CN113834344A - Water-replenishing atomization energy-saving device of condenser - Google Patents
Water-replenishing atomization energy-saving device of condenser Download PDFInfo
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- CN113834344A CN113834344A CN202111253645.2A CN202111253645A CN113834344A CN 113834344 A CN113834344 A CN 113834344A CN 202111253645 A CN202111253645 A CN 202111253645A CN 113834344 A CN113834344 A CN 113834344A
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- condenser
- water pipe
- water
- atomizing
- reposition
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- 238000000889 atomisation Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 230000003020 moisturizing effect Effects 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 16
- 239000013589 supplement Substances 0.000 abstract description 6
- 239000007921 spray Substances 0.000 description 11
- 230000001502 supplementing effect Effects 0.000 description 5
- 241000883990 Flabellum Species 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a water replenishing and atomizing energy-saving device for a condenser, which belongs to the technical field of power equipment assistance and comprises a water inlet pipe, a transverse water pipe and a vertical water pipe, wherein the water inlet pipe enters from the throat part of the condenser and is communicated with the transverse water pipe, and a row of vertical water pipes are arranged on the transverse water pipe. The technical problems of poor atomization effect and poor heat exchange effect of the existing equipment are solved, and the condenser is mainly used for water supplement.
Description
Technical Field
The invention relates to the technical field of electric auxiliary equipment, in particular to a water supplementing and atomizing energy-saving device for a condenser.
Background
The essence of the production process of a thermal power plant is to convert the chemical energy in the fuel into electrical energy through a series of processes. However, in these conversion processes, there are always heat losses of different quantities and causes, which ultimately results in only partial conversion of the chemical energy in the fuel into electrical energy. Among the losses, the loss of the heat sink is the largest, so it is a significant task to reduce the loss of the heat sink or to properly utilize the loss of the heat sink. The water replenishing atomization device is additionally arranged at the throat part of the condenser, so that the purposes of fully utilizing waste heat of exhaust steam, properly reducing the loss of a cold source, improving the vacuum of the condenser and further improving the economical efficiency of concentrated heat are achieved.
The condenser is a heat exchanger fully distributed with heat exchange pipes, circulating water is filled in the heat exchange pipes, and low-pressure steam is filled outside the heat exchange pipes. The condenser is mainly used in a power plant for establishing and maintaining a certain vacuum at the outlet of a steam turbine, so that steam is expanded to a specified condenser pressure in the steam turbine, the power of the steam turbine is increased, the circulating heat efficiency of a steam turbine unit is improved, simultaneously, exhaust steam is condensed into water and sent to a boiler for cyclic utilization, and the coal consumption of the boiler is reduced. The main indexes of the performance evaluation of the condenser are the vacuum degree of the condenser, the supercooling degree of condensed water and the oxygen content of the condensed water, and the problems of low vacuum degree of the condenser, large supercooling degree of the condensed water and corrosion of a heat exchange tube commonly exist in the existing domestic on-service unit of a thermal power plant, so that the economic operation of the unit is seriously influenced.
The condenser vacuum is created by the existence of an equilibrium pressure in the condenser between the two phases of steam and condensed water, which is proportional to the steam condensation temperature and represents the absolute pressure in the condenser. In the limit, therefore, the coolant water flow is high. The absolute limit pressure in the condenser is 0.0023Mpa (20 ℃ cooling water), and the condenser pressure is far lower than the atmospheric pressure, so that vacuum is formed.
The general operation experience of the condenser of the power station shows that: the vacuum of the condenser is reduced, and the steam consumption of the steam turbine is greatly increased. In addition, the reduction of the vacuum of the condenser can increase the temperature of the exhaust cylinder, cause the center offset of a bearing of the steam turbine and cause the vibration of the steam turbine in severe cases. Therefore, in actual operation of the thermal power plant, it is preferable to operate the condenser at a value close to the design vacuum value, and most of the steam turbines currently use surface condensers. Due to the existence of thermal resistance, the temperature of cooling water is always lower than that of condensation water, and the heat economy is poor. The steam discharge is the bigger then the steam condensation gives out heat just more, consequently in order to alleviate condenser heat load, improves the unit thermal efficiency, reforms transform condenser moisturizing atomizing economizer, is about to the condenser moisturizing increases atomizing shower nozzle moisturizing all the way, through the contact heat transfer like this, can absorb partial steam condensation heat, makes this partial demineralized water that supplys form a hybrid condenser in the condenser to alleviate surface condenser's heat load, improve the vacuum.
