Large-diameter butterfly valve testing device

Abstract

The utility model relates to a large-aperture butterfly valve testing device, which comprises a base and a gantry seat arranged above the base, the upper side of the base is provided with a detection table capable of moving back and forth, the detection table is provided with a supporting seat for placing a butterfly valve, a compression hydraulic cylinder positioned right above the supporting seat is arranged above the gantry seat, and the compression hydraulic cylinder is provided with a hydraulic cylinder. A telescopic rod of the pressing hydraulic cylinder downwards penetrates through the top of the gantry base and is fixedly connected with a pressing base used for pressing the upper end of the butterfly valve. And a high-pressure medium inlet hole penetrating to the bottom of the detection table is formed in the central position of the supporting seat. The large-diameter butterfly valve testing device is reasonable in structural design, stable, reliable, high in strength, large in bearing capacity and stable in applied pressure, ensures that the two ends of the butterfly valve are completely blocked, avoids leakage, and improves the accuracy of a detection result; and the detection platform capable of moving back and forth is utilized, so that the butterfly valve is convenient to hoist, pick and place, the detection efficiency can be improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve testing technology, and in particular to a testing device for large-diameter butterfly valves. Background Technology

[0002] After the butterfly valve is assembled, a sealing test is required. For large-diameter butterfly valves, due to their large size and heavy weight, ordinary testing equipment cannot meet their usage requirements. On the one hand, the equipment is not strong enough, the load-bearing capacity is insufficient, the applied pressure is unstable, and leakage is likely to occur at both ends of the butterfly valve. On the other hand, butterfly valves are inconvenient to pick up and put down, requiring manual handling, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a large-diameter butterfly valve testing device that is stable and reliable, applies stable pressure, improves the accuracy of test results, facilitates butterfly valve hoisting and handling, and can improve testing efficiency.

[0004] This utility model is implemented using the following scheme: a large-diameter butterfly valve testing device, including a base and a gantry seat above the base. The upper side of the base is provided with a test platform that can move back and forth. The test platform is provided with a support seat for placing the butterfly valve. Above the gantry seat is a clamping hydraulic cylinder located directly above the support seat. The telescopic rod of the clamping hydraulic cylinder passes downward through the top of the gantry seat and is fixedly connected to a pressure seat for clamping the upper end of the butterfly valve. A high-pressure medium inlet hole is opened at the center of the support seat, extending to the bottom of the test platform.

[0005] Furthermore, the lower orifice of the high-pressure medium inlet is connected to a high-pressure water pipe and a high-pressure air pipe via a T-junction, and both the high-pressure water pipe and the high-pressure air pipe are equipped with pressure sensors and valves.

[0006] Furthermore, a support frame is provided on the front side of the base, the upper surface of the support frame is flush with the surface of the base, a pair of guide rails are connected to the support frame and the base, and a slide block that slides with the guide rails is connected to the bottom of the detection table.

[0007] Furthermore, limit blocks are provided at the front and rear ends of the guide rail.

[0008] Furthermore, the base is provided with a movable hydraulic cylinder for driving the test platform to move back and forth. One end of the movable hydraulic cylinder is hinged to the base, and the other end is hinged to the bottom of the test platform.

[0009] Furthermore, a channel running along the front-to-back direction is provided at the middle position on the upper side of the base, and the movable hydraulic cylinder is located in the channel.

[0010] Furthermore, the support base and the clamping hydraulic cylinder are provided in two corresponding sets.

[0011] Compared with the prior art, the present invention has the following advantages: The large-diameter butterfly valve testing device of the present invention has a reasonable structural design, is stable and reliable, has high strength and large load-bearing capacity, and applies stable pressure, ensuring that both ends of the butterfly valve are completely sealed to avoid leakage and improve the accuracy of test results; it is convenient and practical, and the test platform that can move back and forth facilitates the hoisting and placement of the butterfly valve, which can improve the testing efficiency and reduce labor intensity.

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0013] Figure 1 This is a front view of an embodiment of the present utility model;

[0014] Figure 2 This is a side sectional view of an embodiment of the present invention;

[0015] Figure 3 This is a cross-sectional view of the support base according to an embodiment of the present utility model;

[0016] The following are the labels in the diagram: 100-base, 110-guide rail, 120-channel, 200-gantry seat, 300-testing table, 310-support seat, 320-high pressure medium inlet, 330-slide seat, 400-clamping hydraulic cylinder, 410-pressure seat, 500-high pressure water pipe, 600-high pressure air pipe, 700-support frame, 800-limit stop, 900-moving hydraulic cylinder, 1000-butterfly valve. Detailed Implementation

