Intelligent pressurizing detection system for pneumatic valve and regulating valve

Abstract

The utility model relates to the technical field of pneumatic valves, and particularly discloses an intelligent pressure detection system for a pneumatic valve and a regulating valve, which comprises a valve body, two sides of the valve body are respectively connected with an air inlet pipe and an air outlet pipe, and the top of the air inlet pipe is respectively provided with a pressure transmitter I and a flow sensor I; a second pressure transmitter and a second flow sensor are installed on the top of the air outlet pipe, and a valve element is installed in the valve body. The PLC is used for controlling the pneumatic actuator to operate and the valve element to be closed, the displacement sensor is used for monitoring the movement track of the valve element in the process, the pneumatic booster pump is started to fill compressed air into the air inlet pipe, after the compressed air is filled in, the first pressure transmitter is started to detect the pressure of the air, and the second pressure transmitter is started to detect the pressure of the air. After the set time of sending the detection value to the HMI touch screen is up, the initial detection data of the first pressure transmitter is compared with the final detection data to judge the pressure maintaining effect of the pneumatic valve.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic valve technology, specifically to an intelligent pressure testing system for pneumatic valves and regulating valves. Background Technology

[0002] Pneumatic valves are valves that use compressed air to drive multiple sets of combined pneumatic pistons in the actuator.

[0003] When performing pressure holding tests on pneumatic valves, the valves need to be pressurized. Traditional pressure holding tests require repeated opening and closing, which accelerates the friction between the valve core and valve seat, leading to wear of the seals and increasing the risk of leakage. Furthermore, the slow response speed affects the control accuracy of the dynamic pressure during the pressure holding test. Therefore, to solve these problems, we propose an intelligent pressure testing system for pneumatic valves and regulating valves. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an intelligent pressure testing system for pneumatic valves and regulating valves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pneumatic valve and regulating valve intelligent pressure testing system includes a valve body. An inlet pipe and an outlet pipe are connected to both sides of the valve body. A pressure transmitter and a flow sensor are installed at the top of the inlet pipe, and a pressure transmitter and a flow sensor are installed at the top of the outlet pipe. A valve core is installed inside the valve body, with a pneumatic actuator installed at the top of the valve core penetrating the valve body. Sealing components, including sealing plugs, are installed on the opposite sides of the inlet and outlet pipes. Pressure transmitters one, flow sensors one, two, and two flow sensors are all bidirectionally electrically connected to a PLC controller. The PLC controller is bidirectionally electrically connected to a displacement sensor. The output of the PLC controller is electrically connected to the input of the pneumatic actuator. The output of the PLC controller is electrically connected to a pneumatic booster pump and an HMI touchscreen. The HMI touchscreen is bidirectionally connected to a data storage device, and its output is electrically connected to an audible and visual alarm.

[0007] Preferably, flanges are fitted on the outer sides of the air inlet pipe and the air outlet pipe that are far apart from each other, and the inner and outer diameters of the air inlet pipe and the air outlet pipe are the same.

[0008] Preferably, the displacement sensor is mounted on the valve core, and the data storage and audible and visual alarm are both mounted on the HMI touchscreen.

[0009] Preferably, the outer sides of the two sealing plugs are threaded to the inner walls of the air inlet pipe and the air outlet pipe, respectively, and a sealing disc is connected to the side of the two sealing plugs that are far apart from each other.

[0010] Preferably, each of the two sealing discs is connected to a connecting pipe on the side furthest from each other, and each of the two connecting pipes is fitted with a quick connector on the side furthest from each other.

[0011] Preferably, the quick connector has an internal gas supply pipe, and the internal gas supply pipe has a one-way valve, with the two one-way valves having the same conduction direction.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes the combined use of an inlet pipe, flow sensor one, flow sensor two, sealing components, outlet pipe, pressure transmitter two, pneumatic actuator, pressure transmitter one, PLC controller, pneumatic booster pump, data storage, displacement sensor, HMI touchscreen, and audible and visual alarm. The PLC controller controls the pneumatic actuator to close the valve core. During this process, the displacement sensor monitors the movement trajectory of the valve core. The pneumatic booster pump is activated to inject compressed air into the inlet pipe. After the compressed air enters, pressure transmitter one activates to detect the air pressure. The detected value is sent to the HMI touchscreen. After a set time, the initial and final detection data from pressure transmitter one are compared to determine the pressure-holding effect of the pneumatic valve. Furthermore, a pneumatic actuator can be used to open the valve core, simultaneously activating flow sensor one, flow sensor two, pressure transmitter one, and pressure transmitter two. Flow sensor one and pressure transmitter one detect the air pressure and flow rate flowing into the inlet pipe, while flow sensor two and pressure transmitter two detect the air pressure and flow rate flowing into the outlet pipe. The detected data is transmitted to the PLC controller and then to the HMI touchscreen. The pressure-holding effect of the pneumatic valve is determined based on the difference between the preceding and following data. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0015] Fig. 2 This is a schematic diagram of the sealing component structure of this utility model;

[0016] Fig. 3 This is a schematic diagram of the system of this utility model.

