CN215491150U

CN215491150U - Spraying device of direct air cooling system

Info

Publication number: CN215491150U
Application number: CN202120739777.5U
Authority: CN
Inventors: 张涛; 潘芸; 段佳奇; 胡立恺; 毕仕娅
Original assignee: Huadian Heavy Industries Co Ltd
Current assignee: Huadian Technology Co.,Ltd.
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-01-11
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a spraying device of a direct air cooling system, which comprises a steam exhaust device, a transverse steam exhaust pipeline, a vertical steam exhaust pipeline and an air cooling system which are sequentially connected, wherein the transverse steam exhaust pipeline is connected with the spraying device, the spraying device comprises a spraying main pipe, a spraying branch pipe and a plurality of nozzles, one end of the spraying main pipe is communicated and connected with the side wall of the transverse steam exhaust pipeline, one end of the spraying branch pipe penetrates through the side wall of the transverse steam exhaust pipeline, the other end of the spraying main pipe is connected with the other end of the spraying branch pipe, the other end of the spraying main pipe is provided with a condensation water tank and a desalting water tank, one end of the spraying branch pipe penetrating through the side wall of the transverse steam exhaust pipeline and the nozzles are uniformly arranged in the transverse steam exhaust pipeline, and the nozzles are arranged on the spraying branch pipe. The utility model has simple structure and convenient maintenance and use, improves the production capacity of a power plant, achieves zero loss of desalted water, reduces zero pollution to fins, and has zero threat to main transformer equipment at the bottom of an air cooling island.

Description

Spraying device of direct air cooling system

Technical Field

The utility model relates to a spraying device of a direct air cooling system, and belongs to the technical field of cooling systems.

Background

The direct air cooling system (air cooling island) is mainly installed in the northern thermal power plant at present, and mainly uses air to directly cool the exhaust steam of a steam turbine, and the heat exchange is carried out between the air and the exhaust steam. The condenser with direct air cooling is called as air cooling condenser and is composed of a tube bundle of elliptic flat base tubes brazed with aluminum fins. The cooling air required by the direct air cooling system is usually supplied directly by mechanical ventilation. The steam turbine exhaust steam is sent to the open air condenser in through thick exhaust pipe, and axial compressor cooling blower makes the air flow through the radiator surface, makes the exhaust steam condense into water and gets into the hot-well, sends into the backheat system of steam turbine through condensate pump again, and along with the increase of air cooling island operation age, the air cooling island wholeness can descend seriously, and the main means is installation atomizing system and the dilatation transformation to existing air cooling island at present.

The cost for expanding and transforming the air cooling island is extremely high, and most of power plants are difficult to be transformed by funds under the condition that the annual utilization hours of the existing thermal power plants are continuously reduced. At present, most power plants adopt a mode that a set of water spray system is installed for an air cooling island, and the system is characterized in that a certain number of water spray nozzles are installed in each unit of the air cooling island, and the water spray nozzles are used for spraying in the units to reduce the back pressure of the units in summer when the units are in high load. Although the installation of the system can reduce the back pressure of the unit, the system has the following problems: 1. a large amount of demineralized water is required to be adopted by the spraying system, and the system cannot effectively recover the used water, so that the waste of water resources is caused, and the characteristic of saving water of an air cooling island is violated; 2. the nozzles arranged in the air cooling island are seriously worn after being used for a period of time, water mist cannot be formed, water drops are finally sprayed on the fins, and the fins are polluted after long-term use; 3. the system needs to install a large number of pipelines and nozzles in each unit of the air cooling island, and is complex and expensive to install and maintain; 4. water formed by spraying falls onto a main transformer of a power plant below the air cooling island, and the flashover of the transformer is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a spraying device of a direct air cooling system, which can make up the influence of the rising of the ambient temperature of air on the heat dissipation capacity of an air cooling island, effectively improve the heat dissipation efficiency of the air cooling island, reduce the influence of the performance of the air cooling island of a high-temperature direct air cooling unit in summer, improve the production capacity of a power plant, and realize zero loss of desalted water, zero pollution to fins, zero threat to main transformer equipment at the bottom of the air cooling island and the like.

