CN112275468B - Charge device for polarization of nonpolar or weak-polarity liquid - Google Patents
Charge device for polarization of nonpolar or weak-polarity liquid Download PDFInfo
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- CN112275468B CN112275468B CN202010942139.3A CN202010942139A CN112275468B CN 112275468 B CN112275468 B CN 112275468B CN 202010942139 A CN202010942139 A CN 202010942139A CN 112275468 B CN112275468 B CN 112275468B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
Abstract
The invention provides a charging device for polarization of non-polar or weak-polar liquid, which comprises an outer shell, an inner shell and a polarization unit, wherein the outer shell is provided with a plurality of through holes; the outer shell is wrapped outside the inner shell, and an inner cavity is formed in the inner shell; the outer shell comprises a detachable upper outer shell and a detachable lower outer shell, and the inner shell comprises a detachable upper inner shell and a detachable lower inner shell; the inner shell comprises an upper inner cavity and a lower inner cavity; the upper outer shell and the upper inner shell are provided with inlets, the lower outer shell and the lower inner shell are provided with outlets, and the polarization unit comprises a charge ring, an electrode, a high-voltage electrostatic generator and a ground pole; the charge ring is positioned in the upper inner cavity, the electrode is positioned in the lower inner cavity and is positioned right below the charge ring, the charge ring is connected with the ground pole, and the electrode is connected with the high-voltage electrostatic generator. The liquid is pretreated by the device, so that the liquid meets the requirements of various electrostatic spraying applications, and other physical and chemical properties of the liquid are not influenced. The invention is high temperature resistant and high pressure resistant, and is suitable for various weak polar or non-polar liquids such as Freon, liquid nitrogen, kerosene, diesel oil and the like.
Description
Technical Field
The invention belongs to the technical field of electrostatic atomization, and particularly relates to a charging device for polarization of nonpolar or weakly polar liquid.
Background
Electrostatic spraying is a new technology developed in recent decades, and is a technology that uses a high-voltage electric technology to atomize liquid through a nozzle and then charges the liquid through different methods to form a population of charged droplets. The technology can control the movement of the liquid drops through an electric field, so that the liquid drops are sprayed on a target in a targeted mode, and the generated fog drops are small in particle size, uniform in size distribution, strong in monodispersity and wide in application prospect. The technology is applied to the fields of combustion, spraying, dust removal, cooling, pesticide spraying and the like.
One key factor affecting spray quality is the charge-to-mass ratio of the liquid, and most of the liquids used in the fields of spray cooling, spray combustion and the like at present are nonpolar, such as: freon for spray cooling, liquid nitrogen, kerosene for spray combustion, gasoline, etc., which are different from polar media in charging mechanism and method. For these non-polar or low-polar liquids, the charge-to-mass ratio is too low, so that a mist field meeting the application requirements cannot be formed by directly performing electrostatic atomization. The previous solution to this problem is: before spraying, an antistatic agent is added to the liquid, thereby increasing the charge-to-mass ratio of the liquid, but this in turn leads to changes in other physical and chemical properties of the liquid, thereby causing other problems.
Refrigerant is widely used for spray cooling because of its excellent cooling performance, but refrigerant is rapidly vaporized under normal temperature and pressure conditions and is difficult to store. Therefore, compared with other nonpolar liquids, the refrigerant has high requirements on the heat preservation characteristic, the pressure bearing characteristic and the sealing performance of the container.
Disclosure of Invention
In view of the above technical problems, the present invention provides a charging device for polarization of non-polar or weakly polar liquid, which pre-treats the liquid by the device, so that the liquid meets the requirements of various electrostatic spraying applications without affecting other physical and chemical properties of the liquid. The invention is high temperature resistant and high pressure resistant, and is suitable for various weak polar or non-polar liquids such as Freon, liquid nitrogen, kerosene, diesel oil and the like.
The technical scheme of the invention is as follows: a charging device for polarizing non-polar or weak-polar liquid comprises an outer shell, an inner shell and a polarizing unit;
the outer shell is wrapped outside the inner shell, and an inner cavity is formed in the inner shell; the outer shell comprises a detachable upper outer shell and a detachable lower outer shell, and the inner shell comprises a detachable upper inner shell and a detachable lower inner shell; the inner shell comprises an upper inner cavity and a lower inner cavity; the upper outer shell and the upper inner shell are provided with inlets, the inlets are provided with first connecting joints, and the first connecting joints of the inlets are connected with inlet valves; the lower outer shell and the lower inner shell are provided with outlets, the outlets are provided with second connecting joints, and the second connecting joints are connected with outlet valves; a sealing structure is arranged between the upper inner shell and the lower inner shell;
the polarization unit comprises a charge ring, an electrode, a high-voltage electrostatic generator and a ground pole; the charge ring is positioned in the upper inner cavity, the electrode is positioned in the lower inner cavity and is positioned right below the charge ring, the charge ring is connected with the ground pole, and the electrode is connected with the high-voltage electrostatic generator.
In the scheme, the inlet valve is connected with the first connecting joint through sealing threads; the first connecting joint is respectively connected with the upper outer shell and the upper inner shell through sealing threads.
In the scheme, the outlet valve is connected with the second connecting joint through sealing threads; and the second connecting joint is respectively connected with the lower outer shell and the lower inner shell through sealing threads.
In the above scheme, a sealing rubber ring is arranged between the upper inner shell and the lower inner shell.
In the scheme, the upper outer shell and the upper inner shell are provided with ground wire connecting ports, the upper outer shell and the upper inner shell are connected with nuts through screws, and the connecting positions of the ground wire connecting ports, the upper outer shell and the upper inner shell are provided with first convex sealing rubber rings; the charge ring is connected with the ground pole through a ground wire connecting port.
In the scheme, the upper outer shell, the upper inner shell, the lower outer shell and the lower inner shell are connected through the screw rod and the nut, and the joint is provided with the second convex sealing rubber ring.
In the scheme, the lower outer shell and the lower inner shell are provided with high-voltage wiring ports, the lower outer shell and the lower inner shell are connected with nuts through screws, and sealing structures are arranged at the joints; the electrode is connected with the high-voltage electrostatic generator through a high-voltage wiring port.
In the above scheme, a ground switch is arranged on the connecting line of the charge ring and the ground pole.
In the above scheme, the outer shell is made of steel.
In the above scheme, the inner shell is made of an insulating material.
Compared with the prior art, the invention has the beneficial effects that: the invention makes corresponding design aiming at low-temperature liquid such as refrigerant, liquid nitrogen and the like: the upper and lower inner shells are made of insulating and heat-insulating materials, so that the device has good heat-insulating performance. The joints are provided with sealing rubber rings, and the connecting threads are sealing threads, so that liquid is prevented from leaking in the operation process of the device. The upper and lower shells are made of high-strength metal and are connected with the upper and lower shells through bolts and nuts, so that the whole cavity has excellent pressure bearing performance, and the requirements of various nonpolar or weak polar liquids on pressure bearing environment and heat preservation performance are met. The invention makes corresponding design aiming at the operation safety of the container: the used valve is a steel core ball valve wrapped by an insulating material, the bearing capacity of the valve is guaranteed when the valve is insulated, the connecting piece is made of a high-strength insulating material, rubber rings are arranged between the metal screw and the stainless steel shell, and the whole device is provided with an electrified metal piece which is not in contact with the metal shell to prevent electric shock. The liquid to be polarized enters the inner cavity through the inlet valve, the liquid is polarized by utilizing the needle-ring electric field generated by the high-voltage electrostatic generator, the liquid charge-mass ratio is improved, the technical problem of front polarization of the electrostatic spray liquid is solved, and the liquid charge-mass ratio after polarization of the charging device can meet various electrostatic spray application requirements. The invention does not need to add any additive, improves the charge-to-mass ratio of the liquid and does not influence other physical and chemical properties of the liquid. The invention is low temperature resistant, high pressure resistant, suitable for various weak polar or non-polar liquids of properties such as freon, liquid nitrogen, kerosene, diesel oil, etc., safe and stable for long-term operation, low operation cost, and can be widely applied to the technical fields of electrostatic spray cooling, combustion, spraying, etc.
Drawings
FIG. 1 is a schematic diagram of the overall mechanism of an embodiment of the present invention;
fig. 2 is a cross-sectional view of a charging device according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a first connection joint according to an embodiment of the present invention.
In the figure: 1. an inlet valve; 2. an upper housing; 3. an upper inner cavity; 4. a first connection joint; 5. a charge ring; 6. a first convex sealing rubber ring; 7. a ground wire connector; 8. a second convex sealing rubber ring; 9. sealing the rubber ring; 10. an electrode; 11. a high-voltage wiring port; 12. a screw; 13. an outlet valve; 14. a lower housing; 15. a lower inner cavity; 16. a ground pole; 17. a high voltage electrostatic generator; 18. a second connection joint; 19. a ground switch; 20. an upper inner cavity; 21. a lower inner cavity.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 and 2 show a preferred embodiment of the charging device for polarization of non-polar or weakly polar liquid, which comprises an outer shell, an inner shell and a polarization unit; the outer shell and the inner shell are approximately spindle-shaped. The outer shell is wrapped outside the inner shell, and an inner cavity is formed in the inner shell; the outer shell comprises an upper outer shell 2 and a lower outer shell 14 which are detachable, and the inner shell comprises an upper inner shell 3 and a lower inner shell 15 which are detachable; the inner shell comprises an upper inner cavity 20 and a lower inner cavity 21; the upper outer shell 2 and the upper inner shell 3 are provided with inlets, the inlets are provided with first connecting joints 4, and the inlet first connecting joints 4 are connected with the inlet valve 1; the lower outer shell 14 and the lower inner shell 15 are provided with outlets, the outlets are provided with second connecting joints 18, and the second connecting joints 18 are connected with the outlet valves 13; a sealing structure is arranged between the upper inner shell 3 and the lower inner shell 15; the polarization unit comprises a charge ring 5, an electrode 10, a high-voltage electrostatic generator 17 and a ground pole 16; the charge ring 5 is positioned in the upper inner cavity 20, the electrode 10 is positioned in the lower inner cavity 21 and is positioned right below the charge ring 5, the charge ring 5 is connected with the ground pole 16, and the electrode 10 is connected with the high-voltage electrostatic generator 17. The charging device can improve the charge-to-mass ratio of the liquid before electrostatic spraying so as to meet the requirements of various electrostatic spraying applications, does not influence other physical and chemical properties of the liquid, and is widely applicable to various nonpolar or weakly polar liquids including low-temperature liquids.
The inlet valve 1 is connected with the first connecting joint 4 through threads, and the threads are sealing threads; the first connecting joint 4 is respectively connected with the upper outer shell 2 and the upper inner shell 3 through threads, and the threads are sealing threads.
The outlet valve 13 is connected with the second connecting joint 18 through sealing threads; the second connection joint 18 is connected with the lower outer shell 14 and the lower inner shell 15 through sealing threads respectively.
And a sealing rubber ring 9 is arranged between the upper inner shell 3 and the lower inner shell 15.
The upper outer shell 2 and the upper inner shell 3 are provided with ground wire connecting ports 7, the upper outer shell 2 and the upper inner shell 3 are connected with nuts through screws, and the connecting positions are provided with first convex sealing rubber rings 6; the screw extends into the upper inner cavity 20 and is connected with the charge ring 5 through threads; the charge ring 5 is connected to a ground electrode 16 through a ground connection port 7.
The two sides of the upper outer shell 2, the upper inner shell 3, the lower outer shell 14 and the lower inner shell 15 are connected through a screw and a nut, and a second convex sealing rubber ring 8 is arranged at the joint.
The lower shell 14 and the lower inner cavity 21 are provided with high-voltage wiring ports 11, the lower shell 14 and the lower inner cavity 21 are connected with nuts through screws, and sealing structures are arranged at the joints; the screw extends into the lower inner cavity 21 and is connected with the electrode 10 through threads, and the electrode 10 is connected with the high-voltage electrostatic generator 17 through the high-voltage wiring port 11.
And a ground switch 19 is arranged on a connecting line of the charge ring 5 and the ground electrode 16.
The inlet valve 1 and the outlet valve 13 are both steel core internal thread ball valves coated with insulating materials, such as ppr internal thread steel core ball valves; the upper shell 2 and the lower shell 14 form a pressure-bearing outer cavity and are made of high-strength metal materials with certain thickness, such as stainless steel and cast iron; the upper inner cavity 20 and the lower inner cavity 21 form a charge inner cavity, and are made of insulating materials with certain thickness, such as ceramic and polytetrafluoroethylene; the first convex sealing rubber ring 6, the second convex sealing rubber ring 8 and the sealing rubber ring 9 are made of low-temperature-resistant and corrosion-resistant rubber, such as fluorosilicone rubber, and the outer diameters of the round platforms of the first convex sealing rubber ring 6 and the second convex sealing rubber ring 8 are larger than the major diameter of the nut. The first connecting joint 4 and the second connecting joint 18 are made of high-strength insulating materials, and the first connecting joint 4 is provided with three groups of sealing threads which are respectively connected with the inlet valve 1, the upper outer shell 2 and the upper inner shell 3. And the second connecting joint 18 is respectively provided with three groups of sealing threads which are respectively connected with the outlet valve 13, the lower outer shell 14 and the lower inner shell 15.
The charge ring 5 and the needle-shaped electrode 10 are both copper electrodes; the electrode 10 points to the center of the charge ring 5; the distance between the electrode 10 and the charge ring 5 can be adjusted by replacing the electrode 10 with different length sizes; the charge ring 5 is a metal ring with a certain thickness, and the size of the metal ring is slightly smaller than the diameter of the inner cavity.
The working process of the invention is as follows: in the initial stage, the ground wire interface 7 is electrically connected with the ground level 16, the high-voltage wiring port 11 is electrically connected with the high-voltage electrostatic generator 17, the outlet valve 13 is closed, the ground wire switch 19 is closed, liquid is injected into the charging device through the inlet valve 1, the inlet valve 1 is closed, the ground wire switch 19 is opened, the power supply of the high-voltage electrostatic generator 17 is opened, the charging device is placed statically, and the specific standing time is selected according to the requirement and is generally 20-60 min. The ground switch 19 is closed, the power supply of the high-voltage electrostatic generator 17 is closed, the outlet valve 13 is opened, the liquid flows out, and the whole polarization process is finished.
In the present embodiment, the switching operation procedure needs to be performed strictly in the above sequence, and if the high voltage electrostatic generator 17 is turned off before the ground switch 19 is turned off, the charge will be transferred along the ground, resulting in failure of the polarization process.
In the embodiment, the high-voltage electrostatic generator 17 controls the electrostatic voltage in the charge cavity, and the liquid can reach the charge-to-mass ratio meeting different requirements by controlling the charge duration and the electrostatic voltage. The high-voltage electrostatic generator 17 can adopt the existing common structural form, can generate 0-50 kv voltage, and the specific generated voltage can be determined according to the requirement, which is not described herein again.
The charging device for polarization of nonpolar or weak polar liquid solves the technical problem of front polarization of electrostatic spray liquid. The liquid charge-to-mass ratio after polarization by the charging device can meet various electrostatic spraying application requirements, and the size of the liquid charge-to-mass ratio can be selected according to specific conditions by combining voltage and polarization time. The invention is designed correspondingly for low-temperature liquid such as refrigerant, liquid nitrogen and the like. The upper and lower inner shells are made of insulating and heat-insulating materials, so that the device has good heat-insulating performance. The joints are provided with sealing rubber rings, and the connecting threads are sealing threads, so that liquid is prevented from leaking in the operation process of the device. The upper and lower shells are made of high-strength metal and are connected with the upper and lower outer cavities through bolts and nuts, and the whole cavity has excellent pressure-bearing performance. The requirements of various nonpolar or weak polar liquids on the pressure-bearing environment and the heat-insulating performance are met. The invention makes corresponding design aiming at the operation safety of the container: the used valve is a steel core ball valve wrapped by an insulating material, and the pressure bearing capacity of the valve is guaranteed while the valve is insulated. The connecting piece material selects the insulating material of high strength, all sets up the rubber circle between metal screw and the stainless steel shell, and whole device electrified metalwork does not contact with metal casing, prevents to electrocute the incident and takes place. According to the invention, no additive is required to be added, the charge-to-mass ratio of the liquid is improved, and no influence is generated on other physical and chemical properties of the liquid. The invention is low temperature resistant, high pressure resistant, suitable for various weak polar or non-polar liquids of properties such as freon, liquid nitrogen, kerosene, diesel oil, etc., safe and stable for long-term operation, low operation cost, and can be widely applied to the technical fields of electrostatic spray cooling, combustion, spraying, etc.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A charging device for polarizing non-polar or weak-polar liquid is characterized by comprising an outer shell, an inner shell and a polarizing unit;
the outer shell is wrapped outside the inner shell, and an inner cavity is formed in the inner shell; the outer shell comprises an upper outer shell (2) and a lower outer shell (14) which are detachable, and the inner shell comprises an upper inner shell (3) and a lower inner shell (15) which are detachable; the inner shell comprises an upper inner cavity (20) and a lower inner cavity (21); the upper outer shell (2) and the upper inner shell (3) are provided with inlets, the inlets are provided with first connecting joints (4), and the inlet first connecting joints (4) are connected with the inlet valve (1); the lower outer shell (14) and the lower inner shell (15) are provided with outlets, the outlets are provided with second connecting joints (18), and the second connecting joints (18) are connected with the outlet valves (13); a sealing structure is arranged between the upper inner shell (3) and the lower inner shell (15);
the polarization unit comprises a charge ring (5), an electrode (10), a high-voltage electrostatic generator (17) and a ground pole (16); the charging ring (5) is positioned in the upper inner cavity (20), the electrode (10) is positioned in the lower inner cavity (21) and is positioned right below the charging ring (5), the charging ring (5) is connected with a ground pole (16), and the electrode (10) is connected with a high-voltage electrostatic generator (17).
2. The charging device for polarization of non-polar or weakly polar liquids according to claim 1, characterized in that the inlet valve (1) is connected with the first connection joint (4) by means of a sealing thread; the first connecting joint (4) is respectively connected with the upper outer shell (2) and the upper inner shell (3) through sealing threads.
3. The charging device for polarization of non-polar or weakly polar liquids according to claim 1, characterized in that the outlet valve (13) is connected with the second connection joint (18) by means of a sealing thread; the second connecting joint (18) is respectively connected with the lower outer shell (14) and the lower inner shell (15) through sealing threads.
4. The charging device for polarization of non-polar or weakly polar liquid according to claim 1, wherein a sealing rubber ring (9) is arranged between the upper inner shell (3) and the lower inner shell (15).
5. The charging device for polarization of non-polar or weakly polar liquid according to claim 1, wherein the upper outer shell (2) and the upper inner shell (3) are provided with ground connection ports (7), the upper outer shell (2) and the upper inner shell (3) are connected with nuts through screws, and the connection positions are provided with first convex sealing rubber rings (6); the charge ring (5) is connected with a ground pole (16) through a ground wire connecting port (7).
6. The charging device for polarization of non-polar or weak-polar liquid according to claim 1, wherein the upper outer shell (2), the upper inner shell (3) and the lower outer shell (14) and the lower inner shell (15) are connected at both sides through screws and nuts, and a second convex sealing rubber ring (8) is arranged at the connection position.
7. The charging device for polarization of non-polar or weak-polar liquid according to claim 1, wherein the lower outer shell (14) and the lower inner shell (15) are provided with high-voltage wiring ports (11), the lower outer shell (14) and the lower inner shell (15) are connected with nuts through screws, and sealing structures are arranged at the connection positions; the electrode (10) is connected with a high-voltage electrostatic generator (17) through a high-voltage wiring port (11).
8. The charging device for polarization of non-polar or weakly polar liquid according to claim 1, wherein a ground switch (19) is provided on the connection line of the charging loop (5) and the ground pole (16).
9. The charging device for polarization of non-polar or weakly polar liquid according to claim 1, wherein said outer housing is made of steel.
10. The charging device for polarization of non-polar or weakly polar liquid according to claim 1, wherein the inner housing is made of an insulating material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010942139.3A CN112275468B (en) | 2020-09-09 | 2020-09-09 | Charge device for polarization of nonpolar or weak-polarity liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010942139.3A CN112275468B (en) | 2020-09-09 | 2020-09-09 | Charge device for polarization of nonpolar or weak-polarity liquid |
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| CN112275468A CN112275468A (en) | 2021-01-29 |
| CN112275468B true CN112275468B (en) | 2021-09-10 |
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| CN112432346B (en) * | 2020-12-07 | 2022-02-11 | 珠海格力电器股份有限公司 | Sensor cleaning assembly, sensor and air conditioning system |
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