CN210154415U - Large-scale thermal power station air cooling island finned tube dry-type cleaning system - Google Patents
Large-scale thermal power station air cooling island finned tube dry-type cleaning system Download PDFInfo
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- CN210154415U CN210154415U CN201920220522.0U CN201920220522U CN210154415U CN 210154415 U CN210154415 U CN 210154415U CN 201920220522 U CN201920220522 U CN 201920220522U CN 210154415 U CN210154415 U CN 210154415U
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Abstract
The utility model relates to a large-scale thermal power station air cooling island finned tube dry-type cleaning system, which comprises a steam turbine, an air cooling condenser tube bundle, a transverse translation frame, a mobile cleaner, an air compressor, a distribution box and a condensation water tank; an air outlet of the air compressor is communicated with an air inlet of the high-pressure air storage tank through a throttle valve, an air outlet of the high-pressure air storage tank is communicated with a barometer, the barometer is communicated with a three-way reversing valve, the three-way reversing valve is respectively communicated with a high-pressure gas safety valve and an air source conveying pipe, and the air source conveying pipe is communicated with an air inlet of the mobile cleaner; the distribution box is electrically connected with the control cabinet, and the control cabinet is connected with the mobile cleaner through an electromagnetic valve control line. The utility model has the advantages that: the utility model discloses an air cooling condenser cleaning system adopts compressed air to sweep, and compressed air sweeps and uses the air to replace demineralized water as the cleaning medium, can solve "three north" area extensive, high frequency high pressure demineralized water washing water resource consumption many, the high difficult problem of cleaning cost.
Description
Technical Field
The utility model belongs to the technical field of thermal power station air cooling condenser technique and specifically relates to a large-scale thermal power station air cooling island finned tube dry-type cleaning system is related to.
Background
The method is characterized in that China coal abundantly determines that thermal power still stays in a leading position in a short period, however, China coal is mainly distributed in three north areas such as northeast, North China and northwest, for example, the three north areas cover 14 of 16 coal power bases in China, but the three north areas are basically in water-deficient or low-water areas, so that the thermal power development has a contradiction on in a coal-fired and water resource distribution geographical structure, a direct air-cooling unit (direct-cooling unit) is widely applied in the three north areas with excellent characteristics such as 69-84% water saving rate, simple structure and low cost, but the air-cooling condenser of the direct-cooling unit takes air with small heat capacity as a cooling medium, the heat dissipation capacity is poor, in order to strengthen the heat exchange process of an air side, aluminum fins are arranged on a pipe bundle of the air-cooling condenser to form a channel of cooling air, namely fin channels, the fin spacing is about 2.3mm, the pipe bundle spacing is about 38mm, the air-cooling fin channel is large in the air-cooling air-condensing unit, the three-condensing water channel with large wind sand, the large dust raising, the pollution is extremely easy to be in the air-cooling, the three-cooling water-condensing water-ash-condensing water-condensing and the high-saving efficiency is increased, the high-saving air-washing water-washing air-cooling water-washing air-cooling water-washing air-cooling water-cooling water-washing air-cooling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the prior art, providing a simple structure, low in cost, can implement well, can improve the heat transfer effect of thermal power unit air cooling condenser, reduce the coal consumption of unit, energy-conservation, the good large-scale thermal power station air cooling island finned tube dry-type cleaning system of environmental protection effect.
The dry-type cleaning system for the air cooling island finned tubes of the large thermal power station comprises a steam turbine, an air cooling condenser tube bundle, a transverse translation frame, a movable cleaner, an air compressor, a distribution box and a condensation water tank; an air outlet of the air compressor is communicated with an air inlet of the high-pressure air storage tank through a throttle valve, an air outlet of the high-pressure air storage tank is communicated with a barometer, the barometer is communicated with a three-way reversing valve, the three-way reversing valve is respectively communicated with a high-pressure gas safety valve and an air source conveying pipe, and the air source conveying pipe is communicated with an air inlet of the mobile cleaner; the distribution box is electrically connected with the control cabinet, and the control cabinet is connected with the mobile cleaner through an electromagnetic valve control line; the movable cleaner is arranged on the transverse translation frame through a longitudinal rail pulley, the lower end of the transverse translation frame is arranged on a transverse lower rail through a first transverse rail pulley, the upper end of the transverse translation frame is arranged on a transverse rail through a second transverse rail pulley, the longitudinal rail pulley is respectively connected with a driving motor and a fixed pulley through a timing belt, the transverse rail is connected with a steam exhaust distribution pipe, and the transverse lower rail is connected with a condensation water tank; the steam turbine exhaust discharged by the low-pressure cylinder of the steam turbine is communicated with the input end of an exhaust distribution pipe, the output end of the exhaust distribution pipe is communicated with the input end of a tube bundle of an air-cooling condenser, the output end of the tube bundle of the air-cooling condenser is communicated with the input end of a condensation water tank, and the output end of the condensation water tank is communicated with the boiler water supply through a condensation water pump.
