Water spraying and atomizing temperature adjusting device for steam turbine of coal-fired power plant

Abstract

The invention relates to the technical field of steam turbine water spraying, atomizing and temperature adjusting equipment, and discloses a coal-fired power plant steam turbine water spraying, atomizing and temperature adjusting device which comprises a steam discharging mechanism, the steam discharging mechanism comprises a steam pipeline, an air inlet is formed in the lower end of the steam pipeline, and an air outlet is formed in the upper end of the steam pipeline in a communicating mode; a cooling mechanism is arranged at the upper end of the steam discharging mechanism and comprises a cooling-water machine installed at the upper end of the steam pipeline, a spraying pipe is arranged at the lower end of the cooling-water machine, a first spraying head is arranged at the lower end of the spraying pipe, steam can be sprayed into the multiple guide pipes, and after multiple spraying, the steam can be discharged into the steam pipeline through the first spraying head. The cooling efficiency is greatly improved, the distance between the multiple nozzles and the cooling-water machine is closer from bottom to top, and therefore the spraying temperature is gradually reduced, cooling is carried out step by step, generation of hydrogel beads is reduced, repeated heat exchange of steam is avoided, atomization and temperature adjustment are uniform, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine water spray atomization temperature control equipment, in particular to a steam turbine water spray atomization temperature control device for a coal-fired power plant. Background Art

[0002] A steam turbine is a device that converts steam thermal energy into mechanical energy. The steam in a steam turbine is generally in a state of high temperature and high pressure. When processing the exhaust gas of a steam turbine, it is often necessary to perform cooling treatment. In order to cool the steam, after the steam enters the exhaust pipe, the existing technology uses an atomizing nozzle to atomize the liquid. After atomization and cooling, the liquid turns into small droplets and is sprayed out in a mist form, thereby achieving efficient cooling. However, when the steam flows in the intake pipe, the steam will gather into a ball and flow rapidly in the pipe, making it difficult to fully contact with the water mist, resulting in poor cooling effect.

[0003] For example, a thermal power plant steam turbine water spray atomization temperature control device with announcement number CN117211905A. The thermal power plant steam turbine water spray atomization temperature control device comprises: a water tank; a temperature control box, the temperature control box is fixedly installed on the top of the water tank; an air intake pipe, the air intake pipe is arranged on one side of the temperature control box; an exhaust pipe, the exhaust pipe is arranged on one side of the temperature control box; a plurality of exhaust holes, the plurality of exhaust holes are all opened on the exhaust pipe; an atomization temperature control mechanism, the atomization temperature control mechanism is arranged on the temperature control box, the atomization temperature control mechanism is used to adjust the temperature of high-temperature water vapor; a water guide mechanism, the water guide mechanism is arranged on the water tank, the water guide mechanism is used to inject cold water in the water tank into the atomization temperature control mechanism. The thermal power plant steam turbine water spray atomization temperature control device can make water vapor and low-temperature water mist mix more evenly, has a higher temperature control effect, and has strong practicality.

[0004] Although traditional temperature control devices can atomize and cool steam, there will be uneven temperature during the circulation of steam. After the high-temperature steam is cooled by the temperature control mechanism at the lower end, it will be heated again when it encounters the hotter steam above, thus affecting the steam emission rate and having a poor use effect.

