Sand removing system provided with weighing platform

Abstract

The utility model belongs to the technical field of equipment cooling, and particularly relates to a sand removing system provided with a weighing platform and used for a cooling system, which comprises a water spraying pipe arranged at the bottom of a water tank, the water spraying pipe is an annular closed pipe, and a plurality of water spraying holes facing the middle position of an area enclosed by the water spraying pipe are distributed on the wall body of the water spraying pipe along the length direction of the water spraying pipe. A water inlet of the water spraying pipe is connected with a water outlet of a sand gathering circulating pipeline, a water inlet of the sand gathering circulating pipeline is connected with the water pool, and a sand gathering pump is arranged on the sand gathering circulating pipeline; a water inlet of a sand removal circulating pipeline is formed above the middle position of the area defined by the water spraying pipes, the sand removal circulating pipeline is sequentially connected with a sand removal pump and a filter, and a water outlet of the sand removal circulating pipeline is connected with a water pool. When the sand is cleaned, only the sand collecting pump and the sand removing pump need to be started, the cooling tower does not need to be shut down, and normal work of the cooling tower is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of equipment cooling technology, specifically relating to a sand removal system equipped with a weighing platform for a cooling system. Background Technology

[0002] The widespread application of containerized wet and dry cooling towers allows existing wet and dry cooling towers to be integrated into a container-like structure for easy relocation and installation. A wet and dry cooling tower includes a tower body, fan, spray system, inlet pipe, outlet pipe, and heat exchanger. The inlet end of the heat exchanger is connected to the inlet pipe, and the outlet end is connected to the outlet pipe. Externally supplied water enters the heat exchanger through the inlet pipe, is cooled by the heat exchanger, and is then output through the outlet pipe. The fan draws external air into the tower body and then extracts the hot air, cooling the air inside the tower and consequently the heat exchanger. When further cooling is required, the spray system can be activated. The spray system includes spray pipes, a spray pump, spray heads, and a water tank. The spray heads are located above the heat exchanger, and the water tank is located below the heat exchanger. The liquid outlet of the spray pipe is connected to the spray head, and the liquid inlet of the spray pipe is connected to the water tank. The spray pump is installed at the liquid outlet of the water tank. During cooling, the cooling water in the water tank is drawn from the water tank to the top of the heat exchanger through the spray pipe by the spray pump, and then sprayed onto the heat exchanger through the spray head to accelerate the heat dissipation of the heat exchanger. The water that has absorbed heat from the heat exchanger falls into the water tank for further recycling.

[0003] If the environment in which the cooling tower is used is windy and dusty, sand can enter the cooling tower's water tank through the louvers, resulting in a high sand content in the water. Under humid cooling conditions, water with a high sand content entering the spray system will reduce the spray's heat dissipation efficiency; in severe cases, the sand can clog the spray heads and pipes, causing malfunctions. Current on-site solutions include manually draining and cleaning the accumulated sand, or adding a filter screen to the spray pump inlet to prevent sand from entering the spray pipes.

[0004] Among sand removal and filtration equipment in other industries, cyclone sand separators are more suitable for the working conditions of separating sand and water, and are widely used in agricultural irrigation.

[0005] The disadvantages of existing technologies for sand removal from cold towers are summarized as follows:

[0006] 1. Manually draining and clearing accumulated sand on-site not only causes equipment downtime but also wastes cooling water. This is especially true in arid regions where water resources are even more precious, and the cost of manually draining and clearing accumulated sand is enormous.

[0007] 2. Adding a filter screen to the inlet of the spray pump does not actually clean up the accumulated sand. The sand in the water tank will accumulate more and more, causing the cooling tower to fail to cool properly.

[0008] 3. After conventional cyclone desanders remove sand, the sand settles in the sand storage tank. The sand storage tank contains both water and sand. When too much sand settles, it will lead to difficulties in cleaning and a reduction in sand removal efficiency. Therefore, the sand position display sensor is very important. When the amount of sand reaches a certain level, it should be cleaned in time. Currently, the amount of sand in the sand storage tank is observed through a commonly used transparent window. However, it is actually difficult to see the position of the sand-water mixture. Most of the material level sensors commonly used on the market measure the material level in the air, which cannot be used in water due to factors such as sealing. Utility Model Content

[0009] To solve the above-mentioned technical problems, this utility model provides a sand removal system equipped with a weighing platform.

