CN206267895U - Every the cogeneration turbine that level adjustment is drawn gas - Google Patents
Every the cogeneration turbine that level adjustment is drawn gas Download PDFInfo
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- CN206267895U CN206267895U CN201621307437.0U CN201621307437U CN206267895U CN 206267895 U CN206267895 U CN 206267895U CN 201621307437 U CN201621307437 U CN 201621307437U CN 206267895 U CN206267895 U CN 206267895U
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- extraction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model is related to steam turbine technology field, more particularly to a kind of cogeneration turbine drawn gas every level adjustment, including a steam turbine, steam turbine is provided with air intake, steam drain and extraction opening, and extraction opening is between the turbine stage of steam turbine, extraction opening is connected with the extraction line for leading to heat supply network, and the first extraction control valve is provided with extraction line;Steam drain connects blow-off line, and the second extraction control valve is provided with blow-off line.Realize being adjusted every level by the first extraction control valve and the mutual cooperation of the second extraction control valve and draw gas, extraction opening only is set between two turbine stages of steam turbine, avoid and set inside steam turbine rotating barrier or regulating valve and draw gas realizing adjustment, save the span between steam turbine turbine stage, more pressure stages can be set, ensure the flow efficiency of steam turbine, improve the internal efficiency of Steam Turbine, and the design difficulty of steam turbine is effectively reduced, the structure of steam turbine is simplified.
Description
Technical field
The utility model is related to steam turbine technology field, more particularly to a kind of cogeneration steamer drawn gas every level adjustment
Machine.
Background technology
Turbo-generator Set be it is a kind of convert thermal energy into mechanical energy and then be converted into the energy conversion device of electric energy, be electricity
One of crucial power-equipment stood in building.High temperature, the high steam produced by boiler, by steam turbine, by heat energy and pressure
Power potential energy converting and energy, the mechanical energy as steam turbine drives the acting of turbine rotor output shaft, and the mechanical energy passes through turbine rotor
Output shaft passes to generator, so as to convert mechanical energy into electric energy, therefore, steam turbine is commonly referred to as " bright as source motivation
Source ".
Cogeneration Turbo-generator Set refers to again in steamer while steam turbine drives generator to power network conveying electric energy
Extract a part of steam at the suitable flow passing position of machine out and enter heat supply network heat supply, another part steam continues to be expanded in turbine runner
Work done drives the rotor of output shaft axle acting of steam turbine, and steam discharge the heat release of level pressure constant temperature and condenses into water, finally, then enters in condenser
Enter in the middle of thermodynamic cycle.
Traditional method of drawing gas through-flow is matched with demand pressure parameter of drawing gas in the Turbine Steam cylinder interior of steam turbine
Locate to set a rotating barrier or regulating valve before pressure stage to realize that the pressure of steam is extracted in adjustment, this method is by the through-flow portion of cylinder
Graduation is divided into two parts, breaks the ring continuity of original through-flow pressure stage, and the structure design to cylinder causes large effect, increases
Add the complexity of steam turbine structure, the setting of rotating barrier or seat cylinder valve will also substantially increase the span demand to unit,
Also the setting quantity of pressure stage therefore can be reduced sometimes for span limitation, so that the through-flow internal efficiency reduction of Steam Turbine.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of internal efficiency cogeneration drawn gas every level adjustment high
Steam turbine, to overcome the drawbacks described above of prior art.
In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that:A kind of heat drawn gas every level adjustment
CCHP steam turbine, including a steam turbine, steam turbine are provided with air intake, steam drain and extraction opening, and extraction opening is located at
Between the turbine stage of steam turbine, extraction opening is connected with the extraction line for leading to heat supply network, first is provided with extraction line and is taken out
Steam control valve;Steam drain connects blow-off line, and the second extraction control valve is provided with blow-off line.
Preferably, extraction check valve is additionally provided with extraction line, extraction check valve is located at the upper of the first extraction control valve
Trip.
