Comprehensive test system for calibrating breather valve

Abstract

The utility model relates to the technical field of breather valve detection, in particular to a comprehensive test system for calibrating a breather valve. Comprising a suction valve module provided with a suction valve element capable of being opened under rated pressure; the exhalation valve module is arranged on one side of the suction valve module, and an air outlet pipe of the exhalation valve module is communicated with an air outlet pipe of the suction valve module; the exhalation valve module is provided with a suction valve element capable of being opened under rated pressure, sealing liquid capable of sealing the exhalation valve element when the exhalation valve element is not opened, and a liquid level instrument capable of detecting the liquid level of the sealing liquid. The air supply module is arranged on one side of the exhalation valve module and communicates with an air inlet of the exhalation valve module; the gas supply module is provided with a first gas storage tank and a second gas storage tank which can be used for caching a gas source, and a transmission unit which can be used for transmitting the gas source; the detection module is coaxially arranged on the transmission unit; the breather valve can be comprehensively detected according to detection requirements, the detection efficiency is high, and the precision is high.

Description

Technical Field

[0001] This utility model relates to the field of breathing valve testing technology, specifically to a comprehensive testing system for calibrating breathing valves. Background Technology

[0002] As a critical safety accessory in atmospheric pressure storage tanks, the breather valve is mainly used to regulate the pressure balance during the gas inlet and outlet processes, preventing tank damage or collapse caused by excessively high or low pressure. To ensure its reliability, sealing performance, and opening / closing sensitivity in actual use, the breather valve must be calibrated and its performance tested before leaving the factory or during regular maintenance.

[0003] Current testing methods for breather valves generally suffer from problems such as limited testing methods, low efficiency, and unquantifiable test parameters, making it difficult to comprehensively reflect the response characteristics of breather valves under different operating conditions. In addition, most existing test benches fail to effectively simulate the complex gas pressure environment of storage tank sites, making it impossible to comprehensively evaluate multiple indicators such as inhalation pressure, exhalation pressure, sealing performance, and action delay, resulting in deviations between test results and actual operating conditions.

[0004] Especially with the widespread application of liquid-sealed or high-precision breather valves, traditional manual or semi-automatic testing equipment can hardly meet the requirements for rapid switching and high-precision testing of multiple parameters, multiple valve types, and multiple pressure ranges. Utility Model Content

[0005] To address the aforementioned issues, a comprehensive testing system for calibrating breathing valves is provided. This system improves upon existing testing benches by providing a rationally structured and fully functional digitized comprehensive testing bench capable of simultaneously performing dynamic simulations and automatic tests of multiple operating conditions, including inhalation pressure, expiratory pressure, sealing performance, and leakage. This solves the technical problem that existing testing benches cannot comprehensively evaluate multiple indicators such as inhalation pressure, expiratory pressure, sealing performance, and action delay, leading to deviations between test results and actual operating conditions.

[0006] To address the problems of existing technologies, this utility model provides a comprehensive testing system for calibrating a breathing valve, comprising: a suction valve module, equipped with a suction valve core capable of opening under rated pressure; a breathing valve module, disposed on one side of the suction valve module and connected to the outlet pipe of the suction valve module; the breathing valve module is equipped with a suction valve core capable of opening under rated pressure, a sealing liquid capable of sealing the breathing valve core when it is not open, and a level gauge capable of detecting the level of the sealing liquid; a gas supply module, disposed on one side of the breathing valve module and connected to the air inlet of the breathing valve module; the gas supply module is equipped with a first gas storage tank and a second gas storage tank capable of buffering the gas source, and a transmission unit capable of transmitting the gas source; and a detection module, coaxially disposed on the transmission unit and located close to the breathing valve module.

[0007] Preferably, the transmission unit further includes a first transmission pipe section and a second transmission pipe section capable of transmitting gas; the first gas storage tank and the second gas storage tank are connected through the first transmission pipe section; the second gas storage tank and the exhalation valve module are connected through the second transmission pipe section.

[0008] Preferably, the transmission unit is further provided with a low-pressure gas source generator, a medium-pressure gas source generator and a high-pressure gas source generator capable of generating gas sources of different pressures.

