Evaporation cooling system

Abstract

The utility model relates to the technical field of refrigeration, in particular to an evaporation cooling system which comprises an evaporation cooling main body, a conductivity meter arranged on the evaporation cooling main body and used for detecting the concentration degree of circulating cooling water in the evaporation cooling main body, and a controller electrically connected with the conductivity meter. According to the utility model, the branch is arranged on the connecting pipe, the conductivity meter used for monitoring the concentration of the circulating cooling water in the water storage tank is arranged on the branch, then the conductivity meter transmits a latest monitoring signal to the controller, and the controller judges the received latest signal according to a standard threshold value of the controller; and corresponding instructions are made for opening and closing of the first self-control valve and the second self-control valve, so that the function that the evaporative cooling system automatically replaces circulating cooling water based on the accurate concentration value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to an evaporative cooling system. Background Art

[0002] Evaporative cooling, whose full name is evaporative condenser, is a highly efficient heat exchange equipment that is widely used in many industries such as petrochemicals, light industry and medicine, refrigeration and air conditioning, and food refrigeration. Its working principle is based on the principle that water evaporation takes away heat.

[0003] In an evaporative cooling system, a circulating water pump pumps circulating cooling water from a storage tank to the top of the chiller inlet. The water then sprays onto the internal pipe surfaces. When the water comes into contact with the high-temperature pipes, it evaporates and removes heat, thereby lowering the temperature of the medium inside the pipes. The circulating cooling water then flows back into the storage tank under the action of gravity. The water in the storage tank is then pumped to the top of the chiller inlet by the circulating water pump for the next cooling cycle. This cycle repeats, causing the circulating cooling water in the storage tank to evaporate continuously, increasing its concentration factor. This increasing concentration factor exacerbates the precipitation and crystallization of calcium and magnesium ions in the circulating cooling water, leading to scaling on the high-temperature pipe surfaces and shortening the service life of the evaporative cooling system. Therefore, in evaporative cooling systems, it is necessary to replace the circulating cooling water in the storage tank to address the problem of scaling on the high-temperature pipe surfaces caused by the increasing number of circulating cooling water cycles.

[0004] However, in the existing technology, the most commonly used method is still the more traditional one of manually judging whether the circulating cooling water needs to be replaced and then draining it manually. Although manual water replacement is simple to operate, it cannot accurately grasp the concentration of the circulating cooling water. If drainage is performed when the concentration ratio is too low, a large amount of circulating cooling water will be wasted. If drainage is performed when the concentration ratio is too high, the precipitated crystals will cover the high-temperature tube surface, which will not only reduce the cooling effect, but also affect the service life of the evaporative cooling system. Utility Model Content

[0005] The purpose of the present invention is to provide an evaporative cooling system to solve the problems raised in the above background technology.

[0006] The technical solution adopted in this utility model is:

[0007] An evaporative cooling system, comprising:

[0008] Evaporative cooling main body;

[0009] A conductivity meter, provided on the evaporative cooling body, for detecting the concentration level of the circulating cooling water in the evaporative cooling body;

[0010] a controller electrically connected to the conductivity meter;

[0011] in,

[0012] The evaporative cooling body comprises:

[0013] a heat exchange zone, in which heat exchange tubes are arranged;

[0014] A water storage area is provided therein with a water tank, a sewage pipe is provided on one end of the water tank, a first automatic control valve is provided on the sewage pipe, and the first automatic control valve is electrically connected to the controller; a water supply pipe is provided on the other end of the water tank, and a second automatic control valve is provided on the water supply pipe, and the second automatic control valve is electrically connected to the controller;

[0015] Pipes for connecting the heat exchange area, the water storage area and the conductivity meter;

[0016] A spray pump is connected to the pipeline.

[0017] Optionally, the pipeline includes:

[0018] A connecting pipe connected to the water tank;

[0019] a spray pipe, located above the heat exchange pipe and connected to the connecting pipe;

[0020] A detection tube, one end of which is connected to the connecting tube, and the other end of which is connected to the conductivity meter and the water storage tank in sequence.

