Chemical adding system of cooling tower

Abstract

The utility model discloses a chemical feeding system of a cooling tower, which is used for conveying various chemical liquids to a tower pool of the cooling tower in different time periods and comprises a first chemical feeding device, a second chemical feeding device, a third chemical feeding device and a mixer, and the first chemical feeding device, the second chemical feeding device and the third chemical feeding device are connected on the mixer in parallel through pipelines. And the mixer is used for uniformly mixing the liquid medicine through repeated dispersion and collection. And the spraying assembly is fixedly arranged at the inlet of the tower pool, is connected with the mixer through a pipeline, and is used for spraying various liquid medicines into the tower pool. Liquid medicine from the first dosing device, the second dosing device and the third dosing device enters the mixer to be uniformly mixed and is sprayed into the tower pool through the spraying assembly, and a solvent in the sprayed liquid medicine is always kept in a specified concentration range, so that corrosion damage to a pipeline and the inner wall of the tower pool is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of adding medicine in a tower tank, in particular to a cooling tower adding medicine system. Background Art

[0002] Cooling tower is one of the important cooling equipment in water cooling technology, which mainly achieves the purpose of heat exchange by taking away heat.

[0003] In the continuous operation production process, it is necessary to add liquid medicine to the cooling tower to ensure its normal operation or extend the service life of the device. The liquid medicine mainly plays the role of scale prevention, corrosion prevention and control of microbial growth, so as to achieve the purpose of maintaining water quality. In the prior art, before adding liquid medicine to the cooling tower, it is necessary to mix the medicine with the circulating water to obtain the liquid medicine, and then transport the liquid medicine to the tower pool of the cooling tower through a high-pressure pump. However, due to the high height of the tower pool, the high-pressure pump directly transports the liquid medicine to the tower pool, and the dosing position is not conducive to mixing the medicine with the circulating water evenly. It is often the case that the concentration of the medicine in the liquid medicine is too high in a certain period of time, which is easy to cause corrosion to the dosing pump, pipeline and the inner wall of the tower. Over a long period of time, it will cause damage to the equipment and pipelines, shortening the service life of the equipment pipelines.

[0004] Therefore, due to uneven mixing, the chemical solution causes corrosion damage to the equipment pipelines and affects the service life. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a cooling tower dosing system, which delivers evenly mixed liquid medicine to the tower pool through a first dosing device, a second dosing device, a third dosing device, a mixer and a spray assembly.

[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0007] A cooling tower dosing system is used to deliver multiple liquid medicines to the tower pool of the cooling tower in different time periods, including: a first dosing device, a second dosing device, a third dosing device and a mixer, wherein the first dosing device, the second dosing device and the third dosing device are connected to the mixer through pipelines. The mixer is used to evenly mix the liquid medicines through multiple dispersions and collections.

[0008] The spray assembly is fixed at the inlet of the tower pool and connected to the mixer through a pipeline, and is used to spray a variety of liquid medicines into the tower pool.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The liquid medicines from the first dosing device, the second dosing device and the third dosing device enter the mixer for uniform mixing and are sprayed into the tower pool through the spray assembly. The solvent in the sprayed liquid medicine is always kept within the specified concentration range, reducing corrosion damage to the pipeline and the inner wall of the tower pool and extending the service life.

[0011] More preferably, the mixer comprises:

[0012] The shell is connected to the first dosing device, the second dosing device and the third dosing device through pipelines respectively, and is used to collect the drug solution.

[0013] The blade is spirally shaped and arranged in the shell. Its edge side wall is welded and completely in contact with the inner wall of the shell, forming a flow channel space with the shell, which is used to mix the drug solution evenly in the flow channel by alternating dispersion and concentration.

[0014] The mixing pipe is arranged at the outlet of the shell and connected to the spray assembly to transport the mixed liquid medicine to the spray assembly.

