Single-driver two-stage gas supercharging device

Abstract

The utility model provides a single-driver two-stage gas supercharging device which aims at achieving efficient and compact two-stage gas compression through a single driver. The supercharging device comprises a first-stage compressor, a second-stage compressor, a driver and a power structure of the driver, the first-stage compressor and the second-stage compressor are arranged on the two sides of the driver respectively, and sequential compression of gas is achieved through a compressed gas conveying pipeline. The driver comprises a driving piece and a power structure, and driving gas is used for pushing the piston to conduct first-stage compression and second-stage compression. Through linkage control of the two-position four-way pneumatic control valve and the pilot valve, the driving gas is automatically reversed so as to control reciprocating motion of the driving piston, and stable switching between first-stage compression and second-stage compression is achieved. The supercharging device has the advantages of being compact in structure, high in automation degree, high in working efficiency, high in stability and the like, is suitable for various industrial applications needing high-pressure gas, and is particularly suitable for the space-limited environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas pressurization, and particularly to a single-driver two-stage gas pressurization device. BACKGROUND

[0002] In industrial production and scientific research, gas pressurizers are widely used in industries such as petroleum and natural gas, chemical industry, aerospace, food processing, etc., for raising the pressure of gas to the required level. The traditional multi-stage pressurization system often uses multiple independent drive units to be responsible for the pressurization task of each stage, which makes the whole system bulky and heavy, and due to the complex coordination control between the drive units, it is easy to cause faults, affecting the reliability and stability of the system. At the same time, the design of multiple drive units also increases the complexity of gas path control, resulting in large operating noise, which is not conducive to use in environments sensitive to noise or with potential explosion hazards. CONTENT OF THE UTILITY MODEL

[0003] In view of one or more of the problems existing in the prior art, the present application provides a single-driver two-stage gas pressurization device, comprising:

[0004] a first-stage compressor, a first-stage compression cavity is formed in the first-stage compressor, and a first-stage compression inlet and a first-stage compression outlet are arranged on the first-stage compressor and communicate with the first-stage compression cavity;

[0005] a second-stage compressor, a second-stage compression cavity is formed in the second-stage compressor, and a second-stage compression inlet and a second-stage compression outlet are arranged on the second-stage compressor and communicate with the second-stage compression cavity, and the first-stage compression outlet is connected with the second-stage compression inlet through a compressed gas conveying pipeline;

[0006] a driver, comprising a power structure and a driving member in which a driving cavity is formed, and the first-stage compressor and the second-stage compressor are respectively arranged on both sides of the driving member;

[0007] The power structure comprises a driving rod, a first-stage compression piston, a second-stage compression piston and a driving piston, the driving rod penetrates the first-stage compression cavity, the driving cavity and the second-stage compression cavity in sequence, the part of the driving rod located in the first-stage compression cavity is fixedly connected with the first-stage compression piston, the part of the driving rod located in the second-stage compression cavity is fixedly connected with the second-stage compression piston, and the part of the driving rod located in the driving cavity is fixedly connected with the driving piston, and the driving piston divides the driving cavity into a first-stage compression driving cavity and a second-stage compression driving cavity;

[0008] A valve assembly is arranged on the driving member and used for conveying driving gas into the first-stage compression driving cavity and the second-stage compression driving cavity.

[0009] Preferably, the valve assembly comprises a two-position four-way pneumatic control valve and a driving gas interface provided on the two-position four-way pneumatic control valve, the two-position four-way pneumatic control valve is in communication with the primary compression driving cavity, and the driving gas interface is used to receive external driving gas and deliver it to the primary compression driving cavity to make the driving piston perform primary compression.

[0010] Preferably, the driving member comprises a first driving reversing control member, which is arranged on the inner wall of the secondary compression driving cavity near the side of the primary compression cavity, and is connected with the two-position four-way pneumatic control valve, when the driving piston contacts the first driving reversing control member after the completion of primary compression, the first driving reversing control member can control the two-position four-way pneumatic control valve to deliver driving gas into the secondary compression driving cavity.

[0011] Preferably, the driver further comprises a driving gas delivery pipeline, the two-position four-way pneumatic control valve is in communication with the secondary compression driving cavity through the driving gas delivery pipeline, which is used to deliver driving gas to the secondary compression driving cavity to make the driving piston perform secondary compression.

