CN207879397U - A kind of enclosed twin-screw expander power generator - Google Patents
A kind of enclosed twin-screw expander power generator Download PDFInfo
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- CN207879397U CN207879397U CN201820098416.5U CN201820098416U CN207879397U CN 207879397 U CN207879397 U CN 207879397U CN 201820098416 U CN201820098416 U CN 201820098416U CN 207879397 U CN207879397 U CN 207879397U
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- twin
- screw
- cam follower
- rotor
- screw expander
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Abstract
The utility model discloses a kind of enclosed twin-screw expander power generator, is made of heat exchanger (1), the first valve (2), the twin-screw expander (3) with big expansion ratio, a pair of of synchromesh gear (4), first shaft coupling (5), generator (6), the second valve (7), condenser (8), third valve (9), lobed rotor pump (10), second shaft coupling (11), third shaft coupling (12) and the 4th valve (13)；Using ammonia water mixture as cycle fluid；Pressure-increasing unit is carried out using lobed rotor pump (10)；Expansion work is carried out using the twin-screw expander (3) with big expansion ratio, screw rotor has the characteristics that inter-tooth volume gradually increases from inlet high pressure end to outlet low-pressure end；It is coaxially connected using twin-screw expander (3), lobed rotor pump (10) and generator (6) with big expansion ratio；Entire power generator torque is uniform, compact-sized, widely applicable, and heat utilization rate is high.
Description
Technical field
The utility model is related to a kind of enclosed power generator for thermal energy, are expanded using twin-screw more particularly to a kind of
The enclosed power generator of machine and lobe pump.
Background technology
Twin-screw expander is as prime mover, because its is efficient, good suitable for gas-liquid two-phase working medium and self-cleaning ability excellent
Point is widely used in heat energy power-generating circulator；Whether being isolated from the environment according to working medium, circulator is divided into open circulation dress
It sets and closed circuit system；Closed circuit system refers to being carried out in loop using certain low-boiling point material as cycle fluid
The device of specific thermal procession, equipment generating efficiency is high, and not perishable, service life is long.
It is swollen to disclose a kind of twin-screw for low temperature exhaust heat recovery system by Chinese patent, publication No. CN206129323U
Swollen machine；The characteristics of twin-screw expander of the device is：The screw rotor uniform pitch of twin-screw expander, and position in an axial direction
The profile in each section is constant, and area utilization factor is constant, and inter-tooth volume changes not enough greatly, and expansion ratio is small.
In closed circuit system, the conversion ratio of energy is improved by the phase transformation of control loop working medium；It will be a certain proportion of
Gas-liquid two-phase cycle fluid completely expands to gas phase, to the greatest extent converts the thermal energy of cycle fluid to the machinery of screw rotor
Energy；But realize that above-mentioned cycle needs the expanding machine with big expansion ratio, therefore study the twin-screw with big expansion ratio and expand
Machine simultaneously realizes that closed cycle has great importance.
Utility model content
In order to improve heat utilization rate, the utility model proposes a kind of enclosed twin-screw expander power generator；Using ammonia
Aqueous mixtures are circulatory mediator；Using lobed rotor pump (10) to full liquid phase ammonia water mixture pressure-increasing unit, lobed rotor pump
(10) have the characteristics that uniform without tired liquid phenomenon and moment distribution；Heat exchange, full liquid phase ammonia are carried out using heat exchanger (1) and heat source
Aqueous mixtures become gas-liquid two-phase ammonia water mixture；It will be a certain proportion of using the twin-screw expander (3) with big expansion ratio
Gas-liquid two-phase ammonia water mixture is expanded to full gas phase ammonia water mixture, and screw rotor has the characteristics that varying pitch and taper, between cog
Volume gradually increases from inlet high pressure end to outlet low-pressure end；Full gas phase ammonia water mixture is condensed into entirely using condenser (8)
Liquid phase ammonia water mixture；Using the twin-screw expander (3) with big expansion ratio, lobed rotor pump (10) and generator (6) are same
Axis is connected.
