CN217107144U - Steam turbine intermediate pressure cylinder steam exhaust cascade utilization synthesizes energy supply system - Google Patents
Steam turbine intermediate pressure cylinder steam exhaust cascade utilization synthesizes energy supply system Download PDFInfo
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- CN217107144U CN217107144U CN202220214224.2U CN202220214224U CN217107144U CN 217107144 U CN217107144 U CN 217107144U CN 202220214224 U CN202220214224 U CN 202220214224U CN 217107144 U CN217107144 U CN 217107144U
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Abstract
The utility model discloses a steam turbine intermediate pressure cylinder steam exhaust cascade utilization comprehensive energy supply system, which comprises a steam turbine steam extraction system, a screw machine power generation system and an electric boiler steam generation system; the steam extraction system of the steam turbine comprises a steam turbine intermediate pressure cylinder, a steam outlet of the steam turbine intermediate pressure cylinder is communicated with a low pressure cylinder, the low pressure cylinder is connected with a generator, the steam outlet of the low pressure cylinder is connected with a condenser, and the steam outlet of the steam turbine intermediate pressure cylinder is also connected with a screw machine power generation system; the screw machine power generation system comprises a screw machine, the screw machine is connected with a small power generator, an exhaust port of the screw machine is communicated to the heat supply network heater, and the small power generator is connected with the electric boiler steam generation system; the electric boiler steam generating system comprises an electric boiler, and the electric boiler is connected with a booster pump. The whole system is safe and reliable, has strong capability of adapting to variable working conditions, has standby switching means when the steam generation system and the power generation system break down, and has higher popularization value under the current double-carbon background.
Description
Technical Field
The utility model relates to a medium pressure cylinder exhaust waste heat complementary energy recycle system, in particular to steam turbine medium pressure cylinder exhaust cascade utilization synthesizes energy supply system.
Background
At present, with the continuous development of new energy, the power generation load of a traditional thermal power generating unit is limited, the industrial steam extraction parameters of the power generating unit under low load hardly meet the requirements of external industrial steam users, on the other hand, the steam extraction pressure of a large number of heat supply units is high, direct temperature and pressure reduction heat supply is realized, the energy waste is great, the surplus energy of steam extraction waste heat can be recovered by a conventional small back pressure power generating unit for power generation, the working condition change adaptability is poor, the newly increased power generation capacity cannot be connected to the internet, and the application is limited. The contradiction that the residual energy of the heat supply and steam extraction waste heat of the unit cannot be reasonably utilized and cannot be output after utilization is generated under the current background.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a steam turbine intermediate pressure cylinder steam extraction cascade utilization comprehensive energy supply system that structural design is reasonable.
The utility model provides a technical scheme that above-mentioned problem adopted is: a steam turbine intermediate pressure cylinder steam exhaust cascade utilization comprehensive energy supply system is characterized by comprising a steam turbine steam extraction system, a screw machine power generation system and an electric boiler steam generation system;
the steam extraction system of the steam turbine comprises a steam turbine intermediate pressure cylinder, a steam exhaust port of the steam turbine intermediate pressure cylinder is communicated with a low pressure cylinder, the low pressure cylinder is connected with a generator, the steam exhaust port of the low pressure cylinder is connected with a condenser, and the steam exhaust port of the steam turbine intermediate pressure cylinder is also connected with a screw machine power generation system;
the screw machine power generation system comprises a screw machine, a steam inlet of the screw machine is communicated with a steam outlet of a steam turbine intermediate pressure cylinder, the screw machine is connected with a small power generator, an exhaust port of the screw machine is communicated with a heat supply network heater, and the small power generator is connected with an electric boiler steam generation system;
the electric boiler steam generation system comprises an electric boiler, the electric boiler is connected with a small generator, and the electric boiler is further connected with a pressure pump.
Furthermore, the exhaust steam of the steam turbine intermediate pressure cylinder is communicated to the low pressure cylinder through the intermediate pressure cylinder communication pipe, the generator generates on-line electric quantity, the exhaust steam which does work is condensed into condensed water through the condenser, the exhaust steam of the steam turbine intermediate pressure cylinder is also communicated to the screw machine, the screw machine drives the small generator to do work to generate electric quantity, the exhaust steam which is exhausted after the screw machine does work enters the heating network heater, the electric boiler converts the electric energy generated by the small generator into heat energy through electric energy conversion, and the electric boiler heats the feed water of the pressure pump to produce steam with higher parameters for industrial use.
