CN209857680U - Multi-section water distribution indirect air cooling radiator - Google Patents
Multi-section water distribution indirect air cooling radiator Download PDFInfo
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- CN209857680U CN209857680U CN201920540512.5U CN201920540512U CN209857680U CN 209857680 U CN209857680 U CN 209857680U CN 201920540512 U CN201920540512 U CN 201920540512U CN 209857680 U CN209857680 U CN 209857680U
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Abstract
The utility model discloses an indirect air cooling radiator of multistage water distribution, include the radiator support frame and fix the air cooling radiator body on the radiator support frame, the air cooling radiator body comprises a plurality of radiator cooling unit, and radiator cooling unit divide into a plurality of layers, and every layer of radiator cooling unit contains the single bank of tube bank of a plurality of vertical settings, and single bank of tube bank comprises the cascaded tube bank from top to bottom of a plurality of, and every single bank of tube bank sets up a water inlet and a delivery port. The utility model has the advantages that: by adopting a multi-section water distribution mode, the water resistance of the radiator is reduced, and the running power consumption of the circulating water pump is saved; the small-caliber pipe bundle is adopted, so that the heat transfer coefficient is higher and the wind resistance is lower; and after the radiator is subjected to multi-section water distribution, the height of the radiator in a single flow is reduced, the temperature difference between the rows in the total radiator pipe is greatly reduced, the anti-freezing performance is better, the indirect cooling tower can safely operate at a lower water temperature, and the operating cost is saved.
Description
Technical Field
The utility model relates to a thermal power plant's air cooling technical field particularly, relates to an indirect air cooling radiator of two sections water distributions.
Background
In recent years, with the continuous and high-speed development of economy, the supply of electric power is increasingly tense, so that the rapid development of large-capacity steam turbine units in the power industry is imperative. The power industry not only consumes a large amount of primary energy, but also consumes a large amount of water resources. In areas with low water resources, the development of the power industry is restricted by the wet cooling power generation technology, so the air cooling technology is produced at the same time.
The most common indirect air cooling system at present is an indirect air cooling system with a surface condenser (also called a hamon system), which is composed of a surface condenser, an air cooling radiator, a circulating water pump, a nitrogen charging protection system, a circulating water make-up water system, a radiator cleaning system and the like, and an air cooling tower. The system is basically similar to a conventional wet cooling system, and is different from the conventional wet cooling system in that an air cooling tower is used for replacing a wet cooling tower, a closed circulating cooling water system is used for replacing an open circulating cooling water system, and the circulating water adopts desalted water. When the Hamon type indirect air cooling system operates, exhaust steam (dead steam) from a low-pressure cylinder of a steam turbine and a steam feed pump enters the shell side of the surface type condenser, circulating cooling water from a main cooling water pipeline of the cooling water enters the tube side of the surface type condenser through a condenser water inlet pipeline and is exhausted through a heat exchange condensing turbine, meanwhile, the circulating cooling water is heated and is connected with a main cooling water pipeline through a condenser water outlet pipeline, and the main cooling water pipeline of the cooling water is connected to an air cooling radiator of a natural ventilation cooling tower for cooling.
The core equipment of the indirect air cooling system is an air cooling radiator, and the air cooling radiator body consists of a plurality of tube bundles. The single-row tube bundle of the existing air cooling radiator is generally formed by directly connecting four tube bundles with the outer diameter of 25mm, and is vertically installed, is distributed with water in a single section, and is provided with two connectors one in and one out. By adopting the mode, the heat exchange coefficient is low, the resistance in the pipe is large, the wind resistance is large, and under the same cooling capacity, the cooling area is large, the tower type of the cooling tower is large, and the civil engineering investment is large.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to provide an air cooling radiator of multilayer arrangement, multistage water distribution, the radiating effect is good, and the working costs is low, and the freeze-proof performance is more excellent.
The utility model provides an indirect air cooling radiator of multistage water distribution, include the radiator support frame and fix air cooling radiator body on the radiator support frame, air cooling radiator body comprises a plurality of radiator cooling units, radiator cooling unit divide into a plurality of layers, every layer radiator cooling unit contains the single bank of tube bundles of a plurality of vertical settings, single bank of tube bundles comprises a plurality of cascaded tube bundles from top to bottom, is located a cooling zone of single bank of tube bundles constitution of a plurality of radiator cooling units of one deck, every the cooling zone sets up a water inlet and a delivery port.
