Valve plate fatigue test device

Abstract

The utility model discloses a valve plate fatigue test device which comprises an opening and closing assembly and a driving assembly, the opening and closing assembly is arranged on the peripheral side of the driving assembly, a valve plate is installed on the driving assembly, and the driving assembly moves to drive the valve plate connected with the driving assembly to move and get close to the opening and closing assembly. The opening and closing assembly drives the valve plate to be opened or closed repeatedly to achieve simulation of actual working conditions. The opening and closing assembly is arranged to exert pressure on different faces of the same valve plate to open or close the valve plate, the valve plate is installed on the driving assembly, the driving assembly moves to drive the valve plate to move to be matched with the opening and closing assembly to achieve repeated opening and closing, and the opening and closing working conditions of the valve plate are truly simulated. The accuracy of fatigue performance test and safety life evaluation results under the valve plate application working condition is improved, and powerful support is provided for performance and safety test experiments of various flow control valves.

Description

Technical Field

[0001] The utility model relates to the technical field of valve plate fatigue testing, in particular to a valve plate fatigue testing device. Background Art

[0002] The valve disc is a core component of a flow control valve, which is widely used in the field of industrial fluid control. Fatigue performance testing and safety life evaluation of valve discs are crucial for various types of fluid control valves. However, existing fatigue testing devices cannot accurately simulate the stress conditions of the valve disc, thus failing to achieve good test results. This makes it difficult to accurately perform fatigue performance testing and safety life evaluation of valve discs under open and closed conditions. Utility Model Content

[0003] In view of the shortcomings of the existing technology, a valve plate fatigue test device is proposed, which solves the problem that the fatigue test devices in the above background technology cannot accurately simulate the stress conditions of the valve plate.

[0004] To achieve the above objectives, the present invention proposes the following technologies:

[0005] A valve plate fatigue testing device includes an opening and closing component and a driving component. The opening and closing component is arranged on the peripheral side of the driving component. The valve plate is installed on the driving component. The driving component moves to drive the valve plate connected to it to move and approach the opening and closing component. The opening and closing component drives the valve plate to repeatedly open or close to simulate actual working conditions.

[0006] Furthermore, the opening and closing assembly includes an opening mechanism and a closing mechanism, and the opening mechanism and the closing mechanism are respectively arranged on both sides of the driving assembly to apply pressure to the valve plate from different directions to achieve opening or closing.

[0007] Furthermore, the driving assembly includes a shell, the surface of the shell is arc-shaped, and the valve plate is rotatably mounted on the surface of a protruding side of the shell to smoothly achieve opening or closing.

[0008] Furthermore, the shell is cylindrical and is transmission-connected to a driving assembly, which drives the shell to rotate around the axis of the cylinder to drive the valve plate to repeatedly approach the opening and closing assembly.

[0009] Furthermore, the opening mechanism and the closing mechanism are respectively located on the inner and outer sides of the shell, a plurality of valve plates are provided along the circumferential direction of the shell, and the shell is provided with openings that cooperate with the valve plates.

[0010] Furthermore, the opening mechanism includes a first air cavity, and the closing mechanism includes a second air cavity. The first air cavity and the second air cavity release the high-pressure gas stored therein to drive the valve plate to open or close.

[0011] Furthermore, the opening mechanism further comprises a nozzle arranged on the first air cavity, the nozzle is provided with a flow regulating valve, and the nozzle is arranged along the radial direction of the shell so that the air outlet direction is perpendicular to the valve plate.

[0012] Furthermore, the driving assembly includes a servo motor, and the servo motor drives the housing to rotate at different speeds to adjust the loading frequency of the valve plate.

[0013] Compared with the prior art, the comprehensive effects brought by the utility model include:

[0014] By setting up an opening and closing component to apply pressure on different surfaces of the same valve disc, the valve disc can be opened or closed. The valve disc is installed on a driving component. The movement of the driving component drives the valve disc to move and cooperates with the opening and closing component to achieve repeated opening and closing. This truly simulates the opening and closing conditions of the valve disc, improves the accuracy of fatigue performance testing and safety life evaluation results under valve disc application conditions, and provides strong support for performance and safety testing of various flow control valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0016] Legend: 1. Valve plate; 2. Shell; 3. First air cavity; 4. Second air cavity; 5. Nozzle. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present invention.

[0018] In this document, the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", and "top" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0019] like Figure 1 As shown, a valve plate fatigue test device includes an opening and closing component and a driving component. The opening and closing component is arranged on the peripheral side of the driving component. The valve plate 1 is installed on the driving component. The driving component moves to drive the valve plate 1 connected to it to move and approach the opening and closing component. The opening and closing component drives the valve plate 1 to repeatedly open or close to simulate the actual working conditions.

