A pressurization and depressurization device and pressure management system

Abstract

The utility model embodiment provides a kind of pressurizing and pressure relief device and pressure management system, it is related to pressure control technical field, the pressurizing and pressure relief device includes pressure vessel, pressurizing module and pressure relief module, the pressure vessel is used to accommodate pressurizing medium;The pressurizing module is connected with the pressure vessel;The pressure relief module is equipped with at least two pressure relief passages, the inlet end of each the pressure relief passage is connected with the pressure vessel, and outlet end is used to discharge pressure;Wherein, the flow coefficient of each the pressure relief passage is different, by switching each the pressure relief passage and adjusting the pressure relief rate of corresponding the pressure relief passage to keep linear pressure relief.In the utility model embodiment, by at least two the pressure relief passage, the adjustment range of pressure relief rate is expanded, and the high linearity and speed stability of pressure relief process are ensured.

Description

Technical Field

[0001] This utility model relates to the field of pressure control technology, and in particular to a pressure-pressurizing and pressure-relieving device and a pressure management system. Background Technology

[0002] In the field of pressure vessel testing, pressurization and depressurization systems are key devices for accurately building and releasing pressure within the vessel, and are widely used in scenarios such as material fatigue life testing, valve and pipe performance verification, and pressure instrument calibration. Linear depressurization is particularly crucial, as it simulates smooth pressure changes under real-world operating conditions, avoids the shock effects caused by excessively rapid depressurization, and ensures the accuracy and repeatability of test data.

[0003] Existing pressure relief devices typically use regulating valves for pressure relief, but the regulating valves have poor regulating capacity. In the initial stage of pressure relief, the pressure relief rate is unstable, and in the final stage of pressure relief, the maximum pressure relief rate cannot be achieved, making it difficult to meet the requirements of linear pressure relief. Utility Model Content

[0004] This utility model provides a pressurization and depressurization device and a pressure management system to solve the technical problem that existing pressurization and depressurization devices in the related art cannot meet the requirements of linear depressurization.

[0005] In a first aspect, embodiments of the present invention provide a pressure-pressurizing and pressure-relieving device, comprising: A pressure vessel for containing a pressurized medium; A pressurization module, which is connected to the pressure vessel; The pressure relief module includes at least two pressure relief passages, the inlet end of each pressure relief passage being connected to the pressure vessel and the outlet end being used for pressure release; The flow coefficients of each of the pressure relief paths are different. Linear pressure relief is maintained by switching each of the pressure relief paths and adjusting the pressure relief rate of the corresponding pressure relief path.

[0006] In some embodiments, each of the pressure relief pathways includes: A regulating valve is located at one end near the pressure vessel and is connected to the pressure vessel; A shut-off valve, which is connected to the regulating valve.

[0007] In some embodiments, the following are also provided: The controller is electrically connected to the electric regulating valve and the electric shut-off valve.

[0008] In some embodiments, an emergency pressure relief valve is also included, which is connected to the pressure vessel.

[0009] In some embodiments, the pressure sensor is also included, which is disposed on the pressure vessel.

[0010] In some embodiments, the pressure sensor is a piezoresistive pressure sensor.

[0011] In some embodiments, the pressurization module includes a variable frequency pressurization pump connected to the pressure vessel.

[0012] Secondly, this utility model embodiment also provides a pressure management system, including the aforementioned pressurization and depressurization device.

[0013] The beneficial effects of the technical solution provided by this utility model include: This utility model provides a pressure-pressurizing and pressure-relief device and a pressure management system. The pressure-pressurizing and pressure-relief device includes a pressure vessel, a pressurizing module, and a pressure-relief module. The pressure vessel contains a pressurizing medium. The pressurizing module is connected to the pressure vessel. The pressure-relief module has at least two pressure-relief passages. The inlet end of each pressure-relief passage is connected to the pressure vessel, and the outlet end is used for pressure release. Each pressure-relief passage has a different flow coefficient. By switching between the pressure-relief passages and adjusting the pressure-relief rate of the corresponding passage, linear pressure relief is maintained. In this utility model embodiment, the different flow coefficients of each pressure-relief passage result in weaker flow capacity, enabling precise control of linear pressure relief within the small range of the adjustment range. Conversely, the larger flow coefficient results in stronger flow capacity, enabling precise control of linear pressure relief within the large range of the adjustment range. This ensures the adjustment capability of the pressure-pressurizing and pressure-relief device, improves the stability of the pressure-relief rate in the initial stage of pressure relief, and ensures that the maximum pressure-relief rate is reached in the final stage of pressure relief, thus meeting the requirement for linear pressure relief. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a pressure-relieving device provided in an embodiment of the present invention; Figure label: 1. Pressure vessels; 2. Pressurization module; 21. Variable frequency pressurization pump; 3. Pressure relief module; 31. Pressure relief passage; 311. Regulating valve; 312. Shut-off valve; 4. Controller; 5. Emergency pressure relief valve; 6. Pressure sensor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] This utility model provides a pressurization and depressurization device and a pressure management system, which can solve the technical problem that existing pressurization and depressurization devices in related technologies cannot meet the requirements of linear depressurization.

[0018] See Figure 1 As shown in the figure, an embodiment of the present invention provides a pressure-relieving device, which includes a pressure vessel 1, a pressure-relieving module 2, and a pressure-relieving module 3. The pressure vessel 1 is used to contain a pressure-relieving medium; the pressure-relieving module 2 is connected to the pressure vessel 1; the pressure-relieving module 3 is provided with at least two pressure-relieving passages 31, the inlet end of each pressure-relieving passage 31 is connected to the pressure vessel 1, and the outlet end is used for pressure discharge; wherein, the flow coefficients of each pressure-relieving passage 31 are different, and linear pressure relief is maintained by switching each pressure-relieving passage 31 and adjusting the pressure relief rate of the corresponding pressure-relieving passage 31. In this embodiment of the invention, each pressure relief passage 31 has a different flow coefficient. The pressure relief passage 31 with a smaller flow coefficient has weaker flow capacity and is used to achieve precise control of linear pressure relief in the small range throughout the adjustment range. The pressure relief passage 31 with a larger flow coefficient has stronger flow capacity and is used to achieve precise control of linear pressure relief in the large range throughout the adjustment range. This ensures the adjustment capability of the pressure relief device, improves the stability of the pressure relief rate in the initial stage of pressure relief, and ensures that the maximum pressure relief rate can be reached in the final stage of pressure relief, thus meeting the requirement for linear pressure relief.

[0019] This utility model provides a pressure-pressurizing and pressure-relief device, which includes a pressure vessel, a pressurizing module, and a pressure-relief module. The pressure vessel contains a pressurizing medium; the pressurizing module is connected to the pressure vessel; the pressure-relief module has at least two pressure-relief passages, each with an inlet connected to the pressure vessel and an outlet for releasing pressure. Each pressure-relief passage has a different flow coefficient. Linear pressure relief is maintained by switching between the pressure-relief passages and adjusting the pressure relief rate of the corresponding passage. In this utility model embodiment, the different flow coefficients of each pressure-relief passage result in a lower flow capacity, used for precise control of linear pressure relief within the small range of the adjustment range. Conversely, the higher flow coefficient results in a higher flow capacity, used for precise control of linear pressure relief within the large range of the adjustment range. This ensures the adjustment capability of the pressure-pressurizing and pressure-relief device, improves the stability of the pressure relief rate in the initial stage of pressure relief, and ensures that the maximum pressure relief rate is reached in the final stage of pressure relief, thus meeting the requirement for linear pressure relief.

[0020] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, each of the pressure relief passages 31 includes a regulating valve 311 and a shut-off valve 312. The regulating valve 311 is located near the pressure vessel 1 and is connected to the pressure vessel 1; the shut-off valve 312 is connected to the regulating valve 311. In this embodiment of the invention, when a smaller pressure relief rate is required, the shut-off valve 312 in the pressure relief passage 31 with the smaller flow coefficient is opened first, and then the regulating valve 311 in the pressure relief passage 31 is slowly opened to a suitable opening degree. As the pressure in the pressure vessel 1 decreases, the pressure difference across the regulating valve 311 decreases, increasing the opening degree of the regulating valve 311 to maintain a constant pressure relief rate. When a larger pressure relief rate is required, the shut-off valve 312 in the pressure relief passage 31 with the larger flow coefficient is opened first. Then, the regulating valve 311 in the pressure relief passage 31 is slowly opened to a suitable opening degree. As the pressure inside the pressure vessel 1 decreases, the pressure difference across the regulating valve 311 decreases, increasing the opening degree of the regulating valve 311 to maintain a constant pressure relief rate. In each pressure relief passage 31, the regulating valve 311 precisely controls the flow rate to maintain a constant pressure relief rate, while the shut-off valve 312 acts as a reliable isolation unit, ensuring that the pressure relief passage 31 is completely sealed when not in operation. This prevents the regulating valve 311 from being under pressure for a long time or from developing internal leakage, which could lead to pressure holding failure. The structure is simple and reliable, improving the stability of the pressurization and pressure relief device.

[0021] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1As shown, the pressurization and depressurization device also includes a controller 4. The regulating valve 311 is an electrically adjustable valve, and the shut-off valve 312 is an electrically shut-off valve. The controller 4 is electrically connected to the electrically adjustable valve and the electrically shut-off valve. In this embodiment, the controller 4 outputs control commands to the electrically adjustable valve to adjust its opening, achieving closed-loop control of the depressurization rate. Simultaneously, the controller 4 drives the opening and closing of the electrically shut-off valve, ensuring reliable isolation of the depressurization passage 31 in the non-working state. This achieves fully automated, precise, and linear depressurization, eliminating human error, improving control stability and test repeatability, and is particularly suitable for long-term cyclic fatigue tests. It significantly reduces labor intensity and ensures the safety of the pressurization and depressurization device.

[0022] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the pressurization and depressurization device also includes an emergency depressurization valve 5, which is connected to the pressure vessel 1. In this embodiment of the invention, when the electric regulating valve in the depressurization passage 31 malfunctions, the emergency depressurization valve 5 can be manually opened to depressurize the pressure in the pressure vessel 1 before maintenance, further ensuring the safety of the pressurization and depressurization device.

[0023] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the pressurization and depressurization device also includes a pressure sensor 6, which is mounted on the pressure vessel 1. In this embodiment of the invention, the pressure sensor 6 converts the pressure signal received from the pressure vessel 1 into an electrical signal output, thereby accurately measuring the pressure value inside the pressure vessel 1 in real time. This provides a continuous and accurate feedback signal to the controller 4, which is the basis for achieving high-precision linear depressurization and improves the practicality of the pressurization and depressurization device.

[0024] As an optional implementation, in one embodiment of the invention, the pressure sensor 6 is a piezoresistive pressure sensor. In this embodiment, the piezoresistive pressure sensor features fast response, high measurement accuracy, and good stability, providing real-time and accurate pressure feedback to the controller 4, ensuring the stability of the depressurization process and the reliability of the test data.

[0025] As an optional implementation, in one embodiment of the invention, the pressurization module 2 includes a variable frequency pressurization pump 21, which is connected to the pressure vessel 1. In this embodiment, the variable frequency pressurization pump 21 is used to adjust the speed of the drive motor in real time, thereby changing the output flow rate and pressure. This achieves precise linear control of the pressurization process, and the pressurization speed can be smoothly adjusted steplessly according to the set rate. This avoids the pressure jumps and shocks caused by the start-stop control of traditional power frequency pumps, significantly improving the stability and controllability of the pressurization process, and providing a reliable pressure source for high-precision fatigue testing.

[0026] This invention also provides a pressure management system, which includes the aforementioned pressurization and depressurization device. The pressurization and depressurization device includes a pressure vessel 1, a pressurization module 2, and a depressurization module 3. The pressure vessel 1 contains a pressurized medium; the pressurization module 2 is connected to the pressure vessel 1; the depressurization module 3 has at least two depressurization passages 31, each with its inlet connected to the pressure vessel 1 and its outlet for pressure release. Each depressurization passage 31 has a different flow coefficient. Linear depressurization is maintained by switching between the depressurization passages 31 and adjusting the depressurization rate of the corresponding passage. In this invention, the at least two depressurization passages 31 expand the adjustment range of the depressurization rate, ensuring high linearity and speed stability in the depressurization process.

[0027] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1As shown, each of the pressure relief passages 31 includes a regulating valve 311 and a shut-off valve 312. The regulating valve 311 is located near the pressure vessel 1 and is connected to the pressure vessel 1; the shut-off valve 312 is connected to the regulating valve 311. In this embodiment of the invention, when a smaller pressure relief rate is required, the shut-off valve 312 in the pressure relief passage 31 with the smaller flow coefficient is opened first, and then the regulating valve 311 in the pressure relief passage 31 is slowly opened to a suitable opening degree. As the pressure in the pressure vessel 1 decreases, the pressure difference across the regulating valve 311 decreases, increasing the opening degree of the regulating valve 311 to maintain a constant pressure relief rate. When a larger pressure relief rate is required, the shut-off valve 312 in the pressure relief passage 31 with the larger flow coefficient is opened first. Then, the regulating valve 311 in the pressure relief passage 31 is slowly opened to a suitable opening degree. As the pressure inside the pressure vessel 1 decreases, the pressure difference across the regulating valve 311 decreases, increasing the opening degree of the regulating valve 311 to maintain a constant pressure relief rate. In each pressure relief passage 31, the regulating valve 311 precisely controls the flow rate to maintain a constant pressure relief rate, while the shut-off valve 312 acts as a reliable isolation unit, ensuring that the pressure relief passage 31 is completely sealed when not in operation. This prevents the regulating valve 311 from being under pressure for a long time or from developing internal leakage, which could lead to pressure holding failure. The structure is simple and reliable, improving the stability of the pressure management system.

[0028] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the pressurization and depressurization device also includes a controller 4. The regulating valve 311 is an electrically adjustable valve, and the shut-off valve 312 is an electrically shut-off valve. The controller 4 is electrically connected to the electrically adjustable valve and the electrically shut-off valve. In this embodiment, the controller 4 outputs control commands to the electrically adjustable valve to adjust its opening degree, realizing closed-loop control of the depressurization rate. Simultaneously, the controller 4 drives the opening and closing of the electrically shut-off valve, ensuring reliable isolation of the depressurization passage 31 in the non-working state. This achieves fully automated, precise, and linear depressurization, eliminating human error, improving control stability and test repeatability, and is particularly suitable for long-term cyclic fatigue tests. It significantly reduces labor intensity and ensures the safety of the pressure management system.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] It should be noted that in this invention, 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 such actual relationship or order between these entities or operations. Furthermore, the terms "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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A pressure-pressurizing and pressure-relieving device, characterized in that, include: Pressure vessel (1), the pressure vessel (1) being used to contain a pressurized medium; A pressurization module (2) is connected to the pressure vessel (1); The pressure relief module (3) includes at least two pressure relief passages (31), the inlet end of each pressure relief passage (31) is connected to the pressure vessel (1), and the outlet end is used for pressure relief; The flow coefficients of each of the pressure relief passages (31) are different. By switching each of the pressure relief passages (31) and adjusting the pressure relief rate of the corresponding pressure relief passage (31), linear pressure relief can be maintained.

2. The pressure-pressurizing and pressure-relieving device according to claim 1, characterized in that, Each of the aforementioned pressure relief passages (31) includes: A regulating valve (311) is located at one end near the pressure vessel (1) and is connected to the pressure vessel (1); A shut-off valve (312) is connected to the regulating valve (311).

3. The pressure-pressurizing and pressure-relieving device according to claim 2, characterized in that, Also included are: The controller (4) is electrically connected to the electric regulating valve (311) and the electric shut-off valve (312).

4. The pressure-pressurizing and pressure-relieving device according to claim 1, characterized in that, Also includes: Emergency pressure relief valve (5) is connected to the pressure vessel (1).

5. The pressure-pressurizing and pressure-relieving device according to claim 1, characterized in that, Also includes: Pressure sensor (6) is disposed on the pressure vessel (1).

6. The pressure-pressurizing and pressure-relieving device according to claim 5, characterized in that: The pressure sensor (6) is a piezoresistive pressure sensor.

7. A pressure-pressurizing and pressure-relieving device according to claim 1, characterized in that, The pressurization module (2) includes: A variable frequency pressurization pump (21) is connected to the pressure vessel (1).

8. A pressure management system, characterized in that, Includes a pressure-relieving device as described in any one of claims 1-7.

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