A gas pressure regulating device

Abstract

This invention relates to a gas pressure regulating device, comprising a housing and a flow regulating structure installed within the housing cavity. The flow regulating structure includes an inlet valve plate, an outlet valve plate, and a turbine. The inlet valve plate has an inlet port, and the outlet valve plate has an outlet port. The turbine has a gas passage inside, and / or the outer surface of the turbine forms a gas passage with the flow regulating passage. During the rotation of the turbine, there are inlet positions where one end of the gas passage corresponds to the inlet valve port and the other end is offset from the outlet valve port and blocked by the outlet valve plate, and outlet positions where one end of the gas passage is offset from the inlet valve port and blocked by the inlet valve plate, and the other end corresponds to the outlet valve port. The gas pressure regulating device also includes a control module, which controls the turbine speed based on the outlet pressure detected by a pressure sensor. This invention can automatically adjust the flow rate and outlet pressure of the gas pressure regulating device, while achieving higher adjustment accuracy.

Description

Technical Field

[0001] This invention relates to the field of pressure regulating equipment, and more particularly to a gas pressure regulating device capable of adjusting flow rate and pressure. Background Technology

[0002] Currently, gas pressure regulating equipment is manufactured with pre-set flow rates and outlet pressures based on the pressure requirements of downstream users. If a user's gas consumption changes, i.e., their gas demand changes, the flow rate and outlet pressure of the regulating equipment need to be adjusted, requiring on-site adjustments by professionals. For example, utility model patent CN208703224U discloses a manually adjustable linear valve. This linear valve includes a valve body, a valve cover on the valve body, and a valve core inside the valve body. The valve body has a fluid inlet and a fluid outlet, and the valve body has a communication port between the fluid inlet and outlet. The valve core seals above the communication port, and the fluid flow rate is adjusted by vertically adjusting the distance between the valve core and the communication port. This type of gas pressure regulating equipment uses manual adjustment and cannot automatically adjust the flow rate based on the user's gas consumption in real time.

[0003] In addition, existing technologies also include gas pressure regulating devices, such as the gas pressure regulator disclosed in invention patent application CN113803474A. This pressure regulator includes a valve body and a pressure regulating structure disposed within the valve body, as well as a control module for controlling the pressure regulating structure. The pressure regulating structure includes a linear actuator vertically placed in the valve body cavity, a valve shaft with its first end connected to the linear actuator, and a valve head connected to the second end of the valve shaft. The control module includes a pressure transmitter, an AD digital converter, and a control computer, with the linear actuator connected to the control computer. In use, the pressure transmitter simultaneously collects inlet and outlet pressure signals. The control computer determines whether to open or close the regulator valve head based on changes in the outlet pressure signal. The linear actuator controls the opening of the regulator valve head in real time, ensuring that the outlet pressure of the regulator always matches the preset target outlet pressure.

[0004] Although the aforementioned gas pressure regulating equipment can adjust the valve opening in real time according to the pressure at the inlet and outlet, the use of a linear actuator to adjust the valve opening makes it difficult to achieve precise flow regulation due to the significant impact of the valve position movement on the flow rate, resulting in low regulation accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a gas pressure regulating device to solve the technical problem of low flow regulation accuracy in existing pressure regulating devices.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0007] A gas pressure regulating device includes a housing with an inner cavity, an inlet, and an outlet. The inner cavity includes a first cavity and a second cavity, which are independent of each other. The first cavity communicates with the inlet, and the second cavity communicates with the outlet. A flow regulating structure is disposed within the inner cavity. The gas pressure regulating device also includes a pressure sensor for detecting the outlet pressure. The inner cavity further includes a flow regulating channel located between the first and second cavities. The flow regulating structure is assembled within the flow regulating channel and includes an inlet valve plate, an outlet valve plate, and a turbine. The inlet valve plate and the outlet valve plate are respectively disposed at two ends of the flow regulating channel. The inlet valve plate has an inlet valve port, and the outlet valve plate has an outlet valve port. The turbine is rotatably disposed within the flow regulating channel and located between the inlet valve plate and the outlet valve plate. Between the plates, the turbine is connected to a drive device, and the turbine is coaxially arranged with the flow regulation channel; the turbine has a gas channel inside, and / or the outer surface of the turbine and the flow regulation channel form a gas channel; during the rotation of the turbine, there are inlet positions where one end of the gas channel corresponds to the inlet valve port and the other end is offset from the outlet valve port and blocked by the outlet valve plate, and outlet positions where one end of the gas channel is offset from the inlet valve port and blocked by the inlet valve plate, and the other end corresponds to the outlet valve port; the gas pressure regulating device also includes a control module, which is connected to the pressure sensor and the drive device respectively. The control module controls the speed of the turbine according to the outlet pressure detected by the pressure sensor, so as to regulate the flow rate and outlet pressure of the gas pressure regulating device.

