Multistage turbulence medium-pressure ultraviolet sterilization system
By designing a multi-stage turbulent medium pressure ultraviolet sterilization system, the microbial residence time is extended by using structures such as homogeneous turbulent tubes, capacity expansion and reduction chambers and quartz casings, and multi-spectral ultraviolet rays for sterilization, the problems of poor antibacterial effects and increased energy consumption in the existing technology are solved, and efficient, reliable and economical microbial pollution prevention and control effects are achieved.
Patent Information
- Application Number
- CN202421630921.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-06-28
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing medium-pressure ultraviolet sterilizer has a short microorganism residence time in water at high flow rates, and it is difficult to adapt to the operating conditions of severe fluctuations in the water quality in the incoming water, resulting in poor antibacterial effect and increased energy consumption.
A multi-stage turbulent medium-pressure ultraviolet sterilization system is designed, including a homogeneous turbulent flow tube, a capacity-expanding speed reduction chamber, an ultraviolet sterilization reaction chamber, an outlet flow blocking pipe and several quartz casings. Through the design of the porous structure of different diameters and the cross-sectional area gradually increasing or decreasing, the residence time of microorganisms in the ultraviolet sterilization reaction chamber is extended, and multi-spectral segment ultraviolet rays are used for sterilization.
It has achieved efficient, reliable and economical prevention and control of microbial pollution in the membrane treatment system, improved antibacterial effect, reduced energy consumption, and improved the flexibility and adaptability of the system.
Smart Images
Figure CN222935204U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water treatment, and relates to a multi-stage turbulent medium-pressure ultraviolet sterilization system. Background Art
[0002] The reverse osmosis membrane separation technology is widely used in various water treatment processes. During its operation, the problem of microbial contamination of the reverse osmosis membrane often occurs, resulting in problems such as a decrease in the desalination rate of the membrane treatment system, an increase in the water production pressure, frequent membrane cleaning, etc. At the same time, the service lives of the reverse osmosis membrane and the filter elements of the security filter are also significantly shortened, and the operating cost of the system remains high.
[0003] Due to the photoreactivation and dark repair characteristics of microorganisms and their easy generation of drug resistance, the bacteriostatic effect of the traditional chemical dosing method is unstable. At the same time, there is also a risk of oxidative damage to the reverse osmosis membrane due to excessive use of strong oxidizing bactericides. In addition, the use cost of bactericidal agents is relatively high, and it will also endanger the physical health of operating personnel. In recent years, the medium-pressure ultraviolet sterilization technology has begun to attempt to replace the chemical dosing method for bacteriostasis. Its main principle is to use ultraviolet rays with a wavelength range of 200-400 nm generated by medium-pressure multi-spectrum ultraviolet lamps to irradiate various bacteria and microorganisms in the water body, destroy their DNA structures, and make them lose their self-reproduction ability, thereby achieving the purpose of bacteriostasis.
[0004] The ultraviolet radiation dose and irradiation time received by microorganisms in the cavity of the ultraviolet sterilizer are important factors determining their killing rate. Therefore, a high-performance medium-pressure ultraviolet sterilizer should ensure that each microorganism in the water receives enough ultraviolet radiation dose and long enough irradiation time. For the medium-pressure ultraviolet sterilizer products on the current market, in order to minimize their floor area as much as possible, their cavities are generally designed as short-range straight-through tube types. However, at high flow rates, the residence time of microorganisms in the water in the reaction cavity is short, and due to the uneven distribution of microorganisms in the water, the problem of microorganism escape is likely to occur. Selecting a medium-pressure ultraviolet lamp with a higher power can, to a certain extent, alleviate the problem of poor bacteriostatic effect, but at the same time, it brings the problem of increased energy consumption. In addition, the power of the existing medium-pressure ultraviolet sterilizers can only be adjusted within a small range and cannot adapt to the operating conditions with drastic fluctuations in the influent water quality, and the system operation flexibility is poor.
[0005] To solve the above problems, it is necessary to research and develop a multi-stage turbulent medium-pressure ultraviolet sterilization system to achieve the purpose of efficiently, reliably, and economically preventing and controlling the microbial contamination of the membrane treatment system. Summary of the Utility Model
[0006] The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a multi-stage turbulent medium-pressure ultraviolet sterilization system, which can efficiently, reliably, and economically prevent and control the microbial contamination of the membrane treatment system.