[0010] The purpose of this utility model is achieved through the following technical solution. A sand removal system equipped with a weighing platform, according to this utility model, includes a water spray pipe installed at the bottom of a water tank. The water spray pipe is a closed annular pipe. Multiple spray holes are distributed along the length of the water spray pipe, pointing towards the center of the area enclosed by the water spray pipe. The inlet of the water spray pipe is connected to the outlet of a sand-collecting circulation pipe, and the inlet of the sand-collecting circulation pipe is connected to the water tank. A sand-collecting pump is installed on the sand-collecting circulation pipe. Above the center of the area enclosed by the water spray pipe is the inlet of a sand removal circulation pipe. A sand removal pump and a filter are connected sequentially to the sand removal circulation pipe, and the outlet of the sand removal circulation pipe is connected to the water tank.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] By employing two sets of circulation systems for sand accumulation and sand removal, as much sand as possible in the cooling tower's water tank can be cleaned through the filter. This prevents sand far from the inlet of the sand removal circulation pipe from being sucked into the water tank when the sand removal circulation pipe is extended into the tank, ensuring a good sand removal effect. While cleaning the sand, only the sand accumulation pump and the sand removal pump need to be turned on, without shutting down the cooling tower, thus ensuring the normal operation of the cooling tower.

[0013] Furthermore, the connection point between the inlet of the sand circulation pipe and the water pool is located above the area where the spray pipe is located.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] To prevent sand from entering the sand-aggregating circulation pipe and clogging the sand-aggregating pump, and to ensure the normal operation of the sand-aggregating process.

[0016] Furthermore, the outlet of the sand removal circulation pipe is connected to the bottom of the water tank.

[0017] Furthermore, multiple water spray pipes are installed at the bottom of the pool, and each water spray pipe has an inlet for a sand removal and circulation pipe located above the center of the area it surrounds.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] When this sand removal system is used in a large pool, multiple water spray pipes are used to ensure that the sand at the bottom of the pool can be collected and pumped away through the sand removal circulation pipe.

[0020] Furthermore, the sand removal circulation pipeline is equipped with a cyclone sand remover.

[0021] Furthermore, the sand outlet of the cyclone desander is connected to the sand storage tank through a sand outlet pipe, a sand outlet valve is installed on the sand outlet pipe, and the sand storage tank is placed on a weighing platform; an alarm is installed on the weighing platform.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] By installing a weighing platform below the filter, the amount of sand in the filter and sand storage tank can be assessed by measuring changes in weight. By setting alarm values ​​on the weighing platform, maintenance personnel can be promptly alerted to clean up the sand, preventing sand accumulation from affecting the normal operation of the equipment.

[0024] Furthermore, a brush filter is also installed on the sand removal circulation pipeline, and the brush filter is located downstream of the cyclone sand separator.

[0025] Furthermore, the brush filter is installed on the weighing platform, and an alarm is installed on the weighing platform.

[0026] Compared with the prior art, the advantages of this utility model are:

[0027] A brush filter can further refine the filtration of sand, minimizing the amount of sand in the pool.

[0028] Furthermore, the outlet of the cyclone sand separator is connected to the brush filter pipeline through a sand removal circulation pipe. The brush filter pipeline includes a first branch and a second branch. The first branch is connected in sequence to a first valve, a brush filter, and a second valve, and the second branch is connected to a third valve.

[0029] Compared with the prior art, the advantages of this utility model are:

[0030] The brush filter can be turned on as needed. If fine filtration of the water in the pool is required, open the first valve and the second valve, and close the third valve. The water flowing out of the cyclone sand separator will enter the brush filter for further filtration. If fine filtration of the water in the pool is not required, close the first valve and the second valve, and open the third valve. The water from which the sand has been removed by the cyclone sand separator will be sent directly into the pool.

[0031] Furthermore, the water tank is located below the heat exchanger inside the cooling tower, and a spray head is installed above the heat exchanger. The water tank is connected to the spray head through a spray pipe, and a spray pump is installed on the spray pipe.

