CN115218572B - Nozzle for snowmaking machine for adjusting hydraulic balance and control method - Google Patents
Nozzle for snowmaking machine for adjusting hydraulic balance and control method Download PDFInfo
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- CN115218572B CN115218572B CN202210885905.6A CN202210885905A CN115218572B CN 115218572 B CN115218572 B CN 115218572B CN 202210885905 A CN202210885905 A CN 202210885905A CN 115218572 B CN115218572 B CN 115218572B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
- F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- 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
- B05B1/06—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 in annular, tubular or hollow conical form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
- F25C2303/048—Snow making by using means for spraying water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2600/00—Control issues
- F25C2600/04—Control means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a nozzle for a snowmaking machine for adjusting hydraulic balance and a control method thereof. When the outlet pressure of the nozzle above the snowmaking machine is insufficient and the flow is reduced, the high-area nozzle can be adjusted to be in a small resistance mode, the low-area nozzle can be adjusted to be in a large resistance mode, the pressure and the flow of the waterway above and below are balanced, the non-uniformity of the flow and the speed is avoided, the atomization effect is ensured, and the quality of the formed snow is improved; meanwhile, the balance resistance can reduce unnecessary pressurization of the water pump, protect the water pump and save energy. The invention can ensure the atomization effect, improve the snow quality, reduce unnecessary pressurization of the water pump, protect the water pump, save energy and prolong the service life of equipment.
Description
Technical Field
The invention belongs to the technical field of snowmakers, and particularly relates to a nozzle for a snowmaker for adjusting hydraulic balance and a control method.
Background
Snow makers have been one of the indispensable equipment for ensuring the operation of a winter ski field as a snowmaking device that provides stable snow resources. The most widely used internal mixing type snow making machine at present adopts a nucleon device and a rotational flow nozzle as core atomization components, high-pressure water is sprayed and atomized through the nozzle to form fine water drops, and then the fine water drops collide with ice crystal cores provided by the nucleon device and are catalyzed and frozen to form snowflakes. In the conventional snowmaking machine, the nozzles are vertically distributed on the circumference of the air duct, and in the process that high-pressure water is conveyed to the nozzles by the water pump below, the water outlet of the high-area nozzle pipeline needs to overcome more on-way resistance loss and local resistance loss, so that the pressure water head of the high-area pipeline is reduced, the flow of the high-area pipeline is reduced at a certain pipe diameter, and the water outlet and outlet speed of the high-area nozzle are reduced. The reduction of the outlet speed increases the particle size of atomized liquid drops, so that the atomization effect is uneven, and the quality of snow is seriously affected. Therefore, in order to further improve the snow forming effect and the system performance of the snow making machine, the snow making machine is required to be optimized structurally so as to solve the problem that the outlet water quantity and the speed distribution of the snow making machine are not uniform at different heights, and further ensure the quality of formed snow and the efficiency of a machine set.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide a nozzle for a snowmaking machine and a control method for adjusting hydraulic balance, wherein the nozzle for the snowmaking machine can change the sectional area of an inlet of the nozzle by adjusting the position of an inlet piston through a rotary structure, so that the flow resistance of an outlet is effectively adjusted, and the hydraulic balance among the nozzles of the snowmaking machine is improved. When the outlet pressure of the high-area nozzle of the snowmaking machine is insufficient and the flow is reduced, the high-area nozzle can be adjusted to be in a small resistance mode, the low-area nozzle can be adjusted to be in a large resistance mode, the pressure and the flow of the waterway above and below are balanced, the non-uniformity of the flow and the speed is avoided, the atomization effect is ensured, and the quality of the formed snow is improved; meanwhile, the balance resistance can reduce unnecessary pressurization of the water pump, protect the water pump and save energy. The invention can ensure the atomization effect, improve the snow quality, reduce unnecessary pressurization of the water pump, protect the water pump, save energy and prolong the service life of equipment.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a nozzle for a snowmaking machine for adjusting hydraulic balance comprises a fixed inlet 2 and a rotary structure 1 connected to the upper part of the fixed inlet 2; the rotary structure 1 comprises a shell 3, an inner core 4, an inlet piston 5, a swirl groove 6, a swirl chamber 7 and an outlet 8; the inner core 4 is positioned in the shell 3 and fixedly connected with the shell 3, and a swirl groove 6 is formed between the surface of the inner core 4 and the shell 3 for water flow; the outlet 8 is arranged at the top of the shell 3, a hollow cavity formed between the shell 3 and the inner core 4 in the direction close to the outlet 8 is a rotational flow cavity 7, and water flows in the rotational flow cavity 7 in a rotating way; the inlet piston 5 is a protruding structure of the inner core 4 near the fixed inlet and is used for controlling the flow cross section of the fixed inlet, the cross section of the inlet piston is elliptical, the length of the long axis is a, the length of the short axis is b, and a is larger than b; an inlet section 10 is formed between the inlet piston 5 and the shell 3 for water to pass through, and the inlet section 10 is the flow sectional area at the fixed inlet; with the rotation of the rotary structure 1, the flow area of the inlet section 10 is changed, water flow is blocked to different degrees, the local resistance of the nozzle is changed, and the hydraulic balance effect is realized; during operation, water flow enters the nozzle through the fixed inlet 2, enters the swirl groove 6 through the inlet section 10 to obtain rotational acceleration, and then is rotationally flown in the swirl cavity 7 and then is swirl-ejected from the outlet 8 to form hollow cone-shaped spray; the nozzle has a large resistance mode and a small resistance mode, when the rotary structure 1 is rotated to enable the short axis of the inlet piston 5 with an elliptical section to reach the position of the inlet section 10, the blocking area of the inlet section 10 is small, the flow area is maximum, and the nozzle is in a small resistance mode and has the minimum flow resistance; when the rotary structure 1 is rotated so that the inlet piston 5 with an elliptical cross section is long to the position of the inlet cross section 10, the inlet cross section 10 is blocked with a large area, and the flow area is the smallest, and the flow resistance is the largest in the large resistance mode.
Further, the rotation structure 1 and the fixed inlet 2 rotate through a slideway 9.
The control method of the nozzles for the snow making machine capable of adjusting the hydraulic balance comprises the steps that the nozzles are distributed in the periphery of an outlet of a wind barrel of the snow making machine, and the nozzles are divided into three groups of a high area, a middle area and a low area according to the height of the distribution position; when the snowmaking machine is in initial operation, all nozzles of the snowmaking machine are set to be in a small resistance mode, and when the outlet pressure of the nozzles in a high area of the snowmaking machine is insufficient and the flow is reduced, the nozzles in the high area are kept unchanged in the small resistance mode, and the nozzles in the low area are rotated towards the direction of the large resistance mode; if the outlet flow of the high-area nozzle is still insufficient, the middle-area nozzle is rotated towards the direction of the large-resistance mode until the flow is sufficient and uniform, the pressure and the flow of the upper waterway and the lower waterway are balanced, the flow and the speed non-uniformity are avoided, the atomization effect is ensured, and the snow quality is improved.
Compared with the prior art, the invention has the following obvious advantages:
1) The invention provides a nozzle for a snowmaking machine for adjusting hydraulic balance and a control method thereof, wherein the nozzle for the snowmaking machine can adjust the flow resistance of an outlet through a rotary structure, balance the pressure and flow of a waterway above and below, avoid the non-uniformity of flow and speed, ensure the atomization effect and improve the quality of the formed snow;
2) The nozzle for the snowmaking machine for adjusting the hydraulic balance can effectively avoid unnecessary pressurization of the water pump, protect the water pump, prolong the service life of equipment and save energy.
Drawings
FIG. 1a is a schematic view showing the external structure of a nozzle for a snowmaking machine for adjusting hydraulic balance according to the present invention; FIG. 1b is a schematic view showing the internal structure of a nozzle for a snowmaking machine for adjusting hydraulic balance according to the present invention.
FIG. 2a is a top view of the small drag mode of the snowmaking nozzle of the present invention adjusting hydraulic balance; FIG. 2b is a cross-sectional view of the small drag pattern A-A of the snowmaking nozzle of the present invention adjusting hydraulic balance; FIG. 2c is a cross-sectional view of the nozzle for the snowmaking machine of the invention in a low drag mode B-B for adjusting hydraulic balance.
FIG. 3a is a top view of the high drag mode of the snowmaking nozzle of the present invention adjusting hydraulic balance; FIG. 3b is a cross-sectional view of the high resistance mode A-A of the snowmaking nozzle of the present invention for adjusting hydraulic balance; FIG. 3c is a cross-sectional view of the nozzle for the snowmaking machine according to the present invention in the high drag mode B-B.
FIG. 4 is a schematic view showing the arrangement of the nozzles for the snowmaking machine for adjusting the hydraulic balance in the partition within the outlet circumference of the snowmaking machine air duct according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more concise, the present invention will be described in further detail below with reference to the accompanying drawings and an embodiment. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1a and 1b, the nozzle for a snowmaking machine for adjusting hydraulic balance and the control method of the invention are composed of a rotating structure 1 and a fixed inlet 2.
The rotary structure 1 comprises a housing 3, an inner core 4, an inlet piston 5, a swirl groove 6, a swirl chamber 7 and an outlet 8. The inner core 4 is positioned inside the shell 3 and fixedly connected with the shell 3, and a swirl groove 6 is formed between the surface of the inner core 4 and the shell 3 for water to flow through. The outlet 8 is arranged at the top of the shell 3, a hollow cavity formed between the shell 3 and the inner core 4 in the direction close to the outlet 8 is a rotational flow cavity 7, and water flow can flow in the rotational flow cavity 7 in a rotating mode. The inlet piston 5 is a protruding structure of the inner core 4 near the fixed inlet for controlling the flow cross section of the nozzle inlet, the cross section is elliptical, the length of the long axis is a, and the length of the short axis is b, a > b. An inlet section 10 is formed between the inlet piston 5 and the housing 3 for water to pass through, and the inlet section 10 is the flow cross section of the fixed inlet. The rotary structure 1 and the fixed inlet 2 are rotated by a slideway 9. With the rotation of the rotary structure 1, the flow area of the inlet section 10 is changed, so that water flow can be blocked to different degrees, the local resistance of the nozzle is changed, and the hydraulic balance effect is realized. In operation, water flow enters the nozzle through the fixed inlet 2, enters the swirl groove 6 through the inlet section 10 to obtain rotational acceleration, and then is rotationally flown in the swirl cavity 7 and then is swirl-ejected from the outlet 8 to form hollow cone-shaped spray. The nozzle has two resistance modes of large and small, as shown in fig. 2a, 2b and 2c, when the rotary structure 1 is rotated to enable the inlet piston 5 with an elliptical section to be positioned from the short axis to the inlet section 10, the blocking area of the inlet section 10 is small, the flow area is maximum, and the mode is a small resistance mode and the flow resistance is minimum; as shown in fig. 3a, 3b and 3c, when the rotary structure 1 is rotated such that the long axis of the inlet piston 5 having an elliptical cross section is positioned to the inlet cross section 10, the inlet cross section 10 is blocked with a large area, and the flow area is minimized, and in this case, the flow resistance is maximized in a large resistance mode.
The control method comprises the following steps:
as shown in FIG. 4, the nozzles are arranged in the periphery of the outlet of the snowmaking machine wind barrel, and the nozzles can be divided into three groups of a high area, a middle area and a low area according to the height of the arrangement positions. When the snow making machine is in initial operation, all nozzles of the snow making machine are set to be in a small resistance mode, and when the outlet pressure of the high-area nozzle of the snow making machine is insufficient and the flow is reduced, the high-area nozzle can be kept unchanged in the small resistance mode, and the low-area nozzle can be rotated towards the direction of the large resistance mode; if the outlet flow of the high-area nozzle is still insufficient, the middle-area nozzle is rotated towards the direction of the large-resistance mode until the flow is sufficient and uniform.
Claims (2)
1. A nozzle for a snowmaking machine for adjusting hydraulic balance, characterized in that: comprises a fixed inlet (2) and a rotary structure (1) connected to the upper part of the fixed inlet (2); the rotary structure (1) comprises a shell (3), an inner core (4), an inlet piston (5), a cyclone groove (6), a cyclone cavity (7) and an outlet (8); the inner core (4) is positioned in the shell (3) and fixedly connected with the shell (3), and a rotary groove (6) is formed between the rotary thread on the surface of the inner core (4) and the shell (3) for water to pass through; the outlet (8) is arranged at the top of the shell (3), a hollow cavity formed between the shell (3) and the inner core (4) in the direction close to the outlet (8) is a rotational flow cavity (7), and water flows in the rotational flow cavity (7) in a rotating way; the inlet piston (5) is of a protruding structure of the inner core (4) close to the fixed inlet and is used for controlling the flow cross section of the fixed inlet, the cross section of the inlet piston is elliptical, the length of the long axis is a, the length of the short axis is b, and a is larger than b; an inlet section (10) is formed between the inlet piston (5) and the shell (3) for water to pass through, and the inlet section (10) is the flow cross section of the fixed inlet; with the rotation of the rotary structure (1), the flow area of the inlet section (10) is changed, water flow is blocked to different degrees, the local resistance of the nozzle is changed, and the hydraulic balance effect is realized; during operation, water flow enters the nozzle through the fixed inlet (2), enters the swirl groove (6) through the inlet section (10) to obtain rotational acceleration, and then flows in the swirl cavity (7) in a rotating way and is ejected out of the outlet (8) in a swirling way to form hollow cone-shaped spray; the nozzle is provided with a large resistance mode and a small resistance mode, when the rotary structure (1) is rotated to enable the short axis of the inlet piston (5) with the elliptical section to reach the position of the inlet section (10), the blocking area of the inlet section (10) is small, the flow area is maximum, and the nozzle is in the small resistance mode and the flow resistance is minimum; when the rotary structure (1) is rotated to enable the long axis of the inlet piston (5) with the elliptical section to reach the position of the inlet section (10), the blocking area of the inlet section (10) is large, the flow area is minimum, and the flow resistance is maximum in a large resistance mode;
the nozzles are arranged in the periphery of an outlet of the snowmaking machine air duct, and are divided into three groups of a high area, a middle area and a low area according to the height of the arrangement positions; when the snowmaking machine is in initial operation, all nozzles of the snowmaking machine are set to be in a small resistance mode, and when the outlet pressure of the nozzles in a high area of the snowmaking machine is insufficient and the flow is reduced, the nozzles in the high area are kept unchanged in the small resistance mode, and the nozzles in the low area are rotated towards the direction of the large resistance mode; if the outlet flow of the high-area nozzle is still insufficient, the middle-area nozzle is rotated towards the direction of the large-resistance mode until the flow is sufficient and uniform, the pressure and the flow of the upper waterway and the lower waterway are balanced, the flow and the speed non-uniformity are avoided, the atomization effect is ensured, and the snow quality is improved.
2. A nozzle for a snowmaking machine for adjusting hydraulic balance according to claim 1, wherein: the rotary structure (1) and the fixed inlet (2) rotate through a slideway (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210885905.6A CN115218572B (en) | 2022-07-26 | 2022-07-26 | Nozzle for snowmaking machine for adjusting hydraulic balance and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210885905.6A CN115218572B (en) | 2022-07-26 | 2022-07-26 | Nozzle for snowmaking machine for adjusting hydraulic balance and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115218572A CN115218572A (en) | 2022-10-21 |
| CN115218572B true CN115218572B (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210885905.6A Active CN115218572B (en) | 2022-07-26 | 2022-07-26 | Nozzle for snowmaking machine for adjusting hydraulic balance and control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2015259A1 (en) * | 1990-04-24 | 1991-10-24 | Louis Handfield | Snow making machine |
| CN202860734U (en) * | 2012-10-29 | 2013-04-10 | 宜兴台玉环境工程设备有限公司 | High-density flow nozzle |
| CN105709953A (en) * | 2016-01-29 | 2016-06-29 | 芜湖市海联机械设备有限公司 | Flow-adjustable nozzle |
| CN106733318A (en) * | 2015-11-19 | 2017-05-31 | 北京中联佳华科技有限公司 | A kind of modular snowmaker end atomising head |
| CN114111144A (en) * | 2021-10-26 | 2022-03-01 | 北京建筑大学 | Large-snow-volume snow making machine adaptive to climatic conditions and nozzle control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL221038B1 (en) * | 2012-01-13 | 2016-02-29 | Dziubasik Damian Sn Supersnow | Liquid spray nozzle, especially the water in the artificial snow cannon |
-
2022
- 2022-07-26 CN CN202210885905.6A patent/CN115218572B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2015259A1 (en) * | 1990-04-24 | 1991-10-24 | Louis Handfield | Snow making machine |
| CN202860734U (en) * | 2012-10-29 | 2013-04-10 | 宜兴台玉环境工程设备有限公司 | High-density flow nozzle |
| CN106733318A (en) * | 2015-11-19 | 2017-05-31 | 北京中联佳华科技有限公司 | A kind of modular snowmaker end atomising head |
| CN105709953A (en) * | 2016-01-29 | 2016-06-29 | 芜湖市海联机械设备有限公司 | Flow-adjustable nozzle |
| CN114111144A (en) * | 2021-10-26 | 2022-03-01 | 北京建筑大学 | Large-snow-volume snow making machine adaptive to climatic conditions and nozzle control method thereof |
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| Publication number | Publication date |
|---|---|
| CN115218572A (en) | 2022-10-21 |
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