Preferably, the method comprises the following steps: the mobile cleaner comprises an electromagnetic valve and a purging nozzle; the output end of the control cabinet is electrically connected with the input end of the electromagnetic valve through an electromagnetic valve control line, and the electromagnetic valve is arranged on the mobile cleaner; the gas source conveying pipe is communicated with the gas inlet of the movable cleaner, and the gas outlet of the movable cleaner is communicated with the blowing nozzle.
Preferably, the method comprises the following steps: the purging nozzle is a divergent nozzle, the inlet of the nozzle is of a circular structure, and the outlet of the nozzle is of a rectangular structure; the distance between the bottom end of the blowing nozzle and the tube bundle of the air-cooling condenser is 10-15 cm.
The utility model has the advantages that:
1) the utility model discloses an air cooling condenser cleaning system adopts compressed air to sweep, and compressed air sweeps and uses the air to replace demineralized water as the cleaning medium, can solve "three north" area extensive, high frequency high pressure demineralized water washing water resource consumption many, the high difficult problem of cleaning cost.
2) The utility model arranges the movable cleaner which can perform the compressed air purging function on the outer surface of the air-cooling condenser, thereby simplifying the mechanical structure of the air-cooling condenser cleaning system; the blowing nozzle adopts a gradually expanding nozzle and is arranged close to the tube bundle of the air-cooled condenser, so that the blowing air speed of the compressed air blowing outlet can be further improved, ash and scale can be prevented from being difficult to be effectively blown due to low air density and small momentum, and the pressure can be prevented from being released due to rapid diffusion of the compressed air due to the close distance of the tube bundle of the air-cooled condenser.
3) The utility model discloses according to this compressed air sweeps the optimum interval that sweeps in the operating duration and confirms the cleaning cycle, adjust the interval that sweeps that compressed air sweeps, can maintain air cooling condenser ash dirt loss cost and compressed air and sweep loss cost sum minimizing.
4) The utility model has the advantages of simple and reasonable structure, low in cost does not have special requirement equipment, and the practicality is good, and more importantly has improved the heat transfer effect of thermal power generating unit air cooling condenser, has reduced the coal consumption of unit, and energy-conservation, environmental protection effect are good.
Drawings
FIG. 1 is a schematic structural diagram of a large-scale thermal power station air cooling island finned tube dry cleaning system;
fig. 2 is a schematic structural view of the mobile washer in fig. 1.
Description of reference numerals: the system comprises a steam turbine 1, a steam turbine exhaust 2, a steam exhaust distribution pipe 3, an air-cooled condenser pipe bundle 4, an air-cooled fan 5, a boiler feed water 6, a transverse rail 7, a transverse rail 8, a transverse rail 9, a transverse translation frame 10, a movable cleaner 10, a longitudinal rail pulley 11, a timing belt 12, a driving motor 13, a fixed pulley 14, a condensate pump 15, an electromagnetic valve control line 16, an air compressor 17, a throttle valve 18, a high-pressure air storage tank 19, a barometer 20, a three-way reversing valve 21, an air source conveying pipe 22, a distribution box 23, a first transverse rail pulley 24, a second transverse rail pulley 25, a condensate tank 26, a control cabinet 27, a high-pressure gas safety valve 28, an electromagnetic valve 29 and.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Referring to fig. 1, an air outlet of the air compressor 17 is communicated with an air inlet of the high-pressure air tank 19 through a throttle valve 18, that is, the air compressor 17 is communicated with the throttle valve 18, and the throttle valve 18 is communicated with the high-pressure air tank 19; the air outlet of the high-pressure air storage tank 19 is communicated with a barometer 20, the barometer 20 is communicated with a three-way reversing valve 21, the three-way reversing valve 21 is respectively communicated with a high-pressure gas safety valve 28 and a gas source conveying pipe 22, and the gas source conveying pipe 22 is communicated with the air inlet of the mobile cleaner 10; the distribution box 23 is electrically connected with a control cabinet 27, and the control cabinet 27 is connected with the mobile cleaner 10 through an electromagnetic valve control line 16; the movable cleaner 10 is arranged on a transverse translation frame 9 through a longitudinal rail pulley 11, the lower end of the transverse translation frame 9 is arranged on a transverse lower rail 8 through a first transverse rail pulley 24, the upper end of the transverse translation frame 9 is arranged on a transverse rail 7 through a second transverse rail pulley 25, the longitudinal rail pulley 11 is respectively connected with a driving motor 13 and a fixed pulley 14 through a timing belt 12, the transverse rail 7 is connected with an exhaust steam distribution pipe 3, and the transverse lower rail 8 is connected with a condensation water tank 26; the exhaust steam of the steam turbine 2 and the 3 inputs of exhaust steam distribution pipe of the low pressure cylinder exhaust of the steam turbine 1 communicate, the 3 outputs of exhaust steam distribution pipe communicate with the 4 inputs of air cooling condenser tube bank, the 4 outputs of air cooling condenser tube bank communicate with the 26 inputs of condensate tank, the 26 outputs of condensate tank communicate with the boiler feed water 6 through the condensate pump 15.