In order to solve the technical problems, the utility model adopts the following technical scheme: a spraying device of a direct air cooling system comprises a steam exhaust device, a transverse steam exhaust pipeline, a vertical steam exhaust pipeline and an air cooling system which are sequentially connected, wherein the transverse steam exhaust pipeline is connected with a spraying device, the spraying device comprises a spraying main pipe, a spraying branch pipe and a plurality of nozzles, one end of the spraying main pipe is communicated and connected with the side wall of the transverse steam exhaust pipeline, one end of the spraying branch pipe penetrates through the side wall of the transverse steam exhaust pipeline, the other end of the spraying main pipe is connected with the other end of the spraying branch pipe, the other end of the spraying main pipe is provided with a condensation water tank and a desalting water tank, one end of the spraying branch pipe penetrating through the side wall of the transverse steam exhaust pipeline and the nozzles are uniformly arranged in the transverse steam exhaust pipeline, and the nozzles are arranged on the spraying branch pipe; can compensate the influence of air ambient temperature rising to air cooling island heat-sinking capability, effectively improve the radiating efficiency of air cooling island, the influence of the direct air cooling island performance of high temperature air cooling unit in summer has been reduced, the productivity of power plant has been improved, zero loss of demineralized water can also be accomplished, it arranges in horizontal steam extraction pipeline to run through spraying branch pipe one end and the nozzle equipartition of horizontal steam extraction pipeline lateral wall, water droplet has been reduced and has been zero to the fin pollution, to zero threats such as main transformer equipment in air cooling island bottom.

The spraying device of the direct air cooling system is characterized in that a first multistage water pump is arranged on a pipe section between the desalting water tank and the spraying branch pipe, and a first manual water inlet ball valve is arranged on a pipe section between the first multistage water pump and the desalting water tank.

The spraying device of the direct air cooling system is characterized in that a first water outlet check valve, a first water outlet manual ball valve, an electric adjusting ball valve and a flowmeter are sequentially arranged on a pipe section between a first multistage water pump and a spraying branch pipe, and a unit water pump drain pipe is arranged on the pipe section between the first water outlet manual ball valve and the electric adjusting ball valve.

The spraying device of the direct air cooling system comprises a spraying branch pipe, a spraying main pipe and a spraying main pipe, wherein the spraying branch pipe comprises a first branch pipe and a second branch pipe, the first branch pipe comprises a first pipe section and a second pipe section, the first pipe section is communicated with the second pipe section, the first pipe section penetrates through the side wall of the transverse steam exhaust pipeline and is connected with the side wall of the transverse steam exhaust pipeline, the second pipe section is arranged in the transverse steam exhaust pipeline, the second branch pipe is arranged in the transverse steam exhaust pipeline, the second pipe section is connected with the second branch pipe, the first pipe section is connected with the spraying main pipe, a branch pipe manual ball valve and a branch pipe electric ball valve are arranged on the first pipe section, a flow sensor, a pressure sensor and a thermometer pressure detection point are sequentially arranged on the pipe section between the branch pipe electric ball valve and the side wall of the transverse steam exhaust pipeline, a drainage ball valve is arranged at one end, far away from the first pipe section, and nozzles are arranged on the second branch pipe at equal intervals; the flow sensor, the pressure sensor and the thermometer pressure detection point are arranged, all-round monitoring and protection of the system are achieved, the automatic intelligent requirement is met, the number of the input nozzles can be automatically completed through monitoring of air cooling island backpressure, and the flexibility of the system is improved.

According to the spraying device of the direct air cooling system, the first branch pipe and the second branch pipe are provided with a plurality of the first branch pipes and the second branch pipes, two adjacent first branch pipes are arranged in parallel horizontally, and two adjacent second branch pipes are arranged in parallel horizontally.

In the spraying device of the direct air cooling system, the spraying main pipe is further provided with a standby pipeline, one end of the standby pipeline is connected to a pipe section between the desalting water tank and the first water inlet manual ball valve, the other end of the standby pipeline is connected to a pipe section between the first water outlet manual ball valve and the unit water pump drain pipe, the standby pipeline is sequentially provided with a second water inlet manual ball valve, a second multistage water pump, a second water outlet check valve and a second water outlet manual ball valve, the second water inlet manual ball valve is arranged on one side close to the desalting water tank, and the second water outlet manual ball valve is arranged on one side close to the unit water pump drain pipe; when any one of the first multistage water pump, the first manual water inlet ball valve, the first water outlet check valve and the first manual water outlet ball valve on the spraying main pipe breaks down, the standby pipeline can be started, and the normal operation of the system is ensured.