[0015] By adopting the above technical solution, after the drug liquid enters the shell, it is dispersed on the surface of the spiral blades, and then flows in the flow channel space through multiple spirals along the surface shape of the blades. The solvent and circulating water therein are fully mixed, ensuring that the drug liquid in the mixing pipe is always within the specified concentration range, thereby reducing corrosion damage to the mixing pipe.

[0016] More preferably, the cross section of the blade is trapezoidal.

[0017] With the above technical solution, after the liquid medicine falls on the blades, it is first dispersed on the wider surface, flows along the spiral blades to the narrower area of ​​the next trapezoidal surface, and then flows to the next wider surface, and then flows to the outlet mixing pipe of the mixer in the flow channel space; or the liquid medicine falls on the blades and first flows on the blade surface in the narrower area, and then disperses on the narrower surface, and then spirally circulates, and finally flows to the mixing pipe. Since the liquid medicine repeatedly contacts the wide and narrow blade surfaces in the flow channel space, the medicine and the circulating water can be fully contacted, and both processes can obtain mixed liquid medicine with consistent concentration.

[0018] More preferably, the first dosing device comprises:

[0019] First dosing tank.

[0020] The first dosing pump has an inlet connected to the first dosing tank pipeline, an outlet connected to the first delivery pipe, and an outlet of the first delivery pipe connected to the mixer.

[0021] By adopting the above technical solution, the first dosing tank is filled with the pre-added first agent and circulating water to obtain the first liquid medicine, and the first liquid medicine is transported to the mixer by the first dosing pump for sufficient mixing.

[0022] Further optimization is that the second dosing device includes:

[0023] Second dosing tank.

[0024] The inlet of the second dosing pump is connected to the pipeline of the second dosing tank, the outlet of the second dosing pump is connected to the second delivery pipe, and the outlet of the second delivery pipe is connected to the mixer.

[0025] By adopting the above technical solution, the second dosing tank is filled with the pre-added second agent and circulating water to obtain a second liquid medicine, and the second liquid medicine is transported to the mixer by the second dosing pump for sufficient mixing.

[0026] Further optimized, the third dosing device includes:

[0027] The third dosing tank.

[0028] The inlet of the third dosing pump is connected to the pipeline of the third dosing tank, and the outlet is connected to the third delivery pipe, and the outlet of the third delivery pipe is connected to the mixer. The third delivery pipe, the second delivery pipe and the first delivery pipe are connected at the inlet of the mixer.

[0029] By adopting the above technical solution, the third dosing tank is filled with the pre-added third agent and circulating water to obtain a third liquid medicine, and the third liquid medicine is transported to the mixer by the third dosing pump for sufficient mixing.

[0030] Further optimization is that the diameter D0 of the mixer satisfies the following relationship with the diameter D1 of the first delivery pipe, the diameter D2 of the second delivery pipe, and the diameter D3 of the third delivery pipe:

[0031] D0≥2D1. Or D0≥2D2. Or D0≥2D3.

[0032] Further optimization is that the diameter D0 of the mixer is 50 cm, and the diameters D1, D2, and D3 of the first delivery pipe, the second delivery pipe, and the third delivery pipe are all 15 cm.

[0033] The above technical solution is adopted to ensure that the mixer can fully mix different liquid medicines in different time periods.

[0034] Further optimized, the spray assembly includes:

[0035] The first support rod is arranged on the inlet connection nozzle of the tower pool, and both ends are respectively welded to the inner wall of the inlet connection nozzle.

[0036] The second support rod has its ends welded to the inner wall of the inlet nozzle, is located on both sides of the first support rod and is perpendicular to the first support rod, and its middle portion is buckled and matched with the middle portion of the first support rod.

[0037] A groove is provided in the first support rod and is used for accommodating the mixing pipe.

[0038] Two branch pipes are provided on the first support rod, located on both sides of the second support rod, parallel to the second support rod, and spanning across both sides of the groove, and are used for diverting the liquid medicine in the mixed delivery pipe.

[0039] The nozzle is arranged at the outlet of the branch pipe, is detachably connected to the branch pipe, and is used to spray the liquid medicine into the tower pool.

[0040] By adopting the above technical solution, the branch pipe on the first support rod and the branch pipe on the second support rod divert the liquid medicine from the mixing pipe to their respective nozzles, thereby achieving the purpose of uniformly transporting the liquid medicine and reducing corrosion damage to the inner wall of the tower pool.

[0041] It is further optimized to also include: a PLC control cabinet, which is controlled and connected with the first dosing device, the second dosing device, and the third dosing device.

[0042] By adopting the above technical solution, the first dosing device, the second dosing device and the third dosing device are controlled to configure different liquid medicines in different time periods, thereby achieving the purpose of automatic configuration and automatic delivery of liquid medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematic diagram of the process principle structure of this embodiment.

[0044] Figure 2 Schematic diagram of the structure of the mixer in this embodiment.

[0045] Figure 3 Schematic diagram of the structure of the spray assembly in this embodiment.

[0046] Figure markings: 1-PLC control cabinet; 2-first dosing device; 21-first dosing tank; 22-first dosing pump; 23-first delivery pipe; 3-second dosing device; 31-second dosing tank; 32-second dosing pump; 33-second delivery pipe; 4-third dosing device; 41-third dosing tank; 42-third dosing pump; 43-third delivery pipe; 5-mixer; 50-mixing pipe; 51-shell; 52-blade; 6-tower pool; 61-inlet nozzle; 7-spray assembly; 71-first support rod; 72-second support rod; 73-groove; 74-branch pipe; 75-spray head. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-Figure 3 The utility model is further introduced in detail.

[0048] A cooling tower dosing system, such as Figure 1 As shown, it is used to transport multiple liquid medicines to the tower pool 6 of the cooling tower in different time periods, including: a first dosing device 2, a second dosing device 3, a third dosing device 4 and a mixer 5. The first dosing device 2, the second dosing device 3 and the third dosing device 4 are connected to the mixer 5 through pipelines. The mixer 5 is used to mix the liquid medicines uniformly through multiple dispersions and collections.

[0049] The spray assembly 7 is fixedly installed at the inlet of the tower pool 6 and connected to the mixer 5 through a pipeline, and is used for spraying a variety of liquid medicines into the tower pool 6 .

[0050] The liquid medicines from the first dosing device 2, the second dosing device 3 and the third dosing device 4 enter the mixer 5 for uniform mixing and are sprayed into the tower pool 6 through the spray assembly 7. The solvent in the sprayed liquid medicines is always kept within the specified concentration range, thereby reducing corrosion damage to the pipeline and the inner wall of the tower pool 6 and extending the service life.

[0051] Specifically, Figure 1 and Figure 2 As shown, the mixer 5 in this embodiment includes:

[0052] The housing 51 is respectively connected to the first dosing device 2 , the second dosing device 3 and the third dosing device 4 through pipelines, and is used to collect the drug solution.

[0053] The blade 52 is spirally shaped and disposed in the shell 51. The edge side wall thereof is welded and in full contact with the inner wall of the shell 51, forming a flow channel space with the shell 51 for mixing the liquid medicine uniformly in the flow channel by alternating dispersion and concentration.

[0054] The mixing pipe 50 is disposed at the outlet of the housing 51 and connected to the spray assembly 7 to transport the mixed liquid medicine to the spray assembly 7 .

[0055] After the drug liquid enters the shell 51, it is dispersed on the surface of the spiral blades 52, and then flows in the flow channel space for multiple spirals along the surface shape of the blades 52. The solvent and circulating water therein are fully mixed to ensure that the drug liquid in the mixing pipe 50 is always within the specified concentration range, thereby reducing corrosion damage to the mixing pipe 50.