[0005] Therefore, we propose a water spray atomization temperature control device for a steam turbine in a coal-fired power plant to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a water spray atomization temperature control device for a steam turbine in a coal-fired power plant, so as to solve the problem that the temperature of steam is uneven during the circulation process proposed in the above background technology. After the high-temperature steam is cooled by the temperature control mechanism at the lower end, it will be heated again when it encounters the hotter steam above, thereby affecting the steam discharge rate and resulting in poor use effect.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a water spray atomization temperature control device for a steam turbine in a coal-fired power plant, comprising a steam discharge mechanism, the steam discharge mechanism comprising a steam pipe, the lower end of the steam pipe is provided with an air inlet, and the upper end of the steam pipe is connected to a gas outlet; A cooling mechanism is provided at the upper end of the steam discharge mechanism, and the cooling mechanism includes a water chiller installed at the upper end of the steam pipe, a spray pipe is provided at the lower end of the water chiller, and a first nozzle is provided at the lower end of the spray pipe; A circulation mechanism is arranged inside the steam discharge mechanism, and the circulation mechanism comprises a motor installed at the upper end of the chiller, a cold water pipe is arranged at the output end of the motor, and a circulation hole is opened on the cold water pipe; A plurality of guide mechanisms are also arranged inside the steam discharge mechanism, and the guide mechanisms include a guide plate arranged inside the steam pipe, a guide pipe is arranged on the guide plate, and the upper and lower guide pipes are in opposite positions, and a second nozzle is opened on the side wall of the guide pipe.

[0008] Preferably, a drainage hole is provided at the lower end of the steam pipe, and a sliding groove is provided on the side wall of the steam pipe.

[0009] Preferably, a stirring rod is fixedly installed on the outer periphery of the cold water pipe, and the stirring rod is rotatably installed inside the chiller. A plurality of limit blocks are arranged on the outer periphery of the lower end of the cold water pipe, and a bidirectional spiral groove is provided between two adjacent limit blocks.

[0010] Preferably, the guide plate is slidably installed in the adjacent limit block, a first slider is opened on the outer periphery of the guide plate, the first slider is slidably installed in the slide groove, a second slider is fixedly installed in the middle of the guide plate, and the second slider is slidably installed in the bidirectional spiral groove.

[0011] Preferably, a water storage cylinder is provided at the upper end of the guide plate, and an extrusion rod is fixedly mounted at the upper end of the water storage cylinder.

[0012] Preferably, a storage mechanism is provided at the upper end of the guide mechanism, and the storage mechanism comprises a sponge pad arranged in the water storage cylinder body, an avoidance hole is opened on the sponge pad, and the guide tube is located in the avoidance hole.

[0013] Preferably, a collecting mechanism is provided at the lower end of the guide mechanism, and the collecting mechanism comprises an inclined plate fixedly mounted at the lower end of the guide plate, the height of the central part of the inclined plate is higher than the height of the surrounding parts, and a plurality of mounting holes are circumferentially opened on the inclined plate.

[0014] Preferably, a collecting box is fixedly mounted on the outer periphery of the lower end of the inclined plate, the collecting box is made of a rubber structure, a water inlet is opened at the upper end of the inner wall of the collecting box, and the water inlet is connected to the top of the inclined plate.

[0015] Preferably, a connecting mechanism is provided inside the guide mechanism, and the connecting mechanism includes a flow cylinder fixedly installed inside the mounting hole, the flow cylinder is adapted to the mounting hole, a plug interface is opened at the lower end of the flow cylinder, and the extrusion rod is arranged at the lower end of the plug interface.

[0016] Preferably, an elastic member is installed inside the circulation cylinder, a blocking block is fixedly installed on the upper end of the elastic member, the blocking block is snap-fitted to the upper end of the circulation cylinder, and a connecting rod is commonly installed between the plurality of circulation cylinders.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The high-temperature steam ejected from the steam turbine enters the steam pipe from the air inlet, and after cooling and temperature adjustment, it is ejected from the air outlet. By setting multiple guide plates and guide pipes, the steam flow path is lengthened, so that the high-temperature steam has enough time to cool inside the steam discharge mechanism. The steam can be sprayed inside multiple guide pipes. After multiple spraying, the cooling efficiency is greatly increased, and the steam discharge temperature is more uniform. At the same time, the closer the multiple nozzles are to the chiller from bottom to top, the spraying temperature gradually decreases, and the cooling is carried out step by step, which reduces the generation of condensation beads and avoids repeated heat exchange of steam. The atomization temperature adjustment is more uniform and the use effect is good.