Referring to fig. 2, the mobile washer 10 is constructed as follows: the output end of the control cabinet 27 is electrically connected with the input end of an electromagnetic valve 29 through an electromagnetic valve control line 16, and the electromagnetic valve 29 is arranged on the mobile cleaner 10; the air source conveying pipe 22 is communicated with an air inlet of the mobile cleaner 10, and an air outlet of the mobile cleaner 10 is communicated with the purging nozzle 30. The inlet of the blowing nozzle 30 is circular, the inner diameter of the blowing nozzle is 6.35mm, the outlet of the blowing nozzle is rectangular, the length of the blowing nozzle is 5.35mm, the width of the blowing nozzle is 1.5mm, and the blowing absolute pressure of the blowing nozzle 30 is 0.6-0.8 MPa. The distance between the bottom end of the mobile cleaner purging nozzle and the air cooling condenser tube bundle 4 is 10-15 cm.
Referring to fig. 1 and 2, the utility model discloses large-scale thermal power station air cooling island finned tube dry-type cleaning system's operational mode adopts compressed air to sweep according to the change in season: the movable cleaner 10 is arranged on one side of the lowest end of the air-cooled condenser tube bundle 4, the transverse translation frame 9 transversely translates on the transverse lower rail 8 and the transverse rail 7 through the first transverse rail pulley 24 and the second transverse rail pulley 25 respectively, compressed air at the outlet of the purging nozzle 20 purges the air-cooled condenser tube bundle 4 to implement transverse cleaning, the transverse cleaning is automatically stopped when the air-cooled condenser tube bundle is cleaned to the other side, the timing belt 12 is driven by the driving motor 13 on the transverse translation frame 9 to pull the movable cleaner 10 to move upwards, and after the air-cooled condenser tube bundle is butted to the position purged at the previous time, the air-cooled condenser tube bundle is transversely cleaned again, and the operation is repeated in such a way, so that.
The utility model discloses a large-scale thermal power station air cooling island finned tube dry-type cleaning system uses compressed air to sweep and washs air cooling condenser ash dirt, can overcome following shortcoming:
1. the single high-pressure desalted water is high in water consumption in washing, the cost is high in water-deficient and water-deficient areas, and the washed sewage stains electric equipment below the air-cooled condenser;
2. the compressed air purging can perform high-frequency, economic and water-saving purging, and the cleanliness of the air-cooling condenser is maintained under the working conditions of saving water consumption and reducing accident rate.
The utility model discloses large-scale thermal power station air cooling island finned tube dry-type cleaning system adopts air supply conveyer pipe and gas to remove the purger, simplifies whole cleaning system structure, can reduce the entire system expense and the operation degree of difficulty. The diffused compressed air nozzles can increase the outlet air speed of the nozzles, and when the air compressor maintains the same flow, the compressed air blowing air speed can be adjusted by adjusting the number of the compressed air nozzles according to the accumulated dust amount of the air-cooled condenser, so that the compressed air blowing effect is improved.
The utility model discloses large-scale thermal power station air cooling island finned tube dry-type cleaning system adopts switch board, driving motor, solenoid valve, high-pressure gas relief valve and choke valve to constitute the power and protection, the adjusting device who remove the purger. The dry type cleaning system has sufficient compressed air, the compressed air is blown and swept in a reciprocating mode from the lower end to the upper end of the air-cooled condenser, accumulated dust of an exhaust gas carrier after the air-cooled condenser is blown and swept by the movable cleaner passes through the fin channel of the air-cooled condenser again along with cooling air and is discharged to the atmospheric environment, and due to the fact that dust carried by the cooling air flows upwards, the air-cooled condenser is washed in a circulating and reciprocating mode from top to bottom in order to avoid secondary pollution caused by the dust carried by the cooling air.
