Gas Pulser

Abstract

The present invention provides a gas pulser, including a motor and a control system, a support frame, a housing, an air inlet end cover, an air inlet, an air outlet end cover and an air outlet, characterized in that it also includes: an elastic connection system; and a rotor pair, which includes a rotor with an exhaust hole and a solid lubricating rotor sleeve also with an exhaust hole, and has a gas stop switch function, the solid lubricating rotor sleeve is fixedly and statically installed in the housing, the rotor is driven to rotate by the motor in the solid lubricating rotor sleeve through the elastic connection system, the high-pressure gas pulse frequency is controlled by controlling the rotation speed of the rotor, and the intensity of the gas pulse is controlled by setting the pressure and flow rate of the inflowing gas. The present invention can successfully circumvent the bonding failure problem of high-speed large-caliber bimetallic solid lubricating bearings and effectively reduce the wear failure problem, can effectively reduce the heat generation of bimetallic oil-free bearings, can make the high-pressure gas jet generate strong intermittent pulses to obtain frequency-adjustable strong sound waves, and can be used for but not limited to strong sound wave rain enhancement, fog removal, dust removal and other fields.

Description

Technical Field

[0001] The invention relates to a gas pulser, in particular to a gas pulser applied in the field of strong sound waves. Background Art

[0002] In the prior art, gas pulsers (gas pulse generators) have a wide range of applications and people have conducted a lot of research. For example, a method of obtaining gas pulses by high-speed control of a high-pressure gas source switch by an electromagnetic valve has been proposed, and a scheme of a mechanical rotary pulse gas generator has also been proposed.

[0003] Regarding the method of obtaining gas pulses through solenoid valves, it is generally believed that it has disadvantages such as unreliable sealing and leakage, limited frequency and narrow application range of high-frequency switching of solenoid valves, short life, and poor working reliability.

[0004] Regarding the mechanical rotary pulse gas generator, generally speaking, the structure of the prior art is relatively complex.

[0005] References: Patent documents CN107402194A, CN102966643A

[0006] In the prior art, the inventors noticed that there are solid inlaid lubricating bearings, but all of them do not have the high-pressure gas pulse switch function; there are gas pulse switchers, but none of them can simultaneously have the bearing function of excellent sealing performance. The inventors studied the application of bimetallic solid lubricating bearings in gas pulsers.

[0007] When the gas pulse generator emits high-pressure pulse gas, the pulse generator rotor is in an asymmetric stress state. The high-pressure gas of dozens of times the standard atmospheric pressure causes the bearing to bear a large radial force, which will also cause excessive wear of the sliding bearing. When the bearing sliding speed level is high and the radial load is also large, the PV value that controls the heat generation of the bearing is also at a high level, and the bearing is very prone to overheating and bonding problems. That is, the application of bimetallic solid lubrication bearings in gas pulsers faces both wear failure and bonding failure problems.

[0008] Moreover, in the field of strong sound wave application technology, especially strong sound rainfall enhancement technology, a gas pulse generator with simple structure, reliable and safe performance, and the ability to quickly generate strong continuous gas pulses is needed. Summary of the invention

[0009] The present invention is proposed in view of the above problems, and its purpose is to provide a gas pulser which, through ingenious design, can successfully avoid the bonding failure problem of high-speed large-diameter bimetallic solid lubrication bearings and effectively reduce the wear failure problem.

[0010] Another object of the present invention is to provide a gas pulser which can effectively reduce the heat generated by the bimetallic oil-free bearing.

[0011] The present invention also aims to provide a gas pulser which can provide strong sound waves with strong gas pulse intensity and strong intermittent pulses.

[0012] In order to achieve the above-mentioned purpose, a gas pulser according to the present invention includes a motor and a control system, a support frame, a shell, an air inlet end cover, an air inlet, an air outlet end cover and an air outlet, and is characterized in that it also includes: an elastic connection system; and a rotor pair, which includes a rotor with an exhaust hole and a solid lubricating rotor sleeve also with an exhaust hole, and has a gas stop switch function. The solid lubricating rotor sleeve is fixedly and statically installed in the shell, and the rotor is driven to rotate in the solid lubricating rotor sleeve by the motor through the elastic connection system. The high-pressure gas pulse frequency is controlled by controlling the rotation speed of the rotor, and the intensity of the gas pulse is controlled by setting the pressure and flow rate of the inflowing gas.