[0021] Optionally, a Y-shaped filter is detachably provided on one end of the detection tube adjacent to the connecting tube, and the Y-shaped filter is located at the front end of the conductivity meter along the flow direction of the circulating cooling water.

[0022] Optionally, a fan is provided above the spray pipe.

[0023] Optionally, an automatic cleaning component located on one side of the conductivity meter for cleaning the conductivity meter probe is also included.

[0024] Optionally, the automatic cleaning component includes:

[0025] A cleaning bucket with a straight groove on one side;

[0026] A support block is located on one side of the cleaning bucket;

[0027] a motor, disposed inside one end of the support block, with an output shaft thereof passing through the support block;

[0028] A screw rod is fixed on the output shaft of the motor, and its free extension end is rotatably connected to the other end of the support block;

[0029] A lifting plate is sleeved on the outer side of the screw rod;

[0030] A mounting ring is movably disposed in the cleaning barrel and connected to an end of the lifting plate that is away from the screw rod and passes through the straight slot;

[0031] The nozzle is arranged on the inner side of the mounting ring.

[0032] Optionally, a hose is provided in the lifting plate, one end of the hose is connected to an external liquid supply device, and the other end of the hose extends to the nozzle through the lifting plate.

[0033] Optionally, there are multiple nozzles, which are arranged at equal intervals on the inner side of the mounting ring.

[0034] Optionally, an upper cover is movably provided on the top of the cleaning bucket, and a through hole is opened on the upper cover, and the conductivity meter probe passes through the through hole.

[0035] Optionally, a drain pipe is provided below one side of the cleaning bucket, and the drain pipe is communicated with the interior of the cleaning bucket.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] In this utility model, a branch line is provided on the connecting pipe, equipped with a conductivity meter for monitoring the concentration of the circulating cooling water in the water storage tank. The conductivity meter then transmits the latest monitoring signal to the controller, which judges the received latest signal based on its standard threshold and issues corresponding instructions for opening and closing the first and second automatic control valves. This enables the evaporative cooling system to automatically replace the circulating cooling water based on the precise concentration value. The conductivity meter enables accurate judgment of the concentration level of the circulating cooling water, solving the problems of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 This is a schematic diagram of the overall structure of this application;

[0040] Figure 2 This is a schematic diagram of the overall structure of the automatic cleaning component in this application;

[0041] Figure 3 This is a schematic structural diagram of the automatic cleaning component in this application from another perspective;

[0042] Figure 4 This is a schematic diagram of the implementation structure of the automatic cleaning component in this application.

[0043] Reference numerals:

[0044] 1. Evaporative cooling unit; 11. Heat exchange tube; 12. Water storage tank; 13. Drain pipe; 14. First automatic control valve; 15. Water supply pipe; 16. Second automatic control valve; 17. Connecting pipe; 18. Detection pipe; 19. Spray pipe;

[0045] 2. Conductivity meter; 21. Probe;

[0046] 3. Spray pump; 4. Y-type filter; 5. Fan;

[0047] 6. Automatic cleaning assembly; 61. Cleaning barrel; 611. Straight groove; 62. Support block; 63. Motor; 64. Screw rod; 65. Lifting plate; 66. Mounting ring; 67. Nozzle; 68. Upper cover; 681. Through hole; 69. Drain pipe. DETAILED DESCRIPTION

[0048] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0050] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] like Figure 1 As shown, an embodiment of the present invention provides an evaporative cooling system, comprising: an evaporative cooling body 1, a conductivity meter 2 located on the evaporative cooling body 1 for detecting the concentration level of circulating cooling water, and a controller (not shown in the figure) for receiving signals transmitted by the conductivity meter 2 and making corresponding instructions based on the signals.

[0052] The evaporative cooling body 1 mainly consists of a heat exchange area located at the top for heat exchange, a water storage area located at the bottom for storing circulating cooling water, and pipes for connecting the heat exchange area, the water storage area and the conductivity meter 2.

