Gravity self-balancing uniform water distribution system and cooling tower

Abstract

The embodiment of the invention provides a gravity self-balancing uniform water distribution system which comprises a first-stage gravity self-balancing water distribution pipeline, a second-stage gravity self-balancing water distribution pipeline and a third-stage gravity self-balancing water distribution pipeline. All the second-stage gravity self-balancing water distribution pipelines are communicated with the first-stage gravity self-balancing water distribution pipelines, and all the third-stage gravity self-balancing water distribution pipelines are connected to the second-stage gravity self-balancing water distribution pipelines. Circulating water of the cooling tower can be automatically decompressed after entering the first-stage gravity self-balancing water distribution pipeline, and uniformly flows into the second-stage gravity self-balancing water distribution pipelines on the peripheral side under the self-weight effect of the water to be subjected to double uniform water distribution, and the water levels of the second-stage gravity self-balancing water distribution pipelines are consistent in height, so that uniform water distribution is realized. Inlet water flows to the third-stage gravity self-balancing water distribution pipeline again, the pressure of each water spray nozzle directly or indirectly connected with the third-stage gravity self-balancing water distribution pipeline is roughly consistent, and the water outlet amount and the spraying area of each water spray nozzle are roughly the same, so that uniform water distribution is realized, the water distribution is not influenced by the water pressure of the inlet water, and the water distribution efficiency is improved. And the cooling efficiency of the cooling tower is obviously improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooling towers, and in particular to a gravity self-balancing uniform water distribution system and a cooling tower. Background Art

[0002] The water distribution system is an important component of the counterflow cooling tower, and the quality of its water distribution directly affects the operating efficiency of the cooling tower. In the related art, the water distribution system is composed of an inlet pipe, a nozzle, a straight pipe, an umbrella-shaped disc and a toothed chassis. The straight pipe is distributed in the horizontal plane at the top of the filler, the inlet pipe is directly connected to the straight pipe, and the nozzle is arranged on the straight pipe. The water enters the straight pipe from the inlet pipe and is sprayed out by the nozzle on the straight pipe, directly shooting onto the toothed umbrella-shaped chassis, then reflecting onto the disk, and then splashing around and falling onto the filler. This water distribution system has certain requirements for water pressure and water volume. On the extension path along the straight pipe, the water pressure changes step by step. Only when the water volume and water pressure are moderate can the designed uniform water distribution effect be achieved. When the flow rate decreases or the water pressure decreases, the water distribution system is prone to uneven water distribution, resulting in a reduction in the water distribution area, and some positions on the filler surface cannot be distributed with water (dry area phenomenon), which reduces the cooling efficiency of the cooling tower. Summary of the invention

[0003] In order to solve one of the above-mentioned technical defects, a gravity self-balancing uniform water distribution system and a cooling tower are provided in the embodiment of the present application to solve the problem in the prior art that water pressure changes easily lead to uneven water distribution and low cooling efficiency.

[0004] The present invention adopts the following technical solution:

[0005] A gravity self-balancing uniform water distribution system, comprising:

[0006] A first-stage gravity self-balancing water distribution pipeline, wherein the first-stage gravity self-balancing water distribution pipeline extends longitudinally, has a water inlet at the bottom, and has a pressure relief port at the top;

[0007] A plurality of second-stage self-balancing gravity water distribution pipes, each of which is located on the periphery of the first-stage self-balancing gravity water distribution pipe, each of which is connected to the first-stage self-balancing gravity water distribution pipe, and each of which has an open top;

[0008] A plurality of third-stage self-balancing gravity water distribution pipes, each of which is located at the bottom of a corresponding second-stage self-balancing gravity water distribution pipe and connected to the corresponding second-stage self-balancing gravity water distribution pipe;

[0009] Wherein, the liquid flows sequentially through the first-stage gravity self-balancing water distribution pipeline, the second-stage gravity self-balancing water distribution pipeline and the third-stage gravity self-balancing water distribution pipeline.

[0010] Optionally, the gravity self-balancing uniform water distribution system includes a plurality of connecting pipes, and the diameter of the connecting pipes is smaller than the second-stage gravity self-balancing water distribution pipe and the first-stage gravity self-balancing water distribution pipe;

[0011] Each of the connecting tubes is arranged in sequence along the circumference of the first-stage gravity self-balancing water distribution pipeline, and each of the connecting tubes is located in the same plane. One end of each of the connecting tubes is connected to the first-stage gravity self-balancing water distribution pipeline, and the other end of each of the connecting tubes is connected to the corresponding second-stage gravity self-balancing water distribution pipeline.

[0012] Optionally, along the circumference of the first-stage gravity self-balancing water distribution pipeline, at least two adjacent second-stage gravity self-balancing water distribution pipelines are connected by a connecting pipe;

[0013] Wherein, the connecting pipe is connected to the second-stage gravity self-balancing water distribution pipeline at both ends, and the connecting pipe is located between the connecting pipe and the third-stage gravity self-balancing water distribution pipeline.

[0014] Optionally, the gravity self-balancing uniform water distribution system includes a pressure relief water retaining component, which is arranged on the first-stage gravity self-balancing water distribution pipeline and covers the cross-section of the first-stage gravity self-balancing water distribution pipeline, and the pressure relief water retaining component has air holes.

