Water distribution mechanism, water distribution mechanism assembly and cooling tower

Abstract

The invention relates to a water distribution mechanism, a water distribution mechanism assembly and a cooling tower. And the water distribution mechanism comprises a water distribution disc and a double-pipe type water dispersion pipe. The water distribution disc is provided with a plurality of water distribution holes used for distributing cooling water. The double-pipe type water dispersing pipe is horizontally installed on the first side wall and the second side wall, opposite to each other, of the water distributing disc. The double-pipe type water dispersing pipe comprises a water dispersing inner pipe and a water dispersing outer pipe. The water dispersing outer pipe surrounds the water dispersing inner pipe and is spaced from the water dispersing inner pipe. And the tail end of the water dispersing inner pipe is closed. At least one row of inner pipe water outlet holes are formed in the top part of the water dispersing inner pipe, and at least one row of outer pipe water outlet holes are formed in the bottom part of the water dispersing outer pipe, so that cooling water input from the input end of the water dispersing inner pipe overflows from the at least one row of inner pipe water outlet holes and flows into the water dispersing outer pipe; and then the water enters the water distribution disc through the at least one row of outer pipe water outlet holes, so that the uniform water distribution is conveniently realized.

Description

Technical Field

[0001] The present disclosure relates to the field of air conditioning and refrigeration, and more specifically to a water distribution mechanism, a water distribution mechanism assembly and a cooling tower. Background Art

[0002] Cooling towers are key equipment in the field of air conditioning and refrigeration technology. They are mainly used to dissipate the condensation heat of water-cooled refrigeration units to ensure the normal operation of the refrigeration units. In actual engineering practice, the cooling water flow rate is often greater than or less than the rated flow rate of the cooling tower due to design or equipment configuration, which will reduce the cooling efficiency of the cooling tower. The function of the cooling tower water distribution pipe is to evenly sprinkle the cooling water into the water distribution pan. At present, many cold stations use a single pipe to sprinkle cooling water into the water distribution pan. The defect of this method is that the first end of the water distribution pipe first sprinkles water into the water distribution pan and the water flow rate is large, while the water flow rate at the end is small, resulting in inconsistent water distribution from the water distribution pan to the filler and thus uneven distribution. In addition, the strong impact of the water flow caused by centralized water injection will cause excessive fluctuations in the liquid level, which will also increase the unevenness of water distribution. Uneven water distribution will reduce the cooling efficiency of the cooling tower.

[0003] For this purpose, a water distribution mechanism needs to be designed to evenly sprinkle water on the water distribution tray. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a water distribution mechanism, a water distribution mechanism assembly and a cooling tower, so as to at least solve the problem of uneven water distribution.

[0005] In one aspect, a water distribution mechanism is provided. The water distribution mechanism includes a water distribution pan and a double-tube water dispersion pipe. The water distribution pan is provided with a plurality of water distribution holes for distributing cooling water. The double-tube water dispersion pipe is horizontally mounted on the first and second opposite side walls of the water distribution pan. The double-tube water dispersion pipe includes an inner water dispersion pipe and an outer water dispersion pipe. The outer water dispersion pipe is arranged around the inner water dispersion pipe and there is a gap between the two. The end of the inner water dispersion pipe is closed. The inner water dispersion pipe is provided with at least one row of inner tube water outlet holes at the top portion and the outer water dispersion pipe is provided with at least one row of outer tube water outlet holes at the bottom portion, so that the cooling water input from the input end of the inner water dispersion pipe overflows from the at least one row of inner tube water outlet holes and flows into the outer water dispersion pipe, and then enters the water distribution pan through the at least one row of outer tube water outlet holes.

[0006] Since the cooling water overflows only after reaching a certain liquid level in the entire inner water-scattering pipe, it can be ensured that the cooling water is discharged from the inner water-scattering pipe to the outer water-scattering pipe at the same flow rate substantially at the same time over the entire longitudinal length, thereby facilitating water distribution uniformity. Moreover, the cooling water can slowly overflow into the outer water-scattering pipe along the outer surface of the inner water-scattering pipe without causing flow fluctuations, and buffer the flow rate of the cooling water and / or balance the liquid level of the cooling water in the outer water-scattering pipe, which is also conducive to achieving water distribution uniformity.

[0007] In one or more embodiments, the water distribution mechanism further includes a cap tube for closing an end of the water-scattering inner pipe.

[0008] Thus, the inner water-spreading pipe is sealed in a simple manner, so that the double-tube water-spreading pipe can achieve uniform water distribution.

[0009] In one or more embodiments, the at least one row of inner tube water outlet holes includes two rows of inner tube water outlet holes located at the same height relative to the extension center line of the double-tube diffuser, and / or the at least one row of outer tube water outlet holes includes two rows of outer tube water outlet holes located at the same height relative to the extension center line.

[0010] Thus, the arrangement of two rows of inner pipe water outlet holes facilitates more overflow of chilled water from the inner water dispersion pipe from multiple directions and positions, while the arrangement of two rows of outer pipe water outlet holes facilitates more distribution of chilled water from the outer water dispersion pipe from multiple positions.

[0011] In one or more embodiments, the water distribution mechanism further includes a water level adjustment member including a connecting pipe having a first end extending into a lower portion of the water-scattering outer pipe and a second end extending to the outside of the water distribution mechanism.

[0012] Therefore, the water level regulating member facilitates the adjustment or balancing of the liquid level in the lower half of the water-spreading outer pipe of the water distribution mechanism.

[0013] In one or more embodiments, the second end of the connecting tube is sealed by a cap.

[0014] Therefore, when the liquid level in the lower half of the outer water diffuser pipe is too high, the excess cooling water can be discharged by removing the cap.

[0015] In one or more embodiments, the water-scattering outer pipe includes an upper half pipe and a lower half pipe connected together by buckles.

