High-precision adjusting device capable of automatically stabilizing pressure

Abstract

The utility model discloses a high-precision adjusting device capable of automatically stabilizing pressure. The high-precision adjusting device capable of automatically stabilizing the pressure comprises a closed cabin, a high-pressure source and a low-pressure source. The high-pressure source is connected with the closed cabin through a closed pipeline and is used for increasing the pressure of the closed cabin; the low-pressure source is connected with the closed cabin through a closed pipeline and used for reducing the pressure of the closed cabin. According to the high-precision adjusting device capable of automatically stabilizing the pressure, the high-pressure source and the low-pressure source are used at the same time, so that the pressure in the closed cabin can be finely adjusted in real time. The high pressure source is used to increase the in-cabin pressure and the low pressure source is used to reduce the in-cabin pressure. The two-way adjusting mechanism allows smooth transition among different working conditions, and the closed cabin does not need to be completely emptied or refilled, so that the continuity of an experiment can be ensured, and the accuracy of data can be improved.

Description

Technical Field

[0001] The utility model relates to the field of pressure regulating devices, in particular to a high-precision regulating device with automatic and stable pressure. Background Art

[0002] In the fields of aerospace, navigation technology, submersible development, and chemical reactors, the application of closed chambers is becoming more and more widespread. These closed chambers usually require precise control and adjustment of the internal pressure environment during experiments or operations. In related technologies, when the pressure environment in the closed chamber needs to be changed, it is often necessary to end the current working condition and reset the pressure, which is not only time-consuming and labor-intensive, but also may affect the continuity of the experiment and the accuracy of the data. Utility Model Content

[0003] The utility model provides a high-precision regulating device with automatic and stable pressure.

[0004] The high-precision regulating device for automatically stabilizing pressure in the embodiment of the utility model comprises:

[0005] Closed cabin;

[0006] A high-pressure source, the high-pressure source is connected to the sealed cabin through a sealed pipeline, and the high-pressure source is used to increase the pressure of the sealed cabin;

[0007] A low-pressure source is connected to the sealed cabin through a sealed pipeline, and the low-pressure source is used to reduce the pressure of the sealed cabin.

[0008] In the high-precision pressure regulating device with automatic stabilization of the embodiment of the utility model, the pressure in the closed cabin can be fine-tuned in real time by using a high-pressure source and a low-pressure source at the same time. The high-pressure source is used to increase the pressure in the cabin, while the low-pressure source is used to reduce the pressure in the cabin. This two-way regulation mechanism allows a smooth transition between different working conditions without completely emptying or refilling the closed cabin, thereby ensuring the continuity of the experiment and improving the accuracy of the data.

[0009] In certain embodiments, the closed pipeline further includes a first main flow path and a first bypass flow path, the first main flow path connects the low-pressure source and the closed cabin, and both ends of the first bypass flow path are connected to the first main flow path; the high-precision regulating device with automatic pressure stabilization further includes a first large flow valve and a first fast response valve, the first large flow valve is arranged on the first main flow path, and the first fast response valve is arranged on the first bypass flow path and is connected in parallel with the first large flow valve.

[0010] In some embodiments, the high-precision regulating device for automatic pressure stabilization also includes a control center, which includes a first controller connected to the first large flow valve, and the first controller is used to control the opening of the first large flow valve.

[0011] In some embodiments, the high-precision regulating device for automatic pressure stabilization also includes a control center, and the control center also includes a second controller, the second controller is connected to the first quick response valve, and the second controller is used to control the opening of the first quick response valve.

[0012] In some embodiments, the high-precision regulating device for automatic pressure stabilization also includes a pressure sensor and a control center, the pressure sensor is connected to the control center, the control center is used to control the opening of the first large flow valve and the opening of the first fast response valve, and the pressure sensor is used to detect the pressure value in the closed cabin and transmit the pressure value to the control center.