[0018] 2. During the rotation of the water pipe, the guide plate can move up and down reciprocatingly in the cold water pipe. When adjacent guide plates are close to each other, the steam between them is compressed, and the steam flow rate in the guide pipe increases. When adjacent guide plates are separated in an arc, the steam between them diffuses, and the steam flow rate in the guide pipe slows down. That is, the adjacent guide plates move against each other, breaking up the steam trajectory, further disrupting and equalizing the temperature of the steam, and achieving good results.

[0019] 3. The water sprayed from the first nozzle and the second nozzle can be collected by the water storage cylinder at the lower end for subsequent recycling. The water droplets after the steam is cooled adhere to the inclined plate, and the water droplets flow downward along the inclined plate of the inclined structure, and finally enter the collection box through the water inlet for collection. By setting the water storage cylinder and the collection box, the excess cooling water can be collected for later recycling and reduction of water waste.

[0020] 4. When adjacent guide plates are close to each other, the water storage cylinder and sponge pad will squeeze the upper inclined plate and the collection box, and the condensed water on the inclined plate will be absorbed by the sponge pad. The water collected in the collection box can also be absorbed by the sponge pad, which makes it easy to merge the collected water together. When the adjacent guide plates are arc-shaped away from each other, the steam between the two will diffuse and the condensed water can be collected again.

[0021] 5. When adjacent guide plates are close to each other, the extrusion rod is inserted into the circulation cylinder, and the circulation cylinder can circulate up and down. The collected water will enter the interior of the guide plate. The water inside the guide plate can be absorbed by the second nozzle and sprayed out again for secondary utilization. A connecting rod is installed between multiple circulation cylinders, and multiple circulation cylinders can move together, which increases the liquid recovery rate and ensures that multiple blockages can be reset together for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the water spray atomization temperature control device for the steam turbine of this coal-fired power plant; Figure 2 This is a schematic diagram of the steam discharge mechanism structure of the water spray atomization temperature control device of the steam turbine in this coal-fired power plant; Figure 3 This is a schematic diagram of the overall cross-sectional structure of the water spray atomization temperature control device for the steam turbine of this coal-fired power plant; Figure 4 This is a schematic diagram of the circulation mechanism structure of the water spray atomization temperature control device for the steam turbine of this coal-fired power plant; Figure 5 This is a schematic diagram of the guide mechanism structure of the water spray atomization temperature control device for the steam turbine of this coal-fired power plant; Figure 6 This is a schematic diagram of the cross-sectional structure of the guide mechanism of the water spray atomization temperature control device of the steam turbine of the coal-fired power plant; Figure 7 This is a schematic diagram of the connection mechanism structure of the water spray atomization temperature control device of the steam turbine in this coal-fired power plant; Figure 8 This is the water spray atomization temperature control device of the steam turbine in this coal-fired power plant Figure 3 Enlarged view of point A in the middle.

[0023] In the figure: 1. steam discharge mechanism; 11. steam pipe; 12. air inlet; 13. air outlet; 14. drain hole; 15. slide; 2. cooling mechanism; 21. chiller; 22. spray pipe; 23. first nozzle; 3. circulation mechanism; 31. motor; 32. cold water pipe; 33. stirring rod; 34. limit block; 35. two-way spiral groove; 36. circulation hole; 4. guide mechanism; 41. guide plate; 42. water storage cylinder; 43. guide pipe; 44. second nozzle; 45. first slider; 46. second slider; 47. squeeze rod; 5. storage mechanism; 51. sponge pad; 52. avoidance hole; 6. collection mechanism; 61. inclined plate; 62. mounting hole; 63. collection box; 64. water inlet; 7. connecting mechanism; 71. circulation cylinder; 72. plug interface; 73. elastic member; 74. block; 75. connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1-Figure 5 A water spray atomization temperature control device for a steam turbine in a coal-fired power plant comprises a steam discharge mechanism 1, the steam discharge mechanism 1 comprises a steam pipe 11, an air inlet 12 is provided at the lower end of the steam pipe 11, an air outlet 13 is provided at the upper end of the steam pipe 11, high-temperature steam ejected from the steam turbine enters the steam pipe 11 from the air inlet 12, and is ejected from the air outlet 13 after being cooled and temperature controlled.