The spraying device for the direct air cooling system is characterized in that a manual ball valve for water drainage of the unit water pump is arranged on the unit water pump drainage pipe, and the outlet end of the unit water pump drainage pipe is connected with a plant area water return pipeline.

In the spraying device of the direct air cooling system, a pipeline on one side of the condensation water tank is connected with the hot well.

The air cooling system comprises a plurality of steam distribution pipelines, a plurality of groups of cooling tube bundles, a plurality of groups of fan groups and a support frame, the inlets of the steam distribution pipelines are connected with the outlets of the vertical steam exhaust pipelines, the steam distribution pipelines are arranged above the cooling tube bundles and connected with the tops of the cooling tube bundles, the tops of two adjacent groups of cooling tube bundles are in herringbone connection, and the fan groups are arranged at the openings between the two adjacent groups of cooling tube bundles and connected with the support frame.

The spraying device of the direct air cooling system further comprises a field control system, wherein the field control system is connected with the electric adjusting ball valve, the field control system is connected with the branch pipe electric ball valve, the field control system is connected with the flow sensor, the field control system is connected with the pressure sensor, and the field control system is connected with the pressure detection point of the thermometer; the field control system realizes the all-round monitoring and protection of the system, and achieves the automatic intelligent requirement.

Compared with the prior art, the utility model comprises an exhaust device, a transverse exhaust pipeline, a vertical exhaust pipeline and an air cooling system which are connected in sequence, wherein a spraying device is connected on the transverse exhaust pipeline and comprises a spraying main pipe, a spraying branch pipe and a plurality of nozzles, one end of the spraying main pipe is communicated and connected with the side wall of the transverse exhaust pipeline, one end of the spraying branch pipe penetrates through the side wall of the transverse exhaust pipeline, the other end of the spraying main pipe is connected with the other end of the spraying branch pipe, the other end of the spraying main pipe is provided with a condensation water tank and a desalting water tank, one end of the spraying branch pipe penetrating through the side wall of the transverse exhaust pipeline and the nozzles are both arranged in the transverse exhaust pipeline, and the nozzles are arranged on the spraying branch pipe; the utility model can compensate the influence of the rising of the air environment temperature on the heat dissipation capacity of the air cooling island, effectively improve the heat dissipation efficiency of the air cooling island, reduce the influence of the performance of the air cooling island of the high-temperature direct air cooling unit in summer, improve the production capacity of a power plant, realize zero loss of desalted water, and zero threat to main transformer equipment at the bottom of the air cooling island. The utility model has the characteristics of simple structure, convenient maintenance and use and excellent cooling performance, reduces the coal consumption and the water consumption on the basis of effectively ensuring the normal and stable operation of the unit, and improves the economic benefit. The utility model is not influenced by environmental climate and the existing arrangement of the air cooling island, and does not need to carry out large transformation construction and the like in the air cooling island; one end of a spray branch pipe penetrating through the side wall of the transverse steam exhaust pipeline and a nozzle are uniformly arranged in the transverse steam exhaust pipeline, zero pollution of water drops to fins is reduced, zero threats to main transformer equipment and the like at the bottom of an air cooling island are avoided, anti-drenching treatment is not needed to be carried out on equipment below the air cooling island, 100% of sprayed and atomized desalted water can be contacted with steam in the large steam exhaust pipeline and participate in heat exchange, the desalted water condensed into water can flow back to a condensation water tank of the air cooling island, a pipeline is arranged in the condensation water tank to recycle the sprayed desalted water to the desalting water tank, so that the desalted water can be recycled, and the water condensed by the steam is continuously used according to the prior process flow; the utility model is provided with a flow sensor, a pressure sensor and a thermometer pressure detection point, realizes the omnibearing monitoring and protection of the system, achieves the automatic intelligent requirement, can automatically finish the quantity of the input nozzles by monitoring the backpressure of the air cooling island, improves the flexibility of the system, when the environmental temperature is more than 30 ℃, and the fan set of the air cooling island is at the highest rotation speed of 55Hz, and the backpressure of the steam turbine is designed to be the backpressure, the thermometer pressure detection point detects the temperature and sends out a signal, the field control system receives the information and starts a first multi-stage water pump in time and opens an electric adjusting ball valve, the nozzle starts to spray water, and the backpressure can be reduced by 3-4Kpa at the moment. When the ambient temperature is reduced to 28 ℃, the thermometer pressure detection point detects the temperature and sends a signal, and the field control system receives the information, stops the first multistage water pump and closes the electric regulating ball valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing the construction of an air cooling system according to the present invention;

fig. 3 is a schematic structural diagram of the field control system of the present invention.