[0013] In certain embodiments, the closed pipeline further includes a second main flow path and a second bypass flow path, the second main flow path connects the high-pressure source and the closed cabin, and both ends of the second bypass flow path are connected to the second main flow path; the high-precision regulating device with automatic pressure stabilization further includes a second large flow valve and a second fast response valve, the second large flow valve is arranged on the second main flow path, and the second fast response valve is arranged on the second bypass flow path and is connected in parallel with the second large flow valve.

[0014] In some embodiments, the high-precision regulating device for automatic pressure stabilization also includes a control center, which includes a third controller, and the third controller is connected to the second large flow valve, and the third controller is used to control the opening of the second large flow valve.

[0015] In some embodiments, the high-precision regulating device for automatic pressure stabilization also includes a control center, and the control center also includes a fourth controller, and the fourth controller is connected to the second fast response valve, and the fourth controller is used to control the opening of the second fast response valve.

[0016] In certain embodiments, the high-precision regulating device for automatic pressure stabilization also includes a pressure sensor and a control center, wherein the pressure sensor is connected to the control center, and the control center is used to control the opening of the second large flow valve and the opening of the second fast response valve, and the pressure sensor is used to detect the pressure value in the closed cabin and transmit the pressure value to the control center.

[0017] In some embodiments, the high-precision regulating device with automatic pressure stabilization also includes a control interface, which is connected to the control center. The control interface is used to set the target pressure and transmit the target pressure to the control center so that the control center controls the flow of the closed pipeline.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a high-precision pressure regulating device with automatic stabilization according to an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] A high-precision regulating device 100 with automatic pressure stabilization; a sealed cabin 10; a high-pressure source 20; a sealed pipeline 30; a low-pressure source 40; a first main flow path 31; a first bypass flow path 32; a first large flow valve 50; a first fast response valve 60; a control center 70; a first controller 71; a second controller 72; a pressure sensor 80; a second main flow path 33; a second bypass flow path 34; a second large flow valve 90; a second fast response valve 101; a third controller 73; a fourth controller 74; a control interface 102. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0028] See also Figure 1 The high-precision pressure regulating device 100 of the embodiment of the utility model is automatically stable, and the high-precision pressure regulating device 100 of the embodiment of the utility model comprises a closed cabin 10, a high-pressure source 20 and a low-pressure source 40. The high-pressure source 20 is connected to the closed cabin 10 through a closed pipeline 30, and the high-pressure source 20 is used to increase the pressure of the closed cabin 10; the low-pressure source 40 is connected to the closed cabin 10 through a closed pipeline 30, and the low-pressure source 40 is used to reduce the pressure of the closed cabin 10.

[0029] In the high-precision pressure regulating device 100 with automatic stabilization of the embodiment of the utility model, by using the high-pressure source 20 and the low-pressure source 40 at the same time, the pressure in the sealed cabin 10 can be fine-tuned in real time. The high-pressure source 20 is used to increase the pressure in the cabin, while the low-pressure source 40 is used to reduce the pressure in the cabin. This two-way adjustment mechanism allows a smooth transition between different working conditions without completely emptying or refilling the sealed cabin 10, thereby ensuring the continuity of the experiment and improving the accuracy of the data.

[0030] Specifically, the closed cabin 10 is a closed space for accommodating a working medium. The closed cabin 10 can be used to provide an environment in which the pressure can be controlled and adjusted. The closed cabin 10 can reach a predetermined pressure environment by increasing or decreasing the pressure. The working medium can be a fluid such as air or water. The closed cabin 10 can be a large experimental closed cabin 10. The closed cabin 10 can be used for pressure tests such as closed wind tunnels. The specific type, specification, model, size, etc. are set according to actual needs. The closed cabin 10 itself can have a pressure detection function. The high-pressure source 20 and the low-pressure source 40 can be connected on both sides of the closed cabin 10, and the closed pipeline 30 can be arranged on the outside of the closed cabin 10.

