System for measuring liquid holdup of wet string grid section
By designing a system for air supply, spray, droplet collection and liquid holding mechanisms for chord gates, the dynamic water film quality of the chord gate section is accurately measured, which solves the problem of difficult to quantify the characteristic parameters of water films in the prior art, and promotes the optimization of water film dust capture efficiency.
Patent Information
- Application Number
- CN202422524713.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The prior art is difficult to accurately measure the quality of the dynamic water film of the wet string gate section, which makes it difficult to quantify the characteristic parameters of the water film at the string gate section, affecting the optimization of the dust capture efficiency of the water film.
A system including an air supply mechanism, a spray mechanism, a droplet collection mechanism and a chord gate liquid holding mechanism is designed. By measuring the total water consumption weight, untouched water weight and dynamic water film weight of the dynamic water film formed by the fog droplet group contacting the chord gate plate, the accuracy of the dynamic water film weight is judged, and then the characteristic parameters of the chord gate section are characterized.
The accurate measurement of the quality of the water film at the chord gate section is achieved, providing a foundation for revealing the macro-control mechanism of water film characteristics and verifying the optimization method of dust capture efficiency, and improving the accuracy and reliability of the measurement.
Smart Images
Figure CN223221206U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wet dust removal, in particular to a system for measuring the liquid holding capacity of a wet string grid section. Background Art
[0002] Efficient fine dust control is a major challenge in disaster prevention and control science and engineering. Wet chord-grid dynamic water film dust removal technology combines the dual effects of droplet swarm dust reduction and chord-grid dynamic water film dust capture. This technology offers high overall dust removal efficiency, low dust removal resistance, and easy maintenance, potentially breaking through existing technological bottlenecks. Numerous studies have demonstrated that dust reduction efficiency is directly related to droplet size, gas-liquid ratio, and wind speed. The chord-grid dynamic water film dust capture process involves the continuous collision of spray droplets with the chord-grid surface under the influence of dust-laden wind currents, forming a downward-flowing, pseudo-equilibrium dynamic water film across the chord-grid cross-section that captures dust. Currently, limited research exists on the efficiency of chord-grid water film dust capture and optimization approaches. In particular, the mechanisms underlying the dynamic characteristics of the water film across the chord-grid cross-section remain largely unexplored. This is primarily due to the mesoscopic nature of the water film across the chord-grid cross-section and its constant, pseudo-equilibrium state of flow, making it difficult to quantify the characteristic parameters of the water film across the entire cross-section.
[0003] The dynamic water film on the chord section has a small scale and changes rapidly. Existing technology usually uses digital imaging to record the water film image of a small local area of the chord section, and uses biological open source software to analyze and process the water film morphological scale of the local 30mm area of the chord section. However, this cannot be used as an effective parameter to characterize the water film characteristics of the entire chord section. Utility Model Content
[0004] The technical problem to be solved by the present invention is to provide a system for measuring the liquid holding capacity of a wet string screen section, accurately measuring the quality of the dynamic water film of the string screen section, and laying an important foundation for characterizing the characteristic parameters of the water film of the string screen section, revealing the macro-control mechanism of the water film characteristics, and verifying the optimization method of the water film dust collection efficiency.
[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a system for measuring the liquid holding capacity of a wet string-grid cross-section, comprising: an air supply mechanism, a spray mechanism, a droplet collection mechanism, and a string-grid liquid holding mechanism; the spray mechanism is arranged between the air supply mechanism and the droplet collection mechanism, the string-grid liquid holding mechanism is arranged above the droplet collection mechanism, the spray mechanism is provided with a nozzle for generating a group of droplets, the string-grid liquid holding mechanism is provided with a string-grid plate for absorbing the droplet group and forming a water film, the air supply mechanism is provided with a horizontal air duct for conducting the air flow field, and the horizontal air duct and the string-grid plate are arranged on both sides of the nozzle in a one-to-one correspondence.
[0006] The beneficial effect of the present invention is that the nozzle is conducive to the contact of the generated droplet group with the cross-section of the chord grid plate under the wind flow field conducted by the horizontal air duct, forming a dynamic water film that continuously flows downward on the cross-section of the chord grid plate, and the spray mechanism, the droplet collection mechanism and the chord grid liquid holding mechanism respectively measure the total water consumption weight of the dynamic water film, the weight of the water that does not touch the chord grid plate and the weight of the water of the dynamic water film, and judge whether the measurement of the dynamic water film weight on the chord grid plate is accurate based on the relationship between the three, thereby laying an important foundation for characterizing the characteristic parameters of the water film on the chord grid section, revealing the macro-control mechanism of the water film characteristics and verifying the optimization method of the water film dust collection efficiency.
[0007] On the basis of the above technical solution, the present invention can also be improved as follows.
[0008] Furthermore, the air supply mechanism also includes an air supply pipe bracket and an axial flow fan; the axial flow fan is arranged inside the horizontal air duct at one end away from the spray mechanism, and the horizontal air duct is horizontally arranged at the top of the air supply pipe bracket.
[0009] The beneficial effect of adopting the above further scheme is that the axial flow fan combined with the horizontal air duct is conducive to making the water film on the string screen section affected by the wind flow disturbance, showing the real state of the dynamic water film of the string screen during wet string screen dust removal.
[0010] Furthermore, the spray mechanism also includes: a first electronic balance, a water tank, a water supply pipe and a water pump; the water tank is arranged on the first electronic balance, the water tank and the water pump are connected through the water supply pipe, and the nozzle is arranged above the water pump and connected to the water pump through the water supply pipe.
[0011] The beneficial effects of adopting the above further solution are: the first electronic balance is conducive to measuring the reduction in water volume in the water tank, and the water pump and the water supply pipe are conducive to transporting the water in the water tank to the nozzle to form a group of droplets for spraying.
[0012] Furthermore, the nozzle is arranged toward the chord grid plate.
[0013] The beneficial effect of adopting the above further solution is that it is conducive to blowing the sprayed droplet group towards the chord grid plate under the action of the wind flow field, and forming a dynamic water film at the cross section of the chord grid plate.
[0014] Furthermore, the droplet collecting mechanism includes: a second electronic balance, a droplet collecting water tank and a collecting funnel; the collecting funnel is mounted at the top opening of the droplet collecting water tank, and the droplet collecting water tank is arranged on the second electronic balance.
[0015] The beneficial effect of adopting the above further solution is that the collecting funnel is conducive to receiving the mist droplets that have not collided with the chord grid plate and the liquid droplets flowing out of the chord grid plate, and their mass is measured by the second electronic balance.
[0016] Furthermore, the string grid liquid holding mechanism also includes: an electronic balance bracket, a third electronic balance and a U-shaped stainless steel plate; the third electronic balance is arranged on the top of the electronic balance bracket, and the U-shaped stainless steel plate is arranged on the third electronic balance and connected to the string grid plate.
[0017] The beneficial effects of adopting the above further solution are: the third electronic balance is conducive to measuring the increase in the dynamic water film mass on the chord grid section, and the U-shaped stainless steel plate is conducive to hanging the chord grid on the third electronic balance for weight measurement.
[0018] Furthermore, the open end of the U-shaped stainless steel plate is downward, the U-shaped stainless steel plate passes through the top of the electronic balance bracket, the chord grid is connected to the open end of the U-shaped stainless steel plate, and the top inner wall of the U-shaped stainless steel plate is set on the third electronic balance.
[0019] The beneficial effect of adopting the above further solution is that it is conducive to achieving the weight measurement of the dynamic water film on the cross section of the chord grid while ensuring that the third electronic balance is stably placed on the top of the electronic balance bracket.
[0020] Furthermore, the chord grid plate is vertically arranged above the collecting funnel.
[0021] The beneficial effect of adopting the above further solution is that after the dynamic water film is formed on the chord grid section, the droplet group that continuously enters the chord grid section is guided to the droplet collection mechanism for weight measurement. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present utility model;
[0023] Figure 2 A side view of the string-grid liquid holding mechanism provided in an embodiment of the present utility model.
[0024] in, Figure 1 The arrows in the figure indicate the direction of the wind flow field.
[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0026] 1. Air supply mechanism; 2. Spray mechanism; 3. Droplet collection mechanism; 4. Grid liquid holding mechanism; 11. Air supply duct bracket; 12. Horizontal air duct; 13. Axial fan; 21. First electronic balance; 22. Water storage tank; 23. Water supply pipe; 24. Water pump; 25. Nozzle; 31. Second electronic balance; 32. Droplet collection tank; 33. Collection funnel; 41. Grid plate; 42. Electronic balance bracket; 43. Third electronic balance; 44. U-shaped stainless steel plate. DETAILED DESCRIPTION
[0027] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0028] like Figure 1 As shown, a system for measuring the liquid holdup of a wet chord-grid cross-section comprises: an air supply mechanism 1, a spray mechanism 2, a droplet collection mechanism 3, and a chord-grid liquid holding mechanism 4; the spray mechanism 2 is disposed between the air supply mechanism 1 and the droplet collection mechanism 3, the chord-grid liquid holding mechanism 4 is disposed above the droplet collection mechanism 3, the spray mechanism 2 is provided with a nozzle 25 for generating a droplet group, the chord-grid liquid holding mechanism 4 is provided with a chord-grid plate 41 for absorbing the droplet group and forming a water film, the air supply mechanism 1 is provided with a horizontal air duct 12 for conducting the air flow field, and the horizontal air duct 12 and the chord-grid plate 41 are disposed on both sides of the nozzle 25 in a one-to-one correspondence.
[0029] The beneficial effect of the present invention is that the nozzle is conducive to the contact of the generated droplet group with the cross-section of the chord grid plate under the wind flow field conducted by the horizontal air duct, forming a dynamic water film that continuously flows downward on the cross-section of the chord grid plate, and the spray mechanism, the droplet collection mechanism and the chord grid liquid holding mechanism respectively measure the total water consumption weight of the dynamic water film, the weight of the water that does not touch the chord grid plate and the weight of the water of the dynamic water film, and judge whether the measurement of the dynamic water film weight on the chord grid plate is accurate based on the relationship between the three, thereby laying an important foundation for characterizing the characteristic parameters of the water film on the chord grid section, revealing the macro-control mechanism of the water film characteristics and verifying the optimization method of the water film dust collection efficiency.
[0030] Preferably, Figure 1 As shown, the air supply mechanism 1 further includes an air supply pipe bracket 11 and an axial flow fan 13 ; the axial flow fan 13 is arranged inside the horizontal air duct 12 at one end away from the spray mechanism 2 , and the horizontal air duct 12 is horizontally arranged at the top of the air supply pipe bracket 11 .
[0031] It should be noted that: in the technical solution of the present invention, the axial flow fan 13 determines the wind speed of the air supply by frequency modulation.
[0032] The beneficial effect of adopting the above preferred solution is that the axial flow fan combined with the horizontal air duct is conducive to making the water film on the string screen section affected by the wind flow disturbance, showing the true state of the dynamic water film of the string screen during wet string screen dust removal.
[0033] Preferably, Figure 1As shown, the spray mechanism 2 also includes: a first electronic balance 21, a water tank 22, a water supply pipe 23 and a water pump 24; the water tank 22 is arranged on the first electronic balance 21, and the water tank 22 and the water pump 24 are connected through the water supply pipe 23. The nozzle 25 is arranged above the water pump 24 and is connected to the water pump 24 through the water supply pipe 23.
[0034] It should be noted that, in the technical solution of the present invention, the water pump 24 adjusts the spray pressure of the nozzle 25 by adjusting the knob.
[0035] The beneficial effects of adopting the above preferred solution are: the first electronic balance is conducive to measuring the reduction in water volume in the water tank, and the water pump and the water supply pipe are conducive to transporting the water in the water tank to the nozzle to form a group of droplets for spraying.
[0036] Preferably, Figure 1 As shown, the nozzle 25 is disposed toward the chord grid plate 41 .
[0037] The beneficial effect of adopting the above preferred solution is that it is conducive to blowing the sprayed droplets toward the chord grid plate under the action of the wind flow field and forming a dynamic water film at the cross section of the chord grid plate.
[0038] Preferably, Figure 1 As shown, the droplet collection mechanism 3 includes: a second electronic balance 31, a droplet collection water tank 32 and a collection funnel 33; the collection funnel 33 is mounted at the top opening of the droplet collection water tank 32, and the droplet collection water tank 32 is set on the second electronic balance 31.
[0039] The beneficial effect of adopting the above preferred solution is that the collecting funnel is conducive to receiving the mist droplets that have not collided with the chord grid plate and the liquid droplets flowing out of the chord grid plate, and measuring their mass through the second electronic balance.
[0040] Preferably, Figure 1 and Figure 2 As shown, the string grid liquid holding mechanism 4 also includes: an electronic balance bracket 42, a third electronic balance 43 and a U-shaped stainless steel plate 44; the third electronic balance 43 is arranged on the top of the electronic balance bracket 42, and the U-shaped stainless steel plate 44 is arranged on the third electronic balance 43 and connected to the string grid plate 41.
[0041] The beneficial effects of adopting the above preferred solution are: the third electronic balance is conducive to measuring the increase in the dynamic water film mass on the cross section of the chord grid, and the U-shaped stainless steel plate is conducive to hanging the chord grid on the third electronic balance for weight measurement.
[0042] Preferably, Figure 1 and Figure 2As shown, the open end of the U-shaped stainless steel plate 44 is downward, the U-shaped stainless steel plate 44 passes through the top end of the electronic balance bracket 42, the chord grid 41 is connected to the open end of the U-shaped stainless steel plate 44, and the top inner wall of the U-shaped stainless steel plate 44 is set on the third electronic balance 43.
[0043] The beneficial effect of adopting the above preferred solution is that it is conducive to achieving the weight measurement of the dynamic water film on the cross section of the chord grid while ensuring that the third electronic balance is stably placed on the top of the electronic balance bracket.
[0044] Preferably, Figure 1 As shown, the chord grid plate 41 is vertically arranged above the collecting funnel 33 .
[0045] The beneficial effect of adopting the above preferred solution is that after the dynamic water film is formed on the chord grid section, the droplet group that continuously enters the chord grid section is guided to the droplet collection mechanism for weight measurement.
[0046] The working process and working principle of the utility model are introduced below:
[0047] like Figure 1 and Figure 2 As shown, the axial flow fan 13 is started, forming a relatively stable airflow field through the horizontal air duct 12, continuously blowing the droplet group produced by the nozzle 25 onto the cross section of the chord plate 41. During this process, the first electronic balance 21 measures the decrease in water content in the water storage tank 22, represented by M1. The third electronic balance 43 measures the increase in the mass of the water film on the cross section of the chord plate 41, that is, the mass of the liquid held up by the chord plate cross section, represented by M2. The second electronic balance 31 measures the total mass of the droplets that do not collide with the chord plate 41 and the total mass of the liquid that flows from the chord plate 41 into the collection funnel 33, represented by M3.
[0048] By verifying whether M1 is equal to M2+M3, we can determine whether the measurement of M2 is accurate and can be used for subsequent experiments.
[0049] To accurately measure the mass of the liquid holdup M2 on the chord cross section, it takes a certain amount of time for the nozzle 25 to generate a group of droplets under the action of the air supply mechanism 1. It takes a certain amount of time for a relatively stable dynamic water film to form on the cross section of the chord plate 41. Therefore, when determining and verifying the mass value M2 of the liquid holdup on the chord cross section, it is best to control it after the nozzle 25 generates the droplet group for 60 seconds.