[0026] A cooling mechanism 2 is provided at the upper end of the steam discharge mechanism 1. The cooling mechanism 2 includes a chiller 21 installed at the upper end of the steam pipe 11. The chiller 21 includes a compressor, an evaporator, a condenser, and some metering devices. Cooling water is injected into the chiller 21. A spray pipe 22 is provided at the lower end of the chiller 21. A first nozzle 23 is provided at the lower end of the spray pipe 22. The cooling water enters the spray pipe 22 and is finally sprayed downward from the first nozzle 23 to cool the high-temperature steam. The first nozzle 23 sprays from top to bottom to atomize the steam. The contact area with the high-temperature steam is large, and the temperature control effect is good.

[0027] A circulation mechanism 3 is arranged inside the steam discharge mechanism 1. The circulation mechanism 3 includes a motor 31 installed at the upper end of the chiller 21. A cold water pipe 32 is arranged at the output end of the motor 31. A circulation hole 36 is opened on the cold water pipe 32. After the motor 31 is turned on, the cold water pipe 32 can be driven to rotate. The cold water in the chiller 21 enters the cold water pipe 32 through the circulation hole 36, so that the entire cold water pipe 32 is in a low temperature state. The cold water pipe 32 is vertically arranged in the steam pipe 11 and can be exposed to high-temperature steam in the vertical direction, further increasing the heat exchange area. The cold water pipe 32 is connected to the chiller 21 through the circulation hole 36, which can continuously supply water and cool the cold water pipe 32, and the use effect is good.

[0028] A plurality of guide mechanisms 4 are also provided inside the steam discharge mechanism 1. The guide mechanism 4 includes a guide plate 41. The guide plate 41 is an annular structure and is arranged inside the steam pipe 11 and also arranged on the periphery of the cold water pipe 32. A guide pipe 43 is provided on the guide plate 41. High-temperature steam is transported from bottom to top through the guide pipe 43. The upper and lower guide pipes 43 are in opposite positions, so that the steam transport path is elongated, which can not only make the temperature of the steam uniform, but also increase the heat exchange time, so that the steam has enough time to be temperature-controlled and cooled before being ejected from the air outlet 13.

[0029] A second nozzle 44 is provided on the side wall of the guide tube 43, and steam flows upward from the guide tube 43. At the same time, the second nozzle 44 also sprays cooling water into the guide tube 43, further increasing the exchange area between cooling water and steam, thereby greatly improving the cooling effect.

[0030] By setting up multiple guide plates 41 and guide tubes 43, the steam flow path is lengthened, so that the high-temperature steam has enough time to cool down inside the steam discharge mechanism 1, and the steam can be sprayed inside the multiple guide tubes 43. After multiple spraying, the cooling efficiency is greatly increased, and the temperature of the steam discharge is also more uniform. At the same time, the closer the multiple nozzles are to the chiller 21 from bottom to top, the spraying temperature gradually decreases, and the cooling is carried out step by step, which reduces the generation of condensation beads and avoids repeated heat exchange of steam. The atomization temperature control is more uniform and the use effect is good. This solves the problem that the temperature of steam is uneven during the circulation process proposed in the background technology. After the high-temperature steam is cooled by the temperature control mechanism at the lower end, it will be heated again when it encounters the hotter steam above, thereby affecting the steam discharge rate and the use effect is not good.

[0031] Example 2: Please refer to Figure 2-Figure 7 A drainage hole 14 is provided at the lower end of the steam pipe 11 , and the liquid sprayed from the multiple spray heads is discharged through the drainage hole 14 .