[0017] In the diagram: 1. Inlet pipe; 2. Flow sensor one; 3. Valve body; 4. Flow sensor two; 5. Sealing component; 51. Connecting pipe; 52. Sealing plug; 53. Sealing disc; 54. Gas delivery pipe; 55. Quick connector; 6. Flange; 7. Outlet pipe; 8. Pressure transmitter two; 9. Pneumatic actuator; 10. Valve core; 11. Pressure transmitter one; 12. PLC controller; 13. Pneumatic booster pump; 14. Data storage device; 15. Displacement sensor; 16. HMI touch screen; 17. Audible and visual alarm. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figs. 1-3 A pneumatic valve and regulating valve intelligent pressure testing system includes a valve body 3. An inlet pipe 1 and an outlet pipe 7 are connected to opposite sides of the valve body 3. A pressure transmitter 11 and a flow sensor 2 are mounted on the top of the inlet pipe 1, and a pressure transmitter 8 and a flow sensor 4 are mounted on the top of the outlet pipe 7. A valve core 10 is installed inside the valve body 3, with a pneumatic actuator 9 mounted on the top of the valve core 10 penetrating the valve body 3. Sealing components 5, including sealing plugs 52, are installed on the opposite sides of the inlet pipe 1 and outlet pipe 7. Pressure transmitter 11, flow sensor 12, pressure transmitter 28, and flow sensor 24 are all bidirectionally electrically connected to PLC controller 12. PLC controller 12 is bidirectionally electrically connected to displacement sensor 15. The output of PLC controller 12 is electrically connected to the input of pneumatic actuator 9. The output of PLC controller 12 is electrically connected to pneumatic booster pump 13 and HMI touch screen 16 respectively. HMI touch screen 16 is bidirectionally connected to data storage 14. The output of HMI touch screen 16 is electrically connected to audible and visual alarm 17.

[0020] As a technical optimization of this utility model, flanges 6 are fitted on the outer sides of the air inlet pipe 1 and the air outlet pipe 7 that are far apart from each other. The inner and outer diameters of the air inlet pipe 1 and the air outlet pipe 7 are the same. The flanges 6 facilitate the connection of the pneumatic valve to the external pipeline.

[0021] As a technical optimization of this utility model, the displacement sensor 15 is installed on the valve core 10, and the data storage 14 and the audible and visual alarm 17 are both installed on the HMI touch screen 16; through the data storage 14, various types of data can be stored for easy retrieval later.

[0022] As a technical optimization of this utility model, the outer sides of the two sealing plugs 52 are respectively threaded to the inner walls of the air inlet pipe 1 and the air outlet pipe 7, and the two sealing plugs 52 are connected to a sealing disc 53 on the side that is far apart from each other; through the cooperation of the sealing plugs 52 and the sealing disc 53, the air inlet pipe 1 and the air outlet pipe 7 can be sealed.

[0023] As a technical optimization of this utility model, each of the two sealing discs 53 is connected to a connecting pipe 51 on the side away from each other, and each of the two connecting pipes 51 is fitted with a quick connector 55 on the side away from each other; the quick connector 55 facilitates quick connection between the gas supply pipe 54 and the connecting pipe 51.

[0024] As a technical optimization of this utility model, a gas supply pipe 54 is inserted into the quick connector 55, and a one-way valve is installed inside the gas supply pipe 54. The two one-way valves have the same conduction direction; the side of the gas supply pipe 54 on the left side away from the quick connector 55 is connected to the pneumatic booster pump 13.

[0025] When using this invention, to measure the pressure holding performance of the pneumatic valve, the sealing plugs 52 of the two sealing components 5 are rotated and installed inside the inlet pipe 1 and outlet pipe 7, respectively. One side of the left air supply pipe 54 is connected to the pneumatic booster pump 13. The pneumatic actuator 9 is controlled by the PLC controller 12 to close the valve core 10. During this process, the displacement sensor 15 monitors the movement trajectory of the valve core 10 to ensure that the valve core 10 is completely closed. The pneumatic booster pump 13 is turned on to fill the inlet pipe 1 with compressed air through the left air supply pipe 54, quick connector 55, and connecting pipe 51. After the compressed air is injected... The PLC controller 12 controls the pressure transmitter 11 to turn on, using the pressure transmitter 11 to detect the air pressure. The detected value is sent to the PLC controller 12, which then sends the data to the HMI touch screen 16 and stores the data in the data memory 14. After the set time is reached, the initial and final detection data of the pressure transmitter 11 are compared to determine the pressure holding effect of the pneumatic valve. If the pressure holding effect is not up to standard, the audible and visual alarm 17 is activated. After the pressure holding test, the valve core 10 is opened to open the pneumatic valve, and the gas flows into the outlet pipe 7 and is finally discharged through the right-side air supply pipe 54.

[0026] Furthermore, the pneumatic actuator 9 is used to open the valve core 10, and simultaneously the flow sensor 2, flow sensor 4, pressure transmitter 11, and pressure transmitter 8 are activated. The air supply pipe 54 on the left side is connected to the pneumatic booster pump 13, and the pneumatic booster pump 13 is activated. The flow sensor 2 and pressure transmitter 11 detect the air pressure and flow rate flowing into the air inlet pipe 1, respectively. The flow sensor 4 and pressure transmitter 8 detect the air pressure and flow rate flowing into the air outlet pipe 7, respectively. The detected data is transmitted to the PLC controller 12 and then to the HMI touch screen 16. The pressure holding effect of the pneumatic valve is judged based on the difference between the data before and after.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A pneumatic valve and regulating valve intelligent pressure testing system, comprising a valve body (3), characterized in that: The valve body (3) is connected to an inlet pipe (1) and an outlet pipe (7) on both sides respectively. A pressure transmitter (11) and a flow sensor (2) are installed on the top of the inlet pipe (1) respectively. A pressure transmitter (8) and a flow sensor (4) are installed on the top of the outlet pipe (7) respectively. A valve core (10) is installed inside the valve body (3). A pneumatic actuator (9) is installed on the top of the valve core (10) through the valve body (3). A sealing component (5) is installed on the side of the inlet pipe (1) and the outlet pipe (7) that are far apart. The sealing component (5) includes a sealing plug (52). The pressure transmitter (11) and the outlet pipe (7) are connected to an inlet pipe (11) and an outlet pipe (7) respectively. ), flow sensor 1 (2), pressure transmitter 2 (8) and flow sensor 2 (4) are all bidirectionally electrically connected to PLC controller (12). PLC controller (12) is bidirectionally electrically connected to displacement sensor (15). The output end of PLC controller (12) is electrically connected to the input end of pneumatic actuator (9). The output end of PLC controller (12) is electrically connected to pneumatic booster pump (13) and HMI touch screen (16) respectively. HMI touch screen (16) is bidirectionally connected to data storage (14). The output end of HMI touch screen (16) is electrically connected to audible and visual alarm (17).

2. The intelligent pressure testing system for pneumatic valves and regulating valves according to claim 1, characterized in that: The inlet pipe (1) and outlet pipe (7) are fitted with flanges (6) on the outer sides that are far apart from each other. The inner and outer diameters of the inlet pipe (1) and outlet pipe (7) are the same.

3. The intelligent pressure testing system for pneumatic valves and regulating valves according to claim 1, characterized in that: The displacement sensor (15) is mounted on the valve core (10), and the data storage (14) and the audible and visual alarm (17) are both mounted on the HMI touch screen (16).

4. The intelligent pressure testing system for pneumatic valves and regulating valves according to claim 1, characterized in that: The exterior of the two sealing plugs (52) are threaded to the inner walls of the air inlet pipe (1) and the air outlet pipe (7), respectively, and a sealing disc (53) is connected to the side of the two sealing plugs (52) that is far apart from each other.

5. The intelligent pressure testing system for pneumatic valves and regulating valves according to claim 4, characterized in that: Each of the two sealing discs (53) is connected to a connecting pipe (51) on the side away from each other, and each of the two connecting pipes (51) is fitted with a quick connector (55) on the side away from each other.

6. The intelligent pressure testing system for pneumatic valves and regulating valves according to claim 5, characterized in that: The quick connector (55) has an internal gas supply pipe (54) inserted into it. The gas supply pipe (54) has a one-way valve installed inside it. The two one-way valves have the same direction of conduction.

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