Rapid pressure relief system

Abstract

A system for rapid pressure relief comprising a burst chamber (1), a sealing vane valve (2), a second bursting device (3), a vacuum reservoir (4), an adjusting device (5) for regulating the size of the burst channel, a first bursting device (6), and a vacuum unit box (7) for evacuating the vacuum reservoir (4), characterized in that two pipes are connected between the burst chamber (1) and the vacuum reservoir (4), one of the pipes being a short pipe and the other a long pipe; the sealing vane valve (2) and the second bursting device (3) are mounted on the short pipe, the sealing vane valve (2) being arranged between the burst chamber (1) and the second bursting device (3); the adjusting device (5) and the first bursting device (6) are mounted on the long pipe, the first bursting device (6) being arranged between the burst chamber (1) and the adjusting device (5).

Description

Technical area

[0001] This utility model relates to decompression testing technology and specifically to a rapid pressure relief system for small, low-pressure vessels capable of simulating rapid decompression in high-altitude environments and conditions encountered during decompression tests. The system is used to investigate physiological and characteristic changes in animals, small components, and products after they have been exposed to various pre-defined natural environments and subjected to extremely rapid pressure drops over a defined period. As an indispensable piece of experimental equipment for veterinary research and studies on high-altitude and mountain products, it is suitable for research institutions. State of the art

[0002] The pressure relief devices currently available on the market are all large laboratory pieces of equipment. Their acquisition and operating costs are extremely high, which negatively impacts the research and development of smaller devices as well as studies in the field of high-altitude biology. Therefore, reducing acquisition and operating costs is an essential research and solution problem for this technology. Content of the utility model

[0003] To solve the aforementioned problems, the purpose of this utility model is to provide a system for rapid pressure relief that enables experiments with fast and extremely fast decompression on small animals and small products.

[0004] The purpose of this utility model is achieved through the following technical measures: A rapid pressure relief system comprises a bursting chamber, a poppet valve, a secondary bursting device, a vacuum reservoir, an adjustment device for regulating the size of the bursting channel, a primary bursting device, and a vacuum unit for evacuating the vacuum reservoir. Two pipes are connected between the bursting chamber and the vacuum reservoir, one being a short pipe and the other a long pipe. The poppet valve and the secondary bursting device are mounted on the short pipe, with the poppet valve positioned between the bursting chamber and the secondary bursting device. The adjustment device and the primary bursting device are mounted on the long pipe, with the primary bursting device positioned between the bursting chamber and the adjustment device.Both the first and second bursting devices each comprise a pressure device, a bursting element, an impact device, and a pressure-resistant housing. The pressure-resistant housing has a hollow structure with open ends. The bursting element is made of pressure-resistant, brittle material and is detachably mounted within the pressure-resistant housing to separate the interior of the housing. The pressure device consists of several pressure plates, one end of each plate being fixed inside the pressure-resistant housing and the other end being pressed against the bursting element. The impact device is mounted within the pressure-resistant housing and positioned according to the location of the bursting element. Under external force, the impact device is movable toward the bursting element to rupture it.

[0005] The pressure-resistant housing of the first bursting device has a tubular shape, and its bursting element is sealed in the center of its pressure-resistant housing; the pressure-resistant housing of the second bursting device has a square box shape, and its bursting element is sealed at the opening of its pressure-resistant housing on the side of the vacuum reservoir.

[0006] In practical use, the rapid pressure relief system is additionally equipped with an emergency alarm beeper, indicator lights for pressure sensors, a control unit, and a UPS power supply. These are all standard electronic devices in the prior art. Their application in the present utility model simply needs to meet the product's safety and usability requirements. If a defect occurs in the product, the emergency alarm beeper triggers an emergency call, allowing the experimental personnel to take appropriate action in a timely manner, depending on the various situations that actually arise.

[0007] The present utility model has two modes: a fast burst mode in which an air pressure equilibrium in the range of an air pressure altitude of 6000 to 10000 meters is achieved in the burst laboratory within a burst time of 1 to 1.5 seconds; and an extremely fast burst mode in which an air pressure equilibrium in the range of an air pressure altitude of 6000 to 10000 meters is achieved in the second burst device within a burst time of 200 milliseconds.

[0008] The advantageous effects of the present utility model are as follows: The present utility model allows the selection of modes for rapid pressure relief and burst pressure relief for experiments as needed. A quickly opening intermediate sealing valve is installed between the two chambers (burst laboratory and second burst device). When the intermediate sealing valve is closed, the two chambers can be used independently; when the intermediate sealing valve is open, they can be used as a single chamber, thus providing a feature-rich experimental platform for research. The present utility model employs a square structure with maximum space utilization, which is simple and practical, takes up little space, and allows for easy combined use.It meets the requirements for rapid and extremely rapid burst experiments with small animals and small products, fills the gap in current miniaturized experimental devices with extremely rapid air pressure changes, expands the product's functional range, and features simpler, more stable, and more reliable control. It reduces the cost of experimental equipment, expands the types of experimental equipment available, and is characterized by high practicality and safe use, making it particularly suitable for widespread use. Description of the attached drawings

[0009] The structure of the present utility model is explained in more detail below with reference to the drawings. Fig. Figure 1 is a structural view of a system for rapid pressure relief according to the present utility model; Fig. Figure 2 is a duct plan view of the system for rapid pressure relief according to the present utility model; Fig. Figure 3 is a structural view of a second bursting device in the rapid pressure relief system according to the present utility model; and Fig. Figure 4 is a structural view of a vacuum unit box in the system for rapid pressure relief according to the present utility model.

[0010] Shown in the figures: 1-burst laboratory; 2-sealable wing valve; 3-second burst device; 4-vacuum reservoir; 5-adjusting device; 6-first burst device; 7-vacuum unit box; 71-vacuum pump; 72-check valve; 73-frequency converter; 74-housing; 8-pressure device; 9-burst element; 10-impact device; 11-pressure-resistant housing; 12-first inflation tube; and 13-second inflation tube. Examples of implementation

[0011] The embodiments of the present utility model are explained with reference to specific, concrete examples. A person skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this description. The described embodiments are only a subset of the embodiments of the present utility model, not all of them. Based on the embodiments in the present utility model, all other embodiments that a typical engineer in the field could achieve without creative work fall within the scope of protection of the present utility model.

[0012] It should be noted that the structure, proportions, size, and the like shown in the drawings of this description serve solely to coordinate with the content disclosed in the description and to facilitate understanding and reading by the person skilled in the art. They are not intended to establish any limiting conditions for the feasibility of this utility model and therefore have no technical significance. Any modification of the structure, change of proportions, or adjustment of size remains within the scope covered by the technical content disclosed in this utility model, provided that the achievable effects and objectives of this utility model are not impaired. Similarly, the terms used in this description, such as "top," "bottom," "left," "right," "middle," etc., serve no other purpose.This is solely for the purpose of facilitating clear presentation and not limiting the scope of application of this utility model. Changes or adjustments to their relative relationships are also considered to be within the scope of application of this utility model, provided that the technical content is not substantially altered.

[0013] In the description of this utility model, it should be noted that the terms "connected" and "linked" are to be understood in the broadest sense, unless there are explicit provisions and limitations. For example, they may mean a permanent connection, a detachable connection, or a one-piece connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium. For an average technician in the field, the specific meaning of the above terms in this utility model can be understood depending on the specific situation.It should be noted that the term "include," "contain," or any other variant is intended to encompass non-exclusive inclusion, so that a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not explicitly listed or elements inherent to that process, method, article, or device. Example 1: As in Fig. As shown in Figure 1, the present embodiment provides a system for rapid pressure relief, comprising a burst laboratory 1, a sealing vane valve 2, a second bursting device 3, a vacuum reservoir 4, an adjusting device 5, a first bursting device 6, a vacuum unit box 7, associated pipes and fittings, and a control system.

[0014] Burst Lab 1 is a square, hollow, enclosed cabin. It is constructed from pressure vessel steel sheet and subsequently coated with a plastic spray powder coating for corrosion protection. A pressure gauge is connected to Burst Lab 1, and test animals or product components are placed inside to conduct experiments. One side of Burst Lab 1 is connected to the vacuum reservoir 4 via a short tube, and the other side is connected to the vacuum reservoir 4 via a long tube. Burst Lab 1, the vacuum reservoir 4, the adjustment device 5, and the first bursting device 6 together form the basic functional structure of the rapid bursting device in rapid burst mode.A sealing vane valve 2 and a second bursting device 3 are mounted on the short pipe, with the sealing vane valve 2 being located between the bursting chamber 1 and the second bursting device 3. An adjusting device 5 and a first bursting device 6 are mounted on the long pipe, and the first bursting device 6 is located between the bursting chamber 1 and the adjusting device 5. A first inflation tube 12 is connected to the outside of the bursting chamber 1, which serves to inflate gas into the bursting chamber 1. The gas is pumped from the gas source through the first inflation tube 12 into the bursting chamber 1 by means of an air pump, and a manual valve, a solenoid valve, a flow meter, and the like are installed on the first inflation tube 12.

[0015] The sealing vane valve 2 is a commercially available, electrically operated sealing vane valve. During the test preparation phase, it separates the bursting laboratory 1 from the second bursting device 3, so that different experiments can be carried out in bursting laboratory 1 and the second bursting device 3.

[0016] The second bursting device 3 and the first bursting device 6 have a similar structure and each consists of a pressure device 8, a bursting element 9, an impact device 10, and a pressure-resistant housing 11. The pressure-resistant housing 11 is a hollow structure with open ends. The open ends of the pressure-resistant housing 11 of the first bursting device 6 are each connected to the bursting laboratory 1 and the adjustment device 5, and the open ends of the pressure-resistant housing 11 of the second bursting device 3 are each connected to the bursting laboratory 1 and the vacuum reservoir 4. The bursting element 9 is made of pressure-resistant, brittle material (e.g., Plexiglas) and is detachably mounted in the pressure-resistant housing 11 to separate the interior of the pressure-resistant housing 11. The pressure device 8 consists of several evenly spaced pressure plates.One end of each pressure plate is fixed by bolts inside the pressure-resistant housing 11, and the other end is pressed against the bursting element 9. The impact device 10 is mounted in the pressure-resistant housing 11 and positioned according to the position of the bursting element 9. The impact device 10 can be moved towards the bursting element 9 under external force to rupture it. The impact device 10 comprises a pivot axis, a rocker arm, an impact hammer, and a drive mechanism. The pivot axis is rotatably mounted in the pressure-resistant housing 11. One end of the rocker arm is fixed to the pivot axis and can move closer to or away from the bursting element 9 with the rotation of the pivot axis. The impact hammer is mounted at the other end of the rocker arm and can move closer to or away from the bursting element 9 with the rocker arm.Impact pins are provided on the surface of the impact hammer that serves to shatter the bursting element 9. The drive unit is mounted outside the pressure-resistant housing 11 and can rotate the axis of rotation. An electric motor, a hydraulic rod, an air cylinder, or an electric cylinder can be used as the drive unit. If an electric motor is used, gears are mounted on both the axis of rotation and the electric motor, meshing to form a gear drive. If a hydraulic rod, an air cylinder, or an electric cylinder is used, a plunger is fixed vertically to the outside of the axis of rotation. The plunger is connected to the telescopic end of the hydraulic rod, air cylinder, or electric cylinder, and the other end of the hydraulic rod, air cylinder, or electric cylinder is articulated outside the pressure-resistant housing 11.

[0017] The pressure-resistant housing 11 of the second bursting device 3 has a square box shape. It is made of pressure vessel steel sheet and subsequently coated with a plastic spray powder coating to ensure corrosion protection. The bursting element 9 of the second bursting device 3 is sealed at the opening of its pressure-resistant housing 11 on the side of the vacuum reservoir 4. The second bursting device 3, the vacuum reservoir 4, and the bursting laboratory 1 together form the basic functional structure of the extremely fast bursting device in extremely fast burst mode. A second inflation tube 13 is connected to the outside of the second bursting device 3, which serves to inflate gas into the pressure-resistant housing 11 of the second bursting device 3.By means of an air pump, the gas from the gas source is pumped through the second pumping tube 13 into the pressure-resistant housing 11 of the second bursting device 3, and a hand valve, a solenoid valve, a flow meter and the like are installed on the pressure-resistant housing 11 of the second bursting device 3.

[0018] The pressure-resistant housing 11 of the first bursting device 6 has a tubular shape, and its bursting element 9 is sealed in the center of its pressure-resistant housing 11. The volume of the pressure-resistant housing 11 of the first bursting device 6 is smaller than the volume of the pressure-resistant housing 11 of the second bursting device 3. The first bursting device 6 can be fully opened within 800 milliseconds to ensure that the air pressure between the bursting laboratory 1 and the vacuum reservoir 4 reaches equilibrium within 1 to 1.5 seconds in the rapid bursting experiment.

[0019] The vacuum reservoir 4 is a hollow container made of pressure vessel steel sheet and subsequently coated with a plastic spray powder coating to ensure corrosion protection. A pressure gauge is installed on the vacuum reservoir 4. The vacuum reservoir 4 has a sufficient volume ratio, according to the test conditions, to both the burst laboratory 1 and the second burst device 3, in order to provide a stable vacuum environment for the extremely fast burst device and the fast burst device during the experiments.

[0020] The adjusting device 5 is a valve structure used to regulate the size of the burst channel to ensure that the burst time in the rapid burst experiment can be set between 1 and 1.5 seconds.

[0021] The vacuum unit box 7 serves to evacuate the vacuum reservoir 4. The vacuum unit box 7 is connected to the vacuum reservoir 4 via a vacuum line, and the low-pressure function in the vacuum reservoir is controlled by a PLC system. The vacuum unit box 7 comprises a housing 74 and two evacuation systems installed in the housing 74. The evacuation system includes a vacuum pump 71, a check valve 72, and a frequency converter 73. The suction end of the vacuum pump 71 is connected to the interior of the vacuum reservoir 4 via a pipe. The check valve 72 is mounted on the pipe between the vacuum pump 71 and the vacuum reservoir 4 to ensure a directed gas flow from the vacuum reservoir 4 to the vacuum pump 71. The frequency converter 73 is installed in the housing 74 to control the speed of the drive motor of the vacuum pump 71. Working principle: I. Rapid bursting experiment: The experiment is primarily carried out using the burst laboratory 1, the vacuum reservoir 4, the long tube, the adjustment device 5, and the first burst device 6 on the long tube in the fast burst mode. The specific steps are as follows: (1) First, the sealing vane valve 2 is completely closed, and the vacuum unit box 7 is used to reduce the air pressure level in the vacuum reservoir 4 to a set value and to maintain this air pressure level constant. (2) The test objects or test animals are then placed in the burst laboratory 1, and then gas is pumped into the burst laboratory 1 through the first pumping tube 12 to adjust the air pressure inside the burst laboratory 1 to a set level. (3) Once the air pressure levels in burst laboratory 1 and in the vacuum reservoir 4 have stabilized, the valve opening degree of the adjusting device 5 is set according to the test time requirements. After the adjusting device 5 has reached the set value, the drive mechanism of the first bursting device 6 is started, causing the impact device 10 to swing downwards and break the bursting element 9, opening the first bursting device 6, and allowing the air pressure levels in burst laboratory 1 and in the vacuum reservoir 4 to reach equilibrium within 1 to 1.5 seconds. (4) After the experimental data have been recorded, all individual components of the device are returned to their state prior to the experiment, and then the experimental device is switched off. II. Extremely fast burst experiment: The experiment is primarily carried out using burst laboratory 1, the vacuum reservoir 4, the short tube, and the second burst device 3 on the short tube in the extremely fast burst mode. The specific steps are as follows: (1) First, the sealing wing valve 2 is fully opened and the adjusting device 5 is fully closed. Inside the second bursting device 3, the bursting element 9 is installed and pressed down with the pressing device 8, and the impact device 10 is set to the test position (the impact hammer is raised and moved away from the bursting element 9). (2) Subsequently, the vacuum unit box 7 is used to reduce the air pressure level in the vacuum reservoir 4 to a set value and to maintain this air pressure level constant. (3) The test objects or animals are then placed in the burst laboratory 1, and gas is then pumped into the burst laboratory 1 through the first pumping tube 12 to adjust the air pressure inside the burst laboratory 1 to a set level. (4) After the air pressure levels in the burst laboratory 1 and in the vacuum reservoir 4 have stabilized, the drive unit of the second burst device 3 is started, causing the impact device 10 to swing downwards and break the bursting element 9, the second burst device 3 to open rapidly and the air pressure levels in the burst laboratory 1 and in the vacuum reservoir 4 to reach equilibrium within 200 milliseconds. (5) After the experimental data have been recorded, all individual components of the device are returned to their state prior to the experiment, and then the experimental device is switched off.

[0022] The parts of this utility model not explained in detail are conventional techniques known to a person skilled in the art.

[0023] It should be noted that the term “include”, “contain”, or any other variant is intended to encompass non-exclusive inclusion, so that a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not explicitly listed or elements inherent to that process, method, article, or device.

[0024] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modification, equivalent replacement, improvement, and the like made to the above embodiments based on the technical nature of this utility model fall within the scope of protection of this utility model.

Claims

[1] A rapid pressure relief system comprising a burst laboratory (1), a sealing vane valve (2), a second burst device (3), a vacuum reservoir (4), an adjustment device (5) for regulating the size of the burst channel, a first burst device (6) and a vacuum unit box (7) for evacuating the vacuum reservoir (4), characterized by , that two pipes are connected between the burst laboratory (1) and the vacuum reservoir (4), one of the pipes being a short pipe and the other a long pipe; the sealing vane valve (2) and the second bursting device (3) are mounted on the short pipe, the sealing vane valve (2) being arranged between the burst laboratory (1) and the second bursting device (3); the adjusting device (5) and the first bursting device (6) are mounted on the long pipe, the first bursting device (6) being arranged between the burst laboratory (1) and the adjusting device (5). [2] The system for rapid pressure relief according to claim 1, characterized by , that the burst laboratory (1) is a square cabin enclosure. [3] The system for rapid pressure relief according to claim 1, characterized by, that both the first bursting device (6) and the second bursting device (3) each comprise a pressure device (8), a bursting element (9), an impact device (10) and a pressure-resistant housing (11); the pressure-resistant housing (11) has a hollow structure with open ends; the bursting element (9) is made of pressure-resistant, brittle material and is detachably mounted in the pressure-resistant housing (11) to separate the interior of the pressure-resistant housing (11); the pressure device (8) consists of several pressure plates, one end of each pressure plate being fixed inside the pressure-resistant housing (11) and the other end being pressed against the bursting element (9); the impact device (10) is mounted in the pressure-resistant housing (11) and arranged according to the position of the bursting element (9), and the impact device (10) is movable under external force in the direction of the bursting element (9) in order to break the bursting element (9). [4] The system for rapid pressure relief according to claim 3, characterized by , that the pressure-resistant housing (11) of the first bursting device (6) has a tubular shape, and its bursting element (9) is sealed in the middle of its pressure-resistant housing (11); the pressure-resistant housing (11) of the second bursting device (3) has a square box shape, and its bursting element (9) is sealed at the opening of its pressure-resistant housing (11) on the side of the vacuum reservoir (4). [5] The rapid pressure relief system according to claim 4, characterized by , that the volume of the pressure-resistant housing (11) of the first bursting device (6) is smaller than the volume of the pressure-resistant housing (11) of the second bursting device (3). [6] The rapid pressure relief system according to claim 4, characterized by, that manometers are installed on the burst laboratory (1), the second burst device (3) and the vacuum reservoir container (4). [7] The system for rapid pressure relief according to claim 3, characterized by , that the impact device (10) comprises a pivot axis, a rocker arm, an impact hammer and a drive unit; the pivot axis is rotatably mounted in the pressure-resistant housing (11); one end of the rocker arm is fixedly connected to the pivot axis and can move closer to or away from the bursting element (9) with the rotation of the pivot axis; the impact hammer is mounted at the other end of the rocker arm and can move closer to or away from the bursting element (9) with the rocker arm; the drive unit is mounted outside the pressure-resistant housing (11) and can rotate the pivot axis. [8] The system for rapid pressure relief according to claim 7, characterized bythat the drive device is an electric motor, a hydraulic rod, an air cylinder or an electric cylinder. [9] The rapid pressure relief system according to claim 7, characterized by , that impact needles are provided on the surface of the impact hammer which serves to break up the bursting element (9). [10] The rapid pressure relief system according to claim 1, characterized bythat the vacuum unit box (7) comprises a housing (74) and at least one evacuation system installed in the housing (74); the evacuation system comprises a vacuum pump (71), a check valve (72) and a frequency converter (73); the suction end of the vacuum pump (71) is connected to the interior of the vacuum reservoir (4) via a pipe; the check valve (72) is mounted on the pipe between the vacuum pump (71) and the vacuum reservoir (4) to ensure a directed gas flow from the vacuum reservoir (4) into the vacuum pump (71); the frequency converter (73) is installed in the housing (74) to control the speed of the drive motor of the vacuum pump (71).

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