Preferably, the upstream of extraction check valve is additionally provided with the safety valve that draws gas on extraction line.
Preferably, air intake connection steam inlet pipe road, is provided with into steam control valve on steam inlet pipe road.
Preferably, steam turbine is intermediate pressure cylinder, and high pressure cylinder and low is also included every the cogeneration turbine that draws gas of level adjustment
Cylinder pressure, blow-off line is the connecting pipe between intermediate pressure cylinder and low pressure (LP) cylinder.
Preferably, high pressure cylinder is to close cylinder or the individually structure of point cylinder with intermediate pressure cylinder.
Preferably, shown low pressure (LP) cylinder is double split flow structure or single current structure.
Preferably, steam turbine is high pressure cylinder, and intermediate pressure cylinder and low is also included every the cogeneration turbine that draws gas of level adjustment
Cylinder pressure.
Preferably, high pressure cylinder is the structure for individually dividing cylinder, intermediate pressure cylinder and the structure that low pressure (LP) cylinder is conjunction cylinder.
Preferably in high pressure cylinder and intermediate pressure cylinder are the structure for closing cylinder, and low pressure (LP) cylinder is double split flow structure or single current structure.
Compared with prior art, the utility model has significant progressive:Only between two turbine stages of steam turbine
Extraction opening is set, the first extraction control valve is arranged on the extraction line being connected with extraction opening, the second extraction control valve is set
On the blow-off line of steam turbine, realized every level by the mutual cooperation of the first extraction control valve and the second extraction control valve
Adjustment is drawn gas, and be thus avoid and set inside steam turbine rotating barrier or regulating valve and draw gas realizing adjustment, so as to save
Span between steam turbine turbine stage, can set more pressure stages, it can be ensured that the flow efficiency of steam turbine, from
And the efficiency of Steam Turbine is improve, and the design difficulty of steam turbine is effectively reduced, simplify the structure of steam turbine.
Realize that the principle that adjustment is drawn gas is " bivalve regulation ", i.e., using the first regulating valve and the combine regulation of the second regulating valve
The adjustable steam extraction of heat supply network is realized, specific regulation process is as follows:When heat supply network needs the heat supply amount of drawing gas smaller, it is only necessary to open
One extraction control valve, now, the flow of heat supply network branch road is removed by the first governor valve control, and aperture more big flow is bigger;Work as heat supply network
When needing the heat supply amount of drawing gas more, the first regulating valve standard-sized sheet cannot still meet heat supply network to heating load the need for when, at this point it is possible to
The second extraction control valve is turned down, pressure will be suppressed height at extraction opening, so that so that more vapour are shunted to heat supply network, so as to realize
The adjustable steam extraction of heat supply network.
Brief description of the drawings
Fig. 1 is the structure of the steam turbine of the cogeneration turbine drawn gas every level adjustment of the utility model embodiment one
Schematic diagram.
Fig. 2 is a kind of structural representation of cogeneration turbine drawn gas every level adjustment of the utility model embodiment two.
Fig. 3 is the cogeneration turbine another kind structural representation drawn gas every level adjustment of the utility model embodiment two
Figure.
Fig. 4 is a kind of structural representation of cogeneration turbine drawn gas every level adjustment of the utility model embodiment three.
Fig. 5 is the cogeneration turbine another kind structural representation drawn gas every level adjustment of the utility model embodiment three
Figure.
In figure:
P, steam turbine
P1, air intake P2, steam drain P3, extraction opening
10th, extraction line 20, blow-off line 30, steam inlet pipe road
1st, the first extraction control valve 2, the second extraction control valve 3, draw gas safety valve
4th, extraction check valve 5, enter steam control valve 6, heat supply network
HP, high pressure cylinder IP, intermediate pressure cylinder LP, low pressure (LP) cylinder
Specific embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.These implementation methods are only
For illustrating the utility model, and it is not limitation of the utility model.