[0053] Among them, a heat exchange tube 11 is provided in the heat exchange zone. The heat exchange tube 11 can be a shell-and-tube heat exchange tube, a coiled tube heat exchange tube, or a sleeve-and-tube heat exchange tube. As a preferred embodiment, the heat exchange tube 11 in this embodiment is a coiled tube heat exchange tube, which not only increases the length of the heat exchange tube 11, but also increases the heat exchange area, thereby improving the heat exchange efficiency. The medium that needs to be cooled flows through the heat exchange tube 11. The medium enters through one end of the heat exchange tube 11 and is then discharged from the other end of the heat exchange tube 11. In order to further improve the heat exchange efficiency, there are multiple heat exchange tubes 11 in this embodiment, and each heat exchange tube 11 is distributed in the heat exchange zone in a parallel manner.

[0054] A water tank 12 is provided within the water storage area. A drain pipe 13 is provided at one end of the water tank 12 for draining the wastewater therefrom. A first automatic valve 14 is provided on the drain pipe 13. A water supply pipe 15 is provided at the other end for transferring clean water to the water tank 12. A second automatic valve 16 is provided on the water supply pipe 15. In this embodiment, the water supply pipe 15 is located above the drain pipe 13. Clean circulating cooling water entering the water tank 12 through the water supply pipe 15 is located above the water tank 12, while wastewater to be discharged below the water tank 12 is discharged through the drain pipe 13. This arrangement allows for simultaneous replenishment and drainage, preventing the water tank 12 from affecting the heat exchange efficiency of the heat exchange tubes 11 while replacing the circulating cooling water.

[0055] The pipeline primarily consists of a connecting pipe 17, a detection pipe 18 connected to the connecting pipe 17, and a spray pipe 19 located above the heat exchange tube 11. One end of the connecting pipe 17 is connected to the water tank 12, and the other end is connected to the spray pipe 19. A spray pump 3 is installed at one end of the connecting pipe 17, located at the water tank 12. The spray pump 3 drives the circulating cooling water from the water tank 12 into the connecting pipe 17, and then into the detection pipe 18 and spray pipe 19 through the connecting pipe 17. The detection pipe 18 is connected to the connecting pipe 17 at one end and to the water tank 12 at the other end. The circulating cooling water flowing through the detection pipe 18 ultimately flows back into the water tank 12. A plurality of water distributors (not shown in the figure) are arranged at intervals on the spray pipe 19, and each water distributor is equipped with a high-efficiency anti-clogging nozzle (not shown in the figure). The circulating cooling water is evenly distributed to each heat exchange tube 11 through the nozzle. The water flows down in a film-like manner on the outer surface of the heat exchange tube 11. The medium in the heat exchange tube 11 is cooled by evaporation of the water, thereby achieving the purpose of cooling the medium.

[0056] Conductivity meter 2 is mounted on detection tube 18, with its probe 21 extending through detection tube 18 and positioned within detection tube 18. Under the continuous action of spray pump 3, a portion of the circulating cooling water in connecting tube 17 passes through spray pipe 19 and acts on heat exchange tube 11 for heat exchange. The circulating cooling water then flows back to water storage tank 12 under the action of gravity. Another portion of the circulating cooling water passes through detection tube 18 and fully contacts probe 21 of conductivity meter 2 before returning to water storage tank 12. The conductivity of the circulating cooling water is measured by probe 21 of conductivity meter 2 through full contact with the circulating cooling water. Since conductivity is proportional to the concentration of ions in the circulating cooling water, measuring the conductivity of the circulating cooling water indirectly provides an understanding of its ion concentration, thereby determining the degree of concentration of the circulating cooling water. In this embodiment, the operating principle and usage of conductivity meter 2 are both prior art and are therefore not specifically described.

[0057] The controller is electrically connected to the conductivity meter 2 , and a standard threshold is set therein for controlling the opening and closing of the first automatic control valve 14 and the second automatic control valve 16 .

[0058] During specific operation, the spray pump 3 is started, and the circulating cooling water in the water storage tank 12 is transported to the connecting pipe 17 through the spray pump 3. Part of the water in the connecting pipe 17 acts on the heat exchange tube 11 through the spray pipe 19, achieving heat exchange in the heat exchange tube 11, thereby reducing the temperature of the medium in the heat exchange tube 11. The other part of the water passes through the detection tube 18 and fully contacts the probe 21 in the detection tube 18. The probe 21 detects the concentration of the circulating cooling water and transmits the detection value signal to the controller. The controller judges the detection value. When the detection value is higher than the standard threshold, the controller controls the first automatic control valve 14 to automatically open for sewage discharge operation, and at the same time, controls the second automatic control valve 16 to automatically open for the delivery of clean circulating cooling water. When the signal value transmitted by the conductivity meter 2 is lower than the standard threshold, the controller controls the first automatic control valve 14 to automatically close, stopping the sewage discharge operation, and at the same time, controls the second automatic control valve 16 to close, stopping the delivery of clean circulating cooling water. In this way, as long as the spray pump 3 starts working, the conductivity meter 2 can monitor the circulating cooling water in real time and transmit the latest monitoring signal to the controller. The controller judges the latest received signal according to its standard threshold value and issues corresponding instructions to the first automatic control valve 14 and the second automatic control valve 16, thereby realizing the function of automatically and accurately replacing the circulating cooling water of the evaporative cooling system.

[0059] Furthermore, in order to improve the measurement accuracy of the conductivity meter 2, a Y-shaped filter 4 is detachably provided on one end of the detection tube 18 adjacent to the connecting tube 17. The Y-shaped filter 4 is located at the front end of the conductivity meter 2 along the flow direction of the circulating cooling water. The Y-shaped filter 4 filters out suspended matter, particulate matter, etc. in the circulating cooling water to be measured that flows toward and contacts the conductivity meter 2, thereby preventing impurities such as suspended matter and particulate matter in the circulating cooling water from adhering to the probe 21 of the conductivity meter 2.

[0060] Furthermore, to improve the heat exchange efficiency of the heat exchange tubes 11, fans 5 are installed above the heat exchange tubes 11, that is, above the spray pipes 19. The number of fans 5 corresponds to the number of heat exchange tubes 11. The fans 5 enhance air flow, which can carry away water vapor near the heat exchange tubes 11, thereby promoting continuous evaporation of water.

[0061] Since the probe 21 is immersed in circulating cooling water for a long time, a large amount of sediment will gradually adhere to its surface over time. Excessive sediment will not only reduce the measurement accuracy of the conductivity meter 2, but also damage the service life of the probe 21. Frequent replacement of the probe 21 will increase the cost. In order to extend the service life of the probe 21, the present application also discloses an automatic cleaning component 6 for cleaning the probe 21.

[0062] like Figure 2-3 As shown, the automatic cleaning component 6 specifically includes: a cleaning barrel 61, a straight groove 611 is provided on one side of the cleaning barrel 61, and a support block 62 that is roughly in the shape of a "]" is provided on one side of the cleaning barrel 61. A motor 63 is provided inside one end of the support block 62. The output shaft of the motor 63 passes through the support block 62 and is fixed with a screw rod 64, and the free extension end of the screw rod 64 is rotatably connected to the other end of the support block 62. A lifting plate 65 is sleeved on the outer side of the screw rod 64. The end of the lifting plate 65 away from the screw rod 64 passes through the straight groove 611 and is provided with a mounting ring 66, which is located in the cleaning barrel 61 and can move up and down in the cleaning barrel 61. A number of trumpet-shaped nozzles 67 are provided at equal intervals on the inner side of the mounting ring 66. A hose (not shown in the figure) is provided in the lifting plate 65, one end of the hose is connected to an external liquid supply device (not shown in the figure), and the other end extends to the nozzle 67 through the lifting plate 65; the motor 63 rotates to drive the screw rod 64 to rotate to realize the up and down movement of the lifting plate 65 and the mounting ring 66, and water is sprayed through the nozzle 67 to clean the probe 21.

[0063] Furthermore, an upper cover 68 is movably provided at the top of the cleaning barrel 61 , and a through hole 681 is opened on the upper cover 68 . The diameter of the through hole 681 ensures that the probe 21 can extend into the cleaning barrel 61 and supports the probe 21 .

[0064] Furthermore, a drain pipe 69 is provided at the lower side of the cleaning bucket 61 , and the drain pipe 69 is communicated with the interior of the cleaning bucket 61 to facilitate the discharge of water in the cleaning bucket 61 .

[0065] During use, if Figure 4 As shown, the probe 21 that has been tested and is stained with the circulating cooling water to be tested is inserted into the cleaning barrel 61 through the through hole 681 of the upper cover 68, and the motor 63 is started. The motor 63 drives the screw 64 to rotate so that the lifting plate 65 and the mounting ring 66 move up and down, and the external liquid supply device is started. The nozzle 67 cleans the probe 21 up and down.

[0066] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An evaporative cooling system, characterized in that: include: Evaporative cooling body; a conductivity meter, provided on the evaporative cooling body, for detecting the concentration degree of the circulating cooling water in the evaporative cooling body; A controller is electrically connected to the conductivity meter; wherein the evaporative cooling body includes: a heat exchange area, in which a heat exchange tube is provided; a water storage area, in which a water tank is provided, a sewage pipe is provided on one end of the water tank, a first automatic control valve is provided on the sewage pipe, and the first automatic control valve is electrically connected to the controller; a water supply pipe is provided on the other end of the water tank, a second automatic control valve is provided on the water supply pipe, and the second automatic control valve is electrically connected to the controller; a pipeline is used to connect the heat exchange area, the water storage area and the conductivity meter; a spray pump is connected to the pipeline.

2. The evaporative cooling system according to claim 1, characterized in that: The pipeline includes: a connecting pipe connected to the water tank; a spray pipe located above the heat exchange pipe and connected to the connecting pipe; a detection tube, one end of which is connected to the connecting pipe and the other end is connected to the conductivity meter and the water tank in sequence.

3. The evaporative cooling system according to claim 2, characterized in that: A Y-shaped filter is detachably provided on one end of the detection tube adjacent to the connecting tube, and the Y-shaped filter is located at the front end of the conductivity meter along the flow direction of the circulating cooling water.

4. The evaporative cooling system according to claim 2, characterized in that: A fan is provided above the spray pipe.

5. The evaporative cooling system according to claim 1, characterized in that: It also includes an automatic cleaning component located on one side of the conductivity meter for cleaning the conductivity meter probe.

6. The evaporative cooling system according to claim 5, characterized in that: The automatic cleaning component includes: a cleaning bucket with a straight groove on one side; a support block located on one side of the cleaning bucket; a motor arranged inside one end of the support block, and its output shaft passes through the support block; a screw rod fixedly mounted on the output shaft of the motor, and its free extension end is rotatably connected to the other end of the support block; a lifting plate sleeved on the outside of the screw rod; a mounting ring movably arranged in the cleaning bucket and connected to one end of the lifting plate away from the screw rod and passing through the straight groove; and a nozzle arranged on the inner side of the mounting ring.

7. The evaporative cooling system according to claim 6, characterized in that: A hose is provided in the lifting plate, one end of the hose is connected to an external liquid supply device, and the other end of the hose extends to the nozzle through the lifting plate.

8. The evaporative cooling system according to claim 6, characterized in that: There are multiple nozzles, which are arranged at equal intervals on the inner side of the mounting ring.

9. The evaporative cooling system according to claim 6, characterized in that: An upper cover is movably provided on the top of the cleaning bucket. A through hole is provided on the upper cover, and the conductivity meter probe passes through the through hole.

10. The evaporative cooling system according to claim 6, characterized in that: A drainage pipe is provided below one side of the cleaning bucket, and the drainage pipe is communicated with the interior of the cleaning bucket.

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