[0008] The beneficial effects are as follows: This invention divides the inner cavity of the housing into two independent parts and sets a flow regulation channel between the two parts. A turbine is rotated within the flow regulation channel, and an inlet valve plate and an outlet valve plate are fixedly installed. During the rotation of the turbine, the gas passage inside alternately corresponds with the inlet valve port on the inlet valve plate and the outlet valve port on the outlet valve plate, thereby realizing the flow of gas from the inlet to the outlet. Simultaneously, the control module adjusts the turbine speed in real time based on the outlet pressure value detected by the pressure sensor, thereby achieving real-time regulation of the gas pressure regulating valve's flow rate and outlet pressure value. The gas pressure regulating device of this invention utilizes the rotation of the turbine to achieve gas flow, and controls the flow rate and outlet pressure by controlling the turbine speed. This regulation method offers higher precision compared to the existing method of adjusting the valve opening. Furthermore, compared to manual adjustment, this invention enables automatic real-time adjustment, reducing labor costs and making it more convenient to use.

[0009] As a further improvement, the intake valve port is a fan-shaped annular shape, the intake valve ports are radially distributed along the center of the intake valve plate, and the portion of the intake valve plate between two adjacent intake valve ports is used to block the gas passage; and / or the exhaust valve port is a fan-shaped annular shape, the exhaust valve ports are radially distributed along the center of the exhaust valve plate, and the portion of the exhaust valve plate between two adjacent exhaust valve ports is used to block the gas passage.

[0010] The beneficial effect is that by setting the inlet and / or outlet valve ports as fan-shaped rings, the total area of ​​the inlet valve ports can be increased compared to the previous configuration, thereby allowing the gas to enter the gas passage and flow out quickly.

[0011] As a further improvement, the gas passage has a fan-shaped cross-section and is radially distributed around the turbine's rotation axis.

[0012] The beneficial effect is that by uniformly setting the intake valve plate, exhaust valve plate, and turbine channels as fan-shaped annular structures, the cross-sectional area through which gas passes can be increased, thereby improving the efficiency of the turbine in delivering gas.

[0013] As a further improvement, the intake valve plate and the exhaust valve plate have the same structure.

[0014] The benefits are: simplified structure, improved versatility, and reduced manufacturing and maintenance costs.

[0015] As a further improvement, the housing includes a cylindrical body with its axis extending vertically and a partition structure disposed within the cylindrical body. The air outlet and air inlet are respectively disposed on the radial sides of the cylindrical body. The partition structure divides the internal space of the cylindrical body into a first cavity and a second cavity. The flow regulating channel is disposed within the partition structure and is coaxially arranged with the cylindrical body. The turbine is coaxial with the flow regulating channel. One end of the cylindrical body is open and the other end is closed, so that the air inlet valve plate, air outlet valve plate, and turbine can be installed into the flow regulating channel from the open end of the cylindrical body. A sealing end cap is installed at the open end of the cylindrical body.

[0016] The beneficial effects are: it makes the internal space of the shell compact, reduces the size of the shell, and facilitates the installation of internal components.

[0017] As a further improvement, the partition structure includes a first partition and a second partition that are radially offset along the cylinder. The first partition extends downward from the upper end of the cylinder and forms the first cavity with the inner wall of the cylinder. The second partition extends upward from the lower end of the cylinder and forms the second cavity with the inner wall of the cylinder. The lower end of the first partition is spaced apart from the lower end of the cylinder, and the upper end of the second partition is spaced apart from the upper end of the cylinder. The overlapping portions of the first partition and the second partition in the vertical direction form the flow regulating channel.

