Accelerated circulating water return device

Abstract

The utility model discloses an accelerated circulation water return device which comprises a main pipeline, a connecting pipe A, a water pump assembly, a connecting pipe B and a liquid level rod, the water inlet side of the water pump assembly is connected with the main pipeline through the connecting pipe A, the water outlet side of the water pump assembly is connected with the main pipeline through the connecting pipe B. One end of the connecting pipe B extends into the main pipeline, and a spray head is arranged at one end of the connecting pipe B. And the liquid level rod is connected with the top of the main pipeline. Through the arrangement of the spray head, the fluid speed is increased, the high-speed fluid generates pressure drop, so that circulating water in the main pipeline is sucked by the suction inlet of the spray head and enters the working fluid, the water flow in the whole circulating water pipe is accelerated, and the flow rate is increased. And the liquid level of the system is monitored in real time through the liquid level sensor arranged on the liquid level rod, so that the power of the high-pressure water pump is accurately adjusted, and stable control over circulating return water is achieved. The utility model has the advantages of simple structure and low manufacturing cost, and is suitable for a circulating cooling water system.

Description

Technical Field

[0001] The utility model belongs to the technical field of water flow acceleration, and particularly relates to an accelerated circulating return water device. Background Art

[0002] The circulating cooling water system is a commonly used system in large factories. When expanding production and adding equipment in the factory, the problem of insufficient design flow of the circulating cooling water system is often encountered. Adding large equipment will also involve the problem of large-scale construction of infrastructure affecting production, thereby increasing the investment cost. Therefore, a device with low cost that can increase the flow rate of the circulating cooling water system and detect the water level is needed.

[0003] The patent document with the publication number CN219932581U discloses a Venturi injector, which includes a hollow columnar outer pipe body, a valve core fixedly embedded in the outer pipe body. The valve core includes a water inlet section, a water outlet section and a suction section. The water inlet section is horizontally connected to the water outlet section. An assembly hole penetrating the outer pipe body is opened on the side wall of the outer pipe body. The suction section passes through the assembly hole and extends into the inner part of the outer pipe body to connect with the water inlet section. A cross is fixedly embedded in the water inlet section. A chuck is arranged at the connection between the water inlet section and the water outlet section. The chuck is evenly spaced with through holes along the circumference of the chuck. The cross disturbs the water flow into a spiral shape, so that the suction section can more quickly extract the air in the outer pipe body. The Venturi injector of the utility model can improve the water flow velocity, increase the suction volume of vacuum pumping, accelerate the water flow velocity, and improve the working efficiency of the injector. However, this device cannot be directly used in the circulating cooling water system and lacks a connection structure and a water level detection function. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides an accelerated circulating return water device.

[0005] The utility model is achieved through the following technical solutions.

[0006] An accelerated circulating return water device provided by the utility model includes a main pipeline, a connecting pipe A, a water pump assembly, a connecting pipe B and a liquid level rod. The water inlet side of the water pump assembly is connected to the main pipeline through the connecting pipe A, and the water outlet side of the water pump assembly is connected to the main pipeline through the connecting pipe B. One end of the connecting pipe B extends into the main pipeline, and a nozzle is arranged at one end of the connecting pipe B. The liquid level rod is connected to the top of the main pipeline.

[0007] Preferably, the water pump assembly includes a water pump and a fixing assembly. The water pump is connected to the main pipeline through the fixing assembly. The fixing assembly includes a fixing part and a fixing rod. The fixing part is connected to the water pump, and the fixing part is connected to the main pipeline through the fixing rod.

[0008] Preferably, the fixing part is annular, the water pump passes through and is connected to the fixing part, and several slots are arranged on the fixing part.

[0009] Preferably, one end of the connecting pipe A is provided with a buffer part, and the connecting pipe A is connected to the main pipeline through the buffer part. The top of the buffer part is flush with the bottom of the main pipeline, and the cross-sectional area of the buffer part is larger than that of the connecting pipe A.

[0010] Preferably, flanges are provided at both ends of the main pipeline.

[0011] Preferably, the liquid level rod is perpendicular to the main pipeline, and a plurality of liquid level sensors are sequentially arranged on the liquid level rod from bottom to top.

[0012] Preferably, the nozzle is a Venturi injector, and the water outlet direction of the nozzle is the same as the water flow direction in the main pipeline.

[0013] The beneficial effects of the present utility model are as follows:

[0014] Through the setting of the nozzle, the present utility model improves the fluid velocity. The high-speed fluid generates a pressure drop, causing the circulating water in the main pipeline to be sucked into the nozzle suction port and enter the working fluid. The water flow in the entire circulating water pipe will be accelerated and the flow rate will be increased. The liquid level sensors arranged on the liquid level rod are used to monitor the system liquid level in real time, and then the power of the high-pressure water pump is accurately adjusted to achieve stable control of the circulating return water. The structure of the present utility model is simple and the manufacturing cost is low, which is suitable for use in the circulating cooling water system. Description of the Drawings

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the present utility model;

[0017] In the figure: 1 - main pipeline, 11 - flange, 2 - connecting pipe A, 21 - buffer part, 3 - water pump assembly, 4 - connecting pipe B, 41 - nozzle, 5 - liquid level rod, 51 - liquid level sensor, 6 - water pump, 7 - fixing assembly, 71 - fixing piece, 72 - fixing rod, 73 - slot. Detailed Embodiments

[0018] The technical solutions of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0019] Embodiment:

[0020] As Figure 1 、 2As shown in the figure, an accelerated circulating return water device includes a main pipeline 1, a connecting pipe A 2, a water pump assembly 3, a connecting pipe B 4, and a liquid level rod 5. The water inlet side of the water pump assembly 3 is connected to the main pipeline 1 through the connecting pipe A 2, and the water outlet side of the water pump assembly 3 is connected to the main pipeline 1 through the connecting pipe B 4. One end of the connecting pipe B 4 extends into the main pipeline 1, and a spray head 41 is provided at one end of the connecting pipe B 4. The liquid level rod 5 is connected to the top of the main pipeline 1.

[0021] The water pump assembly 3 includes a water pump 6 and a fixing assembly 7. The water pump 6 is connected to the main pipeline 1 through the fixing assembly 7. The water pump 6 is a high-pressure water pump, and the water pump 6 provides power water for the spray nozzle 41. The fixing assembly 7 includes a fixing part 71 and a fixing rod 72. The fixing part 71 is connected to the water pump 6, and the fixing part 71 is welded to the main pipeline 1 through the fixing rod 72.

[0022] The fixing part 71 is annular, and the water pump 6 passes through and is connected to the fixing part 71. A plurality of slots 73 are provided on the fixing part 71 for heat dissipation of the water pump 6.

[0023] One end of the connecting pipe A 2 is provided with a buffer part 21. The connecting pipe A 2 is connected to the main pipeline 1 through the buffer part 21. The top of the buffer part 21 is flush with the bottom of the main pipeline 1. The cross-sectional area of the buffer part 21 is larger than that of the connecting pipe A 2. The buffer part 21 can prevent the air in the main pipeline 1 from being sucked into the water pump 6 and causing the power of the water pump 6 to be unstable.

[0024] Flanges 11 are provided at both ends of the main pipeline 1 for easy connection to other pipelines.

[0025] The liquid level rod 5 is perpendicular to the main pipeline 1, and a plurality of liquid level sensors 51 are sequentially arranged on the liquid level rod 5 from bottom to top. The liquid level rod 5 is used to monitor the liquid level of the entire system connected to this device. By setting liquid level sensors 51 at different heights on the liquid level rod 5, it can prevent the water level in the liquid collection device within the system from being too high and overflowing. The liquid level sensors 51 are used to control the power of the high-pressure water pump 6 to achieve stable control of the circulating return water. When the water level is too high, the liquid level sensor 51 at this position detects it and increases the power of the water pump 6, thereby accelerating the water flow and reducing the water level.

[0026] The spray head 41 is a Venturi injector, and the water outlet direction of the spray head 41 is the same as the water flow direction in the main pipeline 1. In actual use, the diameter of the spray head 41 is calculated based on the lift and flow rate of the water pump 6. Under the condition of the maximum ejection speed, the diameter of the spray head 41 cannot affect the flow rate of the water pump 6. The pressurized working (power) fluid enters the injection chamber from the spray head 41 to form a high-speed jet fluid.

[0027] The utility model is applicable to the flow acceleration of a circulating cooling water system. According to the formula: Q = A × V, where Q represents the water flow rate, A represents the cross-sectional area of the pipeline, and V represents the water flow velocity, it can be seen that by increasing the water flow velocity of the cooling water, the flow rate of the circulating cooling water return system is further increased.

Claims

1. An accelerated circulation water return device, characterized in that: The invention comprises a main pipeline (1), a connecting pipe A (2), a water pump assembly (3), a connecting pipe B (4) and a liquid level rod (5); the water inlet side of the water pump assembly (3) is connected to the main pipeline (1) through the connecting pipe A (2); the water outlet side of the water pump assembly (3) is connected to the main pipeline (1) through the connecting pipe B (4); one end of the connecting pipe B (4) extends into the main pipeline (1); a nozzle (41) is arranged at one end of the connecting pipe B (4); and the liquid level rod (5) is connected to the top of the main pipeline (1).

2. The accelerated circulation water return device according to claim 1, characterized in that: The water pump assembly (3) comprises a water pump (6) and a fixing assembly (7); the water pump (6) is connected to the main pipeline (1) via the fixing assembly (7); the fixing assembly (7) comprises a fixing member (71) and a fixing rod (72); the fixing member (71) is connected to the water pump (6); and the fixing member (71) is connected to the main pipeline (1) via the fixing rod (72).

3. The accelerated circulation water return device according to claim 2, characterized in that: The fixing member (71) is annular in shape, the water pump (6) passes through the fixing member (71) for connection, and a plurality of slots (73) are arranged on the fixing member (71).

4. The accelerated circulation water return device according to claim 1, characterized in that: A buffer portion (21) is provided at one end of the connecting pipe A (2), and the connecting pipe A (2) is connected to the main pipe (1) via the buffer portion (21). The top of the buffer portion (21) is flush with the bottom of the main pipe (1), and the cross-sectional area of ​​the buffer portion (21) is greater than the cross-sectional area of ​​the connecting pipe A (2).

5. The accelerated circulation water return device according to claim 1, characterized in that: Flanges (11) are provided at both ends of the main pipeline (1).

6. The accelerated circulation water return device according to claim 1, characterized in that: The liquid level rod (5) is perpendicular to the main pipeline (1), and a plurality of liquid level sensors (51) are arranged on the liquid level rod (5) in sequence from bottom to top.

7. The accelerated circulation water return device according to claim 1, characterized in that: The nozzle (41) is a Venturi ejector, and the water outlet direction of the nozzle (41) is the same as the water flow direction in the main pipeline (1).

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