[0031] The high-pressure source 20 can increase the pressure in the sealed cabin 10 by injecting high-pressure fluid into the sealed cabin 10. The high-pressure source 20 can be a compressor, a high-pressure gas tank, etc., and the specific type, specification, model, size, etc. are set according to actual needs. For example, the high-pressure source 20 can be a compressor, which can provide high-pressure gas to increase the pressure in the sealed cabin 10.

[0032] The low-pressure source 40 can reduce the pressure in the sealed cabin 10 by providing low-pressure fluid, or reduce the pressure in the sealed cabin 10 by suction. The low-pressure source 40 can be a vacuum pump, a low-pressure gas tank, etc., and the specific type, specification, model, size, etc. are set according to actual needs. For example, the low-pressure source 40 can be a vacuum pump, which is used to extract air or liquid in the sealed cabin 10, thereby reducing the pressure of the sealed cabin 10.

[0033] The closed pipeline 30 can be a passage between the high pressure source 20, the low pressure source 40 and the closed cabin 10, and the closed pipeline 30 can allow the working medium to flow safely and controllably. The cross-sectional shape of the closed pipeline 30 can be circular, and the closed pipeline 30 can be made of metal, plastic and other materials. The cross-sectional shape, size and material of the closed pipeline 30 can be set according to actual needs.

[0034] See also Figure 1 In some embodiments, the closed pipeline 30 also includes a first main flow path 31 and a first bypass flow path 32, the first main flow path 31 is connected to the low-pressure source 40 and the closed cabin 10, and both ends of the first bypass flow path 32 are connected to the first main flow path 31; the high-precision regulating device 100 with automatic pressure stability also includes a first large flow valve 50 and a first quick response valve 60, the first large flow valve 50 is arranged on the first main flow path 31, and the first quick response valve 60 is arranged on the first bypass flow path 32 and is connected in parallel with the first large flow valve 50.

[0035] In this way, by setting the first large flow valve 50 on the first main flow path 31, the pressure in the sealed cabin 10 can be quickly reduced to achieve rapid pressure regulation. The first large flow valve 50 is arranged in parallel with the first fast response valve 60, so that on the basis of rapid pressure regulation, the first fast response valve 60 can reduce the pressure in the sealed cabin 10 with high accuracy, thereby achieving high-precision pressure regulation.

[0036] Specifically, the first main flow path 31 is a main channel of the closed pipeline 30, connecting the low-pressure source 40 and the closed cabin 10, and is responsible for conveying low-pressure fluid to reduce the pressure in the closed cabin 10. The first bypass flow path 32 is an auxiliary channel branched from the first main flow path 31, and both ends are connected to the first main flow path 31, providing an additional path. The diameter ratio and flow ratio of the first main flow path 31 and the first bypass flow path 32 can be set according to actual needs.

[0037] The first large flow valve 50 can be arranged outside the sealed cabin 10. The first large flow valve 50 is used to control the fluid flow from the low pressure source 40 to the sealed cabin 10, so as to achieve rapid pressure regulation. The first large flow valve 50 can be a large butterfly valve, a ball valve, etc., and the specific type, specification, model, size, etc. are set according to actual needs. The first large flow valve 50 can be electrically controlled or manually controlled.

[0038] The first quick response valve 60 can be arranged on the outside of the closed cabin 10, and the first quick response valve 60 can be a high-precision valve. The first quick response valve 60 is used to control the fluid flow from the low-pressure source 40 to the closed cabin 10. The first quick response valve 60 has a short response time and high adjustment accuracy. The first quick response valve 60 can be a high-frequency electromagnetic fast-response valve, an electric hydraulic valve, or other valves with a response time of less than 0.1s. The specific type, specification, model, size, etc. are set according to actual needs. The first quick response valve 60 can be electrically controlled or manually controlled.

[0039] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a control center 70, and the control center 70 includes a first controller 71. The first controller 71 is connected to the first large flow valve 50, and the first controller 71 is used to control the opening of the first large flow valve 50.