[0016] Therefore, this buckle connection facilitates the removal of the upper half of the outer water dispersion pipe to clean the lower half of the outer water dispersion pipe, and also facilitates the placement of a bracket in the lower half of the outer water dispersion pipe to support the inner water dispersion pipe.

[0017] In one or more embodiments, the inner water-scattering pipe and the lower half of the outer water-scattering pipe are fixed to the first side wall and the second side wall of the water distribution tray via a first connecting member and a second connecting assembly, respectively.

[0018] Therefore, the provision of the first connecting member and the second connecting assembly can facilitate the fixing and disassembly of the inner water-scattering pipe and the lower half of the outer water-scattering pipe.

[0019] In one or more embodiments, the first connecting member includes a flange portion, an outer tube connecting ring and an inner tube connecting ring coaxially extending from the flange portion. The flange portion is fixed to the first side wall by a fastener. The outer tube connecting ring receives and carries the lower half of the water-scattering outer tube. The water-scattering inner tube extends through the annular hole of the inner tube connecting ring.

[0020] Thus, the first connecting member provides sufficient positioning and support for the inner water-scattering pipe and the lower half of the outer water-scattering pipe, and is also convenient for fixing the two to the first side wall of the water distribution tray.

[0021] In one or more embodiments, the second connection assembly includes a support ring, a flange and a sealing plate. The support ring is sleeved in the flange to receive and carry the lower half of the outer water dispersion pipe. The sealing plate is arranged against the flange. The central hole of the sealing plate holds the inner water dispersion pipe. The fastener extends through the fixing holes of the flange and the sealing plate and is fixed to the second side wall.

[0022] Thus, the second connecting assembly facilitates to firmly fix the inner water-scattering pipe and the lower half of the outer water-scattering pipe to the second side wall of the water distribution tray.

[0023] In one or more embodiments, the flange includes a central hole with a stepped portion. The support ring includes a ring body and a flange portion. The support ring is configured such that when installed, the ring body extends through the central hole to support the lower half of the outer water-scattering pipe and the flange portion abuts the stepped portion.

[0024] Thus, the structure and arrangement of the support ring and the flange facilitate receiving and holding the inner water-scattering pipe and the lower half of the outer water-scattering pipe in a flexible matching assembly manner, making installation and disassembly more flexible.

[0025] In one or more embodiments, the water distribution mechanism includes a sealing component. The sealing component includes a first sealing component arranged between the first connecting member and the first side wall, a second sealing component arranged between the flange and the sealing plate, and / or a third sealing component arranged between the sealing plate and the second side wall.

[0026] Therefore, it is convenient to seal and fix the inner water-spreading pipe and the lower half of the outer water-spreading pipe to the first side wall and the second side wall of the water distribution tray.

[0027] In one or more embodiments, the water distribution mechanism includes at least one bracket, and the at least one bracket is placed in the lower half of the water-scattering outer pipe to support the water-scattering inner pipe.

[0028] Thus, the bracket provides sufficient support for the inner water-scattering pipe to prevent the inner water-scattering pipe from sagging when the span is large.

[0029] In one or more embodiments, the at least one bracket includes a plurality of brackets, each bracket having a first abutment portion and a second abutment portion. The first abutment portion has an inner tube abutment surface complementary to the outer surface shape of the water-scattering inner tube. The second abutment portion has an outer tube abutment surface complementary to the inner surface shape of the lower half of the water-scattering outer tube.

[0030] Thus, the bracket provides support for the inner water-scattering pipe in a simple form-fitting manner.

[0031] In one or more embodiments, at least one support member for holding the water-scattering outer pipe is provided in the water distribution tray.

[0032] Thus, the support member provides sufficient support for the water-scattering outer pipe to prevent the water-scattering outer pipe from sagging when the span is large.

[0033] In one or more embodiments, the support member includes an abutting surface having a shape complementary to that of an outer surface of the water-scattering outer pipe and a plane surface disposed against an upper surface of the water distribution tray.

[0034] Thus, the support element provides support for the outer water-scattering pipe in a simple form-fitting manner.

[0035] On the other hand, the present disclosure provides a water distribution mechanism assembly. The water distribution mechanism assembly includes at least two water distribution mechanisms according to the present disclosure. The water dispersion inner pipe runs through the first wall and the second side wall of all water distribution mechanisms and extends to the second side wall of the last water distribution mechanism, and the end of the water dispersion inner pipe is sealed by a cap tube.

[0036] Therefore, the water distribution mechanism assembly facilitates achieving uniform water distribution over a large span.

[0037] In one or more embodiments, each of the water distribution mechanisms has a water level adjustment member installed at the lower portion of the water-scattering outer pipe. The water level adjustment member has a connecting pipe. The second ends of the connecting pipes of adjacent water distribution mechanisms extending to the outside of the water distribution mechanisms are connected by a connecting ring to communicate with the adjacent water distribution mechanisms.

[0038] Therefore, the provision of the water level regulating member facilitates balancing the liquid levels in the water-spreading outer pipes of adjacent water distribution mechanisms.

[0039] In one or more embodiments, the second end of the connecting pipe of the water level regulating member of the last water distribution mechanism is sealed by a cap.

[0040] Therefore, it is convenient to remove the cap to discharge excess cooling water to adjust the liquid level in the water-spreading outer pipe of the water distribution mechanism.

[0041] In one or more embodiments, the water level adjusting member is configured to extend through a first connecting member and a second connecting assembly for fixing the double-tube water diffusion pipe to a first side wall and a second side wall of the water distribution tray and enter the water diffusion outer pipe.

[0042] Thus, the water level adjusting element is arranged in a simple manner, thereby adjusting and balancing the liquid level in the water-scattering outer pipe.

[0043] In yet another aspect, the present disclosure provides a cooling tower, comprising the water distribution mechanism according to the present disclosure or the water distribution mechanism assembly according to the present disclosure.