[0056] Specifically, Figure 1 and Figure 2As shown, the cross section of the blade 52 in this embodiment is trapezoidal. After the liquid medicine flows on the blade 52, it is first dispersed on the wider surface, flows along the spiral blade 52 to the narrower area of ​​the next trapezoidal surface, and then flows to the next wider surface, and then flows to the outlet mixing pipe 50 of the mixer 5 in the flow channel space; or the liquid medicine flows on the blade 52 and first flows on the surface of the blade 52 in the narrower area, and then disperses on the narrower surface, and then spirally circulates, and finally flows to the mixing pipe 50. Since the liquid medicine repeatedly contacts the surface of the blade 52 with alternating width and narrowness in the flow channel space, the liquid medicine also contacts the inner wall of the shell 51, so that the solvent and the circulating water are fully mixed, so the agent and the circulating water can be fully contacted, and both processes can obtain mixed liquid with consistent concentration.

[0057] Specifically, Figure 1 As shown, the first dosing device 2 in this embodiment includes:

[0058] The first dosing tank 21 and the first dosing pump 22, the inlet of the first dosing pump 22 is connected to the first dosing tank 21 pipeline, the outlet is connected to the first delivery pipe 23, and the outlet of the first delivery pipe 23 is connected to the mixer 5. The first dosing tank 21 is filled with the first agent and circulating water added in advance to obtain the first liquid medicine, and the first liquid medicine is delivered to the mixer 5 by the first dosing pump 22 for sufficient mixing.

[0059] Specifically, Figure 1 As shown, the second dosing device 3 in this embodiment includes:

[0060] The second dosing tank 31 and the second dosing pump 32, the inlet of the second dosing pump 32 is connected to the second dosing tank 31 pipeline, the outlet is connected to the second delivery pipe 33, and the outlet of the second delivery pipe 33 is connected to the mixer 5. The second dosing tank 31 is filled with the pre-added second agent and circulating water to obtain the second liquid medicine, and the second liquid medicine is delivered to the mixer 5 by the second dosing pump 32 for sufficient mixing.

[0061] Specifically, Figure 1 As shown, the third dosing device 4 in this embodiment includes:

[0062] The third dosing tank and the third dosing pump, the inlet of the third dosing pump is connected to the pipeline of the third dosing tank, the outlet of the third dosing pump is connected to the third delivery pipe, and the outlet of the third delivery pipe is connected to the mixer 5. The third delivery pipe, the second delivery pipe 33 and the first delivery pipe 23 are connected at the inlet of the mixer 5.

[0063] The third dosing tank is filled with the pre-added third agent and circulating water to obtain a third drug solution, which is then transported to the mixer 5 by a third dosing pump for full mixing.

[0064] Specifically, Figure 1 and Figure 2 As shown, the diameter D0 of the mixer 5 in this embodiment satisfies the following relationship with the diameter D1 of the first delivery pipe 23, the diameter D2 of the second delivery pipe 33, and the diameter D3 of the third delivery pipe:

[0065] D0≥2D1. Or D0≥2D2. Or D0≥2D3.

[0066] Specifically, Figure 1 and Figure 2 As shown, the diameter D0 of the mixer 5 in this embodiment is 50 cm, the diameter D1 of the first delivery pipe 23, the diameter D2 of the second delivery pipe 33 and the diameter D3 of the third delivery pipe are all 15 cm.

[0067] The liquid medicine can flow smoothly in the flow channel space, ensuring that the mixer 5 can fully mix different liquid medicines in different time periods.

[0068] Specifically, Figure 1 and Figure 3 As shown, the spray assembly 7 in this embodiment includes:

[0069] The first support rod 71 is disposed on the inlet nozzle 61 of the tower pool 6 , and both ends thereof are welded to the inner wall of the inlet nozzle 61 .