To achieve the above object, the utility model adopts the following technical solution：
A kind of enclosed twin-screw expander power generator, by heat exchanger (1), the first valve (2), with double spiral shells of big expansion ratio
Bar expanding machine (3), a pair of of synchromesh gear (4), first shaft coupling (5), generator (6), the second valve (7), condenser (8), third
Valve (9), lobed rotor pump (10), second shaft coupling (11), third shaft coupling (12) and the 4th valve (13) composition；At the beginning of cycle fluid
Begin to be full liquid phase ammonia water mixture, after lobed rotor pump (10) supercharging, carries out heat exchange into heat exchanger (1) and heat source, follow
Ring Temperature of Working increases, and full liquid phase ammonia water mixture becomes gas-liquid two-phase ammonia water mixture, and the ratio by setting ammonia and water changes
Become cycle fluid boiling point, controls the gas-liquid volume ratio of gas-liquid two-phase ammonia water mixture in suitable range；Gas-liquid after heat absorption
Two-phase ammonia water mixture enters the twin-screw expander (3) with big expansion ratio and carries out expansion work, and cycle fluid temperature reduces,
Become full gas phase ammonia water mixture；Full gas phase ammonia water mixture after expansion enters condenser (8), the cycle in condenser (8)
Working medium, which is condensed, helps liquid phase ammonia aqueous mixtures, then after being pressurized by lobed rotor pump (10), is carried out into heat exchanger (1) and heat source
The working cycles of a cycle are completed in heat exchange；The pressure in condenser (8) is controlled by the second valve (7) and third valve (9)；
In the course of work, the twin-screw expander (3) with big expansion ratio drives lobed rotor pump (10) and generator (6) to turn together
It is dynamic, it generates electricity.
A kind of enclosed twin-screw expander power generator, the twin-screw expander (3) with big expansion ratio is by the right side
It revolves conical screw rotor (301) and left-handed conical screw rotor (302) forms, dextrorotation conical screw rotor (301) is from entrance height
Pressure side to outlet low-pressure end screw pitch gradually increase, radius of addendum R1Linearly increase with axial position, root radius R3With axial direction
Position linearly reduces in proportion, R1+R3Numerical value is constant；Left-handed conical screw rotor (302) and dextrorotation conical screw rotor (301)
It can realize at a fully engaged.
A kind of enclosed twin-screw expander power generator, lobed rotor pump (10) is by the first cam follower (1001)
It is formed with the second cam follower (1002)；Rough tie point is not present in the profile molded line of first cam follower (1001)；With
The centre of gyration point O of one cam follower (1001) establishes rectangular coordinate system, and the profile molded line of the first cam follower (1001) is about x
Axis and y-axis are all symmetrical, and the curve that 1/4 profile molded line of the first cam follower (1001) is smoothly connected by 4 sections of head and the tail forms, successively
For：Addendum circle arc AB, circular arc BC, the equidistant curve CD of cycloid, tooth root circular arc DE；The profile molded line of first cam follower (1001)
It is identical with the profile molded line of the second cam follower (1002)；Lobed rotor pump (10) synchronizes incorgruous dual AC power in two rotors
There is no the closing working chamber that volume is gradually reduced in movement, the appearance of tired liquid phenomenon is avoided, moment distribution is uniform；Cam turns
The first cam follower (1001) of son pump (10) and the centre-to-centre spacing of the second cam follower (1002) and double spiral shells with big expansion ratio
The dextrorotation conical screw rotor (301) of bar expanding machine (3) is identical with the left-handed centre-to-centre spacing of conical screw rotor (302).
A kind of enclosed twin-screw expander power generator, the first cam follower (1001) of lobed rotor pump (10)
It is connected by second shaft coupling (11) with the dextrorotation conical screw rotor (301) of the twin-screw expander (3) with big expansion ratio,
Eccentric axial line overlaps；The second cam follower (1002) of lobed rotor pump (10) and the twin-screw expander with big expansion ratio
(3) left-handed conical screw rotor (302) is connected by third shaft coupling (12), and eccentric axial line overlaps；With big expansion ratio
Twin-screw expander (3) dextrorotation conical screw rotor (301) and left-handed conical screw rotor (302) and a pair of of synchromesh gear
(4) it is connected；The dextrorotation conical screw rotor (301) of twin-screw expander (3) with big expansion ratio and generator (6) pass through the
One shaft coupling (5) is connected, and eccentric axial line overlaps.