[0032] A stirring rod 33 is fixedly installed on the periphery of the cold water pipe 32, and the stirring rod 33 is rotatably installed inside the chiller 21, and is used to uniform the temperature of the cooling water inside the chiller 21 and the cold water pipe 32. A plurality of limit blocks 34 are arranged on the periphery of the lower end of the cold water pipe 32, and a slide groove 15 is provided on the side wall of the steam pipe 11. The guide plate 41 is slidably installed in the adjacent limit blocks 34. A first slider 45 is provided on the periphery of the guide plate 41, and the first slider 45 is slidably installed in the slide groove 15. The plurality of guide plates 41 can move up and down independently, thereby increasing the flexibility of the guide plate 41.

[0033] A bidirectional spiral groove 35 is provided on the outer periphery of the cold water pipe 32 between two adjacent limit blocks 34. The bidirectional spiral groove 35 is a groove body with two spiral lines as the path. The two groove bodies are connected end to end to form a whole. A second slider 46 is fixedly installed in the middle of the guide plate 41. The second slider 46 is slidably installed in the bidirectional spiral groove 35. When the cold water pipe 32 rotates, the second slider 46 makes relative motion along the bidirectional spiral groove 35, and the first slider 45 makes up and down linear motion in the slide groove 15. Therefore, after the motor 31 is turned on, the cold water pipe 32 and the stirring rod 33 rotate, and the guide plate 41 can reciprocate up and down in the cold water pipe 32.

[0034] Among them, the upper and lower second sliding blocks 46 are in opposite directions, and the two adjacent multiple guide plates 41 do not move up and down at the same time, but move in opposite directions. When the adjacent guide plates 41 are close to each other, the steam between the two is compressed, and the steam flow rate in the guide tube 43 increases. When the adjacent guide plates 41 move away from each other in an arc, the steam between the two diffuses, and the steam flow rate in the guide tube 43 slows down. That is, the adjacent guide plates 41 move relative to each other, breaking up the steam trajectory, further disrupting and equalizing the temperature of the steam, and having a good use effect.

[0035] Example 3: Please refer to Figure 3-Figure 6 A water storage cylinder 42 is provided at the upper end of the guide plate 41. The water storage cylinder 42 is a cylindrical structure with an upper end open and a lower end closed. The water sprayed by the first nozzle 23 and the second nozzle 44 can be collected by the water storage cylinder 42 at the lower end for subsequent recycling. A savings mechanism 5 is provided at the upper end of the guide mechanism 4. The savings mechanism 5 includes a sponge pad 51 arranged in the water storage cylinder 42. The sponge pad 51 is provided with an avoidance hole 52. The guide tube 43 is located in the avoidance hole 52. The water collected by the water storage cylinder 42 can be absorbed by the sponge pad 51. The up and down movement of the guide plate 41 and the water storage cylinder 42 will not cause water to splash out. It has a certain stability and a good storage effect.

[0036] A collecting mechanism 6 is provided at the lower end of the guide mechanism 4, and the collecting mechanism 6 includes an inclined plate 61 fixedly installed at the lower end of the guide plate 41. The water droplets after being cooled adhere to the inclined plate 61, and a collecting box 63 is fixedly installed on the outer periphery of the lower end of the inclined plate 61. A water inlet 64 is opened at the upper end of the inner wall of the collecting box 63, and the water inlet 64 is connected to the top of the inclined plate 61. The height of the central part of the inclined plate 61 is higher than the height of the surrounding parts. The water droplets flow downward along the inclined plate 61 of the inclined structure, and finally enter the collecting box 63 through the water inlet 64 for collection.

[0037] The guide plate 41 and the water storage cylinder 42 move up and down in the steam pipe 11. When adjacent guide plates 41 approach each other, the steam between the two is compressed, and the steam flow rate in the guide tube 43 increases. The water storage cylinder 42 and the sponge pad 51 at the upper end of the lower guide plate 41 will squeeze the inclined plate 61 and the collecting box 63 in the upper guide plate 41. The condensed water on the inclined plate 61 is absorbed by the sponge pad 51. The collecting box 63 is made of a rubber structure and is flattened during the squeezing process. The water collected in the collecting box 63 can also be absorbed by the sponge pad 51, so that the collected water can be merged together. When the adjacent guide plates 41 move away from each other in an arc, the steam between the two diffuses, the steam flow rate in the guide tube 43 slows down, the collecting box 63 loses its restraint and rebounds to the annular structure, so that the condensed water can be collected again.

