Electromagnetic coupling gas booster pump

Abstract

The utility model provides an electromagnetic coupling gas booster pump which solves the problems that an existing gas booster pump is complex in structure, large in size and low in transmission efficiency. Comprising a hollow pump body with two through ends, a motor stator is arranged on the inner wall of the pump body; the two ends of the pump body are connected with a first-stage pressure cylinder and a second-stage pressure cylinder respectively, the first-stage pressure cylinder is provided with an air inlet pipe for introducing compressed air, the second-stage pressure cylinder is provided with an exhaust pipe for exhausting the compressed air, and the first-stage pressure cylinder and the second-stage pressure cylinder are communicated through a connecting pipe arranged outside the pump body. A motor rotor electromagnetically coupled with the motor stator is arranged in the pump body, and the two ends of the motor rotor are slidably connected with the first-stage pressure cylinder and the second-stage pressure cylinder respectively. The gas booster pump is widely applied to the technical field of gas booster pumps.

Description

Technical Field

[0001] The present application relates to the technical field of gas booster pumps, and more specifically, to an electromagnetically coupled gas booster pump. Background Art

[0002] As clean energy receives increasing attention, the application, development, and usage of clean gases, particularly hydrogen, are also increasing. Gas booster pumps are key equipment in the production and application of clean gases. They can boost gas pressure to an appropriate range based on production and usage needs, and are widely used in gas storage and transportation.

[0003] Existing gas booster pumps have various operating types. Some gas booster pumps boost the gas by installing a linear electric cylinder outside the pump body, which drives the piston rod to move back and forth through the electric cylinder. Other gas booster pumps boost the gas through air drive, liquid drive, or gas-liquid drive. The above-mentioned existing gas booster pumps have several problems: air-driven gas booster pumps have a complex structure and require an air compressor. The equipment is large and occupies a large area, making it difficult to carry, and the gas flow rate is low. Liquid-driven or gas-liquid-driven gas booster pumps are prone to hydraulic cylinder leakage and compressed gas contamination during long-term use, and the equipment is noisy during switching. The piston and piston rod are prone to wear, the transmission efficiency is low, and the operating energy consumption is high, resulting in low production efficiency. Utility Model Content

[0004] To address the above-mentioned existing problems, the present invention adopts a technical solution: providing an electromagnetically coupled gas booster pump that solves the problems of complex structure, large size, and low transmission efficiency of existing gas booster pumps. The pump comprises a hollow pump body with two through-holes; a motor stator is provided on the inner wall of the pump body; a first-stage booster cylinder and a second-stage booster cylinder are connected at both ends of the pump body, the first-stage booster cylinder is provided with an air inlet pipe for admitting compressed gas, and the second-stage booster cylinder is provided with an exhaust pipe for exhausting compressed gas, the first-stage booster cylinder and the second-stage booster cylinder being connected via a pipe provided on the outside of the pump body; a motor mover is provided inside the pump body that is electromagnetically coupled to the motor stator, and the motor mover has two ends that are slidably connected to the first-stage booster cylinder and the second-stage booster cylinder, respectively.

[0005] Preferably, a guide shaft is provided between the first-stage boosting cylinder and the second-stage boosting cylinder along the length direction of the pump body, and the guide shaft is slidably connected to the motor mover.

[0006] Preferably, both ends of the motor mover extend into the first-stage boost cylinder and the second-stage boost cylinder respectively, and valve bodies are provided at the connections between the motor mover and the first-stage boost cylinder and the second-stage boost cylinder respectively to prevent air leakage, and both ends of the motor mover are slidingly and sealingly connected to the first-stage boost cylinder and the second-stage boost cylinder respectively.

[0007] Preferably, there are multiple gas booster pumps, which are connected in series; the exhaust pipe of the upper gas booster pump is connected to the intake pipe of the lower gas booster pump.

[0008] Preferably, there are multiple gas booster pumps, and the air inlet pipes of the multiple gas booster pumps are connected in parallel.

[0009] Preferably, both ends of the motor mover are provided with a mover sealing ring.

[0010] Preferably, the motor stator includes a stator core provided on the pump body and a stator winding provided on the stator core, and the motor mover is electromagnetically coupled with the stator windings on both sides thereof.

[0011] Preferably, one-way valves are provided on the air inlet pipe, both ends of the connecting pipe and the exhaust pipe along the direction of gas movement.

[0012] Preferably, a mover cavity exhaust pipe is provided on the pump body, one end of the mover cavity exhaust pipe is connected to the inside of the pump body, and the other end is connected to the air inlet pipe; a one-way valve is provided at the end of the mover cavity exhaust pipe connected to the pump body.

[0013] Preferably, the motor mover, the first-stage booster cylinder and the second-stage booster cylinder are coaxially arranged.

[0014] The beneficial effects of the utility model are as follows: the motor mover performs linear reciprocating motion under the electromagnetic coupling with the motor stator, and the motor mover completely converts the electromagnetic coupling effect into motion thrust, thereby realizing efficient energy transmission, high energy utilization rate, reducing unnecessary energy waste, and reducing production costs; the secondary compression of the gas is completed by the reciprocating motion of the motor mover, and the gas is quickly compressed to a high-pressure state with high compression efficiency; the motor mover is built into the pump body, and the motor mover directly compresses the gas, which has a simple structure, reduces the volume of the entire gas booster pump, and has low equipment production costs; when in use, the pump body protects the motor so that it is not easy to wear, thereby extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a front view schematic diagram of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the utility model;

[0019] Figure 4 for Figure 3 Cross-sectional view at AA in the middle;

[0020] Figure 5 It is a schematic diagram of multiple gas booster pumps connected in series;

[0021] Figure 6 Schematic diagram of multiple gas booster pumps connected in parallel.

[0022] Explanation of symbols in the figure: 1. Pump body; 2. Motor stator; 3. First-stage boost cylinder; 4. Second-stage boost cylinder; 5. Inlet pipe; 6. Exhaust pipe; 7. Connecting pipe; 8. Motor mover; 9. Mover cavity exhaust pipe; 10. Guide shaft; 11. Mover sealing ring; 12. Stator core; 13. Stator winding; 14. One-way valve. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0025] It should be noted that the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "primary" or "secondary" may explicitly or implicitly include one or more of such features. In the description of this application, "multiple" means two or more, unless otherwise specifically defined.

[0026] An electromagnetically coupled gas booster pump provided in an embodiment of the present application is now described.

[0027] See also Figures 1 to 4, is a structural schematic diagram of the present invention, the electromagnetically coupled gas booster pump comprises a pump body 1 which is hollow inside and through at both ends; a motor stator 2 is provided on the inner wall of the pump body 1; a first-stage booster cylinder 3 and a second-stage booster cylinder 4 are connected to both ends of the pump body 1 respectively, the first-stage booster cylinder 3 is provided with an air intake pipe 5 for introducing compressed gas, the second-stage booster cylinder 4 is provided with an exhaust pipe 6 for discharging compressed gas, the first-stage booster cylinder 3 and the second-stage booster cylinder 4 are connected through a connecting pipe 7 provided on the outside of the pump body 1; a motor mover 8 which is electromagnetically coupled to the motor stator 2 is provided inside the pump body 1, and the two ends of the motor mover 8 are slidingly connected to the first-stage booster cylinder 3 and the second-stage booster cylinder 4 respectively.

[0028] Specifically, during operation, the motor stator 2 is energized to generate a magnetic field, and compressed gas enters the primary boost cylinder 3 through the intake pipe 5. Under the electromagnetic coupling between the motor stator 2 and the motor mover 8, the motor mover 8 first moves toward the primary boost cylinder 3. The end of the motor mover 8 compresses the gas in the primary boost cylinder 3. The gas in the primary boost cylinder 3 then enters the secondary boost cylinder 4 through the pipe 7. At this point, the motor mover 8 moves toward the secondary boost cylinder 4, performing a secondary compression on the compressed gas in the secondary boost cylinder 4. Within the primary boost cylinder 3, the gas undergoes a boosting process from low pressure to medium pressure. Within the secondary boost cylinder 4, the gas, after the primary compression, completes a compression process from medium pressure to high pressure. The compressed gas, after secondary compression, reaches the required pressure and is discharged through the exhaust pipe 6 on the secondary boost cylinder 4. Under the electromagnetic coupling with the motor stator 2, the motor mover 8 performs a linear reciprocating motion, completely converting the electromagnetic coupling into kinetic thrust. This achieves efficient energy transfer, high energy utilization, reduced unnecessary energy waste, and lowers production costs. The reciprocating motion of the motor mover 8 completes secondary compression of the gas, rapidly compressing the gas to a high-pressure state with high compression efficiency. Electromagnetic control is precise and flexible, allowing staff to promptly adjust electromagnetic parameters and frequency conversion to control the movement of the motor mover 8, control the number of reciprocating movements of the motor mover 8, adjust the displacement, and flexibly and accurately adjust the working state of the gas booster pump to accommodate a variety of production scenarios. The motor mover 8 is built into the pump body 1 and directly compresses the gas, resulting in a simple structure, a reduced size of the entire gas booster pump, and low equipment production costs. During use, the pump body 1 protects the motor from wear and tear, extending the motor's service life.

[0029] Furthermore, a guide shaft 10 is provided between the first-stage boosting cylinder 3 and the second-stage boosting cylinder 4 along the length direction of the pump body 1 , and the guide shaft 10 is slidably connected to the motor mover 8 ; the motor mover 8 performs reciprocating linear motion along the guide shaft 10 .