[0018] The beneficial effects are: by forming the first and second cavities through the first and second partitions, a flow regulation channel is formed, the internal structure of the shell is relatively simple, and the internal space utilization rate of the shell is high.

[0019] As a further improvement, the first partition has an arc surface facing the air inlet and gradually moving away from the air inlet from top to bottom; the second partition has an arc surface facing the air outlet and gradually moving away from the air outlet from bottom to top.

[0020] The beneficial effects are: it can guide the gas to a certain extent, while improving the structural strength of the first and second partitions. In order to save internal space of the shell, the air inlet and outlet are connected to the flow regulation channel by setting arc surfaces on the first and second partitions, thereby reducing the diameter of the cylinder.

[0021] As a further improvement, the drive device is fixed on the end cover, and the output shaft of the drive device is connected to a drive shaft coaxial with the turbine. The drive shaft passes through the center of the outlet valve plate and the inlet valve plate in the vertical direction. The drive shaft is fixedly connected to the turbine and rotates with the outlet valve plate and the inlet valve plate. The end of the drive shaft away from the drive device is rotatably installed at the closed end of the cylinder.

[0022] The beneficial effect is that, in order to improve the installation stability of the turbine, one end of the drive shaft is fixed to the drive unit, and the other end is rotatably installed at the closed end of the housing.

[0023] As a further improvement, the outer peripheral surface of the drive shaft is sealed to the exhaust valve plate and the intake valve plate.

[0024] The beneficial effects are: preventing gas from passing through the gap between the drive shaft and the turbine, allowing gas to pass only through the gas passage inside the turbine, thus improving sealing performance.

[0025] As a further improvement, the housing is a casting.

[0026] The beneficial effect is that it facilitates mass production. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the gas pressure regulating device of the present invention (the internal structure is shown in the central area);

[0028] Figure 2 This is a schematic diagram of the intake valve plate in Embodiment 1 of the gas pressure regulating device of the present invention;

[0029] Figure 3 This is a schematic diagram of the gas outlet valve plate in Embodiment 1 of the gas pressure regulating device of the present invention;

[0030] Figure 4This is a schematic cross-sectional view of the turbine in Embodiment 1 of the gas pressure regulating device of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of the housing in Embodiment 1 of the gas pressure regulating device of the present invention;

[0032] Figure 6 for Figure 5 Top view;

[0033] Figure 7 for Figure 5 Sectional view along line AA;

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Housing; 2. End cap; 3. Connecting flange; 4. Outlet valve plate; 41. Outlet valve port; 5. Inlet valve plate; 51. Inlet valve port; 6. Turbine; 61. Gas passage; 7. Drive shaft; 8. Drive unit; 9. Rear end pressure tap; 10. Control module; 11. First cavity; 12. Second cavity; 13. Flow regulation channel; 14. First partition; 15. Second partition. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be 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 for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the process or method that includes said element.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the main body, or it can be separately arranged from the main body and connected to the main body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0041] The present invention will be further described in detail below with reference to the embodiments.

[0042] A specific embodiment 1 of the gas pressure regulating device provided by the present invention: as follows Figure 1-7As shown, the gas pressure regulating device includes an outer housing 1, which has an inner cavity, an inlet, and an outlet. Here, the side of the gas pressure regulating device closest to the inlet is defined as the front end, and the side closest to the outlet is defined as the rear end, which is also the outlet end. A flow regulating structure is installed in the inner cavity of the housing 1, which can change the gas flow rate and the downstream pressure value per unit time. The gas pressure regulating device also includes a control module 10 and a pressure sensor connected to the control module 10 for detecting the downstream pressure. The pressure sensor transmits the detected downstream pressure signal to the control module 10. The control module 10 determines whether the pressure value detected by the pressure sensor matches the set pressure value. Based on the detected pressure value, the control module 10 controls the flow rate of the gas pressure regulating device in real time. If the pressure is less than the set pressure value, the flow rate of the gas pressure regulating device is increased; otherwise, the flow rate is decreased.