[0007] To achieve the above object, the utility model discloses a multi-stage turbulent medium-pressure ultraviolet sterilization system, which includes a homogeneous turbulent pipe, an expansion and deceleration chamber, an ultraviolet sterilization reaction chamber, an effluent choke pipe and a plurality of quartz sleeves;
[0008] The homogeneous turbulent pipe, the expansion and deceleration chamber, the ultraviolet sterilization reaction chamber and the effluent choke pipe are connected in sequence. Along the flow direction of the working medium, each quartz sleeve is arranged in the ultraviolet sterilization reaction chamber in sequence, and an ultraviolet lamp is arranged in each quartz sleeve, and the included angles of each quartz sleeve with the horizontal plane are different.
[0009] Further, the homogeneous turbulent pipe and the expansion and deceleration chamber are connected by a first flange.
[0010] Further, the inside of the homogeneous turbulent pipe is a cross-flow unequal-diameter porous structure.
[0011] Further, the cross-sectional area of the expansion and deceleration chamber gradually increases.
[0012] Further, the cross-sectional area of the outlet of the expansion and deceleration chamber is 2.25 times that of the inlet of the expansion and deceleration chamber.
[0013] Further, along the flow direction of the working medium, the cross-sectional area of the effluent choke pipe gradually decreases.
[0014] Further, it further includes an electric control system, and the electric control system is connected to the control end of the ultraviolet lamp.
[0015] Further, the effluent choke pipe and the ultraviolet sterilization reaction chamber are connected by a second flange.
[0016] Further, the number of the quartz sleeves is three, and the included angles of the three quartz sleeves with the horizontal plane are 90°, 30° and -30° respectively.
[0017] Further, the ultraviolet lamp is a medium-pressure ultraviolet lamp, and the powers of the three ultraviolet lamps are the same. The ultraviolet lamp can excite and generate multi-spectrum ultraviolet rays of 200-400 nm.
[0018] The utility model has the following beneficial effects:
[0019] When the multi-stage turbulent medium-pressure ultraviolet sterilization system described in the utility model is specifically operated, the water to be treated is fully mixed through the homogeneous turbulent pipe, so that the microorganisms in the water are evenly distributed; then, the expansion and deceleration chamber and the effluent choke pipe are used to extend the residence time of the microorganisms in the water in the ultraviolet sterilization reaction chamber; finally, the multi-spectrum ultraviolet rays excited by the ultraviolet lamp in the quartz sleeve in the ultraviolet sterilization reaction chamber are used to irradiate and kill the microorganisms in the water, so as to achieve the purpose of efficiently, reliably and economically preventing and controlling the microbial pollution of the membrane treatment system.
[0020] Furthermore, the homogeneous turbulent flow tube is connected to the expansion and deceleration chamber through a first flange, which is convenient for connection.
[0021] Furthermore, the interior of the homogeneous turbulent flow tube is a cross-flow unequal-diameter porous structure, through which the uniform mixing of water can be achieved.
[0022] Furthermore, the cross-sectional area of the outlet of the expansion and deceleration chamber is 2.25 times that of the inlet of the expansion and deceleration chamber. By gradually increasing the cross-sectional area, the purpose of expansion and speed reduction is achieved.
[0023] Furthermore, the number of the quartz sleeves is three, and the angles between the three quartz sleeves and the horizontal plane are 90°, 30°, and -30° respectively, so that the sterilization can cover the entire cross-section.
[0024] Furthermore, the water outlet flow-blocking tube is connected to the ultraviolet sterilization reaction chamber through a second flange, which is convenient and practical for connection.
[0025] Furthermore, the electric control system is connected to the control ends of the ultraviolet lamps. By adjusting the start-stop and power of each ultraviolet lamp, it can adapt to different water qualities, with relatively high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic structural diagram of the present utility model.
[0027] Among them, 1 is the homogeneous turbulent flow tube, 2 is the expansion and deceleration chamber, 3 is the ultraviolet sterilization reaction chamber, 4 is the water outlet flow-blocking tube, 5 is the quartz sleeve, 6 is the ultraviolet lamp, and 7 is the electric control system. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of the embodiments, and are not intended to limit the scope of the disclosure of the present utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts disclosed in the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] The structural schematic diagrams according to the disclosed embodiments of the present utility model are shown in the accompanying drawings. These figures are not drawn to scale, where for the purpose of clear expression, certain details are enlarged and certain details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual requirements.
[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.