[0020] By setting an opening and closing component to apply pressure to different surfaces of the same valve disc 1, the valve disc 1 can be opened or closed. The valve disc 1 is installed on the driving component. The movement of the driving component drives the valve disc 1 to move and cooperates with the opening and closing component to realize repeated opening and closing. The opening and closing conditions of the valve disc are truly simulated, and the accuracy of the fatigue performance test and safety life evaluation results of the valve disc 1 under the application conditions is improved, providing strong support for the performance and safety testing of various flow control valves.

[0021] In the valve plate fatigue test device of this embodiment, the opening and closing assembly includes an opening mechanism and a closing mechanism, which are respectively arranged on both sides of the driving assembly to apply pressure to the valve plate 1 from different directions to achieve opening or closing.

[0022] Specifically, an opening mechanism and a closing mechanism are set to work separately to control the opening or closing of the valve plate 1, and the valve plate 1 is impacted from different directions to make it move, which is more in line with the movement process of the valve plate 1 under actual use conditions, thereby improving the accuracy of the fatigue test results of the valve plate 1.

[0023] In the valve plate fatigue test device of this embodiment, the driving assembly includes a housing 2, the surface of the housing 2 is arc-shaped, and the valve plate 1 is rotatably mounted on the surface of the protruding side of the housing 2 to smoothly open or close.

[0024] It is set to an arc-shaped structure, so that the shell 2 can further drive the valve plate 1 to move back and forth between the opening mechanism and the closing mechanism through rotation to realize repeated opening and closing of the valve plate 1, simulating the actual working conditions. The valve plate 1 is set on the protruding side of the arc surface to avoid interference with the shell 2 when the valve plate 1 is closed, which affects the accuracy of the test results.

[0025] In the valve plate fatigue test device of this embodiment, the shell 2 is cylindrical and is connected to a driving assembly. The driving assembly drives the shell 2 to rotate around the axis of the cylinder to drive the valve plate 1 to repeatedly approach the opening and closing assembly.

[0026] Specifically, the cylindrical housing 2 facilitates driving the valve plate 1 to repeatedly pass through the same position to achieve opening or closing, and the opening and closing frequency of the valve plate 1 can be controlled by adjusting the rotation speed, which is simple to control.

[0027] Specifically, the drive assembly includes a servo motor, which drives housing 2 to rotate at different speeds to adjust the loading frequency of valve disc 1. By controlling the servo motor's speed, the time interval between repeated opening and closing of valve disc 1 is controlled, meeting the loading requirements of different test frequencies, increasing the practicality of the test device and improving the accuracy of test results.

[0028] Preferably, the servo motor sets different control parameters through the test control software to meet the test requirements of different test frequencies. The control method thereof refers to the existing technology and will not be described in detail here.

[0029] In the valve plate fatigue test device of this embodiment, the opening mechanism and the closing mechanism are respectively located on the inner and outer sides of the shell 2. Several valve plates 1 are arranged along the circumferential direction of the shell 2. The shell 2 is provided with an opening that cooperates with the valve plates 1.

[0030] Through the above arrangement, the opening mechanism drives the valve disc 1 to open on the shell 2 from the inside of the shell 2, and then the shell 2 rotates to drive the valve disc 1 through the closing mechanism on the outside. The closing mechanism applies pressure to the valve disc 1 to close the valve disc 1. By arranging multiple valve discs 1, multiple valve discs 1 can be subjected to opening and closing fatigue tests at the same time, thereby improving the test efficiency; the opening hole is arranged to facilitate the opening mechanism inside the shell 2 to apply pressure to the valve disc 1 to make it open smoothly.

[0031] Preferably, the shell 2 can have 4 or more openings within a 360° range of the same circumference, with an aperture of 2-3 mm. The aperture size can be determined according to different working conditions and different valve plate 1 sizes. The valve plate 1 is installed on the outside of the opening. In this embodiment, four valve plates 1 are installed at equal distances along the circumference.

[0032] In the valve plate fatigue test device of this embodiment, the opening mechanism includes a first air cavity 3, and the closing mechanism includes a second air cavity 4. The first air cavity 3 and the second air cavity 4 release the high-pressure gas stored therein to drive the valve plate 1 to open or close.