Patent application No.: 201610583450.7 discloses a water replenishing and atomizing system for a power plant condenser, which comprises a pipeline, a valve and an atomizing device, wherein the atomizing device is arranged at the throat part of the condenser and is provided with a plurality of layers of nozzle assemblies; each layer of nozzle assembly is provided with a plurality of atomizing nozzles, the pipeline is connected with a desalted water system of a power plant, and desalted water with certain pressure and flow rate is sprayed out of the nozzles in an atomizing water curtain mode by using a water pump; can satisfy a large amount of moisturizing demands when applying to the heat supply of power plant, improve the heat exchange efficiency of moisturizing and steam turbine exhaust, do not influence the inside heat transfer space of make full use of condenser under the inside steam flow of condenser
Disclosure of Invention
The invention aims to provide a water replenishing and atomizing energy-saving device for a condenser, which aims to solve the problems in the background technology.
Condenser moisturizing atomizing economizer, including inlet tube, horizontal water pipe and vertical water pipe, the inlet tube gets into from the condenser throat and is linked together with horizontal water pipe, is equipped with one row of vertical water pipe on the horizontal water pipe, its characterized in that, vertical water pipe on be equipped with a set of atomizing device.
The atomizing device is a core component of the invention and comprises a rotary joint, a flow dividing rod, a buffer head and an atomizing spray head, wherein the rotary joint is communicated with a vertical water pipe and can freely rotate around the vertical water pipe, the flow dividing rod is arranged on the periphery of the rotary joint in a circumferential equal proportion, the number of the flow dividing rods is more than 2, different numbers of flow dividing rods can be selectively arranged according to actual requirements for flow dividing and spraying, one end of each flow dividing rod is communicated with the rotary joint, the other end of each flow dividing rod is communicated with the buffer head, and the atomizing spray head is arranged on the buffer head.
When the quantity of reposition of redundant personnel pole is 2, then atomizer's quantity is 2, two atomizer's the opposite direction of injection form rotatory effort, when atomizer sprays together, because the opposite direction of injection of the two, just can drive the rotary joint rotatory, when rotary joint is rotatory, just can drive atomizer and rotate together, atomization effect at this moment increases about 5% than traditional irrotational, can improve atomizing water and steam and carry out better heat exchange, thereby can indirectly the energy can be saved, accord with the energy-conserving demand of enterprise.
Preferably: in order to increase the heat exchange effect, one side of buffer head be connected with flabellum one, rotary joint just drives flabellum one when rotatory and produces the air current, cools down for steam on the one hand, and on the other hand can let the water droplet after the atomizing improve about 8% again under the effect of air current, can improve atomizing water and steam and carry out better heat exchange to can indirectly the energy can be saved, accord with the energy-conserving demand of enterprise.
Preferably: in order to increase the heat exchange effect, the lower part of the flow dividing rod is provided with the second fan blade, the atomization effect of the invention can be improved by about 3% again through the design, and the atomized water and steam can be improved to perform better heat exchange, so that the energy can be indirectly saved, and the energy-saving requirement of enterprises can be met.
Preferably: in order to improve the heat exchange effect, the spray angle of the atomizing spray head forms a certain included angle with the front of the horizontal plane, the included angle is 15-25 degrees, and the effect is better when the spray orifice of the atomizing spray head is inclined upwards.
The invention has the technical effects and advantages that: the improved water supplement still adopts the current mode of supplementing water from the throat part of the condenser, and water is supplemented from the throat part of the condenser in an atomized state, so that an atomized zone is formed. After the water is supplemented into the condenser, the water is atomized through the mechanical atomizing nozzle, the steam turbine exhaust firstly exchanges heat with the atomized water, and the atomized water is small in water drop due to contact heat exchange between the steam turbine exhaust and the atomized water, so that the heat exchange between the supplemented water and the exhaust is strengthened. Therefore, the vaporization latent heat energy released by part of the exhausted steam enables the temperature of the water supplement to be immediately raised to the saturation temperature of the exhausted steam, and meanwhile, the water supplement enables the part of the exhausted steam to be condensed into saturated water, so that conditions are created for the overflow and diffusion of the steam from water drops, the aims of removing oxygen and reducing the temperature of the exhausted steam are achieved, and the phenomenon that the water supplement flows along the inner wall of the condenser is prevented. The special structural design of the invention not only improves the atomization effect, but also improves the heat exchange rate under the action of a plurality of fans, thereby achieving the effects of environmental protection and energy saving.
Drawings
FIG. 1 is a first block diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a partial enlarged view of FIG. 2B;
FIG. 4 is a block diagram of the second embodiment of the present invention;
FIG. 5 is a partial enlarged view of FIG. 4C;
fig. 6 is a partially enlarged view of fig. 4D.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-6:
condenser moisturizing atomizing economizer, including inlet tube 2, horizontal water pipe 3 and vertical water pipe 10, inlet tube 2 gets into from the condenser throat and is linked together with horizontal water pipe 2, is equipped with a row of vertical water pipe 10 on the horizontal water pipe 2, its characterized in that, vertical water pipe 10 on be equipped with a set of atomizing device, atomizing device include rotary joint 12, reposition of redundant personnel pole 7 and gentle drift 8 and atomizer 8, rotary joint 12 and vertical water pipe 10 be linked together and can freely rotate around vertical water pipe 10, rotary joint 12 be the circumference form all around and have reposition of redundant personnel pole 7 in equal proportion, the quantity of reposition of redundant personnel pole 7 be 2, one end and rotary joint 12 of reposition of redundant personnel pole 7 be linked together, the other end and the buffer head 8 of reposition of redundant personnel pole 7 be linked together, the buffer head 8 on install atomizer 9, atomizer 9 quantity be 2, the spraying directions of the two atomizing spray heads 9 are opposite to each other to form rotating acting force, one side of the buffering head 8 is connected with the first fan blade 6, the second fan blade 5 is installed on the lower portion of the flow dividing rod 7, a certain included angle is formed between the spraying angle of the atomizing spray heads 9 and the horizontal plane, and the effect is better when the included angle is 15 degrees.
The working principle of the invention is as follows: water is intake through the water inlet pipe 2, then flow through the pneumatic valve 4 again, rivers get into horizontal water pipe 10, then flow through vertical water pipe 10 again, spray from atomizer 9 at last and go out, when water sprays from atomizer 9 and goes out, produce rotatory effort, rotatory effort makes rotary joint 12 rotate, rotary joint 12 drives reposition of redundant personnel pole 7 rotatory, thereby can improve atomization effect, reposition of redundant personnel pole 7 drives the rotatory air current that produces of flabellum 6 and flabellum two 5, under the effect of air current, atomization effect obtains further improvement, thereby can improve the heat exchange rate, thereby can more the energy saving, thereby can be for enterprise's few manufacturing cost. By adopting the water supplementing design, when the water supplementing quantity of a single unit is 150T/h, the unit operates for 7500 hours per year, and the total water supplementing quantity M1 is 150000(T) per year; the average annual water replenishing temperature T is 20 ℃, and h is 85 KJ/Kg; the average annual vacuum Pc is 0.0056 MPa; the exhaust temperature T is 35 ℃; the inlet temperature of the circulating water is 20 ℃, the quantity of the circulating water is 69275T/H, taking summer as an example for calculation
Checking data according to vacuum and exhaust steam temperature: the enthalpy value H2 of saturated steam is 2565KJ/Kg, the enthalpy value H1 of saturated water is 147.5KJ/Kg, latent heat of vaporization 2417KJ/Kg, and the temperature of water supplement rises to 15 ℃. The condensed steam quantity M2 is 4.2 x 38/(H2-H1) x 150 is 9.9T/H, the annual total quantity 74250T, and the heating steam quantity is far lower than the steam turbine exhaust flow 1776T/H, so that the condenser has enough latent heat of vaporization of the exhaust to heat the make-up water, and the heat transfer end difference is zero, thereby ensuring that the oxygen is fully removed. The saved heat is Q (M2) (H2-H1) 74250000x2417 kJ, the calorific value Q of the mixed coal is 29307.6KJ/Kg, the saved coal quantity M (Q/Q) is 6123 (ton), the annual saved cost is M (local coal price is 500 yuan/ton) is 3061500 yuan, and the method is suitable for comprehensive popularization and application.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. Condenser moisturizing atomizing economizer, including inlet tube (2), horizontal water pipe (3) and vertical water pipe (10), inlet tube (2) get into from the condenser throat and are linked together with horizontal water pipe (2), are equipped with one row of vertical water pipe (10), its characterized in that on horizontal water pipe (2): and a group of atomizing devices are arranged on the vertical water pipe (10).
