A boiler water supply cooling device for thermal power plants

Abstract

The present invention relates to the technical field of boiler water supply cooling, and discloses a boiler water supply cooling device for a thermal power plant, comprising a support frame, the support frame is arranged in an L shape, a flow cooling box is fixedly arranged on the upper end of the inner wall of the support frame, a cooling cylinder is fixedly penetrated on the upper end of the inner wall of the flow cooling box, a water cooling box is fixedly arranged on the top of the cooling cylinder, a water inlet pipe is connected between the upper end and the bottom of the side wall of the water cooling box, the water inlet pipe is arranged in a serpentine shape, a water cooling assembly is arranged inside the water cooling box, a water outlet pipe is connected to the lower end of the side wall of the flow cooling box, a water trough is fixedly arranged on the bottom end of the support frame, a drain pipe is connected to the lower end of the side wall of the water trough, a support plate is fixedly arranged on the back side of the water trough, and a cross bar is rotatably penetrated inside the support plate. The boiler water supply cooling device for a thermal power plant can quickly cool the boiler water supply through the contact between the cooling plate and the water flow, and at the same time, the water supply is pre-heated and cooled by convection with cold water before that.

Description

Technical Field

[0001] The invention relates to the technical field of boiler water supply cooling, in particular to boiler water supply cooling equipment for thermal power plants. Background Art

[0002] A power station boiler, also known as a "power plant boiler", refers to a medium-to-large boiler in a power plant that provides a specified quantity and quality of steam to the steam turbine. It heats water into steam to drive the steam turbine to generate electricity, and the boiler water needs to be cooled before being discharged.

[0003] After searching, Chinese patent CN216245675U discloses a boiler water supply cooling device for thermal power plants. By setting a water retaining plate, a heat-conducting metal ring and heat-dissipating fins, and coordinating with the set honeycomb tube, DC fan and circulating fan, when hot water flows into the cooling tank through the conduit, the water column can be diffused through the water retaining plate first to dissipate the heat in the water, and the diffused water flow can be sprayed on the heat-conducting metal ring, and heat transfer is achieved through the heat-conducting metal ring, and can be dissipated to the outside through the heat-dissipating fins. At the same time, the circulating fan can make the air flow quickly circulate on the surface of the heat-dissipating fins, continuously circulate, form fresh air, and achieve the purpose of rapid heat dissipation.

[0004] The above technical solution has certain defects:

[0005] First, the boiler water is initially filtered by dispersing the water flow and continuously in contact with the heat-conducting metal ring to dissipate heat. If the water volume is large, the metal ring is in continuous contact with the hot water, which will reduce its heat conduction effect.

[0006] Secondly, the overall cooling effect on boiler water is poor only through the combination of air cooling and metal sheets. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a boiler water supply cooling device for a thermal power plant, which has the advantage of being able to quickly cool the boiler water supply through the contact between the refrigeration plate and the water flow, and at the same time, pre-cooling the water supply through heat exchange and convection with cold water, thereby solving the problems of poor heat conduction effect caused by long-term operation of metal rings for heat conduction and poor cooling effect of cooling the water flow with air cooling.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a boiler water supply cooling device for a thermal power plant, comprising a support frame, the support frame is arranged in an L shape, a flow cooling box is fixedly provided at the upper end of the inner wall of the support frame, a cooling cylinder is fixedly penetrated at the upper end of the inner wall of the flow cooling box, a water cooling box is fixedly provided on the top of the cooling cylinder, a water inlet pipe is connected between the upper end and the bottom of the side wall of the water cooling box, the water inlet pipe is arranged in a serpentine shape, and a water cooling assembly is provided inside the water cooling box;

[0009] The lower end of the side wall of the flow cooling box is connected with a water outlet pipe, the bottom end of the support frame is fixed with a water tank, the lower end of the side wall of the water tank is connected with a drain pipe, the back side of the water tank is fixed with a support plate, the inside of the support plate is rotatably penetrated with a cross bar, the rod wall of the cross bar is fixed with a connecting ring, and the outer side of the connecting ring is fixed with a plurality of metal plates arranged symmetrically around;

[0010] The water cooling assembly includes a water cooling pipe, which is fixedly sleeved on the outside of the water inlet pipe and arranged in a serpentine shape. A water pump is connected between the water cooling pipe and the water tank. A water pump is fixedly sleeved on the pipe wall of the water pump. The water pump is fixedly connected to the water cooling box. A water supply pipe is connected between the lower end of the water cooling pipe and the inner wall of the water tank.

[0011] A cooling assembly is provided in the cooling cylinder;

[0012] A fluid heat conduction component is arranged inside the fluid cooling box.

