Water through vertical pipe of transverse flow closed cooling tower

Abstract

The utility model discloses a vertical water pipe of a cross-flow closed cooling tower, which relates to the technical field of vertical water pipes, and comprises a mounting base, a water pipe and a steel sheet, the mounting base is fixedly arranged at the bottom of the water pipe, the cross section of the water pipe is rectangular, mounting holes are processed on the same side surface of the water pipe, and the steel sheet is fixedly arranged on the mounting base. According to the cooling tower, an existing water passing vertical pipe is improved, the structure of an original cooling tower is not affected, the structure of the cooling tower does not need to be adjusted according to the improved water passing vertical pipe, and the applicability is high. The vertical water pipe is adjusted to be a cuboid, the width of the mounting hole is smaller than one fourth of the perimeter of the vertical water pipe, the influence on the strength of the vertical water pipe is small, the plane where the mounting hole is located is a plane, the precision of the welded steel sheet is higher, and later mounting is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of water pipes for cooling towers, and particularly to a water riser for a crossflow closed cooling tower. Background Technology

[0002] When a closed-circuit cooling tower is in operation, the circulation is divided into three parts. The first side circulation (external circulation) involves the heat transfer solution (circulating hot water) flowing through the coils of the closed-circuit cooling tower in four stages: ① First, the heat from the heat transfer solution is transferred to the inner surface of the coils via convection; ② Heat is conducted through the coil walls to the outer surface of the coils; ③ Heat is transferred from the outer surface of the coils to the water film flowing outside the coils via convective heat transfer; ④ Finally, heat is transferred from the water film to the air via evaporation and convection. The second side circulation (self-circulation) involves spray water being drawn from the water pan at the bottom of the cooling tower by a spray water pump to the water distribution system. After being evenly distributed onto the heat dissipation material by the water distributor, it exchanges latent and sensible heat with the air, undergoing pre-cooling before flowing to the coil assembly. A stable water film forms on the outer wall of the coils, absorbing the heat transferred from the medium inside the coils, and finally returns to the water pan, thus completing the cycle. Air circulation: The fan draws unsaturated air from outside the cooling tower into the tower. The airflow passes through coils and heat dissipation materials, and exchanges latent and sensible heat with the spray water in the secondary side circulation (self-circulation) to absorb heat and separate steam and water. Finally, the nearly saturated humid air is discharged outside the tower. Through the above three circulations and four-stage heat exchange, the closed-circuit cooling tower cools the primary heat transfer solution to the required temperature and returns it to the system to maintain its normal operation.

[0003] Current water risers are made by cutting multiple notches on the side of a cylindrical pipe, then welding steel sheets, and machining screw holes in the steel sheets for easy installation. However, the arc length of the notch is at least one-third of the pipe's circumference, which greatly reduces the pipe's strength. Furthermore, the welding process can deform the pipe and steel sheets, affecting the accuracy of subsequent installation and increasing the difficulty of installation.

[0004] Existing patent: 201420177540.2, a novel inlet structure for a closed-loop cooling tower cooling pipe, comprising a casing plate, which is bent to form a bent end and an open end. End plates are installed at both ends of the casing plate. The bent end connects to the inlet pipe, and the open end is fitted with a rectangular baffle. The baffle forms outward bends on opposite sides along its length, and the baffle also has multiple through holes for connecting to branch pipes. This invention avoids gaps between the baffle and the casing plate, reducing the chance of leakage, facilitating welding, and improving overall aesthetics. While this prior art provides a specially designed structure for connecting to the branch pipe, it does not offer a solution for mounting on the water supply pipe, making it unsuitable for existing water supply risers. Existing water supply pipes use cylindrical fittings with steel plates attached, connecting to the water pipe via these plates. When improving the water supply pipe, it is necessary to ensure minimal structural changes to reduce the scope of modifications to the overall cooling tower structure, minimize structural adjustments, and save costs. Utility Model Content

[0005] The purpose of this utility model is to provide a water supply riser for a crossflow closed cooling tower, which solves the problems of insufficient strength and installation accuracy of the current water supply pipe by replacing the original cylindrical pipe with a rectangular pipe.

[0006] According to one aspect of this disclosure, the following technical solution is provided: a water supply riser for a crossflow closed cooling tower, comprising a mounting base, a water supply pipe, and a steel sheet, wherein the mounting base is fixedly disposed at the bottom of the water supply pipe, the water supply pipe has a rectangular cross-section and mounting holes are machined on the same side, and the steel sheet is welded to the mounting holes.

[0007] Preferably, the steel sheet is connected to the inlet of the heat dissipation coil of the crossflow closed cooling tower.

[0008] Preferably, the steel sheet is machined with threaded water passage holes, and a connector with internal threads is provided at the pipe opening of the heat dissipation coil. The connector and the water passage holes are connected by an external pipe with external threads at both ends.

[0009] Preferably, the water pipe is fixedly connected to a water inlet pipe on the lower part of the opposite side of the mounting hole.

[0010] Preferably, small pipes are provided on the top surface of the water pipe and at the bottom of the side where the water inlet pipe is located.

[0011] Preferably, the length and width of the steel sheet are both greater than the length and width of the mounting hole.

[0012] Preferably, the cross-section of the water pipe is square.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This invention improves upon existing water supply risers without affecting the original cooling tower structure. It eliminates the need for structural adjustments to the cooling tower based on the improved riser, making it highly adaptable. The water supply riser is redesigned as a cuboid, with the mounting hole width less than a quarter of the riser's circumference, minimizing impact on its strength. Furthermore, the mounting hole's planar surface allows for higher precision in the welded steel sheet, facilitating subsequent installation. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0016] Figure 1This is a schematic diagram of the water riser of a crossflow closed cooling tower according to one embodiment of the present disclosure.