[0040] In this way, the first controller 71 can automatically control the opening of the first large flow valve 50, thereby realizing rapid adjustment of the pressure in the closed cabin 10, so that the pressure in the closed cabin 10 can be reduced at a faster rate. This process does not require human intervention, thereby improving the degree of automation of adjusting the pressure of the closed cabin 10 through the first large flow valve 50.

[0041] Specifically, the control center 70 can be arranged outside the sealed cabin 10, and the control center 70 can generate a control signal. The control method adopted by the control center 70 can be a PID (Proportional Integral Derivative) method, or it can be determined according to specific needs. The control center 70 can communicate with the first large flow valve 50 through the first controller 71 to control the opening of the first large flow valve 50. The first controller 71 can be electrically connected or wirelessly connected to the first large flow valve 50. For example, the first controller 71 can control the opening of the first large flow valve 50 through an electrical signal, thereby controlling the flow of the fluid flowing through the first large flow valve 50.

[0042] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a control center 70, and the control center 70 also includes a second controller 72, which is connected to the first quick response valve 60, and the second controller 72 is used to control the opening of the first quick response valve 60.

[0043] In this way, the second controller 72 can automatically control the opening of the first quick response valve 60, thereby achieving high-precision regulation of the pressure in the closed cabin 10, so that the pressure in the closed cabin 10 can be reduced with higher precision. This process does not require human intervention, thereby improving the degree of automation of regulating the pressure of the closed cabin 10 through the first quick response valve 60.

[0044] Specifically, the second controller 72 can be set on the outside of the closed cabin 10, and the second controller 72 can be electrically or wirelessly connected to the first quick response valve 60. For example, the second controller 72 can control the opening of the first quick response valve 60 through an electrical signal, thereby controlling the flow rate of the fluid flowing through the first quick response valve 60.

[0045] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a pressure sensor 80 and a control center 70. The pressure sensor 80 is connected to the control center 70. The control center 70 is used to control the opening of the first large flow valve 50 and the opening of the first quick response valve 60. The pressure sensor 80 is used to detect the pressure value in the closed cabin 10 and transmit the pressure value to the control center 70.

[0046] Thus, by providing the pressure sensor 80, the pressure value in the sealed cabin 10 can be detected in real time, thereby improving the accuracy and real-time performance of obtaining the pressure value. The control center 70 can automatically adjust the opening of the first large flow valve 50 and the first fast response valve 60 according to the pressure value provided by the pressure sensor 80, thereby reducing the pressure in the sealed cabin 10 at a faster speed and higher precision, thereby achieving fast and high-precision regulation of the pressure in the sealed cabin 10.

[0047] Specifically, the pressure sensor 80 may be a piezoelectric type, a strain gauge type, a capacitive type, or an optical fiber type, etc. The pressure sensor 80 may be electrically connected to the control center 70, and the pressure sensor 80 may transmit the detected pressure value in the sealed cabin 10 to the control center 70 in the form of an electrical signal. The control center 70 may control the opening of the first large flow valve 50 and the first fast response valve 60 according to the pressure value.

[0048] The working medium can enter the closed cabin 10 from the low-pressure source 40 through the closed pipeline 30. After the working medium enters the closed cabin 10, the control center 70 can set the pressure accuracy command, and the first controller 71 and the second controller 72 can judge and transmit the pressure accuracy command. The first large flow valve 50 can be adjusted to the rough accuracy of the required pressure value, and the first fast response valve 60 can be adjusted to the exact accuracy of the required pressure value. When the pressure in the closed cabin 10 reaches the pressure environment set by the control center 70, the first controller 71 can control the first large flow valve 50 to close, and at this time the second controller 72 can adjust the first fast response valve 60 according to the pressure fluctuation in the closed cabin 10 detected by the pressure sensor 80, thereby adjusting the pressure environment in the closed cabin 10.