[0070] The second support rod 72 has its ends welded to the inner wall of the inlet nozzle 61 , is located on both sides of the first support rod 71 and is perpendicular to the first support rod 71 , and its middle portion is buckled and matched with the middle portion of the first support rod 71 .

[0071] The groove 73 is provided in the first support rod 71 and is used to place the mixing pipe 50. The size of the groove 73 is greater than or equal to the size of the mixing pipe 50, ensuring that the mixing pipe 50 can be completely placed in the groove 73, so that the spray assembly 7 has a compact structure and improves the stability of the spray assembly 7 at the inlet of the tower pool 6.

[0072] Two branch pipes 74 are provided on the first support rod 71 , located on both sides of the second support rod 72 , parallel to the second support rod 72 , and spanning across both sides of the groove 73 , for diverting the liquid medicine in the mixing pipe 50 .

[0073] The nozzle 75 is arranged at the outlet of the branch pipe 74 and is detachably connected to the branch pipe 74 for spraying the liquid medicine into the tower pool 6 .

[0074] The branch pipe 74 on the first support rod 71 and the branch pipe 74 on the second support rod 72 divert the liquid medicine from the mixing pipe 50 to their respective nozzles 75 , thereby achieving the purpose of uniformly transporting the liquid medicine and reducing corrosion damage to the inner wall of the tower pool 6 .

[0075] Specifically, Figure 1As shown, the present embodiment also includes: a PLC control cabinet 1, which is controlled and connected with the first dosing device 2, the second dosing device 3, and the third dosing device 4. Specifically, the PLC control cabinet 1 is controlled and connected with the first dosing tank 21 and the first dosing pump 22, and is used to control the first dosing tank 21 to mix the solvent with the circulating water within a preset first time to obtain the first liquid medicine, and output a control signal to the first dosing pump 22, and the first dosing pump 22 is used to transport the first liquid medicine to the mixer 5. This control process belongs to the existing known technology and will not be described in detail. Then, the control method of the PLC control cabinet 1 with the first dosing tank 21 and the second dosing pump 32, and the control method of the PLC control cabinet 1 with the third dosing tank and the third dosing pump is also the same, which will not be repeated here. In this way, the first dosing device 2, the second dosing device 3, and the third dosing device 4 are controlled to be configured with different liquid medicines in different time periods, so as to achieve the purpose of automatic configuration and automatic delivery of liquid medicines.

[0076] Please combine Figure 1-Figure 3 Taking the delivery of the first liquid medicine as an example, the process and principle of delivering the liquid medicine in this embodiment are described as follows:

[0077] The PLC control cabinet 1 controls the start-up of the related auxiliary equipment of the first dosing tank 21, adds the first solvent into the first dosing tank 21, and mixes the first solvent with the circulating water inside it to obtain the first liquid medicine. Then the first dosing pump 22 is controlled to start and deliver the first liquid medicine to the mixer 5 through the first delivery pipe 23. After the first liquid medicine is cyclically dispersed and collected by the blades 52 with a trapezoidal cross section in the mixer 5, the first solvent is fully mixed with the circulating water. Then the first liquid medicine is delivered to the branch pipe 74 by the mixing pipe 50, and the nozzle 75 sprays the first liquid medicine into the tower pool 6 on the frame-type first support rod 71 and the second support rod 72. The concentration of the solvent in the first liquid medicine after mixing in the mixer 5 is always within the qualified index range, which greatly reduces the corrosion damage to subsequent equipment and pipelines and prolongs the service life of the system.

[0078] This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims

1. A cooling tower dosing system, used for delivering a variety of liquid medicines to a cooling tower pool (6) in different time periods, characterized in that: include: A first dosing device (2), a second dosing device (3), a third dosing device (4) and a mixer (5), wherein the first dosing device (2), the second dosing device (3) and the third dosing device (4) are connected to the mixer (5) via pipelines; the mixer (5) is used to uniformly mix the drug solution by multiple dispersions and collections; The spray assembly (7) is fixedly arranged at the inlet of the tower pool (6), connected to the mixer (5) through a pipeline, and is used to spray a variety of liquid medicines into the tower pool (6).

2. The cooling tower dosing system according to claim 1, characterized in that: The mixer (5) comprises: A shell (51) is connected to the first dosing device (2), the second dosing device (3) and the third dosing device (4) through pipelines, and is used to collect liquid medicine; The blade (52) is spirally shaped and is disposed in the shell (51). Its edge side wall is welded to and completely contacts the inner wall of the shell (51), and forms a flow channel space with the shell (51) for uniformly mixing the liquid medicine in the flow channel by means of dispersion and concentration in an alternating manner. The mixing pipe (50) is arranged at the outlet of the housing (51) and is connected to the spray assembly (7) for conveying the mixed liquid medicine to the spray assembly (7).

3. The cooling tower dosing system according to claim 2, characterized in that: The blade (52) has a trapezoidal cross section.

4. The cooling tower dosing system according to claim 2, characterized in that: The first dosing device (2) comprises: A first dosing tank (21); The first dosing pump (22) has an inlet connected to the first dosing tank (21) pipeline, and an outlet connected to a first delivery pipe (23), and the outlet of the first delivery pipe (23) is connected to the mixer (5).

5. The cooling tower dosing system according to claim 4, characterized in that: The second dosing device (3) comprises: A second dosing tank (31); The inlet of the second dosing pump (32) is connected to the pipeline of the second dosing tank (31), and the outlet is connected to the second delivery pipe (33), and the outlet of the second delivery pipe (33) is connected to the mixer (5).

6. The cooling tower dosing system according to claim 5, characterized in that: The third dosing device (4) comprises: The third dosing tank (41); A third dosing pump (42), the inlet of which is connected to the pipeline of the third dosing tank (41), and the outlet of which is connected to a third delivery pipe (43), and the outlet of the third delivery pipe (43) is connected to the mixer (5); the third delivery pipe (43), the second delivery pipe (33) and the first delivery pipe (23) are connected in parallel at the inlet of the mixer (5).

7. The cooling tower dosing system according to claim 6, characterized in that: The diameter D0 of the mixer (5) and the diameter D1 of the first delivery pipe (23), the diameter D2 of the second delivery pipe (33), and the diameter D3 of the third delivery pipe (43) satisfy the following relationship: D0≥2D1; or D0≥2D2; or D0≥2D3.

8. The cooling tower dosing system according to claim 7, characterized in that: The diameter D0 of the mixer (5) is 35 cm, the diameter D1 of the first delivery pipe (23), the diameter D2 of the second delivery pipe (33), and the diameter D3 of the third delivery pipe (43) are all 15 cm.

9. The cooling tower dosing system according to claim 2, characterized in that: The spray assembly (7) comprises: A first support rod (71) is arranged on the inlet nozzle (61) of the tower pool (6), and its two ends are respectively welded to the inner wall of the inlet nozzle (61); A second support rod (72), the ends of which are welded to the inner wall of the inlet nozzle (61), located on both sides of the first support rod (71) and perpendicular to the first support rod (71), and the middle part of which is buckled and matched with the middle part of the first support rod (71); A groove (73) is provided in the first support rod (71) and is used for accommodating the mixing pipe (50); Two branch pipes (74) are provided on the first support rod (71), located on both sides of the second support rod (72), parallel to the second support rod (72), and spanning across both sides of the groove (73), and are used to divert the liquid medicine in the mixing tube (50); A spray head (75) is arranged at the outlet of the branch pipe (74), is detachably connected to the branch pipe (74), and is used to spray the liquid medicine into the tower pool (6).

10. The cooling tower dosing system according to claim 9, characterized in that: Also includes: A PLC control cabinet (1), wherein the PLC control cabinet (1) is control-connected with the first dosing device (2), the second dosing device (3), and the third dosing device (4).

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