[0050] The system of the utility model measures the mass M2 of the dynamic water film on the chord grid section, which can be converted into the volume of the water film. The spatial filling rate of the water film on the chord grid section is further calculated, and a new method for characterizing the characteristic parameters of the water film on the chord grid section is obtained. This method helps to reveal the macro-control mechanism of the water film characteristics under the influence of multiple factors such as wind disturbance, spray pressure, droplet particle size, hydrophobicity of the chord grid surface, chord grid spacing and chord grid diameter of the chord grid section, and verify the optimization method of the water film dust capture efficiency.
[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A system for measuring the liquid holding capacity of a wet string grid section, characterized in that: include: An air supply mechanism (1), a spray mechanism (2), a droplet collection mechanism (3) and a chord grid liquid holding mechanism (4); the spray mechanism (2) is arranged between the air supply mechanism (1) and the droplet collection mechanism (3), the chord grid liquid holding mechanism (4) is arranged above the droplet collection mechanism (3), the spray mechanism (2) is provided with a nozzle (25) for generating a group of droplets, the chord grid liquid holding mechanism (4) is provided with a chord grid plate (41) for absorbing the group of droplets and forming a water film, the air supply mechanism (1) is provided with a horizontal air duct (12) for conducting a wind flow field, and the horizontal air duct (12) and the chord grid plate (41) are arranged on both sides of the nozzle (25) in a one-to-one correspondence.
2. A system for measuring liquid holdup of a wet string grid section according to claim 1, characterized in that: The air supply mechanism (1) further comprises an air supply pipe bracket (11) and an axial flow fan (13); the axial flow fan (13) is arranged inside the horizontal air pipe (12) at one end away from the spray mechanism (2), and the horizontal air pipe (12) is horizontally arranged at the top end of the air supply pipe bracket (11).
3. A system for measuring liquid holdup of a wet string grid section according to claim 1, characterized in that: The spray mechanism (2) further comprises: a first electronic balance (21), a water storage tank (22), a water supply pipe (23) and a water pump (24); the water storage tank (22) is arranged on the first electronic balance (21), the water storage tank (22) and the water pump (24) are connected via the water supply pipe (23), and the nozzle (25) is arranged above the water pump (24) and connected to the water pump (24) via the water supply pipe (23).
4. A system for measuring liquid holdup of a wet string grid section according to claim 1, characterized in that: The nozzle (25) is arranged toward the chord grid plate (41).
5. The system for measuring the liquid holdup of a wet string grid section according to claim 1, characterized in that: The droplet collection mechanism (3) comprises: a second electronic balance (31), a droplet collection water tank (32) and a collection funnel (33); the collection funnel (33) is mounted at the top opening of the droplet collection water tank (32), and the droplet collection water tank (32) is arranged on the second electronic balance (31).
6. A system for measuring liquid holdup of a wet string grid section according to claim 5, characterized in that: The string grid liquid holding mechanism (4) further comprises: an electronic balance bracket (42), a third electronic balance (43) and a U-shaped stainless steel plate (44); the third electronic balance (43) is arranged on the top end of the electronic balance bracket (42), and the U-shaped stainless steel plate (44) is arranged on the third electronic balance (43) and connected to the string grid plate (41).
7. A system for measuring liquid holdup of a wet string grid section according to claim 6, characterized in that: The open end of the U-shaped stainless steel plate (44) is downward, the U-shaped stainless steel plate (44) passes through the top end of the electronic balance bracket (42), the chord grid plate (41) is connected to the open end of the U-shaped stainless steel plate (44), and the inner wall of the top end of the U-shaped stainless steel plate (44) is arranged on the third electronic balance (43).
8. The system for measuring the liquid holdup of a wet string grid section according to claim 6, characterized in that: The chord grid plate (41) is vertically arranged above the collecting funnel (33).