[0012] Preferably, the driving member comprises a second driving reversing control member, which is arranged on the inner wall of the primary compression driving cavity near the side of the secondary compression cavity, and is connected with the two-position four-way pneumatic control valve, when the driving piston contacts the second driving reversing control member after the completion of secondary compression, the second driving reversing control member can control the two-position four-way pneumatic control valve to deliver driving gas into the primary compression driving cavity.

[0013] Preferably, the single-driver double-stage gas supercharging device further comprises a cooler, the cooler comprises a first cooling cavity, a second cooling cavity, a cooling fluid delivery pipeline and a cooling pipeline; wherein,

[0014] The first cooling cavity and the second cooling cavity are respectively arranged outside the primary compression cavity and the secondary compression cavity;

[0015] The two-position four-way pneumatic control valve is in communication with the second cooling cavity through the cooling fluid delivery pipeline, which is used to deliver cooling fluid into the second cooling cavity, and the second cooling cavity is in communication with the first cooling cavity through the cooling pipeline.

[0016] Preferably, the cooling pipeline is arranged outside the compressed gas delivery pipeline, which is used to cool the compressed gas in the compressed gas delivery pipeline.

[0017] Preferably, the primary compressor is provided with an exhaust muffler, which is in communication with the first cooling cavity.

[0018] The operation principle of the single-driver two-stage gas booster provided by the present application is as follows:

[0019] Primary compression process:

[0020] The external driving gas enters the primary compression driving chamber through the valve assembly (such as a two-position four-way pneumatic control valve), pushing the driving piston to move to one side of the primary compression chamber.

[0021] With the movement of the driving piston, it drives the driving rod to make the primary compression piston preliminarily compress the gas in the primary compression chamber.

[0022] The compressed gas is discharged from the primary compression outlet and transported to the secondary compressor through the compressed gas delivery pipeline.

[0023] Secondary compression process:

[0024] When the primary compression is completed, the driving piston will contact the first driving reversing control (such as the first pilot valve) arranged on one side of the secondary compression driving chamber, thereby triggering the valve assembly to change the direction of the driving gas.

[0025] The driving gas is guided into the secondary compression driving chamber, so that the driving piston moves reversely, thereby pushing the secondary compression piston to further compress the gas from the primary compressor in the secondary compression chamber.

[0026] After the gas in the secondary compressor is compressed to a higher level, it reaches a higher pressure level and is discharged from the secondary compression outlet.

[0027] During this process, if necessary, the cooler can absorb and dissipate the heat generated by compression to maintain the stability and efficiency of the system.

[0028] Recycling:

[0029] When the secondary compression is completed, the driving piston moves to the other end and contacts the second driving reversing control, again changing the state of the valve assembly to redirect the driving gas back to the primary compression driving chamber, starting a new compression cycle.

[0030] Such a cycle ensures continuous and efficient two-stage compression operation.

[0031] Force balance and stopping condition:

[0032] The work of the single-driver two-stage gas booster is determined by the force balance relationship at both ends of the piston. When the forces of the driving gas and the compressed gas acting on the piston reach balance, the booster stops working.

[0033] If the downstream system consumes part of the compressed gas, causing the pressure to drop, the control system will start the booster to restore the compression process.

[0034] Temperature management and noise control:

[0035] The cooler is integrated into the system and cools the compression chamber and compressed gas delivery pipeline with cooling fluid to prevent overheating from affecting performance or safety.

[0036] The exhaust muffler is installed on the first-stage compressor and connected to the cooling chamber, which helps to discharge the cooling air while reducing operating noise.

[0037] The single-driver two-stage gas booster device provided by this application has at least the following beneficial effects:

[0038] The single-driver two-stage gas boosting device provided in this application can effectively improve gas boosting efficiency, optimize system performance, and provide a more stable and reliable working environment.

[0039] First, through the integrated compressor, driver, and power structure design, the device achieves a compact layout of primary and secondary compression, making the boosting process more efficient. The primary and secondary compressors are located on either side of the driver, reducing space usage and simplifying the gas flow path. The transmission of compressed gas from the primary compressor to the secondary compressor not only improves overall boosting efficiency but also ensures that the gas pressure is fully increased at different stages, maximizing the demand for high-pressure gas applications.

[0040] Secondly, the device's two-position, four-way air-controlled valve and pilot valve control system enable precise switching and flow regulation of the drive gas, further improving the system's automation and response speed. Through the coordinated control of the two-position, four-way air-controlled valve and pilot valve, the system automatically switches to two-stage compression mode after the first stage of compression is completed, and then switches back to the first stage after the second stage of compression is completed, ensuring the continuity and stability of the gas pressurization process. In addition, the two-position, four-way air-controlled valve and gas path design simplify the complexity of gas transmission, reduce system pressure loss, and improve overall energy efficiency.

[0041] Finally, the integration of the cooler effectively addresses the heat generated during the compression process. Through the dual cooling design of the primary and secondary cooling chambers, the device effectively absorbs and dissipates the heat generated by the compressed gas without requiring additional space. The cooling pipes are installed outside the compressed gas delivery pipeline, which not only improves the cooling effect but also prevents system overheating, thereby ensuring the stability of the device under high loads and long-term operational reliability. The addition of an exhaust muffler further optimizes the system's noise control, making the device adaptable to more stringent operating environments and enhancing the overall applicability of the equipment.

[0042] In summary, the single-driver dual-stage gas pressurization device of the present application has obvious advantages in gas pressurization efficiency, automatic control, heat management, and noise control, and can be widely applied to various industrial scenes with high-pressure gas demand. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:

[0044] Figure 1 is a perspective structural schematic diagram of a single-driver dual-stage gas pressurization device provided by an embodiment of the present application;

[0045] Figure 2 is a structural schematic diagram of the single-driver dual-stage gas pressurization device from another angle provided by an embodiment of the present application;

[0046] Figure 3 is a cross-sectional structural schematic diagram of the single-driver dual-stage gas pressurization device provided by an embodiment of the present application;

[0047] Figure 4 is a cross-sectional structural schematic diagram of the single-driver dual-stage gas pressurization device provided by another embodiment of the present application.

[0048] REFERENCE NUMERALS:

[0049] 1, primary compressor; 11, primary compression chamber; 111, primary compression inlet; 112, primary compression outlet; 12, compressed gas delivery pipeline; 13, exhaust muffler

[0050] 2, secondary compressor; 21, secondary compression chamber; 211, secondary compression inlet; 212, secondary compression outlet

[0051] 3, driver

[0052] 31, driving member; 311, driving chamber; 3111, primary compression driving chamber; 3112, secondary compression driving chamber; 312, valve assembly; 3121, two-position four-way pneumatic control valve; 3122, driving gas interface; 313, first driving reversing control member; 3131, first valve core; 3132, first valve body; 3133, first pilot gas path; 314, driving gas delivery pipeline; 315, second driving reversing control member; 3151, second valve core; 3152, second valve body; 3153, second pilot gas path

[0053] 32, power structure; 321, driving rod; 322, primary compression piston; 323, secondary compression piston; 324, driving piston

[0054] 4. Cooler; 41. First cooling chamber; 42. Second cooling chamber; 43. Cooling fluid delivery conduit; 44. Cooling conduit. DETAILED DESCRIPTION

[0055] Embodiments of the present application will be described in detail below with reference to the drawings, which are provided as examples of embodiments of the present application, and components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0056] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor fall within the scope of protection of the present application.

[0057] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The embodiments of the present application will be described below in conjunction with Figure 1 and Figure 3 The technical solutions of the present application are described clearly and completely, obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0060] Figure 1 is a perspective structural schematic diagram of a single-driver two-stage gas supercharging device provided by an embodiment of the present application, Figure 2 is a structural schematic diagram of the single-driver two-stage gas supercharging device from another angle provided by an embodiment of the present application, Figure 3 is a cross-sectional structural schematic diagram of the single-driver two-stage gas supercharging device provided by an embodiment of the present application.

[0061] Referring to Figures 1 to 3 The single-driver dual-stage gas pressurization device provided by the embodiment of the present application aims to realize efficient and compact two-stage gas compression through a single driver. The single-driver dual-stage gas pressurization device comprises a first-stage compressor 1, a second-stage compressor 2, and a driver 3. The first-stage compressor 1 and the second-stage compressor 2 are respectively installed on the two sides of the driver 3, thereby ensuring compact design and efficient working process.

[0062] The first-stage compressor 1 is arranged on one side of the driver 3 and has a first-stage compression cavity 11 formed inside. The first-stage compressor 1 is provided with a first-stage compression inlet 111 and a first-stage compression outlet 112 which are in communication with the first-stage compression cavity 11. Compressed gas enters the first-stage compression inlet 111 and is preliminarily compressed in the first-stage compression cavity 11. The compressed gas is discharged through the first-stage compression outlet 112 and directly delivered to the second-stage compressor 2 through a compressed gas delivery pipeline 12 for second-stage compression. This layout simplifies the gas flow path and improves the overall efficiency of the system.

[0063] The second-stage compressor 2 is arranged on the other side of the driver 1 and opposite to the first-stage compressor 11. It has a second-stage compression cavity 21 formed inside for secondary compression of the compressed gas from the first-stage compressor 11. The second-stage compressor 2 is provided with a second-stage compression inlet 211 and a second-stage compression outlet 212 which are in communication with the second-stage compression cavity 21. Compressed gas enters the second-stage compression inlet 211 and is further compressed in the second-stage compression cavity 21, and finally discharged from the second-stage compression outlet 212 to complete the entire two-stage compression process. The design of the second-stage compressor 2 ensures that the gas can be output at a higher pressure, which is suitable for application scenarios requiring higher pressure gas.

[0064] The driver 3 comprises a driving member 31 and a power structure 32. The driving member 31 has a driving cavity 311 formed inside. The power structure 32 comprises a driving rod 321, a first-stage compression piston 322, a second-stage compression piston 323, and a driving piston 324.

[0065] The driving rod 321 sequentially penetrates the first-stage compression cavity 11, the driving cavity 311, and the second-stage compression cavity 21, and is fixedly connected with the first-stage compression piston 322 located in the first-stage compression cavity 11, the second-stage compression piston 323 located in the second-stage compression cavity 21, and the driving piston 324 located in the driving cavity 311.

[0066] The driving piston 324 divides the driving cavity 311 into two independent spaces, i.e., the primary compression driving cavity 3111 and the secondary compression driving cavity 3112, to ensure that the compression processes at different stages can be carried out in order. For example, when the driving gas enters the primary compression driving cavity 3111, the primary compression piston 322 can be pushed to compress the gas in the primary compression cavity 11 by the driving piston 324 pushing the driving rod 321; and when switched to the secondary compression, the driving gas enters the secondary compression driving cavity 3112 to push the driving rod 321 to move reversely, so that the secondary compression piston 323 further compresses the gas in the secondary compression cavity 21, thereby realizing continuous and efficient two-stage compression.

[0067] The driving member 31 is provided with a valve assembly 312, which can be connected with an external driving gas source and is in communication with the primary compression driving cavity 3111 and the secondary compression driving cavity 3112, respectively. When the driving gas is introduced into the driving cavity 311 through the valve assembly 312, the driving piston 324 moves in the driving cavity 311 according to the direction of the gas flow, and in turn drives the driving rod 321 and the primary compression piston 322 and the secondary compression piston 323 connected thereto to reciprocate.

[0068] In this embodiment, the single-driver two-stage gas supercharging device realizes efficient supercharging of the gas through the combined action of the driving gas and the compressed gas. The output pressure is determined by the pressure of the driving gas and the downstream load. Specifically, the compressed gas first enters the primary compressor 1, and through the action of the power structure 32 under the driving of the driving gas, the gas pressure can be supercharged to a maximum of 5 times the original pressure. Then, the compressed gas enters the secondary compressor 2 from the outlet of the primary compressor 1 and is compressed again to reach the set pressure. In the secondary compressor 2, the gas pressure can be supercharged to a maximum of 30 times the original pressure to meet the demand of high-pressure applications.

[0069] The operation of the single-driver two-stage gas supercharging device is determined by the force balance relationship at both ends of the piston (i.e., the power structure 32). When the forces of the driving gas and the compressed gas acting on the piston reach balance, the supercharging device stops working. With the consumption of the compressed gas by the downstream system, the downstream pressure gradually decreases, and the supercharging device can be controlled to restart through an artificial or automatic control system, thereby resuming the compression process.