As a further improvement, the radiator cooling unit is divided into an upper layer and a lower layer.
As a further improvement of the utility model, the single-row tube bundle is formed by two tube bundles which are directly connected.
As a further improvement of the utility model, the outer diameter of the base tube of the tube bundle is 18 mm.
As a further improvement of the present invention, the length of the tube bundle is 7 m.
As a further improvement, the tube bundle adopts aluminum tube aluminum fins or steel tube steel fins.
The utility model has the advantages that: by adopting a multi-section water distribution mode, the flow area in the radiator pipe is increased, the flow of cooling water is reduced, the water resistance of the radiator is reduced, and the running power consumption of the circulating water pump is greatly saved; the small-caliber pipe bundle is adopted, so that the heat transfer coefficient is higher, the wind resistance is lower, the cooling area required to be configured is smaller under the condition of meeting the same cooling capacity, the tower shape is smaller, and the civil construction investment of a large number of cooling towers can be saved; and after the radiator is distributed with water in multiple sections, the height of the radiator in a single flow is reduced, the distance between the water side of the radiator along the flow is reduced, the wind speed unevenness generated by the height difference of the wind side is also reduced, the temperature difference between the columns in the total radiator pipe is greatly reduced, and the anti-freezing effect is greatly facilitated, so that the indirect cooling tower can safely operate at lower water temperature, the unit operation backpressure can be reduced, the coal consumption is reduced, and the operation cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of an indirect air-cooled radiator with multiple water distribution sections according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a conventional air-cooled radiator.
In the figure, the position of the upper end of the main shaft,
1. a tube bundle; 2. a radiator support frame; 3. a water outlet; 4. a water inlet; 5. and (5) cooling the tower.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Embodiment 1, as shown in fig. 1, an indirect air cooling radiator of multistage water distribution, including radiator support frame 2 and the air cooling radiator body of fixing on radiator support frame 2, air cooling radiator body comprises a plurality of radiator cooling unit, and radiator cooling unit divide into a plurality of layers, every layer of radiator cooling unit contains the single bank of tube bank of a plurality of vertical settings, and single bank of tube bank comprises a plurality of tube bank 1 that cascades from top to bottom, is located a cooling zone, every of single bank of tube bank constitution of a plurality of radiator cooling unit of one deck the cooling zone sets up a water inlet 4 and a delivery port 3.
The multi-layer distributed multi-section water distribution radiator has high heat transfer coefficient, low operation cost and good antifreezing performance under the condition of not changing other conditions.
Further, the cooling unit of the radiator is divided into an upper layer and a lower layer. The circulation area in the two-section water distribution radiator pipe is doubled, the flow is reduced by half, the water resistance of the radiator is only 1/3 of the scheme of one-section water distribution of the traditional radiator, and the running power consumption of the circulating water pump is greatly saved.
Furthermore, the single-row tube bundle is formed by directly connecting two tube bundles 1.
Further, the outer diameter of the base pipe of the tube bundle 1 is 18mm, and the heat transfer coefficient is higher and the wind resistance is smaller compared with the traditional large-diameter heat exchange pipe.
Further, the length of the tube bundle 1 is 7 m.
Furthermore, the tube bundle 1 adopts aluminum tube fins or steel tube fins, and has good heat dissipation performance.