[0015] Optionally, the gravity self-balancing uniform water distribution system includes a water inlet main pipe;

[0016] The outer diameter of the water inlet main pipe is smaller than the outer diameter of the first-stage gravity self-balancing water distribution pipe;

[0017] The water inlet main pipe is located at the bottom of the first-stage gravity self-balancing water distribution pipeline, and the water inlet main pipe is connected to the water inlet at the bottom of the first-stage gravity self-balancing water distribution pipeline.

[0018] Optionally, each of the third-stage gravity self-balancing water distribution pipes is located in the same plane, and each of the third-stage gravity self-balancing water distribution pipes has the same size and shape;

[0019] Each third-stage self-balancing gravity water distribution pipeline is respectively connected to the same number of second-stage self-balancing gravity water distribution pipelines, and each second-stage self-balancing gravity water distribution pipeline is symmetrically arranged on the third-stage self-balancing gravity water distribution pipeline.

[0020] Optionally, the gravity self-balancing uniform water distribution system comprises a plurality of water distribution pipes, each of which is arranged in the third-level gravity self-balancing water distribution pipeline, each of which is arranged in sequence along the length direction of the third-level gravity self-balancing water distribution pipeline, and each of which is connected to a water nozzle;

[0021] Each of the water distribution pipes is symmetrically arranged on the third-stage gravity self-balancing water distribution pipeline with the middle portion of the third-stage gravity self-balancing water distribution pipeline as the center.

[0022] Optionally, the gravity self-balancing uniform water distribution system is characterized by comprising an exhaust pipe connected to the end of the third-stage gravity self-balancing water distribution pipeline.

[0023] Optionally, the gravity self-balancing uniform water distribution system comprises a plurality of water distribution sub-units, each of the water distribution sub-units being arranged in a plurality of rows and columns on a horizontal plane;

[0024] Wherein, each of the water distribution sub-units includes the first-stage gravity self-balancing water distribution pipeline, the second-stage gravity self-balancing water distribution pipeline and the third-stage gravity self-balancing water distribution pipeline.

[0025] The second object of the present application is to provide a cooling tower, comprising the above-mentioned gravity self-balancing uniform water distribution system.

[0026] By adopting the above technical solution, the present application has the following beneficial effects:

[0027] The gravity self-balancing uniform water distribution system of the present application includes: first, second and third level gravity self-balancing water distribution pipes. Each second level gravity self-balancing water distribution pipe is connected to the first level gravity self-balancing water distribution pipe, and each third level gravity self-balancing water distribution pipe is connected to the second level gravity self-balancing water distribution pipe. The circulating water of the cooling tower will automatically release pressure after entering the first level gravity self-balancing water distribution pipe, and under the action of the water's own weight, it will evenly flow into the second level gravity self-balancing water distribution pipes on the surrounding side for double uniform water distribution. The water level height of each second level gravity self-balancing water distribution pipe is consistent, and the incoming water will flow to the third level gravity self-balancing water distribution pipe again. The pressure at each water nozzle directly or indirectly connected to the third level gravity self-balancing water distribution pipe is roughly the same, and the water output and spraying area of ​​each water nozzle are roughly the same, thereby achieving uniform water distribution, which is not affected by the inlet water pressure and significantly improves the cooling efficiency of the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1A schematic diagram of the three-dimensional structure of a water distribution system provided in an embodiment of the present application is shown;

[0030] Figure 2 Show Figure 1 Enlarged view of part A in the middle;

[0031] Figure 3 Show Figure 1 Enlarged view of middle part B;

[0032] Figure 4 Another perspective view showing the three-dimensional structure of the water distribution system provided in an embodiment of the present application;

[0033] Figure 5 A side view showing a water distribution system provided by an embodiment of the present application, which is composed of a plurality of water distribution sub-units;

[0034] Figure 6 A top view showing a water distribution system provided in an embodiment of the present application, which is composed of a plurality of water distribution sub-units.

[0035] In the figure: 100, water distribution subunit; 1, first-stage gravity self-balancing water distribution pipeline; 11, pressure relief port; 2, second-stage gravity self-balancing water distribution pipeline; 21, top opening; 3, third-stage gravity self-balancing water distribution pipeline; 4, connecting pipe; 5, connecting pipe; 6, pressure relief water retaining component; 61, air vent; 7, water inlet main pipe; 8, water distribution pipe; 9, water nozzle; 10, exhaust pipe. DETAILED DESCRIPTION

[0036] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Embodiment 1

[0041] like Figures 1 to 6 As shown, Embodiment 1 of the present application provides a gravity self-balancing uniform water distribution system, comprising: a first-stage gravity self-balancing water distribution pipeline 1, a second-stage gravity self-balancing water distribution pipeline 2 and a third-stage gravity self-balancing water distribution pipeline 3. The first-stage gravity self-balancing water distribution pipe 1 extends longitudinally, and has a water inlet at the bottom, and a pressure relief port 11 at the top. Each of the second-stage gravity self-balancing water distribution pipes 2 is located on the circumference of the first-stage gravity self-balancing water distribution pipe 1, and each of the second-stage gravity self-balancing water distribution pipes 2 is connected to the first-stage gravity self-balancing water distribution pipe 1. The second-stage gravity self-balancing water distribution pipe 2 has a top opening 21, and each of the third-stage gravity self-balancing water distribution pipes 3 is located at the bottom of the corresponding second-stage gravity self-balancing water distribution pipe 2 and is connected to the corresponding second-stage gravity self-balancing water distribution pipe 2, wherein the liquid flows through the first-stage gravity self-balancing water distribution pipe 1, the second-stage gravity self-balancing water distribution pipe 2 and the third-stage gravity self-balancing water distribution pipe 3 in sequence and is finally discharged.