The utility model has the beneficial effects that：
1. a kind of enclosed twin-screw expander power generator proposed, by ammonia water mixture in closed circulation system
Phase transformation, to the greatest extent absorb and conversion thermal energy, improve heat utilization rate.
2. the ratio by setting ammonia and water changes cycle fluid boiling point, the gas-liquid of gas-liquid two-phase ammonia water mixture is controlled
Product than in suitable range, realize in the twin-screw expander (3) with big expansion ratio ammonia water mixture by gas-liquid two-phase to
The transformation of full gas phase, heat utilization rate is high, and Applicable temperature range is wide.
3. using the twin-screw expander (3) with big expansion ratio, inter-tooth volume is from inlet high pressure end to outlet low-pressure end
Gradually increasing, suction end high-pressure side inter-tooth volume is minimum, and exhaust end low-pressure side inter-tooth volume is maximum, can realize big expansion ratio,
And then improve the heat utilization rate of the present apparatus.
4. rough tie point is not present in the cam follower profile molded line of lobed rotor pump (10), mixed in full liquid phase ammonium hydroxide
During the pressure-increasing unit of object, the closing working chamber volume being gradually reduced is not present in lobed rotor pump (10), is not in tired liquid
Phenomenon, moment distribution are uniform.
5. by the twin-screw expander (3) with big expansion ratio, lobed rotor pump (10) and generator (6) are coaxially connected,
Entire power generator has the advantages that compact-sized, dry type oil-free, powergenerationcycleefficiency height and smooth running.
Description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is a kind of enclosed twin-screw expander power generator schematic diagram.
Fig. 2 is the screw rotor schematic diagram of the twin-screw expander (3) with big expansion ratio.
Fig. 3 is the profile molded line schematic diagram of the cam follower of lobed rotor pump (10).
In figure：1-heat exchanger；2-the first valve；3-the twin-screw expanders with big expansion ratio；4-a pair of of synchronous gears
Wheel；5-first shaft couplings；6-generators；7-the second valve；8-condensers；9-third valves；10-lobed rotor pumps；11—
Second shaft coupling；12-third shaft couplings；13-the four valve；The dextrorotation cone of the 301-twin-screw expanders with big expansion ratio
Shape screw rotor；The left-handed conical screw rotor of the 302-twin-screw expanders with big expansion ratio；The of 1001-lobe pumps
One cam follower；Second cam follower of 1002-lobe pumps.
Specific implementation mode
A kind of enclosed twin-screw expander power generator schematic diagram as shown in Figure 1, power generator is by heat exchanger (1),
One valve (2), the twin-screw expander (3) with big expansion ratio, a pair of of synchromesh gear (4), first shaft coupling (5), generator
(6), the second valve (7), condenser (8), third valve (9), lobed rotor pump (10), second shaft coupling (11), third shaft coupling
(12) it is formed with the 4th valve (13)；Cycle fluid is initially full liquid phase ammonia water mixture, after lobed rotor pump (10) supercharging, into
Enter heat exchanger (1) and carry out heat exchange with heat source, cycle fluid temperature increases, and full liquid phase ammonia water mixture becomes gas-liquid two-phase ammonium hydroxide
Mixture, the ratio by setting ammonia and water change cycle fluid boiling point, control the gas-liquid volume of gas-liquid two-phase ammonia water mixture
Than in suitable range；Gas-liquid two-phase ammonia water mixture after heat absorption enters the twin-screw expander (3) with big expansion ratio
Expansion work is carried out, cycle fluid temperature reduces, and becomes full gas phase ammonia water mixture；Full gas phase ammonia water mixture after expansion into
Enter condenser (8), is condensed in condenser (8) interior cycle fluid and helps liquid phase ammonia aqueous mixtures, then by lobed rotor pump (10)
After supercharging, heat exchange is carried out into heat exchanger (1) and heat source, completes the working cycles of a cycle；Pass through the second valve (7) and
Three valves (9) control the pressure in condenser (8)；In the course of work, twin-screw expander (3) the band moving cam with big expansion ratio
Impeller pump (10) and generator (6) rotate together, and generate electricity.