2. The condenser moisturizing atomizing economizer of claim 1, characterized in that, atomizing device include rotary joint (12), reposition of redundant personnel pole (7) and gentle drift (8) and atomizer (8), rotary joint (12) be linked together and can be around vertical water pipe (10) free rotation with vertical water pipe (10), rotary joint (12) around be that the circumference form is equal proportion and ann has reposition of redundant personnel pole (7), the quantity of reposition of redundant personnel pole (7) be greater than 2, the one end and the rotary joint (12) of reposition of redundant personnel pole (7) be linked together, the other end and the buffer head (8) of reposition of redundant personnel pole (7) be linked together, buffer head (8) on install atomizer (9).
3. The condenser water replenishing atomization energy-saving device according to claim 2, wherein the number of the flow dividing rods (7) is 2, the number of the atomization nozzles (9) is 2, and the spraying directions of the two atomization nozzles (9) are opposite to each other to form a rotating acting force.
4. The condenser water replenishing atomization energy-saving device as claimed in claim 3, wherein one side of the buffering head (8) is connected with a fan blade I (6).
5. The condenser water replenishing atomization energy-saving device according to claim 3, wherein a second fan blade (5) is mounted at the lower part of the flow dividing rod (7).
6. The condenser water replenishing atomization energy-saving device according to claim 2, wherein a certain included angle is formed between the spraying angle of the atomization nozzle (9) and the front of a horizontal plane, and the included angle is 15-25 degrees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111253645.2A CN113834344A (en) | 2021-10-27 | 2021-10-27 | Water-replenishing atomization energy-saving device of condenser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111253645.2A CN113834344A (en) | 2021-10-27 | 2021-10-27 | Water-replenishing atomization energy-saving device of condenser |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202470804U (en) * | 2011-12-01 | 2012-10-03 | 陕西万方瑟科赛德电力科技有限公司 | Efficient spray atomizing device for water supplementing system of condenser |
| CN204225935U (en) * | 2014-10-28 | 2015-03-25 | 西安亨特电力科技有限公司 | The energy-conservation water replenishing device of a kind of thermal power generation unit exhaust casing |
| CN105648686A (en) * | 2016-03-31 | 2016-06-08 | 湖州南浔石淙盛艳丝绸有限公司 | Efficient moisturizing room special for fabric |
| CN105854475A (en) * | 2016-06-07 | 2016-08-17 | 成都信息工程大学 | Rotary atomized self-absorption wet-type dust removal device |
| CN105973025A (en) * | 2016-06-30 | 2016-09-28 | 李开洁 | Novel energy-saving spraying ventilation cooling tower |
| CN209566395U (en) * | 2018-12-25 | 2019-11-01 | 天津市京昆汽车配件有限公司 | A kind of waste old recyclable device |
-
2021
- 2021-10-27 CN CN202111253645.2A patent/CN113834344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202470804U (en) * | 2011-12-01 | 2012-10-03 | 陕西万方瑟科赛德电力科技有限公司 | Efficient spray atomizing device for water supplementing system of condenser |
| CN204225935U (en) * | 2014-10-28 | 2015-03-25 | 西安亨特电力科技有限公司 | The energy-conservation water replenishing device of a kind of thermal power generation unit exhaust casing |
| CN105648686A (en) * | 2016-03-31 | 2016-06-08 | 湖州南浔石淙盛艳丝绸有限公司 | Efficient moisturizing room special for fabric |
| CN105854475A (en) * | 2016-06-07 | 2016-08-17 | 成都信息工程大学 | Rotary atomized self-absorption wet-type dust removal device |
| CN105973025A (en) * | 2016-06-30 | 2016-09-28 | 李开洁 | Novel energy-saving spraying ventilation cooling tower |
| CN209566395U (en) * | 2018-12-25 | 2019-11-01 | 天津市京昆汽车配件有限公司 | A kind of waste old recyclable device |
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Application publication date: 20211224 |