Furthermore, the screw machine is utilized to fully recover the waste heat and the complementary energy of the exhaust steam of the steam turbine intermediate pressure cylinder, and the variable working condition performance of the unit can be better adapted.
Furthermore, the electric quantity generated by the screw machine power generation system generates industrial steam through the electric boiler, and the industrial steam is supplemented to the steam extraction of the steam turbine intermediate pressure cylinder.
Furthermore, a water source of the steam generation system of the electric boiler directly comes from condensed water in the condenser.
Furthermore, the small generator is connected with the auxiliary power equipment, and when the steam generation system of the electric boiler breaks down, the small generator applies work to generate electric quantity to be directly supplied to the auxiliary power equipment.
Further, the steam outlet of the steam turbine intermediate pressure cylinder is connected with a temperature and pressure reducer, the temperature and pressure reducer is connected to the heat supply network heater, and when the screw machine power generation system breaks down, the steam discharged by the steam turbine intermediate pressure cylinder is supplied to the heat supply network heater after being subjected to temperature and pressure reduction through the temperature and pressure reducer.
Compared with the prior art, the utility model, have following advantage and effect:
the utility model has the advantages of reasonable design, combine the heat supply of unit extraction waste heat complementary energy with producing industrial steam, utilize screw rod machine electricity generation, electric boiler to produce industrial steam, realize the better utilization of heat supply extraction waste heat complementary energy.
The utility model discloses utilize the screw rod machine to have the performance of better adaptation variable operating mode, can fully retrieve unit extraction waste heat complementary energy, through setting up little generating set, turn into high-quality electric energy with unit extraction waste heat complementary energy, through the setting of electric boiler in the system, turn into the industrial steam of different parameters with the electric energy, replace unit industry extraction, send into the electric boiler behind the condensate pressurization through the force (forcing) pump that sets up in the system and produce industrial steam, realized heat supply unit extraction waste heat complementary energy recycle, industrial steam is produced simultaneously, the generating efficiency of unit has been improved, the economic benefits of whole factory has been increased, and entire system safe and reliable, the adaptation variable operating mode can the reinforce, under current double carbon background, possess higher spreading value.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the system of the present invention.
Fig. 2 is a schematic structural diagram of the system of the present invention when the steam generation system fails.
Fig. 3 is a schematic structural diagram of the system of the present invention when the screw machine power generation system fails.
In the figure: the system comprises a turbine intermediate pressure cylinder 1, a low pressure cylinder 2, a generator 3, a condenser 4, a screw machine 5, a small generator 6, an electric boiler 7, a pressure pump 8, a service electric device 9 and a temperature and pressure reducer 10.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 3, in the present embodiment, an integrated energy supply system for cascade utilization of steam discharged from a steam turbine intermediate pressure cylinder includes a steam turbine extraction system, a screw machine power generation system, and an electric boiler steam generation system;
the steam extraction system of the steam turbine comprises a steam turbine intermediate pressure cylinder 1, a steam outlet of the steam turbine intermediate pressure cylinder 1 is communicated with a low pressure cylinder 2, the low pressure cylinder 2 is connected with a generator 3, a steam outlet of the low pressure cylinder 2 is connected with a condenser 4, and the steam outlet of the steam turbine intermediate pressure cylinder 1 is also connected with a screw machine power generation system;
the screw machine power generation system comprises a screw machine 5, a steam inlet of the screw machine 5 is communicated with a steam outlet of a steam turbine intermediate pressure cylinder 1, the screw machine 5 is connected with a small generator 6, an exhaust port of the screw machine 5 is communicated with a heat supply network heater, and the small generator 6 is connected with an electric boiler steam generation system;
the electric boiler steam generating system comprises an electric boiler 7, the electric boiler 7 is connected with a small generator 6, and the electric boiler 7 is also connected with a booster pump 8.
In this embodiment, the exhaust steam of the turbine intermediate pressure cylinder 1 is communicated to the low pressure cylinder 2 through the intermediate pressure cylinder communicating pipe, the power generator 3 generates the power on the grid, the exhaust steam which does work is condensed into condensed water through the condenser 4, the exhaust steam of the turbine intermediate pressure cylinder 1 is also communicated to the screw machine 5, the screw machine 5 drives the small power generator 6 to do work to generate power, the exhaust steam which is exhausted after the screw machine 5 does work enters the heat supply network heater, the electric boiler 7 converts the electric energy generated by the small power generator 6 into heat energy through electric energy conversion, the heating pressure pump 8 supplies water, and steam with higher parameters is generated for industrial use.
In the embodiment, the screw machine 5 is used for fully recovering the waste heat and the complementary energy of the exhaust steam of the steam turbine intermediate pressure cylinder 1, and the variable working condition performance of the unit can be better adapted. The electric quantity generated by the screw machine power generation system generates industrial steam through the electric boiler 7 and is supplemented to the industrial steam extraction of the steam turbine intermediate pressure cylinder 1. The water source of the steam generation system of the electric boiler directly comes from the condensed water in the condenser 4. The small generator 6 is also connected with the service equipment 9, and when the steam generation system of the electric boiler breaks down, the small generator 6 does work to generate electric quantity to be directly supplied to the service equipment 9. The steam outlet of the steam turbine intermediate pressure cylinder 1 is also connected with a temperature and pressure reducing device 10, the temperature and pressure reducing device 10 is connected to a heat supply network heater, and when the screw machine power generation system breaks down, the steam discharged by the steam turbine intermediate pressure cylinder 1 is supplied to the heat supply network heater after being subjected to temperature and pressure reduction through the temperature and pressure reducing device 10.
As shown in fig. 1, the steam exhausted from the steam turbine intermediate pressure cylinder 1 with higher parameters is absorbed by the screw machine 5, the exhaust steam generated after the power generation by the waste heat and residual energy enters the heat supply network heater, the electric quantity generated by the small generator 6 is generated by the electric boiler 7, the steam with higher parameters replaces part of the industrial extraction steam of the unit, the waste heat and residual energy exhausted from the steam turbine intermediate pressure cylinder 1 is fully utilized, and the economy of the unit is remarkably improved.
As shown in fig. 2, when the electric boiler 7 or the booster pump 8 fails, the electric power generated by the small generator 6 directly enters the service power equipment 9 to replace part of the service power.
As shown in figure 3, when the screw machine 5 or the small generator 6 has a fault, the exhausted steam of the steam turbine intermediate pressure cylinder 1 directly enters the temperature and pressure reducing device 10 for reducing temperature and pressure and then enters the heating network heater to ensure the normal operation of heat supply.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only illustrations of the structure of the present invention. All equivalent changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions by those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A steam turbine intermediate pressure cylinder steam exhaust cascade utilization comprehensive energy supply system is characterized by comprising a steam turbine steam extraction system, a screw machine power generation system and an electric boiler steam generation system;
the steam extraction system of the steam turbine comprises a steam turbine intermediate pressure cylinder (1), a steam exhaust port of the steam turbine intermediate pressure cylinder (1) is communicated with a low pressure cylinder (2), the low pressure cylinder (2) is connected with a generator (3), the steam exhaust port of the low pressure cylinder (2) is connected with a condenser (4), and the steam exhaust port of the steam turbine intermediate pressure cylinder (1) is also connected with a screw machine power generation system;
the screw machine power generation system comprises a screw machine (5), a steam inlet of the screw machine (5) is communicated with a steam outlet of a steam turbine intermediate pressure cylinder (1), the screw machine (5) is connected with a small generator (6), an exhaust port of the screw machine (5) is communicated to a heat supply network heater, and the small generator (6) is connected with an electric boiler steam generation system;
the electric boiler steam generation system comprises an electric boiler (7), wherein the electric boiler (7) is connected with a small generator (6), and the electric boiler (7) is also connected with a pressure pump (8).
2. The steam turbine intermediate pressure cylinder steam exhaust cascade utilization integrated energy supply system according to claim 1, characterized in that the small generator (6) is further connected with an auxiliary power equipment (9).
3. The steam turbine intermediate pressure cylinder steam exhaust cascade utilization integrated energy supply system of claim 1, characterized in that the steam outlet of the steam turbine intermediate pressure cylinder (1) is further connected with a temperature and pressure reducing device (10), and the temperature and pressure reducing device (10) is connected to a heat supply network heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220214224.2U CN217107144U (en) | 2022-01-26 | 2022-01-26 | Steam turbine intermediate pressure cylinder steam exhaust cascade utilization synthesizes energy supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220214224.2U CN217107144U (en) | 2022-01-26 | 2022-01-26 | Steam turbine intermediate pressure cylinder steam exhaust cascade utilization synthesizes energy supply system |
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| CN217107144U true CN217107144U (en) | 2022-08-02 |
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| CN202220214224.2U Active CN217107144U (en) | 2022-01-26 | 2022-01-26 | Steam turbine intermediate pressure cylinder steam exhaust cascade utilization synthesizes energy supply system |
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- 2022-01-26 CN CN202220214224.2U patent/CN217107144U/en active Active
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