[0049] It can be understood that after the control center 70 gives the required target pressure, the opening of the first large flow valve 50 is first controlled by the first controller 71, so that the actual pressure in the closed cabin 10 quickly approaches the target pressure. When the actual pressure reaches near the target pressure, the first large flow valve 50 is closed. At this time, the pressure sensor 80 collects the actual pressure in the closed cabin 10, and generates a pressure error signal with the actual pressure and the target pressure, and then generates a control signal through the second controller 72, thereby driving the first fast response valve 60 so that the pressure error is quickly reduced and converges to 0, and the first fast response valve 60 is closed at this time. When the actual pressure in the closed cabin 10 collected by the pressure sensor 80 changes, the pressure error signal becomes larger, and the first fast response valve 60 can be opened at this time, so as to achieve stable regulation of the pressure of the closed cabin 10.

[0050] See also Figure 1 In some embodiments, the closed pipeline 30 also includes a second main flow path 33 and a second bypass flow path 34, the second main flow path 33 is connected to the high-pressure source 20 and the closed cabin 10, and both ends of the second bypass flow path 34 are connected to the second main flow path 33; the high-precision regulating device 100 with automatic pressure stability also includes a second large flow valve 90 and a second fast response valve 101, the second large flow valve 90 is arranged on the second main flow path 33, and the second fast response valve 101 is arranged on the second bypass flow path 34 and is connected in parallel with the second large flow valve 90.

[0051] In this way, by setting the second large flow valve 90 on the second main flow path 33, the pressure in the sealed cabin 10 can be quickly increased to achieve rapid pressure regulation. The second large flow valve 90 is arranged in parallel with the second fast response valve 101, so that on the basis of rapid pressure regulation, the second fast response valve 101 can increase the pressure in the sealed cabin 10 with high accuracy, thereby achieving high-precision pressure regulation.

[0052] Specifically, the second main flow path 33 is a main channel of the closed pipeline 30, connecting the high-pressure source 20 and the closed cabin 10, and is responsible for conveying high-pressure fluid to increase the pressure in the closed cabin 10. The second bypass flow path 34 is an auxiliary channel branched from the second main flow path 33, and both ends are connected to the second main flow path 33, providing an additional path. The diameter ratio and flow ratio of the second main flow path 33 and the second bypass flow path 34 can be set according to actual needs.

[0053] The second large flow valve 90 can be arranged outside the sealed cabin 10. The second large flow valve 90 is used to control the fluid flow from the high pressure source 20 to the sealed cabin 10, so as to achieve rapid pressure regulation. The second large flow valve 90 can be a large butterfly valve, a ball valve, etc., and the specific type, specification, model, size, etc. are set according to actual needs. The second large flow valve 90 can be electrically controlled or manually controlled.

[0054] The second quick response valve 101 can be arranged on the outside of the closed cabin 10, and the second quick response valve 101 can be a high-precision valve. The second quick response valve 101 is used to control the fluid flow from the low-pressure source 40 to the closed cabin 10. The second quick response valve 101 has a short response time and high adjustment accuracy. The second quick response valve 101 can be a high-frequency electromagnetic fast-response valve, an electric hydraulic valve, or other valves with a response time of less than 0.1s. The specific type, specification, model, size, etc. are set according to actual needs. The second quick response valve 101 can be electrically controlled or manually controlled.

[0055] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a control center 70, and the control center 70 includes a third controller 73, which is connected to the second large flow valve 90, and the third controller 73 is used to control the opening of the second large flow valve 90.

[0056] In this way, the third controller 73 can automatically control the opening of the second large flow valve 90, thereby realizing rapid adjustment of the pressure in the closed cabin 10, so that the pressure in the closed cabin 10 can be increased at a faster rate. This process does not require human intervention, thereby improving the degree of automation of adjusting the pressure of the closed cabin 10 through the second large flow valve 90.