[0042] A pressure relief port 11 is provided at the top of the first-stage gravity self-balancing water distribution pipe 1 of the water distribution system of the present application, so that the circulating water of the cooling tower will automatically release pressure after entering the first-stage gravity self-balancing water distribution pipe 1, and under the action of the water's own weight, it will evenly flow into multiple second-stage gravity self-balancing water distribution pipes 2 on the surrounding side for double uniform water distribution. The second-stage gravity self-balancing water distribution pipe is regulated by the atmospheric pressure of the open system and the bottom connecting pipe 4, and the water level heights of each second-stage gravity self-balancing water distribution pipe 2 are consistent. The incoming water will flow to the third-stage gravity self-balancing water distribution pipe 3 again, and the pressures at each water nozzle 9 directly or indirectly connected to the third-stage gravity self-balancing water distribution pipe 3 are roughly the same, and the water output and spraying area of ​​each water nozzle 9 are roughly the same, thereby achieving uniform water distribution, which is not affected by the inlet water pressure and significantly improves the cooling efficiency of the cooling tower.

[0043] After the first-stage gravity self-balancing water distribution pipe 1 unloads the water inlet pressure, the water uses its own height difference to evenly flow through the connecting pipe 4 to the second-stage gravity self-balancing water distribution pipe 2 installed at the four corners. The first-stage gravity self-balancing water distribution pipe 1 is a water storage pipe, and a central water storage pipe with a reasonable height and diameter can be designed according to the water inlet flow of the cooling tower.

[0044] It should be noted that in the embodiment of the present application, the gravity self-balancing uniform water distribution system is not limited to only setting up three levels of gravity self-balancing water distribution pipes, and more levels of gravity self-balancing water distribution pipes can be arranged according to actual conditions. For example, the fourth level of gravity self-balancing water distribution pipes, the fifth level of gravity self-balancing water distribution pipes, and so on can be arranged downstream of the third level of gravity self-balancing water distribution pipe 3.

[0045] In some possible embodiments, the gravity self-balancing uniform water distribution system includes a plurality of connecting pipes 4, the diameter of the connecting pipes 4 is smaller than the second-stage gravity self-balancing water distribution pipeline 2 and the first-stage gravity self-balancing water distribution pipeline 1, and each of the connecting pipes 4 is arranged in sequence along the circumference of the first-stage gravity self-balancing water distribution pipeline 1 at intervals, and each of the connecting pipes 4 is located in the same plane, one end of each of the connecting pipes 4 is connected to the first-stage gravity self-balancing water distribution pipeline 1, and the other end of each of the connecting pipes 4 is respectively connected to the corresponding second-stage gravity self-balancing water distribution pipeline 2.

[0046] Since the gravity self-balancing uniform water distribution system is an open structure, each second-stage gravity self-balancing water distribution pipe 2 is connected to the first-stage gravity self-balancing water distribution pipe 1 through a connecting pipe 4, so the water level height of each second-stage gravity self-balancing water distribution pipe 2 must be consistent, and the amount of water pressed onto each third-stage gravity self-balancing water distribution pipe 3 is also the same.

[0047] The outer diameter of the connecting pipe 4 is much smaller than the first-stage self-balancing gravity water distribution pipe 1, so that multiple connecting pipes 4 are conveniently connected to the same height section of the first-stage self-balancing gravity water distribution pipe 1. The first-stage self-balancing gravity water distribution pipe 1 is provided with multiple openings spaced apart along the circumference, and each opening is located at the same height. Multiple connecting pipes 4 are spaced apart in sequence around the circumference of the first-stage self-balancing gravity water distribution pipe 1, and are respectively connected to the corresponding openings. Each connecting pipe 4 is located in the same horizontal plane. Each second-stage self-balancing gravity water distribution pipe 2 is arranged parallel to the first-stage self-balancing gravity water distribution pipe 1. The outer diameter of the second-stage self-balancing gravity water distribution pipe 2 is not greater than that of the first-stage self-balancing gravity water distribution pipe 1. The number of second-stage self-balancing gravity water distribution pipes 2 can be two, three, four or more.

[0048] The connecting pipe 4 can be vertically connected to the first-stage gravity self-balancing water distribution pipeline 1 and the second-stage gravity self-balancing water distribution pipeline 2. Each connecting pipe 4 can be formed by splicing a plurality of cylindrical pipes. Adjacent cylindrical pipes can be connected and fixed by clamps.

[0049] In some possible implementations, such as Figure 1 As shown, along the circumference of the first-stage gravity self-balancing water distribution pipe 1, at least two adjacent second-stage gravity self-balancing water distribution pipes 2 are connected by a connecting pipe 5, wherein the connecting pipe 5 connects the second-stage gravity self-balancing water distribution pipes 2 at both ends, and the connecting pipe 5 is located between the connecting pipe 4 and the third-stage gravity self-balancing water distribution pipe 3 in the height direction.

[0050] The setting of the connecting pipe 5 increases the overall structural strength of each second-stage self-balancing gravity water distribution pipe 2, making the water distribution system well-integrated, the overall structure not easily deformed, and extending the service life. Among them, the connecting pipe 5 can be a hollow pipe, which can connect two adjacent second-stage self-balancing gravity water distribution pipes 2, so that a U-shaped pipe structure is formed between each second-stage self-balancing gravity water distribution pipe 2, ensuring that the water flow rate and water pressure in the water distribution system are uniform, and the water pressure supplied to each third-stage self-balancing gravity water distribution pipe 3 is also consistent, and the amount of water diverted to each third-stage self-balancing gravity water distribution pipe 3 is equal, achieving the effect of uniform water distribution.

