A natural draft hybrid wet-dry cooling tower

Abstract

The present application relates to the field of cooling tower, especially to a natural ventilation dry-wet combined cooling tower, which can combine dry cooling and wet cooling, save water and further accelerate the cooling speed. The natural ventilation dry-wet combined cooling tower comprises a water tank and a water outlet pipe, wherein the water tank is fixedly connected with the water outlet pipe. The spray rotating pipe can uniformly spray the cooled water. Since there is a temperature difference between water and air, the air can take away part of the heat of the water, so that the water can be wet-cooled. Meanwhile, another part of the cooled water flows to the water outlet pipe to be discharged. In the process of water flowing, the air in the water tank can take away the heat of the cooled water, so that the water can be dry-cooled. Therefore, the water can be cooled by dry-wet combination, so that the water can be saved and the cooling speed can be accelerated.

Description

Technical Field

[0001] This invention relates to the field of cooling towers, and more particularly to a natural ventilation combined dry and wet cooling tower. Background Technology

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from inside the tower and release it into the atmosphere in order to lower the water temperature. Cooling towers mainly utilize the contact between water and air to exchange heat and generate steam. The steam evaporates and carries away the heat, thereby achieving the effect of cooling and heat dissipation.

[0003] Current equipment is mainly divided into wet cooling towers and dry cooling towers. Wet cooling towers spray water onto the packing material, and then the temperature difference between the water and the air causes the air to carry away some of the heat from the water, thus cooling the water. However, the water consumption is relatively large. Dry cooling is not effective in hot weather because the natural wind is not strong and the temperature is not low enough, which makes it unsuitable for use. Summary of the Invention

[0004] To overcome existing deficiencies, this invention provides a natural ventilation combined dry and wet cooling tower that can combine dry and wet cooling, saving water while further accelerating the cooling rate.

[0005] The technical implementation scheme of the present invention is as follows:

[0006] A naturally ventilated combined wet and dry cooling tower includes a water tank, an outlet pipe, an inlet pipe, a pipe rack, hollow support pipes, a shell, a support frame, and a cooling mechanism. The water tank is fixedly connected to the outlet pipe, and an outlet is opened at the bottom of the water tank. The water tank is connected to the outlet pipe. The water tank is fixedly connected to the inlet pipe, and a pipe rack is fixedly connected to the upper part of the inlet pipe. Four hollow support pipes are fixedly connected to the water tank, and the water tank is connected to all four hollow support pipes. A shell is fixedly connected between every two adjacent hollow support pipes. A support frame is fixedly connected between the four hollow support pipes. The cooling mechanism is mounted on the support frame and connected to the hollow support pipes.

[0007] In a preferred embodiment of the present invention, the cooling mechanism includes an annular pipe, a connecting pipe, a branch pipe, a fixing ring, a spray rotating pipe, and a packing frame. Four annular pipes are fixedly connected to the support frame, and all four annular pipes are fixedly connected to the pipe frame and communicate with the pipe frame. A connecting pipe is fixedly connected to the top of each of the four annular pipes, and the annular pipe communicates with the connecting pipe. The connecting pipe is fixedly connected to the hollow support pipe and communicates with the hollow support pipe. A branch pipe is fixedly connected to the connecting pipe and communicates with the branch pipe. A fixing ring is fixedly connected to the top of the water inlet pipe. A spray rotating pipe is rotatably connected to the top of the fixing ring, and the spray rotating pipe is rotatably connected to the branch pipe and communicates with the branch pipe. Three packing frames are fixedly connected to the fixing ring, and all four annular pipes are fixedly connected to the three packing frames.

[0008] In a preferred embodiment of the present invention, a switching mechanism is further included. The switching mechanism is disposed on the cooling mechanism and connected to the housing. The switching mechanism includes a push frame, a pressure frame, a support spring, a guide limit frame, a sliding plate, and a switching bend plate. The push frame is slidably connected to the diversion pipe. The push frame has eight inclined slots, with two inclined slots forming a group. Four pressure frames are fixedly connected to the push frame. Each pressure frame is slidably connected to the housing. A support spring is connected between each pressure frame and the diversion pipe. Four guide limit frames are fixedly connected to the housing. Each guide limit frame has a guide groove. Two sliding plates are slidably connected in the guide groove of each guide limit frame. Each sliding plate has an inclined surface. The pressure frame contacts the inclined surface on the sliding plate. A switching bend plate is slidably connected to each connecting pipe. The switching bend plate is slidably connected to the push frame and contacts the top of the diversion pipe.