[0070] The working principle of the device is based on the pressure formula:

[0071] The pressure on the acting surface = pressure per unit area (i.e., pressure) × area of the acting surface.

[0072] In specific operation, the lower pressure of the driving gas acts on the large area of the driving piston 324, and through the connection of the driving piston 324 and the driving rod 321, the force is transmitted to the primary compression piston 322 and the secondary compression piston 323. Due to the smaller area of the primary compression piston 322 and the secondary compression piston 323, according to the force balance relationship, they can exert higher pressure on the compressed gas. Only when the forces on both ends of the piston reach a balanced state, the entire supercharging device will stop working.

[0073] This working principle ensures that the device can efficiently utilize the driving gas to achieve the supercharging process, and at the same time meet the downstream pressure demand, while optimizing the energy use efficiency. The dual-stage compression method adopted by the device can further enhance the gas pressure through secondary compression after the primary compression achieves preliminary supercharging, thereby adapting to the demand for high-pressure gas in different application scenarios, while maintaining the compactness of the structure and the high reliability of operation.

[0074] In some specific examples, the pressure acting surface area of the secondary compression piston 323 is smaller than that of the primary compression piston 322, so as to further compress the gas.

[0075] In some specific examples, the primary compression inlet 111, the primary compression outlet 112, the secondary compression inlet 211, and the secondary compression outlet 212 are all one-way valves, so that the gas cannot flow backward, and their opening and closing can be controlled by the controller to ensure the normal progress of gas compression.

[0076] In some embodiments, the valve assembly 312 includes a two-position four-way air control valve 3121 and a driving gas interface 3122. The driving gas interface 3122 is in communication with an external driving gas source and is arranged on the two-position four-way air control valve 3121. The two-position four-way air control valve 3121 is in communication with the primary compression driving chamber 3111 for receiving external driving gas and delivering it to the primary compression driving chamber 3111 to make the driving piston 324 perform primary compression.

[0077] In some embodiments, the structure of the valve assembly 312 includes a two-position four-way air control valve 3121 and a driving gas interface 3122 for efficient transmission and control of driving gas. The driving gas interface 3122 can be directly connected to an external driving gas source, such as a compressed air system or a high-pressure gas tank, to provide stable driving gas supply. The driving gas interface 3122 is arranged on the two-position four-way air control valve 3121, thereby realizing a compact design and simplifying the pipeline connection.

[0078] The two-position four-way air control valve 3121 is connected to the first-stage compression drive chamber 3111 through its built-in air path switching mechanism, and is used to receive the driving gas delivered by the external gas source and deliver it to the first-stage compression drive chamber 3111. After the driving gas enters the first-stage compression drive chamber, it pushes the driving piston 324 to move in a specific direction (such as the attached Figure 3 The first compression piston 322 moves from left to right in the middle, thereby driving the driving rod 321 and the first compression piston 322 to complete the first compression action.

[0079] During operation, the switching state of the two-position, four-way air-controlled valve 3121 can be automatically adjusted by external control signals. For example, after the first-stage compression drive chamber 3111 completes the movement of the drive piston 324, the two-position, four-way air-controlled valve 3121 can switch the air path, discharging the drive gas into the exhaust pipe or transferring it to another chamber (such as the second-stage compression drive chamber), thereby achieving a continuous compression cycle.

[0080] Furthermore, the 2-position, 4-way air-controlled valve 3121 effectively reduces the complexity of the system's internal gas circuits, minimizing pressure loss during gas transmission and improving overall equipment efficiency. The 2-position, 4-way air-controlled valve 3121 not only facilitates connection to various external gas sources but also improves system sealing and safety by reducing the number of venting interfaces. While achieving precise control of the drive gas, the 2-position, 4-way air-controlled valve 3121 also boasts a compact structure, ease of installation, and ease of maintenance, making it suitable for a wide range of industrial applications.

[0081] Figure 4 It is a schematic cross-sectional structural diagram of a single-driver two-stage gas boosting device provided in another embodiment of the present application.

[0082] In some embodiments, see Figure 4 A first drive reversing control element 313 is installed on the inner wall of the secondary compression drive chamber 3112, near the primary compression chamber 11, to achieve coordinated control between the primary and secondary compression. This first drive reversing control element 313 is connected to a two-position, four-way air control valve 3121 to deliver and switch the drive gas.

