A high-performance constant-pressure cabin pressure control device
Patent Information
- Application Number
- CN202522773474.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-27
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-27
AI Technical Summary
Traditional constant pressure chamber pressure control devices suffer from insufficient constant pressure accuracy, difficulty in coping with minute pressure fluctuations, lack of independent pressure monitoring and pressure relief closed-loop structure, safety hazards, and difficulty in linking with automated systems.
It adopts a combination of two-stage pressure gate valves and a two-way vacuum pump, and connects the high-pressure gas tank and the pressure chamber through a circulation pipeline to achieve automated pressure regulation and monitoring. It is equipped with electronic pressure relief valves and drain valves to ensure stable and safe gas pressure.
It achieves rapid pressure increase and decrease, constant pressure control, and features energy saving, environmental protection, low noise, and stable air pressure regulation, thus improving the safety and adaptability of the equipment.
Smart Images
Figure CN224934345U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of constant pressure chamber pressure control devices, and in particular to a high-efficiency constant pressure chamber pressure control device. Background Technology
[0002] In fields such as industrial testing, precision manufacturing, and biological experiments, constant pressure chambers, as core equipment that provides a stable pressure environment, are widely used in scenarios such as component pressure resistance testing, gas reaction environment simulation, and precision instrument calibration.
[0003] As application scenarios increasingly demand higher requirements for pressure control accuracy, equipment safety, and adaptability, traditional constant pressure chamber pressure control devices have gradually revealed problems such as insufficient constant pressure accuracy, difficulty in coping with minor pressure fluctuations, lack of independent pressure monitoring, pressure relief closed-loop and drainage structure, safety hazards, and difficulty in linking easily corroded components with automated systems. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose a high-efficiency constant pressure chamber pressure control device to solve the problems of insufficient constant pressure accuracy and unstable air pressure regulation.
[0005] To achieve the above objectives, this utility model provides a high-efficiency constant pressure chamber pressure control device, comprising: an equipment base; a high-pressure gas tank fixedly installed on the top of the equipment base; a pressure chamber fixedly installed on one side of the high-pressure gas tank; a circulation pipeline fixedly installed between the pressure chamber and the high-pressure gas tank; a two-stage pressure gate valve fixedly installed on the circulation pipeline; a bidirectional vacuum pump disposed below the two-stage pressure gate valve; and the bidirectional vacuum pump fixedly installed on the equipment base, and the bidirectional vacuum pump being fixedly connected to the high-pressure gas tank and the pressure chamber respectively.
[0006] As an optional implementation, a high-power booster is fixedly connected to one side of the high-pressure gas tank, and the high-power booster is fixedly installed on the equipment base.
[0007] As an optional implementation, a high-pressure gas tank sensor controller is fixedly installed on one side of the high-pressure gas tank below the circulation pipeline, and an electronic pressure relief valve is fixedly installed on the high-pressure gas tank sensor controller.
[0008] As an optional implementation, a first drain valve is provided below the electronic pressure relief valve. The first drain valve is fixedly installed on the high-pressure gas tank, and a high-pressure gas tank pressure gauge is fixedly installed on the other side of the high-pressure gas tank.
[0009] As an optional implementation, a pressure chamber sensor controller is fixedly installed on one side of the pressure chamber below the circulation pipeline. An electronic pressure relief valve is fixedly installed on the pressure chamber sensor controller, and a second drain valve is provided below the electronic pressure relief valve. The second drain valve is fixedly installed on the pressure chamber.
[0010] As an optional implementation, a pressure gauge is fixedly installed on the side of the pressure chamber corresponding to the pressure chamber sensor controller, and an external connector mounting base is fixedly installed on the side of the pressure chamber away from the high-pressure gas tank, with several cylinder external connectors fixedly installed on the external connector mounting base.
[0011] As an optional implementation, a device cover is fixedly installed on top of the device base.
[0012] This utility model has at least the following beneficial effects: 1. This utility model injects high-pressure gas into a high-pressure gas tank. Once the pressure inside the tank reaches the initial requirement, the two-stage pressure gate valve on the circulation pipeline is opened, and the high-pressure gas enters the pressure chamber through the circulation pipeline. If the pressure is lower than the preset value, the bidirectional vacuum pump is started to replenish gas from the high-pressure gas tank to the pressure chamber or adjust it in the opposite direction. Based on the actual pressure difference, the pressure of both is kept stable. This device uses a two-stage pressure gate valve for automatic adjustment and has functions such as rapid pressure increase and decrease and constant pressure control. It has the advantages of energy saving and environmental protection, low noise, and stable air pressure regulation. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a three-dimensional schematic diagram of the constant pressure chamber pressure control device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the constant pressure chamber pressure control device according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the high-pressure gas tank device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the pressure chamber device in an embodiment of this utility model.
[0015] The diagram is marked as follows: 1. Equipment cover; 2. Cylinder external connector; 3. Equipment base; 4. Circulation pipeline; 5. Two-stage pressure gate valve; 6. First drain valve; 7. Electronic pressure relief valve; 8. Second drain valve; 9. High-pressure gas tank pressure gauge; 10. High-pressure gas tank; 11. Pressure chamber pressure gauge; 12. Pressure chamber; 13. External connector fixing seat; 14. High-power booster; 15. High-pressure gas tank sensor controller; 16. Pressure chamber sensor controller; 17. Two-way vacuum pump. Detailed Implementation
[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0017] like Figures 1-4 As shown, a high-efficiency constant pressure chamber pressure control device includes an equipment base 3, a high-pressure gas tank 10 fixedly installed on the top of the equipment base 3, a pressure chamber 12 fixedly installed on one side of the high-pressure gas tank 10, a circulation pipeline 4 fixedly installed between the pressure chamber 12 and the high-pressure gas tank 10, a two-stage pressure gate valve 5 fixedly installed on the circulation pipeline 4, a bidirectional vacuum pump 17 installed below the two-stage pressure gate valve 5, and the bidirectional vacuum pump 17 fixedly installed on the equipment base 3. The bidirectional vacuum pump 17 is fixedly connected to the high-pressure gas tank 10 and the pressure chamber 12 respectively.
[0018] In this way, all core components, such as the high-pressure gas tank 10 and the pressure chamber 12, are fixed on the equipment base 3. High-pressure gas is injected into the high-pressure gas tank 10. After the pressure inside the tank reaches the initial requirement, the two-stage pressure gate valve 5 on the circulation pipeline 4 is opened. The high-pressure gas enters the pressure chamber 12 through the circulation pipeline 4. If the pressure is lower than the preset value, the bidirectional vacuum pump 17 is started to replenish gas from the high-pressure gas tank 10 to the pressure chamber 12 or adjust it in the opposite direction. According to the actual pressure difference, the pressure of the two is kept stable. The device uses the two-stage pressure gate valve 5 for automatic adjustment and has functions such as rapid pressure increase and decrease and constant pressure control. It has the advantages of energy saving and environmental protection, low noise, and stable air pressure regulation.
[0019] like Figures 1-4 As shown, a high-power booster 14 is fixedly connected to one side of the high-pressure gas tank 10, and the high-power booster 14 is fixedly installed on the equipment base 3; a high-pressure gas tank sensor controller 15 is fixedly installed on one side of the high-pressure gas tank 10 below the circulation pipeline 4, and an electronic pressure relief valve 7 is fixedly installed on the high-pressure gas tank sensor controller 15; a first drain valve 6 is provided below the electronic pressure relief valve 7, and the first drain valve 6 is fixedly installed on the high-pressure gas tank 10; a high-pressure gas tank pressure gauge 9 is fixedly installed on the other side of the high-pressure gas tank 10.
[0020] Thus, the high-power booster 14 fixed on the equipment base 3 is started. The high-power booster quickly fills the high-pressure gas tank and raises the pressure to 55 kPa before stopping. The pressure inside the tank is monitored in real time through the pressure gauge 9 of the high-pressure gas tank until the preset working pressure is reached. Then the high-power booster 14 is turned off. The high-pressure gas tank sensor controller 15 continuously monitors the pressure inside the tank. If the pressure exceeds the safety threshold, it automatically triggers the electronic pressure relief valve 7 to open and release pressure to avoid the risk of overpressure. If the pressure is within the normal range, the electronic pressure relief valve 7 remains closed. During the operation of the device, if condensate is generated in the high-pressure gas tank 10, the first drain valve 6 at the bottom can be opened periodically to drain the accumulated water and prevent moisture from affecting the purity of the gas or the life of the components.
[0021] like Figures 1-4 As shown, a pressure chamber sensor controller 16 is fixedly installed on one side of the pressure chamber 12 below the circulation pipeline 4. An electronic pressure relief valve 7 is fixedly installed on the pressure chamber sensor controller 16. A second drain valve 8 is provided below the electronic pressure relief valve 7 and is fixedly installed on the pressure chamber 12. A pressure chamber pressure gauge 11 is fixedly installed on the side of the pressure chamber 12 corresponding to the pressure chamber sensor controller 16. An external connector fixing seat 13 is fixedly installed on the side of the pressure chamber 12 away from the high-pressure gas tank 10. Several cylinder external connectors 2 are fixedly installed on the external connector fixing seat 13. An equipment cover 1 is fixedly installed on the top of the equipment base 3.
[0022] Thus, after the high-pressure gas tank 10 has completed pressurization, the two-stage pressure gate valve 5 of the circulation pipeline 4 is opened, and the high-pressure gas enters the pressure chamber 12. The pressure is monitored in real time by the pressure gauge 11 of the pressure chamber until it approaches the preset value. The pressure chamber sensor controller 16 continuously collects the pressure inside the chamber. If the pressure exceeds the preset value, the electronic pressure relief valve 7 on it is automatically opened to release the pressure. If the pressure is insufficient, the bidirectional vacuum pump 17 is used to replenish the pressure from the high-pressure gas tank 10 to maintain the pressure inside the chamber. If condensate is generated in the pressure chamber 12 during operation, the second drain valve 8 is opened to discharge it. After the operation is completed, the external load is disconnected, the valve is closed and the residual pressure is released, and the equipment cover 1 is opened for subsequent inspection.
[0023] Thus, in this embodiment, as... Figures 1-4As shown, close all valves and ensure the equipment cover 1 is closed. Connect the external load equipment requiring constant pressure through the cylinder external connector 2 on the external connector fixing seat 13. Start the high-power booster 14 to inject high-pressure gas into the high-pressure gas tank 10. Monitor the pressure inside the tank through the high-pressure gas tank pressure gauge 9. When the pressure reaches the preset value, open the two-stage pressure gate valve 5. The high-pressure gas enters the pressure chamber 12 through the circulation pipeline 4. At the same time, monitor the pressure inside the chamber in real time through the pressure chamber pressure gauge 11. The high-pressure gas tank sensor controller 15 and the pressure chamber sensor controller 15 are connected. The controller 16 collects the pressure data of the tank and chamber in real time. If the pressure is higher than the preset value, the corresponding sensor controller triggers the electronic pressure relief valve 7 to release the pressure. If the pressure is lower than the preset value, the bidirectional vacuum pump 17 starts to replenish gas from the high-pressure gas tank 10 to the pressure chamber 12 to maintain the pressure of both. If condensate is generated during operation, the first drain valve 6 and the second drain valve 8 can be opened to drain the accumulated water. When stopping work, the high-power booster 14 and the bidirectional vacuum pump 17 are turned off, the electronic pressure relief valve 7 is opened to release the residual pressure, and the external load is disconnected.
[0024] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.
[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.
[0026] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A high-efficiency constant pressure chamber pressure control device, comprising, an equipment base (3), characterized in that: A high-pressure gas tank (10) is fixedly installed above the equipment base (3). A pressure chamber (12) is fixedly installed on one side of the high-pressure gas tank (10). A circulation pipeline (4) is fixedly installed between the pressure chamber (12) and the high-pressure gas tank (10). A two-stage pressure gate valve (5) is fixedly installed on the circulation pipeline (4). A bidirectional vacuum pump (17) is provided below the two-stage pressure gate valve (5). The bidirectional vacuum pump (17) is fixedly installed on the equipment base (3). The bidirectional vacuum pump (17) is fixedly connected to the high-pressure gas tank (10) and the pressure chamber (12) respectively.
2. The high-efficiency constant pressure chamber pressure control device according to claim 1, characterized in that: A high-power booster (14) is fixedly connected to one side of the high-pressure gas tank (10), and the high-power booster (14) is fixedly installed on the equipment base (3).
3. The high-efficiency constant pressure chamber pressure control device according to claim 2, characterized in that: A high-pressure gas tank sensor controller (15) is fixedly installed on one side of the high-pressure gas tank (10) below the circulation pipeline (4), and an electronic pressure relief valve (7) is fixedly installed on the high-pressure gas tank sensor controller (15).
4. The high-efficiency constant pressure chamber pressure control device according to claim 3, characterized in that: Below the electronic pressure relief valve (7) is a first drain valve (6), which is fixedly installed on the high-pressure gas tank (10). A high-pressure gas tank pressure gauge (9) is fixedly installed on the other side of the high-pressure gas tank (10).
5. The high-efficiency constant pressure chamber pressure control device according to claim 1, characterized in that: A pressure chamber sensor controller (16) is fixedly installed on one side of the pressure chamber (12) below the circulation pipeline (4). An electronic pressure relief valve (7) is fixedly installed on the pressure chamber sensor controller (16). A second drain valve (8) is provided below the electronic pressure relief valve (7). The second drain valve (8) is fixedly installed on the pressure chamber (12).
6. The high-efficiency constant pressure chamber pressure control device according to claim 5, characterized in that: The pressure chamber (12) is fixedly installed with a pressure gauge (11) on the side corresponding to the pressure chamber sensor controller (16). An external connector fixing seat (13) is fixedly installed on the side of the pressure chamber (12) away from the high-pressure gas tank (10). Several cylinder external connectors (2) are fixedly installed on the external connector fixing seat (13).
7. The high-efficiency constant pressure chamber pressure control device according to claim 1, characterized in that: The equipment base (3) is fixedly installed on the top of the equipment cover (1).