CN114618699B - Pulse gas jet device based on porous rotating disk with different axes of flow channel - Google Patents
Pulse gas jet device based on porous rotating disk with different axes of flow channel Download PDFInfo
- Publication number
- CN114618699B CN114618699B CN202210319571.6A CN202210319571A CN114618699B CN 114618699 B CN114618699 B CN 114618699B CN 202210319571 A CN202210319571 A CN 202210319571A CN 114618699 B CN114618699 B CN 114618699B
- Authority
- CN
- China
- Prior art keywords
- hole
- disc
- shaped
- flow channel
- flange plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
Abstract
The invention relates to a pulse gas jet device based on a porous rotating disk which is coaxial with a flow channel, wherein a generation cavity mechanism comprises a generation cavity, a disk and a first flange plate, a first through hole is formed in the center of the disk, a second through hole is formed in the center of the first flange plate, a nozzle is installed at the second through hole, and the central axes of the generation cavity, the first through hole, the second through hole and the nozzle are inosculated and sequentially communicated to form a flow channel for gas to pass through; the pulse air flow generator is characterized by further comprising a rotating mechanism, a waist-shaped through hole on a rotating disc in the rotating mechanism forms a flow passage access state or a non-coincident flow passage open-circuit state, the waist-shaped through hole and the first through hole form periodic opening and closing to generate pulse air flow, and the pulse air flow can be adjusted along with the coincidence area of the waist-shaped through hole and a valve port of the first through hole in the flow passage access state. The invention has simple structure, good uniformity of the generated air flow, high pulse intensity and peak value, and can realize large-range controllability of the excitation frequency and controllable duty ratio.
Description
Technical Field
The invention relates to the technical field of gas jet, in particular to a pulse gas jet device based on a porous rotating disk which is coaxial with a flow channel.
Background
The pulse gas jet has wide application in blowing operation, aircraft attitude control and experimental hydromechanics research. The existing pulse gas jet generating device generally comprises a motor-driven rotating mechanism, a solenoid valve control mechanism, a plasma exciter and the like. The gas pulse jet generated by the motor-driven rotating mechanism is generally affected by jet nonuniformity caused by internal disturbance of the cavity or non-coaxiality of the jet opening and the cavity. The electromagnetic valve has strict requirements on working media, power supply conditions and environmental conditions, is limited by the response time of the electromagnetic valve and a complex internal structure, the frequency or flow of pulse gas jet generated by the periodic opening and closing of the electromagnetic valve cannot reach the maximum value at the same time easily, and the pulse frequency of the generated jet is generally less than 100Hz. The plasma energy excitation method is difficult to realize high-frequency and large-flow pulse gas jet under the condition of low cost, the increase of the jet speed is accompanied with the reduction of saturation frequency, the adjustment range of the pulse working frequency is directly influenced, and an experimental device possibly has certain danger. In summary, the existing pulse gas jet device is difficult to satisfy the requirements of large jet flow, wide frequency range, good jet uniformity and low experimental cost at the same time.
Disclosure of Invention
The invention aims to provide a pulse gas jet device based on a porous rotating disk which is coaxial with a flow channel, the device has a simple internal structure, the generated gas flow has good uniformity, the pulse intensity is high, the peak value is high, and the controllability of the excitation frequency and the duty ratio can be realized.
In order to achieve the purpose, the invention adopts the following technical scheme: the gas generating device comprises a generating cavity, a disc and a first flange plate, wherein the generating cavity, the disc and the first flange plate are sequentially arranged and connected, one end, far away from the disc, of the generating cavity is an air inlet, the air inlet is communicated with a gas supply mechanism, one end, close to the disc, of the generating cavity is an air outlet, the second flange plate is hermetically connected with the disc, a circular first through hole is formed in the center of the disc, a circular second through hole is formed in the center of the first flange plate, a nozzle is installed at the position of the second through hole, the central axes of the generating cavity, the first through hole, the second through hole and the nozzle are matched, and the generating cavity, the first through hole, the second through hole and the nozzle are sequentially communicated to form a flow passage for gas to pass through;
the rotating mechanism further comprises a rotating disc fixed on the rotating shaft, a circular groove for accommodating the rotating disc is formed in the disc surface close to the first flange plate, a plurality of waist-shaped through holes are uniformly arranged on the disc surface of the rotating disc along the circumferential direction of the rotating disc at intervals, when the rotating disc rotates, the waist-shaped through holes form a flow passage state coincident with the first through holes or a flow passage open circuit state non-coincident with the first through holes, the waist-shaped through holes and the first through holes form periodic opening and closing to generate pulse airflow, and the size of the pulse airflow can be adjusted along with the size of the coincident area of the waist-shaped through holes and a valve port of the first through holes in the flow passage state.
The gas supply mechanism comprises a gas tank, the gas tank is provided with a pressure gauge, an outlet of the gas tank is communicated with a gas inlet of the generating cavity through a gas pipe, the gas pipe is sequentially provided with a gas valve and a pressure reducing valve along the gas flowing direction, the generating cavity is provided with a first threaded hole, and the digital display pressure gauge is in threaded connection with the first threaded hole.
The nozzle is arranged in the second through hole through a ball valve, the inner diameter of the ball valve is matched with the diameter of the first through hole, and the spray hole of the nozzle is of a reducing structure with a large air inlet end and a small air outlet end.
The second flange plate, the disc and the first flange plate are parallel to each other and are sequentially attached to each other, the diameters of the second flange plate, the disc and the first flange plate are identical, the second flange plate, the disc and the first flange plate are fastened and connected through bolts, an annular groove for placing an O-shaped sealing ring is formed in the end face, close to the disc, of the second flange plate, and an end cover for sealing the rotating shaft is arranged on the end face, far away from the disc, of the first flange plate; the circumference of second ring flange, disc and first ring flange be equipped with matched with and go up clamp and lower clamp, lower clamp and mounting panel be connected fixedly.
The motor be servo motor, the output shaft of motor passes through the shaft coupling and links to each other with the rotation axis, install the encoder on the output shaft of motor, the motor pass through motor support and be connected fixedly with the mounting panel.
The rotating disc is fixed on the rotating shaft through a flat key and a set screw, and a second threaded hole matched with the set screw and a key groove matched with the flat key are formed in the center of the rotating disc.
The circular groove is arranged at the position of the disc deviated from the center, the circular groove is a two-stage stepped groove, the rotating disc rotates in the disc, the disc and the rotating disc are matched through a concave-convex surface, and the radial gap between the rotating disc and the circular groove is 0.1mm.
The distance between the central arc line between the upper arc and the lower arc of the waist-shaped through hole and the center of the rotating disc is matched with the distance between the center of the circular disc and the center of the circular groove, and the radial width of the waist-shaped through hole is matched with the diameter of the first through hole.
The calculation formula of the number of the waist-shaped through holes is as follows:
m＝f max ×(60/n max )
wherein: m is the number of the waist-shaped through holes (if m is found to be a decimal number, the m is rounded upwards);
f max the maximum pulse excitation frequency required to be provided for the device;
n max the maximum rotation speed of the motor is selected.
The calculation formula of the included angle between the arc centers of the two sides of the waist-shaped through hole is as follows:
θ＝d×(360°/m)
wherein: theta is an included angle between the centers of the circular arcs on the two sides of the waist-shaped through hole;
d is the duty cycle;
m is the number of the waist-shaped through holes.
According to the technical scheme, the central axes of the generating cavity, the first through hole, the second through hole and the nozzle which form the gas flow channel are matched, so that the uniformity of the gas flow ejected by the whole device is good; meanwhile, the air flow horizontally enters along the direction of the air inlet and is horizontally sprayed out from the nozzle along the same direction, so that the problems of internal disturbance of the cavity, uneven air flow caused by the nozzle and the cavity are solved. The invention can also realize the controllable adjustment of the excitation frequency in a large range by replacing the motor and changing the number of the waist-shaped through holes; the duty ratio is changed between 0 and 1 by changing the number of the waist-shaped through holes and the hole pattern of the waist-shaped through holes.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic perspective view of a rotary mechanism and a generation chamber mechanism according to the present invention;
FIG. 4 is a first perspective view of the generating chamber mechanism and the rotating shaft of the present invention;
FIG. 5 is a schematic perspective view of the generating chamber mechanism and the rotating shaft according to the present invention;
FIG. 6 is an exploded view of the generation chamber mechanism and rotation mechanism of the present invention;
FIG. 7 is a schematic view of the internal structure of the generation chamber mechanism and the rotation mechanism of the present invention;
FIG. 8 is a first state view of the flow passage of the present invention in the open position;
FIG. 9 is a second view of the flow path of the present invention in the channel;
fig. 10 is a view showing the flow path of the present invention in an open state;
FIG. 11 is a first schematic view of a generating chamber according to the present invention;
FIG. 12 is a second schematic structural view of a generation chamber according to the present invention;
FIG. 13 is a first schematic structural view of a disk of the present invention;
FIG. 14 is a second structural view of the disc of the present invention;
FIG. 15 is a first structural view of the first flange of the present invention;
FIG. 16 is a second structural view of the first flange of the present invention;
FIG. 17 is a schematic view of a rotary disk according to the present invention;
FIG. 18 is a second schematic structural view of a rotary disk of the present invention;
fig. 19 is a front view of the rotating disk of the present invention.
The reference symbols in the above figures are: the generator comprises a generator cavity mechanism 1, a generator cavity 11, an air inlet 111, an air outlet 112, a second flange plate 113, a first threaded hole 114, a digital display pressure gauge 115, a circular groove 116, an O-shaped sealing ring 117, a disc 12, a first through hole 121, a circular groove 122, a first flange plate 13, a second through hole 131, an end cover 132, a rotating mechanism 2, a rotating shaft 21, a bearing 211, a motor 22, an encoder 221, a rotating disc 23, a waist-shaped through hole 231, a flat key 232, a set screw 233, a second threaded hole 234, a key groove 235, a nozzle 3, a ball valve 31, an air supply mechanism 4, an air tank 41, a pressure gauge 42, an air pipe 43, an air valve 44, a pressure reducing valve 45, a pipe joint 46, an upper clamp 51, a lower clamp 52, a support plate 53 and a motor support 54.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 7, 11, 12, 15, and 16, the pulse gas jet apparatus based on a porous rotating disk that is coaxial with a flow channel includes a generation cavity mechanism 1, where the generation cavity mechanism 1 includes a generation cavity 11, a disk 12, and a first flange 13 that are sequentially arranged and connected, one end of the generation cavity 11 away from the disk 12 is an air inlet 111 and the end is communicated with an air supply mechanism 4, one end of the generation cavity 11 close to the disk 12 is an air outlet 112 and the end is provided with a second flange 113 that is hermetically connected with the disk 12, and the second flange 113 and the generation cavity 11 are integrated; a circular first through hole 121 is formed in the center of the disc 12, a circular second through hole 131 is formed in the center of the first flange plate 13, the nozzle 3 is installed at the second through hole 131, the central axes of the generating cavity 11, the first through hole 121, the second through hole 131 and the nozzle 3 are matched, and the generating cavity 11, the first through hole 121, the second through hole 131 and the nozzle 3 are sequentially communicated to form a flow channel for gas to pass through;
the device also comprises a rotating mechanism 2, wherein the rotating mechanism 2 comprises a rotating shaft 21 which is arranged in a different way with the flow channel, one end of the rotating shaft 21 is connected with a motor 22, the other end of the rotating shaft 21 sequentially penetrates through a second flange plate 113, a disc 12 and a first flange plate 13, the rotating shaft 21 is fixed with the first flange plate 13 through a bearing 211, and the bearing 211 is a deep groove ball bearing; the rotating mechanism 2 further comprises a rotating disc 23 fixed on the rotating shaft 21, a circular groove 122 for accommodating the rotating disc 23 is formed in the disc surface of the disc 12 close to the first flange 13, a plurality of waist-shaped through holes 231 are uniformly arranged on the disc surface of the rotating disc 23 at intervals along the circumferential direction of the disc surface, when the rotating disc 23 rotates, the waist-shaped through holes 231 form a flow passage state coincident with the first through holes 121 or the waist-shaped through holes 231 form a flow passage open-circuit state non-coincident with the first through holes 121, the waist-shaped through holes 231 and the first through holes 121 form periodic opening and closing to generate pulse air flows, and the size of the pulse air flows can be adjusted along with the size of the coincidence area of the valve ports of the waist-shaped through holes 231 and the first through holes 121 in the flow passage state.
Further, the gas supply mechanism 4 comprises a gas tank 41, a pressure gauge 42 is arranged on the gas tank 41, an outlet of the gas tank 41 is communicated with a gas inlet 111 of the generation cavity 11 through a gas pipe 43, the gas pipe 43 is connected with the gas inlet 111 through a pipe joint 46, a gas valve 44 and a pressure reducing valve 45 are sequentially arranged on the gas pipe 43 along the gas flowing direction, a first threaded hole 114 is formed in the generation cavity 11, and a digital display pressure gauge 115 is in threaded connection with the first threaded hole 114.
Further, the nozzle 3 is installed in the second through hole 131 through the ball valve 31, the inner diameter of the ball valve 31 is matched with the diameter of the first through hole 121, and the spray hole of the nozzle 3 is in a reducing structure with a large air inlet end and a small air outlet end. Specifically, the nozzle hole of the nozzle 3 includes a cylindrical hole and a frustum hole, in which: the cylindrical hole is matched with the inner diameter of the ball valve, and the large-diameter end of the frustum hole is matched with the diameter of the cylindrical hole.
Further, the second flange 113, the disc 12 and the first flange 13 are parallel to each other and sequentially attached to each other, the diameters of the second flange 113, the disc 12 and the first flange 13 are identical and the three are fastened and connected by bolts, the end face of the second flange 113 close to the disc 12 is provided with an annular groove 116 for placing an O-ring 117, and the end face of the first flange 13 far away from the disc 12 is provided with an end cover 132 for closing the rotating shaft 21; the second flange plate 113, the disc 12 and the first flange plate 13 are provided with an upper clamp 51 and a lower clamp 52 which are matched with each other in the circumferential direction, and the lower clamp 52 is fixedly connected with the support plate 53.
Further, the motor 22 is a servo motor, an output shaft of the motor 22 is connected with the rotating shaft 21 through a coupling, an encoder 221 is installed on the output shaft of the motor 22, and the motor 22 is fixedly connected with the support plate 53 through a motor support 54.
Further, as shown in fig. 17 and 18, the rotary plate 23 is fixed to the rotary shaft 21 by a flat key 232 and a set screw 233, and a second screw hole 234 to be engaged with the set screw 233 and a key groove 235 to be engaged with the flat key 232 are opened in the center of the rotary plate 23.
Further, as shown in fig. 13 and 14, a circular groove 122 is provided at a position where the disc 12 is off-center, the circular groove 122 is a two-step stepped groove, the rotary disc 23 rotates within the disc 12, and the disc 12 and the rotary disc 23 are in concave-convex engagement for restricting radial movement of the rotary disc 23. The radial clearance between the rotating disc 23 and the circular groove 122 is 0.1mm.
Further, the distance between the central arc line between the upper and lower arcs of the kidney-shaped through hole 231 and the center of the rotating disc 23 is identical to the distance between the center of the disc 12 and the center of the circular groove 122, and the radial width of the kidney-shaped through hole 231 is identical to the diameter of the first through hole 121.
Further, the calculation formula of the number of the waist-shaped through holes 231 is as follows:
m＝f max ×(60/n max )
wherein: m is the number of the waist-shaped through holes (if m is found to be a decimal number, the m is rounded upwards);
f max the maximum pulse excitation frequency required to be provided for the device;
n max the maximum rotation speed of the motor is selected.
The calculation formula of the included angle between the arc centers of the two sides of the waist-shaped through hole 231 is as follows:
θ＝d×(360°/m)
wherein: theta is an included angle between the centers of the circular arcs at the two sides of the waist-shaped through hole;
d is the duty cycle;
m is the number of the waist-shaped through holes.
The pulse excitation frequency and the duty cycle are two more important performance parameters in a pulsed gas jet device. The pulse excitation frequency and the duty ratio of the invention are adjustable, and the specific explanation is as follows.
1. The pulse excitation frequency of the invention can be adjusted by adjusting the rotating speed of the motor and adjusting the number of the waist-shaped through holes. The pulse excitation frequency is calculated by the formula: f = m × (n/60). Wherein: f is the pulse excitation frequency in Hz; m is the number of the waist-shaped holes on the rotating disc; and n is the rotating speed of the motor and has the unit of r/min.
The first embodiment is as follows:
in the embodiment, a rotating disk with the number of waist-shaped through holes being 4 and a motor with the maximum rotating speed being 6000r/min are selected. The rotational speed of the motor is determined from the formula f = m x (n/60) using a known pulse excitation frequency without changing the rotary disk.
Such as: when the pulse excitation frequency required to be output is 400Hz, n =6000r/min can be obtained according to a formula, and the pulse excitation frequency of 400Hz can be obtained by adjusting the rotating speed of the motor to 6000 r/min.
Such as: when the pulse excitation frequency required to be output is 300Hz, n =4500r/min can be obtained according to a formula, and the pulse excitation frequency of 300Hz can be obtained by adjusting the rotating speed of the motor to 4500 r/min.
Example two:
in the embodiment, the motor with the maximum rotating speed of 6000r/min is selected. On the premise of not adjusting the rotating speed of the motor, different pulse excitation frequencies can be obtained according to the formula f = m x (n/60) by replacing the rotating disc with different numbers of waist-shaped through holes.
Such as: when the rotating speed of the motor is 6000r/min, the rotating disc with the number m of the waist-shaped through holes being 4 is replaced, and the output pulse excitation frequency f is 400Hz.
Such as: when the rotating speed of the motor is 6000r/min, the rotating disc with the number m of the kidney-shaped through holes being 6 is replaced, and the output pulse excitation frequency f is 600Hz.
Such as: when the rotating speed of the motor is 6000r/min, the rotating disc with the number m of the waist-shaped through holes being 8 is replaced, and the output pulse excitation frequency f is 800Hz.
2. The duty ratio of the invention can be adjusted by changing the included angle between the arc centers of the two sides of the waist-shaped through hole or changing the number of the waist-shaped through holes. The duty cycle is calculated as d = θ/(360 °/m), where: theta is an included angle between the centers of the circular arcs at the two sides of the waist-shaped through hole, as shown in fig. 19; 360 degrees/m is an included angle between two adjacent waist-shaped through holes; m is the number of the waist-shaped through holes.
Example three:
keeping the number of the waist-shaped through holes unchanged, and adjusting the duty ratio by changing the value theta.
Such as: and selecting a rotating disk with the number of the waist-shaped through holes of 4 and the theta of 22.5 degrees, wherein the duty ratio d =0.25.
Such as: and selecting a rotating disk with the number of the waist-shaped through holes of 4 and the theta of 36 degrees, wherein the duty ratio d =0.4 at the moment.
Such as: and selecting a rotating disk with the number of the waist-shaped through holes of 4 and the theta of 45 degrees, wherein the duty ratio d =0.5 at the moment.
Example four:
keeping the value of theta unchanged, and adjusting the duty ratio by changing the number of the waist-shaped through holes.
Such as: and selecting a rotating disk with theta of 22.5 degrees and the number of the waist-shaped through holes of 6, wherein the duty ratio d =0.375 at the moment.
Such as: and selecting a rotating disk with the theta of 22.5 degrees and the number of the waist-shaped through holes of 8, wherein the duty ratio d =0.5.
The working principle and the working process of the invention are as follows:
before the test, the air valve is closed, the position of the rotating disc is adjusted, the flow channel is completely closed, as shown in fig. 10, the position of the motor shaft at the moment is set to be the original position, the motor shaft returns to the original position after the test is finished conveniently, and the air flow channel is completely closed before the test starts each time.
When the experiment is started, the pressure of the pressure reducing valve is adjusted to be 0.2MPa, the air valve is opened, the air cylinder continuously fills high-pressure air into the generating cavity through the air inlet, when the numerical value of the digital display pressure gauge is 0.2MPa, the motor is started, the motor drives the rotating shaft to rotate, so that the waist-shaped through hole on the rotating disc is driven to rotate, the ball valve is opened after 2-3 seconds, as shown in figures 8 and 9, when the superposed area of the valve ports of the waist-shaped through hole and the first through hole reaches the maximum value, the flow channel is completely opened, the high-pressure air with the pressure intensity of 0.2MPa is sprayed out of the nozzle while being fed from the air inlet, and in the process that the superposed area of the waist-shaped through hole and the first through hole is reduced and gradually reaches zero, the high-pressure air enters the nozzle and is blocked, and the high-pressure air with the pressure intensity of less than 0.2MPa is sprayed out of the nozzle, so that the pressure intensity in the flow channel is reduced. The waist-shaped through holes periodically pass through the first through holes, and pulse airflow is generated by means of periodic change of the flow cross-sectional area of the airflow channel, so that high-pressure gas is horizontally sprayed out of the nozzle.
And after the work is finished, the air valve is closed, and an instruction is input to enable the motor to return to the original position, so that the test is finished.
The invention has the beneficial effects that:
(1) The central axes of the generating cavity, the first through hole, the second through hole and the nozzle which form the gas flow channel are matched, so that the uniformity of the gas flow ejected by the whole device is good; meanwhile, the air flow horizontally enters along the direction of the air inlet and is horizontally sprayed out from the nozzle along the same direction, so that the problems of internal disturbance of the cavity, uneven air flow caused by the nozzle and the cavity are solved. In addition, since there are no redundant structural components inside the cavity, the volume of the cavity can be designed to be very small, for example, the internal diameter of the cavity is 20mm and the depth is 25mm in the configuration of the present invention.
(2) The generating cavity has smaller volume, and the gas in the cavity can be quickly discharged or filled in the short time of the passage or the open circuit of the flow channel, so that the static pressure in the generating cavity before and after the jet flow is quickly reduced/recovered in one pulse cycle, the amplitude of the generated pulse pressure is large, more ideal pulse pressure waveform can be generated, and the excitation effect is more excellent.
(3) The excitation frequency of the invention is adjustable. The motor drives the rotating disc to rotate, high-pressure gas starts to enter the nozzle at the moment when the waist-shaped through hole in the rotating disc and the threshold opening of the first through hole start to coincide, and the moment when coincidence starts next time is an excitation period. The rotating speed of the motor is controlled, so that the excitation frequency of the pulse gas jet is controlled, and the calculation formula of the pulse excitation frequency is f = m x (n/60), wherein m is the number of the waist-shaped through holes in the rotating disc, and n is the rotating speed of the motor and has the unit of r/min. Calculated by the maximum rotating speed 6000r/min of the motor, if a rotating disk with the circumferential number m =10 is selected, the invention can realize the pulse excitation frequency in the range of 0-1000 Hz.
(4) The duty ratio of the invention is adjustable, the duty ratio in a pulse cycle is d = theta/(360 DEG/m), theta is the included angle between the arc centers at two sides of the waist-shaped through hole; 360 degrees/m is an included angle between two adjacent waist-shaped through holes, wherein m is the number of the waist-shaped through holes. The size of theta is changed by replacing the rotating disc with different sizes of the waist-shaped through holes, so that the duty ratio is changed, and the duty ratio ranges from 0 to 1.
(5) The invention has simple internal structure, simple processing technology of main parts, strong interchangeability and quick disassembly or replacement; the modularized assembly process of the invention facilitates installation and maintenance.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. The utility model provides a pulse gas fluidic device based on with the porous rotating disc of runner coaxial which characterized in that: the gas generation device comprises a generation cavity mechanism (1), wherein the generation cavity mechanism (1) comprises a generation cavity (11), a disc (12) and a first flange plate (13) which are sequentially arranged and connected, one end, far away from the disc (12), of the generation cavity (11) is an air inlet (111), the end of the generation cavity (11) is communicated with an air supply mechanism (4), one end, close to the disc (12), of the generation cavity (11) is an air outlet (112), the end of the generation cavity is provided with a second flange plate (113) which is hermetically connected with the disc (12), a circular first through hole (121) is formed in the center of the disc (12), a circular second through hole (131) is formed in the center of the first flange plate (13), a nozzle (3) is installed in the second through hole (131), the central axes of the generation cavity (11), the first through hole (121), the second through hole (131) and the nozzle (3) are matched, and the generation cavity (11), the first through hole (121), the second through hole (131) and the nozzle (3) are sequentially communicated to form a flow channel for gas to pass through;
the rotating mechanism (2) comprises a rotating shaft (21) which is arranged in a way of being different from the flow channel, one end of the rotating shaft (21) is connected with a motor (22), the other end of the rotating shaft (21) sequentially penetrates through a second flange plate (113), a disc (12) and a first flange plate (13), the rotating shaft (21) is fixed with the first flange plate (13) through a bearing (211), the rotating mechanism (2) further comprises a rotating disc (23) which is fixed on the rotating shaft (21), a circular groove (122) for accommodating the rotating disc (23) is formed in the disc surface of the disc (12) close to the first flange plate (13), a plurality of kidney-shaped through holes (231) are uniformly arranged on the disc surface of the rotating disc (23) at intervals along the circumferential direction of the disc surface, when the rotating disc (23) rotates, the kidney-shaped through holes (231) form a flow channel access state which is overlapped with the first through holes (121) or the kidney-shaped through holes (231) form a flow channel open-close state which is not overlapped with the first through holes (121), and the kidney-shaped through holes (231) form an open-close flow channel open-close state which can generate a small pulse air flow channel with the first through holes (121) and the adjustable area.
2. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: air feed mechanism (4) include gas pitcher (41), gas pitcher (41) on be equipped with manometer (42), the export of gas pitcher (41) passes through trachea (43) and air inlet (111) the intercommunication of taking place cavity (11), trachea (43) go up and be equipped with pneumatic valve (44) and relief pressure valve (45) along gas flow direction in proper order, take place cavity (11) on seted up first screw hole (114), digital display manometer (115) and first screw hole (114) threaded connection.
3. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the nozzle (3) is arranged in the second through hole (131) through a ball valve (31), the inner diameter of the ball valve (31) is matched with the diameter of the first through hole (121), and a spray hole of the nozzle (3) is of a reducing structure with a large air inlet end and a small air outlet end.
4. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the second flange plate (113), the disc (12) and the first flange plate (13) are parallel to each other and are sequentially attached to each other, the diameters of the second flange plate (113), the disc (12) and the first flange plate (13) are identical, the second flange plate, the disc (12) and the first flange plate (13) are fastened and connected through bolts, an annular groove (116) for placing an O-shaped sealing ring (117) is formed in the end face, close to the disc (12), of the second flange plate (113), and an end cover (132) for sealing the rotating shaft (21) is arranged on the end face, far away from the disc (12), of the first flange plate (13); the circumference of second ring flange (113), disc (12) and first ring flange (13) be equipped with matched with last clamp (51) and lower clamp (52), lower clamp (52) be connected fixedly with mounting panel (53).
5. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the motor (22) be servo motor, the output shaft of motor (22) passes through the shaft coupling and links to each other with rotation axis (21), install encoder (221) on the output shaft of motor (22), motor (22) pass through motor support (54) and be connected fixedly with mounting panel (53).
6. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the rotary disk (23) is fixed on the rotary shaft (21) through a flat key (232) and a set screw (233), and a second threaded hole (234) matched with the set screw (233) and a key groove (235) matched with the flat key (232) are formed in the center of the rotary disk (23).
7. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: circular recess (122) set up the position at disc (12) off-centre, circular recess (122) be two-stage ladder groove, rotary disk (23) are at disc (12) internal rotation, be concave convex surface cooperation between disc (12) and rotary disk (23), rotary disk (23) and circular recess (122) radial clearance between be 0.1mm.
8. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the distance between the central arc line between the upper arc and the lower arc of the waist-shaped through hole (231) and the center of the rotating disc (23) is matched with the distance between the center of the disc (12) and the center of the circular groove (122), and the radial width of the waist-shaped through hole (231) is matched with the diameter of the first through hole (121).
9. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the calculation formula of the number of the waist-shaped through holes (231) is as follows:
m＝f max ×(60/n max )
wherein: m is the number of the waist-shaped through holes (if m is found to be a decimal number, the m is rounded upwards);
f max the maximum pulse excitation frequency required to be provided for the device;
n max the maximum rotation speed of the motor is selected.
10. A pulsed gas-jet device based on a porous rotating disk that is coaxial with the flow channel, according to claim 1, characterized in that: the calculation formula of the included angle between the arc centers of the two sides of the waist-shaped through hole (231) is as follows:
θ＝d×(360°/m)
wherein: theta is an included angle between the centers of the circular arcs on the two sides of the waist-shaped through hole;
d is the duty cycle;
m is the number of the waist-shaped through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210319571.6A CN114618699B (en) | 2022-03-29 | 2022-03-29 | Pulse gas jet device based on porous rotating disk with different axes of flow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210319571.6A CN114618699B (en) | 2022-03-29 | 2022-03-29 | Pulse gas jet device based on porous rotating disk with different axes of flow channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114618699A CN114618699A (en) | 2022-06-14 |
| CN114618699B true CN114618699B (en) | 2023-01-06 |
Family
ID=81903235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210319571.6A Active CN114618699B (en) | 2022-03-29 | 2022-03-29 | Pulse gas jet device based on porous rotating disk with different axes of flow channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114618699B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10502131A (en) * | 1995-03-29 | 1998-02-24 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Perforated disk, especially perforated disk for injection valve and method for producing perforated disk |
| CN101862716B (en) * | 2009-05-14 | 2012-03-28 | 张祖祺 | Rotary nozzle of reactive rotor |
| KR100990927B1 (en) * | 2010-05-13 | 2010-11-01 | 주식회사 신연에너지 | Disc type fluid heating device |
| CN203291977U (en) * | 2013-05-15 | 2013-11-20 | 珠海三威注塑模具有限公司 | Hand-held shower head with multiple water flow types |
| CN204974244U (en) * | 2015-08-24 | 2016-01-20 | 厦门水大卫浴洁具有限公司 | Developments go out water shower nozzle |
| CN207694001U (en) * | 2017-06-26 | 2018-08-07 | 河北煜杰医疗器械有限公司 | A kind of Medical pulse flusher |
| CN108403046A (en) * | 2018-04-23 | 2018-08-17 | 浙江欧琳生活健康科技有限公司 | A kind of dish-washing machine pulsed sprinkling equipment |
| CN108567368B (en) * | 2018-06-28 | 2024-04-09 | 江苏爱厚朴医疗器械有限公司 | Disposable pulse flusher |
| CN109701761B (en) * | 2019-01-16 | 2020-07-24 | 武汉大学 | Self-excitation blocking type pulse jet flow generation method |
| CN111375499B (en) * | 2020-04-21 | 2021-01-01 | 合肥工业大学 | Pulse gas jet generating device with adjustable excitation frequency and duty ratio |
-
2022
- 2022-03-29 CN CN202210319571.6A patent/CN114618699B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114618699A (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111375499B (en) | Pulse gas jet generating device with adjustable excitation frequency and duty ratio | |
| CN109372656B (en) | Rocket engine injection panel with adjustable nozzle liquid mist distribution and design method | |
| CN114618699B (en) | Pulse gas jet device based on porous rotating disk with different axes of flow channel | |
| CN110242480B (en) | Pipeline generator and electrically operated valve thereof | |
| CN108115462B (en) | Programmable micro-lubricating injection angle phase adjusting device and using method thereof | |
| CN111744689A (en) | Environmental protection machinery is with abundant spray set | |
| CN103752436B (en) | The rotatable pneumatic atomization system of shower nozzle | |
| CN108655523B (en) | A kind of device improving high current arc discharging milling machining accuracy | |
| CN101453821B (en) | Wide range plasma density regulating apparatus | |
| CN102784059B (en) | Spray gun device for coating machine | |
| CN111272432A (en) | Air inlet pulsation back pressure generation test device based on cam and jet flow mechanism | |
| CN203768406U (en) | Combined train wheel quenching and cooling device | |
| CN106695034A (en) | Film hole processing device for aviation turbine blade capable of removing remelting layer | |
| CN210187481U (en) | High-energy plasma spraying equipment | |
| CN214234547U (en) | Atomizing and spraying device matched with mixing head in spray-coating type plate foaming machine | |
| CN209892374U (en) | Low-pressure-difference pipeline generator | |
| CN210815793U (en) | A shower nozzle mechanism for spraying equipment | |
| CN211801734U (en) | Electric spray gun body capable of adjusting atomization air quantity | |
| CN219795340U (en) | Throttling type nozzle device for steam turbine | |
| CN212596496U (en) | Space universal self-rotating ejector | |
| CN102553746A (en) | Gas and liquid mixing nozzle structure and manufacturing method thereof | |
| CN217272211U (en) | Integrated adjustable nozzle regulating valve | |
| CN219954283U (en) | Liquid valve installation mechanism | |
| CN218914917U (en) | Air-fuel ratio adjusting burner | |
| CN217619435U (en) | Water supply structure for precision part machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |