CN113294773A - Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit - Google Patents
Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit Download PDFInfo
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- CN113294773A CN113294773A CN202110777111.3A CN202110777111A CN113294773A CN 113294773 A CN113294773 A CN 113294773A CN 202110777111 A CN202110777111 A CN 202110777111A CN 113294773 A CN113294773 A CN 113294773A
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- condensate
- heat supply
- supply network
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D1/00—Steam central heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1003—Arrangement or mounting of control or safety devices for steam heating systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A condensed water and heat supply network hydrophobic water mixing system applied to a cogeneration unit relates to a condensed water and heat supply network hydrophobic water mixing system. The invention aims to solve the problems that the efficiency of the existing unit regenerative system is reduced, no water treatment device is arranged between the drainage of a heating heater and a deaerator, the water quality of the recycled water is reduced, the requirement of boiler water consumption is not met, and the hidden danger is brought to the safe operation of a boiler. The invention comprises a condensate system, a heat supply network drainage pipeline, a heat supply network drainage system, a condensate fine treatment system, a mixed pipe section and a temperature sensor, wherein the condensate system is connected with the heat supply network drainage system through the heat supply network drainage pipeline, the heat supply network drainage pipeline is connected with the condensate fine treatment system through the mixed pipe section, and the temperature sensor is arranged on the mixed pipe section. The invention is used for a steam turbine set condensed water and heat supply heater drainage water mixing system in the aspect of heat regeneration of a cogeneration set.
Description
Technical Field
The invention relates to a water mixing system, in particular to a water mixing system for condensate and heat supply network drainage of a cogeneration unit, and especially relates to application of a steam turbine unit condensate and heat supply heater drainage water mixing system in heat regeneration of the cogeneration unit.
Background
After the cogeneration unit heats in winter, because steam extraction or steam exhaust is used for heating, the back pressure exhaust volume of the low pressure cylinder is reduced, and the condensation water volume of the unit is reduced. The oxygen remover for removing oxygen by dewatering heating steam can be used for supplying water to boiler. Therefore, the efficiency of the unit regenerative system is reduced, and the water treatment device is not arranged between the drainage of the heating heater and the deaerator, so that the recycled water quality is reduced, the requirement on water consumption of the boiler is not met, and the potential hazard is brought to the safe operation of the boiler.
Disclosure of Invention
The invention aims to solve the problems that the efficiency of the existing unit regenerative system is reduced, no water treatment device exists between the drainage of a heating heater and a deaerator, the water quality of the recycled water is reduced, the requirement of boiler water consumption is not met, and the hidden danger is brought to the safe operation of a boiler. Based on the background, the invention aims to design a water mixing system for condensate water and heat supply network drainage of a cogeneration unit.
The technical scheme of the invention is as follows: the utility model provides a be applied to condensate water and hydrophobic muddy water system of heat supply network of combined heat and power generation unit, includes condensate system A, heat supply network drainage pipe B, heat supply network drainage system C, condensate fine-processing system D, mixed pipeline section 19 and temperature sensor 18, condensate system A passes through heat supply network drainage pipe B and is connected with heat supply network drainage system C, is connected through mixed pipeline section 19 between heat supply network drainage pipe B and the condensate fine-processing system D, and temperature sensor 18 installs on mixed pipeline section 19.
Compared with the prior art, the invention has the following effects:
1. the efficiency of the turbo generator unit is improved:
because the return water temperature of the heat supply network is higher, the temperature of the condensed water is increased after the return water is mixed with the condensed water of the unit, but the temperature is not higher than the allowable temperature of a fine treatment device, and the temperature is controlled to be about 60 ℃ after the return water is mixed with the condensed water. The temperature of the condensed water outlet of the condenser of most wet cooling units is about 50 ℃, the temperature of the condensed water after the condensed water is mixed with the drainage water of the heat supply network can be increased by 10 ℃, the heat exchange area of the low-pressure heater and the heat recovery steam extraction quantity of the steam turbine can be reduced, and the unit efficiency is improved.
2. Improving the quality of boiler feed water:
after the drainage of the heat supply network and the condensed water of the unit are mixed, the mixed water enters a fine treatment device for water quality treatment and is sent to a deaerator, and then is sent to a boiler through a boiler water feeding pump. Therefore, the drainage of the heat supply network has one more water treatment process, the quality of the boiler feed water is improved, and the boiler is safer to operate.
3. The system is simple, automatic control and convenient operation:
the water mixing process is automatically controlled, and a regulating valve is arranged on the drainage pipeline. The temperature sensor is arranged at the fine treatment inlet and linked with the regulating valve, so that the water temperature of the fine treatment inlet and the flow of the water drained by the heat supply network for mixing water can be accurately controlled. The invention can realize the conversion of the system by only starting and stopping a plurality of key valves without special operation, and the valves in the system are all provided with automatic control devices and only need to be started and stopped on a control panel. The operation of operating personnel is convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, and any reasonable combination of the specific embodiments is included.