[0051] In some possible embodiments, combined with Figure 1 and Figure 2 As shown, the gravity self-balancing uniform water distribution system includes a pressure relief water retaining component 6, which is arranged on the first-level gravity self-balancing water distribution pipeline 1 and covers the cross-section of the first-level gravity self-balancing water distribution pipeline 1. The pressure relief water retaining component 6 has an air vent 61.

[0052] A pressure relief port 11 is provided on the top of the first-stage gravity self-balancing water distribution pipe 1 of the water distribution system of the present application, so that the water will automatically release pressure after entering the first-stage gravity self-balancing water distribution pipe 1, and under the action of its own weight, it will evenly flow into the multiple second-stage gravity self-balancing water distribution pipes 2 on the surrounding side for double uniform water distribution, wherein a pressure relief water blocking component 6 is provided on the first-stage gravity self-balancing water distribution pipe 1, which does not affect the pressure relief of the incoming water, and also serves the purpose of blocking water, preventing the incoming water from being directly discharged from the pressure relief port 11 of the first-stage gravity self-balancing water distribution pipe 1.

[0053] In some possible embodiments, the gravity self-balancing uniform water distribution system includes a water inlet main pipe 7, the outer diameter of the water inlet main pipe 7 is smaller than the outer diameter of the first-stage gravity self-balancing water distribution pipeline 1, the water inlet main pipe 7 is located at the bottom of the first-stage gravity self-balancing water distribution pipeline 1, and the water inlet main pipe 7 is connected to the water inlet at the bottom of the first-stage gravity self-balancing water distribution pipeline 1.

[0054] A water pump can be provided at the bottom of the water inlet main pipe 7 to pump water and drive the water to flow from bottom to top into the first-stage gravity self-balancing water distribution pipe 1. The first-stage gravity self-balancing water distribution pipe 1 is used to relieve the pressure of the incoming water and needs to be diverted to each second-stage gravity self-balancing water distribution pipe 2. Therefore, the first-stage gravity self-balancing water distribution pipe 1 is a water storage cylinder with a large diameter to meet the requirements of water storage and water distribution.

[0055] In some possible implementation schemes, each of the third-stage self-balancing gravity water distribution pipes 3 is located in the same plane, and each of the third-stage self-balancing gravity water distribution pipes 3 has the same size and shape, each of the third-stage self-balancing gravity water distribution pipes 3 is respectively connected to the same number of second-stage self-balancing gravity water distribution pipes 2, and each of the second-stage self-balancing gravity water distribution pipes 2 is symmetrically arranged in the third-stage self-balancing gravity water distribution pipe.

[0056] In this embodiment, the size and shape of each third-level gravity self-balancing water distribution pipe 3 are the same or symmetrical, so that on the path from the first-level gravity self-balancing water distribution pipe 1, the second-level gravity self-balancing water distribution pipe 2 to the third-level gravity self-balancing water distribution pipe 3, the water supply path of each third-level gravity self-balancing water distribution pipe 3 is roughly the same. Therefore, the water pressure in each third-level gravity self-balancing water distribution pipe 3 is basically the same, and each third-level gravity self-balancing water distribution pipe 3 can drain water evenly, thereby achieving uniform water distribution, which is not affected by the inlet water pressure and significantly improves the cooling efficiency of the cooling tower.

[0057] In some possible embodiments, combined with Figure 1 and Figure 4As shown, the gravity self-balancing uniform water distribution system includes a plurality of water distribution pipes 8, each of which is arranged in the third-level gravity self-balancing water distribution pipeline 3, and each of which is arranged in sequence along the length direction of the third-level gravity self-balancing water distribution pipeline 3. A water spray nozzle 9 is connected to the water distribution pipe 8, and each of which is symmetrically arranged in the third-level gravity self-balancing water distribution pipeline 3 with the middle part (midpoint along the length direction) of the third-level gravity self-balancing water distribution pipeline 3 as the center. Each water distribution pipe 8 can be arranged in the length direction of the third-level gravity self-balancing water distribution pipeline 3, and the number and position of the water spray nozzles 9 on each water distribution pipe 8 are equal, so that the water pressure of each symmetrically arranged water distribution pipe 8 and water spray nozzle 9 is roughly consistent, and the amount of water sprayed by each water spray nozzle 9 is roughly equal, so as to achieve the effect of uniform water distribution.

[0058] In some possible embodiments, combined with Figure 1 and Figure 3 As shown, the gravity self-balancing uniform water distribution system includes an exhaust pipe 10, and the exhaust pipe 10 is connected to the end of the third-level gravity self-balancing water distribution pipeline 3.

[0059] The water distribution system of the present application is provided with an exhaust pipe 10 on the third-stage gravity self-balancing water distribution pipe 3, which can effectively discharge the bubbles in the water distribution system. At the same time, the exhaust pipe 10 is connected to the outside air, so that the second-stage gravity self-balancing water distribution pipe 2, the third-stage gravity self-balancing water distribution pipe 3 and the exhaust pipe 10 form a U-shaped pipe structure, ensuring that the water flow rate and water pressure in the water distribution system are uniform, and the water pressure to each water distribution pipe 8 and water nozzle 9 is also consistent. The amount of water sprayed by each water nozzle 9 is equal, achieving the effect of uniform water distribution.

