Temperature adjusting system and method in air-supported membrane structure space based on cluster vortex tube

Abstract

The invention discloses a temperature adjusting system and method in an air-supported membrane structure space based on a cluster vortex tube, and the system is characterized in that the system comprises a fan set air flow boosting device, a vortex tube direction adjusting device and a pipeline erected on a wall surface; the air flow boosting device of the fan set is composed of a plurality of modular boosting units and comprises an air flow inlet flange, a power air duct, a static boosting impeller, an air flow outlet flange, a locking nut, a movable boosting impeller, a main shaft and a bearing, and the air flow inlet flange and the air flow outlet flange are installed at the two ends of a shell of each boosting unit. According to the temperature adjusting method, on the basis of the vortex tube technology for the cluster air conditioner, dozens of sets of vortex tubes with the similar traditional air conditioner temperature adjusting capacity are used, multiple sets of fans arranged on an air-supported membrane structure building serve as air sources, and a special pressure boosting device is used for converting large-flow airflow into high-pressure fluid; and high-pressure airflow is guided into the vortex tube cluster through a pipeline system with a special layout design, so that temperature adjustment is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature regulation in a closed space, and in particular to a temperature regulation system and method in a closed space of an air-supported membrane structure based on clustered vortex tubes. Background Art

[0002] In recent years, large-scale air-supported membrane structures have gradually gained a certain market scale in China, and are mainly used in large-scale closed material plants and air-supported gymnasiums, such as Figure 1 It is a large enclosed material yard. According to the survey, in large air-supported membrane structure buildings (usually with an area of ​​several thousand square meters or tens of thousands of square meters), in the summer in the north, the space temperature of the membrane structure can reach about 50℃; while in winter, the space temperature is generally around 10℃, both of which are beyond the comfortable temperature range for the human body.

[0003] At present, the commonly used cooling and heating technologies include air conditioning systems, and cooling by increasing heat sources or cold sources and using flowing air. However, for large enclosed spaces such as air-supported membrane structures, due to their large cooling and heating areas, the use of traditional air conditioning technology requires too many air conditioners to be installed, which is costly. Furthermore, due to the architectural characteristics of air-supported membrane structures, the structure must be supported by the air pressure difference between the inside and outside, so it is also difficult to use air flow to achieve cooling. Summary of the invention

[0004] The purpose of the present invention is to provide a temperature control system and method for an air-supported membrane structure space based on a clustered vortex tube. On the basis of the existing low-temperature difference vortex tube 10, a clustered vortex tube system is formed by rationally arranging it, and the fans equipped in this type of building construction are used as the working air source and power air source of the vortex tube. Usually, for membrane structure buildings of tens of thousands of square meters, more than a dozen high-power fans are generally equipped for film blowing and film starting. Most of these fans are idle during normal operation. Using these air sources to drive the vortex tube temperature control device to work not only makes full use of the air source, but also is a set of low-cost large-scale enclosed space temperature control technology that can replace air conditioning, thereby solving the problems of too many air conditioners to be installed using traditional air conditioning technology and high costs mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature control system and method for a space of an air-supported membrane structure based on a clustered vortex tube, characterized in that it comprises a wind flow boosting device of a fan unit, a vortex tube turning device and a pipeline erected on a wall;

[0006] The wind flow boosting device of the fan unit is composed of multiple groups of modular boosting units, including wind flow inlet flange, power air duct, static boosting impeller, wind flow outlet flange, locking nut, dynamic boosting impeller, main shaft, bearing, wind flow inlet flange and wind flow outlet flange are installed at both ends of the shell of the boosting unit, and the power air duct is arranged on the shell body, the main shaft is arranged in the middle of the boosting unit, the bearing is installed at one end of the main shaft close to the wind flow inlet flange, and the locking nut is installed at one end close to the wind flow outlet flange, and the shaft body of the main shaft is sequentially installed with multiple groups of dynamic boosting impellers and static boosting impellers;

[0007] The vortex tube turning device comprises a baffle, a low temperature difference vortex tube, a spherical air outlet shell, a wind direction adjustment mechanism, a spherical air guide cover and a universal spherical pair, wherein the baffle is installed on the vortex tube, the spherical air outlet shell is fixed to the inner ring of the baffle, the spherical air guide cover is arranged inside the spherical air outlet shell, the spherical air guide cover and the spherical air outlet shell are connected through a universal spherical pair, the low temperature difference vortex tube is installed inside the spherical air guide cover, and the wind direction adjustment mechanism is installed on the spherical air outlet shell;

[0008] The pipeline is arranged in the square through hole inside the wall.

[0009] Preferably, the boost units are connected in series via a main shaft.

[0010] Preferably, the dynamic boost impeller is composed of driving blades at the periphery and boost blades at the core.

[0011] Preferably, the booster blades have a special streamlined structure and layout, with a narrow inlet and a wide outlet between adjacent blades.

[0012] Preferably, the pipeline arrangement method comprises the following steps:

[0013] Step 1: Open a square hole of suitable size in the wall;

[0014] Step 2: Every four vortex tubes and their pipelines form a group, and a group of booster devices provide pressure gas source;

[0015] Step 3: Arrange sixteen vortex tubes on each foundation wall, four at each corner and eight in the middle.

[0016] Preferably, a method for regulating the temperature in a space of an air-supported membrane structure based on clustered vortex tubes comprises the following steps of arranging a temperature regulating system in a space of an air-supported membrane structure based on clustered vortex tubes:

[0017] S1: The outlet direction of the vortex tube is arranged perpendicular to the wall;

[0018] S2: When it is necessary to switch between cooling and heating, all vortex tubes can be turned 180° by the vortex tube turning mechanism.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the temperature control method of the present invention is based on the vortex tube technology for cluster air conditioners, using dozens of vortex tubes with similar temperature control capabilities to traditional air conditioners, using multiple sets of fans equipped with air-supported membrane structure buildings as air sources, and using a special booster device to convert large-flow airflow into a higher-pressure fluid, and then using a specially designed pipeline system to introduce the high-pressure airflow into the vortex tube cluster to achieve temperature control; at the same time, a set of vortex tube direction adjustment mechanisms are designed to meet the different needs of cooling and heating conditions in winter and summer. Finally, long-term temperature control in the human activity area of ​​a large air-supported membrane structure space is achieved. Numerical simulation results show that this technology can achieve better temperature control effects and can keep the human activity area of ​​the air-supported membrane structure space within a comfortable temperature range for the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the boosting device of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the boosting device of the present invention;

[0022] Figure 3 This is a schematic diagram of the heating structure of the vortex tube direction-changing device of the present invention;

[0023] Figure 4 This is a schematic diagram of the refrigeration structure of the vortex tube turning device of the present invention;

[0024] Figure 5 It is a schematic diagram of the arrangement structure of the internal airway pipeline of the air-supported membrane structure of the present invention;

[0025] Figure 6 This is the temperature field distribution diagram in the vertical direction of the present invention;

[0026] Figure 7 This is the horizontal temperature field distribution diagram of the present invention at 1.5 meters above the ground.

[0027] In the figure: 1. airflow inlet flange; 2. power air duct; 3. static boost impeller; 4. airflow outlet flange; 5. locking nut; 6. dynamic boost impeller; 7. main shaft; 8. bearing; 9. baffle; 10. low temperature difference vortex tube; 11. spherical air outlet housing; 12. wind direction adjustment mechanism; 13. spherical guide cover;

[0028] 14. Universal spherical pair. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-5 The present invention provides a technical solution: a temperature control system and method for a space of an air-supported membrane structure based on a clustered vortex tube, comprising a wind flow boosting device of a fan unit, a vortex tube turning device and a pipeline mounted on a wall;

[0031] The airflow boosting device of the fan unit is composed of a plurality of modular boosting units, which are connected in series through a main shaft 7 and can boost the airflow step by step. The boosting units are connected in series according to the needs to meet the needs of different boosting, including an airflow inlet flange 1, a power air duct 2, a static boosting impeller 3, an airflow outlet flange 4, a locking nut 5, a dynamic boosting impeller 6, a main shaft 7, and a bearing 8. The airflow inlet flange 1 and the airflow outlet flange 4 are installed at both ends of the shell of the boosting unit, and the power air duct 2 is arranged on the shell body. The main shaft 7 is arranged in the middle of the boosting unit, and the bearing 8 is installed at the end of the main shaft 7 close to the airflow inlet flange 1, and the locking nut 5 is installed at the end close to the airflow outlet flange 4. The shaft body of the main shaft 7 is sequentially installed with a plurality of dynamic boosting impellers 6 and static boosting impellers 3; the dynamic boosting impeller 6 is composed of peripheral driving blades and core boosting blades.

[0032] The boost blades have a special streamlined structure and layout, with a narrow inlet and a wide outlet between adjacent blades, and are in a rotating state when working. The function of the power duct 2 is to guide the wind flow as a power source to drive the impeller to rotate. The static boost impeller 3 consists of an outer shell and internal boost blades, and is in a stationary state when working.

[0033] When the wind flow boosting device of the fan group is working, the wind flow of one fan is connected to the inlet flange of the boosting device as the wind flow to be boosted, and the wind flow from the other fan is diverted to the inlet of each power air duct 2, and the blades on the outer periphery of the dynamic boosting impeller 6 are driven to rotate the dynamic boosting impeller 6. Because of the introduction of external kinetic energy, the air flow will be compressed behind the dynamic boosting blades; at the same time, due to the widening of the outlet between adjacent dynamic boosting blades, according to the Bernoulli principle, the air flow velocity will decrease and the pressure will further increase. Subsequently, the air flow compressed by the dynamic boosting impeller 6 enters the static boosting impeller 3. Similarly, due to the similar blade structure and arrangement on the static boosting impeller 3, the air flow pressure is further increased. The dynamic boosting impeller 6 and the static boosting impeller 3 together constitute a group of boosting units. When the boosting units are connected in series, the inner diameter of the air flow channel of the boosting unit is gradually expanded, which can also assist in increasing the air flow pressure. In this way, by connecting the boosting units in series and boosting the pressure step by step, a higher pressure air flow that meets the working requirements of the vortex tube can be obtained and flows out from the outlet flange.

[0034] The vortex tube turning device includes a baffle 9, a low temperature difference vortex tube 10, a spherical air outlet shell 11, a wind direction adjustment mechanism 12, a spherical guide cover 13 and a universal spherical pair 14. The baffle 9 is installed on the vortex tube. The function of the baffle 9 is to prevent the free exchange of airflow inside and outside the membrane structure building to ensure the normal pressure maintenance of the pressure-maintaining fan. The inner circle of the baffle 9 is fixed with a spherical air outlet shell 11, and the air outlet shell can adjust its wind direction through the wind direction adjustment mechanism 12. The interior of the spherical air outlet shell 11 is provided with a spherical guide cover 13, and the spherical guide cover 13 can exchange the cold and hot ends of the vortex tube. The spherical guide cover 13 and the spherical air outlet shell 11 are connected by a universal spherical pair 14. The interior of the spherical guide cover 13 is provided with a low temperature difference vortex tube 10, and the wind direction adjustment mechanism 12 is installed on the spherical air outlet shell 11.

[0035] The pipeline is arranged in a square through hole inside the wall with an area of ​​200000mm*200000mm and a height of 69000mm and is implemented through the following implementation steps;

[0036] Step 1: Open a 1000mm◇1000mm square through hole 2000mm from the ground in the wall to place the vortex tube and its turning device;

[0037] Step 2: Every four vortex tubes and their pipelines form a group, and a group of booster devices provide pressure gas source;

[0038] Step 3: Sixteen vortex tubes are arranged on each foundation wall, four at each corner and eight in the middle. Except for the pressure-maintaining fan side wall which is only arranged at the corner, the other three walls adopt a similar layout, with a total of 50 vortex tubes and 14 sets of wind flow boosting devices.

[0039] A temperature control system and method for a space of an air-supported membrane structure based on clustered vortex tubes, comprising the following steps:

[0040] S1: The outlet direction of the vortex tube is arranged perpendicular to the wall;

[0041] S2: When it is necessary to switch between cooling and heating, all vortex tubes can be turned 180° by the vortex tube turning mechanism.

[0042] In actual use, under the hot and extreme temperature conditions in summer, the vortex tube cannot be turned on until noon to cool down, but the vortex tube should be regarded as a constant temperature device and needs to be turned on for a long time during the day. A few hours before the hottest noon, the vortex tube should be activated to reduce the indoor temperature to a comfortable temperature for the human body.

[0043] refer to Figure 6 , 7 The implementation method of the air-supported membrane structure space temperature control system of the cluster vortex tubes first uses CFD technology, adopts the sun tracking algorithm and the mixed wall boundary condition, so as to computer simulate and emulate the temperature control technology and method of the air-supported membrane structure space temperature control system of the cluster vortex tubes. The vortex tube outlet is installed vertically and the wall is horizontally discharged; the vortex tube outlet is tilted downward by 45°; the vortex tube outlet is tilted upward by 45°; the vortex tube outlet on the opposite side wall is tilted upward by 45° on one side and downward by 45° on the other side; and the number of vortex tubes is increased or decreased. Each scheme simulates the temperature field for the hottest summer and the coldest winter conditions respectively.

[0044] The simulation results show that when the vortex tube is installed on the foundation wall 2m above the ground and the vortex tube outlet is arranged horizontally and perpendicular to the wall, the average temperature can reach the most comfortable temperature for the human body, 26°, regardless of winter or summer, and the temperature in most areas is also within the most comfortable temperature range for the human body.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control system in a space of an air-supported membrane structure based on clustered vortex tubes, characterized in that: It includes a wind flow boosting device of the fan unit, a vortex tube direction-changing device and pipelines installed on the wall; The wind flow boosting device of the fan unit is composed of multiple groups of modular boosting units, including wind flow inlet flange, power air duct, static boosting impeller, wind flow outlet flange, locking nut, dynamic boosting impeller, main shaft, bearing, wind flow inlet flange and wind flow outlet flange are installed at both ends of the shell of the boosting unit, and the power air duct is arranged on the shell body, the main shaft is arranged in the middle of the boosting unit, the bearing is installed at one end of the main shaft close to the wind flow inlet flange, and the locking nut is installed at one end close to the wind flow outlet flange, and the shaft body of the main shaft is sequentially installed with multiple groups of dynamic boosting impellers and static boosting impellers; The vortex tube turning device comprises a baffle, a low temperature difference vortex tube, a spherical air outlet shell, a wind direction adjustment mechanism, a spherical air guide cover and a universal spherical pair, wherein the baffle is installed on the vortex tube, the spherical air outlet shell is fixed to the inner ring of the baffle, the spherical air guide cover is arranged inside the spherical air outlet shell, the spherical air guide cover and the spherical air outlet shell are connected through a universal spherical pair, the low temperature difference vortex tube is installed inside the spherical air guide cover, and the wind direction adjustment mechanism is installed on the spherical air outlet shell; The pipeline is arranged in the square through hole inside the wall.

2. The air-supported membrane structure space temperature control system based on clustered vortex tubes according to claim 1 is characterized in that: The boosting units are connected in series via a main shaft.

3. The temperature control system and method for a space of an air-supported membrane structure based on clustered vortex tubes according to claim 1, characterized in that: The dynamic boost impeller is composed of driving blades at the periphery and boost blades at the core.

4. The air-supported membrane structure space temperature control system based on clustered vortex tubes according to claim 3 is characterized in that: The booster blades have a special streamlined structure and layout, with narrow inlets and wide outlets between adjacent blades.

5. The air-supported membrane structure space temperature control system based on clustered vortex tubes according to claim 1, characterized in that: The pipeline arrangement method The following steps are involved: Step 1: Open a square hole of suitable size in the wall; Step 2: Every four vortex tubes and their pipelines form a group, and a group of booster devices provide pressure gas source; Step 3: Arrange sixteen vortex tubes on each foundation wall, four at each corner and eight in the middle.

6. A method for regulating temperature in a space of an air-supported membrane structure based on clustered vortex tubes, characterized in that: The steps of arranging the temperature control system in the air-supported membrane structure space including the clustered vortex tubes described in claims 1-5 are as follows: S1: The outlet direction of the vortex tube is arranged perpendicular to the wall; S2: When it is necessary to switch between cooling and heating, all vortex tubes can be turned 180° by the vortex tube turning mechanism.

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