[0032] Compared with the prior art, the advantages of this utility model are:

[0033] By using a sand removal system, the sand content in the water tank can be reduced as much as possible, avoiding interference with the normal water cooling of the heat exchanger. It is suitable for environments with strong winds and sandstorms, and can also avoid the waste of water resources by using recycled water to cool the heat exchanger.

[0034] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a sand removal system equipped with a weighing platform according to an embodiment of the present invention.

[0036] Figure 2 for Figure 1 A partial schematic diagram of the central water spray pipe;

[0037] Figure 3 This is a schematic diagram simulating the spraying of water from two water pipes.

[0038] [Attached image labels]

[0039] 1-Pool,

[0040] 2-Water spray pipe, 201-Water spray hole

[0041] 3-Polymerized Sand Pump

[0042] 4-Sand removal pump,

[0043] 5-Cyclone sand separator,

[0044] 6-Sand storage tank,

[0045] 7-Weighing platform,

[0046] 8-Brush Filter

[0047] 9-First valve,

[0048] 10-Second valve,

[0049] 11-Third valve. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0051] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] The features and performance of a sand removal system equipped with a weighing platform according to the present invention will be further described in detail below with reference to embodiments.

[0058] An embodiment of the sand removal system equipped with a weighing platform according to this utility model is as follows: Figures 1 to 2 As shown. The sand removal system includes a water spray pipe 2, a sand-gathering pump 3, a sand-removing pump 4, a cyclone sand separator 5, a brush filter 8, and a weighing platform 7. The sand removal system is connected to the water tank 1 of the cooling tower and is used to gather the sand in the water tank 1 of the cooling tower and pump the gathered sand away with water for filtration. After the sand is removed by filtration, the water is returned to the water tank 1.

[0059] Water spray pipes 2 are arranged around the bottom of the pool 1. Multiple water spray holes 201 are distributed along the length of the wall of the water spray pipes 2. The water spray holes 201 are inclined downward and face the center of the area enclosed by the water spray pipes 2 at the bottom of the pool. The axis of the water spray hole 201 has a certain angle with the bottom surface of the pool. In this embodiment, the angle is 20°. The water sprayed from the water spray hole 201 can blow the sand on the bottom surface of the pool towards the center of the area enclosed by the water spray pipes 5.

[0060] The spray pipe 2 is a closed annular pipe, with its inlet connected to the outlet of the sand-collecting circulation pipe. The inlet of the sand-collecting circulation pipe is located in the upper layer of the pool (above the spray pipe 2) to draw water from the pool and prevent sand from clogging the sand removal circulation pipe. A sand-collecting pump 3 is installed on the sand-collecting circulation pipe. Under the action of the sand-collecting pump 3, the sand-collecting circulation pipe draws water with less sand from the upper layer of the pool and delivers it to the spray pipe 2. The water is sprayed out from the spray holes, and under the action of water pressure, it transports the sand at the bottom of the pool to the center of the bottom, facilitating the extraction of sand from the pool 1 by the inlet of the sand removal circulation pipe.

[0061] In this embodiment, since the containerized wet-dry combined cooling tower is rectangular, the water tank 1 is also rectangular. Two interconnected spray pipes 2 are installed at the bottom of the water tank 1. Each spray pipe 2 is arranged in a nearly square ring shape at the bottom of the water tank 1. The area enclosed by the two spray pipes 2 can basically cover the bottom surface of the water tank 1. The two spray pipes 2 are interconnected and connected to a sand-collecting circulation pipe. Under the action of the sand-collecting pump 3, the sand at the bottom of the water tank 1 is gathered at the center of the area enclosed by the corresponding spray pipe 2. Figure 3 The diagram shown is a simulation of water spraying from two water pipes.

[0062] In other embodiments, each spray pipe 1 may be connected to a separate sand-collecting circulation pipe to enhance sand-collecting capacity.