What regulation screw rotor rotation direction followed right-hand rule from low-pressure side direction high-pressure side is dextrorotation, otherwise screw rod turns
Sub- rotation direction is left-handed.The first cam follower (1001) of lobed rotor pump (10) and the twin-screw expander with big expansion ratio
(3) dextrorotation conical screw rotor (301) is connected by second shaft coupling (11), and eccentric axial line overlaps；Lobed rotor pump
(10) the left-handed conical screw rotor of the second cam follower (1002) and the twin-screw expander (3) with big expansion ratio
(302) it is connected by third shaft coupling (12), eccentric axial line overlaps；The right side of twin-screw expander (3) with big expansion ratio
Rotation conical screw rotor (301) and left-handed conical screw rotor (302) are connected with a pair of of synchromesh gear (4)；With big expansion ratio
The dextrorotation conical screw rotor (301) of twin-screw expander (3) be connected by first shaft coupling (5) with generator (6), axle center
Center line overlaps.
The screw rotor schematic diagram of twin-screw expander (3) with big expansion ratio as shown in Figure 2 has big expansion ratio
Twin-screw expander (3) be made of dextrorotation conical screw rotor (301) and left-handed conical screw rotor (302), dextrorotation taper
Screw rotor (301) from inlet high pressure end to outlet low-pressure end screw pitch gradually increase, radius of addendum R1It is linear with axial position
Increase, root radius R3Linearly reduce in proportion with axial position, R1+R3Numerical value is constant；Left-handed conical screw rotor (302)
It can be realized with dextrorotation conical screw rotor (301) at a fully engaged.
The profile molded line schematic diagram of the cam follower of lobed rotor pump (10) as shown in Figure 3, lobed rotor pump (10) by
First cam follower (1001) and the second cam follower (1002) composition；The profile molded line of first cam follower (1001) is not present
Rough tie point；Rectangular coordinate system, the first cam follower are established with the centre of gyration point O of the first cam follower (1001)
(1001) profile molded line is all symmetrical about x-axis and y-axis, and 1/4 profile molded line of the first cam follower (1001) is by 4 sections of head and the tail light
The curve of slip forms, and is followed successively by：Addendum circle arc AB, circular arc BC, the equidistant curve CD of cycloid, tooth root circular arc DE；First is convex
The profile molded line for taking turns rotor (1001) is identical with the profile molded line of the second cam follower (1002)；Lobed rotor pump (10) exists
Two rotors synchronize in incorgruous dual AC power movement there is no the closing working chamber that volume is gradually reduced, and avoid going out for tired liquid phenomenon
It is existing；The first cam follower (1001) of lobed rotor pump (10) and the centre-to-centre spacing of the second cam follower (1002) and with big expansion
The centre-to-centre spacing phase of the dextrorotation conical screw rotor (301) and left-handed conical screw rotor (302) of the twin-screw expander (3) of ratio
Together.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (4)
1. a kind of enclosed twin-screw expander power generator, by heat exchanger (1), the first valve (2), the twin-screw with big expansion ratio
Expanding machine (3), a pair of of synchromesh gear (4), first shaft coupling (5), generator (6), the second valve (7), condenser (8), third valve
(9), lobed rotor pump (10), second shaft coupling (11), third shaft coupling (12) and the 4th valve (13) composition；It is characterized in that：It follows
Ring working medium is initially full liquid phase ammonia water mixture, and after lobed rotor pump (10) supercharging, heat is carried out into heat exchanger (1) and heat source
It exchanges, cycle fluid temperature increases, and full liquid phase ammonia water mixture becomes gas-liquid two-phase ammonia water mixture, by setting ammonia and water
Ratio changes cycle fluid boiling point, and the gas liquid ratio of control loop working medium is in suitable range；Gas-liquid two-phase ammonium hydroxide after heat absorption
Mixture enters the twin-screw expander (3) with big expansion ratio and carries out expansion work, and cycle fluid temperature reduces, and becomes full gas
Phase ammonia water mixture；Full gas phase ammonia water mixture after expansion enters condenser (8), and in condenser (8), interior cycle fluid is cold
It congeals into full liquid phase ammonia water mixture, then after being pressurized by lobed rotor pump (10), heat exchange is carried out into heat exchanger (1) and heat source,
Complete the working cycles of a cycle；The pressure in condenser (8) is controlled by the second valve (7) and third valve (9)；The course of work
In, the twin-screw expander (3) with big expansion ratio drives lobed rotor pump (10) and generator (6) to rotate together, and is sent out
Electricity.