[0031] Embodiment 1
[0032] Reference Figure 1 , the present utility model provides a multi-stage turbulent medium-pressure ultraviolet sterilization system. The multi-stage turbulent medium-pressure ultraviolet sterilization system includes a homogeneous turbulent pipe 1, an expansion and deceleration chamber 2, an ultraviolet sterilization reaction chamber 3, an outlet flow resistance pipe 4, a quartz sleeve 5, an ultraviolet lamp 6, and an electric control system 7;
[0033] The homogeneous turbulent pipe 1, the expansion and deceleration chamber 2, the ultraviolet sterilization reaction chamber 3, and the outlet flow resistance pipe 4 are connected in sequence and communicate with each other.
[0034] As an implementation manner of the present utility model, the homogeneous turbulent pipe 1 is connected to the expansion and deceleration chamber 2 through a first flange. Along the working medium flow direction, the cross-sectional area of the expansion and deceleration chamber 2 gradually increases. The inside of the homogeneous turbulent pipe 1 is a cross-flow unequal-diameter porous structure. Connecting the homogeneous turbulent pipe 1 to the expansion and deceleration chamber 2 through the first flange is relatively convenient and simple. At the same time, it should be noted that the cross-flow unequal-diameter porous structure can effectively achieve the homogenization of water.
[0035] As an implementation manner of the present utility model, the cross-sectional area of the outlet of the expansion and deceleration chamber 2 is 2.25 times that of the inlet of the expansion and deceleration chamber 2, which can achieve the purpose of expanding and decelerating the working medium.
[0036] As an implementation mode of the present utility model, along the water flow direction, each quartz sleeve 5 is sequentially arranged in the ultraviolet sterilization reaction chamber 3, and an ultraviolet lamp 6 is arranged in each quartz sleeve 5, and the angles between each quartz sleeve 5 and the horizontal plane are different. Preferably, the number of the quartz sleeves 5 is three, and the angles between the three quartz sleeves 5 and the horizontal plane are 90°, 30° and -30° respectively, that is, the three quartz sleeves 5 are equally angularly distributed, and the water in the entire ultraviolet sterilization reaction chamber 3 can be sterilized.
[0037] As an implementation mode of the present utility model, along the working medium flow direction, the cross-sectional area of the water outlet flow blocking pipe 4 gradually decreases, and the water outlet flow blocking pipe 4 and the ultraviolet sterilization reaction chamber 3 are connected through a second flange. The water outlet flow blocking pipe 4 and the ultraviolet sterilization reaction chamber 3 are connected through the second flange, and the connection is relatively simple and convenient.
[0038] As an implementation mode of the present utility model, the ultraviolet lamp 6 is a medium-pressure ultraviolet lamp, and the powers of the three ultraviolet lamps 6 are the same. The ultraviolet lamp 6 can excite and generate multi-spectrum ultraviolet rays of 200 - 400 nm.
[0039] As an implementation mode of the present utility model, this embodiment further includes an electric control system 7. The electric control system 7 is connected to the control ends of the ultraviolet lamps 6 and is used to adjust the start-stop and power of the ultraviolet lamps 6. By controlling the start-stop and power of each ultraviolet lamp 6, different water qualities can be adapted.
[0040] Embodiment Two
[0041] This embodiment discloses a working method of a multi-stage turbulent flow medium-pressure ultraviolet sterilization system. The structure of the multi-stage turbulent flow medium-pressure ultraviolet sterilization system is as shown in Embodiment One. The multi-stage turbulent flow medium-pressure ultraviolet sterilization system includes a homogeneous turbulent flow pipe 1, a volume expansion and deceleration chamber 2, an ultraviolet sterilization reaction chamber 3, a water outlet flow blocking pipe 4, an electric control system 7, an ultraviolet lamp 6 and several quartz sleeves 5; the homogeneous turbulent flow pipe 1, the volume expansion and deceleration chamber 2, the ultraviolet sterilization reaction chamber 3 and the water outlet flow blocking pipe 4 are sequentially connected and communicated; the cross-sectional area of the volume expansion and deceleration chamber 2 gradually increases, and the inside of the homogeneous turbulent flow pipe 1 is a cross-flow unequal-diameter porous structure; along the water flow direction, each quartz sleeve 5 is sequentially arranged in the ultraviolet sterilization reaction chamber 3, and an ultraviolet lamp 6 is arranged in each quartz sleeve 5, and the angles between each quartz sleeve 5 and the horizontal plane are different; the cross-sectional area of the water outlet flow blocking pipe 4 gradually decreases, and the water outlet flow blocking pipe 4 and the ultraviolet sterilization reaction chamber 3 are connected through a second flange; the electric control system 7 is connected to the control ends of the ultraviolet lamps 6 and is used to adjust the start-stop and power of the ultraviolet lamps 6.
