A test equipment for the performance of metal castings
By using a double-sealed annular gasket structure and a cylinder system, the problem of loose sealing at the end of U-shaped metal tube castings was solved, enabling efficient and low-cost airtightness testing and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG YEQIAN COMPLETE MACHINERY CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, the end sealing structure of U-shaped metal tube castings is simple, which can easily lead to poor sealing and affect the test results. At the same time, the complex sealing structure is costly and not convenient for quick disassembly and assembly.
It adopts a double-sealing annular gasket structure, including an inner sealing ring and an outer sealing ring, and works with a cylinder and telescopic component to achieve double sealing of the U-shaped metal tube casting port. The design of the extrusion disc and inclined wall ensures sealing stability and ease of operation.
It achieves efficient sealing of the U-shaped metal tube casting port, ensuring the accuracy of airtightness testing. The equipment has a simple structure, is easy to operate, has low cost, and is easy to maintain.
Smart Images
Figure CN224286296U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of casting testing equipment, specifically a test equipment for testing the performance of metal castings. Background Technology
[0002] U-shaped metal pipe castings are a type of metal casting. Their bending structure can absorb the thermal expansion and contraction displacement (axial compensation up to ±10mm) or mechanical vibration energy of the piping system. They are widely used in various applications such as circulating pipelines in chemical reactors and return oil pipelines in hydraulic systems. After production, U-shaped metal pipe castings require performance testing, one aspect of which is testing their airtightness. Since some U-shaped metal pipe castings have integrally formed or welded flanges at both ends for easy connection with other pipelines, conventional sleeve-type or piston-type sealing structures offer limited sealing options at the ends, easily leading to incomplete sealing and affecting test results. Overly complex sealing structures that can wrap the flanges are inconvenient for quick disassembly and assembly of U-shaped metal pipe castings, and are also expensive and impractical. Therefore, those skilled in the art have proposed a metal casting performance testing device to address the problems mentioned above. Utility Model Content
[0003] The purpose of this invention is to provide a test device for the performance of metal castings to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A performance testing device for metal castings includes a frame plate, a placement seat mounted on the inner bottom surface of the frame plate, a placement groove provided on the top of the placement seat, a control box mounted on the side of the frame plate, a telescopic component mounted on the inner top surface of the frame plate, a movable frame connected to the bottom end of the telescopic component, two extrusion discs provided at the bottom of the movable frame, an annular groove provided at the bottom end of the extrusion discs, a double-sealing annular gasket provided in the annular groove, a cylinder mounted on the top of the frame plate, one end of the cylinder connected to one end of an air supply pipe, a digital pressure gauge and a connecting pipe mounted on one of the extrusion discs, one end of the digital pressure gauge connected to one end of a detection pipe, the other end of the air supply pipe connected to one end of the connecting pipe, and the other ends of the detection pipe and the connecting pipe both extending to the lower middle part of the extrusion disc.
[0006] As a further embodiment of this utility model: the inner bottom of the double sealing ring gasket is integrally formed with an inner sealing sleeve body, and the outer bottom of the double sealing ring gasket is integrally formed with an outer sealing sleeve body. The distance between the outer wall of the inner sealing sleeve body and the inner wall of the outer sealing sleeve body is consistent with the ring width of the flange.
[0007] As a further embodiment of this utility model: the inner wall of the annular groove is provided with an inner inclined wall, and the outer wall of the annular groove is provided with an outer inclined wall. The distance between the middle of the inner inclined wall and the middle of the outer inclined wall is consistent with the annular width of the flange.
[0008] As a further improvement of this utility model: a track rod is horizontally installed at the bottom of the movable frame, and two sliders are slidably connected on the track rod. A pressing plate is detachably installed at the bottom of the slider.
[0009] As a further embodiment of this utility model: a mounting sleeve is connected to the center of the top of the extrusion disc, and the top of the mounting rod is connected to the bottom of the slider, with the mounting sleeve threadedly connected to the bottom of the mounting rod.
[0010] This invention has the following advantages: The testing equipment uses a first telescopic component to cooperate with the movable frame to drive the extrusion plate to extrude a double-sealing annular gasket. The double-sealing annular gasket is equipped with an inner sealing ring and an outer sealing ring to seal the inner circumference of the U-shaped metal tube casting port and the outer circumference of the U-shaped metal tube casting port flange, respectively, thus achieving a double seal on the port of the U-shaped metal tube casting and ensuring sealing stability. This makes the accuracy of airtightness testing of the U-shaped metal tube casting higher through the cooperation of cylinders, air supply pipes, digital pressure gauges, etc. The overall equipment structure is simple and easy to operate. The U-shaped metal tube casting can be fixed by simply inserting the bottom into the placement groove. The end of the U-shaped metal tube casting can be quickly sealed by simply moving the movable frame down through the telescopic component. The testing steps are simple, the cost of each component is low, and it is easy to maintain, making it more practical. Attached Figure Description
[0011] Figure 1 This is a front view of the overall internal structure of an embodiment of the present utility model.
[0012] Figure 2 This is a schematic diagram showing the cooperation between the double-sealing annular gasket and the extrusion disc in an embodiment of this utility model.
[0013] Figure 3 This is a schematic diagram of the structure of the double-sealing annular gasket in an embodiment of this utility model.
[0014] In the diagram: 1. Frame plate; 101. Control box; 2. Cylinder; 3. Telescopic component; 4. Movable frame; 401. Track rod; 402. Slider; 403. Mounting rod; 5. Extrusion plate; 501. Circular groove; 502. Inner inclined wall; 503. Outer inclined wall; 504. Mounting sleeve; 6. Double sealing circular gasket; 601. Inner sealing ring body; 602. Outer sealing ring body; 7. U-shaped metal pipe casting; 701. Flange; 8. Digital pressure gauge; 801. Detection tube; 9. Connecting pipe; 10. Gas supply pipe; 11. Placement seat; 1101. Placement groove; 1102. Buffer pad. Detailed Implementation
[0015] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.
[0019] Example 1: Please refer to Figures 1 to 3A metal casting performance testing device includes a frame plate 1, which is U-shaped. A placement seat 11 is mounted on the inner bottom surface of the frame plate 1, and a placement groove 1101 is provided on the top of the placement seat 11. A control box 101 is mounted on the side of the frame plate 1. A telescopic component 3 is mounted on the inner top surface of the frame plate 1. A movable frame 4 is connected to the bottom end of the telescopic component 3. Two extrusion discs 5 are provided at the bottom of the movable frame 4. A circular groove 501 is provided at the bottom end of the extrusion discs 5, and a double-sealing circular groove 501 is provided within the circular groove 501. The ring gasket 6, the top of the frame plate 1 is equipped with a cylinder 2, one end of the cylinder 2 is connected to one end of the air supply pipe 10, one of the extrusion discs 5 is equipped with a digital pressure gauge 8 and a connecting pipe 9, one end of the digital pressure gauge 8 is connected to one end of the detection pipe 801, the other end of the air supply pipe 10 is connected to one end of the connecting pipe 9, the other end of the detection pipe 801 and the other end of the connecting pipe 9 both extend to the lower middle part of the extrusion disc 5, the connection between the connecting pipe 9 and the extrusion disc 5 and the connection between the detection pipe 801 and the extrusion disc 5 are sealed.
[0020] Please see Figures 1 to 3 The inner bottom of the double-sealing annular gasket 6 is integrally formed with an inner sealing ring body 601, and the outer bottom of the double-sealing annular gasket 6 is integrally formed with an outer sealing ring body 602. The distance between the outer wall of the inner sealing ring body 601 and the inner wall of the outer sealing ring body 602 is consistent with the annular width of the flange 701. The inner wall of the annular groove 501 is provided with an inner inclined wall 502, and the outer wall of the annular groove 501 is provided with an outer inclined wall 503. The distance between the middle of the inner inclined wall 502 and the middle of the outer inclined wall 503 is consistent with the annular width of the flange 701. The inner diameters of the inner inclined wall 502 and the outer inclined wall 503 are...
[0021] Example 2: See Figure 1 , Figure 2 Based on Embodiment 1, a track rod 401 is horizontally installed at the bottom of the movable frame 4. Two sliders 402 are slidably connected on the track rod 401. An extrusion plate 5 is detachably installed at the bottom of the slider 402. In this embodiment, an installation sleeve 504 is connected to the center of the top of the extrusion plate 5. The bottom of the slider 402 is connected to the top of the installation rod 403. The installation sleeve 504 is threadedly connected to the bottom of the installation rod 403.
