Industrial heat exchanger forced washing device

Abstract

The utility model provides a kind of industrial heat exchange pan forced flushing device, including heat exchange pan, filter tank and delivery pump, the heat exchange pan is provided with cold water outlet and cold water inlet, the cold water inlet and the output end of delivery pump are fixedly connected, the cold water outlet is provided with filter pipeline, first valve is provided on the filter pipeline, the other end of the filter pipeline and filter tank are connected, the filter tank includes tank body, quartz sand layer is filled and arranged in the inside of the tank body.The utility model can not affect heat exchange work, realize the flushing of the inside of heat exchange pan.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a forced rinsing device for industrial heat exchangers. Background Technology

[0002] A heat exchanger (also known as a heat exchange vessel, heat exchanger dish, or heat exchange equipment) is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. It is an industrial application of convective heat transfer and heat conduction. Heat exchangers can be classified in different ways. According to their operating process, they can be divided into three main categories: indirect-flow type, mixing type, and regenerative (or regenerative) type; according to the compactness of their surfaces, they can be divided into compact type and non-compact type.

[0003] Over prolonged operation, especially when water is the medium, scale will form on the surface of heat exchanger tubes. Scale buildup directly leads to decreased equipment efficiency, increased energy consumption, higher maintenance costs, and even a shortened equipment lifespan. For heat exchangers prone to particulate scale buildup, regular flushing can effectively remove loose scale. Flushing typically involves disassembling the ends of the heat exchanger and using rubber plugs and high-pressure water guns for descaling, a time-consuming process that requires the heat exchanger to be shut down. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a forced rinsing device for industrial heat exchangers, comprising a heat exchanger, a filter tank, and a transfer pump. The heat exchanger is equipped with a cold water outlet and a cold water inlet. The cold water inlet is fixedly connected to the output end of the transfer pump. A filter pipe is installed on the cold water outlet, and a first valve is installed on the filter pipe. The other end of the filter pipe is connected to the filter tank. Under normal operation, cold water is pumped into the cold water inlet by the transfer pump. After heat exchange, the cold water is discharged from the cold water outlet. When rinsing is required, the flow rate and velocity of the cold water pumped into the heat exchanger are increased to force off and remove scale adhering to the heat exchange tubes. At this time, the first valve opens, and cold water enters the filter tube from the filter pipe for filtration and reuse.

[0005] The filter tank includes a tank body, the interior of which is filled with a layer of quartz sand. The quartz sand layer traps and retains scale buildup.

[0006] Preferably, a second valve is provided on the cold water outlet, the connection between the filter pipeline and the cold water outlet is located between the second valve and the heat exchanger, and a third valve is provided on the cold water inlet. Under normal heat exchange conditions, the second valve is open and the first valve is closed. In flushing mode, the first valve is open and the second valve is closed, while the third valve is a throttling valve. By controlling the opening and closing degree of the valve, the flow rate of cold water is controlled.

[0007] Preferably, the heat exchange dish has several branch pipes fixedly connected at equal intervals on its sidewalls, and the other end of each branch pipe is connected to a cold water outlet. A fourth valve is installed on each branch pipe. The heat exchange dish has several baffles, which increase the flow length. However, larger scale particles that detach due to impact settle at the bottom of the dish and are blocked by the baffles. Therefore, not all scale particles can be completely discharged from the cooling outlet. Hence, branch pipes are provided to discharge the scale particles between adjacent baffles on the same side. Meanwhile, the fourth valve is only opened in flushing mode.

[0008] Preferably, a support frame is provided at the bottom of the tank, and the quartz sand layer is placed on the support frame. Filter cotton layers are laid on both the upper and lower surfaces of the quartz sand layer. The filter cotton layers are used to reduce the impact and disturbance of the quartz sand layer by the water flow.

[0009] Preferably, the tank is equipped with several nozzles inside, and the nozzles are connected to the filter pipeline. This prevents the delivered water from directly impacting the quartz sand layer.

[0010] The beneficial effects of this utility model are as follows: 1. By controlling the first valve, the second valve, the third valve and the fourth valve, the cleaning mode and the heat exchange mode can be switched. The scale generated can be knocked off, the inside of the heat exchange dish can be rinsed, and the heat exchange dish can still exchange heat normally during the rinsing process.

[0011] 2. A filter tank is provided. After rinsing, the refrigerant enters the filter tank for filtration and is then reused, ensuring that the refrigerant is not wasted. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a front view of the heat exchanger of this utility model; Figure 3 This is a schematic diagram of the structure of the filter tank of this utility model.

[0013] List of reference numerals in the attached diagram: 1. Heat exchanger; 2. Cold water outlet; 3. First valve; 4. Second valve; 5. Filter pipeline; 6. Filter tank; 7. Third valve; 8. Cold water inlet; 9. Branch pipe; 10. Fourth valve; 61. Tank body; 62. Support frame; 63. Quartz sand layer; 64. Filter cotton layer; 65. Sprayer head. Detailed Implementation

[0014] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0015] like Figures 1 to 3 As shown, an industrial heat exchanger forced flushing device includes a heat exchanger 1, a filter tank 6, and a transfer pump. The transfer pump pumps cold water into the heat exchanger 1. The heat exchanger 1 is provided with a cold water outlet 2 and a cold water inlet 8, which are the inlet and outlet of the refrigerant. The refrigerant used here is water. The cold water inlet 8 is fixedly connected to the output end of the transfer pump. A filter pipe 5 is provided on the cold water outlet 2. A first valve 3 is provided on the filter pipe 5. The other end of the filter pipe 5 is connected to the filter tank 6. In flushing mode, the flushed refrigerant enters the filter tank 6 through the filter pipe 5 for filtration and then is reused.

[0016] The filter tank 6 includes a tank body 61, and the interior of the tank body 61 is filled with a quartz sand layer 63. The refrigerant seeps down from the top of the quartz sand layer 63 and traps the scale, thus achieving the filtration effect.

[0017] A second valve 4 is installed on the cold water outlet 2. In the flushing mode, the second valve 4 is closed. The connection between the filter pipe 5 and the cold water outlet 2 is located between the second valve 4 and the heat exchanger 1. A third valve 7 is installed on the cold water inlet 8. The third valve 7 is a throttling valve. By adjusting the opening and closing degree of the valve core, the amount of refrigerant entering can be controlled.

[0018] Several branch pipes 9 are fixedly connected at equal intervals to the side wall of the heat exchange dish 1. The other end of each branch pipe 9 is connected to the cold water outlet 2. A fourth valve 10 is installed on the branch pipe 9. In the flushing mode, the fourth valve 10 is opened, and then the branch pipe 9 can send out the scale that has settled at the bottom of the heat exchange dish 1.

[0019] A support frame 62 is provided at the bottom of the tank 61. The quartz sand layer 63 is placed on the support frame 62. Filter cotton layers 64 are laid on both the upper and lower surfaces of the quartz sand layer 63. The filter cotton layer 64 at the bottom supports the quartz sand layer 63 to prevent the quartz sand from leaking from the support frame 62, while the filter cotton layer 64 at the top prevents the refrigerant from directly impacting the quartz sand layer 63.

[0020] The tank 61 is equipped with several nozzles 65, and the nozzles 65 are connected to the filter pipe 5. The nozzles 65 are used to disperse the refrigerant.

[0021] Working principle: In heat exchange mode, the second valve 4 and the third valve 7 are open, the first valve 3 and the fourth valve 10 are closed, and the refrigerant enters from the cold water inlet 8, passes through the heat exchange dish 1 and is then sent out from the cold water outlet 2. In flushing mode, the third valve 7 is opened to its maximum, the second valve 4 is closed, and the first valve 3 and the fourth valve 10 are opened. The refrigerant enters from the cold water inlet 8, passes through the heat exchanger 1, and then enters the filter tank 6 from the cold water outlet 2 and the filter pipe 5. At the same time, some refrigerant flows away from the branch pipe 9 and merges into the filter pipe 5. Then the refrigerant enters the filter tank 6, passes through the quartz sand layer 63 for filtration, and is reused. In addition, the heat exchanger 1 can also exchange heat normally in flushing mode.

[0022] It should be noted here that the first valve 3, the second valve 4, the third valve 7, and the fourth valve 10 are all solenoid valves. The control module can be remotely controlled and will start the flushing mode when the heat exchange efficiency decreases.

[0023] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. An industrial heat exchanger forced rinsing device, characterized in that, It includes a heat exchange dish (1), a filter tank (6) and a delivery pump. The heat exchange dish (1) is provided with a cold water outlet (2) and a cold water inlet (8). The cold water inlet (8) is fixedly connected to the output end of the delivery pump. A filter pipe (5) is provided on the cold water outlet (2). A first valve (3) is provided on the filter pipe (5). The other end of the filter pipe (5) is connected to the filter tank (6). The filter tank (6) includes a tank body (61), and the interior of the tank body (61) is filled with a layer of quartz sand (63).

2. The industrial heat exchanger forced rinsing device according to claim 1, characterized in that: A second valve (4) is provided on the cold water outlet (2), the connection between the filter pipeline (5) and the cold water outlet (2) is located between the second valve (4) and the heat exchanger (1), and a third valve (7) is provided on the cold water inlet (8).

3. The forced rinsing device for industrial heat exchangers according to claim 1, characterized in that: The heat exchange dish (1) has several branch pipes (9) fixedly connected at equal intervals on its side wall. The other end of each branch pipe (9) is connected to the cold water outlet (2). A fourth valve (10) is provided on each branch pipe (9).

4. The forced rinsing device for industrial heat exchangers according to claim 1, characterized in that: The tank (61) has a support frame (62) at its inner bottom. The quartz sand layer (63) is placed on the support frame (62). The upper and lower surfaces of the quartz sand layer (63) are covered with filter cotton layers (64).

5. The forced rinsing device for industrial heat exchangers according to claim 1, characterized in that: The tank (61) is equipped with several nozzles (65) inside, and the nozzles (65) are connected to the filter pipe (5).

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