When in specific use:
the base pipe diameter of tube bank 1 is 18mm, change into two sections water distributions by single section water distribution, single row tube bank is formed by two 1 lug connection of tube bank that the base pipe external diameter of about 7m is 18mm of length, radiator cooling unit has two-layer from top to bottom, every layer of radiator cooling unit contains the single row tube bank of a plurality of vertical settings, the vertical installation of single row tube bank, the single row tube bank of the same one deck of a plurality of radiator cooling unit establishes ties and forms a cooling zone, every cooling zone all has a water inlet 4 and a delivery port 3, upper and lower two-layer cooling zone has and sets up water inlet 4 and delivery port 3 respectively, every cooling zone is the water distribution respectively, the total height of whole indirect air cooling radiator of multistage water distribution (this embodiment adopts two sections water distributions). The two-section water distribution indirect air cooling radiator is suitable for a Hammon type indirect air cooling system, when the two-section water distribution indirect air cooling radiator is installed, the two-section water distribution indirect air cooling radiator is installed at the bottom of a cooling tower 5 for a circle, a water inlet 4 and a water outlet 3 of a single-row tube bundle on the upper layer and the lower layer of the radiator are respectively connected with a circulating water return pipeline of the indirect air cooling system, and a condenser and the two-section water distribution indirect air cooling radiator are connected through the circulating. When the cooling device works, the condenser of the indirect air cooling system cools the exhaust steam discharged by the steam turbine, the cooled cooling water with the increased temperature enters the indirect air cooling radiator through the circulating water pump, the temperature is reduced through natural ventilation of the cooling tower 5, the air flows outside the tube bundle 1, and the cooling water returns to the condenser to cool the steam turbine for exhaust after being cooled in the tube bundle 1.
In the configuration of the cooling system with the same cooling capacity, because the base pipe with the diameter of 18mm is adopted, compared with the traditional base pipe with the diameter of 25mm, the heat radiator has higher heat transfer coefficient and smaller wind resistance, therefore, the tower shape of the cooling tower 5 is smaller, the flow area in the two-section water distribution radiator pipe is doubled, the flow is reduced by half, the water resistance of the radiator is only 1/3 of the one-section water distribution scheme of the traditional radiator, after two sections of radiators are used for water distribution, the height of the radiators in a single flow is reduced by half, the distance between the water sides of the radiators along the flow is reduced, the wind speed unevenness generated by the height difference of the wind sides is also reduced, the temperature difference between the rows in the total radiator pipes is greatly reduced, the indirect air cooling radiator can safely operate at a lower water temperature in winter, the operating backpressure of a unit is reduced by 4-5 kPa, the coal consumption is reduced by 4-5 g/DEG, and the operating power consumption and the operating cost of the whole indirect air cooling system are lower.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an indirect air cooling radiator of multistage water distribution, its characterized in that includes radiator support frame (2) and fixes air cooling radiator body on radiator support frame (2), air cooling radiator body comprises a plurality of radiator cooling unit, radiator cooling unit divide into a plurality of layers, every layer radiator cooling unit contains the single bank tube bank of a plurality of vertical settings, single bank tube bank comprises a plurality of cascaded tube banks (1) from top to bottom, is located a cooling zone of single bank tube bank constitution of a plurality of radiator cooling unit of one deck, every the cooling zone sets up a water inlet (4) and a delivery port (3).
2. The indirect air-cooled radiator with multi-segment water distribution according to claim 1, wherein the cooling units of the radiator are divided into an upper layer and a lower layer.
3. The indirect air-cooled radiator with multi-segment water distribution according to claim 1, wherein the single-row tube bundle is formed by directly connecting two tube bundles.
4. The indirect air-cooled radiator with multi-segment water distribution according to claim 1, wherein the outer diameter of the base pipe of the tube bundle (1) is 18 mm.
5. A multi-sectional water indirect air-cooled radiator according to claim 1, wherein the length of the tube bundle (1) is 7 m.
6. The indirect air-cooled radiator with multi-segment water distribution according to claim 1, wherein the tube bundle (1) is made of aluminum tube fins or steel tube fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920540512.5U CN209857680U (en) | 2019-04-19 | 2019-04-19 | Multi-section water distribution indirect air cooling radiator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920540512.5U CN209857680U (en) | 2019-04-19 | 2019-04-19 | Multi-section water distribution indirect air cooling radiator |
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| CN209857680U true CN209857680U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017697A (en) * | 2019-04-19 | 2019-07-16 | 中国大唐集团科技工程有限公司 | A kind of indirect air cooling heat radiator of multistage water distribution |
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- 2019-04-19 CN CN201920540512.5U patent/CN209857680U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017697A (en) * | 2019-04-19 | 2019-07-16 | 中国大唐集团科技工程有限公司 | A kind of indirect air cooling heat radiator of multistage water distribution |
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