[0042] Reference Figure 1 , the working method of the multi-stage turbulent flow medium-pressure ultraviolet sterilization system of the present utility model includes the following steps:
[0043] 1) The water to be treated is fully mixed through the homogeneous turbulent pipe 1, so that the microorganisms in the water are evenly distributed.
[0044] 2) The expansion and deceleration cavity 2 and the water outlet flow blocking pipe 4 are used to extend the residence time of the microorganisms in the water in the ultraviolet sterilization reaction cavity 3.
[0045] 3) The ultraviolet lamp 6 in the quartz sleeve 5 in the ultraviolet sterilization reaction cavity 3 is used to excite multi-spectrum ultraviolet rays to irradiate and kill the microorganisms in the water.
[0046] 4) Different numbers of ultraviolet lamps 6 are started and stopped respectively through the electric control system 7, and finally the purpose of efficiently, reliably and economically preventing and controlling the microbial contamination of the membrane treatment system is achieved.
[0047] When the multi-stage turbulent medium-pressure ultraviolet sterilization system of the present utility model is working, the water to be treated is first fully mixed through the homogeneous turbulent pipe 1, so that the microorganisms in the water are evenly distributed; then the expansion and deceleration cavity 2 and the water outlet flow blocking pipe 4 are used to extend the residence time of the microorganisms in the water in the ultraviolet sterilization reaction cavity 3; finally, the medium-pressure ultraviolet sterilization lamp in the quartz sleeve 5 is used to excite multi-spectrum ultraviolet rays to irradiate and kill the microorganisms in the water. Different numbers of ultraviolet lamps are started and stopped respectively through the electric control system, and finally the purpose of efficiently, reliably and economically preventing and controlling the microbial contamination of the membrane treatment system is achieved.
[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present utility model can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present utility model should be covered by the protection scope of the claims of the present utility model.
Claims
1. A multi-stage turbulent medium-pressure ultraviolet sterilization system, characterized in that: It comprises a homogenous turbulent flow tube (1), a volume expansion and deceleration chamber (2), an ultraviolet sterilization reaction chamber (3), a water outlet flow blocking tube (4) and a plurality of quartz sleeves (5); The homogeneous turbulent flow tube (1), the expansion and deceleration chamber (2), the ultraviolet sterilization reaction chamber (3) and the water outlet flow resistance tube (4) are sequentially connected, and along the flow direction of the working medium, each quartz sleeve (5) is sequentially arranged in the ultraviolet sterilization reaction chamber (3), and each quartz sleeve (5) is provided with an ultraviolet lamp (6), and each quartz sleeve (5) has a different angle with the horizontal plane.
2. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1 is characterized in that: The homogeneous turbulent flow tube (1) is connected to the expansion and deceleration chamber (2) via a first flange.
3. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1 is characterized in that: The homogeneous turbulent flow tube (1) has a cross-flow unequal diameter porous structure inside.
4. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1, characterized in that: The cross-sectional area of the expansion deceleration chamber (2) gradually increases.
5. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 4 is characterized in that: The cross-sectional area of the outlet of the expansion and deceleration chamber (2) is 2.25 times the cross-sectional area of the inlet of the expansion and deceleration chamber (2).
6. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1, characterized in that: Along the working medium flow direction, the cross-sectional area of the water outlet choke tube (4) gradually decreases.
7. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1, characterized in that: It also includes an electric control system (7), and the electric control system (7) is connected to the control end of the ultraviolet lamp (6).
8. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1, characterized in that: The water outlet choke tube (4) and the ultraviolet sterilization reaction chamber (3) are connected via a second flange.
9. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 1, characterized in that: The number of the quartz sleeves (5) is three, and the angles between the three quartz sleeves (5) and the horizontal plane are 90°, 30° and -30° respectively.
10. The multi-stage turbulent medium-pressure ultraviolet sterilization system according to claim 9, characterized in that: The ultraviolet lamps (6) are medium-pressure ultraviolet lamps. The three ultraviolet lamps (6) have the same power. The ultraviolet lamps (6) can excite and generate multi-spectrum ultraviolet rays of 200-400nm.