, it is necessary to illustrate in description of the present utility model, term " first ", " second " are only used for describing purpose, and
It is not intended that indicating or implying relative importance.Unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or it is integrally connected;It can be machine
Tool is connected, or electrically connected;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, can as the case may be understand above-mentioned term in this reality
With the concrete meaning in new.
Embodiment one
As shown in figure 1, a kind of embodiment of the cogeneration turbine drawn gas every level adjustment of the present utility model.
The cogeneration turbine drawn gas every level adjustment of the present embodiment one includes a steam turbine P, on steam turbine P
It is provided with air intake P1, steam drain P2 and extraction opening P3.
Wherein, air intake P1 connections steam inlet pipe road 30, from steam inlet pipe road 30 to being passed through steam in steam turbine 9.Entering vapour
Pipeline 30 is provided with into steam control valve 5, enter steam control valve 5 for adjust control the quantity of steam that is passed through in steam turbine 9.
Between the turbine stage of steam turbine 9, extraction opening P3's extraction opening P3 is connected with extraction line 10, extraction line
10 lead to heat supply network 6, extract some vapor inside steam turbine 9 by extraction line 10, and send into the heat supply of heat supply network 6.In extraction steam pipe
Road 10 is provided with the first extraction control valve 1, can be to the steam flow of extraction in extraction line 10 by the first extraction control valve 1
It is controlled regulation.
Meanwhile, steam drain P2 connection blow-off lines 20 are provided with the second extraction control valve 2, by the on blow-off line 20
The regulation of the aperture size of two extraction control valve 2, can carry out being adjusted every level to the steam pressure at extraction opening P3 in steam turbine 9
Section.
Thus, realize being adjusted every level by the mutual cooperation of the first extraction control valve 1 and the second extraction control valve 2 and draw gas,
The pressure parameter and heat of extraction steam in extraction line 10 to the adjustment of extraction steam pressure parameter in extraction line 10, can be made
The demand steam pressure match parameters of net 6, so as to meet the heating demand of heat supply network 6.
Further, extraction check valve 4 is additionally provided with extraction line 10, extraction check valve 4 is located at the first extraction control valve 1
Upstream.Further, the present embodiment one is additionally provided with the safety valve 3 that draws gas on extraction line 10, and the safety valve 3 that draws gas is inverse positioned at drawing gas
The only upstream of valve 4.Draw gas the safety of safety valve 3 and extraction check valve 4 steam-turbine unit when being used to ensure that extraction line 10 works.
Specifically, the principle of the cogeneration turbine adjustable steam extraction drawn gas every level adjustment of the present embodiment one is:Steam
Extraction opening P3 on vapour turbine 9 is located at place before the turbine stage with the demand steam pressure match parameters of heat supply network 6 and (or is arranged on slightly higher
After for certain first class pressure level of heating network pressure).When there is no heat demand, the standard-sized sheet of the second extraction control valve 2, extraction check valve
4 and first extraction control valve 1 close, steam turbine be in pure condensate operating mode;When heat supply network 6 has heat demand, extraction check valve 4 is opened
Open, the first extraction control valve 1 is opened so that some vapor inside steam turbine 9 is into extraction line 10 and being passed through heat supply network 6
Middle heat supply.When the amount of drawing gas is smaller, it is only necessary to the flow of extraction line 10 is controlled by the first extraction control valve 1, aperture is bigger
Flow is bigger;With the increase of the amount of drawing gas demand, the reduction of pressure at the extraction opening P3 of steam turbine 9 and do not reach the need of heat supply network 6
When the need for asking steam pressure parameter, the standard-sized sheet of the first extraction control valve 1 and cannot still meeting heat supply network 6 to heating load, now can be with
Turn the aperture of the second extraction control valve 2 down, increase the pressure at the extraction opening P3 of steam turbine 9 by suppressing, until reaching heat
The demand steam pressure parameter of net 6, also so as to further increase the heating load to heat supply network 6.Thus, also it is achieved that every level
Adjustable steam extraction.When the system failure, when extraction opening P3 chamber pressures exceed safety value, the safety valve 3 that draws gas opens pressure release, from
And, realize the purpose of protection unit safety.