[0063] In other embodiments, the shape and number of water spray pipes 2 can be set according to the shape and area of ​​the pool. For example, when the shape of the pool 1 is circular, the layout of the water spray pipes 2 can be set as a ring. When the area of ​​the pool 1 is large, the water spray pipes 2 can be laid in a mesh pattern at the bottom of the pool 1. Under the action of the water spray holes, each mesh gathers the sand at the bottom of the pool in the middle of the mesh. The inlet of the sand removal circulation pipe is set above the middle position of each mesh.

[0064] The size of the water spray holes on the water spray pipe 2, the angle between the water spray holes and the bottom surface of the pool, and the spacing between them can be optimized through fluid simulation to ensure that the water sprayed from the water spray holes gathers the water on the bottom surface of the pool 1 to the middle position of the area enclosed by the water spray pipe 2.

[0065] The inlet of the sand removal circulation pipe is located above the center of the area enclosed by the ring-shaped water spray pipe 2, and the inlet is close to the bottom of the pool. The sand removal circulation pipe is connected in sequence to the sand removal pump 4, the cyclone sand separator 5, and the brush filter pipe. The outlet of the sand removal circulation pipe is connected to the bottom of the pool 1.

[0066] The cyclone separator 5 can be the same as CN 220703324 U_cyclone separator or other existing technologies. The sand-containing water is drawn from the middle of the area enclosed by the water spray pipe to the cyclone separator 5 by the sand pump 4, thereby separating the sand from the water. This is existing technology and will not be described in detail here.

[0067] The sand outlet of the hydrocyclone separator 5 is connected to the top of the sand storage tank 6 via a sand outlet pipe. A sand outlet valve is installed on the sand outlet pipe; when opened, it discharges the sand from the hydrocyclone separator 5 into the sand storage tank 6. The bottom of the sand storage tank 6 is placed on a weighing platform 7. The weighing platform 7 is used to weigh the sand storage tank 6 to calculate the weight of the sand inside. An alarm is installed on the weighing platform 7. After the alarm threshold is set, the alarm will sound when the weight of the sand in the sand storage tank 6 exceeds the threshold, reminding the operator to promptly empty the sand from the tank.

[0068] The outlet of the cyclone sand separator 5 is connected to the brush filter pipeline through the sand removal circulation pipeline. The brush filter pipeline includes a first branch and a second branch. The first branch is connected in sequence to the first valve 9, the brush filter 8, and the second valve 10. The second branch is connected to the third valve 11.

[0069] The brush filter 8 is located downstream of the cyclone sand separator 5. It can be a fully automatic brush filter (CN 221513666 U) or other filters that can finely filter sand. The water filtered by the cyclone sand separator 5 flows through the brush filter 8 for further filtration, further reducing the sand in the water.

[0070] The brush filter 8 can be turned on as needed. If fine filtration of the water in the pool is required, open the first valve 9 and the second valve 10, and close the third valve 11. The water flowing out of the cyclone sand separator 5 enters the brush filter 8 for further filtration. If fine filtration of the water in the pool is not required, close the first valve 9 and the second valve 10, and open the third valve 11. The water from which the sand has been removed by the cyclone sand separator 5 is directly sent into the pool 1.

[0071] To ensure timely removal of sand from the brush filter 8, the brush filter 8 can also be placed on a separate weighing platform equipped with an alarm. When the brush filter 8 reaches a certain weight, the alarm will sound to remind the operator to remove the sand. The brush filter 8 can also share the same weighing platform with the cyclone separator 8.

[0072] The sand-containing water is pumped from the center of the area enclosed by the water spray pipe in the water tank 1 by the sand pump 4 to the cyclone sand separator 5 for sand-water separation. After secondary filtration by the brush filter 8, the water is returned to the water tank 1. This cycle continues to remove sand from the water tank 1.

[0073] Water tank 1 is located below the heat exchanger inside the cooling tower, and spray heads are installed above the heat exchanger. Water tank 1 is connected to the spray heads via spray pipes, and a spray pump is installed on the spray pipes. The spray pump draws water from water tank 1 to the spray heads, which then spray the water onto the heat exchanger for cooling. Water below the heat exchanger is collected and reused, conserving water resources. When water cooling is needed for faster cooling, the spray pump is turned on to water-cool the heat exchanger.

[0074] When the cooling tower is set up in an environment with strong winds and sand, sand can enter the water tank. The sand collection pump 3 and the sand removal pump 4 can be turned on to collect and remove the sand in the water tank.