[0017] Figure 2 This is a schematic diagram of the installation of the water riser of a crossflow closed cooling tower according to one embodiment of the present disclosure.

[0018] The specific labels in the attached figures are as follows:

[0019] Mounting base - 1, water pipe - 2, steel plate - 3, mounting hole - 4, water hole - 5, radiator coil - 6, water inlet pipe - 7, small pipe - 8. Detailed Implementation

[0020] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0021] The water riser of a crossflow closed-circuit cooling tower is a crucial component of the cooling tower system, typically made of corrosion-resistant materials such as stainless steel and PVC. Stainless steel boasts high strength, excellent corrosion resistance, and high-temperature resistance, enabling it to withstand complex working environments. PVC offers good corrosion resistance, insulation, and lower cost, while also being lightweight and easy to install and maintain. The solution described in this application primarily refers to weldable, corrosion-resistant materials such as stainless steel.

[0022] Regularly inspect the surface and connections of water risers for any water droplets or signs of leakage. If a leak is detected, promptly pinpoint the leak point. For leaks caused by aging seals, replace the seals; for leaks caused by pipe corrosion and perforation, repair the corroded areas or replace the pipe.

[0023] Cleaning scale: Scale, silt, algae, and other dirt may accumulate inside the water riser, affecting water flow and heat exchange efficiency. Regular cleaning using chemical or physical methods is recommended. Chemical cleaning can be done with specialized descaling agents, while physical cleaning can be achieved using a high-pressure water jet.

[0024] Check the support and fixation: Inspect the support structure of the riser to ensure it is secure and free from looseness, deformation, or damage. Problems with the support may cause the riser to shift, wobble, or even break. Repair or replace the support components promptly to ensure the stability of the riser.

[0025] As shown in the attached diagram, the water riser of the crossflow closed-circuit cooling tower of this application includes a mounting base 1, a water pipe 2, and a steel sheet 3. The mounting base 1 is fixedly installed at the bottom of the water pipe 2. The water pipe 2 has a rectangular cross-section and mounting holes 4 are machined on the same side. Preferably, the cross-section of the water pipe 2 is square. The advantage of a square cross-section is that any side can be machined when machining the mounting holes 4. The steel sheet 3 is welded to the mounting holes 4. The length and width of the steel sheet 3 are both greater than the length and width of the mounting holes 4. In this way, it can be ensured that the steel sheet 3 can completely cover the mounting holes 4. The size of the mounting holes 4 is set according to the number of water holes 5 required, and is no longer designed according to the size of the steel sheet 3. In this way, the size of the mounting holes 4 can be smaller, which has less impact on the strength of the water pipe 2 and less impact on the precision of welding.

[0026] The steel sheet 3 is connected to the inlet of the heat dissipation coil 6 of the crossflow closed cooling tower. The steel sheet 3 is machined with threaded water passage holes 5. A connector with internal threads is provided at the inlet of the heat dissipation coil 6. The connector and the water passage hole 5 are connected by an external pipe with external threads at both ends. The drawings of this application do not disclose the details. In specific cases, the inlet of the heat dissipation coil is welded with nuts, and the two ends of the external pipe are machined with threads that respectively mate with the threads of the nuts and the water passage holes, so as to achieve a detachable connection.

[0027] The water pipe 2 is fixedly connected to the water inlet pipe 7 on the lower part of the opposite side of the mounting hole.

[0028] Small pipes 8 are provided on the top surface of the water pipe 2 and at the bottom of the side where the water inlet pipe 7 is located. The small pipes 8 are used to release air from the water pipe 2, which is beneficial to the stable operation of the system. In addition, during maintenance, the small pipes 8 can discharge circulating water. The specific operation method is as follows: the small pipe 8 on the top surface of the water pipe 2 can only release air, while the small pipe 8 at the bottom of the side where the water inlet pipe 7 is located discharges circulating water. When discharging, the small pipe 8 at the top is opened. Under pressure, it is easier to discharge circulating water quickly, especially in winter, to prevent the pipe from freezing and cracking.

[0029] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0030] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A water passing vertical pipe of a cross flow closed cooling tower, comprising a mounting base, a water passing pipe and a steel sheet, wherein the mounting base is fixedly arranged at the bottom of the water passing pipe, characterized in that, The cross section of the water pipe is rectangular, and the mounting hole is formed on the same side, and the steel sheet is welded on the mounting hole.

2. The hotwell of a crossflow closed cooling tower according to claim 1, characterized in that: The steel sheet is communicated with the pipe orifice of the heat dissipation coil pipe of the cross flow closed cooling tower.

3. The hotwell of a crossflow closed cooling tower according to claim 2, characterized in that: The steel sheet is provided with a water hole with threads, and a joint with internal threads is arranged at the pipe orifice of the heat dissipation coil pipe, and the joint and the water hole are connected through an external connecting pipe with external threads arranged at both ends.

4. The hotwell of a crossflow closed cooling tower according to claim 3, characterized in that: The water pipe is fixedly communicated with a water inlet connecting pipe at the lower part of the other side opposite to the mounting hole.

5. The hotwell of a crossflow closed cooling tower according to claim 4, characterized in that: The top surface of the water pipe and the bottom of the side where the water inlet connecting pipe is arranged are both provided with small pipes.

6. The hotwell of a crossflow closed cooling tower according to claim 5, characterized in that: The length and width of the steel sheet are both greater than the length and width of the mounting hole.

7. The hotwell of a crossflow closed cooling tower according to claim 6, characterized in that: The cross section of the water pipe is square.

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