A line coupling impedance test support device
By using a spring plate connection with a half-clamp structure, the problem of balancing radial displacement and axial stiffness in pipeline coupling impedance testing is solved, thus improving testing accuracy.
Patent Information
- Application Number
- CN202111367522.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-11-18
- Publication Date
- 2026-05-15
- Estimated Expiration
- 2041-11-18
AI Technical Summary
In existing technologies, it is difficult to simultaneously constrain the radial displacement of the test sample and provide a small axial stiffness in pipeline coupling impedance testing, which affects the test accuracy.
A pipeline coupling impedance test support device was designed, which adopts a half and clamp structure and is connected by spring plates to provide radial stiffness and allow axial deformation, ensuring sufficient axial response.
It achieves effective radial constraint on the test sample during the testing process, while providing sufficient axial response, thus improving the testing accuracy.
Smart Images
Figure CN114088191B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipeline coupling impedance testing technology, and in particular to a pipeline coupling impedance testing support device. Background Technology
[0002] Metal straight pipes, flexible connecting pipes, and silencers are passive components in liquid-filled piping systems, playing a crucial role in the acoustic design of these systems. The coupling impedance characteristics of these piping components are important physical quantities reflecting their dynamic characteristics and serve as input parameters for acoustic design calculations and component acoustic performance evaluation. Due to the non-uniform and complex structural relationships of these components, their coupling impedance parameters are difficult to obtain analytically; therefore, experimental measurement is an effective method for acquiring these parameters.
[0003] In existing technologies, the measurement of impedance physical parameters of pipeline test specimens mainly includes mechanical impedance and acoustic impedance, while there is virtually no data on the coupling impedance of the test specimens. In pipeline coupling impedance testing, acoustic excitation and external force excitation need to be applied to the end face, with both the excitation and test acquisition directions being axial. However, due to external factors such as excitation and friction, perfect alignment is impossible. Axial excitation often inevitably causes radial vibration of the test specimen, such as the pipeline or flexible connector, necessitating support for constraint. While traditional rigid supports in pipeline acoustic impedance testing effectively constrain the radial aspect of the test specimen, they also firmly constrain its axial direction. Furthermore, the coupling impedance in the test specimen is a relatively small quantity; if the axial support constraint is too large, the required response quantity of the coupling impedance will be difficult to measure accurately, affecting test precision.
[0004] Therefore, it is necessary to design a support structure for road coupling impedance testing that can constrain the radial displacement of the sample under test but has weak axial stiffness. Summary of the Invention
[0005] This application addresses the shortcomings of the existing production technology by providing a pipeline coupling impedance testing support device that can constrain the radial displacement of the sample under test while providing a small axial stiffness. This allows for sufficient axial response to be measured when axial excitation is applied during the coupling impedance test.
[0006] The technical solution adopted in this invention is as follows:
[0007] A pipeline coupling impedance testing support device includes two symmetrically arranged half-frames, with their opposite end faces touching. Two clamps are symmetrically arranged on the inner rings of the two half-frames, and their opposite end faces are touching and detachably connected as one unit by a connector. One end of a spring sheet is detachably connected to the front and rear axial end faces of the half-frames by a connector, and the other end of the spring sheet is detachably connected to the front and rear axial end faces of the clamps on the inner rings of the half-frames by a connector.
[0008] Furthermore, the half includes a half body with a semi-circular ring structure. Multiple half bolt holes are respectively provided on the front and rear axial end faces of the half body. The multiple half bolt holes are equidistantly distributed along the circumferential direction. The multiple half bolt holes are connected to the spring plates detachably by bolts.
[0009] Furthermore, the clamp includes a clamp body with a semi-circular ring structure. Mounting support plates are provided on both sides of the clamp body. Multiple second clamp bolt holes are provided on the mounting support plates. The multiple second clamp bolt holes are equidistantly distributed. The mounting support plates on both sides of the two clamps are correspondingly provided and are detachably connected by bolts provided in the second clamp bolt holes. Multiple first clamp bolt holes are provided on the front and rear end faces of the clamp body. The multiple first clamp bolt holes are equidistantly distributed along the circumferential direction. The multiple first clamp bolt holes are detachably connected to spring plates by bolts.
[0010] Furthermore, the spring plate includes an outer ring plate and an inner ring plate with an arc-shaped structure. The outer ring plate and the inner ring plate are connected as a whole by multiple radial plates. The outer ring plate is detachably connected to the clamp by a connector, and the inner ring plate is detachably connected to the clamp by a connector.