Reference numerals: 1-a steam exhaust device, 2-a transverse steam exhaust pipeline, 3-a vertical steam exhaust pipeline, 4-an air cooling system, 5-a spray device, 6-a spray main pipe, 7-a spray branch pipe, 8-a spray nozzle, 9-a condensate tank, 10-a desalting water tank, 11-a first multi-stage water pump, 12-a first water inlet manual ball valve, 13-a first water outlet check valve, 14-a first water outlet manual ball valve, 15-an electric regulating ball valve, 16-a flow meter, 17-a unit water pump drain pipe, 18-a first branch pipe, 19-a second branch pipe, 20-a first pipe section, 21-a second pipe section, 22-a branch pipe manual ball valve, 23-a branch pipe electric ball valve, 24-a flow sensor, 25-a pressure sensor and 26-a thermometer pressure detection point, 27-a drainage ball valve, 28-a spare pipeline, 29-a second water inlet manual ball valve, 30-a second multi-stage water pump, 31-a second water outlet check valve, 32-a second water outlet manual ball valve, 33-a unit water pump drainage manual ball valve, 34-a plant area water return pipeline, 35-a hot well, 36-a steam distribution pipeline, 37-a cooling pipe bundle, 38-a fan unit, 39-a support frame and 40-a field control system.

The utility model is further described with reference to the following figures and detailed description.

Detailed Description

Example 1 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; can compensate the influence of air ambient temperature rising to air cooling island heat-sinking capability, effectively improve the radiating efficiency in air cooling island, the influence of the direct air cooling island performance of high temperature air cooling unit in summer has been reduced, the productivity of power plant has been improved, can also accomplish the zero loss of demineralized water, run through in horizontal exhaust steam pipeline 2 lateral wall spray branch pipe 7 one end and nozzle 8 equipartitions put in horizontal exhaust steam pipeline 2, the water droplet has been reduced and the fin is zero polluted, zero threats such as main equipment of change to air cooling island bottom.

Example 2 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10.

Example 3 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15.

Example 4 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, all-round monitoring and protection of the system are achieved, automatic intelligent requirements are met, the number of the input nozzles can be automatically finished through monitoring of air cooling island backpressure, and flexibility of the system is improved.

Example 5 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are provided with a plurality of branches, two adjacent first branch pipes 18 are arranged horizontally and parallelly, and two adjacent second branch pipes 19 are arranged horizontally and parallelly.

Example 6 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are both provided with a plurality of pipes, two adjacent first branch pipes 18 are horizontally arranged in parallel, and two adjacent second branch pipes 19 are horizontally arranged in parallel; the spraying main pipe 6 is also provided with a standby pipeline 28, one end of the standby pipeline 28 is connected to a pipe section between the desalting water tank 10 and the first water inlet manual ball valve 12, the other end of the standby pipeline 28 is connected to a pipe section between the first water outlet manual ball valve 14 and the unit water pump drain pipe 17, the standby pipeline 28 is sequentially provided with a second water inlet manual ball valve 29, a second multistage water pump 30, a second water outlet check valve 31 and a second water outlet manual ball valve 32, the second water inlet manual ball valve 29 is arranged on one side close to the desalting water tank 10, and the second water outlet manual ball valve 32 is arranged on one side close to the unit water pump drain pipe 17; when any one of the first multistage water pump 11, the first manual water inlet ball valve 12, the first water outlet check valve 13 and the first manual water outlet ball valve 14 on the spraying main pipe 6 fails, the standby pipeline 28 can be started, and the normal operation of the system is ensured.

Example 7 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are both provided with a plurality of pipes, two adjacent first branch pipes 18 are horizontally arranged in parallel, and two adjacent second branch pipes 19 are horizontally arranged in parallel; the spraying main pipe 6 is also provided with a standby pipeline 28, one end of the standby pipeline 28 is connected to a pipe section between the desalting water tank 10 and the first water inlet manual ball valve 12, the other end of the standby pipeline 28 is connected to a pipe section between the first water outlet manual ball valve 14 and the unit water pump drain pipe 17, the standby pipeline 28 is sequentially provided with a second water inlet manual ball valve 29, a second multistage water pump 30, a second water outlet check valve 31 and a second water outlet manual ball valve 32, the second water inlet manual ball valve 29 is arranged on one side close to the desalting water tank 10, and the second water outlet manual ball valve 32 is arranged on one side close to the unit water pump drain pipe 17; when any one of the first multistage water pump 11, the first manual water inlet ball valve 12, the first water outlet check valve 13 and the first manual water outlet ball valve 14 on the spraying main pipe 6 fails, the standby pipeline 28 can be started to ensure the normal operation of the system; the unit water pump drain pipe 17 is provided with a unit water pump drain manual ball valve 33, and the outlet end of the unit water pump drain pipe 17 is connected with a plant area water return pipeline 34.

Example 8 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are both provided with a plurality of pipes, two adjacent first branch pipes 18 are horizontally arranged in parallel, and two adjacent second branch pipes 19 are horizontally arranged in parallel; the spraying main pipe 6 is also provided with a standby pipeline 28, one end of the standby pipeline 28 is connected to a pipe section between the desalting water tank 10 and the first water inlet manual ball valve 12, the other end of the standby pipeline 28 is connected to a pipe section between the first water outlet manual ball valve 14 and the unit water pump drain pipe 17, the standby pipeline 28 is sequentially provided with a second water inlet manual ball valve 29, a second multistage water pump 30, a second water outlet check valve 31 and a second water outlet manual ball valve 32, the second water inlet manual ball valve 29 is arranged on one side close to the desalting water tank 10, and the second water outlet manual ball valve 32 is arranged on one side close to the unit water pump drain pipe 17; when any one of the first multistage water pump 11, the first manual water inlet ball valve 12, the first water outlet check valve 13 and the first manual water outlet ball valve 14 on the spraying main pipe 6 fails, the standby pipeline 28 can be started to ensure the normal operation of the system; the unit water pump drainage pipe 17 is provided with a unit water pump drainage manual ball valve 33, and the outlet end of the unit water pump drainage pipe 17 is connected with a plant area water return pipeline 34; and a hot well 35 is connected to a pipeline at one side of the condensation water tank 9.

Example 9 of the utility model: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are both provided with a plurality of pipes, two adjacent first branch pipes 18 are horizontally arranged in parallel, and two adjacent second branch pipes 19 are horizontally arranged in parallel; the spraying main pipe 6 is also provided with a standby pipeline 28, one end of the standby pipeline 28 is connected to a pipe section between the desalting water tank 10 and the first water inlet manual ball valve 12, the other end of the standby pipeline 28 is connected to a pipe section between the first water outlet manual ball valve 14 and the unit water pump drain pipe 17, the standby pipeline 28 is sequentially provided with a second water inlet manual ball valve 29, a second multistage water pump 30, a second water outlet check valve 31 and a second water outlet manual ball valve 32, the second water inlet manual ball valve 29 is arranged on one side close to the desalting water tank 10, and the second water outlet manual ball valve 32 is arranged on one side close to the unit water pump drain pipe 17; when any one of the first multistage water pump 11, the first manual water inlet ball valve 12, the first water outlet check valve 13 and the first manual water outlet ball valve 14 on the spraying main pipe 6 fails, the standby pipeline 28 can be started to ensure the normal operation of the system; the unit water pump drainage pipe 17 is provided with a unit water pump drainage manual ball valve 33, and the outlet end of the unit water pump drainage pipe 17 is connected with a plant area water return pipeline 34; a pipeline at one side of the condensation water tank 9 is connected with a hot well 35; the air cooling system 4 comprises a plurality of steam distribution pipelines 36, a plurality of cooling tube bundles 37, a plurality of fan sets 38 and a support frame 39, inlets of the steam distribution pipelines 36 are connected with outlets of the vertical steam exhaust pipelines 3, the steam distribution pipelines 36 are arranged above the cooling tube bundles 37 and connected with the tops of the cooling tube bundles 37, the tops of the two adjacent cooling tube bundles 37 are connected in a herringbone mode, and the fan sets 38 are arranged at openings between the two adjacent cooling tube bundles 37 and connected with the support frame 39.