[0044] As a result, the cooling tower can evenly distribute water to the fill. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present disclosure will be more easily understood by the following detailed description in conjunction with the accompanying drawings, in which the same reference numerals represent the same elements. The accompanying drawings are schematic and non-restrictive. The elements in the accompanying drawings are not necessarily represented to scale. For example, the elements may be enlarged for the purpose of illustration, or may be reduced in scale to keep the drawings clear and easy to understand. In the accompanying drawings:

[0046] Figure 1 A perspective view schematically shows a water distribution mechanism according to the present disclosure;

[0047] Figure 2 Schematically shows a cutaway perspective view of a water distribution mechanism according to the present disclosure;

[0048] Figure 3 Schematically shows a detailed view of a portion of a water distribution mechanism according to the present disclosure;

[0049] Figure 4 A perspective view schematically shows a water distribution mechanism assembly according to the present disclosure;

[0050] Figure 5 A cross-sectional perspective view schematically shows a portion of a water distribution mechanism assembly according to the present disclosure;

[0051] Figure 6 Schematically shows details of a portion of a water distribution mechanism assembly according to the present disclosure;

[0052] Figure 7 A perspective view schematically shows a first connecting member of a water distribution mechanism according to the present disclosure;

[0053] Figure 8 A perspective view schematically showing a bracket of a water distribution mechanism according to the present disclosure; and

[0054] Fig. 9 A three-dimensional view of a water-scattering outer pipe of a water distribution mechanism according to the present disclosure is schematically shown. Description of Reference Numerals

[0055] Water distribution mechanism 100; water distribution tray 1; first side wall 11; second side wall 12; double-tube water dispersion pipe 2; water dispersion inner pipe 21; inner pipe water outlet hole 211; water dispersion outer pipe upper half pipe 22; outer pipe water outlet hole 221; lower half pipe clamping portion 222; water dispersion outer pipe lower half pipe 23; upper half pipe clamping portion 232; second connecting assembly 3; support ring 31; flange portion 311; ring body 312; flange 32; step portion 321; sealing plate 33; first connecting member 4; flange portion 41; outer pipe connecting ring 42; inner pipe connecting ring 43; ring hole 44; mounting hole 45; water level regulating member 5; connecting pipe 51; cap 52; connecting ring 53; cap tube 9; sealing component 6; first sealing member 63; second sealing member 61; third sealing member 62; bracket 7; first abutting portion 71; second abutting portion 72; bracket connecting portion 73; supporting member 8. DETAILED DESCRIPTION

[0056] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings show several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below. The embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should be understood that in all the drawings, the same reference numerals represent the same elements.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present disclosure. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The terms "including" and "having" and any derivatives thereof in the specification and claims of the present disclosure are intended to cover non-exclusive inclusions.

[0058] The terms "part," "element," "member" and the like can have the dual meaning of a single part or a plurality of parts.

[0059] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. are only used to distinguish different objects, and should not be understood as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features. In addition, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0060] In the description of the embodiments of the present disclosure, “plurality” means more than two, unless explicitly defined otherwise.

[0061] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0062] In the description of the embodiments of the present disclosure, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0063] In the description of the embodiments of the present disclosure, the terms "horizontal", "vertical", "up", "down", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0064] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "installation", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected 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 embodiments of the present disclosure can be understood according to specific circumstances.

[0065] In the water distribution mechanism of the prior art, the water dispersion pipe usually adopts a single-tube water dispersion pipe for water dispersion. When dispersing water, after the cooling water enters the water dispersion pipe, the cooling water first enters the front end of the water dispersion pipe, so the head end of the water dispersion pipe first sprays the cooling water into the water distribution tray. As the cooling water flows to the end of the water dispersion pipe, the end of the water dispersion pipe does not start to spray the cooling water into the water distribution tray until the water dispersion pipe is filled with cooling water. Therefore, the uniformity of water distribution from the water distribution tray to the packing is poor. In addition, after the cooling water fills the water dispersion pipe, the flow rate of the cooling water at the water outlet at the front end of the water dispersion pipe is larger, resulting in a large amount of spraying from the front end of the water dispersion pipe, which makes the water distribution from the water distribution tray to the packing uneven, and the large flow rate is also easy to cause flow fluctuations. Especially when distributing water over a large span, the problem of uneven water distribution from the water dispersion pipe to the water distribution tray is more serious. Uneven water distribution will affect the overall thermal performance of the cooling tower.

[0066] To this end, the present disclosure provides a water distribution mechanism to solve the above-mentioned problem of uneven water distribution. The inventive concept of the present disclosure is to provide a double-tube water-spraying pipe, which includes a water-spraying inner pipe and a water-spraying outer pipe that are sheathed together. The end of the water-spraying inner pipe is closed. The water-spraying inner pipe is provided with at least one row of inner pipe water outlet holes at the top portion, and the water-spraying outer pipe is provided with at least one row of outer pipe water outlet holes at the bottom portion. After the cooling water reaches a certain liquid level in the entire water-spraying inner pipe, the cooling water overflows into the water-spraying outer pipe through the inner pipe water outlet holes along the outer surface of the water-spraying inner pipe, and then enters the water distribution tray through the outer pipe water outlet holes of the water-spraying outer pipe for water replenishment. Since the cooling water overflows after reaching a certain liquid level in the entire water-spraying inner pipe, it can be ensured that the cooling water flowing out of the water-spraying inner pipe is discharged at the same flow rate substantially at the same time over the entire longitudinal length of the double-tube water-spraying pipe, so that the water distribution is uniform. The cooling water slowly overflows into the outer water diffuser pipe along the outer surface of the inner water diffuser pipe without causing flow fluctuations and buffering the flow rate of the cooling water and / or balancing the liquid level of the cooling water in the outer water diffuser pipe, which is also conducive to achieving uniform water distribution.