[0022] For preferred options, please refer to [link / reference]. Figure 1The cylinder 2 is electric, and the telescopic component 3 is an existing electric telescopic rod. A control box 101 is installed on the side of the frame plate 1. The control box 101 is equipped with a controller that matches the cylinder 2 and the telescopic component 3. An operation panel is installed on the control box 101. The cylinder 2 and the telescopic component 3 are controlled and powered through the control box 101. The inner shape and size of the placement groove 1101 correspond to the lower outer dimensions of the U-shaped metal tube casting 7. A buffer pad 1102 is provided on the inner wall of the placement groove 1101 to protect the U-shaped metal tube casting 7.
[0023] Working principle: In use, the lower part of the U-shaped metal tube casting 7 is inserted into the placement groove 1101 for fixation. An extrusion disc 5 and a double-sealing annular gasket 6, matching the shape and size of the U-shaped metal tube casting 7's port, are selected. The double-sealing annular gasket 6 is installed at the end of the U-shaped metal tube casting 7, so that the outer wall of the inner sealing ring 601 fits against the inner wall of the U-shaped metal tube casting 7, and the inner wall of the outer sealing ring 602 fits against the outer wall of the flange 701. The position of the slider 402 on the track rod 401 is adjusted to align the extrusion disc 5 with the flange 701. The extension of the telescopic component 3 causes the extrusion disc 5 to move downwards, placing the upper part of the double-sealing annular gasket 6 within the annular groove 501. The inner sealing ring is then compressed by the inner inclined wall 502. The inner wall of the ring body 601 is squeezed by the outer wall of the outer inclined wall 503 to compress the outer wall of the outer sealing sleeve ring body 602, thereby squeezing and sealing the port of the U-shaped metal pipe casting 7 and the periphery of the flange 701, achieving a double seal for the U-shaped metal pipe casting 7. The connecting pipe 9 and the air supply pipe 10 are tested by using the front connecting sealing sleeve to ensure that the connecting pipe 9 and the air supply pipe 10 themselves will not leak and affect the test. The cylinder 2 is used to inflate the U-shaped metal pipe casting 7 for a period of time. After the inflation is stopped, the value of the digital pressure gauge 8 is recorded. After standing for a period of time, the value of the digital pressure gauge 8 is observed again. If the value of the digital pressure gauge 8 does not change before and after, it indicates that the airtightness of the U-shaped metal pipe casting 7 is good; otherwise, there is a leak.
[0024] All components of this utility model are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A test apparatus for the performance of metal castings, comprising a frame plate, characterized in that, A placement seat is installed on the inner bottom surface of the frame plate, and a placement groove is provided on the top of the placement seat. A control box is installed on the side of the frame plate. A telescopic component is installed on the inner top surface of the frame plate. A movable frame is connected to the bottom end of the telescopic component. Two extrusion discs are provided at the bottom of the movable frame. A circular groove is provided at the bottom end of the extrusion disc. A double-sealing circular gasket is provided in the circular groove. A cylinder is installed at the top of the frame plate. One end of the cylinder is connected to one end of the air supply pipe. A digital pressure gauge and a connecting pipe are installed on one of the extrusion discs. One end of the digital pressure gauge is connected to one end of the detection pipe. The other end of the air supply pipe is connected to one end of the connecting pipe. The other ends of the detection pipe and the connecting pipe both extend to the lower middle part of the extrusion disc.
2. The test equipment for testing the performance of metal castings according to claim 1, characterized in that, The inner bottom of the double-sealing annular gasket is integrally formed with an inner sealing ring body, and the outer bottom of the double-sealing annular gasket is integrally formed with an outer sealing ring body. The distance between the outer wall of the inner sealing ring body and the inner wall of the outer sealing ring body is consistent with the ring width of the flange.
3. The test equipment for testing the performance of metal castings according to claim 2, characterized in that, The inner wall of the annular groove is provided with an inner inclined wall, and the outer wall of the annular groove is provided with an outer inclined wall. The distance between the middle of the inner inclined wall and the middle of the outer inclined wall is consistent with the circumference width of the flange.
4. The test equipment for testing the performance of metal castings according to claim 1, characterized in that, A track rod is horizontally mounted at the bottom of the movable frame, and two sliders are slidably connected on the track rod. A pressing plate is detachably mounted at the bottom of each slider.
5. The test equipment for testing the performance of metal castings according to claim 4, characterized in that, The top center of the extrusion disc is connected to an installation sleeve, and the bottom end of the slider is connected to the top end of the installation rod. The installation sleeve is threadedly connected to the bottom end of the installation rod.