[0011] Furthermore, the outer ring plate is provided with multiple elongated external adjustment holes, and the connecting parts between the outer ring plate and the half are set in the external adjustment holes, so that the connection position between the outer ring plate and the half can be adjusted through the external adjustment holes.
[0012] Furthermore, multiple external adjustment holes are respectively set at the intersection of the outer ring plate and multiple radial plates.
[0013] Furthermore, the inner ring plate is provided with multiple elongated internal adjustment holes, and the connecting parts between the inner ring plate and the clamp are set in the internal adjustment holes, so that the connection position between the inner ring plate and the clamp can be adjusted through the internal adjustment holes.
[0014] Furthermore, multiple internal adjustment holes are respectively set at the intersection of the inner ring plate and multiple radial plates.
[0015] The beneficial effects of this invention are as follows:
[0016] The present invention has a compact and reasonable structure and is easy to operate. The clamp can constrain the radial displacement of the sample under test, while the spring plate can provide a small axial stiffness. During the coupling impedance test, when axial excitation is applied, it can induce a sufficient axial response for measurement. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present invention.
[0018] Figure 2 This is a diagram of the Hough structure of the present invention.
[0019] Figure 3 This is a structural diagram of the clamp of the present invention.
[0020] Figure 4 This is a structural diagram of the spring sheet of the present invention.
[0021] Wherein: 100, spring plate; 110, outer ring plate; 120, inner ring plate; 130, radial plate; 140, outer adjusting hole; 150, inner adjusting hole; 200, clamp; 210, clamp body; 220, mounting support plate; 230, first clamp bolt hole; 240, second clamp bolt hole; 300, half-clamp; 310, half-clamp body; 320, half-clamp bolt hole. Detailed Implementation
[0022] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.
[0023] like Figure 1 In the illustrated embodiment, a pipeline coupling impedance testing support device mainly includes two symmetrically arranged half-frames 300, with their opposite end faces touching. Two clamps 200 are symmetrically arranged above and below the inner rings of the two half-frames 300, with their opposite end faces touching and detachably connected as a single unit via connectors.
[0024] like Figure 1 In the illustrated embodiment, the front and rear axial end faces of the half 300 are detachably connected to one end of the spring plate 100 via a connector, and the front and rear axial end faces of the clamp 200 of the inner ring of the half 300 are detachably connected to the other end of the spring plate 100 via a connector. The half 300 and the clamp 200 are axially connected via the spring plate 100. During the coupling impedance test, when an axial excitation is applied, the spring plate 100 can generate a certain axial deformation, thereby causing a sufficient axial response for measurement.
[0025] like Figure 2In the illustrated embodiment, the splitter 300 includes a splitter body 310 with a semi-circular structure. Multiple splitter bolt holes 320 are respectively provided on the front and rear axial end faces of the splitter body 310, and the multiple splitter bolt holes 320 are equidistantly distributed along the circumferential direction. A spring plate 100 is detachably connected to the multiple splitter bolt holes 320 via bolts.
[0026] like Figure 3 In the illustrated embodiment, the clamp 200 includes a clamp body 210 with a semi-circular ring structure. Mounting support plates 220 are provided on both sides of the clamp body 210. Multiple second clamp bolt holes 240 are provided on the mounting support plates 220, equidistantly distributed. The mounting support plates 220 on both sides of the two clamps 200 are correspondingly arranged, and a detachable connection is achieved through bolts provided in the second clamp bolt holes 240. Multiple first clamp bolt holes 230 are provided on the front and rear end faces of the clamp body 210, equidistantly distributed along the circumferential direction. The multiple first clamp bolt holes 230 are detachably connected to spring plates 100 via bolts.
[0027] like Figure 4 In the illustrated embodiment, the spring plate 100 includes an outer ring plate 110 and an inner ring plate 120 with an arcuate structure. The outer ring plate 110 and the inner ring plate 120 are connected as a whole by a plurality of radial plates 130. The outer ring plate 110 is detachably connected to the splitter 300 by a connector, and the inner ring plate 120 is detachably connected to the clamp 200 by a connector.
[0028] like Figure 4 In the embodiment shown, the outer ring plate 110 is provided with a plurality of elongated external adjustment holes 140, and the connector between the outer ring plate 110 and the half 300 is provided in the external adjustment holes 140, so that the connection position between the outer ring plate 110 and the half 300 can be adjusted through the external adjustment holes 140.