[0009] In a preferred embodiment of the present invention, a sealing mechanism is further included. The sealing mechanism is disposed on the housing and connected to the pressure frame. The sealing mechanism includes a sealing plate, a guide post, a compression spring, and a pressure rod. A guide post is fixedly connected to each housing. A sealing plate is slidably connected to each guide post. The sealing plate is in contact with the housing. A compression spring is connected between the sealing plate and the guide post. Two pressure rods are fixedly connected to each pressure frame. The two pressure rods are respectively located above the two sealing plates.

[0010] In a preferred embodiment of the present invention, a rotating impeller shaft is further included, and the rotating impeller shaft is rotatably connected to the diverter pipe.

[0011] In a preferred embodiment of the present invention, a heat sink is further included, and five heat sinks are fixedly connected to the annular tube.

[0012] In a preferred embodiment of the present invention, the spray pipe consists of a cylinder and four circular pipes with several small holes.

[0013] In a preferred embodiment of the present invention, the heat sink is located below the spray tube.

[0014] The present invention has the following advantages:

[0015] 1. During cooling, the cooling water carrying waste heat enters the annular pipe. The cooling water carrying waste heat in the annular pipe exchanges heat with the air in the water tank, thereby cooling the cooling water carrying waste heat in the annular pipe. The cooled water in the annular pipe flows through the connecting pipe to the distribution pipe and the hollow support pipe. A portion of the cooled water enters the spray tube through the distribution pipe, so that the spray tube can spray the cooled water evenly. Due to the temperature difference when the water and air come into contact, the air will carry away some of the heat from the water, thereby lowering the water temperature and achieving wet cooling of the cooling water. At the same time, another portion of the cooled water flows to the outlet pipe for discharge. During the flow of the cooling water, the air in the water tank will carry away the heat from the cooling water, achieving dry cooling of the cooling water. This allows for the use of a combination of wet and dry cooling to lower the temperature of the cooling water, thereby saving water and accelerating the cooling speed.

[0016] 2. Initially, the switching plate blocks the hollow support pipe, allowing the spray tube to evenly spray the cooled water. When the weather is cool and the wind is strong, the wind will cause the switching plate to move closer to the support spring, thus blocking the diversion pipe. This allows the cooled water to be discharged through the water tank and outlet pipe, enabling dry cooling of the cooling water by natural wind when the wind is strong. When the wind stops, the switching plate blocks the hollow support pipe again, and the pressure frame moves upward and resets, causing the two sliding plates to move away from each other. The spray tube continues to spray water, enabling wet cooling of the cooling water when the wind stops. This allows switching between dry and wet cooling based on natural wind, thereby saving water and further accelerating the cooling speed.

[0017] Third, when the pressure frame moves downward, it will drive the pressure rod to move downward. The downward movement of the pressure rod will press the sealing plate downward. The downward movement of the sealing plate will compress the compression spring. The downward movement of the sealing plate will prevent it from blocking the shell, thus allowing natural wind to blow into the water tank. This will accelerate the air circulation speed in the water tank, thereby accelerating the contact between water and air and accelerating the cooling of the cooling water in the water tank.

[0018] Fourth, when there is wind, the wind will drive the impeller shaft to rotate. When the impeller shaft rotates clockwise, it will drive the wind into the water tank, so that the water in the tank can come into full contact with the air, which can further accelerate the cooling of the water tank. When the impeller shaft rotates counterclockwise, it will exhaust the air with residual heat from the water tank, thus saving water and further accelerating the cooling speed.

[0019] Fifth, the heat dissipation plate can increase the heat dissipation area inside the water tank. When water droplets fall onto the heat dissipation plate, they can accelerate the evaporation of water, thereby further accelerating the cooling of the water tank. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the cooling mechanism of the present invention.

[0023] Figure 4 This is a partial three-dimensional structural diagram of the cooling mechanism of the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the support frame, annular tube, and heat sink of the present invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the water inlet pipe, pipe support, and annular pipe of the present invention.

[0026] Figure 7 This is a schematic diagram of the first partial three-dimensional structure of the present invention.

[0027] Figure 8 This is a partial three-dimensional structural diagram of the switching mechanism of the present invention.

[0028] Figure 9 For the present invention Figure 8 A magnified three-dimensional structural diagram at point A in the middle.

[0029] Figure 10 This is a partial cross-sectional perspective view of the cooling mechanism of the present invention.

[0030] Figure 11 This is a schematic diagram of the second partial three-dimensional structure of the present invention.

[0031] Figure 12 For the present invention Figure 11 A magnified three-dimensional structural diagram at point B.

[0032] The above-mentioned attached drawings include the following reference numerals: 1: water tank, 2: outlet pipe, 3: inlet pipe, 31: pipe rack, 4: hollow support pipe, 5: shell, 6: support frame, 71: annular pipe, 72: connecting pipe, 73: diverter pipe, 74: fixing ring, 75: spray rotating pipe, 76: packing frame, 81: push frame, 82: pressure frame, 83: support spring, 84: guide limit frame, 85: sliding plate, 86: switching bend plate, 91: sealing plate, 92: guide column, 93: compression spring, 94: pressure rod, 10: rotating impeller shaft, 11: heat dissipation plate. Detailed Implementation

[0033] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0034] Example 1: A natural ventilation combined wet and dry cooling tower, such as Figures 1-11 As shown, the system includes a water tank 1, an outlet pipe 2, an inlet pipe 3, a pipe rack 31, hollow support pipes 4, a housing 5, a support frame 6, and a cooling mechanism. The water tank 1 is bolted to the outlet pipe 2, and the water tank 1 has an outlet at its lower part. The water tank 1 is connected to the outlet pipe 2. The water tank 1 is bolted to the inlet pipe 3, and the inlet pipe 3 is bolted to the pipe rack 31. The water tank 1 is bolted to four hollow support pipes 4, and the water tank 1 is connected to all four hollow support pipes 4. A housing 5 is bolted between every two adjacent hollow support pipes 4. The four hollow support pipes 4 are bolted to the support frame 6. The cooling mechanism is mounted on the support frame 6 and connected to the hollow support pipes 4.

[0035] The cooling mechanism includes annular pipes 71, connecting pipes 72, branch pipes 73, fixing rings 74, spray pipes 75, and a packing frame 76. Four annular pipes 71 are bolted to the support frame 6. All four annular pipes 71 are bolted to the pipe frame 31 and communicate with it. Connecting pipes 72 are bolted to the top of each of the four annular pipes 71, and these pipes communicate with each other. The connecting pipes 72 are bolted to the hollow support pipe 4 and communicate with it. A branch pipe 73 is bolted to the pipe 72, and the connecting pipe 72 is connected to the branch pipe 73. A fixing ring 74 is bolted to the top of the water inlet pipe 3, and a spray rotating pipe 75 is rotatably connected to the top of the fixing ring 74. The spray rotating pipe 75 consists of a cylinder and four round pipes with several small holes. The spray rotating pipe 75 is rotatably connected to the branch pipe 73 and is connected to the branch pipe 73. Three packing frames 76 are bolted to the fixing ring 74, and all four annular pipes 71 are bolted to the three packing frames 76.

[0036] During cooling, the cooling water carrying waste heat flows through the inlet pipe 3 to the annular pipe 71. The cooling water in the annular pipe 71 exchanges heat with the air in the water tank 1, thus cooling the cooling water in the annular pipe 71. The cooled water in the annular pipe 71 then flows through the connecting pipe 72 to the distribution pipe 73 and the hollow support pipe 4. A portion of the cooled water enters the spray rotating pipe 75 through the distribution pipe 73. The cooled water is then sprayed out through the spray rotating pipe 75. Due to the high flow rate of the cooled water in the distribution pipe 73 and the spray rotating pipe 75, the sprayed water causes the spray rotating pipe 75 to rotate while spraying water, ensuring that the spray rotating pipe 75 can evenly spray the cooled water. Because of the temperature difference when water and air come into contact, the air will carry away some of the heat from the water, thus lowering the water temperature. The water sprayed from the spray pipe 75 will flow to the bottom of the water tank 1 and then be discharged through the outlet on the water tank 1, thus enabling wet cooling of the cooling water. At the same time, another part of the cooled water will flow to the water tank 1 through the hollow support pipe 4, and then flow to the outlet pipe 2 through the water tank 1, and finally be discharged through the outlet pipe 2. During the flow of the cooling water, the air in the water tank 1 will carry away the heat from the cooling water, thus enabling dry cooling of the cooling water. Therefore, a combination of wet and dry cooling can be used to cool the cooling water, thereby saving water and accelerating the cooling speed.