[0075] To avoid mutual interference and achieve better sand removal results, sand pump 3 and sand removal pump 4 can be turned on to remove sand when the spray pump is not working.

[0076] This utility model has the following technical effects:

[0077] By employing two sets of circulation systems for sand accumulation and sand removal, as much sand as possible in the cooling tower water tank can be cleaned through the filter. This prevents sand far from the inlet of the sand removal circulation pipe from being sucked into the water tank when the sand removal circulation pipe is extended into the water tank, thus ensuring a good sand removal effect. While cleaning the sand, only the sand accumulation pump 3 and the sand removal pump 4 need to be turned on, without having to shut down the cooling tower, ensuring the normal operation of the cooling tower.

[0078] By installing a weighing platform below the filter, the amount of sand in the filter and sand storage tank can be assessed by measuring changes in weight. By setting an alarm value on the weighing platform, maintenance personnel can be promptly reminded to clean the sand.

[0079] In other embodiments of this utility model, sand removal can be performed using only a cyclone separator 5 or a brush filter, or by using other filters.

[0080] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand removal system equipped with a weighing platform, characterized in that: It includes a water spray pipe (2) for installation at the bottom of the water tank (1). The water spray pipe (2) is a closed ring pipe. The wall of the water spray pipe (2) is distributed with multiple water spray holes (201) facing the middle of the area enclosed by the water spray pipe (2) along the length direction of the water spray pipe (2). The inlet of the water spray pipe (2) is connected to the outlet of the sand-collecting circulation pipe. The inlet of the sand-collecting circulation pipe is connected to the water tank (1). A sand-collecting pump (3) is installed on the sand-collecting circulation pipe. The inlet of the sand removal circulation pipe is located above the middle of the area enclosed by the water spray pipe (2). A sand removal pump (4) and a filter are connected in sequence on the sand removal circulation pipe. The outlet of the sand removal circulation pipe is connected to the water tank (1).

2. A sand removal system equipped with a weighing platform according to claim 1, characterized in that: The connection point between the inlet of the sand circulation pipe and the water tank (1) is located above the area where the spray pipe (2) is located.

3. A sand removal system equipped with a weighing platform according to claim 1, characterized in that: The outlet of the sand removal circulation pipe is connected to the bottom of the water tank (1).

4. A sand removal system equipped with a weighing platform according to claim 1, characterized in that: The bottom of the pool (1) is provided with multiple water spray pipes (2), and each water spray pipe (2) is provided with an inlet of a sand removal circulation pipe above the middle position of the area enclosed by the middle position.

5. A sand removal system equipped with a weighing platform according to claim 1, characterized in that: The sand removal circulation pipeline is equipped with a cyclone sand remover (5).

6. A sand removal system equipped with a weighing platform according to claim 5, characterized in that: The sand outlet of the cyclone separator (5) is connected to the sand storage tank (6) through the sand outlet pipe. A sand outlet valve is installed on the sand outlet pipe. The sand storage tank (6) is placed on the weighing platform (7). An alarm is installed on the weighing platform (7).

7. A sand removal system equipped with a weighing platform according to claim 5, characterized in that: A brush filter (8) is also installed on the sand removal circulation pipeline. The brush filter (8) is located downstream of the cyclone sand separator (5).

8. A sand removal system equipped with a weighing platform according to claim 7, characterized in that: The brush filter (8) is installed on the weighing platform, and an alarm is installed on the weighing platform.

9. A sand removal system equipped with a weighing platform according to claim 7, characterized in that: The outlet of the cyclone sand separator (5) is connected to the brush filter pipeline through the sand removal circulation pipeline. The brush filter pipeline includes a first branch and a second branch. The first branch is connected in sequence to the first valve (9), the brush filter (8), and the second valve (10). The second branch is connected to the third valve (11).

10. A sand removal system equipped with a weighing platform according to claim 1, characterized in that: The water tank (1) is located below the heat exchanger inside the cold tower, and a spray head is installed above the heat exchanger. The water tank (1) is connected to the spray head through a spray pipe, and a spray pump is installed on the spray pipe.

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