The utility model discloses large-scale thermal power station air cooling island finned tube dry-type cleaning system's cleaning cycle confirmation method is: the cleaning period is determined according to the optimal purging interval in the compressed air purging operation time, the compressed air purging interval is adjusted, the sum of the ash scale loss cost and the compressed air purging loss cost of the air-cooling condenser can be kept to be minimized, the method is scientific and reasonable, and the service life of the air-cooling condenser can be prolonged.
Claims (1)
1. The large-scale thermal power station air cooling island finned tube dry-type cleaning system is characterized by comprising a steam turbine (1), an air cooling condenser tube bundle (4), a transverse translation frame (9), a mobile cleaner (10), an air compressor (17), a distribution box (23) and a condensation water tank (26); an air outlet of the air compressor (17) is communicated with an air inlet of a high-pressure air storage tank (19) through a throttle valve (18), an air outlet of the high-pressure air storage tank (19) is communicated with an air pressure gauge (20), the air pressure gauge (20) is communicated with a three-way reversing valve (21), the three-way reversing valve (21) is respectively communicated with a high-pressure gas safety valve (28) and an air source conveying pipe (22), and the air source conveying pipe (22) is communicated with an air inlet of the movable cleaner (10); the distribution box (23) is electrically connected with the control cabinet (27), and the control cabinet (27) is connected with the mobile cleaner (10) through an electromagnetic valve control line (16); the mobile cleaner (10) is arranged on a transverse translation frame (9) through a longitudinal rail pulley (11), the lower end of the transverse translation frame (9) is arranged on a transverse lower rail (8) through a first transverse rail pulley (24), the upper end of the transverse translation frame (9) is arranged on a transverse rail (7) through a second transverse rail pulley (25), the longitudinal rail pulley (11) is respectively connected with a driving motor (13) and a fixed pulley (14) through a timing belt (12), the transverse rail (7) is connected with a steam exhaust distribution pipe (3), and the transverse lower rail (8) is connected with a condensation water tank (26); the steam turbine exhaust steam (2) discharged by a low-pressure cylinder of the steam turbine (1) is communicated with the input end of an exhaust steam distribution pipe (3), the output end of the exhaust steam distribution pipe (3) is communicated with the input end of an air-cooled condenser tube bundle (4), the output end of the air-cooled condenser tube bundle (4) is communicated with the input end of a condensate tank (26), and the output end of the condensate tank (26) is communicated with boiler feed water (6) through a condensate pump (15); the mobile washer (10) comprises a solenoid valve (29) and a purge nozzle (30); the output end of the control cabinet (27) is electrically connected with the input end of an electromagnetic valve (29) through an electromagnetic valve control line (16), and the electromagnetic valve (29) is arranged on the mobile cleaner (10); the gas source conveying pipe (22) is communicated with a gas inlet of the movable cleaner (10), and a gas outlet of the movable cleaner (10) is communicated with the purging nozzle (30); the purging nozzle (30) is a divergent nozzle, the inlet of the nozzle is of a circular structure, and the outlet of the nozzle is of a rectangular structure; the distance between the bottom end of the blowing nozzle (30) and the tube bundle of the air-cooling condenser is 10-15 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220522.0U CN210154415U (en) | 2019-02-21 | 2019-02-21 | Large-scale thermal power station air cooling island finned tube dry-type cleaning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220522.0U CN210154415U (en) | 2019-02-21 | 2019-02-21 | Large-scale thermal power station air cooling island finned tube dry-type cleaning system |
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| CN210154415U true CN210154415U (en) | 2020-03-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902376A (en) * | 2021-02-08 | 2021-06-04 | 珠海格力电器股份有限公司 | Dust removal device, air conditioner and dust removal method |
| CN114279261A (en) * | 2022-01-04 | 2022-04-05 | 国家能源集团国源电力有限公司 | Cleaning system and cleaning method for air-cooled surface type heat exchanger |
-
2019
- 2019-02-21 CN CN201920220522.0U patent/CN210154415U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902376A (en) * | 2021-02-08 | 2021-06-04 | 珠海格力电器股份有限公司 | Dust removal device, air conditioner and dust removal method |
| CN112902376B (en) * | 2021-02-08 | 2022-04-15 | 珠海格力电器股份有限公司 | Dust removal device, air conditioner and dust removal method |
| CN114279261A (en) * | 2022-01-04 | 2022-04-05 | 国家能源集团国源电力有限公司 | Cleaning system and cleaning method for air-cooled surface type heat exchanger |
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