[0083] For a specific example, see Figure 4 The first drive reversing control component 313 can specifically adopt a first pilot valve, including a first valve core 3131, a first valve body 3132 and a first pilot air path 3133. The first pilot air path 3133 passes through the first valve core 3131 and the first valve body 3132 and is finally connected to the two-position four-way air control valve 3121. It can control the reversing of the two-position four-way air control valve 3121 by supplying the first pilot air to the two-position four-way air control valve 3121. The reversing mechanism belongs to the conventional technology in this field, so it will not be repeated here.

[0084] The first valve body 3132 is fixed on the right side wall of the secondary compression driving cavity 3112, and the first valve core 3131 is matched with the first valve body 3132 through a spring to control the opening and closing of the first pilot gas path 3133. The first valve core 3131 protrudes into the secondary compression driving cavity 3112. During the primary compression process, the driving piston 324 moves to the right, and the first valve core 3131 is touched, so that the first valve core 3131 moves to the right relative to the fixed first valve body 3132, the spring is compressed, and the first pilot gas path 3133 is connected, so that the first pilot gas is delivered to the two-position four-way gas control valve 3121 to control the switching of the driving gas, that is, the driving gas is delivered to the secondary compression driving cavity 3112, and the secondary compression process is started, so that the driving piston 324 moves to the left, the restriction on the first valve core 3131 is released, the first valve core 3131 is matched with the first valve body 3132 under the action of the spring, the first pilot gas path 3133 is disconnected, the control of the two-position four-way gas control valve 3121 is ended, and the original position is restored to wait for the next control. Figure 4

[0085] The introduction of the first driving switching control member 313 makes the switching process of the primary compression and the secondary compression completely automatic, without the need for additional electronic control devices, and simplifies the complexity of the control system. Moreover, the triggering condition of the first driving switching control member 313 is realized through mechanical contact of the driving piston 324, and this direct triggering mode effectively improves the reliability of the system and reduces the possible failure points.

[0086] In some embodiments, the two-position four-way gas control valve 3121 is communicated with the secondary compression driving cavity 3112 through the driving gas delivery pipeline 314, and is used to deliver the driving gas to the secondary compression driving cavity 3112 to make the driving piston 324 perform secondary compression.

[0087] In some embodiments, referring to Figure 4 The second driving switching control member 315 is arranged on the inner wall of the side of the primary compression driving cavity 3111 close to the secondary compression cavity 21, and is used to realize the cycle compression process after the secondary compression is completed. The second driving switching control member 315 is connected with the two-position four-way gas control valve 3121 to realize the delivery and switching of the driving gas.

[0088] In a specific example, referring to Figure 4 The second driving switching control member 315 can specifically adopt a second pilot valve, which includes a second valve core 3151, a second valve body 3152, and a second pilot gas path 3153. The second pilot gas path 3153 passes through the second valve core 3151 and the second valve body 3152 and is finally communicated with the two-position four-way gas control valve 3121, so as to control the switching of the two-position four-way gas control valve 3121 by delivering the second pilot gas to the two-position four-way gas control valve 3121. ​

[0089] The second valve body 3152 is fixed on the left side wall of the primary compression driving cavity 3112, and the second valve core 3151 is capable of controlling the opening and closing of the second pilot gas path 3153 by cooperating with the second valve body 3152 through a spring. The second valve core 3151 protrudes into the inside of the primary compression driving cavity 3111. During the secondary compression process, the driving piston 324 moves to the left side in the primary compression driving cavity 3111, and then touches the second valve core 3151, so that the second valve core 3151 moves to the left side relative to the fixed second valve body 3152, and the spring is compressed, thereby connecting the second pilot gas path 3153, and then capable of delivering the second pilot gas to the two-position four-way gas control valve 3121 to control the driving gas to change direction, that is, to start delivering the driving gas to the primary compression driving cavity 3111, and then to start the primary compression stage of the second compression period, so that the driving piston 324 moves to the right side, and the restriction on the second valve core 3151 is released. Under the action of the spring, the second valve core 3151 is disengaged from the second valve body 3152, the second pilot gas path 3153 is disconnected, the control of the two-position four-way gas control valve 3121 is ended, and the original position is restored to wait for the next control. ​

[0090] In some embodiments, the single-driver dual-stage gas supercharging device further comprises a cooler 4, which is designed to effectively manage the heat generated during the compression process, thereby ensuring the stable operation of the device and prolonging its service life. The cooler 4 comprises a first cooling cavity 41, a second cooling cavity 42, a cooling fluid delivery pipeline 43, and a cooling pipeline 44.

[0091] The first cooling cavity 41 and the second cooling cavity 42 are respectively arranged outside the primary compression cavity 11 and the secondary compression cavity 21 to absorb the heat generated during the compression process. A large amount of heat is generated during the gas compression process in the primary compression cavity 11 and the secondary compression cavity 21. If this heat cannot be dissipated in time, it will affect the efficiency of the equipment, and even may cause overheating problems. Therefore, the arrangement of the cooler 4 can ensure smooth compression process while keeping the temperature of each cavity within a reasonable range.

[0092] The two-position four-way gas control valve 3121 and the cooler 4 are connected through the cooling fluid delivery pipeline 43. Cooling fluid (such as cooling liquid or gas) flows into the cooler 4 from the outside, and is delivered to the second cooling cavity 42 through the cooling fluid delivery pipeline 43. The second cooling cavity 42 is responsible for effectively cooling the gas that has passed through the secondary compression cavity 21. When the secondary compression gas flows through the second cooling cavity 42, the cooling fluid absorbs the heat and carries it away and out of the system. In order to further enhance the cooling effect, the second cooling cavity 42 is connected to the first cooling cavity 41 through the cooling pipeline 44. Through the cooling pipeline 44, the cooling fluid circulates between the two cooling cavities, forming a continuous heat exchange system, ensuring that the temperature of the primary compression cavity 11 and the secondary compression cavity 21 can be balanced.​

[0093] The cooler 4 effectively addresses the issue of heat accumulation during compression, ensuring the stability and safety of the system. For example, the cooling fluid can be circulated by a pump or other fluid driving device, ensuring that the cooling effect is not affected during high-load operation. At the same time, the compact structure of the cooler 4 does not occupy too much space, facilitating integration with other components of the supercharging device.

[0094] In addition, the arrangement of the cooler 4 also improves the energy efficiency of the entire gas supercharging system, avoiding efficiency reduction due to overheating. By closely integrating the cooling function with other core components of the compression system, the cooler 4 not only improves the working efficiency of the device, but also prolongs the service life of each component of the device, reduces maintenance costs, and further enhances the reliability and applicability of the system.

[0095] In some embodiments, the cooling pipe 44 is wrapped around the outside of the compressed gas delivery pipe 12, aiming to effectively cool the gas passing through the compressed gas delivery pipe 12. The compressed gas delivery pipe 12 is used to deliver compressed gas processed by the first-stage compressor 12 to the second-stage compressor 2. In this process, the temperature of the compressed gas may increase significantly, which, if not cooled, may affect the efficiency of the entire system or even cause equipment failure.

[0096] To effectively control this temperature rise, the cooling pipe 44 is arranged around the outside of the compressed gas delivery pipe 12, forming a temperature control loop. When the cooling fluid (such as cooling water or gas) flows in the cooling pipe 44, it can absorb and carry away the heat outside the compressed gas delivery pipe 12. Through this heat exchange method, the cooling fluid carries away the heat inside the compressed gas pipe 12, so that the gas inside the pipe remains within a reasonable temperature range, effectively avoiding efficiency reduction or equipment damage caused by overheating.

[0097] The structure and working principle of the cooling pipe 44 enable the system to operate stably in high-pressure and high-temperature environments. The heat exchange effect between the temperature of the cooling fluid and the compressed gas depends on factors such as the material of the cooling pipe 44, the flow rate of the fluid, and the contact area between the cooling pipe and the compressed gas delivery pipe 12. To improve the cooling effect, the cooling pipe 44 can be made of high-thermal-conductivity materials, and the flow rate of the cooling fluid can be precisely controlled to optimize the heat dissipation process.

[0098] The advantages of this embodiment not only lie in its effective cooling of compressed gas, but also in its compact structure. By wrapping the cooling pipe 44 around the outside of the compressed gas delivery pipe 12, it avoids occupying too much space and reduces interference with other components, facilitating the overall integration and installation of the system.

[0099] In some embodiments, the first-stage compressor 1 is provided with an exhaust muffler 13, which is in communication with the first cooling cavity 41 and used for discharging the cooling gas.

[0100] It should be noted that the technical solutions in the various embodiments of the present application can be combined with each other, but the basis for the combination is that a person of ordinary skill in the art can implement it; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that the combination of technical solutions does not exist, i.e., it is not within the protection scope of the present application.

[0101] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A single driver dual stage gas boost device, characterized by, The utility model relates to a kind of compressor, comprising: Primary compressor, which is internally formed with a primary compression chamber, and is provided with a primary compression inlet and a primary compression outlet communicating with the primary compression chamber; Secondary compressor, which is internally formed with a secondary compression chamber, and is provided with a secondary compression inlet and a secondary compression outlet communicating with the secondary compression chamber, and the primary compression outlet is connected with the secondary compression inlet through a compressed gas delivery pipeline; Driver, which comprises a power structure and a driving member internally formed with a driving chamber, and the primary compressor and the secondary compressor are respectively arranged on the two sides of the driving member; The power structure comprises a driving rod, a primary compression piston, a secondary compression piston and a driving piston, the driving rod penetrates the primary compression chamber, the driving chamber and the secondary compression chamber in sequence, the part of the driving rod in the primary compression chamber is fixedly connected with the primary compression piston, the part of the driving rod in the secondary compression chamber is fixedly connected with the secondary compression piston, and the part of the driving rod in the driving chamber is fixedly connected with the driving piston, and the driving piston divides the driving chamber into a primary compression driving chamber and a secondary compression driving chamber; The driver further comprises a valve assembly arranged on the driving member, for delivering driving gas into the primary compression driving chamber and the secondary compression driving chamber.

2. The single driver dual stage gas boost device of claim 1, wherein, The valve assembly comprises a two-position four-way gas control valve and a driving gas interface arranged on the two-position four-way gas control valve, the two-position four-way gas control valve communicates with the primary compression driving chamber, the driving gas interface is used for receiving external driving gas and delivering it into the primary compression driving chamber to make the driving piston perform primary compression.

3. The single driver dual stage gas boost device of claim 2, wherein, The driving member comprises a first driving reversing control member arranged on the inner wall of the secondary compression driving chamber close to the primary compression chamber, the first driving reversing control member is connected with the two-position four-way gas control valve, when the driving piston contacts the first driving reversing control member after primary compression is completed, the first driving reversing control member can control the two-position four-way gas control valve to deliver driving gas into the secondary compression driving chamber.

4. The single driver dual stage gas boost device of claim 2, wherein, The driver further comprises a driving gas delivery pipeline, the two-position four-way gas control valve communicates with the secondary compression driving chamber through the driving gas delivery pipeline, for delivering driving gas into the secondary compression driving chamber to make the driving piston perform secondary compression.

5. The single driver dual stage gas boost device of claim 4, wherein, The driving member comprises a second driving reversing control member arranged on the inner wall of the primary compression driving chamber close to the secondary compression chamber, the second driving reversing control member is connected with the two-position four-way gas control valve, when the driving piston contacts the second driving reversing control member after secondary compression is completed, the second driving reversing control member can control the two-position four-way gas control valve to deliver driving gas into the primary compression driving chamber.

6. The single driver dual stage gas boost device of claim 2, wherein, The utility model further comprises a cooler, which comprises a first cooling chamber, a second cooling chamber, a cooling fluid delivery pipeline and a cooling pipeline; wherein, The first cooling cavity and the second cooling cavity are respectively arranged outside the first-stage compression cavity and the second-stage compression cavity; The two-position four-way air control valve is communicated with the second cooling cavity through a cooling fluid conveying pipeline, and is used for conveying cooling fluid into the second cooling cavity.

7. The single driver dual stage gas boost device of claim 6, wherein, The cooling pipeline is arranged outside the compressed gas conveying pipeline, and is used for cooling the compressed gas in the compressed gas conveying pipeline.

8. The single driver dual stage gas boost device of claim 6, wherein, An exhaust silencer is arranged on the first-stage compressor, and the exhaust silencer is communicated with the first cooling cavity.

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