CN108722703B - Reverse spray type washing nozzle - Google Patents
Reverse spray type washing nozzle Download PDFInfo
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- CN108722703B CN108722703B CN201810763235.4A CN201810763235A CN108722703B CN 108722703 B CN108722703 B CN 108722703B CN 201810763235 A CN201810763235 A CN 201810763235A CN 108722703 B CN108722703 B CN 108722703B
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- cylinder
- spiral groove
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- 238000005406 washing Methods 0.000 title claims abstract description 100
- 239000007921 spray Substances 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 116
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000000779 smoke Substances 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 29
- 239000003546 flue gas Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 9
- 238000005507 spraying Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005201 scrubbing Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
Abstract
The invention provides a reverse spray type washing nozzle, which comprises: the nozzle comprises a nozzle body, an adjusting member and a base flange; the nozzle body is provided with a liquid inlet and a liquid outlet; the adjusting member is positioned in the nozzle body and comprises a first member and a second member, the first member is connected with the second member, the first member comprises a cylinder and a cone, the cylinder is connected with the cone, a spiral groove is further formed in the first member and is used for forming rotational flow, the second member comprises a cylinder, the diameter of the cylinder is smaller than that of the cylinder in the first member, threads are further formed in the second member, threads matched with the threads of the second member are arranged at the joint of the central hole of the base flange and the second member of the adjusting member, adjustability of the outlet flow pattern of the reverse spray type washing nozzle is achieved, operation difficulty and complexity of purifying smoke are reduced, and operation efficiency is improved.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a reverse spray type washing nozzle.
Background
In the industrial production processes of oil refining, chemical industry, electric power, metallurgy and the like, a large amount of flue gas containing harmful gases such as sulfides, nitrides, carbon dioxide and the like is inevitably generated, and the environment is greatly harmed. With the increasing importance of environmental protection, the flue gas purification treatment is particularly important for national economy and health and sustainable development.
The wet flue gas scrubbing technology, which adopts liquid detergent and contacts with flue gas in countercurrent, is the most mature and effective method. The reverse jet type scrubber is one of the most commonly used wet flue gas scrubbing devices, at present, one path of axial liquid inlet is arranged under a nozzle, and two paths of symmetrical tangential liquid inlets are arranged on the side face, so that the outlet flow pattern of the reverse jet type scrubbing nozzle is regulated, if the total liquid amount is fixed, the expansion angle (coverage surface) of the liquid flow at the nozzle is increased, the proportion of the axial liquid flow is increased, the axial velocity of the jet flow at the nozzle is increased, the rigidity of the jet flow is larger, and the impact strength is enhanced.
However, in practical application, because of the three-inlet structure, a single nozzle needs to be correspondingly provided with three valves, and the valves of the two tangential inlets need to be synchronously adjusted, otherwise, the outlet liquid flow is deflected to one side due to rotational asymmetry, and the uniformity of the distribution of the washing liquid in the washer is affected. And if the scrubber is large in size, multiple nozzles are used in parallel, which requires multiple valves to be adjusted synchronously, further increasing the difficulty and complexity of operation.
Disclosure of Invention
The invention provides a reverse spray type washing nozzle which is used for solving the problems that when the existing reverse spray type washing nozzle is used for purifying flue gas, a plurality of valves are required to be adjusted synchronously, so that the operation difficulty and the complexity are increased.
The invention provides a reverse spray type washing nozzle, which comprises:
the nozzle comprises a nozzle body, an adjusting member and a base flange;
the nozzle body is fixed on the base flange and is provided with a liquid inlet and a spray outlet;
the adjusting member is positioned inside the nozzle body, and comprises a first member and a second member, and the first member is connected with the second member; the first component comprises a cylinder and a cone, the cylinder is connected with the cone, a spiral groove is formed in the first component, and the spiral groove is used for forming rotational flow; the second member comprises a cylinder, the diameter of the cylinder is smaller than that of the cylinder of the first member, and threads are arranged on the second member;
and threads matched with the threads of the second component are arranged at the joint of the central hole of the base flange and the second component of the adjusting component.
Optionally, the second member is provided with an external mounting thread, and the base flange center hole is provided with an internal mounting thread matched with the external mounting thread of the second member.
Optionally, the nozzle body is further provided with a nozzle fixing flange, and the nozzle body is fixed on the base flange through the nozzle fixing flange.
Optionally, the liquid inlet is opposite to the center line of the nozzle body and is positioned on the side wall below the nozzle body.
Optionally, the ejection port is a protruding hollow columnar body.
Optionally, the ejection orifice is disposed on the nozzle body.
Optionally, the adjusting member divides the nozzle body into a converging swirl chamber and a cylindrical swirl mixing chamber.
Optionally, the reverse spray type washing nozzle further comprises a gasket and a locking nut, and the gasket and the locking nut are used for preventing washing liquid from leaking outwards.
Optionally, the liquid inlet, the ejection outlet, the convergent swirl chamber and the columnar swirl mixing chamber are all communicated.
Optionally, the converging swirl chamber is located above the cylindrical swirl mixing chamber. The embodiment of the invention provides a reverse spray type washing nozzle, which comprises: the nozzle comprises a nozzle body, an adjusting member and a base flange; the nozzle body is fixed on the base flange and is provided with a liquid inlet and a spray outlet; the adjusting member is positioned in the nozzle body, and comprises a first member and a second member which are connected; the first component comprises a cylinder and a cone, the top surface of the cylinder is the bottom surface of the cone, the first component is provided with a spiral groove, and the spiral groove is used for forming rotational flow; the second member comprises a cylinder with a diameter smaller than that of the cylinder of the first member, and the second member is provided with threads; the connecting part of the central hole of the base flange and the second component of the adjusting component is provided with threads matched with the threads of the second component, so that the outlet flow pattern of the reverse spray type washing nozzle is adjusted, the operation difficulty and complexity of purifying the flue gas are reduced, and the operation efficiency is improved.
The invention provides a reverse spray type washing nozzle, which comprises: the nozzle comprises a nozzle body, an adjusting member and a base flange; the nozzle body is provided with a liquid inlet and a spray outlet; the adjusting member is positioned in the nozzle body, and comprises a first member and a second member which are connected; the first component comprises a cylinder and a cone, the top surface of the cylinder is the bottom surface of the cone, the first component is provided with a spiral groove, and the spiral groove is used for forming rotational flow; the second member comprises a cylinder with a diameter smaller than that of the cylinder of the first member, and the second member is provided with threads; the connecting part of the central hole of the base flange and the second component of the adjusting component is provided with threads matched with the threads of the second component, so that the outlet flow pattern of the reverse spray type washing nozzle is adjusted, the operation difficulty and complexity of purifying the flue gas are reduced, and the operation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a half-sectional front view of a reverse spray washing nozzle according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a reverse spray washing nozzle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of a half-sectional front view of a reverse spray type washing nozzle according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the industrial production processes of oil refining, chemical industry, electric power, metallurgy and the like, a great deal of flue gas containing harmful gases such as sulfides, nitrides, carbon dioxide and the like is inevitably generated, so that the environment is greatly harmed. With the increasing importance of environmental protection, the flue gas purification treatment is particularly important for national economy and health and sustainable development.
At present, a wet flue gas washing technology adopting countercurrent contact of liquid detergent and flue gas is the most mature and effective method. The reverse jet scrubber is one of the most commonly used wet flue gas scrubbing devices, wherein a power wave nozzle of the American Meng Moke company is a well-recognized nozzle with excellent performance, and the most remarkable characteristic of the nozzle is that the inner wall of the nozzle is provided with a swirl slot, and the liquid flow can generate tangential momentum at an outlet so as to improve the section coverage rate of the liquid phase in the scrubber; the central part of the nozzle is a straight-through flow passage, which provides enough axial momentum; the morphology of the nozzle outlet flow can be described as "rotational axial flow", however, such nozzles suffer from the significant disadvantage that once the dimensions of the swirl element (swirl trough, swirl vane, etc.) are determined, the ratio of outlet tangential to axial flow momentum cannot be adjusted during actual use. For example, when the flue gas treatment capacity is reduced, in order to reduce the operation cost, the flow rate of the washing liquid is also reduced correspondingly, so that the axial and tangential flow momentum of the nozzle outlet is necessarily reduced at the same time, and the "coverage surface" of the washing liquid on the section of the scrubber is reduced, thereby influencing the flue gas washing effect.
To solve the problem, the prior art proposes to set one path of axial liquid inlet under the nozzle, and set two paths of symmetrical tangential liquid inlets on the side surface, so as to adjust the outlet flow pattern of the reverse spray type washing nozzle, if the total liquid amount is fixed, the proportion of tangential liquid flow is improved, the expansion angle (coverage surface) of liquid flow at the nozzle is increased, the proportion of axial liquid flow is improved, the axial velocity of jet flow at the nozzle outlet is increased, the jet flow 'rigidity' is larger, and the 'impact strength' is enhanced.
However, in practical application, because of the three-inlet structure, a single nozzle needs to be correspondingly provided with three valves, and the valves of the two tangential inlets need to be synchronously adjusted, otherwise, the outlet liquid flow is deflected to one side due to rotational asymmetry, and the uniformity of the distribution of the washing liquid in the washer is affected. And if the scrubber is large in size, multiple nozzles are used in parallel, which requires multiple valves to be adjusted synchronously, further increasing the difficulty and complexity of operation.
In addition, for the cleaning solution to purify the flue gas, the skilled person will understand that when the cleaning solution collides with the flue gas, the unstable fluctuation is generated on the surface of the liquid film, the liquid film is broken into small liquid drops under the action of the airflow shearing force, the contact area of the gas and the liquid is increased, a highly turbulent foam area is formed, the gas and the liquid in the foam area are continuously updated, the turbulence of the small liquid drop group in the area is enhanced, the surface update is rapid, the mass transfer effect is enhanced, and the washing effect is improved.
Fig. 1 is a schematic structural diagram of a half-sectional front view embodiment one of a reverse spray type washing nozzle provided in an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a top view of the reverse spray type washing nozzle provided in an embodiment of the present invention, as shown in fig. 1, where reference numerals in fig. 1 respectively indicate:
0-an adjustment member; 1-a liquid inlet 2-a columnar cyclone mixing chamber; 3-a converging swirl chamber; 4-ejection port; 5-a nozzle body; a first member of the 6-adjustment member; 7-a second member of the adjustment member; 8-a base flange; 9-red copper thick gaskets; 10-locking nuts; 11-a nozzle fixing flange; 12-a spiral slot; 13-mounting external threads; 13 a-mounting internal threads; d (D) 0 -a counter-jet washing nozzle inner diameter; d (D) 1 -the inner diameter of the inlet 1; d (D) 2 The inner diameter of the ejection orifice 4; l-ejection port length; cone angle of the beta-converging swirl chamber 3.
The reverse spray type washing nozzle provided in this embodiment includes:
nozzle body 5, adjustment member 0, base flange 8.
Referring to fig. 1 and 2, it can be seen that the nozzle body 5 has a "kettle" shape, and the nozzle body 5 may be provided with a nozzle fixing flange 11, where the nozzle fixing flange 11 and the base flange 8 are connected by a conventional method, such as: bolts, nuts to fix the nozzle body 5 to the base flange 8.
The nozzle body 5 is further provided with a liquid inlet 1 and a liquid outlet 4, as can be seen from fig. 1 and 2, the liquid inlet 1 may be a cylinder, alternatively, the nozzle body 5 is provided with only one liquid inlet 1, the liquid inlet 1 is located on a side wall of the lower portion of the nozzle body 5, and the axis direction of the liquid inlet is opposite to the center line of the nozzle body 5, and the position of the liquid inlet is lower than the lower end of the first member 1 of the adjusting member. The included angle alpha between the axis of the liquid inlet 1 and the central axis of the nozzle body 5 can be 60-90 degrees, so that the washing liquid enters the columnar cyclone mixing chamber 2 from the liquid inlet 1 and has an axial component force, the axial momentum of the sprayed jet flow is increased, the energy consumption of the nozzle is reduced, and the washing liquid flowing in a rotating way in the surface spiral groove 12 on the first component 6 of the adjusting component 0 and the washing liquid flowing in the axial direction in the columnar cyclone mixing chamber 2 are fully mixed.
The discharge port 4 may be a hollow columnar body protruding from the upper end of the nozzle body 5, concentric with the columnar swirl mixing chamber 2 and the tapered converging swirl chamber 3.
Alternatively, the inner diameter D of the counter-jet washing nozzle 0 With the inner diameter D of the ejection port 4 2 The ratio is 8-20, the spray outlet 4 adopts a large caliber structure, the washing liquid can run at a higher solid content without the nozzle being blocked, and the inner diameter D of the spray outlet 4 2 With a suitable ratio to the discharge port length L, the inside diameter D of the discharge port 4 is usually 2 The ratio of the jet flow to the length L of the jet port is 0.5-2.5, and a certain coarse atomization and a larger expansion angle are ensured after jet flow is ejected, for example, the expansion angle range of the jet port 4 can be 0-180 degrees, so that the washing liquid ejected from the jet port 4 has stronger tangential momentum, the section of the reverse jet type washing nozzle is covered, and the flue gas is prevented from being completely not contacted with the washing liquid, and the flue gas purification effect is influenced. In addition, spray outInner diameter D of port 4 2 Can be smaller than the inner diameter D of the liquid inlet 1 1 The ratio is 0.1-0.5.
The adjusting member 0 is located inside the nozzle body 5 and comprises a first member 6 and a second member 7, the first member 6 and the second member 7 are connected, the first member 6 comprises a cylinder and a cone, the top surface of the cylinder is the bottom surface of the cone, that is, the cone is overlapped above the cylinder, the intersecting surface is the top surface of the cylinder, and the second member 7 also comprises a cylinder, and the diameter of the cylinder is smaller than that of the cylinder in the first member 6.
The first component 6 is provided with a spiral groove 12, the spiral groove 12 is used for forming rotational flow, a part of washing liquid entering from the liquid inlet flows in the groove, and the washing liquid is subjected to the diversion effect of the spiral groove 12 to form rotational flow. The volume of the spiral groove 12 can be correspondingly changed according to the different flow rates of the washing liquid, and optionally, the range of the pitch can be 0.5 mm-10 mm and the range of the groove depth can be 2 mm-50 mm. Furthermore, the volume of the first member 6 can be increased or decreased to increase or decrease the flow rate of the swirling flow washing liquid without changing the pitch and the groove depth, and in one implementation, the diameter of the first member 6 (not shown in fig. 1) is equal to the diameter D of the cylindrical swirling mixing chamber 2 0 The ratio range of (2) is 0.5-0.8, and the height of the ratio is 30% -80% of the total height of the whole adjusting component 0; or, the spiral thread angle of the spiral thread groove 12 is changed, so that the rotational flow strength is adjusted in a mode of changing the tangential speed of the rotational flow flowing washing liquid, the range of the spiral thread angle of the spiral thread groove 12 can be 30-75 degrees, and if the spiral thread angle is reduced, the rotational flow strength is increased; if the thread rise angle increases, the swirl strength decreases.
Optionally, the second member 7 is provided with an external thread for installation, the pitch range can be 0.35 mm-0.6 mm, the lead angle of the thread 13 can be 30-75 degrees, and the second member 7 is mainly used for being matched and connected with the central hole of the base flange 8, so that the diameter value of the second member 7 only needs to consider the aspect of mechanical strength, is irrelevant to the flow and mass transfer of the washing liquid, and is independent of the diameter D of the cylindrical cyclone mixing chamber 2 and the second member 7 0 May be in the range of 0.2 to 0.5 for the second configurationThe diameter range of the member 7 is not limited in this embodiment. The second member 7 penetrates the base flange 8 and is mounted at the central hole of the base flange 8 by means of mounting external threads 13.
The central hole of the base flange 8 is provided with an internal mounting thread 13a which cooperates with an external mounting thread of the second member 7, where the central hole of the base flange 8 is connected to the second member 7, and the adjusting member 0, i.e. here the external mounting thread 13 and the internal mounting thread 13a, can be rotated to raise or lower the adjusting member 0, i.e. to adjust the axial position of the first member 6 in the nozzle body 5, during use. Specifically, the pitch range of the mounting internal thread 13a at the central hole of the base flange 8 may be 0.35mm to 0.6mm, and the thread lead angle may be 30 ° to 75 °.
Optionally, the reverse spray type washing nozzle further comprises a gasket and a locking nut 10, the gasket can be a red copper gasket 9, see description of the second member 7 of the adjusting member 0, the second member 7 penetrates through the base flange 8 and is installed at the central hole of the base flange 8 in a matched manner through the installation external threads 13 and the installation internal threads 13a, and after the washing liquid enters the nozzle body 5, the red copper gasket 9 and the locking nut 10 can be installed at the lower part of the central hole of the base flange 8 in order to prevent the washing liquid from leaking outwards.
Optionally, the nozzle body 5 is divided into two parts by the adjusting member 0, namely a convergent swirl chamber 3 and a columnar swirl mixing chamber 2, the convergent swirl chamber 3 is located above the columnar swirl mixing chamber 2, the cone angle β of the convergent swirl chamber 3 can be 30 ° to 120 °, and the liquid inlet 1 is arranged on the lower side wall of the columnar swirl mixing chamber 2, so that the liquid inlet 1, the ejection orifice 4 and the convergent swirl chamber 3 are all communicated with the columnar swirl mixing chamber 4. During actual operation, washing liquid enters the nozzle body 5 through the liquid inlet 1, and part of the washing liquid flows in the spiral groove 12 on the first member 6 of the adjusting member 0 and is subjected to the diversion effect of the spiral groove 12 to form high-speed rotational flow; the other part flows upwards along the axial direction of the nozzle body 15 in the columnar rotational flow mixing chamber 2 between the spiral groove 12 and the inner wall of the nozzle body 5, and the spiral groove and the inner wall are mixed vigorously at the junction, and then the spiral groove and the inner wall are contracted through the convergent type rotational flow chamber 3, so that the strong rotational axial flow is formed by acceleration, and is sprayed out of the spraying outlet 4, so that the washing liquid sprayed out of the spraying outlet 4 has strong axial momentum, namely the impact strength of the washing liquid and the flue gas is enhanced, and the flue gas purifying effect is better.
In this embodiment, when the washing liquid enters the cylindrical cyclone mixing chamber 2, the rotational momentum of the liquid in the spiral groove 12 is dissipated while the liquid in the axial direction is driven to rotate. The position of the helical groove 12 on the first member 6 within the nozzle body 5 can be adjusted up and down by rotating the mating threads 13, 13a between the adjustment member 0 and the central bore of the base flange 8. Under the condition that the total washing liquid amount is unchanged, the adjusting structure 0 is adjusted upwards, the upper end of the spiral groove 12 is close to the nozzle outlet 4, the mixing distance between the washing liquid in the spiral groove 12 and the washing liquid flowing in the axial direction is short before the washing liquid is sprayed out of the nozzle, the dissipation of the rotating momentum is small, the covering surface of the washing liquid at the nozzle outlet is large, namely the tangential momentum is large, and the axial momentum is relatively small. On the contrary, if the adjusting structure 0 is adjusted downwards, the upper end of the spiral groove 12 is far away from the nozzle outlet 4, the mixing distance between the washing liquid in the spiral groove 12 and the washing liquid flowing axially is long before the washing liquid is sprayed out of the nozzle, the dissipation of the rotation momentum is large, the axial momentum of the washing liquid at the nozzle outlet 4 is large, and the coverage surface is reduced (namely, the tangential momentum is reduced).
In this scheme, the tangential momentum and axial momentum of the washing liquid sprayed from the spraying port can be changed by comprehensively considering the position of the spiral groove 12 in the nozzle body 5 and the structures of the spiral groove and the like on the first member 6, so that the washing liquid and the flue gas are fully mixed, and the flue gas purification efficiency is improved.
The embodiment provides a contrary washing nozzle that spouts, includes: the nozzle comprises a nozzle body, an adjusting member and a base flange; the nozzle body is provided with a liquid inlet and a spray outlet; the adjusting member is positioned in the nozzle body, and comprises a first member and a second member which are connected; the first component comprises a cylinder and a cone, the cylinder is connected with the cone, a spiral groove is formed in the first component, and the spiral groove is used for forming rotational flow; the second member comprises a cylinder with a diameter smaller than that of the cylinder of the first member, and the second member is provided with threads; the connecting part of the central hole of the base flange and the second component of the adjusting component is provided with a thread matched with the thread of the second component, so that the outlet flow pattern of the reverse spray type washing nozzle is adjusted, the difficulty and complexity of flue gas purifying operation are reduced, and the operation efficiency is improved.
On the basis of the first embodiment, the spiral groove in the first embodiment is replaced by a swirl plate. Fig. 3 is a schematic structural diagram of a second embodiment of a half-sectional front view of a reverse spray type washing nozzle according to an embodiment of the present invention, as shown in fig. 3, and reference numerals in fig. 3 respectively indicate:
0-an adjustment member; 1-a liquid inlet 2-a columnar cyclone mixing chamber; 3-a converging swirl chamber; 4-ejection port; 5-a nozzle body; a first member of the 6-adjustment member; 7-a second member of the adjustment member; 8-a base flange; 9-red copper thick gaskets; 10-locking nuts; 11-a nozzle fixing flange; 12' -cyclone sheets; 13-mounting external threads; 13 a-mounting internal threads; d (D) 0 -a counter-jet washing nozzle inner diameter; d (D) 1 -the inner diameter of the inlet 1; d (D) 2 The inner diameter of the ejection orifice 4; l-ejection port length; cone angle of the beta-converging swirl chamber 3.
Referring to fig. 3, the diameter of the adjusting member 0 after the first member 6 is added with the swirl sheet 12' is equal to the diameter of the adjusting member 6 after the first member 6 is added with the spiral groove 12 in fig. 1. In the specific implementation of the scheme, the washing liquid enters the nozzle body 5 from the liquid inlet 1, the washing liquid entering from the liquid inlet is divided into two parts by the cyclone sheets 12', one part of the washing liquid flows through the channels among the cyclone sheets 12', the other part of the washing liquid flows in the columnar cyclone mixing chamber 2 formed by the outside of the cyclone sheets 12' and the inner wall of the nozzle body 5, and then is contracted and mixed through the cyclone convergence chamber 3, and is accelerated to be sprayed out from the spraying outlet 4.
Optionally, the flow and mixing conditions of the cleaning solution inside the nozzle, as well as the variation of the outlet flow pattern, are affected by the position and structural parameters of the swirl plate 12' inside the nozzle. Therefore, under the condition that the total washing liquid amount is unchanged, the upper end position of the cyclone sheet 12' is close to the spraying outlet 4 by rotating the matching threads 13 and 13a between the adjusting component 0 and the central hole of the base flange 8, so that the washing liquid obtains larger rotation momentum, and a larger jet expansion angle (namely, larger tangential momentum) can be formed at the spraying outlet 4, but smaller axial momentum is formed; if the upper end of the swirl plate 12' is distanced from the nozzle outlet 4 by rotating the mating threads 13, 13a between the adjusting member 0 and the central hole of the base flange 8, the swirling washing liquid is dissipated more at the nozzle outlet 4, and the flow pattern formed outside the nozzle outlet 4 resembles a "liquid column", i.e. the axial momentum is larger, but the washing liquid cannot cover the entire cross section of the washer (i.e. the tangential momentum is smaller).
Or, by adjusting the structural dimensions of the cyclone sheet 12' to change the flow rate of the washing liquid participating in the cyclone flow, in a specific implementation manner, the flow direction of the washing liquid flowing out of the cyclone sheet 12' is more tangential when the blade outlet angle of the cyclone sheet 12' is reduced, and the proportion of the rotational momentum is increased; by increasing the number of the swirl plates 12', the flow of the washing liquid in the nozzle body 5 is more strongly guided by the swirl plates 12', and larger tangential momentum can be obtained. It should be noted that, too many blades will increase the pressure drop in the nozzle body 5, and the energy consumption will also increase, and when the torsion angle of the blades of the cyclone sheet 12' increases, the deflection angle of the washing liquid passing through the cyclone sheet will become larger, and the tangential speed will also increase accordingly.
It will be appreciated that the angle α between the axis of the inlet 1 and the central axis of the nozzle body 5 may be in the range 60 ° to 90 °. In practical applications, if the diameter of the first member 6 of the adjusting member 0 is large, or the vane height of the swirl plate 12 'is high (corresponding to a large number of groove depths of the spiral groove 12 in the first embodiment), the amount of washing liquid passing through the swirl plate 12' is large and the obtained tangential momentum is large, and a hollow flow pattern is easily formed at the nozzle outlet 4. The hollow flow pattern reduces the effective contact area of gas and liquid, and can reduce the purifying effect of flue gas. Therefore, on the premise of obtaining enough tangential momentum, alpha can be set to 60 degrees, so that the sprayed liquid has a certain amount of axial momentum, and the energy consumption of the nozzle is reduced, namely, in order to fully contact the flue gas and the washing liquid, the ratio of the axial and tangential distributed momentums is adjusted, and the proper tangential momentum and axial momentum are ensured at the spraying outlet 4.
The scheme is specifically described below:
it should be appreciated that the spray of the nozzleThe outlet 4 is sized according to the size of the scrubber and the inner diameter D of the total inlet 1 1 The angle alpha between the axis of the liquid inlet 1 and the central axis of the nozzle body 5, the size of the adjusting member 0, the geometrical parameters of the swirl plate 12' (or the spiral groove 12 in the first embodiment) are all related to the energy consumption requirement of the scrubber, the scrubbing effect requirement, and the operational range requirement.
In the present embodiment, the height of the reverse spray type washing nozzle may be 1500mm, the inner diameter of which is equal to the inner diameter D of the discharge port 4 2 At a ratio of 20, the inner diameter D of the discharge port 4 may be set so that the optimum washing zone is present at a position above the middle of the counter-jet washing nozzle when the air velocity is 10m/s 2 The length L is 8mm, the included angle alpha between the axis of the liquid inlet 1 and the central axis of the nozzle body 5 is 30 degrees, and the inner diameter D of the liquid inlet 1 1 With the inner diameter D of the ejection port 4 2 The ratio is 2 and the cone angle beta of the converging swirl chamber 3 is 90 deg.. The diameter of the first member 6 in the adjusting member 0 and the inner diameter (i.e. the diameter of the columnar swirl mixing chamber 2) D of the nozzle body 5 0 The ratio can be 0.7, the height accounts for 50 percent of the total height of the regulating component 0, the swirl vanes 12' arranged at the front section of the first component 6 in the regulating component 0 can have a blade outlet angle of 30 degrees and a blade torsion angle of 60 degrees
Optionally, 5 vanes are provided on a group of the front section of the first member 6 (along the circumference of the cylindrical surface of the cylinder in the first member 6) in the regulating member 0, the diameter of the second member 7 of the regulating member 0 and the inner diameter D of the nozzle body 5 0 The ratio is 0.3, the pitch of the installed external thread 13 can be 0.5mm, the tooth shape is an equilateral triangle, the thread lift angle is 30 degrees, the geometric parameter of the internal thread 13a at the central hole of the base flange 8 is equal to the thread of the second component in the adjusting component 0, when the treatment gas quantity is larger, the rotational flow strength of the washing liquid in the nozzle body 5 needs to be improved to fully transfer mass, and the position of the adjusting component 0 in the nozzle can be lifted to obtain proper flow patterns.
In this embodiment, the axial position of the swirl plate 12' of the large-diameter front section 6 of the adjusting member can be adjusted by the mating threads 13, 13a between the adjusting member 0 and the central hole of the base flange 8, so as to determine the dissipation degree of the rotational momentum (i.e. tangential momentum and axial momentum of the outlet washing liquid), and the specific implementation process is described in detail in the first embodiment, which is not repeated here.
In the scheme, the tangential momentum and the axial momentum of the washing liquid sprayed from the spraying port can be changed by comprehensively considering the positions of the spiral grooves 12 on the first component 6 in the nozzle body 5, the swirl vanes 12', and the like, so that the washing liquid and the flue gas are fully mixed, and the flue gas purifying efficiency is improved.
The embodiment provides a contrary washing nozzle that spouts, includes: the nozzle comprises a nozzle body, an adjusting member and a base flange; the nozzle body is provided with a liquid inlet and a spray outlet; the adjusting member is positioned in the nozzle body, and comprises a first member and a second member which are connected; the first component comprises a cylinder and a cone, the cylinder is connected with the cone, a swirl plate is arranged on the first component and is used for forming swirl; the second member comprises a cylinder with a diameter smaller than that of the cylinder of the first member, and the second member is provided with threads; the connecting part of the central hole of the base flange and the second component of the adjusting component is provided with threads matched with the threads of the second component, so that the outlet flow pattern of the reverse spray type washing nozzle is adjusted, the operation difficulty and complexity of purifying the flue gas are reduced, and the operation efficiency is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A reverse spray washing nozzle, comprising:
the nozzle comprises a nozzle body, an adjusting member and a base flange;
the nozzle body is fixed on the base flange and is provided with a liquid inlet and a spray outlet;
the adjusting member is positioned inside the nozzle body, and comprises a first member and a second member, and the first member is connected with the second member; the first component comprises a cylinder and a cone, the cylinder is connected with the cone, a spiral groove is formed in the first component, and the spiral groove is used for forming rotational flow; the second component comprises a cylinder, the diameter of the cylinder is smaller than that of the cylinder of the first component, threads are arranged on the second component, and the adjusting component divides the nozzle body into a convergent swirl chamber and a columnar swirl mixing chamber;
threads matched with the threads of the second component are arranged at the joint of the central hole of the base flange and the second component of the adjusting component;
the included angle between the axis of the liquid inlet and the central axis of the nozzle body is between 60 and 90 degrees;
the rotation strength is changed by changing the thread lead angle of the spiral groove;
the volume of the spiral groove is determined according to the flow of the washing liquid, the pitch range of the spiral groove is 0.5 mm-10 mm, the groove depth range of the spiral groove is 2 mm-50 mm, the thread lift angle range of the spiral groove is 30-75 degrees, the ratio of the diameter of the first component to the diameter of the columnar rotational flow mixing chamber is 0.5-0.8, and the height of the first component is 30-80% of the total height of the whole regulating component;
the reverse spray type washing nozzle further comprises a gasket and a locking nut, and the gasket and the locking nut are used for preventing washing liquid from leaking outwards.
2. The reverse spray washing nozzle of claim 1, wherein the second member is provided with mounting external threads and the base flange central bore is provided with mounting internal threads that mate with the mounting external threads of the second member.
3. The reverse spray washing nozzle as claimed in claim 1, wherein the nozzle body is further provided with a nozzle fixing flange by which the nozzle body is fixed to the base flange.
4. The reverse spray washing nozzle of claim 1 wherein said liquid inlet is opposite the nozzle body centerline and is located on the lower sidewall of said nozzle body.
5. The reverse spray washing nozzle of claim 1 wherein said spray orifice is a convex hollow cylinder.
6. The reverse spray washing nozzle of claim 5, wherein the spray orifice is provided on the nozzle body.
7. The reverse spray type washing nozzle according to claim 1, wherein the liquid inlet, the spray outlet, the convergent swirl chamber and the columnar swirl mixing chamber are all communicated.
8. The reverse spray washing nozzle of claim 7 wherein said converging swirl chamber is located above said cylindrical swirl mixing chamber.
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| CN201810763235.4A CN108722703B (en) | 2018-07-12 | 2018-07-12 | Reverse spray type washing nozzle |
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|---|---|---|---|
| CN201810763235.4A CN108722703B (en) | 2018-07-12 | 2018-07-12 | Reverse spray type washing nozzle |
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| CN108722703A CN108722703A (en) | 2018-11-02 |
| CN108722703B true CN108722703B (en) | 2024-01-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940746B (en) * | 2019-04-24 | 2021-04-06 | 江西斯米克陶瓷有限公司 | Glazing device for ceramic tile production equipment |
| CN111346869B (en) * | 2020-05-06 | 2021-01-05 | 浙江大农实业股份有限公司 | Hot water high pressure cleaner |
| CN114951101B (en) * | 2022-05-23 | 2023-10-20 | 台州市飞奔机械制造有限公司 | Spraying device for cleaning workpiece |
| CN115041446B (en) * | 2022-05-23 | 2024-01-12 | 汉特曼轻金属铸造（天津）有限公司 | Cleaning device for workpiece |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB420262A (en) * | 1933-12-22 | 1934-11-28 | Adolf Bargeboer | Whirl spraying device |
| GB1386852A (en) * | 1971-03-22 | 1975-03-12 | Ransburg Corp | Coating apparatus and methods |
| CN1047815A (en) * | 1989-06-03 | 1990-12-19 | 全苏铝镁电气工业科学研究所设计院 | Device for atomizing liquid |
| US5028006A (en) * | 1989-03-20 | 1991-07-02 | Recticel | Spray nozzle for spray gun for forming a polyurethane layer on a surface |
| CN102039409A (en) * | 2009-10-20 | 2011-05-04 | 沈阳工业大学 | Method and equipment for preparing vibrated atomizing gas |
| JP2012152462A (en) * | 2011-01-27 | 2012-08-16 | Noritz Corp | Bubble generator and circulation adaptor incorporating the same |
| CN103016469A (en) * | 2012-12-20 | 2013-04-03 | 西安交通大学 | Vortex device and application of vortex device in transportation of high water content crude oil |
| CN103008138A (en) * | 2012-12-14 | 2013-04-03 | 中国石油大学(北京) | Reversed-spraying wet-method smoke washing nozzle |
| CN202983935U (en) * | 2012-12-14 | 2013-06-12 | 中国石油大学(北京) | Reversed spraying nozzle for wet-method smoke washing |
| CN104174521A (en) * | 2014-09-11 | 2014-12-03 | 东莞市安默琳节能环保技术有限公司 | Frost prevention nozzle used for low-temperature minimal quantity lubrication cutting |
| CN104772243A (en) * | 2015-04-22 | 2015-07-15 | 刘金玲 | Solid-liquid two-phase working medium pressure atomizing nozzle |
| CN104907195A (en) * | 2015-06-10 | 2015-09-16 | 中国石油大学(华东) | Rotational flow injection nozzle |
| CN105368479A (en) * | 2015-10-16 | 2016-03-02 | 中国石油大学(北京) | Novel flow aid technology promoting mixing of raw oil and catalyst in catalytic cracking riser feeding area |
| KR101766689B1 (en) * | 2017-05-22 | 2017-08-09 | 이주형 | Nozzle for swirling air of vinyl house |
| CN107149991A (en) * | 2016-03-04 | 2017-09-12 | 厦门松霖科技有限公司 | A kind of discharging device and gondola water faucet for producing vortex rotation water at a slow speed |
| CN208824770U (en) * | 2018-07-12 | 2019-05-07 | 中国石油大学(北京) | Reverse spray type Washing spray nozzle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2257326B1 (en) * | 1973-06-19 | 1976-05-28 | Rhone Progil | |
| US8348180B2 (en) * | 2004-06-09 | 2013-01-08 | Delavan Inc | Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same |
| DE102013203339A1 (en) * | 2013-02-28 | 2014-08-28 | Lechler Gmbh | Two-fluid nozzle and method for spraying a liquid-gas mixture |
-
2018
- 2018-07-12 CN CN201810763235.4A patent/CN108722703B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB420262A (en) * | 1933-12-22 | 1934-11-28 | Adolf Bargeboer | Whirl spraying device |
| GB1386852A (en) * | 1971-03-22 | 1975-03-12 | Ransburg Corp | Coating apparatus and methods |
| US5028006A (en) * | 1989-03-20 | 1991-07-02 | Recticel | Spray nozzle for spray gun for forming a polyurethane layer on a surface |
| CN1047815A (en) * | 1989-06-03 | 1990-12-19 | 全苏铝镁电气工业科学研究所设计院 | Device for atomizing liquid |
| CN102039409A (en) * | 2009-10-20 | 2011-05-04 | 沈阳工业大学 | Method and equipment for preparing vibrated atomizing gas |
| JP2012152462A (en) * | 2011-01-27 | 2012-08-16 | Noritz Corp | Bubble generator and circulation adaptor incorporating the same |
| CN202983935U (en) * | 2012-12-14 | 2013-06-12 | 中国石油大学(北京) | Reversed spraying nozzle for wet-method smoke washing |
| CN103008138A (en) * | 2012-12-14 | 2013-04-03 | 中国石油大学(北京) | Reversed-spraying wet-method smoke washing nozzle |
| CN103016469A (en) * | 2012-12-20 | 2013-04-03 | 西安交通大学 | Vortex device and application of vortex device in transportation of high water content crude oil |
| CN104174521A (en) * | 2014-09-11 | 2014-12-03 | 东莞市安默琳节能环保技术有限公司 | Frost prevention nozzle used for low-temperature minimal quantity lubrication cutting |
| CN104772243A (en) * | 2015-04-22 | 2015-07-15 | 刘金玲 | Solid-liquid two-phase working medium pressure atomizing nozzle |
| CN104907195A (en) * | 2015-06-10 | 2015-09-16 | 中国石油大学(华东) | Rotational flow injection nozzle |
| CN105368479A (en) * | 2015-10-16 | 2016-03-02 | 中国石油大学(北京) | Novel flow aid technology promoting mixing of raw oil and catalyst in catalytic cracking riser feeding area |
| CN107149991A (en) * | 2016-03-04 | 2017-09-12 | 厦门松霖科技有限公司 | A kind of discharging device and gondola water faucet for producing vortex rotation water at a slow speed |
| KR101766689B1 (en) * | 2017-05-22 | 2017-08-09 | 이주형 | Nozzle for swirling air of vinyl house |
| CN208824770U (en) * | 2018-07-12 | 2019-05-07 | 中国石油大学(北京) | Reverse spray type Washing spray nozzle |
Non-Patent Citations (2)
| Title |
|---|
| 一种旋流式喷嘴的实验和数值研究;王国辉, 蔡体敏, 何国强, 胡春波;推进技术(第01期);28-32 * |
| 李光晓等.气液两相逆流-错流撞击洗涤器内两相流动与传质特性.过程工程学报.2015,第15卷(第2期),198-204. * |
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