CN203454919U - Flushing, spraying and recycling system of air cooling system of thermal power plant - Google Patents

Abstract

The utility model discloses a flushing and spraying recovery system for the air cooling system of a thermal power plant, which comprises a desalted water tank for providing cooling water sources and a water supply main pipe for outputting desalinated water. A spray water pump is connected to the desalinated water supply main pipe, and the spray water pump A flushing pipeline and a spraying pipeline are arranged in parallel at the output end of the flushing pipeline, a high-pressure flushing water pump and a flushing nozzle are arranged on the flushing pipeline, and an atomizing nozzle is arranged at the outlet end of the spraying pipeline. The utility model can realize one machine with two functions, realize the cleaning of the cooling tube bundle while realizing the cooling of the air-cooling system, and avoid the problems of cost increase and low utilization efficiency caused by separately adopting two sets of systems in the prior art. However, in this scheme, the spray water pump matched with the original air-cooling system matches the status of the on-site air-cooling system in terms of power and lift, so the power consumption is also greatly reduced. The recovery of demineralized water is realized through the centrifugal pump arranged on the water supply main pipe, which improves the utilization rate and reduces the cost.

Description

A kind of rinse spray recovery system of Power Plant Air Cooling System

Technical field

The utility model relates to thermoelectricity field, is specifically related to a kind of flusher that Power Plant Air Cooling System is carried out to dust flushing.

Background technology

General air cooling steam power plant, air cooling system is exposed in air, the surface dust that easily falls, when dust and summer poplar wadding amass when a certain amount of, can stop up the air cooling tube bank of air cooling system heat exchange, thereby reduce heat transfer effect, so the air cooling system of steam power plant is all provided with spray system, after spray system makes water fogging, reduce fan entrance wind-warm syndrome, such mode can be strengthened the heat transfer effect of air cooling tube bank.But said method only can reduce fan entrance wind-warm syndrome and increase air humidity, and in summer, the pollen that some plant maturations produce afterwards, catkin meeting ballooning, after sucking air cooling system, can clog the fin of air cooling tube bank, thereby reduced the heat transfer effect of air cooling tube bank, and this class impurity is inhaled more tight and more tight with fan, can only adopt the mode of giant water spray to clear up.The water injection system of prior art is all to utilize the entrance power source that is used as air cooling flush water pump to the oxygen-eliminating device charging pump of boiler water filling, then utilize independent pipeline to form rinse-system, although such structure has improved the utilization rate to existing equipment, but the power that this mode is not considered oxygen-eliminating device charging pump with rinse mating between demand power, the power of oxygen-eliminating device charging pump is far longer than the demand of flushing, like this in the flushing process of air cooling, oxygen-eliminating device charging pump is in the running of inefficient district always, not only wasted energy but also do not raised the efficiency, fragile equipment also simultaneously.In addition there is very strong ageing and specific aim the time that air cooling system need to rinse, only occur in summer, once spend this season, rinse-system is just in idle state, only have to the coming year and could can use again, therefore adopt independently rinse-system also to make utilization rate too low.

Utility model content

For solving the air cooling system of steam power plant in prior art, adopt independently flusher cost to increase the low problem of utilization rate, the utility model provides a kind of rinse spray recovery system that flusher and existing spray system are combined, concrete scheme is as follows: a kind of rinse spray recovery system of Power Plant Air Cooling System, comprise the water main pipe that the sweet-water tank of cooling water source and output demineralized water are provided, in water main pipe, be connected with feeding spraying pump, it is characterized in that, described shower water delivery side of pump has been arranged in parallel flushing line and spray pipeline, on described flushing line, be provided with high pressure washing water pump and Flushing nozzle, the port of export of described spray pipeline is provided with atomizer.

For improving the utilization rate of demineralized water: described high pressure washing water pump place is provided with and reclaims the demineralized water of cooling high pressure washing water pump and the return water tank of high pressure washing water pump overflow water, in described water main pipe, be provided with the centrifugal pump being connected with described return water tank, described centrifugal pump is drawn into the demineralized water in return water tank in water main pipe.

For guaranteeing the normal operation of equipment: described feeding spraying pump is provided with two and be connected in parallel on respectively in water main pipe, described high pressure washing water pump is provided with two and be arranged in parallel.

For ease of switching: the two ends of described feeding spraying pump are respectively arranged with control valve, on the pipeline between described high pressure washing water pump and spray pipeline and feeding spraying pump, be respectively arranged with control valve between difference in functionality.

The utility model utilization sprays and rinses the characteristic that two operations can not be worked simultaneously, gives full play to the effect of feeding spraying pump, when needs rinse, being outputted on flushing line of feeding spraying pump is cleaned cooling tube bundle.After cleaning completes, then by being outputted on spray pipeline of feeding spraying pump, then by the atomizer of the spray pipeline port of export by offering the cooling fan of air cooling system after demineralized water atomization, air cooling system entrance wind-warm syndrome is lowered the temperature.By said structure this programme, can realize dual-use, when realizing air cooling system spraying cooling, realize the cleaning of cooling tube bundle, avoid adopting respectively in prior art the cost that two cover systems bring to increase and the low problem of utilization ratio.And the feeding spraying pump that this programme adopts former empty ice system support on power and lift all with on-the-spot air cooling system state matches, therefore in power consumption, also greatly reduce.By being arranged on centrifugal pump in water main pipe, realize the recovery of demineralized water, improved utilization rate, reduced cost.

Accompanying drawing explanation

Fig. 1 structural representation of the present utility model;

Attached number in the figure explanation: 1-sweet-water tank, 2-water main pipe, 3-feeding spraying pump, 4-control valve, 5-high pressure washing water pump, 6-spray pipeline, 7-flushing line, the tube bank of 8-air cooling, 9-return water tank, 10-centrifugal pump.