[0009] Preferably, the first transmission pipe section is provided with a first transmission pipe and a second transmission pipe, as well as a first ball valve and a second ball valve that can control the opening and closing of the first transmission pipe and the second transmission pipe respectively; the low-pressure gas source generator is disposed on one side of the first gas storage tank and is connected to the first gas storage tank; the medium-pressure gas source generator is disposed on one side of the first gas storage tank and is connected to the second transmission pipe.

[0010] Preferably, the second transmission pipe section is provided with a third transmission pipe and a fourth transmission pipe, as well as a third ball valve and a fourth ball valve that can control the opening and closing of the third transmission pipe and the fourth transmission pipe respectively; the high-pressure gas source generator is located on one side of the second gas storage tank and is connected to the fourth transmission pipe.

[0011] Preferably, the detection module is equipped with a flow meter and an anemometer that can detect the air source transmission pressure and flow rate respectively.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. This utility model integrates air supply modules with three different pressure levels: low pressure, medium pressure, and high pressure. It can perform precise testing of key performance indicators such as opening pressure, pressure relief stability, and maximum air flow of the breathing valve throughout the entire cycle and in multiple dimensions, meeting the calibration requirements under various working conditions.

[0014] 2. This utility model achieves flexible switching and control of gas supply path, gas source flow rate and gas supply time by setting up multi-stage gas storage tanks in series and segmented ball valve control, so as to ensure the stability and repeatability of the detection process.

[0015] 3. By installing flow meters and anemometers in the transmission pipeline, this utility model can acquire flow and wind speed data of the air source under different pressure conditions in real time, improve the accuracy and response speed of data acquisition, and facilitate the scientific evaluation of the performance of the breathing valve. Attached Figure Description

[0016] Figure 1 This is a top view of a comprehensive test system used for calibrating breather valves.

[0017] Figure 2This is a cross-sectional view of the exhalation valve module and the inhalation valve module in a comprehensive test system for calibrating breathing valves.

[0018] Figure 3 It is a three-dimensional comprehensive test system for calibrating breather valves. Figure 1 .

[0019] Figure 4 It is a three-dimensional comprehensive test system for calibrating breather valves. Figure 2 .

[0020] The numbers on the map are:

[0021] 1-Suction valve module; 11-Suction valve core;

[0022] 2-Call valve module; 21-Call valve core; 22-Sealing fluid; 23-Level gauge;

[0023] 3-Gas supply module; 31-First gas storage tank; 32-Second gas storage tank; 321-Pressure relief valve; 33-Transmission unit; 331-First transmission pipe section; 3311-First transmission pipe; 3312-Second transmission pipe; 3313-First ball valve; 3314-Second ball valve; 332-Second transmission pipe section; 3321-Third transmission pipe; 3322-Fourth transmission pipe; 3323-Third ball valve; 3324-Fourth ball valve; 333-Low-pressure gas generator; 334-Medium-pressure gas generator; 335-High-pressure gas generator;

[0024] 4-Detection module; 41-Flow meter; 42-Anemometer. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 4 The diagram shows a comprehensive testing system for calibrating a breathing valve, comprising: a breathing valve module 1, equipped with a breathing valve core 11 capable of opening under rated pressure; a breathing valve module 2, disposed on one side of the breathing valve module 1 and connected to the outlet pipe of the breathing valve module 1; the breathing valve module 2 is equipped with a breathing valve core 11 capable of opening under rated pressure, a sealing liquid 22 capable of sealing the breathing valve core 11 when it is not open, and a level gauge 23 capable of detecting the level of the sealing liquid 22; a gas supply module 3, disposed on one side of the breathing valve module 2 and connected to the inlet of the breathing valve module 2; the gas supply module 3 is equipped with a first gas storage tank 31 and a second gas storage tank 32 capable of buffering the gas source, and a transmission unit 33 capable of transmitting the gas source; and a detection module 4, coaxially disposed on the transmission unit 33 and disposed close to the breathing valve module 2.

[0027] When it is necessary to detect the flow and pressure parameters of the call valve module 2, the air supply module 3 is first activated to continuously supply an adjustable low-pressure air source to the call valve module 2. As the air source pressure gradually increases, when the valve core 21 of the call valve moves upward under the action of the air source, overcoming its own gravity and the resistance of the sealing fluid 22, the pressure relief port begins to discharge gas. At this time, by collecting and recording the gas pressure at the moment the valve core opens by the detection module 4, the minimum opening and closing pressure value of the call valve module 2 can be determined.

[0028] After completing the initial opening and closing pressure test, to verify the pressure relief reliability of the call valve core 21 under stable operating conditions, the air supply module 3 can be driven again to continuously supply a constant pressure air source to the call valve module 2. The opening height and its fluctuation trend of the valve core under constant pressure conditions are observed in real time by the detection module 4. If the pressure relief state remains stable, it indicates that the call valve module 2 has good steady-state pressure relief performance.

[0029] During continued testing, in order to evaluate the maximum conduction capacity of the exhalation valve module 2, the output pressure of the air supply module 3 can be increased and air can be continuously supplied to the exhalation valve module 2. The flow rate through the pressure relief port per unit time is measured by the detection module 4, thereby obtaining the maximum ventilation flow rate parameter of the exhalation valve module 2 under extreme operating conditions.

[0030] Finally, if it is necessary to test the performance of the suction valve module 1, it is only necessary to apply low pressure, constant pressure and high pressure suction processes to it in sequence according to the opening and closing characteristics of the suction valve module 1. The opening pressure point, stable air supply state and maximum air intake flow of the suction valve module 1 are recorded by the detection module 4 to complete the test and evaluation of its key performance indicators.

[0031] By using a phased, full-parameter testing method, the minimum opening pressure, operational stability, and maximum flow conduction capacity of the exhalation valve module 2 and the suction valve module 1 were accurately tested, ensuring the performance reliability and safety of the breathing valve under actual working conditions. This method is suitable for factory acceptance and on-site maintenance testing scenarios for various valve types.

[0032] The top of the second gas storage tank 32 is also provided with a pressure relief valve 321, which can be used to regulate the gas flow and pressure entering the exhalation valve.

[0033] The lifting state of the suction valve core 11 during operation has dynamic changes. To achieve accurate monitoring of its different lifting heights, a level gauge 23 is installed and connected to the liquid-sealed cavity where the exhalation valve core 21 is located. The level gauge 23 senses the changes in the level of the sealing fluid 22 in real time, thereby reflecting the corresponding lifting height reached by the exhalation valve core 21 under different air source pressures. As the exhalation valve core 21 moves upward under pressure, the sealing fluid 22 at its bottom will fluctuate in level with the upward movement of the exhalation valve core 21. The level gauge 23 obtains the lifting height change data based on this level change, realizing dynamic monitoring of the entire working state of the exhalation valve core 21.

[0034] See Figure 3 As shown: The transmission unit 33 further includes a first transmission pipe section 331 and a second transmission pipe section 332 capable of transmitting gas; the first gas storage tank 31 and the second gas storage tank 32 are connected through the first transmission pipe section 331; the second gas storage tank 32 and the exhalation valve module 2 are connected through the second transmission pipe section 332.

[0035] When it is necessary to detect the opening pressure of the exhalation valve core 21, an external air source is first connected. The generated compressed gas is transmitted to the first air storage tank 31 for initial storage and pressure stabilization. Then, the air source is transmitted to the second air storage tank 32 via the first transmission pipe section 331. In the second air storage tank 32, the pressure is further buffered and the flow rate is regulated. Finally, the air source is stably and continuously delivered to the exhalation valve module 2 via the second transmission pipe section 332.

[0036] As air is continuously injected into the exhalation valve module 2, the internal air pressure gradually increases, eventually causing the exhalation valve core 21 to move upwards under the condition of overcoming its own gravity and sealing resistance, thus realizing the opening and closing action. By recording the air pressure inside the pipe at the moment of valve core opening and closing by the synchronous detection module 4, the actual opening pressure parameter of the exhalation valve core 21 can be accurately obtained.

[0037] By connecting the first gas storage tank 31 and the second gas storage tank 32 in series to form a graded pressure-stabilizing gas storage system, it can achieve buffer pressure stabilization at the initial stage of gas source output, and provide a continuous and stable gas source supply under short-term high flow output demand, significantly improving the dynamic performance of the entire gas source system in terms of pressure response and flow maintenance.

[0038] By setting up a two-stage gas storage buffer structure, the gas source is stabilized and dynamically compensated in stages during the opening pressure detection process, which effectively ensures that the valve core 21 of the call valve opens and closes accurately under controlled gas pressure, and significantly improves the accuracy of opening pressure detection and the stability of system response.

[0039] See Figure 1As shown: The transmission unit 33 is also equipped with a low-pressure gas source generator 333, a medium-pressure gas source generator 334 and a high-pressure gas source generator 335, which are capable of generating gas sources with different pressures.

[0040] The low-pressure air source generator 333 is specifically an air compressor; the medium-pressure air source generator 334 is specifically a small-power fan; and the high-pressure air source generator 335 is specifically a large-power fan.

[0041] The low-pressure gas generator 333, medium-pressure gas generator 334, and high-pressure gas generator 335 correspond to different pressure levels of gas supply requirements and are used to provide controllable and stable graded gas supply support during multi-condition testing of the call valve module 2. Specifically, the low-pressure gas generator 333 simulates the small pressure difference environment during the initial opening stage of the call valve to detect the minimum opening pressure of the valve core 21; the medium-pressure gas generator 334 provides a constant and stable medium pressure to adapt to the pressure relief flow and pressure relief stability testing of the call valve under normal operating conditions; and the high-pressure gas generator 335 simulates extreme or upper limit operating conditions, using high-pressure gas input to test the maximum pressure-bearing flow capacity and ultimate exhaust state of the call valve.

[0042] See Figure 4 As shown: the first transmission pipe section 331 is provided with a first transmission pipe 3311 and a second transmission pipe 3312, as well as a first ball valve 3313 and a second ball valve 3314 that can respectively control the opening and closing of the first transmission pipe 3311 and the second transmission pipe 3312; the low-pressure gas source generator 333 is disposed on one side of the first gas storage tank 31 and is connected to the first gas storage tank 31; the medium-pressure gas source generator 334 is disposed on one side of the first gas storage tank 31 and is connected to the second transmission pipe 3312.

[0043] The first transmission pipe 3311 is connected between the first gas storage tank 31 and the second gas storage tank 32; the second transmission pipe 3312 is located on one side of the second gas storage tank 32 and is connected to the second gas storage tank 32; the second ball valve 3314 is located on the second transmission pipe 3312.

[0044] When it is necessary to test the pressure relief stability of the call valve module 2, the first ball valve 3313 located on the low-pressure air supply channel is first closed to ensure that the low-pressure air source is isolated; at the same time, the second ball valve 3314 located on the medium-pressure air supply channel is opened to establish a medium-pressure air supply path. Subsequently, the medium-pressure air source generator 334 is driven to start and output a constant pressure air source. The air source is continuously introduced into the call valve module 2 through the second air path channel, thereby driving the call valve core 21 to gradually rise to the preset opening height under the action of stable air pressure. At this time, the displacement state and pressure relief process of the call valve core 21 under constant pressure are continuously monitored by the detection module 4 to observe whether it maintains the stability of the pressure relief height under the rated pressure condition, and thus determine whether the pressure relief stability performance of the call valve core 21 under normal operating conditions meets the standard requirements.

[0045] See Figure 1 and 4 As shown: The second transmission pipe section 332 is provided with a third transmission pipe 3321 and a fourth transmission pipe 3322, as well as a third ball valve 3323 and a fourth ball valve 3324 that can control the opening and closing of the third transmission pipe 3321 and the fourth transmission pipe 3322 respectively; the high-pressure gas source generator 335 is located on one side of the second gas storage tank 32 and is connected to the fourth transmission pipe 3322.

[0046] When it is necessary to test the maximum air supply flow rate and pressure resistance of the exhalation valve module 2, the first ball valve 3313 and the second ball valve 3314 in the low-pressure and medium-pressure air supply paths are first closed to ensure complete isolation between the low-pressure and medium-pressure air supply channels. Then, the third ball valve 3323 and the fourth ball valve 3324 in the high-pressure air supply path are opened to establish a complete high-pressure transmission channel. At this time, the high-pressure air source generator 335 is started and outputs high-pressure gas at the set pressure level. The generated high-pressure air source is sequentially stabilized and regulated by the second air storage tank 32, and continues to be conducted along the third transmission pipe 3321, finally entering the exhalation valve module 2. By continuously loading high-pressure gas into the exhalation valve module 2, the exhalation valve core 21 can be driven to the limit opening state. At the same time, the detection module 4 monitors parameters such as gas flow rate, valve core displacement, and system pressure in real time, and finally achieves a comprehensive evaluation of the maximum flow rate and pressure response capability that the exhalation valve module 2 can withstand under extreme working conditions.

[0047] By precisely switching and controlling the high-pressure gas supply path, combined with the high-pressure gas storage and transmission system, the working state of the exhalation valve under extreme conditions can be safely and effectively simulated, enabling comprehensive testing of its maximum flow carrying capacity and ultimate opening pressure.

[0048] See Figure 4 As shown: The detection module 4 is equipped with a flow meter 41 and an anemometer 42, which can detect the air source transmission pressure and flow rate respectively.

[0049] The flow meter 41 and the anemometer 42 are coaxially fixed in the internal channel of the third transmission pipe 3321 along the airflow direction. The flow meter 41 is used to measure the flow rate of the gas source delivered to the exhalation valve module 2 via the third transmission pipe 3321 in real time. The anemometer 42 is located downstream of the flow meter 41 to simultaneously collect the instantaneous wind speed data of the flowing gas. The two work together to achieve precise monitoring of the flow state and transmission efficiency of the high-pressure gas source during transmission. The measurement data is then output to the system control terminal in real time via the detection module 4, facilitating dynamic analysis and accuracy assessment by the operator.

[0050] By installing a flow meter 41 and an anemometer 42 in the third transmission pipe 3321, it is possible not only to accurately grasp the flow rate changes and wind speed status during the gas source transmission process, but also to realize dynamic monitoring of the response characteristics of the exhalation valve module 2 under different gas supply pressure conditions.

[0051] This invention can perform comprehensive testing of breathing valves according to testing requirements, with fast testing efficiency and high accuracy.

[0052] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A comprehensive testing system for calibrating a breathing valve, characterized in that, include: The suction valve module is equipped with a suction valve core that can be opened under rated pressure; The exhalation valve module is located on one side of the suction valve module and its outlet pipe is connected to the outlet pipe of the suction valve module. The exhalation valve module is equipped with a suction valve core that can be opened under rated pressure, a sealing liquid that can seal the exhalation valve core when it is not opened, and a level gauge that can detect the level of the sealing liquid. An air supply module is disposed on one side of the exhalation valve module and connected to the air inlet of the exhalation valve module; the air supply module is provided with a first air storage tank and a second air storage tank capable of buffering the air source and a transmission unit capable of transmitting the air source. The detection module is coaxially mounted on the transmission unit and positioned close to the exhalation valve module.

2. The comprehensive test system for calibrating a breathing valve according to claim 1, characterized in that, The transmission unit further includes a first transmission pipe section and a second transmission pipe section capable of transmitting the gas source. The first gas storage tank and the second gas storage tank are connected by a first transmission pipeline section. The second gas storage tank and the exhalation valve module are connected by a second transmission pipeline.

3. The comprehensive test system for calibrating a breathing valve according to claim 2, characterized in that, The transmission unit is also equipped with a low-pressure gas source generator, a medium-pressure gas source generator, and a high-pressure gas source generator capable of generating gas sources of different pressures.

4. The comprehensive test system for calibrating a breathing valve according to claim 3, characterized in that, The first transmission pipe section is provided with a first transmission pipe and a second transmission pipe, as well as a first ball valve and a second ball valve that can control the opening and closing of the first transmission pipe and the second transmission pipe respectively. The low-pressure gas generator is located on one side of the first gas storage tank and is connected to the first gas storage tank. The medium-pressure gas generator is located on one side of the first gas storage tank and is connected to the second transmission pipe.

5. A comprehensive test system for calibrating a breathing valve according to claim 3, characterized in that, The second transmission pipe section is provided with a third transmission pipe and a fourth transmission pipe, as well as a third ball valve and a fourth ball valve that can control the opening and closing of the third transmission pipe and the fourth transmission pipe respectively. The high-pressure gas generator is located on one side of the second gas storage tank and is connected to the fourth transmission pipe.

6. The comprehensive test system for calibrating a breathing valve according to claim 1, characterized in that, The detection module is equipped with a flow meter and an anemometer that can detect the air source transmission pressure and flow rate respectively.

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