A high-temperature and high-pressure large-diameter butterfly valve test device, system and method for a ship

Abstract

This invention relates to the field of valve testing technology, and discloses a marine high-temperature and high-pressure large-diameter butterfly valve testing device, system, and method. The device includes a first container and a second container, each with multiple interfaces of different diameters. The two containers are sealed to the test valve through interfaces of the same diameter, enabling multi-diameter testing. Both containers are equipped with temperature and pressure sensors. An electric heating unit is installed inside the containers to provide a high-temperature environment. An external inflation unit is connected to the first container to provide a high-pressure environment. The second container has an exhaust unit equipped with a flow sensor and a bubble measuring device to detect valve leakage. The container of this invention integrates different diameter pipe interfaces, making it suitable for testing various butterfly valve specifications and applicable to a wide range of applications.

Description

Technical Field

[0001] This invention relates to the field of valve testing technology, and in particular to a testing device, system and method for marine high temperature and high pressure large-diameter butterfly valves. Background Technology

[0002] In the marine industry, to meet emission regulations, ships increasingly require SCR and EGR systems. High-temperature, high-pressure flue gas butterfly valves, as key components in SCR and EGR systems, directly undertake important functions such as flue gas flow regulation and system isolation. Most companies use imported high-temperature, high-pressure flue gas butterfly valves in their marine SCR and EGR systems; domestically developed products are still in their early stages and have not yet achieved large-scale, high-quality industrial application. This results in persistently high procurement costs for marine aftertreatment systems.

[0003] To achieve independent research and development of high-temperature, high-pressure flue gas butterfly valves, the core prerequisite is to ensure that the quality of independently developed products meets or even surpasses that of imported counterparts, and can meet the stringent operating requirements of marine SCR and EGR systems. Ensuring product quality relies heavily on scientific, comprehensive, and precise testing and inspection to promptly identify design flaws, material issues, or process deficiencies during the research and development process. Existing testing equipment has limited functionality, capable of testing only one type of butterfly valve. Testing butterfly valves of different diameters requires different models of testing equipment, resulting in poor versatility and indirectly increasing testing costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a marine high-temperature and high-pressure large-diameter butterfly valve testing device, system, and method. The container integrates pipe interfaces of different diameters, making it suitable for testing various specifications of butterfly valves and applicable to a wide range of applications.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In the first aspect, a marine high-temperature and high-pressure large-diameter butterfly valve testing device includes a first container and a second container. Both containers are provided with multiple interfaces of different diameters. The two containers are sealed to the test valve through the same diameter interface to realize multi-diameter testing. The two containers are equipped with temperature and pressure detection devices. The containers are equipped with an electric heating unit to provide a high-temperature environment. The first container is connected to an external inflation unit to provide a high-pressure environment. The second container is equipped with an exhaust unit, which is equipped with a flow sensor and a bubble measuring device to realize the test valve leakage detection.

[0006] As a further implementation, multiple interfaces of different diameters are fixed on the first and second containers, each interface diameter corresponding to a test valve of a different specification. It also includes corresponding blind flanges, used to seal interfaces that are not in use.

[0007] As a further implementation, the bottom of the first and second containers is provided with casters, which are equipped with self-locking devices; The ports of the same diameter on both containers are at the same height.

[0008] As a further implementation, the detection devices on the first and second containers are temperature sensors and pressure sensors.

[0009] As a further implementation, the inflation unit includes an inflation pipeline interface, one end of which is connected to the first container, and the other end is used to connect to a compressed air source. The inflation pipeline interface is equipped with a pressure regulating valve and a ball valve.

[0010] As a further implementation, the exhaust unit includes an exhaust pipe, one end of which is connected to the second container, and the other end is connected to two sets of branch exhaust pipes, each set of branch exhaust pipes being equipped with a ball valve.

[0011] As a further implementation, one set of branch exhaust pipes is equipped with a flow sensor, and the other set of branch exhaust pipes is equipped with a bubble detection device.

[0012] As a further implementation, a control unit is also included, which is connected to the detection element and the electric heating unit.

[0013] Secondly, a marine high-temperature and high-pressure large-diameter butterfly valve test system includes any of the test devices described above, and also includes a compressed air source connected to an air filling pipeline interface.

[0014] Thirdly, a test method for marine high-temperature and high-pressure large-diameter butterfly valves, employing the test system described above, includes the following steps: First, install the system. According to the specifications of the test valve, connect the corresponding diameter interfaces of the first and second containers to the test valve. Seal the other interfaces with blind flanges. Connect the inflation pipe interface of the first container to the compressed air source. Connect the branch exhaust pipe of the second container to the bubble detection device and the flow sensor respectively. The container is heated by an electric heating unit, and the pressure regulating valve is adjusted by external compressed air to simulate the high temperature and high pressure environment of the ship's SCR and EGR systems. The pressure and temperature sensors on the container detect environmental parameters in real time, and the leakage of the test valve is detected by a flow sensor and a bubble detection device. When testing valves of different specifications, rotate the container and connect the different diameter ports of the container to the test valves to perform tests on the valves of different specifications.

[0015] The beneficial effects of the present invention are as follows: 1. The container of this invention integrates pipe interfaces of different diameters, making it suitable for testing various specifications of butterfly valves and thus having a wide range of applications. By connecting external compressed air and adjusting the pressure regulating valve, it simulates the high-pressure environment of a ship's SCR and EGR systems, with pressure sensors installed on the container for pressure detection. An electric heating unit heats the compressed air inside the container to simulate the high-temperature environment of a ship's SCR and EGR systems, with temperature sensors installed on the container for temperature detection. In the exhaust pipe, a flow sensor and a bubble measuring device can be used to detect butterfly valve leakage.

[0016] 2. The container of the present invention is equipped with casters at the bottom, which facilitates the alignment of two interfaces with the same diameter. When it is necessary to connect the butterfly valve to the interfaces of the two containers, simply rotate the container to easily perform test valve tests with different interface specifications, which is convenient to operate. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the structure of the marine high-temperature and high-pressure large-diameter butterfly valve test device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the marine high-temperature and high-pressure large-diameter butterfly valve test system in an embodiment of the present invention.

[0019] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0020] The components are: 1. First container, 2. Second container, 3. DN900 blind flange, 4. DN500 blind flange, 5. DN80 blind flange, 6. DN250 blind flange, 7. Compressed air interface flange, 8. Electric heating interface, 9. Pressure regulating valve, 10. Ball valve, 11. Temperature sensor, 12. Pressure sensor, 13. Flow sensor, 14. Bubble detection device, 15. Casters, 16. Test valve. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Example 1 In a typical embodiment of the present invention, reference is made to Figures 1-2As shown, a marine high temperature and high pressure large-diameter butterfly valve testing device includes a container, which includes a first container 1 and a second container 2. Both containers are provided with multiple interfaces of different diameters. The two containers are sealed to the test valve 16 (butterfly valve) through the same diameter interface to realize multi-diameter testing. The two containers are equipped with temperature and pressure detection devices. The containers are equipped with an electric heating unit to provide a high-temperature environment. The first container is connected to an external inflation unit to provide a high-pressure environment. The second container is equipped with an exhaust unit, which is equipped with a flow sensor 13 and a bubble measuring device 14 to realize the leakage detection of the test valve 16.

[0023] like Figure 1 As shown, the first container 1 and the second container 2 have the same structure. Both containers have multiple interfaces welded on them. The interfaces have different diameters and are connected to the inside of the containers.

[0024] Each port diameter corresponds to a different specification of test valve. Specifically, in this embodiment, the container is set as a hollow cylinder. During the test, the container is set vertically, with flanges sealing both ends of the opening, and multiple ports are welded to the peripheral wall of the container.

[0025] like Figure 1 As shown, each container in this embodiment has four ports welded on it. All four ports are short pipes welded to the container. The four ports have different diameters, namely DN80, DN250, DN500 and DN900, which are compatible with the specifications of commonly used test valves (butterfly valves).

[0026] During the test, test valve 16 is connected between the interfaces of the same diameter in the first and second containers, such as... Figure 1 As shown, Figure 1 In the diagram, the test valve 16 is connected to DN500 ports on both its front and rear sides. This indicates that the test valve is a specification compatible with DN500 ports.

[0027] During testing, when the other three interfaces are not in use, they need to be sealed. This can be done using blind flanges to seal the unused interfaces, such as... Figure 1 As shown, four ports can be sealed using DN900 blind flange 3, DN80 blind flange 5, DN250 blind flange 6, and DN500 blind flange 4. When testing is required, simply remove the blind flange of the corresponding size according to the butterfly valve model. Figure 1 The text indicates that the butterfly valve to be tested is compatible with the DN500 diameter. Therefore, the DN500 blind flange 4 can be detached and connected to the butterfly valve for testing.

[0028] It is understandable that the ports of the same diameter on the two containers are at the same height so that when testing the butterfly valve, the butterfly valve can be connected to the ports of the same diameter on both containers at the same time.

[0029] like Figure 1 As shown, multiple casters 15 are connected to the bottom surfaces of the bottom flanges of the first and second containers. The casters 15 are equipped with self-locking devices. When it is necessary to change the interface diameter, the containers can be rotated to make the corresponding interfaces on the two containers coaxial.

[0030] Therefore, the universal wheels 15 are installed at the bottom of the container to facilitate the alignment of two interfaces with the same diameter. By simply rotating the container, test valves with different interface specifications can be easily tested.

[0031] The container in this embodiment integrates pipe interfaces of different diameters, which can be used to test butterfly valves of various specifications and has a wide range of applications.

[0032] like Figure 1 As shown, preferably, all four interfaces are at the same height on the periphery of the container, arranged circumferentially along the periphery of the container, and their diameters increase or decrease sequentially along a circumferential direction.

[0033] In a preferred example, the number of interfaces can be increased as needed, allowing more interfaces to be soldered onto a single container.

[0034] In a preferred example, multiple interfaces are not at the same height on the container. Preferably, the larger diameter interfaces are located near the bottom of the container, and the smaller diameter interfaces are located near the top of the container; alternatively, the largest diameter interface is located near the bottom of the container, while other diameter interfaces can be arranged at a mid-height position around the container. The purpose of this arrangement is that, since the larger diameter interfaces have a slightly larger mass, placing them near the bottom of the container lowers the overall center of gravity of the container, thus improving stability during testing.

[0035] In a preferred example, the lengths of the interfaces for different diameters are different. When actually manufacturing the container, the interface length should be determined based on the principle that other interfaces do not affect the participation of the current interface in the experiment. For example, if the largest diameter interface and the smallest diameter interface are close together, such as... Figure 1 If so, it is necessary to increase the length of the small-diameter interface to prevent the largest-diameter interface from interfering with the connection between the smallest-diameter interface and the butterfly valve.

[0036] In a preferred embodiment, interfaces of different diameters are arranged in an alternating manner. The multiple interfaces to be welded are divided into two groups based on their diameter: large-diameter interfaces and small-diameter interfaces. These large-diameter and small-diameter interfaces are arranged alternately, with both groups at the same height, but at different heights. The length of the large-diameter interface is shorter than the length of the small-diameter interface. This arrangement is intended to ensure a reasonable layout of the multiple interfaces, as the area occupied by the interface at the connection point to the container is larger than the cross-sectional area at the other end.

[0037] like Figure 1As shown, the detection devices on the first container 1 and the second container 2 are a temperature sensor 11 and a pressure sensor 12. The temperature sensor 11 and the pressure sensor 12 are arranged side by side at the flange at the top of the container, which can detect the temperature and pressure of the internal environment of the container in real time. They are used to monitor the temperature and pressure changes inside the two containers during the butterfly valve test to ensure that the temperature and pressure parameters meet the requirements.

[0038] like Figure 1 and Figure 2 As shown, the inflation unit includes an inflation pipeline interface. One end of the inflation pipeline interface is connected to the first container 1, and the other end is used to connect to a compressed air source through a compressed air interface flange 7. Compressed air can enter the container through the inflation pipeline interface. The inflation pipeline interface is equipped with a pressure regulating valve 9 and a ball valve 10, which are used to control the pressure.

[0039] like Figure 1 and Figure 2 As shown, the exhaust unit includes an exhaust pipeline, which includes a main exhaust pipeline, one end of which is connected to the second container, and the other end is connected to two sets of branch exhaust pipelines. The two sets of branch exhaust pipelines are connected in parallel, and each set of branch exhaust pipelines is equipped with a ball valve 10. The first set of branch exhaust pipelines is equipped with a flow sensor 13, and the second set of branch exhaust pipelines is equipped with a bubble detection device 14. The flow sensor 13 and the bubble detection device 14 can be used to detect the leakage of the butterfly valve. Specifically, the test valve 16 (butterfly valve) is closed, the ball valve 10 of the second set of exhaust pipelines is opened, and it is confirmed that there is no change in the flow sensor 13 and the bubble detection device 14. Compressed air at a set pressure is introduced into the first container 1 through a compressed air source, and the first container 1 is pressurized. If there is a leak in the test valve 16 (butterfly valve), the flow sensor 13 will show a reading, and the bubble detection device 14 will generate bubbles.

[0040] like Figure 1 and Figure 2 As shown, the open and closed states are verified. Test valve 16 (butterfly valve) is fixed on the first container 1, and butterfly valve 16 is opened. When fully open, the opening angle of butterfly valve 16 is confirmed using an angle measuring instrument. When verifying the closed state, the process is similar to the airtightness test, which tests whether it can be completely closed or leaking.

[0041] like Figure 1 and Figure 2 As shown, the test valve 16 (butterfly valve) is pneumatically started. Using a torque wrench, the test valve 16 (butterfly valve) is opened and closed in cold and hot pressure-holding states, and the required torque for opening and closing is measured.

[0042] like Figure 1 and Figure 2As shown, the electric heating unit includes a heating wire that is wrapped around the inside of the container. The electric heating interface 8 is located outside the container and is connected to the heating wire. Power is supplied to the heating wire through the electric heating interface to heat the internal environment of the container. With the help of a temperature sensor, the temperature parameters can be controlled.

[0043] This embodiment also includes a control unit (PLC). The PLC is connected to components with detection and control functions, such as temperature sensors, pressure sensors, flow sensors, bubble detection devices, and electric heating units. The control unit works with a display screen (not shown in the diagram). The display screen can show environmental parameters to facilitate guidance for staff to intervene in experiments.

[0044] This embodiment uses external compressed air to adjust the pressure regulating valve 9, simulating the high-pressure environment of a ship's SCR and EGR systems. A pressure sensor installed on the container monitors the pressure. An electric heating unit heats the compressed air inside the container, simulating the high-temperature environment of a ship's SCR and EGR systems. A temperature sensor installed on the container monitors the temperature. In the exhaust pipeline, a flow sensor and a bubble measuring device can be used to detect leaks in the butterfly valve.

[0045] Example 2 This embodiment provides a test system for marine high-temperature and high-pressure large-diameter butterfly valves, such as... Figure 2 As shown, it includes the test apparatus of Embodiment 1, and also includes a compressed air source. The compressed air source is connected to the air filling pipeline interface. By connecting external compressed air and adjusting the pressure regulating valve, the high-pressure environment of the ship's SCR and EGR systems can be simulated. With the help of a pressure sensor, the high-pressure environment inside the container can be controlled.

[0046] Example 3 This embodiment provides a test method for marine high-temperature and high-pressure large-diameter butterfly valves, which uses the test system described in the embodiment and includes the following steps: First, install the system. Based on the test valve's diameter specifications, determine the diameter of the interface to be connected to the container. With the help of the universal wheel, the container can be rotated quickly to align the corresponding interfaces of the same diameter on the two containers. Then, connect the butterfly valve to the two interfaces.

[0047] Other interfaces are sealed with blind flanges. The inflation pipe interface of the first container is connected to a compressed air source, and the branch exhaust pipes of the second container are connected to the bubble detection device and the flow sensor respectively. The container is heated by an electric heating unit, and the pressure regulating valve is adjusted by external compressed air to simulate the high temperature and high pressure environment of the ship's SCR and EGR systems. The pressure and temperature sensors on the container detect environmental parameters in real time, and the leakage of the test valve is detected by a flow sensor and a bubble detection device. When testing valves of different specifications, remove the current butterfly valve, seal the corresponding interface with a blind flange, then rotate the container to remove the blind flange on the interface to be tested, and connect it to the corresponding test valve to achieve testing of valves of different specifications.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A test device for marine high-temperature and high-pressure large-diameter butterfly valves, characterized in that, It includes a first container and a second container, both of which are equipped with multiple ports of different diameters. The two containers are sealed to the test valve through the same port of the same diameter to realize multi-diameter testing. The two containers are equipped with temperature and pressure detection devices. The containers are equipped with an electric heating unit to provide a high-temperature environment. The first container is connected to an external inflation unit to provide a high-pressure environment. The second container is equipped with an exhaust unit, which is equipped with a flow sensor and a bubble measuring device to realize the test valve leakage detection.

2. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 1, characterized in that, The first and second containers are fixed with multiple ports of different diameters, each port corresponding to a different specification of test valve; It also includes corresponding blind flanges, used to seal interfaces that are not in use.

3. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 1, characterized in that, The bottom of the first and second containers is equipped with casters, which are equipped with self-locking devices; The ports of the same diameter on both containers are at the same height.

4. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 1, characterized in that, The detection devices on the first and second containers are temperature sensors and pressure sensors.

5. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 1, characterized in that, The inflation unit includes an inflation pipeline interface, one end of which is connected to the first container, and the other end is used to connect to a compressed air source. The inflation pipeline interface is equipped with a pressure regulating valve and a ball valve.

6. A marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 1 or 5, characterized in that, The exhaust unit includes an exhaust pipe, one end of which is connected to the second container, and the other end is connected to two sets of branch exhaust pipes, each set of branch exhaust pipes being equipped with a ball valve.

7. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 6, characterized in that, One set of branch exhaust pipes is equipped with a flow sensor, and the other set of branch exhaust pipes is equipped with a bubble detection device.

8. The marine high-temperature and high-pressure large-diameter butterfly valve testing device according to claim 7, characterized in that, It also includes a control unit, which is connected to the detection element and the electric heating unit.

9. A test system for marine high-temperature and high-pressure large-diameter butterfly valves, characterized in that, The test apparatus as described in any one of claims 1-8 further includes a compressed air source, which is connected to an air filling pipeline interface.

10. A test method for a marine high-temperature and high-pressure large-diameter butterfly valve, characterized in that, The testing system as described in claim 9 includes the following steps: First, install the system. According to the specifications of the test valve, connect the corresponding diameter interfaces of the first and second containers to the test valve. Seal the other interfaces with blind flanges. Connect the inflation pipe interface of the first container to the compressed air source. Connect the branch exhaust pipe of the second container to the bubble detection device and the flow sensor respectively. The container is heated by an electric heating unit, and the pressure regulating valve is adjusted by external compressed air to simulate the high temperature and high pressure environment of the ship's SCR and EGR systems. The pressure and temperature sensors on the container detect environmental parameters in real time, and the leakage of the test valve is detected by a flow sensor and a bubble detection device. When testing valves of different specifications, rotate the container and connect the different diameter ports of the container to the test valves to perform tests on valves of different specifications.

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