[0060] The exhaust pipes 10 are provided at both ends of the third-stage gravity self-balancing water distribution pipeline 3, which can smoothly discharge the bubbles in the third-stage gravity self-balancing water distribution pipeline 3 out of the system. At the same time, the exhaust pipe 10 is connected to the outside air, so that the entire system has a U-shaped tube structure, which ensures that the water flow rate and water pressure in the third-stage gravity self-balancing water distribution pipeline 3 are uniform, and the pressure to each water distribution pipe and water nozzle is also consistent, and the amount of water sprayed by each water nozzle is the same, so as to achieve the effect of uniform water distribution. When the amount of water is large, the water level in the first-stage gravity self-balancing water distribution pipeline is high, and the water output of the water nozzle is large. By utilizing the gravity of the water itself, the water output of the water nozzle is automatically adjusted, so that when the flow rate changes, it can also be sprayed evenly on the filler surface.

[0061] It should be noted that in the embodiment of the present application, all pipe fittings can be made of engineering steel pipes, which are acid-resistant and alkali-resistant, and will not deform or age under high temperature (such as 95°C) conditions for a long time, and are strong, durable and have a long service life.

[0062] In some possible embodiments, combined with Figure 5 and Figure 6 As shown, the gravity self-balancing uniform water distribution system includes a plurality of water distribution subunits 100, each of which is arranged in multiple rows and columns on a horizontal plane, wherein each of the water distribution subunits 100 includes the first-stage gravity self-balancing water distribution pipeline 1, the second-stage gravity self-balancing water distribution pipeline 2 and the third-stage gravity self-balancing water distribution pipeline 3. The structure of each of the water distribution subunits 100 is as described above. An appropriate number of water distribution subunits 100 can be selected according to the actual size and actual needs of the cooling tower. Among them, each water distribution subunit 100 can have a corresponding water inlet main pipe 7, and each water inlet main pipe 7 is connected to a water pump. Alternatively, each water inlet main pipe 7 is connected to a mother pipe, and a water pump is arranged on the mother pipe.

[0063] Embodiment 2

[0064] The second embodiment of the present disclosure further describes the water distribution system in detail based on the first embodiment. Figure 1 and Figure 3 As shown, the water distribution system includes: a third-level gravity self-balancing water distribution pipe 3 and a second-level gravity self-balancing water distribution pipe 2, the third-level gravity self-balancing water distribution pipe 3 is located in a horizontal plane, the second-level gravity self-balancing water distribution pipe 2 is connected to the third-level gravity self-balancing water distribution pipe 3, and an exhaust pipe 10 is connected to the third-level gravity self-balancing water distribution pipe 3. The diameter of the exhaust pipe 10 is smaller than that of the third-level gravity self-balancing water distribution pipe 3. The exhaust pipe 10 is connected to the top of the third-level gravity self-balancing water distribution pipe 3, and the exhaust pipe 10 is connected to the third-level gravity self-balancing water distribution pipe 3, wherein the liquid is discharged after passing through the second-level gravity self-balancing water distribution pipe 2 and the third-level gravity self-balancing water distribution pipe 3 in sequence.

[0065] The water distribution system of the present application is provided with an exhaust pipe 10 on the third-level gravity self-balancing water distribution pipeline 3, which can effectively discharge the bubbles in the water distribution system, such as discharging the bubbles entering the third-level gravity self-balancing water distribution pipeline 3, so as to avoid affecting the smooth flow of water and causing uneven water distribution. The function of the exhaust pipe 10 is to allow these compressed air to be discharged along the exhaust pipe 10, so as to maintain the normal operation of the water distribution system. At the same time, the exhaust pipe 10 is connected to the outside air, so that the second-level gravity self-balancing water distribution pipeline 2, the third-level gravity self-balancing water distribution pipeline 3 and the exhaust pipe 10 form a U-shaped pipe structure, which ensures that the water flow rate and water pressure in the water distribution system are uniform, and the water pressure to each water distribution pipe 8 and the water nozzle 9 is also consistent, and the amount of water sprayed by each water nozzle 9 is equal, so as to achieve the effect of uniform water distribution.

[0066] In some possible embodiments, the exhaust pipe 10 is located at the end of the third-stage gravity self-balancing water distribution pipeline 3 along the length direction. This is conducive to the discharge of bubbles in the entire third-stage gravity self-balancing water distribution pipeline 3. When the third-stage gravity self-balancing water distribution pipeline 3 is unevenly arranged, one end is high and the other end is low. The exhaust pipe 10 of the present application is arranged at the end of the third-stage gravity self-balancing water distribution pipeline 3, located at the highest point, and the bubbles in the third-stage gravity self-balancing water distribution pipeline 3 will naturally move to the end of the third-stage gravity self-balancing water distribution pipeline 3 and finally be discharged from the exhaust pipe 10.

[0067] In some possible implementations, such as Figure 1 As shown, the exhaust pipes 10 are respectively provided at least at both ends of the third-stage gravity self-balancing water distribution pipeline 3. By providing the exhaust pipes 10 at both ends of the third-stage gravity self-balancing water distribution pipeline 3, it is more conducive to the discharge of bubbles. The exhaust pipes 10 at both ends of the third-stage gravity self-balancing water distribution pipeline 3 can allow the compressed air on both sides to be discharged along the exhaust pipes 10, thereby maintaining the normal operation of the water distribution system. And no matter which direction the third-stage gravity self-balancing water distribution pipeline 3 is tilted, the bubbles will be discharged from the corresponding exhaust pipes 10.