Example 10 of the present invention: a spray device of a direct air cooling system comprises a steam exhaust device 1, a transverse steam exhaust pipeline 2, a vertical steam exhaust pipeline 3 and an air cooling system 4 which are sequentially connected, wherein the transverse steam exhaust pipeline 2 is connected with a spray device 5, the spray device 5 comprises a spray main pipe 6, a spray branch pipe 7 and a plurality of nozzles 8, one end of the spray main pipe 6 is communicated with the side wall of the transverse steam exhaust pipeline 2, one end of the spray branch pipe 7 penetrates through the side wall of the transverse steam exhaust pipeline 2, the other end of the spray main pipe 6 is connected to the other end of the spray branch pipe 7, the other end of the spray main pipe 6 is provided with a condensation water tank 9 and a desalting water tank 10, one end of the spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and the nozzles 8 are both arranged in the transverse steam exhaust pipeline 2, and the nozzles 8 are arranged on the spray branch pipe 7; the influence of the rising of the ambient temperature of the air on the heat dissipation capacity of the air cooling island can be compensated, the heat dissipation efficiency of the air cooling island is effectively improved, the influence of the performance of the high-temperature direct air cooling unit air cooling island in summer is reduced, the production capacity of a power plant is improved, zero loss of desalted water can be realized, one end of a spray branch pipe 7 penetrating through the side wall of the transverse steam exhaust pipeline 2 and one end of a nozzle 8 are both arranged in the transverse steam exhaust pipeline 2, zero pollution of water drops to fins is reduced, and zero threats to main transformer equipment at the bottom of the air cooling island and the like are reduced; a first multistage water pump 11 is arranged on a pipe section between the desalting water tank 10 and the spray branch pipe 7, and a first manual water inlet ball valve 12 is arranged on a pipe section between the first multistage water pump 11 and the desalting water tank 10; a first water outlet check valve 13, a first water outlet manual ball valve 14, an electric adjusting ball valve 15 and a flow meter 16 are sequentially arranged on a pipe section between the first multistage water pump 11 and the spray branch pipe 7, and a unit water pump drain pipe 17 is arranged on the pipe section between the first water outlet manual ball valve 14 and the electric adjusting ball valve 15; the spraying branch pipe 7 comprises a first branch pipe 18 and a second branch pipe 19, the first branch pipe 18 comprises a first pipe section 20 and a second pipe section 21, the first pipe section 20 is communicated with the second pipe section 21, the first pipe section 20 penetrates through the side wall of the transverse steam exhaust pipeline 2 and is connected with the side wall of the transverse steam exhaust pipeline 2, the second pipe section 21 is arranged in the transverse steam exhaust pipeline 2, the second branch pipe 19 is arranged in the transverse steam exhaust pipeline 2, the second pipe section 21 is connected with the second branch pipe 19, the first pipe section 20 is connected with the spraying main pipe 6, the first pipe section 20 is provided with a branch pipe manual ball valve 22 and a branch pipe electric ball valve 23, the pipe section between the branch pipe electric ball valve 23 and the side wall of the transverse steam exhaust pipeline 2 is sequentially provided with a flow sensor 24, a pressure sensor 25 and a thermometer pressure detection point 26, wherein one end of the second pipe section 21 far away from the first pipe section 20 is provided with a drain ball valve 27, and the nozzles 8 are arranged on the second branch pipe 19 at equal intervals; the flow sensor 24, the pressure sensor 25 and the thermometer pressure detection point 26 are arranged, so that the system can be monitored and protected in all directions, the automatic intelligent requirement is met, the number of the input nozzles can be automatically finished by monitoring the back pressure of the air cooling island, and the flexibility of the system is improved; the first branch pipes 18 and the second branch pipes 19 are both provided with a plurality of pipes, two adjacent first branch pipes 18 are horizontally arranged in parallel, and two adjacent second branch pipes 19 are horizontally arranged in parallel; the spraying main pipe 6 is also provided with a standby pipeline 28, one end of the standby pipeline 28 is connected to a pipe section between the desalting water tank 10 and the first water inlet manual ball valve 12, the other end of the standby pipeline 28 is connected to a pipe section between the first water outlet manual ball valve 14 and the unit water pump drain pipe 17, the standby pipeline 28 is sequentially provided with a second water inlet manual ball valve 29, a second multistage water pump 30, a second water outlet check valve 31 and a second water outlet manual ball valve 32, the second water inlet manual ball valve 29 is arranged on one side close to the desalting water tank 10, and the second water outlet manual ball valve 32 is arranged on one side close to the unit water pump drain pipe 17; when any one of the first multistage water pump 11, the first manual water inlet ball valve 12, the first water outlet check valve 13 and the first manual water outlet ball valve 14 on the spraying main pipe 6 fails, the standby pipeline 28 can be started to ensure the normal operation of the system; the unit water pump drainage pipe 17 is provided with a unit water pump drainage manual ball valve 33, and the outlet end of the unit water pump drainage pipe 17 is connected with a plant area water return pipeline 34; a pipeline at one side of the condensation water tank 9 is connected with a hot well 35; the air cooling system 4 comprises a plurality of steam distribution pipelines 36, a plurality of cooling tube bundles 37, a plurality of fan sets 38 and a support frame 39, wherein inlets of the steam distribution pipelines 36 are connected with outlets of the vertical steam exhaust pipelines 3, the steam distribution pipelines 36 are arranged above the cooling tube bundles 37 and connected with the tops of the cooling tube bundles 37, the tops of two adjacent cooling tube bundles 37 are connected in a herringbone mode, and the fan sets 38 are arranged at openings between the two adjacent cooling tube bundles 37 and connected with the support frame 39; the temperature measuring device further comprises a field control system 40, wherein the field control system 40 is connected with the electric adjusting ball valve 15, the field control system 40 is connected with the branch pipe electric ball valve 23, the field control system 40 is connected with the flow sensor 24, the field control system 40 is connected with the pressure sensor 25, and the field control system 40 is connected with the thermometer pressure detecting point 26; the site control system 40 realizes all-round monitoring and protection to the system, has reached the automatic intelligent requirement, when ambient temperature >30 ℃, and the air cooling island fan unit is already at the highest rotational speed 55Hz, and when the backpressure of the steam turbine designs the backpressure, the thermometer pressure detection point 26 detects the temperature, sends a signal, and the site control system 40 receives the information and starts the first multistage water pump 11 in time and opens the electric regulating ball valve 15, and the nozzle 8 begins to spray water, should reduce the backpressure by 3-4Kpa at this moment. When the ambient temperature is reduced to 28 ℃, the thermometer pressure detection point 26 detects the temperature and sends a signal, and the field control system 40 receives the signal and stops the first multistage water pump 11 and closes the electric regulating ball valve 15.