[0029] like Figure 4 In the embodiment shown, the inner ring plate 120 is provided with a plurality of elongated inner adjustment holes 150. The connecting piece between the inner ring plate 120 and the clamp 200 is provided in the inner adjustment holes 150, and the connection position between the inner ring plate 120 and the clamp 200 is adjusted through the inner adjustment holes 150.
[0030] To ensure the structural strength of the spring sheet 100 as much as possible, such as Figure 4 In the embodiment shown, multiple external adjustment holes 140 are respectively disposed at the intersection of the outer ring plate 110 and multiple radial plates 130, and multiple internal adjustment holes 150 are respectively disposed at the intersection of the inner ring plate 120 and multiple radial plates 130.
[0031] The working principle of this invention is as follows: During use, the clamp 200 tightly holds and fixes the test sample, providing sufficient radial stiffness support. Since the spring plate 100 is deformable, it provides a certain axial stiffness support to the test sample and also induces a sufficient axial response for measurement. The half-clamp 300 primarily provides constraint for the spring plate 100.
[0032] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.
Claims
1. A pipeline coupling impedance testing support device, comprising two symmetrically arranged half-frames (300), characterized in that: The two half-frames (300) have their opposite end faces fitted together. Two clamps (200) are symmetrically arranged on the inner rings of the two half-frames (300). The opposite end faces of the two clamps (200) are fitted together and detachably connected as a single unit via a connector. One end of a spring plate (100) is detachably connected to the front and rear axial end faces of the half-frame (300) via a connector. The other end of the spring plate (100) is detachably connected to the front and rear axial end faces of the clamps (200) on the inner ring of the half-frame (300) via a connector. The half-frame (300) includes a half-frame body (310) with a semi-circular ring structure. Multiple half-frame bolt holes (320) are respectively provided on the front and rear axial end faces of the half-frame body (310). The multiple half-frame bolt holes (320) are equidistantly distributed along the circumferential direction. The clamp (200) includes a clamp body (210) with a semi-circular structure. Mounting plates (220) are provided on both sides of the clamp body (210). Multiple second clamp bolt holes (240) are provided on the mounting plates (220). The multiple second clamp bolt holes (240) are equidistantly distributed. The mounting plates (220) on both sides of the two clamps (200) are correspondingly provided and are detachably connected by bolts provided in the second clamp bolt holes (240). Multiple first clamp bolt holes (230) are provided on the front and rear end faces of the clamp body (210). The multiple first clamp bolt holes (230) are equidistantly distributed along the circumferential direction. The multiple first clamp bolt holes (230) are detachably connected to the spring plate (100) by bolts. The spring sheet (100) includes an outer ring plate (110) and an inner ring plate (120) with an arc-shaped structure. The outer ring plate (110) and the inner ring plate (120) are connected as a whole by a plurality of radial plates (130). The outer ring plate (110) is detachably connected to the splitter (300) by a connector, and the inner ring plate (120) is detachably connected to the clamp (200) by a connector. In use, the clamp (200) holds and fixes the test sample, and the clamp (200) provides radial stiffness support to the test sample; since the spring plate (100) can deform, the spring plate (100) provides axial stiffness support to the test sample, and at the same time, it can also cause a sufficient axial response for measurement; the half (300) provides constraint for the spring plate (100); The outer ring plate (110) is provided with a plurality of elongated waist-shaped external adjustment holes (140), and the connecting piece between the outer ring plate (110) and the half (300) is provided in the external adjustment holes (140). The connection position between the outer ring plate (110) and the half (300) is adjusted through the external adjustment holes (140). The inner ring plate (120) is provided with a plurality of elongated inner adjustment holes (150). The connecting piece between the inner ring plate (120) and the clamp (200) is provided in the inner adjustment hole (150), and the connection position between the inner ring plate (120) and the clamp (200) is adjusted through the inner adjustment hole (150).
2. The pipeline coupling impedance testing support device as described in claim 1, characterized in that: The multiple external adjustment holes (140) are respectively set at the intersection of the outer ring plate (110) and the multiple radial plates (130).
3. The pipeline coupling impedance testing support device as described in claim 1, characterized in that: The multiple inner adjustment holes (150) are respectively set at the intersection of the inner ring plate (120) and the multiple radial plates (130).