[0043] In this embodiment, the housing 1 includes a cylinder whose axis extends in the vertical direction. The air inlet and the air outlet are respectively arranged on opposite radial sides of the cylinder. In use, the gas enters the housing 1 in the horizontal direction and flows out of the housing 1 in the horizontal direction. In order to facilitate the connection of the gas pressure regulating device to the gas pipeline, the outer wall of the cylinder is provided with connecting flanges 3 at the air inlet and the air outlet, respectively. The connecting flanges 3 are used to connect with the gas pipeline on the corresponding side.

[0044] The cylinder is equipped with a partition structure to divide the inner cavity of the shell 1 into two independent chambers: a first chamber 11 and a second chamber 12. The first chamber 11 is connected to the air inlet, and the second chamber 12 is connected to the air outlet. The inner cavity also includes a flow regulating channel 13 located between the first chamber 11 and the second chamber 12. In this embodiment, the flow regulating channel 13 is coaxially arranged with the cylinder and is located within the partition structure. The flow regulating structure is arranged in the flow regulating channel 13 and includes an inlet valve plate 5, an outlet valve plate 4, and a turbine 6 coaxially arranged in the flow regulating channel 13. The turbine 6 is rotatably disposed within the flow regulating channel 13 and is connected to a drive device 8. In this embodiment, the drive device 8 is a speed-regulating motor with an adjustable output shaft speed, and the drive device 8 provides driving force to the turbine 6. The intake valve 5 and the outlet valve 4 are fixedly installed at the two ends of the flow regulating channel 13, respectively. The turbine 6 is located between the intake valve 5 and the outlet valve 4, with the intake valve 5 and the outlet valve 4 respectively closely attached to the corresponding end faces of the turbine 6. To facilitate the installation of components inside the housing 1, one end of the cylinder is open and the other end is closed. In this way, the intake valve 5, the outlet valve 4, and the turbine 6 can be installed into the flow regulating channel 13 from the open end of the cylinder, and then the end cap 2 is fixed at the open end, thereby achieving a seal inside the housing 1. In this embodiment, the upper end of the cylinder is open and the lower end is closed, and the end cap 2 is fixed at the upper opening of the cylinder. The intake valve 5 is fixed at the lower end of the flow regulating channel 13, and the outlet valve 4 is fixed at the upper end of the flow regulating channel 13.

[0045] An intake valve plate 5 has an intake port 51, and an exhaust valve plate 4 has an exhaust port 41. The turbine 6 has a gas passage 61 inside. In this embodiment, the exhaust valve plate 4 and the intake valve plate 5 have the same structure. Both the intake valve port 51 and the exhaust valve port 41 are fan-shaped annular. The intake valve ports 51 are radially distributed along the center of the intake valve plate 5, and the portion of the intake valve plate 5 between two adjacent intake valve ports 51 is used to block the gas passage 61. Similarly, the exhaust valve ports 41 are radially distributed along the center of the exhaust valve plate 4, and the portion of the exhaust valve plate 4 between two adjacent exhaust valve ports 41 is used to block the gas passage 61. The cross-sectional shape of the turbine 6 perpendicular to the rotation axis is basically the same as that of the intake valve plate 5 and the exhaust valve plate 4. The cross-sectional shape of the gas passage 61 is the same as that of the intake valve port 51 and the exhaust valve port 41, and the gas passage 61 is radially distributed around the rotation axis of the turbine 6.

[0046] The turbine 6 has an intake position and an outlet position along its rotation path. When the turbine 6 is in the intake position, one end of the gas passage 61 near the intake valve plate 5 corresponds to the intake valve port 51, and the other end is offset from the outlet valve port 41 and blocked by the outlet valve plate 4. At this time, the gas passage 61 inside the turbine 6 is connected to the first chamber 11, and the gas enters the gas passage 61 from the first chamber 11. When the turbine 6 rotates a certain angle from the intake position to the outlet position, the one end of the gas passage 61 near the intake valve plate 5 is offset from the intake valve port 51 and blocked by the intake valve plate 5, and the other end corresponds to the outlet valve port 41. The gas passage 61 is connected to the second chamber 12. Since the pressure at the front end is usually lower than the pressure at the rear end, the gas entering the gas passage 61 from the first chamber 11 will be released into the second chamber 12 and flow out from the outlet. When the front-end pressure is greater than the rear-end pressure and the volume of the gas passage 61 inside the turbine 6 remains unchanged, the greater the rotational speed of the turbine 6, the more gas flows from the first chamber 11 into the second chamber 12 per unit time. Thus, by adjusting the rotational speed of the turbine 6, the flow rate of the gas pressure regulating device can be changed, thereby changing the magnitude of the rear-end pressure value.

[0047] The gas pressure regulating device also includes a control module 10, which includes a controller and a control panel. The display screen on the control panel shows the current back-end pressure value, the current set pressure value, and the current gas flow rate through the gas pressure regulating device per unit time. The control module 10 is fixed to the top surface of the end cover 2. One side of the end cover 2 has a back-end pressure tap 9, which is connected to the second chamber 12. Since the pressure of the second chamber 12 and the back-end outlet is the same, the pressure sensor can detect the back-end pressure value through the back-end pressure tap 9. The control module 10 is connected to the pressure sensor and the drive device 8 respectively. In use, the set pressure value can be directly input on the control panel. The gas pressure regulating device adjusts the speed of the turbine 6 in real time according to the collected back-end pressure value, thereby adjusting the flow rate and back-end pressure value of the gas pressure regulating device. It should be noted that in order to ensure the user's normal gas demand, the back-end pressure value usually needs to be maintained at the set pressure value. When the back-end pressure value is less than the set pressure value, it means that the back-end gas supply is insufficient to meet the user's needs. When the back-end pressure value is greater than the set pressure value, it will cause waste to some extent. In this embodiment, the control module 10 determines whether the downstream pressure value detected by the pressure sensor is consistent with the set pressure value, and then determines whether the speed of the turbine 6 needs to be adjusted. When the downstream pressure is less than the set pressure value, the control module 10 controls the speed of the output shaft of the drive device 8 to increase the speed, thereby increasing the speed of the turbine 6, increasing the gas flow rate through the gas pressure regulating device, and gradually increasing the downstream pressure until it is consistent with the set pressure value. In addition, since the gas consumption required by users varies at different times, in this embodiment, the control module 10 has different set pressure values ​​at different times. This allows gas to be supplied to the downstream according to the user's gas demand at different times, satisfying user needs while allocating gas consumption as reasonably as possible.

[0048] The partition structure in this embodiment includes a first partition 14 and a second partition 15 offset radially along the cylinder. Both the first partition 14 and the second partition 15 are tile-shaped structures with a semi-circular arc cross-section perpendicular to the cylinder axis. The first partition 14 extends downward from the upper end of the cylinder and forms the first cavity 11 with the inner wall of the cylinder. The second partition 15 extends upward from the lower end of the cylinder and forms the second cavity 12 with the inner wall of the cylinder. The lower end of the first partition 14 is spaced apart from the lower end of the cylinder, and the upper end of the second partition 15 is spaced apart from the upper end of the cylinder. The overlapping portions of the first partition 14 and the second partition 15 in the vertical direction form the flow regulating channel 13. The first partition 14 has an arc surface facing the air inlet and gradually moving away from the air inlet from top to bottom; the second partition 15 has an arc surface facing the air outlet and gradually moving away from the air outlet from bottom to top.

[0049] In this embodiment, the drive device 8 is fixed on the end cover 2. The output shaft of the drive device 8 is connected to a drive shaft 7 coaxial with the turbine 6. The drive shaft 7 passes through the center of the outlet valve plate 4 and the inlet valve plate 5 in the vertical direction. The drive shaft 7 is fixedly connected to the turbine 6 and rotates with the outlet valve plate 4 and the inlet valve plate 5. The outer circumferential surface of the drive shaft 7 is sealed with the outlet valve plate 4 and the inlet valve plate 5. The end of the drive shaft 7 away from the drive device 8 is rotatably installed at the closed end of the cylinder.