The working principle of one embodiment of the utility model is as follows: when the utility model works, the steam exhaust device 1 is started, the transverse steam exhaust pipeline 2 is filled with steam, the first water inlet manual ball valve 12, the first multistage water pump 11, the first water outlet check valve 13, the first water outlet manual ball valve 14 and the electric adjusting ball valve 15 are opened at the same time, the brine in the desalting water tank 10 is distributed to the spraying branch pipes 7 through the spraying main pipe 6, the branch pipe manual ball valve 22 is opened, the brine in the spraying branch pipes 7 enters the second branch pipes 19, the nozzles 8 spray the brine in the second branch pipes 19, the brine sprayed out from the nozzles 8 is fully contacted with the steam in the transverse steam exhaust pipeline 2, and the steam is condensed into water.

Claims

1. The spraying device of the direct air cooling system is characterized by comprising a steam exhaust device (1), a transverse steam exhaust pipeline (2), a vertical steam exhaust pipeline (3) and an air cooling system (4) which are sequentially connected, wherein the transverse steam exhaust pipeline (2) is connected with a spraying device (5), the spraying device (5) comprises a spraying main pipe (6), a spraying branch pipe (7) and a plurality of nozzles (8), one end of the spraying main pipe (6) is communicated and connected with the side wall of the transverse steam exhaust pipeline (2), one end of the spraying branch pipe (7) penetrates through the side wall of the transverse steam exhaust pipeline (2), the other end of the spraying main pipe (6) is connected with the other end of the spraying branch pipe (7), the other end of the spraying main pipe (6) is provided with a condensation water tank (9) and a desalting water tank (10), one end of the spraying branch pipe (7) penetrating through the side wall of the transverse steam exhaust pipeline (2) and the nozzles (8) are uniformly arranged in the transverse steam exhaust pipeline (2), the nozzles (8) are arranged on the spray branch pipes (7).

2. A direct air cooling system spraying device according to claim 1, characterized in that a first multi-stage water pump (11) is arranged on the pipe section between the demineralized water tank (10) and the spraying branch pipe (7), and a first manual ball valve (12) for water inlet is arranged on the pipe section between the first multi-stage water pump (11) and the demineralized water tank (10).