2. a kind of enclosed twin-screw expander power generator as described in claim 1, it is characterized in that：It is double with big expansion ratio
Screw expander (3) is made of dextrorotation conical screw rotor (301) and left-handed conical screw rotor (302), dextrorotation conical screw
Rotor (301) gradually increases from inlet high pressure end to outlet low-pressure end screw pitch, radius of addendum R1Linearly increase with axial position,
Root radius R3Linearly reduce in proportion with axial position, R1+R3Numerical value is constant；Left-handed conical screw rotor (302) and dextrorotation
Conical screw rotor (301) can be realized at a fully engaged.
3. a kind of enclosed twin-screw expander power generator as described in claim 1, it is characterized in that：Lobed rotor pump (10) by
First cam follower (1001) and the second cam follower (1002) composition；The profile molded line of first cam follower (1001) is not present
Rough tie point；Rectangular coordinate system, the first cam follower are established with the centre of gyration point O of the first cam follower (1001)
(1001) profile molded line is all symmetrical about x-axis and y-axis, and 1/4 profile molded line of the first cam follower (1001) is by 4 sections of head and the tail light
The curve of slip forms, and is followed successively by：Addendum circle arc AB, circular arc BC, the equidistant curve CD of cycloid, tooth root circular arc DE；First is convex
The profile molded line for taking turns rotor (1001) is identical with the profile molded line of the second cam follower (1002)；Lobed rotor pump (10) exists
Two rotors synchronize in incorgruous dual AC power movement there is no the closing working chamber that volume is gradually reduced, and avoid going out for tired liquid phenomenon
It is existing；The first cam follower (1001) of lobed rotor pump (10) and the centre-to-centre spacing of the second cam follower (1002) and with big expansion
The centre-to-centre spacing phase of the dextrorotation conical screw rotor (301) and left-handed conical screw rotor (302) of the twin-screw expander (3) of ratio
Together.
4. a kind of enclosed twin-screw expander power generator as described in claim 1, it is characterized in that：Lobed rotor pump (10)
First cam follower (1001) and the dextrorotation conical screw rotor (301) of the twin-screw expander (3) with big expansion ratio pass through
Second shaft coupling (11) is connected, and eccentric axial line overlaps；The second cam follower (1002) of lobed rotor pump (10) with big
The left-handed conical screw rotor (302) of the twin-screw expander (3) of expansion ratio is connected by third shaft coupling (12), eccentric axial
Line overlaps；The dextrorotation conical screw rotor (301) and left-handed conical screw rotor of twin-screw expander (3) with big expansion ratio
(302) it is connected with a pair of of synchromesh gear (4)；The dextrorotation conical screw rotor of twin-screw expander (3) with big expansion ratio
(301) it is connected by first shaft coupling (5) with generator (6), eccentric axial line overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820098416.5U CN207879397U (en) | 2018-01-22 | 2018-01-22 | A kind of enclosed twin-screw expander power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820098416.5U CN207879397U (en) | 2018-01-22 | 2018-01-22 | A kind of enclosed twin-screw expander power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207879397U true CN207879397U (en) | 2018-09-18 |
Family
ID=63507561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820098416.5U Expired - Fee Related CN207879397U (en) | 2018-01-22 | 2018-01-22 | A kind of enclosed twin-screw expander power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207879397U (en) |
-
2018
- 2018-01-22 CN CN201820098416.5U patent/CN207879397U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20220122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |