CN108745670B - A liquid-rotating atomizing spray nozzle for high temperature high pressure environment - Google Patents
A liquid-rotating atomizing spray nozzle for high temperature high pressure environment Download PDFInfo
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- CN108745670B CN108745670B CN201810778931.2A CN201810778931A CN108745670B CN 108745670 B CN108745670 B CN 108745670B CN 201810778931 A CN201810778931 A CN 201810778931A CN 108745670 B CN108745670 B CN 108745670B
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- spray head
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- mounting hole
- spray nozzle
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- 239000007921 spray Substances 0.000 title claims abstract description 160
- 238000009826 distribution Methods 0.000 claims abstract description 82
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000012452 mother liquor Substances 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 31
- 238000009987 spinning Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011258 core-shell material Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003381 stabilizer Substances 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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a rotary liquid atomizing spray nozzle for a high-temperature high-pressure environment, which comprises: the spray head base is provided with a cavity penetrating through the spray head base back and forth, the cavity comprises a spray head mounting hole at the front end of the cavity and a distribution ring mounting hole at the rear side of the spray head mounting hole, the distribution ring is arranged on the distribution ring mounting hole, at least two distribution holes are formed in the distribution ring, the spray head is arranged in the spray head mounting hole, the spray head is provided with a through hole and a spray nozzle, the through hole penetrates through the spray head backwards, the rear end of the spray nozzle is communicated with the front end of the through hole, the front end of the spray nozzle penetrates through the spray head forwards, the through hole is formed in the cyclone, a spiral groove is formed in the outer portion of the cyclone, and the front end of the spiral groove is communicated with the spray nozzle. The distribution ring divides the fluid into a plurality of strands, so that the fluid can be rapidly and uniformly distributed to the circumferential area of the hydrocyclone, the flow resistance of the fluid is reduced, and the flow rate of the fluid is increased; when the fluid passes through the spiral grooves, the fluid is accelerated again, and the uniformity of atomized liquid drops is improved.
Description
Technical Field
The invention relates to the technical field of liquid spraying, in particular to a rotary liquid atomizing spray nozzle for a high-temperature and high-pressure environment.
Background
In some pressure devices, for example, key devices in the nuclear power field, such as a high-temperature and high-pressure vessel or a complex closed vessel, such as a steam stabilizer, a containment vessel and the like, a corresponding atomization spraying system is often required to be arranged, and low-temperature atomized droplets are sprayed into the high-temperature and high-pressure vessel so as to realize rapid temperature and pressure reduction of the pressure vessel and ensure safe and stable operation of the high-temperature and high-pressure device.
The Chinese patent CN2106660U sets two spiral grooves on the upper part between the inner wall of the shell of the nozzle and the outer wall of the spiral core, and a spiral core shell with a conical cavity on the lower part, after water flows into the nozzle, the water flows into the nozzle and is divided into three parts, the three parts pass through the spiral core shell and the spiral core, the water enters the spiral groove to be changed into rotary motion, the conical cavity on the lower part is accelerated, and the water leaves the nozzle to form a three-layer hollow umbrella-shaped water curtain; the spiral nozzle has low required water supply pressure, can spray out a plurality of layers of hollow water curtains, has good water flow atomization, cooling and dedusting effects, but has different spraying speeds due to different acceleration paths of water mist sprayed from each layer, and has uneven sprayed water mist, and has no obvious effect of uniformly and rapidly cooling and reducing pressure.
The periphery of the fastener of China patent CN203355924U is provided with threads, the spray hole is a conical spiral body, the spray hole area is a concentric hollow conical ring, and the diameter of the hollow conical ring from the inlet of the fastener to the outlet of the spray hole is linearly changed; the spiral nozzle has the advantages of large atomization angle, no blockage at the water outlet, difficult scaling of the nozzle flow channel, small abrasion, uniform and fine atomization effect, difficult processing and manufacturing, and easy damage in high-temperature and high-pressure environments.
The Chinese patent application CN104923424A sets up the cyclone plate in the liquid cyclone chamber, the water flow is rotated at a high speed through the cyclone plate after entering the cyclone chamber, and then is sprayed to the liquid nozzle at a high speed; the cyclone atomization nozzle is not easy to block, has large spraying quantity, good atomization effect and even fog particles, and is suitable for equipment systems such as spray cooling, evaporation, gas-liquid reaction, wet dust removal, degassing and the like; however, the swirl plate of the swirl atomizer continuously rotates in a working state, increases the flow resistance of water while rotating, increases the resistance coefficient of the atomizer, and is not suitable for cooling and depressurization in a high-temperature and high-pressure container.
Therefore, there is a need to provide a liquid-spinning atomizing spray nozzle for high-temperature and high-pressure environments with good atomizing effect to solve the above problems.
Disclosure of Invention
The invention aims to provide a rotary liquid atomizing spray nozzle with good atomizing effect for a high-temperature and high-pressure environment.
In order to achieve the above purpose, the invention discloses a liquid cyclone atomization spray nozzle for a high-temperature and high-pressure environment, comprising: the spray head comprises a spray head seat, a spray head, a liquid rotator and a distribution ring, wherein the spray head seat is provided with a cavity penetrating through the front and rear of the cavity, the cavity comprises a spray head mounting hole at the front end of the cavity and a distribution ring mounting hole at the rear side of the spray head mounting hole, the distribution ring is arranged on the distribution ring mounting hole, the distribution ring is provided with at least two distribution holes, the spray head is arranged in the spray head mounting hole and is provided with a through hole and a spray nozzle, the through hole penetrates through the spray head backwards, the rear end of the spray nozzle is communicated with the front end of the through hole, the front end of the spray nozzle penetrates through the spray head forwards, the liquid rotator is arranged on the through hole, a spiral groove is formed in the outer portion of the liquid rotator, and the front end of the spiral groove is communicated with the spray nozzle.
Compared with the prior art, the distribution ring is arranged at the rear side of the spray head, the liquid cyclone is arranged in the through hole of the spray head, and fluid entering the spray nozzle enters the through hole through the flow distribution hole of the distribution ring and is sprayed out from the spray nozzle after passing through the spiral groove outside the liquid cyclone; the invention divides the fluid entering the distribution ring into at least two streams by the at least two flow dividing holes of the distribution ring, reduces the flow resistance of the fluid, improves the uniformity of atomized liquid drops, ensures that the fluid can be more quickly and uniformly distributed to the circumferential area of the liquid cyclone, and enhances the atomization effect; in addition, when the fluid entering the through hole passes through the spiral groove outside the cyclone, the fluid is accelerated again, so that the flow rate of the fluid is faster, and the atomization effect is further enhanced; in addition, as the rotary liquid atomizing spray nozzle is of an integrated structure, the distribution ring, the liquid rotator, the spray nozzle and the spray nozzle seat do not move relatively, mutual friction loss among structural parts does not exist, and the overall structure is more stable and firm and can be suitable for a high-temperature and high-pressure environment; in addition, the rotary liquid atomizing spray nozzle has a simple structure and is easy to process and manufacture.
Preferably, the spiral groove is a thread groove with a certain helix angle; the spiral groove is of a thread groove structure, so that the flow resistance of fluid in the spiral groove can be reduced, and the thread groove is simpler to process; the thread groove has a certain helix angle, so that the rotation rate of the fluid is continuously increased in the process of advancing along the axial direction of the thread groove, and the atomization effect is enhanced.
Preferably, a circumferential gap gradually decreasing from back to front is formed between the hydrocyclone and the inner wall of the through hole, and the front end of the hydrocyclone is circumferentially abutted against the front end of the inner wall of the through hole.
Preferably, the through hole is tapered, and the size of the rear end of the through hole is larger than the size of the front end of the through hole.
Preferably, the nozzle comprises a conical hole and a fluid outlet, the front end of the conical hole is smaller than the rear end of the conical hole, the rear end of the conical hole is connected with the front end of the through hole, and the fluid outlet is connected with the front end of the conical hole; therefore, after the fluid enters the conical hole of the nozzle, the fluid enters the front end with smaller flow area through the rear end with larger flow area, so that the flow rate is accelerated, and the atomization effect is enhanced.
Preferably, the cavity is provided with a stop part protruding inwards at the rear side of the distribution ring mounting hole, the distribution ring is stopped at the stop part, and the rear end of the hydrocyclone is abutted against the distribution ring; thereby facilitating positioning of the distribution ring in the distribution ring mounting hole.
Preferably, a spherical positioning head is formed at the rear end of the hydrocyclone, a circular positioning hole is formed in the middle of the distribution ring, and the positioning head part extends into the positioning hole and is abutted to the front edge of the positioning hole; therefore, the distribution ring can be stably positioned in the distribution ring mounting hole, and meanwhile, the liquid rotating device is convenient to fix.
Preferably, the front end of the liquid cyclone is circumferentially abutted to the front end of the inner wall of the through hole, so that the design can realize circumferential positioning of the liquid cyclone under the cooperation of the distribution ring.
Preferably, the rear end of the nozzle is in a tapered structure which gradually decreases from back to front; the axial movement of the liquid cyclone can be limited while the fluid flow rate is quickened.
Preferably, a first buffer cavity is formed between the distribution ring and the spray head, and the outer periphery of the first buffer cavity extends outwards beyond the distribution ring; therefore, the fluid flowing out of the flow dividing holes can be prevented from violently moving, the flow rate of the fluid is stabilized, and the particle size and the spraying angle of atomized liquid drops are ensured to be consistent; while the flow resistance of the fluid can be reduced.
Preferably, the front end of the spray head extends out of the spray head mounting hole, an annular fixing part is outwards protruded from the front end of the spray head, and the fixing part is welded with the front end of the spray head seat in a sealing way; therefore, the spray head can be fixed at the front end of the spray head seat in a sealing way.
Preferably, an axial gap is formed between the fixing part and the front end of the nozzle holder, a sealing gasket is arranged at the axial gap, and the fixing part, the sealing gasket and the front end of the nozzle holder are welded in a sealing manner.
Preferably, a gasket groove is concavely formed in the position of the nozzle corresponding to the axial gap, the sealing gasket is positioned in the gasket groove, and the outer side of the sealing gasket extends out of the gasket groove; by the design, the tightness between the spray head and the front end of the spray head seat is further improved.
Preferably, an inner thread structure is formed on the inner wall of the spray head mounting hole, and an outer thread structure matched with the inner thread structure of the spray head mounting hole is formed at the rear end of the spray head; therefore, when the spray head is stably installed in the spray head installation hole, the tightness between the spray head and the spray head seat can be further improved by the mode of internal and external threaded connection.
Preferably, the rotary liquid atomizing spray nozzle for the high-temperature and high-pressure environment further comprises a mother liquid pipe joint with a hollow structure, wherein a joint mounting hole is formed at the rear end of the cavity, and the front end of the mother liquid pipe joint is hermetically mounted in the joint mounting hole; the rotary liquid atomizing spray nozzle can be connected to external mother liquid equipment by virtue of the design of the mother liquid pipe joint and the joint mounting hole.
Preferably, an inner thread structure is formed on the inner wall of the joint mounting hole, an outer thread structure matched with the inner thread structure of the joint mounting hole is formed at the front end of the mother liquor pipe joint, and the mother liquor pipe joint and the rear end of the nozzle mounting seat are welded in a circumferential sealing manner; therefore, the front end of the mother liquor pipe joint can be firmly installed in the joint installation hole, the joint of the mother liquor pipe joint and the rear end of the spray head installation seat is sealed and welded in a mode of internal and external threaded connection, and the tightness between the mother liquor pipe joint and the spray head seat can be further improved.
Preferably, a joint mounting hole is formed at the rear end of the cavity, a second buffer cavity is formed between the joint mounting hole and the distribution ring mounting hole, the second buffer cavity comprises a first buffer part which is cylindrical and is positioned at the rear end and a second buffer part which is conical and is positioned at the front end, the size of the rear end of the second buffer part is larger than that of the front end of the second buffer part, the front end of the first buffer part is connected with the rear end of the second buffer part, and the outer periphery of the first buffer part outwards exceeds the joint mounting hole; thereby, the flow resistance of the fluid is reduced while stabilizing the flow rate of the fluid.
Drawings
Fig. 1 is a cross-sectional view of a liquid-spinning atomizing spray nozzle for a high-temperature and high-pressure environment according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a showerhead holder according to an embodiment of the invention.
Fig. 3 is a cross-sectional view of a spray head according to an embodiment of the present invention.
Fig. 4 is a partial cross-sectional view of a hydrocyclone in accordance with an embodiment of the present invention.
Fig. 5 is a schematic view of a distribution ring according to an embodiment of the present invention.
Detailed Description
In order to describe the technical content, the constructional features and the effects achieved by the present invention in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "inner", "outer", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, and thus should not be construed as limitations on the protection of the present invention.
Referring to fig. 1 to 5, the present invention discloses a liquid-swirling atomizing spray nozzle 100 for a high-temperature and high-pressure environment, comprising: the spray head seat 1, the spray head 2, the liquid cyclone 3 and the distribution ring 4, the spray head seat 1 is provided with a cavity 11 penetrating front and back, the cavity 11 comprises a spray head mounting hole 111 at the front end of the cavity and a distribution ring mounting hole 112 at the rear side of the spray head mounting hole 111, the distribution ring 4 is arranged in the distribution ring mounting hole 112, the distribution ring 4 is provided with at least two distribution holes 41, the spray head 2 is arranged in the spray head mounting hole 111, the spray head 2 is provided with a through hole 21 and a spray nozzle 22, the through hole 21 penetrates the spray head 2 backwards, the rear end of the spray nozzle 22 is communicated with the front end of the through hole 21, the front end of the spray nozzle 22 penetrates the spray head 2 forwards, the liquid cyclone 3 is arranged in the through hole 21, a spiral groove 31 is formed outside the liquid cyclone 3, and the front end of the spiral groove 31 is communicated with the spray nozzle 22. After entering the liquid-spinning atomizing spray nozzle 100, the fluid enters the through-flow hole 21 of the spray head 2 through the flow-dividing hole 41 of the distribution ring 4, passes through the spiral groove 31 outside the liquid-spinning machine 3, flows out of the spiral groove 31, enters the spray nozzle 22, and finally is sprayed out of the spray nozzle 22.
The liquid-spinning atomizing spray nozzle 100 for the high-temperature and high-pressure environment can be applied to a pressure container in engineering experiments or field equipment, when the pressure of the pressure container reaches a certain value, a control system controls a valve of a mother liquid pipeline communicated with the liquid-spinning atomizing spray nozzle 100 to be opened, so that mother liquid passes through the liquid-spinning atomizing spray nozzle 100 to form atomized liquid drops, the atomized liquid drops are sprayed into the pressure container through a nozzle 22, the rapid temperature and pressure reduction of the pressure container is realized, and the safety and reliability of the operation of a pressure system are ensured; of course, the liquid-rotating atomizing spray nozzle 100 of the present invention is also applicable to any other environment in which atomizing spray is required, and is not limited to application in a pressure vessel.
Hereinafter, the liquid-spinning atomizing spray nozzle 100 for high-temperature and high-pressure environment according to the present invention will be described in further detail with reference to fig. 1 to 5.
Referring to fig. 4, specifically, the spiral groove 31 is a thread groove with a certain lead angle; the spiral groove 31 is of a thread groove structure, so that the flow resistance of fluid in the spiral groove 31 can be reduced, and the thread groove is simpler to process; the thread groove 31 has a certain helix angle, so that the rotation speed of the fluid is continuously increased in the process of advancing along the axial direction of the thread groove 31, and a rotational flow is formed, thereby achieving the effect of rotational flow atomization and enhancing the atomization effect of the liquid-swirl atomization spray nozzle 100.
Referring to fig. 1,3 and 4, specifically, a circumferential gap gradually decreasing from back to front is formed between the cyclone 3 and the inner wall of the through-flow hole 21, and the front end of the cyclone 3 circumferentially abuts against the front end of the inner wall of the through-flow hole 21; since the tip of the hydrocyclone 3 circumferentially abuts against the tip of the inner wall of the through-hole 21, the tip of the hydrocyclone 3 can be naturally fixed to the tip of the inner wall of the through-hole 21 at the time of the integral assembly.
More specifically, the through-flow hole 21 is tapered, and the size of the rear end of the through-flow hole 21 is larger than the size of the front end of the through-flow hole 21; and the front and rear sizes of the parts of the cyclone 3 positioned in the through holes 21 are consistent, when the cyclone 3 is installed, the front end of the cyclone 3 is gradually placed into the through holes 21 from the rear end of the through holes 21 until the front end of the cyclone 3 is abutted against the front end of the inner wall of the through holes 21.
Specifically, the spout 22 includes a tapered hole 221 and a fluid outlet 222, the front end of the tapered hole 221 having a smaller size than the rear end of the tapered hole 221, the rear end of the tapered hole 221 being connected to the front end of the through-hole 21, the fluid outlet 222 being connected to the front end of the tapered hole 221; the nozzle 22 is arranged in a mode of large back and small front, the flow area of the rear end of the nozzle 22 is larger than that of the front end, so that after fluid enters the conical hole 221 of the nozzle 22, the fluid enters the front end with small flow area through the rear end with large flow area, the flow rate is accelerated, and the atomization effect is enhanced.
Preferably, in order to make the swirl atomizing spray nozzle 100 have a larger spray angle, and avoid the spray dead zone as much as possible, in the present embodiment, the lower base angle of the axial section of the tapered hole 221 is set to be approximately 40 degrees, and the upper base angle of the axial section of the through hole 21 is set to be approximately 100 degrees, but this is not limiting, and in other embodiments, the lower base angle of the axial section of the tapered hole 221 and the upper base angle of the axial section of the through hole 21 may be set to be other angles as required.
Specifically, the cavity 11 is formed with a stop portion 113 protruding inwards at the rear side of the distribution ring mounting hole 112, the distribution ring 4 is stopped at the stop portion 113, and the rear end of the hydrocyclone 3 is abutted against the distribution ring 4; with this design, the distribution ring 4 can be prevented from being displaced, facilitating positioning of the distribution ring 4 in the distribution ring mounting hole 112.
Referring to fig. 1,4 and 5, specifically, a spherical positioning head 32 is formed at the rear end of the cyclone 3, a circular positioning hole 42 is formed in the middle of the distribution ring 4, and a part of the positioning head 32 extends into the positioning hole 42 and abuts against the front edge of the positioning hole 42; thereby, the distribution ring 4 can be stably positioned in the distribution ring mounting hole 112, and at the same time, the liquid cyclone 3 can be conveniently fixed. In this embodiment, the positioning hole 42 is disposed at the center of the distribution ring 4, and the distribution ring 4 is provided with 3 distribution holes 41,3 distribution holes 41 disposed around the positioning hole 42, but this should not be limiting, and in specific implementation, different numbers of distribution holes 41 may be disposed according to actual situations; preferably, the 3 diversion holes are arranged in a central symmetry manner, and the 3 diversion holes 41 are respectively communicated with the positioning holes 42.
More specifically, the front end of the cyclone 3 circumferentially abuts against the front end of the inner wall of the through hole 21, and the rear end of the nozzle 2 is in a tapered structure gradually decreasing from back to front; by the design, the circumferential positioning of the liquid cyclone 3 can be realized under the cooperation of the distribution ring 4, and the spout 2 with a conical structure can play a role in limiting the axial movement of the liquid cyclone 3, so that the stable installation of the liquid cyclone 3 and the distribution ring 4 is realized; furthermore, the nozzle 2 is provided in a tapered structure gradually decreasing from the rear to the front, so that the flow rate of the fluid can be increased, thereby improving the atomization effect.
Referring to fig. 1,2 and 5, specifically, a first buffer chamber 114 is formed between the distribution ring 4 and the nozzle 2 in the cavity 11, and the outer periphery of the first buffer chamber 114 extends outwards beyond the distribution ring 4; thereby, the fluid flowing out from the diversion holes 41 can be prevented from violently moving, the flow rate of the fluid is stabilized, and the particle size and the spraying angle of the atomized liquid drops are ensured to be consistent; while the flow resistance of the fluid can be reduced. In this embodiment, the total pressure differential between the fluid inlet and the fluid outlet 222 of the hydro-atomizing spray nozzle 100 is less than 0.4MPa at a spray flow rate of 2 m/s.
Referring to fig. 1 and 3, specifically, the front end of the nozzle 2 extends out of the nozzle mounting hole 111, a ring-shaped fixing portion 23 is formed at the front end of the nozzle 2 in an outward protruding manner, and the fixing portion 23 is welded with the front end of the nozzle holder 1 in a sealing manner; thereby, the head 2 can be sealed and fixed to the front end of the head holder 1.
Specifically, an axial gap is formed between the fixing part 23 and the front end of the nozzle holder 1, a sealing gasket 5 is arranged at the axial gap, and the fixing part 23, the sealing gasket 5 and the front end of the nozzle holder 1 are welded in a sealing way; thereby, the tightness between the head 2 and the head holder 1 is improved.
Specifically, the spray head 1 is provided with a gasket groove 24 in a concave manner at a position corresponding to the axial gap, the sealing gasket 5 is positioned in the gasket groove 24, and the outer side of the sealing gasket 5 extends out of the gasket groove 24; by the design, the tightness between the spray head 2 and the spray head seat 1 is further improved.
More specifically, the inner wall of the nozzle mounting hole 111 is formed with an internal thread structure, and the rear end of the nozzle 2 is formed with an external thread structure that mates with the internal thread structure of the nozzle mounting hole 111; thereby, the tightness between the nozzle 2 and the nozzle holder 1 can be further improved by connecting the inner and outer threads and sealing and welding the connection between the fixing portion 23, the sealing gasket 5 and the front end of the nozzle holder 1 while firmly mounting the nozzle 2 in the nozzle mounting hole 111.
Referring to fig. 1, 2 and 5, specifically, the rotary liquid atomizing spray nozzle 100 for high temperature and high pressure environment further includes a mother liquid pipe joint 6 with a hollow structure, a joint mounting hole 115 is formed at the rear end of the cavity 11, and the front end of the mother liquid pipe joint 6 is mounted in the joint mounting hole 115 in a sealing manner; by virtue of this design of the mother liquor pipe joint 6 and the joint mounting hole 115, the swirl atomizing spray nozzle 100 can be connected to an external mother liquor apparatus (not shown), and the mother liquor flowing out of the external mother liquor apparatus can enter the tap hole 41 via the mother liquor pipe joint 6.
More specifically, the inner wall of the joint mounting hole 115 is formed with an internal thread structure, the front end of the mother liquor pipe joint 6 is formed with an external thread structure matched with the internal thread structure of the joint mounting hole 115, and the mother liquor pipe joint 6 is welded with the rear end of the nozzle mounting seat 111 in a circumferential sealing manner; by means of the design, the front end of the mother liquor pipe joint 6 can be firmly installed in the joint installation hole 115, and the tightness between the mother liquor pipe joint 6 and the nozzle base 1 can be further improved through the mode of sealing and welding the joint of the mother liquor pipe joint 6 and the rear end of the nozzle installation base 111 through internal and external threaded connection, so that the connection between the mother liquor pipe joint 6 and the nozzle base 1 is more stable.
Referring to fig. 2, specifically, a joint mounting hole 115 is formed at the rear end of the cavity 11, a second buffer cavity 116 is formed between the joint mounting hole 115 and the distribution ring mounting hole 112, the second buffer cavity 116 includes a cylindrical first buffer portion 1161 at the rear end and a tapered second buffer portion 1162 at the front end, the size of the rear end of the second buffer portion 1162 is larger than that of the front end of the second buffer portion 1161, the front end of the first buffer portion 1161 is connected with the rear end of the second buffer portion 1162, and the outer periphery of the first buffer portion 1161 extends outwards beyond the joint mounting hole 115; by this design, the flow resistance of the fluid is reduced while stabilizing the flow rate of the fluid. In the present embodiment, the front end of the second buffer portion 1161 extends forward along the cavity 11 to form the stopper portion 113.
Preferably, in order to prevent mutual damage between contact surfaces due to different characteristics of different materials in a high-temperature and high-pressure environment, in this embodiment, the materials of the components such as the nozzle base 1, the nozzle 2, the cyclone 3, the distribution ring 4, etc. are the same, but the present invention is not limited thereto.
Referring to fig. 1, in the present embodiment, a mother liquor pipe joint 6 is connected with a flange cover 7, and the flange cover 7 connects the mother liquor pipe joint 6 with external mother liquor equipment; in this embodiment, the flange cover 7 is connected to the mother liquor pipe joint 6 by welding. Preferably, three centering round bars 8 are symmetrically arranged on the mother liquor pipe joint 6, and the centering round bars 8 can be matched with external equipment (not shown), so that the rotation and centering of the atomization spray angle 100 during installation are facilitated; in the present embodiment, the centering rod 8 is welded to the mother liquor pipe joint 6, but this is not a limitation.
In order to more specifically describe the technical solution of the present invention, the method for assembling and the process for installing the liquid-spinning atomizing spray nozzle 100 for high-temperature and high-pressure environment will be described below by taking specific embodiments of the present invention as examples.
Firstly, the nozzle base 1 is connected with the mother liquor pipe joint 6 in a threaded manner, and the distribution ring 4 is inserted into the distribution ring mounting hole 112 from the nozzle mounting hole 111; next, the gasket 5 is mounted in the gasket groove 24, and then the cyclone 3 is put into the through-flow hole 21, and the front end of the cyclone 3 is abutted against the front end of the inner wall of the through-flow hole 21; then, the spray head 2 and the spray head seat 1 are connected in a threaded manner until the positioning head 32 of the liquid rotator 3 extends into the positioning hole 42 of the distribution ring 4 and abuts against the front end edge of the positioning hole 42, at this time, the spray head 2 and the spray head seat 1 are also installed in place, and the sealing gasket 5 is extruded between the front end of the spray head seat 1 and the fixing part of the spray head 2; then, symmetrically welding three centering round bars 8 at a proper position of the mother liquor pipe joint 6 from the nozzle base 1, and then installing a flange cover 7 from the rear end of the mother liquor pipe joint 6; finally, the outer periphery of the joint between the flange cover 7 and the mother liquor pipe joint 6, the outer periphery of the joint between the nozzle base 1 and the mother liquor pipe joint 6, and the outer periphery of the joint between the sealing gasket 5 and the nozzle base 1 of the fixing part 23 are welded.
The specific working process of the rotary liquid atomizing spray nozzle 100 for the high-temperature and high-pressure environment is as follows: after entering the mother liquor pipe joint 6 from the equipment for providing the mother liquor, the fluid enters the second buffer cavity 116, and is evenly distributed to the three circular diversion holes 41 of the distribution ring 4 after flowing out from the second buffer cavity 116, and at the moment, the fluid is accelerated; the fluid flowing out of the diversion hole 41 enters the first buffer cavity 114, then enters the through hole 21, and then passes through the thread groove 31 outside the cyclone 3, and at this time, the fluid is accelerated again; the fluid enters the tapered hole 221 after passing through the thread groove 31, and then passes through the tapered hole 221, at this time, the fluid is accelerated again; the fluid flowing out from the conical hole 221 enters the fluid outlet 222, and finally is quickly sprayed into the high-temperature and high-pressure container from the fluid outlet 222 in the form of mist droplets, so that the effect of quickly reducing the temperature and the pressure is realized.
Compared with the prior art, the distribution ring 4 is arranged at the rear side of the spray head 2, the liquid cyclone 3 is arranged in the through-flow hole 21 of the spray head 2, and fluid entering the liquid cyclone atomization spray nozzle 100 enters the through-flow hole 21 through the flow-distribution hole 41 of the distribution ring 4, passes through the spiral groove 31 outside the liquid cyclone 3 and is sprayed out from the spray nozzle 22; the invention divides the fluid entering the distribution ring 4 into at least two streams by the at least two diversion holes 41 of the distribution ring 4, thereby accelerating the flow rate of the fluid, reducing the flow resistance of the fluid and improving the uniformity of atomized liquid drops, so that the fluid can be more quickly and uniformly distributed to the circumferential area of the liquid cyclone 3, and the atomization effect is enhanced; moreover, when the fluid entering the through-flow hole 21 passes through the spiral groove 31 outside the cyclone 3, the fluid is accelerated again and then enters the conical hole 221, and the fluid is accelerated again when passing through the conical hole 221, so that the fluid has a sufficient speed when being sprayed out from the fluid outlet 222, and the atomization effect is better; in addition, the periphery of the joint of the flange cover 7 and the mother liquor pipe joint 6, the periphery of the joint of the nozzle base 1 and the mother liquor pipe joint 6, the periphery of the joint of the fixing part 23, the sealing gasket 5 and the nozzle base 1 are welded in a sealing way, and the whole structure has good tightness and safety; in addition, because the structural components of the spray head seat 1, the spray head 2, the liquid rotator 3, the distribution ring 4 and the like are all made of the same material, the contact surfaces of the structural components are not damaged by the different characteristics of the materials in a high-temperature high-pressure environment; the liquid cyclone atomization spray nozzle 100 is of an integrated structure, the distribution ring 4, the liquid cyclone 3, the spray head 2 and the spray head seat 1 do not move relatively, mutual friction loss among structural parts does not exist, and the overall structure is more stable and firm and can be suitable for a high-temperature and high-pressure environment; in addition, the rotary liquid atomizing spray nozzle 100 has a simple structure and is easy to process and manufacture.
The foregoing disclosure is merely illustrative of the principles of the present invention, and thus, it is intended that the scope of the invention be limited thereto and not by this disclosure, but by the claims appended hereto.
Claims (15)
1. A liquid-spinning atomizing spray nozzle for a high temperature and high pressure environment, comprising: the spray head comprises a spray head seat, a spray head, a liquid rotator and a distribution ring, wherein the spray head seat is provided with a cavity penetrating front and back, the cavity comprises a spray head mounting hole at the front end of the cavity and a distribution ring mounting hole at the rear side of the spray head mounting hole, the distribution ring is arranged in the distribution ring mounting hole, the distribution ring is provided with at least two distribution holes, the spray head is arranged in the spray head mounting hole and is provided with a through hole and a spray nozzle, the through hole penetrates through the spray head backwards, the rear end of the spray nozzle is communicated with the front end of the through hole, the front end of the spray nozzle penetrates through the spray head forwards, the liquid rotator is arranged in the through hole, a spiral groove is formed outside the liquid rotator, and the front end of the spiral groove is communicated with the spray nozzle;
A first buffer cavity is formed between the distribution ring and the spray head, and fluid flowing out of the flow dividing hole enters the first buffer cavity, then enters the through hole and then passes through the spiral groove outside the cyclone;
a circumferential gap which gradually decreases from back to front is formed between the liquid cyclone and the inner wall of the through hole, and the front end of the liquid cyclone is in circumferential abutting connection with the front end of the inner wall of the through hole;
The through-flow hole is conical, and the size of the rear end of the through-flow hole is larger than that of the front end of the through-flow hole.
2. The spray nozzle for atomizing a liquid cyclone in a high-temperature and high-pressure environment as recited in claim 1, wherein said spiral groove is a thread groove having a certain helix angle.
3. The spray nozzle for the rotary liquid atomizing and spraying in the high-temperature and high-pressure environment according to claim 1, wherein the spray nozzle comprises a tapered hole and a fluid outlet, the front end of the tapered hole is smaller than the rear end of the tapered hole, the rear end of the tapered hole is connected with the front end of the through-flow hole, and the fluid outlet is connected with the front end of the tapered hole.
4. The spray nozzle for atomizing a liquid cyclone in a high-temperature and high-pressure environment according to claim 1, wherein the cavity is formed with a stop portion protruding inwards at the rear side of the distribution ring mounting hole, the distribution ring is stopped at the stop portion, and the rear end of the liquid cyclone is abutted against the distribution ring.
5. The spray nozzle for atomizing a liquid cyclone in a high-temperature and high-pressure environment according to claim 4, wherein a spherical positioning head is formed at the rear end of the liquid cyclone, a circular positioning hole is formed in the middle of the distribution ring, and the positioning head part extends into the positioning hole and abuts against the front end edge of the positioning hole.
6. The spray nozzle for atomizing a liquid cyclone in a high-temperature and high-pressure environment as claimed in claim 4 or 5, wherein a front end of the liquid cyclone is circumferentially abutted against a front end of an inner wall of the through-flow hole.
7. The spray nozzle for the liquid-spinning atomizing in a high-temperature and high-pressure environment according to claim 6, wherein the rear end of the nozzle has a tapered structure gradually decreasing from the rear to the front.
8. The spray nozzle for the liquid spinner in a high temperature and high pressure environment of claim 1, wherein the outer periphery of said first buffer chamber extends outwardly beyond said distribution ring.
9. The rotary liquid atomizing spray nozzle for a high-temperature and high-pressure environment according to claim 1, wherein the front end of the spray head extends out of the spray head mounting hole, an annular fixing part is outwards protruded from the front end of the spray head, and the fixing part is welded with the front end of the spray head seat in a sealing manner.
10. The rotary liquid atomizing spray nozzle for a high-temperature and high-pressure environment according to claim 9, wherein an axial gap is formed between the fixing part and the front end of the nozzle base, a sealing gasket is arranged at the axial gap, and the fixing part, the sealing gasket and the front end of the nozzle base are welded in a sealing way.
11. The spray nozzle for atomizing a liquid spinner for a high-temperature and high-pressure environment as set forth in claim 10, wherein said spray head is provided with a gasket groove recessed inward at a position corresponding to said axial gap, said sealing gasket is positioned in said gasket groove, and the outer side of said sealing gasket extends outward from said gasket groove.
12. The spray nozzle for atomizing a liquid according to any one of claims 9 to 11, wherein an inner wall of the nozzle mounting hole is formed with an internal screw structure, and a rear end of the nozzle is formed with an external screw structure fitted with the internal screw structure of the nozzle mounting hole.
13. The spray nozzle for atomizing a spinning solution in a high-temperature and high-pressure environment according to claim 1, further comprising a mother liquor pipe joint of a hollow structure, wherein a joint mounting hole is formed at the rear end of the cavity, and the front end of the mother liquor pipe joint is mounted in the joint mounting hole in a sealing manner.
14. The spray nozzle for atomizing a liquid in a high-temperature and high-pressure environment according to claim 13, wherein an inner wall of the joint mounting hole is formed with an inner screw structure, a front end of the mother liquor pipe joint is formed with an outer screw structure matched with the inner screw structure of the joint mounting hole, and the mother liquor pipe joint is welded with a rear end of the nozzle mounting seat in a circumferential sealing manner.
15. The rotary liquid atomizing spray nozzle for a high-temperature and high-pressure environment according to claim 1, wherein a joint mounting hole is formed at the rear end of the cavity, a second buffer cavity is formed between the joint mounting hole and the distribution ring mounting hole, the second buffer cavity comprises a cylindrical first buffer part at the rear end and a conical second buffer part at the front end, the rear end of the second buffer part is larger than the front end of the second buffer part in size, the front end of the first buffer part is connected with the rear end of the second buffer part, and the outer periphery of the first buffer part outwards exceeds the joint mounting hole.
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| CN109866928A (en) * | 2019-04-10 | 2019-06-11 | 临沂大学 | A kind of atomizing and spraying apparatus for plant protection drone |
| CN110465418A (en) * | 2019-09-03 | 2019-11-19 | 镇江市长江机电设备厂有限公司 | It is a kind of for being atomized the atomizer of oil purifier |
| CN111841991A (en) * | 2020-06-23 | 2020-10-30 | 江苏食品药品职业技术学院 | Ultrasonic nozzle atomizing device |
| CN111794862B (en) * | 2020-07-15 | 2021-10-22 | 山东大学 | Deicing device and deicing method for air intake lip of aero-engine |
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