[0050] In use, the gas pressure regulating device of this invention is connected to the gas pipeline via connecting flanges 3 arranged on opposite radial sides of the cylinder. By inputting a set pressure value on the control panel, the control module 10 can determine in real time whether the downstream pressure value is consistent with the set pressure value based on the downstream pressure value detected by the pressure sensor, and thus determine whether the speed of the turbine 6 needs to be adjusted. When the downstream pressure is less than the set pressure value, the control module 10 will control the speed of the output shaft of the drive device 8, increasing the speed, which in turn increases the speed of the turbine 6, thereby increasing the flow rate of the gas pressure regulating device and gradually increasing the downstream pressure until it is consistent with the set pressure value.

[0051] The specific embodiment 2 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that: in embodiment 1, the inlet valve plate 5 and the outlet valve plate 4 have the same structure, and both the inlet valve port 51 and the outlet valve port 41 are fan-shaped. In this embodiment, the inlet valve plate 5 and the outlet valve plate 4 have different structures; in this case, one of the inlet valve port 51 and the outlet valve port 41 is fan-shaped, and the other is circular or oblong.

[0052] The specific embodiment 3 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that the cross-sectional shape of the gas channel 61 can be circular or oblong.

[0053] The specific embodiment 4 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that: the outer surface of the turbine 6 and the flow regulating channel 13 form a gas channel 61. For example, a vertically extending groove is provided on the side wall of the flow regulating channel 13, and the groove and the outer circumferential surface of the turbine 6 form a vertically extending gas channel 61. Alternatively, a vertically extending groove is provided on the outer circumferential surface of the turbine 6, and the inner wall of the flow regulating channel 13 and the groove form a gas channel 61.

[0054] The specific embodiment 5 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that: in embodiment 1, the flow regulating channel 13 is coaxial with the cylinder, and the turbine 6 is coaxial with the flow regulating channel 13.

[0055] The specific embodiment 6 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that: in embodiment 1, the two parts of the partition structure are identical and arranged symmetrically around the center of the flow regulating channel 13. In this embodiment, the partition structure can be the same as that in the utility model patent with authorization announcement number CN208703224U cited in the background art, where the flow regulating channel 13 is located inside the partition structure, and the partition structure is not a centrally symmetrical structure.

[0056] The specific embodiment 7 of the gas pressure regulating device provided by the present invention differs from embodiment 1 mainly in that: the drive shaft 7 below the turbine 6 does not penetrate the intake valve plate 5. If a blind hole is opened in the center of the intake valve plate 5, the drive shaft 7 is rotatably installed in the blind hole in the center of the intake valve plate 5.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas pressure regulating device, comprising a housing (1) having an inner cavity, a gas inlet and a gas outlet, the inner cavity comprising a first cavity (11) and a second cavity (12) which are independent of each other, the first cavity (11) being in communication with the gas inlet and the second cavity (12) being in communication with the gas outlet, a flow regulating structure being arranged in the inner cavity, and a pressure sensor for detecting the pressure at the gas outlet; characterized in that, The inner cavity further comprises a flow regulating channel (13) between the first cavity (11) and the second cavity (12), a flow regulating structure is arranged in the flow regulating channel (13), the flow regulating structure comprises an air inlet valve plate (5), an air outlet valve plate (4) and a turbine (6), the air inlet valve plate (5) and the air outlet valve plate (4) are arranged at two ports of the flow regulating channel (13) respectively, the air inlet valve plate (5) is provided with an air inlet valve port (51), the air outlet valve plate (4) is provided with an air outlet valve port (41), the turbine (6) is rotatably arranged in the flow regulating channel (13) and located between the air inlet valve plate (5) and the air outlet valve plate (4), the turbine (6) is connected with a driving device (8), and the turbine (6) is coaxially arranged with the flow regulating channel (13); the turbine (6) has a gas channel (61) in the inside, and / or the turbine (6) has the gas channel (61) between the outer side and the flow regulating channel (13); during rotation of the turbine (6), there is an air inlet position in which one end of the gas channel (61) corresponds to the air inlet valve port (51) and the other end is staggered with the air outlet valve port (41) and is blocked by the air outlet valve plate (4), and there is an air outlet position in which one end of the gas channel (61) is staggered with the air inlet valve port (51) and is blocked by the air inlet valve plate (5) and the other end corresponds to the air outlet valve port (41); the gas pressure regulating equipment further comprises a control module (10), the control module (10) is connected with the pressure sensor and the driving device (8) respectively, and the control module (10) controls the rotating speed of the turbine (6) according to the air outlet end pressure detected by the pressure sensor, so as to adjust the flow and the air outlet end pressure of the gas pressure regulating equipment.

2. The gas pressure regulating device according to claim 1, characterized by The air inlet valve port (51) is a fan ring, the air inlet valve port (51) is radially distributed along the center of the air inlet valve plate (5), the part of the air inlet valve plate (5) between adjacent two air inlet valve ports (51) is used for blocking the gas channel (61), and / or the air outlet valve port (41) is a fan ring, the air outlet valve port (41) is radially distributed along the center of the air outlet valve plate (4), and the part of the air outlet valve plate (4) between adjacent two air outlet valve ports (41) is used for blocking the gas channel (61).

3. The gas pressure regulating device according to claim 2, characterized by The cross-sectional shape of the gas channel (61) is a fan ring, and the gas channel (61) is radially distributed around the rotating axis of the turbine (6).

4. The gas pressure regulating device according to claim 2, characterized by The air inlet valve plate (5) and the air outlet valve plate (4) are the same in structure.

5. The gas pressure regulating device according to any one of claims 1 to 4, characterized in that The shell (1) comprises a cylinder body with axis extending in up-down direction and a partition structure arranged in the cylinder body, the air outlet and the air inlet are arranged on the two sides of the cylinder body in radial direction, the partition structure separates the internal space of the cylinder body into a first cavity (11) and a second cavity (12), the flow regulating channel (13) is arranged in the partition structure and coaxially arranged with the cylinder body, the turbine (6) is coaxial with the flow regulating channel (13), one end of the cylinder body is open and the other end is closed, so that the air inlet valve plate (5), the air outlet valve plate (4) and the turbine (6) can be loaded into the flow regulating channel (13) from the open end of the cylinder body, and the sealing end cover (2) is arranged at the open end of the cylinder body.

6. The gas pressure regulating device according to claim 5, characterized by The partition structure comprises a first partition (14) and a second partition (15) staggered in radial direction of the cylinder body, the first partition (14) extends downward from the upper end of the cylinder body and surrounds the first cavity (11) with the inner wall of the cylinder body, the second partition (15) extends upward from the lower end of the cylinder body and surrounds the second cavity (12) with the inner wall of the cylinder body, the lower end of the first partition (14) is spaced from the lower end of the cylinder body, the upper end of the second partition (15) is spaced from the upper end of the cylinder body, and the overlapping part of the first partition (14) and the second partition (15) in up-down direction forms the flow regulating channel (13).

7. The gas pressure regulating device according to claim 6, characterized by The first partition (14) has an arc surface facing the air inlet and gradually away from the air inlet from top to bottom, and the second partition (15) has an arc surface facing the air outlet and gradually away from the air outlet from bottom to top.

8. The gas pressure regulating device according to claim 5, characterized by The driving device (8) is fixed on the end cover (2), the output shaft of the driving device (8) is connected with the driving shaft (7) coaxial with the turbine (6), the driving shaft (7) passes through the center of the air outlet valve plate (4) and the air inlet valve plate (5) in up-down direction, the driving shaft (7) is fixedly connected with the turbine (6) and rotationally matched with the air outlet valve plate (4) and the air inlet valve plate (5), and the end of the driving shaft (7) away from the driving device (8) is rotationally installed at the closed end of the cylinder body.

9. The gas pressure regulating device according to claim 8, characterized by The outer circumferential surface of the driving shaft (7) is sealingly matched with the air outlet valve plate (4) and the air inlet valve plate (5).

10. The gas pressure regulating device according to claim 5, characterized by The shell (1) is a cast part.

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