[0067] refer to Figure 1-3 , which schematically shows various views of the water distribution mechanism according to the present disclosure. Figure 1-3 The water distribution mechanism 100 shown is a one-stage water distribution mechanism, which may include a water distribution pan 1 and a double-tube water dispersing pipe 2. A plurality of water distribution holes for dispersing cooling water are provided at the bottom of the water distribution pan 1. The layout of the water distribution holes is designed according to actual needs, for example, they may be arranged completely evenly, evenly arranged in sections, or arranged progressively, etc. The water distribution pan 1 includes a first side wall 11 and a second side wall 12 arranged opposite to each other.

[0068] refer to Figure 1-3 The double-tube water-spreading pipe 2 is substantially horizontally mounted on the first side wall 11 and the second side wall 12 of the water-distributing tray 1. The double-tube water-spreading pipe 2 may include an inner water-spreading pipe 21 and an outer water-spreading pipe. The end of the inner water-spreading pipe 21 is closed. The outer water-spreading pipe is arranged around the inner water-spreading pipe 21 with a certain interval therebetween. The inner water-spreading pipe 21 is provided with at least one row of inner water-spreading pipe outlet holes 211 at the top portion and the outer water-spreading pipe is provided with at least one row of outer water-spreading pipe outlet holes 221 at the bottom portion, so that the cooling water input from the input end of the inner water-spreading pipe 21 overflows from at least one row of inner water-spreading pipe outlet holes 211 and flows through at least one row of outer water-spreading pipe outlet holes 221 into the water-distributing tray 1.

[0069] The cooling water overflowing from at least one row of inner tube water outlet holes slowly flows along the outer surface of the inner water diffuser tube into the outer water diffuser tube, so that the cooling water is evenly and gently distributed to the lower part of the outer water diffuser tube, without causing the water flow in the outer water diffuser tube to flow longitudinally, and without causing the water surface inside the outer water diffuser tube to fluctuate violently, thereby facilitating the realization of uniform water distribution.

[0070] The outer water-scattering pipe and the inner water-scattering pipe are arranged separately to provide a certain storage space for storing cooling water, so as to buffer flow fluctuations and balance the liquid level in the outer water-scattering pipe, thereby facilitating water distribution consistency.

[0071] Thus, compared with the water distribution mechanism with a single-tube water-spreading pipe in the prior art, the water distribution mechanism with a double-tube water-spreading pipe according to the present disclosure can ensure that the cooling water flowing out of the inner water-spreading pipe is discharged at the same flow rate substantially at the same time over the entire longitudinal length of the double-tube water-spreading pipe, thereby achieving consistency in water distribution from beginning to end. The cooling water slowly overflows into the outer water-spreading pipe without causing flow fluctuations and buffers the flow rate of the cooling water and / or balances the liquid level of the cooling water in the outer water-spreading pipe, thereby facilitating water distribution uniformity. Thus, the problem of uneven water distribution of the single-tube water-spreading pipe in the prior art is solved.

[0072] The double-tube water-spreading pipe has an extension centerline and a vertical plane containing the extension centerline. The cross-sections of the inner water-spreading pipe 21 and the outer water-spreading pipe are not limited to the circular cross-sections shown in the drawings, but can be any desired shape as long as they are in a spaced-apart nesting relationship.

[0073] The at least one row of inner tube water outlet holes 211 and the at least one row of outer tube water outlet holes 221 are evenly distributed in a direction parallel to the extension center line of the double-tube diffuser. The at least one row of inner tube water outlet holes includes two rows of inner tube water outlet holes at the same height relative to the extension center line, and / or the at least one row of outer tube water outlet holes includes two rows of outer tube water outlet holes at the same height relative to the extension center line.

[0074] exist Figure 1-3 In the example shown, at least one row of inner tube water outlet holes 211 includes two rows of inner tube water outlet holes symmetrically arranged at the top portion of the water-scattering inner tube with respect to a vertical plane. The arrangement of the two rows of inner tube water outlet holes facilitates more overflow of chilled water from the water-scattering inner tube from multiple directions and positions. At least one row of outer tube water outlet holes 221 includes two rows of outer tube water outlet holes symmetrically arranged in the lower portion of the water-scattering outer tube with respect to a vertical plane. The arrangement of the two rows of outer tube water outlet holes facilitates more distribution of chilled water from the water-scattering outer tube from multiple positions.

[0075] refer to Figure 3 The water distribution mechanism 100 may further include a cap tube 9 that seals the end of the inner water dispersion tube 21. Since the end of the inner water dispersion tube 21 is sealed and at least one row of inner water dispersion holes is arranged at the top portion, the cooling water can quickly reach a certain liquid level in the entire inner water dispersion tube before overflowing into the outer water dispersion tube, and then the cooling water flows through at least one row of outer water dispersion holes 221 that are evenly arranged into the water distribution tray. In this way, the double-tube water dispersion tube ensures that the cooling water flowing out of the inner water dispersion tube flows into the outer water dispersion tube at the same flow rate at substantially the same time over the entire length of the double-tube water dispersion tube without causing drastic flow fluctuations, thereby achieving uniform water distribution.

[0076] In the example of the present disclosure, the water-dispersing outer pipe is in the form of a two-piece pipe, which may include a water-dispersing outer pipe lower half pipe 22 and a water-dispersing outer pipe upper half pipe 23 connected together by snaps. Two rows of outer pipe water outlet holes may be symmetrically arranged at the lower part of the water-dispersing outer pipe lower half pipe 22 about the vertical plane.

