to mechanical energy, power is from the output terminal output of screw expansion motor main body 102, can drive load equipment (does not illustrate among Fig. 3, it can be equipment such as water pump, blower fan and generator, the utility model is not made restriction to this), waste vapour after the acting can be discharged from screw expansion motor main body 102, flows to waste vapour recovery operation station 103 along S1.
Fig. 4 has shown the schematic diagram of another preferred embodiment of the waste vapour recycling system 200 of having used screw expansion motor of the present utility model.In Fig. 4, screw expansion motor 204 of the present utility model comprises pipe type inlet device 240 and screw expansion motor main body 202, waste vapour is discharged from waste steam exhausting equipment 201, enter heat exchanger 217 via pipeline 205, after handling, heat exchange flows out to waste vapour recovery operation station 203, working medium circulation loop 216 is same through heat exchanger 217, and heat exchanger 217 can be with the working medium in the heat transferred working medium circulation loop 205 that the waste vapour in the pipeline 205 contained (this working medium flow direction be pointed for S2 among Fig. 2).Flow measurement valve 206, pressure measurement valve 260 is arranged on the inlet side of screw expansion motor 204 in the working medium circulation loop 205, control module 211 is from flow measurement valve 206, pressure measurement valve 260 obtains flow, force value, 240 controlled module 211 controls of pipe type inlet device, screw expansion motor main body 202 will be converted to mechanical energy from the heat that high temperature refrigerant contained of pipe type inlet device 240 inputs, power is from the output terminal output of screw expansion motor main body 202, can drive load equipment (does not illustrate among Fig. 4, it can be water pump, equipment such as blower fan and generator, the utility model is not made restriction to this), working medium after the acting can be discharged from screw expansion motor main body 202, flows to heat exchanger 217 along S2 and reheats.In addition, in Fig. 4, also can comprise condenser 218 in working medium circulation loop 205, condenser 218 is arranged on the working medium outlet side of screw expansion motor main body 202, is used for further cooling working medium.
Please refer to Fig. 5, it has shown the structural representation of the pipe type inlet device 340 in the screw expansion motor of the present utility model.Wherein, pipe type inlet device 340 in the screw expansion motor of the present utility model shown in Fig. 5 and Fig. 3 and pipe type inlet device 140 and 240 shown in Figure 4 are identical, and pipe type inlet device 340 can be used for controlling the flow of the hot operation fluid (as waste vapour or working medium) of input.As shown in Figure 5, pipe type inlet device 340 comprises import 309,310,311, outlet 303,304,305, rotating shaft 312 and limiting board 313.The surface of rotating shaft 312 is provided with passage 306,307,308, passage 306,307,308 are set to the arc tubulose, its radian for example can be at π to (being its central angle spends between 360 degree 180) between 2 π, and limiting board 313 and supporting element 301 are used for fixing rotating shaft 312.Wherein, import 309,310,311 and outlet 303,304,305 fixedly install, and rotating shaft 312 can rotate around the axis.
Working fluid can be from import 309,310,311 inputs, link to each other with screw expansion motor and export 303,304,305, working fluid can enter in the screw expansion motor main body (shown in 202 among 102 among Fig. 3 or Fig. 4) of screw expansion motor by outlet 303,304,305.Therefore the screw expansion motor main body is communicated with pipe type inlet device 340, obtains the hot operation fluid from pipe type inlet device 340, utilizes its acting with output mechanical energy.
By above setting, rotating shaft 312 can be swayed along supporting member 301 that fixedly installs and limiting board 313.
Fig. 6 is the longitudinal sectional drawing of the pipe type inlet device in the screw expansion motor of the present utility model.With reference to Fig. 6 as can be known, when rotating shaft 312 turns to several angle, import 309,310,311 can be respectively by passage 306,307,308 and outlet 303,304,305 are connected, and this moment, working fluid can be from passage 306,307, and 308 enter into the screw expansion motor main body.
It should be noted that, when rotating shaft 312 turns to other angle, import 309,310,311 can pass through passage 306,307 respectively, in 308 one or the two and outlet 303,304,305 parts are communicated with, thereby make working fluid to enter into the screw expansion motor main body by one or two passages.
Fig. 7 is the transverse cross-sectional view of rotating shaft 312 under first angle of the pipe type inlet device 340 in the screw expansion motor of the present utility model.As shown in Figure 7, when rotating shaft 312 turns to first angle, import 309,310,311 can be respectively by passage 306,307,308 and outlet 303,304,305 are connected, and working fluid can be discharged by passage 306,307,308 and be entered into the screw expansion motor main body this moment.
Fig. 8 is the transverse cross-sectional view of rotating shaft under second angle of the pipe type inlet device in the screw expansion motor of the present utility model.As shown in Figure 8, when rotating shaft 312 turns to second angle (rotating shaft 312 is with respect to the α of rotating counterclockwise degree shown in Figure 5), import 310,311 can pass through passage 307 respectively, 308 with the outlet 304,305 are connected, and this moment, working fluid can enter into the screw expansion motor main body from passage 307,308.And import 309 is rotated and can not be connected with passage 306 because of rotating shaft 312, so import 309 stopped up by the non-channel part of rotating shaft 312, and working fluid can not enter the screw expansion motor main body by exporting 303.
Fig. 9 is the transverse cross-sectional view of rotating shaft under the third angle degree of the pipe type inlet device in the screw expansion motor of the present utility model.As shown in Figure 9, rotating shaft 312 turns to third angle when spending (rotating shaft 312 is with respect to the 2 α degree that rotate counterclockwise shown in Figure 7), import 311 can be connected with outlet 305 by passage 308, and this moment, working fluid can enter into the screw expansion motor main body from passage 308.And import 309 and 310 is rotated and can not be connected with passage 306 and 307 because of rotating shaft 312, so import 309 and 310 stopped up by the non-channel part of rotating shaft 312, and working fluid can not be expelled to the screw expansion motor main body by exporting 303 and 304.
In sum, when rotating shaft 312 is rotated in different amount, inlet can with corresponding channel connection, thereby can discharge working fluid to the screw expansion motor main body from the outlet of corresponding connection.In above embodiment, along with rotating shaft 312 is positioned at different rotation angles, the quantity that passage is opened is respectively 3,2,1, and the quantity of opening when passage is many more, the working fluid that flows into the screw expansion motor acting is just many more, the quantity of opening when passage is few more, and the working fluid that flows into the acting of screw expansion motor main body is just few more, therefore can determine to adopt how many working fluids to flow into the acting of screw expansion motor main body by rotating shaft 312.
It should be noted that, the utility model has only been introduced on specification and accompanying drawing for convenience of description and has been adopted 309,310,311,3 passages 306 of 3 imports, 307, the situation of 308 and 3 outlets 303,304,305, the utility model does not limit the number of import, outlet and passage, generally speaking, the number of import, outlet and the passage of respective numbers can be set according to actual needs, make its suitable system demand for control.
Figure 10 is that the circuit of the control system of screw expansion motor of the present utility model connects block diagram.Please refer to Figure 10, this control system control module 700, pressure measurement valve 711 and flow measurement valve 731 are wherein controlled module 700 and are comprised digital electro-hydraulic control module 702, servo module 703, electro-control converter 704, oil engine 705, cross driving mechanism 706 and displacement transducer 741.Digital electro-hydraulic control module 702 can be obtained the measured force value of representative from pressure measurement valve 711, can obtain the measured flow value of representative from flow measurement valve 731.
The digital electro-hydraulic control module more than 702 pairs force value and flow value calculate, export servo setting value.
Electro-control converter 704 is used to receive the control signal of servo module 703 outputs, and control signal is converted to hydraulic pressure signal output.
The hydraulic stroke that displacement transducer 741 detects oil engine 705 obtains the stroke detection signal, and the stroke detection signal is inputed to servo module 703.
The hydraulic stroke that cross drive mechanism 706 produces according to oil engine 705 promotes pipe type inlet device 340 and rotates.
Figure 11 shows is the mechanical construction drawing of cross driving mechanism of the control system of screw expansion motor of the present utility model.As shown in figure 11, cross driving mechanism 706 comprises gear 801 and tooth bar 804, wherein the first end 314 of the rotating shaft 312 of pipe type inlet device is coaxial fixing with gear 801, the hydraulic stroke that tooth bar 804 is produced by oil engine 705 promotes to come and go along the P1 direction mobile, in addition, tooth bar 804 and gear 801 engagements, tooth bar 804 comes and goes along the P1 direction and moves and can come back rotation along the P2 direction by driven gear 801, and because first end 314 is coaxial fixing with gear 801, gear 801 can drive rotating shaft 312 and rotate.Therefore, the rotation angle of the hydraulic stroke may command rotating shaft 312 that oil engine 705 produces flows into the screw expansion motor main body thereby control how many working fluids.
Therefore, the control system of screw expansion motor of the present utility model can be by the force value or the flow value of the working fluid in pressure measurement valve 711 or flow measurement valve 731 measuring channels, control module 700 obtains this force value or flow value, and it carries out the rotation angle of calculation process with the rotating shaft of decision pipe type inlet device, therefore the screw expansion motor that the utility model disclosed can be according to the pressure of work at present fluid or the passage of the open corresponding number of flow control pipeline formula inlet device, thereby guaranteed that the screw expansion motor main body is not influenced by the flow of working fluid or fluctuating widely of pressure, improved efficiency of utilization.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application under the situation that does not break away from spirit and scope of the present utility model.
Claims (8)
1. a screw expansion motor is characterized in that, comprising:
The pipe type inlet device is used to control the flow of the working fluid of input;
The screw expansion motor main body is communicated with described pipe type inlet device, obtains described working fluid from described pipe type inlet device, utilizes described working fluid acting with output mechanical energy;
Wherein, described pipe type inlet device comprises:
A plurality of imports are used to import described working fluid;
A plurality of outlets are used to export described working fluid to described screw expansion motor;
Rotating shaft, comprise first end and the second end, described first end drives described rotating shaft and rotates, described rotating shaft surface is provided with a plurality of arc tubular conduits, described a plurality of import is communicated with described a plurality of outlets respectively by described a plurality of arc tubular conduits, wherein, the radian of described a plurality of arc tubular conduits at π between 2 π.
2. screw expansion motor according to claim 1 is characterized in that, described pipe type inlet device further comprises:
Limiting board, described first end is placed through described limiting board along axis, sways along described limiting board.
3. screw expansion motor according to claim 1 is characterized in that, described pipe type inlet device further comprises:
Supporting element, described the second end is placed in described supporting element, sways along described supporting element.
4. screw expansion motor according to claim 1 is characterized in that, described working fluid is a waste vapour.
5. screw expansion motor according to claim 1 is characterized in that, described working fluid is a working medium.
6. a control system of controlling each described screw expansion motor of claim 1 to 5 is characterized in that, comprising:
The pressure measurement valve is used to measure the force value of described working fluid;
The flow measurement valve is used to measure the flow value of described working fluid;
The control module is controlled the rotation angle of the described rotating shaft of described pipe type inlet device according to described force value or described flow value.
7. control system according to claim 6 is characterized in that, described control module comprises:
Oil engine produces hydraulic stroke according to hydraulic pressure signal;
Displacement transducer obtains the stroke detection signal according to described hydraulic stroke;
The digital electro-hydraulic control module is obtained described force value and flow value, exports servo setting value according to described force value or flow value;
Servo module receives described stroke detection signal and described servo setting value, according to stroke detection signal and described servo setting value output control signal;
Electro-control converter receives described control signal, described control signal is converted to hydraulic pressure signal exports described oil engine to;
The cross driving mechanism is controlled the rotation angle of the described rotating shaft of described pipe type inlet device according to described hydraulic stroke.
8. control system according to claim 7 is characterized in that, described cross driving mechanism comprises:
Pitch wheel and tooth bar, described first end is coaxial fixing with described gear, and described tooth bar is promoted by described hydraulic stroke, and described tooth bar moves and drives described gear rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202858141U CN201771562U (en) | 2010-08-10 | 2010-08-10 | Screw rod expanding power machine and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202858141U CN201771562U (en) | 2010-08-10 | 2010-08-10 | Screw rod expanding power machine and control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771562U true CN201771562U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202858141U Expired - Fee Related CN201771562U (en) | 2010-08-10 | 2010-08-10 | Screw rod expanding power machine and control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201771562U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922319A (en) * | 2010-08-10 | 2010-12-22 | 深圳市海利科科技开发有限公司 | Screw expansion power machine and control system thereof |
| CN102269015A (en) * | 2011-08-17 | 2011-12-07 | 吴植仁 | Multi-screw rod expansion machine |
-
2010
- 2010-08-10 CN CN2010202858141U patent/CN201771562U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922319A (en) * | 2010-08-10 | 2010-12-22 | 深圳市海利科科技开发有限公司 | Screw expansion power machine and control system thereof |
| CN101922319B (en) * | 2010-08-10 | 2013-12-11 | 深圳市海利科科技开发有限公司 | Screw expansion power machine and control system thereof |
| CN102269015A (en) * | 2011-08-17 | 2011-12-07 | 吴植仁 | Multi-screw rod expansion machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20130810 |