[0013] According to the gas pulser of the present invention, preferably, the rotor adopts a multi-action working mode, that is, a plurality of exhaust holes are opened in one circle of the rotor, so that a plurality of gas pulses are generated during one rotation of the rotor.

[0014] According to the gas pulser of the present invention, preferably, the solid lubrication rotor sleeve adopts a multi-channel parallel working mode, that is, a plurality of exhaust holes are opened on the solid lubrication rotor sleeve, one of the exhaust holes is installed opposite to the air outlet, and the distribution phase of the plurality of exhaust holes on the solid lubrication rotor sleeve along the circumferential direction is the same as the distribution phase of the plurality of exhaust holes on the rotor, so that when the rotor is rotating, a plurality of pairs of exhaust holes on the rotor and the solid lubrication rotor sleeve are opened or closed at the same time, thereby realizing multi-channel parallel operation and increasing the gas pulse intensity. After the gas is discharged from the plurality of exhaust holes of the solid lubrication rotor sleeve, it passes through the air channel between the solid lubrication rotor sleeve and the shell, and is collected in parallel to the air outlet, and is ejected from the air outlet to form a pulse jet.

[0015] According to the gas pulser of the present invention, preferably, a one-way thrust ball bearing is installed between the shaft end of the rotor and the housing, so as to enable the rotor to generate a lower resistance torque while being subjected to high-pressure gas internally and retaining only a very small gap between the rotor and the solid-lubricating rotor sleeve externally.

[0016] According to the gas pulser of the present invention, preferably, the shaft ring of the one-way thrust ball bearing and the shaft end of the rotor adopt an interference fit, and the seat ring of the one-way thrust ball bearing and the housing adopt a clearance fit.

[0017] According to the gas pulser of the present invention, preferably, the connection between the one-way thrust ball bearing and the housing and the rotor shaft is such that the shaft ring and the seat ring of the one-way thrust ball bearing can be automatically aligned through balls, ensuring that the bearing is not subjected to radial forces.

[0018] According to the gas pulser of the present invention, preferably, the multiple exhaust holes opened on the rotor and the solid-lubricating rotor sleeve are all square holes, the square holes are evenly distributed along the circumferential direction, the long sides of the square holes are along the axial direction of the rotor and the solid-lubricating rotor sleeve, the lengths of the square holes on the rotor and the solid-lubricating rotor sleeve are equal or unequal, the short sides of the square holes are along the circumferential direction of the rotor and the solid-lubricating rotor sleeve, the length of the short side on the rotor is smaller than the length of the short side on the solid-lubricating rotor sleeve, and the reasonable selection of the short side length determines the time ratio of the high-pressure gas exhaust opening process and the closing process.

[0019] According to the gas pulser of the present invention, preferably, the time ratio of the high-pressure gas exhaust opening process and the closing process is greater than or equal to 1.

[0020] According to the gas pulser of the present invention, preferably, a lubricating oil channel is provided on the housing, and the opening of the lubricating oil channel is located directly above the gas pulser housing, so that the one-way thrust ball bearing installed between the rotor shaft end and the housing can operate smoothly for a long time.

[0021] According to the gas pulser of the present invention, preferably, the elastic connection system comprises:

[0022] The torque is transmitted between the motor shaft and the rotor through the motor shaft coupling sleeve and the rotor connecting plate, and a cross elastic connection is adopted.

[0023] The connecting plate is integrally embedded in the concave groove of the connecting end of the rotor, and the end of the motor shaft sleeve is embedded in the inner hole of the connecting plate. A large clearance fit is adopted in a pair of vertical directions, and a small clearance fit is adopted in another pair of vertical directions to realize a cross elastic connection.

[0024] The four inner corners of the connecting plate are chamfered to release stress and increase the fatigue life of the connecting plate.

[0025] The connecting plate material is 65Mn spring steel, and the thickness range of the connecting plate is 6 to 8 mm.

[0026] According to the gas pulser described in the present invention, preferably, the motor shaft coupling sleeve adopts an integral molding design, an interference fit is adopted between the coupling sleeve and the flat key, and a clearance fit is adopted between the flat key and the motor shaft. When the motor shaft coupling sleeve is machined, a U-shaped groove is first milled out with a milling cutter, and then the keyway is pulled out with a broach. The motor shaft coupling sleeve is not designed as a blind hole. If it must be designed as a blind hole, the sleeve can be cut off from the middle and designed into two parts, and the two parts are pressed together by interference fit.

[0027] Technical effect:

[0028] According to the gas pulser of the present invention, since a rotor pair consisting of a rotor with exhaust holes and a solid lubricating rotor sleeve also with exhaust holes is adopted, the rotor adopts a multi-action working mode, and the solid lubricating rotor sleeve adopts a multi-channel parallel working mode, the structure of the present invention has both a bearing function with excellent sealing performance and a high-pressure gas pulse switch function, and can successfully avoid the gluing failure problem of high-speed and large-caliber bimetallic solid lubricating bearings and effectively reduce the wear failure problem, and can obtain the technical effect of effectively reducing the heat generation of bimetallic oil-free bearings, enabling the high-pressure gas jet to generate strong intermittent pulses, causing strong oscillations in the air near the pulser outlet, thereby causing strong sound waves with adjustable frequency, and can be used for but not limited to the fields of strong sound wave rainmaking, fog elimination, dust removal, etc.

[0029] The above and / or other aspects of the present invention will become clear and more easily understood from the following description of the embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the structure of the gas pulser according to the present invention.

[0031] Figure 2 It is a schematic diagram for explaining the multi-function design concept according to the present invention.

[0032] Figure 3 It is a schematic diagram for explaining the concept of multi-channel parallel design according to the present invention.

[0033] Figure 4 A cross-sectional schematic diagram showing a four-action, four-channel parallel structure of a gas pulser according to an embodiment of the present invention.

[0034] Figure 5 A schematic diagram of the cross elastic connection structure according to the present invention is shown.

[0035] Figure 6 A schematic diagram of the motor shaft coupling sleeve structure according to the present invention is shown.

[0036] Figure 7 A diagram showing a design example of a gas pulser according to the present invention. DETAILED DESCRIPTION

[0037] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, but the scope of the present invention is not limited to the specific embodiments described.

[0038] Figure 1 Schematic diagram of the structure of the gas pulser according to the present invention. Figure 1As shown, the structure of the gas pulser of the present invention includes: a motor assembly 1; a fastening bolt 2; a housing fastening bolt 3; a bracket 4; a rotor connecting plate 5; a rotor assembly 6; an oil-resistant paper pad 7 for the air inlet end cover; an air inlet end cover 8; a housing assembly 9; an oil-resistant paper pad 10 for the air outlet end cover; an air outlet end cover 11, etc.

[0039] The motor assembly 1 may include a DC servo motor for driving the rotor in the housing of the gas pulse generating part of the gas pulser to rotate. The housing fastening bolts 3 are used to fasten the housing of the gas pulse generating part of the gas pulser to the bracket (or support frame) 4. The bracket (or support frame) 4 is used to firmly support the motor assembly 1 and the gas pulse generating part of the gas pulser. The rotor connecting plate 5 is used to transmit torque between the motor shaft of the motor assembly 1 and the rotor in the housing of the gas pulse generating part of the gas pulser by cooperating with the motor shaft coupling sleeve. The rotor assembly 6 includes a rotor pair, which is composed of a rotor with a vent and a solid lubricating rotor sleeve also with a vent, and is located inside the housing of the gas pulse generating part of the gas pulser.

[0040] Figure 7 A design example diagram of a gas pulser according to the present invention is shown. The gas pulser includes an inlet end cover, an inlet port, an outlet end cover, an outlet port, a housing, a support frame, a DC servo motor, and other parts. In this specification, the inlet end cover, the inlet port, the outlet end cover, the outlet port, the housing, and the components inside the housing are assumed to be the gas pulse generating part of the gas pulser.

[0041] refer to Figure 1 and Figure 7 The working principle of the gas pulser of the present invention is as follows: continuous high-pressure gas is blown in from the air inlet of the gas pulser, and the constant-pressure continuous compressed air is driven by a motor to rotate a rotor with air holes and to regularly open and close the air outlet holes on a rotor sleeve with air holes in a stationary state, thereby forming a pulse jet. When the openings of the gas pulser rotor overlap with the openings of the rotor sleeve, the high-pressure gas passes through the rotor pair from the inside of the gas pulser to form a pulse jet; when the openings of the gas pulser rotor are misaligned with the openings of the rotor sleeve, the high-pressure gas is confined inside the gas pulser to form a jet discontinuity; the jet and discontinuity repeat to form a gas pulse jet. The gas pulse is ejected from the outlet of the gas pulser.

[0042] The gas pulser according to the present invention includes a pulser rotor pair, an elastic connection system, a motor and a control system (not shown in the figure), and its pulse generation principle is based on a pair of pulser rotor pairs with a gas stop switch function, and the rotor pair is composed of a rotor with a vent and a solid lubricating rotor sleeve also with a vent. According to the present invention, the high-pressure gas pulse frequency can be controlled by controlling the rotation speed of the gas pulser rotor; the intensity of the gas pulse can be controlled by setting the pressure and flow rate of the gas flowing through the pulser. The gas pulser can cause the high-pressure gas jet to produce strong intermittent pulses, causing strong oscillations in the air near the pulser outlet, thereby causing strong sound waves.

[0043] According to the gas pulser of the present invention, the pulser rotor adopts a multi-action working mode. Figure 2 A schematic diagram is shown for explaining the multi-function design concept according to the present invention. As a preferred embodiment, Figure 2 In the figure, three air vents are opened around the rotor, so that when the rotor rotates one circle in the direction of the rotating arrow in the shell, three gas pulses are ejected in the direction of the airflow in the figure. Compared with the single-acting design with only one air vent opened around the rotor, the technical effect of this multi-acting design is: the linear speed of the large-diameter rotor is reduced at a certain pulse frequency, that is, when a gas pulse with a certain pulse frequency is obtained, the rotor only needs to work at a lower speed level, thereby effectively reducing the heat generated by the bimetallic oil-free bearing. Usually, when the gas pulse frequency is mHz, the rotor operating speed is m / n*60rpm, and n can be designed to be 2, 3, 4, etc. In this example Figure 2 In the example, n is designed to be 3.

[0044] According to the gas pulser of the present invention, the solid lubrication rotor sleeve of the pulser adopts a multi-channel parallel working mode. Figure 3 FIG. 2 is a schematic diagram for explaining the concept of multi-channel parallel design according to the present invention. Figure 3 As shown, the solid lubricating rotor sleeve is fixedly and statically installed in the housing, and the rotor rotates in the rotor sleeve according to the rotor rotation direction shown in the figure, and only a very small gap is retained between the rotor and the solid lubricating rotor sleeve, and there is an air passage between the rotor sleeve and the housing. As a preferred embodiment, Figure 3In the invention, three exhaust ports are provided on the rotor sleeve, and three exhaust ports are provided on the rotor. The distribution phase of the three exhaust ports on the rotor sleeve along the circumferential direction is the same as that of the three exhaust ports on the rotor. The rotor sleeve is fixedly and statically installed in the shell, and one exhaust port on it must be installed directly opposite to the gas pulser outlet. When the rotor rotates in the rotor sleeve, the three pairs of exhaust ports on the rotor and the rotor sleeve will be opened or closed at the same time. After the gas is discharged from the three exhaust ports of the rotor sleeve, it passes through the air channel between the rotor sleeve and the shell, and is collected in parallel to the pulser outlet, and is ejected from the outlet along the air flow direction to form a pulse jet. The technical effect of this multi-channel parallel structure design is that the rotor diameter can be reduced under the same pulse airflow intensity. That is to say, when the rotor is rotating, n pairs of exhaust ports on the rotor and the rotor sleeve are opened or closed at the same time, realizing multi-channel parallel operation, thereby increasing the gas pulse intensity. After the gas is discharged from the n exhaust ports of the rotor sleeve, it passes through the air channel between the rotor sleeve and the shell, and is collected in parallel to the pulser outlet, and is ejected from the outlet to form a pulse jet. According to the present invention, n can be designed to be 2, 3, 4, etc. Figure 3 In the example, n is designed to be 3.

[0045] Figure 4 FIG. 1 shows a specific embodiment of the gas pulse generator according to the present invention, which is a cross-sectional schematic diagram of the gas pulse generating portion of the gas pulse generator along the radial direction, and adopts a four-action, four-channel parallel structure. Figure 4 As shown, there are 4 exhaust holes on the rotor sleeve and 4 exhaust holes on the rotor sleeve. The distribution phase of the 4 exhaust holes on the rotor sleeve along the circumferential direction is the same as that of the 4 exhaust holes on the rotor. The rotor rotates around the rotation center of the rotor in the direction of the rotating arrow in the solid lubricating rotor sleeve driven by the motor. Only a very small gap is retained between the rotor and the solid lubricating rotor sleeve. The rotor sleeve is fixed in a stationary manner in the shell of the gas pulser. One exhaust hole of the rotor sleeve is installed facing the gas outlet of the gas pulser, and there is an airway between the rotor sleeve and the shell. When the rotor rotates in the rotor sleeve, the exhaust holes on the 4 pairs of rotors and rotor sleeves will be opened or closed at the same time. After the gas is discharged from the 4 exhaust holes of the rotor sleeve, it passes through the airway between the rotor sleeve and the shell, and is collected in parallel to the gas outlet of the gas pulser, and is ejected from the outlet to form a pulse jet.

[0046] According to the present invention, the rotor of the gas pulser and the solid lubricant rotor sleeve are both provided with n exhaust holes (openings), where n is 2, 3, 4, etc. According to the present invention, preferably, the n exhaust holes (openings) should all be designed as square holes, and the square holes are evenly distributed along the circumference. This is because the inventors have found that square holes are the most efficient opening method for the exhaust valve.

[0047] According to the present invention, the long side of the square hole is along the axial direction of the rotor and the rotor sleeve. The lengths of the square holes on the rotor and the rotor sleeve are equal or unequal (if unequal, the exhaust efficiency will be reduced). The longer the length, the better. The longer the length, the faster the exhaust valve opens and closes, and the stronger the discontinuity of the airflow. The length limit is limited by the strength and rigidity of the rotor and the rotor sleeve. The short side of the square hole is along the circumference of the rotor and the rotor sleeve. Preferably, the length of the short side on the rotor is shorter than the length of the short side on the rotor sleeve. Reasonable selection of the length of the short side determines the time ratio of the high-pressure gas exhaust opening process and the closing process. Reasonable selection of the length ratio of the short side, that is, the length ratio of the short side of the rotor opening to the short side of the rotor sleeve opening, can achieve a good balance between the high-pressure air exhaust volume and the gas pulse discontinuity intensity.

[0048] According to the gas pulser of the present invention, preferably, the time ratio of the high-pressure gas exhaust opening process and the closing process is greater than or equal to 1. The exhaust valve opening process is defined as the process from the exhaust valve starting to open, to fully open, to starting to close, and finally to fully close. The exhaust valve closing process is defined as the exhaust valve is fully closed. In the design example of the inventor, when the number of circumferential openings n=3, the exhaust valve opening process angle setting range is 60°~80°, and the exhaust valve closing process angle setting range is 60°~40°; when the number of circumferential openings n=4, the exhaust valve opening process angle setting range is 45°~55°, and the exhaust valve closing process angle setting range is 45°~35°.

[0049] In the gas pulser of the present invention, in order to generate a low resistance torque when the rotor is subjected to the high-pressure gas inside and only a very small gap is left between the rotor sleeve and the outside, a one-way thrust ball bearing is installed between the rotor shaft end and the housing. The shaft ring of the one-way thrust ball bearing and the rotor shaft end adopt an interference fit, and the seat ring of the one-way thrust ball bearing and the housing adopt a clearance fit. The connection form of the one-way thrust ball bearing, the housing and the rotor shaft enables the shaft ring and the seat ring of the one-way thrust ball bearing to achieve automatic centering through balls, ensuring that the bearing is not subjected to radial forces.

[0050] The driving torque of the one-way thrust ball bearing is calculated by the following method:

[0051]

[0052] Where D is the bearing diameter, P is the axial pressure on the bearing, and μ is the friction coefficient of the ball bearing. In the design example of the present invention, the specific values ​​are entered and the driving torque is calculated to be about 1N·m. This will provide a reference for the selection of the drive motor.

[0053] In order to ensure that the one-way thrust ball bearing installed between the rotor shaft end and the housing can run smoothly for a long time, a lubricating oil channel is provided on the pulse transmitter housing, and the opening of the lubricating oil channel is located directly above the housing of the pulse generating part of the gas pulser (not shown).

[0054] Since the one-way thrust ball bearing itself is a known structure to those skilled in the art, it will not be described in detail here.

[0055] According to the gas pulser of the present invention, torque is transmitted between the motor shaft and the rotor via the motor shaft coupling sleeve and the rotor connecting plate, and a cross elastic connection form is adopted. Figure 5 The schematic diagram of the cross elastic connection structure according to the present invention is shown. Figure 5 , which shows the connection relationship between the motor shaft, the motor shaft coupling sleeve, the flat key, the rotor and the cross elastic plate. For the understanding of the following description, the meaning of the large clearance fit in the horizontal direction and the large clearance fit in the vertical direction are also shown.

[0056] like Figure 5 As shown, the connecting plate is integrally matched and embedded in the recess at the connecting end of the rotor, and the end of the motor shaft coupling sleeve is embedded in the inner hole of the connecting plate. A large clearance fit is adopted in a pair of vertical directions, and a small clearance fit is adopted in another pair of vertical directions to realize a cross elastic connection.

[0057] In order to increase the fatigue life of the connection plate, according to the present invention, the four inner corners of the connection plate are chamfered to release stress.

[0058] According to the present invention, the connecting plate material needs to have good elasticity, and 65Mn spring steel is selected. The connecting plate needs to have sufficient strength, so the thickness needs to be greater than 5mm. In the design example of the present invention, the thickness range of the connecting plate is 6 to 8mm.

[0059] like Figure 5 As shown, the motor shaft coupling sleeve adopts an integrated design, and an interference fit is adopted between the coupling sleeve and the flat key. The design effect is that the flat key will not move along the direction of the motor shaft. If movement occurs, the front and back are also constrained; the flat key and the motor shaft adopt a clearance fit. The design effect is that the motor shaft is not subject to other forces when it is stationary, which facilitates the replacement of the motor.

[0060] Figure 6 The schematic diagram of the motor shaft sleeve structure according to the present invention is shown. Figure 6 When the motor shaft coupling sleeve is machined, a U-shaped groove can be milled out with a milling cutter first, and then a keyway can be pulled out with a broach. Considering the processing technology, the coupling sleeve cannot be designed as a blind hole. If it must be designed as a blind hole, the sleeve can also be cut off from the middle and designed into two parts, and the two parts are pressed together by interference.

[0061] The present invention has been described above in conjunction with specific embodiments, and it should be understood that the present invention is not limited to the disclosed specific embodiments. The present invention can be modified to make changes, substitutions or equivalent configurations, but it is consistent with the spirit and scope of the present invention. Therefore, the scope of the present invention should not be viewed as limited by the foregoing description.

Claims

1. A gas pulser, comprising a motor and a control system, a support frame, a housing, an air inlet cover, an air inlet, an air outlet cover and an air outlet, characterized in that: Also includes: Flexible connection system; as well as The rotor pair includes a rotor with an exhaust hole and a solid lubricating rotor sleeve with an exhaust hole, and has a gas stop switch function. The solid lubricating rotor sleeve is fixedly and statically mounted in the housing, and the rotor is driven to rotate in the solid lubricating rotor sleeve by the motor connected through the elastic connection system. The frequency of the high-pressure gas pulses is controlled by controlling the rotation speed of the rotor, and the intensity of the gas pulses is controlled by setting the pressure and flow rate of the inflowing gas; The rotor adopts a multi-action working mode, that is, a plurality of exhaust holes are opened around the rotor, so that a plurality of gas pulses are generated during the rotation of the rotor; The solid lubrication rotor sleeve adopts a multi-channel parallel working mode, that is, a plurality of exhaust holes are opened on the solid lubrication rotor sleeve, one of the exhaust holes is installed opposite to the air outlet, and the distribution phase of the plurality of exhaust holes on the solid lubrication rotor sleeve along the circumferential direction is the same as the distribution phase of the plurality of exhaust holes on the rotor, so that when the rotor is rotating, a plurality of pairs of exhaust holes on the rotor and the solid lubrication rotor sleeve are opened or closed at the same time, thereby realizing multi-channel parallel working and increasing the gas pulse intensity. After the gas is discharged from the plurality of exhaust holes of the solid lubrication rotor sleeve, it passes through the air channel between the solid lubrication rotor sleeve and the shell, and is collected in parallel to the air outlet, and is ejected from the air outlet to form a pulse jet.

2. The gas pulse generator according to claim 1, characterized in that: A one-way thrust ball bearing is installed between the shaft end of the rotor and the housing, so as to enable the rotor to generate a lower resistance torque when the rotor is subjected to the action of high-pressure gas inside and only a very small gap is retained between the rotor outside and the solid lubrication rotor sleeve.

3. The gas pulse generator according to claim 2, characterized in that: The shaft ring of the one-way thrust ball bearing and the shaft end of the rotor adopt an interference fit, and the seat ring of the one-way thrust ball bearing and the housing adopt a clearance fit.

4. The gas pulse generator according to claim 3, characterized in that: The connection between the one-way thrust ball bearing and the housing and the rotor shaft enables the shaft ring and the seat ring of the one-way thrust ball bearing to be automatically aligned through the balls, ensuring that the bearing is not subjected to radial forces.

5. The gas pulse generator according to claim 1, characterized in that: The multiple exhaust holes on the rotor and the solid lubrication rotor sleeve are all square holes, and the square holes are evenly distributed along the circumference. The long side of the square hole is along the axial direction of the rotor and the solid lubricating rotor sleeve, and the lengths of the square holes on the rotor and the solid lubricating rotor sleeve are equal or unequal. The short side of the square hole is along the circumference of the rotor and the solid lubrication rotor sleeve. The short side length on the rotor is smaller than the short side length on the solid lubrication rotor sleeve. Reasonable selection of the short side length determines the time ratio of the high-pressure gas exhaust opening process and the closing process.

6. The gas pulse generator according to claim 5, characterized in that: The time ratio of the high-pressure gas exhaust opening process and the closing process is greater than or equal to 1.

7. The gas pulse generator according to claim 2, characterized in that: A lubricating oil passage is arranged on the housing, and an opening of the lubricating oil passage is located directly above the housing of the gas pulser, so that the one-way thrust ball bearing installed between the rotor shaft end and the housing can run stably for a long time.

8. The gas pulse generator according to claim 1, characterized in that: The elastic connection system comprises: The torque is transmitted between the motor shaft and the rotor through the motor shaft coupling sleeve and the rotor connecting plate, and a cross elastic connection is adopted. The connecting plate is integrally embedded in the concave groove of the connecting end of the rotor, and the end of the motor shaft sleeve is embedded in the inner hole of the connecting plate. A large clearance fit is adopted in a pair of vertical directions, and a small clearance fit is adopted in another pair of vertical directions to realize a cross elastic connection. The four inner corners of the connecting plate are chamfered to release stress and increase the fatigue life of the connecting plate. The connecting plate material is 65Mn spring steel, and the thickness range of the connecting plate is 6 to 8 mm.

9. The gas pulse generator according to claim 8, characterized in that: The motor shaft coupling sleeve adopts an integrated molding design. The coupling sleeve and the flat key adopt an interference fit, and the flat key and the motor shaft adopt a clearance fit. When the motor shaft coupling sleeve is machined, a U-shaped groove is first milled out with a milling cutter, and then the keyway is pulled out with a broach. The motor shaft coupling sleeve is not designed as a blind hole.

10. The gas pulse generator according to claim 8, characterized in that: An interference fit is adopted between the coupling sleeve and the flat key, and a clearance fit is adopted between the flat key and the motor shaft. The motor shaft coupling sleeve is designed as a blind hole, and the sleeve is cut into two parts. One of the parts has a keyway pulled out by a broach during machining, and the two parts are pressed together by interference fit.

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