Embodiment two
As shown in Figures 2 and 3, second implementation of the cogeneration turbine drawn gas every level adjustment of the present utility model
Example.
The present embodiment two includes high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder every the cogeneration turbine that level adjustment is drawn gas
LP, and intermediate pressure cylinder IP is the steam turbine P described in embodiment one, i.e., set extraction opening between the turbine stage of intermediate pressure cylinder IP,
The extraction opening is connected with the extraction line 10 for leading to heat supply network 6, is sequentially provided with peace of drawing gas on extraction line 10 from upstream to downstream
Full valve 3, the extraction control valve 1 of extraction check valve 4 and first;In the blow-off line 20 of intermediate pressure cylinder IP, i.e. intermediate pressure cylinder IP and low pressure (LP) cylinder
Connecting pipe between LP is provided with the second extraction control valve 2.By the first extraction control valve 1 and the phase of the second extraction control valve 2
Mutually coordinate and realize being drawn gas every level adjustment for intermediate pressure cylinder IP.
In the present embodiment two, the structure of high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder LP is not limited to, and can use high pressure
Cylinder HP and intermediate pressure cylinder IP individually divides the structure of cylinder, as shown in Figure 2;The knot of cylinder can also be closed using high pressure cylinder HP and intermediate pressure cylinder IP
Structure, as shown in Figure 3.Low pressure (LP) cylinder LP can use double split flow structure, it would however also be possible to employ single current structure.
Embodiment three
As shown in Figure 4 and Figure 5, the third implementation of the cogeneration turbine drawn gas every level adjustment of the present utility model
Example.
The present embodiment three includes high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder every the cogeneration turbine that level adjustment is drawn gas
LP, and high pressure cylinder HP is the steam turbine P described in embodiment one, i.e., set extraction opening between the turbine stage of high pressure cylinder HP,
The extraction opening is connected with the extraction line 10 for leading to heat supply network 6, is sequentially provided with peace of drawing gas on extraction line 10 from upstream to downstream
Full valve 3, the extraction control valve 1 of extraction check valve 4 and first;The second extraction control valve is provided with the blow-off line 20 of high pressure cylinder HP
2.Being drawn gas every level adjustment for high pressure cylinder HP is realized by the mutual cooperation of the first extraction control valve 1 and the second extraction control valve 2.
In the present embodiment three, the structure of high pressure cylinder HP, intermediate pressure cylinder IP and low pressure (LP) cylinder LP is not limited to, and can use high pressure
Cylinder HP individually divides the structure that cylinder, intermediate pressure cylinder IP and low pressure (LP) cylinder LP close cylinder, as shown in Figure 4;High pressure cylinder HP and middle pressure can also be used
It is the structure of double split flow that cylinder IP closes cylinder, low pressure (LP) cylinder LP, as shown in figure 5, certainly, low pressure (LP) cylinder LP can also be single current structure.
In sum, the cogeneration turbine drawn gas every level adjustment of the present utility model, only in steam turbine P (middle pressures
Cylinder IP or high pressure cylinder HP) two turbine stages between set extraction opening P3, the first extraction control valve 1 is arranged on and extraction opening P3
On the extraction line 10 of connection, the second extraction control valve 2 is arranged on the gland steam exhauster of steam turbine P (intermediate pressure cylinder IP or high pressure cylinder HP)
On road 20, realize to be adjusted every level by the first extraction control valve 1 and the mutual cooperation of the second extraction control valve 2 and draw gas, thus
Avoid and set inside the steam turbine P (intermediate pressure cylinder IP or high pressure cylinder HP) rotating barrier or regulating valve and draw gas realizing adjustment,
So as to save the span between steam turbine P (intermediate pressure cylinder IP or high pressure cylinder HP) turbine stage, more turbine pressures can be set
Power level ensures the flow efficiency of steam turbine P (intermediate pressure cylinder IP or high pressure cylinder HP), so as to improve the interior effect of Steam Turbine
Rate, and the design difficulty of steam turbine is effectively reduced, simplify the structure of steam turbine.