[0057] Specifically, the control center 70 can communicate with the second large flow valve 90 through the third controller 73 to control the opening of the second large flow valve 90. The third controller 73 can be electrically or wirelessly connected to the second large flow valve 90. For example, the third controller 73 can control the opening of the second large flow valve 90 through an electrical signal, thereby controlling the flow rate of the fluid flowing through the second large flow valve 90.

[0058] See also Figure 1In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a control center 70, and the control center 70 also includes a fourth controller 74, which is connected to the second fast response valve 101, and the fourth controller 74 is used to control the opening of the second fast response valve 101.

[0059] In this way, the fourth controller 74 can automatically control the opening of the second quick response valve 101, thereby achieving high-precision regulation of the pressure in the closed cabin 10, so that the pressure in the closed cabin 10 can be increased with higher precision. This process does not require human intervention, thereby improving the degree of automation of regulating the pressure of the closed cabin 10 through the second quick response valve 101.

[0060] Specifically, the fourth controller 74 can be set on the outside of the closed cabin 10, and the fourth controller 74 can be electrically or wirelessly connected to the second quick response valve 101. For example, the fourth controller 74 can control the opening of the second quick response valve 101 through an electrical signal, thereby controlling the flow rate of the fluid flowing through the second quick response valve 101.

[0061] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a pressure sensor 80 and a control center 70. The pressure sensor 80 is connected to the control center 70. The control center 70 is used to control the opening of the second large flow valve 90 and the opening of the second fast response valve 101. The pressure sensor 80 is used to detect the pressure value in the closed cabin 10 and transmit the pressure value to the control center 70.

[0062] Thus, by providing the pressure sensor 80, the pressure value in the sealed cabin 10 can be detected in real time, thereby improving the accuracy and real-time performance of obtaining the pressure value. The control center 70 can automatically adjust the opening of the first large flow valve 50 and the first fast response valve 60 according to the pressure value provided by the pressure sensor 80, thereby increasing the pressure in the sealed cabin 10 at a faster speed and higher precision, thereby achieving fast and high-precision regulation of the pressure in the sealed cabin 10.

[0063] Specifically, the working medium can enter the closed cabin 10 from the high-pressure source 20 through the closed pipeline 30. After the working medium enters the closed cabin 10, the control center 70 can set the pressure accuracy command, and the third controller 73 and the fourth controller 74 can judge and transmit the pressure accuracy command. The second large flow valve 90 can be adjusted to the rough accuracy of the required pressure value, and the second fast response valve 101 can be adjusted to the exact accuracy of the required pressure value. When the pressure in the closed cabin 10 reaches the pressure environment set by the control center 70, the third controller 73 can control the second large flow valve 90 to close, and at this time the fourth controller 74 can adjust the second fast response valve 101 according to the pressure fluctuation in the closed cabin 10 detected by the pressure sensor 80, thereby adjusting the pressure environment in the closed cabin 10.

[0064] It can be understood that after the control center 70 gives the required target pressure, the opening of the second large flow valve 90 is first controlled by the third controller 73, so that the actual pressure in the closed cabin 10 quickly approaches the target pressure. When the actual pressure reaches near the target pressure, the second large flow valve 90 is closed. At this time, the pressure sensor 80 collects the actual pressure in the closed cabin 10, and generates a pressure error signal with the actual pressure and the target pressure, and then generates a control signal through the fourth controller 74, thereby driving the second fast response valve 101 so that the pressure error is quickly reduced and converges to 0, and the second fast response valve 101 is closed at this time. When the actual pressure in the closed cabin 10 collected by the pressure sensor 80 changes, the pressure error signal becomes larger, and the second fast response valve 101 can be opened at this time, so as to achieve stable regulation of the pressure of the closed cabin 10.

[0065] See also Figure 1 In some embodiments, the high-precision regulating device 100 with automatic pressure stabilization also includes a control interface 102, which is connected to the control center 70. The control interface 102 is used to set the target pressure and transmit the target pressure to the control center 70 so that the control center 70 controls the flow of the closed pipeline 30.

[0066] In this way, the control interface 102 provides a simple and clear way to set the target pressure. The user does not need to go through complicated programming or manual calculations, but only needs to input through the control interface 102, which improves the convenience and safety of pressure regulation in the closed cabin 10.

[0067] Specifically, the control interface 102 may be a device for inputting data and information into a computer, such as a keyboard, a mouse, and a voice input device, or an interactive platform such as a mobile application, a graphical user interface, and a programmable logic controller interface. The control interface 102 may be configured through a mobile terminal such as a mobile phone, a computer, etc., or may be configured through other interactive structures such as a touch screen interface, a control switch, or a control button.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-precision pressure regulating device with automatic and stable pressure. It is characterized in that The high-precision regulating device for automatic pressure stabilization comprises: Closed cabin; A high-pressure source, the high-pressure source is connected to the sealed cabin through a sealed pipeline, and the high-pressure source is used to increase the pressure of the sealed cabin; A low-pressure source, the low-pressure source is connected to the closed cabin through a closed pipeline, and the low-pressure source is used to reduce the pressure of the closed cabin; The closed pipeline also includes a first main flow path and a first bypass flow path, the first main flow path is connected to the low-pressure source and the closed cabin, and both ends of the first bypass flow path are connected to the first main flow path; the high-precision adjustment device with automatic pressure stability also includes a first large flow valve and a first fast response valve, the first large flow valve is arranged on the first main flow path, and the first fast response valve is arranged on the first bypass flow path and is connected in parallel with the first large flow valve.

2. The high-precision pressure regulating device with automatic stabilization according to claim 1, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a control center, which includes a first controller. The first controller is connected to the first large flow valve, and the first controller is used to control the opening of the first large flow valve.

3. The high-precision pressure regulating device with automatic stabilization according to claim 1, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a control center, and the control center also includes a second controller, the second controller is connected to the first fast response valve, and the second controller is used to control the opening of the first fast response valve.

4. The high-precision pressure regulating device with automatic stabilization according to claim 1, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a pressure sensor and a control center. The pressure sensor is connected to the control center. The control center is used to control the opening of the first large flow valve and the opening of the first fast response valve. The pressure sensor is used to detect the pressure value in the closed cabin and transmit the pressure value to the control center.

5. The high-precision pressure regulating device with automatic stabilization according to claim 1, It is characterized in that The closed pipeline also includes a second main flow path and a second bypass flow path, the second main flow path is connected to the high-pressure source and the closed cabin, and both ends of the second bypass flow path are connected to the second main flow path; the high-precision adjustment device with automatic pressure stability also includes a second large flow valve and a second fast response valve, the second large flow valve is arranged on the second main flow path, and the second fast response valve is arranged on the second bypass flow path and is connected in parallel with the second large flow valve.

6. The high-precision pressure regulating device with automatic stabilization according to claim 5, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a control center, which includes a third controller. The third controller is connected to the second large flow valve, and the third controller is used to control the opening of the second large flow valve.

7. The high-precision pressure regulating device with automatic stabilization according to claim 5, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a control center, and the control center also includes a fourth controller. The fourth controller is connected to the second fast-response valve, and the fourth controller is used to control the opening of the second fast-response valve.

8. The high-precision pressure regulating device with automatic stabilization according to claim 5, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a pressure sensor and a control center. The pressure sensor is connected to the control center. The control center is used to control the opening of the second large flow valve and the opening of the second fast response valve. The pressure sensor is used to detect the pressure value in the closed cabin and transmit the pressure value to the control center.

9. The high-precision pressure regulating device with automatic stabilization according to claim 4 or 8, It is characterized in that The high-precision regulating device with automatic pressure stabilization also includes a control interface, which is connected to the control center. The control interface is used to set the target pressure and transmit the target pressure to the control center so that the control center controls the flow of the closed pipeline.

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