[0068] In some possible implementations, the second-stage gravity self-balancing water distribution pipeline 2 is located on the top of the third-stage gravity self-balancing water distribution pipeline 3 , and the second-stage gravity self-balancing water distribution pipeline 2 is parallel to the exhaust pipe 10 .

[0069] The second-stage gravity self-balancing water distribution pipe 2 has an open top. The second-stage gravity self-balancing water distribution pipe 2, the third-stage gravity self-balancing water distribution pipe 3 and the exhaust pipe 10 form a U-shaped pipe structure, which ensures that the water flow rate and water pressure in the water distribution system are uniform, and the water pressure to each water distribution pipe 8 and water nozzle 9 is also consistent. The amount of water sprayed by each water nozzle 9 is equal, achieving the effect of uniform water distribution.

[0070] In some possible implementations, in a direction perpendicular to the horizontal plane, an extension length of the exhaust pipe 10 is equal to an extension length of the second-stage gravity self-balancing water distribution pipe 2 .

[0071] The second-stage gravity self-balancing water distribution pipeline 2, the third-stage gravity self-balancing water distribution pipeline 3 and the exhaust pipe 10 form a U-shaped pipe structure, and the water levels in the second-stage gravity self-balancing water distribution pipeline 2 and the exhaust pipe 10 are consistent. Therefore, the two are as close as possible to avoid the exhaust pipe 10 being too low, and when the water level is too high, water overflows from the exhaust pipe 10.

[0072] In some possible implementations, the diameter of the exhaust pipe 10 is smaller than the diameter of the second-stage gravity self-balancing water distribution pipe 2. The diameter of the exhaust pipe 10 has little effect on the exhaust, so in the embodiment of the present application, the diameter of the exhaust pipe 10 is minimized to reduce the weight of the entire water distribution system.

[0073] In some possible implementation schemes, both ends of the third-stage gravity self-balancing water distribution pipeline 3 are closed along the length direction. Exhaust pipes 10 are provided at both ends of the third-stage gravity self-balancing water distribution pipeline 3, so the closed ends are conducive to the stability of the water pressure in the entire third-stage gravity self-balancing water distribution pipeline 3, ensuring that the water flow rate and water pressure in the third-stage gravity self-balancing water distribution pipeline 3 are uniform, and the water pressure to each water distribution pipe 8 and water nozzle 9 is also consistent, and the amount of water sprayed by each water nozzle 9 is equal, achieving the effect of uniform water distribution.

[0074] In some possible implementation schemes, the gravity self-balancing uniform water distribution system includes a plurality of water distribution pipes 8, each of which is arranged in the third-level gravity self-balancing water distribution pipeline 3, and each of which is arranged in sequence along the length direction of the third-level gravity self-balancing water distribution pipeline 3. A water nozzle 9 is connected to the water distribution pipe 8. Among them, each water distribution pipe 8 can be arranged in the length direction of the third-level gravity self-balancing water distribution pipeline 3, so that the water pressure of each symmetrically arranged water distribution pipe 8 and water nozzle 9 is consistent, and the amount of water sprayed by each water nozzle 9 is roughly equal, so as to achieve the effect of uniform water distribution.

[0075] In some possible implementation schemes, each third-level gravity self-balancing water distribution pipeline 3 is connected to at least two second-level gravity self-balancing water distribution pipelines 2, and each second-level gravity self-balancing water distribution pipeline 2 is symmetrically arranged on the distribution pipeline with the middle part (middle part in the length direction) of the third-level gravity self-balancing water distribution pipeline 3 as the center. Each second-level gravity self-balancing water distribution pipeline 2 is symmetrically arranged on the third-level gravity self-balancing water distribution pipeline 3, so that the water supply paths of each water distribution pipe on the third-level gravity self-balancing water distribution pipeline 3 are roughly the same, the water supply paths of each water distribution pipe are basically consistent, and the amount of water sprayed by each water nozzle 9 on each water distribution pipe 8 is roughly equal, so as to achieve the effect of uniform water distribution.

[0076] Embodiment 3

[0077] like Figure 1 and Figure 2As shown, the embodiment of the present application further describes the water distribution system in detail on the basis of the above-mentioned embodiment 1 and embodiment 2, and the water distribution system includes: a first-stage gravity self-balancing water distribution pipe 1, a pressure relief water retaining component 6 and a second-stage gravity self-balancing water distribution pipe 2. The first-stage gravity self-balancing water distribution pipe 1 extends longitudinally, the bottom of the first-stage gravity self-balancing water distribution pipe 1 has a water inlet, the top of the first-stage gravity self-balancing water distribution pipe 1 has a pressure relief port 11, the pressure relief water retaining component 6 is arranged on the first-stage gravity self-balancing water distribution pipe 1, and covers the cross section of the first-stage gravity self-balancing water distribution pipe 1, the pressure relief water retaining component 6 has an air vent 61, the second-stage gravity self-balancing water distribution pipe 2 is located on the peripheral side of the first-stage gravity self-balancing water distribution pipe 1, and is connected to the outer wall of the first-stage gravity self-balancing water distribution pipe 1, and the second-stage gravity self-balancing water distribution pipe 2 is connected to the first-stage gravity self-balancing water distribution pipe 1.