[0038] By providing the water storage cylinder 42 and the collection box 63, the excess cooling water can be collected for later recycling and reduction of water waste.

[0039] Example 4: Please refer to Figure 3-Figure 8 A squeezing rod 47 is fixedly installed on the upper end of the water storage cylinder 42, and a plurality of mounting holes 62 are opened circumferentially on the inclined plate 61. A connecting mechanism 7 is arranged inside the guide mechanism 4, and the connecting mechanism 7 includes a flow cylinder 71 fixedly installed inside the mounting hole 62. The flow cylinder 71 is adapted to the mounting hole 62, and an insertion port 72 is opened at the lower end of the flow cylinder 71. The squeezing rod 47 is arranged at the lower end of the insertion port 72, and the diameter of the squeezing rod 47 is smaller than the diameter of the insertion port 72.

[0040] An elastic member 73 is installed inside the circulation cylinder 71. The elastic member 73 is made of any elastic structure such as a spring, a bellows, etc. A blocking block 74 is fixedly installed on the upper end of the elastic member 73. The blocking block 74 is a spherical structure and is installed at the upper end of the circulation cylinder 71 to block the upper end of the circulation cylinder 71.

[0041] The guide plate 41 and the water storage cylinder 42 move up and down in the steam pipe 11. When the adjacent guide plates 41 approach each other, the squeezing rod 47 at the upper end of the water storage cylinder 42 is inserted into the plug-in port 72 of the circulation cylinder 71. The two guide plates 41 approach each other again, and the squeezing rod 47 is inserted into the circulation cylinder 71 and squeezes the blocking block 74 upward, so that the circulation cylinder 71 can circulate up and down. The two guide plates 41 approach each other again, and the inclined plate 61 is completely fitted with the water storage cylinder 42. The inclined plate 61 squeezes the sponge pad 51. The water collected in the sponge pad 51 has only one channel of the circulation cylinder 71. Therefore, the collected water will enter the interior of the guide plate 41, and the water inside the guide plate 41 can be absorbed by the second nozzle 44 and sprayed out again for secondary utilization.

[0042] When the adjacent guide disks 41 arc away from each other, the extrusion rod 47 is removed from the blocking block 74, and the blocking block 74 is reset under the action of the elastic member 73 to block the flow cylinder 71 again, so as to facilitate the reuse of the guide disk 41 and the second nozzle 44.

[0043] A connecting rod 75 is installed between the multiple circulation cylinders 71, and the multiple circulation cylinders 71 can move together, which increases the liquid recovery rate and ensures that the multiple blocking blocks 74 can be reset together for easy use.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water spray atomization temperature control device for a steam turbine in a coal-fired power plant, comprising a steam discharge mechanism (1), characterized in that: The steam discharge mechanism (1) comprises a steam pipe (11), the lower end of the steam pipe (11) is provided with an air inlet (12), and the upper end of the steam pipe (11) is connected to a steam outlet (13); A cooling mechanism (2) is provided at the upper end of the steam discharge mechanism (1), the cooling mechanism (2) comprising a water chiller (21) installed at the upper end of the steam pipe (11), a spray pipe (22) is provided at the lower end of the water chiller (21), and a first spray head (23) is provided at the lower end of the spray pipe (22); A circulation mechanism (3) is provided inside the steam discharge mechanism (1), the circulation mechanism (3) comprising a motor (31) mounted on the upper end of the chiller (21), a cold water pipe (32) being provided at the output end of the motor (31), and a circulation hole (36) being provided on the cold water pipe (32); A plurality of guide mechanisms (4) are further arranged inside the steam discharge mechanism (1), the guide mechanism (4) comprising a guide plate (41) arranged inside the steam pipe (11), a guide tube (43) being arranged on the guide plate (41), the upper and lower guide tubes (43) being located in opposite positions, and a second nozzle (44) being provided on the side wall of the guide tube (43).