[0013] Preferably, the cooling assembly includes a plurality of refrigeration fins arranged in a symmetrical manner, an annular groove is provided on the outer side of the cooling cylinder, a plurality of aluminum plates arranged in a symmetrical manner are fixedly embedded in the inner wall of the annular groove, the refrigeration fins are located in the annular groove and fixedly connected to the aluminum plates, and a diversion pipe is provided at the bottom of the water inlet pipe that passes through the cooling cylinder and rotates.

[0014] Preferably, the shunt pipe is bent, a worm wheel is fixedly sleeved on the upper end of the shunt pipe, a worm is meshed on the back side of the worm wheel, the worm is rotatably connected to the inner wall of the cooling cylinder, and the bare rod end of the worm passes through the cooling cylinder and extends to the outside.

[0015] Preferably, the flow heat conduction component includes a plurality of heat conduction plates, and the plurality of heat conduction plates are staggeredly arranged inside the flow cooling box. The plurality of heat conduction plates are all arranged obliquely, and an inclined surface is provided at the bottom of the inner wall of the flow cooling box, and the end of the inclined surface is connected to the water outlet pipe.

[0016] Preferably, a horizontal plate is fixedly provided on the side of the outer wall of the flow cooling box away from the water pump, a vertical rod is rotatably passed through the inside of the horizontal plate, a first bevel gear is fixedly provided at both ends of the vertical rod, a second bevel gear and a third bevel gear are respectively fixedly provided at the adjacent ends of the horizontal rod and the worm gear, and the two first bevel gears are respectively meshed with the second bevel gear and the third bevel gear.

[0017] Preferably, the water outlet pipe is located directly above the metal plate.

[0018] Preferably, the end of the water inlet pipe and the outer upper end of the diversion pipe are rotatably connected via a sealed bearing.

[0019] Compared with the prior art, the present invention provides a boiler water supply cooling device for a thermal power plant, which has the following

[0020] Beneficial effects:

[0021] 1. The boiler water supply cooling equipment for thermal power plants can pre-cool the boiler water supply by water cooling, heat exchange and cooling, through the water cooling box, water inlet pipe, water cooling pipe, water tank, drain pipe and water cooling components, thereby improving the cooling effect of the boiler water supply.

[0022] 2. The boiler water supply cooling equipment for thermal power plants, through the supporting plates, cross bars, connecting rings, metal plates, cooling cylinders, shunt pipes, cooling components, vertical bars, first bevel gears, second bevel gears and third bevel gears, can quickly cool down the water supply through the rapid cooling of the refrigeration plates and the flow contact of the boiler water supply, thereby effectively improving the cooling effect of the water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a boiler water supply cooling device for a thermal power plant proposed by the present invention;

[0024] Figure 2 for Figure 1 The structure enlarged diagram of the local A part;

[0025] Figure 3 for Figure 1 A magnified view of the structure of part B in the middle.

[0026] Description of reference numerals:

[0027] 1 support frame, 2 flow cooling box, 3 cooling cylinder, 4 water cooling box, 5 water inlet pipe, 6 water outlet pipe, 7 water tank, 8 drain pipe, 9 cross bar, 10 connecting ring, 11 metal plate, 12 water cooling pipe, 13 water pumping pipe, 14 water pump, 15 water supply pipe, 16 refrigeration plate, 17 aluminum plate, 18 diversion pipe, 19 worm gear, 20 worm, 21 heat conduction plate, 22 cross plate, 23 vertical rod, 24 first bevel gear, 25 second bevel gear, 26 third bevel gear, 27 support plate. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-3A boiler water supply cooling device for a thermal power plant includes a support frame 1, which is arranged in an L shape. A flow cooling box 2 is fixedly arranged on the upper end of the inner wall of the support frame 1. A cooling cylinder 3 is fixedly penetrated through the upper end of the inner wall of the flow cooling box 2. A water cooling box 4 is fixedly arranged on the top of the cooling cylinder 3. The cooling flow box 2, the cooling cylinder 3 and the water cooling box 4 are supported by the support frame 1.

[0030] A water inlet pipe 5 is provided between the upper end of the side wall and the bottom of the water cooling box 4. The water inlet pipe 5 is arranged in a serpentine shape, which can delay the time for the water supply to enter the water cooling box 4, thereby improving the effect of the subsequent water cooling of the water supply. A water cooling component is provided inside the water cooling box 4.

[0031] The water cooling assembly includes a water cooling pipe 12, which is fixedly sleeved on the outside of the water inlet pipe 5 and is arranged in a serpentine shape. A water pumping pipe 13 is provided between the water cooling pipe 12 and the water tank 7. A water pump 14 is fixedly sleeved on the pipe wall of the water pumping pipe 13. The water pump 14 is fixedly connected to the water cooling box 4. A water supply pipe 15 is provided between the lower end of the water cooling pipe 12 and the inner wall of the water tank 7. Cooling water can be added to the water tank 7, and the cooling water is pumped by the water pump 14, so that the cooling water continues to flow between the water pumping pipe 13, the water cooling pipe 12, the water supply pipe 15 and the water tank 7, so as to perform preliminary water cooling on the water supply.

[0032] A water outlet pipe 6 is connected to the lower end of the side wall of the flow cooling box 2, a water trough 7 is fixedly provided at the bottom end of the support frame 1, a drain pipe 8 is connected to the lower end of the side wall of the water trough 7, a support plate 27 is fixedly provided on the back side of the water trough 7, a cross bar 9 is rotatably passed through the inside of the support plate 27, a connecting ring 10 is fixedly provided on the rod wall of the cross bar 9, and a plurality of metal plates 11 symmetrically arranged in a surrounding manner are fixedly provided on the outer side of the connecting ring 10, the water outlet pipe 6 is located directly above the metal plate 11, and the water flows out through the water outlet pipe 6 after being cooled and acts on the metal plate 11, so that the plurality of metal plates 11 can drive the connecting ring 10 and the cross bar 9 to rotate.

[0033] A cooling assembly is provided in the cooling cylinder 3, and the cooling assembly includes a plurality of refrigeration fins 16 which are symmetrically arranged in a ring shape. An annular groove is provided on the outer side of the cooling cylinder 3, and a plurality of aluminum plates 17 which are symmetrically arranged in a ring shape are fixedly embedded on the inner wall of the annular groove. The refrigeration fins 16 are located in the annular groove and are fixedly connected to the aluminum plates 17. The bottom of the water inlet pipe 5 passes through the cooling cylinder 3 and is rotatably provided with a shunt pipe 18. The end of the water inlet pipe 5 and the outer upper end of the shunt pipe 18 are rotatably connected through a sealed bearing. The refrigeration fins 16 use semiconductor refrigeration fins, which can perform rapid refrigeration work and transfer the low temperature to the aluminum plate 17 for contact cooling and cooling with the water supply.

[0034] A flow heat conduction component is provided inside the flow cooling box 2, and the flow heat conduction component includes multiple heat conduction plates 21. The multiple heat conduction plates 21 are staggered inside the flow cooling box 2, and the multiple heat conduction plates 21 are all arranged obliquely. An inclined surface is provided at the bottom of the inner wall of the flow cooling box 2, and the end of the inclined surface is connected to the water outlet pipe 6. The water supply flows slowly on the multiple heat conduction plates 21 to complete the final heat conduction cooling.

[0035] The shunt pipe 18 is bent, and a worm wheel 19 is fixedly sleeved on the upper end of the shunt pipe 18. A worm 20 is meshed on the back side of the worm wheel 19. The worm 20 is rotatably connected to the inner wall of the cooling cylinder 3, and the bare rod end of the worm 20 passes through the cooling cylinder 3 and extends to the outside.

[0036] A horizontal plate 22 is fixedly provided on the side of the outer wall of the flow cooling box 2 away from the water pump 14, and a vertical rod 23 is rotatably penetrated inside the horizontal plate 22. Both ends of the vertical rod 23 are fixedly provided with a first bevel gear 24, and the adjacent ends of the horizontal rod 9 and the worm 20 are respectively fixedly provided with a second bevel gear 25 and a third bevel gear 26. The two first bevel gears 24 are respectively meshed with the second bevel gear 25 and the third bevel gear 26. By rotating a plurality of metal plates 11, the horizontal rod 9 rotates and the worm 20 can be driven to rotate through the transmission between the plurality of bevel gears, thereby driving the worm wheel 19 and the diverter pipe 18 to rotate continuously, so that the water supply can contact various parts of the inner wall of the cooling cylinder 3, thereby improving the adequacy of the water supply cooling.

[0037] In summary, when the boiler water supply cooling equipment for the thermal power plant is used, a certain amount of cooling water is first added to the water tank, and the water pump 14 is started, so that the water pump 14 extracts the cooling water through the water pumping pipe 13 and the water delivery pipe 15 and continuously flows in the water cooling pipe 12, and multiple refrigeration plates 15 are energized, so that the refrigeration plates 15 quickly cool down and transport the low temperature to the inside of the cooling cylinder 3 through the aluminum plate 17, and then the boiler water supply is introduced through the water inlet of the water inlet pipe 5. When the water supply flows in the water inlet pipe 5, it contacts with the cooling water for preliminary cooling. The cooling water after preliminary cooling is transported to the inner wall of the cooling cylinder 3 through the shunt pipe 18 and contacts with the low-temperature aluminum plate 17, and the water supply is rapidly cooled for a second time. Cooling, the cooled cooling water finally enters the flow cooling box 2, and is finally cooled by contacting the offset heat conduction plate 21, and the cooled water supply falls through the outlet pipe 6 and pushes the multiple metal plates 11 and falls into the water tank 7 for collection. The multiple metal plates 11 drive the connecting ring 10 and the cross bar 9 to rotate during the pushing process, and the cross bar 9, the vertical rod 23 and the worm 20 are engaged through the first bevel gear 24, the second bevel gear 25 and the third bevel gear 26, so that the cross bar 9, the vertical rod 23 and the worm 20 rotate synchronously, so that the worm gear 19 drives the diverter pipe 18 to rotate continuously, so that the water supply after preliminary cooling can contact and cool various parts of the inner wall of the cooling cylinder 3 to improve the cooling effect.

[0038] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler water supply cooling device for a thermal power plant, characterized in that: The invention comprises a support frame (1), wherein the support frame (1) is arranged in an L shape, a flow cooling box (2) is fixedly provided at the upper end of the inner wall of the support frame (1), a cooling cylinder (3) is fixedly penetrated through the upper end of the inner wall of the flow cooling box (2), a water cooling box (4) is fixedly provided on the top of the cooling cylinder (3), a water inlet pipe (5) is connected between the upper end and the bottom of the side wall of the water cooling box (4), the water inlet pipe (5) is arranged in a serpentine shape, and a water cooling component is provided inside the water cooling box (4); The lower end of the side wall of the flow cooling box (2) is connected to a water outlet pipe (6), the bottom end of the support frame (1) is fixedly provided with a water tank (7), the lower end of the side wall of the water tank (7) is connected to a drain pipe (8), a support plate (27) is fixedly provided on the back side of the water tank (7), a cross bar (9) is rotatably penetrated inside the support plate (27), a connecting ring (10) is fixedly sleeved on the rod wall of the cross bar (9), and a plurality of metal plates (11) arranged symmetrically around the outside of the connecting ring (10) are fixedly provided; The water cooling assembly comprises a water cooling pipe (12), the water cooling pipe (12) is fixedly sleeved on the outside of the water inlet pipe (5) and is arranged in a serpentine shape, a water pumping pipe (13) is provided between the water cooling pipe (12) and the water tank (7), a water pump (14) is fixedly sleeved on the pipe wall of the water pumping pipe (13), the water pump (14) is fixedly connected to the water cooling box (4), and a water supply pipe (15) is provided between the lower end of the water cooling pipe (12) and the inner wall of the water tank (7); The cooling cylinder (3) is provided with a cooling component; The fluid cooling box (2) is provided with a fluid heat conduction component inside; The cooling assembly comprises a plurality of refrigeration fins (16) arranged in a symmetrical manner, an annular groove is provided on the outer side of the cooling cylinder (3), a plurality of aluminum plates (17) arranged in a symmetrical manner are fixedly embedded in the inner wall of the annular groove, the refrigeration fins (16) are located in the annular groove and are fixedly connected to the aluminum plates (17), and a shunt pipe (18) is rotatably provided at the bottom of the water inlet pipe (5) which penetrates into the cooling cylinder (3); The shunt pipe (18) is arranged in a bent state; A worm wheel (19) is fixedly sleeved on the upper end of the shunt pipe (18), a worm (20) is meshedly provided on the back side of the worm wheel (19), the worm (20) is rotatably connected to the inner wall of the cooling cylinder (3), and the bare end of the worm (20) passes through the cooling cylinder (3) and extends to the outside; The flow heat conduction component comprises a plurality of heat conduction plates (21), and the plurality of heat conduction plates (21) are staggeredly arranged inside the flow cooling box (2); A horizontal plate (22) is fixedly provided on the side of the outer wall of the flow cooling box (2) away from the water pump (14), a vertical rod (23) is rotatably penetrated inside the horizontal plate (22), first bevel gears (24) are fixedly provided at both ends of the vertical rod (23), a second bevel gear (25) and a third bevel gear (26) are fixedly provided at the adjacent ends of the horizontal rod (9) and the worm (20), and the two first bevel gears (24) are respectively meshed with the second bevel gear (25) and the third bevel gear (26); The end of the water inlet pipe (5) and the outer upper end of the diversion pipe (18) are rotatably connected via a sealed bearing.

2. The boiler water supply cooling equipment for thermal power plants according to claim 1, characterized in that: The plurality of heat conducting plates (21) are all arranged obliquely.

3. The boiler water supply cooling equipment for thermal power plants according to claim 1, characterized in that: The bottom of the inner wall of the flow cooling box (2) is provided with an inclined surface, and the end of the inclined surface is connected to the water outlet pipe (6).

4. The boiler water supply cooling equipment for thermal power plants according to claim 1, characterized in that: The water outlet pipe (6) is located directly above the metal plate (11).

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