[0078] A pressure relief port 11 is provided at the top of the first-stage gravity self-balancing water distribution pipe 1 of the water distribution system of the present application, so that the water will automatically release pressure after entering the first-stage gravity self-balancing water distribution pipe 1, and under the action of its own weight, it will evenly flow into the multiple second-stage gravity self-balancing water distribution pipes 2 on the surrounding side for double uniform water distribution, wherein a pressure relief water retaining component 6 is provided on the first-stage gravity self-balancing water distribution pipe 1, and the pressure relief water retaining component 6 has an air hole 61, which does not affect the pressure relief of the incoming water, and the compressed gas can be easily discharged, and the pressure relief water retaining component 6 also serves the purpose of blocking water, thereby preventing the incoming water from being directly discharged from the pressure relief port 11 at the top of the first-stage gravity self-balancing water distribution pipe 1.

[0079] In some possible embodiments, Figure 1 and Figure 2 As shown, the pressure relief water retaining component 6 is arranged in the tube cavity of the first-stage gravity self-balancing water distribution pipe 1. It does not occupy additional external space of the water distribution system, which is conducive to the compact design of the water distribution system. Furthermore, by arranging the pressure relief water retaining component 6 in the tube cavity of the first-stage gravity self-balancing water distribution pipe 1, and having a certain gap from the pressure relief port 11, water can be blocked in advance, and the discharge of the incoming water from the pressure relief port 11 at the top is more effectively avoided. Without considering the occupied space, the pressure relief water retaining component 6 can also be at least partially exposed at the top of the first-stage gravity self-balancing water distribution pipe 1, and cover the pressure relief port 11.

[0080] In some possible implementations, the pressure relief water retaining component 6 is detachably connected to the first-stage gravity self-balancing water distribution pipeline 1. Thus, the pressure relief water retaining component 6 can be easily replaced. The pressure relief water retaining component 6 can be detachably connected to the first-stage gravity self-balancing water distribution pipeline 1 by fasteners, and the pressure relief water retaining component 6 can also be detachably connected to the first-stage gravity self-balancing water distribution pipeline 1 by a clamping structure.

[0081] In some possible implementations, the pressure relief water retaining component 6 is fixedly connected to the first-stage gravity self-balancing water distribution pipeline 1. The pressure relief water retaining component 6 can be fastened to the first-stage gravity self-balancing water distribution pipeline 1 by fasteners. The pressure relief water retaining component 6 can be fixed to the first-stage gravity self-balancing water distribution pipeline 1 by welding or bonding.

[0082] In some possible implementations, the first-stage gravity self-balancing water distribution pipeline 1 is a round tube, the pressure relief water retaining component 6 is a round pancake, the pressure relief water retaining component 6 is located on the inner wall of the first-stage gravity self-balancing water distribution pipeline 1, and the thickness end surface of the circumferential side of the pressure relief water retaining component 6 is attached to the inner wall of the first-stage gravity self-balancing water distribution pipeline 1. A large number of air holes 61 are distributed on the pressure relief water retaining component 6, and the air holes 61 penetrate the pressure relief water retaining component 6 along the thickness direction of the pressure relief water retaining component 6.

[0083] In some possible implementation schemes, the open water distribution system for the cooling tower includes at least two of the pressure relief water retaining components 6, and each of the pressure relief water retaining components 6 is arranged in sequence along the length direction of the first-stage gravity self-balancing water distribution pipe 1. Each of the pressure relief water retaining components 6 can be arranged at intervals. The water retaining effect is further increased by arranging multiple pressure relief water retaining components 6. After the high-speed water flow enters a certain height from the water inlet at the bottom of the first-stage gravity self-balancing water distribution pipe 1, it will be blocked by multiple pressure relief water retaining components 6, so that the water inlet flow rate is reduced, achieving the purpose of rapid pressure relief. After the incoming water passes through a pressure relief water retaining component 6, it will also be blocked by the pressure relief water retaining component 6 of the previous stage. Through the water retaining effect of the multiple-stage pressure relief water retaining components 6, the effect of rapid pressure relief can be achieved.

[0084] In some possible implementations, in an open water distribution system for a cooling tower, at least some of the air holes 61 on two adjacent pressure relief water retaining components 6 are staggered along the length direction of the first-stage gravity self-balancing water distribution pipeline 1. The staggered arrangement of the air holes 61 on the adjacent pressure relief water retaining components 6 can prevent some water from smoothly passing through the air holes 61 on the two pressure relief water retaining components 6 in sequence along the longitudinal direction, thereby resulting in poor pressure relief effect of the pressure relief water retaining components 6.

[0085] In some possible implementation schemes, the side edges of the pressure relief and water retaining component 6 are welded to the inner wall of the first-stage gravity self-balancing water distribution pipeline 1 .

[0086] The inner wall of the first-stage gravity self-balancing water distribution pipe 1 may be provided with a positioning support portion, and the pressure relief water retaining component 6 is supported on the positioning support portion. The support portion plays the role of a limiting support, and assists in the rapid assembly of the pressure relief water retaining component 6. For example, in the process of assembling the pressure relief water retaining component 6, the pressure relief water retaining component 6 is first placed inside the first-stage gravity self-balancing water distribution pipe 1, and horizontally supported on the positioning support portion, and then welding or fastener assembly operations are performed to fix the pressure relief water retaining component 6 to the first-stage gravity self-balancing water distribution pipe 1. It should be noted that the positioning support portion can be an inner convex rib formed by the protrusion of the inner wall of the first-stage gravity self-balancing water distribution pipe 1.