The above is only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of the art
Member for, on the premise of the utility model know-why is not departed from, some improvement and replacement can also be made, these improve and
Replacement also should be regarded as protection domain of the present utility model.
Claims (10)
1. it is a kind of that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that including a steam turbine (P), the steam
Turbine (P) is provided with air intake (P1), steam drain (P2) and extraction opening (P3), and the extraction opening (P3) is saturating located at the steam
Between the turbine stage of flat (P), the extraction opening (P3) is connected with the extraction line (10) for leading to heat supply network (6), is drawn gas described
Pipeline (10) is provided with the first extraction control valve (1);The steam drain (P2) connects blow-off line (20), in the blow-off line
(20) it is provided with the second extraction control valve (2).
2. it is according to claim 1 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that in the extraction steam pipe
Extraction check valve (4) is additionally provided with road (10), the extraction check valve (4) is positioned at the upstream of first extraction control valve (1).
3. it is according to claim 2 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that in the extraction steam pipe
The upstream of the extraction check valve (4) is additionally provided with the safety valve that draws gas (3) on road (10).
4. it is according to claim 1 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that the air intake
(P1) connection steam inlet pipe road (30), is provided with into steam control valve (5) on the steam inlet pipe road (30).
5. as claimed in any of claims 1 to 4 that the cogeneration turbine for drawing gas is adjusted every level, its feature exists
In the steam turbine (P) is intermediate pressure cylinder (IP), and the cogeneration turbine drawn gas every level adjustment also includes high pressure cylinder
(HP) and low pressure (LP) cylinder (LP), the blow-off line (20) is the communicating pipe between medium pressure cylinder (IP) and the low pressure (LP) cylinder (LP)
Road.
6. it is according to claim 5 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that the high pressure cylinder
(HP) it is to close cylinder or the individually structure of point cylinder with medium pressure cylinder (IP).
7. it is according to claim 5 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that shown low pressure (LP) cylinder
(LP) it is double split flow structure or single current structure.
8. as claimed in any of claims 1 to 4 that the cogeneration turbine for drawing gas is adjusted every level, its feature exists
In the steam turbine (P) is high pressure cylinder (HP), and the cogeneration turbine drawn gas every level adjustment also includes intermediate pressure cylinder
And low pressure (LP) cylinder (LP) (IP).
9. it is according to claim 8 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that the high pressure cylinder
(HP) it is the structure of individually dividing cylinder, medium pressure cylinder (IP) and the low pressure (LP) cylinder (LP) are the structure for closing cylinder.
10. it is according to claim 8 that the cogeneration turbine for drawing gas is adjusted every level, it is characterised in that the high pressure cylinder
(HP) with medium pressure cylinder (IP) be close cylinder structure, the low pressure (LP) cylinder (LP) be double split flow structure or single current structure.
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CN201621307437.0U CN206267895U (en) | 2016-11-30 | 2016-11-30 | Every the cogeneration turbine that level adjustment is drawn gas |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106523047A (en) * | 2016-11-30 | 2017-03-22 | 上海电气电站设备有限公司 | Cogeneration steam turbine capable of regulating steam extraction every other stage |
-
2016
- 2016-11-30 CN CN201621307437.0U patent/CN206267895U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106523047A (en) * | 2016-11-30 | 2017-03-22 | 上海电气电站设备有限公司 | Cogeneration steam turbine capable of regulating steam extraction every other stage |
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