3. The direct air cooling system spraying device according to claim 2, wherein a first water outlet check valve (13), a first water outlet manual ball valve (14), an electric adjusting ball valve (15) and a flow meter (16) are sequentially arranged on a pipe section between the first multistage water pump (11) and the spraying branch pipe (7), and a unit water pump drain pipe (17) is arranged on the pipe section between the first water outlet manual ball valve (14) and the electric adjusting ball valve (15).

4. The spraying device of the direct air-cooling system according to claim 1, wherein the spraying branch pipe (7) comprises a first branch pipe (18) and a second branch pipe (19), the first branch pipe (18) comprises a first pipe section (20) and a second pipe section (21), the first pipe section (20) is communicated with the second pipe section (21), the first pipe section (20) penetrates through the side wall of the transverse steam exhaust pipeline (2) and is connected with the side wall of the transverse steam exhaust pipeline (2), the second pipe section (21) is arranged in the transverse steam exhaust pipeline (2), the second branch pipe (19) is arranged in the transverse steam exhaust pipeline (2), the second pipe section (21) is connected with the second branch pipe (19), the first pipe section (20) is connected with the spraying main pipe (6), the first pipe section (20) is provided with a manual branch ball valve (22) and an electric branch pipe (23), and a flow sensor (24) is sequentially arranged on the branch pipe between the electric ball valve (23) and the side wall of the transverse steam exhaust pipeline (2) ) The water-saving and temperature-measuring device comprises a pressure sensor (25) and a temperature gauge pressure detection point (26), wherein a drain ball valve (27) is arranged at one end, far away from the first pipe section (20), of the second pipe section (21), and nozzles (8) are arranged on a second branch pipe (19) at equal intervals.

5. A direct air cooling system spraying device according to claim 4, characterized in that a plurality of first branch pipes (18) and a plurality of second branch pipes (19) are provided, two adjacent first branch pipes (18) are arranged horizontally in parallel, and two adjacent second branch pipes (19) are arranged horizontally in parallel.

6. A direct air cooling system spraying device according to claim 3, characterized in that the spraying main pipe (6) is further provided with a spare pipe (28), one end of the spare pipe (28) is connected to a pipe section between the demineralized water tank (10) and the first manual water inlet ball valve (12), the other end of the spare pipe (28) is connected to a pipe section between the first manual water outlet ball valve (14) and the unit water pump drain pipe (17), the spare pipe (28) is sequentially provided with a second manual water inlet ball valve (29), a second multi-stage water pump (30), a second water outlet check valve (31) and a second manual water outlet ball valve (32), the second manual water inlet ball valve (29) is arranged at a side close to the demineralized water tank (10), and the second manual water outlet ball valve (32) is arranged at a side close to the unit water pump drain pipe (17).

7. A spray device of a direct air cooling system according to claim 3, characterized in that a manual ball valve (33) for water discharge of the unit water pump is arranged on the unit water pump water discharge pipe (17), and the outlet end of the unit water pump water discharge pipe (17) is connected with a plant area water return pipeline (34).

8. A direct air cooling system spraying device according to claim 1, characterized in that a hot well (35) is piped to one side of the condensation tank (9).

9. A direct air cooling system spraying device according to claim 1, characterized in that the air cooling system (4) comprises a plurality of steam distribution pipes (36), a plurality of cooling tube bundles (37), a plurality of fan sets (38) and a support frame (39), the inlets of the steam distribution pipes (36) are connected with the outlets of the vertical steam exhaust pipes (3), the steam distribution pipes (36) are arranged above the cooling tube bundles (37) and connected with the tops of the cooling tube bundles (37), the tops of two adjacent cooling tube bundles (37) are connected in a herringbone manner, and the fan sets (38) are arranged at the openings between two adjacent cooling tube bundles (37) and connected with the support frame (39).

10. A direct air cooling system spraying apparatus according to claim 4, further comprising an on-site control system (40), wherein the on-site control system (40) is connected to the electric regulating ball valve (15), the on-site control system (40) is connected to the branch electric ball valve (23), the on-site control system (40) is connected to the flow sensor (24), the on-site control system (40) is connected to the pressure sensor (25), and the on-site control system (40) is connected to the thermometer pressure detecting point (26).