[0077] refer to Fig. 9 The lower half pipe 22 of the water-spreading outer pipe has a lower half pipe clamping portion 222 and the upper half pipe 23 of the water-spreading outer pipe has an upper half pipe clamping portion 232. The lower half pipe 22 of the water-spreading outer pipe and the lower half pipe clamping portion 222 and the upper half pipe clamping portion 232 of the water-spreading outer pipe upper half pipe 23 are connected together by buckling. This buckling connection facilitates the removal of the upper half pipe 23 of the water-spreading outer pipe to clean the lower half pipe 22 of the water-spreading outer pipe. Thus, the problem that the inside of the water distribution pipe is difficult to clean is solved.

[0078] Alternatively, in an example not shown, the outer water-scattering pipe may also be an integrated pipe, which is directly sleeved on the outer side of the inner water-scattering pipe 21 .

[0079] refer to Figure 2-3 The water distribution mechanism 100 further includes a water level adjustment member 5 for adjusting or balancing the liquid level in the lower half of the outer water dispersion pipe of the water distribution mechanism. The water level adjustment member 5 includes a connecting pipe 51 having a first end extending into the lower half of the outer water dispersion pipe 22 and a second end extending outside the water distribution mechanism 100.

[0080] The first end of the connecting pipe 51 may have a pointed end to facilitate insertion into the lower half pipe 22 of the outer water diffuser. The second end of the connecting pipe 51 is cylindrical and sealed by a cap 52. When the liquid level in the lower half pipe 22 of the outer water diffuser is too high, the cap 52 may be removed to discharge excess cooling water.

[0081] In addition, the second ends of the connecting pipes of the water level regulating members 5 of two adjacent water distribution mechanisms can be connected via a connecting ring 53 to adjust the liquid level balance in the water-spreading outer pipes of the two water distribution mechanisms, thereby facilitating water distribution uniformity.

[0082] refer to Figure 2 The inner water pipe 21 and the lower half of the outer water pipe 22 can be fixed to the first side wall 11 and the second side wall 12 of the water distribution tray 1 via the first connecting member 4 and the second connecting assembly 3, respectively. In this way, the inner water pipe 21 and the lower half of the outer water pipe 22 can be easily fixed and removed.

[0083] The upper half pipe 23 of the water-scattering outer pipe is directly snap-connected to the lower half pipe 22 of the water-scattering outer pipe, and has no connection relationship with the first connecting member 4 and the second connecting assembly 3, so that the lower half pipe 22 of the water-scattering outer pipe can be cleaned when only the upper half pipe 23 of the water-scattering outer pipe is removed without removing other components.

[0084] refer to Figure 7, the first connecting member 4 may include a flange portion 41, an outer tube connecting ring 42 and an inner tube connecting ring 43 extending coaxially from the flange portion. The flange portion 41 may be fixed to the first side wall 11 by a fastener passing through the mounting hole 45. The outer tube connecting ring 42 is cylindrical and can receive and carry the lower half pipe 22 of the outer tube of the scattered water. In other words, the first end of the lower half pipe 22 of the outer tube of the scattered water is inserted into the outer tube connecting ring 42. The inner tube 21 of the scattered water can extend through the annular hole 44 of the inner tube connecting ring 43, so as to be firmly held. The water distribution mechanism 100 can prevent cooling water leakage and loose connection by a sealing component 6. The sealing component 6 may include a first sealing member 63 arranged between the first connecting member 4 and the first side wall 11 to prevent cooling water leakage and loose connection.

[0085] In this way, the first connecting member 4 provides sufficient positioning and support for the inner water dispersion pipe 21 and the lower half of the outer water dispersion pipe 22 , and is also convenient for sealingly fixing the inner water dispersion pipe 21 and the lower half of the outer water dispersion pipe 22 to the first side wall 11 of the water distribution tray 1 .

[0086] refer to Figure 3 , the second connection assembly 3 includes a support ring 31, a flange 32, and a sealing plate 33 disposed against the flange 32. The support ring 31 can be mounted in the flange 32 to receive and carry the lower half pipe 22 of the water dispersion outer pipe. The flange 32 is fixed to the second side wall 12 by a fastener. The center hole of the sealing plate 33 is used to hold the water dispersion inner pipe 21. The fastener extends through the fixing holes of the flange and the sealing plate and is fixed to the second side wall 12. Thus, the second connection assembly 3 facilitates the stable fixing of the water dispersion inner pipe 21 and the lower half pipe 22 of the water dispersion outer pipe to the second side wall 12 of the water distribution tray 1. The flange 32 includes a center hole with a stepped portion 321. The support ring 31 includes a ring body 312 and a flange portion 311. The support ring 31 is configured so that when installed, the ring body 312 extends through the center hole to hold the lower half pipe 22 of the water dispersion outer pipe and the flange portion 311 abuts the stepped portion 321. In the case of a one-stage water distribution mechanism, the end of the inner water dispersion pipe 21 is fitted with a cap tube 9 and then held in place by the central hole of the sealing plate 33. The structure and arrangement of the support ring and the flange facilitate receiving and supporting the inner water dispersion pipe 21 and the lower half pipe 22 of the outer water dispersion pipe in a flexible matching assembly manner, making installation and disassembly more flexible.

[0087] See also Figure 6 The sealing component 6 may further include a second sealing member 61 disposed between the flange 32 and the sealing plate 33 and / or a third sealing member 62 disposed between the sealing plate 33 and the second side wall 12 to prevent cooling water leakage and loose connection.

[0088] refer to Figure 3The second connection assembly 3 may further include a through hole allowing the water level adjustment member 5 to extend through. Specifically, the sealing plate 33 has a through hole allowing the first end of the connecting pipe 51 of the water level adjustment member 5 to pass through, so that the first end extends to the space between the inner water dispersion pipe 21 and the lower half pipe 22 of the outer water dispersion pipe, so as to realize liquid level adjustment.

[0089] refer to Figure 2 The water distribution mechanism 100 may include at least one bracket, which is placed in the lower half pipe 22 of the outer water dispersion pipe to support the inner water dispersion pipe 21. In this way, sufficient support can be provided for the inner water dispersion pipe to prevent the inner water dispersion pipe from sagging when the span is large.

[0090] Since the water-spraying outer pipe comprises a two-piece water-spraying outer pipe lower half pipe 22 and a water-spraying outer pipe upper half pipe 23, it is also convenient to assemble a double-tube water-spraying pipe. That is, firstly, the bracket 7 is placed in the water-spraying outer pipe lower half pipe 22 to support the water-spraying inner pipe 21, and then the water-spraying outer pipe upper half pipe 23 is connected by snapping.

[0091] At least one bracket includes a plurality of brackets 7. Figure 2 In the example shown, there are two brackets 7. More or fewer brackets may be provided as required. Figure 8 Each bracket has a first abutment portion 71 and a second abutment portion 72. The first abutment portion 71 has an inner tube abutment surface that is complementary in shape to the outer surface of the water-scattering inner tube 21. The second abutment portion 72 has an outer tube abutment surface that is complementary in shape to the inner surface of the lower half of the water-scattering outer tube 22. In this way, the bracket can directly place the lower half of the water-scattering outer tube 22 in a form-fitting manner and firmly support the water-scattering inner tube 21 without the need for additional positioning members or accessories. In other words, the bracket provides support for the water-scattering inner tube in a simple form-fitting manner.

[0092] The bracket connecting portion 7 can connect the first abutting portion 71 and the second abutting portion 72 together. Figure 8 In the example shown, the bracket connecting portion 7 is a plane surface parallel to the horizontal plane. The first abutting portion 71 and the second abutting portion 72 are also connected on one side by an arc-shaped connecting plate. In an example not shown, the bracket connecting portion 7 can be a plane surface inclined relative to the horizontal plane. The first abutting portion 71 and the second abutting portion 72 can be connected on both sides by an arc-shaped connecting plate.

[0093] At least one support member 8 for holding the lower half of the outer water dispersion pipe 22 may be provided in the water distribution tray 1. The support member provides sufficient support for the outer water dispersion pipe to prevent the outer water dispersion pipe from sagging when the span is large. Figure 2In the example shown, two support members 8 are shown. The support member 8 includes an abutment surface complementary to the outer surface shape of the lower half pipe 22 of the water dispersion outer pipe and a plane surface disposed against the upper surface of the water distribution tray 1. In this way, the support member provides support for the lower half pipe 22 of the water dispersion outer pipe in a simple form-fitting manner.

[0094] The present disclosure also provides a water distribution mechanism assembly for the case of larger span water distribution. This water distribution mechanism assembly includes at least two one-stage water distribution mechanisms according to the present disclosure. The at least two water distribution mechanisms can be arranged in series adjacent to each other. Specifically, the water dispersion inner pipe 21 passes through the first wall 11 and the second side wall 12 of all water distribution mechanisms 100 and extends to the second side wall 12 of the last water distribution mechanism and is sealed by the cap tube 9. In this way, the water distribution mechanism assembly facilitates the uniformity of large span water distribution.

[0095] Figure 4-6 The water distribution mechanism assembly shown includes two one-stage water distribution mechanisms according to the above disclosure, that is, a two-stage water distribution mechanism is formed. In an example not shown, the water distribution mechanism assembly can be a water distribution mechanism with more stages.

[0096] refer to Figure 5-6 Each of the water distribution mechanisms may have a water level regulating member 5 installed at the lower part of the water dispersion outer pipe. The water level regulating member has a connecting pipe 51. The second ends of the connecting pipes 51 of adjacent water distribution mechanisms extending to the outside of the water distribution mechanisms are connected by a connecting ring 53 to communicate with the adjacent water distribution mechanisms. The second end of the connecting pipe 51 of the water level regulating member of the last water distribution mechanism is sealed by a cap 52. The provision of the water level regulating member facilitates balancing the liquid levels in the water dispersion outer pipes of adjacent water distribution mechanisms.

[0097] The water level adjusting member 5 may be configured to extend through the first connecting member 4 and the second connecting member 3 for fixing the double-tube water spreading pipe 2 to the first side wall 11 and the second side wall 12 of the water distribution tray 1. Thus, the water level adjusting member is arranged in a simple manner to adjust and balance the liquid level in the water spreading outer pipe.

[0098] refer to Figure 5-6 , the water level regulating member 5 of the first water distribution mechanism extends through the second connection assembly 3, more specifically, the through hole extending through the sealing plate 33 of the second connection assembly 3 extends into the lower part of the water dispersion outer pipe (specifically, the lower half pipe 22 of the water dispersion outer pipe). A water level regulating member 5 of the second water distribution mechanism can extend through the through hole in the first connection member 4, and its second end is connected to the second end of the water level regulating member 5 of the first water distribution mechanism through a connecting ring 53, thereby connecting the first water distribution mechanism and the second water distribution mechanism. In this way, the water dispersion outer pipes of the first water distribution mechanism and the second water distribution mechanism can be adjusted to maintain the same liquid level through the two connected water level regulating members 5.

[0099] Another water level regulating member 5 of the second water distribution mechanism can extend through the through hole in the second connection assembly 3, and its first end extends through the through hole of the sealing plate 33 of the second connection assembly 3 of the second water distribution mechanism to extend into the lower part of the water dispersion outer pipe (specifically, the lower half pipe 22 of the water dispersion outer pipe), and the second end extends to the outside of the second water distribution mechanism and is sealed by the cap 52. The provision of the other water level regulating member facilitates the adjustment of the liquid level in the water dispersion outer pipe of the water distribution mechanism by removing the cap to discharge excess cooling water.

[0100] The following describes the installation method of a one-piece water distribution mechanism with a two-piece water dispersion outer pipe. The water dispersion inner pipe 21 and the lower half pipe 22 of the water dispersion outer pipe are respectively inserted into the outer pipe connecting ring 42 and the inner pipe connecting ring 43 of the first connecting member 4 to be installed on the first connecting member 4, and then sealedly fixed to the first side wall 11 of the water distribution tray 1 by means of the first connecting member 4 and the first sealing member 61; the lower half pipe 22 of the water dispersion outer pipe is placed on the support member 9 placed in the water distribution tray 1; then the bracket 7 is placed in the lower half pipe 22 of the water dispersion outer pipe to support the water dispersion inner pipe 21; the end of the water dispersion inner pipe 21 is closed with a cap tube 9; the support ring 3 is fixed to the first side wall 11 of the water distribution tray ... fixed to the first side wall 11 of the water distribution tray 1; the lower half pipe 22 of the water dispersion outer pipe is fixed to the first side wall 11 of the water distribution tray 1; the lower half pipe 22 of the water dispersion outer pipe is placed on the support member 9 placed in the water distribution tray 1; then the bracket 7 is placed in the lower half pipe 22 of the water dispersion outer pipe to support the water dispersion inner pipe 21; the end of the water dispersion inner pipe 21 is closed with a cap tube 9; the support ring 3 is fixed to the first side wall 11 of the water distribution tray 1; the lower half pipe 22 of the water dispersion 1 is put into the flange 11 and put into the cap 9 together, then the second sealing member 61, the sealing plate 33 and the third sealing member 63 are put into the cap 9 together and abut the flange 11, and then fixed to the second side wall 12 by means of the flange 11 through the fasteners; the upper half pipe 23 of the water-spreading outer pipe is installed on the lower half pipe 5 of the water-spreading outer pipe through the snap connection; the first end of the tip of the water level regulating member 5 passes through the through hole of the sealing plate 33 and extends into the lower half pipe 22 of the water-spreading outer pipe, and the second end located outside the water distribution mechanism is sealed by the cap 52. The above installation order can be changed according to actual needs.

[0101] like Figure 5-6 As shown, the installation method of the water distribution mechanism assembly of the two-stage water distribution mechanism (i.e., including the first water distribution mechanism and the second water distribution mechanism) is as follows. Its installation method is basically similar to the one-stage water distribution mechanism, except that the water dispersion inner pipe 21 runs through the first water distribution mechanism and the second water distribution mechanism, and the second water distribution mechanism also includes another water level adjustment member extending through the first connecting member 4, and the second end of the other water level adjustment member is connected to the connecting pipe 14 and the second end of the water level adjustment member of the first water distribution mechanism by a connecting ring 17, so as to balance the liquid level of the first water distribution mechanism and the second water distribution mechanism. Similar installation arrangements will not be described in detail.

[0102] When using a one-stage water distribution mechanism to distribute water, the flow path of the cooling water is as follows. Figure 2, cooling water (for example, from a cooling tower) is introduced into the double-tube water diffuser (as shown by the arrow), and the cooling water first enters the inner water diffuser tube 21, flows to the closed end of the inner water diffuser tube 21, and the water level in the inner water diffuser tube 21 gradually rises but does not flow out immediately, until the liquid level rises to the two rows of inner water diffuser tube outlet holes 211 set at the top part of the inner water diffuser tube 21, the cooling water will overflow from the two rows of inner water diffuser tube outlet holes 211, and slowly flow into the lower half of the outer water diffuser tube 22 along the outer surface of the inner water diffuser tube 21 without causing violent flow fluctuations, and then the cooling water is evenly distributed to the water distribution tray 1 from the two rows of outer water diffuser tube outlet holes 221 at the bottom part of the lower half of the outer water diffuser tube 22. In this way, the cooling water can enter the water distribution tray 1 uniformly, without fluctuations, and be sprayed into the filler through the nozzle at the bottom of the water distribution tray 1, thereby achieving uniform water distribution.

[0103] When the two-stage water distribution mechanism is used for water distribution, since the water dispersion inner pipe 21 passes through the first water distribution mechanism and the second water distribution mechanism, the cooling water flowing into the double-tube water dispersion pipe first enters the water dispersion inner pipe 21 of the first water distribution mechanism and then flows through the water dispersion inner pipe 21 of the second water distribution mechanism to reach the closed end of the water dispersion inner pipe 21 of the second water distribution mechanism. When the water levels in the water dispersion inner pipes 21 of the first water distribution mechanism and the second water distribution mechanism gradually rise to the two rows of inner pipe water outlet holes 211 at the top part of the water dispersion inner pipe 21, the cooling water will overflow from the two rows of inner pipe water outlet holes 211 and slowly flow into the lower half pipe 22 of the water dispersion outer pipe along the outer surface of the water dispersion inner pipe 21 without causing violent flow fluctuations. Then, the cooling water is evenly distributed to the water distribution tray 1 from the two rows of outer pipe water outlet holes 221 at the bottom part of the lower half pipe 22 of the water dispersion outer pipe. Since the water level adjusting member 5 of the first water distribution mechanism and the second water distribution mechanism connected by the connecting ring 17 can balance the water level in the outer water distribution pipe, the cooling water received by the lower half pipe 22 of the outer water distribution pipe undergoes a water level balancing process, so that the cooling water can be evenly distributed in the water distribution pan in the longitudinal extension direction of the two water distribution mechanisms even when the water is distributed over a large span. In this way, the cooling water can enter the water distribution pan 1 uniformly, without fluctuation, and evenly, and be sprayed into the filler through the nozzle at the bottom of the water distribution pan 1.

[0104] In addition, the present disclosure also provides a cooling tower, which includes the water distribution mechanism according to the present disclosure or includes the water distribution mechanism assembly according to the present disclosure. In this way, the cooling tower can evenly distribute water to the filler.