2. The water spray atomization temperature control device for a steam turbine in a coal-fired power plant according to claim 1, characterized in that: A drainage hole (14) is provided at the lower end of the steam pipe (11), and a sliding groove (15) is provided on the side wall of the steam pipe (11).

3. The water spray atomization temperature control device for a steam turbine in a coal-fired power plant according to claim 2, characterized in that: A stirring rod (33) is fixedly mounted on the outer periphery of the cold water pipe (32), and the stirring rod (33) is rotatably mounted inside the chiller (21). A plurality of limit blocks (34) are arranged on the outer periphery of the lower end of the cold water pipe (32), and a bidirectional spiral groove (35) is provided between two adjacent limit blocks (34).

4. The water spray atomization temperature control device for a steam turbine in a coal-fired power plant according to claim 3, characterized in that: The guide plate (41) is slidably mounted in the adjacent limit block (34); a first sliding block (45) is provided on the outer periphery of the guide plate (41); the first sliding block (45) is slidably mounted in the sliding groove (15); a second sliding block (46) is fixedly mounted in the middle of the guide plate (41); the second sliding block (46) is slidably mounted in the bidirectional spiral groove (35).

5. The water spray atomization temperature control device for a steam turbine in a coal-fired power plant according to claim 1, characterized in that: A water storage cylinder (42) is provided at the upper end of the guide plate (41), and a squeezing rod (47) is fixedly mounted at the upper end of the water storage cylinder (42).

6. The water spray atomization temperature control device for a steam turbine in a coal-fired power plant according to claim 5, characterized in that: A storage mechanism (5) is provided at the upper end of the guide mechanism (4), the storage mechanism (5) comprising a sponge pad (51) arranged in the water storage cylinder (42), an avoidance hole (52) being provided on the sponge pad (51), and the guide tube (43) is located in the avoidance hole (52).

7. The water spray atomization temperature regulating device for a steam turbine in a coal-fired power plant according to claim 5, characterized in that: A collecting mechanism (6) is provided at the lower end of the guide mechanism (4), and the collecting mechanism (6) comprises an inclined plate (61) fixedly mounted on the lower end of the guide plate (41), the height of the central portion of the inclined plate (61) being higher than the height of the surrounding portions, and a plurality of mounting holes (62) are circumferentially formed on the inclined plate (61).

8. The water spray atomization temperature regulating device for a steam turbine in a coal-fired power plant according to claim 7, characterized in that: A collecting box (63) is fixedly mounted on the outer periphery of the lower end of the inclined plate (61); the collecting box (63) is made of a rubber structure; a water inlet (64) is provided at the upper end of the inner wall of the collecting box (63); the water inlet (64) is connected to the top of the inclined plate (61).

9. The water spray atomization temperature regulating device for a steam turbine in a coal-fired power plant according to claim 7, characterized in that: A connecting mechanism (7) is arranged inside the guide mechanism (4), and the connecting mechanism (7) comprises a circulation cylinder (71) fixedly mounted inside the mounting hole (62), the circulation cylinder (71) being adapted to the mounting hole (62), a plug-in interface (72) being provided at the lower end of the circulation cylinder (71), and the extrusion rod (47) being arranged at the lower end of the plug-in interface (72).

10. The water spray atomization temperature regulating device for a steam turbine in a coal-fired power plant according to claim 9, characterized in that: An elastic member (73) is installed inside the circulation cylinder (71), a blocking block (74) is fixedly installed on the upper end of the elastic member (73), and the blocking block (74) is snap-fitted to the upper end of the circulation cylinder (71), and a connecting rod (75) is commonly installed between a plurality of the circulation cylinders (71).

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