[0030] Furthermore, the motor mover 8 extends at both ends into the first and second boost cylinders 3, 4, respectively. Leak-proof valves are installed at the connections between the motor mover 8 and the first and second boost cylinders 3, 4, respectively. The motor mover 8 forms a sliding, sealed connection with the first and second boost cylinders 3, 4, respectively. Specifically, the valves enhance the sealing effectiveness and stability of the first and second boost cylinders 3, 4. Through electromagnetic coupling with the motor stator 2, the motor mover 8 continuously compresses the gas within the first and second boost cylinders 3, 4.

[0031] In one embodiment, a sealing performance monitoring system is externally connected to the first-stage booster cylinder 3 and the second-stage booster cylinder 4 to detect the internal sealing status in real time. Once gas leakage is detected in the first-stage booster cylinder 3 and the second-stage booster cylinder 4, the sealing performance monitoring system will promptly issue an alarm signal.

[0032] See also Figure 5 , is a schematic diagram of multiple gas booster pumps connected in series. In one embodiment, multiple gas booster pumps are connected in series; the exhaust pipe 6 of the previous gas booster pump is connected to the intake pipe 5 of the next gas booster pump. The electromagnetically coupled gas booster pump provided by this utility model has a simple structure, is easy to install, and is easily stackable, facilitating modular assembly. When high compressed gas pressure is required, multiple gas booster pumps can be connected in series, maintaining a constant gas flow rate, and quickly achieving high pressure through multiple-stage booster cylinders.

[0033] See also Figure 6 , a schematic diagram of multiple gas booster pumps connected in parallel. In one embodiment, multiple gas booster pumps are provided, and their inlet pipes 5 are connected in parallel. When a high flow rate of compressed gas is required, the booster pumps can be connected in series; while the compressed gas pressure remains constant, the flow rate is increased simultaneously through multiple booster cylinders of the same level.

[0034] Furthermore, a rotor sealing ring 11 is provided at both ends of the motor rotor 8 to increase a certain resistance and prevent the motor rotor 8 from completely entering the boost cylinders on both sides.

[0035] Furthermore, the motor stator 2 includes a stator core 12 mounted on the pump body 1 and stator windings 13 mounted on the stator core 12. The motor mover 8 is electromagnetically coupled to the stator windings 13 on either side. When current passes through the stator windings 13, a magnetic field is generated. This magnetic field electromagnetically couples with the motor mover 8, generating a force that moves the motor mover 8. The reciprocating motion of the motor mover 8 effectively boosts the pressure of the gas within the first-stage boost cylinder 3 and the second-stage boost cylinder 4. In various embodiments, different coil turns, shapes, and positions can be designed according to different production needs, and the appropriate magnetic materials can be selected to improve the magnetic field distribution between the motor stator 2 and the motor mover 8, thereby enhancing the efficiency of electromagnetic coupling.

[0036] Furthermore, one-way valves 14 are provided on both ends of the air inlet pipe 5 and the connecting pipe 7 and the exhaust pipe 6 along the direction of gas movement to prevent the gas from flowing in the reverse direction.

[0037] Furthermore, the pump body 1 is provided with a rotor cavity exhaust pipe 9, one end of which communicates with the interior of the pump body 1 and the other end with the air inlet pipe 5. A one-way valve 14 is provided at the end of the rotor cavity exhaust pipe 9 that communicates with the pump body 1. As the motor rotor 8 reciprocates, a small amount of gas leaks into the pump body 1 from the connection between the motor rotor 8 and the first and second booster cylinders 3, 4. Once the compressed gas reaches a certain pressure, it enters the first booster cylinder 3 through the rotor cavity exhaust pipe 9 for recompression.

[0038] Furthermore, the motor mover 8, the first-stage boost cylinder 3 and the second-stage boost cylinder 4 are coaxially arranged.

[0039] In one embodiment, the motor stator 2 is connected to a high-precision sensor component and a controller component. The staff pre-establishes an accurate boost control model according to production requirements, and uses the sensor component and the controller component to monitor and adjust key parameters such as current intensity and frequency during the boost process in real time, thereby achieving precise control of the boost degree and speed of the gas boost pump.

[0040] In one embodiment, a cooling water jacket is provided on the outside of the pump body 1 , and circulating cooling water is introduced into the cooling water jacket to cool the motor inside the pump body 1 and to eliminate the heat generated by the reciprocating motion of the motor mover 8 in a timely manner.