[0017] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] like Figures 1-3As shown, a large-diameter butterfly valve testing device includes a base 100 and a gantry seat 200 located above the base. A movable testing platform 300 is provided on the upper side of the base. A support seat 310 for placing the butterfly valve is provided on the testing platform. A clamping hydraulic cylinder 400 is located directly above the support seat above the gantry seat. The telescopic rod of the clamping hydraulic cylinder passes downward through the top of the gantry seat and is fixedly connected to a pressure seat 410 for clamping the upper end of the butterfly valve. A high-pressure medium inlet 320 extending to the bottom of the testing platform is provided at the center of the support seat. Because large-diameter butterfly valves are large and heavy, the movable testing platform facilitates the lifting and placement of the butterfly valve. Simultaneously, the device features a reasonable structural design, high strength, large load-bearing capacity, and stable pressure application, ensuring complete sealing of both ends of the butterfly valve to prevent leakage and improve the accuracy of the test results. When the testing platform moves forward, it serves as a placement position for lifting and placing the butterfly valve; when it moves backward, it serves as a testing position for testing. During testing, the hydraulic cylinder 400 is extended, and the pressure seat presses against the upper end of the butterfly valve, which cooperates with the support seat to seal the upper and lower sections of the butterfly valve. Then, high-pressure water or high-pressure gas is introduced through the high-pressure medium inlet 320 to test the airtightness.

[0020] In this embodiment, the lower orifice of the high-pressure medium inlet is connected to a high-pressure water pipe 500 and a high-pressure gas pipe 600 via a T-junction. Both the high-pressure water pipe and the high-pressure gas pipe are equipped with pressure sensors and valves. One of the two media, high-pressure water and high-pressure gas, is selected for testing. By detecting the pressure through the pressure sensor, it can be determined whether the sealing performance is qualified.

[0021] In this embodiment, in order to ensure that the testing platform can be effectively supported when it moves forward, a support frame 700 is provided on the front side of the base. The upper surface of the support frame is flush with the surface of the base. A pair of guide rails 110 are connected to the support frame and the base. A slide block 330 that slides with the guide rails is connected to the bottom of the testing platform 300. The guide rails extend from the base to the support frame.

[0022] In this embodiment, to improve safety, limit blocks 800 are provided at the front and rear ends of the guide rail to prevent the testing platform from falling due to exceeding the safe travel distance.

[0023] In this embodiment, the base is provided with a movable hydraulic cylinder 900 for driving the test platform to move back and forth. One end of the movable hydraulic cylinder is hinged to the base and the other end is hinged to the bottom of the test platform.

[0024] In this embodiment, in order to reduce the height of the testing platform, a channel 120 with a front-to-back orientation is provided at the middle position of the upper side of the base, and the movable hydraulic cylinder is located in the channel.

[0025] In this embodiment, the support base and the clamping hydraulic cylinder are provided in two corresponding sets, which can simultaneously complete the detection of two butterfly valves and improve the detection efficiency.

[0026] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0027] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0028] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0029] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A testing device for large-diameter butterfly valves, characterized in that: The device includes a base and a gantry seat located above the base. The upper side of the base is provided with a test platform that can move back and forth. The test platform is provided with a support seat for placing a butterfly valve. Above the gantry seat is a clamping hydraulic cylinder located directly above the support seat. The telescopic rod of the clamping hydraulic cylinder passes downward through the top of the gantry seat and is fixedly connected to a pressure seat for clamping the upper end of the butterfly valve. A high-pressure medium inlet hole is opened at the center of the support seat, extending to the bottom of the test platform.

2. The large-diameter butterfly valve testing device according to claim 1, characterized in that: The high-pressure medium inlet is connected to a high-pressure water pipe and a high-pressure air pipe via a T-junction. Both the high-pressure water pipe and the high-pressure air pipe are equipped with pressure sensors and valves.

3. The large-diameter butterfly valve testing device according to claim 1, characterized in that: The base is provided with a support frame on its front side. The upper surface of the support frame is flush with the surface of the base. A pair of guide rails are connected to the support frame and the base. The bottom of the testing table is connected to a slide block that slides with the guide rails.

4. The large-diameter butterfly valve testing device according to claim 3, characterized in that: Limiting blocks are located at the front and rear ends of the guide rail.

5. The testing device for large-diameter butterfly valves according to claim 1, characterized in that: The base is equipped with a movable hydraulic cylinder for driving the test platform to move back and forth. One end of the movable hydraulic cylinder is hinged to the base, and the other end is hinged to the bottom of the test platform.

6. The large-diameter butterfly valve testing device according to claim 5, characterized in that: A channel running in a front-to-back direction is provided at the middle position of the upper side of the base, and the movable hydraulic cylinder is located in the channel.

7. The large-diameter butterfly valve testing device according to claim 1, characterized in that: The support base and the clamping hydraulic cylinder are provided in two corresponding sets.

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