The first embodiment is as follows: referring to fig. 1, the present embodiment is described, and includes a condensate system a, a heat supply network drain pipeline B, a heat supply network drain system C, a condensate polishing system D, a mixing pipe section 19, and a temperature sensor 18, the condensate system a is connected to the heat supply network drain system C through the heat supply network drain pipeline B, condensate system A wherein includes condenser 1, condensate flow measuring device 6 and two parallel pipe assembly, two parallel pipe assembly all are connected with condenser 1, condensate flow measuring device 6 is installed on the parallelly connected first pipeline 20 of two parallel pipe assembly, every parallel pipe assembly all includes condensate pump 2, condensate pump entry shutoff valve 3, condensate pump export check valve 4 and condensate pump export shutoff valve 5, condensate pump entry shutoff valve 3, condensate pump 2, condensate pump export check valve 4 and condensate pump export shutoff valve 5 install on the pipeline according to the direction of keeping away from condenser 1 in proper order. The heat supply network drain line B includes two condensate pipe shut-off valves 7, a condensate pipe regulating valve 8, and a condensate pipe regulating valve bypass valve 9, one condensate pipe shut-off valve 7, the condensate pipe regulating valve 8, and the other condensate pipe shut-off valve 7 are sequentially provided on the second pipe 21, the third pipe 22 is connected in parallel on the second pipe 21 outside the two condensate pipe shut-off valves 7, and the condensate pipe regulating valve bypass valve 9 is installed on the third pipe 22. The heat supply network drainage system C comprises a heat supply network heat exchanger drainage flow measuring device 13, two heat supply network pump assemblies and a heat supply network drainage pump removal oxygen device electric shutoff valve 17, the heat supply network heat exchanger drainage flow measuring device 13 is installed on a second pipeline 21, the two heat supply network pump assemblies are connected in series on the second pipeline 21, the heat supply network drainage pump removal oxygen device electric shutoff valve 17 is arranged on a water outlet section, each heat supply network pump assembly of the two heat supply network pump assemblies comprises a heat supply network drainage pump outlet shutoff valve 14, a heat supply network drainage pump outlet check valve 15 and a heat supply network drainage pump 16, and a water outlet end of the heat supply network drainage pump 16 is connected with the heat supply network drainage pump outlet check valve 15 and the heat supply network drainage pump outlet shutoff valve 14 on the pipelines in sequence and then connected to the second pipeline 21 in series. The condensate fine treatment system D comprises a condensate fine treatment device 10, two condensate fine treatment device inlet and outlet shutoff valves 11 and a condensate pump fine treatment device bypass valve 12, wherein the condensate pump fine treatment device bypass valve 12 is installed on a mixing pipe section 19, the condensate fine treatment device 10 is connected on the mixing pipe section 19 in parallel through the two condensate fine treatment device inlet and outlet shutoff valves 11, and the two condensate fine treatment device inlet and outlet shutoff valves 11 are positioned on the left side and the right side of the condensate pump fine treatment device bypass valve 12. The heat supply network drainage pipeline B is connected with the condensate fine treatment system D through a mixing pipe section 19, and the temperature sensor 18 is installed on the mixing pipe section 19.
The invention relates to a condensate and heat supply heater drainage water mixing system applied to a cogeneration unit, which utilizes a condensate fine treatment device in the unit condensate system to treat drainage of a heat supply network heater and then enters a deaerator to deaerate so as to supply water to a boiler. Therefore, the problem of boiler feed water quality can be solved, the efficiency of the regenerative system is improved, the steam quantity of the regenerative system is reduced, and the heat efficiency of the heat supply unit is increased.
The principle of the invention is as follows:
the unit condensed water and heat supply network drainage water mixing system consists of a pipeline and a pipe fitting from a condensed water pump outlet to a fine treatment device inlet, and a pipeline and a pipe fitting from a heat supply network drainage pump outlet to a fine treatment device inlet.
The condensed water enters a condensed water pump 2 from a condenser 1. The condensate pump 2 sends the condensate water into the fine processing device 10, and a pipeline between the condensate pump 2 and the condensate water sending fine processing device 10 is provided with a condensate pump outlet check valve 4, a condensate pump outlet shutoff valve 5, a condensate flow measuring device 6, a temperature sensor 18 and a condensate water fine processing device inlet and outlet shutoff valve 11.
The heat supply network drainage enters the condensate fine treatment device 10 after passing through a heat supply network drainage pump 16, a heat supply network heat exchanger drainage flow measuring device 13, a condensate pipeline shut-off valve 7, a condensate pipeline regulating valve 8, a temperature sensor 18 and a fine treatment inlet valve.
The condensed water and the drain water are converged and mixed at the mixing pipe section 19, the temperature sensor is arranged at the mixing section and linked with the condensed water pipeline regulating valve 8, and the water temperature of the mixing section is controlled within an allowable range by regulating the drain flow of the heat supply network, so that the purpose of protecting the fine processing device is achieved.
When the flow of the drainage of the heat supply network is larger than the flow required by the mixed water, the residual drainage can be directly led to the deaerator by removing the electric shutoff valve 17 of the oxygen generator through the heat supply network drainage pump.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a be applied to condensate water and hydrophobic muddy water system of heat supply network of combined heat and power generation unit which characterized in that: the device comprises a condensate system (A), a heat supply network drainage pipeline (B), a heat supply network drainage system (C), a condensate fine treatment system (D), a mixing pipe section (19) and a temperature sensor (18), wherein the condensate system (A) is connected with the heat supply network drainage system (C) through the heat supply network drainage pipeline (B), the heat supply network drainage pipeline (B) is connected with the condensate fine treatment system (D) through the mixing pipe section (19), and the temperature sensor (18) is installed on the mixing pipe section (19).
2. The water mixing system for draining condensed water and a heat supply network applied to the cogeneration unit according to claim 1, wherein the water mixing system comprises: condensate system (A) includes condenser (1), condensate flow measuring device (6) and two parallel tube subassemblies, two parallel tube subassemblies all are connected with condenser (1), condensate flow measuring device (6) are installed on first pipeline (20) after two parallel tube subassemblies are parallelly connected, every parallel tube subassembly all includes condensate pump (2), condensate pump entry shutoff valve (3), condensate pump export check valve (4) and condensate pump export shutoff valve (5), condensate pump entry shutoff valve (3), condensate pump (2), condensate pump export check valve (4) and condensate pump export shutoff valve (5) are installed on the pipeline according to the direction of keeping away from condenser (1) in proper order.
3. The water mixing system for draining condensed water and a heat supply network applied to the cogeneration unit according to claim 1, wherein the water mixing system comprises: the heat supply network drain pipeline (B) comprises two condensed water pipeline closing valves (7), a condensed water pipeline regulating valve (8) and a condensed water pipeline regulating valve bypass valve (9), one condensed water pipeline closing valve (7), the condensed water pipeline regulating valve (8) and the other condensed water pipeline closing valve (7) are sequentially arranged on the second pipeline (21), the third pipeline (22) is connected on the second pipeline (21) outside the two condensed water pipeline closing valves (7) in parallel, and the condensed water pipeline regulating valve bypass valve (9) is installed on the third pipeline (22).
4. The water mixing system for draining condensed water and a heat supply network applied to the cogeneration unit according to claim 1, wherein the water mixing system comprises: the heat supply network drainage system (C) comprises a heat supply network heat exchanger drainage flow measuring device (13), two heat supply network pump assemblies and a heat supply network drainage pump removal oxygen device electric shutoff valve (17), the heat supply network heat exchanger drainage flow measuring device (13) is installed on a second pipeline (21), the two heat supply network pump assemblies are connected in series on the second pipeline (21), and the heat supply network drainage pump removal oxygen device electric shutoff valve (17) is arranged on a water outlet section.
5. The water mixing system for draining condensed water and a heat supply network applied to the cogeneration unit according to claim 1, wherein the water mixing system comprises: each of the two heat network pump assemblies comprises a heat network drain pump outlet shut-off valve (14), a heat network drain pump outlet check valve (15) and a heat network drain pump (16), and the water outlet end of the heat network drain pump (16) is connected with the heat network drain pump outlet check valve (15) and the heat network drain pump outlet shut-off valve (14) on the pipeline in sequence and then connected to the second pipeline (21) in series.
6. The water mixing system for draining condensed water and a heat supply network applied to the cogeneration unit according to claim 1, wherein the water mixing system comprises: the condensate fine treatment system (D) comprises a condensate fine treatment device (10), two condensate fine treatment device inlet and outlet shutoff valves (11) and a condensate pump fine treatment device bypass valve (12), wherein the condensate pump fine treatment device bypass valve (12) is installed on a mixed pipe section (19), the condensate fine treatment device (10) is connected in parallel on the mixed pipe section (19) through the two condensate fine treatment device inlet and outlet shutoff valves (11), and the two condensate fine treatment device inlet and outlet shutoff valves (11) are positioned on the left side and the right side of the condensate pump fine treatment device bypass valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777111.3A CN113294773A (en) | 2021-07-09 | 2021-07-09 | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777111.3A CN113294773A (en) | 2021-07-09 | 2021-07-09 | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit |
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| Publication Number | Publication Date |
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| CN113294773A true CN113294773A (en) | 2021-08-24 |
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| CN202110777111.3A Pending CN113294773A (en) | 2021-07-09 | 2021-07-09 | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674585A (en) * | 2022-03-23 | 2022-06-28 | 华电电力科学研究院有限公司 | Heating capacity measuring method, device and system |
-
2021
- 2021-07-09 CN CN202110777111.3A patent/CN113294773A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674585A (en) * | 2022-03-23 | 2022-06-28 | 华电电力科学研究院有限公司 | Heating capacity measuring method, device and system |
| CN114674585B (en) * | 2022-03-23 | 2024-01-12 | 华电电力科学研究院有限公司 | Heat supply capacity measuring method, device and system |
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