Circulating water cooling system of power plant cooling tower

Abstract

The utility model provides a circulating water cooling system of a power plant cooling tower, which relates to the field of circulating water cooling, and comprises a cooling tower, a water spraying unit, a filler and a cooling water pond, the water spraying unit is fixedly arranged in the cooling tower, and the cooling water pond is arranged at the bottom end of the cooling tower. The filler is located between the water spraying unit and the cooling water pond, a water taking pipe is pre-buried in the side wall of the cooling water pond, and an elbow extending upwards is fixedly installed at the end, located in the cooling water pond, of the water taking pipe. According to the circulating water cooling system of the power plant cooling tower, the water taking pipe of the cooling water pool is changed from the bottom end to the middle of the liquid level, the sliding sleeve and the floating ring are arranged, and the water inlet is formed in the position, below the floating ring, of the surface of the sliding sleeve, so that the water inlet is always away from the bottom end of the cooling water pool during water taking; precipitated impurities are prevented from being taken out in the water taking process, and the pressure for filtering the impurities in the follow-up circulating water is reduced.

Description

Technical Field

[0001] This utility model relates to the field of circulating water cooling technology, specifically a circulating water cooling system for a power plant cooling tower. Background Technology

[0002] Cooling towers are key equipment in power plant circulating water systems, primarily used to lower the temperature of hot water or steam generated during power generation. Hot water is sprayed onto the packing material, forming fine droplets or a water film that makes full contact with the air. Some of the water evaporates into steam, absorbing heat during evaporation and thus lowering the temperature of the remaining water. The unevaporated water flows downwards under gravity, exchanging heat with the upward-flowing air. The airflow carries away the heat from the water, further reducing its temperature.

[0003] Existing patent CN219223393U describes a power plant cooling tower. The cooling tower includes a hollow cooling tower body and a water pumping pipeline. Inside the cooling tower body, from top to bottom, are a steam condensation recovery device, a water spray device, a packing layer, and a cold water pool. The steam condensation recovery device includes a support plate; a condensation component is provided on the support plate; a first guide channel is provided on the second side of the support plate, and a second guide channel is provided at the second end of the support plate. A water collection component is located below the intersection of the first and second guide channels. When a portion of the high-temperature mist comes into contact with the condensation component on the steam condensation recovery device, the high-temperature mist condenses into liquid water. The liquid water then flows along the inclined direction of the support plate to the first or second guide channel, and is collected by the water collection component. This process cools a portion of the high-temperature mist, turning it into condensate, which can then be collected and reused, reducing resource waste. The cooling water tank collects the cooling liquid and is an open environment. Impurities accumulated in the environment will settle inside the condensate tank. At the same time, water is drawn directly from the bottom, which will remove some of the sediment, increasing the working pressure of the subsequent filtration unit. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a circulating water cooling system for power plant cooling towers, which solves the problem mentioned in the background art of easily introducing sedimentary impurities during the water circulation process of existing cooling towers.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circulating water cooling system for a power plant cooling tower, comprising a cooling tower, a spray unit, packing material, and a cooling water pool. The spray unit is fixedly installed inside the cooling tower, and the cooling water pool is located at the bottom of the cooling tower. The packing material is located between the spray unit and the cooling water pool. A water intake pipe is pre-embedded in the side wall of the cooling water pool. An upwardly extending bend is fixedly installed at one end of the water intake pipe inside the cooling water pool. A sliding sleeve with its opening underwater is slidably connected to the outer surface of the bend. The inner bottom wall of the cooling water pool is inclined. A drain pipe is pre-embedded on the side of the lowest point of the inclination, and an inlet pipe is pre-embedded on the side of the highest point of the inclination. The bottom ends of both the drain pipe and the inlet pipe are flush with the inner bottom wall of the cooling water pool. Both the inlet pipe and the drain pipe are equipped with an openable sealing mechanism at their outer ends.

[0007] Furthermore, a water tank is provided on one side of the cooling water pool to temporarily store the cooling water drawn out by the water intake pipe, and a water intake pump connected to the water inlet pipe is provided on one side of the water tank.

[0008] Furthermore, the sliding sleeve includes a sliding sleeve sleeved on the outer surface of the bend, a limiting ring is fixedly installed inside the upper part of the sliding sleeve, a set of water inlets are opened on the outer surface of the sliding sleeve above the limiting ring, and a float ring is fixedly installed at the top of the sliding sleeve.

[0009] Furthermore, the outer surface of the bend is provided with a set of annularly distributed limiting grooves, and a roller is rolled inside the limiting groove. The fixed end of the roller is fixedly connected to the sliding sleeve, and a baffle wrapped around the limiting groove and the outer surface of the bend is fixedly installed at the bottom end of the sliding sleeve.

[0010] Furthermore, the sealing mechanism includes a cavity connected to an inlet pipe or a drain pipe, and the cavity is provided with a sealing plug that can cut off the pipeline by movement.

[0011] Furthermore, a rotating ring is rotatably connected to the upper end face of the sealing plug, and a threaded shaft is fixedly installed on the upper surface of the rotating ring. The threaded shaft passes through the cavity and is threadedly connected to the cavity.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The circulating water cooling system of the power plant's cooling tower is designed to move the water intake pipe of the cooling water tank from the bottom to the middle of the liquid level. By installing a sliding sleeve and a float ring, and opening a water inlet below the float ring on the surface of the sliding sleeve, the water inlet is always kept away from the bottom of the cooling water tank when taking water. This avoids removing all the sedimented impurities during the water intake process and reduces the pressure on the subsequent impurity filtration in the circulating water.

[0014] 2. The circulating water cooling system of the power plant's cooling tower is designed with an inclined inner bottom wall of the cooling water pool and an openable drain pipe at the lowest point of the inclination. When the drain pipe is opened, an inlet pipe is installed at the highest point of the inclination. The inlet pipe can use a water pump to draw water from the water tank to flush the cooling water pool, accelerate the discharge of sediment, and thus clean the cooling water pool. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bend connection of this utility model;

[0017] Figure 3 This is a half-sectional schematic diagram of the sliding sleeve of this utility model;

[0018] Figure 4 This is a half-sectional schematic diagram of the cooling water tank of this utility model;

[0019] Figure 5 This is a schematic diagram of the sealing mechanism of this utility model.

[0020] The components include: 1. Cooling tower; 2. Spray unit; 3. Packing material; 4. Cooling water pool; 5. Water intake pipe; 6. Bend; 7. Sliding sleeve; 8. Sewage pipe; 9. Water inlet pipe; 10. Sealing mechanism; 11. Water tank; 12. Water intake pump; 701. Sliding sleeve; 702. Limiting ring; 703. Water inlet; 704. Floating ring; 705. Limiting groove; 706. Roller; 707. Baffle; 101. Cavity; 102. Sealing plug; 103. Rotating ring; 104. Threaded shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-5A circulating water cooling system for a power plant cooling tower includes a cooling tower 1, a spray unit 2, a packing 3, and a cooling water pool 4. The spray unit 2 is fixedly installed inside the cooling tower 1. The cooling water pool 4 is located at the bottom of the cooling tower 1. The packing 3 is located between the spray unit 2 and the cooling water pool 4. A water intake pipe 5 is pre-embedded in the side wall of the cooling water pool 4. An upwardly extending bend 6 is fixedly installed at one end of the water intake pipe 5 inside the cooling water pool 4. A sliding sleeve 7 floating in the water with its opening underwater is slidably connected to the outer surface of the bend 6. The inner bottom wall of the cooling water pool 4 is inclined. A drain pipe 8 is pre-embedded on the side of the lowest point of the inclination of the cooling water pool 4. An inlet pipe 9 is pre-embedded on the side of the highest point of the inclination of the cooling water pool 4. The bottom ends of both the drain pipe 8 and the inlet pipe 9 are flush with the inner bottom wall of the cooling water pool 4. An openable sealing mechanism 10 is provided at the outer end of both the inlet pipe 9 and the drain pipe 8.

[0023] A water tank 11 for temporarily storing cooling water is provided on one side of the cooling water pool 4. A water pump 12 connected to the water inlet pipe 9 is provided on one side of the water tank 11. This arrangement can temporarily store some cooling water for backflushing the cooling water pool 4 and also play a role in sedimentation.

[0024] The sliding sleeve 7 includes a sliding sleeve 701 that is sleeved on the outer surface of the bend 6. A limiting ring 702 is fixedly installed inside the upper part of the sliding sleeve 701. A set of water inlets 703 are opened on the outer surface of the sliding sleeve 701 above the limiting ring 702. A float ring 704 is fixedly installed on the top of the sliding sleeve 701. This arrangement allows the water inlets 703 to always be below the liquid level and to move with the liquid level.

[0025] The outer surface of the bend 6 is provided with a set of annularly distributed limiting grooves 705. Rollers 706 are rolled inside the limiting grooves 705. The fixed end of the rollers 706 is fixedly connected to the sliding sleeve 7. The bottom end of the sliding sleeve 7 is fixedly installed with a baffle 707 that wraps around the limiting grooves 705 and the outer surface of the bend 6. This arrangement can reduce the contact area between the bend 6 and the sliding sleeve 7, thereby making it easier for the sliding sleeve 7 to slide.

[0026] The sealing mechanism 10 includes a cavity 101 that communicates with the water inlet pipe 9 or the drain pipe 8. The cavity 101 is provided with a sealing plug 102 that can cut off the pipeline by moving it. This arrangement allows the drain pipe 8 and the water inlet pipe 9 to be opened so that the cooling water pool 4 can be flushed.

[0027] A rotating ring 103 is rotatably connected to the upper end face of the sealing plug 102. A threaded shaft 104 is fixedly installed on the upper surface of the rotating ring 103. The threaded shaft 104 passes through the cavity 101 and is threadedly connected to the cavity 101. This arrangement allows for convenient adjustment of the position of the sealing plug 102.

[0028] In use, the water intake pipe 5 of the cooling water tank 4 is moved from the bottom to the middle of the liquid level. By setting up a sliding sleeve 701 and a float ring 704, and opening a water inlet 703 below the float ring 704 on the surface of the sliding sleeve 701, the water inlet 703 can always be kept away from the bottom of the cooling water tank 4 when taking water, so as to avoid taking out the sedimented impurities along with the water during the water intake process, and reduce the pressure of impurity filtration in the subsequent circulating water.

[0029] By setting the inner bottom wall of the cooling water pool 4 to be inclined, and setting an openable drain pipe 8 at the lowest point of the inclination, when the drain pipe 8 is opened, the sediment can be discharged from the drain pipe 8. By setting an inlet pipe 9 at the highest point of the inclination, the inlet pipe 9 can use the water pump 12 to draw water from the water tank 11 to flush the cooling water pool 4, accelerate the discharge of sediment, and thus clean the cooling water pool 4.

[0030] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A circulating water cooling system of a cooling tower of a power plant, comprising a cooling tower (1), a water spraying unit (2), a filler (3) and a cooling water pool (4), the water spraying unit (2) being fixedly installed inside the cooling tower (1), the cooling water pool (4) being arranged at the bottom end of the cooling tower (1), and the filler (3) being located between the water spraying unit (2) and the cooling water pool (4), characterized in that: The side wall of the cooling pool (4) is embedded with a water taking pipe (5), one end of which is fixedly installed with an upward extending elbow (6) in the cooling pool (4), the outer surface of the elbow (6) is slidably connected with a sliding sleeve (7) floating on water and having an opening located underwater; The inner bottom wall of the cooling pool (4) is provided with an inclination angle, the cooling pool (4) is embedded with a sewage pipe (8) at the side of the lowest inclination point, and is embedded with a water inlet pipe (9) at the side of the highest inclination point, the bottom ends of the sewage pipe (8) and the water inlet pipe (9) are flush with the inner bottom wall of the cooling pool (4), and the water inlet pipe (9) and the sewage pipe (8) are provided with openable sealing mechanisms (10) at one end outside the cooling pool (4).

2. A recirculating water cooling system for a power plant cooling tower according to claim 1, wherein: The cooling pool (4) is provided with a water tank (11) for temporarily storing the cooling water taken out by the water taking pipe (5) on one side, and is provided with a water taking pump (12) communicating with the water inlet pipe (9) on one side of the water tank (11).

3. A recirculating water cooling system for a power plant cooling tower according to claim 1, wherein: The sliding sleeve (7) comprises a sliding sleeve (701) sleeved on the outer surface of the elbow (6), a limiting ring (702) is fixedly installed on the inside of the sliding sleeve (701), a plurality of water inlet openings (703) are formed on the outer surface of the sliding sleeve (701) above the limiting ring (702), and a floating ring (704) is fixedly installed on the top end of the sliding sleeve (701).

4. A recirculating water cooling system for a cooling tower of a power plant according to claim 2 or 3, characterized in that: The outer surface of the elbow (6) is provided with a plurality of annular limiting grooves (705), the limiting grooves (705) are rollingly connected with rollers (706), the fixed end of the roller (706) is fixedly connected with the sliding sleeve (7), and the bottom end of the sliding sleeve (7) is fixedly installed with a baffle (707) wrapped around the limiting grooves (705) and the outer surface of the elbow (6).

5. A recirculating water cooling system for a power plant cooling tower according to claim 4 wherein: The sealing mechanism (10) comprises a cavity (101) communicating with the water inlet pipe (9) or the sewage pipe (8), and the cavity (101) is provided with a sealing plug (102) for cutting off the pipeline by moving.

6. A recirculating water cooling system for a power plant cooling tower according to claim 5 wherein: The upper end surface of the sealing plug (102) is rotatably connected with a rotating ring (103), the upper surface of the rotating ring (103) is fixedly installed with a threaded shaft (104), and the threaded shaft (104) penetrates through the cavity (101) and is threadedly connected with the cavity (101).

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