[0033] Specifically, pressure is applied to the valve plate 1 to open or close it through an air cavity storing high-pressure gas, and the opening and closing of the valve plate 1 is controlled by air pressure. The structure is simple, and it is convenient to test different pressures of the valve plate 1 by controlling the air pressure and flow, which further fits the actual working conditions of the valve plate 1, thereby making the test results more accurate.

[0034] In the valve plate fatigue test device of this embodiment, the opening mechanism also includes a nozzle 5 arranged on the first air cavity 3, and a flow regulating valve is provided on the nozzle 5. The nozzle 5 is arranged along the radial direction of the shell 2 so that the air outlet direction is perpendicular to the valve plate 1.

[0035] Through the above structure, the outlet direction of the high-pressure gas is consistent with the force direction of the valve plate 1 under actual working conditions, so that the ejected airflow is aligned with the valve plate 1 to exert pressure. The flow regulating valve is provided to facilitate the adjustment of the airflow pressure or flow ejected by the nozzle 5 to achieve different loading pressures.

[0036] Specifically, the nozzles 5 are arranged corresponding to the openings so that the gas applies pressure to the valve plate 1 through the openings. The nozzles 5 are all arranged horizontally to the right so that the valve plate 1 can be opened or closed after rotating 180 degrees, so that the spacing is uniform. In addition, the direction of the nozzles 5 can be adjusted according to different test requirements.

[0037] Preferably, the first air cavity 3 and the second air cavity 4 have the same structure, and the air cavity body is equipped with a pressure gauge, a safety valve, and an inlet and outlet valves, and the inside carries a certain pressure of inert gas or air (according to test requirements).

[0038] In this application, since the first air cavity 3 and the second air cavity 4 are installed relative to the valve plate 1 and the spatial position between them and the rotating mechanism housing 2 is reasonable, gas pressure can be applied to different surfaces of the same valve plate 1 to truly simulate the opening and closing conditions of the valve plate 1.

[0039] Working Principle: Complete all pre-test preparations and install valve disc 1 as required. At the start of the test, open the gas nozzles 5 in the first and second air chambers 3 and 4, adjust the flow and pressure to meet the test parameters, and then drive the housing 2 to rotate. The speed is set and adjusted according to the test frequency of valve disc 1's opening and closing. Ensure that the pressure frequency on both sides of valve disc 1 matches the actual operating opening and closing frequency of valve disc 1. Based on the test cycle (number of times) required for valve disc 1, the control software records the test data and stops the test in real time. The test results are recorded and a test report is issued.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "rotation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] Although the embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve plate fatigue test device, characterized in that: It includes an opening and closing component and a driving component. The opening and closing component is arranged on the peripheral side of the driving component. The valve plate is installed on the driving component. The driving component moves to drive the valve plate connected to it to move and approach the opening and closing component. The opening and closing component drives the valve plate to repeatedly open or close to realize the simulation of actual working conditions.

2. The valve plate fatigue testing device according to claim 1, characterized in that: The opening and closing assembly includes an opening mechanism and a closing mechanism, which are respectively arranged on both sides of the driving assembly to apply pressure to the valve plate from different directions to achieve opening or closing.

3. The valve plate fatigue testing device according to claim 2, characterized in that: The driving assembly includes a shell, the surface of the shell is arc-shaped, and the valve plate is rotatably mounted on the surface of a protruding side of the shell to smoothly realize opening or closing.

4. The valve plate fatigue testing device according to claim 3, characterized in that: The shell is cylindrical and is transmission-connected to a driving assembly. The driving assembly drives the shell to rotate around the axis of the cylinder to drive the valve plate to repeatedly approach the opening and closing assembly.

5. The valve plate fatigue testing device according to claim 4, characterized in that: The opening mechanism and the closing mechanism are respectively located on the inner and outer sides of the shell. Several valve plates are arranged along the circumferential direction of the shell. The shell is provided with openings that match the valve plates.

6. The valve plate fatigue testing device according to claim 4, characterized in that: The opening mechanism includes a first air cavity, and the closing mechanism includes a second air cavity. The first air cavity and the second air cavity release the high-pressure gas stored therein to drive the valve plate to open or close.

7. The valve plate fatigue testing device according to claim 6, characterized in that: The opening mechanism further comprises a nozzle arranged on the first air cavity, a flow regulating valve is arranged on the nozzle, and the nozzle is arranged along the radial direction of the shell so that the air outlet direction is perpendicular to the valve plate.

8. The valve plate fatigue testing device according to claim 4, characterized in that: The driving assembly includes a servo motor, and the servo motor drives the housing to rotate at different speeds to adjust the loading frequency of the valve plate.

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