[0087] In some possible implementations, the second-stage gravity self-balancing water distribution pipeline 2 is connected to the first-stage gravity self-balancing water distribution pipeline 1 through a connecting pipe 4, and the pressure relief water retaining component 6 is located between the connecting pipe 4 and the pressure relief port 11 in the height direction.

[0088] The pressure relief water retaining component 6 is located higher than each connecting pipe 4, which can reduce the influence on the water in the first-stage gravity self-balancing water distribution pipeline 1 being diverted to the second-stage gravity self-balancing water distribution pipeline 2. This is conducive to uniform water distribution of the water distribution system.

[0089] Embodiment 4

[0090] Embodiment 4 of the present application provides a cooling tower, including the water distribution system of the above embodiment. Specifically, the water cooling tower may include a tower body, fillers and the above water distribution system, the fillers are arranged on the tower body, the water distribution system is arranged on the tower body and located on the top of the fillers, the water distribution system sprays water on the fillers, increases the contact area and time between water and air, and reduces the water temperature through heat exchange between water and air.

[0091] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0092] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0093] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A gravity self-balancing uniform water distribution system, characterized in that: include: A first-stage gravity self-balancing water distribution pipeline, wherein the first-stage gravity self-balancing water distribution pipeline extends longitudinally, has a water inlet at the bottom, and has a pressure relief port at the top; A plurality of second-stage self-balancing gravity water distribution pipes, each of which is located on the periphery of the first-stage self-balancing gravity water distribution pipe, each of which is connected to the first-stage self-balancing gravity water distribution pipe, and each of which has an open top; A plurality of third-stage self-balancing gravity water distribution pipes, each of which is located at the bottom of a corresponding second-stage self-balancing gravity water distribution pipe and connected to the corresponding second-stage self-balancing gravity water distribution pipe; Wherein, the liquid flows sequentially through the first-stage gravity self-balancing water distribution pipeline, the second-stage gravity self-balancing water distribution pipeline and the third-stage gravity self-balancing water distribution pipeline.

2. The gravity self-balancing uniform water distribution system according to claim 1 is characterized in that: It comprises a plurality of connecting pipes, wherein the diameter of the connecting pipes is smaller than that of the second-stage gravity self-balancing water distribution pipe and the first-stage gravity self-balancing water distribution pipe; Each of the connecting tubes is arranged in sequence along the circumference of the first-stage gravity self-balancing water distribution pipeline, and each of the connecting tubes is located in the same plane. One end of each of the connecting tubes is connected to the first-stage gravity self-balancing water distribution pipeline, and the other end of each of the connecting tubes is connected to the corresponding second-stage gravity self-balancing water distribution pipeline.

3. The gravity self-balancing uniform water distribution system according to claim 1 is characterized in that: Along the circumference of the first-stage gravity self-balancing water distribution pipeline, at least two adjacent second-stage gravity self-balancing water distribution pipelines are connected by a connecting pipe; Wherein, the connecting pipe is connected to the second-stage gravity self-balancing water distribution pipeline at both ends, and the connecting pipe is located between the connecting pipe and the third-stage gravity self-balancing water distribution pipeline.

4. The gravity self-balancing uniform water distribution system according to claim 1, characterized in that: It comprises a pressure relief and water retaining component, which is arranged on the first-stage gravity self-balancing water distribution pipeline and covers the cross section of the first-stage gravity self-balancing water distribution pipeline, and has air holes.

5. The gravity self-balancing uniform water distribution system according to claim 1, characterized in that: Including water inlet main; The outer diameter of the water inlet main pipe is smaller than the outer diameter of the first-stage gravity self-balancing water distribution pipe; The water inlet main pipe is located at the bottom of the first-stage gravity self-balancing water distribution pipeline, and the water inlet main pipe is connected to the water inlet at the bottom of the first-stage gravity self-balancing water distribution pipeline.

6. The gravity self-balancing uniform water distribution system according to claim 1, characterized in that: Each of the third-stage gravity self-balancing water distribution pipes is located in the same plane, and each of the third-stage gravity self-balancing water distribution pipes has the same size and shape; Each third-stage self-balancing gravity water distribution pipeline is respectively connected to the same number of second-stage self-balancing gravity water distribution pipelines, and each second-stage self-balancing gravity water distribution pipeline is symmetrically arranged on the third-stage self-balancing gravity water distribution pipeline.

7. The gravity self-balancing uniform water distribution system according to claim 1, characterized in that: It comprises a plurality of water distribution pipes, each of which is arranged in the third-level gravity self-balancing water distribution pipeline, each of which is arranged in sequence along the length direction of the third-level gravity self-balancing water distribution pipeline, and each of which is connected with a water nozzle; Each of the water distribution pipes is symmetrically arranged on the third-stage gravity self-balancing water distribution pipeline with the middle portion of the third-stage gravity self-balancing water distribution pipeline as the center.

8. The gravity self-balancing uniform water distribution system according to claim 1, characterized in that: It includes an exhaust pipe connected to the end of the third-stage gravity self-balancing water distribution pipeline.

9. The gravity self-balancing uniform water distribution system according to any one of claims 1 to 8, characterized in that: It comprises a plurality of water distribution sub-units, each of which is arranged in a plurality of rows and columns on a horizontal plane; Wherein, each of the water distribution sub-units includes the first-stage gravity self-balancing water distribution pipeline, the second-stage gravity self-balancing water distribution pipeline and the third-stage gravity self-balancing water distribution pipeline.

10. A cooling tower, characterized in that: It comprises a gravity self-balancing uniform water distribution system as described in any one of claims 1 to 9.

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