[0037] Example 2: Based on Example 1, such as Figure 1 , Figure 2 and Figures 8-12As shown, it also includes a switching mechanism, which is mounted on the cooling mechanism and connected to the housing 5. The switching mechanism includes a push frame 81, a pressure frame 82, a support spring 83, a guide limit frame 84, a sliding plate 85, and a switching bend plate 86. The push frame 81 is slidably connected to the diversion pipe 73. The push frame 81 has eight inclined slots, with two inclined slots forming a group. Four pressure frames 82 are bolted to the push frame 81. Each pressure frame 82 is slidably connected to the housing 5, and each pressure frame 82 is connected to the diversion pipe 73 by a hanging device. A hook is connected to a support spring 83. Four guide limit frames 84 are bolted to the housing 5. Each of the four guide limit frames 84 has a guide groove. Two sliding plates 85 are slidably connected in the guide groove of each guide limit frame 84. Each sliding plate 85 has an inclined surface. The pressure frame 82 contacts the inclined surface on the sliding plate 85. A switching bend plate 86 is slidably connected to each connecting pipe 72. The switching bend plate 86 is slidably connected to the push frame 81 and contacts the top of the diversion pipe 73.

[0038] Initially, the switching bend plate 86 blocks the hollow support pipe 4, allowing the spray pipe 75 to spray the cooled water evenly. When the weather is cool and the wind is strong, the wind will push the sliding plate 85 to move closer to each other in the guide groove of the guide limit frame 84, causing the inclined surfaces on the two sliding plates 85 to press the pressure frame 82, thus causing the pressure frame 82 to move downward. The downward movement of the pressure frame 82 compresses the support spring 83, and the downward movement of the pressure frame 82 will drive the push frame 81 to move downward. The downward movement of the push frame 81 causes the switching bend plate 86 to slide in the inclined groove of the push frame 81, causing the switching bend plate 86 to move closer to the support spring 83, thereby blocking the diversion pipe 73. This allows the cooled water in the annular pipe 71 to enter the hollow support pipe 4 through the connecting pipe 72, and then flow to the water tank 1 through the hollow support pipe 4. The cooled water will be discharged through the water tank 1 and the outlet pipe 2, thus enabling dry cooling of the cooling water by natural wind when the wind is strong.

[0039] When the wind stops, the support spring 83 will reset, which will push the pressure frame 82 to move upward and reset. The upward movement of the pressure frame 82 will drive the push frame 81 to reset, and the reset of the push frame 81 will drive the switching bend plate 86 to reset, so that the switching bend plate 86 will block the hollow support tube 4 again. The upward movement of the pressure frame 82 will also cause the two sliding plates 85 to move away from each other, and the spray pipe 75 will continue to spray water. This allows for wet cooling of the cooling water when the wind stops, so that dry and wet cooling can be switched according to the natural wind, thereby saving water and further accelerating the cooling speed.

[0040] Example 3: Based on Example 2, such as Figures 1-2 and Figure 12 As shown, it also includes a sealing mechanism, which is mounted on the housing 5 and connected to the pressure frame 82. The sealing mechanism includes a sealing plate 91, a guide post 92, a compression spring 93, and a pressure rod 94. Each housing 5 is bolted to a guide post 92, and each guide post 92 is slidably connected to a sealing plate 91. The sealing plate 91 contacts the housing 5, and a compression spring 93 is connected between the sealing plate 91 and the guide post 92 via a hook. Each pressure frame 82 is bolted to two pressure rods 94, which are located above the two sealing plates 91 respectively.

[0041] When the pressure frame 82 moves downward, it will drive the pressure rod 94 to move downward. The downward movement of the pressure rod 94 will press down on the sealing plate 91 and move it downward. The downward movement of the sealing plate 91 will compress the compression spring 93. The downward movement of the sealing plate 91 will prevent it from blocking the housing 5, thereby allowing natural wind to blow into the water tank 1, which can accelerate the air circulation speed in the water tank 1, thereby accelerating the contact between water and air, and accelerating the cooling of the cooling water in the water tank 1.

[0042] Example 4: Based on Example 3, such as Figure 2 and Figure 11 As shown, it also includes a rotating impeller shaft 10, which is rotatably connected to the diverter pipe 73.

[0043] When there is wind, the wind will drive the impeller shaft 10 to rotate. When the impeller shaft 10 rotates clockwise, it will drive the wind to flow into the water tank 1, so that the water in the water tank 1 can fully contact the air, which can further accelerate the cooling of the water tank 1. When the impeller shaft 10 rotates counterclockwise, it will exhaust the air with residual heat from the water tank 1, thus saving water and further accelerating the cooling speed.

[0044] Example 5: Based on Example 4, such as Figure 5 As shown, it also includes a heat dissipation plate 11. Five heat dissipation plates 11 are bolted to the annular pipe 71. The heat dissipation plates 11 are located below the spray pipe 75.

[0045] The heat dissipation plate 11 can increase the heat dissipation area inside the water tank 1. When water droplets fall onto the heat dissipation plate 11, they can accelerate the evaporation of water, thereby further accelerating the cooling of the water tank 1.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A natural draft hybrid cooling tower, characterized by comprising The utility model provides a water tank (1), water outlet pipe (2), water inlet pipe (3), pipe frame (31), hollow support pipe (4), shell (5), support frame (6) and cooling mechanism, the water tank (1) is fixedly connected with water outlet pipe (2), the water tank (1) lower part is opened with water outlet, the water tank (1) is connected with water outlet pipe (2), the water tank (1) is fixedly connected with water inlet pipe (3), water inlet pipe (3) upper portion is fixedly connected with pipe frame (31), the water tank (1) is fixedly connected with four hollow support pipes (4), the water tank (1) is connected with four hollow support pipes (4) all, every two adjacent hollow support pipe (4) all are fixedly connected with a shell (5), four hollow support pipes (4) are fixedly connected with support frame (6), and cooling mechanism is set up in support frame (6) and is connected with hollow support pipe (4), Cooling mechanism includes annular pipe (71), connecting pipe (72), shunt pipe (73), fixed ring (74), spray rotary pipe (75) and filler frame (76), support frame (6) is fixedly connected with four annular pipes (71), four annular pipes (71) all are fixedly connected with pipe frame (31), four annular pipes (71) all are connected with pipe frame (31), four annular pipes (71) top all are fixedly connected with connecting pipe (72), annular pipe (71) is connected with connecting pipe (72), connecting pipe (72) is fixedly connected with hollow support pipe (4), connecting pipe (72) is connected with hollow support pipe (4), connecting pipe (72) is fixedly connected with shunt pipe (73), connecting pipe (72) is connected with shunt pipe (73), water inlet pipe (3) top is fixedly connected with fixed ring (74), fixed ring (74) top rotatably connected with spray rotary pipe (75), spray rotary pipe (75) rotatably connected with shunt pipe (73), spray rotary pipe (75) is connected with shunt pipe (73), fixed ring (74) is fixedly connected with three filler frames (76), four annular pipes (71) all are fixedly connected with three filler frames (76).

2. A natural draft wet-dry hybrid cooling tower according to claim 1, wherein Switching mechanism is arranged on the cooling mechanism and connected with the shell (5), and the switching mechanism comprises a pushing frame (81), a pressing frame (82), a supporting spring (83), a guide limiting frame (84), a sliding plate (85) and a switching bending plate (86), the shunt pipe (73) is slidably connected with the pushing frame (81), eight inclined grooves are formed in the pushing frame (81), two inclined grooves form a group, four pressing frames (82) are fixedly connected to the pushing frame (81), each pressing frame (82) is slidably connected with the shell (5), and the supporting spring (83) is connected between each pressing frame (82) and the shunt pipe (73), four guide limiting frames (84) are fixedly connected to the shell (5), guide grooves are formed in the four guide limiting frames (84), two sliding plates (85) are slidably connected in the guide grooves of each guide limiting frame (84), each sliding plate (85) is provided with an inclined surface, the pressing frame (82) is in contact with the inclined surface of the sliding plate (85), and the switching bending plate (86) is slidably connected with the pushing frame (81).

3. A natural draft wet-dry hybrid cooling tower according to claim 2, wherein The sealing mechanism is arranged on the shell (5) and connected with the pressing frame (82), and the sealing mechanism comprises a sealing plate (91), a guide column (92), a compression spring (93) and a pressing rod (94), the guide column (92) is fixedly connected to each shell (5), the sealing plate (91) is slidably connected to each guide column (92), the sealing plate (91) is in contact with the shell (5), the compression spring (93) is connected between the sealing plate (91) and the guide column (92), and the pressing rod (94) is fixedly connected to each pressing frame (82). Two pressing rods (94) are located above the two sealing plates (91) respectively.

4. A natural draft wet-dry hybrid cooling tower according to claim 3, wherein The rotating impeller shaft (10) is rotatably connected to the shunt pipe (73).

5. A natural draft wet-dry hybrid cooling tower according to claim 4, wherein The heat dissipation plate (11) is fixedly connected to the annular pipe (71).

6. A natural draft wet-dry hybrid cooling tower according to claim 4, wherein The spraying rotating pipe (75) is composed of a cylinder and four circular pipes provided with a plurality of small holes.

7. A natural draft wet-dry hybrid cooling tower according to claim 5, wherein The heat dissipation plate (11) is located below the spraying rotating pipe (75).

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