The specific embodiment

As shown in Figure 1, the rinse spray recovery system of Power Plant Air Cooling System of the present utility model, comprise the water main pipe 2 that the sweet-water tank of cooling water source 1 and output demineralized water are provided, sweet-water tank 1 wherein provides cooling and desalting water for whole steam power plant needs cooling equipment, and water main pipe 2 provides connection for all cooling lines, in described water main pipe 2, be connected with feeding spraying pump 3, output at feeding spraying pump 3 has been arranged in parallel flushing line 7 and spray pipeline 6, on described flushing line 7, be provided with high pressure washing water pump 5 and Flushing nozzle, the port of export of described spray pipeline 6 is provided with atomizer.Owing to spraying and rinsing two operations and can not work simultaneously, therefore this programme makes feeding spraying pump 3 alternations, respectively by flushing line 7 and spray pipeline 6 work, this programme is when needs rinse, by being outputted on flushing line 7 of feeding spraying pump 3, after the high pressure washing water pump 5 that is positioned at air cooling system place is received demineralized water, by Flushing nozzle, demineralized water is sprayed, cleaning personnel clean air cooling tube bank 8 by controlling Flushing nozzle.After cleaning completes, then by being outputted on spray pipeline 6 of feeding spraying pump 3, then by the atomizer of the spray pipeline port of export by offering the cooling fan of air cooling system after demineralized water atomization, air cooling system is carried out to spraying cooling.By said structure this programme, can realize dual-use, realizing air cooling system and realize in cooling the cleaning of air cooling tube bank, avoid adopting respectively in prior art the cost that two cover systems bring to increase and the low problem of utilization ratio.And this programme adopt the supporting feeding spraying pump of former air cooling system on power and lift all with on-the-spot air cooling system state matches, therefore in power consumption, also greatly reduce.

For improving the recycling of demineralized water, described high pressure washing water pump of the present utility model 5 places are provided with the return water tank 9 of the demineralized water that reclaims cooling high pressure washing water pump, in described water main pipe 2, be provided with the centrifugal pump 10 being connected with described return water tank 9, described centrifugal pump 10 is drawn into the demineralized water in return water tank 9 in water main pipe 2.

High pressure washing water pump needs cooling when work, therefore the general design of prior art is all on the pipeline of feeding spraying pump, directly to draw demineralized water to carry out cooling, but the demineralized water after using and the overflow water in flushing pump work all cannot directly be used in flushing or spray process, therefore can only be discharged in puddle, this partial deionization water has all been wasted, the utility model arranges two control valves in water main pipe, then a centrifugal pump is set on the pipeline between two control valves, utilize centrifugal pump that the demineralized water in row's melt pit is directly joined in water main pipe, make the demineralized water of this part cooling high pressure washing water pump and the overflow water of high-pressure pump itself be recycled utilization.Owing to directly using deaerated water charging pump as flush water pump in prior art, its power is large, the cooling water of cooling high pressure washing water pump is under its large pressure, discharge is also large relatively, the waste causing is thus just larger, after adopting this programme, utilize low power feeding spraying pump in the situation that meeting work requirements, the cooling water of high pressure washing water pump and overflow discharge amount are also greatly reduced.

For improving cleaning efficiency, described feeding spraying pump 3 of the present utility model is provided with two and be connected in parallel on respectively in water main pipe 2, and described high pressure washing water pump 5 is provided with two and be connected in parallel on the output of feeding spraying pump 3.Adopt this structure can double parallel to use, or the mode of the using and the reserved, improved the adaptability of whole system.For convenience of the switching of rinsing and spraying, the utility model is respectively arranged with control valve 4 at the two ends of described feeding spraying pump 3, between described high pressure washing water pump 5 and spray pipeline 6 and the output of feeding spraying pump 3, is respectively arranged with control valve 4.When needs are realized difference in functionality, by each control valve of switch, can realize the startup of one or two feeding spraying pump, and by the control valve on switch flushing line 7 and spray pipeline 6, can rinse and spray the switching of two kinds of functions.

The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model with preferred embodiment openly as above, yet not in order to limit the utility model, any technical staff who is familiar with this patent is not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of the utility model scheme.

Claims (4)

1. A flushing spray recovery system for the air-cooling system of a thermal power plant, including a desalinated water tank (1) that provides cooling water and a main water supply pipe (2) that outputs desalinated water. The main water supply pipe (2) is connected to a spray The water pump (30), characterized in that the output end of the spray water pump (3) is provided with a flushing pipeline (7) and a spray pipeline (6) in parallel, and the flushing pipeline (7) is provided with a high pressure The water pump (5) and the nozzle are flushed, and the outlet end of the spray pipeline (6) is provided with an atomizing nozzle. the 2. The flushing and spray recovery system according to claim 1, characterized in that, the high-pressure flushing water pump (5) is provided with a recovery water tank for recovering and cooling the demineralized water of the high-pressure flushing water pump (5) and the overflow water of the high-pressure flushing water pump (9), the water supply main pipe (2) is provided with a centrifugal pump (10) connected to the recovery water tank (9), and the centrifugal pump (10) pumps the desalted water in the recovery water tank (9) to Inside the jellyfish pipe (2). the 3. The flushing and spraying recovery system according to claim 1, characterized in that there are two spraying water pumps (3) which are respectively connected in parallel to the main water supply pipe (2), and the high-pressure flushing water pump (5 ) There are two sets and they are set in parallel. the 4. The flushing and spraying recovery system according to claim 1, characterized in that, the two ends of the spraying water pump (3) are respectively provided with control valves (4), and the high-pressure flushing water pump (5) and the spraying Control valves are arranged on the pipelines between the pipeline (6) and the spray water pump (3). the

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