[0041] The working principle of the present utility model is as follows: during use, the motor stator 2 is energized to generate a magnetic field, and compressed gas enters the first-stage boost cylinder 3 through the intake pipe 5. Under the electromagnetic coupling between the motor stator 2 and the motor mover 8, the motor mover 8 first moves toward the first-stage boost cylinder 3. The end of the motor mover 8 compresses the gas in the first-stage boost cylinder 3 once. The gas in the first-stage boost cylinder 3 then enters the second-stage boost cylinder 4 through the connecting pipe 7. At this time, the motor mover 8 moves toward the second-stage boost cylinder 4, performing a second compression on the compressed gas in the second-stage boost cylinder 4. In the first-stage boost cylinder 3, the gas completes the boosting process from low pressure to medium pressure; in the second-stage boost cylinder 4, the gas after the first compression completes the compression process from medium pressure to high pressure. The compressed gas, after the second compression, reaches the standard and is discharged from the exhaust pipe 6 on the second-stage boost cylinder 4.

[0042] In the present invention, the motor mover 8 performs linear reciprocating motion under the electromagnetic coupling with the motor stator 2. The motor mover 8 completely converts the electromagnetic coupling into motion thrust, thereby realizing efficient energy transfer, high energy utilization, reducing unnecessary energy waste, and reducing production costs; the reciprocating motion of the motor mover 8 completes the secondary compression of the gas, and the gas is quickly compressed to a high-pressure state with high compression efficiency; the motor mover 8 is built into the pump body 1, and the motor mover 8 directly compresses the gas, with a simple structure, reducing the volume of the entire gas booster pump, and low equipment production cost; when in use, the pump body 1 protects the motor so that it is not easy to wear, thereby extending the service life of the motor.

[0043] The above specific implementation methods do not cover the entire scope of protection of this application. Modifications or equivalent replacements of the utility model should all fall within the scope of patent coverage of this application. In this utility model, the above-mentioned embodiments are only used to illustrate the technical solutions of this application, rather than to limit them. Although this application has been described in detail with reference to the above-mentioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the above-mentioned embodiments, or to replace some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included in the scope of protection of this application.

Claims

1. An electromagnetically coupled gas booster pump, comprising a pump body with a hollow interior and two through-holes, characterized in that: A motor stator is provided on the inner wall of the pump body; a first-stage boosting cylinder and a second-stage boosting cylinder are respectively connected to both ends of the pump body, the first-stage boosting cylinder is provided with an air inlet pipe for introducing compressed gas, and the second-stage boosting cylinder is provided with an exhaust pipe for discharging compressed gas, and the first-stage boosting cylinder and the second-stage boosting cylinder are connected through a connecting pipe provided on the outside of the pump body; a motor mover electromagnetically coupled to the motor stator is provided inside the pump body, and both ends of the motor mover are slidingly connected to the first-stage boosting cylinder and the second-stage boosting cylinder respectively.

2. The electromagnetically coupled gas booster pump according to claim 1, wherein: A guide shaft is provided between the first-stage boosting cylinder and the second-stage boosting cylinder along the length direction of the pump body, and the guide shaft is slidably connected to the motor mover.

3. The electromagnetically coupled gas booster pump according to claim 1, wherein: The two ends of the motor mover extend into the first-stage booster cylinder and the second-stage booster cylinder respectively. The connections between the motor mover and the first-stage booster cylinder and the second-stage booster cylinder are respectively provided with valve bodies to prevent air leakage. The two ends of the motor mover are respectively connected to the first-stage booster cylinder and the second-stage booster cylinder in a sliding and sealing manner.

4. The electromagnetically coupled gas booster pump according to claim 1, wherein: There are multiple gas booster pumps, which are connected in series; the exhaust pipe of the upper gas booster pump is connected to the intake pipe of the lower gas booster pump.

5. The electromagnetically coupled gas booster pump according to claim 1, wherein: There are multiple gas booster pumps, and the air inlet pipes of the multiple gas booster pumps are connected in parallel.

6. The electromagnetically coupled gas booster pump according to claim 1, wherein: Both ends of the motor mover are respectively provided with mover sealing rings.

7. The electromagnetically coupled gas booster pump according to claim 1, wherein: The motor stator includes a stator core provided on the pump body and a stator winding provided on the stator core. The motor mover is electromagnetically coupled with the stator windings on both sides thereof.

8. The electromagnetically coupled gas booster pump according to claim 1, wherein: One-way valves are provided on the air inlet pipe, both ends of the connecting pipe and the exhaust pipe along the direction of gas movement.

9. The electromagnetically coupled gas booster pump according to claim 8, characterized in that: The pump body is provided with a mover cavity exhaust pipe, one end of which is connected to the interior of the pump body, and the other end is connected to the air inlet pipe; the one end of the mover cavity exhaust pipe connected to the pump body is provided with the one-way valve.

10. The electromagnetically coupled gas booster pump according to claim 1, characterized in that: The motor mover, the first-stage boosting cylinder and the second-stage boosting cylinder are coaxially arranged.

Images