[0105] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A water distribution mechanism, comprising: A water distribution tray, wherein the water distribution tray is provided with a plurality of water distribution holes for distributing cooling water; A double-tube water-spreading pipe, wherein the double-tube water-spreading pipe is horizontally installed on the first side wall and the second side wall opposite to the water-distributing tray; The double-tube water diffuser comprises an inner water diffuser and an outer water diffuser, the outer water diffuser is arranged around the inner water diffuser with a gap therebetween, the end of the inner water diffuser is closed, the inner water diffuser is provided with at least one row of inner water outlet holes at the top portion and the outer water diffuser is provided with at least one row of outer water outlet holes at the bottom portion, so that the cooling water input from the input end of the inner water diffuser overflows from the at least one row of inner water outlet holes and flows into the outer water diffuser, and then enters the water distribution tray through the at least one row of outer water outlet holes.

2. The water distribution mechanism according to claim 1, wherein: The water distribution mechanism also includes a cap tube that closes the end of the water-scattering inner pipe.

3. The water distribution mechanism according to claim 1 or 2, wherein: The at least one row of inner tube water outlet holes includes two rows of inner tube water outlet holes located at the same height relative to the extension center line of the double-tube diffuser, and / or the at least one row of outer tube water outlet holes includes two rows of outer tube water outlet holes located at the same height relative to the extension center line.

4. The water distribution mechanism according to any one of claims 1 to 3, wherein: The water distribution mechanism further includes a water level regulating member including a connecting pipe having a first end extending into a lower portion of the water-scattering outer pipe and a second end extending to the outside of the water distribution mechanism.

5. The water distribution mechanism according to claim 4, wherein: The second end of the connecting pipe is sealed by a cap.

6. The water distribution mechanism according to any one of claims 1 to 5, wherein: The water-scattering outer pipe comprises an upper half pipe and a lower half pipe which are connected together by buckles.

7. The water distribution mechanism according to claim 6, wherein: The inner water-spreading pipe and the lower half of the outer water-spreading pipe are fixed to the first side wall and the second side wall of the water distribution tray via a first connecting member and a second connecting assembly, respectively.

8. The water distribution mechanism according to claim 7, wherein: The first connecting member includes a flange portion, an outer pipe connecting ring and an inner pipe connecting ring coaxially extending from the flange portion, the flange portion is fixed to the first side wall by a fastener, the outer pipe connecting ring receives and carries the lower half pipe of the water-scattering outer pipe, and the water-scattering inner pipe extends through the ring hole of the inner pipe connecting ring.

9. The water distribution mechanism according to claim 7 or 8, wherein: The second connection assembly includes a support ring, a flange and a sealing plate. The support ring is sleeved in the flange to receive and carry the lower half of the water-scattering outer pipe. The sealing plate is arranged against the flange. The central hole of the sealing plate holds the water-scattering inner pipe. The fasteners extend through the fixing holes of the flange and the sealing plate to be fixed to the second side wall.

10. The water distribution mechanism according to claim 9, wherein: The flange includes a central hole with a stepped portion, the support ring includes a ring body and a flange portion, and the support ring is configured such that when installed, the ring body extends through the central hole to support the lower half of the outer water-scattering pipe and the flange portion abuts the stepped portion.

11. The water distribution mechanism according to claim 9, wherein: The water distribution mechanism includes a sealing component, which includes a first sealing component arranged between the first connecting member and the first side wall, a second sealing component arranged between the flange and the sealing plate, and / or a third sealing component arranged between the sealing plate and the second side wall.

12. The water distribution mechanism according to any one of claims 6 to 11, wherein: The water distribution mechanism comprises at least one bracket, and the at least one bracket is placed in the lower half of the water-scattering outer pipe to support the water-scattering inner pipe.

13. The water distribution mechanism according to claim 12, wherein: The at least one bracket includes a plurality of brackets, each bracket having a first abutment portion and a second abutment portion, the first abutment portion having an inner tube abutment surface complementary to the outer surface shape of the water-scattering inner tube, and the second abutment portion having an outer tube abutment surface complementary to the inner surface shape of the lower half of the water-scattering outer tube.

14. The water distribution mechanism according to any one of claims 1 to 13, wherein: At least one supporting member for holding the water-spreading outer pipe is arranged in the water distribution tray.

15. The water distribution mechanism according to claim 14, wherein: The support member includes an abutting surface having a shape complementary to that of an outer surface of the water-scattering outer pipe and a plane surface disposed against an upper surface of the water-distributing tray.

16. A water distribution mechanism assembly, wherein: The water distribution mechanism assembly comprises at least two water distribution mechanisms according to any one of claims 1 to 15, wherein the water dispersion inner pipe penetrates the first wall and the second side wall of all the water distribution mechanisms and extends to the second side wall of the last water distribution mechanism, and the end of the water dispersion inner pipe is sealed by a cap tube.

17. The water distribution mechanism assembly according to claim 16, wherein: Each of the water distribution mechanisms has a water level regulating member installed at the lower part of the water-scattering outer pipe, and the water level regulating member has a connecting pipe. The second ends of the connecting pipes of adjacent water distribution mechanisms extending to the outside of the water distribution mechanisms are connected through a connecting ring to communicate with the adjacent water distribution mechanisms.

18. The water distribution mechanism assembly according to claim 17, wherein: The second end of the connecting pipe of the water level regulating member of the last water distribution mechanism is sealed by a cap.

19. The water distribution mechanism according to claim 17 or 18, wherein: The water level regulating member is configured to extend through a first connecting member and a second connecting assembly for fixing the double-tube water diffusion pipe to a first side wall and a second side wall of the water distribution tray and enter into the water diffusion outer pipe.

20. A cooling tower, comprising the water distribution mechanism according to any one of claims 1-15 or the water distribution mechanism assembly according to any one of claims 16-19.

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